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drm: Make the connector dpms callback return a value, v2.

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This is required to properly handle failing dpms calls.
When making a wait in i915 interruptible, I've noticed
that the dpms sequence could fail with -ERESTARTSYS because
it was waiting interruptibly for flips. So from now on
allow drivers to fail in their connector dpms callback.

Encoder and crtc dpms callbacks are unaffected.

Changes since v1:
- Update kerneldoc for the drm helper functions.

Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
[danvet: Resolve conflicts due to different merge order.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Maarten Lankhorst
2015-07-21 11:34:55 +02:00
committed by Daniel Vetter
parent 613d2b2721
commit 9a69a9ac20
19 changed files with 65 additions and 44 deletions
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2
include/drm/drm_crtc.h
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@@ -527,7 +527,7 @@ struct drm_connector_state {
* etc.
*/
struct drm_connector_funcs {
void (*dpms)(struct drm_connector *connector, int mode);
int (*dpms)(struct drm_connector *connector, int mode);
void (*save)(struct drm_connector *connector);
void (*restore)(struct drm_connector *connector);
void (*reset)(struct drm_connector *connector);