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drm/i915: Add an encoder .shutdown() hook 

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@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20201001151640.14590-2-ville.syrjala@linux.intel.com
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
This commit is contained in:
Ville Syrjälä 2020-10-01 18:16:36 +03:00
parent fe0f1e3bfd
commit 100fe4c01e
2 changed files with 18 additions and 0 deletions
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5
drivers/gpu/drm/i915/display/intel_display_types.h
View File

@ -214,6 +214,11 @@ 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 */

13
drivers/gpu/drm/i915/i915_drv.c
View File

@ -1037,6 +1037,18 @@ 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);
@ -1051,6 +1063,7 @@ 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)