diff options
Diffstat (limited to 'drivers/gpu/drm/radeon/radeon_gem.c')
| -rw-r--r-- | drivers/gpu/drm/radeon/radeon_gem.c | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/drivers/gpu/drm/radeon/radeon_gem.c b/drivers/gpu/drm/radeon/radeon_gem.c index 261fcbae88d7..bdc5af23f005 100644 --- a/drivers/gpu/drm/radeon/radeon_gem.c +++ b/drivers/gpu/drm/radeon/radeon_gem.c @@ -822,6 +822,30 @@ out: return r; } +int radeon_align_pitch(struct radeon_device *rdev, int width, int cpp, bool tiled) +{ + int aligned = width; + int align_large = (ASIC_IS_AVIVO(rdev)) || tiled; + int pitch_mask = 0; + + switch (cpp) { + case 1: + pitch_mask = align_large ? 255 : 127; + break; + case 2: + pitch_mask = align_large ? 127 : 31; + break; + case 3: + case 4: + pitch_mask = align_large ? 63 : 15; + break; + } + + aligned += pitch_mask; + aligned &= ~pitch_mask; + return aligned * cpp; +} + int radeon_mode_dumb_create(struct drm_file *file_priv, struct drm_device *dev, struct drm_mode_create_dumb *args) |