[PATCH v3 07/25] drm/exynos: Compute dumb-buffer sizes with drm_mode_size_dumb()

Thomas Zimmermann
2025-02-18T15:41:06Z

Call drm_mode_size_dumb() to compute dumb-buffer scanline pitch and
buffer size. No alignment required.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Cc: Inki Dae <inki.dae@samsung.com>
Cc: Seung-Woo Kim <sw0312.kim@samsung.com>
Cc: Kyungmin Park <kyungmin.park@samsung.com>
Cc: Krzysztof Kozlowski <krzk@kernel.org>
Cc: Alim Akhtar <alim.akhtar@samsung.com>
---
drivers/gpu/drm/exynos/exynos_drm_gem.c | 8 +++++---
1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/exynos/exynos_drm_gem.c b/drivers/gpu/drm/exynos/exynos_drm_gem.c
index 4787fee4696f..ffa1c02b4b1e 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_gem.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_gem.c
@@ -11,6 +11,7 @@
#include <linux/shmem_fs.h>
#include <linux/module.h>

+#include <drm/drm_dumb_buffers.h>
#include <drm/drm_prime.h>
#include <drm/drm_vma_manager.h>
#include <drm/exynos_drm.h>
@@ -330,15 +331,16 @@ int exynos_drm_gem_dumb_create(struct drm_file *file_priv,
unsigned int flags;
int ret;

+ ret = drm_mode_size_dumb(dev, args, 0, 0);
+ if (ret)
+ return ret;
+
/*
* allocate memory to be used for framebuffer.
* - this callback would be called by user application
* with DRM_IOCTL_MODE_CREATE_DUMB command.
*/

- args->pitch = args->width * ((args->bpp + 7) / 8);
- args->size = args->pitch * args->height;
-
if (is_drm_iommu_supported(dev))
flags = EXYNOS_BO_NONCONTIG | EXYNOS_BO_WC;
else
--
2.48.1