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-rw-r--r--drivers/gpu/drm/drm_crtc_helper.c24
-rw-r--r--include/drm/drm_crtc_helper.h2
2 files changed, 22 insertions, 4 deletions
diff --git a/drivers/gpu/drm/drm_crtc_helper.c b/drivers/gpu/drm/drm_crtc_helper.c
index 205349ea107..eea5e6c4099 100644
--- a/drivers/gpu/drm/drm_crtc_helper.c
+++ b/drivers/gpu/drm/drm_crtc_helper.c
@@ -260,13 +260,27 @@ EXPORT_SYMBOL(drm_helper_crtc_in_use);
void drm_helper_disable_unused_functions(struct drm_device *dev)
{
struct drm_encoder *encoder;
+ struct drm_connector *connector;
struct drm_encoder_helper_funcs *encoder_funcs;
struct drm_crtc *crtc;
+ list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
+ if (!connector->encoder)
+ continue;
+ if (connector->status == connector_status_disconnected)
+ connector->encoder = NULL;
+ }
+
list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
encoder_funcs = encoder->helper_private;
- if (!drm_helper_encoder_in_use(encoder))
- (*encoder_funcs->dpms)(encoder, DRM_MODE_DPMS_OFF);
+ if (!drm_helper_encoder_in_use(encoder)) {
+ if (encoder_funcs->disable)
+ (*encoder_funcs->disable)(encoder);
+ else
+ (*encoder_funcs->dpms)(encoder, DRM_MODE_DPMS_OFF);
+ }
+ /* disconnector encoder from any connector */
+ encoder->crtc = NULL;
}
list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
@@ -411,7 +425,7 @@ static int drm_pick_crtcs(struct drm_device *dev,
c = 0;
list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
- if ((connector->encoder->possible_crtcs & (1 << c)) == 0) {
+ if ((encoder->possible_crtcs & (1 << c)) == 0) {
c++;
continue;
}
@@ -496,8 +510,10 @@ static void drm_setup_crtcs(struct drm_device *dev)
mode->name, crtc->base.id);
crtc->desired_mode = mode;
connector->encoder->crtc = crtc;
- } else
+ } else {
connector->encoder->crtc = NULL;
+ connector->encoder = NULL;
+ }
i++;
}
diff --git a/include/drm/drm_crtc_helper.h b/include/drm/drm_crtc_helper.h
index e44a4f87303..4c8dacaf4f5 100644
--- a/include/drm/drm_crtc_helper.h
+++ b/include/drm/drm_crtc_helper.h
@@ -79,6 +79,8 @@ struct drm_encoder_helper_funcs {
/* detect for DAC style encoders */
enum drm_connector_status (*detect)(struct drm_encoder *encoder,
struct drm_connector *connector);
+ /* disable encoder when not in use - more explicit than dpms off */
+ void (*disable)(struct drm_encoder *encoder);
};
struct drm_connector_helper_funcs {