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| author | Thomas Zimmermann <tzimmermann@suse.de> | 2022-11-03 16:14:40 +0100 |
|---|---|---|
| committer | Thomas Zimmermann <tzimmermann@suse.de> | 2022-11-05 17:05:54 +0100 |
| commit | 983780918c759fdbbf0bf033e701bbff75d2af23 (patch) | |
| tree | b1b7bc5fe54d8fb9cc2a44d0b4df7386633dfd85 /drivers/gpu/drm/tegra/fb.c | |
| parent | 3add5f97734d8cbb5e2035dca226f691eb2f12a2 (diff) | |
| download | linux-983780918c759fdbbf0bf033e701bbff75d2af23.tar.bz2 | |
drm/fb-helper: Perform all fbdev I/O with the same implementation
Implement the fbdev's read/write helpers with the same functions. Use
the generic fbdev's code as template. Convert all drivers.
DRM's fb helpers must implement regular I/O functionality in struct
fb_ops and possibly perform a damage update. Handle all this in the
same functions and convert drivers. The functionality has been used
as part of the generic fbdev code for some time. The drivers don't
set struct drm_fb_helper.fb_dirty, so they will not be affected by
damage handling.
For I/O memory, fb helpers now provide drm_fb_helper_cfb_read() and
drm_fb_helper_cfb_write(). Several drivers require these. Until now
tegra used I/O read and write, although the memory buffer appears to
be in system memory. So use _sys_ helpers now.
v3:
* fix docs (Javier)
v2:
* rebase onto vmwgfx changes
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20221103151446.2638-18-tzimmermann@suse.de
Diffstat (limited to 'drivers/gpu/drm/tegra/fb.c')
| -rw-r--r-- | drivers/gpu/drm/tegra/fb.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/gpu/drm/tegra/fb.c b/drivers/gpu/drm/tegra/fb.c index 84b7f1dd9fb5..a900300ae5bd 100644 --- a/drivers/gpu/drm/tegra/fb.c +++ b/drivers/gpu/drm/tegra/fb.c @@ -206,6 +206,8 @@ static int tegra_fb_mmap(struct fb_info *info, struct vm_area_struct *vma) static const struct fb_ops tegra_fb_ops = { .owner = THIS_MODULE, DRM_FB_HELPER_DEFAULT_OPS, + .fb_read = drm_fb_helper_sys_read, + .fb_write = drm_fb_helper_sys_write, .fb_fillrect = drm_fb_helper_sys_fillrect, .fb_copyarea = drm_fb_helper_sys_copyarea, .fb_imageblit = drm_fb_helper_sys_imageblit, |