diff options
Diffstat (limited to 'drivers/gpu/drm/drm_atomic.c')
| -rw-r--r-- | drivers/gpu/drm/drm_atomic.c | 51 |
1 files changed, 43 insertions, 8 deletions
diff --git a/drivers/gpu/drm/drm_atomic.c b/drivers/gpu/drm/drm_atomic.c index dda60051854b..dd9ed000ad4c 100644 --- a/drivers/gpu/drm/drm_atomic.c +++ b/drivers/gpu/drm/drm_atomic.c @@ -53,6 +53,45 @@ void __drm_crtc_commit_free(struct kref *kref) EXPORT_SYMBOL(__drm_crtc_commit_free); /** + * drm_crtc_commit_wait - Waits for a commit to complete + * @commit: &drm_crtc_commit to wait for + * + * Waits for a given &drm_crtc_commit to be programmed into the + * hardware and flipped to. + * + * Returns: + * + * 0 on success, a negative error code otherwise. + */ +int drm_crtc_commit_wait(struct drm_crtc_commit *commit) +{ + unsigned long timeout = 10 * HZ; + int ret; + + if (!commit) + return 0; + + ret = wait_for_completion_timeout(&commit->hw_done, timeout); + if (!ret) { + DRM_ERROR("hw_done timed out\n"); + return -ETIMEDOUT; + } + + /* + * Currently no support for overwriting flips, hence + * stall for previous one to execute completely. + */ + ret = wait_for_completion_timeout(&commit->flip_done, timeout); + if (!ret) { + DRM_ERROR("flip_done timed out\n"); + return -ETIMEDOUT; + } + + return 0; +} +EXPORT_SYMBOL(drm_crtc_commit_wait); + +/** * drm_atomic_state_default_release - * release memory initialized by drm_atomic_state_init * @state: atomic state @@ -578,13 +617,9 @@ static int drm_atomic_plane_check(const struct drm_plane_state *old_plane_state, ret = drm_plane_check_pixel_format(plane, fb->format->format, fb->modifier); if (ret) { - struct drm_format_name_buf format_name; - - DRM_DEBUG_ATOMIC("[PLANE:%d:%s] invalid pixel format %s, modifier 0x%llx\n", + DRM_DEBUG_ATOMIC("[PLANE:%d:%s] invalid pixel format %p4cc, modifier 0x%llx\n", plane->base.id, plane->name, - drm_get_format_name(fb->format->format, - &format_name), - fb->modifier); + &fb->format->format, fb->modifier); return ret; } @@ -1148,7 +1183,7 @@ EXPORT_SYMBOL(drm_atomic_add_encoder_bridges); * This function walks the current configuration and adds all connectors * currently using @crtc to the atomic configuration @state. Note that this * function must acquire the connection mutex. This can potentially cause - * unneeded seralization if the update is just for the planes on one CRTC. Hence + * unneeded serialization if the update is just for the planes on one CRTC. Hence * drivers and helpers should only call this when really needed (e.g. when a * full modeset needs to happen due to some change). * @@ -1213,7 +1248,7 @@ EXPORT_SYMBOL(drm_atomic_add_affected_connectors); * * Since acquiring a plane state will always also acquire the w/w mutex of the * current CRTC for that plane (if there is any) adding all the plane states for - * a CRTC will not reduce parallism of atomic updates. + * a CRTC will not reduce parallelism of atomic updates. * * Returns: * 0 on success or can fail with -EDEADLK or -ENOMEM. When the error is EDEADLK |