[PATCH 2/4] drm/i915: DDI: call intel_psr_enable() on encoder updates

[Hans de Goede]

Call intel_psr_enable() on encoder updates to make sure that we enable
PSR (when applicable) on fastsets.

Note calling intel_psr_enable() when PSR has already been enabled is a
no-op, so it is safe to do this on every encoder->update callback.

Signed-off-by: Hans de Goede <hdegoede at redhat.com>
---
 drivers/gpu/drm/i915/intel_ddi.c | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/drivers/gpu/drm/i915/intel_ddi.c b/drivers/gpu/drm/i915/intel_ddi.c
index e3cc19e19199..30f54c334dd7 100644
--- a/drivers/gpu/drm/i915/intel_ddi.c
+++ b/drivers/gpu/drm/i915/intel_ddi.c
@@ -3537,6 +3537,23 @@ static void intel_disable_ddi(struct intel_encoder *encoder,
 		intel_disable_ddi_dp(encoder, old_crtc_state, old_conn_state);
 }
 
+static void intel_update_ddi_dp(struct intel_encoder *encoder,
+				const struct intel_crtc_state *crtc_state,
+				const struct drm_connector_state *conn_state)
+{
+	struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base);
+
+	intel_psr_enable(intel_dp, crtc_state);
+}
+
+static void intel_update_ddi(struct intel_encoder *encoder,
+			     const struct intel_crtc_state *crtc_state,
+			     const struct drm_connector_state *conn_state)
+{
+	if (!intel_crtc_has_type(crtc_state, INTEL_OUTPUT_HDMI))
+		intel_update_ddi_dp(encoder, crtc_state, conn_state);
+}
+
 static void intel_ddi_set_fia_lane_count(struct intel_encoder *encoder,
 					 const struct intel_crtc_state *pipe_config,
 					 enum port port)
@@ -4169,6 +4186,7 @@ void intel_ddi_init(struct drm_i915_private *dev_priv, enum port port)
 	intel_encoder->pre_enable = intel_ddi_pre_enable;
 	intel_encoder->disable = intel_disable_ddi;
 	intel_encoder->post_disable = intel_ddi_post_disable;
+	intel_encoder->update = intel_update_ddi;
 	intel_encoder->get_hw_state = intel_ddi_get_hw_state;
 	intel_encoder->get_config = intel_ddi_get_config;
 	intel_encoder->suspend = intel_ddi_encoder_suspend;
-- 
2.20.1