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5060 | serge | 1 | /* |
2 | * Copyright © 2008 Intel Corporation |
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3 | * 2014 Red Hat Inc. |
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4 | * |
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5 | * Permission is hereby granted, free of charge, to any person obtaining a |
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6 | * copy of this software and associated documentation files (the "Software"), |
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7 | * to deal in the Software without restriction, including without limitation |
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8 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
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9 | * and/or sell copies of the Software, and to permit persons to whom the |
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10 | * Software is furnished to do so, subject to the following conditions: |
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11 | * |
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12 | * The above copyright notice and this permission notice (including the next |
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13 | * paragraph) shall be included in all copies or substantial portions of the |
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14 | * Software. |
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15 | * |
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16 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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17 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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18 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
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19 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
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20 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING |
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21 | * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS |
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22 | * IN THE SOFTWARE. |
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23 | * |
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24 | */ |
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25 | |||
26 | #include |
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27 | #include "i915_drv.h" |
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28 | #include "intel_drv.h" |
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29 | #include |
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30 | #include |
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31 | |||
32 | static bool intel_dp_mst_compute_config(struct intel_encoder *encoder, |
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33 | struct intel_crtc_config *pipe_config) |
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34 | { |
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35 | struct intel_dp_mst_encoder *intel_mst = enc_to_mst(&encoder->base); |
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36 | struct intel_digital_port *intel_dig_port = intel_mst->primary; |
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37 | struct intel_dp *intel_dp = &intel_dig_port->dp; |
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38 | struct drm_device *dev = encoder->base.dev; |
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39 | int bpp; |
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40 | int lane_count, slots; |
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41 | struct drm_display_mode *adjusted_mode = &pipe_config->adjusted_mode; |
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42 | struct intel_connector *found = NULL, *intel_connector; |
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43 | int mst_pbn; |
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44 | |||
45 | pipe_config->dp_encoder_is_mst = true; |
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46 | pipe_config->has_pch_encoder = false; |
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47 | pipe_config->has_dp_encoder = true; |
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48 | bpp = 24; |
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49 | /* |
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50 | * for MST we always configure max link bw - the spec doesn't |
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51 | * seem to suggest we should do otherwise. |
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52 | */ |
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53 | lane_count = drm_dp_max_lane_count(intel_dp->dpcd); |
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54 | intel_dp->link_bw = intel_dp_max_link_bw(intel_dp); |
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55 | intel_dp->lane_count = lane_count; |
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56 | |||
57 | pipe_config->pipe_bpp = 24; |
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58 | pipe_config->port_clock = drm_dp_bw_code_to_link_rate(intel_dp->link_bw); |
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59 | |||
60 | list_for_each_entry(intel_connector, &dev->mode_config.connector_list, base.head) { |
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61 | if (intel_connector->new_encoder == encoder) { |
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62 | found = intel_connector; |
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63 | break; |
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64 | } |
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65 | } |
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66 | |||
67 | if (!found) { |
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68 | DRM_ERROR("can't find connector\n"); |
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69 | return false; |
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70 | } |
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71 | |||
72 | mst_pbn = drm_dp_calc_pbn_mode(adjusted_mode->clock, bpp); |
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73 | |||
74 | pipe_config->pbn = mst_pbn; |
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75 | slots = drm_dp_find_vcpi_slots(&intel_dp->mst_mgr, mst_pbn); |
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76 | |||
77 | intel_link_compute_m_n(bpp, lane_count, |
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78 | adjusted_mode->crtc_clock, |
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79 | pipe_config->port_clock, |
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80 | &pipe_config->dp_m_n); |
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81 | |||
82 | pipe_config->dp_m_n.tu = slots; |
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83 | return true; |
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84 | |||
85 | } |
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86 | |||
87 | static void intel_mst_disable_dp(struct intel_encoder *encoder) |
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88 | { |
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89 | struct intel_dp_mst_encoder *intel_mst = enc_to_mst(&encoder->base); |
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90 | struct intel_digital_port *intel_dig_port = intel_mst->primary; |
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91 | struct intel_dp *intel_dp = &intel_dig_port->dp; |
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92 | int ret; |
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93 | |||
94 | DRM_DEBUG_KMS("%d\n", intel_dp->active_mst_links); |
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95 | |||
96 | drm_dp_mst_reset_vcpi_slots(&intel_dp->mst_mgr, intel_mst->port); |
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97 | |||
98 | ret = drm_dp_update_payload_part1(&intel_dp->mst_mgr); |
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99 | if (ret) { |
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100 | DRM_ERROR("failed to update payload %d\n", ret); |
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101 | } |
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102 | } |
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103 | |||
104 | static void intel_mst_post_disable_dp(struct intel_encoder *encoder) |
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105 | { |
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106 | struct intel_dp_mst_encoder *intel_mst = enc_to_mst(&encoder->base); |
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107 | struct intel_digital_port *intel_dig_port = intel_mst->primary; |
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108 | struct intel_dp *intel_dp = &intel_dig_port->dp; |
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109 | |||
110 | DRM_DEBUG_KMS("%d\n", intel_dp->active_mst_links); |
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111 | |||
112 | /* this can fail */ |
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113 | drm_dp_check_act_status(&intel_dp->mst_mgr); |
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114 | /* and this can also fail */ |
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115 | drm_dp_update_payload_part2(&intel_dp->mst_mgr); |
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116 | |||
117 | drm_dp_mst_deallocate_vcpi(&intel_dp->mst_mgr, intel_mst->port); |
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118 | |||
119 | intel_dp->active_mst_links--; |
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120 | intel_mst->port = NULL; |
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121 | if (intel_dp->active_mst_links == 0) { |
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122 | intel_dig_port->base.post_disable(&intel_dig_port->base); |
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123 | intel_dp_sink_dpms(intel_dp, DRM_MODE_DPMS_OFF); |
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124 | } |
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125 | } |
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126 | |||
127 | static void intel_mst_pre_enable_dp(struct intel_encoder *encoder) |
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128 | { |
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129 | struct intel_dp_mst_encoder *intel_mst = enc_to_mst(&encoder->base); |
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130 | struct intel_digital_port *intel_dig_port = intel_mst->primary; |
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131 | struct intel_dp *intel_dp = &intel_dig_port->dp; |
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132 | struct drm_device *dev = encoder->base.dev; |
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133 | struct drm_i915_private *dev_priv = dev->dev_private; |
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134 | enum port port = intel_dig_port->port; |
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135 | int ret; |
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136 | uint32_t temp; |
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137 | struct intel_connector *found = NULL, *intel_connector; |
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138 | int slots; |
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139 | struct drm_crtc *crtc = encoder->base.crtc; |
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140 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); |
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141 | |||
142 | list_for_each_entry(intel_connector, &dev->mode_config.connector_list, base.head) { |
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143 | if (intel_connector->new_encoder == encoder) { |
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144 | found = intel_connector; |
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145 | break; |
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146 | } |
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147 | } |
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148 | |||
149 | if (!found) { |
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150 | DRM_ERROR("can't find connector\n"); |
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151 | return; |
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152 | } |
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153 | |||
154 | DRM_DEBUG_KMS("%d\n", intel_dp->active_mst_links); |
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155 | intel_mst->port = found->port; |
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156 | |||
157 | if (intel_dp->active_mst_links == 0) { |
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158 | enum port port = intel_ddi_get_encoder_port(encoder); |
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159 | |||
160 | I915_WRITE(PORT_CLK_SEL(port), intel_crtc->config.ddi_pll_sel); |
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161 | |||
162 | intel_ddi_init_dp_buf_reg(&intel_dig_port->base); |
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163 | |||
164 | intel_dp_sink_dpms(intel_dp, DRM_MODE_DPMS_ON); |
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165 | |||
166 | |||
167 | intel_dp_start_link_train(intel_dp); |
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168 | intel_dp_complete_link_train(intel_dp); |
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169 | intel_dp_stop_link_train(intel_dp); |
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170 | } |
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171 | |||
172 | ret = drm_dp_mst_allocate_vcpi(&intel_dp->mst_mgr, |
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173 | intel_mst->port, intel_crtc->config.pbn, &slots); |
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174 | if (ret == false) { |
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175 | DRM_ERROR("failed to allocate vcpi\n"); |
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176 | return; |
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177 | } |
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178 | |||
179 | |||
180 | intel_dp->active_mst_links++; |
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181 | temp = I915_READ(DP_TP_STATUS(port)); |
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182 | I915_WRITE(DP_TP_STATUS(port), temp); |
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183 | |||
184 | ret = drm_dp_update_payload_part1(&intel_dp->mst_mgr); |
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185 | } |
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186 | |||
187 | static void intel_mst_enable_dp(struct intel_encoder *encoder) |
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188 | { |
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189 | struct intel_dp_mst_encoder *intel_mst = enc_to_mst(&encoder->base); |
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190 | struct intel_digital_port *intel_dig_port = intel_mst->primary; |
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191 | struct intel_dp *intel_dp = &intel_dig_port->dp; |
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192 | struct drm_device *dev = intel_dig_port->base.base.dev; |
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193 | struct drm_i915_private *dev_priv = dev->dev_private; |
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194 | enum port port = intel_dig_port->port; |
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195 | int ret; |
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196 | |||
197 | DRM_DEBUG_KMS("%d\n", intel_dp->active_mst_links); |
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198 | |||
199 | if (wait_for((I915_READ(DP_TP_STATUS(port)) & DP_TP_STATUS_ACT_SENT), |
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200 | 1)) |
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201 | DRM_ERROR("Timed out waiting for ACT sent\n"); |
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202 | |||
203 | ret = drm_dp_check_act_status(&intel_dp->mst_mgr); |
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204 | |||
205 | ret = drm_dp_update_payload_part2(&intel_dp->mst_mgr); |
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206 | } |
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207 | |||
208 | static bool intel_dp_mst_enc_get_hw_state(struct intel_encoder *encoder, |
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209 | enum pipe *pipe) |
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210 | { |
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211 | struct intel_dp_mst_encoder *intel_mst = enc_to_mst(&encoder->base); |
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212 | *pipe = intel_mst->pipe; |
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213 | if (intel_mst->port) |
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214 | return true; |
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215 | return false; |
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216 | } |
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217 | |||
218 | static void intel_dp_mst_enc_get_config(struct intel_encoder *encoder, |
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219 | struct intel_crtc_config *pipe_config) |
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220 | { |
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221 | struct intel_dp_mst_encoder *intel_mst = enc_to_mst(&encoder->base); |
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222 | struct intel_digital_port *intel_dig_port = intel_mst->primary; |
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223 | struct intel_crtc *crtc = to_intel_crtc(encoder->base.crtc); |
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224 | struct drm_device *dev = encoder->base.dev; |
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225 | struct drm_i915_private *dev_priv = dev->dev_private; |
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226 | enum transcoder cpu_transcoder = crtc->config.cpu_transcoder; |
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227 | u32 temp, flags = 0; |
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228 | |||
229 | pipe_config->has_dp_encoder = true; |
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230 | |||
231 | temp = I915_READ(TRANS_DDI_FUNC_CTL(cpu_transcoder)); |
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232 | if (temp & TRANS_DDI_PHSYNC) |
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233 | flags |= DRM_MODE_FLAG_PHSYNC; |
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234 | else |
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235 | flags |= DRM_MODE_FLAG_NHSYNC; |
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236 | if (temp & TRANS_DDI_PVSYNC) |
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237 | flags |= DRM_MODE_FLAG_PVSYNC; |
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238 | else |
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239 | flags |= DRM_MODE_FLAG_NVSYNC; |
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240 | |||
241 | switch (temp & TRANS_DDI_BPC_MASK) { |
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242 | case TRANS_DDI_BPC_6: |
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243 | pipe_config->pipe_bpp = 18; |
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244 | break; |
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245 | case TRANS_DDI_BPC_8: |
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246 | pipe_config->pipe_bpp = 24; |
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247 | break; |
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248 | case TRANS_DDI_BPC_10: |
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249 | pipe_config->pipe_bpp = 30; |
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250 | break; |
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251 | case TRANS_DDI_BPC_12: |
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252 | pipe_config->pipe_bpp = 36; |
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253 | break; |
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254 | default: |
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255 | break; |
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256 | } |
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257 | pipe_config->adjusted_mode.flags |= flags; |
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258 | intel_dp_get_m_n(crtc, pipe_config); |
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259 | |||
260 | intel_ddi_clock_get(&intel_dig_port->base, pipe_config); |
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261 | } |
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262 | |||
263 | static int intel_dp_mst_get_ddc_modes(struct drm_connector *connector) |
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264 | { |
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265 | struct intel_connector *intel_connector = to_intel_connector(connector); |
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266 | struct intel_dp *intel_dp = intel_connector->mst_port; |
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267 | struct edid *edid; |
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268 | int ret; |
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269 | |||
270 | edid = drm_dp_mst_get_edid(connector, &intel_dp->mst_mgr, intel_connector->port); |
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271 | if (!edid) |
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272 | return 0; |
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273 | |||
274 | ret = intel_connector_update_modes(connector, edid); |
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275 | kfree(edid); |
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276 | |||
277 | return ret; |
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278 | } |
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279 | |||
280 | static enum drm_connector_status |
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5354 | serge | 281 | intel_dp_mst_detect(struct drm_connector *connector, bool force) |
5060 | serge | 282 | { |
283 | struct intel_connector *intel_connector = to_intel_connector(connector); |
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284 | struct intel_dp *intel_dp = intel_connector->mst_port; |
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285 | |||
5354 | serge | 286 | return drm_dp_mst_detect_port(connector, &intel_dp->mst_mgr, intel_connector->port); |
5060 | serge | 287 | } |
288 | |||
289 | static int |
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290 | intel_dp_mst_set_property(struct drm_connector *connector, |
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291 | struct drm_property *property, |
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292 | uint64_t val) |
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293 | { |
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294 | return 0; |
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295 | } |
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296 | |||
297 | static void |
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298 | intel_dp_mst_connector_destroy(struct drm_connector *connector) |
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299 | { |
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300 | struct intel_connector *intel_connector = to_intel_connector(connector); |
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301 | |||
302 | if (!IS_ERR_OR_NULL(intel_connector->edid)) |
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303 | kfree(intel_connector->edid); |
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304 | |||
305 | drm_connector_cleanup(connector); |
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306 | kfree(connector); |
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307 | } |
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308 | |||
309 | static const struct drm_connector_funcs intel_dp_mst_connector_funcs = { |
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310 | .dpms = intel_connector_dpms, |
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311 | .detect = intel_dp_mst_detect, |
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312 | .fill_modes = drm_helper_probe_single_connector_modes, |
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313 | .set_property = intel_dp_mst_set_property, |
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314 | .destroy = intel_dp_mst_connector_destroy, |
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315 | }; |
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316 | |||
317 | static int intel_dp_mst_get_modes(struct drm_connector *connector) |
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318 | { |
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319 | return intel_dp_mst_get_ddc_modes(connector); |
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320 | } |
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321 | |||
322 | static enum drm_mode_status |
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323 | intel_dp_mst_mode_valid(struct drm_connector *connector, |
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324 | struct drm_display_mode *mode) |
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325 | { |
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326 | /* TODO - validate mode against available PBN for link */ |
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327 | if (mode->clock < 10000) |
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328 | return MODE_CLOCK_LOW; |
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329 | |||
330 | if (mode->flags & DRM_MODE_FLAG_DBLCLK) |
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331 | return MODE_H_ILLEGAL; |
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332 | |||
333 | return MODE_OK; |
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334 | } |
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335 | |||
336 | static struct drm_encoder *intel_mst_best_encoder(struct drm_connector *connector) |
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337 | { |
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338 | struct intel_connector *intel_connector = to_intel_connector(connector); |
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339 | struct intel_dp *intel_dp = intel_connector->mst_port; |
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340 | return &intel_dp->mst_encoders[0]->base.base; |
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341 | } |
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342 | |||
343 | static const struct drm_connector_helper_funcs intel_dp_mst_connector_helper_funcs = { |
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344 | .get_modes = intel_dp_mst_get_modes, |
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345 | .mode_valid = intel_dp_mst_mode_valid, |
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346 | .best_encoder = intel_mst_best_encoder, |
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347 | }; |
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348 | |||
349 | static void intel_dp_mst_encoder_destroy(struct drm_encoder *encoder) |
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350 | { |
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351 | struct intel_dp_mst_encoder *intel_mst = enc_to_mst(encoder); |
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352 | |||
353 | drm_encoder_cleanup(encoder); |
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354 | kfree(intel_mst); |
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355 | } |
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356 | |||
357 | static const struct drm_encoder_funcs intel_dp_mst_enc_funcs = { |
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358 | .destroy = intel_dp_mst_encoder_destroy, |
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359 | }; |
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360 | |||
361 | static bool intel_dp_mst_get_hw_state(struct intel_connector *connector) |
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362 | { |
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363 | if (connector->encoder) { |
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364 | enum pipe pipe; |
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365 | if (!connector->encoder->get_hw_state(connector->encoder, &pipe)) |
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366 | return false; |
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367 | return true; |
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368 | } |
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369 | return false; |
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370 | } |
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371 | |||
372 | static void intel_connector_add_to_fbdev(struct intel_connector *connector) |
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373 | { |
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374 | #ifdef CONFIG_DRM_I915_FBDEV |
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375 | struct drm_i915_private *dev_priv = to_i915(connector->base.dev); |
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376 | drm_fb_helper_add_one_connector(&dev_priv->fbdev->helper, &connector->base); |
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377 | #endif |
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378 | } |
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379 | |||
380 | static void intel_connector_remove_from_fbdev(struct intel_connector *connector) |
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381 | { |
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382 | #ifdef CONFIG_DRM_I915_FBDEV |
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383 | struct drm_i915_private *dev_priv = to_i915(connector->base.dev); |
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384 | drm_fb_helper_remove_one_connector(&dev_priv->fbdev->helper, &connector->base); |
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385 | #endif |
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386 | } |
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387 | |||
5354 | serge | 388 | static struct drm_connector *intel_dp_add_mst_connector(struct drm_dp_mst_topology_mgr *mgr, struct drm_dp_mst_port *port, const char *pathprop) |
5060 | serge | 389 | { |
390 | struct intel_dp *intel_dp = container_of(mgr, struct intel_dp, mst_mgr); |
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391 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
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392 | struct drm_device *dev = intel_dig_port->base.base.dev; |
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393 | struct intel_connector *intel_connector; |
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394 | struct drm_connector *connector; |
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395 | int i; |
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396 | |||
397 | intel_connector = kzalloc(sizeof(*intel_connector), GFP_KERNEL); |
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398 | if (!intel_connector) |
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399 | return NULL; |
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400 | |||
401 | connector = &intel_connector->base; |
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402 | drm_connector_init(dev, connector, &intel_dp_mst_connector_funcs, DRM_MODE_CONNECTOR_DisplayPort); |
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403 | drm_connector_helper_add(connector, &intel_dp_mst_connector_helper_funcs); |
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404 | |||
405 | intel_connector->unregister = intel_connector_unregister; |
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406 | intel_connector->get_hw_state = intel_dp_mst_get_hw_state; |
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407 | intel_connector->mst_port = intel_dp; |
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408 | intel_connector->port = port; |
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409 | |||
410 | for (i = PIPE_A; i <= PIPE_C; i++) { |
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411 | drm_mode_connector_attach_encoder(&intel_connector->base, |
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412 | &intel_dp->mst_encoders[i]->base.base); |
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413 | } |
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414 | intel_dp_add_properties(intel_dp, connector); |
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415 | |||
416 | drm_object_attach_property(&connector->base, dev->mode_config.path_property, 0); |
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5354 | serge | 417 | drm_object_attach_property(&connector->base, dev->mode_config.tile_property, 0); |
418 | |||
5060 | serge | 419 | drm_mode_connector_set_path_property(connector, pathprop); |
420 | drm_reinit_primary_mode_group(dev); |
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421 | mutex_lock(&dev->mode_config.mutex); |
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422 | intel_connector_add_to_fbdev(intel_connector); |
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423 | mutex_unlock(&dev->mode_config.mutex); |
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424 | drm_connector_register(&intel_connector->base); |
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425 | return connector; |
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426 | } |
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427 | |||
428 | static void intel_dp_destroy_mst_connector(struct drm_dp_mst_topology_mgr *mgr, |
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429 | struct drm_connector *connector) |
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430 | { |
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431 | struct intel_connector *intel_connector = to_intel_connector(connector); |
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432 | struct drm_device *dev = connector->dev; |
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433 | /* need to nuke the connector */ |
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434 | mutex_lock(&dev->mode_config.mutex); |
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435 | intel_connector_dpms(connector, DRM_MODE_DPMS_OFF); |
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436 | mutex_unlock(&dev->mode_config.mutex); |
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437 | |||
438 | intel_connector->unregister(intel_connector); |
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439 | |||
440 | mutex_lock(&dev->mode_config.mutex); |
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441 | intel_connector_remove_from_fbdev(intel_connector); |
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442 | drm_connector_cleanup(connector); |
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443 | mutex_unlock(&dev->mode_config.mutex); |
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444 | |||
445 | drm_reinit_primary_mode_group(dev); |
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446 | |||
447 | kfree(intel_connector); |
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448 | DRM_DEBUG_KMS("\n"); |
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449 | } |
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450 | |||
451 | static void intel_dp_mst_hotplug(struct drm_dp_mst_topology_mgr *mgr) |
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452 | { |
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453 | struct intel_dp *intel_dp = container_of(mgr, struct intel_dp, mst_mgr); |
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454 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
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455 | struct drm_device *dev = intel_dig_port->base.base.dev; |
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456 | |||
457 | drm_kms_helper_hotplug_event(dev); |
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458 | } |
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459 | |||
460 | static struct drm_dp_mst_topology_cbs mst_cbs = { |
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461 | .add_connector = intel_dp_add_mst_connector, |
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462 | .destroy_connector = intel_dp_destroy_mst_connector, |
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463 | .hotplug = intel_dp_mst_hotplug, |
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464 | }; |
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465 | |||
466 | static struct intel_dp_mst_encoder * |
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467 | intel_dp_create_fake_mst_encoder(struct intel_digital_port *intel_dig_port, enum pipe pipe) |
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468 | { |
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469 | struct intel_dp_mst_encoder *intel_mst; |
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470 | struct intel_encoder *intel_encoder; |
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471 | struct drm_device *dev = intel_dig_port->base.base.dev; |
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472 | |||
473 | intel_mst = kzalloc(sizeof(*intel_mst), GFP_KERNEL); |
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474 | |||
475 | if (!intel_mst) |
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476 | return NULL; |
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477 | |||
478 | intel_mst->pipe = pipe; |
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479 | intel_encoder = &intel_mst->base; |
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480 | intel_mst->primary = intel_dig_port; |
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481 | |||
482 | drm_encoder_init(dev, &intel_encoder->base, &intel_dp_mst_enc_funcs, |
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483 | DRM_MODE_ENCODER_DPMST); |
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484 | |||
485 | intel_encoder->type = INTEL_OUTPUT_DP_MST; |
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486 | intel_encoder->crtc_mask = 0x7; |
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487 | intel_encoder->cloneable = 0; |
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488 | |||
489 | intel_encoder->compute_config = intel_dp_mst_compute_config; |
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490 | intel_encoder->disable = intel_mst_disable_dp; |
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491 | intel_encoder->post_disable = intel_mst_post_disable_dp; |
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492 | intel_encoder->pre_enable = intel_mst_pre_enable_dp; |
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493 | intel_encoder->enable = intel_mst_enable_dp; |
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494 | intel_encoder->get_hw_state = intel_dp_mst_enc_get_hw_state; |
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495 | intel_encoder->get_config = intel_dp_mst_enc_get_config; |
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496 | |||
497 | return intel_mst; |
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498 | |||
499 | } |
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500 | |||
501 | static bool |
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502 | intel_dp_create_fake_mst_encoders(struct intel_digital_port *intel_dig_port) |
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503 | { |
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504 | int i; |
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505 | struct intel_dp *intel_dp = &intel_dig_port->dp; |
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506 | |||
507 | for (i = PIPE_A; i <= PIPE_C; i++) |
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508 | intel_dp->mst_encoders[i] = intel_dp_create_fake_mst_encoder(intel_dig_port, i); |
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509 | return true; |
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510 | } |
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511 | |||
512 | int |
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513 | intel_dp_mst_encoder_init(struct intel_digital_port *intel_dig_port, int conn_base_id) |
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514 | { |
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515 | struct intel_dp *intel_dp = &intel_dig_port->dp; |
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516 | struct drm_device *dev = intel_dig_port->base.base.dev; |
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517 | int ret; |
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518 | |||
519 | intel_dp->can_mst = true; |
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520 | intel_dp->mst_mgr.cbs = &mst_cbs; |
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521 | |||
522 | /* create encoders */ |
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523 | intel_dp_create_fake_mst_encoders(intel_dig_port); |
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524 | ret = drm_dp_mst_topology_mgr_init(&intel_dp->mst_mgr, dev->dev, &intel_dp->aux, 16, 3, conn_base_id); |
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525 | if (ret) { |
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526 | intel_dp->can_mst = false; |
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527 | return ret; |
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528 | } |
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529 | return 0; |
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530 | } |
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531 | |||
532 | void |
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533 | intel_dp_mst_encoder_cleanup(struct intel_digital_port *intel_dig_port) |
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534 | { |
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535 | struct intel_dp *intel_dp = &intel_dig_port->dp; |
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536 | |||
537 | if (!intel_dp->can_mst) |
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538 | return; |
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539 | |||
540 | drm_dp_mst_topology_mgr_destroy(&intel_dp->mst_mgr); |
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541 | /* encoders will get killed by normal cleanup */ |
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542 | }=>=>> |