From: wangjingyu <wangjingyu@uniontech.com>
To: alexander.deucher@amd.com
Cc: christian.koenig@amd.com, airlied@linux.ie, daniel@ffwll.ch,
amd-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org,
linux-kernel@vger.kernel.org,
wangjingyu <wangjingyu@uniontech.com>,
zhuyong <zhuyong@uniontech.com>
Subject: [PATCH] MIPS: drm/radeon: A gray screen appears when going into hibernation(S4)
Date: Thu, 4 Mar 2021 09:25:35 +0800 [thread overview]
Message-ID: <20210304012535.25475-1-wangjingyu@uniontech.com> (raw)
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
reply other threads:[~2021-03-04 1:28 UTC|newest]
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