admin/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2025-12-07 20:06:24 +00:00
Code Issues Packages Projects Releases Wiki Activity

drm/renesas/rcar-du: Compute dumb-buffer sizes with drm_mode_size_dumb()

Browse Source 
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>
Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Cc: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Reviewed-by: Tomi Valkeinen <tomi.valkeinen+renesas@ideasonboard.com>
Link: https://lore.kernel.org/r/20250821081918.79786-18-tzimmermann@suse.de
This commit is contained in:
Thomas Zimmermann
2025-08-21 10:17:24 +02:00
parent 9ea885b3a6
commit 115d1f3466
1 changed files with 5 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

7
drivers/gpu/drm/renesas/rcar-du/rcar_du_kms.c
View File

@@ -11,6 +11,7 @@
#include <drm/drm_atomic_helper.h>
#include <drm/drm_crtc.h>
#include <drm/drm_device.h>
#include <drm/drm_dumb_buffers.h>
#include <drm/drm_framebuffer.h>
#include <drm/drm_gem_dma_helper.h>
#include <drm/drm_gem_framebuffer_helper.h>
@@ -407,8 +408,8 @@ int rcar_du_dumb_create(struct drm_file *file, struct drm_device *dev,
struct drm_mode_create_dumb *args)
{
struct rcar_du_device *rcdu = to_rcar_du_device(dev);
unsigned int min_pitch = DIV_ROUND_UP(args->width * args->bpp, 8);
unsigned int align;
int ret;
/*
* The R8A7779 DU requires a 16 pixels pitch alignment as documented,
@@ -419,7 +420,9 @@ int rcar_du_dumb_create(struct drm_file *file, struct drm_device *dev,
else
align = 16 * args->bpp / 8;
args->pitch = roundup(min_pitch, align);
ret = drm_mode_size_dumb(dev, args, align, 0);
if (ret)
return ret;
return drm_gem_dma_dumb_create_internal(file, dev, args);
}