[PATCH v6 19/25] drm/rockchip: Compute dumb-buffer sizes with drm_mode_size_dumb()
From: Thomas Zimmermann <tzimmermann@suse.de>
Date: 2025-08-21 08:23:28
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:
arm/rockchip soc support, drm drivers, drm drivers and misc gpu patches, drm drivers for rockchip, the rest · Maintainers:
Heiko Stuebner, David Airlie, Simona Vetter, Maarten Lankhorst, Maxime Ripard, Thomas Zimmermann, Sandy Huang, Heiko Stübner, Andy Yan, Linus Torvalds
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> --- drivers/gpu/drm/rockchip/rockchip_drm_gem.c | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-)
diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_gem.c b/drivers/gpu/drm/rockchip/rockchip_drm_gem.c
index 6330b883efc3..3bd06202e232 100644
--- a/drivers/gpu/drm/rockchip/rockchip_drm_gem.c
+++ b/drivers/gpu/drm/rockchip/rockchip_drm_gem.c@@ -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);
--
2.50.1