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drm: introduce atomic_begin for connector

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atomic_begin is used to prepare for update flush.

Change-Id: I1d3a2afaea4022c065bda2b4c0746464cc0c1303
Signed-off-by: Zheng Yang <zhengyang@rock-chips.com>
This commit is contained in:
Zheng Yang 2017-12-05 16:14:19 +08:00 committed by Tao Huang
parent d534e6ca79
commit 773d508df7
2 changed files with 22 additions and 0 deletions
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20
drivers/gpu/drm/drm_atomic_helper.c
View File

@ -1558,6 +1558,26 @@ void drm_atomic_helper_commit_planes(struct drm_device *dev,
struct drm_connector_state *old_conn_state;
int i;
for_each_connector_in_state(old_state, connector, old_conn_state, i) {
const struct drm_connector_helper_funcs *funcs;
if (!connector->state->crtc)
continue;
if (!connector->state->crtc->state->active)
continue;
funcs = connector->helper_private;
if (!funcs || !funcs->atomic_begin)
continue;
DRM_DEBUG_ATOMIC("flush beginning [CONNECTOR:%d:%s]\n",
connector->base.id, connector->name);
funcs->atomic_begin(connector, old_conn_state);
}
for_each_crtc_in_state(old_state, crtc, old_crtc_state, i) {
const struct drm_crtc_helper_funcs *funcs;

2
include/drm/drm_crtc_helper.h
View File

@ -185,6 +185,8 @@ struct drm_connector_helper_funcs {
struct drm_encoder *(*best_encoder)(struct drm_connector *connector);
struct drm_encoder *(*atomic_best_encoder)(struct drm_connector *connector,
struct drm_connector_state *connector_state);
void (*atomic_begin)(struct drm_connector *connector,
struct drm_connector_state *conn_state);
void (*atomic_flush)(struct drm_connector *connector,
struct drm_connector_state *conn_state);
};