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authorThomas Zimmermann <tzimmermann@suse.de>2025-08-21 10:17:32 +0200
committerThomas Zimmermann <tzimmermann@suse.de>2025-09-29 17:50:54 +0200
commitd861831836126cfbb6550923a2f480d537a2738e (patch)
tree45b1b2b0d0a80ba41b4c76abeaa29a80890f8cda
parenta8f81ee99fc3b30342f1b822c7a1a5acce02dfed (diff)
drm/xlnx: 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> Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Cc: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com> Link: https://lore.kernel.org/r/20250821081918.79786-26-tzimmermann@suse.de
-rw-r--r--drivers/gpu/drm/xlnx/zynqmp_kms.c7
1 files changed, 5 insertions, 2 deletions
diff --git a/drivers/gpu/drm/xlnx/zynqmp_kms.c b/drivers/gpu/drm/xlnx/zynqmp_kms.c
index 2bee0a2275ed..02f3a7d78cf8 100644
--- a/drivers/gpu/drm/xlnx/zynqmp_kms.c
+++ b/drivers/gpu/drm/xlnx/zynqmp_kms.c
@@ -19,6 +19,7 @@
#include <drm/drm_crtc.h>
#include <drm/drm_device.h>
#include <drm/drm_drv.h>
+#include <drm/drm_dumb_buffers.h>
#include <drm/drm_encoder.h>
#include <drm/drm_fbdev_dma.h>
#include <drm/drm_fourcc.h>
@@ -363,10 +364,12 @@ static int zynqmp_dpsub_dumb_create(struct drm_file *file_priv,
struct drm_mode_create_dumb *args)
{
struct zynqmp_dpsub *dpsub = to_zynqmp_dpsub(drm);
- unsigned int pitch = DIV_ROUND_UP(args->width * args->bpp, 8);
+ int ret;
/* Enforce the alignment constraints of the DMA engine. */
- args->pitch = ALIGN(pitch, dpsub->dma_align);
+ ret = drm_mode_size_dumb(drm, args, dpsub->dma_align, 0);
+ if (ret)
+ return ret;
return drm_gem_dma_dumb_create_internal(file_priv, drm, args);
}