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drm/i915/gvt: add more resolutions in virtual edid

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The current virtual edid can only support the resolution up
to 1024x768. Update the virtual edid so that can support more
resoltions. With this new virtual edid, resolution can
be up to 1920x1200.

V2: add detailed modeline description in edid code comments

Signed-off-by: Chuanxiao Dong <chuanxiao.dong@intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
This commit is contained in:
Chuanxiao Dong 2017-01-13 10:17:02 +08:00 committed by Zhenyu Wang
parent 18566acac1
commit 2c88313650
1 changed files with 12 additions and 7 deletions
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19
drivers/gpu/drm/i915/gvt/display.c
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@ -83,7 +83,7 @@ static int pipe_is_enabled(struct intel_vgpu *vgpu, int pipe)
return 0;
}
/* EDID with 1024x768 as its resolution */
/* EDID with 1920x1200 as its resolution */
static unsigned char virtual_dp_monitor_edid[] = {
/*Header*/
0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00,
@ -97,11 +97,16 @@ static unsigned char virtual_dp_monitor_edid[] = {
0xfc, 0x81, 0xa4, 0x55, 0x4d, 0x9d, 0x25, 0x12, 0x50, 0x54,
/* Established Timings: maximum resolution is 1024x768 */
0x21, 0x08, 0x00,
/* Standard Timings. All invalid */
0x00, 0xc0, 0x00, 0xc0, 0x00, 0x40, 0x00, 0x80, 0x00, 0x00,
0x00, 0x40, 0x00, 0x00, 0x00, 0x01,
/* 18 Byte Data Blocks 1: invalid */
0x00, 0x00, 0x80, 0xa0, 0x70, 0xb0,
/*
* Standard Timings.
* below new resolutions can be supported:
* 1920x1080, 1280x720, 1280x960, 1280x1024,
* 1440x900, 1600x1200, 1680x1050
*/
0xd1, 0xc0, 0x81, 0xc0, 0x81, 0x40, 0x81, 0x80, 0x95, 0x00,
0xa9, 0x40, 0xb3, 0x00, 0x01, 0x01,
/* 18 Byte Data Blocks 1: max resolution is 1920x1200 */
0x28, 0x3c, 0x80, 0xa0, 0x70, 0xb0,
0x23, 0x40, 0x30, 0x20, 0x36, 0x00, 0x06, 0x44, 0x21, 0x00, 0x00, 0x1a,
/* 18 Byte Data Blocks 2: invalid */
0x00, 0x00, 0x00, 0xfd, 0x00, 0x18, 0x3c, 0x18, 0x50, 0x11, 0x00, 0x0a,
@ -115,7 +120,7 @@ static unsigned char virtual_dp_monitor_edid[] = {
/* Extension Block Count */
0x00,
/* Checksum */
0xef,
0x45,
};
#define DPCD_HEADER_SIZE 0xb