[PULL,15/20] edid: Added support for 4k@60 Hz monitor

Commit Message

Gerd Hoffmann Jan. 14, 2022, 6:53 a.m. UTC

From: Satyeshwar Singh <[e-mail]>

Previously, the large modes (>1080p) that were generated by Qemu in its EDID
were all 50 Hz. If we provide them to a Guest OS and the user selects
one of these modes, then the OS by default only gets 50 FPS. This is
especially true for Windows OS. With this patch, we are now exposing a
3840x2160@60 Hz which will allow the guest OS to get 60 FPS.

Cc: Gerd Hoffmann <[e-mail]>
Signed-off-by: Satyeshwar Singh <[e-mail]>
Message-Id: <[e-mail]>
Signed-off-by: Gerd Hoffmann <[e-mail]>
---
 hw/display/edid-generate.c | 3 +++
 1 file changed, 3 insertions(+)

Patch

diff --git a/hw/display/edid-generate.c b/hw/display/edid-generate.c
index 6f5ac6a38ad8..bccf32af69ce 100644
--- a/hw/display/edid-generate.c
+++ b/hw/display/edid-generate.c
@@ -24,6 +24,9 @@  static const struct edid_mode {
     { .xres = 2048,   .yres = 1152 },
     { .xres = 1920,   .yres = 1080,   .dta =  31 },
 
+    /* dea/dta extension timings (all @ 60 Hz) */
+    { .xres = 3840,   .yres = 2160,   .dta =  97 },
+
     /* additional standard timings 3 (all @ 60Hz) */
     { .xres = 1920,   .yres = 1200,   .xtra3 = 10,   .bit = 0 },
     { .xres = 1600,   .yres = 1200,   .xtra3 =  9,   .bit = 2 },