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Rev | Author | Line No. | Line |
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1123 | serge | 1 | /* |
2 | * Copyright (c) 2006 Luc Verhaegen (quirks list) |
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3 | * Copyright (c) 2007-2008 Intel Corporation |
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4 | * Jesse Barnes |
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1963 | serge | 5 | * Copyright 2010 Red Hat, Inc. |
1123 | serge | 6 | * |
7 | * DDC probing routines (drm_ddc_read & drm_do_probe_ddc_edid) originally from |
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8 | * FB layer. |
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9 | * Copyright (C) 2006 Dennis Munsie |
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10 | * |
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11 | * Permission is hereby granted, free of charge, to any person obtaining a |
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12 | * copy of this software and associated documentation files (the "Software"), |
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13 | * to deal in the Software without restriction, including without limitation |
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14 | * the rights to use, copy, modify, merge, publish, distribute, sub license, |
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15 | * and/or sell copies of the Software, and to permit persons to whom the |
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16 | * Software is furnished to do so, subject to the following conditions: |
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17 | * |
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18 | * The above copyright notice and this permission notice (including the |
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19 | * next paragraph) shall be included in all copies or substantial portions |
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20 | * of the Software. |
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21 | * |
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22 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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23 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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24 | * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL |
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25 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
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26 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING |
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27 | * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER |
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28 | * DEALINGS IN THE SOFTWARE. |
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29 | */ |
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1221 | serge | 30 | #include |
1963 | serge | 31 | #include |
1125 | serge | 32 | #include |
1123 | serge | 33 | #include "drmP.h" |
34 | #include "drm_edid.h" |
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1963 | serge | 35 | #include "drm_edid_modes.h" |
1123 | serge | 36 | |
1963 | serge | 37 | #define version_greater(edid, maj, min) \ |
38 | (((edid)->version > (maj)) || \ |
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39 | ((edid)->version == (maj) && (edid)->revision > (min))) |
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1123 | serge | 40 | |
1963 | serge | 41 | #define EDID_EST_TIMINGS 16 |
42 | #define EDID_STD_TIMINGS 8 |
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43 | #define EDID_DETAILED_TIMINGS 4 |
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44 | |||
1123 | serge | 45 | /* |
46 | * EDID blocks out in the wild have a variety of bugs, try to collect |
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47 | * them here (note that userspace may work around broken monitors first, |
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48 | * but fixes should make their way here so that the kernel "just works" |
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49 | * on as many displays as possible). |
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50 | */ |
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51 | |||
52 | /* First detailed mode wrong, use largest 60Hz mode */ |
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53 | #define EDID_QUIRK_PREFER_LARGE_60 (1 << 0) |
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54 | /* Reported 135MHz pixel clock is too high, needs adjustment */ |
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55 | #define EDID_QUIRK_135_CLOCK_TOO_HIGH (1 << 1) |
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56 | /* Prefer the largest mode at 75 Hz */ |
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57 | #define EDID_QUIRK_PREFER_LARGE_75 (1 << 2) |
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58 | /* Detail timing is in cm not mm */ |
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59 | #define EDID_QUIRK_DETAILED_IN_CM (1 << 3) |
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60 | /* Detailed timing descriptors have bogus size values, so just take the |
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61 | * maximum size and use that. |
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62 | */ |
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63 | #define EDID_QUIRK_DETAILED_USE_MAXIMUM_SIZE (1 << 4) |
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64 | /* Monitor forgot to set the first detailed is preferred bit. */ |
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65 | #define EDID_QUIRK_FIRST_DETAILED_PREFERRED (1 << 5) |
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66 | /* use +hsync +vsync for detailed mode */ |
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67 | #define EDID_QUIRK_DETAILED_SYNC_PP (1 << 6) |
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68 | |||
1963 | serge | 69 | struct detailed_mode_closure { |
70 | struct drm_connector *connector; |
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71 | struct edid *edid; |
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72 | bool preferred; |
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73 | u32 quirks; |
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74 | int modes; |
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75 | }; |
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1430 | serge | 76 | |
1179 | serge | 77 | #define LEVEL_DMT 0 |
78 | #define LEVEL_GTF 1 |
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1963 | serge | 79 | #define LEVEL_GTF2 2 |
80 | #define LEVEL_CVT 3 |
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1179 | serge | 81 | |
1123 | serge | 82 | static struct edid_quirk { |
83 | char *vendor; |
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84 | int product_id; |
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85 | u32 quirks; |
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86 | } edid_quirk_list[] = { |
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87 | /* Acer AL1706 */ |
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88 | { "ACR", 44358, EDID_QUIRK_PREFER_LARGE_60 }, |
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89 | /* Acer F51 */ |
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90 | { "API", 0x7602, EDID_QUIRK_PREFER_LARGE_60 }, |
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91 | /* Unknown Acer */ |
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92 | { "ACR", 2423, EDID_QUIRK_FIRST_DETAILED_PREFERRED }, |
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93 | |||
94 | /* Belinea 10 15 55 */ |
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95 | { "MAX", 1516, EDID_QUIRK_PREFER_LARGE_60 }, |
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96 | { "MAX", 0x77e, EDID_QUIRK_PREFER_LARGE_60 }, |
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97 | |||
98 | /* Envision Peripherals, Inc. EN-7100e */ |
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99 | { "EPI", 59264, EDID_QUIRK_135_CLOCK_TOO_HIGH }, |
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1963 | serge | 100 | /* Envision EN2028 */ |
101 | { "EPI", 8232, EDID_QUIRK_PREFER_LARGE_60 }, |
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1123 | serge | 102 | |
103 | /* Funai Electronics PM36B */ |
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104 | { "FCM", 13600, EDID_QUIRK_PREFER_LARGE_75 | |
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105 | EDID_QUIRK_DETAILED_IN_CM }, |
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106 | |||
107 | /* LG Philips LCD LP154W01-A5 */ |
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108 | { "LPL", 0, EDID_QUIRK_DETAILED_USE_MAXIMUM_SIZE }, |
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109 | { "LPL", 0x2a00, EDID_QUIRK_DETAILED_USE_MAXIMUM_SIZE }, |
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110 | |||
111 | /* Philips 107p5 CRT */ |
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112 | { "PHL", 57364, EDID_QUIRK_FIRST_DETAILED_PREFERRED }, |
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113 | |||
114 | /* Proview AY765C */ |
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115 | { "PTS", 765, EDID_QUIRK_FIRST_DETAILED_PREFERRED }, |
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116 | |||
117 | /* Samsung SyncMaster 205BW. Note: irony */ |
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118 | { "SAM", 541, EDID_QUIRK_DETAILED_SYNC_PP }, |
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119 | /* Samsung SyncMaster 22[5-6]BW */ |
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120 | { "SAM", 596, EDID_QUIRK_PREFER_LARGE_60 }, |
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121 | { "SAM", 638, EDID_QUIRK_PREFER_LARGE_60 }, |
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122 | }; |
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123 | |||
1963 | serge | 124 | /*** DDC fetch and block validation ***/ |
1123 | serge | 125 | |
1221 | serge | 126 | static const u8 edid_header[] = { |
127 | 0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00 |
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128 | }; |
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1123 | serge | 129 | |
1963 | serge | 130 | /* |
131 | * Sanity check the EDID block (base or extension). Return 0 if the block |
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132 | * doesn't check out, or 1 if it's valid. |
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1123 | serge | 133 | */ |
1963 | serge | 134 | static bool |
135 | drm_edid_block_valid(u8 *raw_edid) |
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1123 | serge | 136 | { |
1963 | serge | 137 | int i; |
1123 | serge | 138 | u8 csum = 0; |
1963 | serge | 139 | struct edid *edid = (struct edid *)raw_edid; |
1123 | serge | 140 | |
1963 | serge | 141 | if (raw_edid[0] == 0x00) { |
142 | int score = 0; |
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143 | |||
1321 | serge | 144 | for (i = 0; i < sizeof(edid_header); i++) |
145 | if (raw_edid[i] == edid_header[i]) |
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146 | score++; |
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147 | |||
148 | if (score == 8) ; |
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149 | else if (score >= 6) { |
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150 | DRM_DEBUG("Fixing EDID header, your hardware may be failing\n"); |
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151 | memcpy(raw_edid, edid_header, sizeof(edid_header)); |
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1963 | serge | 152 | } else { |
1123 | serge | 153 | goto bad; |
1963 | serge | 154 | } |
155 | } |
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1123 | serge | 156 | |
157 | for (i = 0; i < EDID_LENGTH; i++) |
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158 | csum += raw_edid[i]; |
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159 | if (csum) { |
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160 | DRM_ERROR("EDID checksum is invalid, remainder is %d\n", csum); |
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1963 | serge | 161 | |
162 | /* allow CEA to slide through, switches mangle this */ |
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163 | if (raw_edid[0] != 0x02) |
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1123 | serge | 164 | goto bad; |
165 | } |
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166 | |||
1963 | serge | 167 | /* per-block-type checks */ |
168 | switch (raw_edid[0]) { |
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169 | case 0: /* base */ |
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1321 | serge | 170 | if (edid->version != 1) { |
171 | DRM_ERROR("EDID has major version %d, instead of 1\n", edid->version); |
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172 | goto bad; |
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173 | } |
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174 | |||
175 | if (edid->revision > 4) |
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176 | DRM_DEBUG("EDID minor > 4, assuming backward compatibility\n"); |
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1963 | serge | 177 | break; |
1321 | serge | 178 | |
1963 | serge | 179 | default: |
180 | break; |
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181 | } |
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182 | |||
1123 | serge | 183 | return 1; |
184 | |||
185 | bad: |
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186 | if (raw_edid) { |
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2004 | serge | 187 | printk(KERN_ERR "Raw EDID:\n"); |
1123 | serge | 188 | // print_hex_dump_bytes(KERN_ERR, DUMP_PREFIX_NONE, raw_edid, EDID_LENGTH); |
2004 | serge | 189 | printk(KERN_ERR "\n"); |
1123 | serge | 190 | } |
191 | return 0; |
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192 | } |
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1963 | serge | 193 | |
194 | /** |
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195 | * drm_edid_is_valid - sanity check EDID data |
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196 | * @edid: EDID data |
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197 | * |
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198 | * Sanity-check an entire EDID record (including extensions) |
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199 | */ |
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200 | bool drm_edid_is_valid(struct edid *edid) |
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201 | { |
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202 | int i; |
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203 | u8 *raw = (u8 *)edid; |
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204 | |||
205 | if (!edid) |
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206 | return false; |
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207 | |||
208 | for (i = 0; i <= edid->extensions; i++) |
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209 | if (!drm_edid_block_valid(raw + i * EDID_LENGTH)) |
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210 | return false; |
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211 | |||
212 | return true; |
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213 | } |
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1430 | serge | 214 | EXPORT_SYMBOL(drm_edid_is_valid); |
1123 | serge | 215 | |
1963 | serge | 216 | #define DDC_ADDR 0x50 |
217 | #define DDC_SEGMENT_ADDR 0x30 |
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1123 | serge | 218 | /** |
1963 | serge | 219 | * Get EDID information via I2C. |
220 | * |
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221 | * \param adapter : i2c device adaptor |
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222 | * \param buf : EDID data buffer to be filled |
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223 | * \param len : EDID data buffer length |
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224 | * \return 0 on success or -1 on failure. |
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225 | * |
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226 | * Try to fetch EDID information by calling i2c driver function. |
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227 | */ |
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228 | static int |
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229 | drm_do_probe_ddc_edid(struct i2c_adapter *adapter, unsigned char *buf, |
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230 | int block, int len) |
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231 | { |
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232 | unsigned char start = block * EDID_LENGTH; |
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233 | int ret, retries = 5; |
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234 | |||
235 | /* The core i2c driver will automatically retry the transfer if the |
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236 | * adapter reports EAGAIN. However, we find that bit-banging transfers |
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237 | * are susceptible to errors under a heavily loaded machine and |
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238 | * generate spurious NAKs and timeouts. Retrying the transfer |
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239 | * of the individual block a few times seems to overcome this. |
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240 | */ |
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241 | do { |
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242 | struct i2c_msg msgs[] = { |
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243 | { |
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244 | .addr = DDC_ADDR, |
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245 | .flags = 0, |
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246 | .len = 1, |
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247 | .buf = &start, |
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248 | }, { |
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249 | .addr = DDC_ADDR, |
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250 | .flags = I2C_M_RD, |
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251 | .len = len, |
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252 | .buf = buf, |
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253 | } |
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254 | }; |
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255 | ret = i2c_transfer(adapter, msgs, 2); |
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256 | } while (ret != 2 && --retries); |
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257 | |||
258 | return ret == 2 ? 0 : -1; |
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259 | } |
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260 | |||
2004 | serge | 261 | static bool drm_edid_is_zero(u8 *in_edid, int length) |
262 | { |
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263 | int i; |
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264 | u32 *raw_edid = (u32 *)in_edid; |
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265 | |||
266 | for (i = 0; i < length / 4; i++) |
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267 | if (*(raw_edid + i) != 0) |
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268 | return false; |
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269 | return true; |
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270 | } |
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271 | |||
1963 | serge | 272 | static u8 * |
273 | drm_do_get_edid(struct drm_connector *connector, struct i2c_adapter *adapter) |
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274 | { |
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275 | int i, j = 0, valid_extensions = 0; |
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276 | u8 *block, *new; |
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277 | size_t alloc_size; |
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278 | |||
279 | if ((block = kmalloc(EDID_LENGTH, GFP_KERNEL)) == NULL) |
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280 | return NULL; |
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281 | |||
282 | /* base block fetch */ |
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283 | for (i = 0; i < 4; i++) { |
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284 | if (drm_do_probe_ddc_edid(adapter, block, 0, EDID_LENGTH)) |
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285 | goto out; |
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286 | if (drm_edid_block_valid(block)) |
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287 | break; |
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2004 | serge | 288 | if (i == 0 && drm_edid_is_zero(block, EDID_LENGTH)) { |
289 | connector->null_edid_counter++; |
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290 | goto carp; |
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291 | } |
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1963 | serge | 292 | } |
293 | if (i == 4) |
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294 | goto carp; |
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295 | |||
296 | /* if there's no extensions, we're done */ |
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297 | if (block[0x7e] == 0) |
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298 | return block; |
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299 | |||
300 | alloc_size = (block[0x7e] + 1) * EDID_LENGTH ; |
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301 | |||
302 | new = kmalloc(alloc_size, GFP_KERNEL); |
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303 | |||
304 | if (!new) |
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305 | goto out; |
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306 | |||
307 | memcpy(new, block, EDID_LENGTH); |
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308 | kfree(block); |
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309 | |||
310 | block = new; |
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311 | |||
312 | for (j = 1; j <= block[0x7e]; j++) { |
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313 | for (i = 0; i < 4; i++) { |
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314 | if (drm_do_probe_ddc_edid(adapter, |
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315 | block + (valid_extensions + 1) * EDID_LENGTH, |
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316 | j, EDID_LENGTH)) |
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317 | goto out; |
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318 | if (drm_edid_block_valid(block + (valid_extensions + 1) * EDID_LENGTH)) { |
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319 | valid_extensions++; |
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320 | break; |
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321 | } |
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322 | } |
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323 | if (i == 4) |
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324 | dev_warn(connector->dev->dev, |
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325 | "%s: Ignoring invalid EDID block %d.\n", |
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326 | drm_get_connector_name(connector), j); |
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327 | } |
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328 | |||
329 | if (valid_extensions != block[0x7e]) { |
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330 | block[EDID_LENGTH-1] += block[0x7e] - valid_extensions; |
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331 | block[0x7e] = valid_extensions; |
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332 | new = kmalloc((valid_extensions + 1) * EDID_LENGTH, GFP_KERNEL); |
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333 | if (!new) |
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334 | goto out; |
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335 | memcpy(new, block, alloc_size); |
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336 | kfree(block); |
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337 | block = new; |
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338 | } |
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339 | |||
340 | return block; |
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341 | |||
342 | carp: |
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343 | dev_warn(connector->dev->dev, "%s: EDID block %d invalid.\n", |
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344 | drm_get_connector_name(connector), j); |
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345 | |||
346 | out: |
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347 | kfree(block); |
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348 | return NULL; |
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349 | } |
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350 | |||
351 | /** |
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352 | * Probe DDC presence. |
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353 | * |
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354 | * \param adapter : i2c device adaptor |
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355 | * \return 1 on success |
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356 | */ |
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357 | static bool |
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358 | drm_probe_ddc(struct i2c_adapter *adapter) |
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359 | { |
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360 | unsigned char out; |
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361 | |||
362 | return (drm_do_probe_ddc_edid(adapter, &out, 0, 1) == 0); |
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363 | } |
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364 | |||
365 | /** |
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366 | * drm_get_edid - get EDID data, if available |
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367 | * @connector: connector we're probing |
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368 | * @adapter: i2c adapter to use for DDC |
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369 | * |
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370 | * Poke the given i2c channel to grab EDID data if possible. If found, |
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371 | * attach it to the connector. |
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372 | * |
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373 | * Return edid data or NULL if we couldn't find any. |
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374 | */ |
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375 | struct edid *drm_get_edid(struct drm_connector *connector, |
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376 | struct i2c_adapter *adapter) |
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377 | { |
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378 | struct edid *edid = NULL; |
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379 | |||
380 | if (drm_probe_ddc(adapter)) |
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381 | edid = (struct edid *)drm_do_get_edid(connector, adapter); |
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382 | |||
383 | connector->display_info.raw_edid = (char *)edid; |
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384 | |||
385 | return edid; |
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386 | |||
387 | } |
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388 | EXPORT_SYMBOL(drm_get_edid); |
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389 | |||
390 | /*** EDID parsing ***/ |
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391 | |||
392 | /** |
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1123 | serge | 393 | * edid_vendor - match a string against EDID's obfuscated vendor field |
394 | * @edid: EDID to match |
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395 | * @vendor: vendor string |
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396 | * |
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397 | * Returns true if @vendor is in @edid, false otherwise |
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398 | */ |
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399 | static bool edid_vendor(struct edid *edid, char *vendor) |
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400 | { |
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401 | char edid_vendor[3]; |
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402 | |||
403 | edid_vendor[0] = ((edid->mfg_id[0] & 0x7c) >> 2) + '@'; |
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404 | edid_vendor[1] = (((edid->mfg_id[0] & 0x3) << 3) | |
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405 | ((edid->mfg_id[1] & 0xe0) >> 5)) + '@'; |
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406 | edid_vendor[2] = (edid->mfg_id[1] & 0x1f) + '@'; |
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407 | |||
408 | return !strncmp(edid_vendor, vendor, 3); |
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409 | } |
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410 | |||
411 | /** |
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412 | * edid_get_quirks - return quirk flags for a given EDID |
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413 | * @edid: EDID to process |
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414 | * |
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415 | * This tells subsequent routines what fixes they need to apply. |
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416 | */ |
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417 | static u32 edid_get_quirks(struct edid *edid) |
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418 | { |
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419 | struct edid_quirk *quirk; |
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420 | int i; |
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421 | |||
422 | for (i = 0; i < ARRAY_SIZE(edid_quirk_list); i++) { |
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423 | quirk = &edid_quirk_list[i]; |
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424 | |||
425 | if (edid_vendor(edid, quirk->vendor) && |
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426 | (EDID_PRODUCT_ID(edid) == quirk->product_id)) |
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427 | return quirk->quirks; |
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428 | } |
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429 | |||
430 | return 0; |
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431 | } |
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432 | |||
433 | #define MODE_SIZE(m) ((m)->hdisplay * (m)->vdisplay) |
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434 | #define MODE_REFRESH_DIFF(m,r) (abs((m)->vrefresh - target_refresh)) |
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435 | |||
436 | /** |
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437 | * edid_fixup_preferred - set preferred modes based on quirk list |
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438 | * @connector: has mode list to fix up |
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439 | * @quirks: quirks list |
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440 | * |
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441 | * Walk the mode list for @connector, clearing the preferred status |
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442 | * on existing modes and setting it anew for the right mode ala @quirks. |
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443 | */ |
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444 | static void edid_fixup_preferred(struct drm_connector *connector, |
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445 | u32 quirks) |
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446 | { |
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447 | struct drm_display_mode *t, *cur_mode, *preferred_mode; |
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448 | int target_refresh = 0; |
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449 | |||
450 | if (list_empty(&connector->probed_modes)) |
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451 | return; |
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452 | |||
453 | if (quirks & EDID_QUIRK_PREFER_LARGE_60) |
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454 | target_refresh = 60; |
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455 | if (quirks & EDID_QUIRK_PREFER_LARGE_75) |
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456 | target_refresh = 75; |
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457 | |||
458 | preferred_mode = list_first_entry(&connector->probed_modes, |
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459 | struct drm_display_mode, head); |
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460 | |||
461 | list_for_each_entry_safe(cur_mode, t, &connector->probed_modes, head) { |
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462 | cur_mode->type &= ~DRM_MODE_TYPE_PREFERRED; |
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463 | |||
464 | if (cur_mode == preferred_mode) |
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465 | continue; |
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466 | |||
467 | /* Largest mode is preferred */ |
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468 | if (MODE_SIZE(cur_mode) > MODE_SIZE(preferred_mode)) |
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469 | preferred_mode = cur_mode; |
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470 | |||
471 | /* At a given size, try to get closest to target refresh */ |
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472 | if ((MODE_SIZE(cur_mode) == MODE_SIZE(preferred_mode)) && |
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473 | MODE_REFRESH_DIFF(cur_mode, target_refresh) < |
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474 | MODE_REFRESH_DIFF(preferred_mode, target_refresh)) { |
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475 | preferred_mode = cur_mode; |
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476 | } |
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477 | } |
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478 | |||
479 | preferred_mode->type |= DRM_MODE_TYPE_PREFERRED; |
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480 | } |
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481 | |||
1963 | serge | 482 | struct drm_display_mode *drm_mode_find_dmt(struct drm_device *dev, |
1179 | serge | 483 | int hsize, int vsize, int fresh) |
484 | { |
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1963 | serge | 485 | struct drm_display_mode *mode = NULL; |
1321 | serge | 486 | int i; |
1179 | serge | 487 | |
1321 | serge | 488 | for (i = 0; i < drm_num_dmt_modes; i++) { |
1963 | serge | 489 | const struct drm_display_mode *ptr = &drm_dmt_modes[i]; |
1179 | serge | 490 | if (hsize == ptr->hdisplay && |
491 | vsize == ptr->vdisplay && |
||
492 | fresh == drm_mode_vrefresh(ptr)) { |
||
493 | /* get the expected default mode */ |
||
494 | mode = drm_mode_duplicate(dev, ptr); |
||
495 | break; |
||
496 | } |
||
497 | } |
||
498 | return mode; |
||
499 | } |
||
1963 | serge | 500 | EXPORT_SYMBOL(drm_mode_find_dmt); |
1221 | serge | 501 | |
1963 | serge | 502 | typedef void detailed_cb(struct detailed_timing *timing, void *closure); |
503 | |||
504 | static void |
||
505 | cea_for_each_detailed_block(u8 *ext, detailed_cb *cb, void *closure) |
||
506 | { |
||
507 | int i, n = 0; |
||
508 | u8 rev = ext[0x01], d = ext[0x02]; |
||
509 | u8 *det_base = ext + d; |
||
510 | |||
511 | switch (rev) { |
||
512 | case 0: |
||
513 | /* can't happen */ |
||
514 | return; |
||
515 | case 1: |
||
516 | /* have to infer how many blocks we have, check pixel clock */ |
||
517 | for (i = 0; i < 6; i++) |
||
518 | if (det_base[18*i] || det_base[18*i+1]) |
||
519 | n++; |
||
520 | break; |
||
521 | default: |
||
522 | /* explicit count */ |
||
523 | n = min(ext[0x03] & 0x0f, 6); |
||
524 | break; |
||
525 | } |
||
526 | |||
527 | for (i = 0; i < n; i++) |
||
528 | cb((struct detailed_timing *)(det_base + 18 * i), closure); |
||
529 | } |
||
530 | |||
531 | static void |
||
532 | vtb_for_each_detailed_block(u8 *ext, detailed_cb *cb, void *closure) |
||
533 | { |
||
534 | unsigned int i, n = min((int)ext[0x02], 6); |
||
535 | u8 *det_base = ext + 5; |
||
536 | |||
537 | if (ext[0x01] != 1) |
||
538 | return; /* unknown version */ |
||
539 | |||
540 | for (i = 0; i < n; i++) |
||
541 | cb((struct detailed_timing *)(det_base + 18 * i), closure); |
||
542 | } |
||
543 | |||
544 | static void |
||
545 | drm_for_each_detailed_block(u8 *raw_edid, detailed_cb *cb, void *closure) |
||
546 | { |
||
547 | int i; |
||
548 | struct edid *edid = (struct edid *)raw_edid; |
||
549 | |||
550 | if (edid == NULL) |
||
551 | return; |
||
552 | |||
553 | for (i = 0; i < EDID_DETAILED_TIMINGS; i++) |
||
554 | cb(&(edid->detailed_timings[i]), closure); |
||
555 | |||
556 | for (i = 1; i <= raw_edid[0x7e]; i++) { |
||
557 | u8 *ext = raw_edid + (i * EDID_LENGTH); |
||
558 | switch (*ext) { |
||
559 | case CEA_EXT: |
||
560 | cea_for_each_detailed_block(ext, cb, closure); |
||
561 | break; |
||
562 | case VTB_EXT: |
||
563 | vtb_for_each_detailed_block(ext, cb, closure); |
||
564 | break; |
||
565 | default: |
||
566 | break; |
||
567 | } |
||
568 | } |
||
569 | } |
||
570 | |||
571 | static void |
||
572 | is_rb(struct detailed_timing *t, void *data) |
||
573 | { |
||
574 | u8 *r = (u8 *)t; |
||
575 | if (r[3] == EDID_DETAIL_MONITOR_RANGE) |
||
576 | if (r[15] & 0x10) |
||
577 | *(bool *)data = true; |
||
578 | } |
||
579 | |||
580 | /* EDID 1.4 defines this explicitly. For EDID 1.3, we guess, badly. */ |
||
581 | static bool |
||
582 | drm_monitor_supports_rb(struct edid *edid) |
||
583 | { |
||
584 | if (edid->revision >= 4) { |
||
585 | bool ret; |
||
586 | drm_for_each_detailed_block((u8 *)edid, is_rb, &ret); |
||
587 | return ret; |
||
588 | } |
||
589 | |||
590 | return ((edid->input & DRM_EDID_INPUT_DIGITAL) != 0); |
||
591 | } |
||
592 | |||
593 | static void |
||
594 | find_gtf2(struct detailed_timing *t, void *data) |
||
595 | { |
||
596 | u8 *r = (u8 *)t; |
||
597 | if (r[3] == EDID_DETAIL_MONITOR_RANGE && r[10] == 0x02) |
||
598 | *(u8 **)data = r; |
||
599 | } |
||
600 | |||
601 | /* Secondary GTF curve kicks in above some break frequency */ |
||
602 | static int |
||
603 | drm_gtf2_hbreak(struct edid *edid) |
||
604 | { |
||
605 | u8 *r = NULL; |
||
606 | drm_for_each_detailed_block((u8 *)edid, find_gtf2, &r); |
||
607 | return r ? (r[12] * 2) : 0; |
||
608 | } |
||
609 | |||
610 | static int |
||
611 | drm_gtf2_2c(struct edid *edid) |
||
612 | { |
||
613 | u8 *r = NULL; |
||
614 | drm_for_each_detailed_block((u8 *)edid, find_gtf2, &r); |
||
615 | return r ? r[13] : 0; |
||
616 | } |
||
617 | |||
618 | static int |
||
619 | drm_gtf2_m(struct edid *edid) |
||
620 | { |
||
621 | u8 *r = NULL; |
||
622 | drm_for_each_detailed_block((u8 *)edid, find_gtf2, &r); |
||
623 | return r ? (r[15] << 8) + r[14] : 0; |
||
624 | } |
||
625 | |||
626 | static int |
||
627 | drm_gtf2_k(struct edid *edid) |
||
628 | { |
||
629 | u8 *r = NULL; |
||
630 | drm_for_each_detailed_block((u8 *)edid, find_gtf2, &r); |
||
631 | return r ? r[16] : 0; |
||
632 | } |
||
633 | |||
634 | static int |
||
635 | drm_gtf2_2j(struct edid *edid) |
||
636 | { |
||
637 | u8 *r = NULL; |
||
638 | drm_for_each_detailed_block((u8 *)edid, find_gtf2, &r); |
||
639 | return r ? r[17] : 0; |
||
640 | } |
||
641 | |||
642 | /** |
||
643 | * standard_timing_level - get std. timing level(CVT/GTF/DMT) |
||
644 | * @edid: EDID block to scan |
||
645 | */ |
||
646 | static int standard_timing_level(struct edid *edid) |
||
647 | { |
||
648 | if (edid->revision >= 2) { |
||
649 | if (edid->revision >= 4 && (edid->features & DRM_EDID_FEATURE_DEFAULT_GTF)) |
||
650 | return LEVEL_CVT; |
||
651 | if (drm_gtf2_hbreak(edid)) |
||
652 | return LEVEL_GTF2; |
||
653 | return LEVEL_GTF; |
||
654 | } |
||
655 | return LEVEL_DMT; |
||
656 | } |
||
657 | |||
1221 | serge | 658 | /* |
659 | * 0 is reserved. The spec says 0x01 fill for unused timings. Some old |
||
660 | * monitors fill with ascii space (0x20) instead. |
||
661 | */ |
||
662 | static int |
||
663 | bad_std_timing(u8 a, u8 b) |
||
664 | { |
||
665 | return (a == 0x00 && b == 0x00) || |
||
666 | (a == 0x01 && b == 0x01) || |
||
667 | (a == 0x20 && b == 0x20); |
||
668 | } |
||
669 | |||
1123 | serge | 670 | /** |
671 | * drm_mode_std - convert standard mode info (width, height, refresh) into mode |
||
672 | * @t: standard timing params |
||
1221 | serge | 673 | * @timing_level: standard timing level |
1123 | serge | 674 | * |
675 | * Take the standard timing params (in this case width, aspect, and refresh) |
||
1221 | serge | 676 | * and convert them into a real mode using CVT/GTF/DMT. |
1123 | serge | 677 | */ |
1963 | serge | 678 | static struct drm_display_mode * |
679 | drm_mode_std(struct drm_connector *connector, struct edid *edid, |
||
680 | struct std_timing *t, int revision) |
||
1123 | serge | 681 | { |
1963 | serge | 682 | struct drm_device *dev = connector->dev; |
683 | struct drm_display_mode *m, *mode = NULL; |
||
1179 | serge | 684 | int hsize, vsize; |
685 | int vrefresh_rate; |
||
1123 | serge | 686 | unsigned aspect_ratio = (t->vfreq_aspect & EDID_TIMING_ASPECT_MASK) |
687 | >> EDID_TIMING_ASPECT_SHIFT; |
||
1179 | serge | 688 | unsigned vfreq = (t->vfreq_aspect & EDID_TIMING_VFREQ_MASK) |
689 | >> EDID_TIMING_VFREQ_SHIFT; |
||
1963 | serge | 690 | int timing_level = standard_timing_level(edid); |
1123 | serge | 691 | |
1221 | serge | 692 | if (bad_std_timing(t->hsize, t->vfreq_aspect)) |
693 | return NULL; |
||
694 | |||
1179 | serge | 695 | /* According to the EDID spec, the hdisplay = hsize * 8 + 248 */ |
696 | hsize = t->hsize * 8 + 248; |
||
697 | /* vrefresh_rate = vfreq + 60 */ |
||
698 | vrefresh_rate = vfreq + 60; |
||
699 | /* the vdisplay is calculated based on the aspect ratio */ |
||
1221 | serge | 700 | if (aspect_ratio == 0) { |
701 | if (revision < 3) |
||
702 | vsize = hsize; |
||
703 | else |
||
1123 | serge | 704 | vsize = (hsize * 10) / 16; |
1221 | serge | 705 | } else if (aspect_ratio == 1) |
1123 | serge | 706 | vsize = (hsize * 3) / 4; |
707 | else if (aspect_ratio == 2) |
||
708 | vsize = (hsize * 4) / 5; |
||
709 | else |
||
710 | vsize = (hsize * 9) / 16; |
||
1963 | serge | 711 | |
712 | /* HDTV hack, part 1 */ |
||
713 | if (vrefresh_rate == 60 && |
||
714 | ((hsize == 1360 && vsize == 765) || |
||
715 | (hsize == 1368 && vsize == 769))) { |
||
716 | hsize = 1366; |
||
717 | vsize = 768; |
||
718 | } |
||
719 | |||
720 | /* |
||
721 | * If this connector already has a mode for this size and refresh |
||
722 | * rate (because it came from detailed or CVT info), use that |
||
723 | * instead. This way we don't have to guess at interlace or |
||
724 | * reduced blanking. |
||
725 | */ |
||
726 | list_for_each_entry(m, &connector->probed_modes, head) |
||
727 | if (m->hdisplay == hsize && m->vdisplay == vsize && |
||
728 | drm_mode_vrefresh(m) == vrefresh_rate) |
||
729 | return NULL; |
||
730 | |||
731 | /* HDTV hack, part 2 */ |
||
732 | if (hsize == 1366 && vsize == 768 && vrefresh_rate == 60) { |
||
733 | mode = drm_cvt_mode(dev, 1366, 768, vrefresh_rate, 0, 0, |
||
1221 | serge | 734 | false); |
1179 | serge | 735 | mode->hdisplay = 1366; |
1963 | serge | 736 | mode->hsync_start = mode->hsync_start - 1; |
737 | mode->hsync_end = mode->hsync_end - 1; |
||
1179 | serge | 738 | return mode; |
739 | } |
||
1963 | serge | 740 | |
1179 | serge | 741 | /* check whether it can be found in default mode table */ |
1963 | serge | 742 | mode = drm_mode_find_dmt(dev, hsize, vsize, vrefresh_rate); |
1179 | serge | 743 | if (mode) |
744 | return mode; |
||
1123 | serge | 745 | |
1179 | serge | 746 | switch (timing_level) { |
747 | case LEVEL_DMT: |
||
748 | break; |
||
749 | case LEVEL_GTF: |
||
750 | mode = drm_gtf_mode(dev, hsize, vsize, vrefresh_rate, 0, 0); |
||
751 | break; |
||
1963 | serge | 752 | case LEVEL_GTF2: |
753 | /* |
||
754 | * This is potentially wrong if there's ever a monitor with |
||
755 | * more than one ranges section, each claiming a different |
||
756 | * secondary GTF curve. Please don't do that. |
||
757 | */ |
||
758 | mode = drm_gtf_mode(dev, hsize, vsize, vrefresh_rate, 0, 0); |
||
759 | if (drm_mode_hsync(mode) > drm_gtf2_hbreak(edid)) { |
||
760 | kfree(mode); |
||
761 | mode = drm_gtf_mode_complex(dev, hsize, vsize, |
||
762 | vrefresh_rate, 0, 0, |
||
763 | drm_gtf2_m(edid), |
||
764 | drm_gtf2_2c(edid), |
||
765 | drm_gtf2_k(edid), |
||
766 | drm_gtf2_2j(edid)); |
||
767 | } |
||
768 | break; |
||
1179 | serge | 769 | case LEVEL_CVT: |
1221 | serge | 770 | mode = drm_cvt_mode(dev, hsize, vsize, vrefresh_rate, 0, 0, |
771 | false); |
||
1179 | serge | 772 | break; |
773 | } |
||
1123 | serge | 774 | return mode; |
775 | } |
||
776 | |||
1428 | serge | 777 | /* |
778 | * EDID is delightfully ambiguous about how interlaced modes are to be |
||
779 | * encoded. Our internal representation is of frame height, but some |
||
780 | * HDTV detailed timings are encoded as field height. |
||
781 | * |
||
782 | * The format list here is from CEA, in frame size. Technically we |
||
783 | * should be checking refresh rate too. Whatever. |
||
784 | */ |
||
785 | static void |
||
786 | drm_mode_do_interlace_quirk(struct drm_display_mode *mode, |
||
787 | struct detailed_pixel_timing *pt) |
||
788 | { |
||
789 | int i; |
||
790 | static const struct { |
||
791 | int w, h; |
||
792 | } cea_interlaced[] = { |
||
793 | { 1920, 1080 }, |
||
794 | { 720, 480 }, |
||
795 | { 1440, 480 }, |
||
796 | { 2880, 480 }, |
||
797 | { 720, 576 }, |
||
798 | { 1440, 576 }, |
||
799 | { 2880, 576 }, |
||
800 | }; |
||
801 | |||
802 | if (!(pt->misc & DRM_EDID_PT_INTERLACED)) |
||
803 | return; |
||
804 | |||
1963 | serge | 805 | for (i = 0; i < ARRAY_SIZE(cea_interlaced); i++) { |
1428 | serge | 806 | if ((mode->hdisplay == cea_interlaced[i].w) && |
807 | (mode->vdisplay == cea_interlaced[i].h / 2)) { |
||
808 | mode->vdisplay *= 2; |
||
809 | mode->vsync_start *= 2; |
||
810 | mode->vsync_end *= 2; |
||
811 | mode->vtotal *= 2; |
||
812 | mode->vtotal |= 1; |
||
813 | } |
||
814 | } |
||
815 | |||
816 | mode->flags |= DRM_MODE_FLAG_INTERLACE; |
||
817 | } |
||
818 | |||
1123 | serge | 819 | /** |
820 | * drm_mode_detailed - create a new mode from an EDID detailed timing section |
||
821 | * @dev: DRM device (needed to create new mode) |
||
822 | * @edid: EDID block |
||
823 | * @timing: EDID detailed timing info |
||
824 | * @quirks: quirks to apply |
||
825 | * |
||
826 | * An EDID detailed timing block contains enough info for us to create and |
||
827 | * return a new struct drm_display_mode. |
||
828 | */ |
||
829 | static struct drm_display_mode *drm_mode_detailed(struct drm_device *dev, |
||
830 | struct edid *edid, |
||
831 | struct detailed_timing *timing, |
||
832 | u32 quirks) |
||
833 | { |
||
834 | struct drm_display_mode *mode; |
||
835 | struct detailed_pixel_timing *pt = &timing->data.pixel_data; |
||
836 | unsigned hactive = (pt->hactive_hblank_hi & 0xf0) << 4 | pt->hactive_lo; |
||
837 | unsigned vactive = (pt->vactive_vblank_hi & 0xf0) << 4 | pt->vactive_lo; |
||
838 | unsigned hblank = (pt->hactive_hblank_hi & 0xf) << 8 | pt->hblank_lo; |
||
839 | unsigned vblank = (pt->vactive_vblank_hi & 0xf) << 8 | pt->vblank_lo; |
||
840 | unsigned hsync_offset = (pt->hsync_vsync_offset_pulse_width_hi & 0xc0) << 2 | pt->hsync_offset_lo; |
||
841 | unsigned hsync_pulse_width = (pt->hsync_vsync_offset_pulse_width_hi & 0x30) << 4 | pt->hsync_pulse_width_lo; |
||
842 | unsigned vsync_offset = (pt->hsync_vsync_offset_pulse_width_hi & 0xc) >> 2 | pt->vsync_offset_pulse_width_lo >> 4; |
||
843 | unsigned vsync_pulse_width = (pt->hsync_vsync_offset_pulse_width_hi & 0x3) << 4 | (pt->vsync_offset_pulse_width_lo & 0xf); |
||
844 | |||
845 | /* ignore tiny modes */ |
||
846 | if (hactive < 64 || vactive < 64) |
||
847 | return NULL; |
||
848 | |||
849 | if (pt->misc & DRM_EDID_PT_STEREO) { |
||
850 | printk(KERN_WARNING "stereo mode not supported\n"); |
||
851 | return NULL; |
||
852 | } |
||
853 | if (!(pt->misc & DRM_EDID_PT_SEPARATE_SYNC)) { |
||
1404 | serge | 854 | printk(KERN_WARNING "composite sync not supported\n"); |
1123 | serge | 855 | } |
856 | |||
1246 | serge | 857 | /* it is incorrect if hsync/vsync width is zero */ |
858 | if (!hsync_pulse_width || !vsync_pulse_width) { |
||
859 | DRM_DEBUG_KMS("Incorrect Detailed timing. " |
||
860 | "Wrong Hsync/Vsync pulse width\n"); |
||
861 | return NULL; |
||
862 | } |
||
1123 | serge | 863 | mode = drm_mode_create(dev); |
864 | if (!mode) |
||
865 | return NULL; |
||
866 | |||
867 | mode->type = DRM_MODE_TYPE_DRIVER; |
||
868 | |||
869 | if (quirks & EDID_QUIRK_135_CLOCK_TOO_HIGH) |
||
870 | timing->pixel_clock = cpu_to_le16(1088); |
||
871 | |||
872 | mode->clock = le16_to_cpu(timing->pixel_clock) * 10; |
||
873 | |||
874 | mode->hdisplay = hactive; |
||
875 | mode->hsync_start = mode->hdisplay + hsync_offset; |
||
876 | mode->hsync_end = mode->hsync_start + hsync_pulse_width; |
||
877 | mode->htotal = mode->hdisplay + hblank; |
||
878 | |||
879 | mode->vdisplay = vactive; |
||
880 | mode->vsync_start = mode->vdisplay + vsync_offset; |
||
881 | mode->vsync_end = mode->vsync_start + vsync_pulse_width; |
||
882 | mode->vtotal = mode->vdisplay + vblank; |
||
883 | |||
1313 | serge | 884 | /* Some EDIDs have bogus h/vtotal values */ |
885 | if (mode->hsync_end > mode->htotal) |
||
886 | mode->htotal = mode->hsync_end + 1; |
||
887 | if (mode->vsync_end > mode->vtotal) |
||
888 | mode->vtotal = mode->vsync_end + 1; |
||
889 | |||
1963 | serge | 890 | drm_mode_do_interlace_quirk(mode, pt); |
891 | |||
1123 | serge | 892 | drm_mode_set_name(mode); |
893 | |||
894 | if (quirks & EDID_QUIRK_DETAILED_SYNC_PP) { |
||
895 | pt->misc |= DRM_EDID_PT_HSYNC_POSITIVE | DRM_EDID_PT_VSYNC_POSITIVE; |
||
896 | } |
||
897 | |||
898 | mode->flags |= (pt->misc & DRM_EDID_PT_HSYNC_POSITIVE) ? |
||
899 | DRM_MODE_FLAG_PHSYNC : DRM_MODE_FLAG_NHSYNC; |
||
900 | mode->flags |= (pt->misc & DRM_EDID_PT_VSYNC_POSITIVE) ? |
||
901 | DRM_MODE_FLAG_PVSYNC : DRM_MODE_FLAG_NVSYNC; |
||
902 | |||
903 | mode->width_mm = pt->width_mm_lo | (pt->width_height_mm_hi & 0xf0) << 4; |
||
904 | mode->height_mm = pt->height_mm_lo | (pt->width_height_mm_hi & 0xf) << 8; |
||
905 | |||
906 | if (quirks & EDID_QUIRK_DETAILED_IN_CM) { |
||
907 | mode->width_mm *= 10; |
||
908 | mode->height_mm *= 10; |
||
909 | } |
||
910 | |||
911 | if (quirks & EDID_QUIRK_DETAILED_USE_MAXIMUM_SIZE) { |
||
912 | mode->width_mm = edid->width_cm * 10; |
||
913 | mode->height_mm = edid->height_cm * 10; |
||
914 | } |
||
915 | |||
916 | return mode; |
||
917 | } |
||
918 | |||
1963 | serge | 919 | static bool |
920 | mode_is_rb(const struct drm_display_mode *mode) |
||
921 | { |
||
922 | return (mode->htotal - mode->hdisplay == 160) && |
||
923 | (mode->hsync_end - mode->hdisplay == 80) && |
||
924 | (mode->hsync_end - mode->hsync_start == 32) && |
||
925 | (mode->vsync_start - mode->vdisplay == 3); |
||
926 | } |
||
927 | |||
928 | static bool |
||
929 | mode_in_hsync_range(const struct drm_display_mode *mode, |
||
930 | struct edid *edid, u8 *t) |
||
931 | { |
||
932 | int hsync, hmin, hmax; |
||
933 | |||
934 | hmin = t[7]; |
||
935 | if (edid->revision >= 4) |
||
936 | hmin += ((t[4] & 0x04) ? 255 : 0); |
||
937 | hmax = t[8]; |
||
938 | if (edid->revision >= 4) |
||
939 | hmax += ((t[4] & 0x08) ? 255 : 0); |
||
940 | hsync = drm_mode_hsync(mode); |
||
941 | |||
942 | return (hsync <= hmax && hsync >= hmin); |
||
943 | } |
||
944 | |||
945 | static bool |
||
946 | mode_in_vsync_range(const struct drm_display_mode *mode, |
||
947 | struct edid *edid, u8 *t) |
||
948 | { |
||
949 | int vsync, vmin, vmax; |
||
950 | |||
951 | vmin = t[5]; |
||
952 | if (edid->revision >= 4) |
||
953 | vmin += ((t[4] & 0x01) ? 255 : 0); |
||
954 | vmax = t[6]; |
||
955 | if (edid->revision >= 4) |
||
956 | vmax += ((t[4] & 0x02) ? 255 : 0); |
||
957 | vsync = drm_mode_vrefresh(mode); |
||
958 | |||
959 | return (vsync <= vmax && vsync >= vmin); |
||
960 | } |
||
961 | |||
962 | static u32 |
||
963 | range_pixel_clock(struct edid *edid, u8 *t) |
||
964 | { |
||
965 | /* unspecified */ |
||
966 | if (t[9] == 0 || t[9] == 255) |
||
967 | return 0; |
||
968 | |||
969 | /* 1.4 with CVT support gives us real precision, yay */ |
||
970 | if (edid->revision >= 4 && t[10] == 0x04) |
||
971 | return (t[9] * 10000) - ((t[12] >> 2) * 250); |
||
972 | |||
973 | /* 1.3 is pathetic, so fuzz up a bit */ |
||
974 | return t[9] * 10000 + 5001; |
||
975 | } |
||
976 | |||
977 | static bool |
||
978 | mode_in_range(const struct drm_display_mode *mode, struct edid *edid, |
||
979 | struct detailed_timing *timing) |
||
980 | { |
||
981 | u32 max_clock; |
||
982 | u8 *t = (u8 *)timing; |
||
983 | |||
984 | if (!mode_in_hsync_range(mode, edid, t)) |
||
985 | return false; |
||
986 | |||
987 | if (!mode_in_vsync_range(mode, edid, t)) |
||
988 | return false; |
||
989 | |||
990 | if ((max_clock = range_pixel_clock(edid, t))) |
||
991 | if (mode->clock > max_clock) |
||
992 | return false; |
||
993 | |||
994 | /* 1.4 max horizontal check */ |
||
995 | if (edid->revision >= 4 && t[10] == 0x04) |
||
996 | if (t[13] && mode->hdisplay > 8 * (t[13] + (256 * (t[12]&0x3)))) |
||
997 | return false; |
||
998 | |||
999 | if (mode_is_rb(mode) && !drm_monitor_supports_rb(edid)) |
||
1000 | return false; |
||
1001 | |||
1002 | return true; |
||
1003 | } |
||
1004 | |||
1123 | serge | 1005 | /* |
1963 | serge | 1006 | * XXX If drm_dmt_modes ever regrows the CVT-R modes (and it will) this will |
1007 | * need to account for them. |
||
1123 | serge | 1008 | */ |
1963 | serge | 1009 | static int |
1010 | drm_gtf_modes_for_range(struct drm_connector *connector, struct edid *edid, |
||
1011 | struct detailed_timing *timing) |
||
1012 | { |
||
1013 | int i, modes = 0; |
||
1014 | struct drm_display_mode *newmode; |
||
1015 | struct drm_device *dev = connector->dev; |
||
1123 | serge | 1016 | |
1963 | serge | 1017 | for (i = 0; i < drm_num_dmt_modes; i++) { |
1018 | if (mode_in_range(drm_dmt_modes + i, edid, timing)) { |
||
1019 | newmode = drm_mode_duplicate(dev, &drm_dmt_modes[i]); |
||
1020 | if (newmode) { |
||
1021 | drm_mode_probed_add(connector, newmode); |
||
1022 | modes++; |
||
1023 | } |
||
1024 | } |
||
1025 | } |
||
1123 | serge | 1026 | |
1963 | serge | 1027 | return modes; |
1028 | } |
||
1029 | |||
1030 | static void |
||
1031 | do_inferred_modes(struct detailed_timing *timing, void *c) |
||
1032 | { |
||
1033 | struct detailed_mode_closure *closure = c; |
||
1034 | struct detailed_non_pixel *data = &timing->data.other_data; |
||
1035 | int gtf = (closure->edid->features & DRM_EDID_FEATURE_DEFAULT_GTF); |
||
1036 | |||
1037 | if (gtf && data->type == EDID_DETAIL_MONITOR_RANGE) |
||
1038 | closure->modes += drm_gtf_modes_for_range(closure->connector, |
||
1039 | closure->edid, |
||
1040 | timing); |
||
1041 | } |
||
1042 | |||
1043 | static int |
||
1044 | add_inferred_modes(struct drm_connector *connector, struct edid *edid) |
||
1045 | { |
||
1046 | struct detailed_mode_closure closure = { |
||
1047 | connector, edid, 0, 0, 0 |
||
1048 | }; |
||
1049 | |||
1050 | if (version_greater(edid, 1, 0)) |
||
1051 | drm_for_each_detailed_block((u8 *)edid, do_inferred_modes, |
||
1052 | &closure); |
||
1053 | |||
1054 | return closure.modes; |
||
1055 | } |
||
1056 | |||
1057 | static int |
||
1058 | drm_est3_modes(struct drm_connector *connector, struct detailed_timing *timing) |
||
1059 | { |
||
1060 | int i, j, m, modes = 0; |
||
1061 | struct drm_display_mode *mode; |
||
1062 | u8 *est = ((u8 *)timing) + 5; |
||
1063 | |||
1064 | for (i = 0; i < 6; i++) { |
||
1065 | for (j = 7; j > 0; j--) { |
||
1066 | m = (i * 8) + (7 - j); |
||
1067 | if (m >= ARRAY_SIZE(est3_modes)) |
||
1068 | break; |
||
1069 | if (est[i] & (1 << j)) { |
||
1070 | mode = drm_mode_find_dmt(connector->dev, |
||
1071 | est3_modes[m].w, |
||
1072 | est3_modes[m].h, |
||
1073 | est3_modes[m].r |
||
1074 | /*, est3_modes[m].rb */); |
||
1075 | if (mode) { |
||
1076 | drm_mode_probed_add(connector, mode); |
||
1077 | modes++; |
||
1078 | } |
||
1079 | } |
||
1080 | } |
||
1081 | } |
||
1082 | |||
1083 | return modes; |
||
1084 | } |
||
1085 | |||
1086 | static void |
||
1087 | do_established_modes(struct detailed_timing *timing, void *c) |
||
1088 | { |
||
1089 | struct detailed_mode_closure *closure = c; |
||
1090 | struct detailed_non_pixel *data = &timing->data.other_data; |
||
1091 | |||
1092 | if (data->type == EDID_DETAIL_EST_TIMINGS) |
||
1093 | closure->modes += drm_est3_modes(closure->connector, timing); |
||
1094 | } |
||
1095 | |||
1123 | serge | 1096 | /** |
1097 | * add_established_modes - get est. modes from EDID and add them |
||
1098 | * @edid: EDID block to scan |
||
1099 | * |
||
1100 | * Each EDID block contains a bitmap of the supported "established modes" list |
||
1101 | * (defined above). Tease them out and add them to the global modes list. |
||
1102 | */ |
||
1963 | serge | 1103 | static int |
1104 | add_established_modes(struct drm_connector *connector, struct edid *edid) |
||
1123 | serge | 1105 | { |
1106 | struct drm_device *dev = connector->dev; |
||
1107 | unsigned long est_bits = edid->established_timings.t1 | |
||
1108 | (edid->established_timings.t2 << 8) | |
||
1109 | ((edid->established_timings.mfg_rsvd & 0x80) << 9); |
||
1110 | int i, modes = 0; |
||
1963 | serge | 1111 | struct detailed_mode_closure closure = { |
1112 | connector, edid, 0, 0, 0 |
||
1113 | }; |
||
1123 | serge | 1114 | |
1963 | serge | 1115 | for (i = 0; i <= EDID_EST_TIMINGS; i++) { |
1123 | serge | 1116 | if (est_bits & (1< |
1117 | struct drm_display_mode *newmode; |
||
1118 | newmode = drm_mode_duplicate(dev, &edid_est_modes[i]); |
||
1119 | if (newmode) { |
||
1963 | serge | 1120 | drm_mode_probed_add(connector, newmode); |
1123 | serge | 1121 | modes++; |
1122 | } |
||
1123 | } |
||
1963 | serge | 1124 | } |
1123 | serge | 1125 | |
1963 | serge | 1126 | if (version_greater(edid, 1, 0)) |
1127 | drm_for_each_detailed_block((u8 *)edid, |
||
1128 | do_established_modes, &closure); |
||
1129 | |||
1130 | return modes + closure.modes; |
||
1123 | serge | 1131 | } |
1963 | serge | 1132 | |
1133 | static void |
||
1134 | do_standard_modes(struct detailed_timing *timing, void *c) |
||
1179 | serge | 1135 | { |
1963 | serge | 1136 | struct detailed_mode_closure *closure = c; |
1137 | struct detailed_non_pixel *data = &timing->data.other_data; |
||
1138 | struct drm_connector *connector = closure->connector; |
||
1139 | struct edid *edid = closure->edid; |
||
1140 | |||
1141 | if (data->type == EDID_DETAIL_STD_MODES) { |
||
1142 | int i; |
||
1143 | for (i = 0; i < 6; i++) { |
||
1144 | struct std_timing *std; |
||
1145 | struct drm_display_mode *newmode; |
||
1146 | |||
1147 | std = &data->data.timings[i]; |
||
1148 | newmode = drm_mode_std(connector, edid, std, |
||
1149 | edid->revision); |
||
1150 | if (newmode) { |
||
1151 | drm_mode_probed_add(connector, newmode); |
||
1152 | closure->modes++; |
||
1153 | } |
||
1154 | } |
||
1155 | } |
||
1179 | serge | 1156 | } |
1123 | serge | 1157 | |
1158 | /** |
||
1159 | * add_standard_modes - get std. modes from EDID and add them |
||
1160 | * @edid: EDID block to scan |
||
1161 | * |
||
1963 | serge | 1162 | * Standard modes can be calculated using the appropriate standard (DMT, |
1163 | * GTF or CVT. Grab them from @edid and add them to the list. |
||
1123 | serge | 1164 | */ |
1963 | serge | 1165 | static int |
1166 | add_standard_modes(struct drm_connector *connector, struct edid *edid) |
||
1123 | serge | 1167 | { |
1168 | int i, modes = 0; |
||
1963 | serge | 1169 | struct detailed_mode_closure closure = { |
1170 | connector, edid, 0, 0, 0 |
||
1171 | }; |
||
1123 | serge | 1172 | |
1173 | for (i = 0; i < EDID_STD_TIMINGS; i++) { |
||
1174 | struct drm_display_mode *newmode; |
||
1175 | |||
1963 | serge | 1176 | newmode = drm_mode_std(connector, edid, |
1177 | &edid->standard_timings[i], |
||
1178 | edid->revision); |
||
1123 | serge | 1179 | if (newmode) { |
1180 | drm_mode_probed_add(connector, newmode); |
||
1181 | modes++; |
||
1182 | } |
||
1183 | } |
||
1184 | |||
1963 | serge | 1185 | if (version_greater(edid, 1, 0)) |
1186 | drm_for_each_detailed_block((u8 *)edid, do_standard_modes, |
||
1187 | &closure); |
||
1123 | serge | 1188 | |
1963 | serge | 1189 | /* XXX should also look for standard codes in VTB blocks */ |
1321 | serge | 1190 | |
1963 | serge | 1191 | return modes + closure.modes; |
1321 | serge | 1192 | } |
1193 | |||
1194 | static int drm_cvt_modes(struct drm_connector *connector, |
||
1195 | struct detailed_timing *timing) |
||
1196 | { |
||
1123 | serge | 1197 | int i, j, modes = 0; |
1321 | serge | 1198 | struct drm_display_mode *newmode; |
1199 | struct drm_device *dev = connector->dev; |
||
1200 | struct cvt_timing *cvt; |
||
1201 | const int rates[] = { 60, 85, 75, 60, 50 }; |
||
1404 | serge | 1202 | const u8 empty[3] = { 0, 0, 0 }; |
1123 | serge | 1203 | |
1321 | serge | 1204 | for (i = 0; i < 4; i++) { |
1404 | serge | 1205 | int uninitialized_var(width), height; |
1321 | serge | 1206 | cvt = &(timing->data.other_data.data.cvt[i]); |
1179 | serge | 1207 | |
1404 | serge | 1208 | if (!memcmp(cvt->code, empty, 3)) |
1963 | serge | 1209 | continue; |
1404 | serge | 1210 | |
1211 | height = (cvt->code[0] + ((cvt->code[1] & 0xf0) << 4) + 1) * 2; |
||
1212 | switch (cvt->code[1] & 0x0c) { |
||
1321 | serge | 1213 | case 0x00: |
1214 | width = height * 4 / 3; |
||
1215 | break; |
||
1404 | serge | 1216 | case 0x04: |
1321 | serge | 1217 | width = height * 16 / 9; |
1218 | break; |
||
1404 | serge | 1219 | case 0x08: |
1321 | serge | 1220 | width = height * 16 / 10; |
1221 | break; |
||
1404 | serge | 1222 | case 0x0c: |
1321 | serge | 1223 | width = height * 15 / 9; |
1224 | break; |
||
1225 | } |
||
1226 | |||
1227 | for (j = 1; j < 5; j++) { |
||
1228 | if (cvt->code[2] & (1 << j)) { |
||
1229 | newmode = drm_cvt_mode(dev, width, height, |
||
1230 | rates[j], j == 0, |
||
1231 | false, false); |
||
1232 | if (newmode) { |
||
1233 | drm_mode_probed_add(connector, newmode); |
||
1234 | modes++; |
||
1235 | } |
||
1236 | } |
||
1237 | } |
||
1963 | serge | 1238 | } |
1321 | serge | 1239 | |
1240 | return modes; |
||
1241 | } |
||
1242 | |||
1963 | serge | 1243 | static void |
1244 | do_cvt_mode(struct detailed_timing *timing, void *c) |
||
1321 | serge | 1245 | { |
1963 | serge | 1246 | struct detailed_mode_closure *closure = c; |
1247 | struct detailed_non_pixel *data = &timing->data.other_data; |
||
1123 | serge | 1248 | |
1963 | serge | 1249 | if (data->type == EDID_DETAIL_CVT_3BYTE) |
1250 | closure->modes += drm_cvt_modes(closure->connector, timing); |
||
1251 | } |
||
1321 | serge | 1252 | |
1963 | serge | 1253 | static int |
1254 | add_cvt_modes(struct drm_connector *connector, struct edid *edid) |
||
1255 | { |
||
1256 | struct detailed_mode_closure closure = { |
||
1257 | connector, edid, 0, 0, 0 |
||
1258 | }; |
||
1321 | serge | 1259 | |
1963 | serge | 1260 | if (version_greater(edid, 1, 2)) |
1261 | drm_for_each_detailed_block((u8 *)edid, do_cvt_mode, &closure); |
||
1321 | serge | 1262 | |
1963 | serge | 1263 | /* XXX should also look for CVT codes in VTB blocks */ |
1123 | serge | 1264 | |
1963 | serge | 1265 | return closure.modes; |
1321 | serge | 1266 | } |
1267 | |||
1963 | serge | 1268 | static void |
1269 | do_detailed_mode(struct detailed_timing *timing, void *c) |
||
1321 | serge | 1270 | { |
1963 | serge | 1271 | struct detailed_mode_closure *closure = c; |
1272 | struct drm_display_mode *newmode; |
||
1321 | serge | 1273 | |
1963 | serge | 1274 | if (timing->pixel_clock) { |
1275 | newmode = drm_mode_detailed(closure->connector->dev, |
||
1276 | closure->edid, timing, |
||
1277 | closure->quirks); |
||
1278 | if (!newmode) |
||
1279 | return; |
||
1321 | serge | 1280 | |
1963 | serge | 1281 | if (closure->preferred) |
1282 | newmode->type |= DRM_MODE_TYPE_PREFERRED; |
||
1123 | serge | 1283 | |
1963 | serge | 1284 | drm_mode_probed_add(closure->connector, newmode); |
1285 | closure->modes++; |
||
1286 | closure->preferred = 0; |
||
1287 | } |
||
1179 | serge | 1288 | } |
1321 | serge | 1289 | |
1963 | serge | 1290 | /* |
1291 | * add_detailed_modes - Add modes from detailed timings |
||
1179 | serge | 1292 | * @connector: attached connector |
1963 | serge | 1293 | * @edid: EDID block to scan |
1179 | serge | 1294 | * @quirks: quirks to apply |
1295 | */ |
||
1963 | serge | 1296 | static int |
1297 | add_detailed_modes(struct drm_connector *connector, struct edid *edid, |
||
1298 | u32 quirks) |
||
1179 | serge | 1299 | { |
1963 | serge | 1300 | struct detailed_mode_closure closure = { |
1301 | connector, |
||
1302 | edid, |
||
1303 | 1, |
||
1304 | quirks, |
||
1305 | |||
1306 | }; |
||
1179 | serge | 1307 | |
1963 | serge | 1308 | if (closure.preferred && !version_greater(edid, 1, 3)) |
1309 | closure.preferred = |
||
1310 | (edid->features & DRM_EDID_FEATURE_PREFERRED_TIMING); |
||
1179 | serge | 1311 | |
1963 | serge | 1312 | drm_for_each_detailed_block((u8 *)edid, do_detailed_mode, &closure); |
1179 | serge | 1313 | |
1963 | serge | 1314 | return closure.modes; |
1315 | } |
||
1179 | serge | 1316 | |
1963 | serge | 1317 | #define HDMI_IDENTIFIER 0x000C03 |
1318 | #define AUDIO_BLOCK 0x01 |
||
1319 | #define VENDOR_BLOCK 0x03 |
||
1320 | #define EDID_BASIC_AUDIO (1 << 6) |
||
1179 | serge | 1321 | |
1123 | serge | 1322 | /** |
1963 | serge | 1323 | * Search EDID for CEA extension block. |
1123 | serge | 1324 | */ |
1963 | serge | 1325 | u8 *drm_find_cea_extension(struct edid *edid) |
1123 | serge | 1326 | { |
1963 | serge | 1327 | u8 *edid_ext = NULL; |
1321 | serge | 1328 | int i; |
1123 | serge | 1329 | |
1963 | serge | 1330 | /* No EDID or EDID extensions */ |
1331 | if (edid == NULL || edid->extensions == 0) |
||
1332 | return NULL; |
||
1321 | serge | 1333 | |
1963 | serge | 1334 | /* Find CEA extension */ |
1335 | for (i = 0; i < edid->extensions; i++) { |
||
1336 | edid_ext = (u8 *)edid + EDID_LENGTH * (i + 1); |
||
1337 | if (edid_ext[0] == CEA_EXT) |
||
1338 | break; |
||
1123 | serge | 1339 | } |
1340 | |||
1963 | serge | 1341 | if (i == edid->extensions) |
1342 | return NULL; |
||
1123 | serge | 1343 | |
1963 | serge | 1344 | return edid_ext; |
1123 | serge | 1345 | } |
1963 | serge | 1346 | EXPORT_SYMBOL(drm_find_cea_extension); |
1123 | serge | 1347 | |
1348 | /** |
||
1349 | * drm_detect_hdmi_monitor - detect whether monitor is hdmi. |
||
1350 | * @edid: monitor EDID information |
||
1351 | * |
||
1352 | * Parse the CEA extension according to CEA-861-B. |
||
1353 | * Return true if HDMI, false if not or unknown. |
||
1354 | */ |
||
1355 | bool drm_detect_hdmi_monitor(struct edid *edid) |
||
1356 | { |
||
1963 | serge | 1357 | u8 *edid_ext; |
1358 | int i, hdmi_id; |
||
1123 | serge | 1359 | int start_offset, end_offset; |
1360 | bool is_hdmi = false; |
||
1361 | |||
1963 | serge | 1362 | edid_ext = drm_find_cea_extension(edid); |
1363 | if (!edid_ext) |
||
1123 | serge | 1364 | goto end; |
1365 | |||
1366 | /* Data block offset in CEA extension block */ |
||
1367 | start_offset = 4; |
||
1368 | end_offset = edid_ext[2]; |
||
1369 | |||
1370 | /* |
||
1371 | * Because HDMI identifier is in Vendor Specific Block, |
||
1372 | * search it from all data blocks of CEA extension. |
||
1373 | */ |
||
1374 | for (i = start_offset; i < end_offset; |
||
1375 | /* Increased by data block len */ |
||
1376 | i += ((edid_ext[i] & 0x1f) + 1)) { |
||
1377 | /* Find vendor specific block */ |
||
1378 | if ((edid_ext[i] >> 5) == VENDOR_BLOCK) { |
||
1379 | hdmi_id = edid_ext[i + 1] | (edid_ext[i + 2] << 8) | |
||
1380 | edid_ext[i + 3] << 16; |
||
1381 | /* Find HDMI identifier */ |
||
1382 | if (hdmi_id == HDMI_IDENTIFIER) |
||
1383 | is_hdmi = true; |
||
1384 | break; |
||
1385 | } |
||
1386 | } |
||
1387 | |||
1388 | end: |
||
1389 | return is_hdmi; |
||
1390 | } |
||
1391 | EXPORT_SYMBOL(drm_detect_hdmi_monitor); |
||
1392 | |||
1393 | /** |
||
1963 | serge | 1394 | * drm_detect_monitor_audio - check monitor audio capability |
1395 | * |
||
1396 | * Monitor should have CEA extension block. |
||
1397 | * If monitor has 'basic audio', but no CEA audio blocks, it's 'basic |
||
1398 | * audio' only. If there is any audio extension block and supported |
||
1399 | * audio format, assume at least 'basic audio' support, even if 'basic |
||
1400 | * audio' is not defined in EDID. |
||
1401 | * |
||
1402 | */ |
||
1403 | bool drm_detect_monitor_audio(struct edid *edid) |
||
1404 | { |
||
1405 | u8 *edid_ext; |
||
1406 | int i, j; |
||
1407 | bool has_audio = false; |
||
1408 | int start_offset, end_offset; |
||
1409 | |||
1410 | edid_ext = drm_find_cea_extension(edid); |
||
1411 | if (!edid_ext) |
||
1412 | goto end; |
||
1413 | |||
1414 | has_audio = ((edid_ext[3] & EDID_BASIC_AUDIO) != 0); |
||
1415 | |||
1416 | if (has_audio) { |
||
1417 | DRM_DEBUG_KMS("Monitor has basic audio support\n"); |
||
1418 | goto end; |
||
1419 | } |
||
1420 | |||
1421 | /* Data block offset in CEA extension block */ |
||
1422 | start_offset = 4; |
||
1423 | end_offset = edid_ext[2]; |
||
1424 | |||
1425 | for (i = start_offset; i < end_offset; |
||
1426 | i += ((edid_ext[i] & 0x1f) + 1)) { |
||
1427 | if ((edid_ext[i] >> 5) == AUDIO_BLOCK) { |
||
1428 | has_audio = true; |
||
1429 | for (j = 1; j < (edid_ext[i] & 0x1f); j += 3) |
||
1430 | DRM_DEBUG_KMS("CEA audio format %d\n", |
||
1431 | (edid_ext[i + j] >> 3) & 0xf); |
||
1432 | goto end; |
||
1433 | } |
||
1434 | } |
||
1435 | end: |
||
1436 | return has_audio; |
||
1437 | } |
||
1438 | EXPORT_SYMBOL(drm_detect_monitor_audio); |
||
1439 | |||
1440 | /** |
||
1441 | * drm_add_display_info - pull display info out if present |
||
1442 | * @edid: EDID data |
||
1443 | * @info: display info (attached to connector) |
||
1444 | * |
||
1445 | * Grab any available display info and stuff it into the drm_display_info |
||
1446 | * structure that's part of the connector. Useful for tracking bpp and |
||
1447 | * color spaces. |
||
1448 | */ |
||
1449 | static void drm_add_display_info(struct edid *edid, |
||
1450 | struct drm_display_info *info) |
||
1451 | { |
||
1452 | info->width_mm = edid->width_cm * 10; |
||
1453 | info->height_mm = edid->height_cm * 10; |
||
1454 | |||
1455 | /* driver figures it out in this case */ |
||
1456 | info->bpc = 0; |
||
1457 | info->color_formats = 0; |
||
1458 | |||
1459 | /* Only defined for 1.4 with digital displays */ |
||
1460 | if (edid->revision < 4) |
||
1461 | return; |
||
1462 | |||
1463 | if (!(edid->input & DRM_EDID_INPUT_DIGITAL)) |
||
1464 | return; |
||
1465 | |||
1466 | switch (edid->input & DRM_EDID_DIGITAL_DEPTH_MASK) { |
||
1467 | case DRM_EDID_DIGITAL_DEPTH_6: |
||
1468 | info->bpc = 6; |
||
1469 | break; |
||
1470 | case DRM_EDID_DIGITAL_DEPTH_8: |
||
1471 | info->bpc = 8; |
||
1472 | break; |
||
1473 | case DRM_EDID_DIGITAL_DEPTH_10: |
||
1474 | info->bpc = 10; |
||
1475 | break; |
||
1476 | case DRM_EDID_DIGITAL_DEPTH_12: |
||
1477 | info->bpc = 12; |
||
1478 | break; |
||
1479 | case DRM_EDID_DIGITAL_DEPTH_14: |
||
1480 | info->bpc = 14; |
||
1481 | break; |
||
1482 | case DRM_EDID_DIGITAL_DEPTH_16: |
||
1483 | info->bpc = 16; |
||
1484 | break; |
||
1485 | case DRM_EDID_DIGITAL_DEPTH_UNDEF: |
||
1486 | default: |
||
1487 | info->bpc = 0; |
||
1488 | break; |
||
1489 | } |
||
1490 | |||
1491 | info->color_formats = DRM_COLOR_FORMAT_RGB444; |
||
1492 | if (info->color_formats & DRM_EDID_FEATURE_RGB_YCRCB444) |
||
1493 | info->color_formats = DRM_COLOR_FORMAT_YCRCB444; |
||
1494 | if (info->color_formats & DRM_EDID_FEATURE_RGB_YCRCB422) |
||
1495 | info->color_formats = DRM_COLOR_FORMAT_YCRCB422; |
||
1496 | } |
||
1497 | |||
1498 | /** |
||
1123 | serge | 1499 | * drm_add_edid_modes - add modes from EDID data, if available |
1500 | * @connector: connector we're probing |
||
1501 | * @edid: edid data |
||
1502 | * |
||
1503 | * Add the specified modes to the connector's mode list. |
||
1504 | * |
||
1505 | * Return number of modes added or 0 if we couldn't find any. |
||
1506 | */ |
||
1507 | int drm_add_edid_modes(struct drm_connector *connector, struct edid *edid) |
||
1508 | { |
||
1509 | int num_modes = 0; |
||
1510 | u32 quirks; |
||
1511 | |||
1512 | if (edid == NULL) { |
||
1513 | return 0; |
||
1514 | } |
||
1430 | serge | 1515 | if (!drm_edid_is_valid(edid)) { |
1963 | serge | 1516 | dev_warn(connector->dev->dev, "%s: EDID invalid.\n", |
1246 | serge | 1517 | drm_get_connector_name(connector)); |
1123 | serge | 1518 | return 0; |
1519 | } |
||
1520 | |||
1521 | quirks = edid_get_quirks(edid); |
||
1522 | |||
1963 | serge | 1523 | /* |
1524 | * EDID spec says modes should be preferred in this order: |
||
1525 | * - preferred detailed mode |
||
1526 | * - other detailed modes from base block |
||
1527 | * - detailed modes from extension blocks |
||
1528 | * - CVT 3-byte code modes |
||
1529 | * - standard timing codes |
||
1530 | * - established timing codes |
||
1531 | * - modes inferred from GTF or CVT range information |
||
1532 | * |
||
1533 | * We get this pretty much right. |
||
1534 | * |
||
1535 | * XXX order for additional mode types in extension blocks? |
||
1536 | */ |
||
1537 | num_modes += add_detailed_modes(connector, edid, quirks); |
||
1538 | num_modes += add_cvt_modes(connector, edid); |
||
1539 | num_modes += add_standard_modes(connector, edid); |
||
1123 | serge | 1540 | num_modes += add_established_modes(connector, edid); |
1963 | serge | 1541 | num_modes += add_inferred_modes(connector, edid); |
1123 | serge | 1542 | |
1543 | if (quirks & (EDID_QUIRK_PREFER_LARGE_60 | EDID_QUIRK_PREFER_LARGE_75)) |
||
1544 | edid_fixup_preferred(connector, quirks); |
||
1545 | |||
1963 | serge | 1546 | drm_add_display_info(edid, &connector->display_info); |
1123 | serge | 1547 | |
1548 | return num_modes; |
||
1549 | } |
||
1550 | EXPORT_SYMBOL(drm_add_edid_modes); |
||
1179 | serge | 1551 | |
1552 | /** |
||
1553 | * drm_add_modes_noedid - add modes for the connectors without EDID |
||
1554 | * @connector: connector we're probing |
||
1555 | * @hdisplay: the horizontal display limit |
||
1556 | * @vdisplay: the vertical display limit |
||
1557 | * |
||
1558 | * Add the specified modes to the connector's mode list. Only when the |
||
1559 | * hdisplay/vdisplay is not beyond the given limit, it will be added. |
||
1560 | * |
||
1561 | * Return number of modes added or 0 if we couldn't find any. |
||
1562 | */ |
||
1563 | int drm_add_modes_noedid(struct drm_connector *connector, |
||
1564 | int hdisplay, int vdisplay) |
||
1565 | { |
||
1566 | int i, count, num_modes = 0; |
||
1963 | serge | 1567 | struct drm_display_mode *mode; |
1179 | serge | 1568 | struct drm_device *dev = connector->dev; |
1569 | |||
1570 | count = sizeof(drm_dmt_modes) / sizeof(struct drm_display_mode); |
||
1571 | if (hdisplay < 0) |
||
1572 | hdisplay = 0; |
||
1573 | if (vdisplay < 0) |
||
1574 | vdisplay = 0; |
||
1575 | |||
1576 | for (i = 0; i < count; i++) { |
||
1963 | serge | 1577 | const struct drm_display_mode *ptr = &drm_dmt_modes[i]; |
1179 | serge | 1578 | if (hdisplay && vdisplay) { |
1579 | /* |
||
1580 | * Only when two are valid, they will be used to check |
||
1581 | * whether the mode should be added to the mode list of |
||
1582 | * the connector. |
||
1583 | */ |
||
1584 | if (ptr->hdisplay > hdisplay || |
||
1585 | ptr->vdisplay > vdisplay) |
||
1586 | continue; |
||
1587 | } |
||
1321 | serge | 1588 | if (drm_mode_vrefresh(ptr) > 61) |
1589 | continue; |
||
1179 | serge | 1590 | mode = drm_mode_duplicate(dev, ptr); |
1591 | if (mode) { |
||
1592 | drm_mode_probed_add(connector, mode); |
||
1593 | num_modes++; |
||
1594 | } |
||
1595 | } |
||
1596 | return num_modes; |
||
1597 | } |
||
1598 | EXPORT_SYMBOL(drm_add_modes_noedid);>>>>>>><>><>>>><>><>>><>>>>=>><>><>><>>>=>=>><>><>>>><>><>><>><>><>><>><>>>><>=>>>>>> |