2 * Copyright (c) 2006 Luc Verhaegen (quirks list)
3 * Copyright (c) 2007-2008 Intel Corporation
4 * Jesse Barnes <jesse.barnes@intel.com>
6 * DDC probing routines (drm_ddc_read & drm_do_probe_ddc_edid) originally from
8 * Copyright (C) 2006 Dennis Munsie <dmunsie@cecropia.com>
10 * Permission is hereby granted, free of charge, to any person obtaining a
11 * copy of this software and associated documentation files (the "Software"),
12 * to deal in the Software without restriction, including without limitation
13 * the rights to use, copy, modify, merge, publish, distribute, sub license,
14 * and/or sell copies of the Software, and to permit persons to whom the
15 * Software is furnished to do so, subject to the following conditions:
17 * The above copyright notice and this permission notice (including the
18 * next paragraph) shall be included in all copies or substantial portions
21 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
22 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
23 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
24 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
25 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
26 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
27 * DEALINGS IN THE SOFTWARE.
29 #include <linux/kernel.h>
30 #include <linux/i2c.h>
31 #include <linux/i2c-algo-bit.h>
37 * - support EDID 1.4 (incl. CE blocks)
41 * EDID blocks out in the wild have a variety of bugs, try to collect
42 * them here (note that userspace may work around broken monitors first,
43 * but fixes should make their way here so that the kernel "just works"
44 * on as many displays as possible).
47 /* First detailed mode wrong, use largest 60Hz mode */
48 #define EDID_QUIRK_PREFER_LARGE_60 (1 << 0)
49 /* Reported 135MHz pixel clock is too high, needs adjustment */
50 #define EDID_QUIRK_135_CLOCK_TOO_HIGH (1 << 1)
51 /* Prefer the largest mode at 75 Hz */
52 #define EDID_QUIRK_PREFER_LARGE_75 (1 << 2)
53 /* Detail timing is in cm not mm */
54 #define EDID_QUIRK_DETAILED_IN_CM (1 << 3)
55 /* Detailed timing descriptors have bogus size values, so just take the
56 * maximum size and use that.
58 #define EDID_QUIRK_DETAILED_USE_MAXIMUM_SIZE (1 << 4)
59 /* Monitor forgot to set the first detailed is preferred bit. */
60 #define EDID_QUIRK_FIRST_DETAILED_PREFERRED (1 << 5)
61 /* use +hsync +vsync for detailed mode */
62 #define EDID_QUIRK_DETAILED_SYNC_PP (1 << 6)
63 /* define the number of Extension EDID block */
64 #define MAX_EDID_EXT_NUM 4
70 static struct edid_quirk {
74 } edid_quirk_list[] = {
76 { "ACR", 44358, EDID_QUIRK_PREFER_LARGE_60 },
78 { "API", 0x7602, EDID_QUIRK_PREFER_LARGE_60 },
80 { "ACR", 2423, EDID_QUIRK_FIRST_DETAILED_PREFERRED },
82 /* Belinea 10 15 55 */
83 { "MAX", 1516, EDID_QUIRK_PREFER_LARGE_60 },
84 { "MAX", 0x77e, EDID_QUIRK_PREFER_LARGE_60 },
86 /* Envision Peripherals, Inc. EN-7100e */
87 { "EPI", 59264, EDID_QUIRK_135_CLOCK_TOO_HIGH },
89 /* Funai Electronics PM36B */
90 { "FCM", 13600, EDID_QUIRK_PREFER_LARGE_75 |
91 EDID_QUIRK_DETAILED_IN_CM },
93 /* LG Philips LCD LP154W01-A5 */
94 { "LPL", 0, EDID_QUIRK_DETAILED_USE_MAXIMUM_SIZE },
95 { "LPL", 0x2a00, EDID_QUIRK_DETAILED_USE_MAXIMUM_SIZE },
97 /* Philips 107p5 CRT */
98 { "PHL", 57364, EDID_QUIRK_FIRST_DETAILED_PREFERRED },
101 { "PTS", 765, EDID_QUIRK_FIRST_DETAILED_PREFERRED },
103 /* Samsung SyncMaster 205BW. Note: irony */
104 { "SAM", 541, EDID_QUIRK_DETAILED_SYNC_PP },
105 /* Samsung SyncMaster 22[5-6]BW */
106 { "SAM", 596, EDID_QUIRK_PREFER_LARGE_60 },
107 { "SAM", 638, EDID_QUIRK_PREFER_LARGE_60 },
111 /* Valid EDID header has these bytes */
112 static u8 edid_header[] = { 0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00 };
115 * edid_is_valid - sanity check EDID data
118 * Sanity check the EDID block by looking at the header, the version number
119 * and the checksum. Return 0 if the EDID doesn't check out, or 1 if it's
122 static bool edid_is_valid(struct edid *edid)
126 u8 *raw_edid = (u8 *)edid;
128 if (memcmp(edid->header, edid_header, sizeof(edid_header)))
130 if (edid->version != 1) {
131 DRM_ERROR("EDID has major version %d, instead of 1\n", edid->version);
134 if (edid->revision > 4)
135 DRM_DEBUG("EDID minor > 4, assuming backward compatibility\n");
137 for (i = 0; i < EDID_LENGTH; i++)
140 DRM_ERROR("EDID checksum is invalid, remainder is %d\n", csum);
148 DRM_ERROR("Raw EDID:\n");
149 print_hex_dump_bytes(KERN_ERR, DUMP_PREFIX_NONE, raw_edid, EDID_LENGTH);
156 * edid_vendor - match a string against EDID's obfuscated vendor field
157 * @edid: EDID to match
158 * @vendor: vendor string
160 * Returns true if @vendor is in @edid, false otherwise
162 static bool edid_vendor(struct edid *edid, char *vendor)
166 edid_vendor[0] = ((edid->mfg_id[0] & 0x7c) >> 2) + '@';
167 edid_vendor[1] = (((edid->mfg_id[0] & 0x3) << 3) |
168 ((edid->mfg_id[1] & 0xe0) >> 5)) + '@';
169 edid_vendor[2] = (edid->mfg_id[1] & 0x1f) + '@';
171 return !strncmp(edid_vendor, vendor, 3);
175 * edid_get_quirks - return quirk flags for a given EDID
176 * @edid: EDID to process
178 * This tells subsequent routines what fixes they need to apply.
180 static u32 edid_get_quirks(struct edid *edid)
182 struct edid_quirk *quirk;
185 for (i = 0; i < ARRAY_SIZE(edid_quirk_list); i++) {
186 quirk = &edid_quirk_list[i];
188 if (edid_vendor(edid, quirk->vendor) &&
189 (EDID_PRODUCT_ID(edid) == quirk->product_id))
190 return quirk->quirks;
196 #define MODE_SIZE(m) ((m)->hdisplay * (m)->vdisplay)
197 #define MODE_REFRESH_DIFF(m,r) (abs((m)->vrefresh - target_refresh))
201 * edid_fixup_preferred - set preferred modes based on quirk list
202 * @connector: has mode list to fix up
203 * @quirks: quirks list
205 * Walk the mode list for @connector, clearing the preferred status
206 * on existing modes and setting it anew for the right mode ala @quirks.
208 static void edid_fixup_preferred(struct drm_connector *connector,
211 struct drm_display_mode *t, *cur_mode, *preferred_mode;
212 int target_refresh = 0;
214 if (list_empty(&connector->probed_modes))
217 if (quirks & EDID_QUIRK_PREFER_LARGE_60)
219 if (quirks & EDID_QUIRK_PREFER_LARGE_75)
222 preferred_mode = list_first_entry(&connector->probed_modes,
223 struct drm_display_mode, head);
225 list_for_each_entry_safe(cur_mode, t, &connector->probed_modes, head) {
226 cur_mode->type &= ~DRM_MODE_TYPE_PREFERRED;
228 if (cur_mode == preferred_mode)
231 /* Largest mode is preferred */
232 if (MODE_SIZE(cur_mode) > MODE_SIZE(preferred_mode))
233 preferred_mode = cur_mode;
235 /* At a given size, try to get closest to target refresh */
236 if ((MODE_SIZE(cur_mode) == MODE_SIZE(preferred_mode)) &&
237 MODE_REFRESH_DIFF(cur_mode, target_refresh) <
238 MODE_REFRESH_DIFF(preferred_mode, target_refresh)) {
239 preferred_mode = cur_mode;
243 preferred_mode->type |= DRM_MODE_TYPE_PREFERRED;
247 * Add the Autogenerated from the DMT spec.
248 * This table is copied from xfree86/modes/xf86EdidModes.c.
249 * But the mode with Reduced blank feature is deleted.
251 static struct drm_display_mode drm_dmt_modes[] = {
253 { DRM_MODE("640x350", DRM_MODE_TYPE_DRIVER, 31500, 640, 672,
254 736, 832, 0, 350, 382, 385, 445, 0,
255 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC) },
257 { DRM_MODE("640x400", DRM_MODE_TYPE_DRIVER, 31500, 640, 672,
258 736, 832, 0, 400, 401, 404, 445, 0,
259 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
261 { DRM_MODE("720x400", DRM_MODE_TYPE_DRIVER, 35500, 720, 756,
262 828, 936, 0, 400, 401, 404, 446, 0,
263 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
265 { DRM_MODE("640x480", DRM_MODE_TYPE_DRIVER, 25175, 640, 656,
266 752, 800, 0, 480, 489, 492, 525, 0,
267 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC) },
269 { DRM_MODE("640x480", DRM_MODE_TYPE_DRIVER, 31500, 640, 664,
270 704, 832, 0, 480, 489, 492, 520, 0,
271 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC) },
273 { DRM_MODE("640x480", DRM_MODE_TYPE_DRIVER, 31500, 640, 656,
274 720, 840, 0, 480, 481, 484, 500, 0,
275 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC) },
277 { DRM_MODE("640x480", DRM_MODE_TYPE_DRIVER, 36000, 640, 696,
278 752, 832, 0, 480, 481, 484, 509, 0,
279 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC) },
281 { DRM_MODE("800x600", DRM_MODE_TYPE_DRIVER, 36000, 800, 824,
282 896, 1024, 0, 600, 601, 603, 625, 0,
283 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
285 { DRM_MODE("800x600", DRM_MODE_TYPE_DRIVER, 40000, 800, 840,
286 968, 1056, 0, 600, 601, 605, 628, 0,
287 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
289 { DRM_MODE("800x600", DRM_MODE_TYPE_DRIVER, 50000, 800, 856,
290 976, 1040, 0, 600, 637, 643, 666, 0,
291 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
293 { DRM_MODE("800x600", DRM_MODE_TYPE_DRIVER, 49500, 800, 816,
294 896, 1056, 0, 600, 601, 604, 625, 0,
295 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
297 { DRM_MODE("800x600", DRM_MODE_TYPE_DRIVER, 56250, 800, 832,
298 896, 1048, 0, 600, 601, 604, 631, 0,
299 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
301 { DRM_MODE("848x480", DRM_MODE_TYPE_DRIVER, 33750, 848, 864,
302 976, 1088, 0, 480, 486, 494, 517, 0,
303 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
304 /* 1024x768@43Hz, interlace */
305 { DRM_MODE("1024x768", DRM_MODE_TYPE_DRIVER, 44900, 1024, 1032,
306 1208, 1264, 0, 768, 768, 772, 817, 0,
307 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC |
308 DRM_MODE_FLAG_INTERLACE) },
310 { DRM_MODE("1024x768", DRM_MODE_TYPE_DRIVER, 65000, 1024, 1048,
311 1184, 1344, 0, 768, 771, 777, 806, 0,
312 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC) },
314 { DRM_MODE("1024x768", DRM_MODE_TYPE_DRIVER, 75000, 1024, 1048,
315 1184, 1328, 0, 768, 771, 777, 806, 0,
316 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC) },
318 { DRM_MODE("1024x768", DRM_MODE_TYPE_DRIVER, 78750, 1024, 1040,
319 1136, 1312, 0, 768, 769, 772, 800, 0,
320 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
322 { DRM_MODE("1024x768", DRM_MODE_TYPE_DRIVER, 94500, 1024, 1072,
323 1072, 1376, 0, 768, 769, 772, 808, 0,
324 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
326 { DRM_MODE("1152x864", DRM_MODE_TYPE_DRIVER, 108000, 1152, 1216,
327 1344, 1600, 0, 864, 865, 868, 900, 0,
328 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
330 { DRM_MODE("1280x768", DRM_MODE_TYPE_DRIVER, 79500, 1280, 1344,
331 1472, 1664, 0, 768, 771, 778, 798, 0,
332 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
334 { DRM_MODE("1280x768", DRM_MODE_TYPE_DRIVER, 102250, 1280, 1360,
335 1488, 1696, 0, 768, 771, 778, 805, 0,
336 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC) },
338 { DRM_MODE("1280x768", DRM_MODE_TYPE_DRIVER, 117500, 1280, 1360,
339 1496, 1712, 0, 768, 771, 778, 809, 0,
340 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
342 { DRM_MODE("1280x800", DRM_MODE_TYPE_DRIVER, 83500, 1280, 1352,
343 1480, 1680, 0, 800, 803, 809, 831, 0,
344 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC) },
346 { DRM_MODE("1280x800", DRM_MODE_TYPE_DRIVER, 106500, 1280, 1360,
347 1488, 1696, 0, 800, 803, 809, 838, 0,
348 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
350 { DRM_MODE("1280x800", DRM_MODE_TYPE_DRIVER, 122500, 1280, 1360,
351 1496, 1712, 0, 800, 803, 809, 843, 0,
352 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
354 { DRM_MODE("1280x960", DRM_MODE_TYPE_DRIVER, 108000, 1280, 1376,
355 1488, 1800, 0, 960, 961, 964, 1000, 0,
356 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
358 { DRM_MODE("1280x960", DRM_MODE_TYPE_DRIVER, 148500, 1280, 1344,
359 1504, 1728, 0, 960, 961, 964, 1011, 0,
360 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
362 { DRM_MODE("1280x1024", DRM_MODE_TYPE_DRIVER, 108000, 1280, 1328,
363 1440, 1688, 0, 1024, 1025, 1028, 1066, 0,
364 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
366 { DRM_MODE("1280x1024", DRM_MODE_TYPE_DRIVER, 135000, 1280, 1296,
367 1440, 1688, 0, 1024, 1025, 1028, 1066, 0,
368 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
370 { DRM_MODE("1280x1024", DRM_MODE_TYPE_DRIVER, 157500, 1280, 1344,
371 1504, 1728, 0, 1024, 1025, 1028, 1072, 0,
372 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
374 { DRM_MODE("1360x768", DRM_MODE_TYPE_DRIVER, 85500, 1360, 1424,
375 1536, 1792, 0, 768, 771, 777, 795, 0,
376 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
378 { DRM_MODE("1400x1050", DRM_MODE_TYPE_DRIVER, 121750, 1400, 1488,
379 1632, 1864, 0, 1050, 1053, 1057, 1089, 0,
380 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
382 { DRM_MODE("1400x1050", DRM_MODE_TYPE_DRIVER, 156000, 1400, 1504,
383 1648, 1896, 0, 1050, 1053, 1057, 1099, 0,
384 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
386 { DRM_MODE("1400x1050", DRM_MODE_TYPE_DRIVER, 179500, 1400, 1504,
387 1656, 1912, 0, 1050, 1053, 1057, 1105, 0,
388 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
390 { DRM_MODE("1440x900", DRM_MODE_TYPE_DRIVER, 106500, 1440, 1520,
391 1672, 1904, 0, 900, 903, 909, 934, 0,
392 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
394 { DRM_MODE("1440x900", DRM_MODE_TYPE_DRIVER, 136750, 1440, 1536,
395 1688, 1936, 0, 900, 903, 909, 942, 0,
396 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
398 { DRM_MODE("1440x900", DRM_MODE_TYPE_DRIVER, 157000, 1440, 1544,
399 1696, 1952, 0, 900, 903, 909, 948, 0,
400 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
402 { DRM_MODE("1600x1200", DRM_MODE_TYPE_DRIVER, 162000, 1600, 1664,
403 1856, 2160, 0, 1200, 1201, 1204, 1250, 0,
404 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
406 { DRM_MODE("1600x1200", DRM_MODE_TYPE_DRIVER, 175500, 1600, 1664,
407 1856, 2160, 0, 1200, 1201, 1204, 1250, 0,
408 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
410 { DRM_MODE("1600x1200", DRM_MODE_TYPE_DRIVER, 189000, 1600, 1664,
411 1856, 2160, 0, 1200, 1201, 1204, 1250, 0,
412 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
414 { DRM_MODE("1600x1200", DRM_MODE_TYPE_DRIVER, 2025000, 1600, 1664,
415 1856, 2160, 0, 1200, 1201, 1204, 1250, 0,
416 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
418 { DRM_MODE("1600x1200", DRM_MODE_TYPE_DRIVER, 229500, 1600, 1664,
419 1856, 2160, 0, 1200, 1201, 1204, 1250, 0,
420 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
422 { DRM_MODE("1680x1050", DRM_MODE_TYPE_DRIVER, 146250, 1680, 1784,
423 1960, 2240, 0, 1050, 1053, 1059, 1089, 0,
424 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
426 { DRM_MODE("1680x1050", DRM_MODE_TYPE_DRIVER, 187000, 1680, 1800,
427 1976, 2272, 0, 1050, 1053, 1059, 1099, 0,
428 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
430 { DRM_MODE("1680x1050", DRM_MODE_TYPE_DRIVER, 214750, 1680, 1808,
431 1984, 2288, 0, 1050, 1053, 1059, 1105, 0,
432 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
434 { DRM_MODE("1792x1344", DRM_MODE_TYPE_DRIVER, 204750, 1792, 1920,
435 2120, 2448, 0, 1344, 1345, 1348, 1394, 0,
436 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
438 { DRM_MODE("1792x1344", DRM_MODE_TYPE_DRIVER, 261000, 1792, 1888,
439 2104, 2456, 0, 1344, 1345, 1348, 1417, 0,
440 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
442 { DRM_MODE("1856x1392", DRM_MODE_TYPE_DRIVER, 218250, 1856, 1952,
443 2176, 2528, 0, 1392, 1393, 1396, 1439, 0,
444 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
446 { DRM_MODE("1856x1392", DRM_MODE_TYPE_DRIVER, 288000, 1856, 1984,
447 2208, 2560, 0, 1392, 1395, 1399, 1500, 0,
448 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
450 { DRM_MODE("1920x1200", DRM_MODE_TYPE_DRIVER, 193250, 1920, 2056,
451 2256, 2592, 0, 1200, 1203, 1209, 1245, 0,
452 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
454 { DRM_MODE("1920x1200", DRM_MODE_TYPE_DRIVER, 245250, 1920, 2056,
455 2264, 2608, 0, 1200, 1203, 1209, 1255, 0,
456 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
458 { DRM_MODE("1920x1200", DRM_MODE_TYPE_DRIVER, 281250, 1920, 2064,
459 2272, 2624, 0, 1200, 1203, 1209, 1262, 0,
460 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
462 { DRM_MODE("1920x1440", DRM_MODE_TYPE_DRIVER, 234000, 1920, 2048,
463 2256, 2600, 0, 1440, 1441, 1444, 1500, 0,
464 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
466 { DRM_MODE("1920x1440", DRM_MODE_TYPE_DRIVER, 297000, 1920, 2064,
467 2288, 2640, 0, 1440, 1441, 1444, 1500, 0,
468 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
470 { DRM_MODE("2560x1600", DRM_MODE_TYPE_DRIVER, 348500, 2560, 2752,
471 3032, 3504, 0, 1600, 1603, 1609, 1658, 0,
472 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
474 { DRM_MODE("2560x1600", DRM_MODE_TYPE_DRIVER, 443250, 2560, 2768,
475 3048, 3536, 0, 1600, 1603, 1609, 1672, 0,
476 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
478 { DRM_MODE("2560x1600", DRM_MODE_TYPE_DRIVER, 505250, 2560, 2768,
479 3048, 3536, 0, 1600, 1603, 1609, 1682, 0,
480 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
484 * drm_mode_std - convert standard mode info (width, height, refresh) into mode
485 * @t: standard timing params
486 * @timing_level: standard timing level
488 * Take the standard timing params (in this case width, aspect, and refresh)
489 * and convert them into a real mode using CVT/GTF/DMT.
491 * Punts for now, but should eventually use the FB layer's CVT based mode
494 struct drm_display_mode *drm_mode_std(struct drm_device *dev,
495 struct std_timing *t,
498 struct drm_display_mode *mode;
501 unsigned aspect_ratio = (t->vfreq_aspect & EDID_TIMING_ASPECT_MASK)
502 >> EDID_TIMING_ASPECT_SHIFT;
503 unsigned vfreq = (t->vfreq_aspect & EDID_TIMING_VFREQ_MASK)
504 >> EDID_TIMING_VFREQ_SHIFT;
506 /* According to the EDID spec, the hdisplay = hsize * 8 + 248 */
507 hsize = t->hsize * 8 + 248;
508 /* vrefresh_rate = vfreq + 60 */
509 vrefresh_rate = vfreq + 60;
510 /* the vdisplay is calculated based on the aspect ratio */
511 if (aspect_ratio == 0)
512 vsize = (hsize * 10) / 16;
513 else if (aspect_ratio == 1)
514 vsize = (hsize * 3) / 4;
515 else if (aspect_ratio == 2)
516 vsize = (hsize * 4) / 5;
518 vsize = (hsize * 9) / 16;
521 switch (timing_level) {
523 mode = drm_mode_create(dev);
525 mode->hdisplay = hsize;
526 mode->vdisplay = vsize;
527 drm_mode_set_name(mode);
531 mode = drm_gtf_mode(dev, hsize, vsize, vrefresh_rate, 0, 0);
534 mode = drm_cvt_mode(dev, hsize, vsize, vrefresh_rate, 0, 0);
541 * drm_mode_detailed - create a new mode from an EDID detailed timing section
542 * @dev: DRM device (needed to create new mode)
544 * @timing: EDID detailed timing info
545 * @quirks: quirks to apply
547 * An EDID detailed timing block contains enough info for us to create and
548 * return a new struct drm_display_mode.
550 static struct drm_display_mode *drm_mode_detailed(struct drm_device *dev,
552 struct detailed_timing *timing,
555 struct drm_display_mode *mode;
556 struct detailed_pixel_timing *pt = &timing->data.pixel_data;
557 unsigned hactive = (pt->hactive_hblank_hi & 0xf0) << 4 | pt->hactive_lo;
558 unsigned vactive = (pt->vactive_vblank_hi & 0xf0) << 4 | pt->vactive_lo;
559 unsigned hblank = (pt->hactive_hblank_hi & 0xf) << 8 | pt->hblank_lo;
560 unsigned vblank = (pt->vactive_vblank_hi & 0xf) << 8 | pt->vblank_lo;
561 unsigned hsync_offset = (pt->hsync_vsync_offset_pulse_width_hi & 0xc0) << 2 | pt->hsync_offset_lo;
562 unsigned hsync_pulse_width = (pt->hsync_vsync_offset_pulse_width_hi & 0x30) << 4 | pt->hsync_pulse_width_lo;
563 unsigned vsync_offset = (pt->hsync_vsync_offset_pulse_width_hi & 0xc) >> 2 | pt->vsync_offset_pulse_width_lo >> 4;
564 unsigned vsync_pulse_width = (pt->hsync_vsync_offset_pulse_width_hi & 0x3) << 4 | (pt->vsync_offset_pulse_width_lo & 0xf);
566 /* ignore tiny modes */
567 if (hactive < 64 || vactive < 64)
570 if (pt->misc & DRM_EDID_PT_STEREO) {
571 printk(KERN_WARNING "stereo mode not supported\n");
574 if (!(pt->misc & DRM_EDID_PT_SEPARATE_SYNC)) {
575 printk(KERN_WARNING "integrated sync not supported\n");
579 mode = drm_mode_create(dev);
583 mode->type = DRM_MODE_TYPE_DRIVER;
585 if (quirks & EDID_QUIRK_135_CLOCK_TOO_HIGH)
586 timing->pixel_clock = cpu_to_le16(1088);
588 mode->clock = le16_to_cpu(timing->pixel_clock) * 10;
590 mode->hdisplay = hactive;
591 mode->hsync_start = mode->hdisplay + hsync_offset;
592 mode->hsync_end = mode->hsync_start + hsync_pulse_width;
593 mode->htotal = mode->hdisplay + hblank;
595 mode->vdisplay = vactive;
596 mode->vsync_start = mode->vdisplay + vsync_offset;
597 mode->vsync_end = mode->vsync_start + vsync_pulse_width;
598 mode->vtotal = mode->vdisplay + vblank;
600 drm_mode_set_name(mode);
602 if (pt->misc & DRM_EDID_PT_INTERLACED)
603 mode->flags |= DRM_MODE_FLAG_INTERLACE;
605 if (quirks & EDID_QUIRK_DETAILED_SYNC_PP) {
606 pt->misc |= DRM_EDID_PT_HSYNC_POSITIVE | DRM_EDID_PT_VSYNC_POSITIVE;
609 mode->flags |= (pt->misc & DRM_EDID_PT_HSYNC_POSITIVE) ?
610 DRM_MODE_FLAG_PHSYNC : DRM_MODE_FLAG_NHSYNC;
611 mode->flags |= (pt->misc & DRM_EDID_PT_VSYNC_POSITIVE) ?
612 DRM_MODE_FLAG_PVSYNC : DRM_MODE_FLAG_NVSYNC;
614 mode->width_mm = pt->width_mm_lo | (pt->width_height_mm_hi & 0xf0) << 4;
615 mode->height_mm = pt->height_mm_lo | (pt->width_height_mm_hi & 0xf) << 8;
617 if (quirks & EDID_QUIRK_DETAILED_IN_CM) {
618 mode->width_mm *= 10;
619 mode->height_mm *= 10;
622 if (quirks & EDID_QUIRK_DETAILED_USE_MAXIMUM_SIZE) {
623 mode->width_mm = edid->width_cm * 10;
624 mode->height_mm = edid->height_cm * 10;
631 * Detailed mode info for the EDID "established modes" data to use.
633 static struct drm_display_mode edid_est_modes[] = {
634 { DRM_MODE("800x600", DRM_MODE_TYPE_DRIVER, 40000, 800, 840,
635 968, 1056, 0, 600, 601, 605, 628, 0,
636 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) }, /* 800x600@60Hz */
637 { DRM_MODE("800x600", DRM_MODE_TYPE_DRIVER, 36000, 800, 824,
638 896, 1024, 0, 600, 601, 603, 625, 0,
639 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) }, /* 800x600@56Hz */
640 { DRM_MODE("640x480", DRM_MODE_TYPE_DRIVER, 31500, 640, 656,
641 720, 840, 0, 480, 481, 484, 500, 0,
642 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC) }, /* 640x480@75Hz */
643 { DRM_MODE("640x480", DRM_MODE_TYPE_DRIVER, 31500, 640, 664,
644 704, 832, 0, 480, 489, 491, 520, 0,
645 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC) }, /* 640x480@72Hz */
646 { DRM_MODE("640x480", DRM_MODE_TYPE_DRIVER, 30240, 640, 704,
647 768, 864, 0, 480, 483, 486, 525, 0,
648 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC) }, /* 640x480@67Hz */
649 { DRM_MODE("640x480", DRM_MODE_TYPE_DRIVER, 25200, 640, 656,
650 752, 800, 0, 480, 490, 492, 525, 0,
651 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC) }, /* 640x480@60Hz */
652 { DRM_MODE("720x400", DRM_MODE_TYPE_DRIVER, 35500, 720, 738,
653 846, 900, 0, 400, 421, 423, 449, 0,
654 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC) }, /* 720x400@88Hz */
655 { DRM_MODE("720x400", DRM_MODE_TYPE_DRIVER, 28320, 720, 738,
656 846, 900, 0, 400, 412, 414, 449, 0,
657 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) }, /* 720x400@70Hz */
658 { DRM_MODE("1280x1024", DRM_MODE_TYPE_DRIVER, 135000, 1280, 1296,
659 1440, 1688, 0, 1024, 1025, 1028, 1066, 0,
660 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) }, /* 1280x1024@75Hz */
661 { DRM_MODE("1024x768", DRM_MODE_TYPE_DRIVER, 78800, 1024, 1040,
662 1136, 1312, 0, 768, 769, 772, 800, 0,
663 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) }, /* 1024x768@75Hz */
664 { DRM_MODE("1024x768", DRM_MODE_TYPE_DRIVER, 75000, 1024, 1048,
665 1184, 1328, 0, 768, 771, 777, 806, 0,
666 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC) }, /* 1024x768@70Hz */
667 { DRM_MODE("1024x768", DRM_MODE_TYPE_DRIVER, 65000, 1024, 1048,
668 1184, 1344, 0, 768, 771, 777, 806, 0,
669 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC) }, /* 1024x768@60Hz */
670 { DRM_MODE("1024x768", DRM_MODE_TYPE_DRIVER,44900, 1024, 1032,
671 1208, 1264, 0, 768, 768, 776, 817, 0,
672 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC | DRM_MODE_FLAG_INTERLACE) }, /* 1024x768@43Hz */
673 { DRM_MODE("832x624", DRM_MODE_TYPE_DRIVER, 57284, 832, 864,
674 928, 1152, 0, 624, 625, 628, 667, 0,
675 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC) }, /* 832x624@75Hz */
676 { DRM_MODE("800x600", DRM_MODE_TYPE_DRIVER, 49500, 800, 816,
677 896, 1056, 0, 600, 601, 604, 625, 0,
678 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) }, /* 800x600@75Hz */
679 { DRM_MODE("800x600", DRM_MODE_TYPE_DRIVER, 50000, 800, 856,
680 976, 1040, 0, 600, 637, 643, 666, 0,
681 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) }, /* 800x600@72Hz */
682 { DRM_MODE("1152x864", DRM_MODE_TYPE_DRIVER, 108000, 1152, 1216,
683 1344, 1600, 0, 864, 865, 868, 900, 0,
684 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) }, /* 1152x864@75Hz */
687 #define EDID_EST_TIMINGS 16
688 #define EDID_STD_TIMINGS 8
689 #define EDID_DETAILED_TIMINGS 4
692 * add_established_modes - get est. modes from EDID and add them
693 * @edid: EDID block to scan
695 * Each EDID block contains a bitmap of the supported "established modes" list
696 * (defined above). Tease them out and add them to the global modes list.
698 static int add_established_modes(struct drm_connector *connector, struct edid *edid)
700 struct drm_device *dev = connector->dev;
701 unsigned long est_bits = edid->established_timings.t1 |
702 (edid->established_timings.t2 << 8) |
703 ((edid->established_timings.mfg_rsvd & 0x80) << 9);
706 for (i = 0; i <= EDID_EST_TIMINGS; i++)
707 if (est_bits & (1<<i)) {
708 struct drm_display_mode *newmode;
709 newmode = drm_mode_duplicate(dev, &edid_est_modes[i]);
711 drm_mode_probed_add(connector, newmode);
719 * stanard_timing_level - get std. timing level(CVT/GTF/DMT)
720 * @edid: EDID block to scan
722 static int standard_timing_level(struct edid *edid)
724 if (edid->revision >= 2) {
725 if (edid->revision >= 4 && (edid->features & DRM_EDID_FEATURE_DEFAULT_GTF))
733 * add_standard_modes - get std. modes from EDID and add them
734 * @edid: EDID block to scan
736 * Standard modes can be calculated using the CVT standard. Grab them from
737 * @edid, calculate them, and add them to the list.
739 static int add_standard_modes(struct drm_connector *connector, struct edid *edid)
741 struct drm_device *dev = connector->dev;
745 timing_level = standard_timing_level(edid);
747 for (i = 0; i < EDID_STD_TIMINGS; i++) {
748 struct std_timing *t = &edid->standard_timings[i];
749 struct drm_display_mode *newmode;
751 /* If std timings bytes are 1, 1 it's empty */
752 if (t->hsize == 1 && t->vfreq_aspect == 1)
755 newmode = drm_mode_std(dev, &edid->standard_timings[i],
758 drm_mode_probed_add(connector, newmode);
767 * add_detailed_modes - get detailed mode info from EDID data
768 * @connector: attached connector
769 * @edid: EDID block to scan
770 * @quirks: quirks to apply
772 * Some of the detailed timing sections may contain mode information. Grab
773 * it and add it to the list.
775 static int add_detailed_info(struct drm_connector *connector,
776 struct edid *edid, u32 quirks)
778 struct drm_device *dev = connector->dev;
782 timing_level = standard_timing_level(edid);
784 for (i = 0; i < EDID_DETAILED_TIMINGS; i++) {
785 struct detailed_timing *timing = &edid->detailed_timings[i];
786 struct detailed_non_pixel *data = &timing->data.other_data;
787 struct drm_display_mode *newmode;
789 /* X server check is version 1.1 or higher */
790 if (edid->version == 1 && edid->revision >= 1 &&
791 !timing->pixel_clock) {
792 /* Other timing or info */
793 switch (data->type) {
794 case EDID_DETAIL_MONITOR_SERIAL:
796 case EDID_DETAIL_MONITOR_STRING:
798 case EDID_DETAIL_MONITOR_RANGE:
799 /* Get monitor range data */
801 case EDID_DETAIL_MONITOR_NAME:
803 case EDID_DETAIL_MONITOR_CPDATA:
805 case EDID_DETAIL_STD_MODES:
806 /* Five modes per detailed section */
807 for (j = 0; j < 5; i++) {
808 struct std_timing *std;
809 struct drm_display_mode *newmode;
811 std = &data->data.timings[j];
812 newmode = drm_mode_std(dev, std,
815 drm_mode_probed_add(connector, newmode);
824 newmode = drm_mode_detailed(dev, edid, timing, quirks);
828 /* First detailed mode is preferred */
829 if (i == 0 && (edid->features & DRM_EDID_FEATURE_PREFERRED_TIMING))
830 newmode->type |= DRM_MODE_TYPE_PREFERRED;
831 drm_mode_probed_add(connector, newmode);
840 * add_detailed_mode_eedid - get detailed mode info from addtional timing
842 * @connector: attached connector
843 * @edid: EDID block to scan(It is only to get addtional timing EDID block)
844 * @quirks: quirks to apply
846 * Some of the detailed timing sections may contain mode information. Grab
847 * it and add it to the list.
849 static int add_detailed_info_eedid(struct drm_connector *connector,
850 struct edid *edid, u32 quirks)
852 struct drm_device *dev = connector->dev;
854 char *edid_ext = NULL;
855 struct detailed_timing *timing;
856 struct detailed_non_pixel *data;
857 struct drm_display_mode *newmode;
859 int start_offset, end_offset;
862 if (edid->version == 1 && edid->revision < 3) {
863 /* If the EDID version is less than 1.3, there is no
868 if (!edid->extensions) {
869 /* if there is no extension EDID, it is unnecessary to
870 * parse the E-EDID to get detailed info
875 /* Chose real EDID extension number */
876 edid_ext_num = edid->extensions > MAX_EDID_EXT_NUM ?
877 MAX_EDID_EXT_NUM : edid->extensions;
879 /* Find CEA extension */
880 for (i = 0; i < edid_ext_num; i++) {
881 edid_ext = (char *)edid + EDID_LENGTH * (i + 1);
882 /* This block is CEA extension */
883 if (edid_ext[0] == 0x02)
887 if (i == edid_ext_num) {
888 /* if there is no additional timing EDID block, return */
892 /* Get the start offset of detailed timing block */
893 start_offset = edid_ext[2];
894 if (start_offset == 0) {
895 /* If the start_offset is zero, it means that neither detailed
896 * info nor data block exist. In such case it is also
897 * unnecessary to parse the detailed timing info.
902 timing_level = standard_timing_level(edid);
903 end_offset = EDID_LENGTH;
904 end_offset -= sizeof(struct detailed_timing);
905 for (i = start_offset; i < end_offset;
906 i += sizeof(struct detailed_timing)) {
907 timing = (struct detailed_timing *)(edid_ext + i);
908 data = &timing->data.other_data;
909 /* Detailed mode timing */
910 if (timing->pixel_clock) {
911 newmode = drm_mode_detailed(dev, edid, timing, quirks);
915 drm_mode_probed_add(connector, newmode);
921 /* Other timing or info */
922 switch (data->type) {
923 case EDID_DETAIL_MONITOR_SERIAL:
925 case EDID_DETAIL_MONITOR_STRING:
927 case EDID_DETAIL_MONITOR_RANGE:
928 /* Get monitor range data */
930 case EDID_DETAIL_MONITOR_NAME:
932 case EDID_DETAIL_MONITOR_CPDATA:
934 case EDID_DETAIL_STD_MODES:
935 /* Five modes per detailed section */
936 for (j = 0; j < 5; i++) {
937 struct std_timing *std;
938 struct drm_display_mode *newmode;
940 std = &data->data.timings[j];
941 newmode = drm_mode_std(dev, std, timing_level);
943 drm_mode_probed_add(connector, newmode);
956 #define DDC_ADDR 0x50
958 * Get EDID information via I2C.
960 * \param adapter : i2c device adaptor
961 * \param buf : EDID data buffer to be filled
962 * \param len : EDID data buffer length
963 * \return 0 on success or -1 on failure.
965 * Try to fetch EDID information by calling i2c driver function.
967 int drm_do_probe_ddc_edid(struct i2c_adapter *adapter,
968 unsigned char *buf, int len)
970 unsigned char start = 0x0;
971 struct i2c_msg msgs[] = {
985 if (i2c_transfer(adapter, msgs, 2) == 2)
988 dev_info(&adapter->dev, "unable to read EDID block.\n");
991 EXPORT_SYMBOL(drm_do_probe_ddc_edid);
993 static int drm_ddc_read_edid(struct drm_connector *connector,
994 struct i2c_adapter *adapter,
999 ret = drm_do_probe_ddc_edid(adapter, buf, len);
1001 dev_info(&connector->dev->pdev->dev, "%s: no EDID data\n",
1002 drm_get_connector_name(connector));
1005 if (!edid_is_valid((struct edid *)buf)) {
1006 dev_warn(&connector->dev->pdev->dev, "%s: EDID invalid.\n",
1007 drm_get_connector_name(connector));
1015 * drm_get_edid - get EDID data, if available
1016 * @connector: connector we're probing
1017 * @adapter: i2c adapter to use for DDC
1019 * Poke the given connector's i2c channel to grab EDID data if possible.
1021 * Return edid data or NULL if we couldn't find any.
1023 struct edid *drm_get_edid(struct drm_connector *connector,
1024 struct i2c_adapter *adapter)
1029 edid = kmalloc(EDID_LENGTH * (MAX_EDID_EXT_NUM + 1),
1032 dev_warn(&connector->dev->pdev->dev,
1033 "Failed to allocate EDID\n");
1037 /* Read first EDID block */
1038 ret = drm_ddc_read_edid(connector, adapter,
1039 (unsigned char *)edid, EDID_LENGTH);
1043 /* There are EDID extensions to be read */
1044 if (edid->extensions != 0) {
1045 int edid_ext_num = edid->extensions;
1047 if (edid_ext_num > MAX_EDID_EXT_NUM) {
1048 dev_warn(&connector->dev->pdev->dev,
1049 "The number of extension(%d) is "
1050 "over max (%d), actually read number (%d)\n",
1051 edid_ext_num, MAX_EDID_EXT_NUM,
1053 /* Reset EDID extension number to be read */
1054 edid_ext_num = MAX_EDID_EXT_NUM;
1056 /* Read EDID including extensions too */
1057 ret = drm_ddc_read_edid(connector, adapter, (char *)edid,
1058 EDID_LENGTH * (edid_ext_num + 1));
1064 connector->display_info.raw_edid = (char *)edid;
1074 EXPORT_SYMBOL(drm_get_edid);
1076 #define HDMI_IDENTIFIER 0x000C03
1077 #define VENDOR_BLOCK 0x03
1079 * drm_detect_hdmi_monitor - detect whether monitor is hdmi.
1080 * @edid: monitor EDID information
1082 * Parse the CEA extension according to CEA-861-B.
1083 * Return true if HDMI, false if not or unknown.
1085 bool drm_detect_hdmi_monitor(struct edid *edid)
1087 char *edid_ext = NULL;
1088 int i, hdmi_id, edid_ext_num;
1089 int start_offset, end_offset;
1090 bool is_hdmi = false;
1092 /* No EDID or EDID extensions */
1093 if (edid == NULL || edid->extensions == 0)
1096 /* Chose real EDID extension number */
1097 edid_ext_num = edid->extensions > MAX_EDID_EXT_NUM ?
1098 MAX_EDID_EXT_NUM : edid->extensions;
1100 /* Find CEA extension */
1101 for (i = 0; i < edid_ext_num; i++) {
1102 edid_ext = (char *)edid + EDID_LENGTH * (i + 1);
1103 /* This block is CEA extension */
1104 if (edid_ext[0] == 0x02)
1108 if (i == edid_ext_num)
1111 /* Data block offset in CEA extension block */
1113 end_offset = edid_ext[2];
1116 * Because HDMI identifier is in Vendor Specific Block,
1117 * search it from all data blocks of CEA extension.
1119 for (i = start_offset; i < end_offset;
1120 /* Increased by data block len */
1121 i += ((edid_ext[i] & 0x1f) + 1)) {
1122 /* Find vendor specific block */
1123 if ((edid_ext[i] >> 5) == VENDOR_BLOCK) {
1124 hdmi_id = edid_ext[i + 1] | (edid_ext[i + 2] << 8) |
1125 edid_ext[i + 3] << 16;
1126 /* Find HDMI identifier */
1127 if (hdmi_id == HDMI_IDENTIFIER)
1136 EXPORT_SYMBOL(drm_detect_hdmi_monitor);
1139 * drm_add_edid_modes - add modes from EDID data, if available
1140 * @connector: connector we're probing
1143 * Add the specified modes to the connector's mode list.
1145 * Return number of modes added or 0 if we couldn't find any.
1147 int drm_add_edid_modes(struct drm_connector *connector, struct edid *edid)
1155 if (!edid_is_valid(edid)) {
1156 dev_warn(&connector->dev->pdev->dev, "%s: EDID invalid.\n",
1157 drm_get_connector_name(connector));
1161 quirks = edid_get_quirks(edid);
1163 num_modes += add_established_modes(connector, edid);
1164 num_modes += add_standard_modes(connector, edid);
1165 num_modes += add_detailed_info(connector, edid, quirks);
1166 num_modes += add_detailed_info_eedid(connector, edid, quirks);
1168 if (quirks & (EDID_QUIRK_PREFER_LARGE_60 | EDID_QUIRK_PREFER_LARGE_75))
1169 edid_fixup_preferred(connector, quirks);
1171 connector->display_info.serration_vsync = (edid->input & DRM_EDID_INPUT_SERRATION_VSYNC) ? 1 : 0;
1172 connector->display_info.sync_on_green = (edid->input & DRM_EDID_INPUT_SYNC_ON_GREEN) ? 1 : 0;
1173 connector->display_info.composite_sync = (edid->input & DRM_EDID_INPUT_COMPOSITE_SYNC) ? 1 : 0;
1174 connector->display_info.separate_syncs = (edid->input & DRM_EDID_INPUT_SEPARATE_SYNCS) ? 1 : 0;
1175 connector->display_info.blank_to_black = (edid->input & DRM_EDID_INPUT_BLANK_TO_BLACK) ? 1 : 0;
1176 connector->display_info.video_level = (edid->input & DRM_EDID_INPUT_VIDEO_LEVEL) >> 5;
1177 connector->display_info.digital = (edid->input & DRM_EDID_INPUT_DIGITAL) ? 1 : 0;
1178 connector->display_info.width_mm = edid->width_cm * 10;
1179 connector->display_info.height_mm = edid->height_cm * 10;
1180 connector->display_info.gamma = edid->gamma;
1181 connector->display_info.gtf_supported = (edid->features & DRM_EDID_FEATURE_DEFAULT_GTF) ? 1 : 0;
1182 connector->display_info.standard_color = (edid->features & DRM_EDID_FEATURE_STANDARD_COLOR) ? 1 : 0;
1183 connector->display_info.display_type = (edid->features & DRM_EDID_FEATURE_DISPLAY_TYPE) >> 3;
1184 connector->display_info.active_off_supported = (edid->features & DRM_EDID_FEATURE_PM_ACTIVE_OFF) ? 1 : 0;
1185 connector->display_info.suspend_supported = (edid->features & DRM_EDID_FEATURE_PM_SUSPEND) ? 1 : 0;
1186 connector->display_info.standby_supported = (edid->features & DRM_EDID_FEATURE_PM_STANDBY) ? 1 : 0;
1187 connector->display_info.gamma = edid->gamma;
1191 EXPORT_SYMBOL(drm_add_edid_modes);