On Thu, 01 Oct 2020, Ville Syrjala <ville.syrjala@xxxxxxxxxxxxxxx> wrote:
> 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>
Reviewed-by: Jani Nikula <jani.nikula@xxxxxxxxx>
> ---
> 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)
--
Jani Nikula, Intel Open Source Graphics Center
_______________________________________________
Intel-gfx mailing list
Intel-gfx@xxxxxxxxxxxxxxxxxxxxx
https://lists.freedesktop.org/mailman/listinfo/intel-gfx
