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authorGerd Hoffmann <kraxel@redhat.com>2021-03-16 15:38:08 +0100
committerGerd Hoffmann <kraxel@redhat.com>2021-03-23 12:37:13 +0100
commit40c503079ffcb5394be2b407e817de6104db9cfc (patch)
tree0164bccfe9a80d715e2370170f613d0dc7d55328 /hw/display
parent181b4bbf610c9126f499e2c516fb9b2a880468b8 (diff)
edid: prefer standard timings
Windows guests using the "Basic Display Adapter" don't parse the "Established timings III" block. They also don't parse any edid extension. So prefer the "Standard Timings" block to store the display resolutions in edid_fill_modes(). Also reorder the mode list, so more exotic resolutions (specifically the ones which are not supported by vgabios) are moved down and the remaining ones have a better chance to get one of the eight slots in the "Standard Timings" block. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Message-Id: <20210316143812.2363588-6-kraxel@redhat.com>
Diffstat (limited to 'hw/display')
-rw-r--r--hw/display/edid-generate.c15
1 files changed, 8 insertions, 7 deletions
diff --git a/hw/display/edid-generate.c b/hw/display/edid-generate.c
index 1665b7cbb2..a1bea9a3aa 100644
--- a/hw/display/edid-generate.c
+++ b/hw/display/edid-generate.c
@@ -25,19 +25,20 @@ static const struct edid_mode {
{ .xres = 1920, .yres = 1080, .dta = 31 },
/* additional standard timings 3 (all @ 60Hz) */
- { .xres = 1920, .yres = 1440, .xtra3 = 11, .bit = 5 },
{ .xres = 1920, .yres = 1200, .xtra3 = 10, .bit = 0 },
- { .xres = 1856, .yres = 1392, .xtra3 = 10, .bit = 3 },
- { .xres = 1792, .yres = 1344, .xtra3 = 10, .bit = 5 },
{ .xres = 1600, .yres = 1200, .xtra3 = 9, .bit = 2 },
{ .xres = 1680, .yres = 1050, .xtra3 = 9, .bit = 5 },
- { .xres = 1440, .yres = 1050, .xtra3 = 8, .bit = 1 },
{ .xres = 1440, .yres = 900, .xtra3 = 8, .bit = 5 },
- { .xres = 1360, .yres = 768, .xtra3 = 8, .bit = 7 },
{ .xres = 1280, .yres = 1024, .xtra3 = 7, .bit = 1 },
{ .xres = 1280, .yres = 960, .xtra3 = 7, .bit = 3 },
{ .xres = 1280, .yres = 768, .xtra3 = 7, .bit = 6 },
+ { .xres = 1920, .yres = 1440, .xtra3 = 11, .bit = 5 },
+ { .xres = 1856, .yres = 1392, .xtra3 = 10, .bit = 3 },
+ { .xres = 1792, .yres = 1344, .xtra3 = 10, .bit = 5 },
+ { .xres = 1440, .yres = 1050, .xtra3 = 8, .bit = 1 },
+ { .xres = 1360, .yres = 768, .xtra3 = 8, .bit = 7 },
+
/* established timings (all @ 60Hz) */
{ .xres = 1024, .yres = 768, .byte = 36, .bit = 3 },
{ .xres = 800, .yres = 600, .byte = 35, .bit = 0 },
@@ -109,13 +110,13 @@ static void edid_fill_modes(uint8_t *edid, uint8_t *xtra3, uint8_t *dta,
if (mode->byte) {
edid[mode->byte] |= (1 << mode->bit);
- } else if (mode->xtra3 && xtra3) {
- xtra3[mode->xtra3] |= (1 << mode->bit);
} else if (std < 54) {
rc = edid_std_mode(edid + std, mode->xres, mode->yres);
if (rc == 0) {
std += 2;
}
+ } else if (mode->xtra3 && xtra3) {
+ xtra3[mode->xtra3] |= (1 << mode->bit);
}
if (dta && mode->dta) {