From: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
Add a new encoder hook .shutdown() which will get called at the end
of the pci .shutdown() hook. We shall use this to deal with the
panel power cycle delay issues.
Signed-off-by: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
---
drivers/gpu/drm/i915/display/intel_display_types.h | 5 +++++
drivers/gpu/drm/i915/i915_drv.c | 13 +++++++++++++
2 files changed, 18 insertions(+)
diff --git a/drivers/gpu/drm/i915/display/intel_display_types.h b/drivers/gpu/drm/i915/display/intel_display_types.h
index d5dc18cb8c39..6f3e3d756383 100644
--- a/drivers/gpu/drm/i915/display/intel_display_types.h
+++ b/drivers/gpu/drm/i915/display/intel_display_types.h
@@ -199,6 +199,11 @@ struct intel_encoder {
* device interrupts are disabled.
*/
void (*suspend)(struct intel_encoder *);
+ /*
+ * Called during system reboot/shutdown after all the
+ * encoders have been disabled and suspended.
+ */
+ void (*shutdown)(struct intel_encoder *encoder);
enum hpd_pin hpd_pin;
enum intel_display_power_domain power_domain;
/* for communication with audio component; protected by av_mutex */
diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c
index 062b61ebd9c4..d38fceb239ac 100644
--- a/drivers/gpu/drm/i915/i915_drv.c
+++ b/drivers/gpu/drm/i915/i915_drv.c
@@ -1036,6 +1036,18 @@ static void intel_suspend_encoders(struct drm_i915_private *dev_priv)
drm_modeset_unlock_all(dev);
}
+static void intel_shutdown_encoders(struct drm_i915_private *dev_priv)
+{
+ struct drm_device *dev = &dev_priv->drm;
+ struct intel_encoder *encoder;
+
+ drm_modeset_lock_all(dev);
+ for_each_intel_encoder(dev, encoder)
+ if (encoder->shutdown)
+ encoder->shutdown(encoder);
+ drm_modeset_unlock_all(dev);
+}
+
void i915_driver_shutdown(struct drm_i915_private *i915)
{
i915_gem_suspend(i915);
@@ -1050,6 +1062,7 @@ void i915_driver_shutdown(struct drm_i915_private *i915)
intel_hpd_cancel_work(i915);
intel_suspend_encoders(i915);
+ intel_shutdown_encoders(i915);
}
static bool suspend_to_idle(struct drm_i915_private *dev_priv)
--
2.26.2
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