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Rev | Author | Line No. | Line |
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2327 | Serge | 1 | /* |
2 | * Copyright © 2008 Intel Corporation |
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3 | * |
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4 | * Permission is hereby granted, free of charge, to any person obtaining a |
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5 | * copy of this software and associated documentation files (the "Software"), |
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6 | * to deal in the Software without restriction, including without limitation |
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7 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
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8 | * and/or sell copies of the Software, and to permit persons to whom the |
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9 | * Software is furnished to do so, subject to the following conditions: |
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10 | * |
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11 | * The above copyright notice and this permission notice (including the next |
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12 | * paragraph) shall be included in all copies or substantial portions of the |
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13 | * Software. |
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14 | * |
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15 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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16 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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17 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
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18 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
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19 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING |
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20 | * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS |
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21 | * IN THE SOFTWARE. |
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22 | * |
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23 | * Authors: |
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24 | * Keith Packard |
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25 | * |
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26 | */ |
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27 | |||
28 | #include |
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2330 | Serge | 29 | #include |
3031 | serge | 30 | #include |
31 | #include |
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6084 | serge | 32 | #include |
3031 | serge | 33 | #include |
34 | #include |
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35 | #include |
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2327 | Serge | 36 | #include "intel_drv.h" |
3031 | serge | 37 | #include |
2327 | Serge | 38 | #include "i915_drv.h" |
39 | |||
5060 | serge | 40 | #define DP_LINK_CHECK_TIMEOUT (10 * 1000) |
2327 | Serge | 41 | |
6084 | serge | 42 | /* Compliance test status bits */ |
43 | #define INTEL_DP_RESOLUTION_SHIFT_MASK 0 |
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44 | #define INTEL_DP_RESOLUTION_PREFERRED (1 << INTEL_DP_RESOLUTION_SHIFT_MASK) |
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45 | #define INTEL_DP_RESOLUTION_STANDARD (2 << INTEL_DP_RESOLUTION_SHIFT_MASK) |
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46 | #define INTEL_DP_RESOLUTION_FAILSAFE (3 << INTEL_DP_RESOLUTION_SHIFT_MASK) |
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47 | |||
4560 | Serge | 48 | struct dp_link_dpll { |
6084 | serge | 49 | int clock; |
4560 | Serge | 50 | struct dpll dpll; |
51 | }; |
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52 | |||
53 | static const struct dp_link_dpll gen4_dpll[] = { |
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6084 | serge | 54 | { 162000, |
4560 | Serge | 55 | { .p1 = 2, .p2 = 10, .n = 2, .m1 = 23, .m2 = 8 } }, |
6084 | serge | 56 | { 270000, |
4560 | Serge | 57 | { .p1 = 1, .p2 = 10, .n = 1, .m1 = 14, .m2 = 2 } } |
58 | }; |
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59 | |||
60 | static const struct dp_link_dpll pch_dpll[] = { |
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6084 | serge | 61 | { 162000, |
4560 | Serge | 62 | { .p1 = 2, .p2 = 10, .n = 1, .m1 = 12, .m2 = 9 } }, |
6084 | serge | 63 | { 270000, |
4560 | Serge | 64 | { .p1 = 1, .p2 = 10, .n = 2, .m1 = 14, .m2 = 8 } } |
65 | }; |
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66 | |||
67 | static const struct dp_link_dpll vlv_dpll[] = { |
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6084 | serge | 68 | { 162000, |
4560 | Serge | 69 | { .p1 = 3, .p2 = 2, .n = 5, .m1 = 3, .m2 = 81 } }, |
6084 | serge | 70 | { 270000, |
4560 | Serge | 71 | { .p1 = 2, .p2 = 2, .n = 1, .m1 = 2, .m2 = 27 } } |
72 | }; |
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73 | |||
5060 | serge | 74 | /* |
75 | * CHV supports eDP 1.4 that have more link rates. |
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76 | * Below only provides the fixed rate but exclude variable rate. |
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77 | */ |
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78 | static const struct dp_link_dpll chv_dpll[] = { |
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79 | /* |
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80 | * CHV requires to program fractional division for m2. |
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81 | * m2 is stored in fixed point format using formula below |
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82 | * (m2_int << 22) | m2_fraction |
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83 | */ |
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6084 | serge | 84 | { 162000, /* m2_int = 32, m2_fraction = 1677722 */ |
5060 | serge | 85 | { .p1 = 4, .p2 = 2, .n = 1, .m1 = 2, .m2 = 0x819999a } }, |
6084 | serge | 86 | { 270000, /* m2_int = 27, m2_fraction = 0 */ |
5060 | serge | 87 | { .p1 = 4, .p2 = 1, .n = 1, .m1 = 2, .m2 = 0x6c00000 } }, |
6084 | serge | 88 | { 540000, /* m2_int = 27, m2_fraction = 0 */ |
5060 | serge | 89 | { .p1 = 2, .p2 = 1, .n = 1, .m1 = 2, .m2 = 0x6c00000 } } |
90 | }; |
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91 | |||
6084 | serge | 92 | static const int bxt_rates[] = { 162000, 216000, 243000, 270000, |
93 | 324000, 432000, 540000 }; |
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94 | static const int skl_rates[] = { 162000, 216000, 270000, |
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95 | 324000, 432000, 540000 }; |
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96 | static const int default_rates[] = { 162000, 270000, 540000 }; |
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97 | |||
2327 | Serge | 98 | /** |
99 | * is_edp - is the given port attached to an eDP panel (either CPU or PCH) |
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100 | * @intel_dp: DP struct |
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101 | * |
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102 | * If a CPU or PCH DP output is attached to an eDP panel, this function |
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103 | * will return true, and false otherwise. |
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104 | */ |
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105 | static bool is_edp(struct intel_dp *intel_dp) |
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106 | { |
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3243 | Serge | 107 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
108 | |||
109 | return intel_dig_port->base.type == INTEL_OUTPUT_EDP; |
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2327 | Serge | 110 | } |
111 | |||
3243 | Serge | 112 | static struct drm_device *intel_dp_to_dev(struct intel_dp *intel_dp) |
2327 | Serge | 113 | { |
3243 | Serge | 114 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
115 | |||
116 | return intel_dig_port->base.base.dev; |
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2327 | Serge | 117 | } |
118 | |||
2330 | Serge | 119 | static struct intel_dp *intel_attached_dp(struct drm_connector *connector) |
120 | { |
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3243 | Serge | 121 | return enc_to_intel_dp(&intel_attached_encoder(connector)->base); |
2330 | Serge | 122 | } |
2327 | Serge | 123 | |
2330 | Serge | 124 | static void intel_dp_link_down(struct intel_dp *intel_dp); |
5354 | serge | 125 | static bool edp_panel_vdd_on(struct intel_dp *intel_dp); |
5060 | serge | 126 | static void edp_panel_vdd_off(struct intel_dp *intel_dp, bool sync); |
5354 | serge | 127 | static void vlv_init_panel_power_sequencer(struct intel_dp *intel_dp); |
128 | static void vlv_steal_power_sequencer(struct drm_device *dev, |
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129 | enum pipe pipe); |
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2330 | Serge | 130 | |
6084 | serge | 131 | static unsigned int intel_dp_unused_lane_mask(int lane_count) |
2330 | Serge | 132 | { |
6084 | serge | 133 | return ~((1 << lane_count) - 1) & 0xf; |
134 | } |
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135 | |||
136 | static int |
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137 | intel_dp_max_link_bw(struct intel_dp *intel_dp) |
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138 | { |
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2330 | Serge | 139 | int max_link_bw = intel_dp->dpcd[DP_MAX_LINK_RATE]; |
2327 | Serge | 140 | |
2330 | Serge | 141 | switch (max_link_bw) { |
142 | case DP_LINK_BW_1_62: |
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143 | case DP_LINK_BW_2_7: |
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6084 | serge | 144 | case DP_LINK_BW_5_4: |
2330 | Serge | 145 | break; |
146 | default: |
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4104 | Serge | 147 | WARN(1, "invalid max DP link bw val %x, using 1.62Gbps\n", |
148 | max_link_bw); |
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2330 | Serge | 149 | max_link_bw = DP_LINK_BW_1_62; |
150 | break; |
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151 | } |
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152 | return max_link_bw; |
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153 | } |
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2327 | Serge | 154 | |
5060 | serge | 155 | static u8 intel_dp_max_lane_count(struct intel_dp *intel_dp) |
156 | { |
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157 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
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158 | struct drm_device *dev = intel_dig_port->base.base.dev; |
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159 | u8 source_max, sink_max; |
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160 | |||
161 | source_max = 4; |
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162 | if (HAS_DDI(dev) && intel_dig_port->port == PORT_A && |
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163 | (intel_dig_port->saved_port_bits & DDI_A_4_LANES) == 0) |
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164 | source_max = 2; |
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165 | |||
166 | sink_max = drm_dp_max_lane_count(intel_dp->dpcd); |
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167 | |||
168 | return min(source_max, sink_max); |
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169 | } |
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170 | |||
2342 | Serge | 171 | /* |
172 | * The units on the numbers in the next two are... bizarre. Examples will |
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173 | * make it clearer; this one parallels an example in the eDP spec. |
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174 | * |
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175 | * intel_dp_max_data_rate for one lane of 2.7GHz evaluates as: |
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176 | * |
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177 | * 270000 * 1 * 8 / 10 == 216000 |
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178 | * |
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179 | * The actual data capacity of that configuration is 2.16Gbit/s, so the |
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180 | * units are decakilobits. ->clock in a drm_display_mode is in kilohertz - |
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181 | * or equivalently, kilopixels per second - so for 1680x1050R it'd be |
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182 | * 119000. At 18bpp that's 2142000 kilobits per second. |
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183 | * |
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184 | * Thus the strange-looking division by 10 in intel_dp_link_required, to |
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185 | * get the result in decakilobits instead of kilobits. |
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186 | */ |
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187 | |||
2330 | Serge | 188 | static int |
2351 | Serge | 189 | intel_dp_link_required(int pixel_clock, int bpp) |
2330 | Serge | 190 | { |
2342 | Serge | 191 | return (pixel_clock * bpp + 9) / 10; |
2330 | Serge | 192 | } |
2327 | Serge | 193 | |
2330 | Serge | 194 | static int |
195 | intel_dp_max_data_rate(int max_link_clock, int max_lanes) |
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196 | { |
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197 | return (max_link_clock * max_lanes * 8) / 10; |
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198 | } |
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2327 | Serge | 199 | |
4560 | Serge | 200 | static enum drm_mode_status |
2330 | Serge | 201 | intel_dp_mode_valid(struct drm_connector *connector, |
202 | struct drm_display_mode *mode) |
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203 | { |
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204 | struct intel_dp *intel_dp = intel_attached_dp(connector); |
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3243 | Serge | 205 | struct intel_connector *intel_connector = to_intel_connector(connector); |
206 | struct drm_display_mode *fixed_mode = intel_connector->panel.fixed_mode; |
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3746 | Serge | 207 | int target_clock = mode->clock; |
208 | int max_rate, mode_rate, max_lanes, max_link_clock; |
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2327 | Serge | 209 | |
3243 | Serge | 210 | if (is_edp(intel_dp) && fixed_mode) { |
211 | if (mode->hdisplay > fixed_mode->hdisplay) |
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2330 | Serge | 212 | return MODE_PANEL; |
2327 | Serge | 213 | |
3243 | Serge | 214 | if (mode->vdisplay > fixed_mode->vdisplay) |
2330 | Serge | 215 | return MODE_PANEL; |
3746 | Serge | 216 | |
217 | target_clock = fixed_mode->clock; |
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2330 | Serge | 218 | } |
2327 | Serge | 219 | |
6084 | serge | 220 | max_link_clock = intel_dp_max_link_rate(intel_dp); |
5060 | serge | 221 | max_lanes = intel_dp_max_lane_count(intel_dp); |
3746 | Serge | 222 | |
223 | max_rate = intel_dp_max_data_rate(max_link_clock, max_lanes); |
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224 | mode_rate = intel_dp_link_required(target_clock, 18); |
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225 | |||
226 | if (mode_rate > max_rate) |
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2330 | Serge | 227 | return MODE_CLOCK_HIGH; |
2327 | Serge | 228 | |
2330 | Serge | 229 | if (mode->clock < 10000) |
230 | return MODE_CLOCK_LOW; |
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231 | |||
3031 | serge | 232 | if (mode->flags & DRM_MODE_FLAG_DBLCLK) |
233 | return MODE_H_ILLEGAL; |
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234 | |||
2330 | Serge | 235 | return MODE_OK; |
236 | } |
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237 | |||
5354 | serge | 238 | uint32_t intel_dp_pack_aux(const uint8_t *src, int src_bytes) |
2330 | Serge | 239 | { |
240 | int i; |
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241 | uint32_t v = 0; |
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242 | |||
243 | if (src_bytes > 4) |
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244 | src_bytes = 4; |
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245 | for (i = 0; i < src_bytes; i++) |
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246 | v |= ((uint32_t) src[i]) << ((3-i) * 8); |
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247 | return v; |
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248 | } |
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249 | |||
6084 | serge | 250 | static void intel_dp_unpack_aux(uint32_t src, uint8_t *dst, int dst_bytes) |
2330 | Serge | 251 | { |
252 | int i; |
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253 | if (dst_bytes > 4) |
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254 | dst_bytes = 4; |
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255 | for (i = 0; i < dst_bytes; i++) |
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256 | dst[i] = src >> ((3-i) * 8); |
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257 | } |
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258 | |||
4560 | Serge | 259 | static void |
260 | intel_dp_init_panel_power_sequencer(struct drm_device *dev, |
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5354 | serge | 261 | struct intel_dp *intel_dp); |
4560 | Serge | 262 | static void |
263 | intel_dp_init_panel_power_sequencer_registers(struct drm_device *dev, |
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5354 | serge | 264 | struct intel_dp *intel_dp); |
4560 | Serge | 265 | |
5354 | serge | 266 | static void pps_lock(struct intel_dp *intel_dp) |
267 | { |
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268 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
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269 | struct intel_encoder *encoder = &intel_dig_port->base; |
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270 | struct drm_device *dev = encoder->base.dev; |
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271 | struct drm_i915_private *dev_priv = dev->dev_private; |
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272 | enum intel_display_power_domain power_domain; |
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273 | |||
274 | /* |
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275 | * See vlv_power_sequencer_reset() why we need |
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276 | * a power domain reference here. |
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277 | */ |
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6084 | serge | 278 | power_domain = intel_display_port_aux_power_domain(encoder); |
5354 | serge | 279 | intel_display_power_get(dev_priv, power_domain); |
280 | |||
281 | mutex_lock(&dev_priv->pps_mutex); |
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282 | } |
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283 | |||
284 | static void pps_unlock(struct intel_dp *intel_dp) |
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285 | { |
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286 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
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287 | struct intel_encoder *encoder = &intel_dig_port->base; |
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288 | struct drm_device *dev = encoder->base.dev; |
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289 | struct drm_i915_private *dev_priv = dev->dev_private; |
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290 | enum intel_display_power_domain power_domain; |
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291 | |||
292 | mutex_unlock(&dev_priv->pps_mutex); |
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293 | |||
6084 | serge | 294 | power_domain = intel_display_port_aux_power_domain(encoder); |
5354 | serge | 295 | intel_display_power_put(dev_priv, power_domain); |
296 | } |
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297 | |||
298 | static void |
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299 | vlv_power_sequencer_kick(struct intel_dp *intel_dp) |
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300 | { |
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301 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
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302 | struct drm_device *dev = intel_dig_port->base.base.dev; |
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303 | struct drm_i915_private *dev_priv = dev->dev_private; |
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304 | enum pipe pipe = intel_dp->pps_pipe; |
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6084 | serge | 305 | bool pll_enabled, release_cl_override = false; |
306 | enum dpio_phy phy = DPIO_PHY(pipe); |
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307 | enum dpio_channel ch = vlv_pipe_to_channel(pipe); |
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5354 | serge | 308 | uint32_t DP; |
309 | |||
310 | if (WARN(I915_READ(intel_dp->output_reg) & DP_PORT_EN, |
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311 | "skipping pipe %c power seqeuncer kick due to port %c being active\n", |
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312 | pipe_name(pipe), port_name(intel_dig_port->port))) |
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313 | return; |
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314 | |||
315 | DRM_DEBUG_KMS("kicking pipe %c power sequencer for port %c\n", |
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316 | pipe_name(pipe), port_name(intel_dig_port->port)); |
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317 | |||
318 | /* Preserve the BIOS-computed detected bit. This is |
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319 | * supposed to be read-only. |
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320 | */ |
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321 | DP = I915_READ(intel_dp->output_reg) & DP_DETECTED; |
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322 | DP |= DP_VOLTAGE_0_4 | DP_PRE_EMPHASIS_0; |
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323 | DP |= DP_PORT_WIDTH(1); |
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324 | DP |= DP_LINK_TRAIN_PAT_1; |
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325 | |||
326 | if (IS_CHERRYVIEW(dev)) |
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327 | DP |= DP_PIPE_SELECT_CHV(pipe); |
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328 | else if (pipe == PIPE_B) |
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329 | DP |= DP_PIPEB_SELECT; |
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330 | |||
331 | pll_enabled = I915_READ(DPLL(pipe)) & DPLL_VCO_ENABLE; |
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332 | |||
333 | /* |
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334 | * The DPLL for the pipe must be enabled for this to work. |
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335 | * So enable temporarily it if it's not already enabled. |
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336 | */ |
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6084 | serge | 337 | if (!pll_enabled) { |
338 | release_cl_override = IS_CHERRYVIEW(dev) && |
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339 | !chv_phy_powergate_ch(dev_priv, phy, ch, true); |
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340 | |||
5354 | serge | 341 | vlv_force_pll_on(dev, pipe, IS_CHERRYVIEW(dev) ? |
342 | &chv_dpll[0].dpll : &vlv_dpll[0].dpll); |
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6084 | serge | 343 | } |
5354 | serge | 344 | |
345 | /* |
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346 | * Similar magic as in intel_dp_enable_port(). |
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347 | * We _must_ do this port enable + disable trick |
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348 | * to make this power seqeuencer lock onto the port. |
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349 | * Otherwise even VDD force bit won't work. |
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350 | */ |
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351 | I915_WRITE(intel_dp->output_reg, DP); |
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352 | POSTING_READ(intel_dp->output_reg); |
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353 | |||
354 | I915_WRITE(intel_dp->output_reg, DP | DP_PORT_EN); |
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355 | POSTING_READ(intel_dp->output_reg); |
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356 | |||
357 | I915_WRITE(intel_dp->output_reg, DP & ~DP_PORT_EN); |
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358 | POSTING_READ(intel_dp->output_reg); |
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359 | |||
6084 | serge | 360 | if (!pll_enabled) { |
5354 | serge | 361 | vlv_force_pll_off(dev, pipe); |
6084 | serge | 362 | |
363 | if (release_cl_override) |
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364 | chv_phy_powergate_ch(dev_priv, phy, ch, false); |
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365 | } |
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5354 | serge | 366 | } |
367 | |||
4560 | Serge | 368 | static enum pipe |
369 | vlv_power_sequencer_pipe(struct intel_dp *intel_dp) |
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370 | { |
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371 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
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372 | struct drm_device *dev = intel_dig_port->base.base.dev; |
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373 | struct drm_i915_private *dev_priv = dev->dev_private; |
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5354 | serge | 374 | struct intel_encoder *encoder; |
375 | unsigned int pipes = (1 << PIPE_A) | (1 << PIPE_B); |
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4560 | Serge | 376 | enum pipe pipe; |
377 | |||
5354 | serge | 378 | lockdep_assert_held(&dev_priv->pps_mutex); |
4560 | Serge | 379 | |
5354 | serge | 380 | /* We should never land here with regular DP ports */ |
381 | WARN_ON(!is_edp(intel_dp)); |
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382 | |||
383 | if (intel_dp->pps_pipe != INVALID_PIPE) |
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384 | return intel_dp->pps_pipe; |
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385 | |||
386 | /* |
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387 | * We don't have power sequencer currently. |
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388 | * Pick one that's not used by other ports. |
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389 | */ |
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390 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, |
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391 | base.head) { |
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392 | struct intel_dp *tmp; |
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393 | |||
394 | if (encoder->type != INTEL_OUTPUT_EDP) |
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395 | continue; |
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396 | |||
397 | tmp = enc_to_intel_dp(&encoder->base); |
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398 | |||
399 | if (tmp->pps_pipe != INVALID_PIPE) |
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400 | pipes &= ~(1 << tmp->pps_pipe); |
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401 | } |
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402 | |||
403 | /* |
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404 | * Didn't find one. This should not happen since there |
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405 | * are two power sequencers and up to two eDP ports. |
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406 | */ |
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407 | if (WARN_ON(pipes == 0)) |
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408 | pipe = PIPE_A; |
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409 | else |
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410 | pipe = ffs(pipes) - 1; |
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411 | |||
412 | vlv_steal_power_sequencer(dev, pipe); |
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413 | intel_dp->pps_pipe = pipe; |
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414 | |||
415 | DRM_DEBUG_KMS("picked pipe %c power sequencer for port %c\n", |
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416 | pipe_name(intel_dp->pps_pipe), |
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417 | port_name(intel_dig_port->port)); |
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418 | |||
419 | /* init power sequencer on this pipe and port */ |
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420 | intel_dp_init_panel_power_sequencer(dev, intel_dp); |
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421 | intel_dp_init_panel_power_sequencer_registers(dev, intel_dp); |
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422 | |||
423 | /* |
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424 | * Even vdd force doesn't work until we've made |
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425 | * the power sequencer lock in on the port. |
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426 | */ |
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427 | vlv_power_sequencer_kick(intel_dp); |
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428 | |||
429 | return intel_dp->pps_pipe; |
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430 | } |
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431 | |||
432 | typedef bool (*vlv_pipe_check)(struct drm_i915_private *dev_priv, |
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433 | enum pipe pipe); |
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434 | |||
435 | static bool vlv_pipe_has_pp_on(struct drm_i915_private *dev_priv, |
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436 | enum pipe pipe) |
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437 | { |
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438 | return I915_READ(VLV_PIPE_PP_STATUS(pipe)) & PP_ON; |
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439 | } |
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440 | |||
441 | static bool vlv_pipe_has_vdd_on(struct drm_i915_private *dev_priv, |
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442 | enum pipe pipe) |
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443 | { |
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444 | return I915_READ(VLV_PIPE_PP_CONTROL(pipe)) & EDP_FORCE_VDD; |
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445 | } |
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446 | |||
447 | static bool vlv_pipe_any(struct drm_i915_private *dev_priv, |
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448 | enum pipe pipe) |
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449 | { |
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450 | return true; |
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451 | } |
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452 | |||
453 | static enum pipe |
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454 | vlv_initial_pps_pipe(struct drm_i915_private *dev_priv, |
||
455 | enum port port, |
||
456 | vlv_pipe_check pipe_check) |
||
457 | { |
||
458 | enum pipe pipe; |
||
459 | |||
4560 | Serge | 460 | for (pipe = PIPE_A; pipe <= PIPE_B; pipe++) { |
461 | u32 port_sel = I915_READ(VLV_PIPE_PP_ON_DELAYS(pipe)) & |
||
462 | PANEL_PORT_SELECT_MASK; |
||
5354 | serge | 463 | |
464 | if (port_sel != PANEL_PORT_SELECT_VLV(port)) |
||
465 | continue; |
||
466 | |||
467 | if (!pipe_check(dev_priv, pipe)) |
||
468 | continue; |
||
469 | |||
6084 | serge | 470 | return pipe; |
4560 | Serge | 471 | } |
472 | |||
5354 | serge | 473 | return INVALID_PIPE; |
4560 | Serge | 474 | } |
475 | |||
5354 | serge | 476 | static void |
477 | vlv_initial_power_sequencer_setup(struct intel_dp *intel_dp) |
||
478 | { |
||
479 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
||
480 | struct drm_device *dev = intel_dig_port->base.base.dev; |
||
481 | struct drm_i915_private *dev_priv = dev->dev_private; |
||
482 | enum port port = intel_dig_port->port; |
||
483 | |||
484 | lockdep_assert_held(&dev_priv->pps_mutex); |
||
485 | |||
486 | /* try to find a pipe with this port selected */ |
||
487 | /* first pick one where the panel is on */ |
||
488 | intel_dp->pps_pipe = vlv_initial_pps_pipe(dev_priv, port, |
||
489 | vlv_pipe_has_pp_on); |
||
490 | /* didn't find one? pick one where vdd is on */ |
||
491 | if (intel_dp->pps_pipe == INVALID_PIPE) |
||
492 | intel_dp->pps_pipe = vlv_initial_pps_pipe(dev_priv, port, |
||
493 | vlv_pipe_has_vdd_on); |
||
494 | /* didn't find one? pick one with just the correct port */ |
||
495 | if (intel_dp->pps_pipe == INVALID_PIPE) |
||
496 | intel_dp->pps_pipe = vlv_initial_pps_pipe(dev_priv, port, |
||
497 | vlv_pipe_any); |
||
498 | |||
499 | /* didn't find one? just let vlv_power_sequencer_pipe() pick one when needed */ |
||
500 | if (intel_dp->pps_pipe == INVALID_PIPE) { |
||
501 | DRM_DEBUG_KMS("no initial power sequencer for port %c\n", |
||
502 | port_name(port)); |
||
503 | return; |
||
504 | } |
||
505 | |||
506 | DRM_DEBUG_KMS("initial power sequencer for port %c: pipe %c\n", |
||
507 | port_name(port), pipe_name(intel_dp->pps_pipe)); |
||
508 | |||
509 | intel_dp_init_panel_power_sequencer(dev, intel_dp); |
||
510 | intel_dp_init_panel_power_sequencer_registers(dev, intel_dp); |
||
511 | } |
||
512 | |||
513 | void vlv_power_sequencer_reset(struct drm_i915_private *dev_priv) |
||
514 | { |
||
515 | struct drm_device *dev = dev_priv->dev; |
||
516 | struct intel_encoder *encoder; |
||
517 | |||
518 | if (WARN_ON(!IS_VALLEYVIEW(dev))) |
||
519 | return; |
||
520 | |||
521 | /* |
||
522 | * We can't grab pps_mutex here due to deadlock with power_domain |
||
523 | * mutex when power_domain functions are called while holding pps_mutex. |
||
524 | * That also means that in order to use pps_pipe the code needs to |
||
525 | * hold both a power domain reference and pps_mutex, and the power domain |
||
526 | * reference get/put must be done while _not_ holding pps_mutex. |
||
527 | * pps_{lock,unlock}() do these steps in the correct order, so one |
||
528 | * should use them always. |
||
529 | */ |
||
530 | |||
531 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, base.head) { |
||
532 | struct intel_dp *intel_dp; |
||
533 | |||
534 | if (encoder->type != INTEL_OUTPUT_EDP) |
||
535 | continue; |
||
536 | |||
537 | intel_dp = enc_to_intel_dp(&encoder->base); |
||
538 | intel_dp->pps_pipe = INVALID_PIPE; |
||
539 | } |
||
540 | } |
||
541 | |||
4560 | Serge | 542 | static u32 _pp_ctrl_reg(struct intel_dp *intel_dp) |
543 | { |
||
544 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
||
545 | |||
6084 | serge | 546 | if (IS_BROXTON(dev)) |
547 | return BXT_PP_CONTROL(0); |
||
548 | else if (HAS_PCH_SPLIT(dev)) |
||
4560 | Serge | 549 | return PCH_PP_CONTROL; |
550 | else |
||
551 | return VLV_PIPE_PP_CONTROL(vlv_power_sequencer_pipe(intel_dp)); |
||
552 | } |
||
553 | |||
554 | static u32 _pp_stat_reg(struct intel_dp *intel_dp) |
||
555 | { |
||
556 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
||
557 | |||
6084 | serge | 558 | if (IS_BROXTON(dev)) |
559 | return BXT_PP_STATUS(0); |
||
560 | else if (HAS_PCH_SPLIT(dev)) |
||
4560 | Serge | 561 | return PCH_PP_STATUS; |
562 | else |
||
563 | return VLV_PIPE_PP_STATUS(vlv_power_sequencer_pipe(intel_dp)); |
||
564 | } |
||
565 | |||
5354 | serge | 566 | #if 0 |
567 | /* Reboot notifier handler to shutdown panel power to guarantee T12 timing |
||
568 | This function only applicable when panel PM state is not to be tracked */ |
||
569 | static int edp_notify_handler(struct notifier_block *this, unsigned long code, |
||
570 | void *unused) |
||
571 | { |
||
572 | struct intel_dp *intel_dp = container_of(this, typeof(* intel_dp), |
||
573 | edp_notifier); |
||
574 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
||
575 | struct drm_i915_private *dev_priv = dev->dev_private; |
||
5060 | serge | 576 | |
5354 | serge | 577 | if (!is_edp(intel_dp) || code != SYS_RESTART) |
578 | return 0; |
||
579 | |||
580 | pps_lock(intel_dp); |
||
581 | |||
582 | if (IS_VALLEYVIEW(dev)) { |
||
583 | enum pipe pipe = vlv_power_sequencer_pipe(intel_dp); |
||
6084 | serge | 584 | u32 pp_ctrl_reg, pp_div_reg; |
585 | u32 pp_div; |
||
5354 | serge | 586 | |
587 | pp_ctrl_reg = VLV_PIPE_PP_CONTROL(pipe); |
||
588 | pp_div_reg = VLV_PIPE_PP_DIVISOR(pipe); |
||
589 | pp_div = I915_READ(pp_div_reg); |
||
590 | pp_div &= PP_REFERENCE_DIVIDER_MASK; |
||
591 | |||
592 | /* 0x1F write to PP_DIV_REG sets max cycle delay */ |
||
593 | I915_WRITE(pp_div_reg, pp_div | 0x1F); |
||
594 | I915_WRITE(pp_ctrl_reg, PANEL_UNLOCK_REGS | PANEL_POWER_OFF); |
||
595 | msleep(intel_dp->panel_power_cycle_delay); |
||
596 | } |
||
597 | |||
598 | pps_unlock(intel_dp); |
||
599 | |||
600 | return 0; |
||
601 | } |
||
602 | #endif |
||
603 | |||
5060 | serge | 604 | static bool edp_have_panel_power(struct intel_dp *intel_dp) |
2342 | Serge | 605 | { |
3243 | Serge | 606 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
2342 | Serge | 607 | struct drm_i915_private *dev_priv = dev->dev_private; |
608 | |||
5354 | serge | 609 | lockdep_assert_held(&dev_priv->pps_mutex); |
610 | |||
611 | if (IS_VALLEYVIEW(dev) && |
||
612 | intel_dp->pps_pipe == INVALID_PIPE) |
||
613 | return false; |
||
614 | |||
4560 | Serge | 615 | return (I915_READ(_pp_stat_reg(intel_dp)) & PP_ON) != 0; |
2342 | Serge | 616 | } |
617 | |||
5060 | serge | 618 | static bool edp_have_panel_vdd(struct intel_dp *intel_dp) |
2342 | Serge | 619 | { |
3243 | Serge | 620 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
2342 | Serge | 621 | struct drm_i915_private *dev_priv = dev->dev_private; |
622 | |||
5354 | serge | 623 | lockdep_assert_held(&dev_priv->pps_mutex); |
624 | |||
625 | if (IS_VALLEYVIEW(dev) && |
||
626 | intel_dp->pps_pipe == INVALID_PIPE) |
||
627 | return false; |
||
628 | |||
629 | return I915_READ(_pp_ctrl_reg(intel_dp)) & EDP_FORCE_VDD; |
||
2342 | Serge | 630 | } |
631 | |||
632 | static void |
||
633 | intel_dp_check_edp(struct intel_dp *intel_dp) |
||
634 | { |
||
3243 | Serge | 635 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
2342 | Serge | 636 | struct drm_i915_private *dev_priv = dev->dev_private; |
637 | |||
638 | if (!is_edp(intel_dp)) |
||
639 | return; |
||
3746 | Serge | 640 | |
5060 | serge | 641 | if (!edp_have_panel_power(intel_dp) && !edp_have_panel_vdd(intel_dp)) { |
2342 | Serge | 642 | WARN(1, "eDP powered off while attempting aux channel communication.\n"); |
643 | DRM_DEBUG_KMS("Status 0x%08x Control 0x%08x\n", |
||
4560 | Serge | 644 | I915_READ(_pp_stat_reg(intel_dp)), |
645 | I915_READ(_pp_ctrl_reg(intel_dp))); |
||
2342 | Serge | 646 | } |
647 | } |
||
648 | |||
3480 | Serge | 649 | static uint32_t |
650 | intel_dp_aux_wait_done(struct intel_dp *intel_dp, bool has_aux_irq) |
||
651 | { |
||
652 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
||
653 | struct drm_device *dev = intel_dig_port->base.base.dev; |
||
654 | struct drm_i915_private *dev_priv = dev->dev_private; |
||
3746 | Serge | 655 | uint32_t ch_ctl = intel_dp->aux_ch_ctl_reg; |
3480 | Serge | 656 | uint32_t status; |
657 | bool done; |
||
658 | |||
659 | #define C (((status = I915_READ_NOTRACE(ch_ctl)) & DP_AUX_CH_CTL_SEND_BUSY) == 0) |
||
660 | if (has_aux_irq) |
||
661 | done = wait_event_timeout(dev_priv->gmbus_wait_queue, C, |
||
4104 | Serge | 662 | msecs_to_jiffies_timeout(10)); |
3480 | Serge | 663 | else |
664 | done = wait_for_atomic(C, 10) == 0; |
||
665 | if (!done) |
||
666 | DRM_ERROR("dp aux hw did not signal timeout (has irq: %i)!\n", |
||
667 | has_aux_irq); |
||
668 | #undef C |
||
669 | |||
670 | return status; |
||
671 | } |
||
672 | |||
5060 | serge | 673 | static uint32_t i9xx_get_aux_clock_divider(struct intel_dp *intel_dp, int index) |
4104 | Serge | 674 | { |
675 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
||
676 | struct drm_device *dev = intel_dig_port->base.base.dev; |
||
677 | |||
5060 | serge | 678 | /* |
679 | * The clock divider is based off the hrawclk, and would like to run at |
||
680 | * 2MHz. So, take the hrawclk value and divide by 2 and use that |
||
4104 | Serge | 681 | */ |
5060 | serge | 682 | return index ? 0 : intel_hrawclk(dev) / 2; |
683 | } |
||
684 | |||
685 | static uint32_t ilk_get_aux_clock_divider(struct intel_dp *intel_dp, int index) |
||
686 | { |
||
687 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
||
688 | struct drm_device *dev = intel_dig_port->base.base.dev; |
||
6084 | serge | 689 | struct drm_i915_private *dev_priv = dev->dev_private; |
5060 | serge | 690 | |
691 | if (index) |
||
692 | return 0; |
||
693 | |||
694 | if (intel_dig_port->port == PORT_A) { |
||
6084 | serge | 695 | return DIV_ROUND_UP(dev_priv->cdclk_freq, 2000); |
696 | |||
5060 | serge | 697 | } else { |
698 | return DIV_ROUND_UP(intel_pch_rawclk(dev), 2); |
||
699 | } |
||
700 | } |
||
701 | |||
702 | static uint32_t hsw_get_aux_clock_divider(struct intel_dp *intel_dp, int index) |
||
703 | { |
||
704 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
||
705 | struct drm_device *dev = intel_dig_port->base.base.dev; |
||
706 | struct drm_i915_private *dev_priv = dev->dev_private; |
||
707 | |||
708 | if (intel_dig_port->port == PORT_A) { |
||
709 | if (index) |
||
710 | return 0; |
||
6084 | serge | 711 | return DIV_ROUND_CLOSEST(dev_priv->cdclk_freq, 2000); |
4104 | Serge | 712 | } else if (dev_priv->pch_id == INTEL_PCH_LPT_DEVICE_ID_TYPE) { |
713 | /* Workaround for non-ULT HSW */ |
||
714 | switch (index) { |
||
715 | case 0: return 63; |
||
716 | case 1: return 72; |
||
717 | default: return 0; |
||
718 | } |
||
5060 | serge | 719 | } else { |
4104 | Serge | 720 | return index ? 0 : DIV_ROUND_UP(intel_pch_rawclk(dev), 2); |
721 | } |
||
722 | } |
||
723 | |||
5060 | serge | 724 | static uint32_t vlv_get_aux_clock_divider(struct intel_dp *intel_dp, int index) |
725 | { |
||
726 | return index ? 0 : 100; |
||
727 | } |
||
728 | |||
5354 | serge | 729 | static uint32_t skl_get_aux_clock_divider(struct intel_dp *intel_dp, int index) |
730 | { |
||
731 | /* |
||
732 | * SKL doesn't need us to program the AUX clock divider (Hardware will |
||
733 | * derive the clock from CDCLK automatically). We still implement the |
||
734 | * get_aux_clock_divider vfunc to plug-in into the existing code. |
||
735 | */ |
||
736 | return index ? 0 : 1; |
||
737 | } |
||
738 | |||
5060 | serge | 739 | static uint32_t i9xx_get_aux_send_ctl(struct intel_dp *intel_dp, |
740 | bool has_aux_irq, |
||
741 | int send_bytes, |
||
742 | uint32_t aux_clock_divider) |
||
743 | { |
||
744 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
||
745 | struct drm_device *dev = intel_dig_port->base.base.dev; |
||
746 | uint32_t precharge, timeout; |
||
747 | |||
748 | if (IS_GEN6(dev)) |
||
749 | precharge = 3; |
||
750 | else |
||
751 | precharge = 5; |
||
752 | |||
753 | if (IS_BROADWELL(dev) && intel_dp->aux_ch_ctl_reg == DPA_AUX_CH_CTL) |
||
754 | timeout = DP_AUX_CH_CTL_TIME_OUT_600us; |
||
755 | else |
||
756 | timeout = DP_AUX_CH_CTL_TIME_OUT_400us; |
||
757 | |||
758 | return DP_AUX_CH_CTL_SEND_BUSY | |
||
759 | DP_AUX_CH_CTL_DONE | |
||
760 | (has_aux_irq ? DP_AUX_CH_CTL_INTERRUPT : 0) | |
||
761 | DP_AUX_CH_CTL_TIME_OUT_ERROR | |
||
762 | timeout | |
||
763 | DP_AUX_CH_CTL_RECEIVE_ERROR | |
||
764 | (send_bytes << DP_AUX_CH_CTL_MESSAGE_SIZE_SHIFT) | |
||
765 | (precharge << DP_AUX_CH_CTL_PRECHARGE_2US_SHIFT) | |
||
766 | (aux_clock_divider << DP_AUX_CH_CTL_BIT_CLOCK_2X_SHIFT); |
||
767 | } |
||
768 | |||
5354 | serge | 769 | static uint32_t skl_get_aux_send_ctl(struct intel_dp *intel_dp, |
770 | bool has_aux_irq, |
||
771 | int send_bytes, |
||
772 | uint32_t unused) |
||
773 | { |
||
774 | return DP_AUX_CH_CTL_SEND_BUSY | |
||
775 | DP_AUX_CH_CTL_DONE | |
||
776 | (has_aux_irq ? DP_AUX_CH_CTL_INTERRUPT : 0) | |
||
777 | DP_AUX_CH_CTL_TIME_OUT_ERROR | |
||
778 | DP_AUX_CH_CTL_TIME_OUT_1600us | |
||
779 | DP_AUX_CH_CTL_RECEIVE_ERROR | |
||
780 | (send_bytes << DP_AUX_CH_CTL_MESSAGE_SIZE_SHIFT) | |
||
781 | DP_AUX_CH_CTL_SYNC_PULSE_SKL(32); |
||
782 | } |
||
783 | |||
2330 | Serge | 784 | static int |
785 | intel_dp_aux_ch(struct intel_dp *intel_dp, |
||
5354 | serge | 786 | const uint8_t *send, int send_bytes, |
2330 | Serge | 787 | uint8_t *recv, int recv_size) |
788 | { |
||
3243 | Serge | 789 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
790 | struct drm_device *dev = intel_dig_port->base.base.dev; |
||
2330 | Serge | 791 | struct drm_i915_private *dev_priv = dev->dev_private; |
3746 | Serge | 792 | uint32_t ch_ctl = intel_dp->aux_ch_ctl_reg; |
2330 | Serge | 793 | uint32_t ch_data = ch_ctl + 4; |
4104 | Serge | 794 | uint32_t aux_clock_divider; |
3480 | Serge | 795 | int i, ret, recv_bytes; |
2330 | Serge | 796 | uint32_t status; |
5060 | serge | 797 | int try, clock = 0; |
798 | bool has_aux_irq = HAS_AUX_IRQ(dev); |
||
799 | bool vdd; |
||
2330 | Serge | 800 | |
5354 | serge | 801 | pps_lock(intel_dp); |
5060 | serge | 802 | |
5354 | serge | 803 | /* |
804 | * We will be called with VDD already enabled for dpcd/edid/oui reads. |
||
805 | * In such cases we want to leave VDD enabled and it's up to upper layers |
||
806 | * to turn it off. But for eg. i2c-dev access we need to turn it on/off |
||
807 | * ourselves. |
||
808 | */ |
||
809 | vdd = edp_panel_vdd_on(intel_dp); |
||
810 | |||
3480 | Serge | 811 | /* dp aux is extremely sensitive to irq latency, hence request the |
812 | * lowest possible wakeup latency and so prevent the cpu from going into |
||
813 | * deep sleep states. |
||
814 | */ |
||
815 | |||
2342 | Serge | 816 | intel_dp_check_edp(intel_dp); |
2330 | Serge | 817 | |
818 | /* Try to wait for any previous AUX channel activity */ |
||
819 | for (try = 0; try < 3; try++) { |
||
3480 | Serge | 820 | status = I915_READ_NOTRACE(ch_ctl); |
2330 | Serge | 821 | if ((status & DP_AUX_CH_CTL_SEND_BUSY) == 0) |
822 | break; |
||
823 | msleep(1); |
||
824 | } |
||
825 | |||
826 | if (try == 3) { |
||
6084 | serge | 827 | static u32 last_status = -1; |
828 | const u32 status = I915_READ(ch_ctl); |
||
829 | |||
830 | if (status != last_status) { |
||
831 | WARN(1, "dp_aux_ch not started status 0x%08x\n", |
||
832 | status); |
||
833 | last_status = status; |
||
834 | } |
||
835 | |||
3480 | Serge | 836 | ret = -EBUSY; |
837 | goto out; |
||
2330 | Serge | 838 | } |
839 | |||
4560 | Serge | 840 | /* Only 5 data registers! */ |
841 | if (WARN_ON(send_bytes > 20 || recv_size > 20)) { |
||
842 | ret = -E2BIG; |
||
843 | goto out; |
||
844 | } |
||
845 | |||
5060 | serge | 846 | while ((aux_clock_divider = intel_dp->get_aux_clock_divider(intel_dp, clock++))) { |
847 | u32 send_ctl = intel_dp->get_aux_send_ctl(intel_dp, |
||
848 | has_aux_irq, |
||
849 | send_bytes, |
||
850 | aux_clock_divider); |
||
851 | |||
6084 | serge | 852 | /* Must try at least 3 times according to DP spec */ |
853 | for (try = 0; try < 5; try++) { |
||
854 | /* Load the send data into the aux channel data registers */ |
||
855 | for (i = 0; i < send_bytes; i += 4) |
||
856 | I915_WRITE(ch_data + i, |
||
5354 | serge | 857 | intel_dp_pack_aux(send + i, |
858 | send_bytes - i)); |
||
2330 | Serge | 859 | |
6084 | serge | 860 | /* Send the command and wait for it to complete */ |
5060 | serge | 861 | I915_WRITE(ch_ctl, send_ctl); |
2330 | Serge | 862 | |
6084 | serge | 863 | status = intel_dp_aux_wait_done(intel_dp, has_aux_irq); |
3480 | Serge | 864 | |
6084 | serge | 865 | /* Clear done status and any errors */ |
866 | I915_WRITE(ch_ctl, |
||
867 | status | |
||
868 | DP_AUX_CH_CTL_DONE | |
||
869 | DP_AUX_CH_CTL_TIME_OUT_ERROR | |
||
870 | DP_AUX_CH_CTL_RECEIVE_ERROR); |
||
3031 | serge | 871 | |
6084 | serge | 872 | if (status & DP_AUX_CH_CTL_TIME_OUT_ERROR) |
873 | continue; |
||
874 | |||
875 | /* DP CTS 1.2 Core Rev 1.1, 4.2.1.1 & 4.2.1.2 |
||
876 | * 400us delay required for errors and timeouts |
||
877 | * Timeout errors from the HW already meet this |
||
878 | * requirement so skip to next iteration |
||
879 | */ |
||
880 | if (status & DP_AUX_CH_CTL_RECEIVE_ERROR) { |
||
881 | usleep_range(400, 500); |
||
882 | continue; |
||
883 | } |
||
884 | if (status & DP_AUX_CH_CTL_DONE) |
||
885 | goto done; |
||
886 | } |
||
2330 | Serge | 887 | } |
888 | |||
889 | if ((status & DP_AUX_CH_CTL_DONE) == 0) { |
||
890 | DRM_ERROR("dp_aux_ch not done status 0x%08x\n", status); |
||
3480 | Serge | 891 | ret = -EBUSY; |
892 | goto out; |
||
2330 | Serge | 893 | } |
894 | |||
6084 | serge | 895 | done: |
2330 | Serge | 896 | /* Check for timeout or receive error. |
897 | * Timeouts occur when the sink is not connected |
||
898 | */ |
||
899 | if (status & DP_AUX_CH_CTL_RECEIVE_ERROR) { |
||
900 | DRM_ERROR("dp_aux_ch receive error status 0x%08x\n", status); |
||
3480 | Serge | 901 | ret = -EIO; |
902 | goto out; |
||
2330 | Serge | 903 | } |
904 | |||
905 | /* Timeouts occur when the device isn't connected, so they're |
||
906 | * "normal" -- don't fill the kernel log with these */ |
||
907 | if (status & DP_AUX_CH_CTL_TIME_OUT_ERROR) { |
||
908 | DRM_DEBUG_KMS("dp_aux_ch timeout status 0x%08x\n", status); |
||
3480 | Serge | 909 | ret = -ETIMEDOUT; |
910 | goto out; |
||
2330 | Serge | 911 | } |
912 | |||
913 | /* Unload any bytes sent back from the other side */ |
||
914 | recv_bytes = ((status & DP_AUX_CH_CTL_MESSAGE_SIZE_MASK) >> |
||
915 | DP_AUX_CH_CTL_MESSAGE_SIZE_SHIFT); |
||
916 | if (recv_bytes > recv_size) |
||
917 | recv_bytes = recv_size; |
||
918 | |||
919 | for (i = 0; i < recv_bytes; i += 4) |
||
5354 | serge | 920 | intel_dp_unpack_aux(I915_READ(ch_data + i), |
6084 | serge | 921 | recv + i, recv_bytes - i); |
2330 | Serge | 922 | |
3480 | Serge | 923 | ret = recv_bytes; |
924 | out: |
||
925 | |||
5060 | serge | 926 | if (vdd) |
927 | edp_panel_vdd_off(intel_dp, false); |
||
928 | |||
5354 | serge | 929 | pps_unlock(intel_dp); |
930 | |||
3480 | Serge | 931 | return ret; |
2330 | Serge | 932 | } |
933 | |||
5060 | serge | 934 | #define BARE_ADDRESS_SIZE 3 |
935 | #define HEADER_SIZE (BARE_ADDRESS_SIZE + 1) |
||
936 | static ssize_t |
||
937 | intel_dp_aux_transfer(struct drm_dp_aux *aux, struct drm_dp_aux_msg *msg) |
||
2330 | Serge | 938 | { |
5060 | serge | 939 | struct intel_dp *intel_dp = container_of(aux, struct intel_dp, aux); |
940 | uint8_t txbuf[20], rxbuf[20]; |
||
941 | size_t txsize, rxsize; |
||
2330 | Serge | 942 | int ret; |
943 | |||
6084 | serge | 944 | txbuf[0] = (msg->request << 4) | |
945 | ((msg->address >> 16) & 0xf); |
||
946 | txbuf[1] = (msg->address >> 8) & 0xff; |
||
5060 | serge | 947 | txbuf[2] = msg->address & 0xff; |
948 | txbuf[3] = msg->size - 1; |
||
949 | |||
950 | switch (msg->request & ~DP_AUX_I2C_MOT) { |
||
951 | case DP_AUX_NATIVE_WRITE: |
||
952 | case DP_AUX_I2C_WRITE: |
||
6084 | serge | 953 | case DP_AUX_I2C_WRITE_STATUS_UPDATE: |
5060 | serge | 954 | txsize = msg->size ? HEADER_SIZE + msg->size : BARE_ADDRESS_SIZE; |
6084 | serge | 955 | rxsize = 2; /* 0 or 1 data bytes */ |
5060 | serge | 956 | |
957 | if (WARN_ON(txsize > 20)) |
||
6084 | serge | 958 | return -E2BIG; |
4560 | Serge | 959 | |
5060 | serge | 960 | memcpy(txbuf + HEADER_SIZE, msg->buffer, msg->size); |
961 | |||
962 | ret = intel_dp_aux_ch(intel_dp, txbuf, txsize, rxbuf, rxsize); |
||
963 | if (ret > 0) { |
||
964 | msg->reply = rxbuf[0] >> 4; |
||
965 | |||
6084 | serge | 966 | if (ret > 1) { |
967 | /* Number of bytes written in a short write. */ |
||
968 | ret = clamp_t(int, rxbuf[1], 0, msg->size); |
||
969 | } else { |
||
970 | /* Return payload size. */ |
||
971 | ret = msg->size; |
||
972 | } |
||
5060 | serge | 973 | } |
6084 | serge | 974 | break; |
2330 | Serge | 975 | |
5060 | serge | 976 | case DP_AUX_NATIVE_READ: |
977 | case DP_AUX_I2C_READ: |
||
978 | txsize = msg->size ? HEADER_SIZE : BARE_ADDRESS_SIZE; |
||
979 | rxsize = msg->size + 1; |
||
2330 | Serge | 980 | |
5060 | serge | 981 | if (WARN_ON(rxsize > 20)) |
6084 | serge | 982 | return -E2BIG; |
4560 | Serge | 983 | |
5060 | serge | 984 | ret = intel_dp_aux_ch(intel_dp, txbuf, txsize, rxbuf, rxsize); |
985 | if (ret > 0) { |
||
986 | msg->reply = rxbuf[0] >> 4; |
||
987 | /* |
||
988 | * Assume happy day, and copy the data. The caller is |
||
989 | * expected to check msg->reply before touching it. |
||
990 | * |
||
991 | * Return payload size. |
||
992 | */ |
||
993 | ret--; |
||
994 | memcpy(msg->buffer, rxbuf + 1, ret); |
||
995 | } |
||
996 | break; |
||
2330 | Serge | 997 | |
5060 | serge | 998 | default: |
999 | ret = -EINVAL; |
||
1000 | break; |
||
1001 | } |
||
2330 | Serge | 1002 | |
6084 | serge | 1003 | return ret; |
2330 | Serge | 1004 | } |
1005 | |||
5060 | serge | 1006 | static void |
1007 | intel_dp_aux_init(struct intel_dp *intel_dp, struct intel_connector *connector) |
||
2330 | Serge | 1008 | { |
5060 | serge | 1009 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
6084 | serge | 1010 | struct drm_i915_private *dev_priv = dev->dev_private; |
5060 | serge | 1011 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
1012 | enum port port = intel_dig_port->port; |
||
6084 | serge | 1013 | struct ddi_vbt_port_info *info = &dev_priv->vbt.ddi_port_info[port]; |
5060 | serge | 1014 | const char *name = NULL; |
6084 | serge | 1015 | uint32_t porte_aux_ctl_reg = DPA_AUX_CH_CTL; |
2330 | Serge | 1016 | int ret; |
1017 | |||
6084 | serge | 1018 | /* On SKL we don't have Aux for port E so we rely on VBT to set |
1019 | * a proper alternate aux channel. |
||
1020 | */ |
||
1021 | if (IS_SKYLAKE(dev) && port == PORT_E) { |
||
1022 | switch (info->alternate_aux_channel) { |
||
1023 | case DP_AUX_B: |
||
1024 | porte_aux_ctl_reg = DPB_AUX_CH_CTL; |
||
1025 | break; |
||
1026 | case DP_AUX_C: |
||
1027 | porte_aux_ctl_reg = DPC_AUX_CH_CTL; |
||
1028 | break; |
||
1029 | case DP_AUX_D: |
||
1030 | porte_aux_ctl_reg = DPD_AUX_CH_CTL; |
||
1031 | break; |
||
1032 | case DP_AUX_A: |
||
1033 | default: |
||
1034 | porte_aux_ctl_reg = DPA_AUX_CH_CTL; |
||
1035 | } |
||
1036 | } |
||
1037 | |||
5060 | serge | 1038 | switch (port) { |
1039 | case PORT_A: |
||
1040 | intel_dp->aux_ch_ctl_reg = DPA_AUX_CH_CTL; |
||
1041 | name = "DPDDC-A"; |
||
2330 | Serge | 1042 | break; |
5060 | serge | 1043 | case PORT_B: |
1044 | intel_dp->aux_ch_ctl_reg = PCH_DPB_AUX_CH_CTL; |
||
1045 | name = "DPDDC-B"; |
||
2330 | Serge | 1046 | break; |
5060 | serge | 1047 | case PORT_C: |
1048 | intel_dp->aux_ch_ctl_reg = PCH_DPC_AUX_CH_CTL; |
||
1049 | name = "DPDDC-C"; |
||
1050 | break; |
||
1051 | case PORT_D: |
||
1052 | intel_dp->aux_ch_ctl_reg = PCH_DPD_AUX_CH_CTL; |
||
1053 | name = "DPDDC-D"; |
||
1054 | break; |
||
6084 | serge | 1055 | case PORT_E: |
1056 | intel_dp->aux_ch_ctl_reg = porte_aux_ctl_reg; |
||
1057 | name = "DPDDC-E"; |
||
1058 | break; |
||
2330 | Serge | 1059 | default: |
5060 | serge | 1060 | BUG(); |
2330 | Serge | 1061 | } |
1062 | |||
5354 | serge | 1063 | /* |
1064 | * The AUX_CTL register is usually DP_CTL + 0x10. |
||
1065 | * |
||
1066 | * On Haswell and Broadwell though: |
||
1067 | * - Both port A DDI_BUF_CTL and DDI_AUX_CTL are on the CPU |
||
1068 | * - Port B/C/D AUX channels are on the PCH, DDI_BUF_CTL on the CPU |
||
1069 | * |
||
1070 | * Skylake moves AUX_CTL back next to DDI_BUF_CTL, on the CPU. |
||
1071 | */ |
||
6084 | serge | 1072 | if (!IS_HASWELL(dev) && !IS_BROADWELL(dev) && port != PORT_E) |
5060 | serge | 1073 | intel_dp->aux_ch_ctl_reg = intel_dp->output_reg + 0x10; |
2330 | Serge | 1074 | |
5060 | serge | 1075 | intel_dp->aux.name = name; |
1076 | intel_dp->aux.dev = dev->dev; |
||
1077 | intel_dp->aux.transfer = intel_dp_aux_transfer; |
||
2330 | Serge | 1078 | |
6084 | serge | 1079 | DRM_DEBUG_KMS("registering %s bus for %s\n", name, |
1080 | ""); |
||
5060 | serge | 1081 | |
1082 | ret = drm_dp_aux_register(&intel_dp->aux); |
||
6084 | serge | 1083 | if (ret < 0) { |
5060 | serge | 1084 | DRM_ERROR("drm_dp_aux_register() for %s failed (%d)\n", |
1085 | name, ret); |
||
1086 | return; |
||
2330 | Serge | 1087 | } |
6103 | serge | 1088 | |
1089 | ret = sysfs_create_link(&connector->base.kdev->kobj, |
||
1090 | &intel_dp->aux.ddc.dev.kobj, |
||
1091 | intel_dp->aux.ddc.dev.kobj.name); |
||
1092 | if (ret < 0) { |
||
1093 | DRM_ERROR("sysfs_create_link() for %s failed (%d)\n", name, ret); |
||
1094 | drm_dp_aux_unregister(&intel_dp->aux); |
||
1095 | } |
||
5060 | serge | 1096 | } |
2330 | Serge | 1097 | |
5060 | serge | 1098 | static void |
1099 | intel_dp_connector_unregister(struct intel_connector *intel_connector) |
||
1100 | { |
||
1101 | struct intel_dp *intel_dp = intel_attached_dp(&intel_connector->base); |
||
4560 | Serge | 1102 | |
6103 | serge | 1103 | if (!intel_connector->mst_port) |
1104 | sysfs_remove_link(&intel_connector->base.kdev->kobj, |
||
1105 | intel_dp->aux.ddc.dev.kobj.name); |
||
5060 | serge | 1106 | intel_connector_unregister(intel_connector); |
2330 | Serge | 1107 | } |
1108 | |||
5060 | serge | 1109 | static void |
6084 | serge | 1110 | skl_edp_set_pll_config(struct intel_crtc_state *pipe_config) |
5354 | serge | 1111 | { |
1112 | u32 ctrl1; |
||
1113 | |||
6084 | serge | 1114 | memset(&pipe_config->dpll_hw_state, 0, |
1115 | sizeof(pipe_config->dpll_hw_state)); |
||
1116 | |||
5354 | serge | 1117 | pipe_config->ddi_pll_sel = SKL_DPLL0; |
1118 | pipe_config->dpll_hw_state.cfgcr1 = 0; |
||
1119 | pipe_config->dpll_hw_state.cfgcr2 = 0; |
||
1120 | |||
1121 | ctrl1 = DPLL_CTRL1_OVERRIDE(SKL_DPLL0); |
||
6084 | serge | 1122 | switch (pipe_config->port_clock / 2) { |
1123 | case 81000: |
||
1124 | ctrl1 |= DPLL_CTRL1_LINK_RATE(DPLL_CTRL1_LINK_RATE_810, |
||
5354 | serge | 1125 | SKL_DPLL0); |
1126 | break; |
||
6084 | serge | 1127 | case 135000: |
1128 | ctrl1 |= DPLL_CTRL1_LINK_RATE(DPLL_CTRL1_LINK_RATE_1350, |
||
5354 | serge | 1129 | SKL_DPLL0); |
1130 | break; |
||
6084 | serge | 1131 | case 270000: |
1132 | ctrl1 |= DPLL_CTRL1_LINK_RATE(DPLL_CTRL1_LINK_RATE_2700, |
||
5354 | serge | 1133 | SKL_DPLL0); |
1134 | break; |
||
6084 | serge | 1135 | case 162000: |
1136 | ctrl1 |= DPLL_CTRL1_LINK_RATE(DPLL_CTRL1_LINK_RATE_1620, |
||
1137 | SKL_DPLL0); |
||
1138 | break; |
||
1139 | /* TBD: For DP link rates 2.16 GHz and 4.32 GHz, VCO is 8640 which |
||
1140 | results in CDCLK change. Need to handle the change of CDCLK by |
||
1141 | disabling pipes and re-enabling them */ |
||
1142 | case 108000: |
||
1143 | ctrl1 |= DPLL_CTRL1_LINK_RATE(DPLL_CTRL1_LINK_RATE_1080, |
||
1144 | SKL_DPLL0); |
||
1145 | break; |
||
1146 | case 216000: |
||
1147 | ctrl1 |= DPLL_CTRL1_LINK_RATE(DPLL_CTRL1_LINK_RATE_2160, |
||
1148 | SKL_DPLL0); |
||
1149 | break; |
||
1150 | |||
5354 | serge | 1151 | } |
1152 | pipe_config->dpll_hw_state.ctrl1 = ctrl1; |
||
1153 | } |
||
1154 | |||
6084 | serge | 1155 | void |
1156 | hsw_dp_set_ddi_pll_sel(struct intel_crtc_state *pipe_config) |
||
2330 | Serge | 1157 | { |
6084 | serge | 1158 | memset(&pipe_config->dpll_hw_state, 0, |
1159 | sizeof(pipe_config->dpll_hw_state)); |
||
1160 | |||
1161 | switch (pipe_config->port_clock / 2) { |
||
1162 | case 81000: |
||
5060 | serge | 1163 | pipe_config->ddi_pll_sel = PORT_CLK_SEL_LCPLL_810; |
1164 | break; |
||
6084 | serge | 1165 | case 135000: |
5060 | serge | 1166 | pipe_config->ddi_pll_sel = PORT_CLK_SEL_LCPLL_1350; |
1167 | break; |
||
6084 | serge | 1168 | case 270000: |
5060 | serge | 1169 | pipe_config->ddi_pll_sel = PORT_CLK_SEL_LCPLL_2700; |
1170 | break; |
||
1171 | } |
||
2330 | Serge | 1172 | } |
1173 | |||
6084 | serge | 1174 | static int |
1175 | intel_dp_sink_rates(struct intel_dp *intel_dp, const int **sink_rates) |
||
1176 | { |
||
1177 | if (intel_dp->num_sink_rates) { |
||
1178 | *sink_rates = intel_dp->sink_rates; |
||
1179 | return intel_dp->num_sink_rates; |
||
1180 | } |
||
1181 | |||
1182 | *sink_rates = default_rates; |
||
1183 | |||
1184 | return (intel_dp_max_link_bw(intel_dp) >> 3) + 1; |
||
1185 | } |
||
1186 | |||
1187 | static bool intel_dp_source_supports_hbr2(struct drm_device *dev) |
||
1188 | { |
||
1189 | /* WaDisableHBR2:skl */ |
||
1190 | if (IS_SKYLAKE(dev) && INTEL_REVID(dev) <= SKL_REVID_B0) |
||
1191 | return false; |
||
1192 | |||
1193 | if ((IS_HASWELL(dev) && !IS_HSW_ULX(dev)) || IS_BROADWELL(dev) || |
||
1194 | (INTEL_INFO(dev)->gen >= 9)) |
||
1195 | return true; |
||
1196 | else |
||
1197 | return false; |
||
1198 | } |
||
1199 | |||
1200 | static int |
||
1201 | intel_dp_source_rates(struct drm_device *dev, const int **source_rates) |
||
1202 | { |
||
1203 | int size; |
||
1204 | |||
1205 | if (IS_BROXTON(dev)) { |
||
1206 | *source_rates = bxt_rates; |
||
1207 | size = ARRAY_SIZE(bxt_rates); |
||
1208 | } else if (IS_SKYLAKE(dev)) { |
||
1209 | *source_rates = skl_rates; |
||
1210 | size = ARRAY_SIZE(skl_rates); |
||
1211 | } else { |
||
1212 | *source_rates = default_rates; |
||
1213 | size = ARRAY_SIZE(default_rates); |
||
1214 | } |
||
1215 | |||
1216 | /* This depends on the fact that 5.4 is last value in the array */ |
||
1217 | if (!intel_dp_source_supports_hbr2(dev)) |
||
1218 | size--; |
||
1219 | |||
1220 | return size; |
||
1221 | } |
||
1222 | |||
4104 | Serge | 1223 | static void |
1224 | intel_dp_set_clock(struct intel_encoder *encoder, |
||
6084 | serge | 1225 | struct intel_crtc_state *pipe_config) |
4104 | Serge | 1226 | { |
1227 | struct drm_device *dev = encoder->base.dev; |
||
4560 | Serge | 1228 | const struct dp_link_dpll *divisor = NULL; |
1229 | int i, count = 0; |
||
4104 | Serge | 1230 | |
1231 | if (IS_G4X(dev)) { |
||
4560 | Serge | 1232 | divisor = gen4_dpll; |
1233 | count = ARRAY_SIZE(gen4_dpll); |
||
4104 | Serge | 1234 | } else if (HAS_PCH_SPLIT(dev)) { |
4560 | Serge | 1235 | divisor = pch_dpll; |
1236 | count = ARRAY_SIZE(pch_dpll); |
||
5060 | serge | 1237 | } else if (IS_CHERRYVIEW(dev)) { |
1238 | divisor = chv_dpll; |
||
1239 | count = ARRAY_SIZE(chv_dpll); |
||
4560 | Serge | 1240 | } else if (IS_VALLEYVIEW(dev)) { |
1241 | divisor = vlv_dpll; |
||
1242 | count = ARRAY_SIZE(vlv_dpll); |
||
5060 | serge | 1243 | } |
4560 | Serge | 1244 | |
1245 | if (divisor && count) { |
||
1246 | for (i = 0; i < count; i++) { |
||
6084 | serge | 1247 | if (pipe_config->port_clock == divisor[i].clock) { |
4560 | Serge | 1248 | pipe_config->dpll = divisor[i].dpll; |
5060 | serge | 1249 | pipe_config->clock_set = true; |
4560 | Serge | 1250 | break; |
1251 | } |
||
1252 | } |
||
4104 | Serge | 1253 | } |
1254 | } |
||
1255 | |||
6084 | serge | 1256 | static int intersect_rates(const int *source_rates, int source_len, |
1257 | const int *sink_rates, int sink_len, |
||
1258 | int *common_rates) |
||
1259 | { |
||
1260 | int i = 0, j = 0, k = 0; |
||
1261 | |||
1262 | while (i < source_len && j < sink_len) { |
||
1263 | if (source_rates[i] == sink_rates[j]) { |
||
1264 | if (WARN_ON(k >= DP_MAX_SUPPORTED_RATES)) |
||
1265 | return k; |
||
1266 | common_rates[k] = source_rates[i]; |
||
1267 | ++k; |
||
1268 | ++i; |
||
1269 | ++j; |
||
1270 | } else if (source_rates[i] < sink_rates[j]) { |
||
1271 | ++i; |
||
1272 | } else { |
||
1273 | ++j; |
||
1274 | } |
||
1275 | } |
||
1276 | return k; |
||
1277 | } |
||
1278 | |||
1279 | static int intel_dp_common_rates(struct intel_dp *intel_dp, |
||
1280 | int *common_rates) |
||
1281 | { |
||
1282 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
||
1283 | const int *source_rates, *sink_rates; |
||
1284 | int source_len, sink_len; |
||
1285 | |||
1286 | sink_len = intel_dp_sink_rates(intel_dp, &sink_rates); |
||
1287 | source_len = intel_dp_source_rates(dev, &source_rates); |
||
1288 | |||
1289 | return intersect_rates(source_rates, source_len, |
||
1290 | sink_rates, sink_len, |
||
1291 | common_rates); |
||
1292 | } |
||
1293 | |||
1294 | static void snprintf_int_array(char *str, size_t len, |
||
1295 | const int *array, int nelem) |
||
1296 | { |
||
1297 | int i; |
||
1298 | |||
1299 | str[0] = '\0'; |
||
1300 | |||
1301 | for (i = 0; i < nelem; i++) { |
||
1302 | int r = snprintf(str, len, "%s%d", i ? ", " : "", array[i]); |
||
1303 | if (r >= len) |
||
1304 | return; |
||
1305 | str += r; |
||
1306 | len -= r; |
||
1307 | } |
||
1308 | } |
||
1309 | |||
1310 | static void intel_dp_print_rates(struct intel_dp *intel_dp) |
||
1311 | { |
||
1312 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
||
1313 | const int *source_rates, *sink_rates; |
||
1314 | int source_len, sink_len, common_len; |
||
1315 | int common_rates[DP_MAX_SUPPORTED_RATES]; |
||
1316 | char str[128]; /* FIXME: too big for stack? */ |
||
1317 | |||
1318 | if ((drm_debug & DRM_UT_KMS) == 0) |
||
1319 | return; |
||
1320 | |||
1321 | source_len = intel_dp_source_rates(dev, &source_rates); |
||
1322 | snprintf_int_array(str, sizeof(str), source_rates, source_len); |
||
1323 | DRM_DEBUG_KMS("source rates: %s\n", str); |
||
1324 | |||
1325 | sink_len = intel_dp_sink_rates(intel_dp, &sink_rates); |
||
1326 | snprintf_int_array(str, sizeof(str), sink_rates, sink_len); |
||
1327 | DRM_DEBUG_KMS("sink rates: %s\n", str); |
||
1328 | |||
1329 | common_len = intel_dp_common_rates(intel_dp, common_rates); |
||
1330 | snprintf_int_array(str, sizeof(str), common_rates, common_len); |
||
1331 | DRM_DEBUG_KMS("common rates: %s\n", str); |
||
1332 | } |
||
1333 | |||
1334 | static int rate_to_index(int find, const int *rates) |
||
1335 | { |
||
1336 | int i = 0; |
||
1337 | |||
1338 | for (i = 0; i < DP_MAX_SUPPORTED_RATES; ++i) |
||
1339 | if (find == rates[i]) |
||
1340 | break; |
||
1341 | |||
1342 | return i; |
||
1343 | } |
||
1344 | |||
1345 | int |
||
1346 | intel_dp_max_link_rate(struct intel_dp *intel_dp) |
||
1347 | { |
||
1348 | int rates[DP_MAX_SUPPORTED_RATES] = {}; |
||
1349 | int len; |
||
1350 | |||
1351 | len = intel_dp_common_rates(intel_dp, rates); |
||
1352 | if (WARN_ON(len <= 0)) |
||
1353 | return 162000; |
||
1354 | |||
1355 | return rates[rate_to_index(0, rates) - 1]; |
||
1356 | } |
||
1357 | |||
1358 | int intel_dp_rate_select(struct intel_dp *intel_dp, int rate) |
||
1359 | { |
||
1360 | return rate_to_index(rate, intel_dp->sink_rates); |
||
1361 | } |
||
1362 | |||
1363 | static void intel_dp_compute_rate(struct intel_dp *intel_dp, int port_clock, |
||
1364 | uint8_t *link_bw, uint8_t *rate_select) |
||
1365 | { |
||
1366 | if (intel_dp->num_sink_rates) { |
||
1367 | *link_bw = 0; |
||
1368 | *rate_select = |
||
1369 | intel_dp_rate_select(intel_dp, port_clock); |
||
1370 | } else { |
||
1371 | *link_bw = drm_dp_link_rate_to_bw_code(port_clock); |
||
1372 | *rate_select = 0; |
||
1373 | } |
||
1374 | } |
||
1375 | |||
3243 | Serge | 1376 | bool |
3746 | Serge | 1377 | intel_dp_compute_config(struct intel_encoder *encoder, |
6084 | serge | 1378 | struct intel_crtc_state *pipe_config) |
2330 | Serge | 1379 | { |
3746 | Serge | 1380 | struct drm_device *dev = encoder->base.dev; |
1381 | struct drm_i915_private *dev_priv = dev->dev_private; |
||
6084 | serge | 1382 | struct drm_display_mode *adjusted_mode = &pipe_config->base.adjusted_mode; |
3746 | Serge | 1383 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
4104 | Serge | 1384 | enum port port = dp_to_dig_port(intel_dp)->port; |
6084 | serge | 1385 | struct intel_crtc *intel_crtc = to_intel_crtc(pipe_config->base.crtc); |
3243 | Serge | 1386 | struct intel_connector *intel_connector = intel_dp->attached_connector; |
2330 | Serge | 1387 | int lane_count, clock; |
5060 | serge | 1388 | int min_lane_count = 1; |
1389 | int max_lane_count = intel_dp_max_lane_count(intel_dp); |
||
1390 | /* Conveniently, the link BW constants become indices with a shift...*/ |
||
1391 | int min_clock = 0; |
||
6084 | serge | 1392 | int max_clock; |
3031 | serge | 1393 | int bpp, mode_rate; |
4104 | Serge | 1394 | int link_avail, link_clock; |
6084 | serge | 1395 | int common_rates[DP_MAX_SUPPORTED_RATES] = {}; |
1396 | int common_len; |
||
1397 | uint8_t link_bw, rate_select; |
||
2330 | Serge | 1398 | |
6084 | serge | 1399 | common_len = intel_dp_common_rates(intel_dp, common_rates); |
1400 | |||
1401 | /* No common link rates between source and sink */ |
||
1402 | WARN_ON(common_len <= 0); |
||
1403 | |||
1404 | max_clock = common_len - 1; |
||
1405 | |||
4104 | Serge | 1406 | if (HAS_PCH_SPLIT(dev) && !HAS_DDI(dev) && port != PORT_A) |
3746 | Serge | 1407 | pipe_config->has_pch_encoder = true; |
1408 | |||
1409 | pipe_config->has_dp_encoder = true; |
||
5354 | serge | 1410 | pipe_config->has_drrs = false; |
6084 | serge | 1411 | pipe_config->has_audio = intel_dp->has_audio && port != PORT_A; |
3746 | Serge | 1412 | |
3243 | Serge | 1413 | if (is_edp(intel_dp) && intel_connector->panel.fixed_mode) { |
1414 | intel_fixed_panel_mode(intel_connector->panel.fixed_mode, |
||
1415 | adjusted_mode); |
||
6084 | serge | 1416 | |
1417 | if (INTEL_INFO(dev)->gen >= 9) { |
||
1418 | int ret; |
||
1419 | ret = skl_update_scaler_crtc(pipe_config); |
||
1420 | if (ret) |
||
1421 | return ret; |
||
1422 | } |
||
1423 | |||
4104 | Serge | 1424 | if (!HAS_PCH_SPLIT(dev)) |
1425 | intel_gmch_panel_fitting(intel_crtc, pipe_config, |
||
1426 | intel_connector->panel.fitting_mode); |
||
1427 | else |
||
1428 | intel_pch_panel_fitting(intel_crtc, pipe_config, |
||
1429 | intel_connector->panel.fitting_mode); |
||
2330 | Serge | 1430 | } |
1431 | |||
3031 | serge | 1432 | if (adjusted_mode->flags & DRM_MODE_FLAG_DBLCLK) |
1433 | return false; |
||
1434 | |||
1435 | DRM_DEBUG_KMS("DP link computation with max lane count %i " |
||
6084 | serge | 1436 | "max bw %d pixel clock %iKHz\n", |
1437 | max_lane_count, common_rates[max_clock], |
||
4560 | Serge | 1438 | adjusted_mode->crtc_clock); |
3031 | serge | 1439 | |
3746 | Serge | 1440 | /* Walk through all bpp values. Luckily they're all nicely spaced with 2 |
1441 | * bpc in between. */ |
||
4104 | Serge | 1442 | bpp = pipe_config->pipe_bpp; |
5060 | serge | 1443 | if (is_edp(intel_dp)) { |
3746 | Serge | 1444 | |
6084 | serge | 1445 | /* Get bpp from vbt only for panels that dont have bpp in edid */ |
1446 | if (intel_connector->base.display_info.bpc == 0 && |
||
1447 | (dev_priv->vbt.edp_bpp && dev_priv->vbt.edp_bpp < bpp)) { |
||
1448 | DRM_DEBUG_KMS("clamping bpp for eDP panel to BIOS-provided %i\n", |
||
1449 | dev_priv->vbt.edp_bpp); |
||
1450 | bpp = dev_priv->vbt.edp_bpp; |
||
1451 | } |
||
1452 | |||
5354 | serge | 1453 | /* |
1454 | * Use the maximum clock and number of lanes the eDP panel |
||
1455 | * advertizes being capable of. The panels are generally |
||
1456 | * designed to support only a single clock and lane |
||
1457 | * configuration, and typically these values correspond to the |
||
1458 | * native resolution of the panel. |
||
1459 | */ |
||
6084 | serge | 1460 | min_lane_count = max_lane_count; |
5354 | serge | 1461 | min_clock = max_clock; |
5060 | serge | 1462 | } |
1463 | |||
3746 | Serge | 1464 | for (; bpp >= 6*3; bpp -= 2*3) { |
4560 | Serge | 1465 | mode_rate = intel_dp_link_required(adjusted_mode->crtc_clock, |
1466 | bpp); |
||
3746 | Serge | 1467 | |
5060 | serge | 1468 | for (clock = min_clock; clock <= max_clock; clock++) { |
6084 | serge | 1469 | for (lane_count = min_lane_count; |
1470 | lane_count <= max_lane_count; |
||
1471 | lane_count <<= 1) { |
||
1472 | |||
1473 | link_clock = common_rates[clock]; |
||
3746 | Serge | 1474 | link_avail = intel_dp_max_data_rate(link_clock, |
1475 | lane_count); |
||
1476 | |||
1477 | if (mode_rate <= link_avail) { |
||
1478 | goto found; |
||
1479 | } |
||
1480 | } |
||
1481 | } |
||
1482 | } |
||
1483 | |||
6084 | serge | 1484 | return false; |
3031 | serge | 1485 | |
3746 | Serge | 1486 | found: |
3480 | Serge | 1487 | if (intel_dp->color_range_auto) { |
1488 | /* |
||
1489 | * See: |
||
1490 | * CEA-861-E - 5.1 Default Encoding Parameters |
||
1491 | * VESA DisplayPort Ver.1.2a - 5.1.1.1 Video Colorimetry |
||
1492 | */ |
||
6084 | serge | 1493 | pipe_config->limited_color_range = |
1494 | bpp != 18 && drm_match_cea_mode(adjusted_mode) > 1; |
||
1495 | } else { |
||
1496 | pipe_config->limited_color_range = |
||
1497 | intel_dp->limited_color_range; |
||
3480 | Serge | 1498 | } |
1499 | |||
6084 | serge | 1500 | pipe_config->lane_count = lane_count; |
3480 | Serge | 1501 | |
3746 | Serge | 1502 | pipe_config->pipe_bpp = bpp; |
6084 | serge | 1503 | pipe_config->port_clock = common_rates[clock]; |
3746 | Serge | 1504 | |
6084 | serge | 1505 | intel_dp_compute_rate(intel_dp, pipe_config->port_clock, |
1506 | &link_bw, &rate_select); |
||
1507 | |||
1508 | DRM_DEBUG_KMS("DP link bw %02x rate select %02x lane count %d clock %d bpp %d\n", |
||
1509 | link_bw, rate_select, pipe_config->lane_count, |
||
4104 | Serge | 1510 | pipe_config->port_clock, bpp); |
6084 | serge | 1511 | DRM_DEBUG_KMS("DP link bw required %i available %i\n", |
1512 | mode_rate, link_avail); |
||
2330 | Serge | 1513 | |
3746 | Serge | 1514 | intel_link_compute_m_n(bpp, lane_count, |
4560 | Serge | 1515 | adjusted_mode->crtc_clock, |
1516 | pipe_config->port_clock, |
||
3746 | Serge | 1517 | &pipe_config->dp_m_n); |
2330 | Serge | 1518 | |
5060 | serge | 1519 | if (intel_connector->panel.downclock_mode != NULL && |
6084 | serge | 1520 | dev_priv->drrs.type == SEAMLESS_DRRS_SUPPORT) { |
5354 | serge | 1521 | pipe_config->has_drrs = true; |
5060 | serge | 1522 | intel_link_compute_m_n(bpp, lane_count, |
1523 | intel_connector->panel.downclock_mode->clock, |
||
1524 | pipe_config->port_clock, |
||
1525 | &pipe_config->dp_m2_n2); |
||
1526 | } |
||
1527 | |||
5354 | serge | 1528 | if (IS_SKYLAKE(dev) && is_edp(intel_dp)) |
6084 | serge | 1529 | skl_edp_set_pll_config(pipe_config); |
1530 | else if (IS_BROXTON(dev)) |
||
1531 | /* handled in ddi */; |
||
5354 | serge | 1532 | else if (IS_HASWELL(dev) || IS_BROADWELL(dev)) |
6084 | serge | 1533 | hsw_dp_set_ddi_pll_sel(pipe_config); |
5060 | serge | 1534 | else |
6084 | serge | 1535 | intel_dp_set_clock(encoder, pipe_config); |
4104 | Serge | 1536 | |
3746 | Serge | 1537 | return true; |
2327 | Serge | 1538 | } |
1539 | |||
4104 | Serge | 1540 | static void ironlake_set_pll_cpu_edp(struct intel_dp *intel_dp) |
3480 | Serge | 1541 | { |
4104 | Serge | 1542 | struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp); |
1543 | struct intel_crtc *crtc = to_intel_crtc(dig_port->base.base.crtc); |
||
1544 | struct drm_device *dev = crtc->base.dev; |
||
3480 | Serge | 1545 | struct drm_i915_private *dev_priv = dev->dev_private; |
1546 | u32 dpa_ctl; |
||
1547 | |||
6084 | serge | 1548 | DRM_DEBUG_KMS("eDP PLL enable for clock %d\n", |
1549 | crtc->config->port_clock); |
||
3480 | Serge | 1550 | dpa_ctl = I915_READ(DP_A); |
1551 | dpa_ctl &= ~DP_PLL_FREQ_MASK; |
||
1552 | |||
6084 | serge | 1553 | if (crtc->config->port_clock == 162000) { |
3480 | Serge | 1554 | /* For a long time we've carried around a ILK-DevA w/a for the |
1555 | * 160MHz clock. If we're really unlucky, it's still required. |
||
1556 | */ |
||
1557 | DRM_DEBUG_KMS("160MHz cpu eDP clock, might need ilk devA w/a\n"); |
||
1558 | dpa_ctl |= DP_PLL_FREQ_160MHZ; |
||
4104 | Serge | 1559 | intel_dp->DP |= DP_PLL_FREQ_160MHZ; |
3480 | Serge | 1560 | } else { |
1561 | dpa_ctl |= DP_PLL_FREQ_270MHZ; |
||
4104 | Serge | 1562 | intel_dp->DP |= DP_PLL_FREQ_270MHZ; |
3480 | Serge | 1563 | } |
1564 | |||
1565 | I915_WRITE(DP_A, dpa_ctl); |
||
1566 | |||
1567 | POSTING_READ(DP_A); |
||
1568 | udelay(500); |
||
1569 | } |
||
1570 | |||
6084 | serge | 1571 | void intel_dp_set_link_params(struct intel_dp *intel_dp, |
1572 | const struct intel_crtc_state *pipe_config) |
||
1573 | { |
||
1574 | intel_dp->link_rate = pipe_config->port_clock; |
||
1575 | intel_dp->lane_count = pipe_config->lane_count; |
||
1576 | } |
||
1577 | |||
5060 | serge | 1578 | static void intel_dp_prepare(struct intel_encoder *encoder) |
2330 | Serge | 1579 | { |
4104 | Serge | 1580 | struct drm_device *dev = encoder->base.dev; |
2342 | Serge | 1581 | struct drm_i915_private *dev_priv = dev->dev_private; |
4104 | Serge | 1582 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
1583 | enum port port = dp_to_dig_port(intel_dp)->port; |
||
1584 | struct intel_crtc *crtc = to_intel_crtc(encoder->base.crtc); |
||
6084 | serge | 1585 | const struct drm_display_mode *adjusted_mode = &crtc->config->base.adjusted_mode; |
2327 | Serge | 1586 | |
6084 | serge | 1587 | intel_dp_set_link_params(intel_dp, crtc->config); |
1588 | |||
2342 | Serge | 1589 | /* |
1590 | * There are four kinds of DP registers: |
||
1591 | * |
||
1592 | * IBX PCH |
||
1593 | * SNB CPU |
||
1594 | * IVB CPU |
||
1595 | * CPT PCH |
||
1596 | * |
||
1597 | * IBX PCH and CPU are the same for almost everything, |
||
1598 | * except that the CPU DP PLL is configured in this |
||
1599 | * register |
||
1600 | * |
||
1601 | * CPT PCH is quite different, having many bits moved |
||
1602 | * to the TRANS_DP_CTL register instead. That |
||
1603 | * configuration happens (oddly) in ironlake_pch_enable |
||
1604 | */ |
||
2327 | Serge | 1605 | |
2342 | Serge | 1606 | /* Preserve the BIOS-computed detected bit. This is |
1607 | * supposed to be read-only. |
||
1608 | */ |
||
1609 | intel_dp->DP = I915_READ(intel_dp->output_reg) & DP_DETECTED; |
||
2327 | Serge | 1610 | |
2342 | Serge | 1611 | /* Handle DP bits in common between all three register formats */ |
1612 | intel_dp->DP |= DP_VOLTAGE_0_4 | DP_PRE_EMPHASIS_0; |
||
6084 | serge | 1613 | intel_dp->DP |= DP_PORT_WIDTH(crtc->config->lane_count); |
2342 | Serge | 1614 | |
6084 | serge | 1615 | if (crtc->config->has_audio) |
2330 | Serge | 1616 | intel_dp->DP |= DP_AUDIO_OUTPUT_ENABLE; |
2327 | Serge | 1617 | |
2342 | Serge | 1618 | /* Split out the IBX/CPU vs CPT settings */ |
1619 | |||
6084 | serge | 1620 | if (IS_GEN7(dev) && port == PORT_A) { |
2342 | Serge | 1621 | if (adjusted_mode->flags & DRM_MODE_FLAG_PHSYNC) |
1622 | intel_dp->DP |= DP_SYNC_HS_HIGH; |
||
1623 | if (adjusted_mode->flags & DRM_MODE_FLAG_PVSYNC) |
||
1624 | intel_dp->DP |= DP_SYNC_VS_HIGH; |
||
1625 | intel_dp->DP |= DP_LINK_TRAIN_OFF_CPT; |
||
1626 | |||
4560 | Serge | 1627 | if (drm_dp_enhanced_frame_cap(intel_dp->dpcd)) |
2342 | Serge | 1628 | intel_dp->DP |= DP_ENHANCED_FRAMING; |
1629 | |||
4104 | Serge | 1630 | intel_dp->DP |= crtc->pipe << 29; |
6084 | serge | 1631 | } else if (HAS_PCH_CPT(dev) && port != PORT_A) { |
1632 | u32 trans_dp; |
||
2342 | Serge | 1633 | |
6084 | serge | 1634 | intel_dp->DP |= DP_LINK_TRAIN_OFF_CPT; |
1635 | |||
1636 | trans_dp = I915_READ(TRANS_DP_CTL(crtc->pipe)); |
||
1637 | if (drm_dp_enhanced_frame_cap(intel_dp->dpcd)) |
||
1638 | trans_dp |= TRANS_DP_ENH_FRAMING; |
||
1639 | else |
||
1640 | trans_dp &= ~TRANS_DP_ENH_FRAMING; |
||
1641 | I915_WRITE(TRANS_DP_CTL(crtc->pipe), trans_dp); |
||
1642 | } else { |
||
1643 | if (!HAS_PCH_SPLIT(dev) && !IS_VALLEYVIEW(dev) && |
||
1644 | crtc->config->limited_color_range) |
||
1645 | intel_dp->DP |= DP_COLOR_RANGE_16_235; |
||
1646 | |||
2342 | Serge | 1647 | if (adjusted_mode->flags & DRM_MODE_FLAG_PHSYNC) |
1648 | intel_dp->DP |= DP_SYNC_HS_HIGH; |
||
1649 | if (adjusted_mode->flags & DRM_MODE_FLAG_PVSYNC) |
||
1650 | intel_dp->DP |= DP_SYNC_VS_HIGH; |
||
1651 | intel_dp->DP |= DP_LINK_TRAIN_OFF; |
||
1652 | |||
4560 | Serge | 1653 | if (drm_dp_enhanced_frame_cap(intel_dp->dpcd)) |
6084 | serge | 1654 | intel_dp->DP |= DP_ENHANCED_FRAMING; |
2342 | Serge | 1655 | |
6084 | serge | 1656 | if (IS_CHERRYVIEW(dev)) |
5060 | serge | 1657 | intel_dp->DP |= DP_PIPE_SELECT_CHV(crtc->pipe); |
6084 | serge | 1658 | else if (crtc->pipe == PIPE_B) |
1659 | intel_dp->DP |= DP_PIPEB_SELECT; |
||
2342 | Serge | 1660 | } |
2330 | Serge | 1661 | } |
2327 | Serge | 1662 | |
5060 | serge | 1663 | #define IDLE_ON_MASK (PP_ON | PP_SEQUENCE_MASK | 0 | PP_SEQUENCE_STATE_MASK) |
1664 | #define IDLE_ON_VALUE (PP_ON | PP_SEQUENCE_NONE | 0 | PP_SEQUENCE_STATE_ON_IDLE) |
||
2342 | Serge | 1665 | |
5060 | serge | 1666 | #define IDLE_OFF_MASK (PP_ON | PP_SEQUENCE_MASK | 0 | 0) |
1667 | #define IDLE_OFF_VALUE (0 | PP_SEQUENCE_NONE | 0 | 0) |
||
2342 | Serge | 1668 | |
5060 | serge | 1669 | #define IDLE_CYCLE_MASK (PP_ON | PP_SEQUENCE_MASK | PP_CYCLE_DELAY_ACTIVE | PP_SEQUENCE_STATE_MASK) |
1670 | #define IDLE_CYCLE_VALUE (0 | PP_SEQUENCE_NONE | 0 | PP_SEQUENCE_STATE_OFF_IDLE) |
||
2342 | Serge | 1671 | |
5060 | serge | 1672 | static void wait_panel_status(struct intel_dp *intel_dp, |
2342 | Serge | 1673 | u32 mask, |
1674 | u32 value) |
||
1675 | { |
||
3243 | Serge | 1676 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
2342 | Serge | 1677 | struct drm_i915_private *dev_priv = dev->dev_private; |
3746 | Serge | 1678 | u32 pp_stat_reg, pp_ctrl_reg; |
2342 | Serge | 1679 | |
5354 | serge | 1680 | lockdep_assert_held(&dev_priv->pps_mutex); |
1681 | |||
4560 | Serge | 1682 | pp_stat_reg = _pp_stat_reg(intel_dp); |
1683 | pp_ctrl_reg = _pp_ctrl_reg(intel_dp); |
||
3746 | Serge | 1684 | |
2342 | Serge | 1685 | DRM_DEBUG_KMS("mask %08x value %08x status %08x control %08x\n", |
6084 | serge | 1686 | mask, value, |
3746 | Serge | 1687 | I915_READ(pp_stat_reg), |
1688 | I915_READ(pp_ctrl_reg)); |
||
2342 | Serge | 1689 | |
3746 | Serge | 1690 | if (_wait_for((I915_READ(pp_stat_reg) & mask) == value, 5000, 10)) { |
2342 | Serge | 1691 | DRM_ERROR("Panel status timeout: status %08x control %08x\n", |
3746 | Serge | 1692 | I915_READ(pp_stat_reg), |
1693 | I915_READ(pp_ctrl_reg)); |
||
2342 | Serge | 1694 | } |
4560 | Serge | 1695 | |
1696 | DRM_DEBUG_KMS("Wait complete\n"); |
||
2342 | Serge | 1697 | } |
1698 | |||
5060 | serge | 1699 | static void wait_panel_on(struct intel_dp *intel_dp) |
2342 | Serge | 1700 | { |
1701 | DRM_DEBUG_KMS("Wait for panel power on\n"); |
||
5060 | serge | 1702 | wait_panel_status(intel_dp, IDLE_ON_MASK, IDLE_ON_VALUE); |
2342 | Serge | 1703 | } |
1704 | |||
5060 | serge | 1705 | static void wait_panel_off(struct intel_dp *intel_dp) |
2342 | Serge | 1706 | { |
1707 | DRM_DEBUG_KMS("Wait for panel power off time\n"); |
||
5060 | serge | 1708 | wait_panel_status(intel_dp, IDLE_OFF_MASK, IDLE_OFF_VALUE); |
2342 | Serge | 1709 | } |
1710 | |||
5060 | serge | 1711 | static void wait_panel_power_cycle(struct intel_dp *intel_dp) |
2342 | Serge | 1712 | { |
1713 | DRM_DEBUG_KMS("Wait for panel power cycle\n"); |
||
5060 | serge | 1714 | |
1715 | /* When we disable the VDD override bit last we have to do the manual |
||
1716 | * wait. */ |
||
1717 | wait_remaining_ms_from_jiffies(intel_dp->last_power_cycle, |
||
1718 | intel_dp->panel_power_cycle_delay); |
||
1719 | |||
1720 | wait_panel_status(intel_dp, IDLE_CYCLE_MASK, IDLE_CYCLE_VALUE); |
||
2342 | Serge | 1721 | } |
1722 | |||
5060 | serge | 1723 | static void wait_backlight_on(struct intel_dp *intel_dp) |
1724 | { |
||
1725 | wait_remaining_ms_from_jiffies(intel_dp->last_power_on, |
||
1726 | intel_dp->backlight_on_delay); |
||
1727 | } |
||
2342 | Serge | 1728 | |
5060 | serge | 1729 | static void edp_wait_backlight_off(struct intel_dp *intel_dp) |
1730 | { |
||
1731 | wait_remaining_ms_from_jiffies(intel_dp->last_backlight_off, |
||
1732 | intel_dp->backlight_off_delay); |
||
1733 | } |
||
1734 | |||
2342 | Serge | 1735 | /* Read the current pp_control value, unlocking the register if it |
1736 | * is locked |
||
1737 | */ |
||
1738 | |||
3746 | Serge | 1739 | static u32 ironlake_get_pp_control(struct intel_dp *intel_dp) |
2342 | Serge | 1740 | { |
3746 | Serge | 1741 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
1742 | struct drm_i915_private *dev_priv = dev->dev_private; |
||
1743 | u32 control; |
||
2342 | Serge | 1744 | |
5354 | serge | 1745 | lockdep_assert_held(&dev_priv->pps_mutex); |
1746 | |||
4560 | Serge | 1747 | control = I915_READ(_pp_ctrl_reg(intel_dp)); |
6084 | serge | 1748 | if (!IS_BROXTON(dev)) { |
1749 | control &= ~PANEL_UNLOCK_MASK; |
||
1750 | control |= PANEL_UNLOCK_REGS; |
||
1751 | } |
||
2342 | Serge | 1752 | return control; |
1753 | } |
||
1754 | |||
5354 | serge | 1755 | /* |
1756 | * Must be paired with edp_panel_vdd_off(). |
||
1757 | * Must hold pps_mutex around the whole on/off sequence. |
||
1758 | * Can be nested with intel_edp_panel_vdd_{on,off}() calls. |
||
1759 | */ |
||
1760 | static bool edp_panel_vdd_on(struct intel_dp *intel_dp) |
||
2330 | Serge | 1761 | { |
3243 | Serge | 1762 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
5060 | serge | 1763 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
1764 | struct intel_encoder *intel_encoder = &intel_dig_port->base; |
||
2330 | Serge | 1765 | struct drm_i915_private *dev_priv = dev->dev_private; |
5060 | serge | 1766 | enum intel_display_power_domain power_domain; |
2330 | Serge | 1767 | u32 pp; |
3746 | Serge | 1768 | u32 pp_stat_reg, pp_ctrl_reg; |
5060 | serge | 1769 | bool need_to_disable = !intel_dp->want_panel_vdd; |
2327 | Serge | 1770 | |
5354 | serge | 1771 | lockdep_assert_held(&dev_priv->pps_mutex); |
1772 | |||
2342 | Serge | 1773 | if (!is_edp(intel_dp)) |
5060 | serge | 1774 | return false; |
2327 | Serge | 1775 | |
6084 | serge | 1776 | cancel_delayed_work(&intel_dp->panel_vdd_work); |
2342 | Serge | 1777 | intel_dp->want_panel_vdd = true; |
1778 | |||
5060 | serge | 1779 | if (edp_have_panel_vdd(intel_dp)) |
1780 | return need_to_disable; |
||
2342 | Serge | 1781 | |
6084 | serge | 1782 | power_domain = intel_display_port_aux_power_domain(intel_encoder); |
5060 | serge | 1783 | intel_display_power_get(dev_priv, power_domain); |
4560 | Serge | 1784 | |
5354 | serge | 1785 | DRM_DEBUG_KMS("Turning eDP port %c VDD on\n", |
1786 | port_name(intel_dig_port->port)); |
||
4560 | Serge | 1787 | |
5060 | serge | 1788 | if (!edp_have_panel_power(intel_dp)) |
1789 | wait_panel_power_cycle(intel_dp); |
||
2342 | Serge | 1790 | |
3746 | Serge | 1791 | pp = ironlake_get_pp_control(intel_dp); |
2330 | Serge | 1792 | pp |= EDP_FORCE_VDD; |
2342 | Serge | 1793 | |
4560 | Serge | 1794 | pp_stat_reg = _pp_stat_reg(intel_dp); |
1795 | pp_ctrl_reg = _pp_ctrl_reg(intel_dp); |
||
3746 | Serge | 1796 | |
1797 | I915_WRITE(pp_ctrl_reg, pp); |
||
1798 | POSTING_READ(pp_ctrl_reg); |
||
1799 | DRM_DEBUG_KMS("PP_STATUS: 0x%08x PP_CONTROL: 0x%08x\n", |
||
1800 | I915_READ(pp_stat_reg), I915_READ(pp_ctrl_reg)); |
||
2342 | Serge | 1801 | /* |
1802 | * If the panel wasn't on, delay before accessing aux channel |
||
1803 | */ |
||
5060 | serge | 1804 | if (!edp_have_panel_power(intel_dp)) { |
5354 | serge | 1805 | DRM_DEBUG_KMS("eDP port %c panel power wasn't enabled\n", |
1806 | port_name(intel_dig_port->port)); |
||
2342 | Serge | 1807 | msleep(intel_dp->panel_power_up_delay); |
1808 | } |
||
5060 | serge | 1809 | |
1810 | return need_to_disable; |
||
2330 | Serge | 1811 | } |
2327 | Serge | 1812 | |
5354 | serge | 1813 | /* |
1814 | * Must be paired with intel_edp_panel_vdd_off() or |
||
1815 | * intel_edp_panel_off(). |
||
1816 | * Nested calls to these functions are not allowed since |
||
1817 | * we drop the lock. Caller must use some higher level |
||
1818 | * locking to prevent nested calls from other threads. |
||
1819 | */ |
||
5060 | serge | 1820 | void intel_edp_panel_vdd_on(struct intel_dp *intel_dp) |
2330 | Serge | 1821 | { |
5354 | serge | 1822 | bool vdd; |
5060 | serge | 1823 | |
5354 | serge | 1824 | if (!is_edp(intel_dp)) |
1825 | return; |
||
1826 | |||
1827 | pps_lock(intel_dp); |
||
1828 | vdd = edp_panel_vdd_on(intel_dp); |
||
1829 | pps_unlock(intel_dp); |
||
1830 | |||
6084 | serge | 1831 | I915_STATE_WARN(!vdd, "eDP port %c VDD already requested on\n", |
5354 | serge | 1832 | port_name(dp_to_dig_port(intel_dp)->port)); |
5060 | serge | 1833 | } |
1834 | |||
1835 | static void edp_panel_vdd_off_sync(struct intel_dp *intel_dp) |
||
1836 | { |
||
3243 | Serge | 1837 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
2330 | Serge | 1838 | struct drm_i915_private *dev_priv = dev->dev_private; |
5354 | serge | 1839 | struct intel_digital_port *intel_dig_port = |
1840 | dp_to_dig_port(intel_dp); |
||
1841 | struct intel_encoder *intel_encoder = &intel_dig_port->base; |
||
1842 | enum intel_display_power_domain power_domain; |
||
2330 | Serge | 1843 | u32 pp; |
3746 | Serge | 1844 | u32 pp_stat_reg, pp_ctrl_reg; |
2327 | Serge | 1845 | |
5354 | serge | 1846 | lockdep_assert_held(&dev_priv->pps_mutex); |
3480 | Serge | 1847 | |
5354 | serge | 1848 | WARN_ON(intel_dp->want_panel_vdd); |
5060 | serge | 1849 | |
5354 | serge | 1850 | if (!edp_have_panel_vdd(intel_dp)) |
1851 | return; |
||
4560 | Serge | 1852 | |
5354 | serge | 1853 | DRM_DEBUG_KMS("Turning eDP port %c VDD off\n", |
1854 | port_name(intel_dig_port->port)); |
||
1855 | |||
6084 | serge | 1856 | pp = ironlake_get_pp_control(intel_dp); |
2330 | Serge | 1857 | pp &= ~EDP_FORCE_VDD; |
2327 | Serge | 1858 | |
6084 | serge | 1859 | pp_ctrl_reg = _pp_ctrl_reg(intel_dp); |
1860 | pp_stat_reg = _pp_stat_reg(intel_dp); |
||
3746 | Serge | 1861 | |
6084 | serge | 1862 | I915_WRITE(pp_ctrl_reg, pp); |
1863 | POSTING_READ(pp_ctrl_reg); |
||
3746 | Serge | 1864 | |
2330 | Serge | 1865 | /* Make sure sequencer is idle before allowing subsequent activity */ |
6084 | serge | 1866 | DRM_DEBUG_KMS("PP_STATUS: 0x%08x PP_CONTROL: 0x%08x\n", |
1867 | I915_READ(pp_stat_reg), I915_READ(pp_ctrl_reg)); |
||
4560 | Serge | 1868 | |
6084 | serge | 1869 | if ((pp & POWER_TARGET_ON) == 0) |
1870 | intel_dp->last_power_cycle = jiffies; |
||
4560 | Serge | 1871 | |
6084 | serge | 1872 | power_domain = intel_display_port_aux_power_domain(intel_encoder); |
1873 | intel_display_power_put(dev_priv, power_domain); |
||
2330 | Serge | 1874 | } |
2327 | Serge | 1875 | |
5060 | serge | 1876 | static void edp_panel_vdd_work(struct work_struct *__work) |
3243 | Serge | 1877 | { |
3482 | Serge | 1878 | struct intel_dp *intel_dp = container_of(to_delayed_work(__work), |
1879 | struct intel_dp, panel_vdd_work); |
||
1880 | |||
5354 | serge | 1881 | pps_lock(intel_dp); |
1882 | if (!intel_dp->want_panel_vdd) |
||
6084 | serge | 1883 | edp_panel_vdd_off_sync(intel_dp); |
5354 | serge | 1884 | pps_unlock(intel_dp); |
3243 | Serge | 1885 | } |
2342 | Serge | 1886 | |
5060 | serge | 1887 | static void edp_panel_vdd_schedule_off(struct intel_dp *intel_dp) |
2330 | Serge | 1888 | { |
5060 | serge | 1889 | unsigned long delay; |
1890 | |||
1891 | /* |
||
1892 | * Queue the timer to fire a long time from now (relative to the power |
||
1893 | * down delay) to keep the panel power up across a sequence of |
||
1894 | * operations. |
||
1895 | */ |
||
1896 | delay = msecs_to_jiffies(intel_dp->panel_power_cycle_delay * 5); |
||
6320 | serge | 1897 | schedule_delayed_work(&intel_dp->panel_vdd_work, delay); |
5060 | serge | 1898 | } |
1899 | |||
5354 | serge | 1900 | /* |
1901 | * Must be paired with edp_panel_vdd_on(). |
||
1902 | * Must hold pps_mutex around the whole on/off sequence. |
||
1903 | * Can be nested with intel_edp_panel_vdd_{on,off}() calls. |
||
1904 | */ |
||
5060 | serge | 1905 | static void edp_panel_vdd_off(struct intel_dp *intel_dp, bool sync) |
1906 | { |
||
5354 | serge | 1907 | struct drm_i915_private *dev_priv = |
1908 | intel_dp_to_dev(intel_dp)->dev_private; |
||
1909 | |||
1910 | lockdep_assert_held(&dev_priv->pps_mutex); |
||
1911 | |||
2342 | Serge | 1912 | if (!is_edp(intel_dp)) |
1913 | return; |
||
1914 | |||
6084 | serge | 1915 | I915_STATE_WARN(!intel_dp->want_panel_vdd, "eDP port %c VDD not forced on", |
5354 | serge | 1916 | port_name(dp_to_dig_port(intel_dp)->port)); |
2342 | Serge | 1917 | |
1918 | intel_dp->want_panel_vdd = false; |
||
1919 | |||
5060 | serge | 1920 | if (sync) |
1921 | edp_panel_vdd_off_sync(intel_dp); |
||
1922 | else |
||
1923 | edp_panel_vdd_schedule_off(intel_dp); |
||
2342 | Serge | 1924 | } |
1925 | |||
5354 | serge | 1926 | static void edp_panel_on(struct intel_dp *intel_dp) |
2342 | Serge | 1927 | { |
3243 | Serge | 1928 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
2330 | Serge | 1929 | struct drm_i915_private *dev_priv = dev->dev_private; |
2342 | Serge | 1930 | u32 pp; |
3746 | Serge | 1931 | u32 pp_ctrl_reg; |
2327 | Serge | 1932 | |
5354 | serge | 1933 | lockdep_assert_held(&dev_priv->pps_mutex); |
1934 | |||
2342 | Serge | 1935 | if (!is_edp(intel_dp)) |
1936 | return; |
||
2327 | Serge | 1937 | |
5354 | serge | 1938 | DRM_DEBUG_KMS("Turn eDP port %c panel power on\n", |
1939 | port_name(dp_to_dig_port(intel_dp)->port)); |
||
2327 | Serge | 1940 | |
5354 | serge | 1941 | if (WARN(edp_have_panel_power(intel_dp), |
1942 | "eDP port %c panel power already on\n", |
||
1943 | port_name(dp_to_dig_port(intel_dp)->port))) |
||
2342 | Serge | 1944 | return; |
1945 | |||
5060 | serge | 1946 | wait_panel_power_cycle(intel_dp); |
2342 | Serge | 1947 | |
4560 | Serge | 1948 | pp_ctrl_reg = _pp_ctrl_reg(intel_dp); |
3746 | Serge | 1949 | pp = ironlake_get_pp_control(intel_dp); |
2342 | Serge | 1950 | if (IS_GEN5(dev)) { |
6084 | serge | 1951 | /* ILK workaround: disable reset around power sequence */ |
1952 | pp &= ~PANEL_POWER_RESET; |
||
4560 | Serge | 1953 | I915_WRITE(pp_ctrl_reg, pp); |
1954 | POSTING_READ(pp_ctrl_reg); |
||
2342 | Serge | 1955 | } |
2327 | Serge | 1956 | |
2342 | Serge | 1957 | pp |= POWER_TARGET_ON; |
1958 | if (!IS_GEN5(dev)) |
||
1959 | pp |= PANEL_POWER_RESET; |
||
1960 | |||
3746 | Serge | 1961 | I915_WRITE(pp_ctrl_reg, pp); |
1962 | POSTING_READ(pp_ctrl_reg); |
||
1963 | |||
5060 | serge | 1964 | wait_panel_on(intel_dp); |
1965 | intel_dp->last_power_on = jiffies; |
||
2327 | Serge | 1966 | |
2342 | Serge | 1967 | if (IS_GEN5(dev)) { |
6084 | serge | 1968 | pp |= PANEL_POWER_RESET; /* restore panel reset bit */ |
4560 | Serge | 1969 | I915_WRITE(pp_ctrl_reg, pp); |
1970 | POSTING_READ(pp_ctrl_reg); |
||
2342 | Serge | 1971 | } |
2330 | Serge | 1972 | } |
2327 | Serge | 1973 | |
5354 | serge | 1974 | void intel_edp_panel_on(struct intel_dp *intel_dp) |
2330 | Serge | 1975 | { |
5354 | serge | 1976 | if (!is_edp(intel_dp)) |
1977 | return; |
||
1978 | |||
1979 | pps_lock(intel_dp); |
||
1980 | edp_panel_on(intel_dp); |
||
1981 | pps_unlock(intel_dp); |
||
1982 | } |
||
1983 | |||
1984 | |||
1985 | static void edp_panel_off(struct intel_dp *intel_dp) |
||
1986 | { |
||
5060 | serge | 1987 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
1988 | struct intel_encoder *intel_encoder = &intel_dig_port->base; |
||
3243 | Serge | 1989 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
2330 | Serge | 1990 | struct drm_i915_private *dev_priv = dev->dev_private; |
5060 | serge | 1991 | enum intel_display_power_domain power_domain; |
2342 | Serge | 1992 | u32 pp; |
3746 | Serge | 1993 | u32 pp_ctrl_reg; |
2327 | Serge | 1994 | |
5354 | serge | 1995 | lockdep_assert_held(&dev_priv->pps_mutex); |
1996 | |||
2342 | Serge | 1997 | if (!is_edp(intel_dp)) |
1998 | return; |
||
2327 | Serge | 1999 | |
5354 | serge | 2000 | DRM_DEBUG_KMS("Turn eDP port %c panel power off\n", |
2001 | port_name(dp_to_dig_port(intel_dp)->port)); |
||
2327 | Serge | 2002 | |
5354 | serge | 2003 | WARN(!intel_dp->want_panel_vdd, "Need eDP port %c VDD to turn off panel\n", |
2004 | port_name(dp_to_dig_port(intel_dp)->port)); |
||
5060 | serge | 2005 | |
3746 | Serge | 2006 | pp = ironlake_get_pp_control(intel_dp); |
3031 | serge | 2007 | /* We need to switch off panel power _and_ force vdd, for otherwise some |
2008 | * panels get very unhappy and cease to work. */ |
||
5060 | serge | 2009 | pp &= ~(POWER_TARGET_ON | PANEL_POWER_RESET | EDP_FORCE_VDD | |
2010 | EDP_BLC_ENABLE); |
||
2327 | Serge | 2011 | |
4560 | Serge | 2012 | pp_ctrl_reg = _pp_ctrl_reg(intel_dp); |
3746 | Serge | 2013 | |
5060 | serge | 2014 | intel_dp->want_panel_vdd = false; |
2015 | |||
3746 | Serge | 2016 | I915_WRITE(pp_ctrl_reg, pp); |
2017 | POSTING_READ(pp_ctrl_reg); |
||
2018 | |||
5060 | serge | 2019 | intel_dp->last_power_cycle = jiffies; |
2020 | wait_panel_off(intel_dp); |
||
2021 | |||
2022 | /* We got a reference when we enabled the VDD. */ |
||
6084 | serge | 2023 | power_domain = intel_display_port_aux_power_domain(intel_encoder); |
5060 | serge | 2024 | intel_display_power_put(dev_priv, power_domain); |
2330 | Serge | 2025 | } |
2327 | Serge | 2026 | |
5354 | serge | 2027 | void intel_edp_panel_off(struct intel_dp *intel_dp) |
2330 | Serge | 2028 | { |
5354 | serge | 2029 | if (!is_edp(intel_dp)) |
2030 | return; |
||
2031 | |||
2032 | pps_lock(intel_dp); |
||
2033 | edp_panel_off(intel_dp); |
||
2034 | pps_unlock(intel_dp); |
||
2035 | } |
||
2036 | |||
2037 | /* Enable backlight in the panel power control. */ |
||
2038 | static void _intel_edp_backlight_on(struct intel_dp *intel_dp) |
||
2039 | { |
||
3243 | Serge | 2040 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
2041 | struct drm_device *dev = intel_dig_port->base.base.dev; |
||
2330 | Serge | 2042 | struct drm_i915_private *dev_priv = dev->dev_private; |
2043 | u32 pp; |
||
3746 | Serge | 2044 | u32 pp_ctrl_reg; |
2327 | Serge | 2045 | |
2330 | Serge | 2046 | /* |
2047 | * If we enable the backlight right away following a panel power |
||
2048 | * on, we may see slight flicker as the panel syncs with the eDP |
||
2049 | * link. So delay a bit to make sure the image is solid before |
||
2050 | * allowing it to appear. |
||
2051 | */ |
||
5060 | serge | 2052 | wait_backlight_on(intel_dp); |
5354 | serge | 2053 | |
2054 | pps_lock(intel_dp); |
||
2055 | |||
3746 | Serge | 2056 | pp = ironlake_get_pp_control(intel_dp); |
2330 | Serge | 2057 | pp |= EDP_BLC_ENABLE; |
3243 | Serge | 2058 | |
4560 | Serge | 2059 | pp_ctrl_reg = _pp_ctrl_reg(intel_dp); |
3746 | Serge | 2060 | |
2061 | I915_WRITE(pp_ctrl_reg, pp); |
||
2062 | POSTING_READ(pp_ctrl_reg); |
||
5354 | serge | 2063 | |
2064 | pps_unlock(intel_dp); |
||
2330 | Serge | 2065 | } |
2327 | Serge | 2066 | |
5354 | serge | 2067 | /* Enable backlight PWM and backlight PP control. */ |
2068 | void intel_edp_backlight_on(struct intel_dp *intel_dp) |
||
2330 | Serge | 2069 | { |
5354 | serge | 2070 | if (!is_edp(intel_dp)) |
2071 | return; |
||
2072 | |||
2073 | DRM_DEBUG_KMS("\n"); |
||
2074 | |||
2075 | intel_panel_enable_backlight(intel_dp->attached_connector); |
||
2076 | _intel_edp_backlight_on(intel_dp); |
||
2077 | } |
||
2078 | |||
2079 | /* Disable backlight in the panel power control. */ |
||
2080 | static void _intel_edp_backlight_off(struct intel_dp *intel_dp) |
||
2081 | { |
||
3243 | Serge | 2082 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
2330 | Serge | 2083 | struct drm_i915_private *dev_priv = dev->dev_private; |
2084 | u32 pp; |
||
3746 | Serge | 2085 | u32 pp_ctrl_reg; |
2327 | Serge | 2086 | |
2342 | Serge | 2087 | if (!is_edp(intel_dp)) |
2088 | return; |
||
2089 | |||
5354 | serge | 2090 | pps_lock(intel_dp); |
2091 | |||
3746 | Serge | 2092 | pp = ironlake_get_pp_control(intel_dp); |
2330 | Serge | 2093 | pp &= ~EDP_BLC_ENABLE; |
3746 | Serge | 2094 | |
4560 | Serge | 2095 | pp_ctrl_reg = _pp_ctrl_reg(intel_dp); |
3746 | Serge | 2096 | |
2097 | I915_WRITE(pp_ctrl_reg, pp); |
||
2098 | POSTING_READ(pp_ctrl_reg); |
||
5354 | serge | 2099 | |
2100 | pps_unlock(intel_dp); |
||
2101 | |||
5060 | serge | 2102 | intel_dp->last_backlight_off = jiffies; |
2103 | edp_wait_backlight_off(intel_dp); |
||
5354 | serge | 2104 | } |
5060 | serge | 2105 | |
5354 | serge | 2106 | /* Disable backlight PP control and backlight PWM. */ |
2107 | void intel_edp_backlight_off(struct intel_dp *intel_dp) |
||
2108 | { |
||
2109 | if (!is_edp(intel_dp)) |
||
2110 | return; |
||
2111 | |||
2112 | DRM_DEBUG_KMS("\n"); |
||
2113 | |||
2114 | _intel_edp_backlight_off(intel_dp); |
||
5060 | serge | 2115 | intel_panel_disable_backlight(intel_dp->attached_connector); |
2330 | Serge | 2116 | } |
2327 | Serge | 2117 | |
5354 | serge | 2118 | /* |
2119 | * Hook for controlling the panel power control backlight through the bl_power |
||
2120 | * sysfs attribute. Take care to handle multiple calls. |
||
2121 | */ |
||
2122 | static void intel_edp_backlight_power(struct intel_connector *connector, |
||
2123 | bool enable) |
||
2124 | { |
||
2125 | struct intel_dp *intel_dp = intel_attached_dp(&connector->base); |
||
2126 | bool is_enabled; |
||
2127 | |||
2128 | pps_lock(intel_dp); |
||
2129 | is_enabled = ironlake_get_pp_control(intel_dp) & EDP_BLC_ENABLE; |
||
2130 | pps_unlock(intel_dp); |
||
2131 | |||
2132 | if (is_enabled == enable) |
||
2133 | return; |
||
2134 | |||
2135 | DRM_DEBUG_KMS("panel power control backlight %s\n", |
||
2136 | enable ? "enable" : "disable"); |
||
2137 | |||
2138 | if (enable) |
||
2139 | _intel_edp_backlight_on(intel_dp); |
||
2140 | else |
||
2141 | _intel_edp_backlight_off(intel_dp); |
||
2142 | } |
||
2143 | |||
3031 | serge | 2144 | static void ironlake_edp_pll_on(struct intel_dp *intel_dp) |
2330 | Serge | 2145 | { |
3243 | Serge | 2146 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
2147 | struct drm_crtc *crtc = intel_dig_port->base.base.crtc; |
||
2148 | struct drm_device *dev = crtc->dev; |
||
2330 | Serge | 2149 | struct drm_i915_private *dev_priv = dev->dev_private; |
2150 | u32 dpa_ctl; |
||
2327 | Serge | 2151 | |
3031 | serge | 2152 | assert_pipe_disabled(dev_priv, |
2153 | to_intel_crtc(crtc)->pipe); |
||
2154 | |||
2330 | Serge | 2155 | DRM_DEBUG_KMS("\n"); |
2156 | dpa_ctl = I915_READ(DP_A); |
||
3031 | serge | 2157 | WARN(dpa_ctl & DP_PLL_ENABLE, "dp pll on, should be off\n"); |
2158 | WARN(dpa_ctl & DP_PORT_EN, "dp port still on, should be off\n"); |
||
2159 | |||
2160 | /* We don't adjust intel_dp->DP while tearing down the link, to |
||
2161 | * facilitate link retraining (e.g. after hotplug). Hence clear all |
||
2162 | * enable bits here to ensure that we don't enable too much. */ |
||
2163 | intel_dp->DP &= ~(DP_PORT_EN | DP_AUDIO_OUTPUT_ENABLE); |
||
2164 | intel_dp->DP |= DP_PLL_ENABLE; |
||
2165 | I915_WRITE(DP_A, intel_dp->DP); |
||
2330 | Serge | 2166 | POSTING_READ(DP_A); |
2167 | udelay(200); |
||
2168 | } |
||
2327 | Serge | 2169 | |
3031 | serge | 2170 | static void ironlake_edp_pll_off(struct intel_dp *intel_dp) |
2330 | Serge | 2171 | { |
3243 | Serge | 2172 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
2173 | struct drm_crtc *crtc = intel_dig_port->base.base.crtc; |
||
2174 | struct drm_device *dev = crtc->dev; |
||
2330 | Serge | 2175 | struct drm_i915_private *dev_priv = dev->dev_private; |
2176 | u32 dpa_ctl; |
||
2327 | Serge | 2177 | |
3031 | serge | 2178 | assert_pipe_disabled(dev_priv, |
2179 | to_intel_crtc(crtc)->pipe); |
||
2180 | |||
2330 | Serge | 2181 | dpa_ctl = I915_READ(DP_A); |
3031 | serge | 2182 | WARN((dpa_ctl & DP_PLL_ENABLE) == 0, |
2183 | "dp pll off, should be on\n"); |
||
2184 | WARN(dpa_ctl & DP_PORT_EN, "dp port still on, should be off\n"); |
||
2185 | |||
2186 | /* We can't rely on the value tracked for the DP register in |
||
2187 | * intel_dp->DP because link_down must not change that (otherwise link |
||
2188 | * re-training will fail. */ |
||
2330 | Serge | 2189 | dpa_ctl &= ~DP_PLL_ENABLE; |
2190 | I915_WRITE(DP_A, dpa_ctl); |
||
2191 | POSTING_READ(DP_A); |
||
2192 | udelay(200); |
||
2193 | } |
||
2327 | Serge | 2194 | |
2330 | Serge | 2195 | /* If the sink supports it, try to set the power state appropriately */ |
3243 | Serge | 2196 | void intel_dp_sink_dpms(struct intel_dp *intel_dp, int mode) |
2330 | Serge | 2197 | { |
2198 | int ret, i; |
||
2327 | Serge | 2199 | |
2330 | Serge | 2200 | /* Should have a valid DPCD by this point */ |
2201 | if (intel_dp->dpcd[DP_DPCD_REV] < 0x11) |
||
2202 | return; |
||
2327 | Serge | 2203 | |
2330 | Serge | 2204 | if (mode != DRM_MODE_DPMS_ON) { |
5060 | serge | 2205 | ret = drm_dp_dpcd_writeb(&intel_dp->aux, DP_SET_POWER, |
6084 | serge | 2206 | DP_SET_POWER_D3); |
2330 | Serge | 2207 | } else { |
2208 | /* |
||
2209 | * When turning on, we need to retry for 1ms to give the sink |
||
2210 | * time to wake up. |
||
2211 | */ |
||
2212 | for (i = 0; i < 3; i++) { |
||
5060 | serge | 2213 | ret = drm_dp_dpcd_writeb(&intel_dp->aux, DP_SET_POWER, |
6084 | serge | 2214 | DP_SET_POWER_D0); |
2330 | Serge | 2215 | if (ret == 1) |
2216 | break; |
||
2217 | msleep(1); |
||
2218 | } |
||
2219 | } |
||
5354 | serge | 2220 | |
2221 | if (ret != 1) |
||
2222 | DRM_DEBUG_KMS("failed to %s sink power state\n", |
||
2223 | mode == DRM_MODE_DPMS_ON ? "enable" : "disable"); |
||
2330 | Serge | 2224 | } |
2327 | Serge | 2225 | |
3031 | serge | 2226 | static bool intel_dp_get_hw_state(struct intel_encoder *encoder, |
2227 | enum pipe *pipe) |
||
2330 | Serge | 2228 | { |
3031 | serge | 2229 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
4104 | Serge | 2230 | enum port port = dp_to_dig_port(intel_dp)->port; |
3031 | serge | 2231 | struct drm_device *dev = encoder->base.dev; |
2232 | struct drm_i915_private *dev_priv = dev->dev_private; |
||
5060 | serge | 2233 | enum intel_display_power_domain power_domain; |
2234 | u32 tmp; |
||
2327 | Serge | 2235 | |
5060 | serge | 2236 | power_domain = intel_display_port_power_domain(encoder); |
5354 | serge | 2237 | if (!intel_display_power_is_enabled(dev_priv, power_domain)) |
5060 | serge | 2238 | return false; |
2239 | |||
2240 | tmp = I915_READ(intel_dp->output_reg); |
||
2241 | |||
3031 | serge | 2242 | if (!(tmp & DP_PORT_EN)) |
2243 | return false; |
||
2342 | Serge | 2244 | |
6084 | serge | 2245 | if (IS_GEN7(dev) && port == PORT_A) { |
3031 | serge | 2246 | *pipe = PORT_TO_PIPE_CPT(tmp); |
6084 | serge | 2247 | } else if (HAS_PCH_CPT(dev) && port != PORT_A) { |
2248 | enum pipe p; |
||
2327 | Serge | 2249 | |
6084 | serge | 2250 | for_each_pipe(dev_priv, p) { |
2251 | u32 trans_dp = I915_READ(TRANS_DP_CTL(p)); |
||
2252 | if (TRANS_DP_PIPE_TO_PORT(trans_dp) == port) { |
||
2253 | *pipe = p; |
||
3031 | serge | 2254 | return true; |
2255 | } |
||
2256 | } |
||
3243 | Serge | 2257 | |
2258 | DRM_DEBUG_KMS("No pipe for dp port 0x%x found\n", |
||
2259 | intel_dp->output_reg); |
||
6084 | serge | 2260 | } else if (IS_CHERRYVIEW(dev)) { |
2261 | *pipe = DP_PORT_TO_PIPE_CHV(tmp); |
||
2262 | } else { |
||
2263 | *pipe = PORT_TO_PIPE(tmp); |
||
3031 | serge | 2264 | } |
2265 | |||
2266 | return true; |
||
2330 | Serge | 2267 | } |
2327 | Serge | 2268 | |
4104 | Serge | 2269 | static void intel_dp_get_config(struct intel_encoder *encoder, |
6084 | serge | 2270 | struct intel_crtc_state *pipe_config) |
4104 | Serge | 2271 | { |
2272 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
||
2273 | u32 tmp, flags = 0; |
||
2274 | struct drm_device *dev = encoder->base.dev; |
||
2275 | struct drm_i915_private *dev_priv = dev->dev_private; |
||
2276 | enum port port = dp_to_dig_port(intel_dp)->port; |
||
2277 | struct intel_crtc *crtc = to_intel_crtc(encoder->base.crtc); |
||
4560 | Serge | 2278 | int dotclock; |
4104 | Serge | 2279 | |
5060 | serge | 2280 | tmp = I915_READ(intel_dp->output_reg); |
2281 | |||
6084 | serge | 2282 | pipe_config->has_audio = tmp & DP_AUDIO_OUTPUT_ENABLE && port != PORT_A; |
2283 | |||
2284 | if (HAS_PCH_CPT(dev) && port != PORT_A) { |
||
2285 | u32 trans_dp = I915_READ(TRANS_DP_CTL(crtc->pipe)); |
||
2286 | |||
2287 | if (trans_dp & TRANS_DP_HSYNC_ACTIVE_HIGH) |
||
4104 | Serge | 2288 | flags |= DRM_MODE_FLAG_PHSYNC; |
2289 | else |
||
2290 | flags |= DRM_MODE_FLAG_NHSYNC; |
||
2291 | |||
6084 | serge | 2292 | if (trans_dp & TRANS_DP_VSYNC_ACTIVE_HIGH) |
4104 | Serge | 2293 | flags |= DRM_MODE_FLAG_PVSYNC; |
2294 | else |
||
2295 | flags |= DRM_MODE_FLAG_NVSYNC; |
||
2296 | } else { |
||
6084 | serge | 2297 | if (tmp & DP_SYNC_HS_HIGH) |
4104 | Serge | 2298 | flags |= DRM_MODE_FLAG_PHSYNC; |
2299 | else |
||
2300 | flags |= DRM_MODE_FLAG_NHSYNC; |
||
2301 | |||
6084 | serge | 2302 | if (tmp & DP_SYNC_VS_HIGH) |
4104 | Serge | 2303 | flags |= DRM_MODE_FLAG_PVSYNC; |
2304 | else |
||
2305 | flags |= DRM_MODE_FLAG_NVSYNC; |
||
2306 | } |
||
2307 | |||
6084 | serge | 2308 | pipe_config->base.adjusted_mode.flags |= flags; |
4104 | Serge | 2309 | |
5139 | serge | 2310 | if (!HAS_PCH_SPLIT(dev) && !IS_VALLEYVIEW(dev) && |
2311 | tmp & DP_COLOR_RANGE_16_235) |
||
2312 | pipe_config->limited_color_range = true; |
||
2313 | |||
4560 | Serge | 2314 | pipe_config->has_dp_encoder = true; |
2315 | |||
6084 | serge | 2316 | pipe_config->lane_count = |
2317 | ((tmp & DP_PORT_WIDTH_MASK) >> DP_PORT_WIDTH_SHIFT) + 1; |
||
2318 | |||
4560 | Serge | 2319 | intel_dp_get_m_n(crtc, pipe_config); |
2320 | |||
2321 | if (port == PORT_A) { |
||
4104 | Serge | 2322 | if ((I915_READ(DP_A) & DP_PLL_FREQ_MASK) == DP_PLL_FREQ_160MHZ) |
2323 | pipe_config->port_clock = 162000; |
||
2324 | else |
||
2325 | pipe_config->port_clock = 270000; |
||
2326 | } |
||
4280 | Serge | 2327 | |
4560 | Serge | 2328 | dotclock = intel_dotclock_calculate(pipe_config->port_clock, |
2329 | &pipe_config->dp_m_n); |
||
2330 | |||
2331 | if (HAS_PCH_SPLIT(dev_priv->dev) && port != PORT_A) |
||
2332 | ironlake_check_encoder_dotclock(pipe_config, dotclock); |
||
2333 | |||
6084 | serge | 2334 | pipe_config->base.adjusted_mode.crtc_clock = dotclock; |
4560 | Serge | 2335 | |
4280 | Serge | 2336 | if (is_edp(intel_dp) && dev_priv->vbt.edp_bpp && |
2337 | pipe_config->pipe_bpp > dev_priv->vbt.edp_bpp) { |
||
2338 | /* |
||
2339 | * This is a big fat ugly hack. |
||
2340 | * |
||
2341 | * Some machines in UEFI boot mode provide us a VBT that has 18 |
||
2342 | * bpp and 1.62 GHz link bandwidth for eDP, which for reasons |
||
2343 | * unknown we fail to light up. Yet the same BIOS boots up with |
||
2344 | * 24 bpp and 2.7 GHz link. Use the same bpp as the BIOS uses as |
||
2345 | * max, not what it tells us to use. |
||
2346 | * |
||
2347 | * Note: This will still be broken if the eDP panel is not lit |
||
2348 | * up by the BIOS, and thus we can't get the mode at module |
||
2349 | * load. |
||
2350 | */ |
||
2351 | DRM_DEBUG_KMS("pipe has %d bpp for eDP panel, overriding BIOS-provided max %d bpp\n", |
||
2352 | pipe_config->pipe_bpp, dev_priv->vbt.edp_bpp); |
||
2353 | dev_priv->vbt.edp_bpp = pipe_config->pipe_bpp; |
||
2354 | } |
||
4104 | Serge | 2355 | } |
2356 | |||
3031 | serge | 2357 | static void intel_disable_dp(struct intel_encoder *encoder) |
2330 | Serge | 2358 | { |
3031 | serge | 2359 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
4104 | Serge | 2360 | struct drm_device *dev = encoder->base.dev; |
5354 | serge | 2361 | struct intel_crtc *crtc = to_intel_crtc(encoder->base.crtc); |
2327 | Serge | 2362 | |
6084 | serge | 2363 | if (crtc->config->has_audio) |
5354 | serge | 2364 | intel_audio_codec_disable(encoder); |
2365 | |||
6084 | serge | 2366 | if (HAS_PSR(dev) && !HAS_DDI(dev)) |
2367 | intel_psr_disable(intel_dp); |
||
2368 | |||
3031 | serge | 2369 | /* Make sure the panel is off before trying to change the mode. But also |
2370 | * ensure that we have vdd while we switch off the panel. */ |
||
5060 | serge | 2371 | intel_edp_panel_vdd_on(intel_dp); |
2372 | intel_edp_backlight_off(intel_dp); |
||
4560 | Serge | 2373 | intel_dp_sink_dpms(intel_dp, DRM_MODE_DPMS_OFF); |
5060 | serge | 2374 | intel_edp_panel_off(intel_dp); |
2330 | Serge | 2375 | |
5354 | serge | 2376 | /* disable the port before the pipe on g4x */ |
2377 | if (INTEL_INFO(dev)->gen < 5) |
||
3031 | serge | 2378 | intel_dp_link_down(intel_dp); |
2379 | } |
||
2330 | Serge | 2380 | |
5354 | serge | 2381 | static void ilk_post_disable_dp(struct intel_encoder *encoder) |
3031 | serge | 2382 | { |
2383 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
||
4104 | Serge | 2384 | enum port port = dp_to_dig_port(intel_dp)->port; |
5060 | serge | 2385 | |
2386 | intel_dp_link_down(intel_dp); |
||
5354 | serge | 2387 | if (port == PORT_A) |
6084 | serge | 2388 | ironlake_edp_pll_off(intel_dp); |
5060 | serge | 2389 | } |
2390 | |||
2391 | static void vlv_post_disable_dp(struct intel_encoder *encoder) |
||
2392 | { |
||
2393 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
||
2394 | |||
2395 | intel_dp_link_down(intel_dp); |
||
2396 | } |
||
2397 | |||
6084 | serge | 2398 | static void chv_data_lane_soft_reset(struct intel_encoder *encoder, |
2399 | bool reset) |
||
5060 | serge | 2400 | { |
6084 | serge | 2401 | struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); |
2402 | enum dpio_channel ch = vlv_dport_to_channel(enc_to_dig_port(&encoder->base)); |
||
2403 | struct intel_crtc *crtc = to_intel_crtc(encoder->base.crtc); |
||
2404 | enum pipe pipe = crtc->pipe; |
||
2405 | uint32_t val; |
||
3031 | serge | 2406 | |
6084 | serge | 2407 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW0(ch)); |
2408 | if (reset) |
||
2409 | val &= ~(DPIO_PCS_TX_LANE2_RESET | DPIO_PCS_TX_LANE1_RESET); |
||
2410 | else |
||
2411 | val |= DPIO_PCS_TX_LANE2_RESET | DPIO_PCS_TX_LANE1_RESET; |
||
2412 | vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW0(ch), val); |
||
5060 | serge | 2413 | |
6084 | serge | 2414 | if (crtc->config->lane_count > 2) { |
2415 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW0(ch)); |
||
2416 | if (reset) |
||
2417 | val &= ~(DPIO_PCS_TX_LANE2_RESET | DPIO_PCS_TX_LANE1_RESET); |
||
2418 | else |
||
2419 | val |= DPIO_PCS_TX_LANE2_RESET | DPIO_PCS_TX_LANE1_RESET; |
||
2420 | vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW0(ch), val); |
||
2421 | } |
||
5060 | serge | 2422 | |
2423 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW1(ch)); |
||
2424 | val |= CHV_PCS_REQ_SOFTRESET_EN; |
||
6084 | serge | 2425 | if (reset) |
2426 | val &= ~DPIO_PCS_CLK_SOFT_RESET; |
||
2427 | else |
||
2428 | val |= DPIO_PCS_CLK_SOFT_RESET; |
||
5060 | serge | 2429 | vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW1(ch), val); |
2430 | |||
6084 | serge | 2431 | if (crtc->config->lane_count > 2) { |
2432 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW1(ch)); |
||
2433 | val |= CHV_PCS_REQ_SOFTRESET_EN; |
||
2434 | if (reset) |
||
2435 | val &= ~DPIO_PCS_CLK_SOFT_RESET; |
||
2436 | else |
||
2437 | val |= DPIO_PCS_CLK_SOFT_RESET; |
||
2438 | vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW1(ch), val); |
||
2439 | } |
||
2440 | } |
||
5060 | serge | 2441 | |
6084 | serge | 2442 | static void chv_post_disable_dp(struct intel_encoder *encoder) |
2443 | { |
||
2444 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
||
2445 | struct drm_device *dev = encoder->base.dev; |
||
2446 | struct drm_i915_private *dev_priv = dev->dev_private; |
||
5060 | serge | 2447 | |
6084 | serge | 2448 | intel_dp_link_down(intel_dp); |
5060 | serge | 2449 | |
6084 | serge | 2450 | mutex_lock(&dev_priv->sb_lock); |
2451 | |||
2452 | /* Assert data lane reset */ |
||
2453 | chv_data_lane_soft_reset(encoder, true); |
||
2454 | |||
2455 | mutex_unlock(&dev_priv->sb_lock); |
||
2330 | Serge | 2456 | } |
2457 | |||
5354 | serge | 2458 | static void |
2459 | _intel_dp_set_link_train(struct intel_dp *intel_dp, |
||
2460 | uint32_t *DP, |
||
2461 | uint8_t dp_train_pat) |
||
2462 | { |
||
2463 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
||
2464 | struct drm_device *dev = intel_dig_port->base.base.dev; |
||
2465 | struct drm_i915_private *dev_priv = dev->dev_private; |
||
2466 | enum port port = intel_dig_port->port; |
||
2467 | |||
2468 | if (HAS_DDI(dev)) { |
||
2469 | uint32_t temp = I915_READ(DP_TP_CTL(port)); |
||
2470 | |||
2471 | if (dp_train_pat & DP_LINK_SCRAMBLING_DISABLE) |
||
2472 | temp |= DP_TP_CTL_SCRAMBLE_DISABLE; |
||
2473 | else |
||
2474 | temp &= ~DP_TP_CTL_SCRAMBLE_DISABLE; |
||
2475 | |||
2476 | temp &= ~DP_TP_CTL_LINK_TRAIN_MASK; |
||
2477 | switch (dp_train_pat & DP_TRAINING_PATTERN_MASK) { |
||
2478 | case DP_TRAINING_PATTERN_DISABLE: |
||
2479 | temp |= DP_TP_CTL_LINK_TRAIN_NORMAL; |
||
2480 | |||
2481 | break; |
||
2482 | case DP_TRAINING_PATTERN_1: |
||
2483 | temp |= DP_TP_CTL_LINK_TRAIN_PAT1; |
||
2484 | break; |
||
2485 | case DP_TRAINING_PATTERN_2: |
||
2486 | temp |= DP_TP_CTL_LINK_TRAIN_PAT2; |
||
2487 | break; |
||
2488 | case DP_TRAINING_PATTERN_3: |
||
2489 | temp |= DP_TP_CTL_LINK_TRAIN_PAT3; |
||
2490 | break; |
||
2491 | } |
||
2492 | I915_WRITE(DP_TP_CTL(port), temp); |
||
2493 | |||
6084 | serge | 2494 | } else if ((IS_GEN7(dev) && port == PORT_A) || |
2495 | (HAS_PCH_CPT(dev) && port != PORT_A)) { |
||
5354 | serge | 2496 | *DP &= ~DP_LINK_TRAIN_MASK_CPT; |
2497 | |||
2498 | switch (dp_train_pat & DP_TRAINING_PATTERN_MASK) { |
||
2499 | case DP_TRAINING_PATTERN_DISABLE: |
||
2500 | *DP |= DP_LINK_TRAIN_OFF_CPT; |
||
2501 | break; |
||
2502 | case DP_TRAINING_PATTERN_1: |
||
2503 | *DP |= DP_LINK_TRAIN_PAT_1_CPT; |
||
2504 | break; |
||
2505 | case DP_TRAINING_PATTERN_2: |
||
2506 | *DP |= DP_LINK_TRAIN_PAT_2_CPT; |
||
2507 | break; |
||
2508 | case DP_TRAINING_PATTERN_3: |
||
2509 | DRM_ERROR("DP training pattern 3 not supported\n"); |
||
2510 | *DP |= DP_LINK_TRAIN_PAT_2_CPT; |
||
2511 | break; |
||
2512 | } |
||
2513 | |||
2514 | } else { |
||
2515 | if (IS_CHERRYVIEW(dev)) |
||
2516 | *DP &= ~DP_LINK_TRAIN_MASK_CHV; |
||
2517 | else |
||
2518 | *DP &= ~DP_LINK_TRAIN_MASK; |
||
2519 | |||
2520 | switch (dp_train_pat & DP_TRAINING_PATTERN_MASK) { |
||
2521 | case DP_TRAINING_PATTERN_DISABLE: |
||
2522 | *DP |= DP_LINK_TRAIN_OFF; |
||
2523 | break; |
||
2524 | case DP_TRAINING_PATTERN_1: |
||
2525 | *DP |= DP_LINK_TRAIN_PAT_1; |
||
2526 | break; |
||
2527 | case DP_TRAINING_PATTERN_2: |
||
2528 | *DP |= DP_LINK_TRAIN_PAT_2; |
||
2529 | break; |
||
2530 | case DP_TRAINING_PATTERN_3: |
||
2531 | if (IS_CHERRYVIEW(dev)) { |
||
2532 | *DP |= DP_LINK_TRAIN_PAT_3_CHV; |
||
2533 | } else { |
||
2534 | DRM_ERROR("DP training pattern 3 not supported\n"); |
||
2535 | *DP |= DP_LINK_TRAIN_PAT_2; |
||
2536 | } |
||
2537 | break; |
||
2538 | } |
||
2539 | } |
||
2540 | } |
||
2541 | |||
2542 | static void intel_dp_enable_port(struct intel_dp *intel_dp) |
||
2543 | { |
||
2544 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
||
2545 | struct drm_i915_private *dev_priv = dev->dev_private; |
||
2546 | |||
2547 | /* enable with pattern 1 (as per spec) */ |
||
2548 | _intel_dp_set_link_train(intel_dp, &intel_dp->DP, |
||
2549 | DP_TRAINING_PATTERN_1); |
||
2550 | |||
2551 | I915_WRITE(intel_dp->output_reg, intel_dp->DP); |
||
2552 | POSTING_READ(intel_dp->output_reg); |
||
2553 | |||
2554 | /* |
||
2555 | * Magic for VLV/CHV. We _must_ first set up the register |
||
2556 | * without actually enabling the port, and then do another |
||
2557 | * write to enable the port. Otherwise link training will |
||
2558 | * fail when the power sequencer is freshly used for this port. |
||
2559 | */ |
||
2560 | intel_dp->DP |= DP_PORT_EN; |
||
2561 | |||
2562 | I915_WRITE(intel_dp->output_reg, intel_dp->DP); |
||
2563 | POSTING_READ(intel_dp->output_reg); |
||
2564 | } |
||
2565 | |||
3031 | serge | 2566 | static void intel_enable_dp(struct intel_encoder *encoder) |
2330 | Serge | 2567 | { |
3031 | serge | 2568 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
2569 | struct drm_device *dev = encoder->base.dev; |
||
2330 | Serge | 2570 | struct drm_i915_private *dev_priv = dev->dev_private; |
5354 | serge | 2571 | struct intel_crtc *crtc = to_intel_crtc(encoder->base.crtc); |
2330 | Serge | 2572 | uint32_t dp_reg = I915_READ(intel_dp->output_reg); |
2573 | |||
3031 | serge | 2574 | if (WARN_ON(dp_reg & DP_PORT_EN)) |
2575 | return; |
||
2342 | Serge | 2576 | |
5354 | serge | 2577 | pps_lock(intel_dp); |
2578 | |||
2579 | if (IS_VALLEYVIEW(dev)) |
||
2580 | vlv_init_panel_power_sequencer(intel_dp); |
||
2581 | |||
2582 | intel_dp_enable_port(intel_dp); |
||
2583 | |||
2584 | edp_panel_vdd_on(intel_dp); |
||
2585 | edp_panel_on(intel_dp); |
||
2586 | edp_panel_vdd_off(intel_dp, true); |
||
2587 | |||
2588 | pps_unlock(intel_dp); |
||
2589 | |||
6084 | serge | 2590 | if (IS_VALLEYVIEW(dev)) { |
2591 | unsigned int lane_mask = 0x0; |
||
5354 | serge | 2592 | |
6084 | serge | 2593 | if (IS_CHERRYVIEW(dev)) |
2594 | lane_mask = intel_dp_unused_lane_mask(crtc->config->lane_count); |
||
2595 | |||
2596 | vlv_wait_port_ready(dev_priv, dp_to_dig_port(intel_dp), |
||
2597 | lane_mask); |
||
2598 | } |
||
2599 | |||
3031 | serge | 2600 | intel_dp_sink_dpms(intel_dp, DRM_MODE_DPMS_ON); |
6084 | serge | 2601 | intel_dp_start_link_train(intel_dp); |
3746 | Serge | 2602 | intel_dp_stop_link_train(intel_dp); |
5354 | serge | 2603 | |
6084 | serge | 2604 | if (crtc->config->has_audio) { |
5354 | serge | 2605 | DRM_DEBUG_DRIVER("Enabling DP audio on pipe %c\n", |
2606 | pipe_name(crtc->pipe)); |
||
2607 | intel_audio_codec_enable(encoder); |
||
2608 | } |
||
4560 | Serge | 2609 | } |
2610 | |||
2611 | static void g4x_enable_dp(struct intel_encoder *encoder) |
||
2612 | { |
||
2613 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
||
2614 | |||
2615 | intel_enable_dp(encoder); |
||
5060 | serge | 2616 | intel_edp_backlight_on(intel_dp); |
2330 | Serge | 2617 | } |
2618 | |||
4104 | Serge | 2619 | static void vlv_enable_dp(struct intel_encoder *encoder) |
2620 | { |
||
4560 | Serge | 2621 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
2622 | |||
5060 | serge | 2623 | intel_edp_backlight_on(intel_dp); |
6084 | serge | 2624 | intel_psr_enable(intel_dp); |
4104 | Serge | 2625 | } |
2626 | |||
4560 | Serge | 2627 | static void g4x_pre_enable_dp(struct intel_encoder *encoder) |
3031 | serge | 2628 | { |
2629 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
||
4104 | Serge | 2630 | struct intel_digital_port *dport = dp_to_dig_port(intel_dp); |
3031 | serge | 2631 | |
5060 | serge | 2632 | intel_dp_prepare(encoder); |
2633 | |||
2634 | /* Only ilk+ has port A */ |
||
2635 | if (dport->port == PORT_A) { |
||
2636 | ironlake_set_pll_cpu_edp(intel_dp); |
||
3031 | serge | 2637 | ironlake_edp_pll_on(intel_dp); |
5060 | serge | 2638 | } |
3031 | serge | 2639 | } |
2640 | |||
5354 | serge | 2641 | static void vlv_detach_power_sequencer(struct intel_dp *intel_dp) |
2642 | { |
||
2643 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
||
2644 | struct drm_i915_private *dev_priv = intel_dig_port->base.base.dev->dev_private; |
||
2645 | enum pipe pipe = intel_dp->pps_pipe; |
||
2646 | int pp_on_reg = VLV_PIPE_PP_ON_DELAYS(pipe); |
||
2647 | |||
2648 | edp_panel_vdd_off_sync(intel_dp); |
||
2649 | |||
2650 | /* |
||
2651 | * VLV seems to get confused when multiple power seqeuencers |
||
2652 | * have the same port selected (even if only one has power/vdd |
||
2653 | * enabled). The failure manifests as vlv_wait_port_ready() failing |
||
2654 | * CHV on the other hand doesn't seem to mind having the same port |
||
2655 | * selected in multiple power seqeuencers, but let's clear the |
||
2656 | * port select always when logically disconnecting a power sequencer |
||
2657 | * from a port. |
||
2658 | */ |
||
2659 | DRM_DEBUG_KMS("detaching pipe %c power sequencer from port %c\n", |
||
2660 | pipe_name(pipe), port_name(intel_dig_port->port)); |
||
2661 | I915_WRITE(pp_on_reg, 0); |
||
2662 | POSTING_READ(pp_on_reg); |
||
2663 | |||
2664 | intel_dp->pps_pipe = INVALID_PIPE; |
||
2665 | } |
||
2666 | |||
2667 | static void vlv_steal_power_sequencer(struct drm_device *dev, |
||
2668 | enum pipe pipe) |
||
2669 | { |
||
2670 | struct drm_i915_private *dev_priv = dev->dev_private; |
||
2671 | struct intel_encoder *encoder; |
||
2672 | |||
2673 | lockdep_assert_held(&dev_priv->pps_mutex); |
||
2674 | |||
2675 | if (WARN_ON(pipe != PIPE_A && pipe != PIPE_B)) |
||
2676 | return; |
||
2677 | |||
2678 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, |
||
2679 | base.head) { |
||
2680 | struct intel_dp *intel_dp; |
||
2681 | enum port port; |
||
2682 | |||
2683 | if (encoder->type != INTEL_OUTPUT_EDP) |
||
2684 | continue; |
||
2685 | |||
2686 | intel_dp = enc_to_intel_dp(&encoder->base); |
||
2687 | port = dp_to_dig_port(intel_dp)->port; |
||
2688 | |||
2689 | if (intel_dp->pps_pipe != pipe) |
||
2690 | continue; |
||
2691 | |||
2692 | DRM_DEBUG_KMS("stealing pipe %c power sequencer from port %c\n", |
||
2693 | pipe_name(pipe), port_name(port)); |
||
2694 | |||
6084 | serge | 2695 | WARN(encoder->base.crtc, |
5354 | serge | 2696 | "stealing pipe %c power sequencer from active eDP port %c\n", |
2697 | pipe_name(pipe), port_name(port)); |
||
2698 | |||
2699 | /* make sure vdd is off before we steal it */ |
||
2700 | vlv_detach_power_sequencer(intel_dp); |
||
2701 | } |
||
2702 | } |
||
2703 | |||
2704 | static void vlv_init_panel_power_sequencer(struct intel_dp *intel_dp) |
||
2705 | { |
||
2706 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
||
2707 | struct intel_encoder *encoder = &intel_dig_port->base; |
||
2708 | struct drm_device *dev = encoder->base.dev; |
||
2709 | struct drm_i915_private *dev_priv = dev->dev_private; |
||
2710 | struct intel_crtc *crtc = to_intel_crtc(encoder->base.crtc); |
||
2711 | |||
2712 | lockdep_assert_held(&dev_priv->pps_mutex); |
||
2713 | |||
2714 | if (!is_edp(intel_dp)) |
||
2715 | return; |
||
2716 | |||
2717 | if (intel_dp->pps_pipe == crtc->pipe) |
||
2718 | return; |
||
2719 | |||
2720 | /* |
||
2721 | * If another power sequencer was being used on this |
||
2722 | * port previously make sure to turn off vdd there while |
||
2723 | * we still have control of it. |
||
2724 | */ |
||
2725 | if (intel_dp->pps_pipe != INVALID_PIPE) |
||
2726 | vlv_detach_power_sequencer(intel_dp); |
||
2727 | |||
2728 | /* |
||
2729 | * We may be stealing the power |
||
2730 | * sequencer from another port. |
||
2731 | */ |
||
2732 | vlv_steal_power_sequencer(dev, crtc->pipe); |
||
2733 | |||
2734 | /* now it's all ours */ |
||
2735 | intel_dp->pps_pipe = crtc->pipe; |
||
2736 | |||
2737 | DRM_DEBUG_KMS("initializing pipe %c power sequencer for port %c\n", |
||
2738 | pipe_name(intel_dp->pps_pipe), port_name(intel_dig_port->port)); |
||
2739 | |||
2740 | /* init power sequencer on this pipe and port */ |
||
2741 | intel_dp_init_panel_power_sequencer(dev, intel_dp); |
||
2742 | intel_dp_init_panel_power_sequencer_registers(dev, intel_dp); |
||
2743 | } |
||
2744 | |||
4104 | Serge | 2745 | static void vlv_pre_enable_dp(struct intel_encoder *encoder) |
2746 | { |
||
2747 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
||
2748 | struct intel_digital_port *dport = dp_to_dig_port(intel_dp); |
||
2749 | struct drm_device *dev = encoder->base.dev; |
||
2750 | struct drm_i915_private *dev_priv = dev->dev_private; |
||
2751 | struct intel_crtc *intel_crtc = to_intel_crtc(encoder->base.crtc); |
||
4560 | Serge | 2752 | enum dpio_channel port = vlv_dport_to_channel(dport); |
6084 | serge | 2753 | int pipe = intel_crtc->pipe; |
2754 | u32 val; |
||
4104 | Serge | 2755 | |
6084 | serge | 2756 | mutex_lock(&dev_priv->sb_lock); |
4104 | Serge | 2757 | |
4560 | Serge | 2758 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW8(port)); |
6084 | serge | 2759 | val = 0; |
2760 | if (pipe) |
||
2761 | val |= (1<<21); |
||
2762 | else |
||
2763 | val &= ~(1<<21); |
||
2764 | val |= 0x001000c4; |
||
4560 | Serge | 2765 | vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW8(port), val); |
2766 | vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW14(port), 0x00760018); |
||
2767 | vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW23(port), 0x00400888); |
||
4104 | Serge | 2768 | |
6084 | serge | 2769 | mutex_unlock(&dev_priv->sb_lock); |
4104 | Serge | 2770 | |
2771 | intel_enable_dp(encoder); |
||
4539 | Serge | 2772 | } |
4104 | Serge | 2773 | |
4560 | Serge | 2774 | static void vlv_dp_pre_pll_enable(struct intel_encoder *encoder) |
4104 | Serge | 2775 | { |
2776 | struct intel_digital_port *dport = enc_to_dig_port(&encoder->base); |
||
2777 | struct drm_device *dev = encoder->base.dev; |
||
2778 | struct drm_i915_private *dev_priv = dev->dev_private; |
||
4560 | Serge | 2779 | struct intel_crtc *intel_crtc = |
2780 | to_intel_crtc(encoder->base.crtc); |
||
2781 | enum dpio_channel port = vlv_dport_to_channel(dport); |
||
2782 | int pipe = intel_crtc->pipe; |
||
4104 | Serge | 2783 | |
5060 | serge | 2784 | intel_dp_prepare(encoder); |
2785 | |||
4104 | Serge | 2786 | /* Program Tx lane resets to default */ |
6084 | serge | 2787 | mutex_lock(&dev_priv->sb_lock); |
4560 | Serge | 2788 | vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW0(port), |
4104 | Serge | 2789 | DPIO_PCS_TX_LANE2_RESET | |
2790 | DPIO_PCS_TX_LANE1_RESET); |
||
4560 | Serge | 2791 | vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW1(port), |
4104 | Serge | 2792 | DPIO_PCS_CLK_CRI_RXEB_EIOS_EN | |
2793 | DPIO_PCS_CLK_CRI_RXDIGFILTSG_EN | |
||
2794 | (1< |
||
2795 | DPIO_PCS_CLK_SOFT_RESET); |
||
2796 | |||
2797 | /* Fix up inter-pair skew failure */ |
||
4560 | Serge | 2798 | vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW12(port), 0x00750f00); |
2799 | vlv_dpio_write(dev_priv, pipe, VLV_TX_DW11(port), 0x00001500); |
||
2800 | vlv_dpio_write(dev_priv, pipe, VLV_TX_DW14(port), 0x40400000); |
||
6084 | serge | 2801 | mutex_unlock(&dev_priv->sb_lock); |
4104 | Serge | 2802 | } |
2803 | |||
5060 | serge | 2804 | static void chv_pre_enable_dp(struct intel_encoder *encoder) |
2805 | { |
||
2806 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
||
2807 | struct intel_digital_port *dport = dp_to_dig_port(intel_dp); |
||
2808 | struct drm_device *dev = encoder->base.dev; |
||
2809 | struct drm_i915_private *dev_priv = dev->dev_private; |
||
2810 | struct intel_crtc *intel_crtc = |
||
2811 | to_intel_crtc(encoder->base.crtc); |
||
2812 | enum dpio_channel ch = vlv_dport_to_channel(dport); |
||
2813 | int pipe = intel_crtc->pipe; |
||
6084 | serge | 2814 | int data, i, stagger; |
5060 | serge | 2815 | u32 val; |
2816 | |||
6084 | serge | 2817 | mutex_lock(&dev_priv->sb_lock); |
5060 | serge | 2818 | |
5354 | serge | 2819 | /* allow hardware to manage TX FIFO reset source */ |
2820 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW11(ch)); |
||
2821 | val &= ~DPIO_LANEDESKEW_STRAP_OVRD; |
||
2822 | vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW11(ch), val); |
||
2823 | |||
6084 | serge | 2824 | if (intel_crtc->config->lane_count > 2) { |
2825 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW11(ch)); |
||
2826 | val &= ~DPIO_LANEDESKEW_STRAP_OVRD; |
||
2827 | vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW11(ch), val); |
||
2828 | } |
||
5354 | serge | 2829 | |
5060 | serge | 2830 | /* Program Tx lane latency optimal setting*/ |
6084 | serge | 2831 | for (i = 0; i < intel_crtc->config->lane_count; i++) { |
5060 | serge | 2832 | /* Set the upar bit */ |
6084 | serge | 2833 | if (intel_crtc->config->lane_count == 1) |
2834 | data = 0x0; |
||
2835 | else |
||
2836 | data = (i == 1) ? 0x0 : 0x1; |
||
5060 | serge | 2837 | vlv_dpio_write(dev_priv, pipe, CHV_TX_DW14(ch, i), |
2838 | data << DPIO_UPAR_SHIFT); |
||
2839 | } |
||
2840 | |||
2841 | /* Data lane stagger programming */ |
||
6084 | serge | 2842 | if (intel_crtc->config->port_clock > 270000) |
2843 | stagger = 0x18; |
||
2844 | else if (intel_crtc->config->port_clock > 135000) |
||
2845 | stagger = 0xd; |
||
2846 | else if (intel_crtc->config->port_clock > 67500) |
||
2847 | stagger = 0x7; |
||
2848 | else if (intel_crtc->config->port_clock > 33750) |
||
2849 | stagger = 0x4; |
||
2850 | else |
||
2851 | stagger = 0x2; |
||
5060 | serge | 2852 | |
6084 | serge | 2853 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW11(ch)); |
2854 | val |= DPIO_TX2_STAGGER_MASK(0x1f); |
||
2855 | vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW11(ch), val); |
||
5060 | serge | 2856 | |
6084 | serge | 2857 | if (intel_crtc->config->lane_count > 2) { |
2858 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW11(ch)); |
||
2859 | val |= DPIO_TX2_STAGGER_MASK(0x1f); |
||
2860 | vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW11(ch), val); |
||
2861 | } |
||
2862 | |||
2863 | vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW12(ch), |
||
2864 | DPIO_LANESTAGGER_STRAP(stagger) | |
||
2865 | DPIO_LANESTAGGER_STRAP_OVRD | |
||
2866 | DPIO_TX1_STAGGER_MASK(0x1f) | |
||
2867 | DPIO_TX1_STAGGER_MULT(6) | |
||
2868 | DPIO_TX2_STAGGER_MULT(0)); |
||
2869 | |||
2870 | if (intel_crtc->config->lane_count > 2) { |
||
2871 | vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW12(ch), |
||
2872 | DPIO_LANESTAGGER_STRAP(stagger) | |
||
2873 | DPIO_LANESTAGGER_STRAP_OVRD | |
||
2874 | DPIO_TX1_STAGGER_MASK(0x1f) | |
||
2875 | DPIO_TX1_STAGGER_MULT(7) | |
||
2876 | DPIO_TX2_STAGGER_MULT(5)); |
||
2877 | } |
||
2878 | |||
2879 | /* Deassert data lane reset */ |
||
2880 | chv_data_lane_soft_reset(encoder, false); |
||
2881 | |||
2882 | mutex_unlock(&dev_priv->sb_lock); |
||
2883 | |||
5060 | serge | 2884 | intel_enable_dp(encoder); |
6084 | serge | 2885 | |
2886 | /* Second common lane will stay alive on its own now */ |
||
2887 | if (dport->release_cl2_override) { |
||
2888 | chv_phy_powergate_ch(dev_priv, DPIO_PHY0, DPIO_CH1, false); |
||
2889 | dport->release_cl2_override = false; |
||
2890 | } |
||
5060 | serge | 2891 | } |
2892 | |||
2893 | static void chv_dp_pre_pll_enable(struct intel_encoder *encoder) |
||
2894 | { |
||
2895 | struct intel_digital_port *dport = enc_to_dig_port(&encoder->base); |
||
2896 | struct drm_device *dev = encoder->base.dev; |
||
2897 | struct drm_i915_private *dev_priv = dev->dev_private; |
||
2898 | struct intel_crtc *intel_crtc = |
||
2899 | to_intel_crtc(encoder->base.crtc); |
||
2900 | enum dpio_channel ch = vlv_dport_to_channel(dport); |
||
2901 | enum pipe pipe = intel_crtc->pipe; |
||
6084 | serge | 2902 | unsigned int lane_mask = |
2903 | intel_dp_unused_lane_mask(intel_crtc->config->lane_count); |
||
5060 | serge | 2904 | u32 val; |
2905 | |||
5354 | serge | 2906 | intel_dp_prepare(encoder); |
2907 | |||
6084 | serge | 2908 | /* |
2909 | * Must trick the second common lane into life. |
||
2910 | * Otherwise we can't even access the PLL. |
||
2911 | */ |
||
2912 | if (ch == DPIO_CH0 && pipe == PIPE_B) |
||
2913 | dport->release_cl2_override = |
||
2914 | !chv_phy_powergate_ch(dev_priv, DPIO_PHY0, DPIO_CH1, true); |
||
5060 | serge | 2915 | |
6084 | serge | 2916 | chv_phy_powergate_lanes(encoder, true, lane_mask); |
2917 | |||
2918 | mutex_lock(&dev_priv->sb_lock); |
||
2919 | |||
2920 | /* Assert data lane reset */ |
||
2921 | chv_data_lane_soft_reset(encoder, true); |
||
2922 | |||
5060 | serge | 2923 | /* program left/right clock distribution */ |
2924 | if (pipe != PIPE_B) { |
||
2925 | val = vlv_dpio_read(dev_priv, pipe, _CHV_CMN_DW5_CH0); |
||
2926 | val &= ~(CHV_BUFLEFTENA1_MASK | CHV_BUFRIGHTENA1_MASK); |
||
2927 | if (ch == DPIO_CH0) |
||
2928 | val |= CHV_BUFLEFTENA1_FORCE; |
||
2929 | if (ch == DPIO_CH1) |
||
2930 | val |= CHV_BUFRIGHTENA1_FORCE; |
||
2931 | vlv_dpio_write(dev_priv, pipe, _CHV_CMN_DW5_CH0, val); |
||
2932 | } else { |
||
2933 | val = vlv_dpio_read(dev_priv, pipe, _CHV_CMN_DW1_CH1); |
||
2934 | val &= ~(CHV_BUFLEFTENA2_MASK | CHV_BUFRIGHTENA2_MASK); |
||
2935 | if (ch == DPIO_CH0) |
||
2936 | val |= CHV_BUFLEFTENA2_FORCE; |
||
2937 | if (ch == DPIO_CH1) |
||
2938 | val |= CHV_BUFRIGHTENA2_FORCE; |
||
2939 | vlv_dpio_write(dev_priv, pipe, _CHV_CMN_DW1_CH1, val); |
||
2940 | } |
||
2941 | |||
2942 | /* program clock channel usage */ |
||
2943 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW8(ch)); |
||
2944 | val |= CHV_PCS_USEDCLKCHANNEL_OVRRIDE; |
||
2945 | if (pipe != PIPE_B) |
||
2946 | val &= ~CHV_PCS_USEDCLKCHANNEL; |
||
2947 | else |
||
2948 | val |= CHV_PCS_USEDCLKCHANNEL; |
||
2949 | vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW8(ch), val); |
||
2950 | |||
6084 | serge | 2951 | if (intel_crtc->config->lane_count > 2) { |
2952 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW8(ch)); |
||
2953 | val |= CHV_PCS_USEDCLKCHANNEL_OVRRIDE; |
||
2954 | if (pipe != PIPE_B) |
||
2955 | val &= ~CHV_PCS_USEDCLKCHANNEL; |
||
2956 | else |
||
2957 | val |= CHV_PCS_USEDCLKCHANNEL; |
||
2958 | vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW8(ch), val); |
||
2959 | } |
||
5060 | serge | 2960 | |
2961 | /* |
||
2962 | * This a a bit weird since generally CL |
||
2963 | * matches the pipe, but here we need to |
||
2964 | * pick the CL based on the port. |
||
2965 | */ |
||
2966 | val = vlv_dpio_read(dev_priv, pipe, CHV_CMN_DW19(ch)); |
||
2967 | if (pipe != PIPE_B) |
||
2968 | val &= ~CHV_CMN_USEDCLKCHANNEL; |
||
2969 | else |
||
2970 | val |= CHV_CMN_USEDCLKCHANNEL; |
||
2971 | vlv_dpio_write(dev_priv, pipe, CHV_CMN_DW19(ch), val); |
||
2972 | |||
6084 | serge | 2973 | mutex_unlock(&dev_priv->sb_lock); |
5060 | serge | 2974 | } |
2975 | |||
6084 | serge | 2976 | static void chv_dp_post_pll_disable(struct intel_encoder *encoder) |
2977 | { |
||
2978 | struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); |
||
2979 | enum pipe pipe = to_intel_crtc(encoder->base.crtc)->pipe; |
||
2980 | u32 val; |
||
2981 | |||
2982 | mutex_lock(&dev_priv->sb_lock); |
||
2983 | |||
2984 | /* disable left/right clock distribution */ |
||
2985 | if (pipe != PIPE_B) { |
||
2986 | val = vlv_dpio_read(dev_priv, pipe, _CHV_CMN_DW5_CH0); |
||
2987 | val &= ~(CHV_BUFLEFTENA1_MASK | CHV_BUFRIGHTENA1_MASK); |
||
2988 | vlv_dpio_write(dev_priv, pipe, _CHV_CMN_DW5_CH0, val); |
||
2989 | } else { |
||
2990 | val = vlv_dpio_read(dev_priv, pipe, _CHV_CMN_DW1_CH1); |
||
2991 | val &= ~(CHV_BUFLEFTENA2_MASK | CHV_BUFRIGHTENA2_MASK); |
||
2992 | vlv_dpio_write(dev_priv, pipe, _CHV_CMN_DW1_CH1, val); |
||
2993 | } |
||
2994 | |||
2995 | mutex_unlock(&dev_priv->sb_lock); |
||
2996 | |||
2997 | /* |
||
2998 | * Leave the power down bit cleared for at least one |
||
2999 | * lane so that chv_powergate_phy_ch() will power |
||
3000 | * on something when the channel is otherwise unused. |
||
3001 | * When the port is off and the override is removed |
||
3002 | * the lanes power down anyway, so otherwise it doesn't |
||
3003 | * really matter what the state of power down bits is |
||
3004 | * after this. |
||
3005 | */ |
||
3006 | chv_phy_powergate_lanes(encoder, false, 0x0); |
||
3007 | } |
||
3008 | |||
2330 | Serge | 3009 | /* |
3010 | * Native read with retry for link status and receiver capability reads for |
||
3011 | * cases where the sink may still be asleep. |
||
5060 | serge | 3012 | * |
3013 | * Sinks are *supposed* to come up within 1ms from an off state, but we're also |
||
3014 | * supposed to retry 3 times per the spec. |
||
2330 | Serge | 3015 | */ |
5060 | serge | 3016 | static ssize_t |
3017 | intel_dp_dpcd_read_wake(struct drm_dp_aux *aux, unsigned int offset, |
||
3018 | void *buffer, size_t size) |
||
2330 | Serge | 3019 | { |
5060 | serge | 3020 | ssize_t ret; |
3021 | int i; |
||
2330 | Serge | 3022 | |
5354 | serge | 3023 | /* |
3024 | * Sometime we just get the same incorrect byte repeated |
||
3025 | * over the entire buffer. Doing just one throw away read |
||
3026 | * initially seems to "solve" it. |
||
3027 | */ |
||
3028 | drm_dp_dpcd_read(aux, DP_DPCD_REV, buffer, 1); |
||
3029 | |||
2330 | Serge | 3030 | for (i = 0; i < 3; i++) { |
5060 | serge | 3031 | ret = drm_dp_dpcd_read(aux, offset, buffer, size); |
3032 | if (ret == size) |
||
3033 | return ret; |
||
2330 | Serge | 3034 | msleep(1); |
3035 | } |
||
3036 | |||
5060 | serge | 3037 | return ret; |
2330 | Serge | 3038 | } |
3039 | |||
3040 | /* |
||
3041 | * Fetch AUX CH registers 0x202 - 0x207 which contain |
||
3042 | * link status information |
||
3043 | */ |
||
3044 | static bool |
||
2342 | Serge | 3045 | intel_dp_get_link_status(struct intel_dp *intel_dp, uint8_t link_status[DP_LINK_STATUS_SIZE]) |
2330 | Serge | 3046 | { |
5060 | serge | 3047 | return intel_dp_dpcd_read_wake(&intel_dp->aux, |
6084 | serge | 3048 | DP_LANE0_1_STATUS, |
3049 | link_status, |
||
5060 | serge | 3050 | DP_LINK_STATUS_SIZE) == DP_LINK_STATUS_SIZE; |
2330 | Serge | 3051 | } |
3052 | |||
5060 | serge | 3053 | /* These are source-specific values. */ |
2330 | Serge | 3054 | static uint8_t |
2342 | Serge | 3055 | intel_dp_voltage_max(struct intel_dp *intel_dp) |
2330 | Serge | 3056 | { |
3243 | Serge | 3057 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
6084 | serge | 3058 | struct drm_i915_private *dev_priv = dev->dev_private; |
4104 | Serge | 3059 | enum port port = dp_to_dig_port(intel_dp)->port; |
2342 | Serge | 3060 | |
6084 | serge | 3061 | if (IS_BROXTON(dev)) |
3062 | return DP_TRAIN_VOLTAGE_SWING_LEVEL_3; |
||
3063 | else if (INTEL_INFO(dev)->gen >= 9) { |
||
3064 | if (dev_priv->edp_low_vswing && port == PORT_A) |
||
3065 | return DP_TRAIN_VOLTAGE_SWING_LEVEL_3; |
||
5354 | serge | 3066 | return DP_TRAIN_VOLTAGE_SWING_LEVEL_2; |
6084 | serge | 3067 | } else if (IS_VALLEYVIEW(dev)) |
5354 | serge | 3068 | return DP_TRAIN_VOLTAGE_SWING_LEVEL_3; |
4104 | Serge | 3069 | else if (IS_GEN7(dev) && port == PORT_A) |
5354 | serge | 3070 | return DP_TRAIN_VOLTAGE_SWING_LEVEL_2; |
4104 | Serge | 3071 | else if (HAS_PCH_CPT(dev) && port != PORT_A) |
5354 | serge | 3072 | return DP_TRAIN_VOLTAGE_SWING_LEVEL_3; |
2342 | Serge | 3073 | else |
5354 | serge | 3074 | return DP_TRAIN_VOLTAGE_SWING_LEVEL_2; |
2342 | Serge | 3075 | } |
3076 | |||
3077 | static uint8_t |
||
3078 | intel_dp_pre_emphasis_max(struct intel_dp *intel_dp, uint8_t voltage_swing) |
||
3079 | { |
||
3243 | Serge | 3080 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
4104 | Serge | 3081 | enum port port = dp_to_dig_port(intel_dp)->port; |
2342 | Serge | 3082 | |
5354 | serge | 3083 | if (INTEL_INFO(dev)->gen >= 9) { |
2342 | Serge | 3084 | switch (voltage_swing & DP_TRAIN_VOLTAGE_SWING_MASK) { |
5354 | serge | 3085 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
3086 | return DP_TRAIN_PRE_EMPH_LEVEL_3; |
||
3087 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: |
||
3088 | return DP_TRAIN_PRE_EMPH_LEVEL_2; |
||
3089 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2: |
||
3090 | return DP_TRAIN_PRE_EMPH_LEVEL_1; |
||
6084 | serge | 3091 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_3: |
3092 | return DP_TRAIN_PRE_EMPH_LEVEL_0; |
||
3243 | Serge | 3093 | default: |
5354 | serge | 3094 | return DP_TRAIN_PRE_EMPH_LEVEL_0; |
3243 | Serge | 3095 | } |
5354 | serge | 3096 | } else if (IS_HASWELL(dev) || IS_BROADWELL(dev)) { |
3097 | switch (voltage_swing & DP_TRAIN_VOLTAGE_SWING_MASK) { |
||
3098 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
||
3099 | return DP_TRAIN_PRE_EMPH_LEVEL_3; |
||
3100 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: |
||
3101 | return DP_TRAIN_PRE_EMPH_LEVEL_2; |
||
3102 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2: |
||
3103 | return DP_TRAIN_PRE_EMPH_LEVEL_1; |
||
3104 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_3: |
||
3105 | default: |
||
3106 | return DP_TRAIN_PRE_EMPH_LEVEL_0; |
||
3107 | } |
||
4104 | Serge | 3108 | } else if (IS_VALLEYVIEW(dev)) { |
3243 | Serge | 3109 | switch (voltage_swing & DP_TRAIN_VOLTAGE_SWING_MASK) { |
5354 | serge | 3110 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
3111 | return DP_TRAIN_PRE_EMPH_LEVEL_3; |
||
3112 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: |
||
3113 | return DP_TRAIN_PRE_EMPH_LEVEL_2; |
||
3114 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2: |
||
3115 | return DP_TRAIN_PRE_EMPH_LEVEL_1; |
||
3116 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_3: |
||
4104 | Serge | 3117 | default: |
5354 | serge | 3118 | return DP_TRAIN_PRE_EMPH_LEVEL_0; |
4104 | Serge | 3119 | } |
3120 | } else if (IS_GEN7(dev) && port == PORT_A) { |
||
3121 | switch (voltage_swing & DP_TRAIN_VOLTAGE_SWING_MASK) { |
||
5354 | serge | 3122 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
3123 | return DP_TRAIN_PRE_EMPH_LEVEL_2; |
||
3124 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: |
||
3125 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2: |
||
3126 | return DP_TRAIN_PRE_EMPH_LEVEL_1; |
||
2342 | Serge | 3127 | default: |
5354 | serge | 3128 | return DP_TRAIN_PRE_EMPH_LEVEL_0; |
2342 | Serge | 3129 | } |
3130 | } else { |
||
6084 | serge | 3131 | switch (voltage_swing & DP_TRAIN_VOLTAGE_SWING_MASK) { |
5354 | serge | 3132 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
3133 | return DP_TRAIN_PRE_EMPH_LEVEL_2; |
||
3134 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: |
||
3135 | return DP_TRAIN_PRE_EMPH_LEVEL_2; |
||
3136 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2: |
||
3137 | return DP_TRAIN_PRE_EMPH_LEVEL_1; |
||
3138 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_3: |
||
6084 | serge | 3139 | default: |
5354 | serge | 3140 | return DP_TRAIN_PRE_EMPH_LEVEL_0; |
6084 | serge | 3141 | } |
2330 | Serge | 3142 | } |
3143 | } |
||
3144 | |||
6084 | serge | 3145 | static uint32_t vlv_signal_levels(struct intel_dp *intel_dp) |
4104 | Serge | 3146 | { |
3147 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
||
3148 | struct drm_i915_private *dev_priv = dev->dev_private; |
||
3149 | struct intel_digital_port *dport = dp_to_dig_port(intel_dp); |
||
4560 | Serge | 3150 | struct intel_crtc *intel_crtc = |
3151 | to_intel_crtc(dport->base.base.crtc); |
||
4104 | Serge | 3152 | unsigned long demph_reg_value, preemph_reg_value, |
3153 | uniqtranscale_reg_value; |
||
3154 | uint8_t train_set = intel_dp->train_set[0]; |
||
4560 | Serge | 3155 | enum dpio_channel port = vlv_dport_to_channel(dport); |
3156 | int pipe = intel_crtc->pipe; |
||
4104 | Serge | 3157 | |
3158 | switch (train_set & DP_TRAIN_PRE_EMPHASIS_MASK) { |
||
5354 | serge | 3159 | case DP_TRAIN_PRE_EMPH_LEVEL_0: |
4104 | Serge | 3160 | preemph_reg_value = 0x0004000; |
3161 | switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) { |
||
5354 | serge | 3162 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
4104 | Serge | 3163 | demph_reg_value = 0x2B405555; |
3164 | uniqtranscale_reg_value = 0x552AB83A; |
||
3165 | break; |
||
5354 | serge | 3166 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: |
4104 | Serge | 3167 | demph_reg_value = 0x2B404040; |
3168 | uniqtranscale_reg_value = 0x5548B83A; |
||
3169 | break; |
||
5354 | serge | 3170 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2: |
4104 | Serge | 3171 | demph_reg_value = 0x2B245555; |
3172 | uniqtranscale_reg_value = 0x5560B83A; |
||
3173 | break; |
||
5354 | serge | 3174 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_3: |
4104 | Serge | 3175 | demph_reg_value = 0x2B405555; |
3176 | uniqtranscale_reg_value = 0x5598DA3A; |
||
3177 | break; |
||
3178 | default: |
||
3179 | return 0; |
||
3180 | } |
||
3181 | break; |
||
5354 | serge | 3182 | case DP_TRAIN_PRE_EMPH_LEVEL_1: |
4104 | Serge | 3183 | preemph_reg_value = 0x0002000; |
3184 | switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) { |
||
5354 | serge | 3185 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
4104 | Serge | 3186 | demph_reg_value = 0x2B404040; |
3187 | uniqtranscale_reg_value = 0x5552B83A; |
||
3188 | break; |
||
5354 | serge | 3189 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: |
4104 | Serge | 3190 | demph_reg_value = 0x2B404848; |
3191 | uniqtranscale_reg_value = 0x5580B83A; |
||
3192 | break; |
||
5354 | serge | 3193 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2: |
4104 | Serge | 3194 | demph_reg_value = 0x2B404040; |
3195 | uniqtranscale_reg_value = 0x55ADDA3A; |
||
3196 | break; |
||
3197 | default: |
||
3198 | return 0; |
||
3199 | } |
||
3200 | break; |
||
5354 | serge | 3201 | case DP_TRAIN_PRE_EMPH_LEVEL_2: |
4104 | Serge | 3202 | preemph_reg_value = 0x0000000; |
3203 | switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) { |
||
5354 | serge | 3204 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
4104 | Serge | 3205 | demph_reg_value = 0x2B305555; |
3206 | uniqtranscale_reg_value = 0x5570B83A; |
||
3207 | break; |
||
5354 | serge | 3208 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: |
4104 | Serge | 3209 | demph_reg_value = 0x2B2B4040; |
3210 | uniqtranscale_reg_value = 0x55ADDA3A; |
||
3211 | break; |
||
3212 | default: |
||
3213 | return 0; |
||
3214 | } |
||
3215 | break; |
||
5354 | serge | 3216 | case DP_TRAIN_PRE_EMPH_LEVEL_3: |
4104 | Serge | 3217 | preemph_reg_value = 0x0006000; |
3218 | switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) { |
||
5354 | serge | 3219 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
4104 | Serge | 3220 | demph_reg_value = 0x1B405555; |
3221 | uniqtranscale_reg_value = 0x55ADDA3A; |
||
3222 | break; |
||
3223 | default: |
||
3224 | return 0; |
||
3225 | } |
||
3226 | break; |
||
3227 | default: |
||
3228 | return 0; |
||
3229 | } |
||
3230 | |||
6084 | serge | 3231 | mutex_lock(&dev_priv->sb_lock); |
4560 | Serge | 3232 | vlv_dpio_write(dev_priv, pipe, VLV_TX_DW5(port), 0x00000000); |
3233 | vlv_dpio_write(dev_priv, pipe, VLV_TX_DW4(port), demph_reg_value); |
||
3234 | vlv_dpio_write(dev_priv, pipe, VLV_TX_DW2(port), |
||
4104 | Serge | 3235 | uniqtranscale_reg_value); |
4560 | Serge | 3236 | vlv_dpio_write(dev_priv, pipe, VLV_TX_DW3(port), 0x0C782040); |
3237 | vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW11(port), 0x00030000); |
||
3238 | vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW9(port), preemph_reg_value); |
||
3239 | vlv_dpio_write(dev_priv, pipe, VLV_TX_DW5(port), 0x80000000); |
||
6084 | serge | 3240 | mutex_unlock(&dev_priv->sb_lock); |
4104 | Serge | 3241 | |
3242 | return 0; |
||
3243 | } |
||
3244 | |||
6084 | serge | 3245 | static bool chv_need_uniq_trans_scale(uint8_t train_set) |
5060 | serge | 3246 | { |
6084 | serge | 3247 | return (train_set & DP_TRAIN_PRE_EMPHASIS_MASK) == DP_TRAIN_PRE_EMPH_LEVEL_0 && |
3248 | (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) == DP_TRAIN_VOLTAGE_SWING_LEVEL_3; |
||
3249 | } |
||
3250 | |||
3251 | static uint32_t chv_signal_levels(struct intel_dp *intel_dp) |
||
3252 | { |
||
5060 | serge | 3253 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
3254 | struct drm_i915_private *dev_priv = dev->dev_private; |
||
3255 | struct intel_digital_port *dport = dp_to_dig_port(intel_dp); |
||
3256 | struct intel_crtc *intel_crtc = to_intel_crtc(dport->base.base.crtc); |
||
3257 | u32 deemph_reg_value, margin_reg_value, val; |
||
3258 | uint8_t train_set = intel_dp->train_set[0]; |
||
3259 | enum dpio_channel ch = vlv_dport_to_channel(dport); |
||
3260 | enum pipe pipe = intel_crtc->pipe; |
||
3261 | int i; |
||
3262 | |||
3263 | switch (train_set & DP_TRAIN_PRE_EMPHASIS_MASK) { |
||
5354 | serge | 3264 | case DP_TRAIN_PRE_EMPH_LEVEL_0: |
5060 | serge | 3265 | switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) { |
5354 | serge | 3266 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
5060 | serge | 3267 | deemph_reg_value = 128; |
3268 | margin_reg_value = 52; |
||
3269 | break; |
||
5354 | serge | 3270 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: |
5060 | serge | 3271 | deemph_reg_value = 128; |
3272 | margin_reg_value = 77; |
||
3273 | break; |
||
5354 | serge | 3274 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2: |
5060 | serge | 3275 | deemph_reg_value = 128; |
3276 | margin_reg_value = 102; |
||
3277 | break; |
||
5354 | serge | 3278 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_3: |
5060 | serge | 3279 | deemph_reg_value = 128; |
3280 | margin_reg_value = 154; |
||
3281 | /* FIXME extra to set for 1200 */ |
||
3282 | break; |
||
3283 | default: |
||
3284 | return 0; |
||
3285 | } |
||
3286 | break; |
||
5354 | serge | 3287 | case DP_TRAIN_PRE_EMPH_LEVEL_1: |
5060 | serge | 3288 | switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) { |
5354 | serge | 3289 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
5060 | serge | 3290 | deemph_reg_value = 85; |
3291 | margin_reg_value = 78; |
||
3292 | break; |
||
5354 | serge | 3293 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: |
5060 | serge | 3294 | deemph_reg_value = 85; |
3295 | margin_reg_value = 116; |
||
3296 | break; |
||
5354 | serge | 3297 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2: |
5060 | serge | 3298 | deemph_reg_value = 85; |
3299 | margin_reg_value = 154; |
||
3300 | break; |
||
3301 | default: |
||
3302 | return 0; |
||
3303 | } |
||
3304 | break; |
||
5354 | serge | 3305 | case DP_TRAIN_PRE_EMPH_LEVEL_2: |
5060 | serge | 3306 | switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) { |
5354 | serge | 3307 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
5060 | serge | 3308 | deemph_reg_value = 64; |
3309 | margin_reg_value = 104; |
||
3310 | break; |
||
5354 | serge | 3311 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: |
5060 | serge | 3312 | deemph_reg_value = 64; |
3313 | margin_reg_value = 154; |
||
3314 | break; |
||
3315 | default: |
||
3316 | return 0; |
||
3317 | } |
||
3318 | break; |
||
5354 | serge | 3319 | case DP_TRAIN_PRE_EMPH_LEVEL_3: |
5060 | serge | 3320 | switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) { |
5354 | serge | 3321 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
5060 | serge | 3322 | deemph_reg_value = 43; |
3323 | margin_reg_value = 154; |
||
3324 | break; |
||
3325 | default: |
||
3326 | return 0; |
||
3327 | } |
||
3328 | break; |
||
3329 | default: |
||
3330 | return 0; |
||
3331 | } |
||
3332 | |||
6084 | serge | 3333 | mutex_lock(&dev_priv->sb_lock); |
5060 | serge | 3334 | |
3335 | /* Clear calc init */ |
||
3336 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW10(ch)); |
||
3337 | val &= ~(DPIO_PCS_SWING_CALC_TX0_TX2 | DPIO_PCS_SWING_CALC_TX1_TX3); |
||
5354 | serge | 3338 | val &= ~(DPIO_PCS_TX1DEEMP_MASK | DPIO_PCS_TX2DEEMP_MASK); |
3339 | val |= DPIO_PCS_TX1DEEMP_9P5 | DPIO_PCS_TX2DEEMP_9P5; |
||
5060 | serge | 3340 | vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW10(ch), val); |
3341 | |||
6084 | serge | 3342 | if (intel_crtc->config->lane_count > 2) { |
3343 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW10(ch)); |
||
3344 | val &= ~(DPIO_PCS_SWING_CALC_TX0_TX2 | DPIO_PCS_SWING_CALC_TX1_TX3); |
||
3345 | val &= ~(DPIO_PCS_TX1DEEMP_MASK | DPIO_PCS_TX2DEEMP_MASK); |
||
3346 | val |= DPIO_PCS_TX1DEEMP_9P5 | DPIO_PCS_TX2DEEMP_9P5; |
||
3347 | vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW10(ch), val); |
||
3348 | } |
||
5060 | serge | 3349 | |
5354 | serge | 3350 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW9(ch)); |
3351 | val &= ~(DPIO_PCS_TX1MARGIN_MASK | DPIO_PCS_TX2MARGIN_MASK); |
||
3352 | val |= DPIO_PCS_TX1MARGIN_000 | DPIO_PCS_TX2MARGIN_000; |
||
3353 | vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW9(ch), val); |
||
3354 | |||
6084 | serge | 3355 | if (intel_crtc->config->lane_count > 2) { |
3356 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW9(ch)); |
||
3357 | val &= ~(DPIO_PCS_TX1MARGIN_MASK | DPIO_PCS_TX2MARGIN_MASK); |
||
3358 | val |= DPIO_PCS_TX1MARGIN_000 | DPIO_PCS_TX2MARGIN_000; |
||
3359 | vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW9(ch), val); |
||
3360 | } |
||
5354 | serge | 3361 | |
5060 | serge | 3362 | /* Program swing deemph */ |
6084 | serge | 3363 | for (i = 0; i < intel_crtc->config->lane_count; i++) { |
5060 | serge | 3364 | val = vlv_dpio_read(dev_priv, pipe, CHV_TX_DW4(ch, i)); |
3365 | val &= ~DPIO_SWING_DEEMPH9P5_MASK; |
||
3366 | val |= deemph_reg_value << DPIO_SWING_DEEMPH9P5_SHIFT; |
||
3367 | vlv_dpio_write(dev_priv, pipe, CHV_TX_DW4(ch, i), val); |
||
3368 | } |
||
3369 | |||
3370 | /* Program swing margin */ |
||
6084 | serge | 3371 | for (i = 0; i < intel_crtc->config->lane_count; i++) { |
5060 | serge | 3372 | val = vlv_dpio_read(dev_priv, pipe, CHV_TX_DW2(ch, i)); |
6084 | serge | 3373 | |
5354 | serge | 3374 | val &= ~DPIO_SWING_MARGIN000_MASK; |
3375 | val |= margin_reg_value << DPIO_SWING_MARGIN000_SHIFT; |
||
6084 | serge | 3376 | |
3377 | /* |
||
3378 | * Supposedly this value shouldn't matter when unique transition |
||
3379 | * scale is disabled, but in fact it does matter. Let's just |
||
3380 | * always program the same value and hope it's OK. |
||
3381 | */ |
||
3382 | val &= ~(0xff << DPIO_UNIQ_TRANS_SCALE_SHIFT); |
||
3383 | val |= 0x9a << DPIO_UNIQ_TRANS_SCALE_SHIFT; |
||
3384 | |||
5060 | serge | 3385 | vlv_dpio_write(dev_priv, pipe, CHV_TX_DW2(ch, i), val); |
3386 | } |
||
3387 | |||
6084 | serge | 3388 | /* |
3389 | * The document said it needs to set bit 27 for ch0 and bit 26 |
||
3390 | * for ch1. Might be a typo in the doc. |
||
3391 | * For now, for this unique transition scale selection, set bit |
||
3392 | * 27 for ch0 and ch1. |
||
3393 | */ |
||
3394 | for (i = 0; i < intel_crtc->config->lane_count; i++) { |
||
5060 | serge | 3395 | val = vlv_dpio_read(dev_priv, pipe, CHV_TX_DW3(ch, i)); |
6084 | serge | 3396 | if (chv_need_uniq_trans_scale(train_set)) |
3397 | val |= DPIO_TX_UNIQ_TRANS_SCALE_EN; |
||
3398 | else |
||
3399 | val &= ~DPIO_TX_UNIQ_TRANS_SCALE_EN; |
||
5060 | serge | 3400 | vlv_dpio_write(dev_priv, pipe, CHV_TX_DW3(ch, i), val); |
3401 | } |
||
3402 | |||
3403 | /* Start swing calculation */ |
||
3404 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW10(ch)); |
||
3405 | val |= DPIO_PCS_SWING_CALC_TX0_TX2 | DPIO_PCS_SWING_CALC_TX1_TX3; |
||
3406 | vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW10(ch), val); |
||
3407 | |||
6084 | serge | 3408 | if (intel_crtc->config->lane_count > 2) { |
3409 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW10(ch)); |
||
3410 | val |= DPIO_PCS_SWING_CALC_TX0_TX2 | DPIO_PCS_SWING_CALC_TX1_TX3; |
||
3411 | vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW10(ch), val); |
||
3412 | } |
||
5060 | serge | 3413 | |
6084 | serge | 3414 | mutex_unlock(&dev_priv->sb_lock); |
5060 | serge | 3415 | |
3416 | return 0; |
||
3417 | } |
||
3418 | |||
2330 | Serge | 3419 | static void |
4560 | Serge | 3420 | intel_get_adjust_train(struct intel_dp *intel_dp, |
3421 | const uint8_t link_status[DP_LINK_STATUS_SIZE]) |
||
2330 | Serge | 3422 | { |
3423 | uint8_t v = 0; |
||
3424 | uint8_t p = 0; |
||
3425 | int lane; |
||
2342 | Serge | 3426 | uint8_t voltage_max; |
3427 | uint8_t preemph_max; |
||
2330 | Serge | 3428 | |
3429 | for (lane = 0; lane < intel_dp->lane_count; lane++) { |
||
3243 | Serge | 3430 | uint8_t this_v = drm_dp_get_adjust_request_voltage(link_status, lane); |
3431 | uint8_t this_p = drm_dp_get_adjust_request_pre_emphasis(link_status, lane); |
||
2330 | Serge | 3432 | |
3433 | if (this_v > v) |
||
3434 | v = this_v; |
||
3435 | if (this_p > p) |
||
3436 | p = this_p; |
||
3437 | } |
||
3438 | |||
2342 | Serge | 3439 | voltage_max = intel_dp_voltage_max(intel_dp); |
3440 | if (v >= voltage_max) |
||
3441 | v = voltage_max | DP_TRAIN_MAX_SWING_REACHED; |
||
2330 | Serge | 3442 | |
2342 | Serge | 3443 | preemph_max = intel_dp_pre_emphasis_max(intel_dp, v); |
3444 | if (p >= preemph_max) |
||
3445 | p = preemph_max | DP_TRAIN_MAX_PRE_EMPHASIS_REACHED; |
||
2330 | Serge | 3446 | |
3447 | for (lane = 0; lane < 4; lane++) |
||
3448 | intel_dp->train_set[lane] = v | p; |
||
3449 | } |
||
3450 | |||
3451 | static uint32_t |
||
6084 | serge | 3452 | gen4_signal_levels(uint8_t train_set) |
2330 | Serge | 3453 | { |
3454 | uint32_t signal_levels = 0; |
||
3455 | |||
3456 | switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) { |
||
5354 | serge | 3457 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
2330 | Serge | 3458 | default: |
3459 | signal_levels |= DP_VOLTAGE_0_4; |
||
3460 | break; |
||
5354 | serge | 3461 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: |
2330 | Serge | 3462 | signal_levels |= DP_VOLTAGE_0_6; |
3463 | break; |
||
5354 | serge | 3464 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2: |
2330 | Serge | 3465 | signal_levels |= DP_VOLTAGE_0_8; |
3466 | break; |
||
5354 | serge | 3467 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_3: |
2330 | Serge | 3468 | signal_levels |= DP_VOLTAGE_1_2; |
3469 | break; |
||
3470 | } |
||
3471 | switch (train_set & DP_TRAIN_PRE_EMPHASIS_MASK) { |
||
5354 | serge | 3472 | case DP_TRAIN_PRE_EMPH_LEVEL_0: |
2330 | Serge | 3473 | default: |
3474 | signal_levels |= DP_PRE_EMPHASIS_0; |
||
3475 | break; |
||
5354 | serge | 3476 | case DP_TRAIN_PRE_EMPH_LEVEL_1: |
2330 | Serge | 3477 | signal_levels |= DP_PRE_EMPHASIS_3_5; |
3478 | break; |
||
5354 | serge | 3479 | case DP_TRAIN_PRE_EMPH_LEVEL_2: |
2330 | Serge | 3480 | signal_levels |= DP_PRE_EMPHASIS_6; |
3481 | break; |
||
5354 | serge | 3482 | case DP_TRAIN_PRE_EMPH_LEVEL_3: |
2330 | Serge | 3483 | signal_levels |= DP_PRE_EMPHASIS_9_5; |
3484 | break; |
||
3485 | } |
||
3486 | return signal_levels; |
||
3487 | } |
||
3488 | |||
3489 | /* Gen6's DP voltage swing and pre-emphasis control */ |
||
3490 | static uint32_t |
||
6084 | serge | 3491 | gen6_edp_signal_levels(uint8_t train_set) |
2330 | Serge | 3492 | { |
3493 | int signal_levels = train_set & (DP_TRAIN_VOLTAGE_SWING_MASK | |
||
3494 | DP_TRAIN_PRE_EMPHASIS_MASK); |
||
3495 | switch (signal_levels) { |
||
5354 | serge | 3496 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_0: |
3497 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1 | DP_TRAIN_PRE_EMPH_LEVEL_0: |
||
2330 | Serge | 3498 | return EDP_LINK_TRAIN_400_600MV_0DB_SNB_B; |
5354 | serge | 3499 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_1: |
2330 | Serge | 3500 | return EDP_LINK_TRAIN_400MV_3_5DB_SNB_B; |
5354 | serge | 3501 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_2: |
3502 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1 | DP_TRAIN_PRE_EMPH_LEVEL_2: |
||
2330 | Serge | 3503 | return EDP_LINK_TRAIN_400_600MV_6DB_SNB_B; |
5354 | serge | 3504 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1 | DP_TRAIN_PRE_EMPH_LEVEL_1: |
3505 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2 | DP_TRAIN_PRE_EMPH_LEVEL_1: |
||
2330 | Serge | 3506 | return EDP_LINK_TRAIN_600_800MV_3_5DB_SNB_B; |
5354 | serge | 3507 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2 | DP_TRAIN_PRE_EMPH_LEVEL_0: |
3508 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_3 | DP_TRAIN_PRE_EMPH_LEVEL_0: |
||
2330 | Serge | 3509 | return EDP_LINK_TRAIN_800_1200MV_0DB_SNB_B; |
3510 | default: |
||
3511 | DRM_DEBUG_KMS("Unsupported voltage swing/pre-emphasis level:" |
||
3512 | "0x%x\n", signal_levels); |
||
3513 | return EDP_LINK_TRAIN_400_600MV_0DB_SNB_B; |
||
3514 | } |
||
3515 | } |
||
3516 | |||
2342 | Serge | 3517 | /* Gen7's DP voltage swing and pre-emphasis control */ |
3518 | static uint32_t |
||
6084 | serge | 3519 | gen7_edp_signal_levels(uint8_t train_set) |
2342 | Serge | 3520 | { |
3521 | int signal_levels = train_set & (DP_TRAIN_VOLTAGE_SWING_MASK | |
||
3522 | DP_TRAIN_PRE_EMPHASIS_MASK); |
||
3523 | switch (signal_levels) { |
||
5354 | serge | 3524 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_0: |
2342 | Serge | 3525 | return EDP_LINK_TRAIN_400MV_0DB_IVB; |
5354 | serge | 3526 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_1: |
2342 | Serge | 3527 | return EDP_LINK_TRAIN_400MV_3_5DB_IVB; |
5354 | serge | 3528 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_2: |
2342 | Serge | 3529 | return EDP_LINK_TRAIN_400MV_6DB_IVB; |
3530 | |||
5354 | serge | 3531 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1 | DP_TRAIN_PRE_EMPH_LEVEL_0: |
2342 | Serge | 3532 | return EDP_LINK_TRAIN_600MV_0DB_IVB; |
5354 | serge | 3533 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1 | DP_TRAIN_PRE_EMPH_LEVEL_1: |
2342 | Serge | 3534 | return EDP_LINK_TRAIN_600MV_3_5DB_IVB; |
3535 | |||
5354 | serge | 3536 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2 | DP_TRAIN_PRE_EMPH_LEVEL_0: |
2342 | Serge | 3537 | return EDP_LINK_TRAIN_800MV_0DB_IVB; |
5354 | serge | 3538 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2 | DP_TRAIN_PRE_EMPH_LEVEL_1: |
2342 | Serge | 3539 | return EDP_LINK_TRAIN_800MV_3_5DB_IVB; |
3540 | |||
3541 | default: |
||
3542 | DRM_DEBUG_KMS("Unsupported voltage swing/pre-emphasis level:" |
||
3543 | "0x%x\n", signal_levels); |
||
3544 | return EDP_LINK_TRAIN_500MV_0DB_IVB; |
||
3545 | } |
||
3546 | } |
||
3547 | |||
3480 | Serge | 3548 | /* Properly updates "DP" with the correct signal levels. */ |
3549 | static void |
||
3550 | intel_dp_set_signal_levels(struct intel_dp *intel_dp, uint32_t *DP) |
||
3551 | { |
||
3552 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
||
4104 | Serge | 3553 | enum port port = intel_dig_port->port; |
3480 | Serge | 3554 | struct drm_device *dev = intel_dig_port->base.base.dev; |
6084 | serge | 3555 | uint32_t signal_levels, mask = 0; |
3480 | Serge | 3556 | uint8_t train_set = intel_dp->train_set[0]; |
3557 | |||
6084 | serge | 3558 | if (HAS_DDI(dev)) { |
3559 | signal_levels = ddi_signal_levels(intel_dp); |
||
3560 | |||
3561 | if (IS_BROXTON(dev)) |
||
3562 | signal_levels = 0; |
||
3563 | else |
||
3564 | mask = DDI_BUF_EMP_MASK; |
||
5060 | serge | 3565 | } else if (IS_CHERRYVIEW(dev)) { |
6084 | serge | 3566 | signal_levels = chv_signal_levels(intel_dp); |
4104 | Serge | 3567 | } else if (IS_VALLEYVIEW(dev)) { |
6084 | serge | 3568 | signal_levels = vlv_signal_levels(intel_dp); |
4104 | Serge | 3569 | } else if (IS_GEN7(dev) && port == PORT_A) { |
6084 | serge | 3570 | signal_levels = gen7_edp_signal_levels(train_set); |
3480 | Serge | 3571 | mask = EDP_LINK_TRAIN_VOL_EMP_MASK_IVB; |
4104 | Serge | 3572 | } else if (IS_GEN6(dev) && port == PORT_A) { |
6084 | serge | 3573 | signal_levels = gen6_edp_signal_levels(train_set); |
3480 | Serge | 3574 | mask = EDP_LINK_TRAIN_VOL_EMP_MASK_SNB; |
3575 | } else { |
||
6084 | serge | 3576 | signal_levels = gen4_signal_levels(train_set); |
3480 | Serge | 3577 | mask = DP_VOLTAGE_MASK | DP_PRE_EMPHASIS_MASK; |
3578 | } |
||
3579 | |||
6084 | serge | 3580 | if (mask) |
3581 | DRM_DEBUG_KMS("Using signal levels %08x\n", signal_levels); |
||
3480 | Serge | 3582 | |
6084 | serge | 3583 | DRM_DEBUG_KMS("Using vswing level %d\n", |
3584 | train_set & DP_TRAIN_VOLTAGE_SWING_MASK); |
||
3585 | DRM_DEBUG_KMS("Using pre-emphasis level %d\n", |
||
3586 | (train_set & DP_TRAIN_PRE_EMPHASIS_MASK) >> |
||
3587 | DP_TRAIN_PRE_EMPHASIS_SHIFT); |
||
3588 | |||
3480 | Serge | 3589 | *DP = (*DP & ~mask) | signal_levels; |
3590 | } |
||
3591 | |||
2330 | Serge | 3592 | static bool |
3593 | intel_dp_set_link_train(struct intel_dp *intel_dp, |
||
4560 | Serge | 3594 | uint32_t *DP, |
2330 | Serge | 3595 | uint8_t dp_train_pat) |
3596 | { |
||
3243 | Serge | 3597 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
6084 | serge | 3598 | struct drm_i915_private *dev_priv = |
3599 | to_i915(intel_dig_port->base.base.dev); |
||
4560 | Serge | 3600 | uint8_t buf[sizeof(intel_dp->train_set) + 1]; |
3601 | int ret, len; |
||
2330 | Serge | 3602 | |
5354 | serge | 3603 | _intel_dp_set_link_train(intel_dp, DP, dp_train_pat); |
3243 | Serge | 3604 | |
4560 | Serge | 3605 | I915_WRITE(intel_dp->output_reg, *DP); |
2330 | Serge | 3606 | POSTING_READ(intel_dp->output_reg); |
3607 | |||
4560 | Serge | 3608 | buf[0] = dp_train_pat; |
3609 | if ((dp_train_pat & DP_TRAINING_PATTERN_MASK) == |
||
3610 | DP_TRAINING_PATTERN_DISABLE) { |
||
3611 | /* don't write DP_TRAINING_LANEx_SET on disable */ |
||
3612 | len = 1; |
||
3613 | } else { |
||
3614 | /* DP_TRAINING_LANEx_SET follow DP_TRAINING_PATTERN_SET */ |
||
3615 | memcpy(buf + 1, intel_dp->train_set, intel_dp->lane_count); |
||
3616 | len = intel_dp->lane_count + 1; |
||
3617 | } |
||
2330 | Serge | 3618 | |
5060 | serge | 3619 | ret = drm_dp_dpcd_write(&intel_dp->aux, DP_TRAINING_PATTERN_SET, |
6084 | serge | 3620 | buf, len); |
4560 | Serge | 3621 | |
3622 | return ret == len; |
||
3623 | } |
||
3624 | |||
3625 | static bool |
||
3626 | intel_dp_reset_link_train(struct intel_dp *intel_dp, uint32_t *DP, |
||
3627 | uint8_t dp_train_pat) |
||
3628 | { |
||
6084 | serge | 3629 | memset(intel_dp->train_set, 0, sizeof(intel_dp->train_set)); |
4560 | Serge | 3630 | intel_dp_set_signal_levels(intel_dp, DP); |
3631 | return intel_dp_set_link_train(intel_dp, DP, dp_train_pat); |
||
3632 | } |
||
3633 | |||
3634 | static bool |
||
3635 | intel_dp_update_link_train(struct intel_dp *intel_dp, uint32_t *DP, |
||
3636 | const uint8_t link_status[DP_LINK_STATUS_SIZE]) |
||
3637 | { |
||
3638 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
||
6084 | serge | 3639 | struct drm_i915_private *dev_priv = |
3640 | to_i915(intel_dig_port->base.base.dev); |
||
4560 | Serge | 3641 | int ret; |
3642 | |||
3643 | intel_get_adjust_train(intel_dp, link_status); |
||
3644 | intel_dp_set_signal_levels(intel_dp, DP); |
||
3645 | |||
3646 | I915_WRITE(intel_dp->output_reg, *DP); |
||
3647 | POSTING_READ(intel_dp->output_reg); |
||
3648 | |||
5060 | serge | 3649 | ret = drm_dp_dpcd_write(&intel_dp->aux, DP_TRAINING_LANE0_SET, |
3650 | intel_dp->train_set, intel_dp->lane_count); |
||
2330 | Serge | 3651 | |
4560 | Serge | 3652 | return ret == intel_dp->lane_count; |
2330 | Serge | 3653 | } |
3654 | |||
3746 | Serge | 3655 | static void intel_dp_set_idle_link_train(struct intel_dp *intel_dp) |
3656 | { |
||
3657 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
||
3658 | struct drm_device *dev = intel_dig_port->base.base.dev; |
||
3659 | struct drm_i915_private *dev_priv = dev->dev_private; |
||
3660 | enum port port = intel_dig_port->port; |
||
3661 | uint32_t val; |
||
3662 | |||
3663 | if (!HAS_DDI(dev)) |
||
3664 | return; |
||
3665 | |||
3666 | val = I915_READ(DP_TP_CTL(port)); |
||
3667 | val &= ~DP_TP_CTL_LINK_TRAIN_MASK; |
||
3668 | val |= DP_TP_CTL_LINK_TRAIN_IDLE; |
||
3669 | I915_WRITE(DP_TP_CTL(port), val); |
||
3670 | |||
3671 | /* |
||
3672 | * On PORT_A we can have only eDP in SST mode. There the only reason |
||
3673 | * we need to set idle transmission mode is to work around a HW issue |
||
3674 | * where we enable the pipe while not in idle link-training mode. |
||
3675 | * In this case there is requirement to wait for a minimum number of |
||
3676 | * idle patterns to be sent. |
||
3677 | */ |
||
3678 | if (port == PORT_A) |
||
3679 | return; |
||
3680 | |||
3681 | if (wait_for((I915_READ(DP_TP_STATUS(port)) & DP_TP_STATUS_IDLE_DONE), |
||
3682 | 1)) |
||
3683 | DRM_ERROR("Timed out waiting for DP idle patterns\n"); |
||
3684 | } |
||
3685 | |||
2330 | Serge | 3686 | /* Enable corresponding port and start training pattern 1 */ |
6084 | serge | 3687 | static void |
3688 | intel_dp_link_training_clock_recovery(struct intel_dp *intel_dp) |
||
2330 | Serge | 3689 | { |
3243 | Serge | 3690 | struct drm_encoder *encoder = &dp_to_dig_port(intel_dp)->base.base; |
3691 | struct drm_device *dev = encoder->dev; |
||
2330 | Serge | 3692 | int i; |
3693 | uint8_t voltage; |
||
2342 | Serge | 3694 | int voltage_tries, loop_tries; |
2330 | Serge | 3695 | uint32_t DP = intel_dp->DP; |
4560 | Serge | 3696 | uint8_t link_config[2]; |
6084 | serge | 3697 | uint8_t link_bw, rate_select; |
2330 | Serge | 3698 | |
3480 | Serge | 3699 | if (HAS_DDI(dev)) |
3243 | Serge | 3700 | intel_ddi_prepare_link_retrain(encoder); |
3701 | |||
6084 | serge | 3702 | intel_dp_compute_rate(intel_dp, intel_dp->link_rate, |
3703 | &link_bw, &rate_select); |
||
3704 | |||
2330 | Serge | 3705 | /* Write the link configuration data */ |
6084 | serge | 3706 | link_config[0] = link_bw; |
4560 | Serge | 3707 | link_config[1] = intel_dp->lane_count; |
3708 | if (drm_dp_enhanced_frame_cap(intel_dp->dpcd)) |
||
3709 | link_config[1] |= DP_LANE_COUNT_ENHANCED_FRAME_EN; |
||
5060 | serge | 3710 | drm_dp_dpcd_write(&intel_dp->aux, DP_LINK_BW_SET, link_config, 2); |
6084 | serge | 3711 | if (intel_dp->num_sink_rates) |
3712 | drm_dp_dpcd_write(&intel_dp->aux, DP_LINK_RATE_SET, |
||
3713 | &rate_select, 1); |
||
2330 | Serge | 3714 | |
4560 | Serge | 3715 | link_config[0] = 0; |
3716 | link_config[1] = DP_SET_ANSI_8B10B; |
||
5060 | serge | 3717 | drm_dp_dpcd_write(&intel_dp->aux, DP_DOWNSPREAD_CTRL, link_config, 2); |
4560 | Serge | 3718 | |
2330 | Serge | 3719 | DP |= DP_PORT_EN; |
2342 | Serge | 3720 | |
4560 | Serge | 3721 | /* clock recovery */ |
3722 | if (!intel_dp_reset_link_train(intel_dp, &DP, |
||
3723 | DP_TRAINING_PATTERN_1 | |
||
3724 | DP_LINK_SCRAMBLING_DISABLE)) { |
||
3725 | DRM_ERROR("failed to enable link training\n"); |
||
3726 | return; |
||
3727 | } |
||
3728 | |||
2330 | Serge | 3729 | voltage = 0xff; |
2342 | Serge | 3730 | voltage_tries = 0; |
3731 | loop_tries = 0; |
||
2330 | Serge | 3732 | for (;;) { |
6084 | serge | 3733 | uint8_t link_status[DP_LINK_STATUS_SIZE]; |
2342 | Serge | 3734 | |
3243 | Serge | 3735 | drm_dp_link_train_clock_recovery_delay(intel_dp->dpcd); |
2342 | Serge | 3736 | if (!intel_dp_get_link_status(intel_dp, link_status)) { |
3737 | DRM_ERROR("failed to get link status\n"); |
||
2330 | Serge | 3738 | break; |
2342 | Serge | 3739 | } |
2330 | Serge | 3740 | |
3243 | Serge | 3741 | if (drm_dp_clock_recovery_ok(link_status, intel_dp->lane_count)) { |
2342 | Serge | 3742 | DRM_DEBUG_KMS("clock recovery OK\n"); |
2330 | Serge | 3743 | break; |
3744 | } |
||
3745 | |||
6084 | serge | 3746 | |
2330 | Serge | 3747 | /* Check to see if we've tried the max voltage */ |
3748 | for (i = 0; i < intel_dp->lane_count; i++) |
||
3749 | if ((intel_dp->train_set[i] & DP_TRAIN_MAX_SWING_REACHED) == 0) |
||
3750 | break; |
||
3480 | Serge | 3751 | if (i == intel_dp->lane_count) { |
2342 | Serge | 3752 | ++loop_tries; |
3753 | if (loop_tries == 5) { |
||
4560 | Serge | 3754 | DRM_ERROR("too many full retries, give up\n"); |
6084 | serge | 3755 | break; |
2342 | Serge | 3756 | } |
4560 | Serge | 3757 | intel_dp_reset_link_train(intel_dp, &DP, |
3758 | DP_TRAINING_PATTERN_1 | |
||
3759 | DP_LINK_SCRAMBLING_DISABLE); |
||
2342 | Serge | 3760 | voltage_tries = 0; |
3761 | continue; |
||
3762 | } |
||
2330 | Serge | 3763 | |
3764 | /* Check to see if we've tried the same voltage 5 times */ |
||
3765 | if ((intel_dp->train_set[0] & DP_TRAIN_VOLTAGE_SWING_MASK) == voltage) { |
||
2342 | Serge | 3766 | ++voltage_tries; |
3767 | if (voltage_tries == 5) { |
||
4560 | Serge | 3768 | DRM_ERROR("too many voltage retries, give up\n"); |
2330 | Serge | 3769 | break; |
2342 | Serge | 3770 | } |
2330 | Serge | 3771 | } else |
2342 | Serge | 3772 | voltage_tries = 0; |
2330 | Serge | 3773 | voltage = intel_dp->train_set[0] & DP_TRAIN_VOLTAGE_SWING_MASK; |
3774 | |||
4560 | Serge | 3775 | /* Update training set as requested by target */ |
3776 | if (!intel_dp_update_link_train(intel_dp, &DP, link_status)) { |
||
3777 | DRM_ERROR("failed to update link training\n"); |
||
3778 | break; |
||
3779 | } |
||
2330 | Serge | 3780 | } |
3781 | |||
3782 | intel_dp->DP = DP; |
||
3783 | } |
||
3784 | |||
6084 | serge | 3785 | static void |
3786 | intel_dp_link_training_channel_equalization(struct intel_dp *intel_dp) |
||
2330 | Serge | 3787 | { |
6084 | serge | 3788 | struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp); |
3789 | struct drm_device *dev = dig_port->base.base.dev; |
||
2330 | Serge | 3790 | bool channel_eq = false; |
3791 | int tries, cr_tries; |
||
3792 | uint32_t DP = intel_dp->DP; |
||
5060 | serge | 3793 | uint32_t training_pattern = DP_TRAINING_PATTERN_2; |
2330 | Serge | 3794 | |
6084 | serge | 3795 | /* |
3796 | * Training Pattern 3 for HBR2 or 1.2 devices that support it. |
||
3797 | * |
||
3798 | * Intel platforms that support HBR2 also support TPS3. TPS3 support is |
||
3799 | * also mandatory for downstream devices that support HBR2. |
||
3800 | * |
||
3801 | * Due to WaDisableHBR2 SKL < B0 is the only exception where TPS3 is |
||
3802 | * supported but still not enabled. |
||
3803 | */ |
||
3804 | if (intel_dp_source_supports_hbr2(dev) && |
||
3805 | drm_dp_tps3_supported(intel_dp->dpcd)) |
||
5060 | serge | 3806 | training_pattern = DP_TRAINING_PATTERN_3; |
6084 | serge | 3807 | else if (intel_dp->link_rate == 540000) |
3808 | DRM_ERROR("5.4 Gbps link rate without HBR2/TPS3 support\n"); |
||
5060 | serge | 3809 | |
2330 | Serge | 3810 | /* channel equalization */ |
4560 | Serge | 3811 | if (!intel_dp_set_link_train(intel_dp, &DP, |
5060 | serge | 3812 | training_pattern | |
4560 | Serge | 3813 | DP_LINK_SCRAMBLING_DISABLE)) { |
3814 | DRM_ERROR("failed to start channel equalization\n"); |
||
3815 | return; |
||
3816 | } |
||
3817 | |||
2330 | Serge | 3818 | tries = 0; |
3819 | cr_tries = 0; |
||
3820 | channel_eq = false; |
||
3821 | for (;;) { |
||
6084 | serge | 3822 | uint8_t link_status[DP_LINK_STATUS_SIZE]; |
2330 | Serge | 3823 | |
3824 | if (cr_tries > 5) { |
||
3825 | DRM_ERROR("failed to train DP, aborting\n"); |
||
3826 | break; |
||
3827 | } |
||
3828 | |||
3243 | Serge | 3829 | drm_dp_link_train_channel_eq_delay(intel_dp->dpcd); |
4560 | Serge | 3830 | if (!intel_dp_get_link_status(intel_dp, link_status)) { |
3831 | DRM_ERROR("failed to get link status\n"); |
||
2330 | Serge | 3832 | break; |
4560 | Serge | 3833 | } |
2330 | Serge | 3834 | |
3835 | /* Make sure clock is still ok */ |
||
6084 | serge | 3836 | if (!drm_dp_clock_recovery_ok(link_status, |
3837 | intel_dp->lane_count)) { |
||
3838 | intel_dp_link_training_clock_recovery(intel_dp); |
||
4560 | Serge | 3839 | intel_dp_set_link_train(intel_dp, &DP, |
5060 | serge | 3840 | training_pattern | |
4560 | Serge | 3841 | DP_LINK_SCRAMBLING_DISABLE); |
2330 | Serge | 3842 | cr_tries++; |
3843 | continue; |
||
3844 | } |
||
3845 | |||
6084 | serge | 3846 | if (drm_dp_channel_eq_ok(link_status, |
3847 | intel_dp->lane_count)) { |
||
2330 | Serge | 3848 | channel_eq = true; |
3849 | break; |
||
3850 | } |
||
3851 | |||
3852 | /* Try 5 times, then try clock recovery if that fails */ |
||
3853 | if (tries > 5) { |
||
6084 | serge | 3854 | intel_dp_link_training_clock_recovery(intel_dp); |
4560 | Serge | 3855 | intel_dp_set_link_train(intel_dp, &DP, |
5060 | serge | 3856 | training_pattern | |
4560 | Serge | 3857 | DP_LINK_SCRAMBLING_DISABLE); |
2330 | Serge | 3858 | tries = 0; |
3859 | cr_tries++; |
||
3860 | continue; |
||
3861 | } |
||
3862 | |||
4560 | Serge | 3863 | /* Update training set as requested by target */ |
3864 | if (!intel_dp_update_link_train(intel_dp, &DP, link_status)) { |
||
3865 | DRM_ERROR("failed to update link training\n"); |
||
3866 | break; |
||
3867 | } |
||
2330 | Serge | 3868 | ++tries; |
3869 | } |
||
3870 | |||
3746 | Serge | 3871 | intel_dp_set_idle_link_train(intel_dp); |
3872 | |||
3873 | intel_dp->DP = DP; |
||
3874 | |||
6660 | serge | 3875 | if (channel_eq) |
3746 | Serge | 3876 | DRM_DEBUG_KMS("Channel EQ done. DP Training successful\n"); |
6084 | serge | 3877 | } |
2330 | Serge | 3878 | |
3746 | Serge | 3879 | void intel_dp_stop_link_train(struct intel_dp *intel_dp) |
3880 | { |
||
4560 | Serge | 3881 | intel_dp_set_link_train(intel_dp, &intel_dp->DP, |
3746 | Serge | 3882 | DP_TRAINING_PATTERN_DISABLE); |
3883 | } |
||
3884 | |||
6084 | serge | 3885 | void |
3886 | intel_dp_start_link_train(struct intel_dp *intel_dp) |
||
3887 | { |
||
3888 | intel_dp_link_training_clock_recovery(intel_dp); |
||
3889 | intel_dp_link_training_channel_equalization(intel_dp); |
||
3890 | } |
||
3891 | |||
2330 | Serge | 3892 | static void |
3893 | intel_dp_link_down(struct intel_dp *intel_dp) |
||
3894 | { |
||
3243 | Serge | 3895 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
6084 | serge | 3896 | struct intel_crtc *crtc = to_intel_crtc(intel_dig_port->base.base.crtc); |
4104 | Serge | 3897 | enum port port = intel_dig_port->port; |
3243 | Serge | 3898 | struct drm_device *dev = intel_dig_port->base.base.dev; |
2330 | Serge | 3899 | struct drm_i915_private *dev_priv = dev->dev_private; |
3900 | uint32_t DP = intel_dp->DP; |
||
3901 | |||
5060 | serge | 3902 | if (WARN_ON(HAS_DDI(dev))) |
3243 | Serge | 3903 | return; |
3904 | |||
3031 | serge | 3905 | if (WARN_ON((I915_READ(intel_dp->output_reg) & DP_PORT_EN) == 0)) |
2330 | Serge | 3906 | return; |
3907 | |||
3908 | DRM_DEBUG_KMS("\n"); |
||
3909 | |||
6084 | serge | 3910 | if ((IS_GEN7(dev) && port == PORT_A) || |
3911 | (HAS_PCH_CPT(dev) && port != PORT_A)) { |
||
2330 | Serge | 3912 | DP &= ~DP_LINK_TRAIN_MASK_CPT; |
6084 | serge | 3913 | DP |= DP_LINK_TRAIN_PAT_IDLE_CPT; |
2330 | Serge | 3914 | } else { |
5354 | serge | 3915 | if (IS_CHERRYVIEW(dev)) |
3916 | DP &= ~DP_LINK_TRAIN_MASK_CHV; |
||
3917 | else |
||
6084 | serge | 3918 | DP &= ~DP_LINK_TRAIN_MASK; |
3919 | DP |= DP_LINK_TRAIN_PAT_IDLE; |
||
2330 | Serge | 3920 | } |
6084 | serge | 3921 | I915_WRITE(intel_dp->output_reg, DP); |
2330 | Serge | 3922 | POSTING_READ(intel_dp->output_reg); |
3923 | |||
6084 | serge | 3924 | DP &= ~(DP_PORT_EN | DP_AUDIO_OUTPUT_ENABLE); |
3925 | I915_WRITE(intel_dp->output_reg, DP); |
||
3926 | POSTING_READ(intel_dp->output_reg); |
||
2330 | Serge | 3927 | |
6084 | serge | 3928 | /* |
3929 | * HW workaround for IBX, we need to move the port |
||
3930 | * to transcoder A after disabling it to allow the |
||
3931 | * matching HDMI port to be enabled on transcoder A. |
||
3932 | */ |
||
3933 | if (HAS_PCH_IBX(dev) && crtc->pipe == PIPE_B && port != PORT_A) { |
||
3934 | /* always enable with pattern 1 (as per spec) */ |
||
3935 | DP &= ~(DP_PIPEB_SELECT | DP_LINK_TRAIN_MASK); |
||
3936 | DP |= DP_PORT_EN | DP_LINK_TRAIN_PAT_1; |
||
2330 | Serge | 3937 | I915_WRITE(intel_dp->output_reg, DP); |
6084 | serge | 3938 | POSTING_READ(intel_dp->output_reg); |
2330 | Serge | 3939 | |
6084 | serge | 3940 | DP &= ~DP_PORT_EN; |
3941 | I915_WRITE(intel_dp->output_reg, DP); |
||
3942 | POSTING_READ(intel_dp->output_reg); |
||
2330 | Serge | 3943 | } |
3944 | |||
2342 | Serge | 3945 | msleep(intel_dp->panel_power_down_delay); |
2330 | Serge | 3946 | } |
3947 | |||
3948 | static bool |
||
3949 | intel_dp_get_dpcd(struct intel_dp *intel_dp) |
||
3950 | { |
||
4560 | Serge | 3951 | struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp); |
3952 | struct drm_device *dev = dig_port->base.base.dev; |
||
3953 | struct drm_i915_private *dev_priv = dev->dev_private; |
||
6084 | serge | 3954 | uint8_t rev; |
4560 | Serge | 3955 | |
5060 | serge | 3956 | if (intel_dp_dpcd_read_wake(&intel_dp->aux, 0x000, intel_dp->dpcd, |
3957 | sizeof(intel_dp->dpcd)) < 0) |
||
3031 | serge | 3958 | return false; /* aux transfer failed */ |
3959 | |||
5354 | serge | 3960 | DRM_DEBUG_KMS("DPCD: %*ph\n", (int) sizeof(intel_dp->dpcd), intel_dp->dpcd); |
3480 | Serge | 3961 | |
3031 | serge | 3962 | if (intel_dp->dpcd[DP_DPCD_REV] == 0) |
3963 | return false; /* DPCD not present */ |
||
3964 | |||
4104 | Serge | 3965 | /* Check if the panel supports PSR */ |
3966 | memset(intel_dp->psr_dpcd, 0, sizeof(intel_dp->psr_dpcd)); |
||
4560 | Serge | 3967 | if (is_edp(intel_dp)) { |
5060 | serge | 3968 | intel_dp_dpcd_read_wake(&intel_dp->aux, DP_PSR_SUPPORT, |
6084 | serge | 3969 | intel_dp->psr_dpcd, |
3970 | sizeof(intel_dp->psr_dpcd)); |
||
4560 | Serge | 3971 | if (intel_dp->psr_dpcd[0] & DP_PSR_IS_SUPPORTED) { |
3972 | dev_priv->psr.sink_support = true; |
||
6084 | serge | 3973 | DRM_DEBUG_KMS("Detected EDP PSR Panel.\n"); |
4560 | Serge | 3974 | } |
6084 | serge | 3975 | |
3976 | if (INTEL_INFO(dev)->gen >= 9 && |
||
3977 | (intel_dp->psr_dpcd[0] & DP_PSR2_IS_SUPPORTED)) { |
||
3978 | uint8_t frame_sync_cap; |
||
3979 | |||
3980 | dev_priv->psr.sink_support = true; |
||
3981 | intel_dp_dpcd_read_wake(&intel_dp->aux, |
||
3982 | DP_SINK_DEVICE_AUX_FRAME_SYNC_CAP, |
||
3983 | &frame_sync_cap, 1); |
||
3984 | dev_priv->psr.aux_frame_sync = frame_sync_cap ? true : false; |
||
3985 | /* PSR2 needs frame sync as well */ |
||
3986 | dev_priv->psr.psr2_support = dev_priv->psr.aux_frame_sync; |
||
3987 | DRM_DEBUG_KMS("PSR2 %s on sink", |
||
3988 | dev_priv->psr.psr2_support ? "supported" : "not supported"); |
||
3989 | } |
||
4560 | Serge | 3990 | } |
3991 | |||
6084 | serge | 3992 | DRM_DEBUG_KMS("Display Port TPS3 support: source %s, sink %s\n", |
3993 | yesno(intel_dp_source_supports_hbr2(dev)), |
||
3994 | yesno(drm_dp_tps3_supported(intel_dp->dpcd))); |
||
5060 | serge | 3995 | |
6084 | serge | 3996 | /* Intermediate frequency support */ |
3997 | if (is_edp(intel_dp) && |
||
3998 | (intel_dp->dpcd[DP_EDP_CONFIGURATION_CAP] & DP_DPCD_DISPLAY_CONTROL_CAPABLE) && |
||
3999 | (intel_dp_dpcd_read_wake(&intel_dp->aux, DP_EDP_DPCD_REV, &rev, 1) == 1) && |
||
4000 | (rev >= 0x03)) { /* eDp v1.4 or higher */ |
||
4001 | __le16 sink_rates[DP_MAX_SUPPORTED_RATES]; |
||
4002 | int i; |
||
4003 | |||
4004 | intel_dp_dpcd_read_wake(&intel_dp->aux, |
||
4005 | DP_SUPPORTED_LINK_RATES, |
||
4006 | sink_rates, |
||
4007 | sizeof(sink_rates)); |
||
4008 | |||
4009 | for (i = 0; i < ARRAY_SIZE(sink_rates); i++) { |
||
4010 | int val = le16_to_cpu(sink_rates[i]); |
||
4011 | |||
4012 | if (val == 0) |
||
4013 | break; |
||
4014 | |||
4015 | /* Value read is in kHz while drm clock is saved in deca-kHz */ |
||
4016 | intel_dp->sink_rates[i] = (val * 200) / 10; |
||
4017 | } |
||
4018 | intel_dp->num_sink_rates = i; |
||
4019 | } |
||
4020 | |||
4021 | intel_dp_print_rates(intel_dp); |
||
4022 | |||
3031 | serge | 4023 | if (!(intel_dp->dpcd[DP_DOWNSTREAMPORT_PRESENT] & |
4024 | DP_DWN_STRM_PORT_PRESENT)) |
||
4025 | return true; /* native DP sink */ |
||
4026 | |||
4027 | if (intel_dp->dpcd[DP_DPCD_REV] == 0x10) |
||
4028 | return true; /* no per-port downstream info */ |
||
4029 | |||
5060 | serge | 4030 | if (intel_dp_dpcd_read_wake(&intel_dp->aux, DP_DOWNSTREAM_PORT_0, |
6084 | serge | 4031 | intel_dp->downstream_ports, |
5060 | serge | 4032 | DP_MAX_DOWNSTREAM_PORTS) < 0) |
3031 | serge | 4033 | return false; /* downstream port status fetch failed */ |
4034 | |||
6084 | serge | 4035 | return true; |
3031 | serge | 4036 | } |
2330 | Serge | 4037 | |
3031 | serge | 4038 | static void |
4039 | intel_dp_probe_oui(struct intel_dp *intel_dp) |
||
4040 | { |
||
4041 | u8 buf[3]; |
||
4042 | |||
4043 | if (!(intel_dp->dpcd[DP_DOWN_STREAM_PORT_COUNT] & DP_OUI_SUPPORT)) |
||
4044 | return; |
||
4045 | |||
5060 | serge | 4046 | if (intel_dp_dpcd_read_wake(&intel_dp->aux, DP_SINK_OUI, buf, 3) == 3) |
3031 | serge | 4047 | DRM_DEBUG_KMS("Sink OUI: %02hx%02hx%02hx\n", |
4048 | buf[0], buf[1], buf[2]); |
||
4049 | |||
5060 | serge | 4050 | if (intel_dp_dpcd_read_wake(&intel_dp->aux, DP_BRANCH_OUI, buf, 3) == 3) |
3031 | serge | 4051 | DRM_DEBUG_KMS("Branch OUI: %02hx%02hx%02hx\n", |
4052 | buf[0], buf[1], buf[2]); |
||
2330 | Serge | 4053 | } |
4054 | |||
2342 | Serge | 4055 | static bool |
5060 | serge | 4056 | intel_dp_probe_mst(struct intel_dp *intel_dp) |
4057 | { |
||
4058 | u8 buf[1]; |
||
4059 | |||
4060 | if (!intel_dp->can_mst) |
||
4061 | return false; |
||
4062 | |||
4063 | if (intel_dp->dpcd[DP_DPCD_REV] < 0x12) |
||
4064 | return false; |
||
4065 | |||
4066 | if (intel_dp_dpcd_read_wake(&intel_dp->aux, DP_MSTM_CAP, buf, 1)) { |
||
4067 | if (buf[0] & DP_MST_CAP) { |
||
4068 | DRM_DEBUG_KMS("Sink is MST capable\n"); |
||
4069 | intel_dp->is_mst = true; |
||
4070 | } else { |
||
4071 | DRM_DEBUG_KMS("Sink is not MST capable\n"); |
||
4072 | intel_dp->is_mst = false; |
||
4073 | } |
||
4074 | } |
||
4075 | |||
4076 | drm_dp_mst_topology_mgr_set_mst(&intel_dp->mst_mgr, intel_dp->is_mst); |
||
4077 | return intel_dp->is_mst; |
||
4078 | } |
||
4079 | |||
6084 | serge | 4080 | static int intel_dp_sink_crc_stop(struct intel_dp *intel_dp) |
5060 | serge | 4081 | { |
6084 | serge | 4082 | struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp); |
4083 | struct intel_crtc *intel_crtc = to_intel_crtc(dig_port->base.base.crtc); |
||
5354 | serge | 4084 | u8 buf; |
6084 | serge | 4085 | int ret = 0; |
5060 | serge | 4086 | |
6084 | serge | 4087 | if (drm_dp_dpcd_readb(&intel_dp->aux, DP_TEST_SINK, &buf) < 0) { |
4088 | DRM_DEBUG_KMS("Sink CRC couldn't be stopped properly\n"); |
||
4089 | ret = -EIO; |
||
4090 | goto out; |
||
4091 | } |
||
4092 | |||
4093 | if (drm_dp_dpcd_writeb(&intel_dp->aux, DP_TEST_SINK, |
||
4094 | buf & ~DP_TEST_SINK_START) < 0) { |
||
4095 | DRM_DEBUG_KMS("Sink CRC couldn't be stopped properly\n"); |
||
4096 | ret = -EIO; |
||
4097 | goto out; |
||
4098 | } |
||
4099 | |||
4100 | intel_dp->sink_crc.started = false; |
||
4101 | out: |
||
4102 | hsw_enable_ips(intel_crtc); |
||
4103 | return ret; |
||
4104 | } |
||
4105 | |||
4106 | static int intel_dp_sink_crc_start(struct intel_dp *intel_dp) |
||
4107 | { |
||
4108 | struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp); |
||
4109 | struct intel_crtc *intel_crtc = to_intel_crtc(dig_port->base.base.crtc); |
||
4110 | u8 buf; |
||
4111 | int ret; |
||
4112 | |||
4113 | if (intel_dp->sink_crc.started) { |
||
4114 | ret = intel_dp_sink_crc_stop(intel_dp); |
||
4115 | if (ret) |
||
4116 | return ret; |
||
4117 | } |
||
4118 | |||
5354 | serge | 4119 | if (drm_dp_dpcd_readb(&intel_dp->aux, DP_TEST_SINK_MISC, &buf) < 0) |
4120 | return -EIO; |
||
5060 | serge | 4121 | |
5354 | serge | 4122 | if (!(buf & DP_TEST_CRC_SUPPORTED)) |
5060 | serge | 4123 | return -ENOTTY; |
4124 | |||
6084 | serge | 4125 | intel_dp->sink_crc.last_count = buf & DP_TEST_COUNT_MASK; |
4126 | |||
5354 | serge | 4127 | if (drm_dp_dpcd_readb(&intel_dp->aux, DP_TEST_SINK, &buf) < 0) |
4128 | return -EIO; |
||
4129 | |||
6084 | serge | 4130 | hsw_disable_ips(intel_crtc); |
4131 | |||
5060 | serge | 4132 | if (drm_dp_dpcd_writeb(&intel_dp->aux, DP_TEST_SINK, |
6084 | serge | 4133 | buf | DP_TEST_SINK_START) < 0) { |
4134 | hsw_enable_ips(intel_crtc); |
||
5354 | serge | 4135 | return -EIO; |
6084 | serge | 4136 | } |
5060 | serge | 4137 | |
6084 | serge | 4138 | intel_dp->sink_crc.started = true; |
4139 | return 0; |
||
4140 | } |
||
5354 | serge | 4141 | |
6084 | serge | 4142 | int intel_dp_sink_crc(struct intel_dp *intel_dp, u8 *crc) |
4143 | { |
||
4144 | struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp); |
||
4145 | struct drm_device *dev = dig_port->base.base.dev; |
||
4146 | struct intel_crtc *intel_crtc = to_intel_crtc(dig_port->base.base.crtc); |
||
4147 | u8 buf; |
||
4148 | int count, ret; |
||
4149 | int attempts = 6; |
||
4150 | bool old_equal_new; |
||
4151 | |||
4152 | ret = intel_dp_sink_crc_start(intel_dp); |
||
4153 | if (ret) |
||
4154 | return ret; |
||
4155 | |||
5354 | serge | 4156 | do { |
6084 | serge | 4157 | intel_wait_for_vblank(dev, intel_crtc->pipe); |
4158 | |||
5354 | serge | 4159 | if (drm_dp_dpcd_readb(&intel_dp->aux, |
6084 | serge | 4160 | DP_TEST_SINK_MISC, &buf) < 0) { |
4161 | ret = -EIO; |
||
4162 | goto stop; |
||
4163 | } |
||
4164 | count = buf & DP_TEST_COUNT_MASK; |
||
5060 | serge | 4165 | |
6084 | serge | 4166 | /* |
4167 | * Count might be reset during the loop. In this case |
||
4168 | * last known count needs to be reset as well. |
||
4169 | */ |
||
4170 | if (count == 0) |
||
4171 | intel_dp->sink_crc.last_count = 0; |
||
4172 | |||
4173 | if (drm_dp_dpcd_read(&intel_dp->aux, DP_TEST_CRC_R_CR, crc, 6) < 0) { |
||
4174 | ret = -EIO; |
||
4175 | goto stop; |
||
4176 | } |
||
4177 | |||
4178 | old_equal_new = (count == intel_dp->sink_crc.last_count && |
||
4179 | !memcmp(intel_dp->sink_crc.last_crc, crc, |
||
4180 | 6 * sizeof(u8))); |
||
4181 | |||
4182 | } while (--attempts && (count == 0 || old_equal_new)); |
||
4183 | |||
4184 | intel_dp->sink_crc.last_count = buf & DP_TEST_COUNT_MASK; |
||
4185 | memcpy(intel_dp->sink_crc.last_crc, crc, 6 * sizeof(u8)); |
||
4186 | |||
5354 | serge | 4187 | if (attempts == 0) { |
6084 | serge | 4188 | if (old_equal_new) { |
4189 | DRM_DEBUG_KMS("Unreliable Sink CRC counter: Current returned CRC is identical to the previous one\n"); |
||
4190 | } else { |
||
4191 | DRM_ERROR("Panel is unable to calculate any CRC after 6 vblanks\n"); |
||
4192 | ret = -ETIMEDOUT; |
||
4193 | goto stop; |
||
4194 | } |
||
5354 | serge | 4195 | } |
4196 | |||
6084 | serge | 4197 | stop: |
4198 | intel_dp_sink_crc_stop(intel_dp); |
||
4199 | return ret; |
||
5060 | serge | 4200 | } |
4201 | |||
4202 | static bool |
||
2342 | Serge | 4203 | intel_dp_get_sink_irq(struct intel_dp *intel_dp, u8 *sink_irq_vector) |
4204 | { |
||
5060 | serge | 4205 | return intel_dp_dpcd_read_wake(&intel_dp->aux, |
6084 | serge | 4206 | DP_DEVICE_SERVICE_IRQ_VECTOR, |
5060 | serge | 4207 | sink_irq_vector, 1) == 1; |
4208 | } |
||
4209 | |||
4210 | static bool |
||
4211 | intel_dp_get_sink_irq_esi(struct intel_dp *intel_dp, u8 *sink_irq_vector) |
||
4212 | { |
||
2342 | Serge | 4213 | int ret; |
4214 | |||
5060 | serge | 4215 | ret = intel_dp_dpcd_read_wake(&intel_dp->aux, |
4216 | DP_SINK_COUNT_ESI, |
||
4217 | sink_irq_vector, 14); |
||
4218 | if (ret != 14) |
||
2342 | Serge | 4219 | return false; |
4220 | |||
4221 | return true; |
||
4222 | } |
||
4223 | |||
6084 | serge | 4224 | static uint8_t intel_dp_autotest_link_training(struct intel_dp *intel_dp) |
2342 | Serge | 4225 | { |
6084 | serge | 4226 | uint8_t test_result = DP_TEST_ACK; |
4227 | return test_result; |
||
2342 | Serge | 4228 | } |
4229 | |||
6084 | serge | 4230 | static uint8_t intel_dp_autotest_video_pattern(struct intel_dp *intel_dp) |
4231 | { |
||
4232 | uint8_t test_result = DP_TEST_NAK; |
||
4233 | return test_result; |
||
4234 | } |
||
4235 | |||
4236 | static uint8_t intel_dp_autotest_edid(struct intel_dp *intel_dp) |
||
4237 | { |
||
4238 | uint8_t test_result = DP_TEST_NAK; |
||
4239 | struct intel_connector *intel_connector = intel_dp->attached_connector; |
||
4240 | struct drm_connector *connector = &intel_connector->base; |
||
4241 | |||
4242 | if (intel_connector->detect_edid == NULL || |
||
4243 | connector->edid_corrupt || |
||
4244 | intel_dp->aux.i2c_defer_count > 6) { |
||
4245 | /* Check EDID read for NACKs, DEFERs and corruption |
||
4246 | * (DP CTS 1.2 Core r1.1) |
||
4247 | * 4.2.2.4 : Failed EDID read, I2C_NAK |
||
4248 | * 4.2.2.5 : Failed EDID read, I2C_DEFER |
||
4249 | * 4.2.2.6 : EDID corruption detected |
||
4250 | * Use failsafe mode for all cases |
||
4251 | */ |
||
4252 | if (intel_dp->aux.i2c_nack_count > 0 || |
||
4253 | intel_dp->aux.i2c_defer_count > 0) |
||
4254 | DRM_DEBUG_KMS("EDID read had %d NACKs, %d DEFERs\n", |
||
4255 | intel_dp->aux.i2c_nack_count, |
||
4256 | intel_dp->aux.i2c_defer_count); |
||
4257 | intel_dp->compliance_test_data = INTEL_DP_RESOLUTION_FAILSAFE; |
||
4258 | } else { |
||
4259 | struct edid *block = intel_connector->detect_edid; |
||
4260 | |||
4261 | /* We have to write the checksum |
||
4262 | * of the last block read |
||
4263 | */ |
||
4264 | block += intel_connector->detect_edid->extensions; |
||
4265 | |||
4266 | if (!drm_dp_dpcd_write(&intel_dp->aux, |
||
4267 | DP_TEST_EDID_CHECKSUM, |
||
4268 | &block->checksum, |
||
4269 | 1)) |
||
4270 | DRM_DEBUG_KMS("Failed to write EDID checksum\n"); |
||
4271 | |||
4272 | test_result = DP_TEST_ACK | DP_TEST_EDID_CHECKSUM_WRITE; |
||
4273 | intel_dp->compliance_test_data = INTEL_DP_RESOLUTION_STANDARD; |
||
4274 | } |
||
4275 | |||
4276 | /* Set test active flag here so userspace doesn't interrupt things */ |
||
4277 | intel_dp->compliance_test_active = 1; |
||
4278 | |||
4279 | return test_result; |
||
4280 | } |
||
4281 | |||
4282 | static uint8_t intel_dp_autotest_phy_pattern(struct intel_dp *intel_dp) |
||
4283 | { |
||
4284 | uint8_t test_result = DP_TEST_NAK; |
||
4285 | return test_result; |
||
4286 | } |
||
4287 | |||
4288 | static void intel_dp_handle_test_request(struct intel_dp *intel_dp) |
||
4289 | { |
||
4290 | uint8_t response = DP_TEST_NAK; |
||
4291 | uint8_t rxdata = 0; |
||
4292 | int status = 0; |
||
4293 | |||
4294 | intel_dp->compliance_test_active = 0; |
||
4295 | intel_dp->compliance_test_type = 0; |
||
4296 | intel_dp->compliance_test_data = 0; |
||
4297 | |||
4298 | intel_dp->aux.i2c_nack_count = 0; |
||
4299 | intel_dp->aux.i2c_defer_count = 0; |
||
4300 | |||
4301 | status = drm_dp_dpcd_read(&intel_dp->aux, DP_TEST_REQUEST, &rxdata, 1); |
||
4302 | if (status <= 0) { |
||
4303 | DRM_DEBUG_KMS("Could not read test request from sink\n"); |
||
4304 | goto update_status; |
||
4305 | } |
||
4306 | |||
4307 | switch (rxdata) { |
||
4308 | case DP_TEST_LINK_TRAINING: |
||
4309 | DRM_DEBUG_KMS("LINK_TRAINING test requested\n"); |
||
4310 | intel_dp->compliance_test_type = DP_TEST_LINK_TRAINING; |
||
4311 | response = intel_dp_autotest_link_training(intel_dp); |
||
4312 | break; |
||
4313 | case DP_TEST_LINK_VIDEO_PATTERN: |
||
4314 | DRM_DEBUG_KMS("TEST_PATTERN test requested\n"); |
||
4315 | intel_dp->compliance_test_type = DP_TEST_LINK_VIDEO_PATTERN; |
||
4316 | response = intel_dp_autotest_video_pattern(intel_dp); |
||
4317 | break; |
||
4318 | case DP_TEST_LINK_EDID_READ: |
||
4319 | DRM_DEBUG_KMS("EDID test requested\n"); |
||
4320 | intel_dp->compliance_test_type = DP_TEST_LINK_EDID_READ; |
||
4321 | response = intel_dp_autotest_edid(intel_dp); |
||
4322 | break; |
||
4323 | case DP_TEST_LINK_PHY_TEST_PATTERN: |
||
4324 | DRM_DEBUG_KMS("PHY_PATTERN test requested\n"); |
||
4325 | intel_dp->compliance_test_type = DP_TEST_LINK_PHY_TEST_PATTERN; |
||
4326 | response = intel_dp_autotest_phy_pattern(intel_dp); |
||
4327 | break; |
||
4328 | default: |
||
4329 | DRM_DEBUG_KMS("Invalid test request '%02x'\n", rxdata); |
||
4330 | break; |
||
4331 | } |
||
4332 | |||
4333 | update_status: |
||
4334 | status = drm_dp_dpcd_write(&intel_dp->aux, |
||
4335 | DP_TEST_RESPONSE, |
||
4336 | &response, 1); |
||
4337 | if (status <= 0) |
||
4338 | DRM_DEBUG_KMS("Could not write test response to sink\n"); |
||
4339 | } |
||
4340 | |||
5060 | serge | 4341 | static int |
4342 | intel_dp_check_mst_status(struct intel_dp *intel_dp) |
||
4343 | { |
||
4344 | bool bret; |
||
4345 | |||
4346 | if (intel_dp->is_mst) { |
||
4347 | u8 esi[16] = { 0 }; |
||
4348 | int ret = 0; |
||
4349 | int retry; |
||
4350 | bool handled; |
||
4351 | bret = intel_dp_get_sink_irq_esi(intel_dp, esi); |
||
4352 | go_again: |
||
4353 | if (bret == true) { |
||
4354 | |||
4355 | /* check link status - esi[10] = 0x200c */ |
||
6084 | serge | 4356 | if (intel_dp->active_mst_links && |
4357 | !drm_dp_channel_eq_ok(&esi[10], intel_dp->lane_count)) { |
||
5060 | serge | 4358 | DRM_DEBUG_KMS("channel EQ not ok, retraining\n"); |
4359 | intel_dp_start_link_train(intel_dp); |
||
4360 | intel_dp_stop_link_train(intel_dp); |
||
4361 | } |
||
4362 | |||
6084 | serge | 4363 | DRM_DEBUG_KMS("got esi %3ph\n", esi); |
5060 | serge | 4364 | ret = drm_dp_mst_hpd_irq(&intel_dp->mst_mgr, esi, &handled); |
4365 | |||
4366 | if (handled) { |
||
4367 | for (retry = 0; retry < 3; retry++) { |
||
4368 | int wret; |
||
4369 | wret = drm_dp_dpcd_write(&intel_dp->aux, |
||
4370 | DP_SINK_COUNT_ESI+1, |
||
4371 | &esi[1], 3); |
||
4372 | if (wret == 3) { |
||
4373 | break; |
||
4374 | } |
||
4375 | } |
||
4376 | |||
4377 | bret = intel_dp_get_sink_irq_esi(intel_dp, esi); |
||
4378 | if (bret == true) { |
||
6084 | serge | 4379 | DRM_DEBUG_KMS("got esi2 %3ph\n", esi); |
5060 | serge | 4380 | goto go_again; |
4381 | } |
||
4382 | } else |
||
4383 | ret = 0; |
||
4384 | |||
4385 | return ret; |
||
4386 | } else { |
||
4387 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
||
4388 | DRM_DEBUG_KMS("failed to get ESI - device may have failed\n"); |
||
4389 | intel_dp->is_mst = false; |
||
4390 | drm_dp_mst_topology_mgr_set_mst(&intel_dp->mst_mgr, intel_dp->is_mst); |
||
4391 | /* send a hotplug event */ |
||
4392 | drm_kms_helper_hotplug_event(intel_dig_port->base.base.dev); |
||
4393 | } |
||
4394 | } |
||
4395 | return -EINVAL; |
||
4396 | } |
||
4397 | |||
2330 | Serge | 4398 | /* |
4399 | * According to DP spec |
||
4400 | * 5.1.2: |
||
4401 | * 1. Read DPCD |
||
4402 | * 2. Configure link according to Receiver Capabilities |
||
4403 | * 3. Use Link Training from 2.5.3.3 and 3.5.1.3 |
||
4404 | * 4. Check link status on receipt of hot-plug interrupt |
||
4405 | */ |
||
6084 | serge | 4406 | static void |
2330 | Serge | 4407 | intel_dp_check_link_status(struct intel_dp *intel_dp) |
4408 | { |
||
5060 | serge | 4409 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
3243 | Serge | 4410 | struct intel_encoder *intel_encoder = &dp_to_dig_port(intel_dp)->base; |
2342 | Serge | 4411 | u8 sink_irq_vector; |
4412 | u8 link_status[DP_LINK_STATUS_SIZE]; |
||
4413 | |||
5060 | serge | 4414 | WARN_ON(!drm_modeset_is_locked(&dev->mode_config.connection_mutex)); |
4415 | |||
6084 | serge | 4416 | if (!intel_encoder->base.crtc) |
2330 | Serge | 4417 | return; |
4418 | |||
5060 | serge | 4419 | if (!to_intel_crtc(intel_encoder->base.crtc)->active) |
4420 | return; |
||
4421 | |||
2330 | Serge | 4422 | /* Try to read receiver status if the link appears to be up */ |
2342 | Serge | 4423 | if (!intel_dp_get_link_status(intel_dp, link_status)) { |
2330 | Serge | 4424 | return; |
4425 | } |
||
4426 | |||
4427 | /* Now read the DPCD to see if it's actually running */ |
||
4428 | if (!intel_dp_get_dpcd(intel_dp)) { |
||
4429 | return; |
||
4430 | } |
||
4431 | |||
2342 | Serge | 4432 | /* Try to read the source of the interrupt */ |
4433 | if (intel_dp->dpcd[DP_DPCD_REV] >= 0x11 && |
||
4434 | intel_dp_get_sink_irq(intel_dp, &sink_irq_vector)) { |
||
4435 | /* Clear interrupt source */ |
||
5060 | serge | 4436 | drm_dp_dpcd_writeb(&intel_dp->aux, |
6084 | serge | 4437 | DP_DEVICE_SERVICE_IRQ_VECTOR, |
4438 | sink_irq_vector); |
||
2342 | Serge | 4439 | |
4440 | if (sink_irq_vector & DP_AUTOMATED_TEST_REQUEST) |
||
6084 | serge | 4441 | DRM_DEBUG_DRIVER("Test request in short pulse not handled\n"); |
2342 | Serge | 4442 | if (sink_irq_vector & (DP_CP_IRQ | DP_SINK_SPECIFIC_IRQ)) |
4443 | DRM_DEBUG_DRIVER("CP or sink specific irq unhandled\n"); |
||
4444 | } |
||
4445 | |||
3243 | Serge | 4446 | if (!drm_dp_channel_eq_ok(link_status, intel_dp->lane_count)) { |
2330 | Serge | 4447 | DRM_DEBUG_KMS("%s: channel EQ not ok, retraining\n", |
5060 | serge | 4448 | intel_encoder->base.name); |
2330 | Serge | 4449 | intel_dp_start_link_train(intel_dp); |
3746 | Serge | 4450 | intel_dp_stop_link_train(intel_dp); |
2330 | Serge | 4451 | } |
4452 | } |
||
4453 | |||
3031 | serge | 4454 | /* XXX this is probably wrong for multiple downstream ports */ |
2330 | Serge | 4455 | static enum drm_connector_status |
4456 | intel_dp_detect_dpcd(struct intel_dp *intel_dp) |
||
4457 | { |
||
3031 | serge | 4458 | uint8_t *dpcd = intel_dp->dpcd; |
4459 | uint8_t type; |
||
4460 | |||
4461 | if (!intel_dp_get_dpcd(intel_dp)) |
||
4462 | return connector_status_disconnected; |
||
4463 | |||
4464 | /* if there's no downstream port, we're done */ |
||
4465 | if (!(dpcd[DP_DOWNSTREAMPORT_PRESENT] & DP_DWN_STRM_PORT_PRESENT)) |
||
2330 | Serge | 4466 | return connector_status_connected; |
3031 | serge | 4467 | |
4468 | /* If we're HPD-aware, SINK_COUNT changes dynamically */ |
||
4560 | Serge | 4469 | if (intel_dp->dpcd[DP_DPCD_REV] >= 0x11 && |
4470 | intel_dp->downstream_ports[0] & DP_DS_PORT_HPD) { |
||
3031 | serge | 4471 | uint8_t reg; |
5060 | serge | 4472 | |
4473 | if (intel_dp_dpcd_read_wake(&intel_dp->aux, DP_SINK_COUNT, |
||
4474 | ®, 1) < 0) |
||
3031 | serge | 4475 | return connector_status_unknown; |
5060 | serge | 4476 | |
3031 | serge | 4477 | return DP_GET_SINK_COUNT(reg) ? connector_status_connected |
4478 | : connector_status_disconnected; |
||
4479 | } |
||
4480 | |||
4481 | /* If no HPD, poke DDC gently */ |
||
5060 | serge | 4482 | if (drm_probe_ddc(&intel_dp->aux.ddc)) |
3031 | serge | 4483 | return connector_status_connected; |
4484 | |||
4485 | /* Well we tried, say unknown for unreliable port types */ |
||
4560 | Serge | 4486 | if (intel_dp->dpcd[DP_DPCD_REV] >= 0x11) { |
6084 | serge | 4487 | type = intel_dp->downstream_ports[0] & DP_DS_PORT_TYPE_MASK; |
4560 | Serge | 4488 | if (type == DP_DS_PORT_TYPE_VGA || |
4489 | type == DP_DS_PORT_TYPE_NON_EDID) |
||
6084 | serge | 4490 | return connector_status_unknown; |
4560 | Serge | 4491 | } else { |
4492 | type = intel_dp->dpcd[DP_DOWNSTREAMPORT_PRESENT] & |
||
4493 | DP_DWN_STRM_PORT_TYPE_MASK; |
||
4494 | if (type == DP_DWN_STRM_PORT_TYPE_ANALOG || |
||
4495 | type == DP_DWN_STRM_PORT_TYPE_OTHER) |
||
5060 | serge | 4496 | return connector_status_unknown; |
4560 | Serge | 4497 | } |
3031 | serge | 4498 | |
4499 | /* Anything else is out of spec, warn and ignore */ |
||
4500 | DRM_DEBUG_KMS("Broken DP branch device, ignoring\n"); |
||
2330 | Serge | 4501 | return connector_status_disconnected; |
4502 | } |
||
4503 | |||
4504 | static enum drm_connector_status |
||
5354 | serge | 4505 | edp_detect(struct intel_dp *intel_dp) |
2330 | Serge | 4506 | { |
3243 | Serge | 4507 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
2330 | Serge | 4508 | enum drm_connector_status status; |
4509 | |||
6084 | serge | 4510 | status = intel_panel_detect(dev); |
4511 | if (status == connector_status_unknown) |
||
4512 | status = connector_status_connected; |
||
5354 | serge | 4513 | |
6084 | serge | 4514 | return status; |
5354 | serge | 4515 | } |
2330 | Serge | 4516 | |
6084 | serge | 4517 | static bool ibx_digital_port_connected(struct drm_i915_private *dev_priv, |
4518 | struct intel_digital_port *port) |
||
5354 | serge | 4519 | { |
6084 | serge | 4520 | u32 bit; |
5354 | serge | 4521 | |
6084 | serge | 4522 | switch (port->port) { |
4523 | case PORT_A: |
||
4524 | return true; |
||
4525 | case PORT_B: |
||
4526 | bit = SDE_PORTB_HOTPLUG; |
||
4527 | break; |
||
4528 | case PORT_C: |
||
4529 | bit = SDE_PORTC_HOTPLUG; |
||
4530 | break; |
||
4531 | case PORT_D: |
||
4532 | bit = SDE_PORTD_HOTPLUG; |
||
4533 | break; |
||
4534 | default: |
||
4535 | MISSING_CASE(port->port); |
||
4536 | return false; |
||
4537 | } |
||
3480 | Serge | 4538 | |
6084 | serge | 4539 | return I915_READ(SDEISR) & bit; |
2330 | Serge | 4540 | } |
4541 | |||
6084 | serge | 4542 | static bool cpt_digital_port_connected(struct drm_i915_private *dev_priv, |
4543 | struct intel_digital_port *port) |
||
2330 | Serge | 4544 | { |
6084 | serge | 4545 | u32 bit; |
2330 | Serge | 4546 | |
6084 | serge | 4547 | switch (port->port) { |
4548 | case PORT_A: |
||
4549 | return true; |
||
3480 | Serge | 4550 | case PORT_B: |
6084 | serge | 4551 | bit = SDE_PORTB_HOTPLUG_CPT; |
2330 | Serge | 4552 | break; |
3480 | Serge | 4553 | case PORT_C: |
6084 | serge | 4554 | bit = SDE_PORTC_HOTPLUG_CPT; |
2330 | Serge | 4555 | break; |
3480 | Serge | 4556 | case PORT_D: |
6084 | serge | 4557 | bit = SDE_PORTD_HOTPLUG_CPT; |
2330 | Serge | 4558 | break; |
6084 | serge | 4559 | case PORT_E: |
4560 | bit = SDE_PORTE_HOTPLUG_SPT; |
||
4561 | break; |
||
2330 | Serge | 4562 | default: |
6084 | serge | 4563 | MISSING_CASE(port->port); |
4564 | return false; |
||
2330 | Serge | 4565 | } |
6084 | serge | 4566 | |
4567 | return I915_READ(SDEISR) & bit; |
||
4568 | } |
||
4569 | |||
4570 | static bool g4x_digital_port_connected(struct drm_i915_private *dev_priv, |
||
4571 | struct intel_digital_port *port) |
||
4572 | { |
||
4573 | u32 bit; |
||
4574 | |||
4575 | switch (port->port) { |
||
4576 | case PORT_B: |
||
4577 | bit = PORTB_HOTPLUG_LIVE_STATUS_G4X; |
||
4578 | break; |
||
4579 | case PORT_C: |
||
4580 | bit = PORTC_HOTPLUG_LIVE_STATUS_G4X; |
||
4581 | break; |
||
4582 | case PORT_D: |
||
4583 | bit = PORTD_HOTPLUG_LIVE_STATUS_G4X; |
||
4584 | break; |
||
4585 | default: |
||
4586 | MISSING_CASE(port->port); |
||
4587 | return false; |
||
4560 | Serge | 4588 | } |
2330 | Serge | 4589 | |
6084 | serge | 4590 | return I915_READ(PORT_HOTPLUG_STAT) & bit; |
5097 | serge | 4591 | } |
4592 | |||
6660 | serge | 4593 | static bool gm45_digital_port_connected(struct drm_i915_private *dev_priv, |
6084 | serge | 4594 | struct intel_digital_port *port) |
4595 | { |
||
4596 | u32 bit; |
||
4597 | |||
4598 | switch (port->port) { |
||
4599 | case PORT_B: |
||
6660 | serge | 4600 | bit = PORTB_HOTPLUG_LIVE_STATUS_GM45; |
6084 | serge | 4601 | break; |
4602 | case PORT_C: |
||
6660 | serge | 4603 | bit = PORTC_HOTPLUG_LIVE_STATUS_GM45; |
6084 | serge | 4604 | break; |
4605 | case PORT_D: |
||
6660 | serge | 4606 | bit = PORTD_HOTPLUG_LIVE_STATUS_GM45; |
6084 | serge | 4607 | break; |
4608 | default: |
||
4609 | MISSING_CASE(port->port); |
||
4610 | return false; |
||
4611 | } |
||
4612 | |||
4613 | return I915_READ(PORT_HOTPLUG_STAT) & bit; |
||
4614 | } |
||
4615 | |||
4616 | static bool bxt_digital_port_connected(struct drm_i915_private *dev_priv, |
||
4617 | struct intel_digital_port *intel_dig_port) |
||
4618 | { |
||
4619 | struct intel_encoder *intel_encoder = &intel_dig_port->base; |
||
4620 | enum port port; |
||
6296 | serge | 4621 | u32 bit; |
6084 | serge | 4622 | |
6296 | serge | 4623 | intel_hpd_pin_to_port(intel_encoder->hpd_pin, &port); |
4624 | switch (port) { |
||
4625 | case PORT_A: |
||
4626 | bit = BXT_DE_PORT_HP_DDIA; |
||
4627 | break; |
||
4628 | case PORT_B: |
||
4629 | bit = BXT_DE_PORT_HP_DDIB; |
||
4630 | break; |
||
4631 | case PORT_C: |
||
4632 | bit = BXT_DE_PORT_HP_DDIC; |
||
4633 | break; |
||
4634 | default: |
||
4635 | MISSING_CASE(port); |
||
4636 | return false; |
||
4637 | } |
||
6084 | serge | 4638 | |
4639 | return I915_READ(GEN8_DE_PORT_ISR) & bit; |
||
4640 | } |
||
4641 | |||
4642 | /* |
||
4643 | * intel_digital_port_connected - is the specified port connected? |
||
4644 | * @dev_priv: i915 private structure |
||
4645 | * @port: the port to test |
||
4646 | * |
||
4647 | * Return %true if @port is connected, %false otherwise. |
||
4648 | */ |
||
6935 | serge | 4649 | static bool intel_digital_port_connected(struct drm_i915_private *dev_priv, |
6084 | serge | 4650 | struct intel_digital_port *port) |
4651 | { |
||
4652 | if (HAS_PCH_IBX(dev_priv)) |
||
4653 | return ibx_digital_port_connected(dev_priv, port); |
||
4654 | if (HAS_PCH_SPLIT(dev_priv)) |
||
4655 | return cpt_digital_port_connected(dev_priv, port); |
||
4656 | else if (IS_BROXTON(dev_priv)) |
||
4657 | return bxt_digital_port_connected(dev_priv, port); |
||
6660 | serge | 4658 | else if (IS_GM45(dev_priv)) |
4659 | return gm45_digital_port_connected(dev_priv, port); |
||
6084 | serge | 4660 | else |
4661 | return g4x_digital_port_connected(dev_priv, port); |
||
4662 | } |
||
4663 | |||
5097 | serge | 4664 | static enum drm_connector_status |
6084 | serge | 4665 | ironlake_dp_detect(struct intel_dp *intel_dp) |
4666 | { |
||
4667 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
||
4668 | struct drm_i915_private *dev_priv = dev->dev_private; |
||
4669 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
||
4670 | |||
4671 | if (!intel_digital_port_connected(dev_priv, intel_dig_port)) |
||
4672 | return connector_status_disconnected; |
||
4673 | |||
4674 | return intel_dp_detect_dpcd(intel_dp); |
||
4675 | } |
||
4676 | |||
4677 | static enum drm_connector_status |
||
5097 | serge | 4678 | g4x_dp_detect(struct intel_dp *intel_dp) |
4679 | { |
||
4680 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
||
4681 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
||
4682 | |||
4683 | /* Can't disconnect eDP, but you can close the lid... */ |
||
4684 | if (is_edp(intel_dp)) { |
||
4685 | enum drm_connector_status status; |
||
4686 | |||
4687 | status = intel_panel_detect(dev); |
||
4688 | if (status == connector_status_unknown) |
||
4689 | status = connector_status_connected; |
||
4690 | return status; |
||
4691 | } |
||
4692 | |||
6084 | serge | 4693 | if (!intel_digital_port_connected(dev->dev_private, intel_dig_port)) |
2330 | Serge | 4694 | return connector_status_disconnected; |
4695 | |||
4696 | return intel_dp_detect_dpcd(intel_dp); |
||
4697 | } |
||
4698 | |||
2342 | Serge | 4699 | static struct edid * |
5354 | serge | 4700 | intel_dp_get_edid(struct intel_dp *intel_dp) |
2342 | Serge | 4701 | { |
5354 | serge | 4702 | struct intel_connector *intel_connector = intel_dp->attached_connector; |
3243 | Serge | 4703 | |
4704 | /* use cached edid if we have one */ |
||
4705 | if (intel_connector->edid) { |
||
4706 | /* invalid edid */ |
||
4707 | if (IS_ERR(intel_connector->edid)) |
||
3031 | serge | 4708 | return NULL; |
4709 | |||
4560 | Serge | 4710 | return drm_edid_duplicate(intel_connector->edid); |
5354 | serge | 4711 | } else |
4712 | return drm_get_edid(&intel_connector->base, |
||
4713 | &intel_dp->aux.ddc); |
||
4714 | } |
||
3031 | serge | 4715 | |
5354 | serge | 4716 | static void |
4717 | intel_dp_set_edid(struct intel_dp *intel_dp) |
||
4718 | { |
||
4719 | struct intel_connector *intel_connector = intel_dp->attached_connector; |
||
4720 | struct edid *edid; |
||
4721 | |||
4722 | edid = intel_dp_get_edid(intel_dp); |
||
4723 | intel_connector->detect_edid = edid; |
||
4724 | |||
4725 | if (intel_dp->force_audio != HDMI_AUDIO_AUTO) |
||
4726 | intel_dp->has_audio = intel_dp->force_audio == HDMI_AUDIO_ON; |
||
4727 | else |
||
4728 | intel_dp->has_audio = drm_detect_monitor_audio(edid); |
||
2342 | Serge | 4729 | } |
4730 | |||
5354 | serge | 4731 | static void |
4732 | intel_dp_unset_edid(struct intel_dp *intel_dp) |
||
2342 | Serge | 4733 | { |
5354 | serge | 4734 | struct intel_connector *intel_connector = intel_dp->attached_connector; |
2342 | Serge | 4735 | |
5354 | serge | 4736 | kfree(intel_connector->detect_edid); |
4737 | intel_connector->detect_edid = NULL; |
||
3243 | Serge | 4738 | |
5354 | serge | 4739 | intel_dp->has_audio = false; |
4740 | } |
||
3031 | serge | 4741 | |
2330 | Serge | 4742 | static enum drm_connector_status |
4743 | intel_dp_detect(struct drm_connector *connector, bool force) |
||
4744 | { |
||
4745 | struct intel_dp *intel_dp = intel_attached_dp(connector); |
||
3243 | Serge | 4746 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
4747 | struct intel_encoder *intel_encoder = &intel_dig_port->base; |
||
4748 | struct drm_device *dev = connector->dev; |
||
2330 | Serge | 4749 | enum drm_connector_status status; |
5060 | serge | 4750 | enum intel_display_power_domain power_domain; |
4751 | bool ret; |
||
6084 | serge | 4752 | u8 sink_irq_vector; |
2330 | Serge | 4753 | |
4104 | Serge | 4754 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n", |
5060 | serge | 4755 | connector->base.id, connector->name); |
5354 | serge | 4756 | intel_dp_unset_edid(intel_dp); |
4104 | Serge | 4757 | |
5060 | serge | 4758 | if (intel_dp->is_mst) { |
4759 | /* MST devices are disconnected from a monitor POV */ |
||
4760 | if (intel_encoder->type != INTEL_OUTPUT_EDP) |
||
4761 | intel_encoder->type = INTEL_OUTPUT_DISPLAYPORT; |
||
5354 | serge | 4762 | return connector_status_disconnected; |
5060 | serge | 4763 | } |
4764 | |||
6084 | serge | 4765 | power_domain = intel_display_port_aux_power_domain(intel_encoder); |
4766 | intel_display_power_get(to_i915(dev), power_domain); |
||
2330 | Serge | 4767 | |
5354 | serge | 4768 | /* Can't disconnect eDP, but you can close the lid... */ |
4769 | if (is_edp(intel_dp)) |
||
4770 | status = edp_detect(intel_dp); |
||
4771 | else if (HAS_PCH_SPLIT(dev)) |
||
2330 | Serge | 4772 | status = ironlake_dp_detect(intel_dp); |
4773 | else |
||
4774 | status = g4x_dp_detect(intel_dp); |
||
4775 | if (status != connector_status_connected) |
||
4560 | Serge | 4776 | goto out; |
3031 | serge | 4777 | |
4778 | intel_dp_probe_oui(intel_dp); |
||
4779 | |||
5060 | serge | 4780 | ret = intel_dp_probe_mst(intel_dp); |
4781 | if (ret) { |
||
4782 | /* if we are in MST mode then this connector |
||
4783 | won't appear connected or have anything with EDID on it */ |
||
4784 | if (intel_encoder->type != INTEL_OUTPUT_EDP) |
||
4785 | intel_encoder->type = INTEL_OUTPUT_DISPLAYPORT; |
||
4786 | status = connector_status_disconnected; |
||
4787 | goto out; |
||
4788 | } |
||
4789 | |||
5354 | serge | 4790 | intel_dp_set_edid(intel_dp); |
3243 | Serge | 4791 | |
4792 | if (intel_encoder->type != INTEL_OUTPUT_EDP) |
||
4793 | intel_encoder->type = INTEL_OUTPUT_DISPLAYPORT; |
||
4560 | Serge | 4794 | status = connector_status_connected; |
4795 | |||
6084 | serge | 4796 | /* Try to read the source of the interrupt */ |
4797 | if (intel_dp->dpcd[DP_DPCD_REV] >= 0x11 && |
||
4798 | intel_dp_get_sink_irq(intel_dp, &sink_irq_vector)) { |
||
4799 | /* Clear interrupt source */ |
||
4800 | drm_dp_dpcd_writeb(&intel_dp->aux, |
||
4801 | DP_DEVICE_SERVICE_IRQ_VECTOR, |
||
4802 | sink_irq_vector); |
||
4803 | |||
4804 | if (sink_irq_vector & DP_AUTOMATED_TEST_REQUEST) |
||
4805 | intel_dp_handle_test_request(intel_dp); |
||
4806 | if (sink_irq_vector & (DP_CP_IRQ | DP_SINK_SPECIFIC_IRQ)) |
||
4807 | DRM_DEBUG_DRIVER("CP or sink specific irq unhandled\n"); |
||
4808 | } |
||
4809 | |||
4560 | Serge | 4810 | out: |
6084 | serge | 4811 | intel_display_power_put(to_i915(dev), power_domain); |
4560 | Serge | 4812 | return status; |
2330 | Serge | 4813 | } |
4814 | |||
5354 | serge | 4815 | static void |
4816 | intel_dp_force(struct drm_connector *connector) |
||
2330 | Serge | 4817 | { |
4818 | struct intel_dp *intel_dp = intel_attached_dp(connector); |
||
5354 | serge | 4819 | struct intel_encoder *intel_encoder = &dp_to_dig_port(intel_dp)->base; |
6084 | serge | 4820 | struct drm_i915_private *dev_priv = to_i915(intel_encoder->base.dev); |
5060 | serge | 4821 | enum intel_display_power_domain power_domain; |
2330 | Serge | 4822 | |
5354 | serge | 4823 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n", |
4824 | connector->base.id, connector->name); |
||
4825 | intel_dp_unset_edid(intel_dp); |
||
2330 | Serge | 4826 | |
5354 | serge | 4827 | if (connector->status != connector_status_connected) |
4828 | return; |
||
5060 | serge | 4829 | |
6084 | serge | 4830 | power_domain = intel_display_port_aux_power_domain(intel_encoder); |
4831 | intel_display_power_get(dev_priv, power_domain); |
||
5354 | serge | 4832 | |
4833 | intel_dp_set_edid(intel_dp); |
||
4834 | |||
6084 | serge | 4835 | intel_display_power_put(dev_priv, power_domain); |
5354 | serge | 4836 | |
4837 | if (intel_encoder->type != INTEL_OUTPUT_EDP) |
||
4838 | intel_encoder->type = INTEL_OUTPUT_DISPLAYPORT; |
||
4839 | } |
||
4840 | |||
4841 | static int intel_dp_get_modes(struct drm_connector *connector) |
||
4842 | { |
||
4843 | struct intel_connector *intel_connector = to_intel_connector(connector); |
||
4844 | struct edid *edid; |
||
4845 | |||
4846 | edid = intel_connector->detect_edid; |
||
4847 | if (edid) { |
||
4848 | int ret = intel_connector_update_modes(connector, edid); |
||
6084 | serge | 4849 | if (ret) |
4850 | return ret; |
||
5354 | serge | 4851 | } |
2330 | Serge | 4852 | |
3243 | Serge | 4853 | /* if eDP has no EDID, fall back to fixed mode */ |
5354 | serge | 4854 | if (is_edp(intel_attached_dp(connector)) && |
4855 | intel_connector->panel.fixed_mode) { |
||
6084 | serge | 4856 | struct drm_display_mode *mode; |
5354 | serge | 4857 | |
4858 | mode = drm_mode_duplicate(connector->dev, |
||
3243 | Serge | 4859 | intel_connector->panel.fixed_mode); |
4860 | if (mode) { |
||
2330 | Serge | 4861 | drm_mode_probed_add(connector, mode); |
4862 | return 1; |
||
4863 | } |
||
4864 | } |
||
5354 | serge | 4865 | |
2330 | Serge | 4866 | return 0; |
4867 | } |
||
4868 | |||
3243 | Serge | 4869 | static bool |
4870 | intel_dp_detect_audio(struct drm_connector *connector) |
||
4871 | { |
||
5354 | serge | 4872 | bool has_audio = false; |
3243 | Serge | 4873 | struct edid *edid; |
2330 | Serge | 4874 | |
5354 | serge | 4875 | edid = to_intel_connector(connector)->detect_edid; |
4876 | if (edid) |
||
3243 | Serge | 4877 | has_audio = drm_detect_monitor_audio(edid); |
2330 | Serge | 4878 | |
3243 | Serge | 4879 | return has_audio; |
4880 | } |
||
2330 | Serge | 4881 | |
4882 | static int |
||
4883 | intel_dp_set_property(struct drm_connector *connector, |
||
4884 | struct drm_property *property, |
||
4885 | uint64_t val) |
||
4886 | { |
||
4887 | struct drm_i915_private *dev_priv = connector->dev->dev_private; |
||
3243 | Serge | 4888 | struct intel_connector *intel_connector = to_intel_connector(connector); |
4889 | struct intel_encoder *intel_encoder = intel_attached_encoder(connector); |
||
4890 | struct intel_dp *intel_dp = enc_to_intel_dp(&intel_encoder->base); |
||
2330 | Serge | 4891 | int ret; |
4892 | |||
3243 | Serge | 4893 | ret = drm_object_property_set_value(&connector->base, property, val); |
2330 | Serge | 4894 | if (ret) |
4895 | return ret; |
||
3480 | Serge | 4896 | |
2330 | Serge | 4897 | if (property == dev_priv->force_audio_property) { |
4898 | int i = val; |
||
4899 | bool has_audio; |
||
4900 | |||
4901 | if (i == intel_dp->force_audio) |
||
4902 | return 0; |
||
4903 | |||
4904 | intel_dp->force_audio = i; |
||
4905 | |||
3031 | serge | 4906 | if (i == HDMI_AUDIO_AUTO) |
2330 | Serge | 4907 | has_audio = intel_dp_detect_audio(connector); |
4908 | else |
||
3031 | serge | 4909 | has_audio = (i == HDMI_AUDIO_ON); |
2330 | Serge | 4910 | |
4911 | if (has_audio == intel_dp->has_audio) |
||
4912 | return 0; |
||
4913 | |||
4914 | intel_dp->has_audio = has_audio; |
||
4915 | goto done; |
||
4916 | } |
||
4917 | |||
4918 | if (property == dev_priv->broadcast_rgb_property) { |
||
3746 | Serge | 4919 | bool old_auto = intel_dp->color_range_auto; |
6084 | serge | 4920 | bool old_range = intel_dp->limited_color_range; |
3746 | Serge | 4921 | |
3480 | Serge | 4922 | switch (val) { |
4923 | case INTEL_BROADCAST_RGB_AUTO: |
||
4924 | intel_dp->color_range_auto = true; |
||
4925 | break; |
||
4926 | case INTEL_BROADCAST_RGB_FULL: |
||
4927 | intel_dp->color_range_auto = false; |
||
6084 | serge | 4928 | intel_dp->limited_color_range = false; |
3480 | Serge | 4929 | break; |
4930 | case INTEL_BROADCAST_RGB_LIMITED: |
||
4931 | intel_dp->color_range_auto = false; |
||
6084 | serge | 4932 | intel_dp->limited_color_range = true; |
3480 | Serge | 4933 | break; |
4934 | default: |
||
4935 | return -EINVAL; |
||
4936 | } |
||
3746 | Serge | 4937 | |
4938 | if (old_auto == intel_dp->color_range_auto && |
||
6084 | serge | 4939 | old_range == intel_dp->limited_color_range) |
3746 | Serge | 4940 | return 0; |
4941 | |||
6084 | serge | 4942 | goto done; |
2330 | Serge | 4943 | } |
4944 | |||
3243 | Serge | 4945 | if (is_edp(intel_dp) && |
4946 | property == connector->dev->mode_config.scaling_mode_property) { |
||
4947 | if (val == DRM_MODE_SCALE_NONE) { |
||
4948 | DRM_DEBUG_KMS("no scaling not supported\n"); |
||
4949 | return -EINVAL; |
||
4950 | } |
||
4951 | |||
4952 | if (intel_connector->panel.fitting_mode == val) { |
||
4953 | /* the eDP scaling property is not changed */ |
||
4954 | return 0; |
||
4955 | } |
||
4956 | intel_connector->panel.fitting_mode = val; |
||
4957 | |||
4958 | goto done; |
||
4959 | } |
||
4960 | |||
2330 | Serge | 4961 | return -EINVAL; |
4962 | |||
4963 | done: |
||
3480 | Serge | 4964 | if (intel_encoder->base.crtc) |
4965 | intel_crtc_restore_mode(intel_encoder->base.crtc); |
||
2330 | Serge | 4966 | |
4967 | return 0; |
||
4968 | } |
||
4969 | |||
4970 | static void |
||
4104 | Serge | 4971 | intel_dp_connector_destroy(struct drm_connector *connector) |
2330 | Serge | 4972 | { |
3243 | Serge | 4973 | struct intel_connector *intel_connector = to_intel_connector(connector); |
2330 | Serge | 4974 | |
5354 | serge | 4975 | kfree(intel_connector->detect_edid); |
4976 | |||
3243 | Serge | 4977 | if (!IS_ERR_OR_NULL(intel_connector->edid)) |
4978 | kfree(intel_connector->edid); |
||
4979 | |||
4104 | Serge | 4980 | /* Can't call is_edp() since the encoder may have been destroyed |
4981 | * already. */ |
||
4982 | if (connector->connector_type == DRM_MODE_CONNECTOR_eDP) |
||
3243 | Serge | 4983 | intel_panel_fini(&intel_connector->panel); |
2330 | Serge | 4984 | |
4985 | drm_connector_cleanup(connector); |
||
4986 | kfree(connector); |
||
4987 | } |
||
4988 | |||
3243 | Serge | 4989 | void intel_dp_encoder_destroy(struct drm_encoder *encoder) |
2330 | Serge | 4990 | { |
3243 | Serge | 4991 | struct intel_digital_port *intel_dig_port = enc_to_dig_port(encoder); |
4992 | struct intel_dp *intel_dp = &intel_dig_port->dp; |
||
2330 | Serge | 4993 | |
5060 | serge | 4994 | drm_dp_aux_unregister(&intel_dp->aux); |
4995 | intel_dp_mst_encoder_cleanup(intel_dig_port); |
||
2342 | Serge | 4996 | if (is_edp(intel_dp)) { |
4293 | Serge | 4997 | cancel_delayed_work_sync(&intel_dp->panel_vdd_work); |
5354 | serge | 4998 | /* |
4999 | * vdd might still be enabled do to the delayed vdd off. |
||
5000 | * Make sure vdd is actually turned off here. |
||
5001 | */ |
||
5002 | pps_lock(intel_dp); |
||
5060 | serge | 5003 | edp_panel_vdd_off_sync(intel_dp); |
5354 | serge | 5004 | pps_unlock(intel_dp); |
5005 | |||
2342 | Serge | 5006 | } |
6084 | serge | 5007 | drm_encoder_cleanup(encoder); |
3243 | Serge | 5008 | kfree(intel_dig_port); |
2330 | Serge | 5009 | } |
5010 | |||
6660 | serge | 5011 | void intel_dp_encoder_suspend(struct intel_encoder *intel_encoder) |
5060 | serge | 5012 | { |
5013 | struct intel_dp *intel_dp = enc_to_intel_dp(&intel_encoder->base); |
||
5014 | |||
5015 | if (!is_edp(intel_dp)) |
||
5016 | return; |
||
5017 | |||
5354 | serge | 5018 | /* |
5019 | * vdd might still be enabled do to the delayed vdd off. |
||
5020 | * Make sure vdd is actually turned off here. |
||
5021 | */ |
||
5022 | cancel_delayed_work_sync(&intel_dp->panel_vdd_work); |
||
5023 | pps_lock(intel_dp); |
||
5060 | serge | 5024 | edp_panel_vdd_off_sync(intel_dp); |
5354 | serge | 5025 | pps_unlock(intel_dp); |
5060 | serge | 5026 | } |
5027 | |||
5354 | serge | 5028 | static void intel_edp_panel_vdd_sanitize(struct intel_dp *intel_dp) |
5029 | { |
||
5030 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
||
5031 | struct drm_device *dev = intel_dig_port->base.base.dev; |
||
5032 | struct drm_i915_private *dev_priv = dev->dev_private; |
||
5033 | enum intel_display_power_domain power_domain; |
||
5034 | |||
5035 | lockdep_assert_held(&dev_priv->pps_mutex); |
||
5036 | |||
5037 | if (!edp_have_panel_vdd(intel_dp)) |
||
5038 | return; |
||
5039 | |||
5040 | /* |
||
5041 | * The VDD bit needs a power domain reference, so if the bit is |
||
5042 | * already enabled when we boot or resume, grab this reference and |
||
5043 | * schedule a vdd off, so we don't hold on to the reference |
||
5044 | * indefinitely. |
||
5045 | */ |
||
5046 | DRM_DEBUG_KMS("VDD left on by BIOS, adjusting state tracking\n"); |
||
6084 | serge | 5047 | power_domain = intel_display_port_aux_power_domain(&intel_dig_port->base); |
5354 | serge | 5048 | intel_display_power_get(dev_priv, power_domain); |
5049 | |||
5050 | edp_panel_vdd_schedule_off(intel_dp); |
||
5051 | } |
||
5052 | |||
6660 | serge | 5053 | void intel_dp_encoder_reset(struct drm_encoder *encoder) |
5060 | serge | 5054 | { |
6660 | serge | 5055 | struct drm_i915_private *dev_priv = to_i915(encoder->dev); |
5056 | struct intel_dp *intel_dp = enc_to_intel_dp(encoder); |
||
5354 | serge | 5057 | |
6660 | serge | 5058 | if (!HAS_DDI(dev_priv)) |
5059 | intel_dp->DP = I915_READ(intel_dp->output_reg); |
||
5060 | |||
5354 | serge | 5061 | if (to_intel_encoder(encoder)->type != INTEL_OUTPUT_EDP) |
5062 | return; |
||
5063 | |||
5064 | pps_lock(intel_dp); |
||
5065 | |||
5066 | /* |
||
5067 | * Read out the current power sequencer assignment, |
||
5068 | * in case the BIOS did something with it. |
||
5069 | */ |
||
5070 | if (IS_VALLEYVIEW(encoder->dev)) |
||
5071 | vlv_initial_power_sequencer_setup(intel_dp); |
||
5072 | |||
5073 | intel_edp_panel_vdd_sanitize(intel_dp); |
||
5074 | |||
5075 | pps_unlock(intel_dp); |
||
5060 | serge | 5076 | } |
5077 | |||
2330 | Serge | 5078 | static const struct drm_connector_funcs intel_dp_connector_funcs = { |
6084 | serge | 5079 | .dpms = drm_atomic_helper_connector_dpms, |
2330 | Serge | 5080 | .detect = intel_dp_detect, |
5354 | serge | 5081 | .force = intel_dp_force, |
2330 | Serge | 5082 | .fill_modes = drm_helper_probe_single_connector_modes, |
5083 | .set_property = intel_dp_set_property, |
||
6084 | serge | 5084 | .atomic_get_property = intel_connector_atomic_get_property, |
4104 | Serge | 5085 | .destroy = intel_dp_connector_destroy, |
6084 | serge | 5086 | .atomic_destroy_state = drm_atomic_helper_connector_destroy_state, |
5087 | .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state, |
||
2330 | Serge | 5088 | }; |
5089 | |||
5090 | static const struct drm_connector_helper_funcs intel_dp_connector_helper_funcs = { |
||
5091 | .get_modes = intel_dp_get_modes, |
||
5092 | .mode_valid = intel_dp_mode_valid, |
||
5093 | .best_encoder = intel_best_encoder, |
||
5094 | }; |
||
5095 | |||
5096 | static const struct drm_encoder_funcs intel_dp_enc_funcs = { |
||
5060 | serge | 5097 | .reset = intel_dp_encoder_reset, |
2330 | Serge | 5098 | .destroy = intel_dp_encoder_destroy, |
5099 | }; |
||
5100 | |||
6084 | serge | 5101 | enum irqreturn |
5060 | serge | 5102 | intel_dp_hpd_pulse(struct intel_digital_port *intel_dig_port, bool long_hpd) |
5103 | { |
||
5104 | struct intel_dp *intel_dp = &intel_dig_port->dp; |
||
5105 | struct intel_encoder *intel_encoder = &intel_dig_port->base; |
||
5106 | struct drm_device *dev = intel_dig_port->base.base.dev; |
||
5107 | struct drm_i915_private *dev_priv = dev->dev_private; |
||
5108 | enum intel_display_power_domain power_domain; |
||
6084 | serge | 5109 | enum irqreturn ret = IRQ_NONE; |
5060 | serge | 5110 | |
6084 | serge | 5111 | if (intel_dig_port->base.type != INTEL_OUTPUT_EDP && |
5112 | intel_dig_port->base.type != INTEL_OUTPUT_HDMI) |
||
5060 | serge | 5113 | intel_dig_port->base.type = INTEL_OUTPUT_DISPLAYPORT; |
5114 | |||
5354 | serge | 5115 | if (long_hpd && intel_dig_port->base.type == INTEL_OUTPUT_EDP) { |
5116 | /* |
||
5117 | * vdd off can generate a long pulse on eDP which |
||
5118 | * would require vdd on to handle it, and thus we |
||
5119 | * would end up in an endless cycle of |
||
5120 | * "vdd off -> long hpd -> vdd on -> detect -> vdd off -> ..." |
||
5121 | */ |
||
5122 | DRM_DEBUG_KMS("ignoring long hpd on eDP port %c\n", |
||
5123 | port_name(intel_dig_port->port)); |
||
6084 | serge | 5124 | return IRQ_HANDLED; |
5354 | serge | 5125 | } |
5126 | |||
5127 | DRM_DEBUG_KMS("got hpd irq on port %c - %s\n", |
||
5128 | port_name(intel_dig_port->port), |
||
5060 | serge | 5129 | long_hpd ? "long" : "short"); |
5130 | |||
6084 | serge | 5131 | power_domain = intel_display_port_aux_power_domain(intel_encoder); |
5060 | serge | 5132 | intel_display_power_get(dev_priv, power_domain); |
5133 | |||
5134 | if (long_hpd) { |
||
6084 | serge | 5135 | if (!intel_digital_port_connected(dev_priv, intel_dig_port)) |
5060 | serge | 5136 | goto mst_fail; |
5137 | |||
5138 | if (!intel_dp_get_dpcd(intel_dp)) { |
||
5139 | goto mst_fail; |
||
5140 | } |
||
5141 | |||
5142 | intel_dp_probe_oui(intel_dp); |
||
5143 | |||
6084 | serge | 5144 | if (!intel_dp_probe_mst(intel_dp)) { |
5145 | drm_modeset_lock(&dev->mode_config.connection_mutex, NULL); |
||
5146 | intel_dp_check_link_status(intel_dp); |
||
5147 | drm_modeset_unlock(&dev->mode_config.connection_mutex); |
||
5060 | serge | 5148 | goto mst_fail; |
6084 | serge | 5149 | } |
5060 | serge | 5150 | } else { |
5151 | if (intel_dp->is_mst) { |
||
5152 | if (intel_dp_check_mst_status(intel_dp) == -EINVAL) |
||
5153 | goto mst_fail; |
||
5154 | } |
||
5155 | |||
5156 | if (!intel_dp->is_mst) { |
||
5157 | drm_modeset_lock(&dev->mode_config.connection_mutex, NULL); |
||
5158 | intel_dp_check_link_status(intel_dp); |
||
5159 | drm_modeset_unlock(&dev->mode_config.connection_mutex); |
||
5160 | } |
||
5161 | } |
||
6084 | serge | 5162 | |
5163 | ret = IRQ_HANDLED; |
||
5164 | |||
5060 | serge | 5165 | goto put_power; |
5166 | mst_fail: |
||
5167 | /* if we were in MST mode, and device is not there get out of MST mode */ |
||
5168 | if (intel_dp->is_mst) { |
||
5169 | DRM_DEBUG_KMS("MST device may have disappeared %d vs %d\n", intel_dp->is_mst, intel_dp->mst_mgr.mst_state); |
||
5170 | intel_dp->is_mst = false; |
||
5171 | drm_dp_mst_topology_mgr_set_mst(&intel_dp->mst_mgr, intel_dp->is_mst); |
||
5172 | } |
||
5173 | put_power: |
||
5174 | intel_display_power_put(dev_priv, power_domain); |
||
5175 | |||
5176 | return ret; |
||
2330 | Serge | 5177 | } |
5178 | |||
2327 | Serge | 5179 | /* Return which DP Port should be selected for Transcoder DP control */ |
5180 | int |
||
2342 | Serge | 5181 | intel_trans_dp_port_sel(struct drm_crtc *crtc) |
2327 | Serge | 5182 | { |
5183 | struct drm_device *dev = crtc->dev; |
||
3243 | Serge | 5184 | struct intel_encoder *intel_encoder; |
5185 | struct intel_dp *intel_dp; |
||
2327 | Serge | 5186 | |
3243 | Serge | 5187 | for_each_encoder_on_crtc(dev, crtc, intel_encoder) { |
5188 | intel_dp = enc_to_intel_dp(&intel_encoder->base); |
||
2327 | Serge | 5189 | |
3243 | Serge | 5190 | if (intel_encoder->type == INTEL_OUTPUT_DISPLAYPORT || |
5191 | intel_encoder->type == INTEL_OUTPUT_EDP) |
||
2327 | Serge | 5192 | return intel_dp->output_reg; |
5193 | } |
||
5194 | |||
5195 | return -1; |
||
5196 | } |
||
2330 | Serge | 5197 | |
6084 | serge | 5198 | /* check the VBT to see whether the eDP is on another port */ |
4560 | Serge | 5199 | bool intel_dp_is_edp(struct drm_device *dev, enum port port) |
2330 | Serge | 5200 | { |
5201 | struct drm_i915_private *dev_priv = dev->dev_private; |
||
4560 | Serge | 5202 | union child_device_config *p_child; |
2330 | Serge | 5203 | int i; |
4560 | Serge | 5204 | static const short port_mapping[] = { |
6084 | serge | 5205 | [PORT_B] = DVO_PORT_DPB, |
5206 | [PORT_C] = DVO_PORT_DPC, |
||
5207 | [PORT_D] = DVO_PORT_DPD, |
||
5208 | [PORT_E] = DVO_PORT_DPE, |
||
4560 | Serge | 5209 | }; |
2330 | Serge | 5210 | |
6084 | serge | 5211 | /* |
5212 | * eDP not supported on g4x. so bail out early just |
||
5213 | * for a bit extra safety in case the VBT is bonkers. |
||
5214 | */ |
||
5215 | if (INTEL_INFO(dev)->gen < 5) |
||
5216 | return false; |
||
5217 | |||
4560 | Serge | 5218 | if (port == PORT_A) |
5219 | return true; |
||
5220 | |||
4104 | Serge | 5221 | if (!dev_priv->vbt.child_dev_num) |
2330 | Serge | 5222 | return false; |
5223 | |||
4104 | Serge | 5224 | for (i = 0; i < dev_priv->vbt.child_dev_num; i++) { |
5225 | p_child = dev_priv->vbt.child_dev + i; |
||
2330 | Serge | 5226 | |
4560 | Serge | 5227 | if (p_child->common.dvo_port == port_mapping[port] && |
5228 | (p_child->common.device_type & DEVICE_TYPE_eDP_BITS) == |
||
5229 | (DEVICE_TYPE_eDP & DEVICE_TYPE_eDP_BITS)) |
||
2330 | Serge | 5230 | return true; |
5231 | } |
||
5232 | return false; |
||
5233 | } |
||
5234 | |||
5060 | serge | 5235 | void |
2330 | Serge | 5236 | intel_dp_add_properties(struct intel_dp *intel_dp, struct drm_connector *connector) |
5237 | { |
||
3243 | Serge | 5238 | struct intel_connector *intel_connector = to_intel_connector(connector); |
5239 | |||
2330 | Serge | 5240 | intel_attach_force_audio_property(connector); |
5241 | intel_attach_broadcast_rgb_property(connector); |
||
3480 | Serge | 5242 | intel_dp->color_range_auto = true; |
3243 | Serge | 5243 | |
5244 | if (is_edp(intel_dp)) { |
||
5245 | drm_mode_create_scaling_mode_property(connector->dev); |
||
5246 | drm_object_attach_property( |
||
5247 | &connector->base, |
||
5248 | connector->dev->mode_config.scaling_mode_property, |
||
5249 | DRM_MODE_SCALE_ASPECT); |
||
5250 | intel_connector->panel.fitting_mode = DRM_MODE_SCALE_ASPECT; |
||
5251 | } |
||
2330 | Serge | 5252 | } |
5253 | |||
5060 | serge | 5254 | static void intel_dp_init_panel_power_timestamps(struct intel_dp *intel_dp) |
5255 | { |
||
5256 | intel_dp->last_power_cycle = jiffies; |
||
5257 | intel_dp->last_power_on = jiffies; |
||
5258 | intel_dp->last_backlight_off = jiffies; |
||
5259 | } |
||
5260 | |||
3243 | Serge | 5261 | static void |
5262 | intel_dp_init_panel_power_sequencer(struct drm_device *dev, |
||
5354 | serge | 5263 | struct intel_dp *intel_dp) |
3243 | Serge | 5264 | { |
5265 | struct drm_i915_private *dev_priv = dev->dev_private; |
||
5354 | serge | 5266 | struct edp_power_seq cur, vbt, spec, |
5267 | *final = &intel_dp->pps_delays; |
||
6084 | serge | 5268 | u32 pp_on, pp_off, pp_div = 0, pp_ctl = 0; |
5269 | int pp_ctrl_reg, pp_on_reg, pp_off_reg, pp_div_reg = 0; |
||
3243 | Serge | 5270 | |
5354 | serge | 5271 | lockdep_assert_held(&dev_priv->pps_mutex); |
5272 | |||
5273 | /* already initialized? */ |
||
5274 | if (final->t11_t12 != 0) |
||
5275 | return; |
||
5276 | |||
6084 | serge | 5277 | if (IS_BROXTON(dev)) { |
5278 | /* |
||
5279 | * TODO: BXT has 2 sets of PPS registers. |
||
5280 | * Correct Register for Broxton need to be identified |
||
5281 | * using VBT. hardcoding for now |
||
5282 | */ |
||
5283 | pp_ctrl_reg = BXT_PP_CONTROL(0); |
||
5284 | pp_on_reg = BXT_PP_ON_DELAYS(0); |
||
5285 | pp_off_reg = BXT_PP_OFF_DELAYS(0); |
||
5286 | } else if (HAS_PCH_SPLIT(dev)) { |
||
4560 | Serge | 5287 | pp_ctrl_reg = PCH_PP_CONTROL; |
3746 | Serge | 5288 | pp_on_reg = PCH_PP_ON_DELAYS; |
5289 | pp_off_reg = PCH_PP_OFF_DELAYS; |
||
5290 | pp_div_reg = PCH_PP_DIVISOR; |
||
5291 | } else { |
||
4560 | Serge | 5292 | enum pipe pipe = vlv_power_sequencer_pipe(intel_dp); |
5293 | |||
5294 | pp_ctrl_reg = VLV_PIPE_PP_CONTROL(pipe); |
||
5295 | pp_on_reg = VLV_PIPE_PP_ON_DELAYS(pipe); |
||
5296 | pp_off_reg = VLV_PIPE_PP_OFF_DELAYS(pipe); |
||
5297 | pp_div_reg = VLV_PIPE_PP_DIVISOR(pipe); |
||
3746 | Serge | 5298 | } |
5299 | |||
3243 | Serge | 5300 | /* Workaround: Need to write PP_CONTROL with the unlock key as |
5301 | * the very first thing. */ |
||
6084 | serge | 5302 | pp_ctl = ironlake_get_pp_control(intel_dp); |
3243 | Serge | 5303 | |
3746 | Serge | 5304 | pp_on = I915_READ(pp_on_reg); |
5305 | pp_off = I915_READ(pp_off_reg); |
||
6084 | serge | 5306 | if (!IS_BROXTON(dev)) { |
5307 | I915_WRITE(pp_ctrl_reg, pp_ctl); |
||
5308 | pp_div = I915_READ(pp_div_reg); |
||
5309 | } |
||
3243 | Serge | 5310 | |
5311 | /* Pull timing values out of registers */ |
||
5312 | cur.t1_t3 = (pp_on & PANEL_POWER_UP_DELAY_MASK) >> |
||
5313 | PANEL_POWER_UP_DELAY_SHIFT; |
||
5314 | |||
5315 | cur.t8 = (pp_on & PANEL_LIGHT_ON_DELAY_MASK) >> |
||
5316 | PANEL_LIGHT_ON_DELAY_SHIFT; |
||
5317 | |||
5318 | cur.t9 = (pp_off & PANEL_LIGHT_OFF_DELAY_MASK) >> |
||
5319 | PANEL_LIGHT_OFF_DELAY_SHIFT; |
||
5320 | |||
5321 | cur.t10 = (pp_off & PANEL_POWER_DOWN_DELAY_MASK) >> |
||
5322 | PANEL_POWER_DOWN_DELAY_SHIFT; |
||
5323 | |||
6084 | serge | 5324 | if (IS_BROXTON(dev)) { |
5325 | u16 tmp = (pp_ctl & BXT_POWER_CYCLE_DELAY_MASK) >> |
||
5326 | BXT_POWER_CYCLE_DELAY_SHIFT; |
||
5327 | if (tmp > 0) |
||
5328 | cur.t11_t12 = (tmp - 1) * 1000; |
||
5329 | else |
||
5330 | cur.t11_t12 = 0; |
||
5331 | } else { |
||
5332 | cur.t11_t12 = ((pp_div & PANEL_POWER_CYCLE_DELAY_MASK) >> |
||
3243 | Serge | 5333 | PANEL_POWER_CYCLE_DELAY_SHIFT) * 1000; |
6084 | serge | 5334 | } |
3243 | Serge | 5335 | |
5336 | DRM_DEBUG_KMS("cur t1_t3 %d t8 %d t9 %d t10 %d t11_t12 %d\n", |
||
5337 | cur.t1_t3, cur.t8, cur.t9, cur.t10, cur.t11_t12); |
||
5338 | |||
4104 | Serge | 5339 | vbt = dev_priv->vbt.edp_pps; |
3243 | Serge | 5340 | |
5341 | /* Upper limits from eDP 1.3 spec. Note that we use the clunky units of |
||
5342 | * our hw here, which are all in 100usec. */ |
||
5343 | spec.t1_t3 = 210 * 10; |
||
5344 | spec.t8 = 50 * 10; /* no limit for t8, use t7 instead */ |
||
5345 | spec.t9 = 50 * 10; /* no limit for t9, make it symmetric with t8 */ |
||
5346 | spec.t10 = 500 * 10; |
||
5347 | /* This one is special and actually in units of 100ms, but zero |
||
5348 | * based in the hw (so we need to add 100 ms). But the sw vbt |
||
5349 | * table multiplies it with 1000 to make it in units of 100usec, |
||
5350 | * too. */ |
||
5351 | spec.t11_t12 = (510 + 100) * 10; |
||
5352 | |||
5353 | DRM_DEBUG_KMS("vbt t1_t3 %d t8 %d t9 %d t10 %d t11_t12 %d\n", |
||
5354 | vbt.t1_t3, vbt.t8, vbt.t9, vbt.t10, vbt.t11_t12); |
||
5355 | |||
5356 | /* Use the max of the register settings and vbt. If both are |
||
5357 | * unset, fall back to the spec limits. */ |
||
5354 | serge | 5358 | #define assign_final(field) final->field = (max(cur.field, vbt.field) == 0 ? \ |
3243 | Serge | 5359 | spec.field : \ |
5360 | max(cur.field, vbt.field)) |
||
5361 | assign_final(t1_t3); |
||
5362 | assign_final(t8); |
||
5363 | assign_final(t9); |
||
5364 | assign_final(t10); |
||
5365 | assign_final(t11_t12); |
||
5366 | #undef assign_final |
||
5367 | |||
5354 | serge | 5368 | #define get_delay(field) (DIV_ROUND_UP(final->field, 10)) |
3243 | Serge | 5369 | intel_dp->panel_power_up_delay = get_delay(t1_t3); |
5370 | intel_dp->backlight_on_delay = get_delay(t8); |
||
5371 | intel_dp->backlight_off_delay = get_delay(t9); |
||
5372 | intel_dp->panel_power_down_delay = get_delay(t10); |
||
5373 | intel_dp->panel_power_cycle_delay = get_delay(t11_t12); |
||
5374 | #undef get_delay |
||
5375 | |||
5376 | DRM_DEBUG_KMS("panel power up delay %d, power down delay %d, power cycle delay %d\n", |
||
5377 | intel_dp->panel_power_up_delay, intel_dp->panel_power_down_delay, |
||
5378 | intel_dp->panel_power_cycle_delay); |
||
5379 | |||
5380 | DRM_DEBUG_KMS("backlight on delay %d, off delay %d\n", |
||
5381 | intel_dp->backlight_on_delay, intel_dp->backlight_off_delay); |
||
5382 | } |
||
5383 | |||
5384 | static void |
||
5385 | intel_dp_init_panel_power_sequencer_registers(struct drm_device *dev, |
||
5354 | serge | 5386 | struct intel_dp *intel_dp) |
3243 | Serge | 5387 | { |
5388 | struct drm_i915_private *dev_priv = dev->dev_private; |
||
3746 | Serge | 5389 | u32 pp_on, pp_off, pp_div, port_sel = 0; |
5390 | int div = HAS_PCH_SPLIT(dev) ? intel_pch_rawclk(dev) : intel_hrawclk(dev); |
||
6084 | serge | 5391 | int pp_on_reg, pp_off_reg, pp_div_reg = 0, pp_ctrl_reg; |
5354 | serge | 5392 | enum port port = dp_to_dig_port(intel_dp)->port; |
5393 | const struct edp_power_seq *seq = &intel_dp->pps_delays; |
||
3243 | Serge | 5394 | |
5354 | serge | 5395 | lockdep_assert_held(&dev_priv->pps_mutex); |
5396 | |||
6084 | serge | 5397 | if (IS_BROXTON(dev)) { |
5398 | /* |
||
5399 | * TODO: BXT has 2 sets of PPS registers. |
||
5400 | * Correct Register for Broxton need to be identified |
||
5401 | * using VBT. hardcoding for now |
||
5402 | */ |
||
5403 | pp_ctrl_reg = BXT_PP_CONTROL(0); |
||
5404 | pp_on_reg = BXT_PP_ON_DELAYS(0); |
||
5405 | pp_off_reg = BXT_PP_OFF_DELAYS(0); |
||
5406 | |||
5407 | } else if (HAS_PCH_SPLIT(dev)) { |
||
3746 | Serge | 5408 | pp_on_reg = PCH_PP_ON_DELAYS; |
5409 | pp_off_reg = PCH_PP_OFF_DELAYS; |
||
5410 | pp_div_reg = PCH_PP_DIVISOR; |
||
5411 | } else { |
||
4560 | Serge | 5412 | enum pipe pipe = vlv_power_sequencer_pipe(intel_dp); |
5413 | |||
5414 | pp_on_reg = VLV_PIPE_PP_ON_DELAYS(pipe); |
||
5415 | pp_off_reg = VLV_PIPE_PP_OFF_DELAYS(pipe); |
||
5416 | pp_div_reg = VLV_PIPE_PP_DIVISOR(pipe); |
||
3746 | Serge | 5417 | } |
5418 | |||
5060 | serge | 5419 | /* |
5420 | * And finally store the new values in the power sequencer. The |
||
5421 | * backlight delays are set to 1 because we do manual waits on them. For |
||
5422 | * T8, even BSpec recommends doing it. For T9, if we don't do this, |
||
5423 | * we'll end up waiting for the backlight off delay twice: once when we |
||
5424 | * do the manual sleep, and once when we disable the panel and wait for |
||
5425 | * the PP_STATUS bit to become zero. |
||
5426 | */ |
||
3243 | Serge | 5427 | pp_on = (seq->t1_t3 << PANEL_POWER_UP_DELAY_SHIFT) | |
5060 | serge | 5428 | (1 << PANEL_LIGHT_ON_DELAY_SHIFT); |
5429 | pp_off = (1 << PANEL_LIGHT_OFF_DELAY_SHIFT) | |
||
3243 | Serge | 5430 | (seq->t10 << PANEL_POWER_DOWN_DELAY_SHIFT); |
5431 | /* Compute the divisor for the pp clock, simply match the Bspec |
||
5432 | * formula. */ |
||
6084 | serge | 5433 | if (IS_BROXTON(dev)) { |
5434 | pp_div = I915_READ(pp_ctrl_reg); |
||
5435 | pp_div &= ~BXT_POWER_CYCLE_DELAY_MASK; |
||
5436 | pp_div |= (DIV_ROUND_UP((seq->t11_t12 + 1), 1000) |
||
5437 | << BXT_POWER_CYCLE_DELAY_SHIFT); |
||
5438 | } else { |
||
5439 | pp_div = ((100 * div)/2 - 1) << PP_REFERENCE_DIVIDER_SHIFT; |
||
5440 | pp_div |= (DIV_ROUND_UP(seq->t11_t12, 1000) |
||
5441 | << PANEL_POWER_CYCLE_DELAY_SHIFT); |
||
5442 | } |
||
3243 | Serge | 5443 | |
5444 | /* Haswell doesn't have any port selection bits for the panel |
||
5445 | * power sequencer any more. */ |
||
4104 | Serge | 5446 | if (IS_VALLEYVIEW(dev)) { |
5354 | serge | 5447 | port_sel = PANEL_PORT_SELECT_VLV(port); |
4104 | Serge | 5448 | } else if (HAS_PCH_IBX(dev) || HAS_PCH_CPT(dev)) { |
5354 | serge | 5449 | if (port == PORT_A) |
4560 | Serge | 5450 | port_sel = PANEL_PORT_SELECT_DPA; |
3243 | Serge | 5451 | else |
4560 | Serge | 5452 | port_sel = PANEL_PORT_SELECT_DPD; |
3243 | Serge | 5453 | } |
5454 | |||
3746 | Serge | 5455 | pp_on |= port_sel; |
3243 | Serge | 5456 | |
3746 | Serge | 5457 | I915_WRITE(pp_on_reg, pp_on); |
5458 | I915_WRITE(pp_off_reg, pp_off); |
||
6084 | serge | 5459 | if (IS_BROXTON(dev)) |
5460 | I915_WRITE(pp_ctrl_reg, pp_div); |
||
5461 | else |
||
5462 | I915_WRITE(pp_div_reg, pp_div); |
||
3746 | Serge | 5463 | |
3243 | Serge | 5464 | DRM_DEBUG_KMS("panel power sequencer register settings: PP_ON %#x, PP_OFF %#x, PP_DIV %#x\n", |
3746 | Serge | 5465 | I915_READ(pp_on_reg), |
5466 | I915_READ(pp_off_reg), |
||
6084 | serge | 5467 | IS_BROXTON(dev) ? |
5468 | (I915_READ(pp_ctrl_reg) & BXT_POWER_CYCLE_DELAY_MASK) : |
||
3746 | Serge | 5469 | I915_READ(pp_div_reg)); |
3243 | Serge | 5470 | } |
5471 | |||
6084 | serge | 5472 | /** |
5473 | * intel_dp_set_drrs_state - program registers for RR switch to take effect |
||
5474 | * @dev: DRM device |
||
5475 | * @refresh_rate: RR to be programmed |
||
5476 | * |
||
5477 | * This function gets called when refresh rate (RR) has to be changed from |
||
5478 | * one frequency to another. Switches can be between high and low RR |
||
5479 | * supported by the panel or to any other RR based on media playback (in |
||
5480 | * this case, RR value needs to be passed from user space). |
||
5481 | * |
||
5482 | * The caller of this function needs to take a lock on dev_priv->drrs. |
||
5483 | */ |
||
5484 | static void intel_dp_set_drrs_state(struct drm_device *dev, int refresh_rate) |
||
5060 | serge | 5485 | { |
5486 | struct drm_i915_private *dev_priv = dev->dev_private; |
||
5487 | struct intel_encoder *encoder; |
||
6084 | serge | 5488 | struct intel_digital_port *dig_port = NULL; |
5489 | struct intel_dp *intel_dp = dev_priv->drrs.dp; |
||
5490 | struct intel_crtc_state *config = NULL; |
||
5060 | serge | 5491 | struct intel_crtc *intel_crtc = NULL; |
6084 | serge | 5492 | enum drrs_refresh_rate_type index = DRRS_HIGH_RR; |
5060 | serge | 5493 | |
5494 | if (refresh_rate <= 0) { |
||
5495 | DRM_DEBUG_KMS("Refresh rate should be positive non-zero.\n"); |
||
5496 | return; |
||
5497 | } |
||
5498 | |||
6084 | serge | 5499 | if (intel_dp == NULL) { |
5500 | DRM_DEBUG_KMS("DRRS not supported.\n"); |
||
5060 | serge | 5501 | return; |
5502 | } |
||
5503 | |||
5504 | /* |
||
6084 | serge | 5505 | * FIXME: This needs proper synchronization with psr state for some |
5506 | * platforms that cannot have PSR and DRRS enabled at the same time. |
||
5060 | serge | 5507 | */ |
5508 | |||
6084 | serge | 5509 | dig_port = dp_to_dig_port(intel_dp); |
5510 | encoder = &dig_port->base; |
||
5511 | intel_crtc = to_intel_crtc(encoder->base.crtc); |
||
5060 | serge | 5512 | |
5513 | if (!intel_crtc) { |
||
5514 | DRM_DEBUG_KMS("DRRS: intel_crtc not initialized\n"); |
||
5515 | return; |
||
5516 | } |
||
5517 | |||
6084 | serge | 5518 | config = intel_crtc->config; |
5060 | serge | 5519 | |
6084 | serge | 5520 | if (dev_priv->drrs.type < SEAMLESS_DRRS_SUPPORT) { |
5060 | serge | 5521 | DRM_DEBUG_KMS("Only Seamless DRRS supported.\n"); |
5522 | return; |
||
5523 | } |
||
5524 | |||
6084 | serge | 5525 | if (intel_dp->attached_connector->panel.downclock_mode->vrefresh == |
5526 | refresh_rate) |
||
5060 | serge | 5527 | index = DRRS_LOW_RR; |
5528 | |||
6084 | serge | 5529 | if (index == dev_priv->drrs.refresh_rate_type) { |
5060 | serge | 5530 | DRM_DEBUG_KMS( |
5531 | "DRRS requested for previously set RR...ignoring\n"); |
||
5532 | return; |
||
5533 | } |
||
5534 | |||
5535 | if (!intel_crtc->active) { |
||
5536 | DRM_DEBUG_KMS("eDP encoder disabled. CRTC not Active\n"); |
||
5537 | return; |
||
5538 | } |
||
5539 | |||
6084 | serge | 5540 | if (INTEL_INFO(dev)->gen >= 8 && !IS_CHERRYVIEW(dev)) { |
5541 | switch (index) { |
||
5542 | case DRRS_HIGH_RR: |
||
5543 | intel_dp_set_m_n(intel_crtc, M1_N1); |
||
5544 | break; |
||
5545 | case DRRS_LOW_RR: |
||
5546 | intel_dp_set_m_n(intel_crtc, M2_N2); |
||
5547 | break; |
||
5548 | case DRRS_MAX_RR: |
||
5549 | default: |
||
5550 | DRM_ERROR("Unsupported refreshrate type\n"); |
||
5551 | } |
||
5552 | } else if (INTEL_INFO(dev)->gen > 6) { |
||
5553 | u32 reg = PIPECONF(intel_crtc->config->cpu_transcoder); |
||
5554 | u32 val; |
||
5555 | |||
5060 | serge | 5556 | val = I915_READ(reg); |
5557 | if (index > DRRS_HIGH_RR) { |
||
6084 | serge | 5558 | if (IS_VALLEYVIEW(dev)) |
5559 | val |= PIPECONF_EDP_RR_MODE_SWITCH_VLV; |
||
5560 | else |
||
5561 | val |= PIPECONF_EDP_RR_MODE_SWITCH; |
||
5060 | serge | 5562 | } else { |
6084 | serge | 5563 | if (IS_VALLEYVIEW(dev)) |
5564 | val &= ~PIPECONF_EDP_RR_MODE_SWITCH_VLV; |
||
5565 | else |
||
5566 | val &= ~PIPECONF_EDP_RR_MODE_SWITCH; |
||
5060 | serge | 5567 | } |
5568 | I915_WRITE(reg, val); |
||
5569 | } |
||
5570 | |||
6084 | serge | 5571 | dev_priv->drrs.refresh_rate_type = index; |
5572 | |||
5573 | DRM_DEBUG_KMS("eDP Refresh Rate set to : %dHz\n", refresh_rate); |
||
5574 | } |
||
5575 | |||
5576 | /** |
||
5577 | * intel_edp_drrs_enable - init drrs struct if supported |
||
5578 | * @intel_dp: DP struct |
||
5579 | * |
||
5580 | * Initializes frontbuffer_bits and drrs.dp |
||
5581 | */ |
||
5582 | void intel_edp_drrs_enable(struct intel_dp *intel_dp) |
||
5583 | { |
||
5584 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
||
5585 | struct drm_i915_private *dev_priv = dev->dev_private; |
||
5586 | struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp); |
||
5587 | struct drm_crtc *crtc = dig_port->base.base.crtc; |
||
5588 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); |
||
5589 | |||
5590 | if (!intel_crtc->config->has_drrs) { |
||
5591 | DRM_DEBUG_KMS("Panel doesn't support DRRS\n"); |
||
5592 | return; |
||
5593 | } |
||
5594 | |||
5595 | mutex_lock(&dev_priv->drrs.mutex); |
||
5596 | if (WARN_ON(dev_priv->drrs.dp)) { |
||
5597 | DRM_ERROR("DRRS already enabled\n"); |
||
5598 | goto unlock; |
||
5599 | } |
||
5600 | |||
5601 | dev_priv->drrs.busy_frontbuffer_bits = 0; |
||
5602 | |||
5603 | dev_priv->drrs.dp = intel_dp; |
||
5604 | |||
5605 | unlock: |
||
5606 | mutex_unlock(&dev_priv->drrs.mutex); |
||
5607 | } |
||
5608 | |||
5609 | /** |
||
5610 | * intel_edp_drrs_disable - Disable DRRS |
||
5611 | * @intel_dp: DP struct |
||
5612 | * |
||
5613 | */ |
||
5614 | void intel_edp_drrs_disable(struct intel_dp *intel_dp) |
||
5615 | { |
||
5616 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
||
5617 | struct drm_i915_private *dev_priv = dev->dev_private; |
||
5618 | struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp); |
||
5619 | struct drm_crtc *crtc = dig_port->base.base.crtc; |
||
5620 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); |
||
5621 | |||
5622 | if (!intel_crtc->config->has_drrs) |
||
5623 | return; |
||
5624 | |||
5625 | mutex_lock(&dev_priv->drrs.mutex); |
||
5626 | if (!dev_priv->drrs.dp) { |
||
5627 | mutex_unlock(&dev_priv->drrs.mutex); |
||
5628 | return; |
||
5629 | } |
||
5630 | |||
5631 | if (dev_priv->drrs.refresh_rate_type == DRRS_LOW_RR) |
||
5632 | intel_dp_set_drrs_state(dev_priv->dev, |
||
5633 | intel_dp->attached_connector->panel. |
||
5634 | fixed_mode->vrefresh); |
||
5635 | |||
5636 | dev_priv->drrs.dp = NULL; |
||
5637 | mutex_unlock(&dev_priv->drrs.mutex); |
||
5638 | |||
5639 | cancel_delayed_work_sync(&dev_priv->drrs.work); |
||
5640 | } |
||
5641 | |||
5642 | static void intel_edp_drrs_downclock_work(struct work_struct *work) |
||
5643 | { |
||
5644 | struct drm_i915_private *dev_priv = |
||
5645 | container_of(work, typeof(*dev_priv), drrs.work.work); |
||
5646 | struct intel_dp *intel_dp; |
||
5647 | |||
5648 | mutex_lock(&dev_priv->drrs.mutex); |
||
5649 | |||
5650 | intel_dp = dev_priv->drrs.dp; |
||
5651 | |||
5652 | if (!intel_dp) |
||
5653 | goto unlock; |
||
5654 | |||
5060 | serge | 5655 | /* |
6084 | serge | 5656 | * The delayed work can race with an invalidate hence we need to |
5657 | * recheck. |
||
5060 | serge | 5658 | */ |
5659 | |||
6084 | serge | 5660 | if (dev_priv->drrs.busy_frontbuffer_bits) |
5661 | goto unlock; |
||
5060 | serge | 5662 | |
6084 | serge | 5663 | if (dev_priv->drrs.refresh_rate_type != DRRS_LOW_RR) |
5664 | intel_dp_set_drrs_state(dev_priv->dev, |
||
5665 | intel_dp->attached_connector->panel. |
||
5666 | downclock_mode->vrefresh); |
||
5060 | serge | 5667 | |
6084 | serge | 5668 | unlock: |
5669 | mutex_unlock(&dev_priv->drrs.mutex); |
||
5670 | } |
||
5060 | serge | 5671 | |
6084 | serge | 5672 | /** |
5673 | * intel_edp_drrs_invalidate - Disable Idleness DRRS |
||
5674 | * @dev: DRM device |
||
5675 | * @frontbuffer_bits: frontbuffer plane tracking bits |
||
5676 | * |
||
5677 | * This function gets called everytime rendering on the given planes start. |
||
5678 | * Hence DRRS needs to be Upclocked, i.e. (LOW_RR -> HIGH_RR). |
||
5679 | * |
||
5680 | * Dirty frontbuffers relevant to DRRS are tracked in busy_frontbuffer_bits. |
||
5681 | */ |
||
5682 | void intel_edp_drrs_invalidate(struct drm_device *dev, |
||
5683 | unsigned frontbuffer_bits) |
||
5684 | { |
||
5685 | struct drm_i915_private *dev_priv = dev->dev_private; |
||
5686 | struct drm_crtc *crtc; |
||
5687 | enum pipe pipe; |
||
5688 | |||
5689 | if (dev_priv->drrs.type == DRRS_NOT_SUPPORTED) |
||
5690 | return; |
||
5691 | |||
5692 | cancel_delayed_work(&dev_priv->drrs.work); |
||
5693 | |||
5694 | mutex_lock(&dev_priv->drrs.mutex); |
||
5695 | if (!dev_priv->drrs.dp) { |
||
5696 | mutex_unlock(&dev_priv->drrs.mutex); |
||
5697 | return; |
||
5698 | } |
||
5699 | |||
5700 | crtc = dp_to_dig_port(dev_priv->drrs.dp)->base.base.crtc; |
||
5701 | pipe = to_intel_crtc(crtc)->pipe; |
||
5702 | |||
5703 | frontbuffer_bits &= INTEL_FRONTBUFFER_ALL_MASK(pipe); |
||
5704 | dev_priv->drrs.busy_frontbuffer_bits |= frontbuffer_bits; |
||
5705 | |||
5706 | /* invalidate means busy screen hence upclock */ |
||
5707 | if (frontbuffer_bits && dev_priv->drrs.refresh_rate_type == DRRS_LOW_RR) |
||
5708 | intel_dp_set_drrs_state(dev_priv->dev, |
||
5709 | dev_priv->drrs.dp->attached_connector->panel. |
||
5710 | fixed_mode->vrefresh); |
||
5711 | |||
5712 | mutex_unlock(&dev_priv->drrs.mutex); |
||
5060 | serge | 5713 | } |
5714 | |||
6084 | serge | 5715 | /** |
5716 | * intel_edp_drrs_flush - Restart Idleness DRRS |
||
5717 | * @dev: DRM device |
||
5718 | * @frontbuffer_bits: frontbuffer plane tracking bits |
||
5719 | * |
||
5720 | * This function gets called every time rendering on the given planes has |
||
5721 | * completed or flip on a crtc is completed. So DRRS should be upclocked |
||
5722 | * (LOW_RR -> HIGH_RR). And also Idleness detection should be started again, |
||
5723 | * if no other planes are dirty. |
||
5724 | * |
||
5725 | * Dirty frontbuffers relevant to DRRS are tracked in busy_frontbuffer_bits. |
||
5726 | */ |
||
5727 | void intel_edp_drrs_flush(struct drm_device *dev, |
||
5728 | unsigned frontbuffer_bits) |
||
5729 | { |
||
5730 | struct drm_i915_private *dev_priv = dev->dev_private; |
||
5731 | struct drm_crtc *crtc; |
||
5732 | enum pipe pipe; |
||
5733 | |||
5734 | if (dev_priv->drrs.type == DRRS_NOT_SUPPORTED) |
||
5735 | return; |
||
5736 | |||
6320 | serge | 5737 | cancel_delayed_work(&dev_priv->drrs.work); |
6084 | serge | 5738 | |
5739 | mutex_lock(&dev_priv->drrs.mutex); |
||
5740 | if (!dev_priv->drrs.dp) { |
||
5741 | mutex_unlock(&dev_priv->drrs.mutex); |
||
5742 | return; |
||
5743 | } |
||
5744 | |||
5745 | crtc = dp_to_dig_port(dev_priv->drrs.dp)->base.base.crtc; |
||
5746 | pipe = to_intel_crtc(crtc)->pipe; |
||
5747 | |||
5748 | frontbuffer_bits &= INTEL_FRONTBUFFER_ALL_MASK(pipe); |
||
5749 | dev_priv->drrs.busy_frontbuffer_bits &= ~frontbuffer_bits; |
||
5750 | |||
5751 | /* flush means busy screen hence upclock */ |
||
5752 | if (frontbuffer_bits && dev_priv->drrs.refresh_rate_type == DRRS_LOW_RR) |
||
5753 | intel_dp_set_drrs_state(dev_priv->dev, |
||
5754 | dev_priv->drrs.dp->attached_connector->panel. |
||
5755 | fixed_mode->vrefresh); |
||
5756 | |||
6320 | serge | 5757 | /* |
5758 | * flush also means no more activity hence schedule downclock, if all |
||
5759 | * other fbs are quiescent too |
||
5760 | */ |
||
5761 | if (!dev_priv->drrs.busy_frontbuffer_bits) |
||
5762 | schedule_delayed_work(&dev_priv->drrs.work, |
||
5763 | msecs_to_jiffies(1000)); |
||
6084 | serge | 5764 | mutex_unlock(&dev_priv->drrs.mutex); |
5765 | } |
||
5766 | |||
5767 | /** |
||
5768 | * DOC: Display Refresh Rate Switching (DRRS) |
||
5769 | * |
||
5770 | * Display Refresh Rate Switching (DRRS) is a power conservation feature |
||
5771 | * which enables swtching between low and high refresh rates, |
||
5772 | * dynamically, based on the usage scenario. This feature is applicable |
||
5773 | * for internal panels. |
||
5774 | * |
||
5775 | * Indication that the panel supports DRRS is given by the panel EDID, which |
||
5776 | * would list multiple refresh rates for one resolution. |
||
5777 | * |
||
5778 | * DRRS is of 2 types - static and seamless. |
||
5779 | * Static DRRS involves changing refresh rate (RR) by doing a full modeset |
||
5780 | * (may appear as a blink on screen) and is used in dock-undock scenario. |
||
5781 | * Seamless DRRS involves changing RR without any visual effect to the user |
||
5782 | * and can be used during normal system usage. This is done by programming |
||
5783 | * certain registers. |
||
5784 | * |
||
5785 | * Support for static/seamless DRRS may be indicated in the VBT based on |
||
5786 | * inputs from the panel spec. |
||
5787 | * |
||
5788 | * DRRS saves power by switching to low RR based on usage scenarios. |
||
5789 | * |
||
5790 | * eDP DRRS:- |
||
5791 | * The implementation is based on frontbuffer tracking implementation. |
||
5792 | * When there is a disturbance on the screen triggered by user activity or a |
||
5793 | * periodic system activity, DRRS is disabled (RR is changed to high RR). |
||
5794 | * When there is no movement on screen, after a timeout of 1 second, a switch |
||
5795 | * to low RR is made. |
||
5796 | * For integration with frontbuffer tracking code, |
||
5797 | * intel_edp_drrs_invalidate() and intel_edp_drrs_flush() are called. |
||
5798 | * |
||
5799 | * DRRS can be further extended to support other internal panels and also |
||
5800 | * the scenario of video playback wherein RR is set based on the rate |
||
5801 | * requested by userspace. |
||
5802 | */ |
||
5803 | |||
5804 | /** |
||
5805 | * intel_dp_drrs_init - Init basic DRRS work and mutex. |
||
5806 | * @intel_connector: eDP connector |
||
5807 | * @fixed_mode: preferred mode of panel |
||
5808 | * |
||
5809 | * This function is called only once at driver load to initialize basic |
||
5810 | * DRRS stuff. |
||
5811 | * |
||
5812 | * Returns: |
||
5813 | * Downclock mode if panel supports it, else return NULL. |
||
5814 | * DRRS support is determined by the presence of downclock mode (apart |
||
5815 | * from VBT setting). |
||
5816 | */ |
||
5060 | serge | 5817 | static struct drm_display_mode * |
6084 | serge | 5818 | intel_dp_drrs_init(struct intel_connector *intel_connector, |
5819 | struct drm_display_mode *fixed_mode) |
||
5060 | serge | 5820 | { |
5821 | struct drm_connector *connector = &intel_connector->base; |
||
6084 | serge | 5822 | struct drm_device *dev = connector->dev; |
5060 | serge | 5823 | struct drm_i915_private *dev_priv = dev->dev_private; |
5824 | struct drm_display_mode *downclock_mode = NULL; |
||
5825 | |||
6084 | serge | 5826 | INIT_DELAYED_WORK(&dev_priv->drrs.work, intel_edp_drrs_downclock_work); |
5827 | mutex_init(&dev_priv->drrs.mutex); |
||
5828 | |||
5060 | serge | 5829 | if (INTEL_INFO(dev)->gen <= 6) { |
5830 | DRM_DEBUG_KMS("DRRS supported for Gen7 and above\n"); |
||
5831 | return NULL; |
||
5832 | } |
||
5833 | |||
5834 | if (dev_priv->vbt.drrs_type != SEAMLESS_DRRS_SUPPORT) { |
||
5354 | serge | 5835 | DRM_DEBUG_KMS("VBT doesn't support DRRS\n"); |
5060 | serge | 5836 | return NULL; |
5837 | } |
||
5838 | |||
5839 | downclock_mode = intel_find_panel_downclock |
||
5840 | (dev, fixed_mode, connector); |
||
5841 | |||
5842 | if (!downclock_mode) { |
||
6084 | serge | 5843 | DRM_DEBUG_KMS("Downclock mode is not found. DRRS not supported\n"); |
5060 | serge | 5844 | return NULL; |
5845 | } |
||
5846 | |||
6084 | serge | 5847 | dev_priv->drrs.type = dev_priv->vbt.drrs_type; |
5060 | serge | 5848 | |
6084 | serge | 5849 | dev_priv->drrs.refresh_rate_type = DRRS_HIGH_RR; |
5354 | serge | 5850 | DRM_DEBUG_KMS("seamless DRRS supported for eDP panel.\n"); |
5060 | serge | 5851 | return downclock_mode; |
5852 | } |
||
5853 | |||
4104 | Serge | 5854 | static bool intel_edp_init_connector(struct intel_dp *intel_dp, |
5354 | serge | 5855 | struct intel_connector *intel_connector) |
4104 | Serge | 5856 | { |
5857 | struct drm_connector *connector = &intel_connector->base; |
||
5858 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
||
5060 | serge | 5859 | struct intel_encoder *intel_encoder = &intel_dig_port->base; |
5860 | struct drm_device *dev = intel_encoder->base.dev; |
||
4104 | Serge | 5861 | struct drm_i915_private *dev_priv = dev->dev_private; |
5862 | struct drm_display_mode *fixed_mode = NULL; |
||
5060 | serge | 5863 | struct drm_display_mode *downclock_mode = NULL; |
4104 | Serge | 5864 | bool has_dpcd; |
5865 | struct drm_display_mode *scan; |
||
5866 | struct edid *edid; |
||
5354 | serge | 5867 | enum pipe pipe = INVALID_PIPE; |
4104 | Serge | 5868 | |
5869 | if (!is_edp(intel_dp)) |
||
5870 | return true; |
||
5871 | |||
5354 | serge | 5872 | pps_lock(intel_dp); |
5873 | intel_edp_panel_vdd_sanitize(intel_dp); |
||
5874 | pps_unlock(intel_dp); |
||
4104 | Serge | 5875 | |
5876 | /* Cache DPCD and EDID for edp. */ |
||
5877 | has_dpcd = intel_dp_get_dpcd(intel_dp); |
||
5878 | |||
5879 | if (has_dpcd) { |
||
5880 | if (intel_dp->dpcd[DP_DPCD_REV] >= 0x11) |
||
5881 | dev_priv->no_aux_handshake = |
||
5882 | intel_dp->dpcd[DP_MAX_DOWNSPREAD] & |
||
5883 | DP_NO_AUX_HANDSHAKE_LINK_TRAINING; |
||
5884 | } else { |
||
5885 | /* if this fails, presume the device is a ghost */ |
||
5886 | DRM_INFO("failed to retrieve link info, disabling eDP\n"); |
||
5887 | return false; |
||
5888 | } |
||
5889 | |||
5890 | /* We now know it's not a ghost, init power sequence regs. */ |
||
5354 | serge | 5891 | pps_lock(intel_dp); |
5892 | intel_dp_init_panel_power_sequencer_registers(dev, intel_dp); |
||
5893 | pps_unlock(intel_dp); |
||
4104 | Serge | 5894 | |
5060 | serge | 5895 | mutex_lock(&dev->mode_config.mutex); |
5896 | edid = drm_get_edid(connector, &intel_dp->aux.ddc); |
||
4104 | Serge | 5897 | if (edid) { |
5898 | if (drm_add_edid_modes(connector, edid)) { |
||
5899 | drm_mode_connector_update_edid_property(connector, |
||
5900 | edid); |
||
5901 | drm_edid_to_eld(connector, edid); |
||
5902 | } else { |
||
5903 | kfree(edid); |
||
5904 | edid = ERR_PTR(-EINVAL); |
||
5905 | } |
||
5906 | } else { |
||
5907 | edid = ERR_PTR(-ENOENT); |
||
5908 | } |
||
5909 | intel_connector->edid = edid; |
||
5910 | |||
5911 | /* prefer fixed mode from EDID if available */ |
||
5912 | list_for_each_entry(scan, &connector->probed_modes, head) { |
||
5913 | if ((scan->type & DRM_MODE_TYPE_PREFERRED)) { |
||
5914 | fixed_mode = drm_mode_duplicate(dev, scan); |
||
5060 | serge | 5915 | downclock_mode = intel_dp_drrs_init( |
5916 | intel_connector, fixed_mode); |
||
4104 | Serge | 5917 | break; |
5918 | } |
||
5919 | } |
||
5920 | |||
5921 | /* fallback to VBT if available for eDP */ |
||
5922 | if (!fixed_mode && dev_priv->vbt.lfp_lvds_vbt_mode) { |
||
5923 | fixed_mode = drm_mode_duplicate(dev, |
||
5924 | dev_priv->vbt.lfp_lvds_vbt_mode); |
||
5925 | if (fixed_mode) |
||
5926 | fixed_mode->type |= DRM_MODE_TYPE_PREFERRED; |
||
5927 | } |
||
5060 | serge | 5928 | mutex_unlock(&dev->mode_config.mutex); |
4104 | Serge | 5929 | |
5354 | serge | 5930 | if (IS_VALLEYVIEW(dev)) { |
5931 | |||
5932 | /* |
||
5933 | * Figure out the current pipe for the initial backlight setup. |
||
5934 | * If the current pipe isn't valid, try the PPS pipe, and if that |
||
5935 | * fails just assume pipe A. |
||
5936 | */ |
||
5937 | if (IS_CHERRYVIEW(dev)) |
||
5938 | pipe = DP_PORT_TO_PIPE_CHV(intel_dp->DP); |
||
5939 | else |
||
5940 | pipe = PORT_TO_PIPE(intel_dp->DP); |
||
5941 | |||
5942 | if (pipe != PIPE_A && pipe != PIPE_B) |
||
5943 | pipe = intel_dp->pps_pipe; |
||
5944 | |||
5945 | if (pipe != PIPE_A && pipe != PIPE_B) |
||
5946 | pipe = PIPE_A; |
||
5947 | |||
5948 | DRM_DEBUG_KMS("using pipe %c for initial backlight setup\n", |
||
5949 | pipe_name(pipe)); |
||
5950 | } |
||
5951 | |||
5060 | serge | 5952 | intel_panel_init(&intel_connector->panel, fixed_mode, downclock_mode); |
6084 | serge | 5953 | intel_connector->panel.backlight.power = intel_edp_backlight_power; |
5354 | serge | 5954 | intel_panel_setup_backlight(connector, pipe); |
4104 | Serge | 5955 | |
5956 | return true; |
||
5957 | } |
||
5958 | |||
5959 | bool |
||
3243 | Serge | 5960 | intel_dp_init_connector(struct intel_digital_port *intel_dig_port, |
5961 | struct intel_connector *intel_connector) |
||
2330 | Serge | 5962 | { |
3243 | Serge | 5963 | struct drm_connector *connector = &intel_connector->base; |
5964 | struct intel_dp *intel_dp = &intel_dig_port->dp; |
||
5965 | struct intel_encoder *intel_encoder = &intel_dig_port->base; |
||
5966 | struct drm_device *dev = intel_encoder->base.dev; |
||
2330 | Serge | 5967 | struct drm_i915_private *dev_priv = dev->dev_private; |
3243 | Serge | 5968 | enum port port = intel_dig_port->port; |
5060 | serge | 5969 | int type; |
2330 | Serge | 5970 | |
5354 | serge | 5971 | intel_dp->pps_pipe = INVALID_PIPE; |
5972 | |||
5060 | serge | 5973 | /* intel_dp vfuncs */ |
5354 | serge | 5974 | if (INTEL_INFO(dev)->gen >= 9) |
5975 | intel_dp->get_aux_clock_divider = skl_get_aux_clock_divider; |
||
5976 | else if (IS_VALLEYVIEW(dev)) |
||
5060 | serge | 5977 | intel_dp->get_aux_clock_divider = vlv_get_aux_clock_divider; |
5978 | else if (IS_HASWELL(dev) || IS_BROADWELL(dev)) |
||
5979 | intel_dp->get_aux_clock_divider = hsw_get_aux_clock_divider; |
||
5980 | else if (HAS_PCH_SPLIT(dev)) |
||
5981 | intel_dp->get_aux_clock_divider = ilk_get_aux_clock_divider; |
||
5982 | else |
||
5983 | intel_dp->get_aux_clock_divider = i9xx_get_aux_clock_divider; |
||
5984 | |||
5354 | serge | 5985 | if (INTEL_INFO(dev)->gen >= 9) |
5986 | intel_dp->get_aux_send_ctl = skl_get_aux_send_ctl; |
||
5987 | else |
||
6084 | serge | 5988 | intel_dp->get_aux_send_ctl = i9xx_get_aux_send_ctl; |
5060 | serge | 5989 | |
3031 | serge | 5990 | /* Preserve the current hw state. */ |
5991 | intel_dp->DP = I915_READ(intel_dp->output_reg); |
||
3243 | Serge | 5992 | intel_dp->attached_connector = intel_connector; |
2330 | Serge | 5993 | |
4560 | Serge | 5994 | if (intel_dp_is_edp(dev, port)) |
5995 | type = DRM_MODE_CONNECTOR_eDP; |
||
5996 | else |
||
6084 | serge | 5997 | type = DRM_MODE_CONNECTOR_DisplayPort; |
2330 | Serge | 5998 | |
4104 | Serge | 5999 | /* |
6000 | * For eDP we always set the encoder type to INTEL_OUTPUT_EDP, but |
||
6001 | * for DP the encoder type can be set by the caller to |
||
6002 | * INTEL_OUTPUT_UNKNOWN for DDI, so don't rewrite it. |
||
6003 | */ |
||
6004 | if (type == DRM_MODE_CONNECTOR_eDP) |
||
6005 | intel_encoder->type = INTEL_OUTPUT_EDP; |
||
6006 | |||
5354 | serge | 6007 | /* eDP only on port B and/or C on vlv/chv */ |
6008 | if (WARN_ON(IS_VALLEYVIEW(dev) && is_edp(intel_dp) && |
||
6009 | port != PORT_B && port != PORT_C)) |
||
6010 | return false; |
||
6011 | |||
4104 | Serge | 6012 | DRM_DEBUG_KMS("Adding %s connector on port %c\n", |
6013 | type == DRM_MODE_CONNECTOR_eDP ? "eDP" : "DP", |
||
6014 | port_name(port)); |
||
6015 | |||
2330 | Serge | 6016 | drm_connector_init(dev, connector, &intel_dp_connector_funcs, type); |
6017 | drm_connector_helper_add(connector, &intel_dp_connector_helper_funcs); |
||
6018 | |||
6019 | connector->interlace_allowed = true; |
||
6020 | connector->doublescan_allowed = 0; |
||
6021 | |||
3243 | Serge | 6022 | INIT_DELAYED_WORK(&intel_dp->panel_vdd_work, |
5060 | serge | 6023 | edp_panel_vdd_work); |
2330 | Serge | 6024 | |
6025 | intel_connector_attach_encoder(intel_connector, intel_encoder); |
||
5060 | serge | 6026 | drm_connector_register(connector); |
2330 | Serge | 6027 | |
3480 | Serge | 6028 | if (HAS_DDI(dev)) |
3243 | Serge | 6029 | intel_connector->get_hw_state = intel_ddi_connector_get_hw_state; |
6030 | else |
||
6084 | serge | 6031 | intel_connector->get_hw_state = intel_connector_get_hw_state; |
5060 | serge | 6032 | intel_connector->unregister = intel_dp_connector_unregister; |
3031 | serge | 6033 | |
5060 | serge | 6034 | /* Set up the hotplug pin. */ |
3031 | serge | 6035 | switch (port) { |
6036 | case PORT_A: |
||
3746 | Serge | 6037 | intel_encoder->hpd_pin = HPD_PORT_A; |
6084 | serge | 6038 | break; |
3031 | serge | 6039 | case PORT_B: |
3746 | Serge | 6040 | intel_encoder->hpd_pin = HPD_PORT_B; |
6084 | serge | 6041 | if (IS_BROXTON(dev_priv) && (INTEL_REVID(dev) < BXT_REVID_B0)) |
6042 | intel_encoder->hpd_pin = HPD_PORT_A; |
||
6043 | break; |
||
3031 | serge | 6044 | case PORT_C: |
3746 | Serge | 6045 | intel_encoder->hpd_pin = HPD_PORT_C; |
6084 | serge | 6046 | break; |
3031 | serge | 6047 | case PORT_D: |
3746 | Serge | 6048 | intel_encoder->hpd_pin = HPD_PORT_D; |
6084 | serge | 6049 | break; |
6050 | case PORT_E: |
||
6051 | intel_encoder->hpd_pin = HPD_PORT_E; |
||
6052 | break; |
||
3031 | serge | 6053 | default: |
3746 | Serge | 6054 | BUG(); |
2330 | Serge | 6055 | } |
6056 | |||
5060 | serge | 6057 | if (is_edp(intel_dp)) { |
5354 | serge | 6058 | pps_lock(intel_dp); |
5060 | serge | 6059 | intel_dp_init_panel_power_timestamps(intel_dp); |
5354 | serge | 6060 | if (IS_VALLEYVIEW(dev)) |
6061 | vlv_initial_power_sequencer_setup(intel_dp); |
||
6062 | else |
||
6063 | intel_dp_init_panel_power_sequencer(dev, intel_dp); |
||
6064 | pps_unlock(intel_dp); |
||
5060 | serge | 6065 | } |
2330 | Serge | 6066 | |
5060 | serge | 6067 | intel_dp_aux_init(intel_dp, intel_connector); |
3031 | serge | 6068 | |
5060 | serge | 6069 | /* init MST on ports that can support it */ |
6084 | serge | 6070 | if (HAS_DP_MST(dev) && |
6071 | (port == PORT_B || port == PORT_C || port == PORT_D)) |
||
6072 | intel_dp_mst_encoder_init(intel_dig_port, |
||
6073 | intel_connector->base.base.id); |
||
5060 | serge | 6074 | |
5354 | serge | 6075 | if (!intel_edp_init_connector(intel_dp, intel_connector)) { |
5060 | serge | 6076 | drm_dp_aux_unregister(&intel_dp->aux); |
6084 | serge | 6077 | if (is_edp(intel_dp)) { |
4293 | Serge | 6078 | cancel_delayed_work_sync(&intel_dp->panel_vdd_work); |
5354 | serge | 6079 | /* |
6080 | * vdd might still be enabled do to the delayed vdd off. |
||
6081 | * Make sure vdd is actually turned off here. |
||
6082 | */ |
||
6083 | pps_lock(intel_dp); |
||
5060 | serge | 6084 | edp_panel_vdd_off_sync(intel_dp); |
5354 | serge | 6085 | pps_unlock(intel_dp); |
2330 | Serge | 6086 | } |
5060 | serge | 6087 | drm_connector_unregister(connector); |
4104 | Serge | 6088 | drm_connector_cleanup(connector); |
6089 | return false; |
||
2330 | Serge | 6090 | } |
6091 | |||
6092 | intel_dp_add_properties(intel_dp, connector); |
||
6093 | |||
6094 | /* For G4X desktop chip, PEG_BAND_GAP_DATA 3:0 must first be written |
||
6095 | * 0xd. Failure to do so will result in spurious interrupts being |
||
6096 | * generated on the port when a cable is not attached. |
||
6097 | */ |
||
6098 | if (IS_G4X(dev) && !IS_GM45(dev)) { |
||
6099 | u32 temp = I915_READ(PEG_BAND_GAP_DATA); |
||
6100 | I915_WRITE(PEG_BAND_GAP_DATA, (temp & ~0xf) | 0xd); |
||
6101 | } |
||
4104 | Serge | 6102 | |
6296 | serge | 6103 | i915_debugfs_connector_add(connector); |
6104 | |||
4104 | Serge | 6105 | return true; |
2330 | Serge | 6106 | } |
3243 | Serge | 6107 | |
6660 | serge | 6108 | bool intel_dp_init(struct drm_device *dev, |
6109 | int output_reg, |
||
6110 | enum port port) |
||
3243 | Serge | 6111 | { |
5060 | serge | 6112 | struct drm_i915_private *dev_priv = dev->dev_private; |
3243 | Serge | 6113 | struct intel_digital_port *intel_dig_port; |
6114 | struct intel_encoder *intel_encoder; |
||
6115 | struct drm_encoder *encoder; |
||
6116 | struct intel_connector *intel_connector; |
||
6117 | |||
4560 | Serge | 6118 | intel_dig_port = kzalloc(sizeof(*intel_dig_port), GFP_KERNEL); |
3243 | Serge | 6119 | if (!intel_dig_port) |
6660 | serge | 6120 | return false; |
3243 | Serge | 6121 | |
6084 | serge | 6122 | intel_connector = intel_connector_alloc(); |
6123 | if (!intel_connector) |
||
6124 | goto err_connector_alloc; |
||
3243 | Serge | 6125 | |
6126 | intel_encoder = &intel_dig_port->base; |
||
6127 | encoder = &intel_encoder->base; |
||
6128 | |||
6129 | drm_encoder_init(dev, &intel_encoder->base, &intel_dp_enc_funcs, |
||
6130 | DRM_MODE_ENCODER_TMDS); |
||
6131 | |||
3746 | Serge | 6132 | intel_encoder->compute_config = intel_dp_compute_config; |
3243 | Serge | 6133 | intel_encoder->disable = intel_disable_dp; |
6134 | intel_encoder->get_hw_state = intel_dp_get_hw_state; |
||
4104 | Serge | 6135 | intel_encoder->get_config = intel_dp_get_config; |
5060 | serge | 6136 | intel_encoder->suspend = intel_dp_encoder_suspend; |
6137 | if (IS_CHERRYVIEW(dev)) { |
||
6138 | intel_encoder->pre_pll_enable = chv_dp_pre_pll_enable; |
||
6139 | intel_encoder->pre_enable = chv_pre_enable_dp; |
||
6140 | intel_encoder->enable = vlv_enable_dp; |
||
6141 | intel_encoder->post_disable = chv_post_disable_dp; |
||
6084 | serge | 6142 | intel_encoder->post_pll_disable = chv_dp_post_pll_disable; |
5060 | serge | 6143 | } else if (IS_VALLEYVIEW(dev)) { |
4560 | Serge | 6144 | intel_encoder->pre_pll_enable = vlv_dp_pre_pll_enable; |
4104 | Serge | 6145 | intel_encoder->pre_enable = vlv_pre_enable_dp; |
6146 | intel_encoder->enable = vlv_enable_dp; |
||
5060 | serge | 6147 | intel_encoder->post_disable = vlv_post_disable_dp; |
4104 | Serge | 6148 | } else { |
4560 | Serge | 6149 | intel_encoder->pre_enable = g4x_pre_enable_dp; |
6150 | intel_encoder->enable = g4x_enable_dp; |
||
5354 | serge | 6151 | if (INTEL_INFO(dev)->gen >= 5) |
6152 | intel_encoder->post_disable = ilk_post_disable_dp; |
||
4104 | Serge | 6153 | } |
3243 | Serge | 6154 | |
6155 | intel_dig_port->port = port; |
||
6156 | intel_dig_port->dp.output_reg = output_reg; |
||
6157 | |||
6158 | intel_encoder->type = INTEL_OUTPUT_DISPLAYPORT; |
||
5060 | serge | 6159 | if (IS_CHERRYVIEW(dev)) { |
6160 | if (port == PORT_D) |
||
6161 | intel_encoder->crtc_mask = 1 << 2; |
||
6162 | else |
||
6163 | intel_encoder->crtc_mask = (1 << 0) | (1 << 1); |
||
6164 | } else { |
||
6084 | serge | 6165 | intel_encoder->crtc_mask = (1 << 0) | (1 << 1) | (1 << 2); |
5060 | serge | 6166 | } |
6167 | intel_encoder->cloneable = 0; |
||
3243 | Serge | 6168 | |
5060 | serge | 6169 | intel_dig_port->hpd_pulse = intel_dp_hpd_pulse; |
6084 | serge | 6170 | dev_priv->hotplug.irq_port[port] = intel_dig_port; |
5060 | serge | 6171 | |
6084 | serge | 6172 | if (!intel_dp_init_connector(intel_dig_port, intel_connector)) |
6173 | goto err_init_connector; |
||
6174 | |||
6660 | serge | 6175 | return true; |
6084 | serge | 6176 | |
6177 | err_init_connector: |
||
6178 | drm_encoder_cleanup(encoder); |
||
6179 | kfree(intel_connector); |
||
6180 | err_connector_alloc: |
||
6181 | kfree(intel_dig_port); |
||
6660 | serge | 6182 | return false; |
3243 | Serge | 6183 | } |
5060 | serge | 6184 | |
6185 | void intel_dp_mst_suspend(struct drm_device *dev) |
||
6186 | { |
||
6187 | struct drm_i915_private *dev_priv = dev->dev_private; |
||
6188 | int i; |
||
6189 | |||
6190 | /* disable MST */ |
||
6191 | for (i = 0; i < I915_MAX_PORTS; i++) { |
||
6084 | serge | 6192 | struct intel_digital_port *intel_dig_port = dev_priv->hotplug.irq_port[i]; |
5060 | serge | 6193 | if (!intel_dig_port) |
6194 | continue; |
||
6195 | |||
6196 | if (intel_dig_port->base.type == INTEL_OUTPUT_DISPLAYPORT) { |
||
6197 | if (!intel_dig_port->dp.can_mst) |
||
6198 | continue; |
||
6199 | if (intel_dig_port->dp.is_mst) |
||
6200 | drm_dp_mst_topology_mgr_suspend(&intel_dig_port->dp.mst_mgr); |
||
6201 | } |
||
6202 | } |
||
6203 | } |
||
6204 | |||
6205 | void intel_dp_mst_resume(struct drm_device *dev) |
||
6206 | { |
||
6207 | struct drm_i915_private *dev_priv = dev->dev_private; |
||
6208 | int i; |
||
6209 | |||
6210 | for (i = 0; i < I915_MAX_PORTS; i++) { |
||
6084 | serge | 6211 | struct intel_digital_port *intel_dig_port = dev_priv->hotplug.irq_port[i]; |
5060 | serge | 6212 | if (!intel_dig_port) |
6213 | continue; |
||
6214 | if (intel_dig_port->base.type == INTEL_OUTPUT_DISPLAYPORT) { |
||
6215 | int ret; |
||
6216 | |||
6217 | if (!intel_dig_port->dp.can_mst) |
||
6218 | continue; |
||
6219 | |||
6220 | ret = drm_dp_mst_topology_mgr_resume(&intel_dig_port->dp.mst_mgr); |
||
6221 | if (ret != 0) { |
||
6222 | intel_dp_check_mst_status(&intel_dig_port->dp); |
||
6223 | } |
||
6224 | } |
||
6225 | } |
||
6226 | }>>><>><>><>><>><>><>>=>>=>><>><>><>><>><>><>><>>>>>=>=>>>>>>>>>>>>>>>>>><>><>><>>><>>>><>> |