Merge Intel DTS IOSF thermal driver changes for 6.6-rc1.

These fix a few issues in the Intel DTS IOSF thermal driver, clean up
code in it and make it use trip point tables for registering thermal
zones.

* thermal-intel:
  thermal: intel: intel_soc_dts_iosf: Use struct thermal_trip
  thermal: intel: intel_soc_dts_iosf: Rework critical trip setup
  thermal: intel: intel_soc_dts_iosf: Add helper for resetting trip points
  thermal: intel: intel_soc_dts_iosf: Change initialization ordering
  thermal: intel: intel_soc_dts_iosf: Pass sensors to update_trip_temp()
  thermal: intel: intel_soc_dts_iosf: Untangle update_trip_temp()
  thermal: intel: intel_soc_dts_iosf: Always assume notification support
  thermal: intel: intel_soc_dts_iosf: Drop redundant symbol definition
  thermal: intel: intel_soc_dts_iosf: Always use 2 trips

Author: rafaeljw

drivers/thermal/intel/int340x_thermal/processor_thermal_device_pci_legacy.c

@@ -59,7 +59,7 @@ static int proc_thermal_pci_probe(struct pci_dev *pdev,
 		 * ACPI/MSR. So we don't want to fail for auxiliary DTSs.
 		 */
 		proc_priv->soc_dts = intel_soc_dts_iosf_init(
-					INTEL_SOC_DTS_INTERRUPT_MSI, 2, 0);
+					INTEL_SOC_DTS_INTERRUPT_MSI, false, 0);
 
 		if (!IS_ERR(proc_priv->soc_dts) && pdev->irq) {
 			ret = pci_enable_msi(pdev);

drivers/thermal/intel/intel_soc_dts_iosf.c

@@ -37,44 +37,11 @@
 /* DTS encoding for TJ MAX temperature */
 #define SOC_DTS_TJMAX_ENCODING		0x7F
 
-/* Only 2 out of 4 is allowed for OSPM */
-#define SOC_MAX_DTS_TRIPS		2
-
 /* Mask for two trips in status bits */
 #define SOC_DTS_TRIP_MASK		0x03
 
-/* DTS0 and DTS 1 */
-#define SOC_MAX_DTS_SENSORS		2
-
-static int sys_get_trip_temp(struct thermal_zone_device *tzd, int trip,
-			     int *temp)
-{
-	int status;
-	u32 out;
-	struct intel_soc_dts_sensor_entry *dts;
-	struct intel_soc_dts_sensors *sensors;
-
-	dts = thermal_zone_device_priv(tzd);
-	sensors = dts->sensors;
-	mutex_lock(&sensors->dts_update_lock);
-	status = iosf_mbi_read(BT_MBI_UNIT_PMC, MBI_REG_READ,
-			       SOC_DTS_OFFSET_PTPS, &out);
-	mutex_unlock(&sensors->dts_update_lock);
-	if (status)
-		return status;
-
-	out = (out >> (trip * 8)) & SOC_DTS_TJMAX_ENCODING;
-	if (!out)
-		*temp = 0;
-	else
-		*temp = sensors->tj_max - out * 1000;
-
-	return 0;
-}
-
-static int update_trip_temp(struct intel_soc_dts_sensor_entry *dts,
-			    int thres_index, int temp,
-			    enum thermal_trip_type trip_type)
+static int update_trip_temp(struct intel_soc_dts_sensors *sensors,
+			    int thres_index, int temp)
 {
 	int status;
 	u32 temp_out;
@@ -85,7 +52,6 @@ static int update_trip_temp(struct intel_soc_dts_sensor_entry *dts,
 	u32 store_te_out;
 	u32 te_out;
 	u32 int_enable_bit = SOC_DTS_TE_APICA_ENABLE;
-	struct intel_soc_dts_sensors *sensors = dts->sensors;
 
 	if (sensors->intr_type == INTEL_SOC_DTS_INTERRUPT_MSI)
 		int_enable_bit |= SOC_DTS_TE_MSI_ENABLE;
@@ -148,8 +114,6 @@ static int update_trip_temp(struct intel_soc_dts_sensor_entry *dts,
 	if (status)
 		goto err_restore_te_out;
 
-	dts->trip_types[thres_index] = trip_type;
-
 	return 0;
 err_restore_te_out:
 	iosf_mbi_write(BT_MBI_UNIT_PMC, MBI_REG_WRITE,
@@ -165,6 +129,22 @@ static int update_trip_temp(struct intel_soc_dts_sensor_entry *dts,
 	return status;
 }
 
+static int configure_trip(struct intel_soc_dts_sensor_entry *dts,
+			  int thres_index, enum thermal_trip_type trip_type,
+			  int temp)
+{
+	int ret;
+
+	ret = update_trip_temp(dts->sensors, thres_index, temp);
+	if (ret)
+		return ret;
+
+	dts->trips[thres_index].temperature = temp;
+	dts->trips[thres_index].type = trip_type;
+
+	return 0;
+}
+
 static int sys_set_trip_temp(struct thermal_zone_device *tzd, int trip,
 			     int temp)
 {
@@ -176,23 +156,12 @@ static int sys_set_trip_temp(struct thermal_zone_device *tzd, int trip,
 		return -EINVAL;
 
 	mutex_lock(&sensors->dts_update_lock);
-	status = update_trip_temp(dts, trip, temp,
-				  dts->trip_types[trip]);
+	status = update_trip_temp(sensors, trip, temp);
 	mutex_unlock(&sensors->dts_update_lock);
 
 	return status;
 }
 
-static int sys_get_trip_type(struct thermal_zone_device *tzd,
-			     int trip, enum thermal_trip_type *type)
-{
-	struct intel_soc_dts_sensor_entry *dts = thermal_zone_device_priv(tzd);
-
-	*type = dts->trip_types[trip];
-
-	return 0;
-}
-
 static int sys_get_curr_temp(struct thermal_zone_device *tzd,
 			     int *temp)
 {
@@ -217,8 +186,6 @@ static int sys_get_curr_temp(struct thermal_zone_device *tzd,
 
 static struct thermal_zone_device_ops tzone_ops = {
 	.get_temp = sys_get_curr_temp,
-	.get_trip_temp = sys_get_trip_temp,
-	.get_trip_type = sys_get_trip_type,
 	.set_trip_temp = sys_set_trip_temp,
 };
 
@@ -253,14 +220,12 @@ static void remove_dts_thermal_zone(struct intel_soc_dts_sensor_entry *dts)
 }
 
 static int add_dts_thermal_zone(int id, struct intel_soc_dts_sensor_entry *dts,
-				bool notification_support, int trip_cnt,
-				int read_only_trip_cnt)
+				bool critical_trip)
 {
+	int writable_trip_cnt = SOC_MAX_DTS_TRIPS;
 	char name[10];
 	unsigned long trip;
-	int trip_count = 0;
-	int trip_mask = 0;
-	int writable_trip_cnt = 0;
+	int trip_mask;
 	unsigned long ptps;
 	u32 store_ptps;
 	unsigned long i;
@@ -273,11 +238,11 @@ static int add_dts_thermal_zone(int id, struct intel_soc_dts_sensor_entry *dts,
 		goto err_ret;
 
 	dts->id = id;
-	if (notification_support) {
-		trip_count = min(SOC_MAX_DTS_TRIPS, trip_cnt);
-		writable_trip_cnt = trip_count - read_only_trip_cnt;
-		trip_mask = GENMASK(writable_trip_cnt - 1, 0);
-	}
+
+	if (critical_trip)
+		writable_trip_cnt--;
+
+	trip_mask = GENMASK(writable_trip_cnt - 1, 0);
 
 	/* Check if the writable trip we provide is not used by BIOS */
 	ret = iosf_mbi_read(BT_MBI_UNIT_PMC, MBI_REG_READ,
@@ -290,13 +255,12 @@ static int add_dts_thermal_zone(int id, struct intel_soc_dts_sensor_entry *dts,
 			trip_mask &= ~BIT(i / 8);
 	}
 	dts->trip_mask = trip_mask;
-	dts->trip_count = trip_count;
 	snprintf(name, sizeof(name), "soc_dts%d", id);
-	dts->tzone = thermal_zone_device_register(name,
-						  trip_count,
-						  trip_mask,
-						  dts, &tzone_ops,
-						  NULL, 0, 0);
+	dts->tzone = thermal_zone_device_register_with_trips(name, dts->trips,
+							     SOC_MAX_DTS_TRIPS,
+							     trip_mask,
+							     dts, &tzone_ops,
+							     NULL, 0, 0);
 	if (IS_ERR(dts->tzone)) {
 		ret = PTR_ERR(dts->tzone);
 		goto err_ret;
@@ -316,26 +280,6 @@ static int add_dts_thermal_zone(int id, struct intel_soc_dts_sensor_entry *dts,
 	return ret;
 }
 
-int intel_soc_dts_iosf_add_read_only_critical_trip(
-	struct intel_soc_dts_sensors *sensors, int critical_offset)
-{
-	int i, j;
-
-	for (i = 0; i < SOC_MAX_DTS_SENSORS; ++i) {
-		struct intel_soc_dts_sensor_entry *entry = &sensors->soc_dts[i];
-		int temp = sensors->tj_max - critical_offset;
-		unsigned long count = entry->trip_count;
-		unsigned long mask = entry->trip_mask;
-
-		j = find_first_zero_bit(&mask, count);
-		if (j < count)
-			return update_trip_temp(entry, j, temp, THERMAL_TRIP_CRITICAL);
-	}
-
-	return -EINVAL;
-}
-EXPORT_SYMBOL_GPL(intel_soc_dts_iosf_add_read_only_critical_trip);
-
 void intel_soc_dts_iosf_interrupt_handler(struct intel_soc_dts_sensors *sensors)
 {
 	u32 sticky_out;
@@ -371,22 +315,24 @@ void intel_soc_dts_iosf_interrupt_handler(struct intel_soc_dts_sensors *sensors)
 }
 EXPORT_SYMBOL_GPL(intel_soc_dts_iosf_interrupt_handler);
 
-struct intel_soc_dts_sensors *intel_soc_dts_iosf_init(
-	enum intel_soc_dts_interrupt_type intr_type, int trip_count,
-	int read_only_trip_count)
+static void dts_trips_reset(struct intel_soc_dts_sensors *sensors, int dts_index)
+{
+	configure_trip(&sensors->soc_dts[dts_index], 0, 0, 0);
+	configure_trip(&sensors->soc_dts[dts_index], 1, 0, 0);
+}
+
+struct intel_soc_dts_sensors *
+intel_soc_dts_iosf_init(enum intel_soc_dts_interrupt_type intr_type,
+			bool critical_trip, int crit_offset)
 {
 	struct intel_soc_dts_sensors *sensors;
-	bool notification;
 	int tj_max;
 	int ret;
 	int i;
 
 	if (!iosf_mbi_available())
 		return ERR_PTR(-ENODEV);
 
-	if (!trip_count || read_only_trip_count > trip_count)
-		return ERR_PTR(-EINVAL);
-
 	tj_max = intel_tcc_get_tjmax(-1);
 	if (tj_max < 0)
 		return ERR_PTR(tj_max);
@@ -399,37 +345,46 @@ struct intel_soc_dts_sensors *intel_soc_dts_iosf_init(
 	mutex_init(&sensors->dts_update_lock);
 	sensors->intr_type = intr_type;
 	sensors->tj_max = tj_max * 1000;
-	if (intr_type == INTEL_SOC_DTS_INTERRUPT_NONE)
-		notification = false;
-	else
-		notification = true;
+
 	for (i = 0; i < SOC_MAX_DTS_SENSORS; ++i) {
+		enum thermal_trip_type trip_type;
+		int temp;
+
 		sensors->soc_dts[i].sensors = sensors;
-		ret = add_dts_thermal_zone(i, &sensors->soc_dts[i],
-					   notification, trip_count,
-					   read_only_trip_count);
+
+		ret = configure_trip(&sensors->soc_dts[i], 0,
+				     THERMAL_TRIP_PASSIVE, 0);
 		if (ret)
-			goto err_free;
+			goto err_reset_trips;
+
+		if (critical_trip) {
+			trip_type = THERMAL_TRIP_CRITICAL;
+			temp = sensors->tj_max - crit_offset;
+		} else {
+			trip_type = THERMAL_TRIP_PASSIVE;
+			temp = 0;
+		}
+		ret = configure_trip(&sensors->soc_dts[i], 1, trip_type, temp);
+		if (ret)
+			goto err_reset_trips;
 	}
 
 	for (i = 0; i < SOC_MAX_DTS_SENSORS; ++i) {
-		ret = update_trip_temp(&sensors->soc_dts[i], 0, 0,
-				       THERMAL_TRIP_PASSIVE);
-		if (ret)
-			goto err_remove_zone;
-
-		ret = update_trip_temp(&sensors->soc_dts[i], 1, 0,
-				       THERMAL_TRIP_PASSIVE);
+		ret = add_dts_thermal_zone(i, &sensors->soc_dts[i], critical_trip);
 		if (ret)
 			goto err_remove_zone;
 	}
 
 	return sensors;
+
 err_remove_zone:
 	for (i = 0; i < SOC_MAX_DTS_SENSORS; ++i)
 		remove_dts_thermal_zone(&sensors->soc_dts[i]);
 
-err_free:
+err_reset_trips:
+	for (i = 0; i < SOC_MAX_DTS_SENSORS; i++)
+		dts_trips_reset(sensors, i);
+
 	kfree(sensors);
 	return ERR_PTR(ret);
 }
@@ -440,9 +395,8 @@ void intel_soc_dts_iosf_exit(struct intel_soc_dts_sensors *sensors)
 	int i;
 
 	for (i = 0; i < SOC_MAX_DTS_SENSORS; ++i) {
-		update_trip_temp(&sensors->soc_dts[i], 0, 0, 0);
-		update_trip_temp(&sensors->soc_dts[i], 1, 0, 0);
 		remove_dts_thermal_zone(&sensors->soc_dts[i]);
+		dts_trips_reset(sensors, i);
 	}
 	kfree(sensors);
 }

drivers/thermal/intel/intel_soc_dts_iosf.h

@@ -12,6 +12,9 @@
 /* DTS0 and DTS 1 */
 #define SOC_MAX_DTS_SENSORS	2
 
+/* Only 2 out of 4 is allowed for OSPM */
+#define SOC_MAX_DTS_TRIPS	2
+
 enum intel_soc_dts_interrupt_type {
 	INTEL_SOC_DTS_INTERRUPT_NONE,
 	INTEL_SOC_DTS_INTERRUPT_APIC,
@@ -26,8 +29,7 @@ struct intel_soc_dts_sensor_entry {
 	int id;
 	u32 store_status;
 	u32 trip_mask;
-	u32 trip_count;
-	enum thermal_trip_type trip_types[2];
+	struct thermal_trip trips[SOC_MAX_DTS_TRIPS];
 	struct thermal_zone_device *tzone;
 	struct intel_soc_dts_sensors *sensors;
 };
@@ -40,12 +42,11 @@ struct intel_soc_dts_sensors {
 	struct intel_soc_dts_sensor_entry soc_dts[SOC_MAX_DTS_SENSORS];
 };
 
-struct intel_soc_dts_sensors *intel_soc_dts_iosf_init(
-	enum intel_soc_dts_interrupt_type intr_type, int trip_count,
-	int read_only_trip_count);
+
+struct intel_soc_dts_sensors *
+intel_soc_dts_iosf_init(enum intel_soc_dts_interrupt_type intr_type,
+			bool critical_trip, int crit_offset);
 void intel_soc_dts_iosf_exit(struct intel_soc_dts_sensors *sensors);
 void intel_soc_dts_iosf_interrupt_handler(
 				struct intel_soc_dts_sensors *sensors);
-int intel_soc_dts_iosf_add_read_only_critical_trip(
-	struct intel_soc_dts_sensors *sensors, int critical_offset);
 #endif

drivers/thermal/intel/intel_soc_dts_thermal.c

@@ -51,7 +51,8 @@ static int __init intel_soc_thermal_init(void)
 		return -ENODEV;
 
 	/* Create a zone with 2 trips with marked as read only */
-	soc_dts = intel_soc_dts_iosf_init(INTEL_SOC_DTS_INTERRUPT_APIC, 2, 1);
+	soc_dts = intel_soc_dts_iosf_init(INTEL_SOC_DTS_INTERRUPT_APIC, true,
+					  crit_offset);
 	if (IS_ERR(soc_dts)) {
 		err = PTR_ERR(soc_dts);
 		return err;
@@ -88,21 +89,7 @@ static int __init intel_soc_thermal_init(void)
 		}
 	}
 
-	err = intel_soc_dts_iosf_add_read_only_critical_trip(soc_dts,
-							     crit_offset);
-	if (err)
-		goto error_trips;
-
 	return 0;
-
-error_trips:
-	if (soc_dts_thres_irq) {
-		free_irq(soc_dts_thres_irq, soc_dts);
-		acpi_unregister_gsi(soc_dts_thres_gsi);
-	}
-	intel_soc_dts_iosf_exit(soc_dts);
-
-	return err;
 }
 
 static void __exit intel_soc_thermal_exit(void)