Commit ef28231b authored by Thomas Zimmermann's avatar Thomas Zimmermann
Browse files

drm/tegra: Store pointer to vmap'ed framebuffer in screen_buffer 



Tegra uses DMA-able memory, which has to be acessed with CPU ops
for system-memory. Store the framebuffer's vmap address in struct
fb_info.screen_buffer. The currently used field 'screen_base' is
for I/O memory.

Suggested-by: default avatarThierry Reding <thierry.reding@gmail.com>
Signed-off-by: default avatarThomas Zimmermann <tzimmermann@suse.de>
Cc: Thierry Reding <thierry.reding@gmail.com>
Cc: Mikko Perttunen <mperttunen@nvidia.com>
Reviewed-by: default avatarJavier Martinez Canillas <javierm@redhat.com>
Acked-by: default avatarThierry Reding <treding@nvidia.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230707083422.18691-6-tzimmermann@suse.de
parent 7a9e28ab

drivers/gpu/drm/tegra/fbdev.c

+1 −1
Original line number Diff line number Diff line
@@ -133,7 +133,7 @@ static int tegra_fbdev_probe(struct drm_fb_helper *helper, 
	}



	info->flags |= FBINFO_VIRTFB;

	info->screen_base = (void __iomem *)bo->vaddr + offset;

	info->screen_buffer = bo->vaddr + offset;

	info->screen_size = size;

	info->fix.smem_start = (unsigned long)(bo->iova + offset);

	info->fix.smem_len = size;