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author | Thomas Zimmermann <tzimmermann@suse.de> | 2022-10-25 12:17:36 +0200 |
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committer | Thomas Zimmermann <tzimmermann@suse.de> | 2022-11-08 17:10:27 +0100 |
commit | 94d879eaf7fb02a0d022a190278b3fd45b1efbd7 (patch) | |
tree | 26ba5a5655ecc577fc530230fc1216bcd9f14a74 /drivers/gpu/drm/drm_simple_kms_helper.c | |
parent | drm/fb-helper: Document struct drm_fb_helper.hint_leak_smem_start (diff) | |
download | linux-94d879eaf7fb02a0d022a190278b3fd45b1efbd7.tar.xz linux-94d879eaf7fb02a0d022a190278b3fd45b1efbd7.zip |
drm/atomic-helper: Add {begin,end}_fb_access to plane helpers
Add {begin,end}_fb_access helpers to run at the beginning and end of
an atomic commit. The begin_fb_access helper acquires resources that
are necessary to perform the atomic commit. It it similar to prepare_fb,
except that the resources are to be released at the end of the commit.
Resources acquired by prepare_fb are held until after the next pageflip.
The end_fb_access helper performs the corresponding resource cleanup.
Atomic helpers call it with the new plane state. This is different from
cleanup_fb, which releases resources of the old plane state.
v2:
* fix typos in commit message (Javier)
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20221025101737.8874-2-tzimmermann@suse.de
Diffstat (limited to 'drivers/gpu/drm/drm_simple_kms_helper.c')
-rw-r--r-- | drivers/gpu/drm/drm_simple_kms_helper.c | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/drivers/gpu/drm/drm_simple_kms_helper.c b/drivers/gpu/drm/drm_simple_kms_helper.c index 31233c6ae3c4..3ef420ec4534 100644 --- a/drivers/gpu/drm/drm_simple_kms_helper.c +++ b/drivers/gpu/drm/drm_simple_kms_helper.c @@ -285,6 +285,30 @@ static void drm_simple_kms_plane_cleanup_fb(struct drm_plane *plane, pipe->funcs->cleanup_fb(pipe, state); } +static int drm_simple_kms_plane_begin_fb_access(struct drm_plane *plane, + struct drm_plane_state *new_plane_state) +{ + struct drm_simple_display_pipe *pipe; + + pipe = container_of(plane, struct drm_simple_display_pipe, plane); + if (!pipe->funcs || !pipe->funcs->begin_fb_access) + return 0; + + return pipe->funcs->begin_fb_access(pipe, new_plane_state); +} + +static void drm_simple_kms_plane_end_fb_access(struct drm_plane *plane, + struct drm_plane_state *new_plane_state) +{ + struct drm_simple_display_pipe *pipe; + + pipe = container_of(plane, struct drm_simple_display_pipe, plane); + if (!pipe->funcs || !pipe->funcs->end_fb_access) + return; + + pipe->funcs->end_fb_access(pipe, new_plane_state); +} + static bool drm_simple_kms_format_mod_supported(struct drm_plane *plane, uint32_t format, uint64_t modifier) @@ -295,6 +319,8 @@ static bool drm_simple_kms_format_mod_supported(struct drm_plane *plane, static const struct drm_plane_helper_funcs drm_simple_kms_plane_helper_funcs = { .prepare_fb = drm_simple_kms_plane_prepare_fb, .cleanup_fb = drm_simple_kms_plane_cleanup_fb, + .begin_fb_access = drm_simple_kms_plane_begin_fb_access, + .end_fb_access = drm_simple_kms_plane_end_fb_access, .atomic_check = drm_simple_kms_plane_atomic_check, .atomic_update = drm_simple_kms_plane_atomic_update, }; |