* [PATCH] MIPS: drm/radeon: A gray screen appears when going into hibernation(S4)
@ 2021-03-04 1:25 wangjingyu
0 siblings, 0 replies; only message in thread
From: wangjingyu @ 2021-03-04 1:25 UTC (permalink / raw)
To: alexander.deucher
Cc: christian.koenig, airlied, daniel, amd-gfx, dri-devel,
linux-kernel, wangjingyu, zhuyong
Radeon Card:
Caicos[Radeon HD 6450/7450/8450 /R5 230 OEM]
there is no gray screen when echo 4>/sys/module/drm/parameters/debug,
so the WREG32 function after DRM_DEBUG_KMS may have wrong when going
into hibernation.the delay of msleep(50) just can fix gray screen.
Signed-off-by: wangjingyu <wangjingyu@uniontech.com>
Signed-off-by: zhuyong <zhuyong@uniontech.com>
---
drivers/gpu/drm/radeon/radeon_display.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/gpu/drm/radeon/radeon_display.c b/drivers/gpu/drm/radeon/radeon_display.c
index 652af7a134bd..1be50f949bb4 100644
--- a/drivers/gpu/drm/radeon/radeon_display.c
+++ b/drivers/gpu/drm/radeon/radeon_display.c
@@ -226,6 +226,8 @@ void radeon_crtc_load_lut(struct drm_crtc *crtc)
if (!crtc->enabled)
return;
+ sleep(50);
+
if (ASIC_IS_DCE5(rdev))
dce5_crtc_load_lut(crtc);
else if (ASIC_IS_DCE4(rdev))
--
2.11.0
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2021-03-04 1:25 [PATCH] MIPS: drm/radeon: A gray screen appears when going into hibernation(S4) wangjingyu
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