4 files changed, 54 insertions, 22 deletions

diff --git a/drivers/gpu/drm/i915/display/intel_audio.c b/drivers/gpu/drm/i915/display/intel_audio.c
index c6b251f178c2..ce8a4319a63c 100644
--- a/drivers/gpu/drm/i915/display/intel_audio.c
+++ b/drivers/gpu/drm/i915/display/intel_audio.c
@@ -698,10 +698,12 @@ bool intel_audio_compute_config(struct intel_encoder *encoder,
 	const struct drm_display_mode *adjusted_mode =
 		&crtc_state->hw.adjusted_mode;
 
+	mutex_lock(&connector->eld_mutex);
 	if (!connector->eld[0]) {
 		drm_dbg_kms(&i915->drm,
 			    "Bogus ELD on [CONNECTOR:%d:%s]\n",
 			    connector->base.id, connector->name);
+		mutex_unlock(&connector->eld_mutex);
 		return false;
 	}
 
@@ -709,6 +711,7 @@ bool intel_audio_compute_config(struct intel_encoder *encoder,
 	memcpy(crtc_state->eld, connector->eld, sizeof(crtc_state->eld));
 
 	crtc_state->eld[6] = drm_av_sync_delay(connector, adjusted_mode) / 2;
+	mutex_unlock(&connector->eld_mutex);
 
 	return true;
 }
diff --git a/drivers/gpu/drm/i915/display/intel_cx0_phy_regs.h b/drivers/gpu/drm/i915/display/intel_cx0_phy_regs.h
index 87d52b309608..4dc6e179a774 100644
--- a/drivers/gpu/drm/i915/display/intel_cx0_phy_regs.h
+++ b/drivers/gpu/drm/i915/display/intel_cx0_phy_regs.h
@@ -205,6 +205,13 @@
 #define   XELPDP_SSC_ENABLE_PLLA			REG_BIT(1)
 #define   XELPDP_SSC_ENABLE_PLLB			REG_BIT(0)
 
+#define TCSS_DISP_MAILBOX_IN_CMD		_MMIO(0x161300)
+#define   TCSS_DISP_MAILBOX_IN_CMD_RUN_BUSY	REG_BIT(31)
+#define   TCSS_DISP_MAILBOX_IN_CMD_CMD_MASK	REG_GENMASK(7, 0)
+#define   TCSS_DISP_MAILBOX_IN_CMD_DATA(val)	REG_FIELD_PREP(TCSS_DISP_MAILBOX_IN_CMD_CMD_MASK, val)
+
+#define TCSS_DISP_MAILBOX_IN_DATA		_MMIO(0x161304)
+
 /* C10 Vendor Registers */
 #define PHY_C10_VDR_PLL(idx)		(0xC00 + (idx))
 #define   C10_PLL0_FRACEN		REG_BIT8(4)
diff --git a/drivers/gpu/drm/i915/display/intel_dp_mst.c b/drivers/gpu/drm/i915/display/intel_dp_mst.c
index 7d9a164a7556..0433f2ff77e1 100644
--- a/drivers/gpu/drm/i915/display/intel_dp_mst.c
+++ b/drivers/gpu/drm/i915/display/intel_dp_mst.c
@@ -1695,6 +1695,8 @@ mst_topology_add_connector(struct drm_dp_mst_topology_mgr *mgr,
 	if (!intel_connector)
 		return NULL;
 
+	connector = &intel_connector->base;
+
 	intel_connector->get_hw_state = mst_connector_get_hw_state;
 	intel_connector->sync_state = intel_dp_connector_sync_state;
 	intel_connector->mst_port = intel_dp;
@@ -1703,30 +1705,19 @@ mst_topology_add_connector(struct drm_dp_mst_topology_mgr *mgr,
 
 	intel_dp_init_modeset_retry_work(intel_connector);
 
-	/*
-	 * TODO: The following drm_connector specific initialization belongs
-	 * to DRM core, however it happens atm too late in
-	 * drm_connector_init(). That function will also expose the connector
-	 * to in-kernel users, so it can't be called until the connector is
-	 * sufficiently initialized; init the device pointer used by the
-	 * following DSC setup, until a fix moving this to DRM core.
-	 */
-	intel_connector->base.dev = mgr->dev;
-
-	intel_connector->dp.dsc_decompression_aux = drm_dp_mst_dsc_aux_for_port(port);
-	intel_dp_mst_read_decompression_port_dsc_caps(intel_dp, intel_connector);
-	intel_connector->dp.dsc_hblank_expansion_quirk =
-		detect_dsc_hblank_expansion_quirk(intel_connector);
-
-	connector = &intel_connector->base;
-	ret = drm_connector_init(display->drm, connector, &mst_connector_funcs,
-				 DRM_MODE_CONNECTOR_DisplayPort);
+	ret = drm_connector_dynamic_init(display->drm, connector, &mst_connector_funcs,
+					 DRM_MODE_CONNECTOR_DisplayPort, NULL);
 	if (ret) {
 		drm_dp_mst_put_port_malloc(port);
 		intel_connector_free(intel_connector);
 		return NULL;
 	}
 
+	intel_connector->dp.dsc_decompression_aux = drm_dp_mst_dsc_aux_for_port(port);
+	intel_dp_mst_read_decompression_port_dsc_caps(intel_dp, intel_connector);
+	intel_connector->dp.dsc_hblank_expansion_quirk =
+		detect_dsc_hblank_expansion_quirk(intel_connector);
+
 	drm_connector_helper_add(connector, &mst_connector_helper_funcs);
 
 	for_each_pipe(display, pipe) {
diff --git a/drivers/gpu/drm/i915/display/intel_tc.c b/drivers/gpu/drm/i915/display/intel_tc.c
index 0e4d78b146f6..13811244c82b 100644
--- a/drivers/gpu/drm/i915/display/intel_tc.c
+++ b/drivers/gpu/drm/i915/display/intel_tc.c
@@ -1013,21 +1013,52 @@ xelpdp_tc_phy_wait_for_tcss_power(struct intel_tc_port *tc, bool enabled)
 	return true;
 }
 
+/*
+ * Gfx driver WA 14020908590 for PTL tcss_rxdetect_clkswb_req/ack
+ * handshake violation when pwwreq= 0->1 during TC7/10 entry
+ */
+static void xelpdp_tc_power_request_wa(struct intel_display *display, bool enable)
+{
+	/* check if mailbox is running busy */
+	if (intel_de_wait_for_clear(display, TCSS_DISP_MAILBOX_IN_CMD,
+				    TCSS_DISP_MAILBOX_IN_CMD_RUN_BUSY, 10)) {
+		drm_dbg_kms(display->drm,
+			    "Timeout waiting for TCSS mailbox run/busy bit to clear\n");
+		return;
+	}
+
+	intel_de_write(display, TCSS_DISP_MAILBOX_IN_DATA, enable ? 1 : 0);
+	intel_de_write(display, TCSS_DISP_MAILBOX_IN_CMD,
+		       TCSS_DISP_MAILBOX_IN_CMD_RUN_BUSY |
+		       TCSS_DISP_MAILBOX_IN_CMD_DATA(0x1));
+
+	/* wait to clear mailbox running busy bit before continuing */
+	if (intel_de_wait_for_clear(display, TCSS_DISP_MAILBOX_IN_CMD,
+				    TCSS_DISP_MAILBOX_IN_CMD_RUN_BUSY, 10)) {
+		drm_dbg_kms(display->drm,
+			    "Timeout after writing data to mailbox. Mailbox run/busy bit did not clear\n");
+		return;
+	}
+}
+
 static void __xelpdp_tc_phy_enable_tcss_power(struct intel_tc_port *tc, bool enable)
 {
-	struct drm_i915_private *i915 = tc_to_i915(tc);
+	struct intel_display *display = to_intel_display(tc->dig_port);
 	enum port port = tc->dig_port->base.port;
-	i915_reg_t reg = XELPDP_PORT_BUF_CTL1(i915, port);
+	i915_reg_t reg = XELPDP_PORT_BUF_CTL1(display, port);
 	u32 val;
 
 	assert_tc_cold_blocked(tc);
 
-	val = intel_de_read(i915, reg);
+	if (DISPLAY_VER(display) == 30)
+		xelpdp_tc_power_request_wa(display, enable);
+
+	val = intel_de_read(display, reg);
 	if (enable)
 		val |= XELPDP_TCSS_POWER_REQUEST;
 	else
 		val &= ~XELPDP_TCSS_POWER_REQUEST;
-	intel_de_write(i915, reg, val);
+	intel_de_write(display, reg, val);
 }
 
 static bool xelpdp_tc_phy_enable_tcss_power(struct intel_tc_port *tc, bool enable)