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drm/atomic: add connector mask to drm_crtc_state.

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It can be useful to iterate over connectors without grabbing
connection_mutex. It can also be used to see how many connectors
are on a crtc without iterating over the list.

Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1451908400-25147-4-git-send-email-maarten.lankhorst@linux.intel.com
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Maarten Lankhorst
2016-01-04 12:53:18 +01:00
committed by Daniel Vetter
parent 5459a2ad9d
commit 4cd9fa529d
2 changed files with 14 additions and 0 deletions
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11
drivers/gpu/drm/drm_atomic.c
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@@ -1063,10 +1063,21 @@ drm_atomic_set_crtc_for_connector(struct drm_connector_state *conn_state,
{
struct drm_crtc_state *crtc_state;
if (conn_state->crtc && conn_state->crtc != crtc) {
crtc_state = drm_atomic_get_existing_crtc_state(conn_state->state,
conn_state->crtc);
crtc_state->connector_mask &=
~(1 << drm_connector_index(conn_state->connector));
}
if (crtc) {
crtc_state = drm_atomic_get_crtc_state(conn_state->state, crtc);
if (IS_ERR(crtc_state))
return PTR_ERR(crtc_state);
crtc_state->connector_mask |=
1 << drm_connector_index(conn_state->connector);
}
conn_state->crtc = crtc;