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| author | Alex Deucher <alexander.deucher@amd.com> | 2013-08-19 11:06:50 -0400 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2013-08-30 16:31:00 -0400 |
| commit | 0b31e02363b0db4e7931561bc6c141436e729d9f (patch) | |
| tree | aa4e98b8d2efcedb78561549b4a37e72dd08be65 /drivers/gpu/drm/radeon/evergreend.h | |
| parent | e5b9e7503eb1f4884efa3b321d3cc47806779202 (diff) | |
| download | linux-0b31e02363b0db4e7931561bc6c141436e729d9f.tar.gz linux-0b31e02363b0db4e7931561bc6c141436e729d9f.tar.xz | |
drm/radeon: update line buffer allocation for dce4.1/5
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 dce4.1/5 asics.
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/evergreend.h')
| -rw-r--r-- | drivers/gpu/drm/radeon/evergreend.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/gpu/drm/radeon/evergreend.h b/drivers/gpu/drm/radeon/evergreend.h index 430997a70acc..8768fd6a1e27 100644 --- a/drivers/gpu/drm/radeon/evergreend.h +++ b/drivers/gpu/drm/radeon/evergreend.h @@ -1160,6 +1160,10 @@ # define LATENCY_LOW_WATERMARK(x) ((x) << 0) # define LATENCY_HIGH_WATERMARK(x) ((x) << 16) +#define PIPE0_DMIF_BUFFER_CONTROL 0x0ca0 +# define DMIF_BUFFERS_ALLOCATED(x) ((x) << 0) +# define DMIF_BUFFERS_ALLOCATED_COMPLETED (1 << 4) + #define IH_RB_CNTL 0x3e00 # define IH_RB_ENABLE (1 << 0) # define IH_IB_SIZE(x) ((x) << 1) /* log2 */ |