From 9801a7eadf4cc29cdc90583a49f12decbb832ced Mon Sep 17 00:00:00 2001 From: "james qian wang (Arm Technology China)" Date: Tue, 22 Jan 2019 11:05:41 +0000 Subject: [PATCH] drm: Add drm_atomic_get_old/new_private_obj_state This pair of functions return the old/new private object state for the given private_obj, or NULL if the private_obj is not part of the global atomic state. Reviewed-by: Alexandru Gheorghe Signed-off-by: James Qian Wang (Arm Technology China) Signed-off-by: Liviu Dudau --- drivers/gpu/drm/drm_atomic.c | 45 +++++++++++++++++++++++++++++++++++- include/drm/drm_atomic.h | 6 +++++ 2 files changed, 50 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/drm_atomic.c b/drivers/gpu/drm/drm_atomic.c index 5eb40130fafb..f4924cb7f495 100644 --- a/drivers/gpu/drm/drm_atomic.c +++ b/drivers/gpu/drm/drm_atomic.c @@ -797,6 +797,50 @@ drm_atomic_get_private_obj_state(struct drm_atomic_state *state, } EXPORT_SYMBOL(drm_atomic_get_private_obj_state); +/** + * drm_atomic_get_old_private_obj_state + * @state: global atomic state object + * @obj: private_obj to grab + * + * This function returns the old private object state for the given private_obj, + * or NULL if the private_obj is not part of the global atomic state. + */ +struct drm_private_state * +drm_atomic_get_old_private_obj_state(struct drm_atomic_state *state, + struct drm_private_obj *obj) +{ + int i; + + for (i = 0; i < state->num_private_objs; i++) + if (obj == state->private_objs[i].ptr) + return state->private_objs[i].old_state; + + return NULL; +} +EXPORT_SYMBOL(drm_atomic_get_old_private_obj_state); + +/** + * drm_atomic_get_new_private_obj_state + * @state: global atomic state object + * @obj: private_obj to grab + * + * This function returns the new private object state for the given private_obj, + * or NULL if the private_obj is not part of the global atomic state. + */ +struct drm_private_state * +drm_atomic_get_new_private_obj_state(struct drm_atomic_state *state, + struct drm_private_obj *obj) +{ + int i; + + for (i = 0; i < state->num_private_objs; i++) + if (obj == state->private_objs[i].ptr) + return state->private_objs[i].new_state; + + return NULL; +} +EXPORT_SYMBOL(drm_atomic_get_new_private_obj_state); + /** * drm_atomic_get_connector_state - get connector state * @state: global atomic state object @@ -1236,4 +1280,3 @@ int drm_atomic_debugfs_init(struct drm_minor *minor) minor->debugfs_root, minor); } #endif - diff --git a/include/drm/drm_atomic.h b/include/drm/drm_atomic.h index 824a5ed4e216..e937ff2beb04 100644 --- a/include/drm/drm_atomic.h +++ b/include/drm/drm_atomic.h @@ -452,6 +452,12 @@ void drm_atomic_private_obj_fini(struct drm_private_obj *obj); struct drm_private_state * __must_check drm_atomic_get_private_obj_state(struct drm_atomic_state *state, struct drm_private_obj *obj); +struct drm_private_state * +drm_atomic_get_old_private_obj_state(struct drm_atomic_state *state, + struct drm_private_obj *obj); +struct drm_private_state * +drm_atomic_get_new_private_obj_state(struct drm_atomic_state *state, + struct drm_private_obj *obj); /** * drm_atomic_get_existing_crtc_state - get crtc state, if it exists -- 2.30.2