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drm: return if changed in drm_helper_hpd_irq_event()

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The caller may want to know whether the configuration was changed, and
if an hotplug event was sent.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Marc-André Lureau 2013-10-18 16:11:28 +02:00 • committed by Dave Airlie
parent 74afee7dd9
commit b8206d3916
2 changed files with 5 additions and 3 deletions
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6
drivers/gpu/drm/drm_crtc_helper.c
View file

@ -1131,14 +1131,14 @@ void drm_kms_helper_poll_fini(struct drm_device *dev)
} }
EXPORT_SYMBOL(drm_kms_helper_poll_fini); EXPORT_SYMBOL(drm_kms_helper_poll_fini);
void drm_helper_hpd_irq_event(struct drm_device *dev) bool drm_helper_hpd_irq_event(struct drm_device *dev)
{ {
struct drm_connector *connector; struct drm_connector *connector;
enum drm_connector_status old_status; enum drm_connector_status old_status;
bool changed = false; bool changed = false;
if (!dev->mode_config.poll_enabled) if (!dev->mode_config.poll_enabled)
return; return false;
mutex_lock(&dev->mode_config.mutex); mutex_lock(&dev->mode_config.mutex);
list_for_each_entry(connector, &dev->mode_config.connector_list, head) { list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
@ -1163,5 +1163,7 @@ void drm_helper_hpd_irq_event(struct drm_device *dev)
if (changed) if (changed)
drm_kms_helper_hotplug_event(dev); drm_kms_helper_hotplug_event(dev);
return changed;
} }
EXPORT_SYMBOL(drm_helper_hpd_irq_event); EXPORT_SYMBOL(drm_helper_hpd_irq_event);

2
include/drm/drm_crtc_helper.h
View file

@ -163,7 +163,7 @@ static inline void drm_connector_helper_add(struct drm_connector *connector,
extern int drm_helper_resume_force_mode(struct drm_device *dev); extern int drm_helper_resume_force_mode(struct drm_device *dev);
extern void drm_kms_helper_poll_init(struct drm_device *dev); extern void drm_kms_helper_poll_init(struct drm_device *dev);
extern void drm_kms_helper_poll_fini(struct drm_device *dev); extern void drm_kms_helper_poll_fini(struct drm_device *dev);
extern void drm_helper_hpd_irq_event(struct drm_device *dev); extern bool drm_helper_hpd_irq_event(struct drm_device *dev);
extern void drm_kms_helper_hotplug_event(struct drm_device *dev); extern void drm_kms_helper_hotplug_event(struct drm_device *dev);
extern void drm_kms_helper_poll_disable(struct drm_device *dev); extern void drm_kms_helper_poll_disable(struct drm_device *dev);