This patch forces all GEM buffers to have pitch aligned at least to 8
pixels. This is a common requirement for various Exynos IPP blocks,
which otherwise won't be able to operate on buffers of random size.
Signed-off-by: Marek Szyprowski <m.szyprowski at samsung.com>
---
drivers/gpu/drm/exynos/exynos_drm_drv.h | 2 ++
drivers/gpu/drm/exynos/exynos_drm_gem.c | 2 +-
2 files changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/exynos/exynos_drm_drv.h
b/drivers/gpu/drm/exynos/exynos_drm_drv.h
index 9ed52b04c0ba..0890e6709f10 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_drv.h
+++ b/drivers/gpu/drm/exynos/exynos_drm_drv.h
@@ -24,6 +24,8 @@
#define DEFAULT_WIN 0
+#define EXYNOS_DRM_PITCH_ALIGN 8
+
#define EXYNOS_BAD_PIXEL_FORMAT 0xffffffffu
#define to_exynos_crtc(x) container_of(x, struct exynos_drm_crtc, base)
diff --git a/drivers/gpu/drm/exynos/exynos_drm_gem.c
b/drivers/gpu/drm/exynos/exynos_drm_gem.c
index 252eb301470c..b5db6e6cc043 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_gem.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_gem.c
@@ -417,7 +417,7 @@ int exynos_drm_gem_dumb_create(struct drm_file *file_priv,
* with DRM_IOCTL_MODE_CREATE_DUMB command.
*/
- args->pitch = args->width * ((args->bpp + 7) / 8);
+ args->pitch = roundup(args->width, EXYNOS_DRM_PITCH_ALIGN) *
((args->bpp + 7) / 8);
args->size = args->pitch * args->height;
if (is_drm_iommu_supported(dev))
--
1.9.2
