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Rev | Author | Line No. | Line |
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2351 | Serge | 1 | /* |
2 | * Copyright © 2006 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 FROM, |
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20 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
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21 | * SOFTWARE. |
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22 | * |
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23 | * Authors: |
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24 | * Eric Anholt |
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25 | * |
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26 | */ |
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6937 | serge | 27 | |
5097 | serge | 28 | #include |
5060 | serge | 29 | #include |
3031 | serge | 30 | #include |
2351 | Serge | 31 | #include "i915_drv.h" |
32 | #include "intel_bios.h" |
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33 | |||
34 | #define SLAVE_ADDR1 0x70 |
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35 | #define SLAVE_ADDR2 0x72 |
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36 | |||
37 | static int panel_type; |
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38 | |||
6084 | serge | 39 | static const void * |
40 | find_section(const void *_bdb, int section_id) |
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2351 | Serge | 41 | { |
6084 | serge | 42 | const struct bdb_header *bdb = _bdb; |
43 | const u8 *base = _bdb; |
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2351 | Serge | 44 | int index = 0; |
6084 | serge | 45 | u32 total, current_size; |
2351 | Serge | 46 | u8 current_id; |
47 | |||
48 | /* skip to first section */ |
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49 | index += bdb->header_size; |
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50 | total = bdb->bdb_size; |
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51 | |||
52 | /* walk the sections looking for section_id */ |
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5060 | serge | 53 | while (index + 3 < total) { |
2351 | Serge | 54 | current_id = *(base + index); |
55 | index++; |
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5060 | serge | 56 | |
6084 | serge | 57 | current_size = *((const u16 *)(base + index)); |
2351 | Serge | 58 | index += 2; |
5060 | serge | 59 | |
6084 | serge | 60 | /* The MIPI Sequence Block v3+ has a separate size field. */ |
61 | if (current_id == BDB_MIPI_SEQUENCE && *(base + index) >= 3) |
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62 | current_size = *((const u32 *)(base + index + 1)); |
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63 | |||
5060 | serge | 64 | if (index + current_size > total) |
65 | return NULL; |
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66 | |||
2351 | Serge | 67 | if (current_id == section_id) |
68 | return base + index; |
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5060 | serge | 69 | |
2351 | Serge | 70 | index += current_size; |
71 | } |
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72 | |||
73 | return NULL; |
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74 | } |
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75 | |||
76 | static u16 |
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6084 | serge | 77 | get_blocksize(const void *p) |
2351 | Serge | 78 | { |
79 | u16 *block_ptr, block_size; |
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80 | |||
81 | block_ptr = (u16 *)((char *)p - 2); |
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82 | block_size = *block_ptr; |
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83 | return block_size; |
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84 | } |
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85 | |||
86 | static void |
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87 | fill_detail_timing_data(struct drm_display_mode *panel_fixed_mode, |
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88 | const struct lvds_dvo_timing *dvo_timing) |
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89 | { |
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90 | panel_fixed_mode->hdisplay = (dvo_timing->hactive_hi << 8) | |
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91 | dvo_timing->hactive_lo; |
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92 | panel_fixed_mode->hsync_start = panel_fixed_mode->hdisplay + |
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93 | ((dvo_timing->hsync_off_hi << 8) | dvo_timing->hsync_off_lo); |
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94 | panel_fixed_mode->hsync_end = panel_fixed_mode->hsync_start + |
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95 | dvo_timing->hsync_pulse_width; |
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96 | panel_fixed_mode->htotal = panel_fixed_mode->hdisplay + |
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97 | ((dvo_timing->hblank_hi << 8) | dvo_timing->hblank_lo); |
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98 | |||
99 | panel_fixed_mode->vdisplay = (dvo_timing->vactive_hi << 8) | |
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100 | dvo_timing->vactive_lo; |
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101 | panel_fixed_mode->vsync_start = panel_fixed_mode->vdisplay + |
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102 | dvo_timing->vsync_off; |
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103 | panel_fixed_mode->vsync_end = panel_fixed_mode->vsync_start + |
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104 | dvo_timing->vsync_pulse_width; |
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105 | panel_fixed_mode->vtotal = panel_fixed_mode->vdisplay + |
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106 | ((dvo_timing->vblank_hi << 8) | dvo_timing->vblank_lo); |
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107 | panel_fixed_mode->clock = dvo_timing->clock * 10; |
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108 | panel_fixed_mode->type = DRM_MODE_TYPE_PREFERRED; |
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109 | |||
110 | if (dvo_timing->hsync_positive) |
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111 | panel_fixed_mode->flags |= DRM_MODE_FLAG_PHSYNC; |
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112 | else |
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113 | panel_fixed_mode->flags |= DRM_MODE_FLAG_NHSYNC; |
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114 | |||
115 | if (dvo_timing->vsync_positive) |
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116 | panel_fixed_mode->flags |= DRM_MODE_FLAG_PVSYNC; |
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117 | else |
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118 | panel_fixed_mode->flags |= DRM_MODE_FLAG_NVSYNC; |
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119 | |||
120 | /* Some VBTs have bogus h/vtotal values */ |
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121 | if (panel_fixed_mode->hsync_end > panel_fixed_mode->htotal) |
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122 | panel_fixed_mode->htotal = panel_fixed_mode->hsync_end + 1; |
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123 | if (panel_fixed_mode->vsync_end > panel_fixed_mode->vtotal) |
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124 | panel_fixed_mode->vtotal = panel_fixed_mode->vsync_end + 1; |
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125 | |||
126 | drm_mode_set_name(panel_fixed_mode); |
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127 | } |
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128 | |||
129 | static const struct lvds_dvo_timing * |
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130 | get_lvds_dvo_timing(const struct bdb_lvds_lfp_data *lvds_lfp_data, |
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131 | const struct bdb_lvds_lfp_data_ptrs *lvds_lfp_data_ptrs, |
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132 | int index) |
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133 | { |
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134 | /* |
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135 | * the size of fp_timing varies on the different platform. |
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136 | * So calculate the DVO timing relative offset in LVDS data |
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137 | * entry to get the DVO timing entry |
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138 | */ |
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139 | |||
140 | int lfp_data_size = |
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141 | lvds_lfp_data_ptrs->ptr[1].dvo_timing_offset - |
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142 | lvds_lfp_data_ptrs->ptr[0].dvo_timing_offset; |
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143 | int dvo_timing_offset = |
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144 | lvds_lfp_data_ptrs->ptr[0].dvo_timing_offset - |
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145 | lvds_lfp_data_ptrs->ptr[0].fp_timing_offset; |
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146 | char *entry = (char *)lvds_lfp_data->data + lfp_data_size * index; |
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147 | |||
148 | return (struct lvds_dvo_timing *)(entry + dvo_timing_offset); |
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149 | } |
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150 | |||
3031 | serge | 151 | /* get lvds_fp_timing entry |
152 | * this function may return NULL if the corresponding entry is invalid |
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153 | */ |
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154 | static const struct lvds_fp_timing * |
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155 | get_lvds_fp_timing(const struct bdb_header *bdb, |
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156 | const struct bdb_lvds_lfp_data *data, |
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157 | const struct bdb_lvds_lfp_data_ptrs *ptrs, |
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158 | int index) |
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159 | { |
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160 | size_t data_ofs = (const u8 *)data - (const u8 *)bdb; |
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161 | u16 data_size = ((const u16 *)data)[-1]; /* stored in header */ |
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162 | size_t ofs; |
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163 | |||
164 | if (index >= ARRAY_SIZE(ptrs->ptr)) |
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165 | return NULL; |
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166 | ofs = ptrs->ptr[index].fp_timing_offset; |
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167 | if (ofs < data_ofs || |
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168 | ofs + sizeof(struct lvds_fp_timing) > data_ofs + data_size) |
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169 | return NULL; |
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170 | return (const struct lvds_fp_timing *)((const u8 *)bdb + ofs); |
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171 | } |
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172 | |||
2351 | Serge | 173 | /* Try to find integrated panel data */ |
174 | static void |
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175 | parse_lfp_panel_data(struct drm_i915_private *dev_priv, |
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6084 | serge | 176 | const struct bdb_header *bdb) |
2351 | Serge | 177 | { |
178 | const struct bdb_lvds_options *lvds_options; |
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179 | const struct bdb_lvds_lfp_data *lvds_lfp_data; |
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180 | const struct bdb_lvds_lfp_data_ptrs *lvds_lfp_data_ptrs; |
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181 | const struct lvds_dvo_timing *panel_dvo_timing; |
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3031 | serge | 182 | const struct lvds_fp_timing *fp_timing; |
2351 | Serge | 183 | struct drm_display_mode *panel_fixed_mode; |
6084 | serge | 184 | int drrs_mode; |
2351 | Serge | 185 | |
186 | lvds_options = find_section(bdb, BDB_LVDS_OPTIONS); |
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187 | if (!lvds_options) |
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188 | return; |
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189 | |||
4104 | Serge | 190 | dev_priv->vbt.lvds_dither = lvds_options->pixel_dither; |
2351 | Serge | 191 | if (lvds_options->panel_type == 0xff) |
192 | return; |
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193 | |||
194 | panel_type = lvds_options->panel_type; |
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195 | |||
5060 | serge | 196 | drrs_mode = (lvds_options->dps_panel_type_bits |
197 | >> (panel_type * 2)) & MODE_MASK; |
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198 | /* |
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199 | * VBT has static DRRS = 0 and seamless DRRS = 2. |
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200 | * The below piece of code is required to adjust vbt.drrs_type |
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201 | * to match the enum drrs_support_type. |
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202 | */ |
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203 | switch (drrs_mode) { |
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204 | case 0: |
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205 | dev_priv->vbt.drrs_type = STATIC_DRRS_SUPPORT; |
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206 | DRM_DEBUG_KMS("DRRS supported mode is static\n"); |
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207 | break; |
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208 | case 2: |
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209 | dev_priv->vbt.drrs_type = SEAMLESS_DRRS_SUPPORT; |
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210 | DRM_DEBUG_KMS("DRRS supported mode is seamless\n"); |
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211 | break; |
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212 | default: |
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213 | dev_priv->vbt.drrs_type = DRRS_NOT_SUPPORTED; |
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214 | DRM_DEBUG_KMS("DRRS not supported (VBT input)\n"); |
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215 | break; |
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216 | } |
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217 | |||
2351 | Serge | 218 | lvds_lfp_data = find_section(bdb, BDB_LVDS_LFP_DATA); |
219 | if (!lvds_lfp_data) |
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220 | return; |
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221 | |||
222 | lvds_lfp_data_ptrs = find_section(bdb, BDB_LVDS_LFP_DATA_PTRS); |
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223 | if (!lvds_lfp_data_ptrs) |
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224 | return; |
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225 | |||
4104 | Serge | 226 | dev_priv->vbt.lvds_vbt = 1; |
2351 | Serge | 227 | |
228 | panel_dvo_timing = get_lvds_dvo_timing(lvds_lfp_data, |
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229 | lvds_lfp_data_ptrs, |
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230 | lvds_options->panel_type); |
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231 | |||
232 | panel_fixed_mode = kzalloc(sizeof(*panel_fixed_mode), GFP_KERNEL); |
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233 | if (!panel_fixed_mode) |
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234 | return; |
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235 | |||
236 | fill_detail_timing_data(panel_fixed_mode, panel_dvo_timing); |
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237 | |||
4104 | Serge | 238 | dev_priv->vbt.lfp_lvds_vbt_mode = panel_fixed_mode; |
2351 | Serge | 239 | |
240 | DRM_DEBUG_KMS("Found panel mode in BIOS VBT tables:\n"); |
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241 | drm_mode_debug_printmodeline(panel_fixed_mode); |
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242 | |||
3031 | serge | 243 | fp_timing = get_lvds_fp_timing(bdb, lvds_lfp_data, |
244 | lvds_lfp_data_ptrs, |
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245 | lvds_options->panel_type); |
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246 | if (fp_timing) { |
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247 | /* check the resolution, just to be sure */ |
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248 | if (fp_timing->x_res == panel_fixed_mode->hdisplay && |
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249 | fp_timing->y_res == panel_fixed_mode->vdisplay) { |
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4104 | Serge | 250 | dev_priv->vbt.bios_lvds_val = fp_timing->lvds_reg_val; |
3031 | serge | 251 | DRM_DEBUG_KMS("VBT initial LVDS value %x\n", |
4104 | Serge | 252 | dev_priv->vbt.bios_lvds_val); |
3031 | serge | 253 | } |
254 | } |
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2351 | Serge | 255 | } |
256 | |||
4560 | Serge | 257 | static void |
6084 | serge | 258 | parse_lfp_backlight(struct drm_i915_private *dev_priv, |
259 | const struct bdb_header *bdb) |
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4560 | Serge | 260 | { |
261 | const struct bdb_lfp_backlight_data *backlight_data; |
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262 | const struct bdb_lfp_backlight_data_entry *entry; |
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263 | |||
264 | backlight_data = find_section(bdb, BDB_LVDS_BACKLIGHT); |
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265 | if (!backlight_data) |
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266 | return; |
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267 | |||
268 | if (backlight_data->entry_size != sizeof(backlight_data->data[0])) { |
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269 | DRM_DEBUG_KMS("Unsupported backlight data entry size %u\n", |
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270 | backlight_data->entry_size); |
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271 | return; |
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272 | } |
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273 | |||
274 | entry = &backlight_data->data[panel_type]; |
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275 | |||
5060 | serge | 276 | dev_priv->vbt.backlight.present = entry->type == BDB_BACKLIGHT_TYPE_PWM; |
277 | if (!dev_priv->vbt.backlight.present) { |
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278 | DRM_DEBUG_KMS("PWM backlight not present in VBT (type %u)\n", |
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279 | entry->type); |
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280 | return; |
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281 | } |
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282 | |||
4560 | Serge | 283 | dev_priv->vbt.backlight.pwm_freq_hz = entry->pwm_freq_hz; |
284 | dev_priv->vbt.backlight.active_low_pwm = entry->active_low_pwm; |
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5060 | serge | 285 | dev_priv->vbt.backlight.min_brightness = entry->min_brightness; |
4560 | Serge | 286 | DRM_DEBUG_KMS("VBT backlight PWM modulation frequency %u Hz, " |
287 | "active %s, min brightness %u, level %u\n", |
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288 | dev_priv->vbt.backlight.pwm_freq_hz, |
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289 | dev_priv->vbt.backlight.active_low_pwm ? "low" : "high", |
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5060 | serge | 290 | dev_priv->vbt.backlight.min_brightness, |
4560 | Serge | 291 | backlight_data->level[panel_type]); |
292 | } |
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293 | |||
2351 | Serge | 294 | /* Try to find sdvo panel data */ |
295 | static void |
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296 | parse_sdvo_panel_data(struct drm_i915_private *dev_priv, |
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6084 | serge | 297 | const struct bdb_header *bdb) |
2351 | Serge | 298 | { |
6084 | serge | 299 | const struct lvds_dvo_timing *dvo_timing; |
2351 | Serge | 300 | struct drm_display_mode *panel_fixed_mode; |
301 | int index; |
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302 | |||
5060 | serge | 303 | index = i915.vbt_sdvo_panel_type; |
3031 | serge | 304 | if (index == -2) { |
305 | DRM_DEBUG_KMS("Ignore SDVO panel mode from BIOS VBT tables.\n"); |
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306 | return; |
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307 | } |
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308 | |||
2351 | Serge | 309 | if (index == -1) { |
6084 | serge | 310 | const struct bdb_sdvo_lvds_options *sdvo_lvds_options; |
2351 | Serge | 311 | |
312 | sdvo_lvds_options = find_section(bdb, BDB_SDVO_LVDS_OPTIONS); |
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313 | if (!sdvo_lvds_options) |
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314 | return; |
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315 | |||
316 | index = sdvo_lvds_options->panel_type; |
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317 | } |
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318 | |||
319 | dvo_timing = find_section(bdb, BDB_SDVO_PANEL_DTDS); |
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320 | if (!dvo_timing) |
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321 | return; |
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322 | |||
323 | panel_fixed_mode = kzalloc(sizeof(*panel_fixed_mode), GFP_KERNEL); |
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324 | if (!panel_fixed_mode) |
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325 | return; |
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326 | |||
327 | fill_detail_timing_data(panel_fixed_mode, dvo_timing + index); |
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328 | |||
4104 | Serge | 329 | dev_priv->vbt.sdvo_lvds_vbt_mode = panel_fixed_mode; |
2351 | Serge | 330 | |
331 | DRM_DEBUG_KMS("Found SDVO panel mode in BIOS VBT tables:\n"); |
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332 | drm_mode_debug_printmodeline(panel_fixed_mode); |
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333 | } |
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334 | |||
6937 | serge | 335 | static int intel_bios_ssc_frequency(struct drm_i915_private *dev_priv, |
2351 | Serge | 336 | bool alternate) |
337 | { |
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6937 | serge | 338 | switch (INTEL_INFO(dev_priv)->gen) { |
2351 | Serge | 339 | case 2: |
4560 | Serge | 340 | return alternate ? 66667 : 48000; |
2351 | Serge | 341 | case 3: |
342 | case 4: |
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4560 | Serge | 343 | return alternate ? 100000 : 96000; |
2351 | Serge | 344 | default: |
4560 | Serge | 345 | return alternate ? 100000 : 120000; |
2351 | Serge | 346 | } |
347 | } |
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348 | |||
349 | static void |
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350 | parse_general_features(struct drm_i915_private *dev_priv, |
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6084 | serge | 351 | const struct bdb_header *bdb) |
2351 | Serge | 352 | { |
6084 | serge | 353 | const struct bdb_general_features *general; |
2351 | Serge | 354 | |
355 | general = find_section(bdb, BDB_GENERAL_FEATURES); |
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6937 | serge | 356 | if (!general) |
357 | return; |
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358 | |||
4104 | Serge | 359 | dev_priv->vbt.int_tv_support = general->int_tv_support; |
6937 | serge | 360 | /* int_crt_support can't be trusted on earlier platforms */ |
361 | if (bdb->version >= 155 && |
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362 | (HAS_DDI(dev_priv) || IS_VALLEYVIEW(dev_priv))) |
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4104 | Serge | 363 | dev_priv->vbt.int_crt_support = general->int_crt_support; |
364 | dev_priv->vbt.lvds_use_ssc = general->enable_ssc; |
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365 | dev_priv->vbt.lvds_ssc_freq = |
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6937 | serge | 366 | intel_bios_ssc_frequency(dev_priv, general->ssc_freq); |
4104 | Serge | 367 | dev_priv->vbt.display_clock_mode = general->display_clock_mode; |
368 | dev_priv->vbt.fdi_rx_polarity_inverted = general->fdi_rx_polarity_inverted; |
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3746 | Serge | 369 | DRM_DEBUG_KMS("BDB_GENERAL_FEATURES int_tv_support %d int_crt_support %d lvds_use_ssc %d lvds_ssc_freq %d display_clock_mode %d fdi_rx_polarity_inverted %d\n", |
4104 | Serge | 370 | dev_priv->vbt.int_tv_support, |
371 | dev_priv->vbt.int_crt_support, |
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372 | dev_priv->vbt.lvds_use_ssc, |
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373 | dev_priv->vbt.lvds_ssc_freq, |
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374 | dev_priv->vbt.display_clock_mode, |
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375 | dev_priv->vbt.fdi_rx_polarity_inverted); |
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2351 | Serge | 376 | } |
377 | |||
378 | static void |
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379 | parse_general_definitions(struct drm_i915_private *dev_priv, |
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6084 | serge | 380 | const struct bdb_header *bdb) |
2351 | Serge | 381 | { |
6084 | serge | 382 | const struct bdb_general_definitions *general; |
2351 | Serge | 383 | |
384 | general = find_section(bdb, BDB_GENERAL_DEFINITIONS); |
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385 | if (general) { |
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386 | u16 block_size = get_blocksize(general); |
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387 | if (block_size >= sizeof(*general)) { |
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388 | int bus_pin = general->crt_ddc_gmbus_pin; |
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389 | DRM_DEBUG_KMS("crt_ddc_bus_pin: %d\n", bus_pin); |
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6084 | serge | 390 | if (intel_gmbus_is_valid_pin(dev_priv, bus_pin)) |
4104 | Serge | 391 | dev_priv->vbt.crt_ddc_pin = bus_pin; |
2351 | Serge | 392 | } else { |
393 | DRM_DEBUG_KMS("BDB_GD too small (%d). Invalid.\n", |
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6084 | serge | 394 | block_size); |
2351 | Serge | 395 | } |
396 | } |
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397 | } |
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398 | |||
6084 | serge | 399 | static const union child_device_config * |
400 | child_device_ptr(const struct bdb_general_definitions *p_defs, int i) |
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401 | { |
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402 | return (const void *) &p_defs->devices[i * p_defs->child_dev_size]; |
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403 | } |
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404 | |||
2351 | Serge | 405 | static void |
406 | parse_sdvo_device_mapping(struct drm_i915_private *dev_priv, |
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6084 | serge | 407 | const struct bdb_header *bdb) |
2351 | Serge | 408 | { |
409 | struct sdvo_device_mapping *p_mapping; |
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6084 | serge | 410 | const struct bdb_general_definitions *p_defs; |
411 | const struct old_child_dev_config *child; /* legacy */ |
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2351 | Serge | 412 | int i, child_device_num, count; |
413 | u16 block_size; |
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414 | |||
415 | p_defs = find_section(bdb, BDB_GENERAL_DEFINITIONS); |
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416 | if (!p_defs) { |
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417 | DRM_DEBUG_KMS("No general definition block is found, unable to construct sdvo mapping.\n"); |
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418 | return; |
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419 | } |
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6084 | serge | 420 | |
421 | /* |
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422 | * Only parse SDVO mappings when the general definitions block child |
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423 | * device size matches that of the *legacy* child device config |
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424 | * struct. Thus, SDVO mapping will be skipped for newer VBT. |
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2351 | Serge | 425 | */ |
6084 | serge | 426 | if (p_defs->child_dev_size != sizeof(*child)) { |
427 | DRM_DEBUG_KMS("Unsupported child device size for SDVO mapping.\n"); |
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2351 | Serge | 428 | return; |
429 | } |
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430 | /* get the block size of general definitions */ |
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431 | block_size = get_blocksize(p_defs); |
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432 | /* get the number of child device */ |
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433 | child_device_num = (block_size - sizeof(*p_defs)) / |
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6084 | serge | 434 | p_defs->child_dev_size; |
2351 | Serge | 435 | count = 0; |
436 | for (i = 0; i < child_device_num; i++) { |
||
6084 | serge | 437 | child = &child_device_ptr(p_defs, i)->old; |
438 | if (!child->device_type) { |
||
2351 | Serge | 439 | /* skip the device block if device type is invalid */ |
440 | continue; |
||
441 | } |
||
6084 | serge | 442 | if (child->slave_addr != SLAVE_ADDR1 && |
443 | child->slave_addr != SLAVE_ADDR2) { |
||
2351 | Serge | 444 | /* |
445 | * If the slave address is neither 0x70 nor 0x72, |
||
446 | * it is not a SDVO device. Skip it. |
||
447 | */ |
||
448 | continue; |
||
449 | } |
||
6084 | serge | 450 | if (child->dvo_port != DEVICE_PORT_DVOB && |
451 | child->dvo_port != DEVICE_PORT_DVOC) { |
||
2351 | Serge | 452 | /* skip the incorrect SDVO port */ |
453 | DRM_DEBUG_KMS("Incorrect SDVO port. Skip it\n"); |
||
454 | continue; |
||
455 | } |
||
456 | DRM_DEBUG_KMS("the SDVO device with slave addr %2x is found on" |
||
6084 | serge | 457 | " %s port\n", |
458 | child->slave_addr, |
||
459 | (child->dvo_port == DEVICE_PORT_DVOB) ? |
||
460 | "SDVOB" : "SDVOC"); |
||
461 | p_mapping = &(dev_priv->sdvo_mappings[child->dvo_port - 1]); |
||
2351 | Serge | 462 | if (!p_mapping->initialized) { |
6084 | serge | 463 | p_mapping->dvo_port = child->dvo_port; |
464 | p_mapping->slave_addr = child->slave_addr; |
||
465 | p_mapping->dvo_wiring = child->dvo_wiring; |
||
466 | p_mapping->ddc_pin = child->ddc_pin; |
||
467 | p_mapping->i2c_pin = child->i2c_pin; |
||
2351 | Serge | 468 | p_mapping->initialized = 1; |
469 | DRM_DEBUG_KMS("SDVO device: dvo=%x, addr=%x, wiring=%d, ddc_pin=%d, i2c_pin=%d\n", |
||
470 | p_mapping->dvo_port, |
||
471 | p_mapping->slave_addr, |
||
472 | p_mapping->dvo_wiring, |
||
473 | p_mapping->ddc_pin, |
||
474 | p_mapping->i2c_pin); |
||
475 | } else { |
||
476 | DRM_DEBUG_KMS("Maybe one SDVO port is shared by " |
||
477 | "two SDVO device.\n"); |
||
478 | } |
||
6084 | serge | 479 | if (child->slave2_addr) { |
2351 | Serge | 480 | /* Maybe this is a SDVO device with multiple inputs */ |
481 | /* And the mapping info is not added */ |
||
482 | DRM_DEBUG_KMS("there exists the slave2_addr. Maybe this" |
||
483 | " is a SDVO device with multiple inputs.\n"); |
||
484 | } |
||
485 | count++; |
||
486 | } |
||
487 | |||
488 | if (!count) { |
||
489 | /* No SDVO device info is found */ |
||
490 | DRM_DEBUG_KMS("No SDVO device info is found in VBT\n"); |
||
491 | } |
||
492 | return; |
||
493 | } |
||
494 | |||
495 | static void |
||
496 | parse_driver_features(struct drm_i915_private *dev_priv, |
||
6084 | serge | 497 | const struct bdb_header *bdb) |
2351 | Serge | 498 | { |
6084 | serge | 499 | const struct bdb_driver_features *driver; |
2351 | Serge | 500 | |
501 | driver = find_section(bdb, BDB_DRIVER_FEATURES); |
||
502 | if (!driver) |
||
503 | return; |
||
504 | |||
4560 | Serge | 505 | if (driver->lvds_config == BDB_DRIVER_FEATURE_EDP) |
4104 | Serge | 506 | dev_priv->vbt.edp_support = 1; |
2351 | Serge | 507 | |
508 | if (driver->dual_frequency) |
||
509 | dev_priv->render_reclock_avail = true; |
||
5060 | serge | 510 | |
511 | DRM_DEBUG_KMS("DRRS State Enabled:%d\n", driver->drrs_enabled); |
||
512 | /* |
||
513 | * If DRRS is not supported, drrs_type has to be set to 0. |
||
514 | * This is because, VBT is configured in such a way that |
||
515 | * static DRRS is 0 and DRRS not supported is represented by |
||
516 | * driver->drrs_enabled=false |
||
517 | */ |
||
518 | if (!driver->drrs_enabled) |
||
519 | dev_priv->vbt.drrs_type = DRRS_NOT_SUPPORTED; |
||
2351 | Serge | 520 | } |
521 | |||
522 | static void |
||
6084 | serge | 523 | parse_edp(struct drm_i915_private *dev_priv, const struct bdb_header *bdb) |
2351 | Serge | 524 | { |
6084 | serge | 525 | const struct bdb_edp *edp; |
526 | const struct edp_power_seq *edp_pps; |
||
527 | const struct edp_link_params *edp_link_params; |
||
2351 | Serge | 528 | |
529 | edp = find_section(bdb, BDB_EDP); |
||
530 | if (!edp) { |
||
4560 | Serge | 531 | if (dev_priv->vbt.edp_support) |
3120 | serge | 532 | DRM_DEBUG_KMS("No eDP BDB found but eDP panel supported.\n"); |
2351 | Serge | 533 | return; |
534 | } |
||
535 | |||
536 | switch ((edp->color_depth >> (panel_type * 2)) & 3) { |
||
537 | case EDP_18BPP: |
||
4104 | Serge | 538 | dev_priv->vbt.edp_bpp = 18; |
2351 | Serge | 539 | break; |
540 | case EDP_24BPP: |
||
4104 | Serge | 541 | dev_priv->vbt.edp_bpp = 24; |
2351 | Serge | 542 | break; |
543 | case EDP_30BPP: |
||
4104 | Serge | 544 | dev_priv->vbt.edp_bpp = 30; |
2351 | Serge | 545 | break; |
546 | } |
||
547 | |||
548 | /* Get the eDP sequencing and link info */ |
||
549 | edp_pps = &edp->power_seqs[panel_type]; |
||
550 | edp_link_params = &edp->link_params[panel_type]; |
||
551 | |||
4104 | Serge | 552 | dev_priv->vbt.edp_pps = *edp_pps; |
2351 | Serge | 553 | |
5060 | serge | 554 | switch (edp_link_params->rate) { |
555 | case EDP_RATE_1_62: |
||
556 | dev_priv->vbt.edp_rate = DP_LINK_BW_1_62; |
||
557 | break; |
||
558 | case EDP_RATE_2_7: |
||
559 | dev_priv->vbt.edp_rate = DP_LINK_BW_2_7; |
||
560 | break; |
||
561 | default: |
||
562 | DRM_DEBUG_KMS("VBT has unknown eDP link rate value %u\n", |
||
563 | edp_link_params->rate); |
||
564 | break; |
||
565 | } |
||
566 | |||
2351 | Serge | 567 | switch (edp_link_params->lanes) { |
5060 | serge | 568 | case EDP_LANE_1: |
4104 | Serge | 569 | dev_priv->vbt.edp_lanes = 1; |
2351 | Serge | 570 | break; |
5060 | serge | 571 | case EDP_LANE_2: |
4104 | Serge | 572 | dev_priv->vbt.edp_lanes = 2; |
2351 | Serge | 573 | break; |
5060 | serge | 574 | case EDP_LANE_4: |
4104 | Serge | 575 | dev_priv->vbt.edp_lanes = 4; |
2351 | Serge | 576 | break; |
5060 | serge | 577 | default: |
578 | DRM_DEBUG_KMS("VBT has unknown eDP lane count value %u\n", |
||
579 | edp_link_params->lanes); |
||
580 | break; |
||
2351 | Serge | 581 | } |
5060 | serge | 582 | |
2351 | Serge | 583 | switch (edp_link_params->preemphasis) { |
5060 | serge | 584 | case EDP_PREEMPHASIS_NONE: |
5354 | serge | 585 | dev_priv->vbt.edp_preemphasis = DP_TRAIN_PRE_EMPH_LEVEL_0; |
2351 | Serge | 586 | break; |
5060 | serge | 587 | case EDP_PREEMPHASIS_3_5dB: |
5354 | serge | 588 | dev_priv->vbt.edp_preemphasis = DP_TRAIN_PRE_EMPH_LEVEL_1; |
2351 | Serge | 589 | break; |
5060 | serge | 590 | case EDP_PREEMPHASIS_6dB: |
5354 | serge | 591 | dev_priv->vbt.edp_preemphasis = DP_TRAIN_PRE_EMPH_LEVEL_2; |
2351 | Serge | 592 | break; |
5060 | serge | 593 | case EDP_PREEMPHASIS_9_5dB: |
5354 | serge | 594 | dev_priv->vbt.edp_preemphasis = DP_TRAIN_PRE_EMPH_LEVEL_3; |
2351 | Serge | 595 | break; |
5060 | serge | 596 | default: |
597 | DRM_DEBUG_KMS("VBT has unknown eDP pre-emphasis value %u\n", |
||
598 | edp_link_params->preemphasis); |
||
599 | break; |
||
2351 | Serge | 600 | } |
5060 | serge | 601 | |
2351 | Serge | 602 | switch (edp_link_params->vswing) { |
5060 | serge | 603 | case EDP_VSWING_0_4V: |
5354 | serge | 604 | dev_priv->vbt.edp_vswing = DP_TRAIN_VOLTAGE_SWING_LEVEL_0; |
2351 | Serge | 605 | break; |
5060 | serge | 606 | case EDP_VSWING_0_6V: |
5354 | serge | 607 | dev_priv->vbt.edp_vswing = DP_TRAIN_VOLTAGE_SWING_LEVEL_1; |
2351 | Serge | 608 | break; |
5060 | serge | 609 | case EDP_VSWING_0_8V: |
5354 | serge | 610 | dev_priv->vbt.edp_vswing = DP_TRAIN_VOLTAGE_SWING_LEVEL_2; |
2351 | Serge | 611 | break; |
5060 | serge | 612 | case EDP_VSWING_1_2V: |
5354 | serge | 613 | dev_priv->vbt.edp_vswing = DP_TRAIN_VOLTAGE_SWING_LEVEL_3; |
2351 | Serge | 614 | break; |
5060 | serge | 615 | default: |
616 | DRM_DEBUG_KMS("VBT has unknown eDP voltage swing value %u\n", |
||
617 | edp_link_params->vswing); |
||
618 | break; |
||
2351 | Serge | 619 | } |
6084 | serge | 620 | |
621 | if (bdb->version >= 173) { |
||
622 | uint8_t vswing; |
||
623 | |||
624 | /* Don't read from VBT if module parameter has valid value*/ |
||
625 | if (i915.edp_vswing) { |
||
626 | dev_priv->edp_low_vswing = i915.edp_vswing == 1; |
||
627 | } else { |
||
628 | vswing = (edp->edp_vswing_preemph >> (panel_type * 4)) & 0xF; |
||
629 | dev_priv->edp_low_vswing = vswing == 0; |
||
630 | } |
||
631 | } |
||
2351 | Serge | 632 | } |
633 | |||
6084 | serge | 634 | static void |
635 | parse_psr(struct drm_i915_private *dev_priv, const struct bdb_header *bdb) |
||
636 | { |
||
637 | const struct bdb_psr *psr; |
||
638 | const struct psr_table *psr_table; |
||
639 | |||
640 | psr = find_section(bdb, BDB_PSR); |
||
641 | if (!psr) { |
||
642 | DRM_DEBUG_KMS("No PSR BDB found.\n"); |
||
643 | return; |
||
644 | } |
||
645 | |||
646 | psr_table = &psr->psr_table[panel_type]; |
||
647 | |||
648 | dev_priv->vbt.psr.full_link = psr_table->full_link; |
||
649 | dev_priv->vbt.psr.require_aux_wakeup = psr_table->require_aux_to_wakeup; |
||
650 | |||
651 | /* Allowed VBT values goes from 0 to 15 */ |
||
652 | dev_priv->vbt.psr.idle_frames = psr_table->idle_frames < 0 ? 0 : |
||
653 | psr_table->idle_frames > 15 ? 15 : psr_table->idle_frames; |
||
654 | |||
655 | switch (psr_table->lines_to_wait) { |
||
656 | case 0: |
||
657 | dev_priv->vbt.psr.lines_to_wait = PSR_0_LINES_TO_WAIT; |
||
658 | break; |
||
659 | case 1: |
||
660 | dev_priv->vbt.psr.lines_to_wait = PSR_1_LINE_TO_WAIT; |
||
661 | break; |
||
662 | case 2: |
||
663 | dev_priv->vbt.psr.lines_to_wait = PSR_4_LINES_TO_WAIT; |
||
664 | break; |
||
665 | case 3: |
||
666 | dev_priv->vbt.psr.lines_to_wait = PSR_8_LINES_TO_WAIT; |
||
667 | break; |
||
668 | default: |
||
669 | DRM_DEBUG_KMS("VBT has unknown PSR lines to wait %u\n", |
||
670 | psr_table->lines_to_wait); |
||
671 | break; |
||
672 | } |
||
673 | |||
674 | dev_priv->vbt.psr.tp1_wakeup_time = psr_table->tp1_wakeup_time; |
||
675 | dev_priv->vbt.psr.tp2_tp3_wakeup_time = psr_table->tp2_tp3_wakeup_time; |
||
676 | } |
||
677 | |||
5060 | serge | 678 | static u8 *goto_next_sequence(u8 *data, int *size) |
679 | { |
||
680 | u16 len; |
||
681 | int tmp = *size; |
||
682 | |||
683 | if (--tmp < 0) |
||
684 | return NULL; |
||
685 | |||
686 | /* goto first element */ |
||
687 | data++; |
||
688 | while (1) { |
||
689 | switch (*data) { |
||
690 | case MIPI_SEQ_ELEM_SEND_PKT: |
||
691 | /* |
||
692 | * skip by this element payload size |
||
693 | * skip elem id, command flag and data type |
||
694 | */ |
||
695 | tmp -= 5; |
||
696 | if (tmp < 0) |
||
697 | return NULL; |
||
698 | |||
699 | data += 3; |
||
700 | len = *((u16 *)data); |
||
701 | |||
702 | tmp -= len; |
||
703 | if (tmp < 0) |
||
704 | return NULL; |
||
705 | |||
706 | /* skip by len */ |
||
707 | data = data + 2 + len; |
||
708 | break; |
||
709 | case MIPI_SEQ_ELEM_DELAY: |
||
710 | /* skip by elem id, and delay is 4 bytes */ |
||
711 | tmp -= 5; |
||
712 | if (tmp < 0) |
||
713 | return NULL; |
||
714 | |||
715 | data += 5; |
||
716 | break; |
||
717 | case MIPI_SEQ_ELEM_GPIO: |
||
718 | tmp -= 3; |
||
719 | if (tmp < 0) |
||
720 | return NULL; |
||
721 | |||
722 | data += 3; |
||
723 | break; |
||
724 | default: |
||
725 | DRM_ERROR("Unknown element\n"); |
||
726 | return NULL; |
||
727 | } |
||
728 | |||
729 | /* end of sequence ? */ |
||
730 | if (*data == 0) |
||
731 | break; |
||
732 | } |
||
733 | |||
734 | /* goto next sequence or end of block byte */ |
||
735 | if (--tmp < 0) |
||
736 | return NULL; |
||
737 | |||
738 | data++; |
||
739 | |||
740 | /* update amount of data left for the sequence block to be parsed */ |
||
741 | *size = tmp; |
||
742 | return data; |
||
743 | } |
||
744 | |||
2351 | Serge | 745 | static void |
6084 | serge | 746 | parse_mipi(struct drm_i915_private *dev_priv, const struct bdb_header *bdb) |
4560 | Serge | 747 | { |
6084 | serge | 748 | const struct bdb_mipi_config *start; |
749 | const struct bdb_mipi_sequence *sequence; |
||
750 | const struct mipi_config *config; |
||
751 | const struct mipi_pps_data *pps; |
||
752 | u8 *data; |
||
753 | const u8 *seq_data; |
||
5060 | serge | 754 | int i, panel_id, seq_size; |
755 | u16 block_size; |
||
4560 | Serge | 756 | |
5060 | serge | 757 | /* parse MIPI blocks only if LFP type is MIPI */ |
758 | if (!dev_priv->vbt.has_mipi) |
||
4560 | Serge | 759 | return; |
5060 | serge | 760 | |
761 | /* Initialize this to undefined indicating no generic MIPI support */ |
||
762 | dev_priv->vbt.dsi.panel_id = MIPI_DSI_UNDEFINED_PANEL_ID; |
||
763 | |||
764 | /* Block #40 is already parsed and panel_fixed_mode is |
||
765 | * stored in dev_priv->lfp_lvds_vbt_mode |
||
766 | * resuse this when needed |
||
767 | */ |
||
768 | |||
769 | /* Parse #52 for panel index used from panel_type already |
||
770 | * parsed |
||
771 | */ |
||
772 | start = find_section(bdb, BDB_MIPI_CONFIG); |
||
773 | if (!start) { |
||
774 | DRM_DEBUG_KMS("No MIPI config BDB found"); |
||
775 | return; |
||
4560 | Serge | 776 | } |
777 | |||
5060 | serge | 778 | DRM_DEBUG_DRIVER("Found MIPI Config block, panel index = %d\n", |
779 | panel_type); |
||
780 | |||
781 | /* |
||
782 | * get hold of the correct configuration block and pps data as per |
||
783 | * the panel_type as index |
||
784 | */ |
||
785 | config = &start->config[panel_type]; |
||
786 | pps = &start->pps[panel_type]; |
||
787 | |||
788 | /* store as of now full data. Trim when we realise all is not needed */ |
||
789 | dev_priv->vbt.dsi.config = kmemdup(config, sizeof(struct mipi_config), GFP_KERNEL); |
||
790 | if (!dev_priv->vbt.dsi.config) |
||
791 | return; |
||
792 | |||
793 | dev_priv->vbt.dsi.pps = kmemdup(pps, sizeof(struct mipi_pps_data), GFP_KERNEL); |
||
794 | if (!dev_priv->vbt.dsi.pps) { |
||
795 | kfree(dev_priv->vbt.dsi.config); |
||
796 | return; |
||
797 | } |
||
798 | |||
799 | /* We have mandatory mipi config blocks. Initialize as generic panel */ |
||
800 | dev_priv->vbt.dsi.panel_id = MIPI_DSI_GENERIC_PANEL_ID; |
||
801 | |||
802 | /* Check if we have sequence block as well */ |
||
803 | sequence = find_section(bdb, BDB_MIPI_SEQUENCE); |
||
804 | if (!sequence) { |
||
805 | DRM_DEBUG_KMS("No MIPI Sequence found, parsing complete\n"); |
||
806 | return; |
||
807 | } |
||
808 | |||
6084 | serge | 809 | /* Fail gracefully for forward incompatible sequence block. */ |
810 | if (sequence->version >= 3) { |
||
811 | DRM_ERROR("Unable to parse MIPI Sequence Block v3+\n"); |
||
812 | return; |
||
813 | } |
||
814 | |||
5060 | serge | 815 | DRM_DEBUG_DRIVER("Found MIPI sequence block\n"); |
816 | |||
817 | block_size = get_blocksize(sequence); |
||
818 | |||
819 | /* |
||
820 | * parse the sequence block for individual sequences |
||
821 | */ |
||
822 | dev_priv->vbt.dsi.seq_version = sequence->version; |
||
823 | |||
824 | seq_data = &sequence->data[0]; |
||
825 | |||
826 | /* |
||
827 | * sequence block is variable length and hence we need to parse and |
||
828 | * get the sequence data for specific panel id |
||
829 | */ |
||
830 | for (i = 0; i < MAX_MIPI_CONFIGURATIONS; i++) { |
||
831 | panel_id = *seq_data; |
||
832 | seq_size = *((u16 *) (seq_data + 1)); |
||
833 | if (panel_id == panel_type) |
||
834 | break; |
||
835 | |||
836 | /* skip the sequence including seq header of 3 bytes */ |
||
837 | seq_data = seq_data + 3 + seq_size; |
||
838 | if ((seq_data - &sequence->data[0]) > block_size) { |
||
839 | DRM_ERROR("Sequence start is beyond sequence block size, corrupted sequence block\n"); |
||
840 | return; |
||
841 | } |
||
842 | } |
||
843 | |||
844 | if (i == MAX_MIPI_CONFIGURATIONS) { |
||
845 | DRM_ERROR("Sequence block detected but no valid configuration\n"); |
||
846 | return; |
||
847 | } |
||
848 | |||
849 | /* check if found sequence is completely within the sequence block |
||
850 | * just being paranoid */ |
||
851 | if (seq_size > block_size) { |
||
852 | DRM_ERROR("Corrupted sequence/size, bailing out\n"); |
||
853 | return; |
||
854 | } |
||
855 | |||
856 | /* skip the panel id(1 byte) and seq size(2 bytes) */ |
||
857 | dev_priv->vbt.dsi.data = kmemdup(seq_data + 3, seq_size, GFP_KERNEL); |
||
858 | if (!dev_priv->vbt.dsi.data) |
||
859 | return; |
||
860 | |||
861 | /* |
||
862 | * loop into the sequence data and split into multiple sequneces |
||
863 | * There are only 5 types of sequences as of now |
||
864 | */ |
||
865 | data = dev_priv->vbt.dsi.data; |
||
866 | dev_priv->vbt.dsi.size = seq_size; |
||
867 | |||
868 | /* two consecutive 0x00 indicate end of all sequences */ |
||
869 | while (1) { |
||
870 | int seq_id = *data; |
||
871 | if (MIPI_SEQ_MAX > seq_id && seq_id > MIPI_SEQ_UNDEFINED) { |
||
872 | dev_priv->vbt.dsi.sequence[seq_id] = data; |
||
873 | DRM_DEBUG_DRIVER("Found mipi sequence - %d\n", seq_id); |
||
874 | } else { |
||
875 | DRM_ERROR("undefined sequence\n"); |
||
876 | goto err; |
||
877 | } |
||
878 | |||
879 | /* partial parsing to skip elements */ |
||
880 | data = goto_next_sequence(data, &seq_size); |
||
881 | |||
882 | if (data == NULL) { |
||
883 | DRM_ERROR("Sequence elements going beyond block itself. Sequence block parsing failed\n"); |
||
884 | goto err; |
||
885 | } |
||
886 | |||
887 | if (*data == 0) |
||
888 | break; /* end of sequence reached */ |
||
889 | } |
||
890 | |||
891 | DRM_DEBUG_DRIVER("MIPI related vbt parsing complete\n"); |
||
892 | return; |
||
893 | err: |
||
894 | kfree(dev_priv->vbt.dsi.data); |
||
895 | dev_priv->vbt.dsi.data = NULL; |
||
896 | |||
897 | /* error during parsing so set all pointers to null |
||
898 | * because of partial parsing */ |
||
899 | memset(dev_priv->vbt.dsi.sequence, 0, sizeof(dev_priv->vbt.dsi.sequence)); |
||
4560 | Serge | 900 | } |
901 | |||
6084 | serge | 902 | static u8 translate_iboost(u8 val) |
903 | { |
||
904 | static const u8 mapping[] = { 1, 3, 7 }; /* See VBT spec */ |
||
905 | |||
906 | if (val >= ARRAY_SIZE(mapping)) { |
||
907 | DRM_DEBUG_KMS("Unsupported I_boost value found in VBT (%d), display may not work properly\n", val); |
||
908 | return 0; |
||
909 | } |
||
910 | return mapping[val]; |
||
911 | } |
||
912 | |||
4560 | Serge | 913 | static void parse_ddi_port(struct drm_i915_private *dev_priv, enum port port, |
6084 | serge | 914 | const struct bdb_header *bdb) |
4560 | Serge | 915 | { |
916 | union child_device_config *it, *child = NULL; |
||
917 | struct ddi_vbt_port_info *info = &dev_priv->vbt.ddi_port_info[port]; |
||
918 | uint8_t hdmi_level_shift; |
||
919 | int i, j; |
||
920 | bool is_dvi, is_hdmi, is_dp, is_edp, is_crt; |
||
6084 | serge | 921 | uint8_t aux_channel, ddc_pin; |
4560 | Serge | 922 | /* Each DDI port can have more than one value on the "DVO Port" field, |
923 | * so look for all the possible values for each port and abort if more |
||
924 | * than one is found. */ |
||
6084 | serge | 925 | int dvo_ports[][3] = { |
926 | {DVO_PORT_HDMIA, DVO_PORT_DPA, -1}, |
||
927 | {DVO_PORT_HDMIB, DVO_PORT_DPB, -1}, |
||
928 | {DVO_PORT_HDMIC, DVO_PORT_DPC, -1}, |
||
929 | {DVO_PORT_HDMID, DVO_PORT_DPD, -1}, |
||
930 | {DVO_PORT_CRT, DVO_PORT_HDMIE, DVO_PORT_DPE}, |
||
4560 | Serge | 931 | }; |
932 | |||
933 | /* Find the child device to use, abort if more than one found. */ |
||
934 | for (i = 0; i < dev_priv->vbt.child_dev_num; i++) { |
||
935 | it = dev_priv->vbt.child_dev + i; |
||
936 | |||
6084 | serge | 937 | for (j = 0; j < 3; j++) { |
4560 | Serge | 938 | if (dvo_ports[port][j] == -1) |
939 | break; |
||
940 | |||
941 | if (it->common.dvo_port == dvo_ports[port][j]) { |
||
942 | if (child) { |
||
943 | DRM_DEBUG_KMS("More than one child device for port %c in VBT.\n", |
||
944 | port_name(port)); |
||
945 | return; |
||
946 | } |
||
947 | child = it; |
||
948 | } |
||
949 | } |
||
950 | } |
||
951 | if (!child) |
||
952 | return; |
||
953 | |||
954 | aux_channel = child->raw[25]; |
||
6084 | serge | 955 | ddc_pin = child->common.ddc_pin; |
4560 | Serge | 956 | |
957 | is_dvi = child->common.device_type & DEVICE_TYPE_TMDS_DVI_SIGNALING; |
||
958 | is_dp = child->common.device_type & DEVICE_TYPE_DISPLAYPORT_OUTPUT; |
||
959 | is_crt = child->common.device_type & DEVICE_TYPE_ANALOG_OUTPUT; |
||
960 | is_hdmi = is_dvi && (child->common.device_type & DEVICE_TYPE_NOT_HDMI_OUTPUT) == 0; |
||
961 | is_edp = is_dp && (child->common.device_type & DEVICE_TYPE_INTERNAL_CONNECTOR); |
||
962 | |||
963 | info->supports_dvi = is_dvi; |
||
964 | info->supports_hdmi = is_hdmi; |
||
965 | info->supports_dp = is_dp; |
||
966 | |||
967 | DRM_DEBUG_KMS("Port %c VBT info: DP:%d HDMI:%d DVI:%d EDP:%d CRT:%d\n", |
||
968 | port_name(port), is_dp, is_hdmi, is_dvi, is_edp, is_crt); |
||
969 | |||
970 | if (is_edp && is_dvi) |
||
971 | DRM_DEBUG_KMS("Internal DP port %c is TMDS compatible\n", |
||
972 | port_name(port)); |
||
973 | if (is_crt && port != PORT_E) |
||
974 | DRM_DEBUG_KMS("Port %c is analog\n", port_name(port)); |
||
975 | if (is_crt && (is_dvi || is_dp)) |
||
976 | DRM_DEBUG_KMS("Analog port %c is also DP or TMDS compatible\n", |
||
977 | port_name(port)); |
||
978 | if (is_dvi && (port == PORT_A || port == PORT_E)) |
||
5354 | serge | 979 | DRM_DEBUG_KMS("Port %c is TMDS compatible\n", port_name(port)); |
4560 | Serge | 980 | if (!is_dvi && !is_dp && !is_crt) |
981 | DRM_DEBUG_KMS("Port %c is not DP/TMDS/CRT compatible\n", |
||
982 | port_name(port)); |
||
983 | if (is_edp && (port == PORT_B || port == PORT_C || port == PORT_E)) |
||
984 | DRM_DEBUG_KMS("Port %c is internal DP\n", port_name(port)); |
||
985 | |||
986 | if (is_dvi) { |
||
6084 | serge | 987 | if (port == PORT_E) { |
988 | info->alternate_ddc_pin = ddc_pin; |
||
989 | /* if DDIE share ddc pin with other port, then |
||
990 | * dvi/hdmi couldn't exist on the shared port. |
||
991 | * Otherwise they share the same ddc bin and system |
||
992 | * couldn't communicate with them seperately. */ |
||
993 | if (ddc_pin == DDC_PIN_B) { |
||
994 | dev_priv->vbt.ddi_port_info[PORT_B].supports_dvi = 0; |
||
995 | dev_priv->vbt.ddi_port_info[PORT_B].supports_hdmi = 0; |
||
996 | } else if (ddc_pin == DDC_PIN_C) { |
||
997 | dev_priv->vbt.ddi_port_info[PORT_C].supports_dvi = 0; |
||
998 | dev_priv->vbt.ddi_port_info[PORT_C].supports_hdmi = 0; |
||
999 | } else if (ddc_pin == DDC_PIN_D) { |
||
1000 | dev_priv->vbt.ddi_port_info[PORT_D].supports_dvi = 0; |
||
1001 | dev_priv->vbt.ddi_port_info[PORT_D].supports_hdmi = 0; |
||
1002 | } |
||
1003 | } else if (ddc_pin == DDC_PIN_B && port != PORT_B) |
||
4560 | Serge | 1004 | DRM_DEBUG_KMS("Unexpected DDC pin for port B\n"); |
6084 | serge | 1005 | else if (ddc_pin == DDC_PIN_C && port != PORT_C) |
4560 | Serge | 1006 | DRM_DEBUG_KMS("Unexpected DDC pin for port C\n"); |
6084 | serge | 1007 | else if (ddc_pin == DDC_PIN_D && port != PORT_D) |
4560 | Serge | 1008 | DRM_DEBUG_KMS("Unexpected DDC pin for port D\n"); |
1009 | } |
||
1010 | |||
1011 | if (is_dp) { |
||
6084 | serge | 1012 | if (port == PORT_E) { |
1013 | info->alternate_aux_channel = aux_channel; |
||
1014 | /* if DDIE share aux channel with other port, then |
||
1015 | * DP couldn't exist on the shared port. Otherwise |
||
1016 | * they share the same aux channel and system |
||
1017 | * couldn't communicate with them seperately. */ |
||
1018 | if (aux_channel == DP_AUX_A) |
||
1019 | dev_priv->vbt.ddi_port_info[PORT_A].supports_dp = 0; |
||
1020 | else if (aux_channel == DP_AUX_B) |
||
1021 | dev_priv->vbt.ddi_port_info[PORT_B].supports_dp = 0; |
||
1022 | else if (aux_channel == DP_AUX_C) |
||
1023 | dev_priv->vbt.ddi_port_info[PORT_C].supports_dp = 0; |
||
1024 | else if (aux_channel == DP_AUX_D) |
||
1025 | dev_priv->vbt.ddi_port_info[PORT_D].supports_dp = 0; |
||
1026 | } |
||
1027 | else if (aux_channel == DP_AUX_A && port != PORT_A) |
||
4560 | Serge | 1028 | DRM_DEBUG_KMS("Unexpected AUX channel for port A\n"); |
6084 | serge | 1029 | else if (aux_channel == DP_AUX_B && port != PORT_B) |
4560 | Serge | 1030 | DRM_DEBUG_KMS("Unexpected AUX channel for port B\n"); |
6084 | serge | 1031 | else if (aux_channel == DP_AUX_C && port != PORT_C) |
4560 | Serge | 1032 | DRM_DEBUG_KMS("Unexpected AUX channel for port C\n"); |
6084 | serge | 1033 | else if (aux_channel == DP_AUX_D && port != PORT_D) |
4560 | Serge | 1034 | DRM_DEBUG_KMS("Unexpected AUX channel for port D\n"); |
1035 | } |
||
1036 | |||
1037 | if (bdb->version >= 158) { |
||
1038 | /* The VBT HDMI level shift values match the table we have. */ |
||
1039 | hdmi_level_shift = child->raw[7] & 0xF; |
||
6084 | serge | 1040 | DRM_DEBUG_KMS("VBT HDMI level shift for port %c: %d\n", |
1041 | port_name(port), |
||
1042 | hdmi_level_shift); |
||
1043 | info->hdmi_level_shift = hdmi_level_shift; |
||
1044 | } |
||
1045 | |||
1046 | /* Parse the I_boost config for SKL and above */ |
||
1047 | if (bdb->version >= 196 && (child->common.flags_1 & IBOOST_ENABLE)) { |
||
1048 | info->dp_boost_level = translate_iboost(child->common.iboost_level & 0xF); |
||
1049 | DRM_DEBUG_KMS("VBT (e)DP boost level for port %c: %d\n", |
||
1050 | port_name(port), info->dp_boost_level); |
||
1051 | info->hdmi_boost_level = translate_iboost(child->common.iboost_level >> 4); |
||
1052 | DRM_DEBUG_KMS("VBT HDMI boost level for port %c: %d\n", |
||
1053 | port_name(port), info->hdmi_boost_level); |
||
1054 | } |
||
4560 | Serge | 1055 | } |
1056 | |||
1057 | static void parse_ddi_ports(struct drm_i915_private *dev_priv, |
||
6084 | serge | 1058 | const struct bdb_header *bdb) |
4560 | Serge | 1059 | { |
1060 | enum port port; |
||
1061 | |||
6937 | serge | 1062 | if (!HAS_DDI(dev_priv)) |
4560 | Serge | 1063 | return; |
1064 | |||
1065 | if (!dev_priv->vbt.child_dev_num) |
||
1066 | return; |
||
1067 | |||
1068 | if (bdb->version < 155) |
||
1069 | return; |
||
1070 | |||
1071 | for (port = PORT_A; port < I915_MAX_PORTS; port++) |
||
1072 | parse_ddi_port(dev_priv, port, bdb); |
||
1073 | } |
||
1074 | |||
1075 | static void |
||
2351 | Serge | 1076 | parse_device_mapping(struct drm_i915_private *dev_priv, |
6084 | serge | 1077 | const struct bdb_header *bdb) |
2351 | Serge | 1078 | { |
6084 | serge | 1079 | const struct bdb_general_definitions *p_defs; |
1080 | const union child_device_config *p_child; |
||
1081 | union child_device_config *child_dev_ptr; |
||
2351 | Serge | 1082 | int i, child_device_num, count; |
6084 | serge | 1083 | u8 expected_size; |
1084 | u16 block_size; |
||
2351 | Serge | 1085 | |
1086 | p_defs = find_section(bdb, BDB_GENERAL_DEFINITIONS); |
||
1087 | if (!p_defs) { |
||
1088 | DRM_DEBUG_KMS("No general definition block is found, no devices defined.\n"); |
||
1089 | return; |
||
1090 | } |
||
6084 | serge | 1091 | if (bdb->version < 195) { |
1092 | expected_size = sizeof(struct old_child_dev_config); |
||
1093 | } else if (bdb->version == 195) { |
||
1094 | expected_size = 37; |
||
1095 | } else if (bdb->version <= 197) { |
||
1096 | expected_size = 38; |
||
1097 | } else { |
||
1098 | expected_size = 38; |
||
1099 | BUILD_BUG_ON(sizeof(*p_child) < 38); |
||
1100 | DRM_DEBUG_DRIVER("Expected child device config size for VBT version %u not known; assuming %u\n", |
||
1101 | bdb->version, expected_size); |
||
1102 | } |
||
1103 | |||
1104 | /* The legacy sized child device config is the minimum we need. */ |
||
1105 | if (p_defs->child_dev_size < sizeof(struct old_child_dev_config)) { |
||
1106 | DRM_ERROR("Child device config size %u is too small.\n", |
||
1107 | p_defs->child_dev_size); |
||
2351 | Serge | 1108 | return; |
1109 | } |
||
6084 | serge | 1110 | |
1111 | /* Flag an error for unexpected size, but continue anyway. */ |
||
1112 | if (p_defs->child_dev_size != expected_size) |
||
1113 | DRM_ERROR("Unexpected child device config size %u (expected %u for VBT version %u)\n", |
||
1114 | p_defs->child_dev_size, expected_size, bdb->version); |
||
1115 | |||
2351 | Serge | 1116 | /* get the block size of general definitions */ |
1117 | block_size = get_blocksize(p_defs); |
||
1118 | /* get the number of child device */ |
||
1119 | child_device_num = (block_size - sizeof(*p_defs)) / |
||
6084 | serge | 1120 | p_defs->child_dev_size; |
2351 | Serge | 1121 | count = 0; |
1122 | /* get the number of child device that is present */ |
||
1123 | for (i = 0; i < child_device_num; i++) { |
||
6084 | serge | 1124 | p_child = child_device_ptr(p_defs, i); |
4560 | Serge | 1125 | if (!p_child->common.device_type) { |
2351 | Serge | 1126 | /* skip the device block if device type is invalid */ |
1127 | continue; |
||
1128 | } |
||
1129 | count++; |
||
1130 | } |
||
1131 | if (!count) { |
||
1132 | DRM_DEBUG_KMS("no child dev is parsed from VBT\n"); |
||
1133 | return; |
||
1134 | } |
||
4104 | Serge | 1135 | dev_priv->vbt.child_dev = kcalloc(count, sizeof(*p_child), GFP_KERNEL); |
1136 | if (!dev_priv->vbt.child_dev) { |
||
2351 | Serge | 1137 | DRM_DEBUG_KMS("No memory space for child device\n"); |
1138 | return; |
||
1139 | } |
||
1140 | |||
4104 | Serge | 1141 | dev_priv->vbt.child_dev_num = count; |
2351 | Serge | 1142 | count = 0; |
1143 | for (i = 0; i < child_device_num; i++) { |
||
6084 | serge | 1144 | p_child = child_device_ptr(p_defs, i); |
4560 | Serge | 1145 | if (!p_child->common.device_type) { |
2351 | Serge | 1146 | /* skip the device block if device type is invalid */ |
1147 | continue; |
||
1148 | } |
||
5060 | serge | 1149 | |
1150 | if (p_child->common.dvo_port >= DVO_PORT_MIPIA |
||
1151 | && p_child->common.dvo_port <= DVO_PORT_MIPID |
||
1152 | &&p_child->common.device_type & DEVICE_TYPE_MIPI_OUTPUT) { |
||
1153 | DRM_DEBUG_KMS("Found MIPI as LFP\n"); |
||
1154 | dev_priv->vbt.has_mipi = 1; |
||
1155 | dev_priv->vbt.dsi.port = p_child->common.dvo_port; |
||
1156 | } |
||
1157 | |||
4104 | Serge | 1158 | child_dev_ptr = dev_priv->vbt.child_dev + count; |
2351 | Serge | 1159 | count++; |
6084 | serge | 1160 | |
1161 | /* |
||
1162 | * Copy as much as we know (sizeof) and is available |
||
1163 | * (child_dev_size) of the child device. Accessing the data must |
||
1164 | * depend on VBT version. |
||
1165 | */ |
||
1166 | memcpy(child_dev_ptr, p_child, |
||
1167 | min_t(size_t, p_defs->child_dev_size, sizeof(*p_child))); |
||
2351 | Serge | 1168 | } |
1169 | return; |
||
1170 | } |
||
1171 | |||
1172 | static void |
||
1173 | init_vbt_defaults(struct drm_i915_private *dev_priv) |
||
1174 | { |
||
4560 | Serge | 1175 | enum port port; |
2351 | Serge | 1176 | |
6084 | serge | 1177 | dev_priv->vbt.crt_ddc_pin = GMBUS_PIN_VGADDC; |
2351 | Serge | 1178 | |
5060 | serge | 1179 | /* Default to having backlight */ |
1180 | dev_priv->vbt.backlight.present = true; |
||
1181 | |||
2351 | Serge | 1182 | /* LFP panel data */ |
4104 | Serge | 1183 | dev_priv->vbt.lvds_dither = 1; |
1184 | dev_priv->vbt.lvds_vbt = 0; |
||
2351 | Serge | 1185 | |
1186 | /* SDVO panel data */ |
||
4104 | Serge | 1187 | dev_priv->vbt.sdvo_lvds_vbt_mode = NULL; |
2351 | Serge | 1188 | |
1189 | /* general features */ |
||
4104 | Serge | 1190 | dev_priv->vbt.int_tv_support = 1; |
1191 | dev_priv->vbt.int_crt_support = 1; |
||
2351 | Serge | 1192 | |
1193 | /* Default to using SSC */ |
||
4104 | Serge | 1194 | dev_priv->vbt.lvds_use_ssc = 1; |
4560 | Serge | 1195 | /* |
1196 | * Core/SandyBridge/IvyBridge use alternative (120MHz) reference |
||
1197 | * clock for LVDS. |
||
1198 | */ |
||
6937 | serge | 1199 | dev_priv->vbt.lvds_ssc_freq = intel_bios_ssc_frequency(dev_priv, |
1200 | !HAS_PCH_SPLIT(dev_priv)); |
||
4560 | Serge | 1201 | DRM_DEBUG_KMS("Set default to SSC at %d kHz\n", dev_priv->vbt.lvds_ssc_freq); |
1202 | |||
1203 | for (port = PORT_A; port < I915_MAX_PORTS; port++) { |
||
1204 | struct ddi_vbt_port_info *info = |
||
1205 | &dev_priv->vbt.ddi_port_info[port]; |
||
1206 | |||
5354 | serge | 1207 | info->hdmi_level_shift = HDMI_LEVEL_SHIFT_UNKNOWN; |
4560 | Serge | 1208 | |
1209 | info->supports_dvi = (port != PORT_A && port != PORT_E); |
||
1210 | info->supports_hdmi = info->supports_dvi; |
||
1211 | info->supports_dp = (port != PORT_E); |
||
1212 | } |
||
2351 | Serge | 1213 | } |
1214 | |||
6937 | serge | 1215 | static const struct bdb_header *get_bdb_header(const struct vbt_header *vbt) |
5097 | serge | 1216 | { |
6937 | serge | 1217 | const void *_vbt = vbt; |
1218 | |||
1219 | return _vbt + vbt->bdb_offset; |
||
5097 | serge | 1220 | } |
1221 | |||
6937 | serge | 1222 | /** |
1223 | * intel_bios_is_valid_vbt - does the given buffer contain a valid VBT |
||
1224 | * @buf: pointer to a buffer to validate |
||
1225 | * @size: size of the buffer |
||
1226 | * |
||
1227 | * Returns true on valid VBT. |
||
1228 | */ |
||
1229 | bool intel_bios_is_valid_vbt(const void *buf, size_t size) |
||
5097 | serge | 1230 | { |
6937 | serge | 1231 | const struct vbt_header *vbt = buf; |
6084 | serge | 1232 | const struct bdb_header *bdb; |
3120 | serge | 1233 | |
6937 | serge | 1234 | if (!vbt) |
1235 | return false; |
||
1236 | |||
1237 | if (sizeof(struct vbt_header) > size) { |
||
5060 | serge | 1238 | DRM_DEBUG_DRIVER("VBT header incomplete\n"); |
6937 | serge | 1239 | return false; |
5060 | serge | 1240 | } |
1241 | |||
1242 | if (memcmp(vbt->signature, "$VBT", 4)) { |
||
1243 | DRM_DEBUG_DRIVER("VBT invalid signature\n"); |
||
6937 | serge | 1244 | return false; |
5060 | serge | 1245 | } |
1246 | |||
6937 | serge | 1247 | if (vbt->bdb_offset + sizeof(struct bdb_header) > size) { |
5060 | serge | 1248 | DRM_DEBUG_DRIVER("BDB header incomplete\n"); |
6937 | serge | 1249 | return false; |
5060 | serge | 1250 | } |
1251 | |||
6937 | serge | 1252 | bdb = get_bdb_header(vbt); |
1253 | if (vbt->bdb_offset + bdb->bdb_size > size) { |
||
5060 | serge | 1254 | DRM_DEBUG_DRIVER("BDB incomplete\n"); |
6937 | serge | 1255 | return false; |
5060 | serge | 1256 | } |
1257 | |||
6937 | serge | 1258 | return vbt; |
5060 | serge | 1259 | } |
1260 | |||
6937 | serge | 1261 | static const struct vbt_header *find_vbt(void __iomem *bios, size_t size) |
6084 | serge | 1262 | { |
1263 | size_t i; |
||
1264 | |||
1265 | /* Scour memory looking for the VBT signature. */ |
||
1266 | for (i = 0; i + 4 < size; i++) { |
||
6937 | serge | 1267 | void *vbt; |
1268 | |||
1269 | if (ioread32(bios + i) != *((const u32 *) "$VBT")) |
||
1270 | continue; |
||
1271 | |||
6084 | serge | 1272 | /* |
6937 | serge | 1273 | * This is the one place where we explicitly discard the address |
1274 | * space (__iomem) of the BIOS/VBT. |
||
6084 | serge | 1275 | */ |
6937 | serge | 1276 | vbt = (void __force *) bios + i; |
1277 | if (intel_bios_is_valid_vbt(vbt, size - i)) |
||
1278 | return vbt; |
||
6084 | serge | 1279 | |
1280 | break; |
||
1281 | } |
||
1282 | |||
6937 | serge | 1283 | return NULL; |
6084 | serge | 1284 | } |
1285 | |||
2351 | Serge | 1286 | /** |
6937 | serge | 1287 | * intel_bios_init - find VBT and initialize settings from the BIOS |
2351 | Serge | 1288 | * @dev: DRM device |
1289 | * |
||
1290 | * Loads the Video BIOS and checks that the VBT exists. Sets scratch registers |
||
1291 | * to appropriate values. |
||
1292 | * |
||
1293 | * Returns 0 on success, nonzero on failure. |
||
1294 | */ |
||
3031 | serge | 1295 | int |
6937 | serge | 1296 | intel_bios_init(struct drm_i915_private *dev_priv) |
2351 | Serge | 1297 | { |
6937 | serge | 1298 | struct pci_dev *pdev = dev_priv->dev->pdev; |
1299 | const struct vbt_header *vbt = dev_priv->opregion.vbt; |
||
1300 | const struct bdb_header *bdb; |
||
2351 | Serge | 1301 | u8 __iomem *bios = NULL; |
1302 | |||
6937 | serge | 1303 | if (HAS_PCH_NOP(dev_priv)) |
3746 | Serge | 1304 | return -ENODEV; |
1305 | |||
2351 | Serge | 1306 | init_vbt_defaults(dev_priv); |
1307 | |||
6937 | serge | 1308 | if (!vbt) { |
6084 | serge | 1309 | size_t size; |
2351 | Serge | 1310 | |
2360 | Serge | 1311 | bios = pci_map_rom(pdev, &size); |
2351 | Serge | 1312 | if (!bios) |
1313 | return -1; |
||
1314 | |||
6937 | serge | 1315 | vbt = find_vbt(bios, size); |
1316 | if (!vbt) { |
||
2351 | Serge | 1317 | pci_unmap_rom(pdev, bios); |
1318 | return -1; |
||
1319 | } |
||
6937 | serge | 1320 | |
1321 | DRM_DEBUG_KMS("Found valid VBT in PCI ROM\n"); |
||
2351 | Serge | 1322 | } |
1323 | |||
6937 | serge | 1324 | bdb = get_bdb_header(vbt); |
1325 | |||
1326 | DRM_DEBUG_KMS("VBT signature \"%.*s\", BDB version %d\n", |
||
1327 | (int)sizeof(vbt->signature), vbt->signature, bdb->version); |
||
1328 | |||
2351 | Serge | 1329 | /* Grab useful general definitions */ |
1330 | parse_general_features(dev_priv, bdb); |
||
1331 | parse_general_definitions(dev_priv, bdb); |
||
1332 | parse_lfp_panel_data(dev_priv, bdb); |
||
4560 | Serge | 1333 | parse_lfp_backlight(dev_priv, bdb); |
2351 | Serge | 1334 | parse_sdvo_panel_data(dev_priv, bdb); |
1335 | parse_sdvo_device_mapping(dev_priv, bdb); |
||
1336 | parse_device_mapping(dev_priv, bdb); |
||
1337 | parse_driver_features(dev_priv, bdb); |
||
1338 | parse_edp(dev_priv, bdb); |
||
6084 | serge | 1339 | parse_psr(dev_priv, bdb); |
4560 | Serge | 1340 | parse_mipi(dev_priv, bdb); |
1341 | parse_ddi_ports(dev_priv, bdb); |
||
2351 | Serge | 1342 | |
1343 | if (bios) |
||
1344 | pci_unmap_rom(pdev, bios); |
||
1345 | |||
1346 | return 0; |
||
1347 | }>>=>>>>>=>>>>>>>>>>>>>>>>><>><>><>><>><>> |