Merge tag 'thermal-v5.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/thermal/linux

Pull thermal updates from Daniel Lezcano:

 - Convert tsens configuration DT binding to yaml (Rajeshwari)

 - Add interrupt support on the rcar sensor (Niklas Söderlund)

 - Add a new Spreadtrum thermal driver (Baolin Wang)

 - Add thermal binding for the fsl scu board, a new API to retrieve the
   sensor id bound to the thermal zone and i.MX system controller sensor
   (Anson Huang))

 - Remove warning log when a deferred probe is requested on Exynos
   (Marek Szyprowski)

 - Add the thermal monitoring unit support for imx8mm with its DT
   bindings (Anson Huang)

 - Rephrase the Kconfig text for clarity (Linus Walleij)

 - Use the gpio descriptor for the ti-soc-thermal (Linus Walleij)

 - Align msg structure to 4 bytes for i.MX SC, fix the Kconfig
   dependency, add the __may_be unused annotation for PM functions and
   the COMPILE_TEST option for imx8mm (Anson Huang)

 - Fix a dependency on regmap in Kconfig for qoriq (Yuantian Tang)

 - Add DT binding and support for the rcar gen3 r8a77961 and improve the
   error path on the rcar init function (Niklas Söderlund)

 - Cleanup and improvements for the tsens Qcom sensor (Amit Kucheria)

 - Improve code by removing lock and caching values in the rcar thermal
   sensor (Niklas Söderlund)

 - Cleanup in the qoriq drivers and add a call to
   imx_thermal_unregister_legacy_cooling in the removal function (Anson
   Huang)

 - Remove redundant 'maxItems' in tsens and sprd DT bindings (Rob
   Herring)

 - Change the thermal DT bindings by making the cooling-maps optional
   (Yuantian Tang)

 - Add Tiger Lake support (Sumeet Pawnikar)

 - Use scnprintf() for avoiding potential buffer overflow (Takashi Iwai)

 - Make pkg_temp_lock a raw_spinlock_t(Clark Williams)

 - Fix incorrect data types by changing them to signed on i.MX SC (Anson
   Huang)

 - Replace zero-length array with flexible-array member (Gustavo A. R.
   Silva)

 - Add support for i.MX8MP in the driver and in the DT bindings (Anson
   Huang)

 - Fix return value of the cpufreq_set_cur_state() function (Willy
   Wolff)

 - Remove abusing and scary WARN_ON in the cpufreq cooling device
   (Daniel Lezcano)

 - Fix build warning of incorrect argument type reported by sparse on
   imx8mm (Anson Huang)

 - Fix stub for the devfreq cooling device (Martin Blumenstingl)

 - Fix cpu idle cooling documentation (Sergey Vidishev)

* tag 'thermal-v5.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/thermal/linux: (52 commits)
  Documentation: cpu-idle-cooling: Fix diagram for 33% duty cycle
  thermal: devfreq_cooling: inline all stubs for CONFIG_DEVFREQ_THERMAL=n
  thermal: imx8mm: Fix build warning of incorrect argument type
  thermal/drivers/cpufreq_cooling: Remove abusing WARN_ON
  thermal/drivers/cpufreq_cooling: Fix return of cpufreq_set_cur_state
  thermal: imx8mm: Add i.MX8MP support
  dt-bindings: thermal: imx8mm-thermal: Add support for i.MX8MP
  thermal: qcom: tsens.h: Replace zero-length array with flexible-array member
  thermal: imx_sc_thermal: Fix incorrect data type
  thermal: int340x_thermal: Use scnprintf() for avoiding potential buffer overflow
  thermal: int340x: processor_thermal: Add Tiger Lake support
  thermal/x86_pkg_temp: Make pkg_temp_lock a raw_spinlock_t
  dt-bindings: thermal: make cooling-maps property optional
  dt-bindings: thermal: qcom-tsens: Remove redundant 'maxItems'
  dt-bindings: thermal: sprd: Remove redundant 'maxItems'
  thermal: imx: Calling imx_thermal_unregister_legacy_cooling() in .remove
  thermal: qoriq: Sort includes alphabetically
  thermal: qoriq: Use devm_add_action_or_reset() to handle all cleanups
  thermal: rcar_thermal: Remove lock in rcar_thermal_get_current_temp()
  thermal: rcar_thermal: Do not store ctemp in rcar_thermal_priv
  ...

7 files changed, 332 insertions, 72 deletions

diff --git a/drivers/thermal/qcom/tsens-8960.c b/drivers/thermal/qcom/tsens-8960.c
index fb77acb8d13b..2a28a5af209e 100644
--- a/drivers/thermal/qcom/tsens-8960.c
+++ b/drivers/thermal/qcom/tsens-8960.c
@@ -245,7 +245,7 @@ static inline int code_to_mdegC(u32 adc_code, const struct tsens_sensor *s)
 	return adc_code * slope + offset;
 }
 
-static int get_temp_8960(struct tsens_sensor *s, int *temp)
+static int get_temp_8960(const struct tsens_sensor *s, int *temp)
 {
 	int ret;
 	u32 code, trdy;
@@ -279,7 +279,7 @@ static const struct tsens_ops ops_8960 = {
 	.resume		= resume_8960,
 };
 
-const struct tsens_plat_data data_8960 = {
+struct tsens_plat_data data_8960 = {
 	.num_sensors	= 11,
 	.ops		= &ops_8960,
 };
diff --git a/drivers/thermal/qcom/tsens-common.c b/drivers/thermal/qcom/tsens-common.c
index c8d57ee0a5bb..172545366636 100644
--- a/drivers/thermal/qcom/tsens-common.c
+++ b/drivers/thermal/qcom/tsens-common.c
@@ -23,6 +23,10 @@
  * @low_thresh:     lower threshold temperature value
  * @low_irq_mask:   mask register for lower threshold irqs
  * @low_irq_clear:  clear register for lower threshold irqs
+ * @crit_viol:      critical threshold violated
+ * @crit_thresh:    critical threshold temperature value
+ * @crit_irq_mask:  mask register for critical threshold irqs
+ * @crit_irq_clear: clear register for critical threshold irqs
  *
  * Structure containing data about temperature threshold settings and
  * irq status if they were violated.
@@ -36,6 +40,10 @@ struct tsens_irq_data {
 	int low_thresh;
 	u32 low_irq_mask;
 	u32 low_irq_clear;
+	u32 crit_viol;
+	u32 crit_thresh;
+	u32 crit_irq_mask;
+	u32 crit_irq_clear;
 };
 
 char *qfprom_read(struct device *dev, const char *cname)
@@ -128,7 +136,7 @@ static inline int code_to_degc(u32 adc_code, const struct tsens_sensor *s)
  * Return: Temperature in milliCelsius on success, a negative errno will
  * be returned in error cases
  */
-static int tsens_hw_to_mC(struct tsens_sensor *s, int field)
+static int tsens_hw_to_mC(const struct tsens_sensor *s, int field)
 {
 	struct tsens_priv *priv = s->priv;
 	u32 resolution;
@@ -160,7 +168,7 @@ static int tsens_hw_to_mC(struct tsens_sensor *s, int field)
  *
  * Return: ADC code or temperature in deciCelsius.
  */
-static int tsens_mC_to_hw(struct tsens_sensor *s, int temp)
+static int tsens_mC_to_hw(const struct tsens_sensor *s, int temp)
 {
 	struct tsens_priv *priv = s->priv;
 
@@ -189,6 +197,9 @@ static void tsens_set_interrupt_v1(struct tsens_priv *priv, u32 hw_id,
 	case LOWER:
 		index = LOW_INT_CLEAR_0 + hw_id;
 		break;
+	case CRITICAL:
+		/* No critical interrupts before v2 */
+		return;
 	}
 	regmap_field_write(priv->rf[index], enable ? 0 : 1);
 }
@@ -214,6 +225,10 @@ static void tsens_set_interrupt_v2(struct tsens_priv *priv, u32 hw_id,
 		index_mask  = LOW_INT_MASK_0 + hw_id;
 		index_clear = LOW_INT_CLEAR_0 + hw_id;
 		break;
+	case CRITICAL:
+		index_mask  = CRIT_INT_MASK_0 + hw_id;
+		index_clear = CRIT_INT_CLEAR_0 + hw_id;
+		break;
 	}
 
 	if (enable) {
@@ -268,14 +283,23 @@ static int tsens_threshold_violated(struct tsens_priv *priv, u32 hw_id,
 	ret = regmap_field_read(priv->rf[LOWER_STATUS_0 + hw_id], &d->low_viol);
 	if (ret)
 		return ret;
-	if (d->up_viol || d->low_viol)
+
+	if (priv->feat->crit_int) {
+		ret = regmap_field_read(priv->rf[CRITICAL_STATUS_0 + hw_id],
+					&d->crit_viol);
+		if (ret)
+			return ret;
+	}
+
+	if (d->up_viol || d->low_viol || d->crit_viol)
 		return 1;
 
 	return 0;
 }
 
 static int tsens_read_irq_state(struct tsens_priv *priv, u32 hw_id,
-				struct tsens_sensor *s, struct tsens_irq_data *d)
+				const struct tsens_sensor *s,
+				struct tsens_irq_data *d)
 {
 	int ret;
 
@@ -292,22 +316,37 @@ static int tsens_read_irq_state(struct tsens_priv *priv, u32 hw_id,
 		ret = regmap_field_read(priv->rf[LOW_INT_MASK_0 + hw_id], &d->low_irq_mask);
 		if (ret)
 			return ret;
+		ret = regmap_field_read(priv->rf[CRIT_INT_CLEAR_0 + hw_id],
+					&d->crit_irq_clear);
+		if (ret)
+			return ret;
+		ret = regmap_field_read(priv->rf[CRIT_INT_MASK_0 + hw_id],
+					&d->crit_irq_mask);
+		if (ret)
+			return ret;
+
+		d->crit_thresh = tsens_hw_to_mC(s, CRIT_THRESH_0 + hw_id);
 	} else {
 		/* No mask register on older TSENS */
 		d->up_irq_mask = 0;
 		d->low_irq_mask = 0;
+		d->crit_irq_clear = 0;
+		d->crit_irq_mask = 0;
+		d->crit_thresh = 0;
 	}
 
 	d->up_thresh  = tsens_hw_to_mC(s, UP_THRESH_0 + hw_id);
 	d->low_thresh = tsens_hw_to_mC(s, LOW_THRESH_0 + hw_id);
 
-	dev_dbg(priv->dev, "[%u] %s%s: status(%u|%u) | clr(%u|%u) | mask(%u|%u)\n",
-		hw_id, __func__, (d->up_viol || d->low_viol) ? "(V)" : "",
-		d->low_viol, d->up_viol, d->low_irq_clear, d->up_irq_clear,
-		d->low_irq_mask, d->up_irq_mask);
-	dev_dbg(priv->dev, "[%u] %s%s: thresh: (%d:%d)\n", hw_id, __func__,
-		(d->up_viol || d->low_viol) ? "(violation)" : "",
-		d->low_thresh, d->up_thresh);
+	dev_dbg(priv->dev, "[%u] %s%s: status(%u|%u|%u) | clr(%u|%u|%u) | mask(%u|%u|%u)\n",
+		hw_id, __func__,
+		(d->up_viol || d->low_viol || d->crit_viol) ? "(V)" : "",
+		d->low_viol, d->up_viol, d->crit_viol,
+		d->low_irq_clear, d->up_irq_clear, d->crit_irq_clear,
+		d->low_irq_mask, d->up_irq_mask, d->crit_irq_mask);
+	dev_dbg(priv->dev, "[%u] %s%s: thresh: (%d:%d:%d)\n", hw_id, __func__,
+		(d->up_viol || d->low_viol || d->crit_viol) ? "(V)" : "",
+		d->low_thresh, d->up_thresh, d->crit_thresh);
 
 	return 0;
 }
@@ -322,6 +361,76 @@ static inline u32 masked_irq(u32 hw_id, u32 mask, enum tsens_ver ver)
 }
 
 /**
+ * tsens_critical_irq_thread() - Threaded handler for critical interrupts
+ * @irq: irq number
+ * @data: tsens controller private data
+ *
+ * Check FSM watchdog bark status and clear if needed.
+ * Check all sensors to find ones that violated their critical threshold limits.
+ * Clear and then re-enable the interrupt.
+ *
+ * The level-triggered interrupt might deassert if the temperature returned to
+ * within the threshold limits by the time the handler got scheduled. We
+ * consider the irq to have been handled in that case.
+ *
+ * Return: IRQ_HANDLED
+ */
+irqreturn_t tsens_critical_irq_thread(int irq, void *data)
+{
+	struct tsens_priv *priv = data;
+	struct tsens_irq_data d;
+	int temp, ret, i;
+	u32 wdog_status, wdog_count;
+
+	if (priv->feat->has_watchdog) {
+		ret = regmap_field_read(priv->rf[WDOG_BARK_STATUS],
+					&wdog_status);
+		if (ret)
+			return ret;
+
+		if (wdog_status) {
+			/* Clear WDOG interrupt */
+			regmap_field_write(priv->rf[WDOG_BARK_CLEAR], 1);
+			regmap_field_write(priv->rf[WDOG_BARK_CLEAR], 0);
+			ret = regmap_field_read(priv->rf[WDOG_BARK_COUNT],
+						&wdog_count);
+			if (ret)
+				return ret;
+			if (wdog_count)
+				dev_dbg(priv->dev, "%s: watchdog count: %d\n",
+					__func__, wdog_count);
+
+			/* Fall through to handle critical interrupts if any */
+		}
+	}
+
+	for (i = 0; i < priv->num_sensors; i++) {
+		const struct tsens_sensor *s = &priv->sensor[i];
+		u32 hw_id = s->hw_id;
+
+		if (IS_ERR(s->tzd))
+			continue;
+		if (!tsens_threshold_violated(priv, hw_id, &d))
+			continue;
+		ret = get_temp_tsens_valid(s, &temp);
+		if (ret) {
+			dev_err(priv->dev, "[%u] %s: error reading sensor\n",
+				hw_id, __func__);
+			continue;
+		}
+
+		tsens_read_irq_state(priv, hw_id, s, &d);
+		if (d.crit_viol &&
+		    !masked_irq(hw_id, d.crit_irq_mask, tsens_version(priv))) {
+			/* Mask critical interrupts, unused on Linux */
+			tsens_set_interrupt(priv, hw_id, CRITICAL, false);
+		}
+	}
+
+	return IRQ_HANDLED;
+}
+
+/**
  * tsens_irq_thread - Threaded interrupt handler for uplow interrupts
  * @irq: irq number
  * @data: tsens controller private data
@@ -346,10 +455,10 @@ irqreturn_t tsens_irq_thread(int irq, void *data)
 
 	for (i = 0; i < priv->num_sensors; i++) {
 		bool trigger = false;
-		struct tsens_sensor *s = &priv->sensor[i];
+		const struct tsens_sensor *s = &priv->sensor[i];
 		u32 hw_id = s->hw_id;
 
-		if (IS_ERR(priv->sensor[i].tzd))
+		if (IS_ERR(s->tzd))
 			continue;
 		if (!tsens_threshold_violated(priv, hw_id, &d))
 			continue;
@@ -368,7 +477,7 @@ irqreturn_t tsens_irq_thread(int irq, void *data)
 			tsens_set_interrupt(priv, hw_id, UPPER, disable);
 			if (d.up_thresh > temp) {
 				dev_dbg(priv->dev, "[%u] %s: re-arm upper\n",
-					priv->sensor[i].hw_id, __func__);
+					hw_id, __func__);
 				tsens_set_interrupt(priv, hw_id, UPPER, enable);
 			} else {
 				trigger = true;
@@ -379,7 +488,7 @@ irqreturn_t tsens_irq_thread(int irq, void *data)
 			tsens_set_interrupt(priv, hw_id, LOWER, disable);
 			if (d.low_thresh < temp) {
 				dev_dbg(priv->dev, "[%u] %s: re-arm low\n",
-					priv->sensor[i].hw_id, __func__);
+					hw_id, __func__);
 				tsens_set_interrupt(priv, hw_id, LOWER, enable);
 			} else {
 				trigger = true;
@@ -392,7 +501,7 @@ irqreturn_t tsens_irq_thread(int irq, void *data)
 		if (trigger) {
 			dev_dbg(priv->dev, "[%u] %s: TZ update trigger (%d mC)\n",
 				hw_id, __func__, temp);
-			thermal_zone_device_update(priv->sensor[i].tzd,
+			thermal_zone_device_update(s->tzd,
 						   THERMAL_EVENT_UNSPECIFIED);
 		} else {
 			dev_dbg(priv->dev, "[%u] %s: no violation:  %d\n",
@@ -435,7 +544,7 @@ int tsens_set_trips(void *_sensor, int low, int high)
 	spin_unlock_irqrestore(&priv->ul_lock, flags);
 
 	dev_dbg(dev, "[%u] %s: (%d:%d)->(%d:%d)\n",
-		s->hw_id, __func__, d.low_thresh, d.up_thresh, cl_low, cl_high);
+		hw_id, __func__, d.low_thresh, d.up_thresh, cl_low, cl_high);
 
 	return 0;
 }
@@ -457,7 +566,7 @@ void tsens_disable_irq(struct tsens_priv *priv)
 	regmap_field_write(priv->rf[INT_EN], 0);
 }
 
-int get_temp_tsens_valid(struct tsens_sensor *s, int *temp)
+int get_temp_tsens_valid(const struct tsens_sensor *s, int *temp)
 {
 	struct tsens_priv *priv = s->priv;
 	int hw_id = s->hw_id;
@@ -486,7 +595,7 @@ int get_temp_tsens_valid(struct tsens_sensor *s, int *temp)
 	return 0;
 }
 
-int get_temp_common(struct tsens_sensor *s, int *temp)
+int get_temp_common(const struct tsens_sensor *s, int *temp)
 {
 	struct tsens_priv *priv = s->priv;
 	int hw_id = s->hw_id;
@@ -590,6 +699,7 @@ int __init init_common(struct tsens_priv *priv)
 {
 	void __iomem *tm_base, *srot_base;
 	struct device *dev = priv->dev;
+	u32 ver_minor;
 	struct resource *res;
 	u32 enabled;
 	int ret, i, j;
@@ -602,7 +712,7 @@ int __init init_common(struct tsens_priv *priv)
 		/* DT with separate SROT and TM address space */
 		priv->tm_offset = 0;
 		res = platform_get_resource(op, IORESOURCE_MEM, 1);
-		srot_base = devm_ioremap_resource(&op->dev, res);
+		srot_base = devm_ioremap_resource(dev, res);
 		if (IS_ERR(srot_base)) {
 			ret = PTR_ERR(srot_base);
 			goto err_put_device;
@@ -620,7 +730,7 @@ int __init init_common(struct tsens_priv *priv)
 	}
 
 	res = platform_get_resource(op, IORESOURCE_MEM, 0);
-	tm_base = devm_ioremap_resource(&op->dev, res);
+	tm_base = devm_ioremap_resource(dev, res);
 	if (IS_ERR(tm_base)) {
 		ret = PTR_ERR(tm_base);
 		goto err_put_device;
@@ -639,6 +749,9 @@ int __init init_common(struct tsens_priv *priv)
 			if (IS_ERR(priv->rf[i]))
 				return PTR_ERR(priv->rf[i]);
 		}
+		ret = regmap_field_read(priv->rf[VER_MINOR], &ver_minor);
+		if (ret)
+			goto err_put_device;
 	}
 
 	priv->rf[TSENS_EN] = devm_regmap_field_alloc(dev, priv->srot_map,
@@ -683,12 +796,47 @@ int __init init_common(struct tsens_priv *priv)
 		}
 	}
 
+	if (priv->feat->crit_int) {
+		/* Loop might need changes if enum regfield_ids is reordered */
+		for (j = CRITICAL_STATUS_0; j <= CRIT_THRESH_15; j += 16) {
+			for (i = 0; i < priv->feat->max_sensors; i++) {
+				int idx = j + i;
+
+				priv->rf[idx] =
+					devm_regmap_field_alloc(dev,
+								priv->tm_map,
+								priv->fields[idx]);
+				if (IS_ERR(priv->rf[idx])) {
+					ret = PTR_ERR(priv->rf[idx]);
+					goto err_put_device;
+				}
+			}
+		}
+	}
+
+	if (tsens_version(priv) > VER_1_X &&  ver_minor > 2) {
+		/* Watchdog is present only on v2.3+ */
+		priv->feat->has_watchdog = 1;
+		for (i = WDOG_BARK_STATUS; i <= CC_MON_MASK; i++) {
+			priv->rf[i] = devm_regmap_field_alloc(dev, priv->tm_map,
+							      priv->fields[i]);
+			if (IS_ERR(priv->rf[i])) {
+				ret = PTR_ERR(priv->rf[i]);
+				goto err_put_device;
+			}
+		}
+		/*
+		 * Watchdog is already enabled, unmask the bark.
+		 * Disable cycle completion monitoring
+		 */
+		regmap_field_write(priv->rf[WDOG_BARK_MASK], 0);
+		regmap_field_write(priv->rf[CC_MON_MASK], 1);
+	}
+
 	spin_lock_init(&priv->ul_lock);
 	tsens_enable_irq(priv);
 	tsens_debug_init(op);
 
-	return 0;
-
 err_put_device:
 	put_device(&op->dev);
 	return ret;
diff --git a/drivers/thermal/qcom/tsens-v0_1.c b/drivers/thermal/qcom/tsens-v0_1.c
index 4b8dd6de02ce..959a9371d205 100644
--- a/drivers/thermal/qcom/tsens-v0_1.c
+++ b/drivers/thermal/qcom/tsens-v0_1.c
@@ -327,7 +327,7 @@ static int calibrate_8974(struct tsens_priv *priv)
 
 /* v0.1: 8916, 8974 */
 
-static const struct tsens_features tsens_v0_1_feat = {
+static struct tsens_features tsens_v0_1_feat = {
 	.ver_major	= VER_0_1,
 	.crit_int	= 0,
 	.adc		= 1,
@@ -377,7 +377,7 @@ static const struct tsens_ops ops_8916 = {
 	.get_temp	= get_temp_common,
 };
 
-const struct tsens_plat_data data_8916 = {
+struct tsens_plat_data data_8916 = {
 	.num_sensors	= 5,
 	.ops		= &ops_8916,
 	.hw_ids		= (unsigned int []){0, 1, 2, 4, 5 },
@@ -392,7 +392,7 @@ static const struct tsens_ops ops_8974 = {
 	.get_temp	= get_temp_common,
 };
 
-const struct tsens_plat_data data_8974 = {
+struct tsens_plat_data data_8974 = {
 	.num_sensors	= 11,
 	.ops		= &ops_8974,
 	.feat		= &tsens_v0_1_feat,
diff --git a/drivers/thermal/qcom/tsens-v1.c b/drivers/thermal/qcom/tsens-v1.c
index bd2ddb684a45..b682a4df0081 100644
--- a/drivers/thermal/qcom/tsens-v1.c
+++ b/drivers/thermal/qcom/tsens-v1.c
@@ -299,7 +299,7 @@ static int calibrate_8976(struct tsens_priv *priv)
 
 /* v1.x: msm8956,8976,qcs404,405 */
 
-static const struct tsens_features tsens_v1_feat = {
+static struct tsens_features tsens_v1_feat = {
 	.ver_major	= VER_1_X,
 	.crit_int	= 0,
 	.adc		= 1,
@@ -368,7 +368,7 @@ static const struct tsens_ops ops_generic_v1 = {
 	.get_temp	= get_temp_tsens_valid,
 };
 
-const struct tsens_plat_data data_tsens_v1 = {
+struct tsens_plat_data data_tsens_v1 = {
 	.ops		= &ops_generic_v1,
 	.feat		= &tsens_v1_feat,
 	.fields	= tsens_v1_regfields,
@@ -381,7 +381,7 @@ static const struct tsens_ops ops_8976 = {
 };
 
 /* Valid for both MSM8956 and MSM8976. Sensor ID 3 is unused. */
-const struct tsens_plat_data data_8976 = {
+struct tsens_plat_data data_8976 = {
 	.num_sensors	= 11,
 	.ops		= &ops_8976,
 	.hw_ids		= (unsigned int[]){0, 1, 2, 4, 5, 6, 7, 8, 9, 10},
diff --git a/drivers/thermal/qcom/tsens-v2.c b/drivers/thermal/qcom/tsens-v2.c
index a4d15e1abfdd..b293ed32174b 100644
--- a/drivers/thermal/qcom/tsens-v2.c
+++ b/drivers/thermal/qcom/tsens-v2.c
@@ -24,10 +24,11 @@
 #define TM_Sn_CRITICAL_THRESHOLD_OFF	0x0060
 #define TM_Sn_STATUS_OFF		0x00a0
 #define TM_TRDY_OFF			0x00e4
+#define TM_WDOG_LOG_OFF		0x013c
 
 /* v2.x: 8996, 8998, sdm845 */
 
-static const struct tsens_features tsens_v2_feat = {
+static struct tsens_features tsens_v2_feat = {
 	.ver_major	= VER_2_X,
 	.crit_int	= 1,
 	.adc		= 0,
@@ -51,8 +52,9 @@ static const struct reg_field tsens_v2_regfields[MAX_REGFIELDS] = {
 	[INT_EN]  = REG_FIELD(TM_INT_EN_OFF, 0, 2),
 
 	/* TEMPERATURE THRESHOLDS */
-	REG_FIELD_FOR_EACH_SENSOR16(LOW_THRESH, TM_Sn_UPPER_LOWER_THRESHOLD_OFF,  0,  11),
-	REG_FIELD_FOR_EACH_SENSOR16(UP_THRESH,  TM_Sn_UPPER_LOWER_THRESHOLD_OFF, 12,  23),
+	REG_FIELD_FOR_EACH_SENSOR16(LOW_THRESH,  TM_Sn_UPPER_LOWER_THRESHOLD_OFF,  0,  11),
+	REG_FIELD_FOR_EACH_SENSOR16(UP_THRESH,   TM_Sn_UPPER_LOWER_THRESHOLD_OFF, 12,  23),
+	REG_FIELD_FOR_EACH_SENSOR16(CRIT_THRESH, TM_Sn_CRITICAL_THRESHOLD_OFF,     0,  11),
 
 	/* INTERRUPTS [CLEAR/STATUS/MASK] */
 	REG_FIELD_SPLIT_BITS_0_15(LOW_INT_STATUS,  TM_UPPER_LOWER_INT_STATUS_OFF),
@@ -61,6 +63,18 @@ static const struct reg_field tsens_v2_regfields[MAX_REGFIELDS] = {
 	REG_FIELD_SPLIT_BITS_16_31(UP_INT_STATUS,  TM_UPPER_LOWER_INT_STATUS_OFF),
 	REG_FIELD_SPLIT_BITS_16_31(UP_INT_CLEAR,   TM_UPPER_LOWER_INT_CLEAR_OFF),
 	REG_FIELD_SPLIT_BITS_16_31(UP_INT_MASK,    TM_UPPER_LOWER_INT_MASK_OFF),
+	REG_FIELD_SPLIT_BITS_0_15(CRIT_INT_STATUS, TM_CRITICAL_INT_STATUS_OFF),
+	REG_FIELD_SPLIT_BITS_0_15(CRIT_INT_CLEAR,  TM_CRITICAL_INT_CLEAR_OFF),
+	REG_FIELD_SPLIT_BITS_0_15(CRIT_INT_MASK,   TM_CRITICAL_INT_MASK_OFF),
+
+	/* WATCHDOG on v2.3 or later */
+	[WDOG_BARK_STATUS] = REG_FIELD(TM_CRITICAL_INT_STATUS_OFF, 31, 31),
+	[WDOG_BARK_CLEAR]  = REG_FIELD(TM_CRITICAL_INT_CLEAR_OFF,  31, 31),
+	[WDOG_BARK_MASK]   = REG_FIELD(TM_CRITICAL_INT_MASK_OFF,   31, 31),
+	[CC_MON_STATUS]    = REG_FIELD(TM_CRITICAL_INT_STATUS_OFF, 30, 30),
+	[CC_MON_CLEAR]     = REG_FIELD(TM_CRITICAL_INT_CLEAR_OFF,  30, 30),
+	[CC_MON_MASK]      = REG_FIELD(TM_CRITICAL_INT_MASK_OFF,   30, 30),
+	[WDOG_BARK_COUNT]  = REG_FIELD(TM_WDOG_LOG_OFF,             0,  7),
 
 	/* Sn_STATUS */
 	REG_FIELD_FOR_EACH_SENSOR16(LAST_TEMP,       TM_Sn_STATUS_OFF,  0,  11),
@@ -81,14 +95,14 @@ static const struct tsens_ops ops_generic_v2 = {
 	.get_temp	= get_temp_tsens_valid,
 };
 
-const struct tsens_plat_data data_tsens_v2 = {
+struct tsens_plat_data data_tsens_v2 = {
 	.ops		= &ops_generic_v2,
 	.feat		= &tsens_v2_feat,
 	.fields	= tsens_v2_regfields,
 };
 
 /* Kept around for backward compatibility with old msm8996.dtsi */
-const struct tsens_plat_data data_8996 = {
+struct tsens_plat_data data_8996 = {
 	.num_sensors	= 13,
 	.ops		= &ops_generic_v2,
 	.feat		= &tsens_v2_feat,
diff --git a/drivers/thermal/qcom/tsens.c b/drivers/thermal/qcom/tsens.c
index 0e7cf5236932..2f77d235cf73 100644
--- a/drivers/thermal/qcom/tsens.c
+++ b/drivers/thermal/qcom/tsens.c
@@ -85,11 +85,42 @@ static const struct thermal_zone_of_device_ops tsens_of_ops = {
 	.set_trips = tsens_set_trips,
 };
 
+static int tsens_register_irq(struct tsens_priv *priv, char *irqname,
+			      irq_handler_t thread_fn)
+{
+	struct platform_device *pdev;
+	int ret, irq;
+
+	pdev = of_find_device_by_node(priv->dev->of_node);
+	if (!pdev)
+		return -ENODEV;
+
+	irq = platform_get_irq_byname(pdev, irqname);
+	if (irq < 0) {
+		ret = irq;
+		/* For old DTs with no IRQ defined */
+		if (irq == -ENXIO)
+			ret = 0;
+	} else {
+		ret = devm_request_threaded_irq(&pdev->dev, irq,
+						NULL, thread_fn,
+						IRQF_ONESHOT,
+						dev_name(&pdev->dev), priv);
+		if (ret)
+			dev_err(&pdev->dev, "%s: failed to get irq\n",
+				__func__);
+		else
+			enable_irq_wake(irq);
+	}
+
+	put_device(&pdev->dev);
+	return ret;
+}
+
 static int tsens_register(struct tsens_priv *priv)
 {
-	int i, ret, irq;
+	int i, ret;
 	struct thermal_zone_device *tzd;
-	struct platform_device *pdev;
 
 	for (i = 0;  i < priv->num_sensors; i++) {
 		priv->sensor[i].priv = priv;
@@ -103,32 +134,14 @@ static int tsens_register(struct tsens_priv *priv)
 			priv->ops->enable(priv, i);
 	}
 
-	pdev = of_find_device_by_node(priv->dev->of_node);
-	if (!pdev)
-		return -ENODEV;
-
-	irq = platform_get_irq_byname(pdev, "uplow");
-	if (irq < 0) {
-		ret = irq;
-		/* For old DTs with no IRQ defined */
-		if (irq == -ENXIO)
-			ret = 0;
-		goto err_put_device;
-	}
-
-	ret = devm_request_threaded_irq(&pdev->dev, irq,
-					NULL, tsens_irq_thread,
-					IRQF_TRIGGER_HIGH | IRQF_ONESHOT,
-					dev_name(&pdev->dev), priv);
-	if (ret) {
-		dev_err(&pdev->dev, "%s: failed to get irq\n", __func__);
-		goto err_put_device;
-	}
+	ret = tsens_register_irq(priv, "uplow", tsens_irq_thread);
+	if (ret < 0)
+		return ret;
 
-	enable_irq_wake(irq);
+	if (priv->feat->crit_int)
+		ret = tsens_register_irq(priv, "critical",
+					 tsens_critical_irq_thread);
 
-err_put_device:
-	put_device(&pdev->dev);
 	return ret;
 }
 
diff --git a/drivers/thermal/qcom/tsens.h b/drivers/thermal/qcom/tsens.h
index e24a865fbc34..502acf0e6828 100644
--- a/drivers/thermal/qcom/tsens.h
+++ b/drivers/thermal/qcom/tsens.h
@@ -23,6 +23,7 @@
 
 struct tsens_priv;
 
+/* IP version numbers in ascending order */
 enum tsens_ver {
 	VER_0_1 = 0,
 	VER_1_X,
@@ -32,6 +33,7 @@ enum tsens_ver {
 enum tsens_irq_type {
 	LOWER,
 	UPPER,
+	CRITICAL,
 };
 
 /**
@@ -67,7 +69,7 @@ struct tsens_ops {
 	/* mandatory callbacks */
 	int (*init)(struct tsens_priv *priv);
 	int (*calibrate)(struct tsens_priv *priv);
-	int (*get_temp)(struct tsens_sensor *s, int *temp);
+	int (*get_temp)(const struct tsens_sensor *s, int *temp);
 	/* optional callbacks */
 	int (*enable)(struct tsens_priv *priv, int i);
 	void (*disable)(struct tsens_priv *priv);
@@ -374,6 +376,82 @@ enum regfield_ids {
 	CRITICAL_STATUS_13,
 	CRITICAL_STATUS_14,
 	CRITICAL_STATUS_15,
+	CRIT_INT_STATUS_0,	/* CRITICAL interrupt status */
+	CRIT_INT_STATUS_1,
+	CRIT_INT_STATUS_2,
+	CRIT_INT_STATUS_3,
+	CRIT_INT_STATUS_4,
+	CRIT_INT_STATUS_5,
+	CRIT_INT_STATUS_6,
+	CRIT_INT_STATUS_7,
+	CRIT_INT_STATUS_8,
+	CRIT_INT_STATUS_9,
+	CRIT_INT_STATUS_10,
+	CRIT_INT_STATUS_11,
+	CRIT_INT_STATUS_12,
+	CRIT_INT_STATUS_13,
+	CRIT_INT_STATUS_14,
+	CRIT_INT_STATUS_15,
+	CRIT_INT_CLEAR_0,	/* CRITICAL interrupt clear */
+	CRIT_INT_CLEAR_1,
+	CRIT_INT_CLEAR_2,
+	CRIT_INT_CLEAR_3,
+	CRIT_INT_CLEAR_4,
+	CRIT_INT_CLEAR_5,
+	CRIT_INT_CLEAR_6,
+	CRIT_INT_CLEAR_7,
+	CRIT_INT_CLEAR_8,
+	CRIT_INT_CLEAR_9,
+	CRIT_INT_CLEAR_10,
+	CRIT_INT_CLEAR_11,
+	CRIT_INT_CLEAR_12,
+	CRIT_INT_CLEAR_13,
+	CRIT_INT_CLEAR_14,
+	CRIT_INT_CLEAR_15,
+	CRIT_INT_MASK_0,	/* CRITICAL interrupt mask */
+	CRIT_INT_MASK_1,
+	CRIT_INT_MASK_2,
+	CRIT_INT_MASK_3,
+	CRIT_INT_MASK_4,
+	CRIT_INT_MASK_5,
+	CRIT_INT_MASK_6,
+	CRIT_INT_MASK_7,
+	CRIT_INT_MASK_8,
+	CRIT_INT_MASK_9,
+	CRIT_INT_MASK_10,
+	CRIT_INT_MASK_11,
+	CRIT_INT_MASK_12,
+	CRIT_INT_MASK_13,
+	CRIT_INT_MASK_14,
+	CRIT_INT_MASK_15,
+	CRIT_THRESH_0,		/* CRITICAL threshold values */
+	CRIT_THRESH_1,
+	CRIT_THRESH_2,
+	CRIT_THRESH_3,
+	CRIT_THRESH_4,
+	CRIT_THRESH_5,
+	CRIT_THRESH_6,
+	CRIT_THRESH_7,
+	CRIT_THRESH_8,
+	CRIT_THRESH_9,
+	CRIT_THRESH_10,
+	CRIT_THRESH_11,
+	CRIT_THRESH_12,
+	CRIT_THRESH_13,
+	CRIT_THRESH_14,
+	CRIT_THRESH_15,
+
+	/* WATCHDOG */
+	WDOG_BARK_STATUS,
+	WDOG_BARK_CLEAR,
+	WDOG_BARK_MASK,
+	WDOG_BARK_COUNT,
+
+	/* CYCLE COMPLETION MONITOR */
+	CC_MON_STATUS,
+	CC_MON_CLEAR,
+	CC_MON_MASK,
+
 	MIN_STATUS_0,		/* MIN threshold violated */
 	MIN_STATUS_1,
 	MIN_STATUS_2,
@@ -418,6 +496,7 @@ enum regfield_ids {
  * @adc:      do the sensors only output adc code (instead of temperature)?
  * @srot_split: does the IP neatly splits the register space into SROT and TM,
  *              with SROT only being available to secure boot firmware?
+ * @has_watchdog: does this IP support watchdog functionality?
  * @max_sensors: maximum sensors supported by this version of the IP
  */
 struct tsens_features {
@@ -425,6 +504,7 @@ struct tsens_features {
 	unsigned int crit_int:1;
 	unsigned int adc:1;
 	unsigned int srot_split:1;
+	unsigned int has_watchdog:1;
 	unsigned int max_sensors;
 };
 
@@ -440,12 +520,14 @@ struct tsens_plat_data {
 	const u32		num_sensors;
 	const struct tsens_ops	*ops;
 	unsigned int		*hw_ids;
-	const struct tsens_features	*feat;
+	struct tsens_features	*feat;
 	const struct reg_field		*fields;
 };
 
 /**
  * struct tsens_context - Registers to be saved/restored across a context loss
+ * @threshold: Threshold register value
+ * @control: Control register value
  */
 struct tsens_context {
 	int	threshold;
@@ -460,6 +542,8 @@ struct tsens_context {
  * @srot_map: pointer to SROT register address space
  * @tm_offset: deal with old device trees that don't address TM and SROT
  *             address space separately
+ * @ul_lock: lock while processing upper/lower threshold interrupts
+ * @crit_lock: lock while processing critical threshold interrupts
  * @rf: array of regmap_fields used to store value of the field
  * @ctx: registers to be saved and restored during suspend/resume
  * @feat: features of the IP
@@ -481,36 +565,37 @@ struct tsens_priv {
 
 	struct regmap_field		*rf[MAX_REGFIELDS];
 	struct tsens_context		ctx;
-	const struct tsens_features	*feat;
+	struct tsens_features		*feat;
 	const struct reg_field		*fields;
 	const struct tsens_ops		*ops;
 
 	struct dentry			*debug_root;
 	struct dentry			*debug;
 
-	struct tsens_sensor		sensor[0];
+	struct tsens_sensor		sensor[];
 };
 
 char *qfprom_read(struct device *dev, const char *cname);
 void compute_intercept_slope(struct tsens_priv *priv, u32 *pt1, u32 *pt2, u32 mode);
 int init_common(struct tsens_priv *priv);
-int get_temp_tsens_valid(struct tsens_sensor *s, int *temp);
-int get_temp_common(struct tsens_sensor *s, int *temp);
+int get_temp_tsens_valid(const struct tsens_sensor *s, int *temp);
+int get_temp_common(const struct tsens_sensor *s, int *temp);
 int tsens_enable_irq(struct tsens_priv *priv);
 void tsens_disable_irq(struct tsens_priv *priv);
 int tsens_set_trips(void *_sensor, int low, int high);
 irqreturn_t tsens_irq_thread(int irq, void *data);
+irqreturn_t tsens_critical_irq_thread(int irq, void *data);
 
 /* TSENS target */
-extern const struct tsens_plat_data data_8960;
+extern struct tsens_plat_data data_8960;
 
 /* TSENS v0.1 targets */
-extern const struct tsens_plat_data data_8916, data_8974;
+extern struct tsens_plat_data data_8916, data_8974;
 
 /* TSENS v1 targets */
-extern const struct tsens_plat_data data_tsens_v1, data_8976;
+extern struct tsens_plat_data data_tsens_v1, data_8976;
 
 /* TSENS v2 targets */
-extern const struct tsens_plat_data data_8996, data_tsens_v2;
+extern struct tsens_plat_data data_8996, data_tsens_v2;
 
 #endif /* __QCOM_TSENS_H__ */