From a40e65b76430a6ce0bb22ed8327c56dd5044a4a3 Mon Sep 17 00:00:00 2001 From: Lucas Stach Date: Thu, 11 Aug 2016 11:18:51 +0200 Subject: [PATCH] drm/imx: add exclusive fence to plane state This allows the atomic helper to wait on them, instead of open-coding the same in the imx-drm driver. Signed-off-by: Lucas Stach Signed-off-by: Philipp Zabel --- drivers/gpu/drm/imx/imx-drm-core.c | 63 +++++++++++++++++--------------------- 1 file changed, 28 insertions(+), 35 deletions(-) diff --git a/drivers/gpu/drm/imx/imx-drm-core.c b/drivers/gpu/drm/imx/imx-drm-core.c index 3cc8e4a..98df09c 100644 --- a/drivers/gpu/drm/imx/imx-drm-core.c +++ b/drivers/gpu/drm/imx/imx-drm-core.c @@ -151,50 +151,43 @@ static int imx_drm_atomic_check(struct drm_device *dev, return ret; } +static int imx_drm_atomic_commit(struct drm_device *dev, + struct drm_atomic_state *state, + bool nonblock) +{ + struct drm_plane_state *plane_state; + struct drm_plane *plane; + struct dma_buf *dma_buf; + int i; + + /* + * If the plane fb has an dma-buf attached, fish out the exclusive + * fence for the atomic helper to wait on. + */ + for_each_plane_in_state(state, plane, plane_state, i) { + if ((plane->state->fb != plane_state->fb) && plane_state->fb) { + dma_buf = drm_fb_cma_get_gem_obj(plane_state->fb, + 0)->base.dma_buf; + if (!dma_buf) + continue; + plane_state->fence = + reservation_object_get_excl_rcu(dma_buf->resv); + } + } + + return drm_atomic_helper_commit(dev, state, nonblock); +} + static const struct drm_mode_config_funcs imx_drm_mode_config_funcs = { .fb_create = drm_fb_cma_create, .output_poll_changed = imx_drm_output_poll_changed, .atomic_check = imx_drm_atomic_check, - .atomic_commit = drm_atomic_helper_commit, + .atomic_commit = imx_drm_atomic_commit, }; static void imx_drm_atomic_commit_tail(struct drm_atomic_state *state) { struct drm_device *dev = state->dev; - struct drm_crtc *crtc; - struct drm_crtc_state *crtc_state; - struct drm_plane_state *plane_state; - struct drm_gem_cma_object *cma_obj; - struct fence *excl; - unsigned shared_count; - struct fence **shared; - unsigned int i, j; - int ret; - - /* Wait for fences. */ - for_each_crtc_in_state(state, crtc, crtc_state, i) { - plane_state = crtc->primary->state; - if (plane_state->fb) { - cma_obj = drm_fb_cma_get_gem_obj(plane_state->fb, 0); - if (cma_obj->base.dma_buf) { - ret = reservation_object_get_fences_rcu( - cma_obj->base.dma_buf->resv, &excl, - &shared_count, &shared); - if (unlikely(ret)) - DRM_ERROR("failed to get fences " - "for buffer\n"); - - if (excl) { - fence_wait(excl, false); - fence_put(excl); - } - for (j = 0; j < shared_count; i++) { - fence_wait(shared[j], false); - fence_put(shared[j]); - } - } - } - } drm_atomic_helper_commit_modeset_disables(dev, state); -- 2.7.4