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drm: Add 1600x1200 (UXGA) screen resolution to the built-in EDIDs 

The 1600x1200 (UXGA) screen resolution was lacking in the set of
built-in selectable EDID screen resolutions that can be used to
repair misbehaving monitor firmware.

This patch adds the related data set and expands the documentation.

Signed-off-by: Carsten Emde <C.Emde@osadl.org>
Acked-by: Paul Menzel <paulepanter@users.sourceforge.net>
Signed-off-by: Dave Airlie <airlied@redhat.com>
wifi-calibration
Carsten Emde 2013-04-06 16:01:34 +00:00 committed by Dave Airlie
parent 96d672e0e5
commit 8091ee5c09
3 changed files with 70 additions and 7 deletions
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44
Documentation/EDID/1600x1200.S 100644
View File

@ -0,0 +1,44 @@
/*
1600x1200.S: EDID data set for standard 1600x1200 60 Hz monitor
Copyright (C) 2013 Carsten Emde <C.Emde@osadl.org>
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*/
/* EDID */
#define VERSION 1
#define REVISION 3
/* Display */
#define CLOCK 162000 /* kHz */
#define XPIX 1600
#define YPIX 1200
#define XY_RATIO XY_RATIO_4_3
#define XBLANK 560
#define YBLANK 50
#define XOFFSET 64
#define XPULSE 192
#define YOFFSET (63+1)
#define YPULSE (63+3)
#define DPI 72
#define VFREQ 60 /* Hz */
#define TIMING_NAME "Linux UXGA"
#define ESTABLISHED_TIMINGS_BITS 0x00 /* none */
#define HSYNC_POL 1
#define VSYNC_POL 1
#define CRC 0x9d
#include "edid.S"

12
Documentation/EDID/HOWTO.txt
View File

@ -18,12 +18,12 @@ CONFIG_DRM_LOAD_EDID_FIRMWARE was introduced. It allows to provide an
individually prepared or corrected EDID data set in the /lib/firmware
directory from where it is loaded via the firmware interface. The code
(see drivers/gpu/drm/drm_edid_load.c) contains built-in data sets for
commonly used screen resolutions (1024x768, 1280x1024, 1680x1050,
1920x1080) as binary blobs, but the kernel source tree does not contain
code to create these data. In order to elucidate the origin of the
built-in binary EDID blobs and to facilitate the creation of individual
data for a specific misbehaving monitor, commented sources and a
Makefile environment are given here.
commonly used screen resolutions (1024x768, 1280x1024, 1600x1200,
1680x1050, 1920x1080) as binary blobs, but the kernel source tree does
not contain code to create these data. In order to elucidate the origin
of the built-in binary EDID blobs and to facilitate the creation of
individual data for a specific misbehaving monitor, commented sources
and a Makefile environment are given here.
To create binary EDID and C source code files from the existing data
material, simply type "make".

21
drivers/gpu/drm/drm_edid_load.c
View File

@ -31,10 +31,11 @@ module_param_string(edid_firmware, edid_firmware, sizeof(edid_firmware), 0644);
MODULE_PARM_DESC(edid_firmware, "Do not probe monitor, use specified EDID blob "
"from built-in data or /lib/firmware instead. ");
#define GENERIC_EDIDS 4
#define GENERIC_EDIDS 5
static char *generic_edid_name[GENERIC_EDIDS] = {
"edid/1024x768.bin",
"edid/1280x1024.bin",
"edid/1600x1200.bin",
"edid/1680x1050.bin",
"edid/1920x1080.bin",
};
@ -79,6 +80,24 @@ static u8 generic_edid[GENERIC_EDIDS][128] = {
{
0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00,
0x31, 0xd8, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x05, 0x16, 0x01, 0x03, 0x6d, 0x37, 0x29, 0x78,
0xea, 0x5e, 0xc0, 0xa4, 0x59, 0x4a, 0x98, 0x25,
0x20, 0x50, 0x54, 0x00, 0x00, 0x00, 0xa9, 0x40,
0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x48, 0x3f,
0x40, 0x30, 0x62, 0xb0, 0x32, 0x40, 0x40, 0xc0,
0x13, 0x00, 0x2b, 0xa0, 0x21, 0x00, 0x00, 0x1e,
0x00, 0x00, 0x00, 0xff, 0x00, 0x4c, 0x69, 0x6e,
0x75, 0x78, 0x20, 0x23, 0x30, 0x0a, 0x20, 0x20,
0x20, 0x20, 0x00, 0x00, 0x00, 0xfd, 0x00, 0x3b,
0x3d, 0x4a, 0x4c, 0x11, 0x00, 0x0a, 0x20, 0x20,
0x20, 0x20, 0x20, 0x20, 0x00, 0x00, 0x00, 0xfc,
0x00, 0x4c, 0x69, 0x6e, 0x75, 0x78, 0x20, 0x55,
0x58, 0x47, 0x41, 0x0a, 0x20, 0x20, 0x00, 0x9d,
},
{
0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00,
0x31, 0xd8, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x05, 0x16, 0x01, 0x03, 0x6d, 0x2b, 0x1b, 0x78,
0xea, 0x5e, 0xc0, 0xa4, 0x59, 0x4a, 0x98, 0x25,
0x20, 0x50, 0x54, 0x00, 0x00, 0x00, 0xb3, 0x00,