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1123 serge 1 
/*
2 
 * Copyright (c) 2006 Luc Verhaegen (quirks list)
3 
 * Copyright (c) 2007-2008 Intel Corporation
4 
 *   Jesse Barnes
1963 serge 5 
 * Copyright 2010 Red Hat, Inc.
1123 serge 6 
 *
7 
 * DDC probing routines (drm_ddc_read & drm_do_probe_ddc_edid) originally from
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 * FB layer.
9 
 *   Copyright (C) 2006 Dennis Munsie
10 
 *
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 * Permission is hereby granted, free of charge, to any person obtaining a
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 * copy of this software and associated documentation files (the "Software"),
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 * to deal in the Software without restriction, including without limitation
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 * the rights to use, copy, modify, merge, publish, distribute, sub license,
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 * and/or sell copies of the Software, and to permit persons to whom the
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 * Software is furnished to do so, subject to the following conditions:
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 *
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 * The above copyright notice and this permission notice (including the
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 * next paragraph) shall be included in all copies or substantial portions
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 * of the Software.
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 *
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 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
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 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
28 
 * DEALINGS IN THE SOFTWARE.
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 */
1221 serge 30 
#include
1963 serge 31 
#include
3480 Serge 32 
#include
1125 serge 33 
#include
3031 serge 34 
#include
35 
#include
36 
#include
1123 serge 37 
 
1963 serge 38 
#define version_greater(edid, maj, min) \
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	(((edid)->version > (maj)) || \
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	 ((edid)->version == (maj) && (edid)->revision > (min)))
1123 serge 41 
 
1963 serge 42 
#define EDID_EST_TIMINGS 16
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#define EDID_STD_TIMINGS 8
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#define EDID_DETAILED_TIMINGS 4
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1123 serge 46 
/*
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 * EDID blocks out in the wild have a variety of bugs, try to collect
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 * them here (note that userspace may work around broken monitors first,
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 * but fixes should make their way here so that the kernel "just works"
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 * on as many displays as possible).
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 */
52 
 
53 
/* First detailed mode wrong, use largest 60Hz mode */
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#define EDID_QUIRK_PREFER_LARGE_60		(1 << 0)
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/* Reported 135MHz pixel clock is too high, needs adjustment */
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#define EDID_QUIRK_135_CLOCK_TOO_HIGH		(1 << 1)
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/* Prefer the largest mode at 75 Hz */
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#define EDID_QUIRK_PREFER_LARGE_75		(1 << 2)
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/* Detail timing is in cm not mm */
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#define EDID_QUIRK_DETAILED_IN_CM		(1 << 3)
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/* Detailed timing descriptors have bogus size values, so just take the
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 * maximum size and use that.
63 
 */
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#define EDID_QUIRK_DETAILED_USE_MAXIMUM_SIZE	(1 << 4)
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/* Monitor forgot to set the first detailed is preferred bit. */
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#define EDID_QUIRK_FIRST_DETAILED_PREFERRED	(1 << 5)
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/* use +hsync +vsync for detailed mode */
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#define EDID_QUIRK_DETAILED_SYNC_PP		(1 << 6)
3031 serge 69 
/* Force reduced-blanking timings for detailed modes */
70 
#define EDID_QUIRK_FORCE_REDUCED_BLANKING	(1 << 7)
1123 serge 71 
 
1963 serge 72 
struct detailed_mode_closure {
73 
	struct drm_connector *connector;
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	struct edid *edid;
75 
	bool preferred;
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	u32 quirks;
77 
	int modes;
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};
1430 serge 79 
 
1179 serge 80 
#define LEVEL_DMT	0
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#define LEVEL_GTF	1
1963 serge 82 
#define LEVEL_GTF2	2
83 
#define LEVEL_CVT	3
1179 serge 84 
 
1123 serge 85 
static struct edid_quirk {
3031 serge 86 
	char vendor[4];
1123 serge 87 
	int product_id;
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	u32 quirks;
89 
} edid_quirk_list[] = {
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	/* Acer AL1706 */
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	{ "ACR", 44358, EDID_QUIRK_PREFER_LARGE_60 },
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	/* Acer F51 */
93 
	{ "API", 0x7602, EDID_QUIRK_PREFER_LARGE_60 },
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	/* Unknown Acer */
95 
	{ "ACR", 2423, EDID_QUIRK_FIRST_DETAILED_PREFERRED },
96 
 
97 
	/* Belinea 10 15 55 */
98 
	{ "MAX", 1516, EDID_QUIRK_PREFER_LARGE_60 },
99 
	{ "MAX", 0x77e, EDID_QUIRK_PREFER_LARGE_60 },
100 
 
101 
	/* Envision Peripherals, Inc. EN-7100e */
102 
	{ "EPI", 59264, EDID_QUIRK_135_CLOCK_TOO_HIGH },
1963 serge 103 
	/* Envision EN2028 */
104 
	{ "EPI", 8232, EDID_QUIRK_PREFER_LARGE_60 },
1123 serge 105 
 
106 
	/* Funai Electronics PM36B */
107 
	{ "FCM", 13600, EDID_QUIRK_PREFER_LARGE_75 |
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	  EDID_QUIRK_DETAILED_IN_CM },
109 
 
110 
	/* LG Philips LCD LP154W01-A5 */
111 
	{ "LPL", 0, EDID_QUIRK_DETAILED_USE_MAXIMUM_SIZE },
112 
	{ "LPL", 0x2a00, EDID_QUIRK_DETAILED_USE_MAXIMUM_SIZE },
113 
 
114 
	/* Philips 107p5 CRT */
115 
	{ "PHL", 57364, EDID_QUIRK_FIRST_DETAILED_PREFERRED },
116 
 
117 
	/* Proview AY765C */
118 
	{ "PTS", 765, EDID_QUIRK_FIRST_DETAILED_PREFERRED },
119 
 
120 
	/* Samsung SyncMaster 205BW.  Note: irony */
121 
	{ "SAM", 541, EDID_QUIRK_DETAILED_SYNC_PP },
122 
	/* Samsung SyncMaster 22[5-6]BW */
123 
	{ "SAM", 596, EDID_QUIRK_PREFER_LARGE_60 },
124 
	{ "SAM", 638, EDID_QUIRK_PREFER_LARGE_60 },
3031 serge 125 
 
126 
	/* ViewSonic VA2026w */
127 
	{ "VSC", 5020, EDID_QUIRK_FORCE_REDUCED_BLANKING },
1123 serge 128 
};
129 
 
3480 Serge 130 
/*
131 
 * Autogenerated from the DMT spec.
132 
 * This table is copied from xfree86/modes/xf86EdidModes.c.
133 
 */
134 
static const struct drm_display_mode drm_dmt_modes[] = {
135 
	/* 640x350@85Hz */
136 
	{ DRM_MODE("640x350", DRM_MODE_TYPE_DRIVER, 31500, 640, 672,
137 
		   736, 832, 0, 350, 382, 385, 445, 0,
138 
		   DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC) },
139 
	/* 640x400@85Hz */
140 
	{ DRM_MODE("640x400", DRM_MODE_TYPE_DRIVER, 31500, 640, 672,
141 
		   736, 832, 0, 400, 401, 404, 445, 0,
142 
		   DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
143 
	/* 720x400@85Hz */
144 
	{ DRM_MODE("720x400", DRM_MODE_TYPE_DRIVER, 35500, 720, 756,
145 
		   828, 936, 0, 400, 401, 404, 446, 0,
146 
		   DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
147 
	/* 640x480@60Hz */
148 
	{ DRM_MODE("640x480", DRM_MODE_TYPE_DRIVER, 25175, 640, 656,
149 
		   752, 800, 0, 480, 489, 492, 525, 0,
150 
		   DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC) },
151 
	/* 640x480@72Hz */
152 
	{ DRM_MODE("640x480", DRM_MODE_TYPE_DRIVER, 31500, 640, 664,
153 
		   704, 832, 0, 480, 489, 492, 520, 0,
154 
		   DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC) },
155 
	/* 640x480@75Hz */
156 
	{ DRM_MODE("640x480", DRM_MODE_TYPE_DRIVER, 31500, 640, 656,
157 
		   720, 840, 0, 480, 481, 484, 500, 0,
158 
		   DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC) },
159 
	/* 640x480@85Hz */
160 
	{ DRM_MODE("640x480", DRM_MODE_TYPE_DRIVER, 36000, 640, 696,
161 
		   752, 832, 0, 480, 481, 484, 509, 0,
162 
		   DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC) },
163 
	/* 800x600@56Hz */
164 
	{ DRM_MODE("800x600", DRM_MODE_TYPE_DRIVER, 36000, 800, 824,
165 
		   896, 1024, 0, 600, 601, 603, 625, 0,
166 
		   DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
167 
	/* 800x600@60Hz */
168 
	{ DRM_MODE("800x600", DRM_MODE_TYPE_DRIVER, 40000, 800, 840,
169 
		   968, 1056, 0, 600, 601, 605, 628, 0,
170 
		   DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
171 
	/* 800x600@72Hz */
172 
	{ DRM_MODE("800x600", DRM_MODE_TYPE_DRIVER, 50000, 800, 856,
173 
		   976, 1040, 0, 600, 637, 643, 666, 0,
174 
		   DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
175 
	/* 800x600@75Hz */
176 
	{ DRM_MODE("800x600", DRM_MODE_TYPE_DRIVER, 49500, 800, 816,
177 
		   896, 1056, 0, 600, 601, 604, 625, 0,
178 
		   DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
179 
	/* 800x600@85Hz */
180 
	{ DRM_MODE("800x600", DRM_MODE_TYPE_DRIVER, 56250, 800, 832,
181 
		   896, 1048, 0, 600, 601, 604, 631, 0,
182 
		   DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
183 
	/* 800x600@120Hz RB */
184 
	{ DRM_MODE("800x600", DRM_MODE_TYPE_DRIVER, 73250, 800, 848,
185 
		   880, 960, 0, 600, 603, 607, 636, 0,
186 
		   DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC) },
187 
	/* 848x480@60Hz */
188 
	{ DRM_MODE("848x480", DRM_MODE_TYPE_DRIVER, 33750, 848, 864,
189 
		   976, 1088, 0, 480, 486, 494, 517, 0,
190 
		   DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
191 
	/* 1024x768@43Hz, interlace */
192 
	{ DRM_MODE("1024x768i", DRM_MODE_TYPE_DRIVER, 44900, 1024, 1032,
193 
		   1208, 1264, 0, 768, 768, 772, 817, 0,
194 
		   DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC |
195 
			DRM_MODE_FLAG_INTERLACE) },
196 
	/* 1024x768@60Hz */
197 
	{ DRM_MODE("1024x768", DRM_MODE_TYPE_DRIVER, 65000, 1024, 1048,
198 
		   1184, 1344, 0, 768, 771, 777, 806, 0,
199 
		   DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC) },
200 
	/* 1024x768@70Hz */
201 
	{ DRM_MODE("1024x768", DRM_MODE_TYPE_DRIVER, 75000, 1024, 1048,
202 
		   1184, 1328, 0, 768, 771, 777, 806, 0,
203 
		   DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC) },
204 
	/* 1024x768@75Hz */
205 
	{ DRM_MODE("1024x768", DRM_MODE_TYPE_DRIVER, 78750, 1024, 1040,
206 
		   1136, 1312, 0, 768, 769, 772, 800, 0,
207 
		   DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
208 
	/* 1024x768@85Hz */
209 
	{ DRM_MODE("1024x768", DRM_MODE_TYPE_DRIVER, 94500, 1024, 1072,
210 
		   1168, 1376, 0, 768, 769, 772, 808, 0,
211 
		   DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
212 
	/* 1024x768@120Hz RB */
213 
	{ DRM_MODE("1024x768", DRM_MODE_TYPE_DRIVER, 115500, 1024, 1072,
214 
		   1104, 1184, 0, 768, 771, 775, 813, 0,
215 
		   DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC) },
216 
	/* 1152x864@75Hz */
217 
	{ DRM_MODE("1152x864", DRM_MODE_TYPE_DRIVER, 108000, 1152, 1216,
218 
		   1344, 1600, 0, 864, 865, 868, 900, 0,
219 
		   DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
220 
	/* 1280x768@60Hz RB */
221 
	{ DRM_MODE("1280x768", DRM_MODE_TYPE_DRIVER, 68250, 1280, 1328,
222 
		   1360, 1440, 0, 768, 771, 778, 790, 0,
223 
		   DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC) },
224 
	/* 1280x768@60Hz */
225 
	{ DRM_MODE("1280x768", DRM_MODE_TYPE_DRIVER, 79500, 1280, 1344,
226 
		   1472, 1664, 0, 768, 771, 778, 798, 0,
227 
		   DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
228 
	/* 1280x768@75Hz */
229 
	{ DRM_MODE("1280x768", DRM_MODE_TYPE_DRIVER, 102250, 1280, 1360,
230 
		   1488, 1696, 0, 768, 771, 778, 805, 0,
231 
		   DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC) },
232 
	/* 1280x768@85Hz */
233 
	{ DRM_MODE("1280x768", DRM_MODE_TYPE_DRIVER, 117500, 1280, 1360,
234 
		   1496, 1712, 0, 768, 771, 778, 809, 0,
235 
		   DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
236 
	/* 1280x768@120Hz RB */
237 
	{ DRM_MODE("1280x768", DRM_MODE_TYPE_DRIVER, 140250, 1280, 1328,