Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
drm/tegra: Compute dumb-buffer sizes with drm_mode_size_dumb()
Call drm_mode_size_dumb() to compute dumb-buffer scanline pitch and
buffer size. Align the pitch according to hardware requirements.
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Acked-by: Thierry Reding <treding@nvidia.com>
Cc: Thierry Reding <thierry.reding@gmail.com>
Cc: Mikko Perttunen <mperttunen@nvidia.com>
Link: https://lore.kernel.org/r/20250821081918.79786-21-tzimmermann@suse.de
+5
-3
+5
-3
drivers/gpu/drm/tegra/gem.c
+5
-3
drivers/gpu/drm/tegra/gem.c
···
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#include <linux/vmalloc.h>
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#include <drm/drm_drv.h>
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#include <drm/drm_dumb_buffers.h>
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#include <drm/drm_prime.h>
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#include "drm.h"
···
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int tegra_bo_dumb_create(struct drm_file *file, struct drm_device *drm,
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struct drm_mode_create_dumb *args)
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{
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unsigned int min_pitch = DIV_ROUND_UP(args->width * args->bpp, 8);
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struct tegra_drm *tegra = drm->dev_private;
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struct tegra_bo *bo;
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int ret;
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args->pitch = round_up(min_pitch, tegra->pitch_align);
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args->size = args->pitch * args->height;
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ret = drm_mode_size_dumb(drm, args, tegra->pitch_align, 0);
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if (ret)
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return ret;
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bo = tegra_bo_create_with_handle(file, drm, args->size, 0,
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&args->handle);