WebSVN – Kolibri OS – Blame – /drivers/video/drm/drm_edid.c

Rev	Author	Line No.	Line
1123	serge	1	/*
		2	* Copyright (c) 2006 Luc Verhaegen (quirks list)
		3	* Copyright (c) 2007-2008 Intel Corporation
		4	* Jesse Barnes
		5	*
		6	* DDC probing routines (drm_ddc_read & drm_do_probe_ddc_edid) originally from
		7	* FB layer.
		8	* Copyright (C) 2006 Dennis Munsie
		9	*
		10	* Permission is hereby granted, free of charge, to any person obtaining a
		11	* copy of this software and associated documentation files (the "Software"),
		12	* to deal in the Software without restriction, including without limitation
		13	* the rights to use, copy, modify, merge, publish, distribute, sub license,
		14	* and/or sell copies of the Software, and to permit persons to whom the
		15	* Software is furnished to do so, subject to the following conditions:
		16	*
		17	* The above copyright notice and this permission notice (including the
		18	* next paragraph) shall be included in all copies or substantial portions
		19	* of the Software.
		20	*
		21	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
		22	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
		23	* FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
		24	* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
		25	* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
		26	* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
		27	* DEALINGS IN THE SOFTWARE.
		28	*/
1221	serge	29	#include
1125	serge	30	#include
		31	#include
1123	serge	32	#include "drmP.h"
		33	#include "drm_edid.h"
		34
		35	/*
		36	* TODO:
		37	* - support EDID 1.4 (incl. CE blocks)
		38	*/
		39
		40	/*
		41	* EDID blocks out in the wild have a variety of bugs, try to collect
		42	* them here (note that userspace may work around broken monitors first,
		43	* but fixes should make their way here so that the kernel "just works"
		44	* on as many displays as possible).
		45	*/
		46
		47	/* First detailed mode wrong, use largest 60Hz mode */
		48	#define EDID_QUIRK_PREFER_LARGE_60 (1 << 0)
		49	/* Reported 135MHz pixel clock is too high, needs adjustment */
		50	#define EDID_QUIRK_135_CLOCK_TOO_HIGH (1 << 1)
		51	/* Prefer the largest mode at 75 Hz */
		52	#define EDID_QUIRK_PREFER_LARGE_75 (1 << 2)
		53	/* Detail timing is in cm not mm */
		54	#define EDID_QUIRK_DETAILED_IN_CM (1 << 3)
		55	/* Detailed timing descriptors have bogus size values, so just take the
		56	* maximum size and use that.
		57	*/
		58	#define EDID_QUIRK_DETAILED_USE_MAXIMUM_SIZE (1 << 4)
		59	/* Monitor forgot to set the first detailed is preferred bit. */
		60	#define EDID_QUIRK_FIRST_DETAILED_PREFERRED (1 << 5)
		61	/* use +hsync +vsync for detailed mode */
		62	#define EDID_QUIRK_DETAILED_SYNC_PP (1 << 6)
1179	serge	63	/* define the number of Extension EDID block */
		64	#define MAX_EDID_EXT_NUM 4
1123	serge	65
1179	serge	66	#define LEVEL_DMT 0
		67	#define LEVEL_GTF 1
		68	#define LEVEL_CVT 2
		69
1123	serge	70	static struct edid_quirk {
		71	char *vendor;
		72	int product_id;
		73	u32 quirks;
		74	} edid_quirk_list[] = {
		75	/* Acer AL1706 */
		76	{ "ACR", 44358, EDID_QUIRK_PREFER_LARGE_60 },
		77	/* Acer F51 */
		78	{ "API", 0x7602, EDID_QUIRK_PREFER_LARGE_60 },
		79	/* Unknown Acer */
		80	{ "ACR", 2423, EDID_QUIRK_FIRST_DETAILED_PREFERRED },
		81
		82	/* Belinea 10 15 55 */
		83	{ "MAX", 1516, EDID_QUIRK_PREFER_LARGE_60 },
		84	{ "MAX", 0x77e, EDID_QUIRK_PREFER_LARGE_60 },
		85
		86	/* Envision Peripherals, Inc. EN-7100e */
		87	{ "EPI", 59264, EDID_QUIRK_135_CLOCK_TOO_HIGH },
		88
		89	/* Funai Electronics PM36B */
		90	{ "FCM", 13600, EDID_QUIRK_PREFER_LARGE_75 \|
		91	EDID_QUIRK_DETAILED_IN_CM },
		92
		93	/* LG Philips LCD LP154W01-A5 */
		94	{ "LPL", 0, EDID_QUIRK_DETAILED_USE_MAXIMUM_SIZE },
		95	{ "LPL", 0x2a00, EDID_QUIRK_DETAILED_USE_MAXIMUM_SIZE },
		96
		97	/* Philips 107p5 CRT */
		98	{ "PHL", 57364, EDID_QUIRK_FIRST_DETAILED_PREFERRED },
		99
		100	/* Proview AY765C */
		101	{ "PTS", 765, EDID_QUIRK_FIRST_DETAILED_PREFERRED },
		102
		103	/* Samsung SyncMaster 205BW. Note: irony */
		104	{ "SAM", 541, EDID_QUIRK_DETAILED_SYNC_PP },
		105	/* Samsung SyncMaster 22[5-6]BW */
		106	{ "SAM", 596, EDID_QUIRK_PREFER_LARGE_60 },
		107	{ "SAM", 638, EDID_QUIRK_PREFER_LARGE_60 },
		108	};
		109
		110
		111	/* Valid EDID header has these bytes */
1221	serge	112	static const u8 edid_header[] = {
		113	0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00
		114	};
1123	serge	115
		116	/**
		117	* edid_is_valid - sanity check EDID data
		118	* @edid: EDID data
		119	*
		120	* Sanity check the EDID block by looking at the header, the version number
		121	* and the checksum. Return 0 if the EDID doesn't check out, or 1 if it's
		122	* valid.
		123	*/
		124	static bool edid_is_valid(struct edid *edid)
		125	{
		126	int i;
		127	u8 csum = 0;
		128	u8 raw_edid = (u8 )edid;
		129
		130	if (memcmp(edid->header, edid_header, sizeof(edid_header)))
		131	goto bad;
		132	if (edid->version != 1) {
		133	DRM_ERROR("EDID has major version %d, instead of 1\n", edid->version);
		134	goto bad;
		135	}
		136	if (edid->revision > 4)
		137	DRM_DEBUG("EDID minor > 4, assuming backward compatibility\n");
		138
		139	for (i = 0; i < EDID_LENGTH; i++)
		140	csum += raw_edid[i];
		141	if (csum) {
		142	DRM_ERROR("EDID checksum is invalid, remainder is %d\n", csum);
		143	goto bad;
		144	}
		145
		146	return 1;
		147
		148	bad:
		149	if (raw_edid) {
		150	DRM_ERROR("Raw EDID:\n");
		151	// print_hex_dump_bytes(KERN_ERR, DUMP_PREFIX_NONE, raw_edid, EDID_LENGTH);
		152	// printk("\n");
		153	}
		154	return 0;
		155	}
		156
		157	/**
		158	* edid_vendor - match a string against EDID's obfuscated vendor field
		159	* @edid: EDID to match
		160	* @vendor: vendor string
		161	*
		162	* Returns true if @vendor is in @edid, false otherwise
		163	*/
		164	static bool edid_vendor(struct edid edid, char vendor)
		165	{
		166	char edid_vendor[3];
		167
		168	edid_vendor[0] = ((edid->mfg_id[0] & 0x7c) >> 2) + '@';
		169	edid_vendor[1] = (((edid->mfg_id[0] & 0x3) << 3) \|
		170	((edid->mfg_id[1] & 0xe0) >> 5)) + '@';
		171	edid_vendor[2] = (edid->mfg_id[1] & 0x1f) + '@';
		172
		173	return !strncmp(edid_vendor, vendor, 3);
		174	}
		175
		176	/**
		177	* edid_get_quirks - return quirk flags for a given EDID
		178	* @edid: EDID to process
		179	*
		180	* This tells subsequent routines what fixes they need to apply.
		181	*/
		182	static u32 edid_get_quirks(struct edid *edid)
		183	{
		184	struct edid_quirk *quirk;
		185	int i;
		186
		187	for (i = 0; i < ARRAY_SIZE(edid_quirk_list); i++) {
		188	quirk = &edid_quirk_list[i];
		189
		190	if (edid_vendor(edid, quirk->vendor) &&
		191	(EDID_PRODUCT_ID(edid) == quirk->product_id))
		192	return quirk->quirks;
		193	}
		194
		195	return 0;
		196	}
		197
		198	#define MODE_SIZE(m) ((m)->hdisplay * (m)->vdisplay)
		199	#define MODE_REFRESH_DIFF(m,r) (abs((m)->vrefresh - target_refresh))
		200
		201
		202	/**
		203	* edid_fixup_preferred - set preferred modes based on quirk list
		204	* @connector: has mode list to fix up
		205	* @quirks: quirks list
		206	*
		207	* Walk the mode list for @connector, clearing the preferred status
		208	* on existing modes and setting it anew for the right mode ala @quirks.
		209	*/
		210	static void edid_fixup_preferred(struct drm_connector *connector,
		211	u32 quirks)
		212	{
		213	struct drm_display_mode t, cur_mode, *preferred_mode;
		214	int target_refresh = 0;
		215
		216	if (list_empty(&connector->probed_modes))
		217	return;
		218
		219	if (quirks & EDID_QUIRK_PREFER_LARGE_60)
		220	target_refresh = 60;
		221	if (quirks & EDID_QUIRK_PREFER_LARGE_75)
		222	target_refresh = 75;
		223
		224	preferred_mode = list_first_entry(&connector->probed_modes,
		225	struct drm_display_mode, head);
		226
		227	list_for_each_entry_safe(cur_mode, t, &connector->probed_modes, head) {
		228	cur_mode->type &= ~DRM_MODE_TYPE_PREFERRED;
		229
		230	if (cur_mode == preferred_mode)
		231	continue;
		232
		233	/* Largest mode is preferred */
		234	if (MODE_SIZE(cur_mode) > MODE_SIZE(preferred_mode))
		235	preferred_mode = cur_mode;
		236
		237	/* At a given size, try to get closest to target refresh */
		238	if ((MODE_SIZE(cur_mode) == MODE_SIZE(preferred_mode)) &&
		239	MODE_REFRESH_DIFF(cur_mode, target_refresh) <
		240	MODE_REFRESH_DIFF(preferred_mode, target_refresh)) {
		241	preferred_mode = cur_mode;
		242	}
		243	}
		244
		245	preferred_mode->type \|= DRM_MODE_TYPE_PREFERRED;
		246	}
		247
1179	serge	248	/*
		249	* Add the Autogenerated from the DMT spec.
		250	* This table is copied from xfree86/modes/xf86EdidModes.c.
		251	* But the mode with Reduced blank feature is deleted.
		252	*/
		253	static struct drm_display_mode drm_dmt_modes[] = {
		254	/* 640x350@85Hz */
		255	{ DRM_MODE("640x350", DRM_MODE_TYPE_DRIVER, 31500, 640, 672,
		256	736, 832, 0, 350, 382, 385, 445, 0,
		257	DRM_MODE_FLAG_PHSYNC \| DRM_MODE_FLAG_NVSYNC) },
		258	/* 640x400@85Hz */
		259	{ DRM_MODE("640x400", DRM_MODE_TYPE_DRIVER, 31500, 640, 672,
		260	736, 832, 0, 400, 401, 404, 445, 0,
		261	DRM_MODE_FLAG_NHSYNC \| DRM_MODE_FLAG_PVSYNC) },
		262	/* 720x400@85Hz */
		263	{ DRM_MODE("720x400", DRM_MODE_TYPE_DRIVER, 35500, 720, 756,
		264	828, 936, 0, 400, 401, 404, 446, 0,
		265	DRM_MODE_FLAG_NHSYNC \| DRM_MODE_FLAG_PVSYNC) },
		266	/* 640x480@60Hz */
		267	{ DRM_MODE("640x480", DRM_MODE_TYPE_DRIVER, 25175, 640, 656,
		268	752, 800, 0, 480, 489, 492, 525, 0,
		269	DRM_MODE_FLAG_NHSYNC \| DRM_MODE_FLAG_NVSYNC) },
		270	/* 640x480@72Hz */
		271	{ DRM_MODE("640x480", DRM_MODE_TYPE_DRIVER, 31500, 640, 664,
		272	704, 832, 0, 480, 489, 492, 520, 0,
		273	DRM_MODE_FLAG_NHSYNC \| DRM_MODE_FLAG_NVSYNC) },
		274	/* 640x480@75Hz */
		275	{ DRM_MODE("640x480", DRM_MODE_TYPE_DRIVER, 31500, 640, 656,
		276	720, 840, 0, 480, 481, 484, 500, 0,
		277	DRM_MODE_FLAG_NHSYNC \| DRM_MODE_FLAG_NVSYNC) },
		278	/* 640x480@85Hz */
		279	{ DRM_MODE("640x480", DRM_MODE_TYPE_DRIVER, 36000, 640, 696,
		280	752, 832, 0, 480, 481, 484, 509, 0,
		281	DRM_MODE_FLAG_NHSYNC \| DRM_MODE_FLAG_NVSYNC) },
		282	/* 800x600@56Hz */
		283	{ DRM_MODE("800x600", DRM_MODE_TYPE_DRIVER, 36000, 800, 824,
		284	896, 1024, 0, 600, 601, 603, 625, 0,
		285	DRM_MODE_FLAG_PHSYNC \| DRM_MODE_FLAG_PVSYNC) },
		286	/* 800x600@60Hz */
		287	{ DRM_MODE("800x600", DRM_MODE_TYPE_DRIVER, 40000, 800, 840,
		288	968, 1056, 0, 600, 601, 605, 628, 0,
		289	DRM_MODE_FLAG_PHSYNC \| DRM_MODE_FLAG_PVSYNC) },
		290	/* 800x600@72Hz */
		291	{ DRM_MODE("800x600", DRM_MODE_TYPE_DRIVER, 50000, 800, 856,
		292	976, 1040, 0, 600, 637, 643, 666, 0,
		293	DRM_MODE_FLAG_PHSYNC \| DRM_MODE_FLAG_PVSYNC) },
		294	/* 800x600@75Hz */
		295	{ DRM_MODE("800x600", DRM_MODE_TYPE_DRIVER, 49500, 800, 816,
		296	896, 1056, 0, 600, 601, 604, 625, 0,
		297	DRM_MODE_FLAG_PHSYNC \| DRM_MODE_FLAG_PVSYNC) },
		298	/* 800x600@85Hz */
		299	{ DRM_MODE("800x600", DRM_MODE_TYPE_DRIVER, 56250, 800, 832,
		300	896, 1048, 0, 600, 601, 604, 631, 0,
		301	DRM_MODE_FLAG_PHSYNC \| DRM_MODE_FLAG_PVSYNC) },
		302	/* 848x480@60Hz */
		303	{ DRM_MODE("848x480", DRM_MODE_TYPE_DRIVER, 33750, 848, 864,
		304	976, 1088, 0, 480, 486, 494, 517, 0,
		305	DRM_MODE_FLAG_PHSYNC \| DRM_MODE_FLAG_PVSYNC) },
		306	/* 1024x768@43Hz, interlace */
		307	{ DRM_MODE("1024x768", DRM_MODE_TYPE_DRIVER, 44900, 1024, 1032,
		308	1208, 1264, 0, 768, 768, 772, 817, 0,
		309	DRM_MODE_FLAG_PHSYNC \| DRM_MODE_FLAG_PVSYNC \|
		310	DRM_MODE_FLAG_INTERLACE) },
		311	/* 1024x768@60Hz */
		312	{ DRM_MODE("1024x768", DRM_MODE_TYPE_DRIVER, 65000, 1024, 1048,
		313	1184, 1344, 0, 768, 771, 777, 806, 0,
		314	DRM_MODE_FLAG_NHSYNC \| DRM_MODE_FLAG_NVSYNC) },
		315	/* 1024x768@70Hz */
		316	{ DRM_MODE("1024x768", DRM_MODE_TYPE_DRIVER, 75000, 1024, 1048,
		317	1184, 1328, 0, 768, 771, 777, 806, 0,
		318	DRM_MODE_FLAG_NHSYNC \| DRM_MODE_FLAG_NVSYNC) },
		319	/* 1024x768@75Hz */
		320	{ DRM_MODE("1024x768", DRM_MODE_TYPE_DRIVER, 78750, 1024, 1040,
		321	1136, 1312, 0, 768, 769, 772, 800, 0,
		322	DRM_MODE_FLAG_PHSYNC \| DRM_MODE_FLAG_PVSYNC) },
		323	/* 1024x768@85Hz */
		324	{ DRM_MODE("1024x768", DRM_MODE_TYPE_DRIVER, 94500, 1024, 1072,
		325	1072, 1376, 0, 768, 769, 772, 808, 0,
		326	DRM_MODE_FLAG_PHSYNC \| DRM_MODE_FLAG_PVSYNC) },
		327	/* 1152x864@75Hz */
		328	{ DRM_MODE("1152x864", DRM_MODE_TYPE_DRIVER, 108000, 1152, 1216,
		329	1344, 1600, 0, 864, 865, 868, 900, 0,
		330	DRM_MODE_FLAG_PHSYNC \| DRM_MODE_FLAG_PVSYNC) },
		331	/* 1280x768@60Hz */
		332	{ DRM_MODE("1280x768", DRM_MODE_TYPE_DRIVER, 79500, 1280, 1344,
		333	1472, 1664, 0, 768, 771, 778, 798, 0,
		334	DRM_MODE_FLAG_NHSYNC \| DRM_MODE_FLAG_PVSYNC) },
		335	/* 1280x768@75Hz */
		336	{ DRM_MODE("1280x768", DRM_MODE_TYPE_DRIVER, 102250, 1280, 1360,
		337	1488, 1696, 0, 768, 771, 778, 805, 0,
		338	DRM_MODE_FLAG_PHSYNC \| DRM_MODE_FLAG_NVSYNC) },
		339	/* 1280x768@85Hz */
		340	{ DRM_MODE("1280x768", DRM_MODE_TYPE_DRIVER, 117500, 1280, 1360,
		341	1496, 1712, 0, 768, 771, 778, 809, 0,
		342	DRM_MODE_FLAG_NHSYNC \| DRM_MODE_FLAG_PVSYNC) },
		343	/* 1280x800@60Hz */
		344	{ DRM_MODE("1280x800", DRM_MODE_TYPE_DRIVER, 83500, 1280, 1352,
		345	1480, 1680, 0, 800, 803, 809, 831, 0,
		346	DRM_MODE_FLAG_PHSYNC \| DRM_MODE_FLAG_NVSYNC) },
		347	/* 1280x800@75Hz */
		348	{ DRM_MODE("1280x800", DRM_MODE_TYPE_DRIVER, 106500, 1280, 1360,
		349	1488, 1696, 0, 800, 803, 809, 838, 0,
		350	DRM_MODE_FLAG_NHSYNC \| DRM_MODE_FLAG_PVSYNC) },
		351	/* 1280x800@85Hz */
		352	{ DRM_MODE("1280x800", DRM_MODE_TYPE_DRIVER, 122500, 1280, 1360,
		353	1496, 1712, 0, 800, 803, 809, 843, 0,
		354	DRM_MODE_FLAG_NHSYNC \| DRM_MODE_FLAG_PVSYNC) },
		355	/* 1280x960@60Hz */
		356	{ DRM_MODE("1280x960", DRM_MODE_TYPE_DRIVER, 108000, 1280, 1376,
		357	1488, 1800, 0, 960, 961, 964, 1000, 0,
		358	DRM_MODE_FLAG_PHSYNC \| DRM_MODE_FLAG_PVSYNC) },
		359	/* 1280x960@85Hz */
		360	{ DRM_MODE("1280x960", DRM_MODE_TYPE_DRIVER, 148500, 1280, 1344,
		361	1504, 1728, 0, 960, 961, 964, 1011, 0,
		362	DRM_MODE_FLAG_PHSYNC \| DRM_MODE_FLAG_PVSYNC) },
		363	/* 1280x1024@60Hz */
		364	{ DRM_MODE("1280x1024", DRM_MODE_TYPE_DRIVER, 108000, 1280, 1328,
		365	1440, 1688, 0, 1024, 1025, 1028, 1066, 0,
		366	DRM_MODE_FLAG_PHSYNC \| DRM_MODE_FLAG_PVSYNC) },
		367	/* 1280x1024@75Hz */
		368	{ DRM_MODE("1280x1024", DRM_MODE_TYPE_DRIVER, 135000, 1280, 1296,
		369	1440, 1688, 0, 1024, 1025, 1028, 1066, 0,
		370	DRM_MODE_FLAG_PHSYNC \| DRM_MODE_FLAG_PVSYNC) },
		371	/* 1280x1024@85Hz */
		372	{ DRM_MODE("1280x1024", DRM_MODE_TYPE_DRIVER, 157500, 1280, 1344,
		373	1504, 1728, 0, 1024, 1025, 1028, 1072, 0,
		374	DRM_MODE_FLAG_PHSYNC \| DRM_MODE_FLAG_PVSYNC) },
		375	/* 1360x768@60Hz */
		376	{ DRM_MODE("1360x768", DRM_MODE_TYPE_DRIVER, 85500, 1360, 1424,
		377	1536, 1792, 0, 768, 771, 777, 795, 0,
		378	DRM_MODE_FLAG_PHSYNC \| DRM_MODE_FLAG_PVSYNC) },
		379	/* 1440x1050@60Hz */
		380	{ DRM_MODE("1400x1050", DRM_MODE_TYPE_DRIVER, 121750, 1400, 1488,
		381	1632, 1864, 0, 1050, 1053, 1057, 1089, 0,
		382	DRM_MODE_FLAG_NHSYNC \| DRM_MODE_FLAG_PVSYNC) },
		383	/* 1440x1050@75Hz */
		384	{ DRM_MODE("1400x1050", DRM_MODE_TYPE_DRIVER, 156000, 1400, 1504,
		385	1648, 1896, 0, 1050, 1053, 1057, 1099, 0,
		386	DRM_MODE_FLAG_NHSYNC \| DRM_MODE_FLAG_PVSYNC) },
		387	/* 1440x1050@85Hz */
		388	{ DRM_MODE("1400x1050", DRM_MODE_TYPE_DRIVER, 179500, 1400, 1504,
		389	1656, 1912, 0, 1050, 1053, 1057, 1105, 0,
		390	DRM_MODE_FLAG_NHSYNC \| DRM_MODE_FLAG_PVSYNC) },
		391	/* 1440x900@60Hz */
		392	{ DRM_MODE("1440x900", DRM_MODE_TYPE_DRIVER, 106500, 1440, 1520,
		393	1672, 1904, 0, 900, 903, 909, 934, 0,
		394	DRM_MODE_FLAG_NHSYNC \| DRM_MODE_FLAG_PVSYNC) },
		395	/* 1440x900@75Hz */
		396	{ DRM_MODE("1440x900", DRM_MODE_TYPE_DRIVER, 136750, 1440, 1536,
		397	1688, 1936, 0, 900, 903, 909, 942, 0,
		398	DRM_MODE_FLAG_NHSYNC \| DRM_MODE_FLAG_PVSYNC) },
		399	/* 1440x900@85Hz */
		400	{ DRM_MODE("1440x900", DRM_MODE_TYPE_DRIVER, 157000, 1440, 1544,
		401	1696, 1952, 0, 900, 903, 909, 948, 0,
		402	DRM_MODE_FLAG_NHSYNC \| DRM_MODE_FLAG_PVSYNC) },
		403	/* 1600x1200@60Hz */
		404	{ DRM_MODE("1600x1200", DRM_MODE_TYPE_DRIVER, 162000, 1600, 1664,
		405	1856, 2160, 0, 1200, 1201, 1204, 1250, 0,
		406	DRM_MODE_FLAG_PHSYNC \| DRM_MODE_FLAG_PVSYNC) },
		407	/* 1600x1200@65Hz */
		408	{ DRM_MODE("1600x1200", DRM_MODE_TYPE_DRIVER, 175500, 1600, 1664,
		409	1856, 2160, 0, 1200, 1201, 1204, 1250, 0,
		410	DRM_MODE_FLAG_PHSYNC \| DRM_MODE_FLAG_PVSYNC) },
		411	/* 1600x1200@70Hz */
		412	{ DRM_MODE("1600x1200", DRM_MODE_TYPE_DRIVER, 189000, 1600, 1664,
		413	1856, 2160, 0, 1200, 1201, 1204, 1250, 0,
		414	DRM_MODE_FLAG_PHSYNC \| DRM_MODE_FLAG_PVSYNC) },
		415	/* 1600x1200@75Hz */
		416	{ DRM_MODE("1600x1200", DRM_MODE_TYPE_DRIVER, 2025000, 1600, 1664,
		417	1856, 2160, 0, 1200, 1201, 1204, 1250, 0,
		418	DRM_MODE_FLAG_PHSYNC \| DRM_MODE_FLAG_PVSYNC) },
		419	/* 1600x1200@85Hz */
		420	{ DRM_MODE("1600x1200", DRM_MODE_TYPE_DRIVER, 229500, 1600, 1664,
		421	1856, 2160, 0, 1200, 1201, 1204, 1250, 0,
		422	DRM_MODE_FLAG_PHSYNC \| DRM_MODE_FLAG_PVSYNC) },
		423	/* 1680x1050@60Hz */
		424	{ DRM_MODE("1680x1050", DRM_MODE_TYPE_DRIVER, 146250, 1680, 1784,
		425	1960, 2240, 0, 1050, 1053, 1059, 1089, 0,
		426	DRM_MODE_FLAG_NHSYNC \| DRM_MODE_FLAG_PVSYNC) },
		427	/* 1680x1050@75Hz */
		428	{ DRM_MODE("1680x1050", DRM_MODE_TYPE_DRIVER, 187000, 1680, 1800,
		429	1976, 2272, 0, 1050, 1053, 1059, 1099, 0,
		430	DRM_MODE_FLAG_NHSYNC \| DRM_MODE_FLAG_PVSYNC) },
		431	/* 1680x1050@85Hz */
		432	{ DRM_MODE("1680x1050", DRM_MODE_TYPE_DRIVER, 214750, 1680, 1808,
		433	1984, 2288, 0, 1050, 1053, 1059, 1105, 0,
		434	DRM_MODE_FLAG_NHSYNC \| DRM_MODE_FLAG_PVSYNC) },
		435	/* 1792x1344@60Hz */
		436	{ DRM_MODE("1792x1344", DRM_MODE_TYPE_DRIVER, 204750, 1792, 1920,
		437	2120, 2448, 0, 1344, 1345, 1348, 1394, 0,
		438	DRM_MODE_FLAG_NHSYNC \| DRM_MODE_FLAG_PVSYNC) },
		439	/* 1729x1344@75Hz */
		440	{ DRM_MODE("1792x1344", DRM_MODE_TYPE_DRIVER, 261000, 1792, 1888,
		441	2104, 2456, 0, 1344, 1345, 1348, 1417, 0,
		442	DRM_MODE_FLAG_NHSYNC \| DRM_MODE_FLAG_PVSYNC) },
		443	/* 1853x1392@60Hz */
		444	{ DRM_MODE("1856x1392", DRM_MODE_TYPE_DRIVER, 218250, 1856, 1952,
		445	2176, 2528, 0, 1392, 1393, 1396, 1439, 0,
		446	DRM_MODE_FLAG_NHSYNC \| DRM_MODE_FLAG_PVSYNC) },
		447	/* 1856x1392@75Hz */
		448	{ DRM_MODE("1856x1392", DRM_MODE_TYPE_DRIVER, 288000, 1856, 1984,
		449	2208, 2560, 0, 1392, 1395, 1399, 1500, 0,
		450	DRM_MODE_FLAG_NHSYNC \| DRM_MODE_FLAG_PVSYNC) },
		451	/* 1920x1200@60Hz */
		452	{ DRM_MODE("1920x1200", DRM_MODE_TYPE_DRIVER, 193250, 1920, 2056,
		453	2256, 2592, 0, 1200, 1203, 1209, 1245, 0,
		454	DRM_MODE_FLAG_NHSYNC \| DRM_MODE_FLAG_PVSYNC) },
		455	/* 1920x1200@75Hz */
		456	{ DRM_MODE("1920x1200", DRM_MODE_TYPE_DRIVER, 245250, 1920, 2056,
		457	2264, 2608, 0, 1200, 1203, 1209, 1255, 0,
		458	DRM_MODE_FLAG_NHSYNC \| DRM_MODE_FLAG_PVSYNC) },
		459	/* 1920x1200@85Hz */
		460	{ DRM_MODE("1920x1200", DRM_MODE_TYPE_DRIVER, 281250, 1920, 2064,
		461	2272, 2624, 0, 1200, 1203, 1209, 1262, 0,
		462	DRM_MODE_FLAG_NHSYNC \| DRM_MODE_FLAG_PVSYNC) },
		463	/* 1920x1440@60Hz */
		464	{ DRM_MODE("1920x1440", DRM_MODE_TYPE_DRIVER, 234000, 1920, 2048,
		465	2256, 2600, 0, 1440, 1441, 1444, 1500, 0,
		466	DRM_MODE_FLAG_NHSYNC \| DRM_MODE_FLAG_PVSYNC) },
		467	/* 1920x1440@75Hz */
		468	{ DRM_MODE("1920x1440", DRM_MODE_TYPE_DRIVER, 297000, 1920, 2064,
		469	2288, 2640, 0, 1440, 1441, 1444, 1500, 0,
		470	DRM_MODE_FLAG_NHSYNC \| DRM_MODE_FLAG_PVSYNC) },
		471	/* 2560x1600@60Hz */
		472	{ DRM_MODE("2560x1600", DRM_MODE_TYPE_DRIVER, 348500, 2560, 2752,
		473	3032, 3504, 0, 1600, 1603, 1609, 1658, 0,
		474	DRM_MODE_FLAG_NHSYNC \| DRM_MODE_FLAG_PVSYNC) },
		475	/* 2560x1600@75HZ */
		476	{ DRM_MODE("2560x1600", DRM_MODE_TYPE_DRIVER, 443250, 2560, 2768,
		477	3048, 3536, 0, 1600, 1603, 1609, 1672, 0,
		478	DRM_MODE_FLAG_NHSYNC \| DRM_MODE_FLAG_PVSYNC) },
		479	/* 2560x1600@85HZ */
		480	{ DRM_MODE("2560x1600", DRM_MODE_TYPE_DRIVER, 505250, 2560, 2768,
		481	3048, 3536, 0, 1600, 1603, 1609, 1682, 0,
		482	DRM_MODE_FLAG_NHSYNC \| DRM_MODE_FLAG_PVSYNC) },
		483	};
		484
		485	static struct drm_display_mode drm_find_dmt(struct drm_device dev,
		486	int hsize, int vsize, int fresh)
		487	{
		488	int i, count;
		489	struct drm_display_mode ptr, mode;
		490
		491	count = sizeof(drm_dmt_modes) / sizeof(struct drm_display_mode);
		492	mode = NULL;
		493	for (i = 0; i < count; i++) {
		494	ptr = &drm_dmt_modes[i];
		495	if (hsize == ptr->hdisplay &&
		496	vsize == ptr->vdisplay &&
		497	fresh == drm_mode_vrefresh(ptr)) {
		498	/* get the expected default mode */
		499	mode = drm_mode_duplicate(dev, ptr);
		500	break;
		501	}
		502	}
		503	return mode;
		504	}
1221	serge	505
		506	/*
		507	* 0 is reserved. The spec says 0x01 fill for unused timings. Some old
		508	* monitors fill with ascii space (0x20) instead.
		509	*/
		510	static int
		511	bad_std_timing(u8 a, u8 b)
		512	{
		513	return (a == 0x00 && b == 0x00) \|\|
		514	(a == 0x01 && b == 0x01) \|\|
		515	(a == 0x20 && b == 0x20);
		516	}
		517
1123	serge	518	/**
		519	* drm_mode_std - convert standard mode info (width, height, refresh) into mode
		520	* @t: standard timing params
1221	serge	521	* @timing_level: standard timing level
1123	serge	522	*
		523	* Take the standard timing params (in this case width, aspect, and refresh)
1221	serge	524	* and convert them into a real mode using CVT/GTF/DMT.
1123	serge	525	*
		526	* Punts for now, but should eventually use the FB layer's CVT based mode
		527	* generation code.
		528	*/
		529	struct drm_display_mode drm_mode_std(struct drm_device dev,
1179	serge	530	struct std_timing *t,
1221	serge	531	int revision,
1179	serge	532	int timing_level)
1123	serge	533	{
		534	struct drm_display_mode *mode;
1179	serge	535	int hsize, vsize;
		536	int vrefresh_rate;
1123	serge	537	unsigned aspect_ratio = (t->vfreq_aspect & EDID_TIMING_ASPECT_MASK)
		538	>> EDID_TIMING_ASPECT_SHIFT;
1179	serge	539	unsigned vfreq = (t->vfreq_aspect & EDID_TIMING_VFREQ_MASK)
		540	>> EDID_TIMING_VFREQ_SHIFT;
1123	serge	541
1221	serge	542	if (bad_std_timing(t->hsize, t->vfreq_aspect))
		543	return NULL;
		544
1179	serge	545	/* According to the EDID spec, the hdisplay = hsize * 8 + 248 */
		546	hsize = t->hsize * 8 + 248;
		547	/* vrefresh_rate = vfreq + 60 */
		548	vrefresh_rate = vfreq + 60;
		549	/* the vdisplay is calculated based on the aspect ratio */
1221	serge	550	if (aspect_ratio == 0) {
		551	if (revision < 3)
		552	vsize = hsize;
		553	else
1123	serge	554	vsize = (hsize * 10) / 16;
1221	serge	555	} else if (aspect_ratio == 1)
1123	serge	556	vsize = (hsize * 3) / 4;
		557	else if (aspect_ratio == 2)
		558	vsize = (hsize * 4) / 5;
		559	else
		560	vsize = (hsize * 9) / 16;
1179	serge	561	/* HDTV hack */
		562	if (hsize == 1360 && vsize == 765 && vrefresh_rate == 60) {
1221	serge	563	mode = drm_cvt_mode(dev, hsize, vsize, vrefresh_rate, 0, 0,
		564	false);
1179	serge	565	mode->hdisplay = 1366;
		566	mode->vsync_start = mode->vsync_start - 1;
		567	mode->vsync_end = mode->vsync_end - 1;
		568	return mode;
		569	}
		570	mode = NULL;
		571	/* check whether it can be found in default mode table */
		572	mode = drm_find_dmt(dev, hsize, vsize, vrefresh_rate);
		573	if (mode)
		574	return mode;
1123	serge	575
1179	serge	576	switch (timing_level) {
		577	case LEVEL_DMT:
		578	break;
		579	case LEVEL_GTF:
		580	mode = drm_gtf_mode(dev, hsize, vsize, vrefresh_rate, 0, 0);
		581	break;
		582	case LEVEL_CVT:
1221	serge	583	mode = drm_cvt_mode(dev, hsize, vsize, vrefresh_rate, 0, 0,
		584	false);
1179	serge	585	break;
		586	}
1123	serge	587	return mode;
		588	}
		589
		590	/**
		591	* drm_mode_detailed - create a new mode from an EDID detailed timing section
		592	* @dev: DRM device (needed to create new mode)
		593	* @edid: EDID block
		594	* @timing: EDID detailed timing info
		595	* @quirks: quirks to apply
		596	*
		597	* An EDID detailed timing block contains enough info for us to create and
		598	* return a new struct drm_display_mode.
		599	*/
		600	static struct drm_display_mode drm_mode_detailed(struct drm_device dev,
		601	struct edid *edid,
		602	struct detailed_timing *timing,
		603	u32 quirks)
		604	{
		605	struct drm_display_mode *mode;
		606	struct detailed_pixel_timing *pt = &timing->data.pixel_data;
		607	unsigned hactive = (pt->hactive_hblank_hi & 0xf0) << 4 \| pt->hactive_lo;
		608	unsigned vactive = (pt->vactive_vblank_hi & 0xf0) << 4 \| pt->vactive_lo;
		609	unsigned hblank = (pt->hactive_hblank_hi & 0xf) << 8 \| pt->hblank_lo;
		610	unsigned vblank = (pt->vactive_vblank_hi & 0xf) << 8 \| pt->vblank_lo;
		611	unsigned hsync_offset = (pt->hsync_vsync_offset_pulse_width_hi & 0xc0) << 2 \| pt->hsync_offset_lo;
		612	unsigned hsync_pulse_width = (pt->hsync_vsync_offset_pulse_width_hi & 0x30) << 4 \| pt->hsync_pulse_width_lo;
		613	unsigned vsync_offset = (pt->hsync_vsync_offset_pulse_width_hi & 0xc) >> 2 \| pt->vsync_offset_pulse_width_lo >> 4;
		614	unsigned vsync_pulse_width = (pt->hsync_vsync_offset_pulse_width_hi & 0x3) << 4 \| (pt->vsync_offset_pulse_width_lo & 0xf);
		615
		616	/* ignore tiny modes */
		617	if (hactive < 64 \|\| vactive < 64)
		618	return NULL;
		619
		620	if (pt->misc & DRM_EDID_PT_STEREO) {
		621	printk(KERN_WARNING "stereo mode not supported\n");
		622	return NULL;
		623	}
		624	if (!(pt->misc & DRM_EDID_PT_SEPARATE_SYNC)) {
		625	printk(KERN_WARNING "integrated sync not supported\n");
		626	return NULL;
		627	}
		628
		629	mode = drm_mode_create(dev);
		630	if (!mode)
		631	return NULL;
		632
		633	mode->type = DRM_MODE_TYPE_DRIVER;
		634
		635	if (quirks & EDID_QUIRK_135_CLOCK_TOO_HIGH)
		636	timing->pixel_clock = cpu_to_le16(1088);
		637
		638	mode->clock = le16_to_cpu(timing->pixel_clock) * 10;
		639
		640	mode->hdisplay = hactive;
		641	mode->hsync_start = mode->hdisplay + hsync_offset;
		642	mode->hsync_end = mode->hsync_start + hsync_pulse_width;
		643	mode->htotal = mode->hdisplay + hblank;
		644
		645	mode->vdisplay = vactive;
		646	mode->vsync_start = mode->vdisplay + vsync_offset;
		647	mode->vsync_end = mode->vsync_start + vsync_pulse_width;
		648	mode->vtotal = mode->vdisplay + vblank;
		649
		650	drm_mode_set_name(mode);
		651
		652	if (pt->misc & DRM_EDID_PT_INTERLACED)
		653	mode->flags \|= DRM_MODE_FLAG_INTERLACE;
		654
		655	if (quirks & EDID_QUIRK_DETAILED_SYNC_PP) {
		656	pt->misc \|= DRM_EDID_PT_HSYNC_POSITIVE \| DRM_EDID_PT_VSYNC_POSITIVE;
		657	}
		658
		659	mode->flags \|= (pt->misc & DRM_EDID_PT_HSYNC_POSITIVE) ?
		660	DRM_MODE_FLAG_PHSYNC : DRM_MODE_FLAG_NHSYNC;
		661	mode->flags \|= (pt->misc & DRM_EDID_PT_VSYNC_POSITIVE) ?
		662	DRM_MODE_FLAG_PVSYNC : DRM_MODE_FLAG_NVSYNC;
		663
		664	mode->width_mm = pt->width_mm_lo \| (pt->width_height_mm_hi & 0xf0) << 4;
		665	mode->height_mm = pt->height_mm_lo \| (pt->width_height_mm_hi & 0xf) << 8;
		666
		667	if (quirks & EDID_QUIRK_DETAILED_IN_CM) {
		668	mode->width_mm *= 10;
		669	mode->height_mm *= 10;
		670	}
		671
		672	if (quirks & EDID_QUIRK_DETAILED_USE_MAXIMUM_SIZE) {
		673	mode->width_mm = edid->width_cm * 10;
		674	mode->height_mm = edid->height_cm * 10;
		675	}
		676
		677	return mode;
		678	}
		679
		680	/*
		681	* Detailed mode info for the EDID "established modes" data to use.
		682	*/
		683	static struct drm_display_mode edid_est_modes[] = {
		684	{ DRM_MODE("800x600", DRM_MODE_TYPE_DRIVER, 40000, 800, 840,
		685	968, 1056, 0, 600, 601, 605, 628, 0,
		686	DRM_MODE_FLAG_PHSYNC \| DRM_MODE_FLAG_PVSYNC) }, /* 800x600@60Hz */
		687	{ DRM_MODE("800x600", DRM_MODE_TYPE_DRIVER, 36000, 800, 824,
		688	896, 1024, 0, 600, 601, 603, 625, 0,
		689	DRM_MODE_FLAG_PHSYNC \| DRM_MODE_FLAG_PVSYNC) }, /* 800x600@56Hz */
		690	{ DRM_MODE("640x480", DRM_MODE_TYPE_DRIVER, 31500, 640, 656,
		691	720, 840, 0, 480, 481, 484, 500, 0,
		692	DRM_MODE_FLAG_NHSYNC \| DRM_MODE_FLAG_NVSYNC) }, /* 640x480@75Hz */
		693	{ DRM_MODE("640x480", DRM_MODE_TYPE_DRIVER, 31500, 640, 664,
		694	704, 832, 0, 480, 489, 491, 520, 0,
		695	DRM_MODE_FLAG_NHSYNC \| DRM_MODE_FLAG_NVSYNC) }, /* 640x480@72Hz */
		696	{ DRM_MODE("640x480", DRM_MODE_TYPE_DRIVER, 30240, 640, 704,
		697	768, 864, 0, 480, 483, 486, 525, 0,
		698	DRM_MODE_FLAG_NHSYNC \| DRM_MODE_FLAG_NVSYNC) }, /* 640x480@67Hz */
		699	{ DRM_MODE("640x480", DRM_MODE_TYPE_DRIVER, 25200, 640, 656,
		700	752, 800, 0, 480, 490, 492, 525, 0,
		701	DRM_MODE_FLAG_NHSYNC \| DRM_MODE_FLAG_NVSYNC) }, /* 640x480@60Hz */
		702	{ DRM_MODE("720x400", DRM_MODE_TYPE_DRIVER, 35500, 720, 738,
		703	846, 900, 0, 400, 421, 423, 449, 0,
		704	DRM_MODE_FLAG_NHSYNC \| DRM_MODE_FLAG_NVSYNC) }, /* 720x400@88Hz */
		705	{ DRM_MODE("720x400", DRM_MODE_TYPE_DRIVER, 28320, 720, 738,
		706	846, 900, 0, 400, 412, 414, 449, 0,
		707	DRM_MODE_FLAG_NHSYNC \| DRM_MODE_FLAG_PVSYNC) }, /* 720x400@70Hz */
		708	{ DRM_MODE("1280x1024", DRM_MODE_TYPE_DRIVER, 135000, 1280, 1296,
		709	1440, 1688, 0, 1024, 1025, 1028, 1066, 0,
		710	DRM_MODE_FLAG_PHSYNC \| DRM_MODE_FLAG_PVSYNC) }, /* 1280x1024@75Hz */
		711	{ DRM_MODE("1024x768", DRM_MODE_TYPE_DRIVER, 78800, 1024, 1040,
		712	1136, 1312, 0, 768, 769, 772, 800, 0,
		713	DRM_MODE_FLAG_PHSYNC \| DRM_MODE_FLAG_PVSYNC) }, /* 1024x768@75Hz */
		714	{ DRM_MODE("1024x768", DRM_MODE_TYPE_DRIVER, 75000, 1024, 1048,
		715	1184, 1328, 0, 768, 771, 777, 806, 0,
		716	DRM_MODE_FLAG_NHSYNC \| DRM_MODE_FLAG_NVSYNC) }, /* 1024x768@70Hz */
		717	{ DRM_MODE("1024x768", DRM_MODE_TYPE_DRIVER, 65000, 1024, 1048,
		718	1184, 1344, 0, 768, 771, 777, 806, 0,
		719	DRM_MODE_FLAG_NHSYNC \| DRM_MODE_FLAG_NVSYNC) }, /* 1024x768@60Hz */
		720	{ DRM_MODE("1024x768", DRM_MODE_TYPE_DRIVER,44900, 1024, 1032,
		721	1208, 1264, 0, 768, 768, 776, 817, 0,
		722	DRM_MODE_FLAG_PHSYNC \| DRM_MODE_FLAG_PVSYNC \| DRM_MODE_FLAG_INTERLACE) }, /* 1024x768@43Hz */
		723	{ DRM_MODE("832x624", DRM_MODE_TYPE_DRIVER, 57284, 832, 864,
		724	928, 1152, 0, 624, 625, 628, 667, 0,
		725	DRM_MODE_FLAG_NHSYNC \| DRM_MODE_FLAG_NVSYNC) }, /* 832x624@75Hz */
		726	{ DRM_MODE("800x600", DRM_MODE_TYPE_DRIVER, 49500, 800, 816,
		727	896, 1056, 0, 600, 601, 604, 625, 0,
		728	DRM_MODE_FLAG_PHSYNC \| DRM_MODE_FLAG_PVSYNC) }, /* 800x600@75Hz */
		729	{ DRM_MODE("800x600", DRM_MODE_TYPE_DRIVER, 50000, 800, 856,
		730	976, 1040, 0, 600, 637, 643, 666, 0,
		731	DRM_MODE_FLAG_PHSYNC \| DRM_MODE_FLAG_PVSYNC) }, /* 800x600@72Hz */
		732	{ DRM_MODE("1152x864", DRM_MODE_TYPE_DRIVER, 108000, 1152, 1216,
		733	1344, 1600, 0, 864, 865, 868, 900, 0,
		734	DRM_MODE_FLAG_PHSYNC \| DRM_MODE_FLAG_PVSYNC) }, /* 1152x864@75Hz */
		735	};
		736
		737	#define EDID_EST_TIMINGS 16
		738	#define EDID_STD_TIMINGS 8
		739	#define EDID_DETAILED_TIMINGS 4
		740
		741	/**
		742	* add_established_modes - get est. modes from EDID and add them
		743	* @edid: EDID block to scan
		744	*
		745	* Each EDID block contains a bitmap of the supported "established modes" list
		746	* (defined above). Tease them out and add them to the global modes list.
		747	*/
		748	static int add_established_modes(struct drm_connector connector, struct edid edid)
		749	{
		750	struct drm_device *dev = connector->dev;
		751	unsigned long est_bits = edid->established_timings.t1 \|
		752	(edid->established_timings.t2 << 8) \|
		753	((edid->established_timings.mfg_rsvd & 0x80) << 9);
		754	int i, modes = 0;
		755
		756	for (i = 0; i <= EDID_EST_TIMINGS; i++)
		757	if (est_bits & (1<
		758	struct drm_display_mode *newmode;
		759	newmode = drm_mode_duplicate(dev, &edid_est_modes[i]);
		760	if (newmode) {
		761	drm_mode_probed_add(connector, newmode);
		762	modes++;
		763	}
		764	}
		765
		766	return modes;
		767	}
1179	serge	768	/**
		769	* stanard_timing_level - get std. timing level(CVT/GTF/DMT)
		770	* @edid: EDID block to scan
		771	*/
		772	static int standard_timing_level(struct edid *edid)
		773	{
		774	if (edid->revision >= 2) {
		775	if (edid->revision >= 4 && (edid->features & DRM_EDID_FEATURE_DEFAULT_GTF))
		776	return LEVEL_CVT;
		777	return LEVEL_GTF;
		778	}
		779	return LEVEL_DMT;
		780	}
1123	serge	781
		782	/**
		783	* add_standard_modes - get std. modes from EDID and add them
		784	* @edid: EDID block to scan
		785	*
		786	* Standard modes can be calculated using the CVT standard. Grab them from
		787	* @edid, calculate them, and add them to the list.
		788	*/
		789	static int add_standard_modes(struct drm_connector connector, struct edid edid)
		790	{
		791	struct drm_device *dev = connector->dev;
		792	int i, modes = 0;
1179	serge	793	int timing_level;
1123	serge	794
1179	serge	795	timing_level = standard_timing_level(edid);
		796
1123	serge	797	for (i = 0; i < EDID_STD_TIMINGS; i++) {
		798	struct std_timing *t = &edid->standard_timings[i];
		799	struct drm_display_mode *newmode;
		800
		801	/* If std timings bytes are 1, 1 it's empty */
		802	if (t->hsize == 1 && t->vfreq_aspect == 1)
		803	continue;
		804
1179	serge	805	newmode = drm_mode_std(dev, &edid->standard_timings[i],
1221	serge	806	edid->revision, timing_level);
1123	serge	807	if (newmode) {
		808	drm_mode_probed_add(connector, newmode);
		809	modes++;
		810	}
		811	}
		812
		813	return modes;
		814	}
		815
		816	/**
		817	* add_detailed_modes - get detailed mode info from EDID data
		818	* @connector: attached connector
		819	* @edid: EDID block to scan
		820	* @quirks: quirks to apply
		821	*
		822	* Some of the detailed timing sections may contain mode information. Grab
		823	* it and add it to the list.
		824	*/
		825	static int add_detailed_info(struct drm_connector *connector,
		826	struct edid *edid, u32 quirks)
		827	{
		828	struct drm_device *dev = connector->dev;
		829	int i, j, modes = 0;
1179	serge	830	int timing_level;
1123	serge	831
1179	serge	832	timing_level = standard_timing_level(edid);
		833
1123	serge	834	for (i = 0; i < EDID_DETAILED_TIMINGS; i++) {
		835	struct detailed_timing *timing = &edid->detailed_timings[i];
		836	struct detailed_non_pixel *data = &timing->data.other_data;
		837	struct drm_display_mode *newmode;
		838
1179	serge	839	/* X server check is version 1.1 or higher */
		840	if (edid->version == 1 && edid->revision >= 1 &&
		841	!timing->pixel_clock) {
		842	/* Other timing or info */
		843	switch (data->type) {
		844	case EDID_DETAIL_MONITOR_SERIAL:
		845	break;
		846	case EDID_DETAIL_MONITOR_STRING:
		847	break;
		848	case EDID_DETAIL_MONITOR_RANGE:
		849	/* Get monitor range data */
		850	break;
		851	case EDID_DETAIL_MONITOR_NAME:
		852	break;
		853	case EDID_DETAIL_MONITOR_CPDATA:
		854	break;
		855	case EDID_DETAIL_STD_MODES:
1221	serge	856	for (j = 0; j < 6; i++) {
1179	serge	857	struct std_timing *std;
		858	struct drm_display_mode *newmode;
1123	serge	859
1179	serge	860	std = &data->data.timings[j];
		861	newmode = drm_mode_std(dev, std,
1221	serge	862	edid->revision,
1179	serge	863	timing_level);
		864	if (newmode) {
		865	drm_mode_probed_add(connector, newmode);
		866	modes++;
		867	}
		868	}
		869	break;
		870	default:
		871	break;
		872	}
		873	} else {
1123	serge	874	newmode = drm_mode_detailed(dev, edid, timing, quirks);
		875	if (!newmode)
		876	continue;
		877
		878	/* First detailed mode is preferred */
		879	if (i == 0 && (edid->features & DRM_EDID_FEATURE_PREFERRED_TIMING))
		880	newmode->type \|= DRM_MODE_TYPE_PREFERRED;
		881	drm_mode_probed_add(connector, newmode);
		882
		883	modes++;
1179	serge	884	}
		885	}
		886
		887	return modes;
		888	}
		889	/**
		890	* add_detailed_mode_eedid - get detailed mode info from addtional timing
		891	* EDID block
		892	* @connector: attached connector
		893	* @edid: EDID block to scan(It is only to get addtional timing EDID block)
		894	* @quirks: quirks to apply
		895	*
		896	* Some of the detailed timing sections may contain mode information. Grab
		897	* it and add it to the list.
		898	*/
		899	static int add_detailed_info_eedid(struct drm_connector *connector,
		900	struct edid *edid, u32 quirks)
		901	{
		902	struct drm_device *dev = connector->dev;
		903	int i, j, modes = 0;
		904	char *edid_ext = NULL;
		905	struct detailed_timing *timing;
		906	struct detailed_non_pixel *data;
		907	struct drm_display_mode *newmode;
		908	int edid_ext_num;
		909	int start_offset, end_offset;
		910	int timing_level;
		911
		912	if (edid->version == 1 && edid->revision < 3) {
		913	/* If the EDID version is less than 1.3, there is no
		914	* extension EDID.
		915	*/
		916	return 0;
		917	}
		918	if (!edid->extensions) {
		919	/* if there is no extension EDID, it is unnecessary to
		920	* parse the E-EDID to get detailed info
		921	*/
		922	return 0;
		923	}
		924
		925	/* Chose real EDID extension number */
		926	edid_ext_num = edid->extensions > MAX_EDID_EXT_NUM ?
		927	MAX_EDID_EXT_NUM : edid->extensions;
		928
		929	/* Find CEA extension */
		930	for (i = 0; i < edid_ext_num; i++) {
		931	edid_ext = (char )edid + EDID_LENGTH (i + 1);
		932	/* This block is CEA extension */
		933	if (edid_ext[0] == 0x02)
		934	break;
		935	}
		936
		937	if (i == edid_ext_num) {
		938	/* if there is no additional timing EDID block, return */
		939	return 0;
		940	}
		941
		942	/* Get the start offset of detailed timing block */
		943	start_offset = edid_ext[2];
		944	if (start_offset == 0) {
		945	/* If the start_offset is zero, it means that neither detailed
		946	* info nor data block exist. In such case it is also
		947	* unnecessary to parse the detailed timing info.
		948	*/
		949	return 0;
		950	}
		951
		952	timing_level = standard_timing_level(edid);
		953	end_offset = EDID_LENGTH;
		954	end_offset -= sizeof(struct detailed_timing);
		955	for (i = start_offset; i < end_offset;
		956	i += sizeof(struct detailed_timing)) {
		957	timing = (struct detailed_timing *)(edid_ext + i);
		958	data = &timing->data.other_data;
		959	/* Detailed mode timing */
		960	if (timing->pixel_clock) {
		961	newmode = drm_mode_detailed(dev, edid, timing, quirks);
		962	if (!newmode)
		963	continue;
		964
		965	drm_mode_probed_add(connector, newmode);
		966
		967	modes++;
1123	serge	968	continue;
		969	}
		970
		971	/* Other timing or info */
		972	switch (data->type) {
		973	case EDID_DETAIL_MONITOR_SERIAL:
		974	break;
		975	case EDID_DETAIL_MONITOR_STRING:
		976	break;
		977	case EDID_DETAIL_MONITOR_RANGE:
		978	/* Get monitor range data */
		979	break;
		980	case EDID_DETAIL_MONITOR_NAME:
		981	break;
		982	case EDID_DETAIL_MONITOR_CPDATA:
		983	break;
		984	case EDID_DETAIL_STD_MODES:
		985	/* Five modes per detailed section */
		986	for (j = 0; j < 5; i++) {
		987	struct std_timing *std;
		988	struct drm_display_mode *newmode;
		989
		990	std = &data->data.timings[j];
1221	serge	991	newmode = drm_mode_std(dev, std,
		992	edid->revision,
		993	timing_level);
1123	serge	994	if (newmode) {
		995	drm_mode_probed_add(connector, newmode);
		996	modes++;
		997	}
		998	}
		999	break;
		1000	default:
		1001	break;
		1002	}
		1003	}
		1004
		1005	return modes;
		1006	}
		1007
		1008	#define DDC_ADDR 0x50
		1009	/**
		1010	* Get EDID information via I2C.
		1011	*
		1012	* \param adapter : i2c device adaptor
		1013	* \param buf : EDID data buffer to be filled
		1014	* \param len : EDID data buffer length
		1015	* \return 0 on success or -1 on failure.
		1016	*
		1017	* Try to fetch EDID information by calling i2c driver function.
		1018	*/
		1019	int drm_do_probe_ddc_edid(struct i2c_adapter *adapter,
		1020	unsigned char *buf, int len)
		1021	{
		1022	unsigned char start = 0x0;
		1023	struct i2c_msg msgs[] = {
		1024	{
		1025	.addr = DDC_ADDR,
		1026	.flags = 0,
		1027	.len = 1,
		1028	.buf = &start,
		1029	}, {
		1030	.addr = DDC_ADDR,
		1031	.flags = I2C_M_RD,
		1032	.len = len,
		1033	.buf = buf,
		1034	}
		1035	};
		1036
		1037	if (i2c_transfer(adapter, msgs, 2) == 2)
		1038	return 0;
		1039
		1040	return -1;
		1041	}
		1042	EXPORT_SYMBOL(drm_do_probe_ddc_edid);
		1043
		1044	static int drm_ddc_read_edid(struct drm_connector *connector,
		1045	struct i2c_adapter *adapter,
		1046	char *buf, int len)
		1047	{
		1048	int ret;
		1049
		1050	ret = drm_do_probe_ddc_edid(adapter, buf, len);
		1051	if (ret != 0) {
		1052	goto end;
		1053	}
		1054	if (!edid_is_valid((struct edid *)buf)) {
		1055	// dev_warn(&connector->dev->pdev->dev, "%s: EDID invalid.\n",
		1056	// drm_get_connector_name(connector));
		1057	ret = -1;
		1058	}
		1059	end:
		1060	return ret;
		1061	}
		1062
		1063	/**
		1064	* drm_get_edid - get EDID data, if available
		1065	* @connector: connector we're probing
		1066	* @adapter: i2c adapter to use for DDC
		1067	*
		1068	* Poke the given connector's i2c channel to grab EDID data if possible.
		1069	*
		1070	* Return edid data or NULL if we couldn't find any.
		1071	*/
		1072	struct edid drm_get_edid(struct drm_connector connector,
		1073	struct i2c_adapter *adapter)
		1074	{
		1075	int ret;
		1076	struct edid *edid;
		1077
		1078	edid = kmalloc(EDID_LENGTH * (MAX_EDID_EXT_NUM + 1),
		1079	GFP_KERNEL);
		1080	if (edid == NULL) {
		1081	// dev_warn(&connector->dev->pdev->dev,
		1082	// "Failed to allocate EDID\n");
		1083	goto end;
		1084	}
		1085
		1086	/* Read first EDID block */
		1087	ret = drm_ddc_read_edid(connector, adapter,
		1088	(unsigned char *)edid, EDID_LENGTH);
		1089	if (ret != 0)
		1090	goto clean_up;
		1091
		1092	/* There are EDID extensions to be read */
		1093	if (edid->extensions != 0) {
		1094	int edid_ext_num = edid->extensions;
		1095
		1096	if (edid_ext_num > MAX_EDID_EXT_NUM) {
		1097	// dev_warn(&connector->dev->pdev->dev,
		1098	// "The number of extension(%d) is "
		1099	// "over max (%d), actually read number (%d)\n",
		1100	// edid_ext_num, MAX_EDID_EXT_NUM,
		1101	// MAX_EDID_EXT_NUM);
		1102	/* Reset EDID extension number to be read */
		1103	edid_ext_num = MAX_EDID_EXT_NUM;
		1104	}
		1105	/* Read EDID including extensions too */
		1106	ret = drm_ddc_read_edid(connector, adapter, (char *)edid,
		1107	EDID_LENGTH * (edid_ext_num + 1));
		1108	if (ret != 0)
		1109	goto clean_up;
		1110
		1111	}
		1112
		1113	connector->display_info.raw_edid = (char *)edid;
		1114	goto end;
		1115
		1116	clean_up:
		1117	kfree(edid);
		1118	edid = NULL;
		1119	end:
		1120	return edid;
		1121
		1122	}
		1123	EXPORT_SYMBOL(drm_get_edid);
		1124
		1125	#define HDMI_IDENTIFIER 0x000C03
		1126	#define VENDOR_BLOCK 0x03
		1127	/**
		1128	* drm_detect_hdmi_monitor - detect whether monitor is hdmi.
		1129	* @edid: monitor EDID information
		1130	*
		1131	* Parse the CEA extension according to CEA-861-B.
		1132	* Return true if HDMI, false if not or unknown.
		1133	*/
		1134	bool drm_detect_hdmi_monitor(struct edid *edid)
		1135	{
		1136	char *edid_ext = NULL;
		1137	int i, hdmi_id, edid_ext_num;
		1138	int start_offset, end_offset;
		1139	bool is_hdmi = false;
		1140
		1141	/* No EDID or EDID extensions */
		1142	if (edid == NULL \|\| edid->extensions == 0)
		1143	goto end;
		1144
		1145	/* Chose real EDID extension number */
		1146	edid_ext_num = edid->extensions > MAX_EDID_EXT_NUM ?
		1147	MAX_EDID_EXT_NUM : edid->extensions;
		1148
		1149	/* Find CEA extension */
		1150	for (i = 0; i < edid_ext_num; i++) {
		1151	edid_ext = (char )edid + EDID_LENGTH (i + 1);
		1152	/* This block is CEA extension */
		1153	if (edid_ext[0] == 0x02)
		1154	break;
		1155	}
		1156
		1157	if (i == edid_ext_num)
		1158	goto end;
		1159
		1160	/* Data block offset in CEA extension block */
		1161	start_offset = 4;
		1162	end_offset = edid_ext[2];
		1163
		1164	/*
		1165	* Because HDMI identifier is in Vendor Specific Block,
		1166	* search it from all data blocks of CEA extension.
		1167	*/
		1168	for (i = start_offset; i < end_offset;
		1169	/* Increased by data block len */
		1170	i += ((edid_ext[i] & 0x1f) + 1)) {
		1171	/* Find vendor specific block */
		1172	if ((edid_ext[i] >> 5) == VENDOR_BLOCK) {
		1173	hdmi_id = edid_ext[i + 1] \| (edid_ext[i + 2] << 8) \|
		1174	edid_ext[i + 3] << 16;
		1175	/* Find HDMI identifier */
		1176	if (hdmi_id == HDMI_IDENTIFIER)
		1177	is_hdmi = true;
		1178	break;
		1179	}
		1180	}
		1181
		1182	end:
		1183	return is_hdmi;
		1184	}
		1185	EXPORT_SYMBOL(drm_detect_hdmi_monitor);
		1186
		1187	/**
		1188	* drm_add_edid_modes - add modes from EDID data, if available
		1189	* @connector: connector we're probing
		1190	* @edid: edid data
		1191	*
		1192	* Add the specified modes to the connector's mode list.
		1193	*
		1194	* Return number of modes added or 0 if we couldn't find any.
		1195	*/
		1196	int drm_add_edid_modes(struct drm_connector connector, struct edid edid)
		1197	{
		1198	int num_modes = 0;
		1199	u32 quirks;
		1200
		1201	if (edid == NULL) {
		1202	return 0;
		1203	}
		1204	if (!edid_is_valid(edid)) {
		1205	// dev_warn(&connector->dev->pdev->dev, "%s: EDID invalid.\n",
		1206	// drm_get_connector_name(connector));
		1207	return 0;
		1208	}
		1209
		1210	quirks = edid_get_quirks(edid);
		1211
		1212	num_modes += add_established_modes(connector, edid);
		1213	num_modes += add_standard_modes(connector, edid);
		1214	num_modes += add_detailed_info(connector, edid, quirks);
1179	serge	1215	num_modes += add_detailed_info_eedid(connector, edid, quirks);
1123	serge	1216
		1217	if (quirks & (EDID_QUIRK_PREFER_LARGE_60 \| EDID_QUIRK_PREFER_LARGE_75))
		1218	edid_fixup_preferred(connector, quirks);
		1219
		1220	connector->display_info.serration_vsync = (edid->input & DRM_EDID_INPUT_SERRATION_VSYNC) ? 1 : 0;
		1221	connector->display_info.sync_on_green = (edid->input & DRM_EDID_INPUT_SYNC_ON_GREEN) ? 1 : 0;
		1222	connector->display_info.composite_sync = (edid->input & DRM_EDID_INPUT_COMPOSITE_SYNC) ? 1 : 0;
		1223	connector->display_info.separate_syncs = (edid->input & DRM_EDID_INPUT_SEPARATE_SYNCS) ? 1 : 0;
		1224	connector->display_info.blank_to_black = (edid->input & DRM_EDID_INPUT_BLANK_TO_BLACK) ? 1 : 0;
		1225	connector->display_info.video_level = (edid->input & DRM_EDID_INPUT_VIDEO_LEVEL) >> 5;
		1226	connector->display_info.digital = (edid->input & DRM_EDID_INPUT_DIGITAL) ? 1 : 0;
		1227	connector->display_info.width_mm = edid->width_cm * 10;
		1228	connector->display_info.height_mm = edid->height_cm * 10;
		1229	connector->display_info.gamma = edid->gamma;
		1230	connector->display_info.gtf_supported = (edid->features & DRM_EDID_FEATURE_DEFAULT_GTF) ? 1 : 0;
		1231	connector->display_info.standard_color = (edid->features & DRM_EDID_FEATURE_STANDARD_COLOR) ? 1 : 0;
		1232	connector->display_info.display_type = (edid->features & DRM_EDID_FEATURE_DISPLAY_TYPE) >> 3;
		1233	connector->display_info.active_off_supported = (edid->features & DRM_EDID_FEATURE_PM_ACTIVE_OFF) ? 1 : 0;
		1234	connector->display_info.suspend_supported = (edid->features & DRM_EDID_FEATURE_PM_SUSPEND) ? 1 : 0;
		1235	connector->display_info.standby_supported = (edid->features & DRM_EDID_FEATURE_PM_STANDBY) ? 1 : 0;
		1236	connector->display_info.gamma = edid->gamma;
		1237
		1238	return num_modes;
		1239	}
		1240	EXPORT_SYMBOL(drm_add_edid_modes);
1179	serge	1241
		1242	/**
		1243	* drm_add_modes_noedid - add modes for the connectors without EDID
		1244	* @connector: connector we're probing
		1245	* @hdisplay: the horizontal display limit
		1246	* @vdisplay: the vertical display limit
		1247	*
		1248	* Add the specified modes to the connector's mode list. Only when the
		1249	* hdisplay/vdisplay is not beyond the given limit, it will be added.
		1250	*
		1251	* Return number of modes added or 0 if we couldn't find any.
		1252	*/
		1253	int drm_add_modes_noedid(struct drm_connector *connector,
		1254	int hdisplay, int vdisplay)
		1255	{
		1256	int i, count, num_modes = 0;
		1257	struct drm_display_mode mode, ptr;
		1258	struct drm_device *dev = connector->dev;
		1259
		1260	count = sizeof(drm_dmt_modes) / sizeof(struct drm_display_mode);
		1261	if (hdisplay < 0)
		1262	hdisplay = 0;
		1263	if (vdisplay < 0)
		1264	vdisplay = 0;
		1265
		1266	for (i = 0; i < count; i++) {
		1267	ptr = &drm_dmt_modes[i];
		1268	if (hdisplay && vdisplay) {
		1269	/*
		1270	* Only when two are valid, they will be used to check
		1271	* whether the mode should be added to the mode list of
		1272	* the connector.
		1273	*/
		1274	if (ptr->hdisplay > hdisplay \|\|
		1275	ptr->vdisplay > vdisplay)
		1276	continue;
		1277	}
		1278	mode = drm_mode_duplicate(dev, ptr);
		1279	if (mode) {
		1280	drm_mode_probed_add(connector, mode);
		1281	num_modes++;
		1282	}
		1283	}
		1284	return num_modes;
		1285	}
		1286	EXPORT_SYMBOL(drm_add_modes_noedid);

Subversion Repositories Kolibri OS

(root)/drivers/video/drm/drm_edid.c @ 1233 – Rev 1221