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ACRN:DM:VGPU: Add more standard modes for EDID block

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EDID uses the bytes of 38-53 to support up to 8 standard modes. And it is
based on the mechanism: Byte 0 defines the xres / 8 - 31 and byte 1 defines
the aspect_ratio/refresh_rate.
But now it uses the incorrect logic in course of adding standard mode, which
causes that no standard mode is added in EDID block.

Fix it and add another two standard modes so that the guest_vm can parse
more modes from EDID.

Tracked-On: #7376

Acked-by: Wang Yu <yu1.wang@intel.com>
Signed-off-by: Zhao Yakui <yakui.zhao@intel.com>
This commit is contained in:
Zhao Yakui 2022-05-06 11:26:52 +08:00 committed by acrnsi-robot
parent 4972d29c2d
commit 3921812885
1 changed files with 8 additions and 5 deletions
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13
devicemodel/hw/vdisplay_sdl.c
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@ -105,6 +105,7 @@ static const struct timing_entry {
uint32_t byte_t3;// byte idx in the Established Timings III Descriptor
uint32_t bit; // bit idx
uint8_t hz; // frequency
bool is_std; // the flag of standard mode
} timings[] = {
/* Established Timings I & II (all @ 60Hz) */
{ .hpixel = 1024, .vpixel = 768, .byte = 36, .bit = 3, .hz = 60},
@ -112,8 +113,10 @@ static const struct timing_entry {
{ .hpixel = 640, .vpixel = 480, .byte = 35, .bit = 5, .hz = 60 },
/* Standard Timings */
{ .hpixel = 1920, .vpixel = 1080, .hz = 60 },
{ .hpixel = 1280, .vpixel = 720, .hz = 60 },
{ .hpixel = 1920, .vpixel = 1080, .hz = 60, .is_std = true },
{ .hpixel = 1280, .vpixel = 720, .hz = 60, .is_std = true },
{ .hpixel = 1440, .vpixel = 900, .hz = 60, .is_std = true },
{ .hpixel = 1680, .vpixel = 1050, .hz = 60, .is_std = true },
};
typedef struct frame_param{
@ -269,7 +272,7 @@ vdpy_edid_set_timing(uint8_t *addr, const base_param *b_param, TIMING_MODE mode)
return;
}
case STDT: // Standard Timings
if(stdcnt < 8 && (timing->hpixel == b_param->h_pixel)) {
if(stdcnt < 8 && timing->is_std) {
hpixel = (timing->hpixel >> 3) - 31;
if (timing->hpixel == 0 ||
timing->vpixel == 0) {
@ -304,9 +307,9 @@ vdpy_edid_set_timing(uint8_t *addr, const base_param *b_param, TIMING_MODE mode)
}
break;
} else {
return;
continue;
}
break;
default:
return;
}