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drm/rockchip: 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. Align the pitch to a multiple of 64.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Acked-by: Heiko Stuebner <heiko@sntech.de>
Cc: Sandy Huang <hjc@rock-chips.com>
Cc: "Heiko Stübner" <heiko@sntech.de>
Cc: Andy Yan <andy.yan@rock-chips.com>
Link: https://lore.kernel.org/r/20250821081918.79786-20-tzimmermann@suse.de
This commit is contained in:
Thomas Zimmermann 2025-08-21 10:17:26 +02:00
parent 115d1f3466
commit 42abd3e9aa
1 changed files with 6 additions and 6 deletions
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12
drivers/gpu/drm/rockchip/rockchip_drm_gem.c
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@ -9,6 +9,7 @@
#include <linux/vmalloc.h>
#include <drm/drm.h>
#include <drm/drm_dumb_buffers.h>
#include <drm/drm_fb_helper.h>
#include <drm/drm_gem.h>
#include <drm/drm_gem_dma_helper.h>
@ -403,13 +404,12 @@ int rockchip_gem_dumb_create(struct drm_file *file_priv,
struct drm_mode_create_dumb *args)
{
struct rockchip_gem_object *rk_obj;
int min_pitch = DIV_ROUND_UP(args->width * args->bpp, 8);
int ret;
/*
* align to 64 bytes since Mali requires it.
*/
args->pitch = ALIGN(min_pitch, 64);
args->size = args->pitch * args->height;
/* 64-byte alignment required by Mali */
ret = drm_mode_size_dumb(dev, args, SZ_64, 0);
if (ret)
return ret;
rk_obj = rockchip_gem_create_with_handle(file_priv, dev, args->size,
&args->handle);