/*
* Copyright (c) 2006, 2016, Oracle and/or its affiliates. All rights reserved.
*/
/*
* Copyright (c) 2006 Luc Verhaegen (quirks list)
* Copyright (c) 2007-2008, 2013, Intel Corporation
* Jesse Barnes <jesse.barnes@intel.com>
*
* DDC probing routines (drm_ddc_read & drm_do_probe_ddc_edid) originally from
* FB layer.
* Copyright (C) 2006 Dennis Munsie <dmunsie@cecropia.com>
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sub license,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the
* next paragraph) shall be included in all copies or substantial portions
* of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*/
#include "drm.h"
#include "drmP.h"
#include "drm_edid.h"
#include "drm_sun_i2c.h"
#include "drm_crtc.h"
#define version_greater(edid, maj, min) \
(((edid)->version > (maj)) || \
((edid)->version == (maj) && (edid)->revision > (min)))
#define EDID_EST_TIMINGS 16
#define EDID_STD_TIMINGS 8
#define EDID_DETAILED_TIMINGS 4
/*
* EDID blocks out in the wild have a variety of bugs, try to collect
* them here (note that userspace may work around broken monitors first,
* but fixes should make their way here so that the kernel "just works"
* on as many displays as possible).
*/
/* First detailed mode wrong, use largest 60Hz mode */
#define EDID_QUIRK_PREFER_LARGE_60 (1 << 0)
/* Reported 135MHz pixel clock is too high, needs adjustment */
#define EDID_QUIRK_135_CLOCK_TOO_HIGH (1 << 1)
/* Prefer the largest mode at 75 Hz */
#define EDID_QUIRK_PREFER_LARGE_75 (1 << 2)
/* Detail timing is in cm not mm */
#define EDID_QUIRK_DETAILED_IN_CM (1 << 3)
/* Detailed timing descriptors have bogus size values, so just take the
* maximum size and use that.
*/
#define EDID_QUIRK_DETAILED_USE_MAXIMUM_SIZE (1 << 4)
/* Monitor forgot to set the first detailed is preferred bit. */
#define EDID_QUIRK_FIRST_DETAILED_PREFERRED (1 << 5)
/* use +hsync +vsync for detailed mode */
#define EDID_QUIRK_DETAILED_SYNC_PP (1 << 6)
/* Force reduced-blanking timings for detailed modes */
#define EDID_QUIRK_FORCE_REDUCED_BLANKING (1 << 7)
struct detailed_mode_closure {
struct drm_connector *connector;
struct edid *edid;
bool preferred;
u32 quirks;
int modes;
};
#define LEVEL_DMT 0
#define LEVEL_GTF 1
#define LEVEL_GTF2 2
#define LEVEL_CVT 3
static struct edid_quirk {
char vendor[4];
int product_id;
u32 quirks;
} edid_quirk_list[] = {
/* Acer AL1706 */
{ "ACR", 44358, EDID_QUIRK_PREFER_LARGE_60 },
/* Acer F51 */
{ "API", 0x7602, EDID_QUIRK_PREFER_LARGE_60 },
/* Unknown Acer */
{ "ACR", 2423, EDID_QUIRK_FIRST_DETAILED_PREFERRED },
/* Belinea 10 15 55 */
{ "MAX", 1516, EDID_QUIRK_PREFER_LARGE_60 },
{ "MAX", 0x77e, EDID_QUIRK_PREFER_LARGE_60 },
/* Envision Peripherals, Inc. EN-7100e */
{ "EPI", 59264, EDID_QUIRK_135_CLOCK_TOO_HIGH },
/* Envision EN2028 */
{ "EPI", 8232, EDID_QUIRK_PREFER_LARGE_60 },
/* Funai Electronics PM36B */
{ "FCM", 13600, EDID_QUIRK_PREFER_LARGE_75 |
EDID_QUIRK_DETAILED_IN_CM },
/* LG Philips LCD LP154W01-A5 */
{ "LPL", 0, EDID_QUIRK_DETAILED_USE_MAXIMUM_SIZE },
{ "LPL", 0x2a00, EDID_QUIRK_DETAILED_USE_MAXIMUM_SIZE },
/* Philips 107p5 CRT */
{ "PHL", 57364, EDID_QUIRK_FIRST_DETAILED_PREFERRED },
/* Proview AY765C */
{ "PTS", 765, EDID_QUIRK_FIRST_DETAILED_PREFERRED },
/* Samsung SyncMaster 205BW. Note: irony */
{ "SAM", 541, EDID_QUIRK_DETAILED_SYNC_PP },
/* Samsung SyncMaster 22[5-6]BW */
{ "SAM", 596, EDID_QUIRK_PREFER_LARGE_60 },
{ "SAM", 638, EDID_QUIRK_PREFER_LARGE_60 },
/* ViewSonic VA2026w */
{ "VSC", 5020, EDID_QUIRK_FORCE_REDUCED_BLANKING },
};
/*
* Autogenerated from the DMT spec.
* This table is copied from xfree86/modes/xf86EdidModes.c.
*/
static const struct drm_display_mode drm_dmt_modes[] = {
/* 640x350@85Hz */
{ DRM_MODE("640x350", DRM_MODE_TYPE_DRIVER, 31500, 640, 672,
736, 832, 0, 350, 382, 385, 445, 0,
DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC) },
/* 640x400@85Hz */
{ DRM_MODE("640x400", DRM_MODE_TYPE_DRIVER, 31500, 640, 672,
736, 832, 0, 400, 401, 404, 445, 0,
DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
/* 720x400@85Hz */
{ DRM_MODE("720x400", DRM_MODE_TYPE_DRIVER, 35500, 720, 756,
828, 936, 0, 400, 401, 404, 446, 0,
DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
/* 640x480@60Hz */
{ DRM_MODE("640x480", DRM_MODE_TYPE_DRIVER, 25175, 640, 656,
752, 800, 0, 480, 489, 492, 525, 0,
DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC) },
/* 640x480@72Hz */
{ DRM_MODE("640x480", DRM_MODE_TYPE_DRIVER, 31500, 640, 664,
704, 832, 0, 480, 489, 492, 520, 0,
DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC) },
/* 640x480@75Hz */
{ DRM_MODE("640x480", DRM_MODE_TYPE_DRIVER, 31500, 640, 656,
720, 840, 0, 480, 481, 484, 500, 0,
DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC) },
/* 640x480@85Hz */
{ DRM_MODE("640x480", DRM_MODE_TYPE_DRIVER, 36000, 640, 696,
752, 832, 0, 480, 481, 484, 509, 0,
DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC) },
/* 800x600@56Hz */
{ DRM_MODE("800x600", DRM_MODE_TYPE_DRIVER, 36000, 800, 824,
896, 1024, 0, 600, 601, 603, 625, 0,
DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
/* 800x600@60Hz */
{ DRM_MODE("800x600", DRM_MODE_TYPE_DRIVER, 40000, 800, 840,
968, 1056, 0, 600, 601, 605, 628, 0,
DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
/* 800x600@72Hz */
{ DRM_MODE("800x600", DRM_MODE_TYPE_DRIVER, 50000, 800, 856,
976, 1040, 0, 600, 637, 643, 666, 0,
DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
/* 800x600@75Hz */
{ DRM_MODE("800x600", DRM_MODE_TYPE_DRIVER, 49500, 800, 816,
896, 1056, 0, 600, 601, 604, 625, 0,
DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
/* 800x600@85Hz */
{ DRM_MODE("800x600", DRM_MODE_TYPE_DRIVER, 56250, 800, 832,
896, 1048, 0, 600, 601, 604, 631, 0,
DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
/* 800x600@120Hz RB */
{ DRM_MODE("800x600", DRM_MODE_TYPE_DRIVER, 73250, 800, 848,
880, 960, 0, 600, 603, 607, 636, 0,
DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC) },
/* 848x480@60Hz */
{ DRM_MODE("848x480", DRM_MODE_TYPE_DRIVER, 33750, 848, 864,
976, 1088, 0, 480, 486, 494, 517, 0,
DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
/* 1024x768@43Hz, interlace */
{ DRM_MODE("1024x768i", DRM_MODE_TYPE_DRIVER, 44900, 1024, 1032,
1208, 1264, 0, 768, 768, 772, 817, 0,
DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC |
DRM_MODE_FLAG_INTERLACE) },
/* 1024x768@60Hz */
{ DRM_MODE("1024x768", DRM_MODE_TYPE_DRIVER, 65000, 1024, 1048,
1184, 1344, 0, 768, 771, 777, 806, 0,
DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC) },
/* 1024x768@70Hz */
{ DRM_MODE("1024x768", DRM_MODE_TYPE_DRIVER, 75000, 1024, 1048,
1184, 1328, 0, 768, 771, 777, 806, 0,
DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC) },
/* 1024x768@75Hz */
{ DRM_MODE("1024x768", DRM_MODE_TYPE_DRIVER, 78750, 1024, 1040,
1136, 1312, 0, 768, 769, 772, 800, 0,
DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
/* 1024x768@85Hz */
{ DRM_MODE("1024x768", DRM_MODE_TYPE_DRIVER, 94500, 1024, 1072,
1168, 1376, 0, 768, 769, 772, 808, 0,
DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
/* 1024x768@120Hz RB */
{ DRM_MODE("1024x768", DRM_MODE_TYPE_DRIVER, 115500, 1024, 1072,
1104, 1184, 0, 768, 771, 775, 813, 0,
DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC) },
/* 1152x864@75Hz */
{ DRM_MODE("1152x864", DRM_MODE_TYPE_DRIVER, 108000, 1152, 1216,
1344, 1600, 0, 864, 865, 868, 900, 0,
DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
/* 1280x768@60Hz RB */
{ DRM_MODE("1280x768", DRM_MODE_TYPE_DRIVER, 68250, 1280, 1328,
1360, 1440, 0, 768, 771, 778, 790, 0,
DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC) },
/* 1280x768@60Hz */
{ DRM_MODE("1280x768", DRM_MODE_TYPE_DRIVER, 79500, 1280, 1344,
1472, 1664, 0, 768, 771, 778, 798, 0,
DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
/* 1280x768@75Hz */
{ DRM_MODE("1280x768", DRM_MODE_TYPE_DRIVER, 102250, 1280, 1360,
1488, 1696, 0, 768, 771, 778, 805, 0,
DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC) },
/* 1280x768@85Hz */
{ DRM_MODE("1280x768", DRM_MODE_TYPE_DRIVER, 117500, 1280, 1360,
1496, 1712, 0, 768, 771, 778, 809, 0,
DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
/* 1280x768@120Hz RB */
{ DRM_MODE("1280x768", DRM_MODE_TYPE_DRIVER, 140250, 1280, 1328,
1360, 1440, 0, 768, 771, 778, 813, 0,
DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC) },
/* 1280x800@60Hz RB */
{ DRM_MODE("1280x800", DRM_MODE_TYPE_DRIVER, 71000, 1280, 1328,
1360, 1440, 0, 800, 803, 809, 823, 0,
DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC) },
/* 1280x800@60Hz */
{ DRM_MODE("1280x800", DRM_MODE_TYPE_DRIVER, 83500, 1280, 1352,
1480, 1680, 0, 800, 803, 809, 831, 0,
DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC) },
/* 1280x800@75Hz */
{ DRM_MODE("1280x800", DRM_MODE_TYPE_DRIVER, 106500, 1280, 1360,
1488, 1696, 0, 800, 803, 809, 838, 0,
DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
/* 1280x800@85Hz */
{ DRM_MODE("1280x800", DRM_MODE_TYPE_DRIVER, 122500, 1280, 1360,
1496, 1712, 0, 800, 803, 809, 843, 0,
DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
/* 1280x800@120Hz RB */
{ DRM_MODE("1280x800", DRM_MODE_TYPE_DRIVER, 146250, 1280, 1328,
1360, 1440, 0, 800, 803, 809, 847, 0,
DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC) },
/* 1280x960@60Hz */
{ DRM_MODE("1280x960", DRM_MODE_TYPE_DRIVER, 108000, 1280, 1376,
1488, 1800, 0, 960, 961, 964, 1000, 0,
DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
/* 1280x960@85Hz */
{ DRM_MODE("1280x960", DRM_MODE_TYPE_DRIVER, 148500, 1280, 1344,
1504, 1728, 0, 960, 961, 964, 1011, 0,
DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
/* 1280x960@120Hz RB */
{ DRM_MODE("1280x960", DRM_MODE_TYPE_DRIVER, 175500, 1280, 1328,
1360, 1440, 0, 960, 963, 967, 1017, 0,
DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC) },
/* 1280x1024@60Hz */
{ DRM_MODE("1280x1024", DRM_MODE_TYPE_DRIVER, 108000, 1280, 1328,
1440, 1688, 0, 1024, 1025, 1028, 1066, 0,
DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
/* 1280x1024@75Hz */
{ DRM_MODE("1280x1024", DRM_MODE_TYPE_DRIVER, 135000, 1280, 1296,
1440, 1688, 0, 1024, 1025, 1028, 1066, 0,
DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
/* 1280x1024@85Hz */
{ DRM_MODE("1280x1024", DRM_MODE_TYPE_DRIVER, 157500, 1280, 1344,
1504, 1728, 0, 1024, 1025, 1028, 1072, 0,
DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
/* 1280x1024@120Hz RB */
{ DRM_MODE("1280x1024", DRM_MODE_TYPE_DRIVER, 187250, 1280, 1328,
1360, 1440, 0, 1024, 1027, 1034, 1084, 0,
DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC) },
/* 1360x768@60Hz */
{ DRM_MODE("1360x768", DRM_MODE_TYPE_DRIVER, 85500, 1360, 1424,
1536, 1792, 0, 768, 771, 777, 795, 0,
DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
/* 1360x768@120Hz RB */
{ DRM_MODE("1360x768", DRM_MODE_TYPE_DRIVER, 148250, 1360, 1408,
1440, 1520, 0, 768, 771, 776, 813, 0,
DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC) },
/* 1400x1050@60Hz RB */
{ DRM_MODE("1400x1050", DRM_MODE_TYPE_DRIVER, 101000, 1400, 1448,
1480, 1560, 0, 1050, 1053, 1057, 1080, 0,
DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC) },
/* 1400x1050@60Hz */
{ DRM_MODE("1400x1050", DRM_MODE_TYPE_DRIVER, 121750, 1400, 1488,
1632, 1864, 0, 1050, 1053, 1057, 1089, 0,
DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
/* 1400x1050@75Hz */
{ DRM_MODE("1400x1050", DRM_MODE_TYPE_DRIVER, 156000, 1400, 1504,
1648, 1896, 0, 1050, 1053, 1057, 1099, 0,
DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
/* 1400x1050@85Hz */
{ DRM_MODE("1400x1050", DRM_MODE_TYPE_DRIVER, 179500, 1400, 1504,
1656, 1912, 0, 1050, 1053, 1057, 1105, 0,
DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
/* 1400x1050@120Hz RB */
{ DRM_MODE("1400x1050", DRM_MODE_TYPE_DRIVER, 208000, 1400, 1448,
1480, 1560, 0, 1050, 1053, 1057, 1112, 0,
DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC) },
/* 1440x900@60Hz RB */
{ DRM_MODE("1440x900", DRM_MODE_TYPE_DRIVER, 88750, 1440, 1488,
1520, 1600, 0, 900, 903, 909, 926, 0,
DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC) },
/* 1440x900@60Hz */
{ DRM_MODE("1440x900", DRM_MODE_TYPE_DRIVER, 106500, 1440, 1520,
1672, 1904, 0, 900, 903, 909, 934, 0,
DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
/* 1440x900@75Hz */
{ DRM_MODE("1440x900", DRM_MODE_TYPE_DRIVER, 136750, 1440, 1536,
1688, 1936, 0, 900, 903, 909, 942, 0,
DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
/* 1440x900@85Hz */
{ DRM_MODE("1440x900", DRM_MODE_TYPE_DRIVER, 157000, 1440, 1544,
1696, 1952, 0, 900, 903, 909, 948, 0,
DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
/* 1440x900@120Hz RB */
{ DRM_MODE("1440x900", DRM_MODE_TYPE_DRIVER, 182750, 1440, 1488,
1520, 1600, 0, 900, 903, 909, 953, 0,
DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC) },
/* 1600x1200@60Hz */
{ DRM_MODE("1600x1200", DRM_MODE_TYPE_DRIVER, 162000, 1600, 1664,
1856, 2160, 0, 1200, 1201, 1204, 1250, 0,
DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
/* 1600x1200@65Hz */
{ DRM_MODE("1600x1200", DRM_MODE_TYPE_DRIVER, 175500, 1600, 1664,
1856, 2160, 0, 1200, 1201, 1204, 1250, 0,
DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
/* 1600x1200@70Hz */
{ DRM_MODE("1600x1200", DRM_MODE_TYPE_DRIVER, 189000, 1600, 1664,
1856, 2160, 0, 1200, 1201, 1204, 1250, 0,
DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
/* 1600x1200@75Hz */
{ DRM_MODE("1600x1200", DRM_MODE_TYPE_DRIVER, 202500, 1600, 1664,
1856, 2160, 0, 1200, 1201, 1204, 1250, 0,
DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
/* 1600x1200@85Hz */
{ DRM_MODE("1600x1200", DRM_MODE_TYPE_DRIVER, 229500, 1600, 1664,
1856, 2160, 0, 1200, 1201, 1204, 1250, 0,
DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
/* 1600x1200@120Hz RB */
{ DRM_MODE("1600x1200", DRM_MODE_TYPE_DRIVER, 268250, 1600, 1648,
1680, 1760, 0, 1200, 1203, 1207, 1271, 0,
DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC) },
/* 1680x1050@60Hz RB */
{ DRM_MODE("1680x1050", DRM_MODE_TYPE_DRIVER, 119000, 1680, 1728,
1760, 1840, 0, 1050, 1053, 1059, 1080, 0,
DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC) },
/* 1680x1050@60Hz */
{ DRM_MODE("1680x1050", DRM_MODE_TYPE_DRIVER, 146250, 1680, 1784,
1960, 2240, 0, 1050, 1053, 1059, 1089, 0,
DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
/* 1680x1050@75Hz */
{ DRM_MODE("1680x1050", DRM_MODE_TYPE_DRIVER, 187000, 1680, 1800,
1976, 2272, 0, 1050, 1053, 1059, 1099, 0,
DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
/* 1680x1050@85Hz */
{ DRM_MODE("1680x1050", DRM_MODE_TYPE_DRIVER, 214750, 1680, 1808,
1984, 2288, 0, 1050, 1053, 1059, 1105, 0,
DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
/* 1680x1050@120Hz RB */
{ DRM_MODE("1680x1050", DRM_MODE_TYPE_DRIVER, 245500, 1680, 1728,
1760, 1840, 0, 1050, 1053, 1059, 1112, 0,
DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC) },
/* 1792x1344@60Hz */
{ DRM_MODE("1792x1344", DRM_MODE_TYPE_DRIVER, 204750, 1792, 1920,
2120, 2448, 0, 1344, 1345, 1348, 1394, 0,
DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
/* 1792x1344@75Hz */
{ DRM_MODE("1792x1344", DRM_MODE_TYPE_DRIVER, 261000, 1792, 1888,
2104, 2456, 0, 1344, 1345, 1348, 1417, 0,
DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
/* 1792x1344@120Hz RB */
{ DRM_MODE("1792x1344", DRM_MODE_TYPE_DRIVER, 333250, 1792, 1840,
1872, 1952, 0, 1344, 1347, 1351, 1423, 0,
DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC) },
/* 1856x1392@60Hz */
{ DRM_MODE("1856x1392", DRM_MODE_TYPE_DRIVER, 218250, 1856, 1952,
2176, 2528, 0, 1392, 1393, 1396, 1439, 0,
DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
/* 1856x1392@75Hz */
{ DRM_MODE("1856x1392", DRM_MODE_TYPE_DRIVER, 288000, 1856, 1984,
2208, 2560, 0, 1392, 1395, 1399, 1500, 0,
DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
/* 1856x1392@120Hz RB */
{ DRM_MODE("1856x1392", DRM_MODE_TYPE_DRIVER, 356500, 1856, 1904,
1936, 2016, 0, 1392, 1395, 1399, 1474, 0,
DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC) },
/* 1920x1200@60Hz RB */
{ DRM_MODE("1920x1200", DRM_MODE_TYPE_DRIVER, 154000, 1920, 1968,
2000, 2080, 0, 1200, 1203, 1209, 1235, 0,
DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC) },
/* 1920x1200@60Hz */
{ DRM_MODE("1920x1200", DRM_MODE_TYPE_DRIVER, 193250, 1920, 2056,
2256, 2592, 0, 1200, 1203, 1209, 1245, 0,
DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
/* 1920x1200@75Hz */
{ DRM_MODE("1920x1200", DRM_MODE_TYPE_DRIVER, 245250, 1920, 2056,
2264, 2608, 0, 1200, 1203, 1209, 1255, 0,
DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
/* 1920x1200@85Hz */
{ DRM_MODE("1920x1200", DRM_MODE_TYPE_DRIVER, 281250, 1920, 2064,
2272, 2624, 0, 1200, 1203, 1209, 1262, 0,
DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
/* 1920x1200@120Hz RB */
{ DRM_MODE("1920x1200", DRM_MODE_TYPE_DRIVER, 317000, 1920, 1968,
2000, 2080, 0, 1200, 1203, 1209, 1271, 0,
DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC) },
/* 1920x1440@60Hz */
{ DRM_MODE("1920x1440", DRM_MODE_TYPE_DRIVER, 234000, 1920, 2048,
2256, 2600, 0, 1440, 1441, 1444, 1500, 0,
DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
/* 1920x1440@75Hz */
{ DRM_MODE("1920x1440", DRM_MODE_TYPE_DRIVER, 297000, 1920, 2064,
2288, 2640, 0, 1440, 1441, 1444, 1500, 0,
DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
/* 1920x1440@120Hz RB */
{ DRM_MODE("1920x1440", DRM_MODE_TYPE_DRIVER, 380500, 1920, 1968,
2000, 2080, 0, 1440, 1443, 1447, 1525, 0,
DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC) },
/* 2560x1600@60Hz RB */
{ DRM_MODE("2560x1600", DRM_MODE_TYPE_DRIVER, 268500, 2560, 2608,
2640, 2720, 0, 1600, 1603, 1609, 1646, 0,
DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC) },
/* 2560x1600@60Hz */
{ DRM_MODE("2560x1600", DRM_MODE_TYPE_DRIVER, 348500, 2560, 2752,
3032, 3504, 0, 1600, 1603, 1609, 1658, 0,
DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
/* 2560x1600@75HZ */
{ DRM_MODE("2560x1600", DRM_MODE_TYPE_DRIVER, 443250, 2560, 2768,
3048, 3536, 0, 1600, 1603, 1609, 1672, 0,
DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
/* 2560x1600@85HZ */
{ DRM_MODE("2560x1600", DRM_MODE_TYPE_DRIVER, 505250, 2560, 2768,
3048, 3536, 0, 1600, 1603, 1609, 1682, 0,
DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
/* 2560x1600@120Hz RB */
{ DRM_MODE("2560x1600", DRM_MODE_TYPE_DRIVER, 552750, 2560, 2608,
2640, 2720, 0, 1600, 1603, 1609, 1694, 0,
DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC) },
};
static const struct drm_display_mode edid_est_modes[] = {
{ DRM_MODE("800x600", DRM_MODE_TYPE_DRIVER, 40000, 800, 840,
968, 1056, 0, 600, 601, 605, 628, 0,
DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) }, /* 800x600@60Hz */
{ DRM_MODE("800x600", DRM_MODE_TYPE_DRIVER, 36000, 800, 824,
896, 1024, 0, 600, 601, 603, 625, 0,
DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) }, /* 800x600@56Hz */
{ DRM_MODE("640x480", DRM_MODE_TYPE_DRIVER, 31500, 640, 656,
720, 840, 0, 480, 481, 484, 500, 0,
DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC) }, /* 640x480@75Hz */
{ DRM_MODE("640x480", DRM_MODE_TYPE_DRIVER, 31500, 640, 664,
704, 832, 0, 480, 489, 491, 520, 0,
DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC) }, /* 640x480@72Hz */
{ DRM_MODE("640x480", DRM_MODE_TYPE_DRIVER, 30240, 640, 704,
768, 864, 0, 480, 483, 486, 525, 0,
DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC) }, /* 640x480@67Hz */
{ DRM_MODE("640x480", DRM_MODE_TYPE_DRIVER, 25200, 640, 656,
752, 800, 0, 480, 490, 492, 525, 0,
DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC) }, /* 640x480@60Hz */
{ DRM_MODE("720x400", DRM_MODE_TYPE_DRIVER, 35500, 720, 738,
846, 900, 0, 400, 421, 423, 449, 0,
DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC) }, /* 720x400@88Hz */
{ DRM_MODE("720x400", DRM_MODE_TYPE_DRIVER, 28320, 720, 738,
846, 900, 0, 400, 412, 414, 449, 0,
DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) }, /* 720x400@70Hz */
{ DRM_MODE("1280x1024", DRM_MODE_TYPE_DRIVER, 135000, 1280, 1296,
1440, 1688, 0, 1024, 1025, 1028, 1066, 0,
DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) }, /* 1280x1024@75Hz */
{ DRM_MODE("1024x768", DRM_MODE_TYPE_DRIVER, 78800, 1024, 1040,
1136, 1312, 0, 768, 769, 772, 800, 0,
DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) }, /* 1024x768@75Hz */
{ DRM_MODE("1024x768", DRM_MODE_TYPE_DRIVER, 75000, 1024, 1048,
1184, 1328, 0, 768, 771, 777, 806, 0,
DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC) }, /* 1024x768@70Hz */
{ DRM_MODE("1024x768", DRM_MODE_TYPE_DRIVER, 65000, 1024, 1048,
1184, 1344, 0, 768, 771, 777, 806, 0,
DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC) }, /* 1024x768@60Hz */
{ DRM_MODE("1024x768i", DRM_MODE_TYPE_DRIVER,44900, 1024, 1032,
1208, 1264, 0, 768, 768, 776, 817, 0,
DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC | DRM_MODE_FLAG_INTERLACE) }, /* 1024x768@43Hz */
{ DRM_MODE("832x624", DRM_MODE_TYPE_DRIVER, 57284, 832, 864,
928, 1152, 0, 624, 625, 628, 667, 0,
DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC) }, /* 832x624@75Hz */
{ DRM_MODE("800x600", DRM_MODE_TYPE_DRIVER, 49500, 800, 816,
896, 1056, 0, 600, 601, 604, 625, 0,
DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) }, /* 800x600@75Hz */
{ DRM_MODE("800x600", DRM_MODE_TYPE_DRIVER, 50000, 800, 856,
976, 1040, 0, 600, 637, 643, 666, 0,
DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) }, /* 800x600@72Hz */
{ DRM_MODE("1152x864", DRM_MODE_TYPE_DRIVER, 108000, 1152, 1216,
1344, 1600, 0, 864, 865, 868, 900, 0,
DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) }, /* 1152x864@75Hz */
};
struct minimode {
short w;
short h;
short r;
short rb;
};
static const struct minimode est3_modes[] = {
/* byte 6 */
{ 640, 350, 85, 0 },
{ 640, 400, 85, 0 },
{ 720, 400, 85, 0 },
{ 640, 480, 85, 0 },
{ 848, 480, 60, 0 },
{ 800, 600, 85, 0 },
{ 1024, 768, 85, 0 },
{ 1152, 864, 75, 0 },
/* byte 7 */
{ 1280, 768, 60, 1 },
{ 1280, 768, 60, 0 },
{ 1280, 768, 75, 0 },
{ 1280, 768, 85, 0 },
{ 1280, 960, 60, 0 },
{ 1280, 960, 85, 0 },
{ 1280, 1024, 60, 0 },
{ 1280, 1024, 85, 0 },
/* byte 8 */
{ 1360, 768, 60, 0 },
{ 1440, 900, 60, 1 },
{ 1440, 900, 60, 0 },
{ 1440, 900, 75, 0 },
{ 1440, 900, 85, 0 },
{ 1400, 1050, 60, 1 },
{ 1400, 1050, 60, 0 },
{ 1400, 1050, 75, 0 },
/* byte 9 */
{ 1400, 1050, 85, 0 },
{ 1680, 1050, 60, 1 },
{ 1680, 1050, 60, 0 },
{ 1680, 1050, 75, 0 },
{ 1680, 1050, 85, 0 },
{ 1600, 1200, 60, 0 },
{ 1600, 1200, 65, 0 },
{ 1600, 1200, 70, 0 },
/* byte 10 */
{ 1600, 1200, 75, 0 },
{ 1600, 1200, 85, 0 },
{ 1792, 1344, 60, 0 },
{ 1792, 1344, 85, 0 },
{ 1856, 1392, 60, 0 },
{ 1856, 1392, 75, 0 },
{ 1920, 1200, 60, 1 },
{ 1920, 1200, 60, 0 },
/* byte 11 */
{ 1920, 1200, 75, 0 },
{ 1920, 1200, 85, 0 },
{ 1920, 1440, 60, 0 },
{ 1920, 1440, 75, 0 },
};
static const struct minimode extra_modes[] = {
{ 1024, 576, 60, 0 },
{ 1366, 768, 60, 0 },
{ 1600, 900, 60, 0 },
{ 1680, 945, 60, 0 },
{ 1920, 1080, 60, 0 },
{ 2048, 1152, 60, 0 },
{ 2048, 1536, 60, 0 },
};
/*
* Probably taken from CEA-861 spec.
* This table is converted from xorg's hw/xfree86/modes/xf86EdidModes.c.
*/
static const struct drm_display_mode edid_cea_modes[] = {
/* 1 - 640x480@60Hz */
{ .vrefresh = 60, DRM_MODE("640x480", DRM_MODE_TYPE_DRIVER, 25175, 640, 656,
752, 800, 0, 480, 490, 492, 525, 0,
DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC) },
/* 2 - 720x480@60Hz */
{ .vrefresh = 60, DRM_MODE("720x480", DRM_MODE_TYPE_DRIVER, 27000, 720, 736,
798, 858, 0, 480, 489, 495, 525, 0,
DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC) },
/* 3 - 720x480@60Hz */
{ .vrefresh = 60, DRM_MODE("720x480", DRM_MODE_TYPE_DRIVER, 27000, 720, 736,
798, 858, 0, 480, 489, 495, 525, 0,
DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC) },
/* 4 - 1280x720@60Hz */
{ .vrefresh = 60, DRM_MODE("1280x720", DRM_MODE_TYPE_DRIVER, 74250, 1280, 1390,
1430, 1650, 0, 720, 725, 730, 750, 0,
DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC)},
/* 5 - 1920x1080i@60Hz */
{ .vrefresh = 60, DRM_MODE("1920x1080i", DRM_MODE_TYPE_DRIVER, 74250, 1920, 2008,
2052, 2200, 0, 1080, 1084, 1094, 1125, 0,
DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC |
DRM_MODE_FLAG_INTERLACE)},
/* 6 - 1440x480i@60Hz */
{ .vrefresh = 60, DRM_MODE("1440x480i", DRM_MODE_TYPE_DRIVER, 27000, 1440, 1478,
1602, 1716, 0, 480, 488, 494, 525, 0,
DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC |
DRM_MODE_FLAG_INTERLACE | DRM_MODE_FLAG_DBLCLK)},
/* 7 - 1440x480i@60Hz */
{ .vrefresh = 60, DRM_MODE("1440x480i", DRM_MODE_TYPE_DRIVER, 27000, 1440, 1478,
1602, 1716, 0, 480, 488, 494, 525, 0,
DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC |
DRM_MODE_FLAG_INTERLACE | DRM_MODE_FLAG_DBLCLK)},
/* 8 - 1440x240@60Hz */
{ .vrefresh = 60, DRM_MODE("1440x240", DRM_MODE_TYPE_DRIVER, 27000, 1440, 1478,
1602, 1716, 0, 240, 244, 247, 262, 0,
DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC |
DRM_MODE_FLAG_DBLCLK)},
/* 9 - 1440x240@60Hz */
{ .vrefresh = 60, DRM_MODE("1440x240", DRM_MODE_TYPE_DRIVER, 27000, 1440, 1478,
1602, 1716, 0, 240, 244, 247, 262, 0,
DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC |
DRM_MODE_FLAG_DBLCLK)},
/* 10 - 2880x480i@60Hz */
{ .vrefresh = 60, DRM_MODE("2880x480i", DRM_MODE_TYPE_DRIVER, 54000, 2880, 2956,
3204, 3432, 0, 480, 488, 494, 525, 0,
DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC |
DRM_MODE_FLAG_INTERLACE)},
/* 11 - 2880x480i@60Hz */
{ .vrefresh = 60, DRM_MODE("2880x480i", DRM_MODE_TYPE_DRIVER, 54000, 2880, 2956,
3204, 3432, 0, 480, 488, 494, 525, 0,
DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC |
DRM_MODE_FLAG_INTERLACE)},
/* 12 - 2880x240@60Hz */
{ .vrefresh = 60, DRM_MODE("2880x240", DRM_MODE_TYPE_DRIVER, 54000, 2880, 2956,
3204, 3432, 0, 240, 244, 247, 262, 0,
DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC)},
/* 13 - 2880x240@60Hz */
{ .vrefresh = 60, DRM_MODE("2880x240", DRM_MODE_TYPE_DRIVER, 54000, 2880, 2956,
3204, 3432, 0, 240, 244, 247, 262, 0,
DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC)},
/* 14 - 1440x480@60Hz */
{ .vrefresh = 60, DRM_MODE("1440x480", DRM_MODE_TYPE_DRIVER, 54000, 1440, 1472,
1596, 1716, 0, 480, 489, 495, 525, 0,
DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC)},
/* 15 - 1440x480@60Hz */
{ .vrefresh = 60, DRM_MODE("1440x480", DRM_MODE_TYPE_DRIVER, 54000, 1440, 1472,
1596, 1716, 0, 480, 489, 495, 525, 0,
DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC)},
/* 16 - 1920x1080@60Hz */
{ .vrefresh = 60, DRM_MODE("1920x1080", DRM_MODE_TYPE_DRIVER, 148500, 1920, 2008,
2052, 2200, 0, 1080, 1084, 1089, 1125, 0,
DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC)},
/* 17 - 720x576@50Hz */
{ .vrefresh = 50, DRM_MODE("720x576", DRM_MODE_TYPE_DRIVER, 27000, 720, 732,
796, 864, 0, 576, 581, 586, 625, 0,
DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC)},
/* 18 - 720x576@50Hz */
{ .vrefresh = 50, DRM_MODE("720x576", DRM_MODE_TYPE_DRIVER, 27000, 720, 732,
796, 864, 0, 576, 581, 586, 625, 0,
DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC)},
/* 19 - 1280x720@50Hz */
{ .vrefresh = 50, DRM_MODE("1280x720", DRM_MODE_TYPE_DRIVER, 74250, 1280, 1720,
1760, 1980, 0, 720, 725, 730, 750, 0,
DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC)},
/* 20 - 1920x1080i@50Hz */
{ .vrefresh = 50, DRM_MODE("1920x1080i", DRM_MODE_TYPE_DRIVER, 74250, 1920, 2448,
2492, 2640, 0, 1080, 1084, 1094, 1125, 0,
DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC |
DRM_MODE_FLAG_INTERLACE)},
/* 21 - 1440x576i@50Hz */
{ .vrefresh = 50, DRM_MODE("1440x576i", DRM_MODE_TYPE_DRIVER, 27000, 1440, 1464,
1590, 1728, 0, 576, 580, 586, 625, 0,
DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC |
DRM_MODE_FLAG_INTERLACE | DRM_MODE_FLAG_DBLCLK)},
/* 22 - 1440x576i@50Hz */
{ .vrefresh = 50, DRM_MODE("1440x576i", DRM_MODE_TYPE_DRIVER, 27000, 1440, 1464,
1590, 1728, 0, 576, 580, 586, 625, 0,
DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC |
DRM_MODE_FLAG_INTERLACE | DRM_MODE_FLAG_DBLCLK)},
/* 23 - 1440x288@50Hz */
{ .vrefresh = 50, DRM_MODE("1440x288", DRM_MODE_TYPE_DRIVER, 27000, 1440, 1464,
1590, 1728, 0, 288, 290, 293, 312, 0,
DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC |
DRM_MODE_FLAG_DBLCLK)},
/* 24 - 1440x288@50Hz */
{ .vrefresh = 50, DRM_MODE("1440x288", DRM_MODE_TYPE_DRIVER, 27000, 1440, 1464,
1590, 1728, 0, 288, 290, 293, 312, 0,
DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC |
DRM_MODE_FLAG_DBLCLK)},
/* 25 - 2880x576i@50Hz */
{ .vrefresh = 50, DRM_MODE("2880x576i", DRM_MODE_TYPE_DRIVER, 54000, 2880, 2928,
3180, 3456, 0, 576, 580, 586, 625, 0,
DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC |
DRM_MODE_FLAG_INTERLACE)},
/* 26 - 2880x576i@50Hz */
{ .vrefresh = 50, DRM_MODE("2880x576i", DRM_MODE_TYPE_DRIVER, 54000, 2880, 2928,
3180, 3456, 0, 576, 580, 586, 625, 0,
DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC |
DRM_MODE_FLAG_INTERLACE)},
/* 27 - 2880x288@50Hz */
{ .vrefresh = 50, DRM_MODE("2880x288", DRM_MODE_TYPE_DRIVER, 54000, 2880, 2928,
3180, 3456, 0, 288, 290, 293, 312, 0,
DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC)},
/* 28 - 2880x288@50Hz */
{ .vrefresh = 50, DRM_MODE("2880x288", DRM_MODE_TYPE_DRIVER, 54000, 2880, 2928,
3180, 3456, 0, 288, 290, 293, 312, 0,
DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC)},
/* 29 - 1440x576@50Hz */
{ .vrefresh = 50, DRM_MODE("1440x576", DRM_MODE_TYPE_DRIVER, 54000, 1440, 1464,
1592, 1728, 0, 576, 581, 586, 625, 0,
DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC)},
/* 30 - 1440x576@50Hz */
{ .vrefresh = 50, DRM_MODE("1440x576", DRM_MODE_TYPE_DRIVER, 54000, 1440, 1464,
1592, 1728, 0, 576, 581, 586, 625, 0,
DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC)},
/* 31 - 1920x1080@50Hz */
{ .vrefresh = 50, DRM_MODE("1920x1080", DRM_MODE_TYPE_DRIVER, 148500, 1920, 2448,
2492, 2640, 0, 1080, 1084, 1089, 1125, 0,
DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC)},
/* 32 - 1920x1080@24Hz */
{ .vrefresh = 50, DRM_MODE("1920x1080", DRM_MODE_TYPE_DRIVER, 74250, 1920, 2558,
2602, 2750, 0, 1080, 1084, 1089, 1125, 0,
DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC)},
/* 33 - 1920x1080@25Hz */
{ .vrefresh = 25, DRM_MODE("1920x1080", DRM_MODE_TYPE_DRIVER, 74250, 1920, 2448,
2492, 2640, 0, 1080, 1084, 1089, 1125, 0,
DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC)},
/* 34 - 1920x1080@30Hz */
{ .vrefresh = 30, DRM_MODE("1920x1080", DRM_MODE_TYPE_DRIVER, 74250, 1920, 2008,
2052, 2200, 0, 1080, 1084, 1089, 1125, 0,
DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC)},
/* 35 - 2880x480@60Hz */
{ .vrefresh = 60, DRM_MODE("2880x480", DRM_MODE_TYPE_DRIVER, 108000, 2880, 2944,
3192, 3432, 0, 480, 489, 495, 525, 0,
DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC)},
/* 36 - 2880x480@60Hz */
{ .vrefresh = 60, DRM_MODE("2880x480", DRM_MODE_TYPE_DRIVER, 108000, 2880, 2944,
3192, 3432, 0, 480, 489, 495, 525, 0,
DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC)},
/* 37 - 2880x576@50Hz */
{ .vrefresh = 50, DRM_MODE("2880x576", DRM_MODE_TYPE_DRIVER, 108000, 2880, 2928,
3184, 3456, 0, 576, 581, 586, 625, 0,
DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC)},
/* 38 - 2880x576@50Hz */
{ .vrefresh = 50, DRM_MODE("2880x576", DRM_MODE_TYPE_DRIVER, 108000, 2880, 2928,
3184, 3456, 0, 576, 581, 586, 625, 0,
DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC)},
/* 39 - 1920x1080i@50Hz */
{ .vrefresh = 50, DRM_MODE("1920x1080i", DRM_MODE_TYPE_DRIVER, 72000, 1920, 1952,
2120, 2304, 0, 1080, 1126, 1136, 1250, 0,
DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC |
DRM_MODE_FLAG_INTERLACE)},
/* 40 - 1920x1080i@100Hz */
{ .vrefresh = 100, DRM_MODE("1920x1080i", DRM_MODE_TYPE_DRIVER, 148500, 1920, 2448,
2492, 2640, 0, 1080, 1084, 1094, 1125, 0,
DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC |
DRM_MODE_FLAG_INTERLACE)},
/* 41 - 1280x720@100Hz */
{ .vrefresh = 100, DRM_MODE("1280x720", DRM_MODE_TYPE_DRIVER, 148500, 1280, 1720,
1760, 1980, 0, 720, 725, 730, 750, 0,
DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC)},
/* 42 - 720x576@100Hz */
{ .vrefresh = 100, DRM_MODE("720x576", DRM_MODE_TYPE_DRIVER, 54000, 720, 732,
796, 864, 0, 576, 581, 586, 625, 0,
DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC)},
/* 43 - 720x576@100Hz */
{ .vrefresh = 100, DRM_MODE("720x576", DRM_MODE_TYPE_DRIVER, 54000, 720, 732,
796, 864, 0, 576, 581, 586, 625, 0,
DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC)},
/* 44 - 1440x576i@100Hz */
{ .vrefresh = 100, DRM_MODE("1440x576", DRM_MODE_TYPE_DRIVER, 54000, 1440, 1464,
1590, 1728, 0, 576, 580, 586, 625, 0,
DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC |
DRM_MODE_FLAG_DBLCLK)},
/* 45 - 1440x576i@100Hz */
{ .vrefresh = 100, DRM_MODE("1440x576", DRM_MODE_TYPE_DRIVER, 54000, 1440, 1464,
1590, 1728, 0, 576, 580, 586, 625, 0,
DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC |
DRM_MODE_FLAG_DBLCLK)},
/* 46 - 1920x1080i@120Hz */
{ .vrefresh = 120, DRM_MODE("1920x1080i", DRM_MODE_TYPE_DRIVER, 148500, 1920, 2008,
2052, 2200, 0, 1080, 1084, 1094, 1125, 0,
DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC |
DRM_MODE_FLAG_INTERLACE)},
/* 47 - 1280x720@120Hz */
{ .vrefresh = 120, DRM_MODE("1280x720", DRM_MODE_TYPE_DRIVER, 148500, 1280, 1390,
1430, 1650, 0, 720, 725, 730, 750, 0,
DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC)},
/* 48 - 720x480@120Hz */
{ .vrefresh = 120, DRM_MODE("720x480", DRM_MODE_TYPE_DRIVER, 54000, 720, 736,
798, 858, 0, 480, 489, 495, 525, 0,
DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC)},
/* 49 - 720x480@120Hz */
{ .vrefresh = 120, DRM_MODE("720x480", DRM_MODE_TYPE_DRIVER, 54000, 720, 736,
798, 858, 0, 480, 489, 495, 525, 0,
DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC)},
/* 50 - 1440x480i@120Hz */
{ .vrefresh = 120, DRM_MODE("1440x480i", DRM_MODE_TYPE_DRIVER, 54000, 1440, 1478,
1602, 1716, 0, 480, 488, 494, 525, 0,
DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC |
DRM_MODE_FLAG_INTERLACE | DRM_MODE_FLAG_DBLCLK)},
/* 51 - 1440x480i@120Hz */
{ .vrefresh = 120, DRM_MODE("1440x480i", DRM_MODE_TYPE_DRIVER, 54000, 1440, 1478,
1602, 1716, 0, 480, 488, 494, 525, 0,
DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC |
DRM_MODE_FLAG_INTERLACE | DRM_MODE_FLAG_DBLCLK)},
/* 52 - 720x576@200Hz */
{ .vrefresh = 200, DRM_MODE("720x576", DRM_MODE_TYPE_DRIVER, 108000, 720, 732,
796, 864, 0, 576, 581, 586, 625, 0,
DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC)},
/* 53 - 720x576@200Hz */
{ .vrefresh = 200, DRM_MODE("720x576", DRM_MODE_TYPE_DRIVER, 108000, 720, 732,
796, 864, 0, 576, 581, 586, 625, 0,
DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC)},
/* 54 - 1440x576i@200Hz */
{ .vrefresh = 200, DRM_MODE("1440x576i", DRM_MODE_TYPE_DRIVER, 108000, 1440, 1464,
1590, 1728, 0, 576, 580, 586, 625, 0,
DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC |
DRM_MODE_FLAG_INTERLACE | DRM_MODE_FLAG_DBLCLK)},
/* 55 - 1440x576i@200Hz */
{ .vrefresh = 200, DRM_MODE("1440x576i", DRM_MODE_TYPE_DRIVER, 108000, 1440, 1464,
1590, 1728, 0, 576, 580, 586, 625, 0,
DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC |
DRM_MODE_FLAG_INTERLACE | DRM_MODE_FLAG_DBLCLK)},
/* 56 - 720x480@240Hz */
{ .vrefresh = 240, DRM_MODE("720x480", DRM_MODE_TYPE_DRIVER, 108000, 720, 736,
798, 858, 0, 480, 489, 495, 525, 0,
DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC)},
/* 57 - 720x480@240Hz */
{ .vrefresh = 240, DRM_MODE("720x480", DRM_MODE_TYPE_DRIVER, 108000, 720, 736,
798, 858, 0, 480, 489, 495, 525, 0,
DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC)},
/* 58 - 1440x480i@240 */
{ .vrefresh = 240, DRM_MODE("1440x480i", DRM_MODE_TYPE_DRIVER, 108000, 1440, 1478,
1602, 1716, 0, 480, 488, 494, 525, 0,
DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC |
DRM_MODE_FLAG_INTERLACE | DRM_MODE_FLAG_DBLCLK)},
/* 59 - 1440x480i@240 */
{ .vrefresh = 240, DRM_MODE("1440x480i", DRM_MODE_TYPE_DRIVER, 108000, 1440, 1478,
1602, 1716, 0, 480, 488, 494, 525, 0,
DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC |
DRM_MODE_FLAG_INTERLACE | DRM_MODE_FLAG_DBLCLK)},
/* 60 - 1280x720@24Hz */
{ .vrefresh = 24, DRM_MODE("1280x720", DRM_MODE_TYPE_DRIVER, 59400, 1280, 3040,
3080, 3300, 0, 720, 725, 730, 750, 0,
DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC)},
/* 61 - 1280x720@25Hz */
{ .vrefresh = 25, DRM_MODE("1280x720", DRM_MODE_TYPE_DRIVER, 74250, 1280, 3700,
3740, 3960, 0, 720, 725, 730, 750, 0,
DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC)},
/* 62 - 1280x720@30Hz */
{ .vrefresh = 30, DRM_MODE("1280x720", DRM_MODE_TYPE_DRIVER, 74250, 1280, 3040,
3080, 3300, 0, 720, 725, 730, 750, 0,
DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC)},
/* 63 - 1920x1080@120Hz */
{ .vrefresh = 120, DRM_MODE("1920x1080", DRM_MODE_TYPE_DRIVER, 297000, 1920, 2008,
2052, 2200, 0, 1080, 1084, 1089, 1125, 0,
DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC)},
/* 64 - 1920x1080@100Hz */
{ .vrefresh = 100, DRM_MODE("1920x1080", DRM_MODE_TYPE_DRIVER, 297000, 1920, 2448,
2492, 2640, 0, 1080, 1084, 1094, 1125, 0,
DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC)},
};
/*** DDC fetch and block validation ***/
static const u8 edid_header[] = {
0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00
};
/*
* Sanity check the header of the base EDID block. Return 8 if the header
* is perfect, down to 0 if it's totally wrong.
*/
int drm_edid_header_is_valid(const u8 *raw_edid)
{
int i, score = 0;
for (i = 0; i < sizeof(edid_header); i++)
if (raw_edid[i] == edid_header[i])
score++;
return score;
}
static int edid_fixup = 6;
/*
* Sanity check the EDID block (base or extension). Return 0 if the block
* doesn't check out, or 1 if it's valid.
*/
bool drm_edid_block_valid(u8 *raw_edid, int block, bool print_bad_edid)
{
int i;
u8 csum = 0;
struct edid *edid = (struct edid *)raw_edid;
if (!raw_edid) {
WARN_ON(1);
return false;
}
if (edid_fixup > 8 || edid_fixup < 0)
edid_fixup = 6;
if (block == 0) {
int score = drm_edid_header_is_valid(raw_edid);
if (score == 8)
DRM_DEBUG("edid header is perfect");
else if (score >= edid_fixup) {
DRM_DEBUG("Fixing EDID header, your hardware may be failing\n");
(void) memcpy(raw_edid, edid_header, sizeof(edid_header));
} else {
goto bad;
}
}
for (i = 0; i < EDID_LENGTH; i++)
csum += raw_edid[i];
if (csum) {
if (print_bad_edid) {
DRM_ERROR("EDID checksum is invalid, remainder is %d\n", csum);
}
/* allow CEA to slide through, switches mangle this */
if (raw_edid[0] != 0x02)
goto bad;
}
/* per-block-type checks */
switch (raw_edid[0]) {
case 0: /* base */
if (edid->version != 1) {
DRM_ERROR("EDID has major version %d, instead of 1\n", edid->version);
goto bad;
}
if (edid->revision > 4)
DRM_DEBUG("EDID minor > 4, assuming backward compatibility\n");
break;
default:
break;
}
return true;
bad:
if (print_bad_edid) {
DRM_DEBUG_KMS("Raw EDID:\n");
// print_hex_dump_bytes(KERN_ERR, DUMP_PREFIX_NONE, raw_edid, EDID_LENGTH);
}
return false;
}
/**
* drm_edid_is_valid - sanity check EDID data
* @edid: EDID data
*
* Sanity-check an entire EDID record (including extensions)
*/
bool drm_edid_is_valid(struct edid *edid)
{
int i;
u8 *raw = (u8 *)edid;
if (!edid)
return false;
for (i = 0; i <= edid->extensions; i++)
if (!drm_edid_block_valid(raw + i * EDID_LENGTH, i, true))
return false;
return true;
}
#define DDC_SEGMENT_ADDR 0x30
/**
* Get EDID information via I2C.
*
* \param adapter : i2c device adaptor
* \param buf : EDID data buffer to be filled
* \param len : EDID data buffer length
* \return 0 on success or -1 on failure.
*
* Try to fetch EDID information by calling i2c driver function.
*/
static int
drm_do_probe_ddc_edid(struct i2c_adapter *adapter, unsigned char *buf,
int block, int len)
{
unsigned char start = block * EDID_LENGTH;
unsigned char segment = block >> 1;
unsigned char xfers = segment ? 3 : 2;
int ret, retries = 5;
/* The core i2c driver will automatically retry the transfer if the
* adapter reports EAGAIN. However, we find that bit-banging transfers
* are susceptible to errors under a heavily loaded machine and
* generate spurious NAKs and timeouts. Retrying the transfer
* of the individual block a few times seems to overcome this.
*/
do {
struct i2c_msg msgs[] = {
{
.addr = DDC_SEGMENT_ADDR,
.flags = 0,
.len = 1,
.buf = &segment,
}, {
.addr = DDC_ADDR,
.flags = 0,
.len = 1,
.buf = &start,
}, {
.addr = DDC_ADDR,
.flags = I2C_M_RD,
.len = (u16)len,
.buf = buf,
}
};
/*
* Avoid sending the segment addr to not upset non-compliant ddc
* monitors.
*/
ret = i2c_transfer(adapter, &msgs[3 - xfers], xfers);
if (ret == -ENXIO) {
DRM_DEBUG_KMS("drm: skipping non-existent adapter %s\n",
adapter->name);
break;
}
} while (ret != xfers && --retries);
return ret == xfers ? 0 : -1;
}
static bool drm_edid_is_zero(u8 *in_edid, int length)
{
int i;
u32 *raw_edid = (u32 *)(uintptr_t)(caddr_t)in_edid;
for (i = 0; i < length / 4; i++)
if (*(raw_edid + i) != 0)
return false;
return true;
}
static struct edid *
drm_do_get_edid(struct drm_connector *connector, struct i2c_adapter *adapter)
{
int i, j = 0;
u8 *block, valid_extensions = 0;
bool print_bad_edid = !connector->bad_edid_counter;
/* try to allock max memory at first time */
if ((block = kmalloc(EDID_LENGTH * (DRM_MAX_EDID_EXT_NUM + 1), GFP_KERNEL)) == NULL)
return NULL;
/* base block fetch */
for (i = 0; i < 4; i++) {
if (drm_do_probe_ddc_edid(adapter, block, 0, EDID_LENGTH))
goto out;
if (drm_edid_block_valid(block, 0, print_bad_edid))
break;
if (i == 0 && drm_edid_is_zero(block, EDID_LENGTH)) {
connector->null_edid_counter++;
goto carp;
}
}
if (i == 4)
goto carp;
/* if there's no extensions, we're done */
if (block[0x7e] == 0)
return (struct edid *) block;
for (j = 1; j <= block[0x7e]; j++) {
for (i = 0; i < 4; i++) {
if (drm_do_probe_ddc_edid(adapter,
block + (valid_extensions + 1) * EDID_LENGTH,
j, EDID_LENGTH))
goto out;
if (drm_edid_block_valid(block + (valid_extensions + 1) * EDID_LENGTH, j, print_bad_edid)) {
valid_extensions++;
break;
}
}
if (i == 4)
DRM_ERROR("%s: Ignoring invalid EDID block %d.\n",
drm_get_connector_name(connector), j);
}
if (valid_extensions != block[0x7e]) {
block[EDID_LENGTH-1] += block[0x7e] - valid_extensions;
block[0x7e] = valid_extensions;
}
return (struct edid *) block;
carp:
if (print_bad_edid) {
DRM_DEBUG_KMS("%s: EDID block %d invalid.\n",
drm_get_connector_name(connector), j);
}
connector->bad_edid_counter++;
out:
kfree(block, EDID_LENGTH * (DRM_MAX_EDID_EXT_NUM + 1));
return NULL;
}
/**
* Probe DDC presence.
*
* \param adapter : i2c device adaptor
* \return 1 on success
*/
bool
drm_probe_ddc(struct i2c_adapter *adapter)
{
unsigned char out;
return (drm_do_probe_ddc_edid(adapter, &out, 0, 1) == 0);
}
/**
* drm_get_edid - get EDID data, if available
* @connector: connector we're probing
* @adapter: i2c adapter to use for DDC
*
* Poke the given i2c channel to grab EDID data if possible. If found,
* attach it to the connector.
*
* Return edid data or NULL if we couldn't find any.
*/
struct edid *drm_get_edid(struct drm_connector *connector,
struct i2c_adapter *adapter)
{
struct edid *edid = NULL;
if (drm_probe_ddc(adapter))
edid = drm_do_get_edid(connector, adapter);
return edid;
}
/*** EDID parsing ***/
/**
* edid_vendor - match a string against EDID's obfuscated vendor field
* @edid: EDID to match
* @vendor: vendor string
*
* Returns true if @vendor is in @edid, false otherwise
*/
static bool edid_vendor(struct edid *edid, char *vendor)
{
char edid_vendor[3];
edid_vendor[0] = ((edid->mfg_id[0] & 0x7c) >> 2) + '@';
edid_vendor[1] = (((edid->mfg_id[0] & 0x3) << 3) |
((edid->mfg_id[1] & 0xe0) >> 5)) + '@';
edid_vendor[2] = (edid->mfg_id[1] & 0x1f) + '@';
return !strncmp(edid_vendor, vendor, 3);
}
/**
* edid_get_quirks - return quirk flags for a given EDID
* @edid: EDID to process
*
* This tells subsequent routines what fixes they need to apply.
*/
static u32 edid_get_quirks(struct edid *edid)
{
struct edid_quirk *quirk;
int i;
for (i = 0; i < ARRAY_SIZE(edid_quirk_list); i++) {
quirk = &edid_quirk_list[i];
if (edid_vendor(edid, quirk->vendor) &&
(EDID_PRODUCT_ID(edid) == quirk->product_id))
return quirk->quirks;
}
return 0;
}
#define MODE_SIZE(m) ((m)->hdisplay * (m)->vdisplay)
#define MODE_REFRESH_DIFF(m,r) (abs((m)->vrefresh - target_refresh))
/**
* edid_fixup_preferred - set preferred modes based on quirk list
* @connector: has mode list to fix up
* @quirks: quirks list
*
* Walk the mode list for @connector, clearing the preferred status
* on existing modes and setting it anew for the right mode ala @quirks.
*/
static void edid_fixup_preferred(struct drm_connector *connector,
u32 quirks)
{
struct drm_display_mode *t, *cur_mode, *preferred_mode;
int target_refresh = 0;
if (list_empty(&connector->probed_modes))
return;
if (quirks & EDID_QUIRK_PREFER_LARGE_60)
target_refresh = 60;
if (quirks & EDID_QUIRK_PREFER_LARGE_75)
target_refresh = 75;
preferred_mode = list_first_entry(&connector->probed_modes,
struct drm_display_mode, head);
list_for_each_entry_safe(cur_mode, t, struct drm_display_mode, &connector->probed_modes, head) {
cur_mode->type &= ~DRM_MODE_TYPE_PREFERRED;
if (cur_mode == preferred_mode)
continue;
/* Largest mode is preferred */
if (MODE_SIZE(cur_mode) > MODE_SIZE(preferred_mode))
preferred_mode = cur_mode;
/* At a given size, try to get closest to target refresh */
if ((MODE_SIZE(cur_mode) == MODE_SIZE(preferred_mode)) &&
MODE_REFRESH_DIFF(cur_mode, target_refresh) <
MODE_REFRESH_DIFF(preferred_mode, target_refresh)) {
preferred_mode = cur_mode;
}
}
preferred_mode->type |= DRM_MODE_TYPE_PREFERRED;
}
static bool
mode_is_rb(const struct drm_display_mode *mode)
{
return (mode->htotal - mode->hdisplay == 160) &&
(mode->hsync_end - mode->hdisplay == 80) &&
(mode->hsync_end - mode->hsync_start == 32) &&
(mode->vsync_start - mode->vdisplay == 3);
}
/*
* drm_mode_find_dmt - Create a copy of a mode if present in DMT
* @dev: Device to duplicate against
* @hsize: Mode width
* @vsize: Mode height
* @fresh: Mode refresh rate
* @rb: Mode reduced-blanking-ness
*
* Walk the DMT mode list looking for a match for the given parameters.
* Return a newly allocated copy of the mode, or NULL if not found.
*/
struct drm_display_mode *drm_mode_find_dmt(struct drm_device *dev,
int hsize, int vsize, int fresh,
bool rb)
{
int i;
for (i = 0; i < ARRAY_SIZE(drm_dmt_modes); i++) {
const struct drm_display_mode *ptr = &drm_dmt_modes[i];
if (hsize != ptr->hdisplay)
continue;
if (vsize != ptr->vdisplay)
continue;
if (fresh != drm_mode_vrefresh(ptr))
continue;
if (rb != mode_is_rb(ptr))
continue;
return drm_mode_duplicate(dev, ptr);
}
return NULL;
}
typedef void detailed_cb(struct detailed_timing *timing, void *closure);
static void
cea_for_each_detailed_block(u8 *ext, detailed_cb *cb, void *closure)
{
int i, n = 0;
u8 d = ext[0x02];
u8 *det_base = ext + d;
n = (127 - d) / 18;
for (i = 0; i < n; i++)
cb((struct detailed_timing *)(det_base + 18 * i), closure);
}
static void
vtb_for_each_detailed_block(u8 *ext, detailed_cb *cb, void *closure)
{
unsigned int i, n = min((int)ext[0x02], 6);
u8 *det_base = ext + 5;
if (ext[0x01] != 1)
return; /* unknown version */
for (i = 0; i < n; i++)
cb((struct detailed_timing *)(det_base + 18 * i), closure);
}
static void
drm_for_each_detailed_block(u8 *raw_edid, detailed_cb *cb, void *closure)
{
int i;
struct edid *edid = (struct edid *)raw_edid;
if (edid == NULL)
return;
for (i = 0; i < EDID_DETAILED_TIMINGS; i++)
cb(&(edid->detailed_timings[i]), closure);
for (i = 1; i <= raw_edid[0x7e]; i++) {
u8 *ext = raw_edid + (i * EDID_LENGTH);
switch (*ext) {
case CEA_EXT:
cea_for_each_detailed_block(ext, cb, closure);
break;
case VTB_EXT:
vtb_for_each_detailed_block(ext, cb, closure);
break;
default:
break;
}
}
}
static void
is_rb(struct detailed_timing *t, void *data)
{
u8 *r = (u8 *)t;
if (r[3] == EDID_DETAIL_MONITOR_RANGE)
if (r[15] & 0x10)
*(bool *)data = true;
}
/* EDID 1.4 defines this explicitly. For EDID 1.3, we guess, badly. */
static bool
drm_monitor_supports_rb(struct edid *edid)
{
if (edid->revision >= 4) {
bool ret = false;
drm_for_each_detailed_block((u8 *)edid, is_rb, &ret);
return ret;
}
return ((edid->input & DRM_EDID_INPUT_DIGITAL) != 0);
}
static void
find_gtf2(struct detailed_timing *t, void *data)
{
u8 *r = (u8 *)t;
if (r[3] == EDID_DETAIL_MONITOR_RANGE && r[10] == 0x02)
*(u8 **)data = r;
}
/* Secondary GTF curve kicks in above some break frequency */
static int
drm_gtf2_hbreak(struct edid *edid)
{
u8 *r = NULL;
drm_for_each_detailed_block((u8 *)edid, find_gtf2, &r);
return r ? (r[12] * 2) : 0;
}
static int
drm_gtf2_2c(struct edid *edid)
{
u8 *r = NULL;
drm_for_each_detailed_block((u8 *)edid, find_gtf2, &r);
return r ? r[13] : 0;
}
static int
drm_gtf2_m(struct edid *edid)
{
u8 *r = NULL;
drm_for_each_detailed_block((u8 *)edid, find_gtf2, &r);
return r ? (r[15] << 8) + r[14] : 0;
}
static int
drm_gtf2_k(struct edid *edid)
{
u8 *r = NULL;
drm_for_each_detailed_block((u8 *)edid, find_gtf2, &r);
return r ? r[16] : 0;
}
static int
drm_gtf2_2j(struct edid *edid)
{
u8 *r = NULL;
drm_for_each_detailed_block((u8 *)edid, find_gtf2, &r);
return r ? r[17] : 0;
}
/**
* standard_timing_level - get std. timing level(CVT/GTF/DMT)
* @edid: EDID block to scan
*/
static int standard_timing_level(struct edid *edid)
{
if (edid->revision >= 2) {
if (edid->revision >= 4 && (edid->features & DRM_EDID_FEATURE_DEFAULT_GTF))
return LEVEL_CVT;
if (drm_gtf2_hbreak(edid))
return LEVEL_GTF2;
return LEVEL_GTF;
}
return LEVEL_DMT;
}
/*
* 0 is reserved. The spec says 0x01 fill for unused timings. Some old
* monitors fill with ascii space (0x20) instead.
*/
static int
bad_std_timing(u8 a, u8 b)
{
return (a == 0x00 && b == 0x00) ||
(a == 0x01 && b == 0x01) ||
(a == 0x20 && b == 0x20);
}
/**
* drm_mode_std - convert standard mode info (width, height, refresh) into mode
* @t: standard timing params
* @timing_level: standard timing level
*
* Take the standard timing params (in this case width, aspect, and refresh)
* and convert them into a real mode using CVT/GTF/DMT.
*/
static struct drm_display_mode *
drm_mode_std(struct drm_connector *connector, struct edid *edid,
struct std_timing *t, int revision)
{
struct drm_device *dev = connector->dev;
struct drm_display_mode *m, *mode = NULL;
int hsize, vsize;
int vrefresh_rate;
unsigned aspect_ratio = (t->vfreq_aspect & EDID_TIMING_ASPECT_MASK)
>> EDID_TIMING_ASPECT_SHIFT;
unsigned vfreq = (t->vfreq_aspect & EDID_TIMING_VFREQ_MASK)
>> EDID_TIMING_VFREQ_SHIFT;
int timing_level = standard_timing_level(edid);
if (bad_std_timing(t->hsize, t->vfreq_aspect))
return NULL;
/* According to the EDID spec, the hdisplay = hsize * 8 + 248 */
hsize = t->hsize * 8 + 248;
/* vrefresh_rate = vfreq + 60 */
vrefresh_rate = vfreq + 60;
/* the vdisplay is calculated based on the aspect ratio */
if (aspect_ratio == 0) {
if (revision < 3)
vsize = hsize;
else
vsize = (hsize * 10) / 16;
} else if (aspect_ratio == 1)
vsize = (hsize * 3) / 4;
else if (aspect_ratio == 2)
vsize = (hsize * 4) / 5;
else
vsize = (hsize * 9) / 16;
/* HDTV hack, part 1 */
if (vrefresh_rate == 60 &&
((hsize == 1360 && vsize == 765) ||
(hsize == 1368 && vsize == 769))) {
hsize = 1366;
vsize = 768;
}
/*
* If this connector already has a mode for this size and refresh
* rate (because it came from detailed or CVT info), use that
* instead. This way we don't have to guess at interlace or
* reduced blanking.
*/
list_for_each_entry(m, struct drm_display_mode, &connector->probed_modes, head)
if (m->hdisplay == hsize && m->vdisplay == vsize &&
drm_mode_vrefresh(m) == vrefresh_rate)
return NULL;
/* HDTV hack, part 2 */
if (hsize == 1366 && vsize == 768 && vrefresh_rate == 60) {
mode = drm_cvt_mode(dev, 1366, 768, vrefresh_rate, 0, 0,
false);
if (mode != NULL) {
mode->hdisplay = 1366;
mode->hsync_start = mode->hsync_start - 1;
mode->hsync_end = mode->hsync_end - 1;
}
return mode;
}
/* check whether it can be found in default mode table */
if (drm_monitor_supports_rb(edid)) {
mode = drm_mode_find_dmt(dev, hsize, vsize, vrefresh_rate,
true);
if (mode)
return mode;
}
mode = drm_mode_find_dmt(dev, hsize, vsize, vrefresh_rate, false);
if (mode)
return mode;
/* okay, generate it */
switch (timing_level) {
case LEVEL_DMT:
break;
case LEVEL_GTF:
mode = drm_gtf_mode(dev, hsize, vsize, vrefresh_rate, 0, 0);
break;
case LEVEL_GTF2:
/*
* This is potentially wrong if there's ever a monitor with
* more than one ranges section, each claiming a different
* secondary GTF curve. Please don't do that.
*/
mode = drm_gtf_mode(dev, hsize, vsize, vrefresh_rate, 0, 0);
if (!mode)
return NULL;
if (drm_mode_hsync(mode) > drm_gtf2_hbreak(edid)) {
drm_mode_destroy(dev, mode);
mode = drm_gtf_mode_complex(dev, hsize, vsize,
vrefresh_rate, 0, 0,
drm_gtf2_m(edid),
drm_gtf2_2c(edid),
drm_gtf2_k(edid),
drm_gtf2_2j(edid));
}
break;
case LEVEL_CVT:
mode = drm_cvt_mode(dev, hsize, vsize, vrefresh_rate, 0, 0,
false);
break;
}
return mode;
}
/*
* EDID is delightfully ambiguous about how interlaced modes are to be
* encoded. Our internal representation is of frame height, but some
* HDTV detailed timings are encoded as field height.
*
* The format list here is from CEA, in frame size. Technically we
* should be checking refresh rate too. Whatever.
*/
static void
drm_mode_do_interlace_quirk(struct drm_display_mode *mode,
struct detailed_pixel_timing *pt)
{
int i;
static const struct {
int w, h;
} cea_interlaced[] = {
{ 1920, 1080 },
{ 720, 480 },
{ 1440, 480 },
{ 2880, 480 },
{ 720, 576 },
{ 1440, 576 },
{ 2880, 576 },
};
if (!(pt->misc & DRM_EDID_PT_INTERLACED))
return;
for (i = 0; i < ARRAY_SIZE(cea_interlaced); i++) {
if ((mode->hdisplay == cea_interlaced[i].w) &&
(mode->vdisplay == cea_interlaced[i].h / 2)) {
mode->vdisplay *= 2;
mode->vsync_start *= 2;
mode->vsync_end *= 2;
mode->vtotal *= 2;
mode->vtotal |= 1;
}
}
mode->flags |= DRM_MODE_FLAG_INTERLACE;
}
/**
* drm_mode_detailed - create a new mode from an EDID detailed timing section
* @dev: DRM device (needed to create new mode)
* @edid: EDID block
* @timing: EDID detailed timing info
* @quirks: quirks to apply
*
* An EDID detailed timing block contains enough info for us to create and
* return a new struct drm_display_mode.
*/
static struct drm_display_mode *drm_mode_detailed(struct drm_device *dev,
struct edid *edid,
struct detailed_timing *timing,
u32 quirks)
{
struct drm_display_mode *mode;
struct detailed_pixel_timing *pt = &timing->data.pixel_data;
unsigned hactive = (pt->hactive_hblank_hi & 0xf0) << 4 | pt->hactive_lo;
unsigned vactive = (pt->vactive_vblank_hi & 0xf0) << 4 | pt->vactive_lo;
unsigned hblank = (pt->hactive_hblank_hi & 0xf) << 8 | pt->hblank_lo;
unsigned vblank = (pt->vactive_vblank_hi & 0xf) << 8 | pt->vblank_lo;
unsigned hsync_offset = (pt->hsync_vsync_offset_pulse_width_hi & 0xc0) << 2 | pt->hsync_offset_lo;
unsigned hsync_pulse_width = (pt->hsync_vsync_offset_pulse_width_hi & 0x30) << 4 | pt->hsync_pulse_width_lo;
unsigned vsync_offset = (pt->hsync_vsync_offset_pulse_width_hi & 0xc) >> 2 | pt->vsync_offset_pulse_width_lo >> 4;
unsigned vsync_pulse_width = (pt->hsync_vsync_offset_pulse_width_hi & 0x3) << 4 | (pt->vsync_offset_pulse_width_lo & 0xf);
/* ignore tiny modes */
if (hactive < 64 || vactive < 64)
return NULL;
if (pt->misc & DRM_EDID_PT_STEREO) {
DRM_ERROR("stereo mode not supported\n");
return NULL;
}
if (!(pt->misc & DRM_EDID_PT_SEPARATE_SYNC)) {
DRM_ERROR("integrated sync not supported\n");
}
/* it is incorrect if hsync/vsync width is zero */
if (!hsync_pulse_width || !vsync_pulse_width) {
DRM_DEBUG_KMS("Incorrect Detailed timing. "
"Wrong Hsync/Vsync pulse width\n");
return NULL;
}
if (quirks & EDID_QUIRK_FORCE_REDUCED_BLANKING) {
mode = drm_cvt_mode(dev, hactive, vactive, 60, true, false, false);
if (!mode)
return NULL;
goto set_size;
}
mode = drm_mode_create(dev);
if (!mode)
return NULL;
if (quirks & EDID_QUIRK_135_CLOCK_TOO_HIGH)
timing->pixel_clock = cpu_to_le16(1088);
mode->clock = le16_to_cpu(timing->pixel_clock) * 10;
mode->hdisplay = hactive;
mode->hsync_start = mode->hdisplay + hsync_offset;
mode->hsync_end = mode->hsync_start + hsync_pulse_width;
mode->htotal = mode->hdisplay + hblank;
mode->vdisplay = vactive;
mode->vsync_start = mode->vdisplay + vsync_offset;
mode->vsync_end = mode->vsync_start + vsync_pulse_width;
mode->vtotal = mode->vdisplay + vblank;
/* Some EDIDs have bogus h/vtotal values */
if (mode->hsync_end > mode->htotal)
mode->htotal = mode->hsync_end + 1;
if (mode->vsync_end > mode->vtotal)
mode->vtotal = mode->vsync_end + 1;
drm_mode_do_interlace_quirk(mode, pt);
if (quirks & EDID_QUIRK_DETAILED_SYNC_PP) {
pt->misc |= DRM_EDID_PT_HSYNC_POSITIVE | DRM_EDID_PT_VSYNC_POSITIVE;
}
mode->flags |= (pt->misc & DRM_EDID_PT_HSYNC_POSITIVE) ?
DRM_MODE_FLAG_PHSYNC : DRM_MODE_FLAG_NHSYNC;
mode->flags |= (pt->misc & DRM_EDID_PT_VSYNC_POSITIVE) ?
DRM_MODE_FLAG_PVSYNC : DRM_MODE_FLAG_NVSYNC;
set_size:
mode->width_mm = pt->width_mm_lo | (pt->width_height_mm_hi & 0xf0) << 4;
mode->height_mm = pt->height_mm_lo | (pt->width_height_mm_hi & 0xf) << 8;
if (quirks & EDID_QUIRK_DETAILED_IN_CM) {
mode->width_mm *= 10;
mode->height_mm *= 10;
}
if (quirks & EDID_QUIRK_DETAILED_USE_MAXIMUM_SIZE) {
mode->width_mm = edid->width_cm * 10;
mode->height_mm = edid->height_cm * 10;
}
mode->type = DRM_MODE_TYPE_DRIVER;
drm_mode_set_name(mode);
return mode;
}
static bool
mode_in_hsync_range(const struct drm_display_mode *mode,
struct edid *edid, u8 *t)
{
int hsync, hmin, hmax;
hmin = t[7];
if (edid->revision >= 4)
hmin += ((t[4] & 0x04) ? 255 : 0);
hmax = t[8];
if (edid->revision >= 4)
hmax += ((t[4] & 0x08) ? 255 : 0);
hsync = drm_mode_hsync(mode);
return (hsync <= hmax && hsync >= hmin);
}
static bool
mode_in_vsync_range(const struct drm_display_mode *mode,
struct edid *edid, u8 *t)
{
int vsync, vmin, vmax;
vmin = t[5];
if (edid->revision >= 4)
vmin += ((t[4] & 0x01) ? 255 : 0);
vmax = t[6];
if (edid->revision >= 4)
vmax += ((t[4] & 0x02) ? 255 : 0);
vsync = drm_mode_vrefresh(mode);
return (vsync <= vmax && vsync >= vmin);
}
static u32
range_pixel_clock(struct edid *edid, u8 *t)
{
/* unspecified */
if (t[9] == 0 || t[9] == 255)
return 0;
/* 1.4 with CVT support gives us real precision, yay */
if (edid->revision >= 4 && t[10] == 0x04)
return (t[9] * 10000) - ((t[12] >> 2) * 250);
/* 1.3 is pathetic, so fuzz up a bit */
return t[9] * 10000 + 5001;
}
static bool
mode_in_range(const struct drm_display_mode *mode, struct edid *edid,
struct detailed_timing *timing)
{
u32 max_clock;
u8 *t = (u8 *)timing;
if (!mode_in_hsync_range(mode, edid, t))
return false;
if (!mode_in_vsync_range(mode, edid, t))
return false;
if ((max_clock = range_pixel_clock(edid, t)))
if (mode->clock > max_clock)
return false;
/* 1.4 max horizontal check */
if (edid->revision >= 4 && t[10] == 0x04)
if (t[13] && mode->hdisplay > 8 * (t[13] + (256 * (t[12]&0x3))))
return false;
if (mode_is_rb(mode) && !drm_monitor_supports_rb(edid))
return false;
return true;
}
static bool valid_inferred_mode(const struct drm_connector *connector,
const struct drm_display_mode *mode)
{
struct drm_display_mode *m;
bool ok = false;
list_for_each_entry(m, struct drm_display_mode, &connector->probed_modes, head) {
if (mode->hdisplay == m->hdisplay &&
mode->vdisplay == m->vdisplay &&
drm_mode_vrefresh(mode) == drm_mode_vrefresh(m))
return false; /* duplicated */
if (mode->hdisplay <= m->hdisplay &&
mode->vdisplay <= m->vdisplay)
ok = true;
}
return ok;
}
static int
drm_dmt_modes_for_range(struct drm_connector *connector, struct edid *edid,
struct detailed_timing *timing)
{
int i, modes = 0;
struct drm_display_mode *newmode;
struct drm_device *dev = connector->dev;
for (i = 0; i < ARRAY_SIZE(drm_dmt_modes); i++) {
if (mode_in_range(drm_dmt_modes + i, edid, timing) &&
valid_inferred_mode(connector, drm_dmt_modes + i)) {
newmode = drm_mode_duplicate(dev, &drm_dmt_modes[i]);
if (newmode) {
drm_mode_probed_add(connector, newmode);
modes++;
}
}
}
return modes;
}
/* fix up 1366x768 mode from 1368x768;
* GFT/CVT can't express 1366 width which isn't dividable by 8
*/
static void fixup_mode_1366x768(struct drm_display_mode *mode)
{
if (mode->hdisplay == 1368 && mode->vdisplay == 768) {
mode->hdisplay = 1366;
mode->hsync_start--;
mode->hsync_end--;
drm_mode_set_name(mode);
}
}
static int
drm_gtf_modes_for_range(struct drm_connector *connector, struct edid *edid,
struct detailed_timing *timing)
{
int i, modes = 0;
struct drm_display_mode *newmode;
struct drm_device *dev = connector->dev;
for (i = 0; i < ARRAY_SIZE(extra_modes); i++) {
const struct minimode *m = &extra_modes[i];
newmode = drm_gtf_mode(dev, m->w, m->h, m->r, 0, 0);
if (!newmode)
return modes;
fixup_mode_1366x768(newmode);
if (!mode_in_range(newmode, edid, timing) ||
!valid_inferred_mode(connector, newmode)) {
drm_mode_destroy(dev, newmode);
continue;
}
drm_mode_probed_add(connector, newmode);
modes++;
}
return modes;
}
static int
drm_cvt_modes_for_range(struct drm_connector *connector, struct edid *edid,
struct detailed_timing *timing)
{
int i, modes = 0;
struct drm_display_mode *newmode;
struct drm_device *dev = connector->dev;
bool rb = drm_monitor_supports_rb(edid);
for (i = 0; i < ARRAY_SIZE(extra_modes); i++) {
const struct minimode *m = &extra_modes[i];
newmode = drm_cvt_mode(dev, m->w, m->h, m->r, rb, 0, 0);
if (!newmode)
return modes;
fixup_mode_1366x768(newmode);
if (!mode_in_range(newmode, edid, timing) ||
!valid_inferred_mode(connector, newmode)) {
drm_mode_destroy(dev, newmode);
continue;
}
drm_mode_probed_add(connector, newmode);
modes++;
}
return modes;
}
static void
do_inferred_modes(struct detailed_timing *timing, void *c)
{
struct detailed_mode_closure *closure = c;
struct detailed_non_pixel *data = &timing->data.other_data;
struct detailed_data_monitor_range *range = &data->data.range;
if (data->type != EDID_DETAIL_MONITOR_RANGE)
return;
closure->modes += drm_dmt_modes_for_range(closure->connector,
closure->edid,
timing);
if (!version_greater(closure->edid, 1, 1))
return; /* GTF not defined yet */
switch (range->flags) {
case 0x02: /* secondary gtf, XXX could do more */
case 0x00: /* default gtf */
closure->modes += drm_gtf_modes_for_range(closure->connector,
closure->edid,
timing);
break;
case 0x04: /* cvt, only in 1.4+ */
if (!version_greater(closure->edid, 1, 3))
break;
closure->modes += drm_cvt_modes_for_range(closure->connector,
closure->edid,
timing);
break;
case 0x01: /* just the ranges, no formula */
default:
break;
}
}
static int
add_inferred_modes(struct drm_connector *connector, struct edid *edid)
{
struct detailed_mode_closure closure = {
connector, edid, 0, 0, 0
};
if (version_greater(edid, 1, 0))
drm_for_each_detailed_block((u8 *)edid, do_inferred_modes,
&closure);
return closure.modes;
}
static int
drm_est3_modes(struct drm_connector *connector, struct detailed_timing *timing)
{
int i, j, m, modes = 0;
struct drm_display_mode *mode;
u8 *est = ((u8 *)timing) + 5;
for (i = 0; i < 6; i++) {
for (j = 7; j > 0; j--) {
m = (i * 8) + (7 - j);
if (m >= ARRAY_SIZE(est3_modes))
break;
if (est[i] & (1 << j)) {
mode = drm_mode_find_dmt(connector->dev,
est3_modes[m].w,
est3_modes[m].h,
est3_modes[m].r,
est3_modes[m].rb);
if (mode) {
drm_mode_probed_add(connector, mode);
modes++;
}
}
}
}
return modes;
}
static void
do_established_modes(struct detailed_timing *timing, void *c)
{
struct detailed_mode_closure *closure = c;
struct detailed_non_pixel *data = &timing->data.other_data;
if (data->type == EDID_DETAIL_EST_TIMINGS)
closure->modes += drm_est3_modes(closure->connector, timing);
}
/**
* add_established_modes - get est. modes from EDID and add them
* @edid: EDID block to scan
*
* Each EDID block contains a bitmap of the supported "established modes" list
* (defined above). Tease them out and add them to the global modes list.
*/
static int
add_established_modes(struct drm_connector *connector, struct edid *edid)
{
struct drm_device *dev = connector->dev;
unsigned long est_bits = edid->established_timings.t1 |
(edid->established_timings.t2 << 8) |
((edid->established_timings.mfg_rsvd & 0x80) << 9);
int i, modes = 0;
struct detailed_mode_closure closure = {
connector, edid, 0, 0, 0
};
for (i = 0; i <= EDID_EST_TIMINGS; i++) {
if (est_bits & (1<<i)) {
struct drm_display_mode *newmode;
newmode = drm_mode_duplicate(dev, &edid_est_modes[i]);
if (newmode) {
drm_mode_probed_add(connector, newmode);
modes++;
}
}
}
if (version_greater(edid, 1, 0))
drm_for_each_detailed_block((u8 *)edid,
do_established_modes, &closure);
return modes + closure.modes;
}
static void
do_standard_modes(struct detailed_timing *timing, void *c)
{
struct detailed_mode_closure *closure = c;
struct detailed_non_pixel *data = &timing->data.other_data;
struct drm_connector *connector = closure->connector;
struct edid *edid = closure->edid;
if (data->type == EDID_DETAIL_STD_MODES) {
int i;
for (i = 0; i < 6; i++) {
struct std_timing *std;
struct drm_display_mode *newmode;
std = &data->data.timings[i];
newmode = drm_mode_std(connector, edid, std,
edid->revision);
if (newmode) {
drm_mode_probed_add(connector, newmode);
closure->modes++;
}
}
}
}
/**
* add_standard_modes - get std. modes from EDID and add them
* @edid: EDID block to scan
*
* Standard modes can be calculated using the appropriate standard (DMT,
* GTF or CVT. Grab them from @edid and add them to the list.
*/
static int
add_standard_modes(struct drm_connector *connector, struct edid *edid)
{
int i, modes = 0;
struct detailed_mode_closure closure = {
connector, edid, 0, 0, 0
};
for (i = 0; i < EDID_STD_TIMINGS; i++) {
struct drm_display_mode *newmode;
newmode = drm_mode_std(connector, edid,
&edid->standard_timings[i],
edid->revision);
if (newmode) {
drm_mode_probed_add(connector, newmode);
modes++;
}
}
if (version_greater(edid, 1, 0))
drm_for_each_detailed_block((u8 *)edid, do_standard_modes,
&closure);
/* XXX should also look for standard codes in VTB blocks */
return modes + closure.modes;
}
static int drm_cvt_modes(struct drm_connector *connector,
struct detailed_timing *timing)
{
int i, j, modes = 0;
struct drm_display_mode *newmode;
struct drm_device *dev = connector->dev;
struct cvt_timing *cvt;
const int rates[] = { 60, 85, 75, 60, 50 };
const u8 empty[3] = { 0, 0, 0 };
for (i = 0; i < 4; i++) {
int width, height;
cvt = &(timing->data.other_data.data.cvt[i]);
if (!memcmp(cvt->code, empty, 3))
continue;
height = (cvt->code[0] + ((cvt->code[1] & 0xf0) << 4) + 1) * 2;
switch (cvt->code[1] & 0x0c) {
case 0x00:
width = height * 4 / 3;
break;
case 0x04:
width = height * 16 / 9;
break;
case 0x08:
width = height * 16 / 10;
break;
case 0x0c:
width = height * 15 / 9;
break;
}
for (j = 1; j < 5; j++) {
if (cvt->code[2] & (1 << j)) {
newmode = drm_cvt_mode(dev, width, height,
rates[j], j == 0,
false, false);
if (newmode) {
drm_mode_probed_add(connector, newmode);
modes++;
}
}
}
}
return modes;
}
static void
do_cvt_mode(struct detailed_timing *timing, void *c)
{
struct detailed_mode_closure *closure = c;
struct detailed_non_pixel *data = &timing->data.other_data;
if (data->type == EDID_DETAIL_CVT_3BYTE)
closure->modes += drm_cvt_modes(closure->connector, timing);
}
static int
add_cvt_modes(struct drm_connector *connector, struct edid *edid)
{
struct detailed_mode_closure closure = {
connector, edid, 0, 0, 0
};
if (version_greater(edid, 1, 2))
drm_for_each_detailed_block((u8 *)edid, do_cvt_mode, &closure);
/* XXX should also look for CVT codes in VTB blocks */
return closure.modes;
}
static void
do_detailed_mode(struct detailed_timing *timing, void *c)
{
struct detailed_mode_closure *closure = c;
struct drm_display_mode *newmode;
if (timing->pixel_clock) {
newmode = drm_mode_detailed(closure->connector->dev,
closure->edid, timing,
closure->quirks);
if (!newmode)
return;
if (closure->preferred)
newmode->type |= DRM_MODE_TYPE_PREFERRED;
drm_mode_probed_add(closure->connector, newmode);
closure->modes++;
closure->preferred = 0;
}
}
/*
* add_detailed_modes - Add modes from detailed timings
* @connector: attached connector
* @edid: EDID block to scan
* @quirks: quirks to apply
*/
static int
add_detailed_modes(struct drm_connector *connector, struct edid *edid,
u32 quirks)
{
struct detailed_mode_closure closure = {
connector,
edid,
1,
quirks,
0
};
if (closure.preferred && !version_greater(edid, 1, 3))
closure.preferred =
(edid->features & DRM_EDID_FEATURE_PREFERRED_TIMING);
drm_for_each_detailed_block((u8 *)edid, do_detailed_mode, &closure);
return closure.modes;
}
#define HDMI_IDENTIFIER 0x000C03
#define AUDIO_BLOCK 0x01
#define VIDEO_BLOCK 0x02
#define VENDOR_BLOCK 0x03
#define SPEAKER_BLOCK 0x04
#define VIDEO_CAPABILITY_BLOCK 0x07
#define EDID_BASIC_AUDIO (1 << 6)
#define EDID_CEA_YCRCB444 (1 << 5)
#define EDID_CEA_YCRCB422 (1 << 4)
#define EDID_CEA_VCDB_QS (1 << 6)
/**
* Search EDID for CEA extension block.
*/
u8 *drm_find_cea_extension(struct edid *edid)
{
u8 *edid_ext = NULL;
int i;
/* No EDID or EDID extensions */
if (edid == NULL || edid->extensions == 0)
return NULL;
/* Find CEA extension */
for (i = 0; i < edid->extensions; i++) {
edid_ext = (u8 *)edid + EDID_LENGTH * (i + 1);
if (edid_ext[0] == CEA_EXT)
break;
}
if (i == edid->extensions)
return NULL;
return edid_ext;
}
/*
* Calculate the alternate clock for the CEA mode
* (60Hz vs. 59.94Hz etc.)
*/
static unsigned int
cea_mode_alternate_clock(const struct drm_display_mode *cea_mode)
{
unsigned int clock = cea_mode->clock;
if (cea_mode->vrefresh % 6 != 0)
return clock;
/*
* edid_cea_modes contains the 59.94Hz
* variant for 240 and 480 line modes,
* and the 60Hz variant otherwise.
*/
if (cea_mode->vdisplay == 240 || cea_mode->vdisplay == 480)
clock = clock * 1001 / 1000;
else
clock = DIV_ROUND_UP(clock * 1000, 1001);
return clock;
}
/**
* drm_match_cea_mode - look for a CEA mode matching given mode
* @to_match: display mode
*
* Returns the CEA Video ID (VIC) of the mode or 0 if it isn't a CEA-861
* mode.
*/
u8 drm_match_cea_mode(const struct drm_display_mode *to_match)
{
u8 mode;
if (!to_match->clock)
return 0;
for (mode = 0; mode < ARRAY_SIZE(edid_cea_modes); mode++) {
const struct drm_display_mode *cea_mode = (struct drm_display_mode *)&edid_cea_modes[mode];
unsigned int clock1, clock2;
/* Check both 60Hz and 59.94Hz */
clock1 = cea_mode->clock;
clock2 = cea_mode_alternate_clock(cea_mode);
if ((KHZ2PICOS(to_match->clock) == KHZ2PICOS(clock1) ||
KHZ2PICOS(to_match->clock) == KHZ2PICOS(clock2)) &&
drm_mode_equal_no_clocks(to_match, cea_mode))
return mode + 1;
}
return 0;
}
static int
add_alternate_cea_modes(struct drm_connector *connector, struct edid *edid)
{
struct drm_device *dev = connector->dev;
struct drm_display_mode *mode, *tmp;
struct list_head list;
INIT_LIST_HEAD(&list);
int modes = 0;
/* Don't add CEA modes if the CEA extension block is missing */
if (!drm_find_cea_extension(edid))
return 0;
/*
* Go through all probed modes and create a new mode
* with the alternate clock for certain CEA modes.
*/
list_for_each_entry(mode, struct drm_display_mode, &connector->probed_modes, head) {
const struct drm_display_mode *cea_mode;
struct drm_display_mode *newmode;
u8 cea_mode_idx = drm_match_cea_mode(mode) - 1;
unsigned int clock1, clock2;
if (cea_mode_idx >= ARRAY_SIZE(edid_cea_modes))
continue;
cea_mode = &edid_cea_modes[cea_mode_idx];
clock1 = cea_mode->clock;
clock2 = cea_mode_alternate_clock(cea_mode);
if (clock1 == clock2)
continue;
if (mode->clock != clock1 && mode->clock != clock2)
continue;
newmode = drm_mode_duplicate(dev, cea_mode);
if (!newmode)
continue;
/*
* The current mode could be either variant. Make
* sure to pick the "other" clock for the new mode.
*/
if (mode->clock != clock1)
newmode->clock = clock1;
else
newmode->clock = clock2;
list_add_tail(&newmode->head, &list, (caddr_t)newmode);
}
list_for_each_entry_safe(mode, tmp, struct drm_display_mode, &list, head) {
list_del(&mode->head);
drm_mode_probed_add(connector, mode);
modes++;
}
return modes;
}
static int
do_cea_modes (struct drm_connector *connector, u8 *db, u8 len)
{
struct drm_device *dev = connector->dev;
u8 * mode, cea_mode;
int modes = 0;
for (mode = db; mode < db + len; mode++) {
cea_mode = (*mode & 127) - 1; /* CEA modes are numbered 1..127 */
if (cea_mode < ARRAY_SIZE(edid_cea_modes)) {
struct drm_display_mode *newmode;
newmode = drm_mode_duplicate(dev,
&edid_cea_modes[cea_mode]);
if (newmode) {
newmode->vrefresh = 0;
drm_mode_probed_add(connector, newmode);
modes++;
}
}
}
return modes;
}
static int
cea_db_payload_len(const u8 *db)
{
return db[0] & 0x1f;
}
static int
cea_db_tag(const u8 *db)
{
return db[0] >> 5;
}
static int
cea_revision(const u8 *cea)
{
return cea[1];
}
static int
cea_db_offsets(const u8 *cea, int *start, int *end)
{
/* Data block offset in CEA extension block */
*start = 4;
*end = cea[2];
if (*end == 0)
*end = 127;
if (*end < 4 || *end > 127)
return -ERANGE;
return 0;
}
#define for_each_cea_db(cea, i, start, end) \
for ((i) = (start); (i) < (end) && (i) + cea_db_payload_len(&(cea)[(i)]) < (end); (i) += cea_db_payload_len(&(cea)[(i)]) + 1)
static int
add_cea_modes(struct drm_connector *connector, struct edid *edid)
{
u8 * cea = drm_find_cea_extension(edid);
u8 * db, dbl;
int modes = 0;
if (cea && cea_revision(cea) >= 3) {
int i, start, end;
if (cea_db_offsets(cea, &start, &end))
return 0;
for_each_cea_db(cea, i, start, end) {
db = &cea[i];
dbl = cea_db_payload_len(db);
if (cea_db_tag(db) == VIDEO_BLOCK)
modes += do_cea_modes (connector, db+1, dbl);
}
}
return modes;
}
static void
parse_hdmi_vsdb(struct drm_connector *connector, const u8 *db)
{
u8 len = cea_db_payload_len(db);
if (len >= 6) {
connector->eld[5] |= (db[6] >> 7) << 1; /* Supports_AI */
connector->dvi_dual = db[6] & 1;
}
if (len >= 7)
connector->max_tmds_clock = db[7] * 5;
if (len >= 8) {
connector->latency_present[0] = db[8] >> 7;
connector->latency_present[1] = (db[8] >> 6) & 1;
}
if (len >= 9)
connector->video_latency[0] = db[9];
if (len >= 10)
connector->audio_latency[0] = db[10];
if (len >= 11)
connector->video_latency[1] = db[11];
if (len >= 12)
connector->audio_latency[1] = db[12];
DRM_LOG_KMS("HDMI: DVI dual %d, "
"max TMDS clock %d, "
"latency present %d %d, "
"video latency %d %d, "
"audio latency %d %d\n",
connector->dvi_dual,
connector->max_tmds_clock,
(int) connector->latency_present[0],
(int) connector->latency_present[1],
connector->video_latency[0],
connector->video_latency[1],
connector->audio_latency[0],
connector->audio_latency[1]);
}
static void
monitor_name(struct detailed_timing *t, void *data)
{
if (t->data.other_data.type == EDID_DETAIL_MONITOR_NAME)
*(u8 **)data = t->data.other_data.data.str.str;
}
static bool cea_db_is_hdmi_vsdb(const u8 *db)
{
int hdmi_id;
if (cea_db_tag(db) != VENDOR_BLOCK)
return false;
if (cea_db_payload_len(db) < 5)
return false;
hdmi_id = db[1] | (db[2] << 8) | (db[3] << 16);
return hdmi_id == HDMI_IDENTIFIER;
}
/**
* drm_edid_to_eld - build ELD from EDID
* @connector: connector corresponding to the HDMI/DP sink
* @edid: EDID to parse
*
* Fill the ELD (EDID-Like Data) buffer for passing to the audio driver.
* Some ELD fields are left to the graphics driver caller:
* - Conn_Type
* - HDCP
* - Port_ID
*/
void drm_edid_to_eld(struct drm_connector *connector, struct edid *edid)
{
uint8_t *eld = connector->eld;
u8 *cea;
u8 *name;
u8 *db;
int sad_count = 0;
int mnl;
int dbl;
(void) memset(eld, 0, sizeof(connector->eld));
cea = drm_find_cea_extension(edid);
if (!cea) {
DRM_DEBUG_KMS("ELD: no CEA Extension found\n");
return;
}
name = NULL;
drm_for_each_detailed_block((u8 *)edid, monitor_name, &name);
for (mnl = 0; name && mnl < 13; mnl++) {
if (name[mnl] == 0x0a)
break;
eld[20 + mnl] = name[mnl];
}
eld[4] = (cea[1] << 5) | mnl;
DRM_DEBUG_KMS("ELD monitor %s\n", eld + 20);
eld[0] = 2 << 3; /* ELD version: 2 */
eld[16] = edid->mfg_id[0];
eld[17] = edid->mfg_id[1];
eld[18] = edid->prod_code[0];
eld[19] = edid->prod_code[1];
if (cea_revision(cea) >= 3) {
int i, start, end;
if (cea_db_offsets(cea, &start, &end)) {
start = 0;
end = 0;
}
for_each_cea_db(cea, i, start, end) {
db = &cea[i];
dbl = cea_db_payload_len(db);
switch (cea_db_tag(db)) {
case AUDIO_BLOCK:
/* Audio Data Block, contains SADs */
sad_count = dbl / 3;
if (dbl >= 1)
(void) memcpy(eld + 20 + mnl, &db[1], dbl);
break;
case SPEAKER_BLOCK:
/* Speaker Allocation Data Block */
if (dbl >= 1)
eld[7] = db[1];
break;
case VENDOR_BLOCK:
/* HDMI Vendor-Specific Data Block */
if (cea_db_is_hdmi_vsdb(db))
parse_hdmi_vsdb(connector, db);
break;
default:
break;
}
}
}
eld[5] |= sad_count << 4;
eld[2] = (20 + mnl + sad_count * 3 + 3) / 4;
DRM_DEBUG_KMS("ELD size %d, SAD count %d\n", (int)eld[2], sad_count);
}
/**
* drm_edid_to_sad - extracts SADs from EDID
* @edid: EDID to parse
* @sads: pointer that will be set to the extracted SADs
*
* Looks for CEA EDID block and extracts SADs (Short Audio Descriptors) from it.
* Note: returned pointer needs to be kfreed
*
* Return number of found SADs or negative number on error.
*/
int drm_edid_to_sad(struct edid *edid, struct cea_sad **sads)
{
int count = 0;
int i, start, end, dbl;
u8 *cea;
cea = drm_find_cea_extension(edid);
if (!cea) {
DRM_DEBUG_KMS("SAD: no CEA Extension found\n");
return -ENOENT;
}
if (cea_revision(cea) < 3) {
DRM_DEBUG_KMS("SAD: wrong CEA revision\n");
return -ENOTSUP;
}
if (cea_db_offsets(cea, &start, &end)) {
DRM_DEBUG_KMS("SAD: invalid data block offsets\n");
return -EPROTO;
}
for_each_cea_db(cea, i, start, end) {
u8 *db = &cea[i];
if (cea_db_tag(db) == AUDIO_BLOCK) {
int j;
dbl = cea_db_payload_len(db);
count = dbl / 3; /* SAD is 3B */
*sads = kcalloc(count, sizeof(**sads), GFP_KERNEL);
if (!*sads)
return -ENOMEM;
for (j = 0; j < count; j++) {
u8 *sad = &db[1 + j * 3];
(*sads)[j].format = (sad[0] & 0x78) >> 3;
(*sads)[j].channels = sad[0] & 0x7;
(*sads)[j].freq = sad[1] & 0x7F;
(*sads)[j].byte2 = sad[2];
}
break;
}
}
return count;
}
/**
* drm_av_sync_delay - HDMI/DP sink audio-video sync delay in millisecond
* @connector: connector associated with the HDMI/DP sink
* @mode: the display mode
*/
int drm_av_sync_delay(struct drm_connector *connector,
struct drm_display_mode *mode)
{
int i = !!(mode->flags & DRM_MODE_FLAG_INTERLACE);
int a, v;
if (!connector->latency_present[0])
return 0;
if (!connector->latency_present[1])
i = 0;
a = connector->audio_latency[i];
v = connector->video_latency[i];
/*
* HDMI/DP sink doesn't support audio or video?
*/
if (a == 255 || v == 255)
return 0;
/*
* Convert raw EDID values to millisecond.
* Treat unknown latency as 0ms.
*/
if (a)
a = min(2 * (a - 1), 500);
if (v)
v = min(2 * (v - 1), 500);
return max(v - a, 0);
}
/**
* drm_select_eld - select one ELD from multiple HDMI/DP sinks
* @encoder: the encoder just changed display mode
* @mode: the adjusted display mode
*
* It's possible for one encoder to be associated with multiple HDMI/DP sinks.
* The policy is now hard coded to simply use the first HDMI/DP sink's ELD.
*/
struct drm_connector *drm_select_eld(struct drm_encoder *encoder,
/* LINTED E_FUNC_ARG_UNUSED */
struct drm_display_mode *mode)
{
struct drm_connector *connector;
struct drm_device *dev = encoder->dev;
list_for_each_entry(connector, struct drm_connector, &dev->mode_config.connector_list, head)
if (connector->encoder == encoder && connector->eld[0])
return connector;
return NULL;
}
/**
* drm_detect_hdmi_monitor - detect whether monitor is hdmi.
* @edid: monitor EDID information
*
* Parse the CEA extension according to CEA-861-B.
* Return true if HDMI, false if not or unknown.
*/
bool drm_detect_hdmi_monitor(struct edid *edid)
{
u8 *edid_ext;
int i;
int start_offset, end_offset;
edid_ext = drm_find_cea_extension(edid);
if (!edid_ext)
return false;
if (cea_db_offsets(edid_ext, &start_offset, &end_offset))
return false;
/*
* Because HDMI identifier is in Vendor Specific Block,
* search it from all data blocks of CEA extension.
*/
for_each_cea_db(edid_ext, i, start_offset, end_offset) {
if (cea_db_is_hdmi_vsdb(&edid_ext[i]))
return true;
}
return false;
}
/**
* drm_detect_monitor_audio - check monitor audio capability
*
* Monitor should have CEA extension block.
* If monitor has 'basic audio', but no CEA audio blocks, it's 'basic
* audio' only. If there is any audio extension block and supported
* audio format, assume at least 'basic audio' support, even if 'basic
* audio' is not defined in EDID.
*
*/
bool drm_detect_monitor_audio(struct edid *edid)
{
u8 *edid_ext;
int i, j;
bool has_audio = false;
int start_offset, end_offset;
edid_ext = drm_find_cea_extension(edid);
if (!edid_ext)
goto end;
has_audio = ((edid_ext[3] & EDID_BASIC_AUDIO) != 0);
if (has_audio) {
DRM_DEBUG_KMS("Monitor has basic audio support\n");
goto end;
}
if (cea_db_offsets(edid_ext, &start_offset, &end_offset))
goto end;
for_each_cea_db(edid_ext, i, start_offset, end_offset) {
if (cea_db_tag(&edid_ext[i]) == AUDIO_BLOCK) {
has_audio = true;
for (j = 1; j < cea_db_payload_len(&edid_ext[i]) + 1; j += 3)
DRM_DEBUG_KMS("CEA audio format %d\n",
(edid_ext[i + j] >> 3) & 0xf);
goto end;
}
}
end:
return has_audio;
}
/**
* drm_rgb_quant_range_selectable - is RGB quantization range selectable?
*
* Check whether the monitor reports the RGB quantization range selection
* as supported. The AVI infoframe can then be used to inform the monitor
* which quantization range (full or limited) is used.
*/
bool drm_rgb_quant_range_selectable(struct edid *edid)
{
u8 *edid_ext;
int i, start, end;
edid_ext = drm_find_cea_extension(edid);
if (!edid_ext)
return false;
if (cea_db_offsets(edid_ext, &start, &end))
return false;
for_each_cea_db(edid_ext, i, start, end) {
if (cea_db_tag(&edid_ext[i]) == VIDEO_CAPABILITY_BLOCK &&
cea_db_payload_len(&edid_ext[i]) == 2) {
DRM_DEBUG_KMS("CEA VCDB 0x%02x\n", edid_ext[i + 2]);
return edid_ext[i + 2] & EDID_CEA_VCDB_QS;
}
}
return false;
}
/**
* drm_add_display_info - pull display info out if present
* @edid: EDID data
* @info: display info (attached to connector)
*
* Grab any available display info and stuff it into the drm_display_info
* structure that's part of the connector. Useful for tracking bpp and
* color spaces.
*/
static void drm_add_display_info(struct edid *edid,
struct drm_display_info *info)
{
u8 *edid_ext;
info->width_mm = edid->width_cm * 10;
info->height_mm = edid->height_cm * 10;
/* driver figures it out in this case */
info->bpc = 0;
info->color_formats = 0;
if (edid->revision < 3)
return;
if (!(edid->input & DRM_EDID_INPUT_DIGITAL))
return;
/* Get data from CEA blocks if present */
edid_ext = drm_find_cea_extension(edid);
if (edid_ext) {
info->cea_rev = edid_ext[1];
/* The existence of a CEA block should imply RGB support */
info->color_formats = DRM_COLOR_FORMAT_RGB444;
if (edid_ext[3] & EDID_CEA_YCRCB444)
info->color_formats |= DRM_COLOR_FORMAT_YCRCB444;
if (edid_ext[3] & EDID_CEA_YCRCB422)
info->color_formats |= DRM_COLOR_FORMAT_YCRCB422;
}
/* Only defined for 1.4 with digital displays */
if (edid->revision < 4)
return;
switch (edid->input & DRM_EDID_DIGITAL_DEPTH_MASK) {
case DRM_EDID_DIGITAL_DEPTH_6:
info->bpc = 6;
break;
case DRM_EDID_DIGITAL_DEPTH_8:
info->bpc = 8;
break;
case DRM_EDID_DIGITAL_DEPTH_10:
info->bpc = 10;
break;
case DRM_EDID_DIGITAL_DEPTH_12:
info->bpc = 12;
break;
case DRM_EDID_DIGITAL_DEPTH_14:
info->bpc = 14;
break;
case DRM_EDID_DIGITAL_DEPTH_16:
info->bpc = 16;
break;
case DRM_EDID_DIGITAL_DEPTH_UNDEF:
default:
info->bpc = 0;
break;
}
info->color_formats |= DRM_COLOR_FORMAT_RGB444;
if (edid->features & DRM_EDID_FEATURE_RGB_YCRCB444)
info->color_formats |= DRM_COLOR_FORMAT_YCRCB444;
if (edid->features & DRM_EDID_FEATURE_RGB_YCRCB422)
info->color_formats |= DRM_COLOR_FORMAT_YCRCB422;
}
/**
* drm_add_edid_modes - add modes from EDID data, if available
* @connector: connector we're probing
* @edid: edid data
*
* Add the specified modes to the connector's mode list.
*
* Return number of modes added or 0 if we couldn't find any.
*/
int drm_add_edid_modes(struct drm_connector *connector, struct edid *edid)
{
int num_modes = 0;
u32 quirks;
if (edid == NULL) {
return 0;
}
if (!drm_edid_is_valid(edid)) {
DRM_ERROR("%s: EDID invalid.\n",
drm_get_connector_name(connector));
return 0;
}
quirks = edid_get_quirks(edid);
/*
* EDID spec says modes should be preferred in this order:
* - preferred detailed mode
* - other detailed modes from base block
* - detailed modes from extension blocks
* - CVT 3-byte code modes
* - standard timing codes
* - established timing codes
* - modes inferred from GTF or CVT range information
*
* We get this pretty much right.
*
* XXX order for additional mode types in extension blocks?
*/
num_modes += add_detailed_modes(connector, edid, quirks);
num_modes += add_cvt_modes(connector, edid);
num_modes += add_standard_modes(connector, edid);
num_modes += add_established_modes(connector, edid);
if (edid->features & DRM_EDID_FEATURE_DEFAULT_GTF)
num_modes += add_inferred_modes(connector, edid);
num_modes += add_cea_modes(connector, edid);
num_modes += add_alternate_cea_modes(connector, edid);
if (quirks & (EDID_QUIRK_PREFER_LARGE_60 | EDID_QUIRK_PREFER_LARGE_75))
edid_fixup_preferred(connector, quirks);
drm_add_display_info(edid, &connector->display_info);
return num_modes;
}
/**
* drm_add_modes_noedid - add modes for the connectors without EDID
* @connector: connector we're probing
* @hdisplay: the horizontal display limit
* @vdisplay: the vertical display limit
*
* Add the specified modes to the connector's mode list. Only when the
* hdisplay/vdisplay is not beyond the given limit, it will be added.
*
* Return number of modes added or 0 if we couldn't find any.
*/
int drm_add_modes_noedid(struct drm_connector *connector,
int hdisplay, int vdisplay)
{
int i, count, num_modes = 0;
struct drm_display_mode *mode;
struct drm_device *dev = connector->dev;
count = sizeof(drm_dmt_modes) / sizeof(struct drm_display_mode);
if (hdisplay < 0)
hdisplay = 0;
if (vdisplay < 0)
vdisplay = 0;
for (i = 0; i < count; i++) {
const struct drm_display_mode *ptr = &drm_dmt_modes[i];
if (hdisplay && vdisplay) {
/*
* Only when two are valid, they will be used to check
* whether the mode should be added to the mode list of
* the connector.
*/
if (ptr->hdisplay > hdisplay ||
ptr->vdisplay > vdisplay)
continue;
}
if (drm_mode_vrefresh(ptr) > 61)
continue;
mode = drm_mode_duplicate(dev, ptr);
if (mode) {
drm_mode_probed_add(connector, mode);
num_modes++;
}
}
return num_modes;
}