[PATCH 03/11] drm/i915/psr: Unify panel replay enable sink

[Jouni Högander]

Panel replay enable for a sink is currently done in
intel_ddi.c:intel_ddi_pre_enable_dp. Move it to intel_psr_enable_sink to
unify psr/panel replay paths. Also enable some additional hpd interrupts
for panel replay.

Signed-off-by: Jouni Högander <jouni.hogander at intel.com>
---
 drivers/gpu/drm/i915/display/intel_ddi.c |  7 +-----
 drivers/gpu/drm/i915/display/intel_psr.c | 31 +++++++++++++++++-------
 2 files changed, 23 insertions(+), 15 deletions(-)

diff --git a/drivers/gpu/drm/i915/display/intel_ddi.c b/drivers/gpu/drm/i915/display/intel_ddi.c
index 2746655bcb26..e5ad3ace7678 100644
--- a/drivers/gpu/drm/i915/display/intel_ddi.c
+++ b/drivers/gpu/drm/i915/display/intel_ddi.c
@@ -2800,15 +2800,10 @@ static void intel_ddi_pre_enable_dp(struct intel_atomic_state *state,
 				    const struct drm_connector_state *conn_state)
 {
 	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
-	struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
 
-	if (HAS_DP20(dev_priv)) {
+	if (HAS_DP20(dev_priv))
 		intel_dp_128b132b_sdp_crc16(enc_to_intel_dp(encoder),
 					    crtc_state);
-		if (crtc_state->has_panel_replay)
-			drm_dp_dpcd_writeb(&intel_dp->aux, PANEL_REPLAY_CONFIG,
-					   DP_PANEL_REPLAY_ENABLE);
-	}
 
 	if (DISPLAY_VER(dev_priv) >= 14)
 		mtl_ddi_pre_enable_dp(state, encoder, crtc_state, conn_state);
diff --git a/drivers/gpu/drm/i915/display/intel_psr.c b/drivers/gpu/drm/i915/display/intel_psr.c
index 35cef210ff2f..6bdd202ad882 100644
--- a/drivers/gpu/drm/i915/display/intel_psr.c
+++ b/drivers/gpu/drm/i915/display/intel_psr.c
@@ -606,22 +606,30 @@ static void hsw_psr_setup_aux(struct intel_dp *intel_dp)
 		       aux_ctl);
 }
 
+static unsigned int intel_psr_get_enable_sink_offset(struct intel_dp *intel_dp)
+{
+	return intel_dp->psr.panel_replay_enabled ?
+		PANEL_REPLAY_CONFIG : DP_PSR_EN_CFG;
+}
+
+/*
+ * Note: Most of the bits are same in PANEL_REPLAY_CONFIG and DP_PSR_EN_CFG. We
+ * are relying on PSR definitions on these "common" bits.
+ */
 static void intel_psr_enable_sink(struct intel_dp *intel_dp)
 {
 	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
 	u8 dpcd_val = DP_PSR_ENABLE;
 
-	if (intel_dp->psr.panel_replay_enabled)
-		return;
-
 	if (intel_dp->psr.psr2_enabled) {
 		/* Enable ALPM at sink for psr2 */
-		drm_dp_dpcd_writeb(&intel_dp->aux, DP_RECEIVER_ALPM_CONFIG,
-				   DP_ALPM_ENABLE |
-				   DP_ALPM_LOCK_ERROR_IRQ_HPD_ENABLE);
+		if (intel_dp_is_edp(intel_dp))
+			drm_dp_dpcd_writeb(&intel_dp->aux, DP_RECEIVER_ALPM_CONFIG,
+					   DP_ALPM_ENABLE |
+					   DP_ALPM_LOCK_ERROR_IRQ_HPD_ENABLE);
 
 		dpcd_val |= DP_PSR_ENABLE_PSR2 | DP_PSR_IRQ_HPD_WITH_CRC_ERRORS;
-	} else {
+	} else if (!intel_dp->psr.panel_replay_enabled) {
 		if (intel_dp->psr.link_standby)
 			dpcd_val |= DP_PSR_MAIN_LINK_ACTIVE;
 
@@ -629,15 +637,20 @@ static void intel_psr_enable_sink(struct intel_dp *intel_dp)
 			dpcd_val |= DP_PSR_CRC_VERIFICATION;
 	}
 
+	if (intel_dp->psr.panel_replay_enabled)
+		dpcd_val |= DP_PANEL_REPLAY_UNRECOVERABLE_ERROR_EN |
+			DP_PANEL_REPLAY_RFB_STORAGE_ERROR_EN;
+
 	if (intel_dp->psr.req_psr2_sdp_prior_scanline)
 		dpcd_val |= DP_PSR_SU_REGION_SCANLINE_CAPTURE;
 
 	if (intel_dp->psr.entry_setup_frames > 0)
 		dpcd_val |= DP_PSR_FRAME_CAPTURE;
 
-	drm_dp_dpcd_writeb(&intel_dp->aux, DP_PSR_EN_CFG, dpcd_val);
+	drm_dp_dpcd_writeb(&intel_dp->aux, intel_psr_get_enable_sink_offset(intel_dp), dpcd_val);
 
-	drm_dp_dpcd_writeb(&intel_dp->aux, DP_SET_POWER, DP_SET_POWER_D0);
+	if (intel_dp_is_edp(intel_dp))
+		drm_dp_dpcd_writeb(&intel_dp->aux, DP_SET_POWER, DP_SET_POWER_D0);
 }
 
 static u32 intel_psr1_get_tp_time(struct intel_dp *intel_dp)
-- 
2.34.1