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authorAlex Deucher <alexander.deucher@amd.com>2015-04-19 19:01:00 +0300
committerAlex Deucher <alexander.deucher@amd.com>2015-04-27 16:54:57 +0300
commit7fe04d6fa824ccea704535a597dc417c8687f990 (patch)
tree33471f124a0fc2191759b7cd6f7ac716c432c4a6 /drivers/gpu
parent38aef1549b18539eaecd804383a6ccb6588a9ce1 (diff)
downloadlinux-7fe04d6fa824ccea704535a597dc417c8687f990.tar.xz
drm/radeon: adjust pll when audio is not enabled
Fixes display problems with some monitors when audio is not enabled. Bugs: https://bugs.freedesktop.org/show_bug.cgi?id=89505 https://bugzilla.kernel.org/show_bug.cgi?id=94171 Plus several reports on IRC. Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Cc: stable@vger.kernel.org
Diffstat (limited to 'drivers/gpu')
-rw-r--r--drivers/gpu/drm/radeon/atombios_crtc.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/gpu/drm/radeon/atombios_crtc.c b/drivers/gpu/drm/radeon/atombios_crtc.c
index dac78ad24b31..42b2ea3fdcf3 100644
--- a/drivers/gpu/drm/radeon/atombios_crtc.c
+++ b/drivers/gpu/drm/radeon/atombios_crtc.c
@@ -580,6 +580,9 @@ static u32 atombios_adjust_pll(struct drm_crtc *crtc,
else
radeon_crtc->pll_flags |= RADEON_PLL_PREFER_LOW_REF_DIV;
+ /* if there is no audio, set MINM_OVER_MAXP */
+ if (!drm_detect_monitor_audio(radeon_connector_edid(connector)))
+ radeon_crtc->pll_flags |= RADEON_PLL_PREFER_MINM_OVER_MAXP;
if (rdev->family < CHIP_RV770)
radeon_crtc->pll_flags |= RADEON_PLL_PREFER_MINM_OVER_MAXP;
/* use frac fb div on APUs */