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drm/fbdev-dma: Use regular fbdev I/O helpers

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Use the regular fbdev helpers for framebuffer I/O instead of DRM's
helpers. Fbdev-dma does not use damage handling, so DRM's fbdev helpers
are mere wrappers around the fbdev code.

By using fbdev helpers directly within each DRM fbdev emulation,
we can eventually remove DRM's wrapper functions entirely.

v4:
	* use initializer macros for struct fb_ops
v2:
	* use FB_SYS_HELPERS option

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20230530151228.22979-8-tzimmermann@suse.de
This commit is contained in:
Thomas Zimmermann 2023-05-30 17:12:22 +02:00
parent 6ebf23bf5e
commit 859cc65f4d
2 changed files with 6 additions and 6 deletions
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1
drivers/gpu/drm/Kconfig
View File

@ -223,6 +223,7 @@ config DRM_TTM_HELPER
config DRM_GEM_DMA_HELPER
tristate
depends on DRM
select FB_SYS_HELPERS if DRM_FBDEV_EMULATION
help
Choose this if you need the GEM DMA helper functions

11
drivers/gpu/drm/drm_fbdev_dma.c
View File

@ -1,5 +1,7 @@
// SPDX-License-Identifier: MIT
#include <linux/fb.h>
#include <drm/drm_crtc_helper.h>
#include <drm/drm_drv.h>
#include <drm/drm_fb_helper.h>
@ -64,14 +66,11 @@ static const struct fb_ops drm_fbdev_dma_fb_ops = {
.owner = THIS_MODULE,
.fb_open = drm_fbdev_dma_fb_open,
.fb_release = drm_fbdev_dma_fb_release,
.fb_read = drm_fb_helper_sys_read,
.fb_write = drm_fb_helper_sys_write,
__FB_DEFAULT_SYS_OPS_RDWR,
DRM_FB_HELPER_DEFAULT_OPS,
.fb_fillrect = drm_fb_helper_sys_fillrect,
.fb_copyarea = drm_fb_helper_sys_copyarea,
.fb_imageblit = drm_fb_helper_sys_imageblit,
.fb_destroy = drm_fbdev_dma_fb_destroy,
__FB_DEFAULT_SYS_OPS_DRAW,
.fb_mmap = drm_fbdev_dma_fb_mmap,
.fb_destroy = drm_fbdev_dma_fb_destroy,
};
/*