diff options
Diffstat (limited to 'drivers/gpu/drm/i915/intel_lvds.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_lvds.c | 25 |
1 files changed, 20 insertions, 5 deletions
diff --git a/drivers/gpu/drm/i915/intel_lvds.c b/drivers/gpu/drm/i915/intel_lvds.c index 98ae3d73577..808bbe412ba 100644 --- a/drivers/gpu/drm/i915/intel_lvds.c +++ b/drivers/gpu/drm/i915/intel_lvds.c @@ -656,6 +656,15 @@ static int intel_lvds_get_modes(struct drm_connector *connector) return 0; } +/* + * Lid events. Note the use of 'modeset_on_lid': + * - we set it on lid close, and reset it on open + * - we use it as a "only once" bit (ie we ignore + * duplicate events where it was already properly + * set/reset) + * - the suspend/resume paths will also set it to + * zero, since they restore the mode ("lid open"). + */ static int intel_lid_notify(struct notifier_block *nb, unsigned long val, void *unused) { @@ -663,13 +672,19 @@ static int intel_lid_notify(struct notifier_block *nb, unsigned long val, container_of(nb, struct drm_i915_private, lid_notifier); struct drm_device *dev = dev_priv->dev; - if (acpi_lid_open() && !dev_priv->suspended) { - mutex_lock(&dev->mode_config.mutex); - drm_helper_resume_force_mode(dev); - mutex_unlock(&dev->mode_config.mutex); + if (!acpi_lid_open()) { + dev_priv->modeset_on_lid = 1; + return NOTIFY_OK; } - drm_sysfs_hotplug_event(dev_priv->dev); + if (!dev_priv->modeset_on_lid) + return NOTIFY_OK; + + dev_priv->modeset_on_lid = 0; + + mutex_lock(&dev->mode_config.mutex); + drm_helper_resume_force_mode(dev); + mutex_unlock(&dev->mode_config.mutex); return NOTIFY_OK; } |