This will poke userspace into probing for configuration changes that may
have occurred across suspend/resume.
Signed-off-by: Jesse Barnes <jbar...@virtuousgeek.org>
---
drivers/gpu/drm/i915/i915_drv.c | 20 ++++++++++++++++++++
1 file changed, 20 insertions(+)
diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c
index e76b038..1b37eec 100644
--- a/drivers/gpu/drm/i915/i915_drv.c
+++ b/drivers/gpu/drm/i915/i915_drv.c
@@ -551,6 +551,24 @@ void intel_console_resume(struct work_struct *work)
console_unlock();
}
+static void intel_resume_hotplug(struct drm_device *dev)
+{
+ struct drm_mode_config *mode_config = &dev->mode_config;
+ struct intel_encoder *encoder;
+
+ mutex_lock(&mode_config->mutex);
+ DRM_DEBUG_KMS("running encoder hotplug functions\n");
+
+ list_for_each_entry(encoder, &mode_config->encoder_list, base.head)
+ if (encoder->hot_plug)
+ encoder->hot_plug(encoder);
+
+ mutex_unlock(&mode_config->mutex);
+
+ /* Just fire off a uevent and let userspace tell us what to do */
+ drm_helper_hpd_irq_event(dev);
+}
+
static int __i915_drm_thaw(struct drm_device *dev)
{
struct drm_i915_private *dev_priv = dev->dev_private;
@@ -578,6 +596,8 @@ static int __i915_drm_thaw(struct drm_device *dev)
drm_modeset_lock_all(dev);
intel_modeset_setup_hw_state(dev, true);
drm_modeset_unlock_all(dev);
+
+ intel_resume_hotplug(dev);
}
intel_opregion_init(dev);
--
1.7.9.5
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