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drm/exynos: Compute dumb-buffer sizes with drm_mode_size_dumb()

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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>
Acked-by: Inki Dae <inki.dae@samsung.com>
Link: https://lore.kernel.org/r/20250821081918.79786-8-tzimmermann@suse.de
This commit is contained in:
Thomas Zimmermann
2025-08-21 10:17:14 +02:00
parent 4977dcecb9
commit ecf29357b6
1 changed files with 5 additions and 3 deletions
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8
drivers/gpu/drm/exynos/exynos_drm_gem.c
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@@ -10,6 +10,7 @@
#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>
@@ -329,15 +330,16 @@ 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