drm/i915: Wait for eDP panel power cycle delay on reboot on all platforms

Extend the eDP panel power cycle delay wait on reboot handling
to cover all platforms. No reason to think that VLV/CHV are
in any way special since the documentation states that the
hardware power cycle delay goes back to its default value on
reset, and that may not be enough for all panels.
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20201001151640.14590-4-ville.syrjala@linux.intel.comReviewed-by: Jani Nikula <jani.nikula@intel.com>

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

@@ -5187,6 +5187,7 @@ void intel_ddi_init(struct drm_i915_private *dev_priv, enum port port)
 	encoder->sync_state = intel_ddi_sync_state;
 	encoder->initial_fastset_check = intel_ddi_initial_fastset_check;
 	encoder->suspend = intel_dp_encoder_suspend;
+	encoder->shutdown = intel_dp_encoder_shutdown;
 	encoder->get_power_domains = intel_ddi_get_power_domains;
 
 	encoder->type = INTEL_OUTPUT_DDI;

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

@@ -6752,7 +6752,7 @@ void intel_dp_encoder_suspend(struct intel_encoder *intel_encoder)
 		edp_panel_vdd_off_sync(intel_dp);
 }
 
-static void intel_dp_encoder_shutdown(struct intel_encoder *intel_encoder)
+void intel_dp_encoder_shutdown(struct intel_encoder *intel_encoder)
 {
 	struct intel_dp *intel_dp = enc_to_intel_dp(intel_encoder);
 	intel_wakeref_t wakeref;
@@ -8098,8 +8098,7 @@ bool intel_dp_init(struct drm_i915_private *dev_priv,
 	intel_encoder->initial_fastset_check = intel_dp_initial_fastset_check;
 	intel_encoder->update_pipe = intel_panel_update_backlight;
 	intel_encoder->suspend = intel_dp_encoder_suspend;
-	if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv))
-		intel_encoder->shutdown = intel_dp_encoder_shutdown;
+	intel_encoder->shutdown = intel_dp_encoder_shutdown;
 	if (IS_CHERRYVIEW(dev_priv)) {
 		intel_encoder->pre_pll_enable = chv_dp_pre_pll_enable;
 		intel_encoder->pre_enable = chv_pre_enable_dp;

drivers/gpu/drm/i915/display/intel_dp.h

@@ -57,6 +57,7 @@ void intel_dp_sink_set_decompression_state(struct intel_dp *intel_dp,
 					   bool enable);
 void intel_dp_encoder_reset(struct drm_encoder *encoder);
 void intel_dp_encoder_suspend(struct intel_encoder *intel_encoder);
+void intel_dp_encoder_shutdown(struct intel_encoder *intel_encoder);
 void intel_dp_encoder_flush_work(struct drm_encoder *encoder);
 int intel_dp_compute_config(struct intel_encoder *encoder,
 			    struct intel_crtc_state *pipe_config,