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| author | Maxime Ripard <maxime.ripard@free-electrons.com> | 2017-06-26 23:51:15 +0300 |
|---|---|---|
| committer | Maxime Ripard <maxime.ripard@free-electrons.com> | 2018-01-29 16:02:42 +0300 |
| commit | 65f7fa3a3fcbdb67940a58ce24516d62aaec12b7 (patch) | |
| tree | 8f3cf4a62a4c44b8731b13e5a045fb0f043f3ffe /drivers/gpu/drm/sun4i/sun4i_backend.h | |
| parent | 47a05f4a68f91c09d89d2a0231b7b8c7ebb808ca (diff) | |
| download | linux-65f7fa3a3fcbdb67940a58ce24516d62aaec12b7.tar.xz | |
drm/sun4i: backend: Check for the number of alpha planes
Due to the way the composition is done in hardware, we can only have a
single alpha-enabled plane active at a time, placed in the second (highest
priority) pipe.
Make sure of that in our atomic_check to not end up in an impossible
scenario.
Reviewed-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Link: https://patchwork.freedesktop.org/patch/msgid/7371f62a1385f2cbe3ed75dfca2e746338eb2286.1516617243.git-series.maxime.ripard@free-electrons.com
Diffstat (limited to 'drivers/gpu/drm/sun4i/sun4i_backend.h')
| -rw-r--r-- | drivers/gpu/drm/sun4i/sun4i_backend.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/gpu/drm/sun4i/sun4i_backend.h b/drivers/gpu/drm/sun4i/sun4i_backend.h index 04a4f11b87a8..52e77591186a 100644 --- a/drivers/gpu/drm/sun4i/sun4i_backend.h +++ b/drivers/gpu/drm/sun4i/sun4i_backend.h @@ -146,6 +146,8 @@ #define SUN4I_BACKEND_HWCCOLORTAB_OFF 0x4c00 #define SUN4I_BACKEND_PIPE_OFF(p) (0x5000 + (0x400 * (p))) +#define SUN4I_BACKEND_NUM_LAYERS 4 +#define SUN4I_BACKEND_NUM_ALPHA_LAYERS 1 #define SUN4I_BACKEND_NUM_FRONTEND_LAYERS 1 struct sun4i_backend { |