[v3,16/20] drm/i915/psr: HW will not allow PR on eDP when HDCP enabled

Commit Message

Hogander, Jouni May 27, 2024, 7:22 a.m. UTC

Take into account in Panel Replay compute config that  HW will not allow PR
on eDP when HDCP enabled.

Signed-off-by: Jouni Högander <[e-mail]>
---
 drivers/gpu/drm/i915/display/intel_psr.c | 18 ++++++++++++++++--
 1 file changed, 16 insertions(+), 2 deletions(-)

Patch

diff --git a/drivers/gpu/drm/i915/display/intel_psr.c b/drivers/gpu/drm/i915/display/intel_psr.c
index ed2c23e8ce55..455ad13d9903 100644
--- a/drivers/gpu/drm/i915/display/intel_psr.c
+++ b/drivers/gpu/drm/i915/display/intel_psr.c
@@ -1711,8 +1711,13 @@  static bool _psr_compute_config(struct intel_dp *intel_dp,
 
 static bool
 _panel_replay_compute_config(struct intel_dp *intel_dp,
-			     const struct intel_crtc_state *crtc_state)
+			     const struct intel_crtc_state *crtc_state,
+			     const struct drm_connector_state *conn_state)
 {
+	struct intel_connector *connector =
+		to_intel_connector(conn_state->connector);
+	struct intel_hdcp *hdcp = &connector->hdcp;
+
 	if (!CAN_PANEL_REPLAY(intel_dp))
 		return false;
 
@@ -1725,6 +1730,14 @@  _panel_replay_compute_config(struct intel_dp *intel_dp,
 	if (intel_dp_is_uhbr(crtc_state))
 		return false;
 
+	/* HW will not allow Panel Replay on eDP when HDCP enabled */
+	if (conn_state->content_protection ==
+	    DRM_MODE_CONTENT_PROTECTION_DESIRED ||
+	    (conn_state->content_protection ==
+	     DRM_MODE_CONTENT_PROTECTION_ENABLED && hdcp->value ==
+	     DRM_MODE_CONTENT_PROTECTION_UNDESIRED))
+		return false;
+
 	return true;
 }
 
@@ -1764,7 +1777,8 @@  void intel_psr_compute_config(struct intel_dp *intel_dp,
 	}
 
 	crtc_state->has_panel_replay = _panel_replay_compute_config(intel_dp,
-								    crtc_state);
+								    crtc_state,
+								    conn_state);
 
 	crtc_state->has_psr = crtc_state->has_panel_replay ? true :
 		_psr_compute_config(intel_dp, crtc_state);