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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 <linux/vga_switcheroo.h>
36#include <drm/drmP.h>
37#include <drm/drm_edid.h>
38#include <drm/drm_displayid.h>
39
40#define version_greater(edid, maj, min) \
41 (((edid)->version > (maj)) || \
42 ((edid)->version == (maj) && (edid)->revision > (min)))
43
44#define EDID_EST_TIMINGS 16
45#define EDID_STD_TIMINGS 8
46#define EDID_DETAILED_TIMINGS 4
47
48/*
49 * EDID blocks out in the wild have a variety of bugs, try to collect
50 * them here (note that userspace may work around broken monitors first,
51 * but fixes should make their way here so that the kernel "just works"
52 * on as many displays as possible).
53 */
54
55/* First detailed mode wrong, use largest 60Hz mode */
56#define EDID_QUIRK_PREFER_LARGE_60 (1 << 0)
57/* Reported 135MHz pixel clock is too high, needs adjustment */
58#define EDID_QUIRK_135_CLOCK_TOO_HIGH (1 << 1)
59/* Prefer the largest mode at 75 Hz */
60#define EDID_QUIRK_PREFER_LARGE_75 (1 << 2)
61/* Detail timing is in cm not mm */
62#define EDID_QUIRK_DETAILED_IN_CM (1 << 3)
63/* Detailed timing descriptors have bogus size values, so just take the
64 * maximum size and use that.
65 */
66#define EDID_QUIRK_DETAILED_USE_MAXIMUM_SIZE (1 << 4)
67/* Monitor forgot to set the first detailed is preferred bit. */
68#define EDID_QUIRK_FIRST_DETAILED_PREFERRED (1 << 5)
69/* use +hsync +vsync for detailed mode */
70#define EDID_QUIRK_DETAILED_SYNC_PP (1 << 6)
71/* Force reduced-blanking timings for detailed modes */
72#define EDID_QUIRK_FORCE_REDUCED_BLANKING (1 << 7)
73/* Force 8bpc */
74#define EDID_QUIRK_FORCE_8BPC (1 << 8)
75/* Force 12bpc */
76#define EDID_QUIRK_FORCE_12BPC (1 << 9)
77
78struct detailed_mode_closure {
79 struct drm_connector *connector;
80 struct edid *edid;
81 bool preferred;
82 u32 quirks;
83 int modes;
84};
85
86#define LEVEL_DMT 0
87#define LEVEL_GTF 1
88#define LEVEL_GTF2 2
89#define LEVEL_CVT 3
90
91static struct edid_quirk {
92 char vendor[4];
93 int product_id;
94 u32 quirks;
95} edid_quirk_list[] = {
96 /* Acer AL1706 */
97 { "ACR", 44358, EDID_QUIRK_PREFER_LARGE_60 },
98 /* Acer F51 */
99 { "API", 0x7602, EDID_QUIRK_PREFER_LARGE_60 },
100 /* Unknown Acer */
101 { "ACR", 2423, EDID_QUIRK_FIRST_DETAILED_PREFERRED },
102
103 /* Belinea 10 15 55 */
104 { "MAX", 1516, EDID_QUIRK_PREFER_LARGE_60 },
105 { "MAX", 0x77e, EDID_QUIRK_PREFER_LARGE_60 },
106
107 /* Envision Peripherals, Inc. EN-7100e */
108 { "EPI", 59264, EDID_QUIRK_135_CLOCK_TOO_HIGH },
109 /* Envision EN2028 */
110 { "EPI", 8232, EDID_QUIRK_PREFER_LARGE_60 },
111
112 /* Funai Electronics PM36B */
113 { "FCM", 13600, EDID_QUIRK_PREFER_LARGE_75 |
114 EDID_QUIRK_DETAILED_IN_CM },
115
116 /* LG Philips LCD LP154W01-A5 */
117 { "LPL", 0, EDID_QUIRK_DETAILED_USE_MAXIMUM_SIZE },
118 { "LPL", 0x2a00, EDID_QUIRK_DETAILED_USE_MAXIMUM_SIZE },
119
120 /* Philips 107p5 CRT */
121 { "PHL", 57364, EDID_QUIRK_FIRST_DETAILED_PREFERRED },
122
123 /* Proview AY765C */
124 { "PTS", 765, EDID_QUIRK_FIRST_DETAILED_PREFERRED },
125
126 /* Samsung SyncMaster 205BW. Note: irony */
127 { "SAM", 541, EDID_QUIRK_DETAILED_SYNC_PP },
128 /* Samsung SyncMaster 22[5-6]BW */
129 { "SAM", 596, EDID_QUIRK_PREFER_LARGE_60 },
130 { "SAM", 638, EDID_QUIRK_PREFER_LARGE_60 },
131
132 /* Sony PVM-2541A does up to 12 bpc, but only reports max 8 bpc */
133 { "SNY", 0x2541, EDID_QUIRK_FORCE_12BPC },
134
135 /* ViewSonic VA2026w */
136 { "VSC", 5020, EDID_QUIRK_FORCE_REDUCED_BLANKING },
137
138 /* Medion MD 30217 PG */
139 { "MED", 0x7b8, EDID_QUIRK_PREFER_LARGE_75 },
140
141 /* Panel in Samsung NP700G7A-S01PL notebook reports 6bpc */
142 { "SEC", 0xd033, EDID_QUIRK_FORCE_8BPC },
143};
144
145/*
146 * Autogenerated from the DMT spec.
147 * This table is copied from xfree86/modes/xf86EdidModes.c.
148 */
149static const struct drm_display_mode drm_dmt_modes[] = {
150 /* 0x01 - 640x350@85Hz */
151 { DRM_MODE("640x350", DRM_MODE_TYPE_DRIVER, 31500, 640, 672,
152 736, 832, 0, 350, 382, 385, 445, 0,
153 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC) },
154 /* 0x02 - 640x400@85Hz */
155 { DRM_MODE("640x400", DRM_MODE_TYPE_DRIVER, 31500, 640, 672,
156 736, 832, 0, 400, 401, 404, 445, 0,
157 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
158 /* 0x03 - 720x400@85Hz */
159 { DRM_MODE("720x400", DRM_MODE_TYPE_DRIVER, 35500, 720, 756,
160 828, 936, 0, 400, 401, 404, 446, 0,
161 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
162 /* 0x04 - 640x480@60Hz */
163 { DRM_MODE("640x480", DRM_MODE_TYPE_DRIVER, 25175, 640, 656,
164 752, 800, 0, 480, 490, 492, 525, 0,
165 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC) },
166 /* 0x05 - 640x480@72Hz */
167 { DRM_MODE("640x480", DRM_MODE_TYPE_DRIVER, 31500, 640, 664,
168 704, 832, 0, 480, 489, 492, 520, 0,
169 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC) },
170 /* 0x06 - 640x480@75Hz */
171 { DRM_MODE("640x480", DRM_MODE_TYPE_DRIVER, 31500, 640, 656,
172 720, 840, 0, 480, 481, 484, 500, 0,
173 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC) },
174 /* 0x07 - 640x480@85Hz */
175 { DRM_MODE("640x480", DRM_MODE_TYPE_DRIVER, 36000, 640, 696,
176 752, 832, 0, 480, 481, 484, 509, 0,
177 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC) },
178 /* 0x08 - 800x600@56Hz */
179 { DRM_MODE("800x600", DRM_MODE_TYPE_DRIVER, 36000, 800, 824,
180 896, 1024, 0, 600, 601, 603, 625, 0,
181 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
182 /* 0x09 - 800x600@60Hz */
183 { DRM_MODE("800x600", DRM_MODE_TYPE_DRIVER, 40000, 800, 840,
184 968, 1056, 0, 600, 601, 605, 628, 0,
185 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
186 /* 0x0a - 800x600@72Hz */
187 { DRM_MODE("800x600", DRM_MODE_TYPE_DRIVER, 50000, 800, 856,
188 976, 1040, 0, 600, 637, 643, 666, 0,
189 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
190 /* 0x0b - 800x600@75Hz */
191 { DRM_MODE("800x600", DRM_MODE_TYPE_DRIVER, 49500, 800, 816,
192 896, 1056, 0, 600, 601, 604, 625, 0,
193 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
194 /* 0x0c - 800x600@85Hz */
195 { DRM_MODE("800x600", DRM_MODE_TYPE_DRIVER, 56250, 800, 832,
196 896, 1048, 0, 600, 601, 604, 631, 0,
197 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
198 /* 0x0d - 800x600@120Hz RB */
199 { DRM_MODE("800x600", DRM_MODE_TYPE_DRIVER, 73250, 800, 848,
200 880, 960, 0, 600, 603, 607, 636, 0,
201 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC) },
202 /* 0x0e - 848x480@60Hz */
203 { DRM_MODE("848x480", DRM_MODE_TYPE_DRIVER, 33750, 848, 864,
204 976, 1088, 0, 480, 486, 494, 517, 0,
205 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
206 /* 0x0f - 1024x768@43Hz, interlace */
207 { DRM_MODE("1024x768i", DRM_MODE_TYPE_DRIVER, 44900, 1024, 1032,
208 1208, 1264, 0, 768, 768, 776, 817, 0,
209 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC |
210 DRM_MODE_FLAG_INTERLACE) },
211 /* 0x10 - 1024x768@60Hz */
212 { DRM_MODE("1024x768", DRM_MODE_TYPE_DRIVER, 65000, 1024, 1048,
213 1184, 1344, 0, 768, 771, 777, 806, 0,
214 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC) },
215 /* 0x11 - 1024x768@70Hz */
216 { DRM_MODE("1024x768", DRM_MODE_TYPE_DRIVER, 75000, 1024, 1048,
217 1184, 1328, 0, 768, 771, 777, 806, 0,
218 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC) },
219 /* 0x12 - 1024x768@75Hz */
220 { DRM_MODE("1024x768", DRM_MODE_TYPE_DRIVER, 78750, 1024, 1040,
221 1136, 1312, 0, 768, 769, 772, 800, 0,
222 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
223 /* 0x13 - 1024x768@85Hz */
224 { DRM_MODE("1024x768", DRM_MODE_TYPE_DRIVER, 94500, 1024, 1072,
225 1168, 1376, 0, 768, 769, 772, 808, 0,
226 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
227 /* 0x14 - 1024x768@120Hz RB */
228 { DRM_MODE("1024x768", DRM_MODE_TYPE_DRIVER, 115500, 1024, 1072,
229 1104, 1184, 0, 768, 771, 775, 813, 0,
230 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC) },
231 /* 0x15 - 1152x864@75Hz */
232 { DRM_MODE("1152x864", DRM_MODE_TYPE_DRIVER, 108000, 1152, 1216,
233 1344, 1600, 0, 864, 865, 868, 900, 0,
234 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
235 /* 0x55 - 1280x720@60Hz */
236 { DRM_MODE("1280x720", DRM_MODE_TYPE_DRIVER, 74250, 1280, 1390,
237 1430, 1650, 0, 720, 725, 730, 750, 0,
238 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
239 /* 0x16 - 1280x768@60Hz RB */
240 { DRM_MODE("1280x768", DRM_MODE_TYPE_DRIVER, 68250, 1280, 1328,
241 1360, 1440, 0, 768, 771, 778, 790, 0,
242 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC) },
243 /* 0x17 - 1280x768@60Hz */
244 { DRM_MODE("1280x768", DRM_MODE_TYPE_DRIVER, 79500, 1280, 1344,
245 1472, 1664, 0, 768, 771, 778, 798, 0,
246 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
247 /* 0x18 - 1280x768@75Hz */
248 { DRM_MODE("1280x768", DRM_MODE_TYPE_DRIVER, 102250, 1280, 1360,
249 1488, 1696, 0, 768, 771, 778, 805, 0,
250 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
251 /* 0x19 - 1280x768@85Hz */
252 { DRM_MODE("1280x768", DRM_MODE_TYPE_DRIVER, 117500, 1280, 1360,
253 1496, 1712, 0, 768, 771, 778, 809, 0,
254 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
255 /* 0x1a - 1280x768@120Hz RB */
256 { DRM_MODE("1280x768", DRM_MODE_TYPE_DRIVER, 140250, 1280, 1328,
257 1360, 1440, 0, 768, 771, 778, 813, 0,
258 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC) },
259 /* 0x1b - 1280x800@60Hz RB */
260 { DRM_MODE("1280x800", DRM_MODE_TYPE_DRIVER, 71000, 1280, 1328,
261 1360, 1440, 0, 800, 803, 809, 823, 0,
262 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC) },
263 /* 0x1c - 1280x800@60Hz */
264 { DRM_MODE("1280x800", DRM_MODE_TYPE_DRIVER, 83500, 1280, 1352,
265 1480, 1680, 0, 800, 803, 809, 831, 0,
266 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
267 /* 0x1d - 1280x800@75Hz */
268 { DRM_MODE("1280x800", DRM_MODE_TYPE_DRIVER, 106500, 1280, 1360,
269 1488, 1696, 0, 800, 803, 809, 838, 0,
270 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
271 /* 0x1e - 1280x800@85Hz */
272 { DRM_MODE("1280x800", DRM_MODE_TYPE_DRIVER, 122500, 1280, 1360,
273 1496, 1712, 0, 800, 803, 809, 843, 0,
274 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
275 /* 0x1f - 1280x800@120Hz RB */
276 { DRM_MODE("1280x800", DRM_MODE_TYPE_DRIVER, 146250, 1280, 1328,
277 1360, 1440, 0, 800, 803, 809, 847, 0,
278 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC) },
279 /* 0x20 - 1280x960@60Hz */
280 { DRM_MODE("1280x960", DRM_MODE_TYPE_DRIVER, 108000, 1280, 1376,
281 1488, 1800, 0, 960, 961, 964, 1000, 0,
282 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
283 /* 0x21 - 1280x960@85Hz */
284 { DRM_MODE("1280x960", DRM_MODE_TYPE_DRIVER, 148500, 1280, 1344,
285 1504, 1728, 0, 960, 961, 964, 1011, 0,
286 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
287 /* 0x22 - 1280x960@120Hz RB */
288 { DRM_MODE("1280x960", DRM_MODE_TYPE_DRIVER, 175500, 1280, 1328,
289 1360, 1440, 0, 960, 963, 967, 1017, 0,
290 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC) },
291 /* 0x23 - 1280x1024@60Hz */
292 { DRM_MODE("1280x1024", DRM_MODE_TYPE_DRIVER, 108000, 1280, 1328,
293 1440, 1688, 0, 1024, 1025, 1028, 1066, 0,
294 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
295 /* 0x24 - 1280x1024@75Hz */
296 { DRM_MODE("1280x1024", DRM_MODE_TYPE_DRIVER, 135000, 1280, 1296,
297 1440, 1688, 0, 1024, 1025, 1028, 1066, 0,
298 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
299 /* 0x25 - 1280x1024@85Hz */
300 { DRM_MODE("1280x1024", DRM_MODE_TYPE_DRIVER, 157500, 1280, 1344,
301 1504, 1728, 0, 1024, 1025, 1028, 1072, 0,
302 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
303 /* 0x26 - 1280x1024@120Hz RB */
304 { DRM_MODE("1280x1024", DRM_MODE_TYPE_DRIVER, 187250, 1280, 1328,
305 1360, 1440, 0, 1024, 1027, 1034, 1084, 0,
306 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC) },
307 /* 0x27 - 1360x768@60Hz */
308 { DRM_MODE("1360x768", DRM_MODE_TYPE_DRIVER, 85500, 1360, 1424,
309 1536, 1792, 0, 768, 771, 777, 795, 0,
310 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
311 /* 0x28 - 1360x768@120Hz RB */
312 { DRM_MODE("1360x768", DRM_MODE_TYPE_DRIVER, 148250, 1360, 1408,
313 1440, 1520, 0, 768, 771, 776, 813, 0,
314 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC) },
315 /* 0x51 - 1366x768@60Hz */
316 { DRM_MODE("1366x768", DRM_MODE_TYPE_DRIVER, 85500, 1366, 1436,
317 1579, 1792, 0, 768, 771, 774, 798, 0,
318 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
319 /* 0x56 - 1366x768@60Hz */
320 { DRM_MODE("1366x768", DRM_MODE_TYPE_DRIVER, 72000, 1366, 1380,
321 1436, 1500, 0, 768, 769, 772, 800, 0,
322 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
323 /* 0x29 - 1400x1050@60Hz RB */
324 { DRM_MODE("1400x1050", DRM_MODE_TYPE_DRIVER, 101000, 1400, 1448,
325 1480, 1560, 0, 1050, 1053, 1057, 1080, 0,
326 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC) },
327 /* 0x2a - 1400x1050@60Hz */
328 { DRM_MODE("1400x1050", DRM_MODE_TYPE_DRIVER, 121750, 1400, 1488,
329 1632, 1864, 0, 1050, 1053, 1057, 1089, 0,
330 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
331 /* 0x2b - 1400x1050@75Hz */
332 { DRM_MODE("1400x1050", DRM_MODE_TYPE_DRIVER, 156000, 1400, 1504,
333 1648, 1896, 0, 1050, 1053, 1057, 1099, 0,
334 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
335 /* 0x2c - 1400x1050@85Hz */
336 { DRM_MODE("1400x1050", DRM_MODE_TYPE_DRIVER, 179500, 1400, 1504,
337 1656, 1912, 0, 1050, 1053, 1057, 1105, 0,
338 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
339 /* 0x2d - 1400x1050@120Hz RB */
340 { DRM_MODE("1400x1050", DRM_MODE_TYPE_DRIVER, 208000, 1400, 1448,
341 1480, 1560, 0, 1050, 1053, 1057, 1112, 0,
342 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC) },
343 /* 0x2e - 1440x900@60Hz RB */
344 { DRM_MODE("1440x900", DRM_MODE_TYPE_DRIVER, 88750, 1440, 1488,
345 1520, 1600, 0, 900, 903, 909, 926, 0,
346 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC) },
347 /* 0x2f - 1440x900@60Hz */
348 { DRM_MODE("1440x900", DRM_MODE_TYPE_DRIVER, 106500, 1440, 1520,
349 1672, 1904, 0, 900, 903, 909, 934, 0,
350 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
351 /* 0x30 - 1440x900@75Hz */
352 { DRM_MODE("1440x900", DRM_MODE_TYPE_DRIVER, 136750, 1440, 1536,
353 1688, 1936, 0, 900, 903, 909, 942, 0,
354 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
355 /* 0x31 - 1440x900@85Hz */
356 { DRM_MODE("1440x900", DRM_MODE_TYPE_DRIVER, 157000, 1440, 1544,
357 1696, 1952, 0, 900, 903, 909, 948, 0,
358 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
359 /* 0x32 - 1440x900@120Hz RB */
360 { DRM_MODE("1440x900", DRM_MODE_TYPE_DRIVER, 182750, 1440, 1488,
361 1520, 1600, 0, 900, 903, 909, 953, 0,
362 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC) },
363 /* 0x53 - 1600x900@60Hz */
364 { DRM_MODE("1600x900", DRM_MODE_TYPE_DRIVER, 108000, 1600, 1624,
365 1704, 1800, 0, 900, 901, 904, 1000, 0,
366 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
367 /* 0x33 - 1600x1200@60Hz */
368 { DRM_MODE("1600x1200", DRM_MODE_TYPE_DRIVER, 162000, 1600, 1664,
369 1856, 2160, 0, 1200, 1201, 1204, 1250, 0,
370 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
371 /* 0x34 - 1600x1200@65Hz */
372 { DRM_MODE("1600x1200", DRM_MODE_TYPE_DRIVER, 175500, 1600, 1664,
373 1856, 2160, 0, 1200, 1201, 1204, 1250, 0,
374 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
375 /* 0x35 - 1600x1200@70Hz */
376 { DRM_MODE("1600x1200", DRM_MODE_TYPE_DRIVER, 189000, 1600, 1664,
377 1856, 2160, 0, 1200, 1201, 1204, 1250, 0,
378 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
379 /* 0x36 - 1600x1200@75Hz */
380 { DRM_MODE("1600x1200", DRM_MODE_TYPE_DRIVER, 202500, 1600, 1664,
381 1856, 2160, 0, 1200, 1201, 1204, 1250, 0,
382 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
383 /* 0x37 - 1600x1200@85Hz */
384 { DRM_MODE("1600x1200", DRM_MODE_TYPE_DRIVER, 229500, 1600, 1664,
385 1856, 2160, 0, 1200, 1201, 1204, 1250, 0,
386 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
387 /* 0x38 - 1600x1200@120Hz RB */
388 { DRM_MODE("1600x1200", DRM_MODE_TYPE_DRIVER, 268250, 1600, 1648,
389 1680, 1760, 0, 1200, 1203, 1207, 1271, 0,
390 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC) },
391 /* 0x39 - 1680x1050@60Hz RB */
392 { DRM_MODE("1680x1050", DRM_MODE_TYPE_DRIVER, 119000, 1680, 1728,
393 1760, 1840, 0, 1050, 1053, 1059, 1080, 0,
394 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC) },
395 /* 0x3a - 1680x1050@60Hz */
396 { DRM_MODE("1680x1050", DRM_MODE_TYPE_DRIVER, 146250, 1680, 1784,
397 1960, 2240, 0, 1050, 1053, 1059, 1089, 0,
398 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
399 /* 0x3b - 1680x1050@75Hz */
400 { DRM_MODE("1680x1050", DRM_MODE_TYPE_DRIVER, 187000, 1680, 1800,
401 1976, 2272, 0, 1050, 1053, 1059, 1099, 0,
402 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
403 /* 0x3c - 1680x1050@85Hz */
404 { DRM_MODE("1680x1050", DRM_MODE_TYPE_DRIVER, 214750, 1680, 1808,
405 1984, 2288, 0, 1050, 1053, 1059, 1105, 0,
406 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
407 /* 0x3d - 1680x1050@120Hz RB */
408 { DRM_MODE("1680x1050", DRM_MODE_TYPE_DRIVER, 245500, 1680, 1728,
409 1760, 1840, 0, 1050, 1053, 1059, 1112, 0,
410 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC) },
411 /* 0x3e - 1792x1344@60Hz */
412 { DRM_MODE("1792x1344", DRM_MODE_TYPE_DRIVER, 204750, 1792, 1920,
413 2120, 2448, 0, 1344, 1345, 1348, 1394, 0,
414 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
415 /* 0x3f - 1792x1344@75Hz */
416 { DRM_MODE("1792x1344", DRM_MODE_TYPE_DRIVER, 261000, 1792, 1888,
417 2104, 2456, 0, 1344, 1345, 1348, 1417, 0,
418 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
419 /* 0x40 - 1792x1344@120Hz RB */
420 { DRM_MODE("1792x1344", DRM_MODE_TYPE_DRIVER, 333250, 1792, 1840,
421 1872, 1952, 0, 1344, 1347, 1351, 1423, 0,
422 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC) },
423 /* 0x41 - 1856x1392@60Hz */
424 { DRM_MODE("1856x1392", DRM_MODE_TYPE_DRIVER, 218250, 1856, 1952,
425 2176, 2528, 0, 1392, 1393, 1396, 1439, 0,
426 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
427 /* 0x42 - 1856x1392@75Hz */
428 { DRM_MODE("1856x1392", DRM_MODE_TYPE_DRIVER, 288000, 1856, 1984,
429 2208, 2560, 0, 1392, 1393, 1396, 1500, 0,
430 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
431 /* 0x43 - 1856x1392@120Hz RB */
432 { DRM_MODE("1856x1392", DRM_MODE_TYPE_DRIVER, 356500, 1856, 1904,
433 1936, 2016, 0, 1392, 1395, 1399, 1474, 0,
434 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC) },
435 /* 0x52 - 1920x1080@60Hz */
436 { DRM_MODE("1920x1080", DRM_MODE_TYPE_DRIVER, 148500, 1920, 2008,
437 2052, 2200, 0, 1080, 1084, 1089, 1125, 0,
438 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC) },
439 /* 0x44 - 1920x1200@60Hz RB */
440 { DRM_MODE("1920x1200", DRM_MODE_TYPE_DRIVER, 154000, 1920, 1968,
441 2000, 2080, 0, 1200, 1203, 1209, 1235, 0,
442 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC) },
443 /* 0x45 - 1920x1200@60Hz */
444 { DRM_MODE("1920x1200", DRM_MODE_TYPE_DRIVER, 193250, 1920, 2056,
445 2256, 2592, 0, 1200, 1203, 1209, 1245, 0,
446 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
447 /* 0x46 - 1920x1200@75Hz */
448 { DRM_MODE("1920x1200", DRM_MODE_TYPE_DRIVER, 245250, 1920, 2056,
449 2264, 2608, 0, 1200, 1203, 1209, 1255, 0,
450 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
451 /* 0x47 - 1920x1200@85Hz */
452 { DRM_MODE("1920x1200", DRM_MODE_TYPE_DRIVER, 281250, 1920, 2064,
453 2272, 2624, 0, 1200, 1203, 1209, 1262, 0,
454 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
455 /* 0x48 - 1920x1200@120Hz RB */
456 { DRM_MODE("1920x1200", DRM_MODE_TYPE_DRIVER, 317000, 1920, 1968,
457 2000, 2080, 0, 1200, 1203, 1209, 1271, 0,
458 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC) },
459 /* 0x49 - 1920x1440@60Hz */
460 { DRM_MODE("1920x1440", DRM_MODE_TYPE_DRIVER, 234000, 1920, 2048,
461 2256, 2600, 0, 1440, 1441, 1444, 1500, 0,
462 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
463 /* 0x4a - 1920x1440@75Hz */
464 { DRM_MODE("1920x1440", DRM_MODE_TYPE_DRIVER, 297000, 1920, 2064,
465 2288, 2640, 0, 1440, 1441, 1444, 1500, 0,
466 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
467 /* 0x4b - 1920x1440@120Hz RB */
468 { DRM_MODE("1920x1440", DRM_MODE_TYPE_DRIVER, 380500, 1920, 1968,
469 2000, 2080, 0, 1440, 1443, 1447, 1525, 0,
470 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC) },
471 /* 0x54 - 2048x1152@60Hz */
472 { DRM_MODE("2048x1152", DRM_MODE_TYPE_DRIVER, 162000, 2048, 2074,
473 2154, 2250, 0, 1152, 1153, 1156, 1200, 0,
474 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
475 /* 0x4c - 2560x1600@60Hz RB */
476 { DRM_MODE("2560x1600", DRM_MODE_TYPE_DRIVER, 268500, 2560, 2608,
477 2640, 2720, 0, 1600, 1603, 1609, 1646, 0,
478 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC) },
479 /* 0x4d - 2560x1600@60Hz */
480 { DRM_MODE("2560x1600", DRM_MODE_TYPE_DRIVER, 348500, 2560, 2752,
481 3032, 3504, 0, 1600, 1603, 1609, 1658, 0,
482 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
483 /* 0x4e - 2560x1600@75Hz */
484 { DRM_MODE("2560x1600", DRM_MODE_TYPE_DRIVER, 443250, 2560, 2768,
485 3048, 3536, 0, 1600, 1603, 1609, 1672, 0,
486 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
487 /* 0x4f - 2560x1600@85Hz */
488 { DRM_MODE("2560x1600", DRM_MODE_TYPE_DRIVER, 505250, 2560, 2768,
489 3048, 3536, 0, 1600, 1603, 1609, 1682, 0,
490 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
491 /* 0x50 - 2560x1600@120Hz RB */
492 { DRM_MODE("2560x1600", DRM_MODE_TYPE_DRIVER, 552750, 2560, 2608,
493 2640, 2720, 0, 1600, 1603, 1609, 1694, 0,
494 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC) },
495 /* 0x57 - 4096x2160@60Hz RB */
496 { DRM_MODE("4096x2160", DRM_MODE_TYPE_DRIVER, 556744, 4096, 4104,
497 4136, 4176, 0, 2160, 2208, 2216, 2222, 0,
498 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC) },
499 /* 0x58 - 4096x2160@59.94Hz RB */
500 { DRM_MODE("4096x2160", DRM_MODE_TYPE_DRIVER, 556188, 4096, 4104,
501 4136, 4176, 0, 2160, 2208, 2216, 2222, 0,
502 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC) },
503};
504
505/*
506 * These more or less come from the DMT spec. The 720x400 modes are
507 * inferred from historical 80x25 practice. The 640x480@67 and 832x624@75
508 * modes are old-school Mac modes. The EDID spec says the 1152x864@75 mode
509 * should be 1152x870, again for the Mac, but instead we use the x864 DMT
510 * mode.
511 *
512 * The DMT modes have been fact-checked; the rest are mild guesses.
513 */
514static const struct drm_display_mode edid_est_modes[] = {
515 { DRM_MODE("800x600", DRM_MODE_TYPE_DRIVER, 40000, 800, 840,
516 968, 1056, 0, 600, 601, 605, 628, 0,
517 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) }, /* 800x600@60Hz */
518 { DRM_MODE("800x600", DRM_MODE_TYPE_DRIVER, 36000, 800, 824,
519 896, 1024, 0, 600, 601, 603, 625, 0,
520 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) }, /* 800x600@56Hz */
521 { DRM_MODE("640x480", DRM_MODE_TYPE_DRIVER, 31500, 640, 656,
522 720, 840, 0, 480, 481, 484, 500, 0,
523 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC) }, /* 640x480@75Hz */
524 { DRM_MODE("640x480", DRM_MODE_TYPE_DRIVER, 31500, 640, 664,
525 704, 832, 0, 480, 489, 492, 520, 0,
526 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC) }, /* 640x480@72Hz */
527 { DRM_MODE("640x480", DRM_MODE_TYPE_DRIVER, 30240, 640, 704,
528 768, 864, 0, 480, 483, 486, 525, 0,
529 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC) }, /* 640x480@67Hz */
530 { DRM_MODE("640x480", DRM_MODE_TYPE_DRIVER, 25175, 640, 656,
531 752, 800, 0, 480, 490, 492, 525, 0,
532 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC) }, /* 640x480@60Hz */
533 { DRM_MODE("720x400", DRM_MODE_TYPE_DRIVER, 35500, 720, 738,
534 846, 900, 0, 400, 421, 423, 449, 0,
535 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC) }, /* 720x400@88Hz */
536 { DRM_MODE("720x400", DRM_MODE_TYPE_DRIVER, 28320, 720, 738,
537 846, 900, 0, 400, 412, 414, 449, 0,
538 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) }, /* 720x400@70Hz */
539 { DRM_MODE("1280x1024", DRM_MODE_TYPE_DRIVER, 135000, 1280, 1296,
540 1440, 1688, 0, 1024, 1025, 1028, 1066, 0,
541 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) }, /* 1280x1024@75Hz */
542 { DRM_MODE("1024x768", DRM_MODE_TYPE_DRIVER, 78750, 1024, 1040,
543 1136, 1312, 0, 768, 769, 772, 800, 0,
544 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) }, /* 1024x768@75Hz */
545 { DRM_MODE("1024x768", DRM_MODE_TYPE_DRIVER, 75000, 1024, 1048,
546 1184, 1328, 0, 768, 771, 777, 806, 0,
547 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC) }, /* 1024x768@70Hz */
548 { DRM_MODE("1024x768", DRM_MODE_TYPE_DRIVER, 65000, 1024, 1048,
549 1184, 1344, 0, 768, 771, 777, 806, 0,
550 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC) }, /* 1024x768@60Hz */
551 { DRM_MODE("1024x768i", DRM_MODE_TYPE_DRIVER,44900, 1024, 1032,
552 1208, 1264, 0, 768, 768, 776, 817, 0,
553 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC | DRM_MODE_FLAG_INTERLACE) }, /* 1024x768@43Hz */
554 { DRM_MODE("832x624", DRM_MODE_TYPE_DRIVER, 57284, 832, 864,
555 928, 1152, 0, 624, 625, 628, 667, 0,
556 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC) }, /* 832x624@75Hz */
557 { DRM_MODE("800x600", DRM_MODE_TYPE_DRIVER, 49500, 800, 816,
558 896, 1056, 0, 600, 601, 604, 625, 0,
559 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) }, /* 800x600@75Hz */
560 { DRM_MODE("800x600", DRM_MODE_TYPE_DRIVER, 50000, 800, 856,
561 976, 1040, 0, 600, 637, 643, 666, 0,
562 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) }, /* 800x600@72Hz */
563 { DRM_MODE("1152x864", DRM_MODE_TYPE_DRIVER, 108000, 1152, 1216,
564 1344, 1600, 0, 864, 865, 868, 900, 0,
565 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) }, /* 1152x864@75Hz */
566};
567
568struct minimode {
569 short w;
570 short h;
571 short r;
572 short rb;
573};
574
575static const struct minimode est3_modes[] = {
576 /* byte 6 */
577 { 640, 350, 85, 0 },
578 { 640, 400, 85, 0 },
579 { 720, 400, 85, 0 },
580 { 640, 480, 85, 0 },
581 { 848, 480, 60, 0 },
582 { 800, 600, 85, 0 },
583 { 1024, 768, 85, 0 },
584 { 1152, 864, 75, 0 },
585 /* byte 7 */
586 { 1280, 768, 60, 1 },
587 { 1280, 768, 60, 0 },
588 { 1280, 768, 75, 0 },
589 { 1280, 768, 85, 0 },
590 { 1280, 960, 60, 0 },
591 { 1280, 960, 85, 0 },
592 { 1280, 1024, 60, 0 },
593 { 1280, 1024, 85, 0 },
594 /* byte 8 */
595 { 1360, 768, 60, 0 },
596 { 1440, 900, 60, 1 },
597 { 1440, 900, 60, 0 },
598 { 1440, 900, 75, 0 },
599 { 1440, 900, 85, 0 },
600 { 1400, 1050, 60, 1 },
601 { 1400, 1050, 60, 0 },
602 { 1400, 1050, 75, 0 },
603 /* byte 9 */
604 { 1400, 1050, 85, 0 },
605 { 1680, 1050, 60, 1 },
606 { 1680, 1050, 60, 0 },
607 { 1680, 1050, 75, 0 },
608 { 1680, 1050, 85, 0 },
609 { 1600, 1200, 60, 0 },
610 { 1600, 1200, 65, 0 },
611 { 1600, 1200, 70, 0 },
612 /* byte 10 */
613 { 1600, 1200, 75, 0 },
614 { 1600, 1200, 85, 0 },
615 { 1792, 1344, 60, 0 },
616 { 1792, 1344, 75, 0 },
617 { 1856, 1392, 60, 0 },
618 { 1856, 1392, 75, 0 },
619 { 1920, 1200, 60, 1 },
620 { 1920, 1200, 60, 0 },
621 /* byte 11 */
622 { 1920, 1200, 75, 0 },
623 { 1920, 1200, 85, 0 },
624 { 1920, 1440, 60, 0 },
625 { 1920, 1440, 75, 0 },
626};
627
628static const struct minimode extra_modes[] = {
629 { 1024, 576, 60, 0 },
630 { 1366, 768, 60, 0 },
631 { 1600, 900, 60, 0 },
632 { 1680, 945, 60, 0 },
633 { 1920, 1080, 60, 0 },
634 { 2048, 1152, 60, 0 },
635 { 2048, 1536, 60, 0 },
636};
637
638/*
639 * Probably taken from CEA-861 spec.
640 * This table is converted from xorg's hw/xfree86/modes/xf86EdidModes.c.
641 *
642 * Index using the VIC.
643 */
644static const struct drm_display_mode edid_cea_modes[] = {
645 /* 0 - dummy, VICs start at 1 */
646 { },
647 /* 1 - 640x480@60Hz */
648 { DRM_MODE("640x480", DRM_MODE_TYPE_DRIVER, 25175, 640, 656,
649 752, 800, 0, 480, 490, 492, 525, 0,
650 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC),
651 .vrefresh = 60, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_4_3, },
652 /* 2 - 720x480@60Hz */
653 { DRM_MODE("720x480", DRM_MODE_TYPE_DRIVER, 27000, 720, 736,
654 798, 858, 0, 480, 489, 495, 525, 0,
655 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC),
656 .vrefresh = 60, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_4_3, },
657 /* 3 - 720x480@60Hz */
658 { DRM_MODE("720x480", DRM_MODE_TYPE_DRIVER, 27000, 720, 736,
659 798, 858, 0, 480, 489, 495, 525, 0,
660 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC),
661 .vrefresh = 60, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_16_9, },
662 /* 4 - 1280x720@60Hz */
663 { DRM_MODE("1280x720", DRM_MODE_TYPE_DRIVER, 74250, 1280, 1390,
664 1430, 1650, 0, 720, 725, 730, 750, 0,
665 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC),
666 .vrefresh = 60, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_16_9, },
667 /* 5 - 1920x1080i@60Hz */
668 { DRM_MODE("1920x1080i", DRM_MODE_TYPE_DRIVER, 74250, 1920, 2008,
669 2052, 2200, 0, 1080, 1084, 1094, 1125, 0,
670 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC |
671 DRM_MODE_FLAG_INTERLACE),
672 .vrefresh = 60, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_16_9, },
673 /* 6 - 720(1440)x480i@60Hz */
674 { DRM_MODE("720x480i", DRM_MODE_TYPE_DRIVER, 13500, 720, 739,
675 801, 858, 0, 480, 488, 494, 525, 0,
676 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC |
677 DRM_MODE_FLAG_INTERLACE | DRM_MODE_FLAG_DBLCLK),
678 .vrefresh = 60, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_4_3, },
679 /* 7 - 720(1440)x480i@60Hz */
680 { DRM_MODE("720x480i", DRM_MODE_TYPE_DRIVER, 13500, 720, 739,
681 801, 858, 0, 480, 488, 494, 525, 0,
682 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC |
683 DRM_MODE_FLAG_INTERLACE | DRM_MODE_FLAG_DBLCLK),
684 .vrefresh = 60, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_16_9, },
685 /* 8 - 720(1440)x240@60Hz */
686 { DRM_MODE("720x240", DRM_MODE_TYPE_DRIVER, 13500, 720, 739,
687 801, 858, 0, 240, 244, 247, 262, 0,
688 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC |
689 DRM_MODE_FLAG_DBLCLK),
690 .vrefresh = 60, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_4_3, },
691 /* 9 - 720(1440)x240@60Hz */
692 { DRM_MODE("720x240", DRM_MODE_TYPE_DRIVER, 13500, 720, 739,
693 801, 858, 0, 240, 244, 247, 262, 0,
694 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC |
695 DRM_MODE_FLAG_DBLCLK),
696 .vrefresh = 60, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_16_9, },
697 /* 10 - 2880x480i@60Hz */
698 { DRM_MODE("2880x480i", DRM_MODE_TYPE_DRIVER, 54000, 2880, 2956,
699 3204, 3432, 0, 480, 488, 494, 525, 0,
700 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC |
701 DRM_MODE_FLAG_INTERLACE),
702 .vrefresh = 60, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_4_3, },
703 /* 11 - 2880x480i@60Hz */
704 { DRM_MODE("2880x480i", DRM_MODE_TYPE_DRIVER, 54000, 2880, 2956,
705 3204, 3432, 0, 480, 488, 494, 525, 0,
706 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC |
707 DRM_MODE_FLAG_INTERLACE),
708 .vrefresh = 60, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_16_9, },
709 /* 12 - 2880x240@60Hz */
710 { DRM_MODE("2880x240", DRM_MODE_TYPE_DRIVER, 54000, 2880, 2956,
711 3204, 3432, 0, 240, 244, 247, 262, 0,
712 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC),
713 .vrefresh = 60, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_4_3, },
714 /* 13 - 2880x240@60Hz */
715 { DRM_MODE("2880x240", DRM_MODE_TYPE_DRIVER, 54000, 2880, 2956,
716 3204, 3432, 0, 240, 244, 247, 262, 0,
717 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC),
718 .vrefresh = 60, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_16_9, },
719 /* 14 - 1440x480@60Hz */
720 { DRM_MODE("1440x480", DRM_MODE_TYPE_DRIVER, 54000, 1440, 1472,
721 1596, 1716, 0, 480, 489, 495, 525, 0,
722 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC),
723 .vrefresh = 60, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_4_3, },
724 /* 15 - 1440x480@60Hz */
725 { DRM_MODE("1440x480", DRM_MODE_TYPE_DRIVER, 54000, 1440, 1472,
726 1596, 1716, 0, 480, 489, 495, 525, 0,
727 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC),
728 .vrefresh = 60, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_16_9, },
729 /* 16 - 1920x1080@60Hz */
730 { DRM_MODE("1920x1080", DRM_MODE_TYPE_DRIVER, 148500, 1920, 2008,
731 2052, 2200, 0, 1080, 1084, 1089, 1125, 0,
732 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC),
733 .vrefresh = 60, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_16_9, },
734 /* 17 - 720x576@50Hz */
735 { DRM_MODE("720x576", DRM_MODE_TYPE_DRIVER, 27000, 720, 732,
736 796, 864, 0, 576, 581, 586, 625, 0,
737 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC),
738 .vrefresh = 50, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_4_3, },
739 /* 18 - 720x576@50Hz */
740 { DRM_MODE("720x576", DRM_MODE_TYPE_DRIVER, 27000, 720, 732,
741 796, 864, 0, 576, 581, 586, 625, 0,
742 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC),
743 .vrefresh = 50, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_16_9, },
744 /* 19 - 1280x720@50Hz */
745 { DRM_MODE("1280x720", DRM_MODE_TYPE_DRIVER, 74250, 1280, 1720,
746 1760, 1980, 0, 720, 725, 730, 750, 0,
747 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC),
748 .vrefresh = 50, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_16_9, },
749 /* 20 - 1920x1080i@50Hz */
750 { DRM_MODE("1920x1080i", DRM_MODE_TYPE_DRIVER, 74250, 1920, 2448,
751 2492, 2640, 0, 1080, 1084, 1094, 1125, 0,
752 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC |
753 DRM_MODE_FLAG_INTERLACE),
754 .vrefresh = 50, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_16_9, },
755 /* 21 - 720(1440)x576i@50Hz */
756 { DRM_MODE("720x576i", DRM_MODE_TYPE_DRIVER, 13500, 720, 732,
757 795, 864, 0, 576, 580, 586, 625, 0,
758 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC |
759 DRM_MODE_FLAG_INTERLACE | DRM_MODE_FLAG_DBLCLK),
760 .vrefresh = 50, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_4_3, },
761 /* 22 - 720(1440)x576i@50Hz */
762 { DRM_MODE("720x576i", DRM_MODE_TYPE_DRIVER, 13500, 720, 732,
763 795, 864, 0, 576, 580, 586, 625, 0,
764 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC |
765 DRM_MODE_FLAG_INTERLACE | DRM_MODE_FLAG_DBLCLK),
766 .vrefresh = 50, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_16_9, },
767 /* 23 - 720(1440)x288@50Hz */
768 { DRM_MODE("720x288", DRM_MODE_TYPE_DRIVER, 13500, 720, 732,
769 795, 864, 0, 288, 290, 293, 312, 0,
770 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC |
771 DRM_MODE_FLAG_DBLCLK),
772 .vrefresh = 50, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_4_3, },
773 /* 24 - 720(1440)x288@50Hz */
774 { DRM_MODE("720x288", DRM_MODE_TYPE_DRIVER, 13500, 720, 732,
775 795, 864, 0, 288, 290, 293, 312, 0,
776 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC |
777 DRM_MODE_FLAG_DBLCLK),
778 .vrefresh = 50, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_16_9, },
779 /* 25 - 2880x576i@50Hz */
780 { DRM_MODE("2880x576i", DRM_MODE_TYPE_DRIVER, 54000, 2880, 2928,
781 3180, 3456, 0, 576, 580, 586, 625, 0,
782 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC |
783 DRM_MODE_FLAG_INTERLACE),
784 .vrefresh = 50, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_4_3, },
785 /* 26 - 2880x576i@50Hz */
786 { DRM_MODE("2880x576i", DRM_MODE_TYPE_DRIVER, 54000, 2880, 2928,
787 3180, 3456, 0, 576, 580, 586, 625, 0,
788 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC |
789 DRM_MODE_FLAG_INTERLACE),
790 .vrefresh = 50, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_16_9, },
791 /* 27 - 2880x288@50Hz */
792 { DRM_MODE("2880x288", DRM_MODE_TYPE_DRIVER, 54000, 2880, 2928,
793 3180, 3456, 0, 288, 290, 293, 312, 0,
794 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC),
795 .vrefresh = 50, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_4_3, },
796 /* 28 - 2880x288@50Hz */
797 { DRM_MODE("2880x288", DRM_MODE_TYPE_DRIVER, 54000, 2880, 2928,
798 3180, 3456, 0, 288, 290, 293, 312, 0,
799 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC),
800 .vrefresh = 50, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_16_9, },
801 /* 29 - 1440x576@50Hz */
802 { DRM_MODE("1440x576", DRM_MODE_TYPE_DRIVER, 54000, 1440, 1464,
803 1592, 1728, 0, 576, 581, 586, 625, 0,
804 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC),
805 .vrefresh = 50, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_4_3, },
806 /* 30 - 1440x576@50Hz */
807 { DRM_MODE("1440x576", DRM_MODE_TYPE_DRIVER, 54000, 1440, 1464,
808 1592, 1728, 0, 576, 581, 586, 625, 0,
809 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC),
810 .vrefresh = 50, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_16_9, },
811 /* 31 - 1920x1080@50Hz */
812 { DRM_MODE("1920x1080", DRM_MODE_TYPE_DRIVER, 148500, 1920, 2448,
813 2492, 2640, 0, 1080, 1084, 1089, 1125, 0,
814 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC),
815 .vrefresh = 50, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_16_9, },
816 /* 32 - 1920x1080@24Hz */
817 { DRM_MODE("1920x1080", DRM_MODE_TYPE_DRIVER, 74250, 1920, 2558,
818 2602, 2750, 0, 1080, 1084, 1089, 1125, 0,
819 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC),
820 .vrefresh = 24, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_16_9, },
821 /* 33 - 1920x1080@25Hz */
822 { DRM_MODE("1920x1080", DRM_MODE_TYPE_DRIVER, 74250, 1920, 2448,
823 2492, 2640, 0, 1080, 1084, 1089, 1125, 0,
824 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC),
825 .vrefresh = 25, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_16_9, },
826 /* 34 - 1920x1080@30Hz */
827 { DRM_MODE("1920x1080", DRM_MODE_TYPE_DRIVER, 74250, 1920, 2008,
828 2052, 2200, 0, 1080, 1084, 1089, 1125, 0,
829 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC),
830 .vrefresh = 30, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_16_9, },
831 /* 35 - 2880x480@60Hz */
832 { DRM_MODE("2880x480", DRM_MODE_TYPE_DRIVER, 108000, 2880, 2944,
833 3192, 3432, 0, 480, 489, 495, 525, 0,
834 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC),
835 .vrefresh = 60, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_4_3, },
836 /* 36 - 2880x480@60Hz */
837 { DRM_MODE("2880x480", DRM_MODE_TYPE_DRIVER, 108000, 2880, 2944,
838 3192, 3432, 0, 480, 489, 495, 525, 0,
839 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC),
840 .vrefresh = 60, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_16_9, },
841 /* 37 - 2880x576@50Hz */
842 { DRM_MODE("2880x576", DRM_MODE_TYPE_DRIVER, 108000, 2880, 2928,
843 3184, 3456, 0, 576, 581, 586, 625, 0,
844 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC),
845 .vrefresh = 50, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_4_3, },
846 /* 38 - 2880x576@50Hz */
847 { DRM_MODE("2880x576", DRM_MODE_TYPE_DRIVER, 108000, 2880, 2928,
848 3184, 3456, 0, 576, 581, 586, 625, 0,
849 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC),
850 .vrefresh = 50, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_16_9, },
851 /* 39 - 1920x1080i@50Hz */
852 { DRM_MODE("1920x1080i", DRM_MODE_TYPE_DRIVER, 72000, 1920, 1952,
853 2120, 2304, 0, 1080, 1126, 1136, 1250, 0,
854 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC |
855 DRM_MODE_FLAG_INTERLACE),
856 .vrefresh = 50, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_16_9, },
857 /* 40 - 1920x1080i@100Hz */
858 { DRM_MODE("1920x1080i", DRM_MODE_TYPE_DRIVER, 148500, 1920, 2448,
859 2492, 2640, 0, 1080, 1084, 1094, 1125, 0,
860 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC |
861 DRM_MODE_FLAG_INTERLACE),
862 .vrefresh = 100, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_16_9, },
863 /* 41 - 1280x720@100Hz */
864 { DRM_MODE("1280x720", DRM_MODE_TYPE_DRIVER, 148500, 1280, 1720,
865 1760, 1980, 0, 720, 725, 730, 750, 0,
866 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC),
867 .vrefresh = 100, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_16_9, },
868 /* 42 - 720x576@100Hz */
869 { DRM_MODE("720x576", DRM_MODE_TYPE_DRIVER, 54000, 720, 732,
870 796, 864, 0, 576, 581, 586, 625, 0,
871 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC),
872 .vrefresh = 100, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_4_3, },
873 /* 43 - 720x576@100Hz */
874 { DRM_MODE("720x576", DRM_MODE_TYPE_DRIVER, 54000, 720, 732,
875 796, 864, 0, 576, 581, 586, 625, 0,
876 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC),
877 .vrefresh = 100, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_16_9, },
878 /* 44 - 720(1440)x576i@100Hz */
879 { DRM_MODE("720x576i", DRM_MODE_TYPE_DRIVER, 27000, 720, 732,
880 795, 864, 0, 576, 580, 586, 625, 0,
881 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC |
882 DRM_MODE_FLAG_INTERLACE | DRM_MODE_FLAG_DBLCLK),
883 .vrefresh = 100, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_4_3, },
884 /* 45 - 720(1440)x576i@100Hz */
885 { DRM_MODE("720x576i", DRM_MODE_TYPE_DRIVER, 27000, 720, 732,
886 795, 864, 0, 576, 580, 586, 625, 0,
887 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC |
888 DRM_MODE_FLAG_INTERLACE | DRM_MODE_FLAG_DBLCLK),
889 .vrefresh = 100, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_16_9, },
890 /* 46 - 1920x1080i@120Hz */
891 { DRM_MODE("1920x1080i", DRM_MODE_TYPE_DRIVER, 148500, 1920, 2008,
892 2052, 2200, 0, 1080, 1084, 1094, 1125, 0,
893 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC |
894 DRM_MODE_FLAG_INTERLACE),
895 .vrefresh = 120, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_16_9, },
896 /* 47 - 1280x720@120Hz */
897 { DRM_MODE("1280x720", DRM_MODE_TYPE_DRIVER, 148500, 1280, 1390,
898 1430, 1650, 0, 720, 725, 730, 750, 0,
899 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC),
900 .vrefresh = 120, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_16_9, },
901 /* 48 - 720x480@120Hz */
902 { DRM_MODE("720x480", DRM_MODE_TYPE_DRIVER, 54000, 720, 736,
903 798, 858, 0, 480, 489, 495, 525, 0,
904 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC),
905 .vrefresh = 120, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_4_3, },
906 /* 49 - 720x480@120Hz */
907 { DRM_MODE("720x480", DRM_MODE_TYPE_DRIVER, 54000, 720, 736,
908 798, 858, 0, 480, 489, 495, 525, 0,
909 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC),
910 .vrefresh = 120, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_16_9, },
911 /* 50 - 720(1440)x480i@120Hz */
912 { DRM_MODE("720x480i", DRM_MODE_TYPE_DRIVER, 27000, 720, 739,
913 801, 858, 0, 480, 488, 494, 525, 0,
914 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC |
915 DRM_MODE_FLAG_INTERLACE | DRM_MODE_FLAG_DBLCLK),
916 .vrefresh = 120, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_4_3, },
917 /* 51 - 720(1440)x480i@120Hz */
918 { DRM_MODE("720x480i", DRM_MODE_TYPE_DRIVER, 27000, 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 = 120, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_16_9, },
923 /* 52 - 720x576@200Hz */
924 { DRM_MODE("720x576", DRM_MODE_TYPE_DRIVER, 108000, 720, 732,
925 796, 864, 0, 576, 581, 586, 625, 0,
926 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC),
927 .vrefresh = 200, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_4_3, },
928 /* 53 - 720x576@200Hz */
929 { DRM_MODE("720x576", DRM_MODE_TYPE_DRIVER, 108000, 720, 732,
930 796, 864, 0, 576, 581, 586, 625, 0,
931 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC),
932 .vrefresh = 200, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_16_9, },
933 /* 54 - 720(1440)x576i@200Hz */
934 { DRM_MODE("720x576i", DRM_MODE_TYPE_DRIVER, 54000, 720, 732,
935 795, 864, 0, 576, 580, 586, 625, 0,
936 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC |
937 DRM_MODE_FLAG_INTERLACE | DRM_MODE_FLAG_DBLCLK),
938 .vrefresh = 200, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_4_3, },
939 /* 55 - 720(1440)x576i@200Hz */
940 { DRM_MODE("720x576i", DRM_MODE_TYPE_DRIVER, 54000, 720, 732,
941 795, 864, 0, 576, 580, 586, 625, 0,
942 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC |
943 DRM_MODE_FLAG_INTERLACE | DRM_MODE_FLAG_DBLCLK),
944 .vrefresh = 200, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_16_9, },
945 /* 56 - 720x480@240Hz */
946 { DRM_MODE("720x480", DRM_MODE_TYPE_DRIVER, 108000, 720, 736,
947 798, 858, 0, 480, 489, 495, 525, 0,
948 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC),
949 .vrefresh = 240, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_4_3, },
950 /* 57 - 720x480@240Hz */
951 { DRM_MODE("720x480", DRM_MODE_TYPE_DRIVER, 108000, 720, 736,
952 798, 858, 0, 480, 489, 495, 525, 0,
953 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC),
954 .vrefresh = 240, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_16_9, },
955 /* 58 - 720(1440)x480i@240 */
956 { DRM_MODE("720x480i", DRM_MODE_TYPE_DRIVER, 54000, 720, 739,
957 801, 858, 0, 480, 488, 494, 525, 0,
958 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC |
959 DRM_MODE_FLAG_INTERLACE | DRM_MODE_FLAG_DBLCLK),
960 .vrefresh = 240, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_4_3, },
961 /* 59 - 720(1440)x480i@240 */
962 { DRM_MODE("720x480i", DRM_MODE_TYPE_DRIVER, 54000, 720, 739,
963 801, 858, 0, 480, 488, 494, 525, 0,
964 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC |
965 DRM_MODE_FLAG_INTERLACE | DRM_MODE_FLAG_DBLCLK),
966 .vrefresh = 240, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_16_9, },
967 /* 60 - 1280x720@24Hz */
968 { DRM_MODE("1280x720", DRM_MODE_TYPE_DRIVER, 59400, 1280, 3040,
969 3080, 3300, 0, 720, 725, 730, 750, 0,
970 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC),
971 .vrefresh = 24, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_16_9, },
972 /* 61 - 1280x720@25Hz */
973 { DRM_MODE("1280x720", DRM_MODE_TYPE_DRIVER, 74250, 1280, 3700,
974 3740, 3960, 0, 720, 725, 730, 750, 0,
975 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC),
976 .vrefresh = 25, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_16_9, },
977 /* 62 - 1280x720@30Hz */
978 { DRM_MODE("1280x720", DRM_MODE_TYPE_DRIVER, 74250, 1280, 3040,
979 3080, 3300, 0, 720, 725, 730, 750, 0,
980 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC),
981 .vrefresh = 30, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_16_9, },
982 /* 63 - 1920x1080@120Hz */
983 { DRM_MODE("1920x1080", DRM_MODE_TYPE_DRIVER, 297000, 1920, 2008,
984 2052, 2200, 0, 1080, 1084, 1089, 1125, 0,
985 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC),
986 .vrefresh = 120, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_16_9, },
987 /* 64 - 1920x1080@100Hz */
988 { DRM_MODE("1920x1080", DRM_MODE_TYPE_DRIVER, 297000, 1920, 2448,
989 2492, 2640, 0, 1080, 1084, 1094, 1125, 0,
990 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC),
991 .vrefresh = 100, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_16_9, },
992};
993
994/*
995 * HDMI 1.4 4k modes. Index using the VIC.
996 */
997static const struct drm_display_mode edid_4k_modes[] = {
998 /* 0 - dummy, VICs start at 1 */
999 { },
1000 /* 1 - 3840x2160@30Hz */
1001 { DRM_MODE("3840x2160", DRM_MODE_TYPE_DRIVER, 297000,
1002 3840, 4016, 4104, 4400, 0,
1003 2160, 2168, 2178, 2250, 0,
1004 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC),
1005 .vrefresh = 30, },
1006 /* 2 - 3840x2160@25Hz */
1007 { DRM_MODE("3840x2160", DRM_MODE_TYPE_DRIVER, 297000,
1008 3840, 4896, 4984, 5280, 0,
1009 2160, 2168, 2178, 2250, 0,
1010 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC),
1011 .vrefresh = 25, },
1012 /* 3 - 3840x2160@24Hz */
1013 { DRM_MODE("3840x2160", DRM_MODE_TYPE_DRIVER, 297000,
1014 3840, 5116, 5204, 5500, 0,
1015 2160, 2168, 2178, 2250, 0,
1016 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC),
1017 .vrefresh = 24, },
1018 /* 4 - 4096x2160@24Hz (SMPTE) */
1019 { DRM_MODE("4096x2160", DRM_MODE_TYPE_DRIVER, 297000,
1020 4096, 5116, 5204, 5500, 0,
1021 2160, 2168, 2178, 2250, 0,
1022 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC),
1023 .vrefresh = 24, },
1024};
1025
1026/*** DDC fetch and block validation ***/
1027
1028static const u8 edid_header[] = {
1029 0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00
1030};
1031
1032/**
1033 * drm_edid_header_is_valid - sanity check the header of the base EDID block
1034 * @raw_edid: pointer to raw base EDID block
1035 *
1036 * Sanity check the header of the base EDID block.
1037 *
1038 * Return: 8 if the header is perfect, down to 0 if it's totally wrong.
1039 */
1040int drm_edid_header_is_valid(const u8 *raw_edid)
1041{
1042 int i, score = 0;
1043
1044 for (i = 0; i < sizeof(edid_header); i++)
1045 if (raw_edid[i] == edid_header[i])
1046 score++;
1047
1048 return score;
1049}
1050EXPORT_SYMBOL(drm_edid_header_is_valid);
1051
1052static int edid_fixup __read_mostly = 6;
1053module_param_named(edid_fixup, edid_fixup, int, 0400);
1054MODULE_PARM_DESC(edid_fixup,
1055 "Minimum number of valid EDID header bytes (0-8, default 6)");
1056
1057static void drm_get_displayid(struct drm_connector *connector,
1058 struct edid *edid);
1059
1060static int drm_edid_block_checksum(const u8 *raw_edid)
1061{
1062 int i;
1063 u8 csum = 0;
1064 for (i = 0; i < EDID_LENGTH; i++)
1065 csum += raw_edid[i];
1066
1067 return csum;
1068}
1069
1070static bool drm_edid_is_zero(const u8 *in_edid, int length)
1071{
1072 if (memchr_inv(in_edid, 0, length))
1073 return false;
1074
1075 return true;
1076}
1077
1078/**
1079 * drm_edid_block_valid - Sanity check the EDID block (base or extension)
1080 * @raw_edid: pointer to raw EDID block
1081 * @block: type of block to validate (0 for base, extension otherwise)
1082 * @print_bad_edid: if true, dump bad EDID blocks to the console
1083 * @edid_corrupt: if true, the header or checksum is invalid
1084 *
1085 * Validate a base or extension EDID block and optionally dump bad blocks to
1086 * the console.
1087 *
1088 * Return: True if the block is valid, false otherwise.
1089 */
1090bool drm_edid_block_valid(u8 *raw_edid, int block, bool print_bad_edid,
1091 bool *edid_corrupt)
1092{
1093 u8 csum;
1094 struct edid *edid = (struct edid *)raw_edid;
1095
1096 if (WARN_ON(!raw_edid))
1097 return false;
1098
1099 if (edid_fixup > 8 || edid_fixup < 0)
1100 edid_fixup = 6;
1101
1102 if (block == 0) {
1103 int score = drm_edid_header_is_valid(raw_edid);
1104 if (score == 8) {
1105 if (edid_corrupt)
1106 *edid_corrupt = false;
1107 } else if (score >= edid_fixup) {
1108 /* Displayport Link CTS Core 1.2 rev1.1 test 4.2.2.6
1109 * The corrupt flag needs to be set here otherwise, the
1110 * fix-up code here will correct the problem, the
1111 * checksum is correct and the test fails
1112 */
1113 if (edid_corrupt)
1114 *edid_corrupt = true;
1115 DRM_DEBUG("Fixing EDID header, your hardware may be failing\n");
1116 memcpy(raw_edid, edid_header, sizeof(edid_header));
1117 } else {
1118 if (edid_corrupt)
1119 *edid_corrupt = true;
1120 goto bad;
1121 }
1122 }
1123
1124 csum = drm_edid_block_checksum(raw_edid);
1125 if (csum) {
1126 if (print_bad_edid) {
1127 DRM_ERROR("EDID checksum is invalid, remainder is %d\n", csum);
1128 }
1129
1130 if (edid_corrupt)
1131 *edid_corrupt = true;
1132
1133 /* allow CEA to slide through, switches mangle this */
1134 if (raw_edid[0] != 0x02)
1135 goto bad;
1136 }
1137
1138 /* per-block-type checks */
1139 switch (raw_edid[0]) {
1140 case 0: /* base */
1141 if (edid->version != 1) {
1142 DRM_ERROR("EDID has major version %d, instead of 1\n", edid->version);
1143 goto bad;
1144 }
1145
1146 if (edid->revision > 4)
1147 DRM_DEBUG("EDID minor > 4, assuming backward compatibility\n");
1148 break;
1149
1150 default:
1151 break;
1152 }
1153
1154 return true;
1155
1156bad:
1157 if (print_bad_edid) {
1158 if (drm_edid_is_zero(raw_edid, EDID_LENGTH)) {
1159 printk(KERN_ERR "EDID block is all zeroes\n");
1160 } else {
1161 printk(KERN_ERR "Raw EDID:\n");
1162 print_hex_dump(KERN_ERR, " \t", DUMP_PREFIX_NONE, 16, 1,
1163 raw_edid, EDID_LENGTH, false);
1164 }
1165 }
1166 return false;
1167}
1168EXPORT_SYMBOL(drm_edid_block_valid);
1169
1170/**
1171 * drm_edid_is_valid - sanity check EDID data
1172 * @edid: EDID data
1173 *
1174 * Sanity-check an entire EDID record (including extensions)
1175 *
1176 * Return: True if the EDID data is valid, false otherwise.
1177 */
1178bool drm_edid_is_valid(struct edid *edid)
1179{
1180 int i;
1181 u8 *raw = (u8 *)edid;
1182
1183 if (!edid)
1184 return false;
1185
1186 for (i = 0; i <= edid->extensions; i++)
1187 if (!drm_edid_block_valid(raw + i * EDID_LENGTH, i, true, NULL))
1188 return false;
1189
1190 return true;
1191}
1192EXPORT_SYMBOL(drm_edid_is_valid);
1193
1194#define DDC_SEGMENT_ADDR 0x30
1195/**
1196 * drm_do_probe_ddc_edid() - get EDID information via I2C
1197 * @data: I2C device adapter
1198 * @buf: EDID data buffer to be filled
1199 * @block: 128 byte EDID block to start fetching from
1200 * @len: EDID data buffer length to fetch
1201 *
1202 * Try to fetch EDID information by calling I2C driver functions.
1203 *
1204 * Return: 0 on success or -1 on failure.
1205 */
1206static int
1207drm_do_probe_ddc_edid(void *data, u8 *buf, unsigned int block, size_t len)
1208{
1209 struct i2c_adapter *adapter = data;
1210 unsigned char start = block * EDID_LENGTH;
1211 unsigned char segment = block >> 1;
1212 unsigned char xfers = segment ? 3 : 2;
1213 int ret, retries = 5;
1214
1215 /*
1216 * The core I2C driver will automatically retry the transfer if the
1217 * adapter reports EAGAIN. However, we find that bit-banging transfers
1218 * are susceptible to errors under a heavily loaded machine and
1219 * generate spurious NAKs and timeouts. Retrying the transfer
1220 * of the individual block a few times seems to overcome this.
1221 */
1222 do {
1223 struct i2c_msg msgs[] = {
1224 {
1225 .addr = DDC_SEGMENT_ADDR,
1226 .flags = 0,
1227 .len = 1,
1228 .buf = &segment,
1229 }, {
1230 .addr = DDC_ADDR,
1231 .flags = 0,
1232 .len = 1,
1233 .buf = &start,
1234 }, {
1235 .addr = DDC_ADDR,
1236 .flags = I2C_M_RD,
1237 .len = len,
1238 .buf = buf,
1239 }
1240 };
1241
1242 /*
1243 * Avoid sending the segment addr to not upset non-compliant
1244 * DDC monitors.
1245 */
1246 ret = i2c_transfer(adapter, &msgs[3 - xfers], xfers);
1247
1248 if (ret == -ENXIO) {
1249 DRM_DEBUG_KMS("drm: skipping non-existent adapter %s\n",
1250 adapter->name);
1251 break;
1252 }
1253 } while (ret != xfers && --retries);
1254
1255 return ret == xfers ? 0 : -1;
1256}
1257
1258/**
1259 * drm_do_get_edid - get EDID data using a custom EDID block read function
1260 * @connector: connector we're probing
1261 * @get_edid_block: EDID block read function
1262 * @data: private data passed to the block read function
1263 *
1264 * When the I2C adapter connected to the DDC bus is hidden behind a device that
1265 * exposes a different interface to read EDID blocks this function can be used
1266 * to get EDID data using a custom block read function.
1267 *
1268 * As in the general case the DDC bus is accessible by the kernel at the I2C
1269 * level, drivers must make all reasonable efforts to expose it as an I2C
1270 * adapter and use drm_get_edid() instead of abusing this function.
1271 *
1272 * Return: Pointer to valid EDID or NULL if we couldn't find any.
1273 */
1274struct edid *drm_do_get_edid(struct drm_connector *connector,
1275 int (*get_edid_block)(void *data, u8 *buf, unsigned int block,
1276 size_t len),
1277 void *data)
1278{
1279 int i, j = 0, valid_extensions = 0;
1280 u8 *block, *new;
1281 bool print_bad_edid = !connector->bad_edid_counter || (drm_debug & DRM_UT_KMS);
1282
1283 if ((block = kmalloc(EDID_LENGTH, GFP_KERNEL)) == NULL)
1284 return NULL;
1285
1286 /* base block fetch */
1287 for (i = 0; i < 4; i++) {
1288 if (get_edid_block(data, block, 0, EDID_LENGTH))
1289 goto out;
1290 if (drm_edid_block_valid(block, 0, print_bad_edid,
1291 &connector->edid_corrupt))
1292 break;
1293 if (i == 0 && drm_edid_is_zero(block, EDID_LENGTH)) {
1294 connector->null_edid_counter++;
1295 goto carp;
1296 }
1297 }
1298 if (i == 4)
1299 goto carp;
1300
1301 /* if there's no extensions, we're done */
1302 if (block[0x7e] == 0)
1303 return (struct edid *)block;
1304
1305 new = krealloc(block, (block[0x7e] + 1) * EDID_LENGTH, GFP_KERNEL);
1306 if (!new)
1307 goto out;
1308 block = new;
1309
1310 for (j = 1; j <= block[0x7e]; j++) {
1311 for (i = 0; i < 4; i++) {
1312 if (get_edid_block(data,
1313 block + (valid_extensions + 1) * EDID_LENGTH,
1314 j, EDID_LENGTH))
1315 goto out;
1316 if (drm_edid_block_valid(block + (valid_extensions + 1)
1317 * EDID_LENGTH, j,
1318 print_bad_edid,
1319 NULL)) {
1320 valid_extensions++;
1321 break;
1322 }
1323 }
1324
1325 if (i == 4 && print_bad_edid) {
1326 dev_warn(connector->dev->dev,
1327 "%s: Ignoring invalid EDID block %d.\n",
1328 connector->name, j);
1329
1330 connector->bad_edid_counter++;
1331 }
1332 }
1333
1334 if (valid_extensions != block[0x7e]) {
1335 block[EDID_LENGTH-1] += block[0x7e] - valid_extensions;
1336 block[0x7e] = valid_extensions;
1337 new = krealloc(block, (valid_extensions + 1) * EDID_LENGTH, GFP_KERNEL);
1338 if (!new)
1339 goto out;
1340 block = new;
1341 }
1342
1343 return (struct edid *)block;
1344
1345carp:
1346 if (print_bad_edid) {
1347 dev_warn(connector->dev->dev, "%s: EDID block %d invalid.\n",
1348 connector->name, j);
1349 }
1350 connector->bad_edid_counter++;
1351
1352out:
1353 kfree(block);
1354 return NULL;
1355}
1356EXPORT_SYMBOL_GPL(drm_do_get_edid);
1357
1358/**
1359 * drm_probe_ddc() - probe DDC presence
1360 * @adapter: I2C adapter to probe
1361 *
1362 * Return: True on success, false on failure.
1363 */
1364bool
1365drm_probe_ddc(struct i2c_adapter *adapter)
1366{
1367 unsigned char out;
1368
1369 return (drm_do_probe_ddc_edid(adapter, &out, 0, 1) == 0);
1370}
1371EXPORT_SYMBOL(drm_probe_ddc);
1372
1373/**
1374 * drm_get_edid - get EDID data, if available
1375 * @connector: connector we're probing
1376 * @adapter: I2C adapter to use for DDC
1377 *
1378 * Poke the given I2C channel to grab EDID data if possible. If found,
1379 * attach it to the connector.
1380 *
1381 * Return: Pointer to valid EDID or NULL if we couldn't find any.
1382 */
1383struct edid *drm_get_edid(struct drm_connector *connector,
1384 struct i2c_adapter *adapter)
1385{
1386 struct edid *edid;
1387
1388 if (!drm_probe_ddc(adapter))
1389 return NULL;
1390
1391 edid = drm_do_get_edid(connector, drm_do_probe_ddc_edid, adapter);
1392 if (edid)
1393 drm_get_displayid(connector, edid);
1394 return edid;
1395}
1396EXPORT_SYMBOL(drm_get_edid);
1397
1398/**
1399 * drm_get_edid_switcheroo - get EDID data for a vga_switcheroo output
1400 * @connector: connector we're probing
1401 * @adapter: I2C adapter to use for DDC
1402 *
1403 * Wrapper around drm_get_edid() for laptops with dual GPUs using one set of
1404 * outputs. The wrapper adds the requisite vga_switcheroo calls to temporarily
1405 * switch DDC to the GPU which is retrieving EDID.
1406 *
1407 * Return: Pointer to valid EDID or %NULL if we couldn't find any.
1408 */
1409struct edid *drm_get_edid_switcheroo(struct drm_connector *connector,
1410 struct i2c_adapter *adapter)
1411{
1412 struct pci_dev *pdev = connector->dev->pdev;
1413 struct edid *edid;
1414
1415 vga_switcheroo_lock_ddc(pdev);
1416 edid = drm_get_edid(connector, adapter);
1417 vga_switcheroo_unlock_ddc(pdev);
1418
1419 return edid;
1420}
1421EXPORT_SYMBOL(drm_get_edid_switcheroo);
1422
1423/**
1424 * drm_edid_duplicate - duplicate an EDID and the extensions
1425 * @edid: EDID to duplicate
1426 *
1427 * Return: Pointer to duplicated EDID or NULL on allocation failure.
1428 */
1429struct edid *drm_edid_duplicate(const struct edid *edid)
1430{
1431 return kmemdup(edid, (edid->extensions + 1) * EDID_LENGTH, GFP_KERNEL);
1432}
1433EXPORT_SYMBOL(drm_edid_duplicate);
1434
1435/*** EDID parsing ***/
1436
1437/**
1438 * edid_vendor - match a string against EDID's obfuscated vendor field
1439 * @edid: EDID to match
1440 * @vendor: vendor string
1441 *
1442 * Returns true if @vendor is in @edid, false otherwise
1443 */
1444static bool edid_vendor(struct edid *edid, char *vendor)
1445{
1446 char edid_vendor[3];
1447
1448 edid_vendor[0] = ((edid->mfg_id[0] & 0x7c) >> 2) + '@';
1449 edid_vendor[1] = (((edid->mfg_id[0] & 0x3) << 3) |
1450 ((edid->mfg_id[1] & 0xe0) >> 5)) + '@';
1451 edid_vendor[2] = (edid->mfg_id[1] & 0x1f) + '@';
1452
1453 return !strncmp(edid_vendor, vendor, 3);
1454}
1455
1456/**
1457 * edid_get_quirks - return quirk flags for a given EDID
1458 * @edid: EDID to process
1459 *
1460 * This tells subsequent routines what fixes they need to apply.
1461 */
1462static u32 edid_get_quirks(struct edid *edid)
1463{
1464 struct edid_quirk *quirk;
1465 int i;
1466
1467 for (i = 0; i < ARRAY_SIZE(edid_quirk_list); i++) {
1468 quirk = &edid_quirk_list[i];
1469
1470 if (edid_vendor(edid, quirk->vendor) &&
1471 (EDID_PRODUCT_ID(edid) == quirk->product_id))
1472 return quirk->quirks;
1473 }
1474
1475 return 0;
1476}
1477
1478#define MODE_SIZE(m) ((m)->hdisplay * (m)->vdisplay)
1479#define MODE_REFRESH_DIFF(c,t) (abs((c) - (t)))
1480
1481/**
1482 * edid_fixup_preferred - set preferred modes based on quirk list
1483 * @connector: has mode list to fix up
1484 * @quirks: quirks list
1485 *
1486 * Walk the mode list for @connector, clearing the preferred status
1487 * on existing modes and setting it anew for the right mode ala @quirks.
1488 */
1489static void edid_fixup_preferred(struct drm_connector *connector,
1490 u32 quirks)
1491{
1492 struct drm_display_mode *t, *cur_mode, *preferred_mode;
1493 int target_refresh = 0;
1494 int cur_vrefresh, preferred_vrefresh;
1495
1496 if (list_empty(&connector->probed_modes))
1497 return;
1498
1499 if (quirks & EDID_QUIRK_PREFER_LARGE_60)
1500 target_refresh = 60;
1501 if (quirks & EDID_QUIRK_PREFER_LARGE_75)
1502 target_refresh = 75;
1503
1504 preferred_mode = list_first_entry(&connector->probed_modes,
1505 struct drm_display_mode, head);
1506
1507 list_for_each_entry_safe(cur_mode, t, &connector->probed_modes, head) {
1508 cur_mode->type &= ~DRM_MODE_TYPE_PREFERRED;
1509
1510 if (cur_mode == preferred_mode)
1511 continue;
1512
1513 /* Largest mode is preferred */
1514 if (MODE_SIZE(cur_mode) > MODE_SIZE(preferred_mode))
1515 preferred_mode = cur_mode;
1516
1517 cur_vrefresh = cur_mode->vrefresh ?
1518 cur_mode->vrefresh : drm_mode_vrefresh(cur_mode);
1519 preferred_vrefresh = preferred_mode->vrefresh ?
1520 preferred_mode->vrefresh : drm_mode_vrefresh(preferred_mode);
1521 /* At a given size, try to get closest to target refresh */
1522 if ((MODE_SIZE(cur_mode) == MODE_SIZE(preferred_mode)) &&
1523 MODE_REFRESH_DIFF(cur_vrefresh, target_refresh) <
1524 MODE_REFRESH_DIFF(preferred_vrefresh, target_refresh)) {
1525 preferred_mode = cur_mode;
1526 }
1527 }
1528
1529 preferred_mode->type |= DRM_MODE_TYPE_PREFERRED;
1530}
1531
1532static bool
1533mode_is_rb(const struct drm_display_mode *mode)
1534{
1535 return (mode->htotal - mode->hdisplay == 160) &&
1536 (mode->hsync_end - mode->hdisplay == 80) &&
1537 (mode->hsync_end - mode->hsync_start == 32) &&
1538 (mode->vsync_start - mode->vdisplay == 3);
1539}
1540
1541/*
1542 * drm_mode_find_dmt - Create a copy of a mode if present in DMT
1543 * @dev: Device to duplicate against
1544 * @hsize: Mode width
1545 * @vsize: Mode height
1546 * @fresh: Mode refresh rate
1547 * @rb: Mode reduced-blanking-ness
1548 *
1549 * Walk the DMT mode list looking for a match for the given parameters.
1550 *
1551 * Return: A newly allocated copy of the mode, or NULL if not found.
1552 */
1553struct drm_display_mode *drm_mode_find_dmt(struct drm_device *dev,
1554 int hsize, int vsize, int fresh,
1555 bool rb)
1556{
1557 int i;
1558
1559 for (i = 0; i < ARRAY_SIZE(drm_dmt_modes); i++) {
1560 const struct drm_display_mode *ptr = &drm_dmt_modes[i];
1561 if (hsize != ptr->hdisplay)
1562 continue;
1563 if (vsize != ptr->vdisplay)
1564 continue;
1565 if (fresh != drm_mode_vrefresh(ptr))
1566 continue;
1567 if (rb != mode_is_rb(ptr))
1568 continue;
1569
1570 return drm_mode_duplicate(dev, ptr);
1571 }
1572
1573 return NULL;
1574}
1575EXPORT_SYMBOL(drm_mode_find_dmt);
1576
1577typedef void detailed_cb(struct detailed_timing *timing, void *closure);
1578
1579static void
1580cea_for_each_detailed_block(u8 *ext, detailed_cb *cb, void *closure)
1581{
1582 int i, n = 0;
1583 u8 d = ext[0x02];
1584 u8 *det_base = ext + d;
1585
1586 n = (127 - d) / 18;
1587 for (i = 0; i < n; i++)
1588 cb((struct detailed_timing *)(det_base + 18 * i), closure);
1589}
1590
1591static void
1592vtb_for_each_detailed_block(u8 *ext, detailed_cb *cb, void *closure)
1593{
1594 unsigned int i, n = min((int)ext[0x02], 6);
1595 u8 *det_base = ext + 5;
1596
1597 if (ext[0x01] != 1)
1598 return; /* unknown version */
1599
1600 for (i = 0; i < n; i++)
1601 cb((struct detailed_timing *)(det_base + 18 * i), closure);
1602}
1603
1604static void
1605drm_for_each_detailed_block(u8 *raw_edid, detailed_cb *cb, void *closure)
1606{
1607 int i;
1608 struct edid *edid = (struct edid *)raw_edid;
1609
1610 if (edid == NULL)
1611 return;
1612
1613 for (i = 0; i < EDID_DETAILED_TIMINGS; i++)
1614 cb(&(edid->detailed_timings[i]), closure);
1615
1616 for (i = 1; i <= raw_edid[0x7e]; i++) {
1617 u8 *ext = raw_edid + (i * EDID_LENGTH);
1618 switch (*ext) {
1619 case CEA_EXT:
1620 cea_for_each_detailed_block(ext, cb, closure);
1621 break;
1622 case VTB_EXT:
1623 vtb_for_each_detailed_block(ext, cb, closure);
1624 break;
1625 default:
1626 break;
1627 }
1628 }
1629}
1630
1631static void
1632is_rb(struct detailed_timing *t, void *data)
1633{
1634 u8 *r = (u8 *)t;
1635 if (r[3] == EDID_DETAIL_MONITOR_RANGE)
1636 if (r[15] & 0x10)
1637 *(bool *)data = true;
1638}
1639
1640/* EDID 1.4 defines this explicitly. For EDID 1.3, we guess, badly. */
1641static bool
1642drm_monitor_supports_rb(struct edid *edid)
1643{
1644 if (edid->revision >= 4) {
1645 bool ret = false;
1646 drm_for_each_detailed_block((u8 *)edid, is_rb, &ret);
1647 return ret;
1648 }
1649
1650 return ((edid->input & DRM_EDID_INPUT_DIGITAL) != 0);
1651}
1652
1653static void
1654find_gtf2(struct detailed_timing *t, void *data)
1655{
1656 u8 *r = (u8 *)t;
1657 if (r[3] == EDID_DETAIL_MONITOR_RANGE && r[10] == 0x02)
1658 *(u8 **)data = r;
1659}
1660
1661/* Secondary GTF curve kicks in above some break frequency */
1662static int
1663drm_gtf2_hbreak(struct edid *edid)
1664{
1665 u8 *r = NULL;
1666 drm_for_each_detailed_block((u8 *)edid, find_gtf2, &r);
1667 return r ? (r[12] * 2) : 0;
1668}
1669
1670static int
1671drm_gtf2_2c(struct edid *edid)
1672{
1673 u8 *r = NULL;
1674 drm_for_each_detailed_block((u8 *)edid, find_gtf2, &r);
1675 return r ? r[13] : 0;
1676}
1677
1678static int
1679drm_gtf2_m(struct edid *edid)
1680{
1681 u8 *r = NULL;
1682 drm_for_each_detailed_block((u8 *)edid, find_gtf2, &r);
1683 return r ? (r[15] << 8) + r[14] : 0;
1684}
1685
1686static int
1687drm_gtf2_k(struct edid *edid)
1688{
1689 u8 *r = NULL;
1690 drm_for_each_detailed_block((u8 *)edid, find_gtf2, &r);
1691 return r ? r[16] : 0;
1692}
1693
1694static int
1695drm_gtf2_2j(struct edid *edid)
1696{
1697 u8 *r = NULL;
1698 drm_for_each_detailed_block((u8 *)edid, find_gtf2, &r);
1699 return r ? r[17] : 0;
1700}
1701
1702/**
1703 * standard_timing_level - get std. timing level(CVT/GTF/DMT)
1704 * @edid: EDID block to scan
1705 */
1706static int standard_timing_level(struct edid *edid)
1707{
1708 if (edid->revision >= 2) {
1709 if (edid->revision >= 4 && (edid->features & DRM_EDID_FEATURE_DEFAULT_GTF))
1710 return LEVEL_CVT;
1711 if (drm_gtf2_hbreak(edid))
1712 return LEVEL_GTF2;
1713 return LEVEL_GTF;
1714 }
1715 return LEVEL_DMT;
1716}
1717
1718/*
1719 * 0 is reserved. The spec says 0x01 fill for unused timings. Some old
1720 * monitors fill with ascii space (0x20) instead.
1721 */
1722static int
1723bad_std_timing(u8 a, u8 b)
1724{
1725 return (a == 0x00 && b == 0x00) ||
1726 (a == 0x01 && b == 0x01) ||
1727 (a == 0x20 && b == 0x20);
1728}
1729
1730/**
1731 * drm_mode_std - convert standard mode info (width, height, refresh) into mode
1732 * @connector: connector of for the EDID block
1733 * @edid: EDID block to scan
1734 * @t: standard timing params
1735 *
1736 * Take the standard timing params (in this case width, aspect, and refresh)
1737 * and convert them into a real mode using CVT/GTF/DMT.
1738 */
1739static struct drm_display_mode *
1740drm_mode_std(struct drm_connector *connector, struct edid *edid,
1741 struct std_timing *t)
1742{
1743 struct drm_device *dev = connector->dev;
1744 struct drm_display_mode *m, *mode = NULL;
1745 int hsize, vsize;
1746 int vrefresh_rate;
1747 unsigned aspect_ratio = (t->vfreq_aspect & EDID_TIMING_ASPECT_MASK)
1748 >> EDID_TIMING_ASPECT_SHIFT;
1749 unsigned vfreq = (t->vfreq_aspect & EDID_TIMING_VFREQ_MASK)
1750 >> EDID_TIMING_VFREQ_SHIFT;
1751 int timing_level = standard_timing_level(edid);
1752
1753 if (bad_std_timing(t->hsize, t->vfreq_aspect))
1754 return NULL;
1755
1756 /* According to the EDID spec, the hdisplay = hsize * 8 + 248 */
1757 hsize = t->hsize * 8 + 248;
1758 /* vrefresh_rate = vfreq + 60 */
1759 vrefresh_rate = vfreq + 60;
1760 /* the vdisplay is calculated based on the aspect ratio */
1761 if (aspect_ratio == 0) {
1762 if (edid->revision < 3)
1763 vsize = hsize;
1764 else
1765 vsize = (hsize * 10) / 16;
1766 } else if (aspect_ratio == 1)
1767 vsize = (hsize * 3) / 4;
1768 else if (aspect_ratio == 2)
1769 vsize = (hsize * 4) / 5;
1770 else
1771 vsize = (hsize * 9) / 16;
1772
1773 /* HDTV hack, part 1 */
1774 if (vrefresh_rate == 60 &&
1775 ((hsize == 1360 && vsize == 765) ||
1776 (hsize == 1368 && vsize == 769))) {
1777 hsize = 1366;
1778 vsize = 768;
1779 }
1780
1781 /*
1782 * If this connector already has a mode for this size and refresh
1783 * rate (because it came from detailed or CVT info), use that
1784 * instead. This way we don't have to guess at interlace or
1785 * reduced blanking.
1786 */
1787 list_for_each_entry(m, &connector->probed_modes, head)
1788 if (m->hdisplay == hsize && m->vdisplay == vsize &&
1789 drm_mode_vrefresh(m) == vrefresh_rate)
1790 return NULL;
1791
1792 /* HDTV hack, part 2 */
1793 if (hsize == 1366 && vsize == 768 && vrefresh_rate == 60) {
1794 mode = drm_cvt_mode(dev, 1366, 768, vrefresh_rate, 0, 0,
1795 false);
1796 mode->hdisplay = 1366;
1797 mode->hsync_start = mode->hsync_start - 1;
1798 mode->hsync_end = mode->hsync_end - 1;
1799 return mode;
1800 }
1801
1802 /* check whether it can be found in default mode table */
1803 if (drm_monitor_supports_rb(edid)) {
1804 mode = drm_mode_find_dmt(dev, hsize, vsize, vrefresh_rate,
1805 true);
1806 if (mode)
1807 return mode;
1808 }
1809 mode = drm_mode_find_dmt(dev, hsize, vsize, vrefresh_rate, false);
1810 if (mode)
1811 return mode;
1812
1813 /* okay, generate it */
1814 switch (timing_level) {
1815 case LEVEL_DMT:
1816 break;
1817 case LEVEL_GTF:
1818 mode = drm_gtf_mode(dev, hsize, vsize, vrefresh_rate, 0, 0);
1819 break;
1820 case LEVEL_GTF2:
1821 /*
1822 * This is potentially wrong if there's ever a monitor with
1823 * more than one ranges section, each claiming a different
1824 * secondary GTF curve. Please don't do that.
1825 */
1826 mode = drm_gtf_mode(dev, hsize, vsize, vrefresh_rate, 0, 0);
1827 if (!mode)
1828 return NULL;
1829 if (drm_mode_hsync(mode) > drm_gtf2_hbreak(edid)) {
1830 drm_mode_destroy(dev, mode);
1831 mode = drm_gtf_mode_complex(dev, hsize, vsize,
1832 vrefresh_rate, 0, 0,
1833 drm_gtf2_m(edid),
1834 drm_gtf2_2c(edid),
1835 drm_gtf2_k(edid),
1836 drm_gtf2_2j(edid));
1837 }
1838 break;
1839 case LEVEL_CVT:
1840 mode = drm_cvt_mode(dev, hsize, vsize, vrefresh_rate, 0, 0,
1841 false);
1842 break;
1843 }
1844 return mode;
1845}
1846
1847/*
1848 * EDID is delightfully ambiguous about how interlaced modes are to be
1849 * encoded. Our internal representation is of frame height, but some
1850 * HDTV detailed timings are encoded as field height.
1851 *
1852 * The format list here is from CEA, in frame size. Technically we
1853 * should be checking refresh rate too. Whatever.
1854 */
1855static void
1856drm_mode_do_interlace_quirk(struct drm_display_mode *mode,
1857 struct detailed_pixel_timing *pt)
1858{
1859 int i;
1860 static const struct {
1861 int w, h;
1862 } cea_interlaced[] = {
1863 { 1920, 1080 },
1864 { 720, 480 },
1865 { 1440, 480 },
1866 { 2880, 480 },
1867 { 720, 576 },
1868 { 1440, 576 },
1869 { 2880, 576 },
1870 };
1871
1872 if (!(pt->misc & DRM_EDID_PT_INTERLACED))
1873 return;
1874
1875 for (i = 0; i < ARRAY_SIZE(cea_interlaced); i++) {
1876 if ((mode->hdisplay == cea_interlaced[i].w) &&
1877 (mode->vdisplay == cea_interlaced[i].h / 2)) {
1878 mode->vdisplay *= 2;
1879 mode->vsync_start *= 2;
1880 mode->vsync_end *= 2;
1881 mode->vtotal *= 2;
1882 mode->vtotal |= 1;
1883 }
1884 }
1885
1886 mode->flags |= DRM_MODE_FLAG_INTERLACE;
1887}
1888
1889/**
1890 * drm_mode_detailed - create a new mode from an EDID detailed timing section
1891 * @dev: DRM device (needed to create new mode)
1892 * @edid: EDID block
1893 * @timing: EDID detailed timing info
1894 * @quirks: quirks to apply
1895 *
1896 * An EDID detailed timing block contains enough info for us to create and
1897 * return a new struct drm_display_mode.
1898 */
1899static struct drm_display_mode *drm_mode_detailed(struct drm_device *dev,
1900 struct edid *edid,
1901 struct detailed_timing *timing,
1902 u32 quirks)
1903{
1904 struct drm_display_mode *mode;
1905 struct detailed_pixel_timing *pt = &timing->data.pixel_data;
1906 unsigned hactive = (pt->hactive_hblank_hi & 0xf0) << 4 | pt->hactive_lo;
1907 unsigned vactive = (pt->vactive_vblank_hi & 0xf0) << 4 | pt->vactive_lo;
1908 unsigned hblank = (pt->hactive_hblank_hi & 0xf) << 8 | pt->hblank_lo;
1909 unsigned vblank = (pt->vactive_vblank_hi & 0xf) << 8 | pt->vblank_lo;
1910 unsigned hsync_offset = (pt->hsync_vsync_offset_pulse_width_hi & 0xc0) << 2 | pt->hsync_offset_lo;
1911 unsigned hsync_pulse_width = (pt->hsync_vsync_offset_pulse_width_hi & 0x30) << 4 | pt->hsync_pulse_width_lo;
1912 unsigned vsync_offset = (pt->hsync_vsync_offset_pulse_width_hi & 0xc) << 2 | pt->vsync_offset_pulse_width_lo >> 4;
1913 unsigned vsync_pulse_width = (pt->hsync_vsync_offset_pulse_width_hi & 0x3) << 4 | (pt->vsync_offset_pulse_width_lo & 0xf);
1914
1915 /* ignore tiny modes */
1916 if (hactive < 64 || vactive < 64)
1917 return NULL;
1918
1919 if (pt->misc & DRM_EDID_PT_STEREO) {
1920 DRM_DEBUG_KMS("stereo mode not supported\n");
1921 return NULL;
1922 }
1923 if (!(pt->misc & DRM_EDID_PT_SEPARATE_SYNC)) {
1924 DRM_DEBUG_KMS("composite sync not supported\n");
1925 }
1926
1927 /* it is incorrect if hsync/vsync width is zero */
1928 if (!hsync_pulse_width || !vsync_pulse_width) {
1929 DRM_DEBUG_KMS("Incorrect Detailed timing. "
1930 "Wrong Hsync/Vsync pulse width\n");
1931 return NULL;
1932 }
1933
1934 if (quirks & EDID_QUIRK_FORCE_REDUCED_BLANKING) {
1935 mode = drm_cvt_mode(dev, hactive, vactive, 60, true, false, false);
1936 if (!mode)
1937 return NULL;
1938
1939 goto set_size;
1940 }
1941
1942 mode = drm_mode_create(dev);
1943 if (!mode)
1944 return NULL;
1945
1946 if (quirks & EDID_QUIRK_135_CLOCK_TOO_HIGH)
1947 timing->pixel_clock = cpu_to_le16(1088);
1948
1949 mode->clock = le16_to_cpu(timing->pixel_clock) * 10;
1950
1951 mode->hdisplay = hactive;
1952 mode->hsync_start = mode->hdisplay + hsync_offset;
1953 mode->hsync_end = mode->hsync_start + hsync_pulse_width;
1954 mode->htotal = mode->hdisplay + hblank;
1955
1956 mode->vdisplay = vactive;
1957 mode->vsync_start = mode->vdisplay + vsync_offset;
1958 mode->vsync_end = mode->vsync_start + vsync_pulse_width;
1959 mode->vtotal = mode->vdisplay + vblank;
1960
1961 /* Some EDIDs have bogus h/vtotal values */
1962 if (mode->hsync_end > mode->htotal)
1963 mode->htotal = mode->hsync_end + 1;
1964 if (mode->vsync_end > mode->vtotal)
1965 mode->vtotal = mode->vsync_end + 1;
1966
1967 drm_mode_do_interlace_quirk(mode, pt);
1968
1969 if (quirks & EDID_QUIRK_DETAILED_SYNC_PP) {
1970 pt->misc |= DRM_EDID_PT_HSYNC_POSITIVE | DRM_EDID_PT_VSYNC_POSITIVE;
1971 }
1972
1973 mode->flags |= (pt->misc & DRM_EDID_PT_HSYNC_POSITIVE) ?
1974 DRM_MODE_FLAG_PHSYNC : DRM_MODE_FLAG_NHSYNC;
1975 mode->flags |= (pt->misc & DRM_EDID_PT_VSYNC_POSITIVE) ?
1976 DRM_MODE_FLAG_PVSYNC : DRM_MODE_FLAG_NVSYNC;
1977
1978set_size:
1979 mode->width_mm = pt->width_mm_lo | (pt->width_height_mm_hi & 0xf0) << 4;
1980 mode->height_mm = pt->height_mm_lo | (pt->width_height_mm_hi & 0xf) << 8;
1981
1982 if (quirks & EDID_QUIRK_DETAILED_IN_CM) {
1983 mode->width_mm *= 10;
1984 mode->height_mm *= 10;
1985 }
1986
1987 if (quirks & EDID_QUIRK_DETAILED_USE_MAXIMUM_SIZE) {
1988 mode->width_mm = edid->width_cm * 10;
1989 mode->height_mm = edid->height_cm * 10;
1990 }
1991
1992 mode->type = DRM_MODE_TYPE_DRIVER;
1993 mode->vrefresh = drm_mode_vrefresh(mode);
1994 drm_mode_set_name(mode);
1995
1996 return mode;
1997}
1998
1999static bool
2000mode_in_hsync_range(const struct drm_display_mode *mode,
2001 struct edid *edid, u8 *t)
2002{
2003 int hsync, hmin, hmax;
2004
2005 hmin = t[7];
2006 if (edid->revision >= 4)
2007 hmin += ((t[4] & 0x04) ? 255 : 0);
2008 hmax = t[8];
2009 if (edid->revision >= 4)
2010 hmax += ((t[4] & 0x08) ? 255 : 0);
2011 hsync = drm_mode_hsync(mode);
2012
2013 return (hsync <= hmax && hsync >= hmin);
2014}
2015
2016static bool
2017mode_in_vsync_range(const struct drm_display_mode *mode,
2018 struct edid *edid, u8 *t)
2019{
2020 int vsync, vmin, vmax;
2021
2022 vmin = t[5];
2023 if (edid->revision >= 4)
2024 vmin += ((t[4] & 0x01) ? 255 : 0);
2025 vmax = t[6];
2026 if (edid->revision >= 4)
2027 vmax += ((t[4] & 0x02) ? 255 : 0);
2028 vsync = drm_mode_vrefresh(mode);
2029
2030 return (vsync <= vmax && vsync >= vmin);
2031}
2032
2033static u32
2034range_pixel_clock(struct edid *edid, u8 *t)
2035{
2036 /* unspecified */
2037 if (t[9] == 0 || t[9] == 255)
2038 return 0;
2039
2040 /* 1.4 with CVT support gives us real precision, yay */
2041 if (edid->revision >= 4 && t[10] == 0x04)
2042 return (t[9] * 10000) - ((t[12] >> 2) * 250);
2043
2044 /* 1.3 is pathetic, so fuzz up a bit */
2045 return t[9] * 10000 + 5001;
2046}
2047
2048static bool
2049mode_in_range(const struct drm_display_mode *mode, struct edid *edid,
2050 struct detailed_timing *timing)
2051{
2052 u32 max_clock;
2053 u8 *t = (u8 *)timing;
2054
2055 if (!mode_in_hsync_range(mode, edid, t))
2056 return false;
2057
2058 if (!mode_in_vsync_range(mode, edid, t))
2059 return false;
2060
2061 if ((max_clock = range_pixel_clock(edid, t)))
2062 if (mode->clock > max_clock)
2063 return false;
2064
2065 /* 1.4 max horizontal check */
2066 if (edid->revision >= 4 && t[10] == 0x04)
2067 if (t[13] && mode->hdisplay > 8 * (t[13] + (256 * (t[12]&0x3))))
2068 return false;
2069
2070 if (mode_is_rb(mode) && !drm_monitor_supports_rb(edid))
2071 return false;
2072
2073 return true;
2074}
2075
2076static bool valid_inferred_mode(const struct drm_connector *connector,
2077 const struct drm_display_mode *mode)
2078{
2079 const struct drm_display_mode *m;
2080 bool ok = false;
2081
2082 list_for_each_entry(m, &connector->probed_modes, head) {
2083 if (mode->hdisplay == m->hdisplay &&
2084 mode->vdisplay == m->vdisplay &&
2085 drm_mode_vrefresh(mode) == drm_mode_vrefresh(m))
2086 return false; /* duplicated */
2087 if (mode->hdisplay <= m->hdisplay &&
2088 mode->vdisplay <= m->vdisplay)
2089 ok = true;
2090 }
2091 return ok;
2092}
2093
2094static int
2095drm_dmt_modes_for_range(struct drm_connector *connector, struct edid *edid,
2096 struct detailed_timing *timing)
2097{
2098 int i, modes = 0;
2099 struct drm_display_mode *newmode;
2100 struct drm_device *dev = connector->dev;
2101
2102 for (i = 0; i < ARRAY_SIZE(drm_dmt_modes); i++) {
2103 if (mode_in_range(drm_dmt_modes + i, edid, timing) &&
2104 valid_inferred_mode(connector, drm_dmt_modes + i)) {
2105 newmode = drm_mode_duplicate(dev, &drm_dmt_modes[i]);
2106 if (newmode) {
2107 drm_mode_probed_add(connector, newmode);
2108 modes++;
2109 }
2110 }
2111 }
2112
2113 return modes;
2114}
2115
2116/* fix up 1366x768 mode from 1368x768;
2117 * GFT/CVT can't express 1366 width which isn't dividable by 8
2118 */
2119static void fixup_mode_1366x768(struct drm_display_mode *mode)
2120{
2121 if (mode->hdisplay == 1368 && mode->vdisplay == 768) {
2122 mode->hdisplay = 1366;
2123 mode->hsync_start--;
2124 mode->hsync_end--;
2125 drm_mode_set_name(mode);
2126 }
2127}
2128
2129static int
2130drm_gtf_modes_for_range(struct drm_connector *connector, struct edid *edid,
2131 struct detailed_timing *timing)
2132{
2133 int i, modes = 0;
2134 struct drm_display_mode *newmode;
2135 struct drm_device *dev = connector->dev;
2136
2137 for (i = 0; i < ARRAY_SIZE(extra_modes); i++) {
2138 const struct minimode *m = &extra_modes[i];
2139 newmode = drm_gtf_mode(dev, m->w, m->h, m->r, 0, 0);
2140 if (!newmode)
2141 return modes;
2142
2143 fixup_mode_1366x768(newmode);
2144 if (!mode_in_range(newmode, edid, timing) ||
2145 !valid_inferred_mode(connector, newmode)) {
2146 drm_mode_destroy(dev, newmode);
2147 continue;
2148 }
2149
2150 drm_mode_probed_add(connector, newmode);
2151 modes++;
2152 }
2153
2154 return modes;
2155}
2156
2157static int
2158drm_cvt_modes_for_range(struct drm_connector *connector, struct edid *edid,
2159 struct detailed_timing *timing)
2160{
2161 int i, modes = 0;
2162 struct drm_display_mode *newmode;
2163 struct drm_device *dev = connector->dev;
2164 bool rb = drm_monitor_supports_rb(edid);
2165
2166 for (i = 0; i < ARRAY_SIZE(extra_modes); i++) {
2167 const struct minimode *m = &extra_modes[i];
2168 newmode = drm_cvt_mode(dev, m->w, m->h, m->r, rb, 0, 0);
2169 if (!newmode)
2170 return modes;
2171
2172 fixup_mode_1366x768(newmode);
2173 if (!mode_in_range(newmode, edid, timing) ||
2174 !valid_inferred_mode(connector, newmode)) {
2175 drm_mode_destroy(dev, newmode);
2176 continue;
2177 }
2178
2179 drm_mode_probed_add(connector, newmode);
2180 modes++;
2181 }
2182
2183 return modes;
2184}
2185
2186static void
2187do_inferred_modes(struct detailed_timing *timing, void *c)
2188{
2189 struct detailed_mode_closure *closure = c;
2190 struct detailed_non_pixel *data = &timing->data.other_data;
2191 struct detailed_data_monitor_range *range = &data->data.range;
2192
2193 if (data->type != EDID_DETAIL_MONITOR_RANGE)
2194 return;
2195
2196 closure->modes += drm_dmt_modes_for_range(closure->connector,
2197 closure->edid,
2198 timing);
2199
2200 if (!version_greater(closure->edid, 1, 1))
2201 return; /* GTF not defined yet */
2202
2203 switch (range->flags) {
2204 case 0x02: /* secondary gtf, XXX could do more */
2205 case 0x00: /* default gtf */
2206 closure->modes += drm_gtf_modes_for_range(closure->connector,
2207 closure->edid,
2208 timing);
2209 break;
2210 case 0x04: /* cvt, only in 1.4+ */
2211 if (!version_greater(closure->edid, 1, 3))
2212 break;
2213
2214 closure->modes += drm_cvt_modes_for_range(closure->connector,
2215 closure->edid,
2216 timing);
2217 break;
2218 case 0x01: /* just the ranges, no formula */
2219 default:
2220 break;
2221 }
2222}
2223
2224static int
2225add_inferred_modes(struct drm_connector *connector, struct edid *edid)
2226{
2227 struct detailed_mode_closure closure = {
2228 .connector = connector,
2229 .edid = edid,
2230 };
2231
2232 if (version_greater(edid, 1, 0))
2233 drm_for_each_detailed_block((u8 *)edid, do_inferred_modes,
2234 &closure);
2235
2236 return closure.modes;
2237}
2238
2239static int
2240drm_est3_modes(struct drm_connector *connector, struct detailed_timing *timing)
2241{
2242 int i, j, m, modes = 0;
2243 struct drm_display_mode *mode;
2244 u8 *est = ((u8 *)timing) + 6;
2245
2246 for (i = 0; i < 6; i++) {
2247 for (j = 7; j >= 0; j--) {
2248 m = (i * 8) + (7 - j);
2249 if (m >= ARRAY_SIZE(est3_modes))
2250 break;
2251 if (est[i] & (1 << j)) {
2252 mode = drm_mode_find_dmt(connector->dev,
2253 est3_modes[m].w,
2254 est3_modes[m].h,
2255 est3_modes[m].r,
2256 est3_modes[m].rb);
2257 if (mode) {
2258 drm_mode_probed_add(connector, mode);
2259 modes++;
2260 }
2261 }
2262 }
2263 }
2264
2265 return modes;
2266}
2267
2268static void
2269do_established_modes(struct detailed_timing *timing, void *c)
2270{
2271 struct detailed_mode_closure *closure = c;
2272 struct detailed_non_pixel *data = &timing->data.other_data;
2273
2274 if (data->type == EDID_DETAIL_EST_TIMINGS)
2275 closure->modes += drm_est3_modes(closure->connector, timing);
2276}
2277
2278/**
2279 * add_established_modes - get est. modes from EDID and add them
2280 * @connector: connector to add mode(s) to
2281 * @edid: EDID block to scan
2282 *
2283 * Each EDID block contains a bitmap of the supported "established modes" list
2284 * (defined above). Tease them out and add them to the global modes list.
2285 */
2286static int
2287add_established_modes(struct drm_connector *connector, struct edid *edid)
2288{
2289 struct drm_device *dev = connector->dev;
2290 unsigned long est_bits = edid->established_timings.t1 |
2291 (edid->established_timings.t2 << 8) |
2292 ((edid->established_timings.mfg_rsvd & 0x80) << 9);
2293 int i, modes = 0;
2294 struct detailed_mode_closure closure = {
2295 .connector = connector,
2296 .edid = edid,
2297 };
2298
2299 for (i = 0; i <= EDID_EST_TIMINGS; i++) {
2300 if (est_bits & (1<<i)) {
2301 struct drm_display_mode *newmode;
2302 newmode = drm_mode_duplicate(dev, &edid_est_modes[i]);
2303 if (newmode) {
2304 drm_mode_probed_add(connector, newmode);
2305 modes++;
2306 }
2307 }
2308 }
2309
2310 if (version_greater(edid, 1, 0))
2311 drm_for_each_detailed_block((u8 *)edid,
2312 do_established_modes, &closure);
2313
2314 return modes + closure.modes;
2315}
2316
2317static void
2318do_standard_modes(struct detailed_timing *timing, void *c)
2319{
2320 struct detailed_mode_closure *closure = c;
2321 struct detailed_non_pixel *data = &timing->data.other_data;
2322 struct drm_connector *connector = closure->connector;
2323 struct edid *edid = closure->edid;
2324
2325 if (data->type == EDID_DETAIL_STD_MODES) {
2326 int i;
2327 for (i = 0; i < 6; i++) {
2328 struct std_timing *std;
2329 struct drm_display_mode *newmode;
2330
2331 std = &data->data.timings[i];
2332 newmode = drm_mode_std(connector, edid, std);
2333 if (newmode) {
2334 drm_mode_probed_add(connector, newmode);
2335 closure->modes++;
2336 }
2337 }
2338 }
2339}
2340
2341/**
2342 * add_standard_modes - get std. modes from EDID and add them
2343 * @connector: connector to add mode(s) to
2344 * @edid: EDID block to scan
2345 *
2346 * Standard modes can be calculated using the appropriate standard (DMT,
2347 * GTF or CVT. Grab them from @edid and add them to the list.
2348 */
2349static int
2350add_standard_modes(struct drm_connector *connector, struct edid *edid)
2351{
2352 int i, modes = 0;
2353 struct detailed_mode_closure closure = {
2354 .connector = connector,
2355 .edid = edid,
2356 };
2357
2358 for (i = 0; i < EDID_STD_TIMINGS; i++) {
2359 struct drm_display_mode *newmode;
2360
2361 newmode = drm_mode_std(connector, edid,
2362 &edid->standard_timings[i]);
2363 if (newmode) {
2364 drm_mode_probed_add(connector, newmode);
2365 modes++;
2366 }
2367 }
2368
2369 if (version_greater(edid, 1, 0))
2370 drm_for_each_detailed_block((u8 *)edid, do_standard_modes,
2371 &closure);
2372
2373 /* XXX should also look for standard codes in VTB blocks */
2374
2375 return modes + closure.modes;
2376}
2377
2378static int drm_cvt_modes(struct drm_connector *connector,
2379 struct detailed_timing *timing)
2380{
2381 int i, j, modes = 0;
2382 struct drm_display_mode *newmode;
2383 struct drm_device *dev = connector->dev;
2384 struct cvt_timing *cvt;
2385 const int rates[] = { 60, 85, 75, 60, 50 };
2386 const u8 empty[3] = { 0, 0, 0 };
2387
2388 for (i = 0; i < 4; i++) {
2389 int uninitialized_var(width), height;
2390 cvt = &(timing->data.other_data.data.cvt[i]);
2391
2392 if (!memcmp(cvt->code, empty, 3))
2393 continue;
2394
2395 height = (cvt->code[0] + ((cvt->code[1] & 0xf0) << 4) + 1) * 2;
2396 switch (cvt->code[1] & 0x0c) {
2397 case 0x00:
2398 width = height * 4 / 3;
2399 break;
2400 case 0x04:
2401 width = height * 16 / 9;
2402 break;
2403 case 0x08:
2404 width = height * 16 / 10;
2405 break;
2406 case 0x0c:
2407 width = height * 15 / 9;
2408 break;
2409 }
2410
2411 for (j = 1; j < 5; j++) {
2412 if (cvt->code[2] & (1 << j)) {
2413 newmode = drm_cvt_mode(dev, width, height,
2414 rates[j], j == 0,
2415 false, false);
2416 if (newmode) {
2417 drm_mode_probed_add(connector, newmode);
2418 modes++;
2419 }
2420 }
2421 }
2422 }
2423
2424 return modes;
2425}
2426
2427static void
2428do_cvt_mode(struct detailed_timing *timing, void *c)
2429{
2430 struct detailed_mode_closure *closure = c;
2431 struct detailed_non_pixel *data = &timing->data.other_data;
2432
2433 if (data->type == EDID_DETAIL_CVT_3BYTE)
2434 closure->modes += drm_cvt_modes(closure->connector, timing);
2435}
2436
2437static int
2438add_cvt_modes(struct drm_connector *connector, struct edid *edid)
2439{
2440 struct detailed_mode_closure closure = {
2441 .connector = connector,
2442 .edid = edid,
2443 };
2444
2445 if (version_greater(edid, 1, 2))
2446 drm_for_each_detailed_block((u8 *)edid, do_cvt_mode, &closure);
2447
2448 /* XXX should also look for CVT codes in VTB blocks */
2449
2450 return closure.modes;
2451}
2452
2453static void fixup_detailed_cea_mode_clock(struct drm_display_mode *mode);
2454
2455static void
2456do_detailed_mode(struct detailed_timing *timing, void *c)
2457{
2458 struct detailed_mode_closure *closure = c;
2459 struct drm_display_mode *newmode;
2460
2461 if (timing->pixel_clock) {
2462 newmode = drm_mode_detailed(closure->connector->dev,
2463 closure->edid, timing,
2464 closure->quirks);
2465 if (!newmode)
2466 return;
2467
2468 if (closure->preferred)
2469 newmode->type |= DRM_MODE_TYPE_PREFERRED;
2470
2471 /*
2472 * Detailed modes are limited to 10kHz pixel clock resolution,
2473 * so fix up anything that looks like CEA/HDMI mode, but the clock
2474 * is just slightly off.
2475 */
2476 fixup_detailed_cea_mode_clock(newmode);
2477
2478 drm_mode_probed_add(closure->connector, newmode);
2479 closure->modes++;
2480 closure->preferred = 0;
2481 }
2482}
2483
2484/*
2485 * add_detailed_modes - Add modes from detailed timings
2486 * @connector: attached connector
2487 * @edid: EDID block to scan
2488 * @quirks: quirks to apply
2489 */
2490static int
2491add_detailed_modes(struct drm_connector *connector, struct edid *edid,
2492 u32 quirks)
2493{
2494 struct detailed_mode_closure closure = {
2495 .connector = connector,
2496 .edid = edid,
2497 .preferred = 1,
2498 .quirks = quirks,
2499 };
2500
2501 if (closure.preferred && !version_greater(edid, 1, 3))
2502 closure.preferred =
2503 (edid->features & DRM_EDID_FEATURE_PREFERRED_TIMING);
2504
2505 drm_for_each_detailed_block((u8 *)edid, do_detailed_mode, &closure);
2506
2507 return closure.modes;
2508}
2509
2510#define AUDIO_BLOCK 0x01
2511#define VIDEO_BLOCK 0x02
2512#define VENDOR_BLOCK 0x03
2513#define SPEAKER_BLOCK 0x04
2514#define VIDEO_CAPABILITY_BLOCK 0x07
2515#define EDID_BASIC_AUDIO (1 << 6)
2516#define EDID_CEA_YCRCB444 (1 << 5)
2517#define EDID_CEA_YCRCB422 (1 << 4)
2518#define EDID_CEA_VCDB_QS (1 << 6)
2519
2520/*
2521 * Search EDID for CEA extension block.
2522 */
2523static u8 *drm_find_edid_extension(struct edid *edid, int ext_id)
2524{
2525 u8 *edid_ext = NULL;
2526 int i;
2527
2528 /* No EDID or EDID extensions */
2529 if (edid == NULL || edid->extensions == 0)
2530 return NULL;
2531
2532 /* Find CEA extension */
2533 for (i = 0; i < edid->extensions; i++) {
2534 edid_ext = (u8 *)edid + EDID_LENGTH * (i + 1);
2535 if (edid_ext[0] == ext_id)
2536 break;
2537 }
2538
2539 if (i == edid->extensions)
2540 return NULL;
2541
2542 return edid_ext;
2543}
2544
2545static u8 *drm_find_cea_extension(struct edid *edid)
2546{
2547 return drm_find_edid_extension(edid, CEA_EXT);
2548}
2549
2550static u8 *drm_find_displayid_extension(struct edid *edid)
2551{
2552 return drm_find_edid_extension(edid, DISPLAYID_EXT);
2553}
2554
2555/*
2556 * Calculate the alternate clock for the CEA mode
2557 * (60Hz vs. 59.94Hz etc.)
2558 */
2559static unsigned int
2560cea_mode_alternate_clock(const struct drm_display_mode *cea_mode)
2561{
2562 unsigned int clock = cea_mode->clock;
2563
2564 if (cea_mode->vrefresh % 6 != 0)
2565 return clock;
2566
2567 /*
2568 * edid_cea_modes contains the 59.94Hz
2569 * variant for 240 and 480 line modes,
2570 * and the 60Hz variant otherwise.
2571 */
2572 if (cea_mode->vdisplay == 240 || cea_mode->vdisplay == 480)
2573 clock = DIV_ROUND_CLOSEST(clock * 1001, 1000);
2574 else
2575 clock = DIV_ROUND_CLOSEST(clock * 1000, 1001);
2576
2577 return clock;
2578}
2579
2580static u8 drm_match_cea_mode_clock_tolerance(const struct drm_display_mode *to_match,
2581 unsigned int clock_tolerance)
2582{
2583 u8 vic;
2584
2585 if (!to_match->clock)
2586 return 0;
2587
2588 for (vic = 1; vic < ARRAY_SIZE(edid_cea_modes); vic++) {
2589 const struct drm_display_mode *cea_mode = &edid_cea_modes[vic];
2590 unsigned int clock1, clock2;
2591
2592 /* Check both 60Hz and 59.94Hz */
2593 clock1 = cea_mode->clock;
2594 clock2 = cea_mode_alternate_clock(cea_mode);
2595
2596 if (abs(to_match->clock - clock1) > clock_tolerance &&
2597 abs(to_match->clock - clock2) > clock_tolerance)
2598 continue;
2599
2600 if (drm_mode_equal_no_clocks(to_match, cea_mode))
2601 return vic;
2602 }
2603
2604 return 0;
2605}
2606
2607/**
2608 * drm_match_cea_mode - look for a CEA mode matching given mode
2609 * @to_match: display mode
2610 *
2611 * Return: The CEA Video ID (VIC) of the mode or 0 if it isn't a CEA-861
2612 * mode.
2613 */
2614u8 drm_match_cea_mode(const struct drm_display_mode *to_match)
2615{
2616 u8 vic;
2617
2618 if (!to_match->clock)
2619 return 0;
2620
2621 for (vic = 1; vic < ARRAY_SIZE(edid_cea_modes); vic++) {
2622 const struct drm_display_mode *cea_mode = &edid_cea_modes[vic];
2623 unsigned int clock1, clock2;
2624
2625 /* Check both 60Hz and 59.94Hz */
2626 clock1 = cea_mode->clock;
2627 clock2 = cea_mode_alternate_clock(cea_mode);
2628
2629 if ((KHZ2PICOS(to_match->clock) == KHZ2PICOS(clock1) ||
2630 KHZ2PICOS(to_match->clock) == KHZ2PICOS(clock2)) &&
2631 drm_mode_equal_no_clocks_no_stereo(to_match, cea_mode))
2632 return vic;
2633 }
2634 return 0;
2635}
2636EXPORT_SYMBOL(drm_match_cea_mode);
2637
2638static bool drm_valid_cea_vic(u8 vic)
2639{
2640 return vic > 0 && vic < ARRAY_SIZE(edid_cea_modes);
2641}
2642
2643/**
2644 * drm_get_cea_aspect_ratio - get the picture aspect ratio corresponding to
2645 * the input VIC from the CEA mode list
2646 * @video_code: ID given to each of the CEA modes
2647 *
2648 * Returns picture aspect ratio
2649 */
2650enum hdmi_picture_aspect drm_get_cea_aspect_ratio(const u8 video_code)
2651{
2652 return edid_cea_modes[video_code].picture_aspect_ratio;
2653}
2654EXPORT_SYMBOL(drm_get_cea_aspect_ratio);
2655
2656/*
2657 * Calculate the alternate clock for HDMI modes (those from the HDMI vendor
2658 * specific block).
2659 *
2660 * It's almost like cea_mode_alternate_clock(), we just need to add an
2661 * exception for the VIC 4 mode (4096x2160@24Hz): no alternate clock for this
2662 * one.
2663 */
2664static unsigned int
2665hdmi_mode_alternate_clock(const struct drm_display_mode *hdmi_mode)
2666{
2667 if (hdmi_mode->vdisplay == 4096 && hdmi_mode->hdisplay == 2160)
2668 return hdmi_mode->clock;
2669
2670 return cea_mode_alternate_clock(hdmi_mode);
2671}
2672
2673static u8 drm_match_hdmi_mode_clock_tolerance(const struct drm_display_mode *to_match,
2674 unsigned int clock_tolerance)
2675{
2676 u8 vic;
2677
2678 if (!to_match->clock)
2679 return 0;
2680
2681 for (vic = 1; vic < ARRAY_SIZE(edid_4k_modes); vic++) {
2682 const struct drm_display_mode *hdmi_mode = &edid_4k_modes[vic];
2683 unsigned int clock1, clock2;
2684
2685 /* Make sure to also match alternate clocks */
2686 clock1 = hdmi_mode->clock;
2687 clock2 = hdmi_mode_alternate_clock(hdmi_mode);
2688
2689 if (abs(to_match->clock - clock1) > clock_tolerance &&
2690 abs(to_match->clock - clock2) > clock_tolerance)
2691 continue;
2692
2693 if (drm_mode_equal_no_clocks(to_match, hdmi_mode))
2694 return vic;
2695 }
2696
2697 return 0;
2698}
2699
2700/*
2701 * drm_match_hdmi_mode - look for a HDMI mode matching given mode
2702 * @to_match: display mode
2703 *
2704 * An HDMI mode is one defined in the HDMI vendor specific block.
2705 *
2706 * Returns the HDMI Video ID (VIC) of the mode or 0 if it isn't one.
2707 */
2708static u8 drm_match_hdmi_mode(const struct drm_display_mode *to_match)
2709{
2710 u8 vic;
2711
2712 if (!to_match->clock)
2713 return 0;
2714
2715 for (vic = 1; vic < ARRAY_SIZE(edid_4k_modes); vic++) {
2716 const struct drm_display_mode *hdmi_mode = &edid_4k_modes[vic];
2717 unsigned int clock1, clock2;
2718
2719 /* Make sure to also match alternate clocks */
2720 clock1 = hdmi_mode->clock;
2721 clock2 = hdmi_mode_alternate_clock(hdmi_mode);
2722
2723 if ((KHZ2PICOS(to_match->clock) == KHZ2PICOS(clock1) ||
2724 KHZ2PICOS(to_match->clock) == KHZ2PICOS(clock2)) &&
2725 drm_mode_equal_no_clocks_no_stereo(to_match, hdmi_mode))
2726 return vic;
2727 }
2728 return 0;
2729}
2730
2731static bool drm_valid_hdmi_vic(u8 vic)
2732{
2733 return vic > 0 && vic < ARRAY_SIZE(edid_4k_modes);
2734}
2735
2736static int
2737add_alternate_cea_modes(struct drm_connector *connector, struct edid *edid)
2738{
2739 struct drm_device *dev = connector->dev;
2740 struct drm_display_mode *mode, *tmp;
2741 LIST_HEAD(list);
2742 int modes = 0;
2743
2744 /* Don't add CEA modes if the CEA extension block is missing */
2745 if (!drm_find_cea_extension(edid))
2746 return 0;
2747
2748 /*
2749 * Go through all probed modes and create a new mode
2750 * with the alternate clock for certain CEA modes.
2751 */
2752 list_for_each_entry(mode, &connector->probed_modes, head) {
2753 const struct drm_display_mode *cea_mode = NULL;
2754 struct drm_display_mode *newmode;
2755 u8 vic = drm_match_cea_mode(mode);
2756 unsigned int clock1, clock2;
2757
2758 if (drm_valid_cea_vic(vic)) {
2759 cea_mode = &edid_cea_modes[vic];
2760 clock2 = cea_mode_alternate_clock(cea_mode);
2761 } else {
2762 vic = drm_match_hdmi_mode(mode);
2763 if (drm_valid_hdmi_vic(vic)) {
2764 cea_mode = &edid_4k_modes[vic];
2765 clock2 = hdmi_mode_alternate_clock(cea_mode);
2766 }
2767 }
2768
2769 if (!cea_mode)
2770 continue;
2771
2772 clock1 = cea_mode->clock;
2773
2774 if (clock1 == clock2)
2775 continue;
2776
2777 if (mode->clock != clock1 && mode->clock != clock2)
2778 continue;
2779
2780 newmode = drm_mode_duplicate(dev, cea_mode);
2781 if (!newmode)
2782 continue;
2783
2784 /* Carry over the stereo flags */
2785 newmode->flags |= mode->flags & DRM_MODE_FLAG_3D_MASK;
2786
2787 /*
2788 * The current mode could be either variant. Make
2789 * sure to pick the "other" clock for the new mode.
2790 */
2791 if (mode->clock != clock1)
2792 newmode->clock = clock1;
2793 else
2794 newmode->clock = clock2;
2795
2796 list_add_tail(&newmode->head, &list);
2797 }
2798
2799 list_for_each_entry_safe(mode, tmp, &list, head) {
2800 list_del(&mode->head);
2801 drm_mode_probed_add(connector, mode);
2802 modes++;
2803 }
2804
2805 return modes;
2806}
2807
2808static struct drm_display_mode *
2809drm_display_mode_from_vic_index(struct drm_connector *connector,
2810 const u8 *video_db, u8 video_len,
2811 u8 video_index)
2812{
2813 struct drm_device *dev = connector->dev;
2814 struct drm_display_mode *newmode;
2815 u8 vic;
2816
2817 if (video_db == NULL || video_index >= video_len)
2818 return NULL;
2819
2820 /* CEA modes are numbered 1..127 */
2821 vic = (video_db[video_index] & 127);
2822 if (!drm_valid_cea_vic(vic))
2823 return NULL;
2824
2825 newmode = drm_mode_duplicate(dev, &edid_cea_modes[vic]);
2826 if (!newmode)
2827 return NULL;
2828
2829 newmode->vrefresh = 0;
2830
2831 return newmode;
2832}
2833
2834static int
2835do_cea_modes(struct drm_connector *connector, const u8 *db, u8 len)
2836{
2837 int i, modes = 0;
2838
2839 for (i = 0; i < len; i++) {
2840 struct drm_display_mode *mode;
2841 mode = drm_display_mode_from_vic_index(connector, db, len, i);
2842 if (mode) {
2843 drm_mode_probed_add(connector, mode);
2844 modes++;
2845 }
2846 }
2847
2848 return modes;
2849}
2850
2851struct stereo_mandatory_mode {
2852 int width, height, vrefresh;
2853 unsigned int flags;
2854};
2855
2856static const struct stereo_mandatory_mode stereo_mandatory_modes[] = {
2857 { 1920, 1080, 24, DRM_MODE_FLAG_3D_TOP_AND_BOTTOM },
2858 { 1920, 1080, 24, DRM_MODE_FLAG_3D_FRAME_PACKING },
2859 { 1920, 1080, 50,
2860 DRM_MODE_FLAG_INTERLACE | DRM_MODE_FLAG_3D_SIDE_BY_SIDE_HALF },
2861 { 1920, 1080, 60,
2862 DRM_MODE_FLAG_INTERLACE | DRM_MODE_FLAG_3D_SIDE_BY_SIDE_HALF },
2863 { 1280, 720, 50, DRM_MODE_FLAG_3D_TOP_AND_BOTTOM },
2864 { 1280, 720, 50, DRM_MODE_FLAG_3D_FRAME_PACKING },
2865 { 1280, 720, 60, DRM_MODE_FLAG_3D_TOP_AND_BOTTOM },
2866 { 1280, 720, 60, DRM_MODE_FLAG_3D_FRAME_PACKING }
2867};
2868
2869static bool
2870stereo_match_mandatory(const struct drm_display_mode *mode,
2871 const struct stereo_mandatory_mode *stereo_mode)
2872{
2873 unsigned int interlaced = mode->flags & DRM_MODE_FLAG_INTERLACE;
2874
2875 return mode->hdisplay == stereo_mode->width &&
2876 mode->vdisplay == stereo_mode->height &&
2877 interlaced == (stereo_mode->flags & DRM_MODE_FLAG_INTERLACE) &&
2878 drm_mode_vrefresh(mode) == stereo_mode->vrefresh;
2879}
2880
2881static int add_hdmi_mandatory_stereo_modes(struct drm_connector *connector)
2882{
2883 struct drm_device *dev = connector->dev;
2884 const struct drm_display_mode *mode;
2885 struct list_head stereo_modes;
2886 int modes = 0, i;
2887
2888 INIT_LIST_HEAD(&stereo_modes);
2889
2890 list_for_each_entry(mode, &connector->probed_modes, head) {
2891 for (i = 0; i < ARRAY_SIZE(stereo_mandatory_modes); i++) {
2892 const struct stereo_mandatory_mode *mandatory;
2893 struct drm_display_mode *new_mode;
2894
2895 if (!stereo_match_mandatory(mode,
2896 &stereo_mandatory_modes[i]))
2897 continue;
2898
2899 mandatory = &stereo_mandatory_modes[i];
2900 new_mode = drm_mode_duplicate(dev, mode);
2901 if (!new_mode)
2902 continue;
2903
2904 new_mode->flags |= mandatory->flags;
2905 list_add_tail(&new_mode->head, &stereo_modes);
2906 modes++;
2907 }
2908 }
2909
2910 list_splice_tail(&stereo_modes, &connector->probed_modes);
2911
2912 return modes;
2913}
2914
2915static int add_hdmi_mode(struct drm_connector *connector, u8 vic)
2916{
2917 struct drm_device *dev = connector->dev;
2918 struct drm_display_mode *newmode;
2919
2920 if (!drm_valid_hdmi_vic(vic)) {
2921 DRM_ERROR("Unknown HDMI VIC: %d\n", vic);
2922 return 0;
2923 }
2924
2925 newmode = drm_mode_duplicate(dev, &edid_4k_modes[vic]);
2926 if (!newmode)
2927 return 0;
2928
2929 drm_mode_probed_add(connector, newmode);
2930
2931 return 1;
2932}
2933
2934static int add_3d_struct_modes(struct drm_connector *connector, u16 structure,
2935 const u8 *video_db, u8 video_len, u8 video_index)
2936{
2937 struct drm_display_mode *newmode;
2938 int modes = 0;
2939
2940 if (structure & (1 << 0)) {
2941 newmode = drm_display_mode_from_vic_index(connector, video_db,
2942 video_len,
2943 video_index);
2944 if (newmode) {
2945 newmode->flags |= DRM_MODE_FLAG_3D_FRAME_PACKING;
2946 drm_mode_probed_add(connector, newmode);
2947 modes++;
2948 }
2949 }
2950 if (structure & (1 << 6)) {
2951 newmode = drm_display_mode_from_vic_index(connector, video_db,
2952 video_len,
2953 video_index);
2954 if (newmode) {
2955 newmode->flags |= DRM_MODE_FLAG_3D_TOP_AND_BOTTOM;
2956 drm_mode_probed_add(connector, newmode);
2957 modes++;
2958 }
2959 }
2960 if (structure & (1 << 8)) {
2961 newmode = drm_display_mode_from_vic_index(connector, video_db,
2962 video_len,
2963 video_index);
2964 if (newmode) {
2965 newmode->flags |= DRM_MODE_FLAG_3D_SIDE_BY_SIDE_HALF;
2966 drm_mode_probed_add(connector, newmode);
2967 modes++;
2968 }
2969 }
2970
2971 return modes;
2972}
2973
2974/*
2975 * do_hdmi_vsdb_modes - Parse the HDMI Vendor Specific data block
2976 * @connector: connector corresponding to the HDMI sink
2977 * @db: start of the CEA vendor specific block
2978 * @len: length of the CEA block payload, ie. one can access up to db[len]
2979 *
2980 * Parses the HDMI VSDB looking for modes to add to @connector. This function
2981 * also adds the stereo 3d modes when applicable.
2982 */
2983static int
2984do_hdmi_vsdb_modes(struct drm_connector *connector, const u8 *db, u8 len,
2985 const u8 *video_db, u8 video_len)
2986{
2987 int modes = 0, offset = 0, i, multi_present = 0, multi_len;
2988 u8 vic_len, hdmi_3d_len = 0;
2989 u16 mask;
2990 u16 structure_all;
2991
2992 if (len < 8)
2993 goto out;
2994
2995 /* no HDMI_Video_Present */
2996 if (!(db[8] & (1 << 5)))
2997 goto out;
2998
2999 /* Latency_Fields_Present */
3000 if (db[8] & (1 << 7))
3001 offset += 2;
3002
3003 /* I_Latency_Fields_Present */
3004 if (db[8] & (1 << 6))
3005 offset += 2;
3006
3007 /* the declared length is not long enough for the 2 first bytes
3008 * of additional video format capabilities */
3009 if (len < (8 + offset + 2))
3010 goto out;
3011
3012 /* 3D_Present */
3013 offset++;
3014 if (db[8 + offset] & (1 << 7)) {
3015 modes += add_hdmi_mandatory_stereo_modes(connector);
3016
3017 /* 3D_Multi_present */
3018 multi_present = (db[8 + offset] & 0x60) >> 5;
3019 }
3020
3021 offset++;
3022 vic_len = db[8 + offset] >> 5;
3023 hdmi_3d_len = db[8 + offset] & 0x1f;
3024
3025 for (i = 0; i < vic_len && len >= (9 + offset + i); i++) {
3026 u8 vic;
3027
3028 vic = db[9 + offset + i];
3029 modes += add_hdmi_mode(connector, vic);
3030 }
3031 offset += 1 + vic_len;
3032
3033 if (multi_present == 1)
3034 multi_len = 2;
3035 else if (multi_present == 2)
3036 multi_len = 4;
3037 else
3038 multi_len = 0;
3039
3040 if (len < (8 + offset + hdmi_3d_len - 1))
3041 goto out;
3042
3043 if (hdmi_3d_len < multi_len)
3044 goto out;
3045
3046 if (multi_present == 1 || multi_present == 2) {
3047 /* 3D_Structure_ALL */
3048 structure_all = (db[8 + offset] << 8) | db[9 + offset];
3049
3050 /* check if 3D_MASK is present */
3051 if (multi_present == 2)
3052 mask = (db[10 + offset] << 8) | db[11 + offset];
3053 else
3054 mask = 0xffff;
3055
3056 for (i = 0; i < 16; i++) {
3057 if (mask & (1 << i))
3058 modes += add_3d_struct_modes(connector,
3059 structure_all,
3060 video_db,
3061 video_len, i);
3062 }
3063 }
3064
3065 offset += multi_len;
3066
3067 for (i = 0; i < (hdmi_3d_len - multi_len); i++) {
3068 int vic_index;
3069 struct drm_display_mode *newmode = NULL;
3070 unsigned int newflag = 0;
3071 bool detail_present;
3072
3073 detail_present = ((db[8 + offset + i] & 0x0f) > 7);
3074
3075 if (detail_present && (i + 1 == hdmi_3d_len - multi_len))
3076 break;
3077
3078 /* 2D_VIC_order_X */
3079 vic_index = db[8 + offset + i] >> 4;
3080
3081 /* 3D_Structure_X */
3082 switch (db[8 + offset + i] & 0x0f) {
3083 case 0:
3084 newflag = DRM_MODE_FLAG_3D_FRAME_PACKING;
3085 break;
3086 case 6:
3087 newflag = DRM_MODE_FLAG_3D_TOP_AND_BOTTOM;
3088 break;
3089 case 8:
3090 /* 3D_Detail_X */
3091 if ((db[9 + offset + i] >> 4) == 1)
3092 newflag = DRM_MODE_FLAG_3D_SIDE_BY_SIDE_HALF;
3093 break;
3094 }
3095
3096 if (newflag != 0) {
3097 newmode = drm_display_mode_from_vic_index(connector,
3098 video_db,
3099 video_len,
3100 vic_index);
3101
3102 if (newmode) {
3103 newmode->flags |= newflag;
3104 drm_mode_probed_add(connector, newmode);
3105 modes++;
3106 }
3107 }
3108
3109 if (detail_present)
3110 i++;
3111 }
3112
3113out:
3114 return modes;
3115}
3116
3117static int
3118cea_db_payload_len(const u8 *db)
3119{
3120 return db[0] & 0x1f;
3121}
3122
3123static int
3124cea_db_tag(const u8 *db)
3125{
3126 return db[0] >> 5;
3127}
3128
3129static int
3130cea_revision(const u8 *cea)
3131{
3132 return cea[1];
3133}
3134
3135static int
3136cea_db_offsets(const u8 *cea, int *start, int *end)
3137{
3138 /* Data block offset in CEA extension block */
3139 *start = 4;
3140 *end = cea[2];
3141 if (*end == 0)
3142 *end = 127;
3143 if (*end < 4 || *end > 127)
3144 return -ERANGE;
3145 return 0;
3146}
3147
3148static bool cea_db_is_hdmi_vsdb(const u8 *db)
3149{
3150 int hdmi_id;
3151
3152 if (cea_db_tag(db) != VENDOR_BLOCK)
3153 return false;
3154
3155 if (cea_db_payload_len(db) < 5)
3156 return false;
3157
3158 hdmi_id = db[1] | (db[2] << 8) | (db[3] << 16);
3159
3160 return hdmi_id == HDMI_IEEE_OUI;
3161}
3162
3163#define for_each_cea_db(cea, i, start, end) \
3164 for ((i) = (start); (i) < (end) && (i) + cea_db_payload_len(&(cea)[(i)]) < (end); (i) += cea_db_payload_len(&(cea)[(i)]) + 1)
3165
3166static int
3167add_cea_modes(struct drm_connector *connector, struct edid *edid)
3168{
3169 const u8 *cea = drm_find_cea_extension(edid);
3170 const u8 *db, *hdmi = NULL, *video = NULL;
3171 u8 dbl, hdmi_len, video_len = 0;
3172 int modes = 0;
3173
3174 if (cea && cea_revision(cea) >= 3) {
3175 int i, start, end;
3176
3177 if (cea_db_offsets(cea, &start, &end))
3178 return 0;
3179
3180 for_each_cea_db(cea, i, start, end) {
3181 db = &cea[i];
3182 dbl = cea_db_payload_len(db);
3183
3184 if (cea_db_tag(db) == VIDEO_BLOCK) {
3185 video = db + 1;
3186 video_len = dbl;
3187 modes += do_cea_modes(connector, video, dbl);
3188 }
3189 else if (cea_db_is_hdmi_vsdb(db)) {
3190 hdmi = db;
3191 hdmi_len = dbl;
3192 }
3193 }
3194 }
3195
3196 /*
3197 * We parse the HDMI VSDB after having added the cea modes as we will
3198 * be patching their flags when the sink supports stereo 3D.
3199 */
3200 if (hdmi)
3201 modes += do_hdmi_vsdb_modes(connector, hdmi, hdmi_len, video,
3202 video_len);
3203
3204 return modes;
3205}
3206
3207static void fixup_detailed_cea_mode_clock(struct drm_display_mode *mode)
3208{
3209 const struct drm_display_mode *cea_mode;
3210 int clock1, clock2, clock;
3211 u8 vic;
3212 const char *type;
3213
3214 /*
3215 * allow 5kHz clock difference either way to account for
3216 * the 10kHz clock resolution limit of detailed timings.
3217 */
3218 vic = drm_match_cea_mode_clock_tolerance(mode, 5);
3219 if (drm_valid_cea_vic(vic)) {
3220 type = "CEA";
3221 cea_mode = &edid_cea_modes[vic];
3222 clock1 = cea_mode->clock;
3223 clock2 = cea_mode_alternate_clock(cea_mode);
3224 } else {
3225 vic = drm_match_hdmi_mode_clock_tolerance(mode, 5);
3226 if (drm_valid_hdmi_vic(vic)) {
3227 type = "HDMI";
3228 cea_mode = &edid_4k_modes[vic];
3229 clock1 = cea_mode->clock;
3230 clock2 = hdmi_mode_alternate_clock(cea_mode);
3231 } else {
3232 return;
3233 }
3234 }
3235
3236 /* pick whichever is closest */
3237 if (abs(mode->clock - clock1) < abs(mode->clock - clock2))
3238 clock = clock1;
3239 else
3240 clock = clock2;
3241
3242 if (mode->clock == clock)
3243 return;
3244
3245 DRM_DEBUG("detailed mode matches %s VIC %d, adjusting clock %d -> %d\n",
3246 type, vic, mode->clock, clock);
3247 mode->clock = clock;
3248}
3249
3250static void
3251parse_hdmi_vsdb(struct drm_connector *connector, const u8 *db)
3252{
3253 u8 len = cea_db_payload_len(db);
3254
3255 if (len >= 6) {
3256 connector->eld[5] |= (db[6] >> 7) << 1; /* Supports_AI */
3257 connector->dvi_dual = db[6] & 1;
3258 }
3259 if (len >= 7)
3260 connector->max_tmds_clock = db[7] * 5;
3261 if (len >= 8) {
3262 connector->latency_present[0] = db[8] >> 7;
3263 connector->latency_present[1] = (db[8] >> 6) & 1;
3264 }
3265 if (len >= 9)
3266 connector->video_latency[0] = db[9];
3267 if (len >= 10)
3268 connector->audio_latency[0] = db[10];
3269 if (len >= 11)
3270 connector->video_latency[1] = db[11];
3271 if (len >= 12)
3272 connector->audio_latency[1] = db[12];
3273
3274 DRM_DEBUG_KMS("HDMI: DVI dual %d, "
3275 "max TMDS clock %d, "
3276 "latency present %d %d, "
3277 "video latency %d %d, "
3278 "audio latency %d %d\n",
3279 connector->dvi_dual,
3280 connector->max_tmds_clock,
3281 (int) connector->latency_present[0],
3282 (int) connector->latency_present[1],
3283 connector->video_latency[0],
3284 connector->video_latency[1],
3285 connector->audio_latency[0],
3286 connector->audio_latency[1]);
3287}
3288
3289static void
3290monitor_name(struct detailed_timing *t, void *data)
3291{
3292 if (t->data.other_data.type == EDID_DETAIL_MONITOR_NAME)
3293 *(u8 **)data = t->data.other_data.data.str.str;
3294}
3295
3296/**
3297 * drm_edid_to_eld - build ELD from EDID
3298 * @connector: connector corresponding to the HDMI/DP sink
3299 * @edid: EDID to parse
3300 *
3301 * Fill the ELD (EDID-Like Data) buffer for passing to the audio driver. The
3302 * Conn_Type, HDCP and Port_ID ELD fields are left for the graphics driver to
3303 * fill in.
3304 */
3305void drm_edid_to_eld(struct drm_connector *connector, struct edid *edid)
3306{
3307 uint8_t *eld = connector->eld;
3308 u8 *cea;
3309 u8 *name;
3310 u8 *db;
3311 int total_sad_count = 0;
3312 int mnl;
3313 int dbl;
3314
3315 memset(eld, 0, sizeof(connector->eld));
3316
3317 cea = drm_find_cea_extension(edid);
3318 if (!cea) {
3319 DRM_DEBUG_KMS("ELD: no CEA Extension found\n");
3320 return;
3321 }
3322
3323 name = NULL;
3324 drm_for_each_detailed_block((u8 *)edid, monitor_name, &name);
3325 /* max: 13 bytes EDID, 16 bytes ELD */
3326 for (mnl = 0; name && mnl < 13; mnl++) {
3327 if (name[mnl] == 0x0a)
3328 break;
3329 eld[20 + mnl] = name[mnl];
3330 }
3331 eld[4] = (cea[1] << 5) | mnl;
3332 DRM_DEBUG_KMS("ELD monitor %s\n", eld + 20);
3333
3334 eld[0] = 2 << 3; /* ELD version: 2 */
3335
3336 eld[16] = edid->mfg_id[0];
3337 eld[17] = edid->mfg_id[1];
3338 eld[18] = edid->prod_code[0];
3339 eld[19] = edid->prod_code[1];
3340
3341 if (cea_revision(cea) >= 3) {
3342 int i, start, end;
3343
3344 if (cea_db_offsets(cea, &start, &end)) {
3345 start = 0;
3346 end = 0;
3347 }
3348
3349 for_each_cea_db(cea, i, start, end) {
3350 db = &cea[i];
3351 dbl = cea_db_payload_len(db);
3352
3353 switch (cea_db_tag(db)) {
3354 int sad_count;
3355
3356 case AUDIO_BLOCK:
3357 /* Audio Data Block, contains SADs */
3358 sad_count = min(dbl / 3, 15 - total_sad_count);
3359 if (sad_count >= 1)
3360 memcpy(eld + 20 + mnl + total_sad_count * 3,
3361 &db[1], sad_count * 3);
3362 total_sad_count += sad_count;
3363 break;
3364 case SPEAKER_BLOCK:
3365 /* Speaker Allocation Data Block */
3366 if (dbl >= 1)
3367 eld[7] = db[1];
3368 break;
3369 case VENDOR_BLOCK:
3370 /* HDMI Vendor-Specific Data Block */
3371 if (cea_db_is_hdmi_vsdb(db))
3372 parse_hdmi_vsdb(connector, db);
3373 break;
3374 default:
3375 break;
3376 }
3377 }
3378 }
3379 eld[5] |= total_sad_count << 4;
3380
3381 eld[DRM_ELD_BASELINE_ELD_LEN] =
3382 DIV_ROUND_UP(drm_eld_calc_baseline_block_size(eld), 4);
3383
3384 DRM_DEBUG_KMS("ELD size %d, SAD count %d\n",
3385 drm_eld_size(eld), total_sad_count);
3386}
3387EXPORT_SYMBOL(drm_edid_to_eld);
3388
3389/**
3390 * drm_edid_to_sad - extracts SADs from EDID
3391 * @edid: EDID to parse
3392 * @sads: pointer that will be set to the extracted SADs
3393 *
3394 * Looks for CEA EDID block and extracts SADs (Short Audio Descriptors) from it.
3395 *
3396 * Note: The returned pointer needs to be freed using kfree().
3397 *
3398 * Return: The number of found SADs or negative number on error.
3399 */
3400int drm_edid_to_sad(struct edid *edid, struct cea_sad **sads)
3401{
3402 int count = 0;
3403 int i, start, end, dbl;
3404 u8 *cea;
3405
3406 cea = drm_find_cea_extension(edid);
3407 if (!cea) {
3408 DRM_DEBUG_KMS("SAD: no CEA Extension found\n");
3409 return -ENOENT;
3410 }
3411
3412 if (cea_revision(cea) < 3) {
3413 DRM_DEBUG_KMS("SAD: wrong CEA revision\n");
3414 return -ENOTSUPP;
3415 }
3416
3417 if (cea_db_offsets(cea, &start, &end)) {
3418 DRM_DEBUG_KMS("SAD: invalid data block offsets\n");
3419 return -EPROTO;
3420 }
3421
3422 for_each_cea_db(cea, i, start, end) {
3423 u8 *db = &cea[i];
3424
3425 if (cea_db_tag(db) == AUDIO_BLOCK) {
3426 int j;
3427 dbl = cea_db_payload_len(db);
3428
3429 count = dbl / 3; /* SAD is 3B */
3430 *sads = kcalloc(count, sizeof(**sads), GFP_KERNEL);
3431 if (!*sads)
3432 return -ENOMEM;
3433 for (j = 0; j < count; j++) {
3434 u8 *sad = &db[1 + j * 3];
3435
3436 (*sads)[j].format = (sad[0] & 0x78) >> 3;
3437 (*sads)[j].channels = sad[0] & 0x7;
3438 (*sads)[j].freq = sad[1] & 0x7F;
3439 (*sads)[j].byte2 = sad[2];
3440 }
3441 break;
3442 }
3443 }
3444
3445 return count;
3446}
3447EXPORT_SYMBOL(drm_edid_to_sad);
3448
3449/**
3450 * drm_edid_to_speaker_allocation - extracts Speaker Allocation Data Blocks from EDID
3451 * @edid: EDID to parse
3452 * @sadb: pointer to the speaker block
3453 *
3454 * Looks for CEA EDID block and extracts the Speaker Allocation Data Block from it.
3455 *
3456 * Note: The returned pointer needs to be freed using kfree().
3457 *
3458 * Return: The number of found Speaker Allocation Blocks or negative number on
3459 * error.
3460 */
3461int drm_edid_to_speaker_allocation(struct edid *edid, u8 **sadb)
3462{
3463 int count = 0;
3464 int i, start, end, dbl;
3465 const u8 *cea;
3466
3467 cea = drm_find_cea_extension(edid);
3468 if (!cea) {
3469 DRM_DEBUG_KMS("SAD: no CEA Extension found\n");
3470 return -ENOENT;
3471 }
3472
3473 if (cea_revision(cea) < 3) {
3474 DRM_DEBUG_KMS("SAD: wrong CEA revision\n");
3475 return -ENOTSUPP;
3476 }
3477
3478 if (cea_db_offsets(cea, &start, &end)) {
3479 DRM_DEBUG_KMS("SAD: invalid data block offsets\n");
3480 return -EPROTO;
3481 }
3482
3483 for_each_cea_db(cea, i, start, end) {
3484 const u8 *db = &cea[i];
3485
3486 if (cea_db_tag(db) == SPEAKER_BLOCK) {
3487 dbl = cea_db_payload_len(db);
3488
3489 /* Speaker Allocation Data Block */
3490 if (dbl == 3) {
3491 *sadb = kmemdup(&db[1], dbl, GFP_KERNEL);
3492 if (!*sadb)
3493 return -ENOMEM;
3494 count = dbl;
3495 break;
3496 }
3497 }
3498 }
3499
3500 return count;
3501}
3502EXPORT_SYMBOL(drm_edid_to_speaker_allocation);
3503
3504/**
3505 * drm_av_sync_delay - compute the HDMI/DP sink audio-video sync delay
3506 * @connector: connector associated with the HDMI/DP sink
3507 * @mode: the display mode
3508 *
3509 * Return: The HDMI/DP sink's audio-video sync delay in milliseconds or 0 if
3510 * the sink doesn't support audio or video.
3511 */
3512int drm_av_sync_delay(struct drm_connector *connector,
3513 const struct drm_display_mode *mode)
3514{
3515 int i = !!(mode->flags & DRM_MODE_FLAG_INTERLACE);
3516 int a, v;
3517
3518 if (!connector->latency_present[0])
3519 return 0;
3520 if (!connector->latency_present[1])
3521 i = 0;
3522
3523 a = connector->audio_latency[i];
3524 v = connector->video_latency[i];
3525
3526 /*
3527 * HDMI/DP sink doesn't support audio or video?
3528 */
3529 if (a == 255 || v == 255)
3530 return 0;
3531
3532 /*
3533 * Convert raw EDID values to millisecond.
3534 * Treat unknown latency as 0ms.
3535 */
3536 if (a)
3537 a = min(2 * (a - 1), 500);
3538 if (v)
3539 v = min(2 * (v - 1), 500);
3540
3541 return max(v - a, 0);
3542}
3543EXPORT_SYMBOL(drm_av_sync_delay);
3544
3545/**
3546 * drm_select_eld - select one ELD from multiple HDMI/DP sinks
3547 * @encoder: the encoder just changed display mode
3548 *
3549 * It's possible for one encoder to be associated with multiple HDMI/DP sinks.
3550 * The policy is now hard coded to simply use the first HDMI/DP sink's ELD.
3551 *
3552 * Return: The connector associated with the first HDMI/DP sink that has ELD
3553 * attached to it.
3554 */
3555struct drm_connector *drm_select_eld(struct drm_encoder *encoder)
3556{
3557 struct drm_connector *connector;
3558 struct drm_device *dev = encoder->dev;
3559
3560 WARN_ON(!mutex_is_locked(&dev->mode_config.mutex));
3561 WARN_ON(!drm_modeset_is_locked(&dev->mode_config.connection_mutex));
3562
3563 drm_for_each_connector(connector, dev)
3564 if (connector->encoder == encoder && connector->eld[0])
3565 return connector;
3566
3567 return NULL;
3568}
3569EXPORT_SYMBOL(drm_select_eld);
3570
3571/**
3572 * drm_detect_hdmi_monitor - detect whether monitor is HDMI
3573 * @edid: monitor EDID information
3574 *
3575 * Parse the CEA extension according to CEA-861-B.
3576 *
3577 * Return: True if the monitor is HDMI, false if not or unknown.
3578 */
3579bool drm_detect_hdmi_monitor(struct edid *edid)
3580{
3581 u8 *edid_ext;
3582 int i;
3583 int start_offset, end_offset;
3584
3585 edid_ext = drm_find_cea_extension(edid);
3586 if (!edid_ext)
3587 return false;
3588
3589 if (cea_db_offsets(edid_ext, &start_offset, &end_offset))
3590 return false;
3591
3592 /*
3593 * Because HDMI identifier is in Vendor Specific Block,
3594 * search it from all data blocks of CEA extension.
3595 */
3596 for_each_cea_db(edid_ext, i, start_offset, end_offset) {
3597 if (cea_db_is_hdmi_vsdb(&edid_ext[i]))
3598 return true;
3599 }
3600
3601 return false;
3602}
3603EXPORT_SYMBOL(drm_detect_hdmi_monitor);
3604
3605/**
3606 * drm_detect_monitor_audio - check monitor audio capability
3607 * @edid: EDID block to scan
3608 *
3609 * Monitor should have CEA extension block.
3610 * If monitor has 'basic audio', but no CEA audio blocks, it's 'basic
3611 * audio' only. If there is any audio extension block and supported
3612 * audio format, assume at least 'basic audio' support, even if 'basic
3613 * audio' is not defined in EDID.
3614 *
3615 * Return: True if the monitor supports audio, false otherwise.
3616 */
3617bool drm_detect_monitor_audio(struct edid *edid)
3618{
3619 u8 *edid_ext;
3620 int i, j;
3621 bool has_audio = false;
3622 int start_offset, end_offset;
3623
3624 edid_ext = drm_find_cea_extension(edid);
3625 if (!edid_ext)
3626 goto end;
3627
3628 has_audio = ((edid_ext[3] & EDID_BASIC_AUDIO) != 0);
3629
3630 if (has_audio) {
3631 DRM_DEBUG_KMS("Monitor has basic audio support\n");
3632 goto end;
3633 }
3634
3635 if (cea_db_offsets(edid_ext, &start_offset, &end_offset))
3636 goto end;
3637
3638 for_each_cea_db(edid_ext, i, start_offset, end_offset) {
3639 if (cea_db_tag(&edid_ext[i]) == AUDIO_BLOCK) {
3640 has_audio = true;
3641 for (j = 1; j < cea_db_payload_len(&edid_ext[i]) + 1; j += 3)
3642 DRM_DEBUG_KMS("CEA audio format %d\n",
3643 (edid_ext[i + j] >> 3) & 0xf);
3644 goto end;
3645 }
3646 }
3647end:
3648 return has_audio;
3649}
3650EXPORT_SYMBOL(drm_detect_monitor_audio);
3651
3652/**
3653 * drm_rgb_quant_range_selectable - is RGB quantization range selectable?
3654 * @edid: EDID block to scan
3655 *
3656 * Check whether the monitor reports the RGB quantization range selection
3657 * as supported. The AVI infoframe can then be used to inform the monitor
3658 * which quantization range (full or limited) is used.
3659 *
3660 * Return: True if the RGB quantization range is selectable, false otherwise.
3661 */
3662bool drm_rgb_quant_range_selectable(struct edid *edid)
3663{
3664 u8 *edid_ext;
3665 int i, start, end;
3666
3667 edid_ext = drm_find_cea_extension(edid);
3668 if (!edid_ext)
3669 return false;
3670
3671 if (cea_db_offsets(edid_ext, &start, &end))
3672 return false;
3673
3674 for_each_cea_db(edid_ext, i, start, end) {
3675 if (cea_db_tag(&edid_ext[i]) == VIDEO_CAPABILITY_BLOCK &&
3676 cea_db_payload_len(&edid_ext[i]) == 2) {
3677 DRM_DEBUG_KMS("CEA VCDB 0x%02x\n", edid_ext[i + 2]);
3678 return edid_ext[i + 2] & EDID_CEA_VCDB_QS;
3679 }
3680 }
3681
3682 return false;
3683}
3684EXPORT_SYMBOL(drm_rgb_quant_range_selectable);
3685
3686/**
3687 * drm_assign_hdmi_deep_color_info - detect whether monitor supports
3688 * hdmi deep color modes and update drm_display_info if so.
3689 * @edid: monitor EDID information
3690 * @info: Updated with maximum supported deep color bpc and color format
3691 * if deep color supported.
3692 * @connector: DRM connector, used only for debug output
3693 *
3694 * Parse the CEA extension according to CEA-861-B.
3695 * Return true if HDMI deep color supported, false if not or unknown.
3696 */
3697static bool drm_assign_hdmi_deep_color_info(struct edid *edid,
3698 struct drm_display_info *info,
3699 struct drm_connector *connector)
3700{
3701 u8 *edid_ext, *hdmi;
3702 int i;
3703 int start_offset, end_offset;
3704 unsigned int dc_bpc = 0;
3705
3706 edid_ext = drm_find_cea_extension(edid);
3707 if (!edid_ext)
3708 return false;
3709
3710 if (cea_db_offsets(edid_ext, &start_offset, &end_offset))
3711 return false;
3712
3713 /*
3714 * Because HDMI identifier is in Vendor Specific Block,
3715 * search it from all data blocks of CEA extension.
3716 */
3717 for_each_cea_db(edid_ext, i, start_offset, end_offset) {
3718 if (cea_db_is_hdmi_vsdb(&edid_ext[i])) {
3719 /* HDMI supports at least 8 bpc */
3720 info->bpc = 8;
3721
3722 hdmi = &edid_ext[i];
3723 if (cea_db_payload_len(hdmi) < 6)
3724 return false;
3725
3726 if (hdmi[6] & DRM_EDID_HDMI_DC_30) {
3727 dc_bpc = 10;
3728 info->edid_hdmi_dc_modes |= DRM_EDID_HDMI_DC_30;
3729 DRM_DEBUG("%s: HDMI sink does deep color 30.\n",
3730 connector->name);
3731 }
3732
3733 if (hdmi[6] & DRM_EDID_HDMI_DC_36) {
3734 dc_bpc = 12;
3735 info->edid_hdmi_dc_modes |= DRM_EDID_HDMI_DC_36;
3736 DRM_DEBUG("%s: HDMI sink does deep color 36.\n",
3737 connector->name);
3738 }
3739
3740 if (hdmi[6] & DRM_EDID_HDMI_DC_48) {
3741 dc_bpc = 16;
3742 info->edid_hdmi_dc_modes |= DRM_EDID_HDMI_DC_48;
3743 DRM_DEBUG("%s: HDMI sink does deep color 48.\n",
3744 connector->name);
3745 }
3746
3747 if (dc_bpc > 0) {
3748 DRM_DEBUG("%s: Assigning HDMI sink color depth as %d bpc.\n",
3749 connector->name, dc_bpc);
3750 info->bpc = dc_bpc;
3751
3752 /*
3753 * Deep color support mandates RGB444 support for all video
3754 * modes and forbids YCRCB422 support for all video modes per
3755 * HDMI 1.3 spec.
3756 */
3757 info->color_formats = DRM_COLOR_FORMAT_RGB444;
3758
3759 /* YCRCB444 is optional according to spec. */
3760 if (hdmi[6] & DRM_EDID_HDMI_DC_Y444) {
3761 info->color_formats |= DRM_COLOR_FORMAT_YCRCB444;
3762 DRM_DEBUG("%s: HDMI sink does YCRCB444 in deep color.\n",
3763 connector->name);
3764 }
3765
3766 /*
3767 * Spec says that if any deep color mode is supported at all,
3768 * then deep color 36 bit must be supported.
3769 */
3770 if (!(hdmi[6] & DRM_EDID_HDMI_DC_36)) {
3771 DRM_DEBUG("%s: HDMI sink should do DC_36, but does not!\n",
3772 connector->name);
3773 }
3774
3775 return true;
3776 }
3777 else {
3778 DRM_DEBUG("%s: No deep color support on this HDMI sink.\n",
3779 connector->name);
3780 }
3781 }
3782 }
3783
3784 return false;
3785}
3786
3787/**
3788 * drm_add_display_info - pull display info out if present
3789 * @edid: EDID data
3790 * @info: display info (attached to connector)
3791 * @connector: connector whose edid is used to build display info
3792 *
3793 * Grab any available display info and stuff it into the drm_display_info
3794 * structure that's part of the connector. Useful for tracking bpp and
3795 * color spaces.
3796 */
3797static void drm_add_display_info(struct edid *edid,
3798 struct drm_display_info *info,
3799 struct drm_connector *connector)
3800{
3801 u8 *edid_ext;
3802
3803 info->width_mm = edid->width_cm * 10;
3804 info->height_mm = edid->height_cm * 10;
3805
3806 /* driver figures it out in this case */
3807 info->bpc = 0;
3808 info->color_formats = 0;
3809
3810 if (edid->revision < 3)
3811 return;
3812
3813 if (!(edid->input & DRM_EDID_INPUT_DIGITAL))
3814 return;
3815
3816 /* Get data from CEA blocks if present */
3817 edid_ext = drm_find_cea_extension(edid);
3818 if (edid_ext) {
3819 info->cea_rev = edid_ext[1];
3820
3821 /* The existence of a CEA block should imply RGB support */
3822 info->color_formats = DRM_COLOR_FORMAT_RGB444;
3823 if (edid_ext[3] & EDID_CEA_YCRCB444)
3824 info->color_formats |= DRM_COLOR_FORMAT_YCRCB444;
3825 if (edid_ext[3] & EDID_CEA_YCRCB422)
3826 info->color_formats |= DRM_COLOR_FORMAT_YCRCB422;
3827 }
3828
3829 /* HDMI deep color modes supported? Assign to info, if so */
3830 drm_assign_hdmi_deep_color_info(edid, info, connector);
3831
3832 /* Only defined for 1.4 with digital displays */
3833 if (edid->revision < 4)
3834 return;
3835
3836 switch (edid->input & DRM_EDID_DIGITAL_DEPTH_MASK) {
3837 case DRM_EDID_DIGITAL_DEPTH_6:
3838 info->bpc = 6;
3839 break;
3840 case DRM_EDID_DIGITAL_DEPTH_8:
3841 info->bpc = 8;
3842 break;
3843 case DRM_EDID_DIGITAL_DEPTH_10:
3844 info->bpc = 10;
3845 break;
3846 case DRM_EDID_DIGITAL_DEPTH_12:
3847 info->bpc = 12;
3848 break;
3849 case DRM_EDID_DIGITAL_DEPTH_14:
3850 info->bpc = 14;
3851 break;
3852 case DRM_EDID_DIGITAL_DEPTH_16:
3853 info->bpc = 16;
3854 break;
3855 case DRM_EDID_DIGITAL_DEPTH_UNDEF:
3856 default:
3857 info->bpc = 0;
3858 break;
3859 }
3860
3861 DRM_DEBUG("%s: Assigning EDID-1.4 digital sink color depth as %d bpc.\n",
3862 connector->name, info->bpc);
3863
3864 info->color_formats |= DRM_COLOR_FORMAT_RGB444;
3865 if (edid->features & DRM_EDID_FEATURE_RGB_YCRCB444)
3866 info->color_formats |= DRM_COLOR_FORMAT_YCRCB444;
3867 if (edid->features & DRM_EDID_FEATURE_RGB_YCRCB422)
3868 info->color_formats |= DRM_COLOR_FORMAT_YCRCB422;
3869}
3870
3871/**
3872 * drm_add_edid_modes - add modes from EDID data, if available
3873 * @connector: connector we're probing
3874 * @edid: EDID data
3875 *
3876 * Add the specified modes to the connector's mode list.
3877 *
3878 * Return: The number of modes added or 0 if we couldn't find any.
3879 */
3880int drm_add_edid_modes(struct drm_connector *connector, struct edid *edid)
3881{
3882 int num_modes = 0;
3883 u32 quirks;
3884
3885 if (edid == NULL) {
3886 return 0;
3887 }
3888 if (!drm_edid_is_valid(edid)) {
3889 dev_warn(connector->dev->dev, "%s: EDID invalid.\n",
3890 connector->name);
3891 return 0;
3892 }
3893
3894 quirks = edid_get_quirks(edid);
3895
3896 /*
3897 * EDID spec says modes should be preferred in this order:
3898 * - preferred detailed mode
3899 * - other detailed modes from base block
3900 * - detailed modes from extension blocks
3901 * - CVT 3-byte code modes
3902 * - standard timing codes
3903 * - established timing codes
3904 * - modes inferred from GTF or CVT range information
3905 *
3906 * We get this pretty much right.
3907 *
3908 * XXX order for additional mode types in extension blocks?
3909 */
3910 num_modes += add_detailed_modes(connector, edid, quirks);
3911 num_modes += add_cvt_modes(connector, edid);
3912 num_modes += add_standard_modes(connector, edid);
3913 num_modes += add_established_modes(connector, edid);
3914 num_modes += add_cea_modes(connector, edid);
3915 num_modes += add_alternate_cea_modes(connector, edid);
3916 if (edid->features & DRM_EDID_FEATURE_DEFAULT_GTF)
3917 num_modes += add_inferred_modes(connector, edid);
3918
3919 if (quirks & (EDID_QUIRK_PREFER_LARGE_60 | EDID_QUIRK_PREFER_LARGE_75))
3920 edid_fixup_preferred(connector, quirks);
3921
3922 drm_add_display_info(edid, &connector->display_info, connector);
3923
3924 if (quirks & EDID_QUIRK_FORCE_8BPC)
3925 connector->display_info.bpc = 8;
3926
3927 if (quirks & EDID_QUIRK_FORCE_12BPC)
3928 connector->display_info.bpc = 12;
3929
3930 return num_modes;
3931}
3932EXPORT_SYMBOL(drm_add_edid_modes);
3933
3934/**
3935 * drm_add_modes_noedid - add modes for the connectors without EDID
3936 * @connector: connector we're probing
3937 * @hdisplay: the horizontal display limit
3938 * @vdisplay: the vertical display limit
3939 *
3940 * Add the specified modes to the connector's mode list. Only when the
3941 * hdisplay/vdisplay is not beyond the given limit, it will be added.
3942 *
3943 * Return: The number of modes added or 0 if we couldn't find any.
3944 */
3945int drm_add_modes_noedid(struct drm_connector *connector,
3946 int hdisplay, int vdisplay)
3947{
3948 int i, count, num_modes = 0;
3949 struct drm_display_mode *mode;
3950 struct drm_device *dev = connector->dev;
3951
3952 count = ARRAY_SIZE(drm_dmt_modes);
3953 if (hdisplay < 0)
3954 hdisplay = 0;
3955 if (vdisplay < 0)
3956 vdisplay = 0;
3957
3958 for (i = 0; i < count; i++) {
3959 const struct drm_display_mode *ptr = &drm_dmt_modes[i];
3960 if (hdisplay && vdisplay) {
3961 /*
3962 * Only when two are valid, they will be used to check
3963 * whether the mode should be added to the mode list of
3964 * the connector.
3965 */
3966 if (ptr->hdisplay > hdisplay ||
3967 ptr->vdisplay > vdisplay)
3968 continue;
3969 }
3970 if (drm_mode_vrefresh(ptr) > 61)
3971 continue;
3972 mode = drm_mode_duplicate(dev, ptr);
3973 if (mode) {
3974 drm_mode_probed_add(connector, mode);
3975 num_modes++;
3976 }
3977 }
3978 return num_modes;
3979}
3980EXPORT_SYMBOL(drm_add_modes_noedid);
3981
3982/**
3983 * drm_set_preferred_mode - Sets the preferred mode of a connector
3984 * @connector: connector whose mode list should be processed
3985 * @hpref: horizontal resolution of preferred mode
3986 * @vpref: vertical resolution of preferred mode
3987 *
3988 * Marks a mode as preferred if it matches the resolution specified by @hpref
3989 * and @vpref.
3990 */
3991void drm_set_preferred_mode(struct drm_connector *connector,
3992 int hpref, int vpref)
3993{
3994 struct drm_display_mode *mode;
3995
3996 list_for_each_entry(mode, &connector->probed_modes, head) {
3997 if (mode->hdisplay == hpref &&
3998 mode->vdisplay == vpref)
3999 mode->type |= DRM_MODE_TYPE_PREFERRED;
4000 }
4001}
4002EXPORT_SYMBOL(drm_set_preferred_mode);
4003
4004/**
4005 * drm_hdmi_avi_infoframe_from_display_mode() - fill an HDMI AVI infoframe with
4006 * data from a DRM display mode
4007 * @frame: HDMI AVI infoframe
4008 * @mode: DRM display mode
4009 *
4010 * Return: 0 on success or a negative error code on failure.
4011 */
4012int
4013drm_hdmi_avi_infoframe_from_display_mode(struct hdmi_avi_infoframe *frame,
4014 const struct drm_display_mode *mode)
4015{
4016 int err;
4017
4018 if (!frame || !mode)
4019 return -EINVAL;
4020
4021 err = hdmi_avi_infoframe_init(frame);
4022 if (err < 0)
4023 return err;
4024
4025 if (mode->flags & DRM_MODE_FLAG_DBLCLK)
4026 frame->pixel_repeat = 1;
4027
4028 frame->video_code = drm_match_cea_mode(mode);
4029
4030 frame->picture_aspect = HDMI_PICTURE_ASPECT_NONE;
4031
4032 /*
4033 * Populate picture aspect ratio from either
4034 * user input (if specified) or from the CEA mode list.
4035 */
4036 if (mode->picture_aspect_ratio == HDMI_PICTURE_ASPECT_4_3 ||
4037 mode->picture_aspect_ratio == HDMI_PICTURE_ASPECT_16_9)
4038 frame->picture_aspect = mode->picture_aspect_ratio;
4039 else if (frame->video_code > 0)
4040 frame->picture_aspect = drm_get_cea_aspect_ratio(
4041 frame->video_code);
4042
4043 frame->active_aspect = HDMI_ACTIVE_ASPECT_PICTURE;
4044 frame->scan_mode = HDMI_SCAN_MODE_UNDERSCAN;
4045
4046 return 0;
4047}
4048EXPORT_SYMBOL(drm_hdmi_avi_infoframe_from_display_mode);
4049
4050static enum hdmi_3d_structure
4051s3d_structure_from_display_mode(const struct drm_display_mode *mode)
4052{
4053 u32 layout = mode->flags & DRM_MODE_FLAG_3D_MASK;
4054
4055 switch (layout) {
4056 case DRM_MODE_FLAG_3D_FRAME_PACKING:
4057 return HDMI_3D_STRUCTURE_FRAME_PACKING;
4058 case DRM_MODE_FLAG_3D_FIELD_ALTERNATIVE:
4059 return HDMI_3D_STRUCTURE_FIELD_ALTERNATIVE;
4060 case DRM_MODE_FLAG_3D_LINE_ALTERNATIVE:
4061 return HDMI_3D_STRUCTURE_LINE_ALTERNATIVE;
4062 case DRM_MODE_FLAG_3D_SIDE_BY_SIDE_FULL:
4063 return HDMI_3D_STRUCTURE_SIDE_BY_SIDE_FULL;
4064 case DRM_MODE_FLAG_3D_L_DEPTH:
4065 return HDMI_3D_STRUCTURE_L_DEPTH;
4066 case DRM_MODE_FLAG_3D_L_DEPTH_GFX_GFX_DEPTH:
4067 return HDMI_3D_STRUCTURE_L_DEPTH_GFX_GFX_DEPTH;
4068 case DRM_MODE_FLAG_3D_TOP_AND_BOTTOM:
4069 return HDMI_3D_STRUCTURE_TOP_AND_BOTTOM;
4070 case DRM_MODE_FLAG_3D_SIDE_BY_SIDE_HALF:
4071 return HDMI_3D_STRUCTURE_SIDE_BY_SIDE_HALF;
4072 default:
4073 return HDMI_3D_STRUCTURE_INVALID;
4074 }
4075}
4076
4077/**
4078 * drm_hdmi_vendor_infoframe_from_display_mode() - fill an HDMI infoframe with
4079 * data from a DRM display mode
4080 * @frame: HDMI vendor infoframe
4081 * @mode: DRM display mode
4082 *
4083 * Note that there's is a need to send HDMI vendor infoframes only when using a
4084 * 4k or stereoscopic 3D mode. So when giving any other mode as input this
4085 * function will return -EINVAL, error that can be safely ignored.
4086 *
4087 * Return: 0 on success or a negative error code on failure.
4088 */
4089int
4090drm_hdmi_vendor_infoframe_from_display_mode(struct hdmi_vendor_infoframe *frame,
4091 const struct drm_display_mode *mode)
4092{
4093 int err;
4094 u32 s3d_flags;
4095 u8 vic;
4096
4097 if (!frame || !mode)
4098 return -EINVAL;
4099
4100 vic = drm_match_hdmi_mode(mode);
4101 s3d_flags = mode->flags & DRM_MODE_FLAG_3D_MASK;
4102
4103 if (!vic && !s3d_flags)
4104 return -EINVAL;
4105
4106 if (vic && s3d_flags)
4107 return -EINVAL;
4108
4109 err = hdmi_vendor_infoframe_init(frame);
4110 if (err < 0)
4111 return err;
4112
4113 if (vic)
4114 frame->vic = vic;
4115 else
4116 frame->s3d_struct = s3d_structure_from_display_mode(mode);
4117
4118 return 0;
4119}
4120EXPORT_SYMBOL(drm_hdmi_vendor_infoframe_from_display_mode);
4121
4122static int drm_parse_display_id(struct drm_connector *connector,
4123 u8 *displayid, int length,
4124 bool is_edid_extension)
4125{
4126 /* if this is an EDID extension the first byte will be 0x70 */
4127 int idx = 0;
4128 struct displayid_hdr *base;
4129 struct displayid_block *block;
4130 u8 csum = 0;
4131 int i;
4132
4133 if (is_edid_extension)
4134 idx = 1;
4135
4136 base = (struct displayid_hdr *)&displayid[idx];
4137
4138 DRM_DEBUG_KMS("base revision 0x%x, length %d, %d %d\n",
4139 base->rev, base->bytes, base->prod_id, base->ext_count);
4140
4141 if (base->bytes + 5 > length - idx)
4142 return -EINVAL;
4143
4144 for (i = idx; i <= base->bytes + 5; i++) {
4145 csum += displayid[i];
4146 }
4147 if (csum) {
4148 DRM_ERROR("DisplayID checksum invalid, remainder is %d\n", csum);
4149 return -EINVAL;
4150 }
4151
4152 block = (struct displayid_block *)&displayid[idx + 4];
4153 DRM_DEBUG_KMS("block id %d, rev %d, len %d\n",
4154 block->tag, block->rev, block->num_bytes);
4155
4156 switch (block->tag) {
4157 case DATA_BLOCK_TILED_DISPLAY: {
4158 struct displayid_tiled_block *tile = (struct displayid_tiled_block *)block;
4159
4160 u16 w, h;
4161 u8 tile_v_loc, tile_h_loc;
4162 u8 num_v_tile, num_h_tile;
4163 struct drm_tile_group *tg;
4164
4165 w = tile->tile_size[0] | tile->tile_size[1] << 8;
4166 h = tile->tile_size[2] | tile->tile_size[3] << 8;
4167
4168 num_v_tile = (tile->topo[0] & 0xf) | (tile->topo[2] & 0x30);
4169 num_h_tile = (tile->topo[0] >> 4) | ((tile->topo[2] >> 2) & 0x30);
4170 tile_v_loc = (tile->topo[1] & 0xf) | ((tile->topo[2] & 0x3) << 4);
4171 tile_h_loc = (tile->topo[1] >> 4) | (((tile->topo[2] >> 2) & 0x3) << 4);
4172
4173 connector->has_tile = true;
4174 if (tile->tile_cap & 0x80)
4175 connector->tile_is_single_monitor = true;
4176
4177 connector->num_h_tile = num_h_tile + 1;
4178 connector->num_v_tile = num_v_tile + 1;
4179 connector->tile_h_loc = tile_h_loc;
4180 connector->tile_v_loc = tile_v_loc;
4181 connector->tile_h_size = w + 1;
4182 connector->tile_v_size = h + 1;
4183
4184 DRM_DEBUG_KMS("tile cap 0x%x\n", tile->tile_cap);
4185 DRM_DEBUG_KMS("tile_size %d x %d\n", w + 1, h + 1);
4186 DRM_DEBUG_KMS("topo num tiles %dx%d, location %dx%d\n",
4187 num_h_tile + 1, num_v_tile + 1, tile_h_loc, tile_v_loc);
4188 DRM_DEBUG_KMS("vend %c%c%c\n", tile->topology_id[0], tile->topology_id[1], tile->topology_id[2]);
4189
4190 tg = drm_mode_get_tile_group(connector->dev, tile->topology_id);
4191 if (!tg) {
4192 tg = drm_mode_create_tile_group(connector->dev, tile->topology_id);
4193 }
4194 if (!tg)
4195 return -ENOMEM;
4196
4197 if (connector->tile_group != tg) {
4198 /* if we haven't got a pointer,
4199 take the reference, drop ref to old tile group */
4200 if (connector->tile_group) {
4201 drm_mode_put_tile_group(connector->dev, connector->tile_group);
4202 }
4203 connector->tile_group = tg;
4204 } else
4205 /* if same tile group, then release the ref we just took. */
4206 drm_mode_put_tile_group(connector->dev, tg);
4207 }
4208 break;
4209 default:
4210 printk("unknown displayid tag %d\n", block->tag);
4211 break;
4212 }
4213 return 0;
4214}
4215
4216static void drm_get_displayid(struct drm_connector *connector,
4217 struct edid *edid)
4218{
4219 void *displayid = NULL;
4220 int ret;
4221 connector->has_tile = false;
4222 displayid = drm_find_displayid_extension(edid);
4223 if (!displayid) {
4224 /* drop reference to any tile group we had */
4225 goto out_drop_ref;
4226 }
4227
4228 ret = drm_parse_display_id(connector, displayid, EDID_LENGTH, true);
4229 if (ret < 0)
4230 goto out_drop_ref;
4231 if (!connector->has_tile)
4232 goto out_drop_ref;
4233 return;
4234out_drop_ref:
4235 if (connector->tile_group) {
4236 drm_mode_put_tile_group(connector->dev, connector->tile_group);
4237 connector->tile_group = NULL;
4238 }
4239 return;
4240}
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/i2c.h>
33#include "drmP.h"
34#include "drm_edid.h"
35#include "drm_edid_modes.h"
36
37#define version_greater(edid, maj, min) \
38 (((edid)->version > (maj)) || \
39 ((edid)->version == (maj) && (edid)->revision > (min)))
40
41#define EDID_EST_TIMINGS 16
42#define EDID_STD_TIMINGS 8
43#define EDID_DETAILED_TIMINGS 4
44
45/*
46 * EDID blocks out in the wild have a variety of bugs, try to collect
47 * them here (note that userspace may work around broken monitors first,
48 * but fixes should make their way here so that the kernel "just works"
49 * on as many displays as possible).
50 */
51
52/* First detailed mode wrong, use largest 60Hz mode */
53#define EDID_QUIRK_PREFER_LARGE_60 (1 << 0)
54/* Reported 135MHz pixel clock is too high, needs adjustment */
55#define EDID_QUIRK_135_CLOCK_TOO_HIGH (1 << 1)
56/* Prefer the largest mode at 75 Hz */
57#define EDID_QUIRK_PREFER_LARGE_75 (1 << 2)
58/* Detail timing is in cm not mm */
59#define EDID_QUIRK_DETAILED_IN_CM (1 << 3)
60/* Detailed timing descriptors have bogus size values, so just take the
61 * maximum size and use that.
62 */
63#define EDID_QUIRK_DETAILED_USE_MAXIMUM_SIZE (1 << 4)
64/* Monitor forgot to set the first detailed is preferred bit. */
65#define EDID_QUIRK_FIRST_DETAILED_PREFERRED (1 << 5)
66/* use +hsync +vsync for detailed mode */
67#define EDID_QUIRK_DETAILED_SYNC_PP (1 << 6)
68
69struct detailed_mode_closure {
70 struct drm_connector *connector;
71 struct edid *edid;
72 bool preferred;
73 u32 quirks;
74 int modes;
75};
76
77#define LEVEL_DMT 0
78#define LEVEL_GTF 1
79#define LEVEL_GTF2 2
80#define LEVEL_CVT 3
81
82static struct edid_quirk {
83 char *vendor;
84 int product_id;
85 u32 quirks;
86} edid_quirk_list[] = {
87 /* Acer AL1706 */
88 { "ACR", 44358, EDID_QUIRK_PREFER_LARGE_60 },
89 /* Acer F51 */
90 { "API", 0x7602, EDID_QUIRK_PREFER_LARGE_60 },
91 /* Unknown Acer */
92 { "ACR", 2423, EDID_QUIRK_FIRST_DETAILED_PREFERRED },
93
94 /* Belinea 10 15 55 */
95 { "MAX", 1516, EDID_QUIRK_PREFER_LARGE_60 },
96 { "MAX", 0x77e, EDID_QUIRK_PREFER_LARGE_60 },
97
98 /* Envision Peripherals, Inc. EN-7100e */
99 { "EPI", 59264, EDID_QUIRK_135_CLOCK_TOO_HIGH },
100 /* Envision EN2028 */
101 { "EPI", 8232, EDID_QUIRK_PREFER_LARGE_60 },
102
103 /* Funai Electronics PM36B */
104 { "FCM", 13600, EDID_QUIRK_PREFER_LARGE_75 |
105 EDID_QUIRK_DETAILED_IN_CM },
106
107 /* LG Philips LCD LP154W01-A5 */
108 { "LPL", 0, EDID_QUIRK_DETAILED_USE_MAXIMUM_SIZE },
109 { "LPL", 0x2a00, EDID_QUIRK_DETAILED_USE_MAXIMUM_SIZE },
110
111 /* Philips 107p5 CRT */
112 { "PHL", 57364, EDID_QUIRK_FIRST_DETAILED_PREFERRED },
113
114 /* Proview AY765C */
115 { "PTS", 765, EDID_QUIRK_FIRST_DETAILED_PREFERRED },
116
117 /* Samsung SyncMaster 205BW. Note: irony */
118 { "SAM", 541, EDID_QUIRK_DETAILED_SYNC_PP },
119 /* Samsung SyncMaster 22[5-6]BW */
120 { "SAM", 596, EDID_QUIRK_PREFER_LARGE_60 },
121 { "SAM", 638, EDID_QUIRK_PREFER_LARGE_60 },
122};
123
124/*** DDC fetch and block validation ***/
125
126static const u8 edid_header[] = {
127 0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00
128};
129
130 /*
131 * Sanity check the header of the base EDID block. Return 8 if the header
132 * is perfect, down to 0 if it's totally wrong.
133 */
134int drm_edid_header_is_valid(const u8 *raw_edid)
135{
136 int i, score = 0;
137
138 for (i = 0; i < sizeof(edid_header); i++)
139 if (raw_edid[i] == edid_header[i])
140 score++;
141
142 return score;
143}
144EXPORT_SYMBOL(drm_edid_header_is_valid);
145
146
147/*
148 * Sanity check the EDID block (base or extension). Return 0 if the block
149 * doesn't check out, or 1 if it's valid.
150 */
151static bool
152drm_edid_block_valid(u8 *raw_edid)
153{
154 int i;
155 u8 csum = 0;
156 struct edid *edid = (struct edid *)raw_edid;
157
158 if (raw_edid[0] == 0x00) {
159 int score = drm_edid_header_is_valid(raw_edid);
160 if (score == 8) ;
161 else if (score >= 6) {
162 DRM_DEBUG("Fixing EDID header, your hardware may be failing\n");
163 memcpy(raw_edid, edid_header, sizeof(edid_header));
164 } else {
165 goto bad;
166 }
167 }
168
169 for (i = 0; i < EDID_LENGTH; i++)
170 csum += raw_edid[i];
171 if (csum) {
172 DRM_ERROR("EDID checksum is invalid, remainder is %d\n", csum);
173
174 /* allow CEA to slide through, switches mangle this */
175 if (raw_edid[0] != 0x02)
176 goto bad;
177 }
178
179 /* per-block-type checks */
180 switch (raw_edid[0]) {
181 case 0: /* base */
182 if (edid->version != 1) {
183 DRM_ERROR("EDID has major version %d, instead of 1\n", edid->version);
184 goto bad;
185 }
186
187 if (edid->revision > 4)
188 DRM_DEBUG("EDID minor > 4, assuming backward compatibility\n");
189 break;
190
191 default:
192 break;
193 }
194
195 return 1;
196
197bad:
198 if (raw_edid) {
199 printk(KERN_ERR "Raw EDID:\n");
200 print_hex_dump(KERN_ERR, " \t", DUMP_PREFIX_NONE, 16, 1,
201 raw_edid, EDID_LENGTH, false);
202 }
203 return 0;
204}
205
206/**
207 * drm_edid_is_valid - sanity check EDID data
208 * @edid: EDID data
209 *
210 * Sanity-check an entire EDID record (including extensions)
211 */
212bool drm_edid_is_valid(struct edid *edid)
213{
214 int i;
215 u8 *raw = (u8 *)edid;
216
217 if (!edid)
218 return false;
219
220 for (i = 0; i <= edid->extensions; i++)
221 if (!drm_edid_block_valid(raw + i * EDID_LENGTH))
222 return false;
223
224 return true;
225}
226EXPORT_SYMBOL(drm_edid_is_valid);
227
228#define DDC_ADDR 0x50
229#define DDC_SEGMENT_ADDR 0x30
230/**
231 * Get EDID information via I2C.
232 *
233 * \param adapter : i2c device adaptor
234 * \param buf : EDID data buffer to be filled
235 * \param len : EDID data buffer length
236 * \return 0 on success or -1 on failure.
237 *
238 * Try to fetch EDID information by calling i2c driver function.
239 */
240static int
241drm_do_probe_ddc_edid(struct i2c_adapter *adapter, unsigned char *buf,
242 int block, int len)
243{
244 unsigned char start = block * EDID_LENGTH;
245 int ret, retries = 5;
246
247 /* The core i2c driver will automatically retry the transfer if the
248 * adapter reports EAGAIN. However, we find that bit-banging transfers
249 * are susceptible to errors under a heavily loaded machine and
250 * generate spurious NAKs and timeouts. Retrying the transfer
251 * of the individual block a few times seems to overcome this.
252 */
253 do {
254 struct i2c_msg msgs[] = {
255 {
256 .addr = DDC_ADDR,
257 .flags = 0,
258 .len = 1,
259 .buf = &start,
260 }, {
261 .addr = DDC_ADDR,
262 .flags = I2C_M_RD,
263 .len = len,
264 .buf = buf,
265 }
266 };
267 ret = i2c_transfer(adapter, msgs, 2);
268 } while (ret != 2 && --retries);
269
270 return ret == 2 ? 0 : -1;
271}
272
273static bool drm_edid_is_zero(u8 *in_edid, int length)
274{
275 int i;
276 u32 *raw_edid = (u32 *)in_edid;
277
278 for (i = 0; i < length / 4; i++)
279 if (*(raw_edid + i) != 0)
280 return false;
281 return true;
282}
283
284static u8 *
285drm_do_get_edid(struct drm_connector *connector, struct i2c_adapter *adapter)
286{
287 int i, j = 0, valid_extensions = 0;
288 u8 *block, *new;
289
290 if ((block = kmalloc(EDID_LENGTH, GFP_KERNEL)) == NULL)
291 return NULL;
292
293 /* base block fetch */
294 for (i = 0; i < 4; i++) {
295 if (drm_do_probe_ddc_edid(adapter, block, 0, EDID_LENGTH))
296 goto out;
297 if (drm_edid_block_valid(block))
298 break;
299 if (i == 0 && drm_edid_is_zero(block, EDID_LENGTH)) {
300 connector->null_edid_counter++;
301 goto carp;
302 }
303 }
304 if (i == 4)
305 goto carp;
306
307 /* if there's no extensions, we're done */
308 if (block[0x7e] == 0)
309 return block;
310
311 new = krealloc(block, (block[0x7e] + 1) * EDID_LENGTH, GFP_KERNEL);
312 if (!new)
313 goto out;
314 block = new;
315
316 for (j = 1; j <= block[0x7e]; j++) {
317 for (i = 0; i < 4; i++) {
318 if (drm_do_probe_ddc_edid(adapter,
319 block + (valid_extensions + 1) * EDID_LENGTH,
320 j, EDID_LENGTH))
321 goto out;
322 if (drm_edid_block_valid(block + (valid_extensions + 1) * EDID_LENGTH)) {
323 valid_extensions++;
324 break;
325 }
326 }
327 if (i == 4)
328 dev_warn(connector->dev->dev,
329 "%s: Ignoring invalid EDID block %d.\n",
330 drm_get_connector_name(connector), j);
331 }
332
333 if (valid_extensions != block[0x7e]) {
334 block[EDID_LENGTH-1] += block[0x7e] - valid_extensions;
335 block[0x7e] = valid_extensions;
336 new = krealloc(block, (valid_extensions + 1) * EDID_LENGTH, GFP_KERNEL);
337 if (!new)
338 goto out;
339 block = new;
340 }
341
342 return block;
343
344carp:
345 dev_warn(connector->dev->dev, "%s: EDID block %d invalid.\n",
346 drm_get_connector_name(connector), j);
347
348out:
349 kfree(block);
350 return NULL;
351}
352
353/**
354 * Probe DDC presence.
355 *
356 * \param adapter : i2c device adaptor
357 * \return 1 on success
358 */
359static bool
360drm_probe_ddc(struct i2c_adapter *adapter)
361{
362 unsigned char out;
363
364 return (drm_do_probe_ddc_edid(adapter, &out, 0, 1) == 0);
365}
366
367/**
368 * drm_get_edid - get EDID data, if available
369 * @connector: connector we're probing
370 * @adapter: i2c adapter to use for DDC
371 *
372 * Poke the given i2c channel to grab EDID data if possible. If found,
373 * attach it to the connector.
374 *
375 * Return edid data or NULL if we couldn't find any.
376 */
377struct edid *drm_get_edid(struct drm_connector *connector,
378 struct i2c_adapter *adapter)
379{
380 struct edid *edid = NULL;
381
382 if (drm_probe_ddc(adapter))
383 edid = (struct edid *)drm_do_get_edid(connector, adapter);
384
385 connector->display_info.raw_edid = (char *)edid;
386
387 return edid;
388
389}
390EXPORT_SYMBOL(drm_get_edid);
391
392/*** EDID parsing ***/
393
394/**
395 * edid_vendor - match a string against EDID's obfuscated vendor field
396 * @edid: EDID to match
397 * @vendor: vendor string
398 *
399 * Returns true if @vendor is in @edid, false otherwise
400 */
401static bool edid_vendor(struct edid *edid, char *vendor)
402{
403 char edid_vendor[3];
404
405 edid_vendor[0] = ((edid->mfg_id[0] & 0x7c) >> 2) + '@';
406 edid_vendor[1] = (((edid->mfg_id[0] & 0x3) << 3) |
407 ((edid->mfg_id[1] & 0xe0) >> 5)) + '@';
408 edid_vendor[2] = (edid->mfg_id[1] & 0x1f) + '@';
409
410 return !strncmp(edid_vendor, vendor, 3);
411}
412
413/**
414 * edid_get_quirks - return quirk flags for a given EDID
415 * @edid: EDID to process
416 *
417 * This tells subsequent routines what fixes they need to apply.
418 */
419static u32 edid_get_quirks(struct edid *edid)
420{
421 struct edid_quirk *quirk;
422 int i;
423
424 for (i = 0; i < ARRAY_SIZE(edid_quirk_list); i++) {
425 quirk = &edid_quirk_list[i];
426
427 if (edid_vendor(edid, quirk->vendor) &&
428 (EDID_PRODUCT_ID(edid) == quirk->product_id))
429 return quirk->quirks;
430 }
431
432 return 0;
433}
434
435#define MODE_SIZE(m) ((m)->hdisplay * (m)->vdisplay)
436#define MODE_REFRESH_DIFF(m,r) (abs((m)->vrefresh - target_refresh))
437
438/**
439 * edid_fixup_preferred - set preferred modes based on quirk list
440 * @connector: has mode list to fix up
441 * @quirks: quirks list
442 *
443 * Walk the mode list for @connector, clearing the preferred status
444 * on existing modes and setting it anew for the right mode ala @quirks.
445 */
446static void edid_fixup_preferred(struct drm_connector *connector,
447 u32 quirks)
448{
449 struct drm_display_mode *t, *cur_mode, *preferred_mode;
450 int target_refresh = 0;
451
452 if (list_empty(&connector->probed_modes))
453 return;
454
455 if (quirks & EDID_QUIRK_PREFER_LARGE_60)
456 target_refresh = 60;
457 if (quirks & EDID_QUIRK_PREFER_LARGE_75)
458 target_refresh = 75;
459
460 preferred_mode = list_first_entry(&connector->probed_modes,
461 struct drm_display_mode, head);
462
463 list_for_each_entry_safe(cur_mode, t, &connector->probed_modes, head) {
464 cur_mode->type &= ~DRM_MODE_TYPE_PREFERRED;
465
466 if (cur_mode == preferred_mode)
467 continue;
468
469 /* Largest mode is preferred */
470 if (MODE_SIZE(cur_mode) > MODE_SIZE(preferred_mode))
471 preferred_mode = cur_mode;
472
473 /* At a given size, try to get closest to target refresh */
474 if ((MODE_SIZE(cur_mode) == MODE_SIZE(preferred_mode)) &&
475 MODE_REFRESH_DIFF(cur_mode, target_refresh) <
476 MODE_REFRESH_DIFF(preferred_mode, target_refresh)) {
477 preferred_mode = cur_mode;
478 }
479 }
480
481 preferred_mode->type |= DRM_MODE_TYPE_PREFERRED;
482}
483
484struct drm_display_mode *drm_mode_find_dmt(struct drm_device *dev,
485 int hsize, int vsize, int fresh)
486{
487 struct drm_display_mode *mode = NULL;
488 int i;
489
490 for (i = 0; i < drm_num_dmt_modes; i++) {
491 const struct drm_display_mode *ptr = &drm_dmt_modes[i];
492 if (hsize == ptr->hdisplay &&
493 vsize == ptr->vdisplay &&
494 fresh == drm_mode_vrefresh(ptr)) {
495 /* get the expected default mode */
496 mode = drm_mode_duplicate(dev, ptr);
497 break;
498 }
499 }
500 return mode;
501}
502EXPORT_SYMBOL(drm_mode_find_dmt);
503
504typedef void detailed_cb(struct detailed_timing *timing, void *closure);
505
506static void
507cea_for_each_detailed_block(u8 *ext, detailed_cb *cb, void *closure)
508{
509 int i, n = 0;
510 u8 rev = ext[0x01], d = ext[0x02];
511 u8 *det_base = ext + d;
512
513 switch (rev) {
514 case 0:
515 /* can't happen */
516 return;
517 case 1:
518 /* have to infer how many blocks we have, check pixel clock */
519 for (i = 0; i < 6; i++)
520 if (det_base[18*i] || det_base[18*i+1])
521 n++;
522 break;
523 default:
524 /* explicit count */
525 n = min(ext[0x03] & 0x0f, 6);
526 break;
527 }
528
529 for (i = 0; i < n; i++)
530 cb((struct detailed_timing *)(det_base + 18 * i), closure);
531}
532
533static void
534vtb_for_each_detailed_block(u8 *ext, detailed_cb *cb, void *closure)
535{
536 unsigned int i, n = min((int)ext[0x02], 6);
537 u8 *det_base = ext + 5;
538
539 if (ext[0x01] != 1)
540 return; /* unknown version */
541
542 for (i = 0; i < n; i++)
543 cb((struct detailed_timing *)(det_base + 18 * i), closure);
544}
545
546static void
547drm_for_each_detailed_block(u8 *raw_edid, detailed_cb *cb, void *closure)
548{
549 int i;
550 struct edid *edid = (struct edid *)raw_edid;
551
552 if (edid == NULL)
553 return;
554
555 for (i = 0; i < EDID_DETAILED_TIMINGS; i++)
556 cb(&(edid->detailed_timings[i]), closure);
557
558 for (i = 1; i <= raw_edid[0x7e]; i++) {
559 u8 *ext = raw_edid + (i * EDID_LENGTH);
560 switch (*ext) {
561 case CEA_EXT:
562 cea_for_each_detailed_block(ext, cb, closure);
563 break;
564 case VTB_EXT:
565 vtb_for_each_detailed_block(ext, cb, closure);
566 break;
567 default:
568 break;
569 }
570 }
571}
572
573static void
574is_rb(struct detailed_timing *t, void *data)
575{
576 u8 *r = (u8 *)t;
577 if (r[3] == EDID_DETAIL_MONITOR_RANGE)
578 if (r[15] & 0x10)
579 *(bool *)data = true;
580}
581
582/* EDID 1.4 defines this explicitly. For EDID 1.3, we guess, badly. */
583static bool
584drm_monitor_supports_rb(struct edid *edid)
585{
586 if (edid->revision >= 4) {
587 bool ret;
588 drm_for_each_detailed_block((u8 *)edid, is_rb, &ret);
589 return ret;
590 }
591
592 return ((edid->input & DRM_EDID_INPUT_DIGITAL) != 0);
593}
594
595static void
596find_gtf2(struct detailed_timing *t, void *data)
597{
598 u8 *r = (u8 *)t;
599 if (r[3] == EDID_DETAIL_MONITOR_RANGE && r[10] == 0x02)
600 *(u8 **)data = r;
601}
602
603/* Secondary GTF curve kicks in above some break frequency */
604static int
605drm_gtf2_hbreak(struct edid *edid)
606{
607 u8 *r = NULL;
608 drm_for_each_detailed_block((u8 *)edid, find_gtf2, &r);
609 return r ? (r[12] * 2) : 0;
610}
611
612static int
613drm_gtf2_2c(struct edid *edid)
614{
615 u8 *r = NULL;
616 drm_for_each_detailed_block((u8 *)edid, find_gtf2, &r);
617 return r ? r[13] : 0;
618}
619
620static int
621drm_gtf2_m(struct edid *edid)
622{
623 u8 *r = NULL;
624 drm_for_each_detailed_block((u8 *)edid, find_gtf2, &r);
625 return r ? (r[15] << 8) + r[14] : 0;
626}
627
628static int
629drm_gtf2_k(struct edid *edid)
630{
631 u8 *r = NULL;
632 drm_for_each_detailed_block((u8 *)edid, find_gtf2, &r);
633 return r ? r[16] : 0;
634}
635
636static int
637drm_gtf2_2j(struct edid *edid)
638{
639 u8 *r = NULL;
640 drm_for_each_detailed_block((u8 *)edid, find_gtf2, &r);
641 return r ? r[17] : 0;
642}
643
644/**
645 * standard_timing_level - get std. timing level(CVT/GTF/DMT)
646 * @edid: EDID block to scan
647 */
648static int standard_timing_level(struct edid *edid)
649{
650 if (edid->revision >= 2) {
651 if (edid->revision >= 4 && (edid->features & DRM_EDID_FEATURE_DEFAULT_GTF))
652 return LEVEL_CVT;
653 if (drm_gtf2_hbreak(edid))
654 return LEVEL_GTF2;
655 return LEVEL_GTF;
656 }
657 return LEVEL_DMT;
658}
659
660/*
661 * 0 is reserved. The spec says 0x01 fill for unused timings. Some old
662 * monitors fill with ascii space (0x20) instead.
663 */
664static int
665bad_std_timing(u8 a, u8 b)
666{
667 return (a == 0x00 && b == 0x00) ||
668 (a == 0x01 && b == 0x01) ||
669 (a == 0x20 && b == 0x20);
670}
671
672/**
673 * drm_mode_std - convert standard mode info (width, height, refresh) into mode
674 * @t: standard timing params
675 * @timing_level: standard timing level
676 *
677 * Take the standard timing params (in this case width, aspect, and refresh)
678 * and convert them into a real mode using CVT/GTF/DMT.
679 */
680static struct drm_display_mode *
681drm_mode_std(struct drm_connector *connector, struct edid *edid,
682 struct std_timing *t, int revision)
683{
684 struct drm_device *dev = connector->dev;
685 struct drm_display_mode *m, *mode = NULL;
686 int hsize, vsize;
687 int vrefresh_rate;
688 unsigned aspect_ratio = (t->vfreq_aspect & EDID_TIMING_ASPECT_MASK)
689 >> EDID_TIMING_ASPECT_SHIFT;
690 unsigned vfreq = (t->vfreq_aspect & EDID_TIMING_VFREQ_MASK)
691 >> EDID_TIMING_VFREQ_SHIFT;
692 int timing_level = standard_timing_level(edid);
693
694 if (bad_std_timing(t->hsize, t->vfreq_aspect))
695 return NULL;
696
697 /* According to the EDID spec, the hdisplay = hsize * 8 + 248 */
698 hsize = t->hsize * 8 + 248;
699 /* vrefresh_rate = vfreq + 60 */
700 vrefresh_rate = vfreq + 60;
701 /* the vdisplay is calculated based on the aspect ratio */
702 if (aspect_ratio == 0) {
703 if (revision < 3)
704 vsize = hsize;
705 else
706 vsize = (hsize * 10) / 16;
707 } else if (aspect_ratio == 1)
708 vsize = (hsize * 3) / 4;
709 else if (aspect_ratio == 2)
710 vsize = (hsize * 4) / 5;
711 else
712 vsize = (hsize * 9) / 16;
713
714 /* HDTV hack, part 1 */
715 if (vrefresh_rate == 60 &&
716 ((hsize == 1360 && vsize == 765) ||
717 (hsize == 1368 && vsize == 769))) {
718 hsize = 1366;
719 vsize = 768;
720 }
721
722 /*
723 * If this connector already has a mode for this size and refresh
724 * rate (because it came from detailed or CVT info), use that
725 * instead. This way we don't have to guess at interlace or
726 * reduced blanking.
727 */
728 list_for_each_entry(m, &connector->probed_modes, head)
729 if (m->hdisplay == hsize && m->vdisplay == vsize &&
730 drm_mode_vrefresh(m) == vrefresh_rate)
731 return NULL;
732
733 /* HDTV hack, part 2 */
734 if (hsize == 1366 && vsize == 768 && vrefresh_rate == 60) {
735 mode = drm_cvt_mode(dev, 1366, 768, vrefresh_rate, 0, 0,
736 false);
737 mode->hdisplay = 1366;
738 mode->hsync_start = mode->hsync_start - 1;
739 mode->hsync_end = mode->hsync_end - 1;
740 return mode;
741 }
742
743 /* check whether it can be found in default mode table */
744 mode = drm_mode_find_dmt(dev, hsize, vsize, vrefresh_rate);
745 if (mode)
746 return mode;
747
748 switch (timing_level) {
749 case LEVEL_DMT:
750 break;
751 case LEVEL_GTF:
752 mode = drm_gtf_mode(dev, hsize, vsize, vrefresh_rate, 0, 0);
753 break;
754 case LEVEL_GTF2:
755 /*
756 * This is potentially wrong if there's ever a monitor with
757 * more than one ranges section, each claiming a different
758 * secondary GTF curve. Please don't do that.
759 */
760 mode = drm_gtf_mode(dev, hsize, vsize, vrefresh_rate, 0, 0);
761 if (drm_mode_hsync(mode) > drm_gtf2_hbreak(edid)) {
762 kfree(mode);
763 mode = drm_gtf_mode_complex(dev, hsize, vsize,
764 vrefresh_rate, 0, 0,
765 drm_gtf2_m(edid),
766 drm_gtf2_2c(edid),
767 drm_gtf2_k(edid),
768 drm_gtf2_2j(edid));
769 }
770 break;
771 case LEVEL_CVT:
772 mode = drm_cvt_mode(dev, hsize, vsize, vrefresh_rate, 0, 0,
773 false);
774 break;
775 }
776 return mode;
777}
778
779/*
780 * EDID is delightfully ambiguous about how interlaced modes are to be
781 * encoded. Our internal representation is of frame height, but some
782 * HDTV detailed timings are encoded as field height.
783 *
784 * The format list here is from CEA, in frame size. Technically we
785 * should be checking refresh rate too. Whatever.
786 */
787static void
788drm_mode_do_interlace_quirk(struct drm_display_mode *mode,
789 struct detailed_pixel_timing *pt)
790{
791 int i;
792 static const struct {
793 int w, h;
794 } cea_interlaced[] = {
795 { 1920, 1080 },
796 { 720, 480 },
797 { 1440, 480 },
798 { 2880, 480 },
799 { 720, 576 },
800 { 1440, 576 },
801 { 2880, 576 },
802 };
803
804 if (!(pt->misc & DRM_EDID_PT_INTERLACED))
805 return;
806
807 for (i = 0; i < ARRAY_SIZE(cea_interlaced); i++) {
808 if ((mode->hdisplay == cea_interlaced[i].w) &&
809 (mode->vdisplay == cea_interlaced[i].h / 2)) {
810 mode->vdisplay *= 2;
811 mode->vsync_start *= 2;
812 mode->vsync_end *= 2;
813 mode->vtotal *= 2;
814 mode->vtotal |= 1;
815 }
816 }
817
818 mode->flags |= DRM_MODE_FLAG_INTERLACE;
819}
820
821/**
822 * drm_mode_detailed - create a new mode from an EDID detailed timing section
823 * @dev: DRM device (needed to create new mode)
824 * @edid: EDID block
825 * @timing: EDID detailed timing info
826 * @quirks: quirks to apply
827 *
828 * An EDID detailed timing block contains enough info for us to create and
829 * return a new struct drm_display_mode.
830 */
831static struct drm_display_mode *drm_mode_detailed(struct drm_device *dev,
832 struct edid *edid,
833 struct detailed_timing *timing,
834 u32 quirks)
835{
836 struct drm_display_mode *mode;
837 struct detailed_pixel_timing *pt = &timing->data.pixel_data;
838 unsigned hactive = (pt->hactive_hblank_hi & 0xf0) << 4 | pt->hactive_lo;
839 unsigned vactive = (pt->vactive_vblank_hi & 0xf0) << 4 | pt->vactive_lo;
840 unsigned hblank = (pt->hactive_hblank_hi & 0xf) << 8 | pt->hblank_lo;
841 unsigned vblank = (pt->vactive_vblank_hi & 0xf) << 8 | pt->vblank_lo;
842 unsigned hsync_offset = (pt->hsync_vsync_offset_pulse_width_hi & 0xc0) << 2 | pt->hsync_offset_lo;
843 unsigned hsync_pulse_width = (pt->hsync_vsync_offset_pulse_width_hi & 0x30) << 4 | pt->hsync_pulse_width_lo;
844 unsigned vsync_offset = (pt->hsync_vsync_offset_pulse_width_hi & 0xc) >> 2 | pt->vsync_offset_pulse_width_lo >> 4;
845 unsigned vsync_pulse_width = (pt->hsync_vsync_offset_pulse_width_hi & 0x3) << 4 | (pt->vsync_offset_pulse_width_lo & 0xf);
846
847 /* ignore tiny modes */
848 if (hactive < 64 || vactive < 64)
849 return NULL;
850
851 if (pt->misc & DRM_EDID_PT_STEREO) {
852 printk(KERN_WARNING "stereo mode not supported\n");
853 return NULL;
854 }
855 if (!(pt->misc & DRM_EDID_PT_SEPARATE_SYNC)) {
856 printk(KERN_WARNING "composite sync not supported\n");
857 }
858
859 /* it is incorrect if hsync/vsync width is zero */
860 if (!hsync_pulse_width || !vsync_pulse_width) {
861 DRM_DEBUG_KMS("Incorrect Detailed timing. "
862 "Wrong Hsync/Vsync pulse width\n");
863 return NULL;
864 }
865 mode = drm_mode_create(dev);
866 if (!mode)
867 return NULL;
868
869 mode->type = DRM_MODE_TYPE_DRIVER;
870
871 if (quirks & EDID_QUIRK_135_CLOCK_TOO_HIGH)
872 timing->pixel_clock = cpu_to_le16(1088);
873
874 mode->clock = le16_to_cpu(timing->pixel_clock) * 10;
875
876 mode->hdisplay = hactive;
877 mode->hsync_start = mode->hdisplay + hsync_offset;
878 mode->hsync_end = mode->hsync_start + hsync_pulse_width;
879 mode->htotal = mode->hdisplay + hblank;
880
881 mode->vdisplay = vactive;
882 mode->vsync_start = mode->vdisplay + vsync_offset;
883 mode->vsync_end = mode->vsync_start + vsync_pulse_width;
884 mode->vtotal = mode->vdisplay + vblank;
885
886 /* Some EDIDs have bogus h/vtotal values */
887 if (mode->hsync_end > mode->htotal)
888 mode->htotal = mode->hsync_end + 1;
889 if (mode->vsync_end > mode->vtotal)
890 mode->vtotal = mode->vsync_end + 1;
891
892 drm_mode_do_interlace_quirk(mode, pt);
893
894 drm_mode_set_name(mode);
895
896 if (quirks & EDID_QUIRK_DETAILED_SYNC_PP) {
897 pt->misc |= DRM_EDID_PT_HSYNC_POSITIVE | DRM_EDID_PT_VSYNC_POSITIVE;
898 }
899
900 mode->flags |= (pt->misc & DRM_EDID_PT_HSYNC_POSITIVE) ?
901 DRM_MODE_FLAG_PHSYNC : DRM_MODE_FLAG_NHSYNC;
902 mode->flags |= (pt->misc & DRM_EDID_PT_VSYNC_POSITIVE) ?
903 DRM_MODE_FLAG_PVSYNC : DRM_MODE_FLAG_NVSYNC;
904
905 mode->width_mm = pt->width_mm_lo | (pt->width_height_mm_hi & 0xf0) << 4;
906 mode->height_mm = pt->height_mm_lo | (pt->width_height_mm_hi & 0xf) << 8;
907
908 if (quirks & EDID_QUIRK_DETAILED_IN_CM) {
909 mode->width_mm *= 10;
910 mode->height_mm *= 10;
911 }
912
913 if (quirks & EDID_QUIRK_DETAILED_USE_MAXIMUM_SIZE) {
914 mode->width_mm = edid->width_cm * 10;
915 mode->height_mm = edid->height_cm * 10;
916 }
917
918 return mode;
919}
920
921static bool
922mode_is_rb(const struct drm_display_mode *mode)
923{
924 return (mode->htotal - mode->hdisplay == 160) &&
925 (mode->hsync_end - mode->hdisplay == 80) &&
926 (mode->hsync_end - mode->hsync_start == 32) &&
927 (mode->vsync_start - mode->vdisplay == 3);
928}
929
930static bool
931mode_in_hsync_range(const struct drm_display_mode *mode,
932 struct edid *edid, u8 *t)
933{
934 int hsync, hmin, hmax;
935
936 hmin = t[7];
937 if (edid->revision >= 4)
938 hmin += ((t[4] & 0x04) ? 255 : 0);
939 hmax = t[8];
940 if (edid->revision >= 4)
941 hmax += ((t[4] & 0x08) ? 255 : 0);
942 hsync = drm_mode_hsync(mode);
943
944 return (hsync <= hmax && hsync >= hmin);
945}
946
947static bool
948mode_in_vsync_range(const struct drm_display_mode *mode,
949 struct edid *edid, u8 *t)
950{
951 int vsync, vmin, vmax;
952
953 vmin = t[5];
954 if (edid->revision >= 4)
955 vmin += ((t[4] & 0x01) ? 255 : 0);
956 vmax = t[6];
957 if (edid->revision >= 4)
958 vmax += ((t[4] & 0x02) ? 255 : 0);
959 vsync = drm_mode_vrefresh(mode);
960
961 return (vsync <= vmax && vsync >= vmin);
962}
963
964static u32
965range_pixel_clock(struct edid *edid, u8 *t)
966{
967 /* unspecified */
968 if (t[9] == 0 || t[9] == 255)
969 return 0;
970
971 /* 1.4 with CVT support gives us real precision, yay */
972 if (edid->revision >= 4 && t[10] == 0x04)
973 return (t[9] * 10000) - ((t[12] >> 2) * 250);
974
975 /* 1.3 is pathetic, so fuzz up a bit */
976 return t[9] * 10000 + 5001;
977}
978
979static bool
980mode_in_range(const struct drm_display_mode *mode, struct edid *edid,
981 struct detailed_timing *timing)
982{
983 u32 max_clock;
984 u8 *t = (u8 *)timing;
985
986 if (!mode_in_hsync_range(mode, edid, t))
987 return false;
988
989 if (!mode_in_vsync_range(mode, edid, t))
990 return false;
991
992 if ((max_clock = range_pixel_clock(edid, t)))
993 if (mode->clock > max_clock)
994 return false;
995
996 /* 1.4 max horizontal check */
997 if (edid->revision >= 4 && t[10] == 0x04)
998 if (t[13] && mode->hdisplay > 8 * (t[13] + (256 * (t[12]&0x3))))
999 return false;
1000
1001 if (mode_is_rb(mode) && !drm_monitor_supports_rb(edid))
1002 return false;
1003
1004 return true;
1005}
1006
1007/*
1008 * XXX If drm_dmt_modes ever regrows the CVT-R modes (and it will) this will
1009 * need to account for them.
1010 */
1011static int
1012drm_gtf_modes_for_range(struct drm_connector *connector, struct edid *edid,
1013 struct detailed_timing *timing)
1014{
1015 int i, modes = 0;
1016 struct drm_display_mode *newmode;
1017 struct drm_device *dev = connector->dev;
1018
1019 for (i = 0; i < drm_num_dmt_modes; i++) {
1020 if (mode_in_range(drm_dmt_modes + i, edid, timing)) {
1021 newmode = drm_mode_duplicate(dev, &drm_dmt_modes[i]);
1022 if (newmode) {
1023 drm_mode_probed_add(connector, newmode);
1024 modes++;
1025 }
1026 }
1027 }
1028
1029 return modes;
1030}
1031
1032static void
1033do_inferred_modes(struct detailed_timing *timing, void *c)
1034{
1035 struct detailed_mode_closure *closure = c;
1036 struct detailed_non_pixel *data = &timing->data.other_data;
1037 int gtf = (closure->edid->features & DRM_EDID_FEATURE_DEFAULT_GTF);
1038
1039 if (gtf && data->type == EDID_DETAIL_MONITOR_RANGE)
1040 closure->modes += drm_gtf_modes_for_range(closure->connector,
1041 closure->edid,
1042 timing);
1043}
1044
1045static int
1046add_inferred_modes(struct drm_connector *connector, struct edid *edid)
1047{
1048 struct detailed_mode_closure closure = {
1049 connector, edid, 0, 0, 0
1050 };
1051
1052 if (version_greater(edid, 1, 0))
1053 drm_for_each_detailed_block((u8 *)edid, do_inferred_modes,
1054 &closure);
1055
1056 return closure.modes;
1057}
1058
1059static int
1060drm_est3_modes(struct drm_connector *connector, struct detailed_timing *timing)
1061{
1062 int i, j, m, modes = 0;
1063 struct drm_display_mode *mode;
1064 u8 *est = ((u8 *)timing) + 5;
1065
1066 for (i = 0; i < 6; i++) {
1067 for (j = 7; j > 0; j--) {
1068 m = (i * 8) + (7 - j);
1069 if (m >= ARRAY_SIZE(est3_modes))
1070 break;
1071 if (est[i] & (1 << j)) {
1072 mode = drm_mode_find_dmt(connector->dev,
1073 est3_modes[m].w,
1074 est3_modes[m].h,
1075 est3_modes[m].r
1076 /*, est3_modes[m].rb */);
1077 if (mode) {
1078 drm_mode_probed_add(connector, mode);
1079 modes++;
1080 }
1081 }
1082 }
1083 }
1084
1085 return modes;
1086}
1087
1088static void
1089do_established_modes(struct detailed_timing *timing, void *c)
1090{
1091 struct detailed_mode_closure *closure = c;
1092 struct detailed_non_pixel *data = &timing->data.other_data;
1093
1094 if (data->type == EDID_DETAIL_EST_TIMINGS)
1095 closure->modes += drm_est3_modes(closure->connector, timing);
1096}
1097
1098/**
1099 * add_established_modes - get est. modes from EDID and add them
1100 * @edid: EDID block to scan
1101 *
1102 * Each EDID block contains a bitmap of the supported "established modes" list
1103 * (defined above). Tease them out and add them to the global modes list.
1104 */
1105static int
1106add_established_modes(struct drm_connector *connector, struct edid *edid)
1107{
1108 struct drm_device *dev = connector->dev;
1109 unsigned long est_bits = edid->established_timings.t1 |
1110 (edid->established_timings.t2 << 8) |
1111 ((edid->established_timings.mfg_rsvd & 0x80) << 9);
1112 int i, modes = 0;
1113 struct detailed_mode_closure closure = {
1114 connector, edid, 0, 0, 0
1115 };
1116
1117 for (i = 0; i <= EDID_EST_TIMINGS; i++) {
1118 if (est_bits & (1<<i)) {
1119 struct drm_display_mode *newmode;
1120 newmode = drm_mode_duplicate(dev, &edid_est_modes[i]);
1121 if (newmode) {
1122 drm_mode_probed_add(connector, newmode);
1123 modes++;
1124 }
1125 }
1126 }
1127
1128 if (version_greater(edid, 1, 0))
1129 drm_for_each_detailed_block((u8 *)edid,
1130 do_established_modes, &closure);
1131
1132 return modes + closure.modes;
1133}
1134
1135static void
1136do_standard_modes(struct detailed_timing *timing, void *c)
1137{
1138 struct detailed_mode_closure *closure = c;
1139 struct detailed_non_pixel *data = &timing->data.other_data;
1140 struct drm_connector *connector = closure->connector;
1141 struct edid *edid = closure->edid;
1142
1143 if (data->type == EDID_DETAIL_STD_MODES) {
1144 int i;
1145 for (i = 0; i < 6; i++) {
1146 struct std_timing *std;
1147 struct drm_display_mode *newmode;
1148
1149 std = &data->data.timings[i];
1150 newmode = drm_mode_std(connector, edid, std,
1151 edid->revision);
1152 if (newmode) {
1153 drm_mode_probed_add(connector, newmode);
1154 closure->modes++;
1155 }
1156 }
1157 }
1158}
1159
1160/**
1161 * add_standard_modes - get std. modes from EDID and add them
1162 * @edid: EDID block to scan
1163 *
1164 * Standard modes can be calculated using the appropriate standard (DMT,
1165 * GTF or CVT. Grab them from @edid and add them to the list.
1166 */
1167static int
1168add_standard_modes(struct drm_connector *connector, struct edid *edid)
1169{
1170 int i, modes = 0;
1171 struct detailed_mode_closure closure = {
1172 connector, edid, 0, 0, 0
1173 };
1174
1175 for (i = 0; i < EDID_STD_TIMINGS; i++) {
1176 struct drm_display_mode *newmode;
1177
1178 newmode = drm_mode_std(connector, edid,
1179 &edid->standard_timings[i],
1180 edid->revision);
1181 if (newmode) {
1182 drm_mode_probed_add(connector, newmode);
1183 modes++;
1184 }
1185 }
1186
1187 if (version_greater(edid, 1, 0))
1188 drm_for_each_detailed_block((u8 *)edid, do_standard_modes,
1189 &closure);
1190
1191 /* XXX should also look for standard codes in VTB blocks */
1192
1193 return modes + closure.modes;
1194}
1195
1196static int drm_cvt_modes(struct drm_connector *connector,
1197 struct detailed_timing *timing)
1198{
1199 int i, j, modes = 0;
1200 struct drm_display_mode *newmode;
1201 struct drm_device *dev = connector->dev;
1202 struct cvt_timing *cvt;
1203 const int rates[] = { 60, 85, 75, 60, 50 };
1204 const u8 empty[3] = { 0, 0, 0 };
1205
1206 for (i = 0; i < 4; i++) {
1207 int uninitialized_var(width), height;
1208 cvt = &(timing->data.other_data.data.cvt[i]);
1209
1210 if (!memcmp(cvt->code, empty, 3))
1211 continue;
1212
1213 height = (cvt->code[0] + ((cvt->code[1] & 0xf0) << 4) + 1) * 2;
1214 switch (cvt->code[1] & 0x0c) {
1215 case 0x00:
1216 width = height * 4 / 3;
1217 break;
1218 case 0x04:
1219 width = height * 16 / 9;
1220 break;
1221 case 0x08:
1222 width = height * 16 / 10;
1223 break;
1224 case 0x0c:
1225 width = height * 15 / 9;
1226 break;
1227 }
1228
1229 for (j = 1; j < 5; j++) {
1230 if (cvt->code[2] & (1 << j)) {
1231 newmode = drm_cvt_mode(dev, width, height,
1232 rates[j], j == 0,
1233 false, false);
1234 if (newmode) {
1235 drm_mode_probed_add(connector, newmode);
1236 modes++;
1237 }
1238 }
1239 }
1240 }
1241
1242 return modes;
1243}
1244
1245static void
1246do_cvt_mode(struct detailed_timing *timing, void *c)
1247{
1248 struct detailed_mode_closure *closure = c;
1249 struct detailed_non_pixel *data = &timing->data.other_data;
1250
1251 if (data->type == EDID_DETAIL_CVT_3BYTE)
1252 closure->modes += drm_cvt_modes(closure->connector, timing);
1253}
1254
1255static int
1256add_cvt_modes(struct drm_connector *connector, struct edid *edid)
1257{
1258 struct detailed_mode_closure closure = {
1259 connector, edid, 0, 0, 0
1260 };
1261
1262 if (version_greater(edid, 1, 2))
1263 drm_for_each_detailed_block((u8 *)edid, do_cvt_mode, &closure);
1264
1265 /* XXX should also look for CVT codes in VTB blocks */
1266
1267 return closure.modes;
1268}
1269
1270static void
1271do_detailed_mode(struct detailed_timing *timing, void *c)
1272{
1273 struct detailed_mode_closure *closure = c;
1274 struct drm_display_mode *newmode;
1275
1276 if (timing->pixel_clock) {
1277 newmode = drm_mode_detailed(closure->connector->dev,
1278 closure->edid, timing,
1279 closure->quirks);
1280 if (!newmode)
1281 return;
1282
1283 if (closure->preferred)
1284 newmode->type |= DRM_MODE_TYPE_PREFERRED;
1285
1286 drm_mode_probed_add(closure->connector, newmode);
1287 closure->modes++;
1288 closure->preferred = 0;
1289 }
1290}
1291
1292/*
1293 * add_detailed_modes - Add modes from detailed timings
1294 * @connector: attached connector
1295 * @edid: EDID block to scan
1296 * @quirks: quirks to apply
1297 */
1298static int
1299add_detailed_modes(struct drm_connector *connector, struct edid *edid,
1300 u32 quirks)
1301{
1302 struct detailed_mode_closure closure = {
1303 connector,
1304 edid,
1305 1,
1306 quirks,
1307 0
1308 };
1309
1310 if (closure.preferred && !version_greater(edid, 1, 3))
1311 closure.preferred =
1312 (edid->features & DRM_EDID_FEATURE_PREFERRED_TIMING);
1313
1314 drm_for_each_detailed_block((u8 *)edid, do_detailed_mode, &closure);
1315
1316 return closure.modes;
1317}
1318
1319#define HDMI_IDENTIFIER 0x000C03
1320#define AUDIO_BLOCK 0x01
1321#define VENDOR_BLOCK 0x03
1322#define EDID_BASIC_AUDIO (1 << 6)
1323
1324/**
1325 * Search EDID for CEA extension block.
1326 */
1327u8 *drm_find_cea_extension(struct edid *edid)
1328{
1329 u8 *edid_ext = NULL;
1330 int i;
1331
1332 /* No EDID or EDID extensions */
1333 if (edid == NULL || edid->extensions == 0)
1334 return NULL;
1335
1336 /* Find CEA extension */
1337 for (i = 0; i < edid->extensions; i++) {
1338 edid_ext = (u8 *)edid + EDID_LENGTH * (i + 1);
1339 if (edid_ext[0] == CEA_EXT)
1340 break;
1341 }
1342
1343 if (i == edid->extensions)
1344 return NULL;
1345
1346 return edid_ext;
1347}
1348EXPORT_SYMBOL(drm_find_cea_extension);
1349
1350/**
1351 * drm_detect_hdmi_monitor - detect whether monitor is hdmi.
1352 * @edid: monitor EDID information
1353 *
1354 * Parse the CEA extension according to CEA-861-B.
1355 * Return true if HDMI, false if not or unknown.
1356 */
1357bool drm_detect_hdmi_monitor(struct edid *edid)
1358{
1359 u8 *edid_ext;
1360 int i, hdmi_id;
1361 int start_offset, end_offset;
1362 bool is_hdmi = false;
1363
1364 edid_ext = drm_find_cea_extension(edid);
1365 if (!edid_ext)
1366 goto end;
1367
1368 /* Data block offset in CEA extension block */
1369 start_offset = 4;
1370 end_offset = edid_ext[2];
1371
1372 /*
1373 * Because HDMI identifier is in Vendor Specific Block,
1374 * search it from all data blocks of CEA extension.
1375 */
1376 for (i = start_offset; i < end_offset;
1377 /* Increased by data block len */
1378 i += ((edid_ext[i] & 0x1f) + 1)) {
1379 /* Find vendor specific block */
1380 if ((edid_ext[i] >> 5) == VENDOR_BLOCK) {
1381 hdmi_id = edid_ext[i + 1] | (edid_ext[i + 2] << 8) |
1382 edid_ext[i + 3] << 16;
1383 /* Find HDMI identifier */
1384 if (hdmi_id == HDMI_IDENTIFIER)
1385 is_hdmi = true;
1386 break;
1387 }
1388 }
1389
1390end:
1391 return is_hdmi;
1392}
1393EXPORT_SYMBOL(drm_detect_hdmi_monitor);
1394
1395/**
1396 * drm_detect_monitor_audio - check monitor audio capability
1397 *
1398 * Monitor should have CEA extension block.
1399 * If monitor has 'basic audio', but no CEA audio blocks, it's 'basic
1400 * audio' only. If there is any audio extension block and supported
1401 * audio format, assume at least 'basic audio' support, even if 'basic
1402 * audio' is not defined in EDID.
1403 *
1404 */
1405bool drm_detect_monitor_audio(struct edid *edid)
1406{
1407 u8 *edid_ext;
1408 int i, j;
1409 bool has_audio = false;
1410 int start_offset, end_offset;
1411
1412 edid_ext = drm_find_cea_extension(edid);
1413 if (!edid_ext)
1414 goto end;
1415
1416 has_audio = ((edid_ext[3] & EDID_BASIC_AUDIO) != 0);
1417
1418 if (has_audio) {
1419 DRM_DEBUG_KMS("Monitor has basic audio support\n");
1420 goto end;
1421 }
1422
1423 /* Data block offset in CEA extension block */
1424 start_offset = 4;
1425 end_offset = edid_ext[2];
1426
1427 for (i = start_offset; i < end_offset;
1428 i += ((edid_ext[i] & 0x1f) + 1)) {
1429 if ((edid_ext[i] >> 5) == AUDIO_BLOCK) {
1430 has_audio = true;
1431 for (j = 1; j < (edid_ext[i] & 0x1f); j += 3)
1432 DRM_DEBUG_KMS("CEA audio format %d\n",
1433 (edid_ext[i + j] >> 3) & 0xf);
1434 goto end;
1435 }
1436 }
1437end:
1438 return has_audio;
1439}
1440EXPORT_SYMBOL(drm_detect_monitor_audio);
1441
1442/**
1443 * drm_add_display_info - pull display info out if present
1444 * @edid: EDID data
1445 * @info: display info (attached to connector)
1446 *
1447 * Grab any available display info and stuff it into the drm_display_info
1448 * structure that's part of the connector. Useful for tracking bpp and
1449 * color spaces.
1450 */
1451static void drm_add_display_info(struct edid *edid,
1452 struct drm_display_info *info)
1453{
1454 u8 *edid_ext;
1455
1456 info->width_mm = edid->width_cm * 10;
1457 info->height_mm = edid->height_cm * 10;
1458
1459 /* driver figures it out in this case */
1460 info->bpc = 0;
1461 info->color_formats = 0;
1462
1463 /* Only defined for 1.4 with digital displays */
1464 if (edid->revision < 4)
1465 return;
1466
1467 if (!(edid->input & DRM_EDID_INPUT_DIGITAL))
1468 return;
1469
1470 switch (edid->input & DRM_EDID_DIGITAL_DEPTH_MASK) {
1471 case DRM_EDID_DIGITAL_DEPTH_6:
1472 info->bpc = 6;
1473 break;
1474 case DRM_EDID_DIGITAL_DEPTH_8:
1475 info->bpc = 8;
1476 break;
1477 case DRM_EDID_DIGITAL_DEPTH_10:
1478 info->bpc = 10;
1479 break;
1480 case DRM_EDID_DIGITAL_DEPTH_12:
1481 info->bpc = 12;
1482 break;
1483 case DRM_EDID_DIGITAL_DEPTH_14:
1484 info->bpc = 14;
1485 break;
1486 case DRM_EDID_DIGITAL_DEPTH_16:
1487 info->bpc = 16;
1488 break;
1489 case DRM_EDID_DIGITAL_DEPTH_UNDEF:
1490 default:
1491 info->bpc = 0;
1492 break;
1493 }
1494
1495 info->color_formats = DRM_COLOR_FORMAT_RGB444;
1496 if (info->color_formats & DRM_EDID_FEATURE_RGB_YCRCB444)
1497 info->color_formats = DRM_COLOR_FORMAT_YCRCB444;
1498 if (info->color_formats & DRM_EDID_FEATURE_RGB_YCRCB422)
1499 info->color_formats = DRM_COLOR_FORMAT_YCRCB422;
1500
1501 /* Get data from CEA blocks if present */
1502 edid_ext = drm_find_cea_extension(edid);
1503 if (!edid_ext)
1504 return;
1505
1506 info->cea_rev = edid_ext[1];
1507}
1508
1509/**
1510 * drm_add_edid_modes - add modes from EDID data, if available
1511 * @connector: connector we're probing
1512 * @edid: edid data
1513 *
1514 * Add the specified modes to the connector's mode list.
1515 *
1516 * Return number of modes added or 0 if we couldn't find any.
1517 */
1518int drm_add_edid_modes(struct drm_connector *connector, struct edid *edid)
1519{
1520 int num_modes = 0;
1521 u32 quirks;
1522
1523 if (edid == NULL) {
1524 return 0;
1525 }
1526 if (!drm_edid_is_valid(edid)) {
1527 dev_warn(connector->dev->dev, "%s: EDID invalid.\n",
1528 drm_get_connector_name(connector));
1529 return 0;
1530 }
1531
1532 quirks = edid_get_quirks(edid);
1533
1534 /*
1535 * EDID spec says modes should be preferred in this order:
1536 * - preferred detailed mode
1537 * - other detailed modes from base block
1538 * - detailed modes from extension blocks
1539 * - CVT 3-byte code modes
1540 * - standard timing codes
1541 * - established timing codes
1542 * - modes inferred from GTF or CVT range information
1543 *
1544 * We get this pretty much right.
1545 *
1546 * XXX order for additional mode types in extension blocks?
1547 */
1548 num_modes += add_detailed_modes(connector, edid, quirks);
1549 num_modes += add_cvt_modes(connector, edid);
1550 num_modes += add_standard_modes(connector, edid);
1551 num_modes += add_established_modes(connector, edid);
1552 num_modes += add_inferred_modes(connector, edid);
1553
1554 if (quirks & (EDID_QUIRK_PREFER_LARGE_60 | EDID_QUIRK_PREFER_LARGE_75))
1555 edid_fixup_preferred(connector, quirks);
1556
1557 drm_add_display_info(edid, &connector->display_info);
1558
1559 return num_modes;
1560}
1561EXPORT_SYMBOL(drm_add_edid_modes);
1562
1563/**
1564 * drm_add_modes_noedid - add modes for the connectors without EDID
1565 * @connector: connector we're probing
1566 * @hdisplay: the horizontal display limit
1567 * @vdisplay: the vertical display limit
1568 *
1569 * Add the specified modes to the connector's mode list. Only when the
1570 * hdisplay/vdisplay is not beyond the given limit, it will be added.
1571 *
1572 * Return number of modes added or 0 if we couldn't find any.
1573 */
1574int drm_add_modes_noedid(struct drm_connector *connector,
1575 int hdisplay, int vdisplay)
1576{
1577 int i, count, num_modes = 0;
1578 struct drm_display_mode *mode;
1579 struct drm_device *dev = connector->dev;
1580
1581 count = sizeof(drm_dmt_modes) / sizeof(struct drm_display_mode);
1582 if (hdisplay < 0)
1583 hdisplay = 0;
1584 if (vdisplay < 0)
1585 vdisplay = 0;
1586
1587 for (i = 0; i < count; i++) {
1588 const struct drm_display_mode *ptr = &drm_dmt_modes[i];
1589 if (hdisplay && vdisplay) {
1590 /*
1591 * Only when two are valid, they will be used to check
1592 * whether the mode should be added to the mode list of
1593 * the connector.
1594 */
1595 if (ptr->hdisplay > hdisplay ||
1596 ptr->vdisplay > vdisplay)
1597 continue;
1598 }
1599 if (drm_mode_vrefresh(ptr) > 61)
1600 continue;
1601 mode = drm_mode_duplicate(dev, ptr);
1602 if (mode) {
1603 drm_mode_probed_add(connector, mode);
1604 num_modes++;
1605 }
1606 }
1607 return num_modes;
1608}
1609EXPORT_SYMBOL(drm_add_modes_noedid);