Allows using atomic flip helpers for drivers using ASYNC flip. Remove ASYNC_FLIP restriction in helpers and caches the page flip flags in drm_crtc_state to be used in the low level drivers.
v2: Resending the patch since the original was broken.
v3: Save flag in crtc_state instead of plane_state
v4: Reset the flag before using again.
v5: Fix type in header. Rename the field to pageflip_flags. Remove unrelated hunk.
Signed-off-by: Andrey Grodzovsky Andrey.Grodzovsky@amd.com --- drivers/gpu/drm/drm_atomic_helper.c | 20 ++++++-------------- include/drm/drm_crtc.h | 9 ++++++++- 2 files changed, 14 insertions(+), 15 deletions(-)
diff --git a/drivers/gpu/drm/drm_atomic_helper.c b/drivers/gpu/drm/drm_atomic_helper.c index a4e5477..63efa05 100644 --- a/drivers/gpu/drm/drm_atomic_helper.c +++ b/drivers/gpu/drm/drm_atomic_helper.c @@ -2737,7 +2737,8 @@ static int page_flip_common( struct drm_atomic_state *state, struct drm_crtc *crtc, struct drm_framebuffer *fb, - struct drm_pending_vblank_event *event) + struct drm_pending_vblank_event *event, + uint32_t flags) { struct drm_plane *plane = crtc->primary; struct drm_plane_state *plane_state; @@ -2749,12 +2750,12 @@ static int page_flip_common( return PTR_ERR(crtc_state);
crtc_state->event = event; + crtc_state->pageflip_flags = flags;
plane_state = drm_atomic_get_plane_state(state, plane); if (IS_ERR(plane_state)) return PTR_ERR(plane_state);
- ret = drm_atomic_set_crtc_for_plane(plane_state, crtc); if (ret != 0) return ret; @@ -2781,10 +2782,6 @@ static int page_flip_common( * Provides a default &drm_crtc_funcs.page_flip implementation * using the atomic driver interface. * - * Note that for now so called async page flips (i.e. updates which are not - * synchronized to vblank) are not supported, since the atomic interfaces have - * no provisions for this yet. - * * Returns: * Returns 0 on success, negative errno numbers on failure. * @@ -2800,9 +2797,6 @@ int drm_atomic_helper_page_flip(struct drm_crtc *crtc, struct drm_atomic_state *state; int ret = 0;
- if (flags & DRM_MODE_PAGE_FLIP_ASYNC) - return -EINVAL; - state = drm_atomic_state_alloc(plane->dev); if (!state) return -ENOMEM; @@ -2810,7 +2804,7 @@ int drm_atomic_helper_page_flip(struct drm_crtc *crtc, state->acquire_ctx = drm_modeset_legacy_acquire_ctx(crtc);
retry: - ret = page_flip_common(state, crtc, fb, event); + ret = page_flip_common(state, crtc, fb, event, flags); if (ret != 0) goto fail;
@@ -2865,9 +2859,6 @@ int drm_atomic_helper_page_flip_target( struct drm_crtc_state *crtc_state; int ret = 0;
- if (flags & DRM_MODE_PAGE_FLIP_ASYNC) - return -EINVAL; - state = drm_atomic_state_alloc(plane->dev); if (!state) return -ENOMEM; @@ -2875,7 +2866,7 @@ int drm_atomic_helper_page_flip_target( state->acquire_ctx = drm_modeset_legacy_acquire_ctx(crtc);
retry: - ret = page_flip_common(state, crtc, fb, event); + ret = page_flip_common(state, crtc, fb, event, flags); if (ret != 0) goto fail;
@@ -3072,6 +3063,7 @@ void __drm_atomic_helper_crtc_duplicate_state(struct drm_crtc *crtc, state->color_mgmt_changed = false; state->zpos_changed = false; state->event = NULL; + state->pageflip_flags = 0; } EXPORT_SYMBOL(__drm_atomic_helper_crtc_duplicate_state);
diff --git a/include/drm/drm_crtc.h b/include/drm/drm_crtc.h index 5c77c3f..76561fb 100644 --- a/include/drm/drm_crtc.h +++ b/include/drm/drm_crtc.h @@ -162,10 +162,17 @@ struct drm_crtc_state { * Target vertical blank period when a page flip * should take effect. */ - u32 target_vblank;
/** + * @pageflip_flags: + * + * DRM_MODE_PAGE_FLIP_* flags, as passed to the page flip ioctl. + * Zero in any other case. + */ + u32 pageflip_flags; + + /** * @event: * * Optional pointer to a DRM event to signal upon completion of the