Call drmmode_set_desired_modes from a WindowExposures hook

This is the earliest opportunity where the root window contents are
guaranteed to be initialized, and prevents drmmode_set_mode_major from
getting called before drmmode_set_desired_modes via RADEONUnblank ->
drmmode_crtc_dpms. Also, in contrast to the BlockHandler hook, this is
called when running Xorg with -pogo.

Fixes intermittently showing garbage on server startup or after server
reset.

As a bonus, this avoids trouble due to higher layers (e.g. the tigervnc
Xorg module) calling RADEONBlockHandler_oneshot repeatedly even after
we set pScreen->BlockHandler = RADEONBlockHandler_KMS.

v2:
* Drop spaces between XORG_VERSION_NUMERIC arguments
* Call radeon_bo_wait after radeon_cs_flush_indirect

Bugzilla: https://bugs.freedesktop.org/99457
Reviewed-by: Alex Deucher <alexander.deucher@amd.com> (v1)

1 files changed, 1 insertions, 0 deletions

diff --git a/src/radeon.h b/src/radeon.h
index bfff232c..815c12a1 100644
--- a/src/radeon.h
+++ b/src/radeon.h
@@ -523,6 +523,7 @@ typedef struct {
 
     CreateScreenResourcesProcPtr CreateScreenResources;
     CreateWindowProcPtr CreateWindow;
+    WindowExposuresProcPtr WindowExposures;
 
     Bool              IsSecondary;