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| author | Paul Cercueil <paul@crapouillou.net> | 2021-05-23 20:04:14 +0300 |
|---|---|---|
| committer | Paul Cercueil <paul@crapouillou.net> | 2021-05-25 13:42:09 +0300 |
| commit | b09069046d6b7df1deea02cc14dc893e5e96630a (patch) | |
| tree | b18c2c66c36334625fb6c5c6ebda6450a5b92f11 /include/drm | |
| parent | cf8ccbc72d6109eddf6ae04196addf62cf716639 (diff) | |
| download | linux-b09069046d6b7df1deea02cc14dc893e5e96630a.tar.xz | |
drm: Add and export function drm_fb_cma_sync_non_coherent
This function can be used by drivers that use damage clips and have
CMA GEM objects backed by non-coherent memory. Calling this function
in a plane's .atomic_update ensures that all the data in the backing
memory have been written to RAM.
v3: - Only sync data if using GEM objects backed by non-coherent memory.
- Use a drm_device pointer instead of device pointer in prototype
v5: - Rename to drm_fb_cma_sync_non_coherent
- Invert loops for better cache locality
- Only sync BOs that have the non-coherent flag
- Move to drm_fb_cma_helper.c to avoid circular dependency
Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Acked-by: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20210523170415.90410-3-paul@crapouillou.net
Diffstat (limited to 'include/drm')
| -rw-r--r-- | include/drm/drm_fb_cma_helper.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/include/drm/drm_fb_cma_helper.h b/include/drm/drm_fb_cma_helper.h index 795aea1d0a25..6447e34528f8 100644 --- a/include/drm/drm_fb_cma_helper.h +++ b/include/drm/drm_fb_cma_helper.h @@ -4,6 +4,7 @@ #include <linux/types.h> +struct drm_device; struct drm_framebuffer; struct drm_plane_state; @@ -14,5 +15,9 @@ dma_addr_t drm_fb_cma_get_gem_addr(struct drm_framebuffer *fb, struct drm_plane_state *state, unsigned int plane); +void drm_fb_cma_sync_non_coherent(struct drm_device *drm, + struct drm_plane_state *old_state, + struct drm_plane_state *state); + #endif |