Commit d2008827 authored by Ville Syrjälä's avatar Ville Syrjälä
Browse files

drm/i915: Wait for LVDS panel power cycle delay on reboot 



Just like with eDP let's wait for the power sequencer power
cycle delay before we reboot the machine, as otherwise we
can't guarantee the panel's minimum power cycle delay will
be respected.

Signed-off-by: default avatarVille Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20201001151640.14590-5-ville.syrjala@linux.intel.com


Reviewed-by: default avatarJani Nikula <jani.nikula@intel.com>
parent e219ef91

drivers/gpu/drm/i915/display/intel_lvds.c

+10 −0
Original line number Diff line number Diff line
@@ -371,6 +371,15 @@ static void pch_post_disable_lvds(struct intel_atomic_state *state, 
	intel_disable_lvds(state, encoder, old_crtc_state, old_conn_state);

}



static void intel_lvds_shutdown(struct intel_encoder *encoder)

{

	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);



	if (intel_de_wait_for_clear(dev_priv, PP_STATUS(0), PP_CYCLE_DELAY_ACTIVE, 5000))

		drm_err(&dev_priv->drm,

			"timed out waiting for panel power cycle delay\n");

}



static enum drm_mode_status

intel_lvds_mode_valid(struct drm_connector *connector,

		      struct drm_display_mode *mode)
@@ -897,6 +906,7 @@ void intel_lvds_init(struct drm_i915_private *dev_priv) 
	intel_encoder->get_hw_state = intel_lvds_get_hw_state;

	intel_encoder->get_config = intel_lvds_get_config;

	intel_encoder->update_pipe = intel_panel_update_backlight;

	intel_encoder->shutdown = intel_lvds_shutdown;

	intel_connector->get_hw_state = intel_connector_get_hw_state;



	intel_connector_attach_encoder(intel_connector, intel_encoder);

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