1 /*
2 * Copyright (c) 2006 Luc Verhaegen (quirks list)
3 * Copyright (c) 2007-2008 Intel Corporation
4 * Jesse Barnes <jesse.barnes@intel.com>
5 * Copyright 2010 Red Hat, Inc.
6 *
7 * DDC probing routines (drm_ddc_read & drm_do_probe_ddc_edid) originally from
8 * FB layer.
9 * Copyright (C) 2006 Dennis Munsie <dmunsie@cecropia.com>
10 *
11 * Permission is hereby granted, free of charge, to any person obtaining a
12 * copy of this software and associated documentation files (the "Software"),
13 * to deal in the Software without restriction, including without limitation
14 * the rights to use, copy, modify, merge, publish, distribute, sub license,
15 * and/or sell copies of the Software, and to permit persons to whom the
16 * Software is furnished to do so, subject to the following conditions:
17 *
18 * The above copyright notice and this permission notice (including the
19 * next paragraph) shall be included in all copies or substantial portions
20 * of the Software.
21 *
22 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
23 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
24 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
25 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
26 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
27 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
28 * DEALINGS IN THE SOFTWARE.
29 */
30 #include <linux/kernel.h>
31 #include <linux/slab.h>
32 #include <linux/hdmi.h>
33 #include <linux/i2c.h>
34 #include <linux/module.h>
35 #include <drm/drmP.h>
36 #include <drm/drm_edid.h>
37
38 #define version_greater(edid, maj, min) \
39 (((edid)->version > (maj)) || \
40 ((edid)->version == (maj) && (edid)->revision > (min)))
41
42 #define EDID_EST_TIMINGS 16
43 #define EDID_STD_TIMINGS 8
44 #define EDID_DETAILED_TIMINGS 4
45
46 /*
47 * EDID blocks out in the wild have a variety of bugs, try to collect
48 * them here (note that userspace may work around broken monitors first,
49 * but fixes should make their way here so that the kernel "just works"
50 * on as many displays as possible).
51 */
52
53 /* First detailed mode wrong, use largest 60Hz mode */
54 #define EDID_QUIRK_PREFER_LARGE_60 (1 << 0)
55 /* Reported 135MHz pixel clock is too high, needs adjustment */
56 #define EDID_QUIRK_135_CLOCK_TOO_HIGH (1 << 1)
57 /* Prefer the largest mode at 75 Hz */
58 #define EDID_QUIRK_PREFER_LARGE_75 (1 << 2)
59 /* Detail timing is in cm not mm */
60 #define EDID_QUIRK_DETAILED_IN_CM (1 << 3)
61 /* Detailed timing descriptors have bogus size values, so just take the
62 * maximum size and use that.
63 */
64 #define EDID_QUIRK_DETAILED_USE_MAXIMUM_SIZE (1 << 4)
65 /* Monitor forgot to set the first detailed is preferred bit. */
66 #define EDID_QUIRK_FIRST_DETAILED_PREFERRED (1 << 5)
67 /* use +hsync +vsync for detailed mode */
68 #define EDID_QUIRK_DETAILED_SYNC_PP (1 << 6)
69 /* Force reduced-blanking timings for detailed modes */
70 #define EDID_QUIRK_FORCE_REDUCED_BLANKING (1 << 7)
71 /* Force 8bpc */
72 #define EDID_QUIRK_FORCE_8BPC (1 << 8)
73 /* Force 12bpc */
74 #define EDID_QUIRK_FORCE_12BPC (1 << 9)
75
76 struct detailed_mode_closure {
77 struct drm_connector *connector;
78 struct edid *edid;
79 bool preferred;
80 u32 quirks;
81 int modes;
82 };
83
84 #define LEVEL_DMT 0
85 #define LEVEL_GTF 1
86 #define LEVEL_GTF2 2
87 #define LEVEL_CVT 3
88
89 static struct edid_quirk {
90 char vendor[4];
91 int product_id;
92 u32 quirks;
93 } edid_quirk_list[] = {
94 /* Acer AL1706 */
95 { "ACR", 44358, EDID_QUIRK_PREFER_LARGE_60 },
96 /* Acer F51 */
97 { "API", 0x7602, EDID_QUIRK_PREFER_LARGE_60 },
98 /* Unknown Acer */
99 { "ACR", 2423, EDID_QUIRK_FIRST_DETAILED_PREFERRED },
100
101 /* Belinea 10 15 55 */
102 { "MAX", 1516, EDID_QUIRK_PREFER_LARGE_60 },
103 { "MAX", 0x77e, EDID_QUIRK_PREFER_LARGE_60 },
104
105 /* Envision Peripherals, Inc. EN-7100e */
106 { "EPI", 59264, EDID_QUIRK_135_CLOCK_TOO_HIGH },
107 /* Envision EN2028 */
108 { "EPI", 8232, EDID_QUIRK_PREFER_LARGE_60 },
109
110 /* Funai Electronics PM36B */
111 { "FCM", 13600, EDID_QUIRK_PREFER_LARGE_75 |
112 EDID_QUIRK_DETAILED_IN_CM },
113
114 /* LG Philips LCD LP154W01-A5 */
115 { "LPL", 0, EDID_QUIRK_DETAILED_USE_MAXIMUM_SIZE },
116 { "LPL", 0x2a00, EDID_QUIRK_DETAILED_USE_MAXIMUM_SIZE },
117
118 /* Philips 107p5 CRT */
119 { "PHL", 57364, EDID_QUIRK_FIRST_DETAILED_PREFERRED },
120
121 /* Proview AY765C */
122 { "PTS", 765, EDID_QUIRK_FIRST_DETAILED_PREFERRED },
123
124 /* Samsung SyncMaster 205BW. Note: irony */
125 { "SAM", 541, EDID_QUIRK_DETAILED_SYNC_PP },
126 /* Samsung SyncMaster 22[5-6]BW */
127 { "SAM", 596, EDID_QUIRK_PREFER_LARGE_60 },
128 { "SAM", 638, EDID_QUIRK_PREFER_LARGE_60 },
129
130 /* Sony PVM-2541A does up to 12 bpc, but only reports max 8 bpc */
131 { "SNY", 0x2541, EDID_QUIRK_FORCE_12BPC },
132
133 /* ViewSonic VA2026w */
134 { "VSC", 5020, EDID_QUIRK_FORCE_REDUCED_BLANKING },
135
136 /* Medion MD 30217 PG */
137 { "MED", 0x7b8, EDID_QUIRK_PREFER_LARGE_75 },
138
139 /* Panel in Samsung NP700G7A-S01PL notebook reports 6bpc */
140 { "SEC", 0xd033, EDID_QUIRK_FORCE_8BPC },
141 };
142
143 /*
144 * Autogenerated from the DMT spec.
145 * This table is copied from xfree86/modes/xf86EdidModes.c.
146 */
147 static const struct drm_display_mode drm_dmt_modes[] = {
148 /* 640x350@85Hz */
149 { DRM_MODE("640x350", DRM_MODE_TYPE_DRIVER, 31500, 640, 672,
150 736, 832, 0, 350, 382, 385, 445, 0,
151 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC) },
152 /* 640x400@85Hz */
153 { DRM_MODE("640x400", DRM_MODE_TYPE_DRIVER, 31500, 640, 672,
154 736, 832, 0, 400, 401, 404, 445, 0,
155 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
156 /* 720x400@85Hz */
157 { DRM_MODE("720x400", DRM_MODE_TYPE_DRIVER, 35500, 720, 756,
158 828, 936, 0, 400, 401, 404, 446, 0,
159 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
160 /* 640x480@60Hz */
161 { DRM_MODE("640x480", DRM_MODE_TYPE_DRIVER, 25175, 640, 656,
162 752, 800, 0, 480, 489, 492, 525, 0,
163 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC) },
164 /* 640x480@72Hz */
165 { DRM_MODE("640x480", DRM_MODE_TYPE_DRIVER, 31500, 640, 664,
166 704, 832, 0, 480, 489, 492, 520, 0,
167 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC) },
168 /* 640x480@75Hz */
169 { DRM_MODE("640x480", DRM_MODE_TYPE_DRIVER, 31500, 640, 656,
170 720, 840, 0, 480, 481, 484, 500, 0,
171 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC) },
172 /* 640x480@85Hz */
173 { DRM_MODE("640x480", DRM_MODE_TYPE_DRIVER, 36000, 640, 696,
174 752, 832, 0, 480, 481, 484, 509, 0,
175 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC) },
176 /* 800x600@56Hz */
177 { DRM_MODE("800x600", DRM_MODE_TYPE_DRIVER, 36000, 800, 824,
178 896, 1024, 0, 600, 601, 603, 625, 0,
179 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
180 /* 800x600@60Hz */
181 { DRM_MODE("800x600", DRM_MODE_TYPE_DRIVER, 40000, 800, 840,
182 968, 1056, 0, 600, 601, 605, 628, 0,
183 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
184 /* 800x600@72Hz */
185 { DRM_MODE("800x600", DRM_MODE_TYPE_DRIVER, 50000, 800, 856,
186 976, 1040, 0, 600, 637, 643, 666, 0,
187 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
188 /* 800x600@75Hz */
189 { DRM_MODE("800x600", DRM_MODE_TYPE_DRIVER, 49500, 800, 816,
190 896, 1056, 0, 600, 601, 604, 625, 0,
191 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
192 /* 800x600@85Hz */
193 { DRM_MODE("800x600", DRM_MODE_TYPE_DRIVER, 56250, 800, 832,
194 896, 1048, 0, 600, 601, 604, 631, 0,
195 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
196 /* 800x600@120Hz RB */
197 { DRM_MODE("800x600", DRM_MODE_TYPE_DRIVER, 73250, 800, 848,
198 880, 960, 0, 600, 603, 607, 636, 0,
199 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC) },
200 /* 848x480@60Hz */
201 { DRM_MODE("848x480", DRM_MODE_TYPE_DRIVER, 33750, 848, 864,
202 976, 1088, 0, 480, 486, 494, 517, 0,
203 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
204 /* 1024x768@43Hz, interlace */
205 { DRM_MODE("1024x768i", DRM_MODE_TYPE_DRIVER, 44900, 1024, 1032,
206 1208, 1264, 0, 768, 768, 772, 817, 0,
207 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC |
208 DRM_MODE_FLAG_INTERLACE) },
209 /* 1024x768@60Hz */
210 { DRM_MODE("1024x768", DRM_MODE_TYPE_DRIVER, 65000, 1024, 1048,
211 1184, 1344, 0, 768, 771, 777, 806, 0,
212 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC) },
213 /* 1024x768@70Hz */
214 { DRM_MODE("1024x768", DRM_MODE_TYPE_DRIVER, 75000, 1024, 1048,
215 1184, 1328, 0, 768, 771, 777, 806, 0,
216 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC) },
217 /* 1024x768@75Hz */
218 { DRM_MODE("1024x768", DRM_MODE_TYPE_DRIVER, 78750, 1024, 1040,
219 1136, 1312, 0, 768, 769, 772, 800, 0,
220 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
221 /* 1024x768@85Hz */
222 { DRM_MODE("1024x768", DRM_MODE_TYPE_DRIVER, 94500, 1024, 1072,
223 1168, 1376, 0, 768, 769, 772, 808, 0,
224 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
225 /* 1024x768@120Hz RB */
226 { DRM_MODE("1024x768", DRM_MODE_TYPE_DRIVER, 115500, 1024, 1072,
227 1104, 1184, 0, 768, 771, 775, 813, 0,
228 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC) },
229 /* 1152x864@75Hz */
230 { DRM_MODE("1152x864", DRM_MODE_TYPE_DRIVER, 108000, 1152, 1216,
231 1344, 1600, 0, 864, 865, 868, 900, 0,
232 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
233 /* 1280x768@60Hz RB */
234 { DRM_MODE("1280x768", DRM_MODE_TYPE_DRIVER, 68250, 1280, 1328,
235 1360, 1440, 0, 768, 771, 778, 790, 0,
236 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC) },
237 /* 1280x768@60Hz */
238 { DRM_MODE("1280x768", DRM_MODE_TYPE_DRIVER, 79500, 1280, 1344,
239 1472, 1664, 0, 768, 771, 778, 798, 0,
240 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
241 /* 1280x768@75Hz */
242 { DRM_MODE("1280x768", DRM_MODE_TYPE_DRIVER, 102250, 1280, 1360,
243 1488, 1696, 0, 768, 771, 778, 805, 0,
244 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC) },
245 /* 1280x768@85Hz */
246 { DRM_MODE("1280x768", DRM_MODE_TYPE_DRIVER, 117500, 1280, 1360,
247 1496, 1712, 0, 768, 771, 778, 809, 0,
248 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
249 /* 1280x768@120Hz RB */
250 { DRM_MODE("1280x768", DRM_MODE_TYPE_DRIVER, 140250, 1280, 1328,
251 1360, 1440, 0, 768, 771, 778, 813, 0,
252 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC) },
253 /* 1280x800@60Hz RB */
254 { DRM_MODE("1280x800", DRM_MODE_TYPE_DRIVER, 71000, 1280, 1328,
255 1360, 1440, 0, 800, 803, 809, 823, 0,
256 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC) },
257 /* 1280x800@60Hz */
258 { DRM_MODE("1280x800", DRM_MODE_TYPE_DRIVER, 83500, 1280, 1352,
259 1480, 1680, 0, 800, 803, 809, 831, 0,
260 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC) },
261 /* 1280x800@75Hz */
262 { DRM_MODE("1280x800", DRM_MODE_TYPE_DRIVER, 106500, 1280, 1360,
263 1488, 1696, 0, 800, 803, 809, 838, 0,
264 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
265 /* 1280x800@85Hz */
266 { DRM_MODE("1280x800", DRM_MODE_TYPE_DRIVER, 122500, 1280, 1360,
267 1496, 1712, 0, 800, 803, 809, 843, 0,
268 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
269 /* 1280x800@120Hz RB */
270 { DRM_MODE("1280x800", DRM_MODE_TYPE_DRIVER, 146250, 1280, 1328,
271 1360, 1440, 0, 800, 803, 809, 847, 0,
272 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC) },
273 /* 1280x960@60Hz */
274 { DRM_MODE("1280x960", DRM_MODE_TYPE_DRIVER, 108000, 1280, 1376,
275 1488, 1800, 0, 960, 961, 964, 1000, 0,
276 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
277 /* 1280x960@85Hz */
278 { DRM_MODE("1280x960", DRM_MODE_TYPE_DRIVER, 148500, 1280, 1344,
279 1504, 1728, 0, 960, 961, 964, 1011, 0,
280 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
281 /* 1280x960@120Hz RB */
282 { DRM_MODE("1280x960", DRM_MODE_TYPE_DRIVER, 175500, 1280, 1328,
283 1360, 1440, 0, 960, 963, 967, 1017, 0,
284 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC) },
285 /* 1280x1024@60Hz */
286 { DRM_MODE("1280x1024", DRM_MODE_TYPE_DRIVER, 108000, 1280, 1328,
287 1440, 1688, 0, 1024, 1025, 1028, 1066, 0,
288 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
289 /* 1280x1024@75Hz */
290 { DRM_MODE("1280x1024", DRM_MODE_TYPE_DRIVER, 135000, 1280, 1296,
291 1440, 1688, 0, 1024, 1025, 1028, 1066, 0,
292 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
293 /* 1280x1024@85Hz */
294 { DRM_MODE("1280x1024", DRM_MODE_TYPE_DRIVER, 157500, 1280, 1344,
295 1504, 1728, 0, 1024, 1025, 1028, 1072, 0,
296 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
297 /* 1280x1024@120Hz RB */
298 { DRM_MODE("1280x1024", DRM_MODE_TYPE_DRIVER, 187250, 1280, 1328,
299 1360, 1440, 0, 1024, 1027, 1034, 1084, 0,
300 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC) },
301 /* 1360x768@60Hz */
302 { DRM_MODE("1360x768", DRM_MODE_TYPE_DRIVER, 85500, 1360, 1424,
303 1536, 1792, 0, 768, 771, 777, 795, 0,
304 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
305 /* 1360x768@120Hz RB */
306 { DRM_MODE("1360x768", DRM_MODE_TYPE_DRIVER, 148250, 1360, 1408,
307 1440, 1520, 0, 768, 771, 776, 813, 0,
308 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC) },
309 /* 1400x1050@60Hz RB */
310 { DRM_MODE("1400x1050", DRM_MODE_TYPE_DRIVER, 101000, 1400, 1448,
311 1480, 1560, 0, 1050, 1053, 1057, 1080, 0,
312 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC) },
313 /* 1400x1050@60Hz */
314 { DRM_MODE("1400x1050", DRM_MODE_TYPE_DRIVER, 121750, 1400, 1488,
315 1632, 1864, 0, 1050, 1053, 1057, 1089, 0,
316 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
317 /* 1400x1050@75Hz */
318 { DRM_MODE("1400x1050", DRM_MODE_TYPE_DRIVER, 156000, 1400, 1504,
319 1648, 1896, 0, 1050, 1053, 1057, 1099, 0,
320 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
321 /* 1400x1050@85Hz */
322 { DRM_MODE("1400x1050", DRM_MODE_TYPE_DRIVER, 179500, 1400, 1504,
323 1656, 1912, 0, 1050, 1053, 1057, 1105, 0,
324 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
325 /* 1400x1050@120Hz RB */
326 { DRM_MODE("1400x1050", DRM_MODE_TYPE_DRIVER, 208000, 1400, 1448,
327 1480, 1560, 0, 1050, 1053, 1057, 1112, 0,
328 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC) },
329 /* 1440x900@60Hz RB */
330 { DRM_MODE("1440x900", DRM_MODE_TYPE_DRIVER, 88750, 1440, 1488,
331 1520, 1600, 0, 900, 903, 909, 926, 0,
332 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC) },
333 /* 1440x900@60Hz */
334 { DRM_MODE("1440x900", DRM_MODE_TYPE_DRIVER, 106500, 1440, 1520,
335 1672, 1904, 0, 900, 903, 909, 934, 0,
336 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
337 /* 1440x900@75Hz */
338 { DRM_MODE("1440x900", DRM_MODE_TYPE_DRIVER, 136750, 1440, 1536,
339 1688, 1936, 0, 900, 903, 909, 942, 0,
340 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
341 /* 1440x900@85Hz */
342 { DRM_MODE("1440x900", DRM_MODE_TYPE_DRIVER, 157000, 1440, 1544,
343 1696, 1952, 0, 900, 903, 909, 948, 0,
344 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
345 /* 1440x900@120Hz RB */
346 { DRM_MODE("1440x900", DRM_MODE_TYPE_DRIVER, 182750, 1440, 1488,
347 1520, 1600, 0, 900, 903, 909, 953, 0,
348 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC) },
349 /* 1600x1200@60Hz */
350 { DRM_MODE("1600x1200", DRM_MODE_TYPE_DRIVER, 162000, 1600, 1664,
351 1856, 2160, 0, 1200, 1201, 1204, 1250, 0,
352 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
353 /* 1600x1200@65Hz */
354 { DRM_MODE("1600x1200", DRM_MODE_TYPE_DRIVER, 175500, 1600, 1664,
355 1856, 2160, 0, 1200, 1201, 1204, 1250, 0,
356 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
357 /* 1600x1200@70Hz */
358 { DRM_MODE("1600x1200", DRM_MODE_TYPE_DRIVER, 189000, 1600, 1664,
359 1856, 2160, 0, 1200, 1201, 1204, 1250, 0,
360 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
361 /* 1600x1200@75Hz */
362 { DRM_MODE("1600x1200", DRM_MODE_TYPE_DRIVER, 202500, 1600, 1664,
363 1856, 2160, 0, 1200, 1201, 1204, 1250, 0,
364 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
365 /* 1600x1200@85Hz */
366 { DRM_MODE("1600x1200", DRM_MODE_TYPE_DRIVER, 229500, 1600, 1664,
367 1856, 2160, 0, 1200, 1201, 1204, 1250, 0,
368 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
369 /* 1600x1200@120Hz RB */
370 { DRM_MODE("1600x1200", DRM_MODE_TYPE_DRIVER, 268250, 1600, 1648,
371 1680, 1760, 0, 1200, 1203, 1207, 1271, 0,
372 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC) },
373 /* 1680x1050@60Hz RB */
374 { DRM_MODE("1680x1050", DRM_MODE_TYPE_DRIVER, 119000, 1680, 1728,
375 1760, 1840, 0, 1050, 1053, 1059, 1080, 0,
376 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC) },
377 /* 1680x1050@60Hz */
378 { DRM_MODE("1680x1050", DRM_MODE_TYPE_DRIVER, 146250, 1680, 1784,
379 1960, 2240, 0, 1050, 1053, 1059, 1089, 0,
380 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
381 /* 1680x1050@75Hz */
382 { DRM_MODE("1680x1050", DRM_MODE_TYPE_DRIVER, 187000, 1680, 1800,
383 1976, 2272, 0, 1050, 1053, 1059, 1099, 0,
384 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
385 /* 1680x1050@85Hz */
386 { DRM_MODE("1680x1050", DRM_MODE_TYPE_DRIVER, 214750, 1680, 1808,
387 1984, 2288, 0, 1050, 1053, 1059, 1105, 0,
388 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
389 /* 1680x1050@120Hz RB */
390 { DRM_MODE("1680x1050", DRM_MODE_TYPE_DRIVER, 245500, 1680, 1728,
391 1760, 1840, 0, 1050, 1053, 1059, 1112, 0,
392 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC) },
393 /* 1792x1344@60Hz */
394 { DRM_MODE("1792x1344", DRM_MODE_TYPE_DRIVER, 204750, 1792, 1920,
395 2120, 2448, 0, 1344, 1345, 1348, 1394, 0,
396 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
397 /* 1792x1344@75Hz */
398 { DRM_MODE("1792x1344", DRM_MODE_TYPE_DRIVER, 261000, 1792, 1888,
399 2104, 2456, 0, 1344, 1345, 1348, 1417, 0,
400 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
401 /* 1792x1344@120Hz RB */
402 { DRM_MODE("1792x1344", DRM_MODE_TYPE_DRIVER, 333250, 1792, 1840,
403 1872, 1952, 0, 1344, 1347, 1351, 1423, 0,
404 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC) },
405 /* 1856x1392@60Hz */
406 { DRM_MODE("1856x1392", DRM_MODE_TYPE_DRIVER, 218250, 1856, 1952,
407 2176, 2528, 0, 1392, 1393, 1396, 1439, 0,
408 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
409 /* 1856x1392@75Hz */
410 { DRM_MODE("1856x1392", DRM_MODE_TYPE_DRIVER, 288000, 1856, 1984,
411 2208, 2560, 0, 1392, 1395, 1399, 1500, 0,
412 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
413 /* 1856x1392@120Hz RB */
414 { DRM_MODE("1856x1392", DRM_MODE_TYPE_DRIVER, 356500, 1856, 1904,
415 1936, 2016, 0, 1392, 1395, 1399, 1474, 0,
416 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC) },
417 /* 1920x1200@60Hz RB */
418 { DRM_MODE("1920x1200", DRM_MODE_TYPE_DRIVER, 154000, 1920, 1968,
419 2000, 2080, 0, 1200, 1203, 1209, 1235, 0,
420 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC) },
421 /* 1920x1200@60Hz */
422 { DRM_MODE("1920x1200", DRM_MODE_TYPE_DRIVER, 193250, 1920, 2056,
423 2256, 2592, 0, 1200, 1203, 1209, 1245, 0,
424 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
425 /* 1920x1200@75Hz */
426 { DRM_MODE("1920x1200", DRM_MODE_TYPE_DRIVER, 245250, 1920, 2056,
427 2264, 2608, 0, 1200, 1203, 1209, 1255, 0,
428 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
429 /* 1920x1200@85Hz */
430 { DRM_MODE("1920x1200", DRM_MODE_TYPE_DRIVER, 281250, 1920, 2064,
431 2272, 2624, 0, 1200, 1203, 1209, 1262, 0,
432 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
433 /* 1920x1200@120Hz RB */
434 { DRM_MODE("1920x1200", DRM_MODE_TYPE_DRIVER, 317000, 1920, 1968,
435 2000, 2080, 0, 1200, 1203, 1209, 1271, 0,
436 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC) },
437 /* 1920x1440@60Hz */
438 { DRM_MODE("1920x1440", DRM_MODE_TYPE_DRIVER, 234000, 1920, 2048,
439 2256, 2600, 0, 1440, 1441, 1444, 1500, 0,
440 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
441 /* 1920x1440@75Hz */
442 { DRM_MODE("1920x1440", DRM_MODE_TYPE_DRIVER, 297000, 1920, 2064,
443 2288, 2640, 0, 1440, 1441, 1444, 1500, 0,
444 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
445 /* 1920x1440@120Hz RB */
446 { DRM_MODE("1920x1440", DRM_MODE_TYPE_DRIVER, 380500, 1920, 1968,
447 2000, 2080, 0, 1440, 1443, 1447, 1525, 0,
448 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC) },
449 /* 2560x1600@60Hz RB */
450 { DRM_MODE("2560x1600", DRM_MODE_TYPE_DRIVER, 268500, 2560, 2608,
451 2640, 2720, 0, 1600, 1603, 1609, 1646, 0,
452 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC) },
453 /* 2560x1600@60Hz */
454 { DRM_MODE("2560x1600", DRM_MODE_TYPE_DRIVER, 348500, 2560, 2752,
455 3032, 3504, 0, 1600, 1603, 1609, 1658, 0,
456 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
457 /* 2560x1600@75HZ */
458 { DRM_MODE("2560x1600", DRM_MODE_TYPE_DRIVER, 443250, 2560, 2768,
459 3048, 3536, 0, 1600, 1603, 1609, 1672, 0,
460 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
461 /* 2560x1600@85HZ */
462 { DRM_MODE("2560x1600", DRM_MODE_TYPE_DRIVER, 505250, 2560, 2768,
463 3048, 3536, 0, 1600, 1603, 1609, 1682, 0,
464 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
465 /* 2560x1600@120Hz RB */
466 { DRM_MODE("2560x1600", DRM_MODE_TYPE_DRIVER, 552750, 2560, 2608,
467 2640, 2720, 0, 1600, 1603, 1609, 1694, 0,
468 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC) },
469 };
470
471 /*
472 * These more or less come from the DMT spec. The 720x400 modes are
473 * inferred from historical 80x25 practice. The 640x480@67 and 832x624@75
474 * modes are old-school Mac modes. The EDID spec says the 1152x864@75 mode
475 * should be 1152x870, again for the Mac, but instead we use the x864 DMT
476 * mode.
477 *
478 * The DMT modes have been fact-checked; the rest are mild guesses.
479 */
480 static const struct drm_display_mode edid_est_modes[] = {
481 { DRM_MODE("800x600", DRM_MODE_TYPE_DRIVER, 40000, 800, 840,
482 968, 1056, 0, 600, 601, 605, 628, 0,
483 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) }, /* 800x600@60Hz */
484 { DRM_MODE("800x600", DRM_MODE_TYPE_DRIVER, 36000, 800, 824,
485 896, 1024, 0, 600, 601, 603, 625, 0,
486 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) }, /* 800x600@56Hz */
487 { DRM_MODE("640x480", DRM_MODE_TYPE_DRIVER, 31500, 640, 656,
488 720, 840, 0, 480, 481, 484, 500, 0,
489 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC) }, /* 640x480@75Hz */
490 { DRM_MODE("640x480", DRM_MODE_TYPE_DRIVER, 31500, 640, 664,
491 704, 832, 0, 480, 489, 491, 520, 0,
492 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC) }, /* 640x480@72Hz */
493 { DRM_MODE("640x480", DRM_MODE_TYPE_DRIVER, 30240, 640, 704,
494 768, 864, 0, 480, 483, 486, 525, 0,
495 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC) }, /* 640x480@67Hz */
496 { DRM_MODE("640x480", DRM_MODE_TYPE_DRIVER, 25200, 640, 656,
497 752, 800, 0, 480, 490, 492, 525, 0,
498 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC) }, /* 640x480@60Hz */
499 { DRM_MODE("720x400", DRM_MODE_TYPE_DRIVER, 35500, 720, 738,
500 846, 900, 0, 400, 421, 423, 449, 0,
501 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC) }, /* 720x400@88Hz */
502 { DRM_MODE("720x400", DRM_MODE_TYPE_DRIVER, 28320, 720, 738,
503 846, 900, 0, 400, 412, 414, 449, 0,
504 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) }, /* 720x400@70Hz */
505 { DRM_MODE("1280x1024", DRM_MODE_TYPE_DRIVER, 135000, 1280, 1296,
506 1440, 1688, 0, 1024, 1025, 1028, 1066, 0,
507 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) }, /* 1280x1024@75Hz */
508 { DRM_MODE("1024x768", DRM_MODE_TYPE_DRIVER, 78800, 1024, 1040,
509 1136, 1312, 0, 768, 769, 772, 800, 0,
510 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) }, /* 1024x768@75Hz */
511 { DRM_MODE("1024x768", DRM_MODE_TYPE_DRIVER, 75000, 1024, 1048,
512 1184, 1328, 0, 768, 771, 777, 806, 0,
513 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC) }, /* 1024x768@70Hz */
514 { DRM_MODE("1024x768", DRM_MODE_TYPE_DRIVER, 65000, 1024, 1048,
515 1184, 1344, 0, 768, 771, 777, 806, 0,
516 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC) }, /* 1024x768@60Hz */
517 { DRM_MODE("1024x768i", DRM_MODE_TYPE_DRIVER,44900, 1024, 1032,
518 1208, 1264, 0, 768, 768, 776, 817, 0,
519 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC | DRM_MODE_FLAG_INTERLACE) }, /* 1024x768@43Hz */
520 { DRM_MODE("832x624", DRM_MODE_TYPE_DRIVER, 57284, 832, 864,
521 928, 1152, 0, 624, 625, 628, 667, 0,
522 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC) }, /* 832x624@75Hz */
523 { DRM_MODE("800x600", DRM_MODE_TYPE_DRIVER, 49500, 800, 816,
524 896, 1056, 0, 600, 601, 604, 625, 0,
525 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) }, /* 800x600@75Hz */
526 { DRM_MODE("800x600", DRM_MODE_TYPE_DRIVER, 50000, 800, 856,
527 976, 1040, 0, 600, 637, 643, 666, 0,
528 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) }, /* 800x600@72Hz */
529 { DRM_MODE("1152x864", DRM_MODE_TYPE_DRIVER, 108000, 1152, 1216,
530 1344, 1600, 0, 864, 865, 868, 900, 0,
531 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) }, /* 1152x864@75Hz */
532 };
533
534 struct minimode {
535 short w;
536 short h;
537 short r;
538 short rb;
539 };
540
541 static const struct minimode est3_modes[] = {
542 /* byte 6 */
543 { 640, 350, 85, 0 },
544 { 640, 400, 85, 0 },
545 { 720, 400, 85, 0 },
546 { 640, 480, 85, 0 },
547 { 848, 480, 60, 0 },
548 { 800, 600, 85, 0 },
549 { 1024, 768, 85, 0 },
550 { 1152, 864, 75, 0 },
551 /* byte 7 */
552 { 1280, 768, 60, 1 },
553 { 1280, 768, 60, 0 },
554 { 1280, 768, 75, 0 },
555 { 1280, 768, 85, 0 },
556 { 1280, 960, 60, 0 },
557 { 1280, 960, 85, 0 },
558 { 1280, 1024, 60, 0 },
559 { 1280, 1024, 85, 0 },
560 /* byte 8 */
561 { 1360, 768, 60, 0 },
562 { 1440, 900, 60, 1 },
563 { 1440, 900, 60, 0 },
564 { 1440, 900, 75, 0 },
565 { 1440, 900, 85, 0 },
566 { 1400, 1050, 60, 1 },
567 { 1400, 1050, 60, 0 },
568 { 1400, 1050, 75, 0 },
569 /* byte 9 */
570 { 1400, 1050, 85, 0 },
571 { 1680, 1050, 60, 1 },
572 { 1680, 1050, 60, 0 },
573 { 1680, 1050, 75, 0 },
574 { 1680, 1050, 85, 0 },
575 { 1600, 1200, 60, 0 },
576 { 1600, 1200, 65, 0 },
577 { 1600, 1200, 70, 0 },
578 /* byte 10 */
579 { 1600, 1200, 75, 0 },
580 { 1600, 1200, 85, 0 },
581 { 1792, 1344, 60, 0 },
582 { 1792, 1344, 75, 0 },
583 { 1856, 1392, 60, 0 },
584 { 1856, 1392, 75, 0 },
585 { 1920, 1200, 60, 1 },
586 { 1920, 1200, 60, 0 },
587 /* byte 11 */
588 { 1920, 1200, 75, 0 },
589 { 1920, 1200, 85, 0 },
590 { 1920, 1440, 60, 0 },
591 { 1920, 1440, 75, 0 },
592 };
593
594 static const struct minimode extra_modes[] = {
595 { 1024, 576, 60, 0 },
596 { 1366, 768, 60, 0 },
597 { 1600, 900, 60, 0 },
598 { 1680, 945, 60, 0 },
599 { 1920, 1080, 60, 0 },
600 { 2048, 1152, 60, 0 },
601 { 2048, 1536, 60, 0 },
602 };
603
604 /*
605 * Probably taken from CEA-861 spec.
606 * This table is converted from xorg's hw/xfree86/modes/xf86EdidModes.c.
607 */
608 static const struct drm_display_mode edid_cea_modes[] = {
609 /* 1 - 640x480@60Hz */
610 { DRM_MODE("640x480", DRM_MODE_TYPE_DRIVER, 25175, 640, 656,
611 752, 800, 0, 480, 490, 492, 525, 0,
612 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC),
613 .vrefresh = 60, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_4_3, },
614 /* 2 - 720x480@60Hz */
615 { DRM_MODE("720x480", DRM_MODE_TYPE_DRIVER, 27000, 720, 736,
616 798, 858, 0, 480, 489, 495, 525, 0,
617 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC),
618 .vrefresh = 60, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_4_3, },
619 /* 3 - 720x480@60Hz */
620 { DRM_MODE("720x480", DRM_MODE_TYPE_DRIVER, 27000, 720, 736,
621 798, 858, 0, 480, 489, 495, 525, 0,
622 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC),
623 .vrefresh = 60, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_16_9, },
624 /* 4 - 1280x720@60Hz */
625 { DRM_MODE("1280x720", DRM_MODE_TYPE_DRIVER, 74250, 1280, 1390,
626 1430, 1650, 0, 720, 725, 730, 750, 0,
627 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC),
628 .vrefresh = 60, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_16_9, },
629 /* 5 - 1920x1080i@60Hz */
630 { DRM_MODE("1920x1080i", DRM_MODE_TYPE_DRIVER, 74250, 1920, 2008,
631 2052, 2200, 0, 1080, 1084, 1094, 1125, 0,
632 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC |
633 DRM_MODE_FLAG_INTERLACE),
634 .vrefresh = 60, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_16_9, },
635 /* 6 - 720(1440)x480i@60Hz */
636 { DRM_MODE("720x480i", DRM_MODE_TYPE_DRIVER, 13500, 720, 739,
637 801, 858, 0, 480, 488, 494, 525, 0,
638 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC |
639 DRM_MODE_FLAG_INTERLACE | DRM_MODE_FLAG_DBLCLK),
640 .vrefresh = 60, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_4_3, },
641 /* 7 - 720(1440)x480i@60Hz */
642 { DRM_MODE("720x480i", DRM_MODE_TYPE_DRIVER, 13500, 720, 739,
643 801, 858, 0, 480, 488, 494, 525, 0,
644 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC |
645 DRM_MODE_FLAG_INTERLACE | DRM_MODE_FLAG_DBLCLK),
646 .vrefresh = 60, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_16_9, },
647 /* 8 - 720(1440)x240@60Hz */
648 { DRM_MODE("720x240", DRM_MODE_TYPE_DRIVER, 13500, 720, 739,
649 801, 858, 0, 240, 244, 247, 262, 0,
650 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC |
651 DRM_MODE_FLAG_DBLCLK),
652 .vrefresh = 60, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_4_3, },
653 /* 9 - 720(1440)x240@60Hz */
654 { DRM_MODE("720x240", DRM_MODE_TYPE_DRIVER, 13500, 720, 739,
655 801, 858, 0, 240, 244, 247, 262, 0,
656 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC |
657 DRM_MODE_FLAG_DBLCLK),
658 .vrefresh = 60, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_16_9, },
659 /* 10 - 2880x480i@60Hz */
660 { DRM_MODE("2880x480i", DRM_MODE_TYPE_DRIVER, 54000, 2880, 2956,
661 3204, 3432, 0, 480, 488, 494, 525, 0,
662 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC |
663 DRM_MODE_FLAG_INTERLACE),
664 .vrefresh = 60, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_4_3, },
665 /* 11 - 2880x480i@60Hz */
666 { DRM_MODE("2880x480i", DRM_MODE_TYPE_DRIVER, 54000, 2880, 2956,
667 3204, 3432, 0, 480, 488, 494, 525, 0,
668 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC |
669 DRM_MODE_FLAG_INTERLACE),
670 .vrefresh = 60, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_16_9, },
671 /* 12 - 2880x240@60Hz */
672 { DRM_MODE("2880x240", DRM_MODE_TYPE_DRIVER, 54000, 2880, 2956,
673 3204, 3432, 0, 240, 244, 247, 262, 0,
674 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC),
675 .vrefresh = 60, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_4_3, },
676 /* 13 - 2880x240@60Hz */
677 { DRM_MODE("2880x240", DRM_MODE_TYPE_DRIVER, 54000, 2880, 2956,
678 3204, 3432, 0, 240, 244, 247, 262, 0,
679 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC),
680 .vrefresh = 60, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_16_9, },
681 /* 14 - 1440x480@60Hz */
682 { DRM_MODE("1440x480", DRM_MODE_TYPE_DRIVER, 54000, 1440, 1472,
683 1596, 1716, 0, 480, 489, 495, 525, 0,
684 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC),
685 .vrefresh = 60, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_4_3, },
686 /* 15 - 1440x480@60Hz */
687 { DRM_MODE("1440x480", DRM_MODE_TYPE_DRIVER, 54000, 1440, 1472,
688 1596, 1716, 0, 480, 489, 495, 525, 0,
689 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC),
690 .vrefresh = 60, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_16_9, },
691 /* 16 - 1920x1080@60Hz */
692 { DRM_MODE("1920x1080", DRM_MODE_TYPE_DRIVER, 148500, 1920, 2008,
693 2052, 2200, 0, 1080, 1084, 1089, 1125, 0,
694 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC),
695 .vrefresh = 60, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_16_9, },
696 /* 17 - 720x576@50Hz */
697 { DRM_MODE("720x576", DRM_MODE_TYPE_DRIVER, 27000, 720, 732,
698 796, 864, 0, 576, 581, 586, 625, 0,
699 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC),
700 .vrefresh = 50, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_4_3, },
701 /* 18 - 720x576@50Hz */
702 { DRM_MODE("720x576", DRM_MODE_TYPE_DRIVER, 27000, 720, 732,
703 796, 864, 0, 576, 581, 586, 625, 0,
704 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC),
705 .vrefresh = 50, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_16_9, },
706 /* 19 - 1280x720@50Hz */
707 { DRM_MODE("1280x720", DRM_MODE_TYPE_DRIVER, 74250, 1280, 1720,
708 1760, 1980, 0, 720, 725, 730, 750, 0,
709 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC),
710 .vrefresh = 50, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_16_9, },
711 /* 20 - 1920x1080i@50Hz */
712 { DRM_MODE("1920x1080i", DRM_MODE_TYPE_DRIVER, 74250, 1920, 2448,
713 2492, 2640, 0, 1080, 1084, 1094, 1125, 0,
714 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC |
715 DRM_MODE_FLAG_INTERLACE),
716 .vrefresh = 50, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_16_9, },
717 /* 21 - 720(1440)x576i@50Hz */
718 { DRM_MODE("720x576i", DRM_MODE_TYPE_DRIVER, 13500, 720, 732,
719 795, 864, 0, 576, 580, 586, 625, 0,
720 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC |
721 DRM_MODE_FLAG_INTERLACE | DRM_MODE_FLAG_DBLCLK),
722 .vrefresh = 50, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_4_3, },
723 /* 22 - 720(1440)x576i@50Hz */
724 { DRM_MODE("720x576i", DRM_MODE_TYPE_DRIVER, 13500, 720, 732,
725 795, 864, 0, 576, 580, 586, 625, 0,
726 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC |
727 DRM_MODE_FLAG_INTERLACE | DRM_MODE_FLAG_DBLCLK),
728 .vrefresh = 50, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_16_9, },
729 /* 23 - 720(1440)x288@50Hz */
730 { DRM_MODE("720x288", DRM_MODE_TYPE_DRIVER, 13500, 720, 732,
731 795, 864, 0, 288, 290, 293, 312, 0,
732 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC |
733 DRM_MODE_FLAG_DBLCLK),
734 .vrefresh = 50, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_4_3, },
735 /* 24 - 720(1440)x288@50Hz */
736 { DRM_MODE("720x288", DRM_MODE_TYPE_DRIVER, 13500, 720, 732,
737 795, 864, 0, 288, 290, 293, 312, 0,
738 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC |
739 DRM_MODE_FLAG_DBLCLK),
740 .vrefresh = 50, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_16_9, },
741 /* 25 - 2880x576i@50Hz */
742 { DRM_MODE("2880x576i", DRM_MODE_TYPE_DRIVER, 54000, 2880, 2928,
743 3180, 3456, 0, 576, 580, 586, 625, 0,
744 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC |
745 DRM_MODE_FLAG_INTERLACE),
746 .vrefresh = 50, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_4_3, },
747 /* 26 - 2880x576i@50Hz */
748 { DRM_MODE("2880x576i", DRM_MODE_TYPE_DRIVER, 54000, 2880, 2928,
749 3180, 3456, 0, 576, 580, 586, 625, 0,
750 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC |
751 DRM_MODE_FLAG_INTERLACE),
752 .vrefresh = 50, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_16_9, },
753 /* 27 - 2880x288@50Hz */
754 { DRM_MODE("2880x288", DRM_MODE_TYPE_DRIVER, 54000, 2880, 2928,
755 3180, 3456, 0, 288, 290, 293, 312, 0,
756 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC),
757 .vrefresh = 50, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_4_3, },
758 /* 28 - 2880x288@50Hz */
759 { DRM_MODE("2880x288", DRM_MODE_TYPE_DRIVER, 54000, 2880, 2928,
760 3180, 3456, 0, 288, 290, 293, 312, 0,
761 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC),
762 .vrefresh = 50, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_16_9, },
763 /* 29 - 1440x576@50Hz */
764 { DRM_MODE("1440x576", DRM_MODE_TYPE_DRIVER, 54000, 1440, 1464,
765 1592, 1728, 0, 576, 581, 586, 625, 0,
766 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC),
767 .vrefresh = 50, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_4_3, },
768 /* 30 - 1440x576@50Hz */
769 { DRM_MODE("1440x576", DRM_MODE_TYPE_DRIVER, 54000, 1440, 1464,
770 1592, 1728, 0, 576, 581, 586, 625, 0,
771 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC),
772 .vrefresh = 50, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_16_9, },
773 /* 31 - 1920x1080@50Hz */
774 { DRM_MODE("1920x1080", DRM_MODE_TYPE_DRIVER, 148500, 1920, 2448,
775 2492, 2640, 0, 1080, 1084, 1089, 1125, 0,
776 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC),
777 .vrefresh = 50, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_16_9, },
778 /* 32 - 1920x1080@24Hz */
779 { DRM_MODE("1920x1080", DRM_MODE_TYPE_DRIVER, 74250, 1920, 2558,
780 2602, 2750, 0, 1080, 1084, 1089, 1125, 0,
781 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC),
782 .vrefresh = 24, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_16_9, },
783 /* 33 - 1920x1080@25Hz */
784 { DRM_MODE("1920x1080", DRM_MODE_TYPE_DRIVER, 74250, 1920, 2448,
785 2492, 2640, 0, 1080, 1084, 1089, 1125, 0,
786 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC),
787 .vrefresh = 25, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_16_9, },
788 /* 34 - 1920x1080@30Hz */
789 { DRM_MODE("1920x1080", DRM_MODE_TYPE_DRIVER, 74250, 1920, 2008,
790 2052, 2200, 0, 1080, 1084, 1089, 1125, 0,
791 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC),
792 .vrefresh = 30, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_16_9, },
793 /* 35 - 2880x480@60Hz */
794 { DRM_MODE("2880x480", DRM_MODE_TYPE_DRIVER, 108000, 2880, 2944,
795 3192, 3432, 0, 480, 489, 495, 525, 0,
796 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC),
797 .vrefresh = 60, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_4_3, },
798 /* 36 - 2880x480@60Hz */
799 { DRM_MODE("2880x480", DRM_MODE_TYPE_DRIVER, 108000, 2880, 2944,
800 3192, 3432, 0, 480, 489, 495, 525, 0,
801 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC),
802 .vrefresh = 60, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_16_9, },
803 /* 37 - 2880x576@50Hz */
804 { DRM_MODE("2880x576", DRM_MODE_TYPE_DRIVER, 108000, 2880, 2928,
805 3184, 3456, 0, 576, 581, 586, 625, 0,
806 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC),
807 .vrefresh = 50, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_4_3, },
808 /* 38 - 2880x576@50Hz */
809 { DRM_MODE("2880x576", DRM_MODE_TYPE_DRIVER, 108000, 2880, 2928,
810 3184, 3456, 0, 576, 581, 586, 625, 0,
811 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC),
812 .vrefresh = 50, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_16_9, },
813 /* 39 - 1920x1080i@50Hz */
814 { DRM_MODE("1920x1080i", DRM_MODE_TYPE_DRIVER, 72000, 1920, 1952,
815 2120, 2304, 0, 1080, 1126, 1136, 1250, 0,
816 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC |
817 DRM_MODE_FLAG_INTERLACE),
818 .vrefresh = 50, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_16_9, },
819 /* 40 - 1920x1080i@100Hz */
820 { DRM_MODE("1920x1080i", DRM_MODE_TYPE_DRIVER, 148500, 1920, 2448,
821 2492, 2640, 0, 1080, 1084, 1094, 1125, 0,
822 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC |
823 DRM_MODE_FLAG_INTERLACE),
824 .vrefresh = 100, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_16_9, },
825 /* 41 - 1280x720@100Hz */
826 { DRM_MODE("1280x720", DRM_MODE_TYPE_DRIVER, 148500, 1280, 1720,
827 1760, 1980, 0, 720, 725, 730, 750, 0,
828 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC),
829 .vrefresh = 100, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_16_9, },
830 /* 42 - 720x576@100Hz */
831 { DRM_MODE("720x576", DRM_MODE_TYPE_DRIVER, 54000, 720, 732,
832 796, 864, 0, 576, 581, 586, 625, 0,
833 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC),
834 .vrefresh = 100, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_4_3, },
835 /* 43 - 720x576@100Hz */
836 { DRM_MODE("720x576", DRM_MODE_TYPE_DRIVER, 54000, 720, 732,
837 796, 864, 0, 576, 581, 586, 625, 0,
838 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC),
839 .vrefresh = 100, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_16_9, },
840 /* 44 - 720(1440)x576i@100Hz */
841 { DRM_MODE("720x576i", DRM_MODE_TYPE_DRIVER, 27000, 720, 732,
842 795, 864, 0, 576, 580, 586, 625, 0,
843 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC |
844 DRM_MODE_FLAG_INTERLACE | DRM_MODE_FLAG_DBLCLK),
845 .vrefresh = 100, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_4_3, },
846 /* 45 - 720(1440)x576i@100Hz */
847 { DRM_MODE("720x576i", DRM_MODE_TYPE_DRIVER, 27000, 720, 732,
848 795, 864, 0, 576, 580, 586, 625, 0,
849 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC |
850 DRM_MODE_FLAG_INTERLACE | DRM_MODE_FLAG_DBLCLK),
851 .vrefresh = 100, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_16_9, },
852 /* 46 - 1920x1080i@120Hz */
853 { DRM_MODE("1920x1080i", DRM_MODE_TYPE_DRIVER, 148500, 1920, 2008,
854 2052, 2200, 0, 1080, 1084, 1094, 1125, 0,
855 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC |
856 DRM_MODE_FLAG_INTERLACE),
857 .vrefresh = 120, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_16_9, },
858 /* 47 - 1280x720@120Hz */
859 { DRM_MODE("1280x720", DRM_MODE_TYPE_DRIVER, 148500, 1280, 1390,
860 1430, 1650, 0, 720, 725, 730, 750, 0,
861 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC),
862 .vrefresh = 120, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_16_9, },
863 /* 48 - 720x480@120Hz */
864 { DRM_MODE("720x480", DRM_MODE_TYPE_DRIVER, 54000, 720, 736,
865 798, 858, 0, 480, 489, 495, 525, 0,
866 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC),
867 .vrefresh = 120, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_4_3, },
868 /* 49 - 720x480@120Hz */
869 { DRM_MODE("720x480", DRM_MODE_TYPE_DRIVER, 54000, 720, 736,
870 798, 858, 0, 480, 489, 495, 525, 0,
871 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC),
872 .vrefresh = 120, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_16_9, },
873 /* 50 - 720(1440)x480i@120Hz */
874 { DRM_MODE("720x480i", DRM_MODE_TYPE_DRIVER, 27000, 720, 739,
875 801, 858, 0, 480, 488, 494, 525, 0,
876 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC |
877 DRM_MODE_FLAG_INTERLACE | DRM_MODE_FLAG_DBLCLK),
878 .vrefresh = 120, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_4_3, },
879 /* 51 - 720(1440)x480i@120Hz */
880 { DRM_MODE("720x480i", DRM_MODE_TYPE_DRIVER, 27000, 720, 739,
881 801, 858, 0, 480, 488, 494, 525, 0,
882 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC |
883 DRM_MODE_FLAG_INTERLACE | DRM_MODE_FLAG_DBLCLK),
884 .vrefresh = 120, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_16_9, },
885 /* 52 - 720x576@200Hz */
886 { DRM_MODE("720x576", DRM_MODE_TYPE_DRIVER, 108000, 720, 732,
887 796, 864, 0, 576, 581, 586, 625, 0,
888 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC),
889 .vrefresh = 200, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_4_3, },
890 /* 53 - 720x576@200Hz */
891 { DRM_MODE("720x576", DRM_MODE_TYPE_DRIVER, 108000, 720, 732,
892 796, 864, 0, 576, 581, 586, 625, 0,
893 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC),
894 .vrefresh = 200, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_16_9, },
895 /* 54 - 720(1440)x576i@200Hz */
896 { DRM_MODE("720x576i", DRM_MODE_TYPE_DRIVER, 54000, 720, 732,
897 795, 864, 0, 576, 580, 586, 625, 0,
898 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC |
899 DRM_MODE_FLAG_INTERLACE | DRM_MODE_FLAG_DBLCLK),
900 .vrefresh = 200, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_4_3, },
901 /* 55 - 720(1440)x576i@200Hz */
902 { DRM_MODE("720x576i", DRM_MODE_TYPE_DRIVER, 54000, 720, 732,
903 795, 864, 0, 576, 580, 586, 625, 0,
904 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC |
905 DRM_MODE_FLAG_INTERLACE | DRM_MODE_FLAG_DBLCLK),
906 .vrefresh = 200, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_16_9, },
907 /* 56 - 720x480@240Hz */
908 { DRM_MODE("720x480", DRM_MODE_TYPE_DRIVER, 108000, 720, 736,
909 798, 858, 0, 480, 489, 495, 525, 0,
910 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC),
911 .vrefresh = 240, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_4_3, },
912 /* 57 - 720x480@240Hz */
913 { DRM_MODE("720x480", DRM_MODE_TYPE_DRIVER, 108000, 720, 736,
914 798, 858, 0, 480, 489, 495, 525, 0,
915 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC),
916 .vrefresh = 240, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_16_9, },
917 /* 58 - 720(1440)x480i@240 */
918 { DRM_MODE("720x480i", DRM_MODE_TYPE_DRIVER, 54000, 720, 739,
919 801, 858, 0, 480, 488, 494, 525, 0,
920 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC |
921 DRM_MODE_FLAG_INTERLACE | DRM_MODE_FLAG_DBLCLK),
922 .vrefresh = 240, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_4_3, },
923 /* 59 - 720(1440)x480i@240 */
924 { DRM_MODE("720x480i", DRM_MODE_TYPE_DRIVER, 54000, 720, 739,
925 801, 858, 0, 480, 488, 494, 525, 0,
926 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC |
927 DRM_MODE_FLAG_INTERLACE | DRM_MODE_FLAG_DBLCLK),
928 .vrefresh = 240, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_16_9, },
929 /* 60 - 1280x720@24Hz */
930 { DRM_MODE("1280x720", DRM_MODE_TYPE_DRIVER, 59400, 1280, 3040,
931 3080, 3300, 0, 720, 725, 730, 750, 0,
932 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC),
933 .vrefresh = 24, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_16_9, },
934 /* 61 - 1280x720@25Hz */
935 { DRM_MODE("1280x720", DRM_MODE_TYPE_DRIVER, 74250, 1280, 3700,
936 3740, 3960, 0, 720, 725, 730, 750, 0,
937 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC),
938 .vrefresh = 25, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_16_9, },
939 /* 62 - 1280x720@30Hz */
940 { DRM_MODE("1280x720", DRM_MODE_TYPE_DRIVER, 74250, 1280, 3040,
941 3080, 3300, 0, 720, 725, 730, 750, 0,
942 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC),
943 .vrefresh = 30, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_16_9, },
944 /* 63 - 1920x1080@120Hz */
945 { DRM_MODE("1920x1080", DRM_MODE_TYPE_DRIVER, 297000, 1920, 2008,
946 2052, 2200, 0, 1080, 1084, 1089, 1125, 0,
947 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC),
948 .vrefresh = 120, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_16_9, },
949 /* 64 - 1920x1080@100Hz */
950 { DRM_MODE("1920x1080", DRM_MODE_TYPE_DRIVER, 297000, 1920, 2448,
951 2492, 2640, 0, 1080, 1084, 1094, 1125, 0,
952 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC),
953 .vrefresh = 100, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_16_9, },
954 };
955
956 /*
957 * HDMI 1.4 4k modes.
958 */
959 static const struct drm_display_mode edid_4k_modes[] = {
960 /* 1 - 3840x2160@30Hz */
961 { DRM_MODE("3840x2160", DRM_MODE_TYPE_DRIVER, 297000,
962 3840, 4016, 4104, 4400, 0,
963 2160, 2168, 2178, 2250, 0,
964 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC),
965 .vrefresh = 30, },
966 /* 2 - 3840x2160@25Hz */
967 { DRM_MODE("3840x2160", DRM_MODE_TYPE_DRIVER, 297000,
968 3840, 4896, 4984, 5280, 0,
969 2160, 2168, 2178, 2250, 0,
970 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC),
971 .vrefresh = 25, },
972 /* 3 - 3840x2160@24Hz */
973 { DRM_MODE("3840x2160", DRM_MODE_TYPE_DRIVER, 297000,
974 3840, 5116, 5204, 5500, 0,
975 2160, 2168, 2178, 2250, 0,
976 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC),
977 .vrefresh = 24, },
978 /* 4 - 4096x2160@24Hz (SMPTE) */
979 { DRM_MODE("4096x2160", DRM_MODE_TYPE_DRIVER, 297000,
980 4096, 5116, 5204, 5500, 0,
981 2160, 2168, 2178, 2250, 0,
982 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC),
983 .vrefresh = 24, },
984 };
985
986 /*** DDC fetch and block validation ***/
987
988 static const u8 edid_header[] = {
989 0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00
990 };
991
992 /**
993 * drm_edid_header_is_valid - sanity check the header of the base EDID block
994 * @raw_edid: pointer to raw base EDID block
995 *
996 * Sanity check the header of the base EDID block.
997 *
998 * Return: 8 if the header is perfect, down to 0 if it's totally wrong.
999 */
drm_edid_header_is_valid(const u8 * raw_edid)1000 int drm_edid_header_is_valid(const u8 *raw_edid)
1001 {
1002 int i, score = 0;
1003
1004 for (i = 0; i < sizeof(edid_header); i++)
1005 if (raw_edid[i] == edid_header[i])
1006 score++;
1007
1008 return score;
1009 }
1010 EXPORT_SYMBOL(drm_edid_header_is_valid);
1011
1012 static int edid_fixup __read_mostly = 6;
1013 module_param_named(edid_fixup, edid_fixup, int, 0400);
1014 MODULE_PARM_DESC(edid_fixup,
1015 "Minimum number of valid EDID header bytes (0-8, default 6)");
1016
1017 /**
1018 * drm_edid_block_valid - Sanity check the EDID block (base or extension)
1019 * @raw_edid: pointer to raw EDID block
1020 * @block: type of block to validate (0 for base, extension otherwise)
1021 * @print_bad_edid: if true, dump bad EDID blocks to the console
1022 *
1023 * Validate a base or extension EDID block and optionally dump bad blocks to
1024 * the console.
1025 *
1026 * Return: True if the block is valid, false otherwise.
1027 */
drm_edid_block_valid(u8 * raw_edid,int block,bool print_bad_edid)1028 bool drm_edid_block_valid(u8 *raw_edid, int block, bool print_bad_edid)
1029 {
1030 int i;
1031 u8 csum = 0;
1032 struct edid *edid = (struct edid *)raw_edid;
1033
1034 if (WARN_ON(!raw_edid))
1035 return false;
1036
1037 if (edid_fixup > 8 || edid_fixup < 0)
1038 edid_fixup = 6;
1039
1040 if (block == 0) {
1041 int score = drm_edid_header_is_valid(raw_edid);
1042 if (score == 8) ;
1043 else if (score >= edid_fixup) {
1044 DRM_DEBUG("Fixing EDID header, your hardware may be failing\n");
1045 memcpy(raw_edid, edid_header, sizeof(edid_header));
1046 } else {
1047 goto bad;
1048 }
1049 }
1050
1051 for (i = 0; i < EDID_LENGTH; i++)
1052 csum += raw_edid[i];
1053 if (csum) {
1054 if (print_bad_edid) {
1055 DRM_ERROR("EDID checksum is invalid, remainder is %d\n", csum);
1056 }
1057
1058 /* allow CEA to slide through, switches mangle this */
1059 if (raw_edid[0] != 0x02)
1060 goto bad;
1061 }
1062
1063 /* per-block-type checks */
1064 switch (raw_edid[0]) {
1065 case 0: /* base */
1066 if (edid->version != 1) {
1067 DRM_ERROR("EDID has major version %d, instead of 1\n", edid->version);
1068 goto bad;
1069 }
1070
1071 if (edid->revision > 4)
1072 DRM_DEBUG("EDID minor > 4, assuming backward compatibility\n");
1073 break;
1074
1075 default:
1076 break;
1077 }
1078
1079 return true;
1080
1081 bad:
1082 if (print_bad_edid) {
1083 printk(KERN_ERR "Raw EDID:\n");
1084 print_hex_dump(KERN_ERR, " \t", DUMP_PREFIX_NONE, 16, 1,
1085 raw_edid, EDID_LENGTH, false);
1086 }
1087 return false;
1088 }
1089 EXPORT_SYMBOL(drm_edid_block_valid);
1090
1091 /**
1092 * drm_edid_is_valid - sanity check EDID data
1093 * @edid: EDID data
1094 *
1095 * Sanity-check an entire EDID record (including extensions)
1096 *
1097 * Return: True if the EDID data is valid, false otherwise.
1098 */
drm_edid_is_valid(struct edid * edid)1099 bool drm_edid_is_valid(struct edid *edid)
1100 {
1101 int i;
1102 u8 *raw = (u8 *)edid;
1103
1104 if (!edid)
1105 return false;
1106
1107 for (i = 0; i <= edid->extensions; i++)
1108 if (!drm_edid_block_valid(raw + i * EDID_LENGTH, i, true))
1109 return false;
1110
1111 return true;
1112 }
1113 EXPORT_SYMBOL(drm_edid_is_valid);
1114
1115 #define DDC_SEGMENT_ADDR 0x30
1116 /**
1117 * drm_do_probe_ddc_edid() - get EDID information via I2C
1118 * @adapter: I2C device adaptor
1119 * @buf: EDID data buffer to be filled
1120 * @block: 128 byte EDID block to start fetching from
1121 * @len: EDID data buffer length to fetch
1122 *
1123 * Try to fetch EDID information by calling I2C driver functions.
1124 *
1125 * Return: 0 on success or -1 on failure.
1126 */
1127 static int
drm_do_probe_ddc_edid(struct i2c_adapter * adapter,unsigned char * buf,int block,int len)1128 drm_do_probe_ddc_edid(struct i2c_adapter *adapter, unsigned char *buf,
1129 int block, int len)
1130 {
1131 unsigned char start = block * EDID_LENGTH;
1132 unsigned char segment = block >> 1;
1133 unsigned char xfers = segment ? 3 : 2;
1134 int ret, retries = 5;
1135
1136 /*
1137 * The core I2C driver will automatically retry the transfer if the
1138 * adapter reports EAGAIN. However, we find that bit-banging transfers
1139 * are susceptible to errors under a heavily loaded machine and
1140 * generate spurious NAKs and timeouts. Retrying the transfer
1141 * of the individual block a few times seems to overcome this.
1142 */
1143 do {
1144 struct i2c_msg msgs[] = {
1145 {
1146 .addr = DDC_SEGMENT_ADDR,
1147 .flags = 0,
1148 .len = 1,
1149 .buf = &segment,
1150 }, {
1151 .addr = DDC_ADDR,
1152 .flags = 0,
1153 .len = 1,
1154 .buf = &start,
1155 }, {
1156 .addr = DDC_ADDR,
1157 .flags = I2C_M_RD,
1158 .len = len,
1159 .buf = buf,
1160 }
1161 };
1162
1163 /*
1164 * Avoid sending the segment addr to not upset non-compliant
1165 * DDC monitors.
1166 */
1167 ret = i2c_transfer(adapter, &msgs[3 - xfers], xfers);
1168
1169 if (ret == -ENXIO) {
1170 DRM_DEBUG_KMS("drm: skipping non-existent adapter %s\n",
1171 adapter->name);
1172 break;
1173 }
1174 } while (ret != xfers && --retries);
1175
1176 return ret == xfers ? 0 : -1;
1177 }
1178
drm_edid_is_zero(u8 * in_edid,int length)1179 static bool drm_edid_is_zero(u8 *in_edid, int length)
1180 {
1181 if (memchr_inv(in_edid, 0, length))
1182 return false;
1183
1184 return true;
1185 }
1186
1187 static u8 *
drm_do_get_edid(struct drm_connector * connector,struct i2c_adapter * adapter)1188 drm_do_get_edid(struct drm_connector *connector, struct i2c_adapter *adapter)
1189 {
1190 int i, j = 0, valid_extensions = 0;
1191 u8 *block, *new;
1192 bool print_bad_edid = !connector->bad_edid_counter || (drm_debug & DRM_UT_KMS);
1193
1194 if ((block = kmalloc(EDID_LENGTH, GFP_KERNEL)) == NULL)
1195 return NULL;
1196
1197 /* base block fetch */
1198 for (i = 0; i < 4; i++) {
1199 if (drm_do_probe_ddc_edid(adapter, block, 0, EDID_LENGTH))
1200 goto out;
1201 if (drm_edid_block_valid(block, 0, print_bad_edid))
1202 break;
1203 if (i == 0 && drm_edid_is_zero(block, EDID_LENGTH)) {
1204 connector->null_edid_counter++;
1205 goto carp;
1206 }
1207 }
1208 if (i == 4)
1209 goto carp;
1210
1211 /* if there's no extensions, we're done */
1212 if (block[0x7e] == 0)
1213 return block;
1214
1215 new = krealloc(block, (block[0x7e] + 1) * EDID_LENGTH, GFP_KERNEL);
1216 if (!new)
1217 goto out;
1218 block = new;
1219
1220 for (j = 1; j <= block[0x7e]; j++) {
1221 for (i = 0; i < 4; i++) {
1222 if (drm_do_probe_ddc_edid(adapter,
1223 block + (valid_extensions + 1) * EDID_LENGTH,
1224 j, EDID_LENGTH))
1225 goto out;
1226 if (drm_edid_block_valid(block + (valid_extensions + 1) * EDID_LENGTH, j, print_bad_edid)) {
1227 valid_extensions++;
1228 break;
1229 }
1230 }
1231
1232 if (i == 4 && print_bad_edid) {
1233 dev_warn(connector->dev->dev,
1234 "%s: Ignoring invalid EDID block %d.\n",
1235 connector->name, j);
1236
1237 connector->bad_edid_counter++;
1238 }
1239 }
1240
1241 if (valid_extensions != block[0x7e]) {
1242 block[EDID_LENGTH-1] += block[0x7e] - valid_extensions;
1243 block[0x7e] = valid_extensions;
1244 new = krealloc(block, (valid_extensions + 1) * EDID_LENGTH, GFP_KERNEL);
1245 if (!new)
1246 goto out;
1247 block = new;
1248 }
1249
1250 return block;
1251
1252 carp:
1253 if (print_bad_edid) {
1254 dev_warn(connector->dev->dev, "%s: EDID block %d invalid.\n",
1255 connector->name, j);
1256 }
1257 connector->bad_edid_counter++;
1258
1259 out:
1260 kfree(block);
1261 return NULL;
1262 }
1263
1264 /**
1265 * drm_probe_ddc() - probe DDC presence
1266 * @adapter: I2C adapter to probe
1267 *
1268 * Return: True on success, false on failure.
1269 */
1270 bool
drm_probe_ddc(struct i2c_adapter * adapter)1271 drm_probe_ddc(struct i2c_adapter *adapter)
1272 {
1273 unsigned char out;
1274
1275 return (drm_do_probe_ddc_edid(adapter, &out, 0, 1) == 0);
1276 }
1277 EXPORT_SYMBOL(drm_probe_ddc);
1278
1279 /**
1280 * drm_get_edid - get EDID data, if available
1281 * @connector: connector we're probing
1282 * @adapter: I2C adapter to use for DDC
1283 *
1284 * Poke the given I2C channel to grab EDID data if possible. If found,
1285 * attach it to the connector.
1286 *
1287 * Return: Pointer to valid EDID or NULL if we couldn't find any.
1288 */
drm_get_edid(struct drm_connector * connector,struct i2c_adapter * adapter)1289 struct edid *drm_get_edid(struct drm_connector *connector,
1290 struct i2c_adapter *adapter)
1291 {
1292 struct edid *edid = NULL;
1293
1294 if (drm_probe_ddc(adapter))
1295 edid = (struct edid *)drm_do_get_edid(connector, adapter);
1296
1297 return edid;
1298 }
1299 EXPORT_SYMBOL(drm_get_edid);
1300
1301 /**
1302 * drm_edid_duplicate - duplicate an EDID and the extensions
1303 * @edid: EDID to duplicate
1304 *
1305 * Return: Pointer to duplicated EDID or NULL on allocation failure.
1306 */
drm_edid_duplicate(const struct edid * edid)1307 struct edid *drm_edid_duplicate(const struct edid *edid)
1308 {
1309 return kmemdup(edid, (edid->extensions + 1) * EDID_LENGTH, GFP_KERNEL);
1310 }
1311 EXPORT_SYMBOL(drm_edid_duplicate);
1312
1313 /*** EDID parsing ***/
1314
1315 /**
1316 * edid_vendor - match a string against EDID's obfuscated vendor field
1317 * @edid: EDID to match
1318 * @vendor: vendor string
1319 *
1320 * Returns true if @vendor is in @edid, false otherwise
1321 */
edid_vendor(struct edid * edid,char * vendor)1322 static bool edid_vendor(struct edid *edid, char *vendor)
1323 {
1324 char edid_vendor[3];
1325
1326 edid_vendor[0] = ((edid->mfg_id[0] & 0x7c) >> 2) + '@';
1327 edid_vendor[1] = (((edid->mfg_id[0] & 0x3) << 3) |
1328 ((edid->mfg_id[1] & 0xe0) >> 5)) + '@';
1329 edid_vendor[2] = (edid->mfg_id[1] & 0x1f) + '@';
1330
1331 return !strncmp(edid_vendor, vendor, 3);
1332 }
1333
1334 /**
1335 * edid_get_quirks - return quirk flags for a given EDID
1336 * @edid: EDID to process
1337 *
1338 * This tells subsequent routines what fixes they need to apply.
1339 */
edid_get_quirks(struct edid * edid)1340 static u32 edid_get_quirks(struct edid *edid)
1341 {
1342 struct edid_quirk *quirk;
1343 int i;
1344
1345 for (i = 0; i < ARRAY_SIZE(edid_quirk_list); i++) {
1346 quirk = &edid_quirk_list[i];
1347
1348 if (edid_vendor(edid, quirk->vendor) &&
1349 (EDID_PRODUCT_ID(edid) == quirk->product_id))
1350 return quirk->quirks;
1351 }
1352
1353 return 0;
1354 }
1355
1356 #define MODE_SIZE(m) ((m)->hdisplay * (m)->vdisplay)
1357 #define MODE_REFRESH_DIFF(c,t) (abs((c) - (t)))
1358
1359 /**
1360 * edid_fixup_preferred - set preferred modes based on quirk list
1361 * @connector: has mode list to fix up
1362 * @quirks: quirks list
1363 *
1364 * Walk the mode list for @connector, clearing the preferred status
1365 * on existing modes and setting it anew for the right mode ala @quirks.
1366 */
edid_fixup_preferred(struct drm_connector * connector,u32 quirks)1367 static void edid_fixup_preferred(struct drm_connector *connector,
1368 u32 quirks)
1369 {
1370 struct drm_display_mode *t, *cur_mode, *preferred_mode;
1371 int target_refresh = 0;
1372 int cur_vrefresh, preferred_vrefresh;
1373
1374 if (list_empty(&connector->probed_modes))
1375 return;
1376
1377 if (quirks & EDID_QUIRK_PREFER_LARGE_60)
1378 target_refresh = 60;
1379 if (quirks & EDID_QUIRK_PREFER_LARGE_75)
1380 target_refresh = 75;
1381
1382 preferred_mode = list_first_entry(&connector->probed_modes,
1383 struct drm_display_mode, head);
1384
1385 list_for_each_entry_safe(cur_mode, t, &connector->probed_modes, head) {
1386 cur_mode->type &= ~DRM_MODE_TYPE_PREFERRED;
1387
1388 if (cur_mode == preferred_mode)
1389 continue;
1390
1391 /* Largest mode is preferred */
1392 if (MODE_SIZE(cur_mode) > MODE_SIZE(preferred_mode))
1393 preferred_mode = cur_mode;
1394
1395 cur_vrefresh = cur_mode->vrefresh ?
1396 cur_mode->vrefresh : drm_mode_vrefresh(cur_mode);
1397 preferred_vrefresh = preferred_mode->vrefresh ?
1398 preferred_mode->vrefresh : drm_mode_vrefresh(preferred_mode);
1399 /* At a given size, try to get closest to target refresh */
1400 if ((MODE_SIZE(cur_mode) == MODE_SIZE(preferred_mode)) &&
1401 MODE_REFRESH_DIFF(cur_vrefresh, target_refresh) <
1402 MODE_REFRESH_DIFF(preferred_vrefresh, target_refresh)) {
1403 preferred_mode = cur_mode;
1404 }
1405 }
1406
1407 preferred_mode->type |= DRM_MODE_TYPE_PREFERRED;
1408 }
1409
1410 static bool
mode_is_rb(const struct drm_display_mode * mode)1411 mode_is_rb(const struct drm_display_mode *mode)
1412 {
1413 return (mode->htotal - mode->hdisplay == 160) &&
1414 (mode->hsync_end - mode->hdisplay == 80) &&
1415 (mode->hsync_end - mode->hsync_start == 32) &&
1416 (mode->vsync_start - mode->vdisplay == 3);
1417 }
1418
1419 /*
1420 * drm_mode_find_dmt - Create a copy of a mode if present in DMT
1421 * @dev: Device to duplicate against
1422 * @hsize: Mode width
1423 * @vsize: Mode height
1424 * @fresh: Mode refresh rate
1425 * @rb: Mode reduced-blanking-ness
1426 *
1427 * Walk the DMT mode list looking for a match for the given parameters.
1428 *
1429 * Return: A newly allocated copy of the mode, or NULL if not found.
1430 */
drm_mode_find_dmt(struct drm_device * dev,int hsize,int vsize,int fresh,bool rb)1431 struct drm_display_mode *drm_mode_find_dmt(struct drm_device *dev,
1432 int hsize, int vsize, int fresh,
1433 bool rb)
1434 {
1435 int i;
1436
1437 for (i = 0; i < ARRAY_SIZE(drm_dmt_modes); i++) {
1438 const struct drm_display_mode *ptr = &drm_dmt_modes[i];
1439 if (hsize != ptr->hdisplay)
1440 continue;
1441 if (vsize != ptr->vdisplay)
1442 continue;
1443 if (fresh != drm_mode_vrefresh(ptr))
1444 continue;
1445 if (rb != mode_is_rb(ptr))
1446 continue;
1447
1448 return drm_mode_duplicate(dev, ptr);
1449 }
1450
1451 return NULL;
1452 }
1453 EXPORT_SYMBOL(drm_mode_find_dmt);
1454
1455 typedef void detailed_cb(struct detailed_timing *timing, void *closure);
1456
1457 static void
cea_for_each_detailed_block(u8 * ext,detailed_cb * cb,void * closure)1458 cea_for_each_detailed_block(u8 *ext, detailed_cb *cb, void *closure)
1459 {
1460 int i, n = 0;
1461 u8 d = ext[0x02];
1462 u8 *det_base = ext + d;
1463
1464 n = (127 - d) / 18;
1465 for (i = 0; i < n; i++)
1466 cb((struct detailed_timing *)(det_base + 18 * i), closure);
1467 }
1468
1469 static void
vtb_for_each_detailed_block(u8 * ext,detailed_cb * cb,void * closure)1470 vtb_for_each_detailed_block(u8 *ext, detailed_cb *cb, void *closure)
1471 {
1472 unsigned int i, n = min((int)ext[0x02], 6);
1473 u8 *det_base = ext + 5;
1474
1475 if (ext[0x01] != 1)
1476 return; /* unknown version */
1477
1478 for (i = 0; i < n; i++)
1479 cb((struct detailed_timing *)(det_base + 18 * i), closure);
1480 }
1481
1482 static void
drm_for_each_detailed_block(u8 * raw_edid,detailed_cb * cb,void * closure)1483 drm_for_each_detailed_block(u8 *raw_edid, detailed_cb *cb, void *closure)
1484 {
1485 int i;
1486 struct edid *edid = (struct edid *)raw_edid;
1487
1488 if (edid == NULL)
1489 return;
1490
1491 for (i = 0; i < EDID_DETAILED_TIMINGS; i++)
1492 cb(&(edid->detailed_timings[i]), closure);
1493
1494 for (i = 1; i <= raw_edid[0x7e]; i++) {
1495 u8 *ext = raw_edid + (i * EDID_LENGTH);
1496 switch (*ext) {
1497 case CEA_EXT:
1498 cea_for_each_detailed_block(ext, cb, closure);
1499 break;
1500 case VTB_EXT:
1501 vtb_for_each_detailed_block(ext, cb, closure);
1502 break;
1503 default:
1504 break;
1505 }
1506 }
1507 }
1508
1509 static void
is_rb(struct detailed_timing * t,void * data)1510 is_rb(struct detailed_timing *t, void *data)
1511 {
1512 u8 *r = (u8 *)t;
1513 if (r[3] == EDID_DETAIL_MONITOR_RANGE)
1514 if (r[15] & 0x10)
1515 *(bool *)data = true;
1516 }
1517
1518 /* EDID 1.4 defines this explicitly. For EDID 1.3, we guess, badly. */
1519 static bool
drm_monitor_supports_rb(struct edid * edid)1520 drm_monitor_supports_rb(struct edid *edid)
1521 {
1522 if (edid->revision >= 4) {
1523 bool ret = false;
1524 drm_for_each_detailed_block((u8 *)edid, is_rb, &ret);
1525 return ret;
1526 }
1527
1528 return ((edid->input & DRM_EDID_INPUT_DIGITAL) != 0);
1529 }
1530
1531 static void
find_gtf2(struct detailed_timing * t,void * data)1532 find_gtf2(struct detailed_timing *t, void *data)
1533 {
1534 u8 *r = (u8 *)t;
1535 if (r[3] == EDID_DETAIL_MONITOR_RANGE && r[10] == 0x02)
1536 *(u8 **)data = r;
1537 }
1538
1539 /* Secondary GTF curve kicks in above some break frequency */
1540 static int
drm_gtf2_hbreak(struct edid * edid)1541 drm_gtf2_hbreak(struct edid *edid)
1542 {
1543 u8 *r = NULL;
1544 drm_for_each_detailed_block((u8 *)edid, find_gtf2, &r);
1545 return r ? (r[12] * 2) : 0;
1546 }
1547
1548 static int
drm_gtf2_2c(struct edid * edid)1549 drm_gtf2_2c(struct edid *edid)
1550 {
1551 u8 *r = NULL;
1552 drm_for_each_detailed_block((u8 *)edid, find_gtf2, &r);
1553 return r ? r[13] : 0;
1554 }
1555
1556 static int
drm_gtf2_m(struct edid * edid)1557 drm_gtf2_m(struct edid *edid)
1558 {
1559 u8 *r = NULL;
1560 drm_for_each_detailed_block((u8 *)edid, find_gtf2, &r);
1561 return r ? (r[15] << 8) + r[14] : 0;
1562 }
1563
1564 static int
drm_gtf2_k(struct edid * edid)1565 drm_gtf2_k(struct edid *edid)
1566 {
1567 u8 *r = NULL;
1568 drm_for_each_detailed_block((u8 *)edid, find_gtf2, &r);
1569 return r ? r[16] : 0;
1570 }
1571
1572 static int
drm_gtf2_2j(struct edid * edid)1573 drm_gtf2_2j(struct edid *edid)
1574 {
1575 u8 *r = NULL;
1576 drm_for_each_detailed_block((u8 *)edid, find_gtf2, &r);
1577 return r ? r[17] : 0;
1578 }
1579
1580 /**
1581 * standard_timing_level - get std. timing level(CVT/GTF/DMT)
1582 * @edid: EDID block to scan
1583 */
standard_timing_level(struct edid * edid)1584 static int standard_timing_level(struct edid *edid)
1585 {
1586 if (edid->revision >= 2) {
1587 if (edid->revision >= 4 && (edid->features & DRM_EDID_FEATURE_DEFAULT_GTF))
1588 return LEVEL_CVT;
1589 if (drm_gtf2_hbreak(edid))
1590 return LEVEL_GTF2;
1591 return LEVEL_GTF;
1592 }
1593 return LEVEL_DMT;
1594 }
1595
1596 /*
1597 * 0 is reserved. The spec says 0x01 fill for unused timings. Some old
1598 * monitors fill with ascii space (0x20) instead.
1599 */
1600 static int
bad_std_timing(u8 a,u8 b)1601 bad_std_timing(u8 a, u8 b)
1602 {
1603 return (a == 0x00 && b == 0x00) ||
1604 (a == 0x01 && b == 0x01) ||
1605 (a == 0x20 && b == 0x20);
1606 }
1607
1608 /**
1609 * drm_mode_std - convert standard mode info (width, height, refresh) into mode
1610 * @connector: connector of for the EDID block
1611 * @edid: EDID block to scan
1612 * @t: standard timing params
1613 *
1614 * Take the standard timing params (in this case width, aspect, and refresh)
1615 * and convert them into a real mode using CVT/GTF/DMT.
1616 */
1617 static struct drm_display_mode *
drm_mode_std(struct drm_connector * connector,struct edid * edid,struct std_timing * t)1618 drm_mode_std(struct drm_connector *connector, struct edid *edid,
1619 struct std_timing *t)
1620 {
1621 struct drm_device *dev = connector->dev;
1622 struct drm_display_mode *m, *mode = NULL;
1623 int hsize, vsize;
1624 int vrefresh_rate;
1625 unsigned aspect_ratio = (t->vfreq_aspect & EDID_TIMING_ASPECT_MASK)
1626 >> EDID_TIMING_ASPECT_SHIFT;
1627 unsigned vfreq = (t->vfreq_aspect & EDID_TIMING_VFREQ_MASK)
1628 >> EDID_TIMING_VFREQ_SHIFT;
1629 int timing_level = standard_timing_level(edid);
1630
1631 if (bad_std_timing(t->hsize, t->vfreq_aspect))
1632 return NULL;
1633
1634 /* According to the EDID spec, the hdisplay = hsize * 8 + 248 */
1635 hsize = t->hsize * 8 + 248;
1636 /* vrefresh_rate = vfreq + 60 */
1637 vrefresh_rate = vfreq + 60;
1638 /* the vdisplay is calculated based on the aspect ratio */
1639 if (aspect_ratio == 0) {
1640 if (edid->revision < 3)
1641 vsize = hsize;
1642 else
1643 vsize = (hsize * 10) / 16;
1644 } else if (aspect_ratio == 1)
1645 vsize = (hsize * 3) / 4;
1646 else if (aspect_ratio == 2)
1647 vsize = (hsize * 4) / 5;
1648 else
1649 vsize = (hsize * 9) / 16;
1650
1651 /* HDTV hack, part 1 */
1652 if (vrefresh_rate == 60 &&
1653 ((hsize == 1360 && vsize == 765) ||
1654 (hsize == 1368 && vsize == 769))) {
1655 hsize = 1366;
1656 vsize = 768;
1657 }
1658
1659 /*
1660 * If this connector already has a mode for this size and refresh
1661 * rate (because it came from detailed or CVT info), use that
1662 * instead. This way we don't have to guess at interlace or
1663 * reduced blanking.
1664 */
1665 list_for_each_entry(m, &connector->probed_modes, head)
1666 if (m->hdisplay == hsize && m->vdisplay == vsize &&
1667 drm_mode_vrefresh(m) == vrefresh_rate)
1668 return NULL;
1669
1670 /* HDTV hack, part 2 */
1671 if (hsize == 1366 && vsize == 768 && vrefresh_rate == 60) {
1672 mode = drm_cvt_mode(dev, 1366, 768, vrefresh_rate, 0, 0,
1673 false);
1674 mode->hdisplay = 1366;
1675 mode->hsync_start = mode->hsync_start - 1;
1676 mode->hsync_end = mode->hsync_end - 1;
1677 return mode;
1678 }
1679
1680 /* check whether it can be found in default mode table */
1681 if (drm_monitor_supports_rb(edid)) {
1682 mode = drm_mode_find_dmt(dev, hsize, vsize, vrefresh_rate,
1683 true);
1684 if (mode)
1685 return mode;
1686 }
1687 mode = drm_mode_find_dmt(dev, hsize, vsize, vrefresh_rate, false);
1688 if (mode)
1689 return mode;
1690
1691 /* okay, generate it */
1692 switch (timing_level) {
1693 case LEVEL_DMT:
1694 break;
1695 case LEVEL_GTF:
1696 mode = drm_gtf_mode(dev, hsize, vsize, vrefresh_rate, 0, 0);
1697 break;
1698 case LEVEL_GTF2:
1699 /*
1700 * This is potentially wrong if there's ever a monitor with
1701 * more than one ranges section, each claiming a different
1702 * secondary GTF curve. Please don't do that.
1703 */
1704 mode = drm_gtf_mode(dev, hsize, vsize, vrefresh_rate, 0, 0);
1705 if (!mode)
1706 return NULL;
1707 if (drm_mode_hsync(mode) > drm_gtf2_hbreak(edid)) {
1708 drm_mode_destroy(dev, mode);
1709 mode = drm_gtf_mode_complex(dev, hsize, vsize,
1710 vrefresh_rate, 0, 0,
1711 drm_gtf2_m(edid),
1712 drm_gtf2_2c(edid),
1713 drm_gtf2_k(edid),
1714 drm_gtf2_2j(edid));
1715 }
1716 break;
1717 case LEVEL_CVT:
1718 mode = drm_cvt_mode(dev, hsize, vsize, vrefresh_rate, 0, 0,
1719 false);
1720 break;
1721 }
1722 return mode;
1723 }
1724
1725 /*
1726 * EDID is delightfully ambiguous about how interlaced modes are to be
1727 * encoded. Our internal representation is of frame height, but some
1728 * HDTV detailed timings are encoded as field height.
1729 *
1730 * The format list here is from CEA, in frame size. Technically we
1731 * should be checking refresh rate too. Whatever.
1732 */
1733 static void
drm_mode_do_interlace_quirk(struct drm_display_mode * mode,struct detailed_pixel_timing * pt)1734 drm_mode_do_interlace_quirk(struct drm_display_mode *mode,
1735 struct detailed_pixel_timing *pt)
1736 {
1737 int i;
1738 static const struct {
1739 int w, h;
1740 } cea_interlaced[] = {
1741 { 1920, 1080 },
1742 { 720, 480 },
1743 { 1440, 480 },
1744 { 2880, 480 },
1745 { 720, 576 },
1746 { 1440, 576 },
1747 { 2880, 576 },
1748 };
1749
1750 if (!(pt->misc & DRM_EDID_PT_INTERLACED))
1751 return;
1752
1753 for (i = 0; i < ARRAY_SIZE(cea_interlaced); i++) {
1754 if ((mode->hdisplay == cea_interlaced[i].w) &&
1755 (mode->vdisplay == cea_interlaced[i].h / 2)) {
1756 mode->vdisplay *= 2;
1757 mode->vsync_start *= 2;
1758 mode->vsync_end *= 2;
1759 mode->vtotal *= 2;
1760 mode->vtotal |= 1;
1761 }
1762 }
1763
1764 mode->flags |= DRM_MODE_FLAG_INTERLACE;
1765 }
1766
1767 /**
1768 * drm_mode_detailed - create a new mode from an EDID detailed timing section
1769 * @dev: DRM device (needed to create new mode)
1770 * @edid: EDID block
1771 * @timing: EDID detailed timing info
1772 * @quirks: quirks to apply
1773 *
1774 * An EDID detailed timing block contains enough info for us to create and
1775 * return a new struct drm_display_mode.
1776 */
drm_mode_detailed(struct drm_device * dev,struct edid * edid,struct detailed_timing * timing,u32 quirks)1777 static struct drm_display_mode *drm_mode_detailed(struct drm_device *dev,
1778 struct edid *edid,
1779 struct detailed_timing *timing,
1780 u32 quirks)
1781 {
1782 struct drm_display_mode *mode;
1783 struct detailed_pixel_timing *pt = &timing->data.pixel_data;
1784 unsigned hactive = (pt->hactive_hblank_hi & 0xf0) << 4 | pt->hactive_lo;
1785 unsigned vactive = (pt->vactive_vblank_hi & 0xf0) << 4 | pt->vactive_lo;
1786 unsigned hblank = (pt->hactive_hblank_hi & 0xf) << 8 | pt->hblank_lo;
1787 unsigned vblank = (pt->vactive_vblank_hi & 0xf) << 8 | pt->vblank_lo;
1788 unsigned hsync_offset = (pt->hsync_vsync_offset_pulse_width_hi & 0xc0) << 2 | pt->hsync_offset_lo;
1789 unsigned hsync_pulse_width = (pt->hsync_vsync_offset_pulse_width_hi & 0x30) << 4 | pt->hsync_pulse_width_lo;
1790 unsigned vsync_offset = (pt->hsync_vsync_offset_pulse_width_hi & 0xc) << 2 | pt->vsync_offset_pulse_width_lo >> 4;
1791 unsigned vsync_pulse_width = (pt->hsync_vsync_offset_pulse_width_hi & 0x3) << 4 | (pt->vsync_offset_pulse_width_lo & 0xf);
1792
1793 /* ignore tiny modes */
1794 if (hactive < 64 || vactive < 64)
1795 return NULL;
1796
1797 if (pt->misc & DRM_EDID_PT_STEREO) {
1798 DRM_DEBUG_KMS("stereo mode not supported\n");
1799 return NULL;
1800 }
1801 if (!(pt->misc & DRM_EDID_PT_SEPARATE_SYNC)) {
1802 DRM_DEBUG_KMS("composite sync not supported\n");
1803 }
1804
1805 /* it is incorrect if hsync/vsync width is zero */
1806 if (!hsync_pulse_width || !vsync_pulse_width) {
1807 DRM_DEBUG_KMS("Incorrect Detailed timing. "
1808 "Wrong Hsync/Vsync pulse width\n");
1809 return NULL;
1810 }
1811
1812 if (quirks & EDID_QUIRK_FORCE_REDUCED_BLANKING) {
1813 mode = drm_cvt_mode(dev, hactive, vactive, 60, true, false, false);
1814 if (!mode)
1815 return NULL;
1816
1817 goto set_size;
1818 }
1819
1820 mode = drm_mode_create(dev);
1821 if (!mode)
1822 return NULL;
1823
1824 if (quirks & EDID_QUIRK_135_CLOCK_TOO_HIGH)
1825 timing->pixel_clock = cpu_to_le16(1088);
1826
1827 mode->clock = le16_to_cpu(timing->pixel_clock) * 10;
1828
1829 mode->hdisplay = hactive;
1830 mode->hsync_start = mode->hdisplay + hsync_offset;
1831 mode->hsync_end = mode->hsync_start + hsync_pulse_width;
1832 mode->htotal = mode->hdisplay + hblank;
1833
1834 mode->vdisplay = vactive;
1835 mode->vsync_start = mode->vdisplay + vsync_offset;
1836 mode->vsync_end = mode->vsync_start + vsync_pulse_width;
1837 mode->vtotal = mode->vdisplay + vblank;
1838
1839 /* Some EDIDs have bogus h/vtotal values */
1840 if (mode->hsync_end > mode->htotal)
1841 mode->htotal = mode->hsync_end + 1;
1842 if (mode->vsync_end > mode->vtotal)
1843 mode->vtotal = mode->vsync_end + 1;
1844
1845 drm_mode_do_interlace_quirk(mode, pt);
1846
1847 if (quirks & EDID_QUIRK_DETAILED_SYNC_PP) {
1848 pt->misc |= DRM_EDID_PT_HSYNC_POSITIVE | DRM_EDID_PT_VSYNC_POSITIVE;
1849 }
1850
1851 mode->flags |= (pt->misc & DRM_EDID_PT_HSYNC_POSITIVE) ?
1852 DRM_MODE_FLAG_PHSYNC : DRM_MODE_FLAG_NHSYNC;
1853 mode->flags |= (pt->misc & DRM_EDID_PT_VSYNC_POSITIVE) ?
1854 DRM_MODE_FLAG_PVSYNC : DRM_MODE_FLAG_NVSYNC;
1855
1856 set_size:
1857 mode->width_mm = pt->width_mm_lo | (pt->width_height_mm_hi & 0xf0) << 4;
1858 mode->height_mm = pt->height_mm_lo | (pt->width_height_mm_hi & 0xf) << 8;
1859
1860 if (quirks & EDID_QUIRK_DETAILED_IN_CM) {
1861 mode->width_mm *= 10;
1862 mode->height_mm *= 10;
1863 }
1864
1865 if (quirks & EDID_QUIRK_DETAILED_USE_MAXIMUM_SIZE) {
1866 mode->width_mm = edid->width_cm * 10;
1867 mode->height_mm = edid->height_cm * 10;
1868 }
1869
1870 mode->type = DRM_MODE_TYPE_DRIVER;
1871 mode->vrefresh = drm_mode_vrefresh(mode);
1872 drm_mode_set_name(mode);
1873
1874 return mode;
1875 }
1876
1877 static bool
mode_in_hsync_range(const struct drm_display_mode * mode,struct edid * edid,u8 * t)1878 mode_in_hsync_range(const struct drm_display_mode *mode,
1879 struct edid *edid, u8 *t)
1880 {
1881 int hsync, hmin, hmax;
1882
1883 hmin = t[7];
1884 if (edid->revision >= 4)
1885 hmin += ((t[4] & 0x04) ? 255 : 0);
1886 hmax = t[8];
1887 if (edid->revision >= 4)
1888 hmax += ((t[4] & 0x08) ? 255 : 0);
1889 hsync = drm_mode_hsync(mode);
1890
1891 return (hsync <= hmax && hsync >= hmin);
1892 }
1893
1894 static bool
mode_in_vsync_range(const struct drm_display_mode * mode,struct edid * edid,u8 * t)1895 mode_in_vsync_range(const struct drm_display_mode *mode,
1896 struct edid *edid, u8 *t)
1897 {
1898 int vsync, vmin, vmax;
1899
1900 vmin = t[5];
1901 if (edid->revision >= 4)
1902 vmin += ((t[4] & 0x01) ? 255 : 0);
1903 vmax = t[6];
1904 if (edid->revision >= 4)
1905 vmax += ((t[4] & 0x02) ? 255 : 0);
1906 vsync = drm_mode_vrefresh(mode);
1907
1908 return (vsync <= vmax && vsync >= vmin);
1909 }
1910
1911 static u32
range_pixel_clock(struct edid * edid,u8 * t)1912 range_pixel_clock(struct edid *edid, u8 *t)
1913 {
1914 /* unspecified */
1915 if (t[9] == 0 || t[9] == 255)
1916 return 0;
1917
1918 /* 1.4 with CVT support gives us real precision, yay */
1919 if (edid->revision >= 4 && t[10] == 0x04)
1920 return (t[9] * 10000) - ((t[12] >> 2) * 250);
1921
1922 /* 1.3 is pathetic, so fuzz up a bit */
1923 return t[9] * 10000 + 5001;
1924 }
1925
1926 static bool
mode_in_range(const struct drm_display_mode * mode,struct edid * edid,struct detailed_timing * timing)1927 mode_in_range(const struct drm_display_mode *mode, struct edid *edid,
1928 struct detailed_timing *timing)
1929 {
1930 u32 max_clock;
1931 u8 *t = (u8 *)timing;
1932
1933 if (!mode_in_hsync_range(mode, edid, t))
1934 return false;
1935
1936 if (!mode_in_vsync_range(mode, edid, t))
1937 return false;
1938
1939 if ((max_clock = range_pixel_clock(edid, t)))
1940 if (mode->clock > max_clock)
1941 return false;
1942
1943 /* 1.4 max horizontal check */
1944 if (edid->revision >= 4 && t[10] == 0x04)
1945 if (t[13] && mode->hdisplay > 8 * (t[13] + (256 * (t[12]&0x3))))
1946 return false;
1947
1948 if (mode_is_rb(mode) && !drm_monitor_supports_rb(edid))
1949 return false;
1950
1951 return true;
1952 }
1953
valid_inferred_mode(const struct drm_connector * connector,const struct drm_display_mode * mode)1954 static bool valid_inferred_mode(const struct drm_connector *connector,
1955 const struct drm_display_mode *mode)
1956 {
1957 struct drm_display_mode *m;
1958 bool ok = false;
1959
1960 list_for_each_entry(m, &connector->probed_modes, head) {
1961 if (mode->hdisplay == m->hdisplay &&
1962 mode->vdisplay == m->vdisplay &&
1963 drm_mode_vrefresh(mode) == drm_mode_vrefresh(m))
1964 return false; /* duplicated */
1965 if (mode->hdisplay <= m->hdisplay &&
1966 mode->vdisplay <= m->vdisplay)
1967 ok = true;
1968 }
1969 return ok;
1970 }
1971
1972 static int
drm_dmt_modes_for_range(struct drm_connector * connector,struct edid * edid,struct detailed_timing * timing)1973 drm_dmt_modes_for_range(struct drm_connector *connector, struct edid *edid,
1974 struct detailed_timing *timing)
1975 {
1976 int i, modes = 0;
1977 struct drm_display_mode *newmode;
1978 struct drm_device *dev = connector->dev;
1979
1980 for (i = 0; i < ARRAY_SIZE(drm_dmt_modes); i++) {
1981 if (mode_in_range(drm_dmt_modes + i, edid, timing) &&
1982 valid_inferred_mode(connector, drm_dmt_modes + i)) {
1983 newmode = drm_mode_duplicate(dev, &drm_dmt_modes[i]);
1984 if (newmode) {
1985 drm_mode_probed_add(connector, newmode);
1986 modes++;
1987 }
1988 }
1989 }
1990
1991 return modes;
1992 }
1993
1994 /* fix up 1366x768 mode from 1368x768;
1995 * GFT/CVT can't express 1366 width which isn't dividable by 8
1996 */
fixup_mode_1366x768(struct drm_display_mode * mode)1997 static void fixup_mode_1366x768(struct drm_display_mode *mode)
1998 {
1999 if (mode->hdisplay == 1368 && mode->vdisplay == 768) {
2000 mode->hdisplay = 1366;
2001 mode->hsync_start--;
2002 mode->hsync_end--;
2003 drm_mode_set_name(mode);
2004 }
2005 }
2006
2007 static int
drm_gtf_modes_for_range(struct drm_connector * connector,struct edid * edid,struct detailed_timing * timing)2008 drm_gtf_modes_for_range(struct drm_connector *connector, struct edid *edid,
2009 struct detailed_timing *timing)
2010 {
2011 int i, modes = 0;
2012 struct drm_display_mode *newmode;
2013 struct drm_device *dev = connector->dev;
2014
2015 for (i = 0; i < ARRAY_SIZE(extra_modes); i++) {
2016 const struct minimode *m = &extra_modes[i];
2017 newmode = drm_gtf_mode(dev, m->w, m->h, m->r, 0, 0);
2018 if (!newmode)
2019 return modes;
2020
2021 fixup_mode_1366x768(newmode);
2022 if (!mode_in_range(newmode, edid, timing) ||
2023 !valid_inferred_mode(connector, newmode)) {
2024 drm_mode_destroy(dev, newmode);
2025 continue;
2026 }
2027
2028 drm_mode_probed_add(connector, newmode);
2029 modes++;
2030 }
2031
2032 return modes;
2033 }
2034
2035 static int
drm_cvt_modes_for_range(struct drm_connector * connector,struct edid * edid,struct detailed_timing * timing)2036 drm_cvt_modes_for_range(struct drm_connector *connector, struct edid *edid,
2037 struct detailed_timing *timing)
2038 {
2039 int i, modes = 0;
2040 struct drm_display_mode *newmode;
2041 struct drm_device *dev = connector->dev;
2042 bool rb = drm_monitor_supports_rb(edid);
2043
2044 for (i = 0; i < ARRAY_SIZE(extra_modes); i++) {
2045 const struct minimode *m = &extra_modes[i];
2046 newmode = drm_cvt_mode(dev, m->w, m->h, m->r, rb, 0, 0);
2047 if (!newmode)
2048 return modes;
2049
2050 fixup_mode_1366x768(newmode);
2051 if (!mode_in_range(newmode, edid, timing) ||
2052 !valid_inferred_mode(connector, newmode)) {
2053 drm_mode_destroy(dev, newmode);
2054 continue;
2055 }
2056
2057 drm_mode_probed_add(connector, newmode);
2058 modes++;
2059 }
2060
2061 return modes;
2062 }
2063
2064 static void
do_inferred_modes(struct detailed_timing * timing,void * c)2065 do_inferred_modes(struct detailed_timing *timing, void *c)
2066 {
2067 struct detailed_mode_closure *closure = c;
2068 struct detailed_non_pixel *data = &timing->data.other_data;
2069 struct detailed_data_monitor_range *range = &data->data.range;
2070
2071 if (data->type != EDID_DETAIL_MONITOR_RANGE)
2072 return;
2073
2074 closure->modes += drm_dmt_modes_for_range(closure->connector,
2075 closure->edid,
2076 timing);
2077
2078 if (!version_greater(closure->edid, 1, 1))
2079 return; /* GTF not defined yet */
2080
2081 switch (range->flags) {
2082 case 0x02: /* secondary gtf, XXX could do more */
2083 case 0x00: /* default gtf */
2084 closure->modes += drm_gtf_modes_for_range(closure->connector,
2085 closure->edid,
2086 timing);
2087 break;
2088 case 0x04: /* cvt, only in 1.4+ */
2089 if (!version_greater(closure->edid, 1, 3))
2090 break;
2091
2092 closure->modes += drm_cvt_modes_for_range(closure->connector,
2093 closure->edid,
2094 timing);
2095 break;
2096 case 0x01: /* just the ranges, no formula */
2097 default:
2098 break;
2099 }
2100 }
2101
2102 static int
add_inferred_modes(struct drm_connector * connector,struct edid * edid)2103 add_inferred_modes(struct drm_connector *connector, struct edid *edid)
2104 {
2105 struct detailed_mode_closure closure = {
2106 .connector = connector,
2107 .edid = edid,
2108 };
2109
2110 if (version_greater(edid, 1, 0))
2111 drm_for_each_detailed_block((u8 *)edid, do_inferred_modes,
2112 &closure);
2113
2114 return closure.modes;
2115 }
2116
2117 static int
drm_est3_modes(struct drm_connector * connector,struct detailed_timing * timing)2118 drm_est3_modes(struct drm_connector *connector, struct detailed_timing *timing)
2119 {
2120 int i, j, m, modes = 0;
2121 struct drm_display_mode *mode;
2122 u8 *est = ((u8 *)timing) + 5;
2123
2124 for (i = 0; i < 6; i++) {
2125 for (j = 7; j >= 0; j--) {
2126 m = (i * 8) + (7 - j);
2127 if (m >= ARRAY_SIZE(est3_modes))
2128 break;
2129 if (est[i] & (1 << j)) {
2130 mode = drm_mode_find_dmt(connector->dev,
2131 est3_modes[m].w,
2132 est3_modes[m].h,
2133 est3_modes[m].r,
2134 est3_modes[m].rb);
2135 if (mode) {
2136 drm_mode_probed_add(connector, mode);
2137 modes++;
2138 }
2139 }
2140 }
2141 }
2142
2143 return modes;
2144 }
2145
2146 static void
do_established_modes(struct detailed_timing * timing,void * c)2147 do_established_modes(struct detailed_timing *timing, void *c)
2148 {
2149 struct detailed_mode_closure *closure = c;
2150 struct detailed_non_pixel *data = &timing->data.other_data;
2151
2152 if (data->type == EDID_DETAIL_EST_TIMINGS)
2153 closure->modes += drm_est3_modes(closure->connector, timing);
2154 }
2155
2156 /**
2157 * add_established_modes - get est. modes from EDID and add them
2158 * @connector: connector to add mode(s) to
2159 * @edid: EDID block to scan
2160 *
2161 * Each EDID block contains a bitmap of the supported "established modes" list
2162 * (defined above). Tease them out and add them to the global modes list.
2163 */
2164 static int
add_established_modes(struct drm_connector * connector,struct edid * edid)2165 add_established_modes(struct drm_connector *connector, struct edid *edid)
2166 {
2167 struct drm_device *dev = connector->dev;
2168 unsigned long est_bits = edid->established_timings.t1 |
2169 (edid->established_timings.t2 << 8) |
2170 ((edid->established_timings.mfg_rsvd & 0x80) << 9);
2171 int i, modes = 0;
2172 struct detailed_mode_closure closure = {
2173 .connector = connector,
2174 .edid = edid,
2175 };
2176
2177 for (i = 0; i <= EDID_EST_TIMINGS; i++) {
2178 if (est_bits & (1<<i)) {
2179 struct drm_display_mode *newmode;
2180 newmode = drm_mode_duplicate(dev, &edid_est_modes[i]);
2181 if (newmode) {
2182 drm_mode_probed_add(connector, newmode);
2183 modes++;
2184 }
2185 }
2186 }
2187
2188 if (version_greater(edid, 1, 0))
2189 drm_for_each_detailed_block((u8 *)edid,
2190 do_established_modes, &closure);
2191
2192 return modes + closure.modes;
2193 }
2194
2195 static void
do_standard_modes(struct detailed_timing * timing,void * c)2196 do_standard_modes(struct detailed_timing *timing, void *c)
2197 {
2198 struct detailed_mode_closure *closure = c;
2199 struct detailed_non_pixel *data = &timing->data.other_data;
2200 struct drm_connector *connector = closure->connector;
2201 struct edid *edid = closure->edid;
2202
2203 if (data->type == EDID_DETAIL_STD_MODES) {
2204 int i;
2205 for (i = 0; i < 6; i++) {
2206 struct std_timing *std;
2207 struct drm_display_mode *newmode;
2208
2209 std = &data->data.timings[i];
2210 newmode = drm_mode_std(connector, edid, std);
2211 if (newmode) {
2212 drm_mode_probed_add(connector, newmode);
2213 closure->modes++;
2214 }
2215 }
2216 }
2217 }
2218
2219 /**
2220 * add_standard_modes - get std. modes from EDID and add them
2221 * @connector: connector to add mode(s) to
2222 * @edid: EDID block to scan
2223 *
2224 * Standard modes can be calculated using the appropriate standard (DMT,
2225 * GTF or CVT. Grab them from @edid and add them to the list.
2226 */
2227 static int
add_standard_modes(struct drm_connector * connector,struct edid * edid)2228 add_standard_modes(struct drm_connector *connector, struct edid *edid)
2229 {
2230 int i, modes = 0;
2231 struct detailed_mode_closure closure = {
2232 .connector = connector,
2233 .edid = edid,
2234 };
2235
2236 for (i = 0; i < EDID_STD_TIMINGS; i++) {
2237 struct drm_display_mode *newmode;
2238
2239 newmode = drm_mode_std(connector, edid,
2240 &edid->standard_timings[i]);
2241 if (newmode) {
2242 drm_mode_probed_add(connector, newmode);
2243 modes++;
2244 }
2245 }
2246
2247 if (version_greater(edid, 1, 0))
2248 drm_for_each_detailed_block((u8 *)edid, do_standard_modes,
2249 &closure);
2250
2251 /* XXX should also look for standard codes in VTB blocks */
2252
2253 return modes + closure.modes;
2254 }
2255
drm_cvt_modes(struct drm_connector * connector,struct detailed_timing * timing)2256 static int drm_cvt_modes(struct drm_connector *connector,
2257 struct detailed_timing *timing)
2258 {
2259 int i, j, modes = 0;
2260 struct drm_display_mode *newmode;
2261 struct drm_device *dev = connector->dev;
2262 struct cvt_timing *cvt;
2263 const int rates[] = { 60, 85, 75, 60, 50 };
2264 const u8 empty[3] = { 0, 0, 0 };
2265
2266 for (i = 0; i < 4; i++) {
2267 int uninitialized_var(width), height;
2268 cvt = &(timing->data.other_data.data.cvt[i]);
2269
2270 if (!memcmp(cvt->code, empty, 3))
2271 continue;
2272
2273 height = (cvt->code[0] + ((cvt->code[1] & 0xf0) << 4) + 1) * 2;
2274 switch (cvt->code[1] & 0x0c) {
2275 case 0x00:
2276 width = height * 4 / 3;
2277 break;
2278 case 0x04:
2279 width = height * 16 / 9;
2280 break;
2281 case 0x08:
2282 width = height * 16 / 10;
2283 break;
2284 case 0x0c:
2285 width = height * 15 / 9;
2286 break;
2287 }
2288
2289 for (j = 1; j < 5; j++) {
2290 if (cvt->code[2] & (1 << j)) {
2291 newmode = drm_cvt_mode(dev, width, height,
2292 rates[j], j == 0,
2293 false, false);
2294 if (newmode) {
2295 drm_mode_probed_add(connector, newmode);
2296 modes++;
2297 }
2298 }
2299 }
2300 }
2301
2302 return modes;
2303 }
2304
2305 static void
do_cvt_mode(struct detailed_timing * timing,void * c)2306 do_cvt_mode(struct detailed_timing *timing, void *c)
2307 {
2308 struct detailed_mode_closure *closure = c;
2309 struct detailed_non_pixel *data = &timing->data.other_data;
2310
2311 if (data->type == EDID_DETAIL_CVT_3BYTE)
2312 closure->modes += drm_cvt_modes(closure->connector, timing);
2313 }
2314
2315 static int
add_cvt_modes(struct drm_connector * connector,struct edid * edid)2316 add_cvt_modes(struct drm_connector *connector, struct edid *edid)
2317 {
2318 struct detailed_mode_closure closure = {
2319 .connector = connector,
2320 .edid = edid,
2321 };
2322
2323 if (version_greater(edid, 1, 2))
2324 drm_for_each_detailed_block((u8 *)edid, do_cvt_mode, &closure);
2325
2326 /* XXX should also look for CVT codes in VTB blocks */
2327
2328 return closure.modes;
2329 }
2330
2331 static void
do_detailed_mode(struct detailed_timing * timing,void * c)2332 do_detailed_mode(struct detailed_timing *timing, void *c)
2333 {
2334 struct detailed_mode_closure *closure = c;
2335 struct drm_display_mode *newmode;
2336
2337 if (timing->pixel_clock) {
2338 newmode = drm_mode_detailed(closure->connector->dev,
2339 closure->edid, timing,
2340 closure->quirks);
2341 if (!newmode)
2342 return;
2343
2344 if (closure->preferred)
2345 newmode->type |= DRM_MODE_TYPE_PREFERRED;
2346
2347 drm_mode_probed_add(closure->connector, newmode);
2348 closure->modes++;
2349 closure->preferred = 0;
2350 }
2351 }
2352
2353 /*
2354 * add_detailed_modes - Add modes from detailed timings
2355 * @connector: attached connector
2356 * @edid: EDID block to scan
2357 * @quirks: quirks to apply
2358 */
2359 static int
add_detailed_modes(struct drm_connector * connector,struct edid * edid,u32 quirks)2360 add_detailed_modes(struct drm_connector *connector, struct edid *edid,
2361 u32 quirks)
2362 {
2363 struct detailed_mode_closure closure = {
2364 .connector = connector,
2365 .edid = edid,
2366 .preferred = 1,
2367 .quirks = quirks,
2368 };
2369
2370 if (closure.preferred && !version_greater(edid, 1, 3))
2371 closure.preferred =
2372 (edid->features & DRM_EDID_FEATURE_PREFERRED_TIMING);
2373
2374 drm_for_each_detailed_block((u8 *)edid, do_detailed_mode, &closure);
2375
2376 return closure.modes;
2377 }
2378
2379 #define AUDIO_BLOCK 0x01
2380 #define VIDEO_BLOCK 0x02
2381 #define VENDOR_BLOCK 0x03
2382 #define SPEAKER_BLOCK 0x04
2383 #define VIDEO_CAPABILITY_BLOCK 0x07
2384 #define EDID_BASIC_AUDIO (1 << 6)
2385 #define EDID_CEA_YCRCB444 (1 << 5)
2386 #define EDID_CEA_YCRCB422 (1 << 4)
2387 #define EDID_CEA_VCDB_QS (1 << 6)
2388
2389 /*
2390 * Search EDID for CEA extension block.
2391 */
drm_find_cea_extension(struct edid * edid)2392 static u8 *drm_find_cea_extension(struct edid *edid)
2393 {
2394 u8 *edid_ext = NULL;
2395 int i;
2396
2397 /* No EDID or EDID extensions */
2398 if (edid == NULL || edid->extensions == 0)
2399 return NULL;
2400
2401 /* Find CEA extension */
2402 for (i = 0; i < edid->extensions; i++) {
2403 edid_ext = (u8 *)edid + EDID_LENGTH * (i + 1);
2404 if (edid_ext[0] == CEA_EXT)
2405 break;
2406 }
2407
2408 if (i == edid->extensions)
2409 return NULL;
2410
2411 return edid_ext;
2412 }
2413
2414 /*
2415 * Calculate the alternate clock for the CEA mode
2416 * (60Hz vs. 59.94Hz etc.)
2417 */
2418 static unsigned int
cea_mode_alternate_clock(const struct drm_display_mode * cea_mode)2419 cea_mode_alternate_clock(const struct drm_display_mode *cea_mode)
2420 {
2421 unsigned int clock = cea_mode->clock;
2422
2423 if (cea_mode->vrefresh % 6 != 0)
2424 return clock;
2425
2426 /*
2427 * edid_cea_modes contains the 59.94Hz
2428 * variant for 240 and 480 line modes,
2429 * and the 60Hz variant otherwise.
2430 */
2431 if (cea_mode->vdisplay == 240 || cea_mode->vdisplay == 480)
2432 clock = clock * 1001 / 1000;
2433 else
2434 clock = DIV_ROUND_UP(clock * 1000, 1001);
2435
2436 return clock;
2437 }
2438
2439 /**
2440 * drm_match_cea_mode - look for a CEA mode matching given mode
2441 * @to_match: display mode
2442 *
2443 * Return: The CEA Video ID (VIC) of the mode or 0 if it isn't a CEA-861
2444 * mode.
2445 */
drm_match_cea_mode(const struct drm_display_mode * to_match)2446 u8 drm_match_cea_mode(const struct drm_display_mode *to_match)
2447 {
2448 u8 mode;
2449
2450 if (!to_match->clock)
2451 return 0;
2452
2453 for (mode = 0; mode < ARRAY_SIZE(edid_cea_modes); mode++) {
2454 const struct drm_display_mode *cea_mode = &edid_cea_modes[mode];
2455 unsigned int clock1, clock2;
2456
2457 /* Check both 60Hz and 59.94Hz */
2458 clock1 = cea_mode->clock;
2459 clock2 = cea_mode_alternate_clock(cea_mode);
2460
2461 if ((KHZ2PICOS(to_match->clock) == KHZ2PICOS(clock1) ||
2462 KHZ2PICOS(to_match->clock) == KHZ2PICOS(clock2)) &&
2463 drm_mode_equal_no_clocks_no_stereo(to_match, cea_mode))
2464 return mode + 1;
2465 }
2466 return 0;
2467 }
2468 EXPORT_SYMBOL(drm_match_cea_mode);
2469
2470 /**
2471 * drm_get_cea_aspect_ratio - get the picture aspect ratio corresponding to
2472 * the input VIC from the CEA mode list
2473 * @video_code: ID given to each of the CEA modes
2474 *
2475 * Returns picture aspect ratio
2476 */
drm_get_cea_aspect_ratio(const u8 video_code)2477 enum hdmi_picture_aspect drm_get_cea_aspect_ratio(const u8 video_code)
2478 {
2479 /* return picture aspect ratio for video_code - 1 to access the
2480 * right array element
2481 */
2482 return edid_cea_modes[video_code-1].picture_aspect_ratio;
2483 }
2484 EXPORT_SYMBOL(drm_get_cea_aspect_ratio);
2485
2486 /*
2487 * Calculate the alternate clock for HDMI modes (those from the HDMI vendor
2488 * specific block).
2489 *
2490 * It's almost like cea_mode_alternate_clock(), we just need to add an
2491 * exception for the VIC 4 mode (4096x2160@24Hz): no alternate clock for this
2492 * one.
2493 */
2494 static unsigned int
hdmi_mode_alternate_clock(const struct drm_display_mode * hdmi_mode)2495 hdmi_mode_alternate_clock(const struct drm_display_mode *hdmi_mode)
2496 {
2497 if (hdmi_mode->vdisplay == 4096 && hdmi_mode->hdisplay == 2160)
2498 return hdmi_mode->clock;
2499
2500 return cea_mode_alternate_clock(hdmi_mode);
2501 }
2502
2503 /*
2504 * drm_match_hdmi_mode - look for a HDMI mode matching given mode
2505 * @to_match: display mode
2506 *
2507 * An HDMI mode is one defined in the HDMI vendor specific block.
2508 *
2509 * Returns the HDMI Video ID (VIC) of the mode or 0 if it isn't one.
2510 */
drm_match_hdmi_mode(const struct drm_display_mode * to_match)2511 static u8 drm_match_hdmi_mode(const struct drm_display_mode *to_match)
2512 {
2513 u8 mode;
2514
2515 if (!to_match->clock)
2516 return 0;
2517
2518 for (mode = 0; mode < ARRAY_SIZE(edid_4k_modes); mode++) {
2519 const struct drm_display_mode *hdmi_mode = &edid_4k_modes[mode];
2520 unsigned int clock1, clock2;
2521
2522 /* Make sure to also match alternate clocks */
2523 clock1 = hdmi_mode->clock;
2524 clock2 = hdmi_mode_alternate_clock(hdmi_mode);
2525
2526 if ((KHZ2PICOS(to_match->clock) == KHZ2PICOS(clock1) ||
2527 KHZ2PICOS(to_match->clock) == KHZ2PICOS(clock2)) &&
2528 drm_mode_equal_no_clocks_no_stereo(to_match, hdmi_mode))
2529 return mode + 1;
2530 }
2531 return 0;
2532 }
2533
2534 static int
add_alternate_cea_modes(struct drm_connector * connector,struct edid * edid)2535 add_alternate_cea_modes(struct drm_connector *connector, struct edid *edid)
2536 {
2537 struct drm_device *dev = connector->dev;
2538 struct drm_display_mode *mode, *tmp;
2539 LIST_HEAD(list);
2540 int modes = 0;
2541
2542 /* Don't add CEA modes if the CEA extension block is missing */
2543 if (!drm_find_cea_extension(edid))
2544 return 0;
2545
2546 /*
2547 * Go through all probed modes and create a new mode
2548 * with the alternate clock for certain CEA modes.
2549 */
2550 list_for_each_entry(mode, &connector->probed_modes, head) {
2551 const struct drm_display_mode *cea_mode = NULL;
2552 struct drm_display_mode *newmode;
2553 u8 mode_idx = drm_match_cea_mode(mode) - 1;
2554 unsigned int clock1, clock2;
2555
2556 if (mode_idx < ARRAY_SIZE(edid_cea_modes)) {
2557 cea_mode = &edid_cea_modes[mode_idx];
2558 clock2 = cea_mode_alternate_clock(cea_mode);
2559 } else {
2560 mode_idx = drm_match_hdmi_mode(mode) - 1;
2561 if (mode_idx < ARRAY_SIZE(edid_4k_modes)) {
2562 cea_mode = &edid_4k_modes[mode_idx];
2563 clock2 = hdmi_mode_alternate_clock(cea_mode);
2564 }
2565 }
2566
2567 if (!cea_mode)
2568 continue;
2569
2570 clock1 = cea_mode->clock;
2571
2572 if (clock1 == clock2)
2573 continue;
2574
2575 if (mode->clock != clock1 && mode->clock != clock2)
2576 continue;
2577
2578 newmode = drm_mode_duplicate(dev, cea_mode);
2579 if (!newmode)
2580 continue;
2581
2582 /* Carry over the stereo flags */
2583 newmode->flags |= mode->flags & DRM_MODE_FLAG_3D_MASK;
2584
2585 /*
2586 * The current mode could be either variant. Make
2587 * sure to pick the "other" clock for the new mode.
2588 */
2589 if (mode->clock != clock1)
2590 newmode->clock = clock1;
2591 else
2592 newmode->clock = clock2;
2593
2594 list_add_tail(&newmode->head, &list);
2595 }
2596
2597 list_for_each_entry_safe(mode, tmp, &list, head) {
2598 list_del(&mode->head);
2599 drm_mode_probed_add(connector, mode);
2600 modes++;
2601 }
2602
2603 return modes;
2604 }
2605
2606 static struct drm_display_mode *
drm_display_mode_from_vic_index(struct drm_connector * connector,const u8 * video_db,u8 video_len,u8 video_index)2607 drm_display_mode_from_vic_index(struct drm_connector *connector,
2608 const u8 *video_db, u8 video_len,
2609 u8 video_index)
2610 {
2611 struct drm_device *dev = connector->dev;
2612 struct drm_display_mode *newmode;
2613 u8 cea_mode;
2614
2615 if (video_db == NULL || video_index >= video_len)
2616 return NULL;
2617
2618 /* CEA modes are numbered 1..127 */
2619 cea_mode = (video_db[video_index] & 127) - 1;
2620 if (cea_mode >= ARRAY_SIZE(edid_cea_modes))
2621 return NULL;
2622
2623 newmode = drm_mode_duplicate(dev, &edid_cea_modes[cea_mode]);
2624 if (!newmode)
2625 return NULL;
2626
2627 newmode->vrefresh = 0;
2628
2629 return newmode;
2630 }
2631
2632 static int
do_cea_modes(struct drm_connector * connector,const u8 * db,u8 len)2633 do_cea_modes(struct drm_connector *connector, const u8 *db, u8 len)
2634 {
2635 int i, modes = 0;
2636
2637 for (i = 0; i < len; i++) {
2638 struct drm_display_mode *mode;
2639 mode = drm_display_mode_from_vic_index(connector, db, len, i);
2640 if (mode) {
2641 drm_mode_probed_add(connector, mode);
2642 modes++;
2643 }
2644 }
2645
2646 return modes;
2647 }
2648
2649 struct stereo_mandatory_mode {
2650 int width, height, vrefresh;
2651 unsigned int flags;
2652 };
2653
2654 static const struct stereo_mandatory_mode stereo_mandatory_modes[] = {
2655 { 1920, 1080, 24, DRM_MODE_FLAG_3D_TOP_AND_BOTTOM },
2656 { 1920, 1080, 24, DRM_MODE_FLAG_3D_FRAME_PACKING },
2657 { 1920, 1080, 50,
2658 DRM_MODE_FLAG_INTERLACE | DRM_MODE_FLAG_3D_SIDE_BY_SIDE_HALF },
2659 { 1920, 1080, 60,
2660 DRM_MODE_FLAG_INTERLACE | DRM_MODE_FLAG_3D_SIDE_BY_SIDE_HALF },
2661 { 1280, 720, 50, DRM_MODE_FLAG_3D_TOP_AND_BOTTOM },
2662 { 1280, 720, 50, DRM_MODE_FLAG_3D_FRAME_PACKING },
2663 { 1280, 720, 60, DRM_MODE_FLAG_3D_TOP_AND_BOTTOM },
2664 { 1280, 720, 60, DRM_MODE_FLAG_3D_FRAME_PACKING }
2665 };
2666
2667 static bool
stereo_match_mandatory(const struct drm_display_mode * mode,const struct stereo_mandatory_mode * stereo_mode)2668 stereo_match_mandatory(const struct drm_display_mode *mode,
2669 const struct stereo_mandatory_mode *stereo_mode)
2670 {
2671 unsigned int interlaced = mode->flags & DRM_MODE_FLAG_INTERLACE;
2672
2673 return mode->hdisplay == stereo_mode->width &&
2674 mode->vdisplay == stereo_mode->height &&
2675 interlaced == (stereo_mode->flags & DRM_MODE_FLAG_INTERLACE) &&
2676 drm_mode_vrefresh(mode) == stereo_mode->vrefresh;
2677 }
2678
add_hdmi_mandatory_stereo_modes(struct drm_connector * connector)2679 static int add_hdmi_mandatory_stereo_modes(struct drm_connector *connector)
2680 {
2681 struct drm_device *dev = connector->dev;
2682 const struct drm_display_mode *mode;
2683 struct list_head stereo_modes;
2684 int modes = 0, i;
2685
2686 INIT_LIST_HEAD(&stereo_modes);
2687
2688 list_for_each_entry(mode, &connector->probed_modes, head) {
2689 for (i = 0; i < ARRAY_SIZE(stereo_mandatory_modes); i++) {
2690 const struct stereo_mandatory_mode *mandatory;
2691 struct drm_display_mode *new_mode;
2692
2693 if (!stereo_match_mandatory(mode,
2694 &stereo_mandatory_modes[i]))
2695 continue;
2696
2697 mandatory = &stereo_mandatory_modes[i];
2698 new_mode = drm_mode_duplicate(dev, mode);
2699 if (!new_mode)
2700 continue;
2701
2702 new_mode->flags |= mandatory->flags;
2703 list_add_tail(&new_mode->head, &stereo_modes);
2704 modes++;
2705 }
2706 }
2707
2708 list_splice_tail(&stereo_modes, &connector->probed_modes);
2709
2710 return modes;
2711 }
2712
add_hdmi_mode(struct drm_connector * connector,u8 vic)2713 static int add_hdmi_mode(struct drm_connector *connector, u8 vic)
2714 {
2715 struct drm_device *dev = connector->dev;
2716 struct drm_display_mode *newmode;
2717
2718 vic--; /* VICs start at 1 */
2719 if (vic >= ARRAY_SIZE(edid_4k_modes)) {
2720 DRM_ERROR("Unknown HDMI VIC: %d\n", vic);
2721 return 0;
2722 }
2723
2724 newmode = drm_mode_duplicate(dev, &edid_4k_modes[vic]);
2725 if (!newmode)
2726 return 0;
2727
2728 drm_mode_probed_add(connector, newmode);
2729
2730 return 1;
2731 }
2732
add_3d_struct_modes(struct drm_connector * connector,u16 structure,const u8 * video_db,u8 video_len,u8 video_index)2733 static int add_3d_struct_modes(struct drm_connector *connector, u16 structure,
2734 const u8 *video_db, u8 video_len, u8 video_index)
2735 {
2736 struct drm_display_mode *newmode;
2737 int modes = 0;
2738
2739 if (structure & (1 << 0)) {
2740 newmode = drm_display_mode_from_vic_index(connector, video_db,
2741 video_len,
2742 video_index);
2743 if (newmode) {
2744 newmode->flags |= DRM_MODE_FLAG_3D_FRAME_PACKING;
2745 drm_mode_probed_add(connector, newmode);
2746 modes++;
2747 }
2748 }
2749 if (structure & (1 << 6)) {
2750 newmode = drm_display_mode_from_vic_index(connector, video_db,
2751 video_len,
2752 video_index);
2753 if (newmode) {
2754 newmode->flags |= DRM_MODE_FLAG_3D_TOP_AND_BOTTOM;
2755 drm_mode_probed_add(connector, newmode);
2756 modes++;
2757 }
2758 }
2759 if (structure & (1 << 8)) {
2760 newmode = drm_display_mode_from_vic_index(connector, video_db,
2761 video_len,
2762 video_index);
2763 if (newmode) {
2764 newmode->flags |= DRM_MODE_FLAG_3D_SIDE_BY_SIDE_HALF;
2765 drm_mode_probed_add(connector, newmode);
2766 modes++;
2767 }
2768 }
2769
2770 return modes;
2771 }
2772
2773 /*
2774 * do_hdmi_vsdb_modes - Parse the HDMI Vendor Specific data block
2775 * @connector: connector corresponding to the HDMI sink
2776 * @db: start of the CEA vendor specific block
2777 * @len: length of the CEA block payload, ie. one can access up to db[len]
2778 *
2779 * Parses the HDMI VSDB looking for modes to add to @connector. This function
2780 * also adds the stereo 3d modes when applicable.
2781 */
2782 static int
do_hdmi_vsdb_modes(struct drm_connector * connector,const u8 * db,u8 len,const u8 * video_db,u8 video_len)2783 do_hdmi_vsdb_modes(struct drm_connector *connector, const u8 *db, u8 len,
2784 const u8 *video_db, u8 video_len)
2785 {
2786 int modes = 0, offset = 0, i, multi_present = 0, multi_len;
2787 u8 vic_len, hdmi_3d_len = 0;
2788 u16 mask;
2789 u16 structure_all;
2790
2791 if (len < 8)
2792 goto out;
2793
2794 /* no HDMI_Video_Present */
2795 if (!(db[8] & (1 << 5)))
2796 goto out;
2797
2798 /* Latency_Fields_Present */
2799 if (db[8] & (1 << 7))
2800 offset += 2;
2801
2802 /* I_Latency_Fields_Present */
2803 if (db[8] & (1 << 6))
2804 offset += 2;
2805
2806 /* the declared length is not long enough for the 2 first bytes
2807 * of additional video format capabilities */
2808 if (len < (8 + offset + 2))
2809 goto out;
2810
2811 /* 3D_Present */
2812 offset++;
2813 if (db[8 + offset] & (1 << 7)) {
2814 modes += add_hdmi_mandatory_stereo_modes(connector);
2815
2816 /* 3D_Multi_present */
2817 multi_present = (db[8 + offset] & 0x60) >> 5;
2818 }
2819
2820 offset++;
2821 vic_len = db[8 + offset] >> 5;
2822 hdmi_3d_len = db[8 + offset] & 0x1f;
2823
2824 for (i = 0; i < vic_len && len >= (9 + offset + i); i++) {
2825 u8 vic;
2826
2827 vic = db[9 + offset + i];
2828 modes += add_hdmi_mode(connector, vic);
2829 }
2830 offset += 1 + vic_len;
2831
2832 if (multi_present == 1)
2833 multi_len = 2;
2834 else if (multi_present == 2)
2835 multi_len = 4;
2836 else
2837 multi_len = 0;
2838
2839 if (len < (8 + offset + hdmi_3d_len - 1))
2840 goto out;
2841
2842 if (hdmi_3d_len < multi_len)
2843 goto out;
2844
2845 if (multi_present == 1 || multi_present == 2) {
2846 /* 3D_Structure_ALL */
2847 structure_all = (db[8 + offset] << 8) | db[9 + offset];
2848
2849 /* check if 3D_MASK is present */
2850 if (multi_present == 2)
2851 mask = (db[10 + offset] << 8) | db[11 + offset];
2852 else
2853 mask = 0xffff;
2854
2855 for (i = 0; i < 16; i++) {
2856 if (mask & (1 << i))
2857 modes += add_3d_struct_modes(connector,
2858 structure_all,
2859 video_db,
2860 video_len, i);
2861 }
2862 }
2863
2864 offset += multi_len;
2865
2866 for (i = 0; i < (hdmi_3d_len - multi_len); i++) {
2867 int vic_index;
2868 struct drm_display_mode *newmode = NULL;
2869 unsigned int newflag = 0;
2870 bool detail_present;
2871
2872 detail_present = ((db[8 + offset + i] & 0x0f) > 7);
2873
2874 if (detail_present && (i + 1 == hdmi_3d_len - multi_len))
2875 break;
2876
2877 /* 2D_VIC_order_X */
2878 vic_index = db[8 + offset + i] >> 4;
2879
2880 /* 3D_Structure_X */
2881 switch (db[8 + offset + i] & 0x0f) {
2882 case 0:
2883 newflag = DRM_MODE_FLAG_3D_FRAME_PACKING;
2884 break;
2885 case 6:
2886 newflag = DRM_MODE_FLAG_3D_TOP_AND_BOTTOM;
2887 break;
2888 case 8:
2889 /* 3D_Detail_X */
2890 if ((db[9 + offset + i] >> 4) == 1)
2891 newflag = DRM_MODE_FLAG_3D_SIDE_BY_SIDE_HALF;
2892 break;
2893 }
2894
2895 if (newflag != 0) {
2896 newmode = drm_display_mode_from_vic_index(connector,
2897 video_db,
2898 video_len,
2899 vic_index);
2900
2901 if (newmode) {
2902 newmode->flags |= newflag;
2903 drm_mode_probed_add(connector, newmode);
2904 modes++;
2905 }
2906 }
2907
2908 if (detail_present)
2909 i++;
2910 }
2911
2912 out:
2913 return modes;
2914 }
2915
2916 static int
cea_db_payload_len(const u8 * db)2917 cea_db_payload_len(const u8 *db)
2918 {
2919 return db[0] & 0x1f;
2920 }
2921
2922 static int
cea_db_tag(const u8 * db)2923 cea_db_tag(const u8 *db)
2924 {
2925 return db[0] >> 5;
2926 }
2927
2928 static int
cea_revision(const u8 * cea)2929 cea_revision(const u8 *cea)
2930 {
2931 return cea[1];
2932 }
2933
2934 static int
cea_db_offsets(const u8 * cea,int * start,int * end)2935 cea_db_offsets(const u8 *cea, int *start, int *end)
2936 {
2937 /* Data block offset in CEA extension block */
2938 *start = 4;
2939 *end = cea[2];
2940 if (*end == 0)
2941 *end = 127;
2942 if (*end < 4 || *end > 127)
2943 return -ERANGE;
2944 return 0;
2945 }
2946
cea_db_is_hdmi_vsdb(const u8 * db)2947 static bool cea_db_is_hdmi_vsdb(const u8 *db)
2948 {
2949 int hdmi_id;
2950
2951 if (cea_db_tag(db) != VENDOR_BLOCK)
2952 return false;
2953
2954 if (cea_db_payload_len(db) < 5)
2955 return false;
2956
2957 hdmi_id = db[1] | (db[2] << 8) | (db[3] << 16);
2958
2959 return hdmi_id == HDMI_IEEE_OUI;
2960 }
2961
2962 #define for_each_cea_db(cea, i, start, end) \
2963 for ((i) = (start); (i) < (end) && (i) + cea_db_payload_len(&(cea)[(i)]) < (end); (i) += cea_db_payload_len(&(cea)[(i)]) + 1)
2964
2965 static int
add_cea_modes(struct drm_connector * connector,struct edid * edid)2966 add_cea_modes(struct drm_connector *connector, struct edid *edid)
2967 {
2968 const u8 *cea = drm_find_cea_extension(edid);
2969 const u8 *db, *hdmi = NULL, *video = NULL;
2970 u8 dbl, hdmi_len, video_len = 0;
2971 int modes = 0;
2972
2973 if (cea && cea_revision(cea) >= 3) {
2974 int i, start, end;
2975
2976 if (cea_db_offsets(cea, &start, &end))
2977 return 0;
2978
2979 for_each_cea_db(cea, i, start, end) {
2980 db = &cea[i];
2981 dbl = cea_db_payload_len(db);
2982
2983 if (cea_db_tag(db) == VIDEO_BLOCK) {
2984 video = db + 1;
2985 video_len = dbl;
2986 modes += do_cea_modes(connector, video, dbl);
2987 }
2988 else if (cea_db_is_hdmi_vsdb(db)) {
2989 hdmi = db;
2990 hdmi_len = dbl;
2991 }
2992 }
2993 }
2994
2995 /*
2996 * We parse the HDMI VSDB after having added the cea modes as we will
2997 * be patching their flags when the sink supports stereo 3D.
2998 */
2999 if (hdmi)
3000 modes += do_hdmi_vsdb_modes(connector, hdmi, hdmi_len, video,
3001 video_len);
3002
3003 return modes;
3004 }
3005
3006 static void
parse_hdmi_vsdb(struct drm_connector * connector,const u8 * db)3007 parse_hdmi_vsdb(struct drm_connector *connector, const u8 *db)
3008 {
3009 u8 len = cea_db_payload_len(db);
3010
3011 if (len >= 6) {
3012 connector->eld[5] |= (db[6] >> 7) << 1; /* Supports_AI */
3013 connector->dvi_dual = db[6] & 1;
3014 }
3015 if (len >= 7)
3016 connector->max_tmds_clock = db[7] * 5;
3017 if (len >= 8) {
3018 connector->latency_present[0] = db[8] >> 7;
3019 connector->latency_present[1] = (db[8] >> 6) & 1;
3020 }
3021 if (len >= 9)
3022 connector->video_latency[0] = db[9];
3023 if (len >= 10)
3024 connector->audio_latency[0] = db[10];
3025 if (len >= 11)
3026 connector->video_latency[1] = db[11];
3027 if (len >= 12)
3028 connector->audio_latency[1] = db[12];
3029
3030 DRM_DEBUG_KMS("HDMI: DVI dual %d, "
3031 "max TMDS clock %d, "
3032 "latency present %d %d, "
3033 "video latency %d %d, "
3034 "audio latency %d %d\n",
3035 connector->dvi_dual,
3036 connector->max_tmds_clock,
3037 (int) connector->latency_present[0],
3038 (int) connector->latency_present[1],
3039 connector->video_latency[0],
3040 connector->video_latency[1],
3041 connector->audio_latency[0],
3042 connector->audio_latency[1]);
3043 }
3044
3045 static void
monitor_name(struct detailed_timing * t,void * data)3046 monitor_name(struct detailed_timing *t, void *data)
3047 {
3048 if (t->data.other_data.type == EDID_DETAIL_MONITOR_NAME)
3049 *(u8 **)data = t->data.other_data.data.str.str;
3050 }
3051
3052 /**
3053 * drm_edid_to_eld - build ELD from EDID
3054 * @connector: connector corresponding to the HDMI/DP sink
3055 * @edid: EDID to parse
3056 *
3057 * Fill the ELD (EDID-Like Data) buffer for passing to the audio driver. The
3058 * Conn_Type, HDCP and Port_ID ELD fields are left for the graphics driver to
3059 * fill in.
3060 */
drm_edid_to_eld(struct drm_connector * connector,struct edid * edid)3061 void drm_edid_to_eld(struct drm_connector *connector, struct edid *edid)
3062 {
3063 uint8_t *eld = connector->eld;
3064 u8 *cea;
3065 u8 *name;
3066 u8 *db;
3067 int sad_count = 0;
3068 int mnl;
3069 int dbl;
3070
3071 memset(eld, 0, sizeof(connector->eld));
3072
3073 cea = drm_find_cea_extension(edid);
3074 if (!cea) {
3075 DRM_DEBUG_KMS("ELD: no CEA Extension found\n");
3076 return;
3077 }
3078
3079 name = NULL;
3080 drm_for_each_detailed_block((u8 *)edid, monitor_name, &name);
3081 for (mnl = 0; name && mnl < 13; mnl++) {
3082 if (name[mnl] == 0x0a)
3083 break;
3084 eld[20 + mnl] = name[mnl];
3085 }
3086 eld[4] = (cea[1] << 5) | mnl;
3087 DRM_DEBUG_KMS("ELD monitor %s\n", eld + 20);
3088
3089 eld[0] = 2 << 3; /* ELD version: 2 */
3090
3091 eld[16] = edid->mfg_id[0];
3092 eld[17] = edid->mfg_id[1];
3093 eld[18] = edid->prod_code[0];
3094 eld[19] = edid->prod_code[1];
3095
3096 if (cea_revision(cea) >= 3) {
3097 int i, start, end;
3098
3099 if (cea_db_offsets(cea, &start, &end)) {
3100 start = 0;
3101 end = 0;
3102 }
3103
3104 for_each_cea_db(cea, i, start, end) {
3105 db = &cea[i];
3106 dbl = cea_db_payload_len(db);
3107
3108 switch (cea_db_tag(db)) {
3109 case AUDIO_BLOCK:
3110 /* Audio Data Block, contains SADs */
3111 sad_count = dbl / 3;
3112 if (dbl >= 1)
3113 memcpy(eld + 20 + mnl, &db[1], dbl);
3114 break;
3115 case SPEAKER_BLOCK:
3116 /* Speaker Allocation Data Block */
3117 if (dbl >= 1)
3118 eld[7] = db[1];
3119 break;
3120 case VENDOR_BLOCK:
3121 /* HDMI Vendor-Specific Data Block */
3122 if (cea_db_is_hdmi_vsdb(db))
3123 parse_hdmi_vsdb(connector, db);
3124 break;
3125 default:
3126 break;
3127 }
3128 }
3129 }
3130 eld[5] |= sad_count << 4;
3131 eld[2] = (20 + mnl + sad_count * 3 + 3) / 4;
3132
3133 DRM_DEBUG_KMS("ELD size %d, SAD count %d\n", (int)eld[2], sad_count);
3134 }
3135 EXPORT_SYMBOL(drm_edid_to_eld);
3136
3137 /**
3138 * drm_edid_to_sad - extracts SADs from EDID
3139 * @edid: EDID to parse
3140 * @sads: pointer that will be set to the extracted SADs
3141 *
3142 * Looks for CEA EDID block and extracts SADs (Short Audio Descriptors) from it.
3143 *
3144 * Note: The returned pointer needs to be freed using kfree().
3145 *
3146 * Return: The number of found SADs or negative number on error.
3147 */
drm_edid_to_sad(struct edid * edid,struct cea_sad ** sads)3148 int drm_edid_to_sad(struct edid *edid, struct cea_sad **sads)
3149 {
3150 int count = 0;
3151 int i, start, end, dbl;
3152 u8 *cea;
3153
3154 cea = drm_find_cea_extension(edid);
3155 if (!cea) {
3156 DRM_DEBUG_KMS("SAD: no CEA Extension found\n");
3157 return -ENOENT;
3158 }
3159
3160 if (cea_revision(cea) < 3) {
3161 DRM_DEBUG_KMS("SAD: wrong CEA revision\n");
3162 return -ENOTSUPP;
3163 }
3164
3165 if (cea_db_offsets(cea, &start, &end)) {
3166 DRM_DEBUG_KMS("SAD: invalid data block offsets\n");
3167 return -EPROTO;
3168 }
3169
3170 for_each_cea_db(cea, i, start, end) {
3171 u8 *db = &cea[i];
3172
3173 if (cea_db_tag(db) == AUDIO_BLOCK) {
3174 int j;
3175 dbl = cea_db_payload_len(db);
3176
3177 count = dbl / 3; /* SAD is 3B */
3178 *sads = kcalloc(count, sizeof(**sads), GFP_KERNEL);
3179 if (!*sads)
3180 return -ENOMEM;
3181 for (j = 0; j < count; j++) {
3182 u8 *sad = &db[1 + j * 3];
3183
3184 (*sads)[j].format = (sad[0] & 0x78) >> 3;
3185 (*sads)[j].channels = sad[0] & 0x7;
3186 (*sads)[j].freq = sad[1] & 0x7F;
3187 (*sads)[j].byte2 = sad[2];
3188 }
3189 break;
3190 }
3191 }
3192
3193 return count;
3194 }
3195 EXPORT_SYMBOL(drm_edid_to_sad);
3196
3197 /**
3198 * drm_edid_to_speaker_allocation - extracts Speaker Allocation Data Blocks from EDID
3199 * @edid: EDID to parse
3200 * @sadb: pointer to the speaker block
3201 *
3202 * Looks for CEA EDID block and extracts the Speaker Allocation Data Block from it.
3203 *
3204 * Note: The returned pointer needs to be freed using kfree().
3205 *
3206 * Return: The number of found Speaker Allocation Blocks or negative number on
3207 * error.
3208 */
drm_edid_to_speaker_allocation(struct edid * edid,u8 ** sadb)3209 int drm_edid_to_speaker_allocation(struct edid *edid, u8 **sadb)
3210 {
3211 int count = 0;
3212 int i, start, end, dbl;
3213 const u8 *cea;
3214
3215 cea = drm_find_cea_extension(edid);
3216 if (!cea) {
3217 DRM_DEBUG_KMS("SAD: no CEA Extension found\n");
3218 return -ENOENT;
3219 }
3220
3221 if (cea_revision(cea) < 3) {
3222 DRM_DEBUG_KMS("SAD: wrong CEA revision\n");
3223 return -ENOTSUPP;
3224 }
3225
3226 if (cea_db_offsets(cea, &start, &end)) {
3227 DRM_DEBUG_KMS("SAD: invalid data block offsets\n");
3228 return -EPROTO;
3229 }
3230
3231 for_each_cea_db(cea, i, start, end) {
3232 const u8 *db = &cea[i];
3233
3234 if (cea_db_tag(db) == SPEAKER_BLOCK) {
3235 dbl = cea_db_payload_len(db);
3236
3237 /* Speaker Allocation Data Block */
3238 if (dbl == 3) {
3239 *sadb = kmemdup(&db[1], dbl, GFP_KERNEL);
3240 if (!*sadb)
3241 return -ENOMEM;
3242 count = dbl;
3243 break;
3244 }
3245 }
3246 }
3247
3248 return count;
3249 }
3250 EXPORT_SYMBOL(drm_edid_to_speaker_allocation);
3251
3252 /**
3253 * drm_av_sync_delay - compute the HDMI/DP sink audio-video sync delay
3254 * @connector: connector associated with the HDMI/DP sink
3255 * @mode: the display mode
3256 *
3257 * Return: The HDMI/DP sink's audio-video sync delay in milliseconds or 0 if
3258 * the sink doesn't support audio or video.
3259 */
drm_av_sync_delay(struct drm_connector * connector,struct drm_display_mode * mode)3260 int drm_av_sync_delay(struct drm_connector *connector,
3261 struct drm_display_mode *mode)
3262 {
3263 int i = !!(mode->flags & DRM_MODE_FLAG_INTERLACE);
3264 int a, v;
3265
3266 if (!connector->latency_present[0])
3267 return 0;
3268 if (!connector->latency_present[1])
3269 i = 0;
3270
3271 a = connector->audio_latency[i];
3272 v = connector->video_latency[i];
3273
3274 /*
3275 * HDMI/DP sink doesn't support audio or video?
3276 */
3277 if (a == 255 || v == 255)
3278 return 0;
3279
3280 /*
3281 * Convert raw EDID values to millisecond.
3282 * Treat unknown latency as 0ms.
3283 */
3284 if (a)
3285 a = min(2 * (a - 1), 500);
3286 if (v)
3287 v = min(2 * (v - 1), 500);
3288
3289 return max(v - a, 0);
3290 }
3291 EXPORT_SYMBOL(drm_av_sync_delay);
3292
3293 /**
3294 * drm_select_eld - select one ELD from multiple HDMI/DP sinks
3295 * @encoder: the encoder just changed display mode
3296 * @mode: the adjusted display mode
3297 *
3298 * It's possible for one encoder to be associated with multiple HDMI/DP sinks.
3299 * The policy is now hard coded to simply use the first HDMI/DP sink's ELD.
3300 *
3301 * Return: The connector associated with the first HDMI/DP sink that has ELD
3302 * attached to it.
3303 */
drm_select_eld(struct drm_encoder * encoder,struct drm_display_mode * mode)3304 struct drm_connector *drm_select_eld(struct drm_encoder *encoder,
3305 struct drm_display_mode *mode)
3306 {
3307 struct drm_connector *connector;
3308 struct drm_device *dev = encoder->dev;
3309
3310 WARN_ON(!mutex_is_locked(&dev->mode_config.mutex));
3311 WARN_ON(!drm_modeset_is_locked(&dev->mode_config.connection_mutex));
3312
3313 list_for_each_entry(connector, &dev->mode_config.connector_list, head)
3314 if (connector->encoder == encoder && connector->eld[0])
3315 return connector;
3316
3317 return NULL;
3318 }
3319 EXPORT_SYMBOL(drm_select_eld);
3320
3321 /**
3322 * drm_detect_hdmi_monitor - detect whether monitor is HDMI
3323 * @edid: monitor EDID information
3324 *
3325 * Parse the CEA extension according to CEA-861-B.
3326 *
3327 * Return: True if the monitor is HDMI, false if not or unknown.
3328 */
drm_detect_hdmi_monitor(struct edid * edid)3329 bool drm_detect_hdmi_monitor(struct edid *edid)
3330 {
3331 u8 *edid_ext;
3332 int i;
3333 int start_offset, end_offset;
3334
3335 edid_ext = drm_find_cea_extension(edid);
3336 if (!edid_ext)
3337 return false;
3338
3339 if (cea_db_offsets(edid_ext, &start_offset, &end_offset))
3340 return false;
3341
3342 /*
3343 * Because HDMI identifier is in Vendor Specific Block,
3344 * search it from all data blocks of CEA extension.
3345 */
3346 for_each_cea_db(edid_ext, i, start_offset, end_offset) {
3347 if (cea_db_is_hdmi_vsdb(&edid_ext[i]))
3348 return true;
3349 }
3350
3351 return false;
3352 }
3353 EXPORT_SYMBOL(drm_detect_hdmi_monitor);
3354
3355 /**
3356 * drm_detect_monitor_audio - check monitor audio capability
3357 * @edid: EDID block to scan
3358 *
3359 * Monitor should have CEA extension block.
3360 * If monitor has 'basic audio', but no CEA audio blocks, it's 'basic
3361 * audio' only. If there is any audio extension block and supported
3362 * audio format, assume at least 'basic audio' support, even if 'basic
3363 * audio' is not defined in EDID.
3364 *
3365 * Return: True if the monitor supports audio, false otherwise.
3366 */
drm_detect_monitor_audio(struct edid * edid)3367 bool drm_detect_monitor_audio(struct edid *edid)
3368 {
3369 u8 *edid_ext;
3370 int i, j;
3371 bool has_audio = false;
3372 int start_offset, end_offset;
3373
3374 edid_ext = drm_find_cea_extension(edid);
3375 if (!edid_ext)
3376 goto end;
3377
3378 has_audio = ((edid_ext[3] & EDID_BASIC_AUDIO) != 0);
3379
3380 if (has_audio) {
3381 DRM_DEBUG_KMS("Monitor has basic audio support\n");
3382 goto end;
3383 }
3384
3385 if (cea_db_offsets(edid_ext, &start_offset, &end_offset))
3386 goto end;
3387
3388 for_each_cea_db(edid_ext, i, start_offset, end_offset) {
3389 if (cea_db_tag(&edid_ext[i]) == AUDIO_BLOCK) {
3390 has_audio = true;
3391 for (j = 1; j < cea_db_payload_len(&edid_ext[i]) + 1; j += 3)
3392 DRM_DEBUG_KMS("CEA audio format %d\n",
3393 (edid_ext[i + j] >> 3) & 0xf);
3394 goto end;
3395 }
3396 }
3397 end:
3398 return has_audio;
3399 }
3400 EXPORT_SYMBOL(drm_detect_monitor_audio);
3401
3402 /**
3403 * drm_rgb_quant_range_selectable - is RGB quantization range selectable?
3404 * @edid: EDID block to scan
3405 *
3406 * Check whether the monitor reports the RGB quantization range selection
3407 * as supported. The AVI infoframe can then be used to inform the monitor
3408 * which quantization range (full or limited) is used.
3409 *
3410 * Return: True if the RGB quantization range is selectable, false otherwise.
3411 */
drm_rgb_quant_range_selectable(struct edid * edid)3412 bool drm_rgb_quant_range_selectable(struct edid *edid)
3413 {
3414 u8 *edid_ext;
3415 int i, start, end;
3416
3417 edid_ext = drm_find_cea_extension(edid);
3418 if (!edid_ext)
3419 return false;
3420
3421 if (cea_db_offsets(edid_ext, &start, &end))
3422 return false;
3423
3424 for_each_cea_db(edid_ext, i, start, end) {
3425 if (cea_db_tag(&edid_ext[i]) == VIDEO_CAPABILITY_BLOCK &&
3426 cea_db_payload_len(&edid_ext[i]) == 2) {
3427 DRM_DEBUG_KMS("CEA VCDB 0x%02x\n", edid_ext[i + 2]);
3428 return edid_ext[i + 2] & EDID_CEA_VCDB_QS;
3429 }
3430 }
3431
3432 return false;
3433 }
3434 EXPORT_SYMBOL(drm_rgb_quant_range_selectable);
3435
3436 /**
3437 * drm_assign_hdmi_deep_color_info - detect whether monitor supports
3438 * hdmi deep color modes and update drm_display_info if so.
3439 * @edid: monitor EDID information
3440 * @info: Updated with maximum supported deep color bpc and color format
3441 * if deep color supported.
3442 * @connector: DRM connector, used only for debug output
3443 *
3444 * Parse the CEA extension according to CEA-861-B.
3445 * Return true if HDMI deep color supported, false if not or unknown.
3446 */
drm_assign_hdmi_deep_color_info(struct edid * edid,struct drm_display_info * info,struct drm_connector * connector)3447 static bool drm_assign_hdmi_deep_color_info(struct edid *edid,
3448 struct drm_display_info *info,
3449 struct drm_connector *connector)
3450 {
3451 u8 *edid_ext, *hdmi;
3452 int i;
3453 int start_offset, end_offset;
3454 unsigned int dc_bpc = 0;
3455
3456 edid_ext = drm_find_cea_extension(edid);
3457 if (!edid_ext)
3458 return false;
3459
3460 if (cea_db_offsets(edid_ext, &start_offset, &end_offset))
3461 return false;
3462
3463 /*
3464 * Because HDMI identifier is in Vendor Specific Block,
3465 * search it from all data blocks of CEA extension.
3466 */
3467 for_each_cea_db(edid_ext, i, start_offset, end_offset) {
3468 if (cea_db_is_hdmi_vsdb(&edid_ext[i])) {
3469 /* HDMI supports at least 8 bpc */
3470 info->bpc = 8;
3471
3472 hdmi = &edid_ext[i];
3473 if (cea_db_payload_len(hdmi) < 6)
3474 return false;
3475
3476 if (hdmi[6] & DRM_EDID_HDMI_DC_30) {
3477 dc_bpc = 10;
3478 info->edid_hdmi_dc_modes |= DRM_EDID_HDMI_DC_30;
3479 DRM_DEBUG("%s: HDMI sink does deep color 30.\n",
3480 connector->name);
3481 }
3482
3483 if (hdmi[6] & DRM_EDID_HDMI_DC_36) {
3484 dc_bpc = 12;
3485 info->edid_hdmi_dc_modes |= DRM_EDID_HDMI_DC_36;
3486 DRM_DEBUG("%s: HDMI sink does deep color 36.\n",
3487 connector->name);
3488 }
3489
3490 if (hdmi[6] & DRM_EDID_HDMI_DC_48) {
3491 dc_bpc = 16;
3492 info->edid_hdmi_dc_modes |= DRM_EDID_HDMI_DC_48;
3493 DRM_DEBUG("%s: HDMI sink does deep color 48.\n",
3494 connector->name);
3495 }
3496
3497 if (dc_bpc > 0) {
3498 DRM_DEBUG("%s: Assigning HDMI sink color depth as %d bpc.\n",
3499 connector->name, dc_bpc);
3500 info->bpc = dc_bpc;
3501
3502 /*
3503 * Deep color support mandates RGB444 support for all video
3504 * modes and forbids YCRCB422 support for all video modes per
3505 * HDMI 1.3 spec.
3506 */
3507 info->color_formats = DRM_COLOR_FORMAT_RGB444;
3508
3509 /* YCRCB444 is optional according to spec. */
3510 if (hdmi[6] & DRM_EDID_HDMI_DC_Y444) {
3511 info->color_formats |= DRM_COLOR_FORMAT_YCRCB444;
3512 DRM_DEBUG("%s: HDMI sink does YCRCB444 in deep color.\n",
3513 connector->name);
3514 }
3515
3516 /*
3517 * Spec says that if any deep color mode is supported at all,
3518 * then deep color 36 bit must be supported.
3519 */
3520 if (!(hdmi[6] & DRM_EDID_HDMI_DC_36)) {
3521 DRM_DEBUG("%s: HDMI sink should do DC_36, but does not!\n",
3522 connector->name);
3523 }
3524
3525 return true;
3526 }
3527 else {
3528 DRM_DEBUG("%s: No deep color support on this HDMI sink.\n",
3529 connector->name);
3530 }
3531 }
3532 }
3533
3534 return false;
3535 }
3536
3537 /**
3538 * drm_add_display_info - pull display info out if present
3539 * @edid: EDID data
3540 * @info: display info (attached to connector)
3541 * @connector: connector whose edid is used to build display info
3542 *
3543 * Grab any available display info and stuff it into the drm_display_info
3544 * structure that's part of the connector. Useful for tracking bpp and
3545 * color spaces.
3546 */
drm_add_display_info(struct edid * edid,struct drm_display_info * info,struct drm_connector * connector)3547 static void drm_add_display_info(struct edid *edid,
3548 struct drm_display_info *info,
3549 struct drm_connector *connector)
3550 {
3551 u8 *edid_ext;
3552
3553 info->width_mm = edid->width_cm * 10;
3554 info->height_mm = edid->height_cm * 10;
3555
3556 /* driver figures it out in this case */
3557 info->bpc = 0;
3558 info->color_formats = 0;
3559
3560 if (edid->revision < 3)
3561 return;
3562
3563 if (!(edid->input & DRM_EDID_INPUT_DIGITAL))
3564 return;
3565
3566 /* Get data from CEA blocks if present */
3567 edid_ext = drm_find_cea_extension(edid);
3568 if (edid_ext) {
3569 info->cea_rev = edid_ext[1];
3570
3571 /* The existence of a CEA block should imply RGB support */
3572 info->color_formats = DRM_COLOR_FORMAT_RGB444;
3573 if (edid_ext[3] & EDID_CEA_YCRCB444)
3574 info->color_formats |= DRM_COLOR_FORMAT_YCRCB444;
3575 if (edid_ext[3] & EDID_CEA_YCRCB422)
3576 info->color_formats |= DRM_COLOR_FORMAT_YCRCB422;
3577 }
3578
3579 /* HDMI deep color modes supported? Assign to info, if so */
3580 drm_assign_hdmi_deep_color_info(edid, info, connector);
3581
3582 /* Only defined for 1.4 with digital displays */
3583 if (edid->revision < 4)
3584 return;
3585
3586 switch (edid->input & DRM_EDID_DIGITAL_DEPTH_MASK) {
3587 case DRM_EDID_DIGITAL_DEPTH_6:
3588 info->bpc = 6;
3589 break;
3590 case DRM_EDID_DIGITAL_DEPTH_8:
3591 info->bpc = 8;
3592 break;
3593 case DRM_EDID_DIGITAL_DEPTH_10:
3594 info->bpc = 10;
3595 break;
3596 case DRM_EDID_DIGITAL_DEPTH_12:
3597 info->bpc = 12;
3598 break;
3599 case DRM_EDID_DIGITAL_DEPTH_14:
3600 info->bpc = 14;
3601 break;
3602 case DRM_EDID_DIGITAL_DEPTH_16:
3603 info->bpc = 16;
3604 break;
3605 case DRM_EDID_DIGITAL_DEPTH_UNDEF:
3606 default:
3607 info->bpc = 0;
3608 break;
3609 }
3610
3611 DRM_DEBUG("%s: Assigning EDID-1.4 digital sink color depth as %d bpc.\n",
3612 connector->name, info->bpc);
3613
3614 info->color_formats |= DRM_COLOR_FORMAT_RGB444;
3615 if (edid->features & DRM_EDID_FEATURE_RGB_YCRCB444)
3616 info->color_formats |= DRM_COLOR_FORMAT_YCRCB444;
3617 if (edid->features & DRM_EDID_FEATURE_RGB_YCRCB422)
3618 info->color_formats |= DRM_COLOR_FORMAT_YCRCB422;
3619 }
3620
3621 /**
3622 * drm_add_edid_modes - add modes from EDID data, if available
3623 * @connector: connector we're probing
3624 * @edid: EDID data
3625 *
3626 * Add the specified modes to the connector's mode list.
3627 *
3628 * Return: The number of modes added or 0 if we couldn't find any.
3629 */
drm_add_edid_modes(struct drm_connector * connector,struct edid * edid)3630 int drm_add_edid_modes(struct drm_connector *connector, struct edid *edid)
3631 {
3632 int num_modes = 0;
3633 u32 quirks;
3634
3635 if (edid == NULL) {
3636 return 0;
3637 }
3638 if (!drm_edid_is_valid(edid)) {
3639 dev_warn(connector->dev->dev, "%s: EDID invalid.\n",
3640 connector->name);
3641 return 0;
3642 }
3643
3644 quirks = edid_get_quirks(edid);
3645
3646 /*
3647 * EDID spec says modes should be preferred in this order:
3648 * - preferred detailed mode
3649 * - other detailed modes from base block
3650 * - detailed modes from extension blocks
3651 * - CVT 3-byte code modes
3652 * - standard timing codes
3653 * - established timing codes
3654 * - modes inferred from GTF or CVT range information
3655 *
3656 * We get this pretty much right.
3657 *
3658 * XXX order for additional mode types in extension blocks?
3659 */
3660 num_modes += add_detailed_modes(connector, edid, quirks);
3661 num_modes += add_cvt_modes(connector, edid);
3662 num_modes += add_standard_modes(connector, edid);
3663 num_modes += add_established_modes(connector, edid);
3664 if (edid->features & DRM_EDID_FEATURE_DEFAULT_GTF)
3665 num_modes += add_inferred_modes(connector, edid);
3666 num_modes += add_cea_modes(connector, edid);
3667 num_modes += add_alternate_cea_modes(connector, edid);
3668
3669 if (quirks & (EDID_QUIRK_PREFER_LARGE_60 | EDID_QUIRK_PREFER_LARGE_75))
3670 edid_fixup_preferred(connector, quirks);
3671
3672 drm_add_display_info(edid, &connector->display_info, connector);
3673
3674 if (quirks & EDID_QUIRK_FORCE_8BPC)
3675 connector->display_info.bpc = 8;
3676
3677 if (quirks & EDID_QUIRK_FORCE_12BPC)
3678 connector->display_info.bpc = 12;
3679
3680 return num_modes;
3681 }
3682 EXPORT_SYMBOL(drm_add_edid_modes);
3683
3684 /**
3685 * drm_add_modes_noedid - add modes for the connectors without EDID
3686 * @connector: connector we're probing
3687 * @hdisplay: the horizontal display limit
3688 * @vdisplay: the vertical display limit
3689 *
3690 * Add the specified modes to the connector's mode list. Only when the
3691 * hdisplay/vdisplay is not beyond the given limit, it will be added.
3692 *
3693 * Return: The number of modes added or 0 if we couldn't find any.
3694 */
drm_add_modes_noedid(struct drm_connector * connector,int hdisplay,int vdisplay)3695 int drm_add_modes_noedid(struct drm_connector *connector,
3696 int hdisplay, int vdisplay)
3697 {
3698 int i, count, num_modes = 0;
3699 struct drm_display_mode *mode;
3700 struct drm_device *dev = connector->dev;
3701
3702 count = sizeof(drm_dmt_modes) / sizeof(struct drm_display_mode);
3703 if (hdisplay < 0)
3704 hdisplay = 0;
3705 if (vdisplay < 0)
3706 vdisplay = 0;
3707
3708 for (i = 0; i < count; i++) {
3709 const struct drm_display_mode *ptr = &drm_dmt_modes[i];
3710 if (hdisplay && vdisplay) {
3711 /*
3712 * Only when two are valid, they will be used to check
3713 * whether the mode should be added to the mode list of
3714 * the connector.
3715 */
3716 if (ptr->hdisplay > hdisplay ||
3717 ptr->vdisplay > vdisplay)
3718 continue;
3719 }
3720 if (drm_mode_vrefresh(ptr) > 61)
3721 continue;
3722 mode = drm_mode_duplicate(dev, ptr);
3723 if (mode) {
3724 drm_mode_probed_add(connector, mode);
3725 num_modes++;
3726 }
3727 }
3728 return num_modes;
3729 }
3730 EXPORT_SYMBOL(drm_add_modes_noedid);
3731
3732 /**
3733 * drm_set_preferred_mode - Sets the preferred mode of a connector
3734 * @connector: connector whose mode list should be processed
3735 * @hpref: horizontal resolution of preferred mode
3736 * @vpref: vertical resolution of preferred mode
3737 *
3738 * Marks a mode as preferred if it matches the resolution specified by @hpref
3739 * and @vpref.
3740 */
drm_set_preferred_mode(struct drm_connector * connector,int hpref,int vpref)3741 void drm_set_preferred_mode(struct drm_connector *connector,
3742 int hpref, int vpref)
3743 {
3744 struct drm_display_mode *mode;
3745
3746 list_for_each_entry(mode, &connector->probed_modes, head) {
3747 if (mode->hdisplay == hpref &&
3748 mode->vdisplay == vpref)
3749 mode->type |= DRM_MODE_TYPE_PREFERRED;
3750 }
3751 }
3752 EXPORT_SYMBOL(drm_set_preferred_mode);
3753
3754 /**
3755 * drm_hdmi_avi_infoframe_from_display_mode() - fill an HDMI AVI infoframe with
3756 * data from a DRM display mode
3757 * @frame: HDMI AVI infoframe
3758 * @mode: DRM display mode
3759 *
3760 * Return: 0 on success or a negative error code on failure.
3761 */
3762 int
drm_hdmi_avi_infoframe_from_display_mode(struct hdmi_avi_infoframe * frame,const struct drm_display_mode * mode)3763 drm_hdmi_avi_infoframe_from_display_mode(struct hdmi_avi_infoframe *frame,
3764 const struct drm_display_mode *mode)
3765 {
3766 int err;
3767
3768 if (!frame || !mode)
3769 return -EINVAL;
3770
3771 err = hdmi_avi_infoframe_init(frame);
3772 if (err < 0)
3773 return err;
3774
3775 if (mode->flags & DRM_MODE_FLAG_DBLCLK)
3776 frame->pixel_repeat = 1;
3777
3778 frame->video_code = drm_match_cea_mode(mode);
3779
3780 frame->picture_aspect = HDMI_PICTURE_ASPECT_NONE;
3781
3782 /*
3783 * Populate picture aspect ratio from either
3784 * user input (if specified) or from the CEA mode list.
3785 */
3786 if (mode->picture_aspect_ratio == HDMI_PICTURE_ASPECT_4_3 ||
3787 mode->picture_aspect_ratio == HDMI_PICTURE_ASPECT_16_9)
3788 frame->picture_aspect = mode->picture_aspect_ratio;
3789 else if (frame->video_code > 0)
3790 frame->picture_aspect = drm_get_cea_aspect_ratio(
3791 frame->video_code);
3792
3793 frame->active_aspect = HDMI_ACTIVE_ASPECT_PICTURE;
3794 frame->scan_mode = HDMI_SCAN_MODE_UNDERSCAN;
3795
3796 return 0;
3797 }
3798 EXPORT_SYMBOL(drm_hdmi_avi_infoframe_from_display_mode);
3799
3800 static enum hdmi_3d_structure
s3d_structure_from_display_mode(const struct drm_display_mode * mode)3801 s3d_structure_from_display_mode(const struct drm_display_mode *mode)
3802 {
3803 u32 layout = mode->flags & DRM_MODE_FLAG_3D_MASK;
3804
3805 switch (layout) {
3806 case DRM_MODE_FLAG_3D_FRAME_PACKING:
3807 return HDMI_3D_STRUCTURE_FRAME_PACKING;
3808 case DRM_MODE_FLAG_3D_FIELD_ALTERNATIVE:
3809 return HDMI_3D_STRUCTURE_FIELD_ALTERNATIVE;
3810 case DRM_MODE_FLAG_3D_LINE_ALTERNATIVE:
3811 return HDMI_3D_STRUCTURE_LINE_ALTERNATIVE;
3812 case DRM_MODE_FLAG_3D_SIDE_BY_SIDE_FULL:
3813 return HDMI_3D_STRUCTURE_SIDE_BY_SIDE_FULL;
3814 case DRM_MODE_FLAG_3D_L_DEPTH:
3815 return HDMI_3D_STRUCTURE_L_DEPTH;
3816 case DRM_MODE_FLAG_3D_L_DEPTH_GFX_GFX_DEPTH:
3817 return HDMI_3D_STRUCTURE_L_DEPTH_GFX_GFX_DEPTH;
3818 case DRM_MODE_FLAG_3D_TOP_AND_BOTTOM:
3819 return HDMI_3D_STRUCTURE_TOP_AND_BOTTOM;
3820 case DRM_MODE_FLAG_3D_SIDE_BY_SIDE_HALF:
3821 return HDMI_3D_STRUCTURE_SIDE_BY_SIDE_HALF;
3822 default:
3823 return HDMI_3D_STRUCTURE_INVALID;
3824 }
3825 }
3826
3827 /**
3828 * drm_hdmi_vendor_infoframe_from_display_mode() - fill an HDMI infoframe with
3829 * data from a DRM display mode
3830 * @frame: HDMI vendor infoframe
3831 * @mode: DRM display mode
3832 *
3833 * Note that there's is a need to send HDMI vendor infoframes only when using a
3834 * 4k or stereoscopic 3D mode. So when giving any other mode as input this
3835 * function will return -EINVAL, error that can be safely ignored.
3836 *
3837 * Return: 0 on success or a negative error code on failure.
3838 */
3839 int
drm_hdmi_vendor_infoframe_from_display_mode(struct hdmi_vendor_infoframe * frame,const struct drm_display_mode * mode)3840 drm_hdmi_vendor_infoframe_from_display_mode(struct hdmi_vendor_infoframe *frame,
3841 const struct drm_display_mode *mode)
3842 {
3843 int err;
3844 u32 s3d_flags;
3845 u8 vic;
3846
3847 if (!frame || !mode)
3848 return -EINVAL;
3849
3850 vic = drm_match_hdmi_mode(mode);
3851 s3d_flags = mode->flags & DRM_MODE_FLAG_3D_MASK;
3852
3853 if (!vic && !s3d_flags)
3854 return -EINVAL;
3855
3856 if (vic && s3d_flags)
3857 return -EINVAL;
3858
3859 err = hdmi_vendor_infoframe_init(frame);
3860 if (err < 0)
3861 return err;
3862
3863 if (vic)
3864 frame->vic = vic;
3865 else
3866 frame->s3d_struct = s3d_structure_from_display_mode(mode);
3867
3868 return 0;
3869 }
3870 EXPORT_SYMBOL(drm_hdmi_vendor_infoframe_from_display_mode);
3871