Merge remote-tracking branch 'drm-intel/drm-intel-fixes' into drm-tip

10 files changed, 111 insertions, 7 deletions

diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c
index 59f11af3b0a1..dc75a929d3ed 100644
--- a/drivers/gpu/drm/i915/display/intel_dp.c
+++ b/drivers/gpu/drm/i915/display/intel_dp.c
@@ -5935,6 +5935,18 @@ intel_dp_detect(struct drm_connector *connector,
 	else
 		status = connector_status_disconnected;
 
+	if (status != connector_status_disconnected &&
+	    !intel_dp_mst_verify_dpcd_state(intel_dp))
+		/*
+		 * This requires retrying detection for instance to re-enable
+		 * the MST mode that got reset via a long HPD pulse. The retry
+		 * will happen either via the hotplug handler's retry logic,
+		 * ensured by setting the connector here to SST/disconnected,
+		 * or via a userspace connector probing in response to the
+		 * hotplug uevent sent when removing the MST connectors.
+		 */
+		status = connector_status_disconnected;
+
 	if (status == connector_status_disconnected) {
 		memset(&intel_dp->compliance, 0, sizeof(intel_dp->compliance));
 		memset(intel_connector->dp.dsc_dpcd, 0, sizeof(intel_connector->dp.dsc_dpcd));
diff --git a/drivers/gpu/drm/i915/display/intel_dp_mst.c b/drivers/gpu/drm/i915/display/intel_dp_mst.c
index 27ce5c3f5951..17978a1f9ab0 100644
--- a/drivers/gpu/drm/i915/display/intel_dp_mst.c
+++ b/drivers/gpu/drm/i915/display/intel_dp_mst.c
@@ -1998,3 +1998,43 @@ bool intel_dp_mst_crtc_needs_modeset(struct intel_atomic_state *state,
 
 	return false;
 }
+
+/*
+ * intel_dp_mst_verify_dpcd_state - verify the MST SW enabled state wrt. the DPCD
+ * @intel_dp: DP port object
+ *
+ * Verify if @intel_dp's MST enabled SW state matches the corresponding DPCD
+ * state. A long HPD pulse - not long enough to be detected as a disconnected
+ * state - could've reset the DPCD state, which requires tearing
+ * down/recreating the MST topology.
+ *
+ * Returns %true if the SW MST enabled and DPCD states match, %false
+ * otherwise.
+ */
+bool intel_dp_mst_verify_dpcd_state(struct intel_dp *intel_dp)
+{
+	struct intel_display *display = to_intel_display(intel_dp);
+	struct intel_connector *connector = intel_dp->attached_connector;
+	struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp);
+	struct intel_encoder *encoder = &dig_port->base;
+	int ret;
+	u8 val;
+
+	if (!intel_dp->is_mst)
+		return true;
+
+	ret = drm_dp_dpcd_readb(intel_dp->mst_mgr.aux, DP_MSTM_CTRL, &val);
+
+	/* Adjust the expected register value for SST + SideBand. */
+	if (ret < 0 || val != (DP_MST_EN | DP_UP_REQ_EN | DP_UPSTREAM_IS_SRC)) {
+		drm_dbg_kms(display->drm,
+			    "[CONNECTOR:%d:%s][ENCODER:%d:%s] MST mode got reset, removing topology (ret=%d, ctrl=0x%02x)\n",
+			    connector->base.base.id, connector->base.name,
+			    encoder->base.base.id, encoder->base.name,
+			    ret, val);
+
+		return false;
+	}
+
+	return true;
+}
diff --git a/drivers/gpu/drm/i915/display/intel_dp_mst.h b/drivers/gpu/drm/i915/display/intel_dp_mst.h
index 8ca1d599091c..9e4c7679f1c3 100644
--- a/drivers/gpu/drm/i915/display/intel_dp_mst.h
+++ b/drivers/gpu/drm/i915/display/intel_dp_mst.h
@@ -27,5 +27,6 @@ int intel_dp_mst_atomic_check_link(struct intel_atomic_state *state,
 				   struct intel_link_bw_limits *limits);
 bool intel_dp_mst_crtc_needs_modeset(struct intel_atomic_state *state,
 				     struct intel_crtc *crtc);
+bool intel_dp_mst_verify_dpcd_state(struct intel_dp *intel_dp);
 
 #endif /* __INTEL_DP_MST_H__ */
diff --git a/drivers/gpu/drm/i915/display/vlv_dsi.c b/drivers/gpu/drm/i915/display/vlv_dsi.c
index eae5b5e09aa8..931d2cf74ed8 100644
--- a/drivers/gpu/drm/i915/display/vlv_dsi.c
+++ b/drivers/gpu/drm/i915/display/vlv_dsi.c
@@ -1870,7 +1870,6 @@ static const struct dmi_system_id vlv_dsi_dmi_quirk_table[] = {
 		/* Lenovo Yoga Tab 3 Pro YT3-X90F */
 		.matches = {
 			DMI_MATCH(DMI_SYS_VENDOR, "Intel Corporation"),
-			DMI_MATCH(DMI_PRODUCT_NAME, "CHERRYVIEW D1 PLATFORM"),
 			DMI_MATCH(DMI_PRODUCT_VERSION, "Blade3-10A-001"),
 		},
 		.driver_data = (void *)vlv_dsi_lenovo_yoga_tab3_backlight_fixup,
diff --git a/drivers/gpu/drm/i915/gt/uc/intel_gsc_fw.c b/drivers/gpu/drm/i915/gt/uc/intel_gsc_fw.c
index 3b69bc6616bd..551b0d7974ff 100644
--- a/drivers/gpu/drm/i915/gt/uc/intel_gsc_fw.c
+++ b/drivers/gpu/drm/i915/gt/uc/intel_gsc_fw.c
@@ -212,6 +212,37 @@ int intel_gsc_fw_get_binary_info(struct intel_uc_fw *gsc_fw, const void *data, s
 		}
 	}
 
+	if (IS_ARROWLAKE(gt->i915)) {
+		bool too_old = false;
+
+		/*
+		 * ARL requires a newer firmware than MTL did (102.0.10.1878) but the
+		 * firmware is actually common. So, need to do an explicit version check
+		 * here rather than using a separate table entry. And if the older
+		 * MTL-only version is found, then just don't use GSC rather than aborting
+		 * the driver load.
+		 */
+		if (gsc->release.major < 102) {
+			too_old = true;
+		} else if (gsc->release.major == 102) {
+			if (gsc->release.minor == 0) {
+				if (gsc->release.patch < 10) {
+					too_old = true;
+				} else if (gsc->release.patch == 10) {
+					if (gsc->release.build < 1878)
+						too_old = true;
+				}
+			}
+		}
+
+		if (too_old) {
+			gt_info(gt, "GSC firmware too old for ARL, got %d.%d.%d.%d but need at least 102.0.10.1878",
+				gsc->release.major, gsc->release.minor,
+				gsc->release.patch, gsc->release.build);
+			return -EINVAL;
+		}
+	}
+
 	return 0;
 }
 
diff --git a/drivers/gpu/drm/i915/gt/uc/intel_uc_fw.c b/drivers/gpu/drm/i915/gt/uc/intel_uc_fw.c
index d80278eb45d7..ec33ad942115 100644
--- a/drivers/gpu/drm/i915/gt/uc/intel_uc_fw.c
+++ b/drivers/gpu/drm/i915/gt/uc/intel_uc_fw.c
@@ -698,12 +698,18 @@ static int check_gsc_manifest(struct intel_gt *gt,
 			      const struct firmware *fw,
 			      struct intel_uc_fw *uc_fw)
 {
+	int ret;
+
 	switch (uc_fw->type) {
 	case INTEL_UC_FW_TYPE_HUC:
-		intel_huc_fw_get_binary_info(uc_fw, fw->data, fw->size);
+		ret = intel_huc_fw_get_binary_info(uc_fw, fw->data, fw->size);
+		if (ret)
+			return ret;
 		break;
 	case INTEL_UC_FW_TYPE_GSC:
-		intel_gsc_fw_get_binary_info(uc_fw, fw->data, fw->size);
+		ret = intel_gsc_fw_get_binary_info(uc_fw, fw->data, fw->size);
+		if (ret)
+			return ret;
 		break;
 	default:
 		MISSING_CASE(uc_fw->type);
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index d7723dd11c80..110340e02a02 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -546,6 +546,8 @@ IS_SUBPLATFORM(const struct drm_i915_private *i915,
 #define IS_LUNARLAKE(i915) (0 && i915)
 #define IS_BATTLEMAGE(i915)  (0 && i915)
 
+#define IS_ARROWLAKE(i915) \
+	IS_SUBPLATFORM(i915, INTEL_METEORLAKE, INTEL_SUBPLATFORM_ARL)
 #define IS_DG2_G10(i915) \
 	IS_SUBPLATFORM(i915, INTEL_DG2, INTEL_SUBPLATFORM_G10)
 #define IS_DG2_G11(i915) \
diff --git a/drivers/gpu/drm/i915/intel_device_info.c b/drivers/gpu/drm/i915/intel_device_info.c
index d26de37719a7..eede5417cb3f 100644
--- a/drivers/gpu/drm/i915/intel_device_info.c
+++ b/drivers/gpu/drm/i915/intel_device_info.c
@@ -203,6 +203,10 @@ static const u16 subplatform_g12_ids[] = {
 	INTEL_DG2_G12_IDS(ID),
 };
 
+static const u16 subplatform_arl_ids[] = {
+	INTEL_ARL_IDS(ID),
+};
+
 static bool find_devid(u16 id, const u16 *p, unsigned int num)
 {
 	for (; num; num--, p++) {
@@ -260,6 +264,9 @@ static void intel_device_info_subplatform_init(struct drm_i915_private *i915)
 	} else if (find_devid(devid, subplatform_g12_ids,
 			      ARRAY_SIZE(subplatform_g12_ids))) {
 		mask = BIT(INTEL_SUBPLATFORM_G12);
+	} else if (find_devid(devid, subplatform_arl_ids,
+			      ARRAY_SIZE(subplatform_arl_ids))) {
+		mask = BIT(INTEL_SUBPLATFORM_ARL);
 	}
 
 	GEM_BUG_ON(mask & ~INTEL_SUBPLATFORM_MASK);
diff --git a/drivers/gpu/drm/i915/intel_device_info.h b/drivers/gpu/drm/i915/intel_device_info.h
index d1a2abc7e513..df73ef94615d 100644
--- a/drivers/gpu/drm/i915/intel_device_info.h
+++ b/drivers/gpu/drm/i915/intel_device_info.h
@@ -127,6 +127,9 @@ enum intel_platform {
 #define INTEL_SUBPLATFORM_N    1
 #define INTEL_SUBPLATFORM_RPLU  2
 
+/* MTL */
+#define INTEL_SUBPLATFORM_ARL	0
+
 enum intel_ppgtt_type {
 	INTEL_PPGTT_NONE = I915_GEM_PPGTT_NONE,
 	INTEL_PPGTT_ALIASING = I915_GEM_PPGTT_ALIASING,
diff --git a/include/drm/intel/i915_pciids.h b/include/drm/intel/i915_pciids.h
index b21374f76df2..2bf03ebfcf73 100644
--- a/include/drm/intel/i915_pciids.h
+++ b/include/drm/intel/i915_pciids.h
@@ -772,15 +772,18 @@
 	INTEL_ATS_M75_IDS(MACRO__, ## __VA_ARGS__)
 
 /* MTL */
+#define INTEL_ARL_IDS(MACRO__, ...) \
+	MACRO__(0x7D41, ## __VA_ARGS__), \
+	MACRO__(0x7D51, ## __VA_ARGS__), \
+	MACRO__(0x7D67, ## __VA_ARGS__), \
+	MACRO__(0x7DD1, ## __VA_ARGS__)
+
 #define INTEL_MTL_IDS(MACRO__, ...) \
+	INTEL_ARL_IDS(MACRO__, ## __VA_ARGS__), \
 	MACRO__(0x7D40, ## __VA_ARGS__), \
-	MACRO__(0x7D41, ## __VA_ARGS__), \
 	MACRO__(0x7D45, ## __VA_ARGS__), \
-	MACRO__(0x7D51, ## __VA_ARGS__), \
 	MACRO__(0x7D55, ## __VA_ARGS__), \
 	MACRO__(0x7D60, ## __VA_ARGS__), \
-	MACRO__(0x7D67, ## __VA_ARGS__), \
-	MACRO__(0x7DD1, ## __VA_ARGS__), \
 	MACRO__(0x7DD5, ## __VA_ARGS__)
 
 /* LNL */