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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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27 | #include |
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3031 | serge | 28 | #include |
29 | #include |
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2351 | Serge | 30 | #include "i915_drv.h" |
31 | #include "intel_bios.h" |
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32 | |||
33 | #define SLAVE_ADDR1 0x70 |
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34 | #define SLAVE_ADDR2 0x72 |
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35 | |||
36 | static int panel_type; |
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37 | |||
38 | static void * |
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39 | find_section(struct bdb_header *bdb, int section_id) |
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40 | { |
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41 | u8 *base = (u8 *)bdb; |
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42 | int index = 0; |
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43 | u16 total, current_size; |
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44 | u8 current_id; |
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45 | |||
46 | /* skip to first section */ |
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47 | index += bdb->header_size; |
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48 | total = bdb->bdb_size; |
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49 | |||
50 | /* walk the sections looking for section_id */ |
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51 | while (index < total) { |
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52 | current_id = *(base + index); |
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53 | index++; |
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54 | current_size = *((u16 *)(base + index)); |
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55 | index += 2; |
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56 | if (current_id == section_id) |
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57 | return base + index; |
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58 | index += current_size; |
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59 | } |
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60 | |||
61 | return NULL; |
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62 | } |
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63 | |||
64 | static u16 |
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65 | get_blocksize(void *p) |
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66 | { |
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67 | u16 *block_ptr, block_size; |
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68 | |||
69 | block_ptr = (u16 *)((char *)p - 2); |
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70 | block_size = *block_ptr; |
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71 | return block_size; |
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72 | } |
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73 | |||
74 | static void |
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75 | fill_detail_timing_data(struct drm_display_mode *panel_fixed_mode, |
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76 | const struct lvds_dvo_timing *dvo_timing) |
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77 | { |
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78 | panel_fixed_mode->hdisplay = (dvo_timing->hactive_hi << 8) | |
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79 | dvo_timing->hactive_lo; |
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80 | panel_fixed_mode->hsync_start = panel_fixed_mode->hdisplay + |
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81 | ((dvo_timing->hsync_off_hi << 8) | dvo_timing->hsync_off_lo); |
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82 | panel_fixed_mode->hsync_end = panel_fixed_mode->hsync_start + |
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83 | dvo_timing->hsync_pulse_width; |
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84 | panel_fixed_mode->htotal = panel_fixed_mode->hdisplay + |
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85 | ((dvo_timing->hblank_hi << 8) | dvo_timing->hblank_lo); |
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86 | |||
87 | panel_fixed_mode->vdisplay = (dvo_timing->vactive_hi << 8) | |
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88 | dvo_timing->vactive_lo; |
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89 | panel_fixed_mode->vsync_start = panel_fixed_mode->vdisplay + |
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90 | dvo_timing->vsync_off; |
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91 | panel_fixed_mode->vsync_end = panel_fixed_mode->vsync_start + |
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92 | dvo_timing->vsync_pulse_width; |
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93 | panel_fixed_mode->vtotal = panel_fixed_mode->vdisplay + |
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94 | ((dvo_timing->vblank_hi << 8) | dvo_timing->vblank_lo); |
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95 | panel_fixed_mode->clock = dvo_timing->clock * 10; |
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96 | panel_fixed_mode->type = DRM_MODE_TYPE_PREFERRED; |
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97 | |||
98 | if (dvo_timing->hsync_positive) |
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99 | panel_fixed_mode->flags |= DRM_MODE_FLAG_PHSYNC; |
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100 | else |
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101 | panel_fixed_mode->flags |= DRM_MODE_FLAG_NHSYNC; |
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102 | |||
103 | if (dvo_timing->vsync_positive) |
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104 | panel_fixed_mode->flags |= DRM_MODE_FLAG_PVSYNC; |
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105 | else |
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106 | panel_fixed_mode->flags |= DRM_MODE_FLAG_NVSYNC; |
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107 | |||
108 | /* Some VBTs have bogus h/vtotal values */ |
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109 | if (panel_fixed_mode->hsync_end > panel_fixed_mode->htotal) |
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110 | panel_fixed_mode->htotal = panel_fixed_mode->hsync_end + 1; |
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111 | if (panel_fixed_mode->vsync_end > panel_fixed_mode->vtotal) |
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112 | panel_fixed_mode->vtotal = panel_fixed_mode->vsync_end + 1; |
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113 | |||
114 | drm_mode_set_name(panel_fixed_mode); |
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115 | } |
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116 | |||
117 | static bool |
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118 | lvds_dvo_timing_equal_size(const struct lvds_dvo_timing *a, |
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119 | const struct lvds_dvo_timing *b) |
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120 | { |
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121 | if (a->hactive_hi != b->hactive_hi || |
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122 | a->hactive_lo != b->hactive_lo) |
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123 | return false; |
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124 | |||
125 | if (a->hsync_off_hi != b->hsync_off_hi || |
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126 | a->hsync_off_lo != b->hsync_off_lo) |
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127 | return false; |
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128 | |||
129 | if (a->hsync_pulse_width != b->hsync_pulse_width) |
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130 | return false; |
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131 | |||
132 | if (a->hblank_hi != b->hblank_hi || |
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133 | a->hblank_lo != b->hblank_lo) |
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134 | return false; |
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135 | |||
136 | if (a->vactive_hi != b->vactive_hi || |
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137 | a->vactive_lo != b->vactive_lo) |
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138 | return false; |
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139 | |||
140 | if (a->vsync_off != b->vsync_off) |
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141 | return false; |
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142 | |||
143 | if (a->vsync_pulse_width != b->vsync_pulse_width) |
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144 | return false; |
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145 | |||
146 | if (a->vblank_hi != b->vblank_hi || |
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147 | a->vblank_lo != b->vblank_lo) |
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148 | return false; |
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149 | |||
150 | return true; |
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151 | } |
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152 | |||
153 | static const struct lvds_dvo_timing * |
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154 | get_lvds_dvo_timing(const struct bdb_lvds_lfp_data *lvds_lfp_data, |
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155 | const struct bdb_lvds_lfp_data_ptrs *lvds_lfp_data_ptrs, |
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156 | int index) |
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157 | { |
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158 | /* |
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159 | * the size of fp_timing varies on the different platform. |
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160 | * So calculate the DVO timing relative offset in LVDS data |
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161 | * entry to get the DVO timing entry |
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162 | */ |
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163 | |||
164 | int lfp_data_size = |
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165 | lvds_lfp_data_ptrs->ptr[1].dvo_timing_offset - |
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166 | lvds_lfp_data_ptrs->ptr[0].dvo_timing_offset; |
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167 | int dvo_timing_offset = |
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168 | lvds_lfp_data_ptrs->ptr[0].dvo_timing_offset - |
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169 | lvds_lfp_data_ptrs->ptr[0].fp_timing_offset; |
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170 | char *entry = (char *)lvds_lfp_data->data + lfp_data_size * index; |
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171 | |||
172 | return (struct lvds_dvo_timing *)(entry + dvo_timing_offset); |
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173 | } |
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174 | |||
3031 | serge | 175 | /* get lvds_fp_timing entry |
176 | * this function may return NULL if the corresponding entry is invalid |
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177 | */ |
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178 | static const struct lvds_fp_timing * |
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179 | get_lvds_fp_timing(const struct bdb_header *bdb, |
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180 | const struct bdb_lvds_lfp_data *data, |
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181 | const struct bdb_lvds_lfp_data_ptrs *ptrs, |
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182 | int index) |
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183 | { |
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184 | size_t data_ofs = (const u8 *)data - (const u8 *)bdb; |
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185 | u16 data_size = ((const u16 *)data)[-1]; /* stored in header */ |
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186 | size_t ofs; |
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187 | |||
188 | if (index >= ARRAY_SIZE(ptrs->ptr)) |
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189 | return NULL; |
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190 | ofs = ptrs->ptr[index].fp_timing_offset; |
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191 | if (ofs < data_ofs || |
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192 | ofs + sizeof(struct lvds_fp_timing) > data_ofs + data_size) |
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193 | return NULL; |
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194 | return (const struct lvds_fp_timing *)((const u8 *)bdb + ofs); |
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195 | } |
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196 | |||
2351 | Serge | 197 | /* Try to find integrated panel data */ |
198 | static void |
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199 | parse_lfp_panel_data(struct drm_i915_private *dev_priv, |
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200 | struct bdb_header *bdb) |
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201 | { |
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202 | const struct bdb_lvds_options *lvds_options; |
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203 | const struct bdb_lvds_lfp_data *lvds_lfp_data; |
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204 | const struct bdb_lvds_lfp_data_ptrs *lvds_lfp_data_ptrs; |
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205 | const struct lvds_dvo_timing *panel_dvo_timing; |
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3031 | serge | 206 | const struct lvds_fp_timing *fp_timing; |
2351 | Serge | 207 | struct drm_display_mode *panel_fixed_mode; |
208 | int i, downclock; |
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209 | |||
210 | lvds_options = find_section(bdb, BDB_LVDS_OPTIONS); |
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211 | if (!lvds_options) |
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212 | return; |
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213 | |||
214 | dev_priv->lvds_dither = lvds_options->pixel_dither; |
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215 | if (lvds_options->panel_type == 0xff) |
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216 | return; |
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217 | |||
218 | panel_type = lvds_options->panel_type; |
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219 | |||
220 | lvds_lfp_data = find_section(bdb, BDB_LVDS_LFP_DATA); |
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221 | if (!lvds_lfp_data) |
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222 | return; |
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223 | |||
224 | lvds_lfp_data_ptrs = find_section(bdb, BDB_LVDS_LFP_DATA_PTRS); |
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225 | if (!lvds_lfp_data_ptrs) |
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226 | return; |
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227 | |||
228 | dev_priv->lvds_vbt = 1; |
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229 | |||
230 | panel_dvo_timing = get_lvds_dvo_timing(lvds_lfp_data, |
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231 | lvds_lfp_data_ptrs, |
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232 | lvds_options->panel_type); |
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233 | |||
234 | panel_fixed_mode = kzalloc(sizeof(*panel_fixed_mode), GFP_KERNEL); |
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235 | if (!panel_fixed_mode) |
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236 | return; |
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237 | |||
238 | fill_detail_timing_data(panel_fixed_mode, panel_dvo_timing); |
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239 | |||
240 | dev_priv->lfp_lvds_vbt_mode = panel_fixed_mode; |
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241 | |||
242 | DRM_DEBUG_KMS("Found panel mode in BIOS VBT tables:\n"); |
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243 | drm_mode_debug_printmodeline(panel_fixed_mode); |
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244 | |||
245 | /* |
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246 | * Iterate over the LVDS panel timing info to find the lowest clock |
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247 | * for the native resolution. |
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248 | */ |
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249 | downclock = panel_dvo_timing->clock; |
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250 | for (i = 0; i < 16; i++) { |
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251 | const struct lvds_dvo_timing *dvo_timing; |
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252 | |||
253 | dvo_timing = get_lvds_dvo_timing(lvds_lfp_data, |
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254 | lvds_lfp_data_ptrs, |
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255 | i); |
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256 | if (lvds_dvo_timing_equal_size(dvo_timing, panel_dvo_timing) && |
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257 | dvo_timing->clock < downclock) |
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258 | downclock = dvo_timing->clock; |
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259 | } |
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260 | |||
261 | if (downclock < panel_dvo_timing->clock && i915_lvds_downclock) { |
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262 | dev_priv->lvds_downclock_avail = 1; |
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263 | dev_priv->lvds_downclock = downclock * 10; |
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264 | DRM_DEBUG_KMS("LVDS downclock is found in VBT. " |
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265 | "Normal Clock %dKHz, downclock %dKHz\n", |
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266 | panel_fixed_mode->clock, 10*downclock); |
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267 | } |
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3031 | serge | 268 | |
269 | fp_timing = get_lvds_fp_timing(bdb, lvds_lfp_data, |
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270 | lvds_lfp_data_ptrs, |
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271 | lvds_options->panel_type); |
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272 | if (fp_timing) { |
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273 | /* check the resolution, just to be sure */ |
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274 | if (fp_timing->x_res == panel_fixed_mode->hdisplay && |
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275 | fp_timing->y_res == panel_fixed_mode->vdisplay) { |
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276 | dev_priv->bios_lvds_val = fp_timing->lvds_reg_val; |
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277 | DRM_DEBUG_KMS("VBT initial LVDS value %x\n", |
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278 | dev_priv->bios_lvds_val); |
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279 | } |
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280 | } |
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2351 | Serge | 281 | } |
282 | |||
283 | /* Try to find sdvo panel data */ |
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284 | static void |
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285 | parse_sdvo_panel_data(struct drm_i915_private *dev_priv, |
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286 | struct bdb_header *bdb) |
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287 | { |
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288 | struct lvds_dvo_timing *dvo_timing; |
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289 | struct drm_display_mode *panel_fixed_mode; |
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290 | int index; |
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291 | |||
292 | index = i915_vbt_sdvo_panel_type; |
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3031 | serge | 293 | if (index == -2) { |
294 | DRM_DEBUG_KMS("Ignore SDVO panel mode from BIOS VBT tables.\n"); |
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295 | return; |
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296 | } |
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297 | |||
2351 | Serge | 298 | if (index == -1) { |
299 | struct bdb_sdvo_lvds_options *sdvo_lvds_options; |
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300 | |||
301 | sdvo_lvds_options = find_section(bdb, BDB_SDVO_LVDS_OPTIONS); |
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302 | if (!sdvo_lvds_options) |
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303 | return; |
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304 | |||
305 | index = sdvo_lvds_options->panel_type; |
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306 | } |
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307 | |||
308 | dvo_timing = find_section(bdb, BDB_SDVO_PANEL_DTDS); |
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309 | if (!dvo_timing) |
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310 | return; |
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311 | |||
312 | panel_fixed_mode = kzalloc(sizeof(*panel_fixed_mode), GFP_KERNEL); |
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313 | if (!panel_fixed_mode) |
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314 | return; |
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315 | |||
316 | fill_detail_timing_data(panel_fixed_mode, dvo_timing + index); |
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317 | |||
318 | dev_priv->sdvo_lvds_vbt_mode = panel_fixed_mode; |
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319 | |||
320 | DRM_DEBUG_KMS("Found SDVO panel mode in BIOS VBT tables:\n"); |
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321 | drm_mode_debug_printmodeline(panel_fixed_mode); |
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322 | } |
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323 | |||
324 | static int intel_bios_ssc_frequency(struct drm_device *dev, |
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325 | bool alternate) |
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326 | { |
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327 | switch (INTEL_INFO(dev)->gen) { |
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328 | case 2: |
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329 | return alternate ? 66 : 48; |
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330 | case 3: |
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331 | case 4: |
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332 | return alternate ? 100 : 96; |
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333 | default: |
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334 | return alternate ? 100 : 120; |
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335 | } |
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336 | } |
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337 | |||
338 | static void |
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339 | parse_general_features(struct drm_i915_private *dev_priv, |
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340 | struct bdb_header *bdb) |
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341 | { |
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342 | struct drm_device *dev = dev_priv->dev; |
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343 | struct bdb_general_features *general; |
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344 | |||
345 | general = find_section(bdb, BDB_GENERAL_FEATURES); |
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346 | if (general) { |
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347 | dev_priv->int_tv_support = general->int_tv_support; |
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348 | dev_priv->int_crt_support = general->int_crt_support; |
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349 | dev_priv->lvds_use_ssc = general->enable_ssc; |
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350 | dev_priv->lvds_ssc_freq = |
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351 | intel_bios_ssc_frequency(dev, general->ssc_freq); |
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352 | dev_priv->display_clock_mode = general->display_clock_mode; |
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353 | 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\n", |
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354 | dev_priv->int_tv_support, |
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355 | dev_priv->int_crt_support, |
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356 | dev_priv->lvds_use_ssc, |
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357 | dev_priv->lvds_ssc_freq, |
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358 | dev_priv->display_clock_mode); |
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359 | } |
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360 | } |
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361 | |||
362 | static void |
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363 | parse_general_definitions(struct drm_i915_private *dev_priv, |
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364 | struct bdb_header *bdb) |
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365 | { |
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366 | struct bdb_general_definitions *general; |
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367 | |||
368 | general = find_section(bdb, BDB_GENERAL_DEFINITIONS); |
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369 | if (general) { |
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370 | u16 block_size = get_blocksize(general); |
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371 | if (block_size >= sizeof(*general)) { |
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372 | int bus_pin = general->crt_ddc_gmbus_pin; |
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373 | DRM_DEBUG_KMS("crt_ddc_bus_pin: %d\n", bus_pin); |
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3031 | serge | 374 | if (intel_gmbus_is_port_valid(bus_pin)) |
2351 | Serge | 375 | dev_priv->crt_ddc_pin = bus_pin; |
376 | } else { |
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377 | DRM_DEBUG_KMS("BDB_GD too small (%d). Invalid.\n", |
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378 | block_size); |
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379 | } |
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380 | } |
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381 | } |
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382 | |||
383 | static void |
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384 | parse_sdvo_device_mapping(struct drm_i915_private *dev_priv, |
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385 | struct bdb_header *bdb) |
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386 | { |
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387 | struct sdvo_device_mapping *p_mapping; |
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388 | struct bdb_general_definitions *p_defs; |
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389 | struct child_device_config *p_child; |
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390 | int i, child_device_num, count; |
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391 | u16 block_size; |
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392 | |||
393 | p_defs = find_section(bdb, BDB_GENERAL_DEFINITIONS); |
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394 | if (!p_defs) { |
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395 | DRM_DEBUG_KMS("No general definition block is found, unable to construct sdvo mapping.\n"); |
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396 | return; |
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397 | } |
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398 | /* judge whether the size of child device meets the requirements. |
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399 | * If the child device size obtained from general definition block |
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400 | * is different with sizeof(struct child_device_config), skip the |
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401 | * parsing of sdvo device info |
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402 | */ |
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403 | if (p_defs->child_dev_size != sizeof(*p_child)) { |
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404 | /* different child dev size . Ignore it */ |
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405 | DRM_DEBUG_KMS("different child size is found. Invalid.\n"); |
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406 | return; |
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407 | } |
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408 | /* get the block size of general definitions */ |
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409 | block_size = get_blocksize(p_defs); |
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410 | /* get the number of child device */ |
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411 | child_device_num = (block_size - sizeof(*p_defs)) / |
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412 | sizeof(*p_child); |
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413 | count = 0; |
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414 | for (i = 0; i < child_device_num; i++) { |
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415 | p_child = &(p_defs->devices[i]); |
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416 | if (!p_child->device_type) { |
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417 | /* skip the device block if device type is invalid */ |
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418 | continue; |
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419 | } |
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420 | if (p_child->slave_addr != SLAVE_ADDR1 && |
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421 | p_child->slave_addr != SLAVE_ADDR2) { |
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422 | /* |
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423 | * If the slave address is neither 0x70 nor 0x72, |
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424 | * it is not a SDVO device. Skip it. |
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425 | */ |
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426 | continue; |
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427 | } |
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428 | if (p_child->dvo_port != DEVICE_PORT_DVOB && |
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429 | p_child->dvo_port != DEVICE_PORT_DVOC) { |
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430 | /* skip the incorrect SDVO port */ |
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431 | DRM_DEBUG_KMS("Incorrect SDVO port. Skip it\n"); |
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432 | continue; |
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433 | } |
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434 | DRM_DEBUG_KMS("the SDVO device with slave addr %2x is found on" |
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435 | " %s port\n", |
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436 | p_child->slave_addr, |
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437 | (p_child->dvo_port == DEVICE_PORT_DVOB) ? |
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438 | "SDVOB" : "SDVOC"); |
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439 | p_mapping = &(dev_priv->sdvo_mappings[p_child->dvo_port - 1]); |
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440 | if (!p_mapping->initialized) { |
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441 | p_mapping->dvo_port = p_child->dvo_port; |
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442 | p_mapping->slave_addr = p_child->slave_addr; |
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443 | p_mapping->dvo_wiring = p_child->dvo_wiring; |
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444 | p_mapping->ddc_pin = p_child->ddc_pin; |
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445 | p_mapping->i2c_pin = p_child->i2c_pin; |
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446 | p_mapping->initialized = 1; |
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447 | DRM_DEBUG_KMS("SDVO device: dvo=%x, addr=%x, wiring=%d, ddc_pin=%d, i2c_pin=%d\n", |
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448 | p_mapping->dvo_port, |
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449 | p_mapping->slave_addr, |
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450 | p_mapping->dvo_wiring, |
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451 | p_mapping->ddc_pin, |
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452 | p_mapping->i2c_pin); |
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453 | } else { |
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454 | DRM_DEBUG_KMS("Maybe one SDVO port is shared by " |
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455 | "two SDVO device.\n"); |
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456 | } |
||
457 | if (p_child->slave2_addr) { |
||
458 | /* Maybe this is a SDVO device with multiple inputs */ |
||
459 | /* And the mapping info is not added */ |
||
460 | DRM_DEBUG_KMS("there exists the slave2_addr. Maybe this" |
||
461 | " is a SDVO device with multiple inputs.\n"); |
||
462 | } |
||
463 | count++; |
||
464 | } |
||
465 | |||
466 | if (!count) { |
||
467 | /* No SDVO device info is found */ |
||
468 | DRM_DEBUG_KMS("No SDVO device info is found in VBT\n"); |
||
469 | } |
||
470 | return; |
||
471 | } |
||
472 | |||
473 | static void |
||
474 | parse_driver_features(struct drm_i915_private *dev_priv, |
||
475 | struct bdb_header *bdb) |
||
476 | { |
||
477 | struct drm_device *dev = dev_priv->dev; |
||
478 | struct bdb_driver_features *driver; |
||
479 | |||
480 | driver = find_section(bdb, BDB_DRIVER_FEATURES); |
||
481 | if (!driver) |
||
482 | return; |
||
483 | |||
484 | if (SUPPORTS_EDP(dev) && |
||
485 | driver->lvds_config == BDB_DRIVER_FEATURE_EDP) |
||
486 | dev_priv->edp.support = 1; |
||
487 | |||
488 | if (driver->dual_frequency) |
||
489 | dev_priv->render_reclock_avail = true; |
||
490 | } |
||
491 | |||
492 | static void |
||
493 | parse_edp(struct drm_i915_private *dev_priv, struct bdb_header *bdb) |
||
494 | { |
||
495 | struct bdb_edp *edp; |
||
496 | struct edp_power_seq *edp_pps; |
||
497 | struct edp_link_params *edp_link_params; |
||
498 | |||
499 | edp = find_section(bdb, BDB_EDP); |
||
500 | if (!edp) { |
||
501 | if (SUPPORTS_EDP(dev_priv->dev) && dev_priv->edp.support) { |
||
502 | DRM_DEBUG_KMS("No eDP BDB found but eDP panel " |
||
503 | "supported, assume %dbpp panel color " |
||
504 | "depth.\n", |
||
505 | dev_priv->edp.bpp); |
||
506 | } |
||
507 | return; |
||
508 | } |
||
509 | |||
510 | switch ((edp->color_depth >> (panel_type * 2)) & 3) { |
||
511 | case EDP_18BPP: |
||
512 | dev_priv->edp.bpp = 18; |
||
513 | break; |
||
514 | case EDP_24BPP: |
||
515 | dev_priv->edp.bpp = 24; |
||
516 | break; |
||
517 | case EDP_30BPP: |
||
518 | dev_priv->edp.bpp = 30; |
||
519 | break; |
||
520 | } |
||
521 | |||
522 | /* Get the eDP sequencing and link info */ |
||
523 | edp_pps = &edp->power_seqs[panel_type]; |
||
524 | edp_link_params = &edp->link_params[panel_type]; |
||
525 | |||
526 | dev_priv->edp.pps = *edp_pps; |
||
527 | |||
528 | dev_priv->edp.rate = edp_link_params->rate ? DP_LINK_BW_2_7 : |
||
529 | DP_LINK_BW_1_62; |
||
530 | switch (edp_link_params->lanes) { |
||
531 | case 0: |
||
532 | dev_priv->edp.lanes = 1; |
||
533 | break; |
||
534 | case 1: |
||
535 | dev_priv->edp.lanes = 2; |
||
536 | break; |
||
537 | case 3: |
||
538 | default: |
||
539 | dev_priv->edp.lanes = 4; |
||
540 | break; |
||
541 | } |
||
542 | switch (edp_link_params->preemphasis) { |
||
543 | case 0: |
||
544 | dev_priv->edp.preemphasis = DP_TRAIN_PRE_EMPHASIS_0; |
||
545 | break; |
||
546 | case 1: |
||
547 | dev_priv->edp.preemphasis = DP_TRAIN_PRE_EMPHASIS_3_5; |
||
548 | break; |
||
549 | case 2: |
||
550 | dev_priv->edp.preemphasis = DP_TRAIN_PRE_EMPHASIS_6; |
||
551 | break; |
||
552 | case 3: |
||
553 | dev_priv->edp.preemphasis = DP_TRAIN_PRE_EMPHASIS_9_5; |
||
554 | break; |
||
555 | } |
||
556 | switch (edp_link_params->vswing) { |
||
557 | case 0: |
||
558 | dev_priv->edp.vswing = DP_TRAIN_VOLTAGE_SWING_400; |
||
559 | break; |
||
560 | case 1: |
||
561 | dev_priv->edp.vswing = DP_TRAIN_VOLTAGE_SWING_600; |
||
562 | break; |
||
563 | case 2: |
||
564 | dev_priv->edp.vswing = DP_TRAIN_VOLTAGE_SWING_800; |
||
565 | break; |
||
566 | case 3: |
||
567 | dev_priv->edp.vswing = DP_TRAIN_VOLTAGE_SWING_1200; |
||
568 | break; |
||
569 | } |
||
570 | } |
||
571 | |||
572 | static void |
||
573 | parse_device_mapping(struct drm_i915_private *dev_priv, |
||
574 | struct bdb_header *bdb) |
||
575 | { |
||
576 | struct bdb_general_definitions *p_defs; |
||
577 | struct child_device_config *p_child, *child_dev_ptr; |
||
578 | int i, child_device_num, count; |
||
579 | u16 block_size; |
||
580 | |||
581 | p_defs = find_section(bdb, BDB_GENERAL_DEFINITIONS); |
||
582 | if (!p_defs) { |
||
583 | DRM_DEBUG_KMS("No general definition block is found, no devices defined.\n"); |
||
584 | return; |
||
585 | } |
||
586 | /* judge whether the size of child device meets the requirements. |
||
587 | * If the child device size obtained from general definition block |
||
588 | * is different with sizeof(struct child_device_config), skip the |
||
589 | * parsing of sdvo device info |
||
590 | */ |
||
591 | if (p_defs->child_dev_size != sizeof(*p_child)) { |
||
592 | /* different child dev size . Ignore it */ |
||
593 | DRM_DEBUG_KMS("different child size is found. Invalid.\n"); |
||
594 | return; |
||
595 | } |
||
596 | /* get the block size of general definitions */ |
||
597 | block_size = get_blocksize(p_defs); |
||
598 | /* get the number of child device */ |
||
599 | child_device_num = (block_size - sizeof(*p_defs)) / |
||
600 | sizeof(*p_child); |
||
601 | count = 0; |
||
602 | /* get the number of child device that is present */ |
||
603 | for (i = 0; i < child_device_num; i++) { |
||
604 | p_child = &(p_defs->devices[i]); |
||
605 | if (!p_child->device_type) { |
||
606 | /* skip the device block if device type is invalid */ |
||
607 | continue; |
||
608 | } |
||
609 | count++; |
||
610 | } |
||
611 | if (!count) { |
||
612 | DRM_DEBUG_KMS("no child dev is parsed from VBT\n"); |
||
613 | return; |
||
614 | } |
||
3031 | serge | 615 | dev_priv->child_dev = kcalloc(count, sizeof(*p_child), GFP_KERNEL); |
2351 | Serge | 616 | if (!dev_priv->child_dev) { |
617 | DRM_DEBUG_KMS("No memory space for child device\n"); |
||
618 | return; |
||
619 | } |
||
620 | |||
621 | dev_priv->child_dev_num = count; |
||
622 | count = 0; |
||
623 | for (i = 0; i < child_device_num; i++) { |
||
624 | p_child = &(p_defs->devices[i]); |
||
625 | if (!p_child->device_type) { |
||
626 | /* skip the device block if device type is invalid */ |
||
627 | continue; |
||
628 | } |
||
629 | child_dev_ptr = dev_priv->child_dev + count; |
||
630 | count++; |
||
631 | memcpy((void *)child_dev_ptr, (void *)p_child, |
||
632 | sizeof(*p_child)); |
||
633 | } |
||
634 | return; |
||
635 | } |
||
636 | |||
637 | static void |
||
638 | init_vbt_defaults(struct drm_i915_private *dev_priv) |
||
639 | { |
||
640 | struct drm_device *dev = dev_priv->dev; |
||
641 | |||
642 | dev_priv->crt_ddc_pin = GMBUS_PORT_VGADDC; |
||
643 | |||
644 | /* LFP panel data */ |
||
645 | dev_priv->lvds_dither = 1; |
||
646 | dev_priv->lvds_vbt = 0; |
||
647 | |||
648 | /* SDVO panel data */ |
||
649 | dev_priv->sdvo_lvds_vbt_mode = NULL; |
||
650 | |||
651 | /* general features */ |
||
652 | dev_priv->int_tv_support = 1; |
||
653 | dev_priv->int_crt_support = 1; |
||
654 | |||
655 | /* Default to using SSC */ |
||
656 | dev_priv->lvds_use_ssc = 1; |
||
657 | dev_priv->lvds_ssc_freq = intel_bios_ssc_frequency(dev, 1); |
||
658 | DRM_DEBUG_KMS("Set default to SSC at %dMHz\n", dev_priv->lvds_ssc_freq); |
||
659 | |||
660 | /* eDP data */ |
||
661 | dev_priv->edp.bpp = 18; |
||
662 | } |
||
663 | |||
664 | /** |
||
665 | * intel_parse_bios - find VBT and initialize settings from the BIOS |
||
666 | * @dev: DRM device |
||
667 | * |
||
668 | * Loads the Video BIOS and checks that the VBT exists. Sets scratch registers |
||
669 | * to appropriate values. |
||
670 | * |
||
671 | * Returns 0 on success, nonzero on failure. |
||
672 | */ |
||
3031 | serge | 673 | int |
2351 | Serge | 674 | intel_parse_bios(struct drm_device *dev) |
675 | { |
||
676 | struct drm_i915_private *dev_priv = dev->dev_private; |
||
677 | struct pci_dev *pdev = dev->pdev; |
||
678 | struct bdb_header *bdb = NULL; |
||
679 | u8 __iomem *bios = NULL; |
||
680 | |||
681 | init_vbt_defaults(dev_priv); |
||
682 | |||
683 | /* XXX Should this validation be moved to intel_opregion.c? */ |
||
684 | if (dev_priv->opregion.vbt) { |
||
685 | struct vbt_header *vbt = dev_priv->opregion.vbt; |
||
686 | if (memcmp(vbt->signature, "$VBT", 4) == 0) { |
||
687 | DRM_DEBUG_KMS("Using VBT from OpRegion: %20s\n", |
||
688 | vbt->signature); |
||
689 | bdb = (struct bdb_header *)((char *)vbt + vbt->bdb_offset); |
||
690 | } else |
||
691 | dev_priv->opregion.vbt = NULL; |
||
692 | } |
||
693 | |||
694 | if (bdb == NULL) { |
||
695 | struct vbt_header *vbt = NULL; |
||
696 | size_t size; |
||
697 | int i; |
||
698 | |||
2360 | Serge | 699 | bios = pci_map_rom(pdev, &size); |
2351 | Serge | 700 | if (!bios) |
701 | return -1; |
||
702 | |||
703 | /* Scour memory looking for the VBT signature */ |
||
704 | for (i = 0; i + 4 < size; i++) { |
||
705 | if (!memcmp(bios + i, "$VBT", 4)) { |
||
706 | vbt = (struct vbt_header *)(bios + i); |
||
707 | break; |
||
708 | } |
||
709 | } |
||
710 | |||
711 | if (!vbt) { |
||
3031 | serge | 712 | DRM_DEBUG_DRIVER("VBT signature missing\n"); |
2351 | Serge | 713 | pci_unmap_rom(pdev, bios); |
714 | return -1; |
||
715 | } |
||
716 | |||
717 | bdb = (struct bdb_header *)(bios + i + vbt->bdb_offset); |
||
718 | } |
||
719 | |||
720 | /* Grab useful general definitions */ |
||
721 | parse_general_features(dev_priv, bdb); |
||
722 | parse_general_definitions(dev_priv, bdb); |
||
723 | parse_lfp_panel_data(dev_priv, bdb); |
||
724 | parse_sdvo_panel_data(dev_priv, bdb); |
||
725 | parse_sdvo_device_mapping(dev_priv, bdb); |
||
726 | parse_device_mapping(dev_priv, bdb); |
||
727 | parse_driver_features(dev_priv, bdb); |
||
728 | parse_edp(dev_priv, bdb); |
||
729 | |||
730 | if (bios) |
||
731 | pci_unmap_rom(pdev, bios); |
||
732 | |||
733 | return 0; |
||
734 | } |
||
735 | |||
736 | /* Ensure that vital registers have been initialised, even if the BIOS |
||
737 | * is absent or just failing to do its job. |
||
738 | */ |
||
739 | void intel_setup_bios(struct drm_device *dev) |
||
740 | { |
||
741 | struct drm_i915_private *dev_priv = dev->dev_private; |
||
742 | |||
743 | /* Set the Panel Power On/Off timings if uninitialized. */ |
||
744 | if ((I915_READ(PP_ON_DELAYS) == 0) && (I915_READ(PP_OFF_DELAYS) == 0)) { |
||
745 | /* Set T2 to 40ms and T5 to 200ms */ |
||
746 | I915_WRITE(PP_ON_DELAYS, 0x019007d0); |
||
747 | |||
748 | /* Set T3 to 35ms and Tx to 200ms */ |
||
749 | I915_WRITE(PP_OFF_DELAYS, 0x015e07d0); |
||
750 | } |
||
751 | }>>>>>>>>><>><>><>><>><>> |