[PATCH v5 20/25] drm/tegra: Compute dumb-buffer sizes with drm_mode_size_dumb()
From: Thomas Zimmermann <tzimmermann@suse.de>
Date: 2025-06-13 09:05:16
Also in:
dri-devel, imx, intel-xe, linux-arm-msm, linux-mediatek, linux-renesas-soc, linux-rockchip, linux-samsung-soc, linux-tegra, nouveau, xen-devel
Subsystem:
drm drivers, drm drivers for nvidia tegra, the rest · Maintainers:
David Airlie, Simona Vetter, Thierry Reding, Mikko Perttunen, Linus Torvalds
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 <redacted> Cc: Thierry Reding <redacted> Cc: Mikko Perttunen <mperttunen@nvidia.com> --- drivers/gpu/drm/tegra/gem.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-)
diff --git a/drivers/gpu/drm/tegra/gem.c b/drivers/gpu/drm/tegra/gem.c
index dbc1394f96b8..9b9dabbc8ec9 100644
--- a/drivers/gpu/drm/tegra/gem.c
+++ b/drivers/gpu/drm/tegra/gem.c@@ -16,6 +16,7 @@ #include <linux/vmalloc.h> #include <drm/drm_drv.h> +#include <drm/drm_dumb_buffers.h> #include <drm/drm_prime.h> #include "drm.h"
@@ -542,12 +543,13 @@ void tegra_bo_free_object(struct drm_gem_object *gem) int tegra_bo_dumb_create(struct drm_file *file, struct drm_device *drm, struct drm_mode_create_dumb *args) { - unsigned int min_pitch = DIV_ROUND_UP(args->width * args->bpp, 8); struct tegra_drm *tegra = drm->dev_private; struct tegra_bo *bo; + int ret; - args->pitch = round_up(min_pitch, tegra->pitch_align); - args->size = args->pitch * args->height; + ret = drm_mode_size_dumb(drm, args, tegra->pitch_align, 0); + if (ret) + return ret; bo = tegra_bo_create_with_handle(file, drm, args->size, 0, &args->handle);
--
2.49.0