[PATCH v3 09/20] drm/i915/psr: Panel replay has to be enabled before link training

[Jouni Högander]

Panel replay has to be enabled on sink side before link training. Take this
into account in fastset check and in initial fastset check.

Signed-off-by: Jouni Högander <jouni.hogander at intel.com>
---
 drivers/gpu/drm/i915/display/intel_display.c | 12 ++++++++++++
 drivers/gpu/drm/i915/display/intel_dp.c      |  8 ++++++++
 drivers/gpu/drm/i915/display/intel_psr.c     |  3 ---
 drivers/gpu/drm/i915/display/intel_psr.h     |  3 +++
 4 files changed, 23 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c
index a92e959c8ac7..b7e5b2774f2e 100644
--- a/drivers/gpu/drm/i915/display/intel_display.c
+++ b/drivers/gpu/drm/i915/display/intel_display.c
@@ -5214,6 +5214,18 @@ intel_pipe_config_compare(const struct intel_crtc_state *current_config,
 		PIPE_CONF_CHECK_CSC(output_csc);
 	}
 
+	/*
+	 * Panel replay has to be enabled before link training. PSR doesn't have
+	 * this requirement -> check these only if using panel replay
+	 */
+	if (current_config->has_panel_replay || pipe_config->has_panel_replay) {
+		PIPE_CONF_CHECK_BOOL(has_psr);
+		PIPE_CONF_CHECK_BOOL(has_psr2);
+		PIPE_CONF_CHECK_BOOL(enable_psr2_sel_fetch);
+		PIPE_CONF_CHECK_BOOL(enable_psr2_su_region_et);
+		PIPE_CONF_CHECK_BOOL(has_panel_replay);
+	}
+
 	PIPE_CONF_CHECK_BOOL(double_wide);
 
 	if (dev_priv->display.dpll.mgr) {
diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c
index e7cda3162ea2..11143fb9b0f0 100644
--- a/drivers/gpu/drm/i915/display/intel_dp.c
+++ b/drivers/gpu/drm/i915/display/intel_dp.c
@@ -3326,6 +3326,14 @@ bool intel_dp_initial_fastset_check(struct intel_encoder *encoder,
 		fastset = false;
 	}
 
+	if (CAN_PANEL_REPLAY(intel_dp)) {
+		drm_dbg_kms(&i915->drm,
+			    "[ENCODER:%d:%s] Forcing full modeset to compute panel replay state\n",
+			    encoder->base.base.id, encoder->base.name);
+		crtc_state->uapi.mode_changed = true;
+		fastset = false;
+	}
+
 	return fastset;
 }
 
diff --git a/drivers/gpu/drm/i915/display/intel_psr.c b/drivers/gpu/drm/i915/display/intel_psr.c
index 6d6343f6be23..d6cb9424af9d 100644
--- a/drivers/gpu/drm/i915/display/intel_psr.c
+++ b/drivers/gpu/drm/i915/display/intel_psr.c
@@ -192,9 +192,6 @@
 #define CAN_PSR(intel_dp) ((intel_dp)->psr.sink_support && \
 			   (intel_dp)->psr.source_support)
 
-#define CAN_PANEL_REPLAY(intel_dp) ((intel_dp)->psr.sink_panel_replay_support && \
-				    (intel_dp)->psr.source_panel_replay_support)
-
 bool intel_encoder_can_psr(struct intel_encoder *encoder)
 {
 	if (intel_encoder_is_dp(encoder) || encoder->type == INTEL_OUTPUT_DP_MST)
diff --git a/drivers/gpu/drm/i915/display/intel_psr.h b/drivers/gpu/drm/i915/display/intel_psr.h
index b74382b38f4a..e687d7bdbb1f 100644
--- a/drivers/gpu/drm/i915/display/intel_psr.h
+++ b/drivers/gpu/drm/i915/display/intel_psr.h
@@ -21,6 +21,9 @@ struct intel_encoder;
 struct intel_plane;
 struct intel_plane_state;
 
+#define CAN_PANEL_REPLAY(intel_dp) ((intel_dp)->psr.sink_panel_replay_support && \
+				    (intel_dp)->psr.source_panel_replay_support)
+
 bool intel_encoder_can_psr(struct intel_encoder *encoder);
 void intel_psr_init_dpcd(struct intel_dp *intel_dp);
 void intel_psr_enable_sink(struct intel_dp *intel_dp,
-- 
2.34.1