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.
7 * DDC probing routines (drm_ddc_read & drm_do_probe_ddc_edid) originally from
9 * Copyright (C) 2006 Dennis Munsie <dmunsie@cecropia.com>
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:
18 * The above copyright notice and this permission notice (including the
19 * next paragraph) shall be included in all copies or substantial portions
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.
31 #include <sys/cdefs.h>
32 __FBSDID("$FreeBSD$");
34 #include <dev/drm2/drmP.h>
35 #include <dev/drm2/drm_edid.h>
36 #include <dev/drm2/drm_edid_modes.h>
37 #include <dev/iicbus/iic.h>
38 #include <dev/iicbus/iiconf.h>
39 #include "iicbus_if.h"
41 #define version_greater(edid, maj, min) \
42 (((edid)->version > (maj)) || \
43 ((edid)->version == (maj) && (edid)->revision > (min)))
45 #define EDID_EST_TIMINGS 16
46 #define EDID_STD_TIMINGS 8
47 #define EDID_DETAILED_TIMINGS 4
50 * EDID blocks out in the wild have a variety of bugs, try to collect
51 * them here (note that userspace may work around broken monitors first,
52 * but fixes should make their way here so that the kernel "just works"
53 * on as many displays as possible).
56 /* First detailed mode wrong, use largest 60Hz mode */
57 #define EDID_QUIRK_PREFER_LARGE_60 (1 << 0)
58 /* Reported 135MHz pixel clock is too high, needs adjustment */
59 #define EDID_QUIRK_135_CLOCK_TOO_HIGH (1 << 1)
60 /* Prefer the largest mode at 75 Hz */
61 #define EDID_QUIRK_PREFER_LARGE_75 (1 << 2)
62 /* Detail timing is in cm not mm */
63 #define EDID_QUIRK_DETAILED_IN_CM (1 << 3)
64 /* Detailed timing descriptors have bogus size values, so just take the
65 * maximum size and use that.
67 #define EDID_QUIRK_DETAILED_USE_MAXIMUM_SIZE (1 << 4)
68 /* Monitor forgot to set the first detailed is preferred bit. */
69 #define EDID_QUIRK_FIRST_DETAILED_PREFERRED (1 << 5)
70 /* use +hsync +vsync for detailed mode */
71 #define EDID_QUIRK_DETAILED_SYNC_PP (1 << 6)
73 struct detailed_mode_closure {
74 struct drm_connector *connector;
86 static struct edid_quirk {
90 } edid_quirk_list[] = {
92 { "ACR", 44358, EDID_QUIRK_PREFER_LARGE_60 },
94 { "API", 0x7602, EDID_QUIRK_PREFER_LARGE_60 },
96 { "ACR", 2423, EDID_QUIRK_FIRST_DETAILED_PREFERRED },
98 /* Belinea 10 15 55 */
99 { "MAX", 1516, EDID_QUIRK_PREFER_LARGE_60 },
100 { "MAX", 0x77e, EDID_QUIRK_PREFER_LARGE_60 },
102 /* Envision Peripherals, Inc. EN-7100e */
103 { "EPI", 59264, EDID_QUIRK_135_CLOCK_TOO_HIGH },
104 /* Envision EN2028 */
105 { "EPI", 8232, EDID_QUIRK_PREFER_LARGE_60 },
107 /* Funai Electronics PM36B */
108 { "FCM", 13600, EDID_QUIRK_PREFER_LARGE_75 |
109 EDID_QUIRK_DETAILED_IN_CM },
111 /* LG Philips LCD LP154W01-A5 */
112 { "LPL", 0, EDID_QUIRK_DETAILED_USE_MAXIMUM_SIZE },
113 { "LPL", 0x2a00, EDID_QUIRK_DETAILED_USE_MAXIMUM_SIZE },
115 /* Philips 107p5 CRT */
116 { "PHL", 57364, EDID_QUIRK_FIRST_DETAILED_PREFERRED },
119 { "PTS", 765, EDID_QUIRK_FIRST_DETAILED_PREFERRED },
121 /* Samsung SyncMaster 205BW. Note: irony */
122 { "SAM", 541, EDID_QUIRK_DETAILED_SYNC_PP },
123 /* Samsung SyncMaster 22[5-6]BW */
124 { "SAM", 596, EDID_QUIRK_PREFER_LARGE_60 },
125 { "SAM", 638, EDID_QUIRK_PREFER_LARGE_60 },
128 /*** DDC fetch and block validation ***/
130 static const u8 edid_header[] = {
131 0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00
135 * Sanity check the header of the base EDID block. Return 8 if the header
136 * is perfect, down to 0 if it's totally wrong.
138 int drm_edid_header_is_valid(const u8 *raw_edid)
142 for (i = 0; i < sizeof(edid_header); i++)
143 if (raw_edid[i] == edid_header[i])
150 * Sanity check the EDID block (base or extension). Return 0 if the block
151 * doesn't check out, or 1 if it's valid.
154 drm_edid_block_valid(u8 *raw_edid)
158 struct edid *edid = (struct edid *)raw_edid;
160 if (raw_edid[0] == 0x00) {
161 int score = drm_edid_header_is_valid(raw_edid);
163 else if (score >= 6) {
164 DRM_DEBUG("Fixing EDID header, your hardware may be failing\n");
165 memcpy(raw_edid, edid_header, sizeof(edid_header));
171 for (i = 0; i < EDID_LENGTH; i++)
174 DRM_ERROR("EDID checksum is invalid, remainder is %d\n", csum);
176 /* allow CEA to slide through, switches mangle this */
177 if (raw_edid[0] != 0x02)
181 /* per-block-type checks */
182 switch (raw_edid[0]) {
184 if (edid->version != 1) {
185 DRM_ERROR("EDID has major version %d, instead of 1\n", edid->version);
189 if (edid->revision > 4)
190 DRM_DEBUG("EDID minor > 4, assuming backward compatibility\n");
201 DRM_DEBUG_KMS("Raw EDID:\n");
202 if ((drm_debug_flag & DRM_DEBUGBITS_KMS) != 0) {
203 for (i = 0; i < EDID_LENGTH; ) {
204 printf("%02x", raw_edid[i]);
206 if (i % 16 == 0 || i == EDID_LENGTH)
219 * drm_edid_is_valid - sanity check EDID data
222 * Sanity-check an entire EDID record (including extensions)
224 bool drm_edid_is_valid(struct edid *edid)
227 u8 *raw = (u8 *)edid;
232 for (i = 0; i <= edid->extensions; i++)
233 if (!drm_edid_block_valid(raw + i * EDID_LENGTH))
239 #define DDC_ADDR 0x50
240 #define DDC_SEGMENT_ADDR 0x30
242 * Get EDID information via I2C.
244 * \param adapter : i2c device adaptor
245 * \param buf : EDID data buffer to be filled
246 * \param len : EDID data buffer length
247 * \return 0 on success or -1 on failure.
249 * Try to fetch EDID information by calling i2c driver function.
252 drm_do_probe_ddc_edid(device_t adapter, unsigned char *buf,
255 unsigned char start = block * EDID_LENGTH;
256 unsigned char segment = block >> 1;
257 unsigned char xfers = segment ? 3 : 2;
258 int ret, retries = 5;
260 /* The core i2c driver will automatically retry the transfer if the
261 * adapter reports EAGAIN. However, we find that bit-banging transfers
262 * are susceptible to errors under a heavily loaded machine and
263 * generate spurious NAKs and timeouts. Retrying the transfer
264 * of the individual block a few times seems to overcome this.
267 struct iic_msg msgs[] = {
269 .slave = DDC_SEGMENT_ADDR << 1,
274 .slave = DDC_ADDR << 1,
279 .slave = DDC_ADDR << 1,
287 * Avoid sending the segment addr to not upset non-compliant ddc
290 ret = iicbus_transfer(adapter, &msgs[3 - xfers], xfers);
293 DRM_DEBUG_KMS("iicbus_transfer countdown %d error %d\n",
295 } while (ret != 0 && --retries);
297 return (ret == 0 ? 0 : -1);
300 static bool drm_edid_is_zero(u8 *in_edid, int length)
303 u32 *raw_edid = (u32 *)in_edid;
305 for (i = 0; i < length / 4; i++)
306 if (*(raw_edid + i) != 0)
312 drm_do_get_edid(struct drm_connector *connector, device_t adapter)
314 int i, j = 0, valid_extensions = 0;
317 block = malloc(EDID_LENGTH, DRM_MEM_KMS, M_WAITOK | M_ZERO);
319 /* base block fetch */
320 for (i = 0; i < 4; i++) {
321 if (drm_do_probe_ddc_edid(adapter, block, 0, EDID_LENGTH))
323 if (drm_edid_block_valid(block))
325 if (i == 0 && drm_edid_is_zero(block, EDID_LENGTH)) {
326 connector->null_edid_counter++;
333 /* if there's no extensions, we're done */
334 if (block[0x7e] == 0)
337 new = reallocf(block, (block[0x7e] + 1) * EDID_LENGTH, DRM_MEM_KMS,
341 for (j = 1; j <= block[0x7e]; j++) {
342 for (i = 0; i < 4; i++) {
343 if (drm_do_probe_ddc_edid(adapter,
344 block + (valid_extensions + 1) * EDID_LENGTH,
347 if (drm_edid_block_valid(block + (valid_extensions + 1) * EDID_LENGTH)) {
353 DRM_DEBUG_KMS("%s: Ignoring invalid EDID block %d.\n",
354 drm_get_connector_name(connector), j);
357 if (valid_extensions != block[0x7e]) {
358 block[EDID_LENGTH-1] += block[0x7e] - valid_extensions;
359 block[0x7e] = valid_extensions;
360 new = reallocf(block, (valid_extensions + 1) * EDID_LENGTH,
361 DRM_MEM_KMS, M_WAITOK);
365 DRM_DEBUG_KMS("got EDID from %s\n", drm_get_connector_name(connector));
369 DRM_ERROR("%s: EDID block %d invalid.\n",
370 drm_get_connector_name(connector), j);
373 free(block, DRM_MEM_KMS);
378 * Probe DDC presence.
380 * \param adapter : i2c device adaptor
381 * \return 1 on success
384 drm_probe_ddc(device_t adapter)
388 return (drm_do_probe_ddc_edid(adapter, &out, 0, 1) == 0);
392 * drm_get_edid - get EDID data, if available
393 * @connector: connector we're probing
394 * @adapter: i2c adapter to use for DDC
396 * Poke the given i2c channel to grab EDID data if possible. If found,
397 * attach it to the connector.
399 * Return edid data or NULL if we couldn't find any.
401 struct edid *drm_get_edid(struct drm_connector *connector,
404 struct edid *edid = NULL;
406 if (drm_probe_ddc(adapter))
407 edid = (struct edid *)drm_do_get_edid(connector, adapter);
409 connector->display_info.raw_edid = (char *)edid;
415 /*** EDID parsing ***/
418 * edid_vendor - match a string against EDID's obfuscated vendor field
419 * @edid: EDID to match
420 * @vendor: vendor string
422 * Returns true if @vendor is in @edid, false otherwise
424 static bool edid_vendor(struct edid *edid, char *vendor)
428 edid_vendor[0] = ((edid->mfg_id[0] & 0x7c) >> 2) + '@';
429 edid_vendor[1] = (((edid->mfg_id[0] & 0x3) << 3) |
430 ((edid->mfg_id[1] & 0xe0) >> 5)) + '@';
431 edid_vendor[2] = (edid->mfg_id[1] & 0x1f) + '@';
433 return !strncmp(edid_vendor, vendor, 3);
437 * edid_get_quirks - return quirk flags for a given EDID
438 * @edid: EDID to process
440 * This tells subsequent routines what fixes they need to apply.
442 static u32 edid_get_quirks(struct edid *edid)
444 struct edid_quirk *quirk;
447 for (i = 0; i < DRM_ARRAY_SIZE(edid_quirk_list); i++) {
448 quirk = &edid_quirk_list[i];
450 if (edid_vendor(edid, quirk->vendor) &&
451 (EDID_PRODUCT_ID(edid) == quirk->product_id))
452 return quirk->quirks;
458 #define MODE_SIZE(m) ((m)->hdisplay * (m)->vdisplay)
459 #define MODE_REFRESH_DIFF(m,r) (abs((m)->vrefresh - target_refresh))
462 * edid_fixup_preferred - set preferred modes based on quirk list
463 * @connector: has mode list to fix up
464 * @quirks: quirks list
466 * Walk the mode list for @connector, clearing the preferred status
467 * on existing modes and setting it anew for the right mode ala @quirks.
469 static void edid_fixup_preferred(struct drm_connector *connector,
472 struct drm_display_mode *t, *cur_mode, *preferred_mode;
473 int target_refresh = 0;
475 if (list_empty(&connector->probed_modes))
478 if (quirks & EDID_QUIRK_PREFER_LARGE_60)
480 if (quirks & EDID_QUIRK_PREFER_LARGE_75)
483 preferred_mode = list_first_entry(&connector->probed_modes,
484 struct drm_display_mode, head);
486 list_for_each_entry_safe(cur_mode, t, &connector->probed_modes, head) {
487 cur_mode->type &= ~DRM_MODE_TYPE_PREFERRED;
489 if (cur_mode == preferred_mode)
492 /* Largest mode is preferred */
493 if (MODE_SIZE(cur_mode) > MODE_SIZE(preferred_mode))
494 preferred_mode = cur_mode;
496 /* At a given size, try to get closest to target refresh */
497 if ((MODE_SIZE(cur_mode) == MODE_SIZE(preferred_mode)) &&
498 MODE_REFRESH_DIFF(cur_mode, target_refresh) <
499 MODE_REFRESH_DIFF(preferred_mode, target_refresh)) {
500 preferred_mode = cur_mode;
504 preferred_mode->type |= DRM_MODE_TYPE_PREFERRED;
507 struct drm_display_mode *drm_mode_find_dmt(struct drm_device *dev,
508 int hsize, int vsize, int fresh)
510 struct drm_display_mode *mode = NULL;
513 for (i = 0; i < drm_num_dmt_modes; i++) {
514 struct drm_display_mode *ptr = &drm_dmt_modes[i];
515 if (hsize == ptr->hdisplay &&
516 vsize == ptr->vdisplay &&
517 fresh == drm_mode_vrefresh(ptr)) {
518 /* get the expected default mode */
519 mode = drm_mode_duplicate(dev, ptr);
526 typedef void detailed_cb(struct detailed_timing *timing, void *closure);
529 cea_for_each_detailed_block(u8 *ext, detailed_cb *cb, void *closure)
532 u8 rev = ext[0x01], d = ext[0x02];
533 u8 *det_base = ext + d;
540 /* have to infer how many blocks we have, check pixel clock */
541 for (i = 0; i < 6; i++)
542 if (det_base[18*i] || det_base[18*i+1])
547 n = min(ext[0x03] & 0x0f, 6);
551 for (i = 0; i < n; i++)
552 cb((struct detailed_timing *)(det_base + 18 * i), closure);
556 vtb_for_each_detailed_block(u8 *ext, detailed_cb *cb, void *closure)
558 unsigned int i, n = min((int)ext[0x02], 6);
559 u8 *det_base = ext + 5;
562 return; /* unknown version */
564 for (i = 0; i < n; i++)
565 cb((struct detailed_timing *)(det_base + 18 * i), closure);
569 drm_for_each_detailed_block(u8 *raw_edid, detailed_cb *cb, void *closure)
572 struct edid *edid = (struct edid *)raw_edid;
577 for (i = 0; i < EDID_DETAILED_TIMINGS; i++)
578 cb(&(edid->detailed_timings[i]), closure);
580 for (i = 1; i <= raw_edid[0x7e]; i++) {
581 u8 *ext = raw_edid + (i * EDID_LENGTH);
584 cea_for_each_detailed_block(ext, cb, closure);
587 vtb_for_each_detailed_block(ext, cb, closure);
596 is_rb(struct detailed_timing *t, void *data)
599 if (r[3] == EDID_DETAIL_MONITOR_RANGE)
601 *(bool *)data = true;
604 /* EDID 1.4 defines this explicitly. For EDID 1.3, we guess, badly. */
606 drm_monitor_supports_rb(struct edid *edid)
608 if (edid->revision >= 4) {
610 drm_for_each_detailed_block((u8 *)edid, is_rb, &ret);
614 return ((edid->input & DRM_EDID_INPUT_DIGITAL) != 0);
618 find_gtf2(struct detailed_timing *t, void *data)
621 if (r[3] == EDID_DETAIL_MONITOR_RANGE && r[10] == 0x02)
625 /* Secondary GTF curve kicks in above some break frequency */
627 drm_gtf2_hbreak(struct edid *edid)
630 drm_for_each_detailed_block((u8 *)edid, find_gtf2, &r);
631 return r ? (r[12] * 2) : 0;
635 drm_gtf2_2c(struct edid *edid)
638 drm_for_each_detailed_block((u8 *)edid, find_gtf2, &r);
639 return r ? r[13] : 0;
643 drm_gtf2_m(struct edid *edid)
646 drm_for_each_detailed_block((u8 *)edid, find_gtf2, &r);
647 return r ? (r[15] << 8) + r[14] : 0;
651 drm_gtf2_k(struct edid *edid)
654 drm_for_each_detailed_block((u8 *)edid, find_gtf2, &r);
655 return r ? r[16] : 0;
659 drm_gtf2_2j(struct edid *edid)
662 drm_for_each_detailed_block((u8 *)edid, find_gtf2, &r);
663 return r ? r[17] : 0;
667 * standard_timing_level - get std. timing level(CVT/GTF/DMT)
668 * @edid: EDID block to scan
670 static int standard_timing_level(struct edid *edid)
672 if (edid->revision >= 2) {
673 if (edid->revision >= 4 && (edid->features & DRM_EDID_FEATURE_DEFAULT_GTF))
675 if (drm_gtf2_hbreak(edid))
683 * 0 is reserved. The spec says 0x01 fill for unused timings. Some old
684 * monitors fill with ascii space (0x20) instead.
687 bad_std_timing(u8 a, u8 b)
689 return (a == 0x00 && b == 0x00) ||
690 (a == 0x01 && b == 0x01) ||
691 (a == 0x20 && b == 0x20);
695 * drm_mode_std - convert standard mode info (width, height, refresh) into mode
696 * @t: standard timing params
697 * @timing_level: standard timing level
699 * Take the standard timing params (in this case width, aspect, and refresh)
700 * and convert them into a real mode using CVT/GTF/DMT.
702 static struct drm_display_mode *
703 drm_mode_std(struct drm_connector *connector, struct edid *edid,
704 struct std_timing *t, int revision)
706 struct drm_device *dev = connector->dev;
707 struct drm_display_mode *m, *mode = NULL;
710 unsigned aspect_ratio = (t->vfreq_aspect & EDID_TIMING_ASPECT_MASK)
711 >> EDID_TIMING_ASPECT_SHIFT;
712 unsigned vfreq = (t->vfreq_aspect & EDID_TIMING_VFREQ_MASK)
713 >> EDID_TIMING_VFREQ_SHIFT;
714 int timing_level = standard_timing_level(edid);
716 if (bad_std_timing(t->hsize, t->vfreq_aspect))
719 /* According to the EDID spec, the hdisplay = hsize * 8 + 248 */
720 hsize = t->hsize * 8 + 248;
721 /* vrefresh_rate = vfreq + 60 */
722 vrefresh_rate = vfreq + 60;
723 /* the vdisplay is calculated based on the aspect ratio */
724 if (aspect_ratio == 0) {
728 vsize = (hsize * 10) / 16;
729 } else if (aspect_ratio == 1)
730 vsize = (hsize * 3) / 4;
731 else if (aspect_ratio == 2)
732 vsize = (hsize * 4) / 5;
734 vsize = (hsize * 9) / 16;
736 /* HDTV hack, part 1 */
737 if (vrefresh_rate == 60 &&
738 ((hsize == 1360 && vsize == 765) ||
739 (hsize == 1368 && vsize == 769))) {
745 * If this connector already has a mode for this size and refresh
746 * rate (because it came from detailed or CVT info), use that
747 * instead. This way we don't have to guess at interlace or
750 list_for_each_entry(m, &connector->probed_modes, head)
751 if (m->hdisplay == hsize && m->vdisplay == vsize &&
752 drm_mode_vrefresh(m) == vrefresh_rate)
755 /* HDTV hack, part 2 */
756 if (hsize == 1366 && vsize == 768 && vrefresh_rate == 60) {
757 mode = drm_cvt_mode(dev, 1366, 768, vrefresh_rate, 0, 0,
759 mode->hdisplay = 1366;
760 mode->hsync_start = mode->hsync_start - 1;
761 mode->hsync_end = mode->hsync_end - 1;
765 /* check whether it can be found in default mode table */
766 mode = drm_mode_find_dmt(dev, hsize, vsize, vrefresh_rate);
770 switch (timing_level) {
774 mode = drm_gtf_mode(dev, hsize, vsize, vrefresh_rate, 0, 0);
778 * This is potentially wrong if there's ever a monitor with
779 * more than one ranges section, each claiming a different
780 * secondary GTF curve. Please don't do that.
782 mode = drm_gtf_mode(dev, hsize, vsize, vrefresh_rate, 0, 0);
783 if (drm_mode_hsync(mode) > drm_gtf2_hbreak(edid)) {
784 free(mode, DRM_MEM_KMS);
785 mode = drm_gtf_mode_complex(dev, hsize, vsize,
794 mode = drm_cvt_mode(dev, hsize, vsize, vrefresh_rate, 0, 0,
802 * EDID is delightfully ambiguous about how interlaced modes are to be
803 * encoded. Our internal representation is of frame height, but some
804 * HDTV detailed timings are encoded as field height.
806 * The format list here is from CEA, in frame size. Technically we
807 * should be checking refresh rate too. Whatever.
810 drm_mode_do_interlace_quirk(struct drm_display_mode *mode,
811 struct detailed_pixel_timing *pt)
814 static const struct {
816 } cea_interlaced[] = {
826 if (!(pt->misc & DRM_EDID_PT_INTERLACED))
829 for (i = 0; i < DRM_ARRAY_SIZE(cea_interlaced); i++) {
830 if ((mode->hdisplay == cea_interlaced[i].w) &&
831 (mode->vdisplay == cea_interlaced[i].h / 2)) {
833 mode->vsync_start *= 2;
834 mode->vsync_end *= 2;
840 mode->flags |= DRM_MODE_FLAG_INTERLACE;
844 * drm_mode_detailed - create a new mode from an EDID detailed timing section
845 * @dev: DRM device (needed to create new mode)
847 * @timing: EDID detailed timing info
848 * @quirks: quirks to apply
850 * An EDID detailed timing block contains enough info for us to create and
851 * return a new struct drm_display_mode.
853 static struct drm_display_mode *drm_mode_detailed(struct drm_device *dev,
855 struct detailed_timing *timing,
858 struct drm_display_mode *mode;
859 struct detailed_pixel_timing *pt = &timing->data.pixel_data;
860 unsigned hactive = (pt->hactive_hblank_hi & 0xf0) << 4 | pt->hactive_lo;
861 unsigned vactive = (pt->vactive_vblank_hi & 0xf0) << 4 | pt->vactive_lo;
862 unsigned hblank = (pt->hactive_hblank_hi & 0xf) << 8 | pt->hblank_lo;
863 unsigned vblank = (pt->vactive_vblank_hi & 0xf) << 8 | pt->vblank_lo;
864 unsigned hsync_offset = (pt->hsync_vsync_offset_pulse_width_hi & 0xc0) << 2 | pt->hsync_offset_lo;
865 unsigned hsync_pulse_width = (pt->hsync_vsync_offset_pulse_width_hi & 0x30) << 4 | pt->hsync_pulse_width_lo;
866 unsigned vsync_offset = (pt->hsync_vsync_offset_pulse_width_hi & 0xc) >> 2 | pt->vsync_offset_pulse_width_lo >> 4;
867 unsigned vsync_pulse_width = (pt->hsync_vsync_offset_pulse_width_hi & 0x3) << 4 | (pt->vsync_offset_pulse_width_lo & 0xf);
869 /* ignore tiny modes */
870 if (hactive < 64 || vactive < 64)
873 if (pt->misc & DRM_EDID_PT_STEREO) {
874 printf("stereo mode not supported\n");
877 if (!(pt->misc & DRM_EDID_PT_SEPARATE_SYNC)) {
878 printf("composite sync not supported\n");
881 /* it is incorrect if hsync/vsync width is zero */
882 if (!hsync_pulse_width || !vsync_pulse_width) {
883 DRM_DEBUG_KMS("Incorrect Detailed timing. "
884 "Wrong Hsync/Vsync pulse width\n");
887 mode = drm_mode_create(dev);
891 mode->type = DRM_MODE_TYPE_DRIVER;
893 if (quirks & EDID_QUIRK_135_CLOCK_TOO_HIGH)
894 timing->pixel_clock = htole16(1088);
896 mode->clock = le16toh(timing->pixel_clock) * 10;
898 mode->hdisplay = hactive;
899 mode->hsync_start = mode->hdisplay + hsync_offset;
900 mode->hsync_end = mode->hsync_start + hsync_pulse_width;
901 mode->htotal = mode->hdisplay + hblank;
903 mode->vdisplay = vactive;
904 mode->vsync_start = mode->vdisplay + vsync_offset;
905 mode->vsync_end = mode->vsync_start + vsync_pulse_width;
906 mode->vtotal = mode->vdisplay + vblank;
908 /* Some EDIDs have bogus h/vtotal values */
909 if (mode->hsync_end > mode->htotal)
910 mode->htotal = mode->hsync_end + 1;
911 if (mode->vsync_end > mode->vtotal)
912 mode->vtotal = mode->vsync_end + 1;
914 drm_mode_do_interlace_quirk(mode, pt);
916 drm_mode_set_name(mode);
918 if (quirks & EDID_QUIRK_DETAILED_SYNC_PP) {
919 pt->misc |= DRM_EDID_PT_HSYNC_POSITIVE | DRM_EDID_PT_VSYNC_POSITIVE;
922 mode->flags |= (pt->misc & DRM_EDID_PT_HSYNC_POSITIVE) ?
923 DRM_MODE_FLAG_PHSYNC : DRM_MODE_FLAG_NHSYNC;
924 mode->flags |= (pt->misc & DRM_EDID_PT_VSYNC_POSITIVE) ?
925 DRM_MODE_FLAG_PVSYNC : DRM_MODE_FLAG_NVSYNC;
927 mode->width_mm = pt->width_mm_lo | (pt->width_height_mm_hi & 0xf0) << 4;
928 mode->height_mm = pt->height_mm_lo | (pt->width_height_mm_hi & 0xf) << 8;
930 if (quirks & EDID_QUIRK_DETAILED_IN_CM) {
931 mode->width_mm *= 10;
932 mode->height_mm *= 10;
935 if (quirks & EDID_QUIRK_DETAILED_USE_MAXIMUM_SIZE) {
936 mode->width_mm = edid->width_cm * 10;
937 mode->height_mm = edid->height_cm * 10;
944 mode_is_rb(const struct drm_display_mode *mode)
946 return (mode->htotal - mode->hdisplay == 160) &&
947 (mode->hsync_end - mode->hdisplay == 80) &&
948 (mode->hsync_end - mode->hsync_start == 32) &&
949 (mode->vsync_start - mode->vdisplay == 3);
953 mode_in_hsync_range(struct drm_display_mode *mode,
954 struct edid *edid, u8 *t)
956 int hsync, hmin, hmax;
959 if (edid->revision >= 4)
960 hmin += ((t[4] & 0x04) ? 255 : 0);
962 if (edid->revision >= 4)
963 hmax += ((t[4] & 0x08) ? 255 : 0);
964 hsync = drm_mode_hsync(mode);
966 return (hsync <= hmax && hsync >= hmin);
970 mode_in_vsync_range(struct drm_display_mode *mode,
971 struct edid *edid, u8 *t)
973 int vsync, vmin, vmax;
976 if (edid->revision >= 4)
977 vmin += ((t[4] & 0x01) ? 255 : 0);
979 if (edid->revision >= 4)
980 vmax += ((t[4] & 0x02) ? 255 : 0);
981 vsync = drm_mode_vrefresh(mode);
983 return (vsync <= vmax && vsync >= vmin);
987 range_pixel_clock(struct edid *edid, u8 *t)
990 if (t[9] == 0 || t[9] == 255)
993 /* 1.4 with CVT support gives us real precision, yay */
994 if (edid->revision >= 4 && t[10] == 0x04)
995 return (t[9] * 10000) - ((t[12] >> 2) * 250);
997 /* 1.3 is pathetic, so fuzz up a bit */
998 return t[9] * 10000 + 5001;
1002 mode_in_range(struct drm_display_mode *mode, struct edid *edid,
1003 struct detailed_timing *timing)
1006 u8 *t = (u8 *)timing;
1008 if (!mode_in_hsync_range(mode, edid, t))
1011 if (!mode_in_vsync_range(mode, edid, t))
1014 if ((max_clock = range_pixel_clock(edid, t)))
1015 if (mode->clock > max_clock)
1018 /* 1.4 max horizontal check */
1019 if (edid->revision >= 4 && t[10] == 0x04)
1020 if (t[13] && mode->hdisplay > 8 * (t[13] + (256 * (t[12]&0x3))))
1023 if (mode_is_rb(mode) && !drm_monitor_supports_rb(edid))
1030 * XXX If drm_dmt_modes ever regrows the CVT-R modes (and it will) this will
1031 * need to account for them.
1034 drm_gtf_modes_for_range(struct drm_connector *connector, struct edid *edid,
1035 struct detailed_timing *timing)
1038 struct drm_display_mode *newmode;
1039 struct drm_device *dev = connector->dev;
1041 for (i = 0; i < drm_num_dmt_modes; i++) {
1042 if (mode_in_range(drm_dmt_modes + i, edid, timing)) {
1043 newmode = drm_mode_duplicate(dev, &drm_dmt_modes[i]);
1045 drm_mode_probed_add(connector, newmode);
1055 do_inferred_modes(struct detailed_timing *timing, void *c)
1057 struct detailed_mode_closure *closure = c;
1058 struct detailed_non_pixel *data = &timing->data.other_data;
1059 int gtf = (closure->edid->features & DRM_EDID_FEATURE_DEFAULT_GTF);
1061 if (gtf && data->type == EDID_DETAIL_MONITOR_RANGE)
1062 closure->modes += drm_gtf_modes_for_range(closure->connector,
1068 add_inferred_modes(struct drm_connector *connector, struct edid *edid)
1070 struct detailed_mode_closure closure = {
1071 connector, edid, 0, 0, 0
1074 if (version_greater(edid, 1, 0))
1075 drm_for_each_detailed_block((u8 *)edid, do_inferred_modes,
1078 return closure.modes;
1082 drm_est3_modes(struct drm_connector *connector, struct detailed_timing *timing)
1084 int i, j, m, modes = 0;
1085 struct drm_display_mode *mode;
1086 u8 *est = ((u8 *)timing) + 5;
1088 for (i = 0; i < 6; i++) {
1089 for (j = 7; j > 0; j--) {
1090 m = (i * 8) + (7 - j);
1091 if (m >= DRM_ARRAY_SIZE(est3_modes))
1093 if (est[i] & (1 << j)) {
1094 mode = drm_mode_find_dmt(connector->dev,
1098 /*, est3_modes[m].rb */);
1100 drm_mode_probed_add(connector, mode);
1111 do_established_modes(struct detailed_timing *timing, void *c)
1113 struct detailed_mode_closure *closure = c;
1114 struct detailed_non_pixel *data = &timing->data.other_data;
1116 if (data->type == EDID_DETAIL_EST_TIMINGS)
1117 closure->modes += drm_est3_modes(closure->connector, timing);
1121 * add_established_modes - get est. modes from EDID and add them
1122 * @edid: EDID block to scan
1124 * Each EDID block contains a bitmap of the supported "established modes" list
1125 * (defined above). Tease them out and add them to the global modes list.
1128 add_established_modes(struct drm_connector *connector, struct edid *edid)
1130 struct drm_device *dev = connector->dev;
1131 unsigned long est_bits = edid->established_timings.t1 |
1132 (edid->established_timings.t2 << 8) |
1133 ((edid->established_timings.mfg_rsvd & 0x80) << 9);
1135 struct detailed_mode_closure closure = {
1136 connector, edid, 0, 0, 0
1139 for (i = 0; i <= EDID_EST_TIMINGS; i++) {
1140 if (est_bits & (1<<i)) {
1141 struct drm_display_mode *newmode;
1142 newmode = drm_mode_duplicate(dev, &edid_est_modes[i]);
1144 drm_mode_probed_add(connector, newmode);
1150 if (version_greater(edid, 1, 0))
1151 drm_for_each_detailed_block((u8 *)edid,
1152 do_established_modes, &closure);
1154 return modes + closure.modes;
1158 do_standard_modes(struct detailed_timing *timing, void *c)
1160 struct detailed_mode_closure *closure = c;
1161 struct detailed_non_pixel *data = &timing->data.other_data;
1162 struct drm_connector *connector = closure->connector;
1163 struct edid *edid = closure->edid;
1165 if (data->type == EDID_DETAIL_STD_MODES) {
1167 for (i = 0; i < 6; i++) {
1168 struct std_timing *std;
1169 struct drm_display_mode *newmode;
1171 std = &data->data.timings[i];
1172 newmode = drm_mode_std(connector, edid, std,
1175 drm_mode_probed_add(connector, newmode);
1183 * add_standard_modes - get std. modes from EDID and add them
1184 * @edid: EDID block to scan
1186 * Standard modes can be calculated using the appropriate standard (DMT,
1187 * GTF or CVT. Grab them from @edid and add them to the list.
1190 add_standard_modes(struct drm_connector *connector, struct edid *edid)
1193 struct detailed_mode_closure closure = {
1194 connector, edid, 0, 0, 0
1197 for (i = 0; i < EDID_STD_TIMINGS; i++) {
1198 struct drm_display_mode *newmode;
1200 newmode = drm_mode_std(connector, edid,
1201 &edid->standard_timings[i],
1204 drm_mode_probed_add(connector, newmode);
1209 if (version_greater(edid, 1, 0))
1210 drm_for_each_detailed_block((u8 *)edid, do_standard_modes,
1213 /* XXX should also look for standard codes in VTB blocks */
1215 return modes + closure.modes;
1218 static int drm_cvt_modes(struct drm_connector *connector,
1219 struct detailed_timing *timing)
1221 int i, j, modes = 0;
1222 struct drm_display_mode *newmode;
1223 struct drm_device *dev = connector->dev;
1224 struct cvt_timing *cvt;
1225 const int rates[] = { 60, 85, 75, 60, 50 };
1226 const u8 empty[3] = { 0, 0, 0 };
1228 for (i = 0; i < 4; i++) {
1229 int width = 0, height;
1230 cvt = &(timing->data.other_data.data.cvt[i]);
1232 if (!memcmp(cvt->code, empty, 3))
1235 height = (cvt->code[0] + ((cvt->code[1] & 0xf0) << 4) + 1) * 2;
1236 switch (cvt->code[1] & 0x0c) {
1238 width = height * 4 / 3;
1241 width = height * 16 / 9;
1244 width = height * 16 / 10;
1247 width = height * 15 / 9;
1251 for (j = 1; j < 5; j++) {
1252 if (cvt->code[2] & (1 << j)) {
1253 newmode = drm_cvt_mode(dev, width, height,
1257 drm_mode_probed_add(connector, newmode);
1268 do_cvt_mode(struct detailed_timing *timing, void *c)
1270 struct detailed_mode_closure *closure = c;
1271 struct detailed_non_pixel *data = &timing->data.other_data;
1273 if (data->type == EDID_DETAIL_CVT_3BYTE)
1274 closure->modes += drm_cvt_modes(closure->connector, timing);
1278 add_cvt_modes(struct drm_connector *connector, struct edid *edid)
1280 struct detailed_mode_closure closure = {
1281 connector, edid, 0, 0, 0
1284 if (version_greater(edid, 1, 2))
1285 drm_for_each_detailed_block((u8 *)edid, do_cvt_mode, &closure);
1287 /* XXX should also look for CVT codes in VTB blocks */
1289 return closure.modes;
1293 do_detailed_mode(struct detailed_timing *timing, void *c)
1295 struct detailed_mode_closure *closure = c;
1296 struct drm_display_mode *newmode;
1298 if (timing->pixel_clock) {
1299 newmode = drm_mode_detailed(closure->connector->dev,
1300 closure->edid, timing,
1305 if (closure->preferred)
1306 newmode->type |= DRM_MODE_TYPE_PREFERRED;
1308 drm_mode_probed_add(closure->connector, newmode);
1310 closure->preferred = 0;
1315 * add_detailed_modes - Add modes from detailed timings
1316 * @connector: attached connector
1317 * @edid: EDID block to scan
1318 * @quirks: quirks to apply
1321 add_detailed_modes(struct drm_connector *connector, struct edid *edid,
1324 struct detailed_mode_closure closure = {
1332 if (closure.preferred && !version_greater(edid, 1, 3))
1334 (edid->features & DRM_EDID_FEATURE_PREFERRED_TIMING);
1336 drm_for_each_detailed_block((u8 *)edid, do_detailed_mode, &closure);
1338 return closure.modes;
1341 #define HDMI_IDENTIFIER 0x000C03
1342 #define AUDIO_BLOCK 0x01
1343 #define VENDOR_BLOCK 0x03
1344 #define SPEAKER_BLOCK 0x04
1345 #define EDID_BASIC_AUDIO (1 << 6)
1348 * Search EDID for CEA extension block.
1350 u8 *drm_find_cea_extension(struct edid *edid)
1352 u8 *edid_ext = NULL;
1355 /* No EDID or EDID extensions */
1356 if (edid == NULL || edid->extensions == 0)
1359 /* Find CEA extension */
1360 for (i = 0; i < edid->extensions; i++) {
1361 edid_ext = (u8 *)edid + EDID_LENGTH * (i + 1);
1362 if (edid_ext[0] == CEA_EXT)
1366 if (i == edid->extensions)
1373 parse_hdmi_vsdb(struct drm_connector *connector, uint8_t *db)
1375 connector->eld[5] |= (db[6] >> 7) << 1; /* Supports_AI */
1377 connector->dvi_dual = db[6] & 1;
1378 connector->max_tmds_clock = db[7] * 5;
1380 connector->latency_present[0] = db[8] >> 7;
1381 connector->latency_present[1] = (db[8] >> 6) & 1;
1382 connector->video_latency[0] = db[9];
1383 connector->audio_latency[0] = db[10];
1384 connector->video_latency[1] = db[11];
1385 connector->audio_latency[1] = db[12];
1387 DRM_DEBUG_KMS("HDMI: DVI dual %d, "
1388 "max TMDS clock %d, "
1389 "latency present %d %d, "
1390 "video latency %d %d, "
1391 "audio latency %d %d\n",
1392 connector->dvi_dual,
1393 connector->max_tmds_clock,
1394 (int) connector->latency_present[0],
1395 (int) connector->latency_present[1],
1396 connector->video_latency[0],
1397 connector->video_latency[1],
1398 connector->audio_latency[0],
1399 connector->audio_latency[1]);
1403 monitor_name(struct detailed_timing *t, void *data)
1405 if (t->data.other_data.type == EDID_DETAIL_MONITOR_NAME)
1406 *(u8 **)data = t->data.other_data.data.str.str;
1410 * drm_edid_to_eld - build ELD from EDID
1411 * @connector: connector corresponding to the HDMI/DP sink
1412 * @edid: EDID to parse
1414 * Fill the ELD (EDID-Like Data) buffer for passing to the audio driver.
1415 * Some ELD fields are left to the graphics driver caller:
1420 void drm_edid_to_eld(struct drm_connector *connector, struct edid *edid)
1422 uint8_t *eld = connector->eld;
1430 memset(eld, 0, sizeof(connector->eld));
1432 cea = drm_find_cea_extension(edid);
1434 DRM_DEBUG_KMS("ELD: no CEA Extension found\n");
1439 drm_for_each_detailed_block((u8 *)edid, monitor_name, &name);
1440 for (mnl = 0; name && mnl < 13; mnl++) {
1441 if (name[mnl] == 0x0a)
1443 eld[20 + mnl] = name[mnl];
1445 eld[4] = (cea[1] << 5) | mnl;
1446 DRM_DEBUG_KMS("ELD monitor %s\n", eld + 20);
1448 eld[0] = 2 << 3; /* ELD version: 2 */
1450 eld[16] = edid->mfg_id[0];
1451 eld[17] = edid->mfg_id[1];
1452 eld[18] = edid->prod_code[0];
1453 eld[19] = edid->prod_code[1];
1455 for (db = cea + 4; db < cea + cea[2]; db += dbl + 1) {
1458 switch ((db[0] & 0xe0) >> 5) {
1459 case AUDIO_BLOCK: /* Audio Data Block, contains SADs */
1460 sad_count = dbl / 3;
1461 memcpy(eld + 20 + mnl, &db[1], dbl);
1463 case SPEAKER_BLOCK: /* Speaker Allocation Data Block */
1467 /* HDMI Vendor-Specific Data Block */
1468 if (db[1] == 0x03 && db[2] == 0x0c && db[3] == 0)
1469 parse_hdmi_vsdb(connector, db);
1475 eld[5] |= sad_count << 4;
1476 eld[2] = (20 + mnl + sad_count * 3 + 3) / 4;
1478 DRM_DEBUG_KMS("ELD size %d, SAD count %d\n", (int)eld[2], sad_count);
1482 * drm_av_sync_delay - HDMI/DP sink audio-video sync delay in millisecond
1483 * @connector: connector associated with the HDMI/DP sink
1484 * @mode: the display mode
1486 int drm_av_sync_delay(struct drm_connector *connector,
1487 struct drm_display_mode *mode)
1489 int i = !!(mode->flags & DRM_MODE_FLAG_INTERLACE);
1492 if (!connector->latency_present[0])
1494 if (!connector->latency_present[1])
1497 a = connector->audio_latency[i];
1498 v = connector->video_latency[i];
1501 * HDMI/DP sink doesn't support audio or video?
1503 if (a == 255 || v == 255)
1507 * Convert raw EDID values to millisecond.
1508 * Treat unknown latency as 0ms.
1511 a = min(2 * (a - 1), 500);
1513 v = min(2 * (v - 1), 500);
1515 return max(v - a, 0);
1519 * drm_select_eld - select one ELD from multiple HDMI/DP sinks
1520 * @encoder: the encoder just changed display mode
1521 * @mode: the adjusted display mode
1523 * It's possible for one encoder to be associated with multiple HDMI/DP sinks.
1524 * The policy is now hard coded to simply use the first HDMI/DP sink's ELD.
1526 struct drm_connector *drm_select_eld(struct drm_encoder *encoder,
1527 struct drm_display_mode *mode)
1529 struct drm_connector *connector;
1530 struct drm_device *dev = encoder->dev;
1532 list_for_each_entry(connector, &dev->mode_config.connector_list, head)
1533 if (connector->encoder == encoder && connector->eld[0])
1540 * drm_detect_hdmi_monitor - detect whether monitor is hdmi.
1541 * @edid: monitor EDID information
1543 * Parse the CEA extension according to CEA-861-B.
1544 * Return true if HDMI, false if not or unknown.
1546 bool drm_detect_hdmi_monitor(struct edid *edid)
1550 int start_offset, end_offset;
1551 bool is_hdmi = false;
1553 edid_ext = drm_find_cea_extension(edid);
1557 /* Data block offset in CEA extension block */
1559 end_offset = edid_ext[2];
1562 * Because HDMI identifier is in Vendor Specific Block,
1563 * search it from all data blocks of CEA extension.
1565 for (i = start_offset; i < end_offset;
1566 /* Increased by data block len */
1567 i += ((edid_ext[i] & 0x1f) + 1)) {
1568 /* Find vendor specific block */
1569 if ((edid_ext[i] >> 5) == VENDOR_BLOCK) {
1570 hdmi_id = edid_ext[i + 1] | (edid_ext[i + 2] << 8) |
1571 edid_ext[i + 3] << 16;
1572 /* Find HDMI identifier */
1573 if (hdmi_id == HDMI_IDENTIFIER)
1584 * drm_detect_monitor_audio - check monitor audio capability
1586 * Monitor should have CEA extension block.
1587 * If monitor has 'basic audio', but no CEA audio blocks, it's 'basic
1588 * audio' only. If there is any audio extension block and supported
1589 * audio format, assume at least 'basic audio' support, even if 'basic
1590 * audio' is not defined in EDID.
1593 bool drm_detect_monitor_audio(struct edid *edid)
1597 bool has_audio = false;
1598 int start_offset, end_offset;
1600 edid_ext = drm_find_cea_extension(edid);
1604 has_audio = ((edid_ext[3] & EDID_BASIC_AUDIO) != 0);
1607 DRM_DEBUG_KMS("Monitor has basic audio support\n");
1611 /* Data block offset in CEA extension block */
1613 end_offset = edid_ext[2];
1615 for (i = start_offset; i < end_offset;
1616 i += ((edid_ext[i] & 0x1f) + 1)) {
1617 if ((edid_ext[i] >> 5) == AUDIO_BLOCK) {
1619 for (j = 1; j < (edid_ext[i] & 0x1f); j += 3)
1620 DRM_DEBUG_KMS("CEA audio format %d\n",
1621 (edid_ext[i + j] >> 3) & 0xf);
1630 * drm_add_display_info - pull display info out if present
1632 * @info: display info (attached to connector)
1634 * Grab any available display info and stuff it into the drm_display_info
1635 * structure that's part of the connector. Useful for tracking bpp and
1638 static void drm_add_display_info(struct edid *edid,
1639 struct drm_display_info *info)
1643 info->width_mm = edid->width_cm * 10;
1644 info->height_mm = edid->height_cm * 10;
1646 /* driver figures it out in this case */
1648 info->color_formats = 0;
1650 /* Only defined for 1.4 with digital displays */
1651 if (edid->revision < 4)
1654 if (!(edid->input & DRM_EDID_INPUT_DIGITAL))
1657 switch (edid->input & DRM_EDID_DIGITAL_DEPTH_MASK) {
1658 case DRM_EDID_DIGITAL_DEPTH_6:
1661 case DRM_EDID_DIGITAL_DEPTH_8:
1664 case DRM_EDID_DIGITAL_DEPTH_10:
1667 case DRM_EDID_DIGITAL_DEPTH_12:
1670 case DRM_EDID_DIGITAL_DEPTH_14:
1673 case DRM_EDID_DIGITAL_DEPTH_16:
1676 case DRM_EDID_DIGITAL_DEPTH_UNDEF:
1682 info->color_formats = DRM_COLOR_FORMAT_RGB444;
1683 if (info->color_formats & DRM_EDID_FEATURE_RGB_YCRCB444)
1684 info->color_formats = DRM_COLOR_FORMAT_YCRCB444;
1685 if (info->color_formats & DRM_EDID_FEATURE_RGB_YCRCB422)
1686 info->color_formats = DRM_COLOR_FORMAT_YCRCB422;
1688 /* Get data from CEA blocks if present */
1689 edid_ext = drm_find_cea_extension(edid);
1693 info->cea_rev = edid_ext[1];
1697 * drm_add_edid_modes - add modes from EDID data, if available
1698 * @connector: connector we're probing
1701 * Add the specified modes to the connector's mode list.
1703 * Return number of modes added or 0 if we couldn't find any.
1705 int drm_add_edid_modes(struct drm_connector *connector, struct edid *edid)
1713 if (!drm_edid_is_valid(edid)) {
1714 device_printf(connector->dev->device, "%s: EDID invalid.\n",
1715 drm_get_connector_name(connector));
1719 quirks = edid_get_quirks(edid);
1722 * EDID spec says modes should be preferred in this order:
1723 * - preferred detailed mode
1724 * - other detailed modes from base block
1725 * - detailed modes from extension blocks
1726 * - CVT 3-byte code modes
1727 * - standard timing codes
1728 * - established timing codes
1729 * - modes inferred from GTF or CVT range information
1731 * We get this pretty much right.
1733 * XXX order for additional mode types in extension blocks?
1735 num_modes += add_detailed_modes(connector, edid, quirks);
1736 num_modes += add_cvt_modes(connector, edid);
1737 num_modes += add_standard_modes(connector, edid);
1738 num_modes += add_established_modes(connector, edid);
1739 num_modes += add_inferred_modes(connector, edid);
1741 if (quirks & (EDID_QUIRK_PREFER_LARGE_60 | EDID_QUIRK_PREFER_LARGE_75))
1742 edid_fixup_preferred(connector, quirks);
1744 drm_add_display_info(edid, &connector->display_info);
1750 * drm_add_modes_noedid - add modes for the connectors without EDID
1751 * @connector: connector we're probing
1752 * @hdisplay: the horizontal display limit
1753 * @vdisplay: the vertical display limit
1755 * Add the specified modes to the connector's mode list. Only when the
1756 * hdisplay/vdisplay is not beyond the given limit, it will be added.
1758 * Return number of modes added or 0 if we couldn't find any.
1760 int drm_add_modes_noedid(struct drm_connector *connector,
1761 int hdisplay, int vdisplay)
1763 int i, count, num_modes = 0;
1764 struct drm_display_mode *mode;
1765 struct drm_device *dev = connector->dev;
1767 count = sizeof(drm_dmt_modes) / sizeof(struct drm_display_mode);
1773 for (i = 0; i < count; i++) {
1774 struct drm_display_mode *ptr = &drm_dmt_modes[i];
1775 if (hdisplay && vdisplay) {
1777 * Only when two are valid, they will be used to check
1778 * whether the mode should be added to the mode list of
1781 if (ptr->hdisplay > hdisplay ||
1782 ptr->vdisplay > vdisplay)
1785 if (drm_mode_vrefresh(ptr) > 61)
1787 mode = drm_mode_duplicate(dev, ptr);
1789 drm_mode_probed_add(connector, mode);