From: Gustavo Padovan gustavo.padovan@collabora.com
Add support for async updates of cursors by using the new atomic interface for that. Basically what this commit does is do what vc4_update_plane() did but through atomic.
v5: add missing call to vc4_plane_atomic_check() (Eric Anholt)
v4: add drm_atomic_helper_async() commit (Eric Anholt)
v3: move size checks back to drivers (Ville Syrjälä)
v2: move fb setting to core and use new state (Eric Anholt)
Cc: Eric Anholt eric@anholt.net Signed-off-by: Gustavo Padovan gustavo.padovan@collabora.com Reviewed-by: Eric Anholt eric@anholt.net Signed-off-by: Eric Anholt eric@anholt.net --- drivers/gpu/drm/vc4/vc4_kms.c | 20 +++++++ drivers/gpu/drm/vc4/vc4_plane.c | 128 ++++++++++++++++------------------------ 2 files changed, 71 insertions(+), 77 deletions(-)
diff --git a/drivers/gpu/drm/vc4/vc4_kms.c b/drivers/gpu/drm/vc4/vc4_kms.c index 27edae4..efd2656 100644 --- a/drivers/gpu/drm/vc4/vc4_kms.c +++ b/drivers/gpu/drm/vc4/vc4_kms.c @@ -95,6 +95,26 @@ static int vc4_atomic_commit(struct drm_device *dev, struct vc4_dev *vc4 = to_vc4_dev(dev); int ret;
+ if (state->async_update) { + ret = down_interruptible(&vc4->async_modeset); + if (ret) + return ret; + + ret = drm_atomic_helper_prepare_planes(dev, state); + if (ret) { + up(&vc4->async_modeset); + return ret; + } + + drm_atomic_helper_async_commit(dev, state); + + drm_atomic_helper_cleanup_planes(dev, state); + + up(&vc4->async_modeset); + + return 0; + } + ret = drm_atomic_helper_setup_commit(state, nonblock); if (ret) return ret; diff --git a/drivers/gpu/drm/vc4/vc4_plane.c b/drivers/gpu/drm/vc4/vc4_plane.c index 8853e9a..52bf74c 100644 --- a/drivers/gpu/drm/vc4/vc4_plane.c +++ b/drivers/gpu/drm/vc4/vc4_plane.c @@ -759,87 +759,41 @@ void vc4_plane_async_set_fb(struct drm_plane *plane, struct drm_framebuffer *fb) vc4_state->dlist[vc4_state->ptr0_offset] = addr; }
-static int vc4_prepare_fb(struct drm_plane *plane, - struct drm_plane_state *state) +static int vc4_plane_atomic_async_check(struct drm_plane *plane, + struct drm_plane_state *state) { - struct vc4_bo *bo; - struct dma_fence *fence; + if (plane != state->crtc->cursor) + return -EINVAL;
- if ((plane->state->fb == state->fb) || !state->fb) - return 0; + if (!plane->state) + return -EINVAL;
- bo = to_vc4_bo(&drm_fb_cma_get_gem_obj(state->fb, 0)->base); - fence = reservation_object_get_excl_rcu(bo->resv); - drm_atomic_set_fence_for_plane(state, fence); + /* No configuring new scaling in the fast path. */ + if (state->crtc_w != plane->state->crtc_w || + state->crtc_h != plane->state->crtc_h || + state->src_w != plane->state->src_w || + state->src_h != plane->state->src_h) { + return -EINVAL; + }
return 0; }
-static const struct drm_plane_helper_funcs vc4_plane_helper_funcs = { - .atomic_check = vc4_plane_atomic_check, - .atomic_update = vc4_plane_atomic_update, - .prepare_fb = vc4_prepare_fb, -}; - -static void vc4_plane_destroy(struct drm_plane *plane) -{ - drm_plane_helper_disable(plane); - drm_plane_cleanup(plane); -} - -/* Implements immediate (non-vblank-synced) updates of the cursor - * position, or falls back to the atomic helper otherwise. - */ -static int -vc4_update_plane(struct drm_plane *plane, - struct drm_crtc *crtc, - struct drm_framebuffer *fb, - int crtc_x, int crtc_y, - unsigned int crtc_w, unsigned int crtc_h, - uint32_t src_x, uint32_t src_y, - uint32_t src_w, uint32_t src_h, - struct drm_modeset_acquire_ctx *ctx) +static void vc4_plane_atomic_async_update(struct drm_plane *plane, + struct drm_plane_state *new_state) { - struct drm_plane_state *plane_state; - struct vc4_plane_state *vc4_state; - - if (plane != crtc->cursor) - goto out; - - plane_state = plane->state; - vc4_state = to_vc4_plane_state(plane_state); - - if (!plane_state) - goto out; - - /* No configuring new scaling in the fast path. */ - if (crtc_w != plane_state->crtc_w || - crtc_h != plane_state->crtc_h || - src_w != plane_state->src_w || - src_h != plane_state->src_h) { - goto out; - } - - if (fb != plane_state->fb) { - drm_atomic_set_fb_for_plane(plane->state, fb); - vc4_plane_async_set_fb(plane, fb); - } + struct vc4_plane_state *vc4_state = to_vc4_plane_state(plane->state);
- /* Set the cursor's position on the screen. This is the - * expected change from the drm_mode_cursor_universal() - * helper. - */ - plane_state->crtc_x = crtc_x; - plane_state->crtc_y = crtc_y; + plane->state->src_x = new_state->src_x; + plane->state->src_y = new_state->src_y; + plane->state->crtc_x = new_state->crtc_x; + plane->state->crtc_y = new_state->crtc_y;
- /* Allow changing the start position within the cursor BO, if - * that matters. - */ - plane_state->src_x = src_x; - plane_state->src_y = src_y; + if (plane->state->fb != new_state->fb) + vc4_plane_async_set_fb(plane, new_state->fb);
/* Update the display list based on the new crtc_x/y. */ - vc4_plane_atomic_check(plane, plane_state); + vc4_plane_atomic_check(plane, plane->state);
/* Note that we can't just call vc4_plane_write_dlist() * because that would smash the context data that the HVS is @@ -851,20 +805,40 @@ vc4_update_plane(struct drm_plane *plane, &vc4_state->hw_dlist[vc4_state->pos2_offset]); writel(vc4_state->dlist[vc4_state->ptr0_offset], &vc4_state->hw_dlist[vc4_state->ptr0_offset]); +} + +static int vc4_prepare_fb(struct drm_plane *plane, + struct drm_plane_state *state) +{ + struct vc4_bo *bo; + struct dma_fence *fence; + + if ((plane->state->fb == state->fb) || !state->fb) + return 0; + + bo = to_vc4_bo(&drm_fb_cma_get_gem_obj(state->fb, 0)->base); + fence = reservation_object_get_excl_rcu(bo->resv); + drm_atomic_set_fence_for_plane(state, fence);
return 0; +} + +static const struct drm_plane_helper_funcs vc4_plane_helper_funcs = { + .atomic_check = vc4_plane_atomic_check, + .atomic_update = vc4_plane_atomic_update, + .atomic_async_check = vc4_plane_atomic_async_check, + .atomic_async_update = vc4_plane_atomic_async_update, + .prepare_fb = vc4_prepare_fb, +};
-out: - return drm_atomic_helper_update_plane(plane, crtc, fb, - crtc_x, crtc_y, - crtc_w, crtc_h, - src_x, src_y, - src_w, src_h, - ctx); +static void vc4_plane_destroy(struct drm_plane *plane) +{ + drm_plane_helper_disable(plane); + drm_plane_cleanup(plane); }
static const struct drm_plane_funcs vc4_plane_funcs = { - .update_plane = vc4_update_plane, + .update_plane = drm_atomic_helper_update_plane, .disable_plane = drm_atomic_helper_disable_plane, .destroy = vc4_plane_destroy, .set_property = NULL,