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authorAlex Deucher <alexander.deucher@amd.com>2013-08-19 11:15:43 -0400
committerAlex Deucher <alexander.deucher@amd.com>2013-08-30 16:31:01 -0400
commit290d24576ccf1aa0373d2185cedfe262d0d4952a (patch)
treea813201864119a4d235568a5537658167b167c9c /drivers/gpu/drm/radeon/sid.h
parent0b31e02363b0db4e7931561bc6c141436e729d9f (diff)
downloadop-kernel-dev-290d24576ccf1aa0373d2185cedfe262d0d4952a.zip
op-kernel-dev-290d24576ccf1aa0373d2185cedfe262d0d4952a.tar.gz
drm/radeon: update line buffer allocation for dce6
We need to allocate line buffer to each display when setting up the watermarks. Failure to do so can lead to a blank screen. This fixes blank screen problems on dce6 asics. Fixes: https://bugs.freedesktop.org/show_bug.cgi?id=64850 Based on an initial fix from: Jay Cornwall <jay.cornwall@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Cc: stable@vger.kernel.org
Diffstat (limited to 'drivers/gpu/drm/radeon/sid.h')
-rw-r--r--drivers/gpu/drm/radeon/sid.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/gpu/drm/radeon/sid.h b/drivers/gpu/drm/radeon/sid.h
index 91dae16..52d2ab6 100644
--- a/drivers/gpu/drm/radeon/sid.h
+++ b/drivers/gpu/drm/radeon/sid.h
@@ -282,6 +282,10 @@
#define DMIF_ADDR_CALC 0xC00
+#define PIPE0_DMIF_BUFFER_CONTROL 0x0ca0
+# define DMIF_BUFFERS_ALLOCATED(x) ((x) << 0)
+# define DMIF_BUFFERS_ALLOCATED_COMPLETED (1 << 4)
+
#define SRBM_STATUS 0xE50
#define GRBM_RQ_PENDING (1 << 5)
#define VMC_BUSY (1 << 8)
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