drivers/thermal/tsens1xxx.c - kernel/msm-4.9 - Gitiles

 /* Copyright (c) 2012-2018, The Linux Foundation. All rights reserved.
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 2 and
  * only version 2 as published by the Free Software Foundation.
  *
  * This program is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  * GNU General Public License for more details.
  *
  */

 #include <linux/module.h>
 #include <linux/platform_device.h>
 #include <linux/slab.h>
 #include <linux/err.h>
 #include <linux/of.h>
 #include <linux/vmalloc.h>
 #include "tsens.h"
 #include "thermal_core.h"

 #define TSENS_DRIVER_NAME			"msm-tsens"

 #define TSENS_UPPER_LOWER_INTERRUPT_CTRL(n)		(n)
 #define TSENS_INTERRUPT_EN		BIT(0)

 #define TSENS_S0_UPPER_LOWER_STATUS_CTRL_ADDR(n)	((n) + 0x04)
 #define TSENS_UPPER_STATUS_CLR		BIT(21)
 #define TSENS_LOWER_STATUS_CLR		BIT(20)
 #define TSENS_UPPER_THRESHOLD_MASK	0xffc00
 #define TSENS_LOWER_THRESHOLD_MASK	0x3ff
 #define TSENS_UPPER_THRESHOLD_SHIFT	10

 #define TSENS_S0_STATUS_ADDR(n)		((n) + 0x30)
 #define TSENS_S0_TRDY_ADDR(n)		((n) + 0x5c)
 #define TSENS_SN_ADDR_OFFSET		0x4
 #define TSENS_SN_STATUS_TEMP_MASK	0x3ff
 #define TSENS_SN_STATUS_LOWER_STATUS	BIT(11)
 #define TSENS_SN_STATUS_UPPER_STATUS	BIT(12)
 #define TSENS_STATUS_ADDR_OFFSET			2

 #define TSENS_TRDY_MASK			BIT(0)

 #define TSENS_SN_STATUS_ADDR(n)	((n) + 0x44)
 #define TSENS_SN_STATUS_VALID		BIT(14)
 #define TSENS_SN_STATUS_VALID_MASK	0x4000
 #define TSENS_TRDY_ADDR(n)		((n) + 0x84)

 #define TSENS_CTRL_ADDR(n)		(n)
 #define TSENS_EN				BIT(0)
 #define TSENS_CTRL_SENSOR_EN_MASK(n)		((n >> 3) & 0x7ff)
 #define TSENS_TRDY_RDY_MIN_TIME		2000
 #define TSENS_TRDY_RDY_MAX_TIME		2100
 #define TSENS_THRESHOLD_MAX_CODE	0x3ff
 #define TSENS_THRESHOLD_MIN_CODE	0x0
 #define TSENS_SCALE_MILLIDEG		1000

 static int code_to_degc(u32 adc_code, const struct tsens_sensor *sensor)
 {
 	int degc, num, den;

 	num = (adc_code * SLOPE_FACTOR) - sensor->offset;
 	den = sensor->slope;

 	if (num > 0)
 		degc = num + (den / 2);
 	else if (num < 0)
 		degc = num - (den / 2);
 	else
 		degc = num;

 	degc /= den;

 	return degc;
 }

 static int degc_to_code(int degc, const struct tsens_sensor *sensor)
 {
 	int code = ((degc * sensor->slope)
 		+ sensor->offset)/SLOPE_FACTOR;

 	if (code > TSENS_THRESHOLD_MAX_CODE)
 		code = TSENS_THRESHOLD_MAX_CODE;
 	else if (code < TSENS_THRESHOLD_MIN_CODE)
 		code = TSENS_THRESHOLD_MIN_CODE;
 	pr_debug("raw_code:0x%x, degc:%d\n",
 			code, degc);
 	return code;
 }

 static int tsens1xxx_get_temp(struct tsens_sensor *sensor, int *temp)
 {
 	struct tsens_device *tmdev = NULL;
 	unsigned int code;
 	void __iomem *sensor_addr;
 	void __iomem *trdy_addr;
 	int last_temp = 0, last_temp2 = 0, last_temp3 = 0;
 	bool last_temp_valid = false, last_temp2_valid = false;
 	bool last_temp3_valid = false;

 	if (!sensor)
 		return -EINVAL;

 	tmdev = sensor->tmdev;

 	if ((tmdev->ctrl_data->ver_major == 1) &&
 			(tmdev->ctrl_data->ver_minor == 1)) {
 		trdy_addr = TSENS_S0_TRDY_ADDR(tmdev->tsens_tm_addr);
 		sensor_addr = TSENS_S0_STATUS_ADDR(tmdev->tsens_tm_addr);

 		if (!(tmdev->prev_reading_avail)) {
 			while (!((readl_relaxed(trdy_addr)) & TSENS_TRDY_MASK))
 				usleep_range(TSENS_TRDY_RDY_MIN_TIME,
 						TSENS_TRDY_RDY_MAX_TIME);
 			tmdev->prev_reading_avail = true;
 		}
 	} else {
 		trdy_addr = TSENS_TRDY_ADDR(tmdev->tsens_tm_addr);
 		sensor_addr = TSENS_SN_STATUS_ADDR(tmdev->tsens_tm_addr);
 	}

 	code = readl_relaxed(sensor_addr +
 			(sensor->hw_id << TSENS_STATUS_ADDR_OFFSET));
 	last_temp = code & TSENS_SN_STATUS_TEMP_MASK;

 	if (tmdev->ctrl_data->valid_status_check) {
 		if (code & TSENS_SN_STATUS_VALID)
 			last_temp_valid = true;
 		else {
 			code = readl_relaxed(sensor_addr +
 				(sensor->hw_id << TSENS_STATUS_ADDR_OFFSET));
 			last_temp2 = code & TSENS_SN_STATUS_TEMP_MASK;
 			if (code & TSENS_SN_STATUS_VALID) {
 				last_temp = last_temp2;
 				last_temp2_valid = true;
 			} else {
 				code = readl_relaxed(sensor_addr +
 					(sensor->hw_id <<
 					TSENS_STATUS_ADDR_OFFSET));
 				last_temp3 = code & TSENS_SN_STATUS_TEMP_MASK;
 				if (code & TSENS_SN_STATUS_VALID) {
 					last_temp = last_temp3;
 					last_temp3_valid = true;
 				}
 			}
 		}
 	}

 	if ((tmdev->ctrl_data->valid_status_check) &&
 		(!last_temp_valid && !last_temp2_valid && !last_temp3_valid)) {
 		if (last_temp == last_temp2)
 			last_temp = last_temp2;
 		else if (last_temp2 == last_temp3)
 			last_temp = last_temp3;
 	}

 	*temp = code_to_degc(last_temp, sensor);
 	*temp = *temp * TSENS_SCALE_MILLIDEG;

 	if (tmdev->ops->dbg)
 		tmdev->ops->dbg(tmdev, (u32)sensor->hw_id,
 				TSENS_DBG_LOG_TEMP_READS, temp);

 	return 0;
 }

 static int tsens_tz_activate_trip_type(struct tsens_sensor *tm_sensor,
 			int trip, enum thermal_device_mode mode)
 {
 	struct tsens_device *tmdev = NULL;
 	unsigned int reg_cntl, code, hi_code, lo_code, mask;

 	/* clear the interrupt and unmask */
 	if (!tm_sensor || trip < 0)
 		return -EINVAL;

 	tmdev = tm_sensor->tmdev;
 	if (!tmdev)
 		return -EINVAL;

 	lo_code = TSENS_THRESHOLD_MIN_CODE;
 	hi_code = TSENS_THRESHOLD_MAX_CODE;

 	reg_cntl = readl_relaxed((TSENS_S0_UPPER_LOWER_STATUS_CTRL_ADDR
 					(tmdev->tsens_tm_addr) +
 					(tm_sensor->hw_id *
 					TSENS_SN_ADDR_OFFSET)));

 	switch (trip) {
 	case THERMAL_TRIP_CONFIGURABLE_HI:
 		tmdev->sensor[tm_sensor->hw_id].thr_state.high_th_state = mode;

 		code = (reg_cntl & TSENS_UPPER_THRESHOLD_MASK)
 					>> TSENS_UPPER_THRESHOLD_SHIFT;
 		mask = TSENS_UPPER_STATUS_CLR;

 		if (!(reg_cntl & TSENS_LOWER_STATUS_CLR))
 			lo_code = (reg_cntl & TSENS_LOWER_THRESHOLD_MASK);
 		break;
 	case THERMAL_TRIP_CONFIGURABLE_LOW:
 		tmdev->sensor[tm_sensor->hw_id].thr_state.low_th_state = mode;

 		code = (reg_cntl & TSENS_LOWER_THRESHOLD_MASK);
 		mask = TSENS_LOWER_STATUS_CLR;

 		if (!(reg_cntl & TSENS_UPPER_STATUS_CLR))
 			hi_code = (reg_cntl & TSENS_UPPER_THRESHOLD_MASK)
 					>> TSENS_UPPER_THRESHOLD_SHIFT;
 		break;
 	default:
 		return -EINVAL;
 	}

 	if (mode == THERMAL_DEVICE_DISABLED)
 		writel_relaxed(reg_cntl | mask,
 		(TSENS_S0_UPPER_LOWER_STATUS_CTRL_ADDR(tmdev->tsens_tm_addr) +
 			(tm_sensor->hw_id * TSENS_SN_ADDR_OFFSET)));
 	else
 		writel_relaxed(reg_cntl & ~mask,
 		(TSENS_S0_UPPER_LOWER_STATUS_CTRL_ADDR(tmdev->tsens_tm_addr) +
 		(tm_sensor->hw_id * TSENS_SN_ADDR_OFFSET)));
 	/* Enable the thresholds */
 	mb();

 	return 0;
 }

 static int tsens1xxx_set_trip_temp(struct tsens_sensor *tm_sensor,
 						int low_temp, int high_temp)
 {
 	unsigned int reg_cntl;
 	unsigned long flags;
 	struct tsens_device *tmdev = NULL;
 	int high_code, low_code, rc = 0;

 	if (!tm_sensor)
 		return -EINVAL;

 	tmdev = tm_sensor->tmdev;
 	if (!tmdev)
 		return -EINVAL;

 	spin_lock_irqsave(&tmdev->tsens_upp_low_lock, flags);

 	if (high_temp != INT_MAX) {
 		high_temp /= TSENS_SCALE_MILLIDEG;
 		high_code = degc_to_code(high_temp, tm_sensor);
 		tmdev->sensor[tm_sensor->hw_id].thr_state.high_adc_code =
 							high_code;
 		tmdev->sensor[tm_sensor->hw_id].thr_state.high_temp =
 							high_temp;

 		reg_cntl = readl_relaxed(TSENS_S0_UPPER_LOWER_STATUS_CTRL_ADDR
 					(tmdev->tsens_tm_addr) +
 					(tm_sensor->hw_id *
 					 TSENS_SN_ADDR_OFFSET));

 		high_code <<= TSENS_UPPER_THRESHOLD_SHIFT;
 		reg_cntl &= ~TSENS_UPPER_THRESHOLD_MASK;
 		writel_relaxed(reg_cntl | high_code,
 				(TSENS_S0_UPPER_LOWER_STATUS_CTRL_ADDR
 					(tmdev->tsens_tm_addr) +
 					(tm_sensor->hw_id *
 					TSENS_SN_ADDR_OFFSET)));
 	}

 	if (low_temp != INT_MIN) {
 		low_temp /= TSENS_SCALE_MILLIDEG;
 		low_code = degc_to_code(low_temp, tm_sensor);
 		tmdev->sensor[tm_sensor->hw_id].thr_state.low_adc_code =
 							low_code;
 		tmdev->sensor[tm_sensor->hw_id].thr_state.low_temp =
 							low_temp;

 		reg_cntl = readl_relaxed(TSENS_S0_UPPER_LOWER_STATUS_CTRL_ADDR
 					(tmdev->tsens_tm_addr) +
 					(tm_sensor->hw_id *
 					TSENS_SN_ADDR_OFFSET));

 		reg_cntl &= ~TSENS_LOWER_THRESHOLD_MASK;
 		writel_relaxed(reg_cntl | low_code,
 				(TSENS_S0_UPPER_LOWER_STATUS_CTRL_ADDR
 					(tmdev->tsens_tm_addr) +
 					(tm_sensor->hw_id *
 					TSENS_SN_ADDR_OFFSET)));
 	}
 	/* Set trip temperature thresholds */
 	mb();

 	if (high_temp != INT_MAX) {
 		rc = tsens_tz_activate_trip_type(tm_sensor,
 				THERMAL_TRIP_CONFIGURABLE_HI,
 				THERMAL_DEVICE_ENABLED);
 		if (rc) {
 			pr_err("trip high enable error :%d\n", rc);
 			goto fail;
 		}
 	} else {
 		rc = tsens_tz_activate_trip_type(tm_sensor,
 				THERMAL_TRIP_CONFIGURABLE_HI,
 				THERMAL_DEVICE_DISABLED);
 		if (rc) {
 			pr_err("trip high disable error :%d\n", rc);
 			goto fail;
 		}
 	}

 	if (low_temp != INT_MIN) {
 		rc = tsens_tz_activate_trip_type(tm_sensor,
 				THERMAL_TRIP_CONFIGURABLE_LOW,
 				THERMAL_DEVICE_ENABLED);
 		if (rc) {
 			pr_err("trip low enable activation error :%d\n", rc);
 			goto fail;
 		}
 	} else {
 		rc = tsens_tz_activate_trip_type(tm_sensor,
 				THERMAL_TRIP_CONFIGURABLE_LOW,
 				THERMAL_DEVICE_DISABLED);
 		if (rc) {
 			pr_err("trip low disable error :%d\n", rc);
 			goto fail;
 		}
 	}

 fail:
 	spin_unlock_irqrestore(&tmdev->tsens_upp_low_lock, flags);
 	return rc;
 }

 static irqreturn_t tsens_irq_thread(int irq, void *data)
 {
 	struct tsens_device *tm = data;
 	unsigned int i, status, threshold, temp, th_temp;
 	unsigned long flags;
 	void __iomem *sensor_status_addr;
 	void __iomem *sensor_status_ctrl_addr;
 	u32 rc = 0, addr_offset;


 	if ((tm->ctrl_data->ver_major == 1) &&
 			(tm->ctrl_data->ver_minor == 1))
 		sensor_status_addr = TSENS_S0_STATUS_ADDR(tm->tsens_tm_addr);
 	else
 		sensor_status_addr = TSENS_SN_STATUS_ADDR(tm->tsens_tm_addr);

 	sensor_status_ctrl_addr =
 		TSENS_S0_UPPER_LOWER_STATUS_CTRL_ADDR(tm->tsens_tm_addr);

 	for (i = 0; i < tm->ctrl_data->num_sensors; i++) {
 		bool upper_thr = false, lower_thr = false;

 		if (IS_ERR(tm->sensor[i].tzd))
 			continue;

 		rc = tsens1xxx_get_temp(&tm->sensor[i], &temp);
 		if (rc) {
 			pr_debug("Error:%d reading temp sensor:%d\n", rc, i);
 			continue;
 		}

 		spin_lock_irqsave(&tm->tsens_upp_low_lock, flags);

 		addr_offset = tm->sensor[i].hw_id *
 						TSENS_SN_ADDR_OFFSET;
 		status = readl_relaxed(sensor_status_addr + addr_offset);
 		threshold = readl_relaxed(sensor_status_ctrl_addr +
 								addr_offset);

 		if (status & TSENS_SN_STATUS_UPPER_STATUS) {
 			writel_relaxed(threshold | TSENS_UPPER_STATUS_CLR,
 				TSENS_S0_UPPER_LOWER_STATUS_CTRL_ADDR(
 					tm->tsens_tm_addr + addr_offset));
 			th_temp = code_to_degc((threshold &
 					TSENS_UPPER_THRESHOLD_MASK) >>
 					TSENS_UPPER_THRESHOLD_SHIFT,
 					(tm->sensor + i));
 			if (th_temp > (temp/TSENS_SCALE_MILLIDEG)) {
 				pr_debug("Re-arm high threshold\n");
 				rc = tsens_tz_activate_trip_type(
 						&tm->sensor[i],
 						THERMAL_TRIP_CONFIGURABLE_HI,
 						THERMAL_DEVICE_ENABLED);
 				if (rc)
 					pr_err("high rearm failed");
 			} else {
 				upper_thr = true;
 				tm->sensor[i].thr_state.high_th_state =
 					THERMAL_DEVICE_DISABLED;
 			}
 		}

 		if (status & TSENS_SN_STATUS_LOWER_STATUS) {
 			writel_relaxed(threshold | TSENS_LOWER_STATUS_CLR,
 				TSENS_S0_UPPER_LOWER_STATUS_CTRL_ADDR(
 					tm->tsens_tm_addr + addr_offset));
 			th_temp = code_to_degc((threshold &
 					TSENS_LOWER_THRESHOLD_MASK),
 					(tm->sensor + i));
 			if (th_temp < (temp/TSENS_SCALE_MILLIDEG)) {
 				pr_debug("Re-arm Low threshold\n");
 				rc = tsens_tz_activate_trip_type(
 						&tm->sensor[i],
 						THERMAL_TRIP_CONFIGURABLE_LOW,
 						THERMAL_DEVICE_ENABLED);
 				if (rc)
 					pr_err("low rearm failed");
 			} else {
 				lower_thr = true;
 				tm->sensor[i].thr_state.low_th_state =
 					THERMAL_DEVICE_DISABLED;
 			}
 		}
 		spin_unlock_irqrestore(&tm->tsens_upp_low_lock, flags);

 		if (upper_thr || lower_thr) {
 			pr_debug("sensor:%d trigger temp (%d degC)\n",
 				tm->sensor[i].hw_id,
 				code_to_degc((status &
 				TSENS_SN_STATUS_TEMP_MASK),
 				tm->sensor));
 			of_thermal_handle_trip(tm->sensor[i].tzd);
 		}
 	}

 	/* Disable monitoring sensor trip threshold for triggered sensor */
 	mb();

 	if (tm->ops->dbg)
 		tm->ops->dbg(tm, 0, TSENS_DBG_LOG_INTERRUPT_TIMESTAMP, NULL);

 	return IRQ_HANDLED;
 }

 static int tsens1xxx_hw_sensor_en(struct tsens_device *tmdev,
 					u32 sensor_id)
 {
 	void __iomem *srot_addr;
 	unsigned int srot_val, sensor_en;

 	if ((tmdev->ctrl_data->ver_major == 1) &&
 			(tmdev->ctrl_data->ver_minor == 1))
 		srot_addr = TSENS_CTRL_ADDR(tmdev->tsens_srot_addr);
 	else
 		srot_addr = TSENS_CTRL_ADDR(tmdev->tsens_srot_addr + 0x4);

 	srot_val = readl_relaxed(srot_addr);
 	srot_val = TSENS_CTRL_SENSOR_EN_MASK(srot_val);

 	sensor_en = ((1 << sensor_id) & srot_val);

 	return sensor_en;
 }

 static int tsens1xxx_hw_init(struct tsens_device *tmdev)
 {
 	void __iomem *srot_addr;
 	unsigned int srot_val;

 	if ((tmdev->ctrl_data->ver_major == 1) &&
 			(tmdev->ctrl_data->ver_minor == 1))
 		srot_addr = TSENS_CTRL_ADDR(tmdev->tsens_srot_addr);
 	else
 		srot_addr = TSENS_CTRL_ADDR(tmdev->tsens_srot_addr + 0x4);

 	srot_val = readl_relaxed(srot_addr);
 	if (!(srot_val & TSENS_EN)) {
 		pr_err("TSENS device is not enabled\n");
 		return -ENODEV;
 	}

 	writel_relaxed(TSENS_INTERRUPT_EN,
 			TSENS_UPPER_LOWER_INTERRUPT_CTRL(tmdev->tsens_tm_addr));

 	spin_lock_init(&tmdev->tsens_upp_low_lock);

 	if (tmdev->ctrl_data->mtc) {
 		if (tmdev->ops->dbg)
 			tmdev->ops->dbg(tmdev, 0, TSENS_DBG_MTC_DATA, NULL);
 	}

 	return 0;
 }

 static const struct tsens_irqs tsens1xxx_irqs[] = {
 	{ "tsens-upper-lower", tsens_irq_thread},
 };

 static int tsens1xxx_register_interrupts(struct tsens_device *tmdev)
 {
 	struct platform_device *pdev;
 	int i, rc;

 	if (!tmdev)
 		return -EINVAL;

 	pdev = tmdev->pdev;

 	for (i = 0; i < ARRAY_SIZE(tsens1xxx_irqs); i++) {
 		int irq;

 		irq = platform_get_irq_byname(pdev, tsens1xxx_irqs[i].name);
 		if (irq < 0) {
 			dev_err(&pdev->dev, "failed to get irq %s\n",
 					tsens1xxx_irqs[i].name);
 			return irq;
 		}

 		rc = devm_request_threaded_irq(&pdev->dev, irq, NULL,
 				tsens1xxx_irqs[i].handler,
 				IRQF_TRIGGER_HIGH | IRQF_ONESHOT,
 				tsens1xxx_irqs[i].name, tmdev);
 		if (rc) {
 			dev_err(&pdev->dev, "failed to get irq %s\n",
 					tsens1xxx_irqs[i].name);
 			return rc;
 		}
 		enable_irq_wake(irq);
 	}

 	return 0;
 }

 static const struct tsens_ops ops_tsens1xxx = {
 	.hw_init		= tsens1xxx_hw_init,
 	.get_temp		= tsens1xxx_get_temp,
 	.set_trips		= tsens1xxx_set_trip_temp,
 	.interrupts_reg	= tsens1xxx_register_interrupts,
 	.sensor_en		= tsens1xxx_hw_sensor_en,
 	.calibrate		= calibrate_8937,
 	.dbg            = tsens2xxx_dbg,
 };

 const struct tsens_data data_tsens14xx = {
 	.num_sensors = TSENS_NUM_SENSORS_8937,
 	.ops = &ops_tsens1xxx,
 	.valid_status_check = true,
 	.mtc = true,
 	.ver_major = 1,
 	.ver_minor = 4,
 };

 static const struct tsens_ops ops_tsens1xxx_8909 = {
 	.hw_init		= tsens1xxx_hw_init,
 	.get_temp		= tsens1xxx_get_temp,
 	.set_trips		= tsens1xxx_set_trip_temp,
 	.interrupts_reg	= tsens1xxx_register_interrupts,
 	.sensor_en		= tsens1xxx_hw_sensor_en,
 	.calibrate		= calibrate_8909,
 	.dbg			= tsens2xxx_dbg,
 };

 const struct tsens_data data_tsens1xxx_8909 = {
 	.num_sensors = TSENS_NUM_SENSORS_8909,
 	.ops = &ops_tsens1xxx_8909,
 	.ver_major = 1,
 	.ver_minor = 1,
 };
	/* Copyright (c) 2012-2018, The Linux Foundation. All rights reserved.
	*
	* This program is free software; you can redistribute it and/or modify
	* it under the terms of the GNU General Public License version 2 and
	* only version 2 as published by the Free Software Foundation.
	*
	* This program is distributed in the hope that it will be useful,
	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	* GNU General Public License for more details.
	*
	*/

	#include <linux/module.h>
	#include <linux/platform_device.h>
	#include <linux/slab.h>
	#include <linux/err.h>
	#include <linux/of.h>
	#include <linux/vmalloc.h>
	#include "tsens.h"
	#include "thermal_core.h"

	#define TSENS_DRIVER_NAME "msm-tsens"

	#define TSENS_UPPER_LOWER_INTERRUPT_CTRL(n) (n)
	#define TSENS_INTERRUPT_EN BIT(0)

	#define TSENS_S0_UPPER_LOWER_STATUS_CTRL_ADDR(n) ((n) + 0x04)
	#define TSENS_UPPER_STATUS_CLR BIT(21)
	#define TSENS_LOWER_STATUS_CLR BIT(20)
	#define TSENS_UPPER_THRESHOLD_MASK 0xffc00
	#define TSENS_LOWER_THRESHOLD_MASK 0x3ff
	#define TSENS_UPPER_THRESHOLD_SHIFT 10

	#define TSENS_S0_STATUS_ADDR(n) ((n) + 0x30)
	#define TSENS_S0_TRDY_ADDR(n) ((n) + 0x5c)
	#define TSENS_SN_ADDR_OFFSET 0x4
	#define TSENS_SN_STATUS_TEMP_MASK 0x3ff
	#define TSENS_SN_STATUS_LOWER_STATUS BIT(11)
	#define TSENS_SN_STATUS_UPPER_STATUS BIT(12)
	#define TSENS_STATUS_ADDR_OFFSET 2

	#define TSENS_TRDY_MASK BIT(0)

	#define TSENS_SN_STATUS_ADDR(n) ((n) + 0x44)
	#define TSENS_SN_STATUS_VALID BIT(14)
	#define TSENS_SN_STATUS_VALID_MASK 0x4000
	#define TSENS_TRDY_ADDR(n) ((n) + 0x84)

	#define TSENS_CTRL_ADDR(n) (n)
	#define TSENS_EN BIT(0)
	#define TSENS_CTRL_SENSOR_EN_MASK(n) ((n >> 3) & 0x7ff)
	#define TSENS_TRDY_RDY_MIN_TIME 2000
	#define TSENS_TRDY_RDY_MAX_TIME 2100
	#define TSENS_THRESHOLD_MAX_CODE 0x3ff
	#define TSENS_THRESHOLD_MIN_CODE 0x0
	#define TSENS_SCALE_MILLIDEG 1000

	static int code_to_degc(u32 adc_code, const struct tsens_sensor *sensor)
	{
	int degc, num, den;

	num = (adc_code * SLOPE_FACTOR) - sensor->offset;
	den = sensor->slope;

	if (num > 0)
	degc = num + (den / 2);
	else if (num < 0)
	degc = num - (den / 2);
	else
	degc = num;

	degc /= den;

	return degc;
	}

	static int degc_to_code(int degc, const struct tsens_sensor *sensor)
	{
	int code = ((degc * sensor->slope)
	+ sensor->offset)/SLOPE_FACTOR;

	if (code > TSENS_THRESHOLD_MAX_CODE)
	code = TSENS_THRESHOLD_MAX_CODE;
	else if (code < TSENS_THRESHOLD_MIN_CODE)
	code = TSENS_THRESHOLD_MIN_CODE;
	pr_debug("raw_code:0x%x, degc:%d\n",
	code, degc);
	return code;
	}

	static int tsens1xxx_get_temp(struct tsens_sensor sensor, int temp)
	{
	struct tsens_device *tmdev = NULL;
	unsigned int code;
	void __iomem *sensor_addr;
	void __iomem *trdy_addr;
	int last_temp = 0, last_temp2 = 0, last_temp3 = 0;
	bool last_temp_valid = false, last_temp2_valid = false;
	bool last_temp3_valid = false;

	if (!sensor)
	return -EINVAL;

	tmdev = sensor->tmdev;

	if ((tmdev->ctrl_data->ver_major == 1) &&
	(tmdev->ctrl_data->ver_minor == 1)) {
	trdy_addr = TSENS_S0_TRDY_ADDR(tmdev->tsens_tm_addr);
	sensor_addr = TSENS_S0_STATUS_ADDR(tmdev->tsens_tm_addr);

	if (!(tmdev->prev_reading_avail)) {
	while (!((readl_relaxed(trdy_addr)) & TSENS_TRDY_MASK))
	usleep_range(TSENS_TRDY_RDY_MIN_TIME,
	TSENS_TRDY_RDY_MAX_TIME);
	tmdev->prev_reading_avail = true;
	}
	} else {
	trdy_addr = TSENS_TRDY_ADDR(tmdev->tsens_tm_addr);
	sensor_addr = TSENS_SN_STATUS_ADDR(tmdev->tsens_tm_addr);
	}

	code = readl_relaxed(sensor_addr +
	(sensor->hw_id << TSENS_STATUS_ADDR_OFFSET));
	last_temp = code & TSENS_SN_STATUS_TEMP_MASK;

	if (tmdev->ctrl_data->valid_status_check) {
	if (code & TSENS_SN_STATUS_VALID)
	last_temp_valid = true;
	else {
	code = readl_relaxed(sensor_addr +
	(sensor->hw_id << TSENS_STATUS_ADDR_OFFSET));
	last_temp2 = code & TSENS_SN_STATUS_TEMP_MASK;
	if (code & TSENS_SN_STATUS_VALID) {
	last_temp = last_temp2;
	last_temp2_valid = true;
	} else {
	code = readl_relaxed(sensor_addr +
	(sensor->hw_id <<
	TSENS_STATUS_ADDR_OFFSET));
	last_temp3 = code & TSENS_SN_STATUS_TEMP_MASK;
	if (code & TSENS_SN_STATUS_VALID) {
	last_temp = last_temp3;
	last_temp3_valid = true;
	}
	}
	}
	}

	if ((tmdev->ctrl_data->valid_status_check) &&
	(!last_temp_valid && !last_temp2_valid && !last_temp3_valid)) {
	if (last_temp == last_temp2)
	last_temp = last_temp2;
	else if (last_temp2 == last_temp3)
	last_temp = last_temp3;
	}

	*temp = code_to_degc(last_temp, sensor);
	temp = temp * TSENS_SCALE_MILLIDEG;

	if (tmdev->ops->dbg)
	tmdev->ops->dbg(tmdev, (u32)sensor->hw_id,
	TSENS_DBG_LOG_TEMP_READS, temp);

	return 0;
	}

	static int tsens_tz_activate_trip_type(struct tsens_sensor *tm_sensor,
	int trip, enum thermal_device_mode mode)
	{
	struct tsens_device *tmdev = NULL;
	unsigned int reg_cntl, code, hi_code, lo_code, mask;

	/* clear the interrupt and unmask */
	if (!tm_sensor \|\| trip < 0)
	return -EINVAL;

	tmdev = tm_sensor->tmdev;
	if (!tmdev)
	return -EINVAL;

	lo_code = TSENS_THRESHOLD_MIN_CODE;
	hi_code = TSENS_THRESHOLD_MAX_CODE;

	reg_cntl = readl_relaxed((TSENS_S0_UPPER_LOWER_STATUS_CTRL_ADDR
	(tmdev->tsens_tm_addr) +
	(tm_sensor->hw_id *
	TSENS_SN_ADDR_OFFSET)));

	switch (trip) {
	case THERMAL_TRIP_CONFIGURABLE_HI:
	tmdev->sensor[tm_sensor->hw_id].thr_state.high_th_state = mode;

	code = (reg_cntl & TSENS_UPPER_THRESHOLD_MASK)
	>> TSENS_UPPER_THRESHOLD_SHIFT;
	mask = TSENS_UPPER_STATUS_CLR;

	if (!(reg_cntl & TSENS_LOWER_STATUS_CLR))
	lo_code = (reg_cntl & TSENS_LOWER_THRESHOLD_MASK);
	break;
	case THERMAL_TRIP_CONFIGURABLE_LOW:
	tmdev->sensor[tm_sensor->hw_id].thr_state.low_th_state = mode;

	code = (reg_cntl & TSENS_LOWER_THRESHOLD_MASK);
	mask = TSENS_LOWER_STATUS_CLR;

	if (!(reg_cntl & TSENS_UPPER_STATUS_CLR))
	hi_code = (reg_cntl & TSENS_UPPER_THRESHOLD_MASK)
	>> TSENS_UPPER_THRESHOLD_SHIFT;
	break;
	default:
	return -EINVAL;
	}

	if (mode == THERMAL_DEVICE_DISABLED)
	writel_relaxed(reg_cntl \| mask,
	(TSENS_S0_UPPER_LOWER_STATUS_CTRL_ADDR(tmdev->tsens_tm_addr) +
	(tm_sensor->hw_id * TSENS_SN_ADDR_OFFSET)));
	else
	writel_relaxed(reg_cntl & ~mask,
	(TSENS_S0_UPPER_LOWER_STATUS_CTRL_ADDR(tmdev->tsens_tm_addr) +
	(tm_sensor->hw_id * TSENS_SN_ADDR_OFFSET)));
	/* Enable the thresholds */
	mb();

	return 0;
	}

	static int tsens1xxx_set_trip_temp(struct tsens_sensor *tm_sensor,
	int low_temp, int high_temp)
	{
	unsigned int reg_cntl;
	unsigned long flags;
	struct tsens_device *tmdev = NULL;
	int high_code, low_code, rc = 0;

	if (!tm_sensor)
	return -EINVAL;

	tmdev = tm_sensor->tmdev;
	if (!tmdev)
	return -EINVAL;

	spin_lock_irqsave(&tmdev->tsens_upp_low_lock, flags);

	if (high_temp != INT_MAX) {
	high_temp /= TSENS_SCALE_MILLIDEG;
	high_code = degc_to_code(high_temp, tm_sensor);
	tmdev->sensor[tm_sensor->hw_id].thr_state.high_adc_code =
	high_code;
	tmdev->sensor[tm_sensor->hw_id].thr_state.high_temp =
	high_temp;

	reg_cntl = readl_relaxed(TSENS_S0_UPPER_LOWER_STATUS_CTRL_ADDR
	(tmdev->tsens_tm_addr) +
	(tm_sensor->hw_id *
	TSENS_SN_ADDR_OFFSET));

	high_code <<= TSENS_UPPER_THRESHOLD_SHIFT;
	reg_cntl &= ~TSENS_UPPER_THRESHOLD_MASK;
	writel_relaxed(reg_cntl \| high_code,
	(TSENS_S0_UPPER_LOWER_STATUS_CTRL_ADDR
	(tmdev->tsens_tm_addr) +
	(tm_sensor->hw_id *
	TSENS_SN_ADDR_OFFSET)));
	}

	if (low_temp != INT_MIN) {
	low_temp /= TSENS_SCALE_MILLIDEG;
	low_code = degc_to_code(low_temp, tm_sensor);
	tmdev->sensor[tm_sensor->hw_id].thr_state.low_adc_code =
	low_code;
	tmdev->sensor[tm_sensor->hw_id].thr_state.low_temp =
	low_temp;

	reg_cntl = readl_relaxed(TSENS_S0_UPPER_LOWER_STATUS_CTRL_ADDR
	(tmdev->tsens_tm_addr) +
	(tm_sensor->hw_id *
	TSENS_SN_ADDR_OFFSET));

	reg_cntl &= ~TSENS_LOWER_THRESHOLD_MASK;
	writel_relaxed(reg_cntl \| low_code,
	(TSENS_S0_UPPER_LOWER_STATUS_CTRL_ADDR
	(tmdev->tsens_tm_addr) +
	(tm_sensor->hw_id *
	TSENS_SN_ADDR_OFFSET)));
	}
	/* Set trip temperature thresholds */
	mb();

	if (high_temp != INT_MAX) {
	rc = tsens_tz_activate_trip_type(tm_sensor,
	THERMAL_TRIP_CONFIGURABLE_HI,
	THERMAL_DEVICE_ENABLED);
	if (rc) {
	pr_err("trip high enable error :%d\n", rc);
	goto fail;
	}
	} else {
	rc = tsens_tz_activate_trip_type(tm_sensor,
	THERMAL_TRIP_CONFIGURABLE_HI,
	THERMAL_DEVICE_DISABLED);
	if (rc) {
	pr_err("trip high disable error :%d\n", rc);
	goto fail;
	}
	}

	if (low_temp != INT_MIN) {
	rc = tsens_tz_activate_trip_type(tm_sensor,
	THERMAL_TRIP_CONFIGURABLE_LOW,
	THERMAL_DEVICE_ENABLED);
	if (rc) {
	pr_err("trip low enable activation error :%d\n", rc);
	goto fail;
	}
	} else {
	rc = tsens_tz_activate_trip_type(tm_sensor,
	THERMAL_TRIP_CONFIGURABLE_LOW,
	THERMAL_DEVICE_DISABLED);
	if (rc) {
	pr_err("trip low disable error :%d\n", rc);
	goto fail;
	}
	}

	fail:
	spin_unlock_irqrestore(&tmdev->tsens_upp_low_lock, flags);
	return rc;
	}

	static irqreturn_t tsens_irq_thread(int irq, void *data)
	{
	struct tsens_device *tm = data;
	unsigned int i, status, threshold, temp, th_temp;
	unsigned long flags;
	void __iomem *sensor_status_addr;
	void __iomem *sensor_status_ctrl_addr;
	u32 rc = 0, addr_offset;


	if ((tm->ctrl_data->ver_major == 1) &&
	(tm->ctrl_data->ver_minor == 1))
	sensor_status_addr = TSENS_S0_STATUS_ADDR(tm->tsens_tm_addr);
	else
	sensor_status_addr = TSENS_SN_STATUS_ADDR(tm->tsens_tm_addr);

	sensor_status_ctrl_addr =
	TSENS_S0_UPPER_LOWER_STATUS_CTRL_ADDR(tm->tsens_tm_addr);

	for (i = 0; i < tm->ctrl_data->num_sensors; i++) {
	bool upper_thr = false, lower_thr = false;

	if (IS_ERR(tm->sensor[i].tzd))
	continue;

	rc = tsens1xxx_get_temp(&tm->sensor[i], &temp);
	if (rc) {
	pr_debug("Error:%d reading temp sensor:%d\n", rc, i);
	continue;
	}

	spin_lock_irqsave(&tm->tsens_upp_low_lock, flags);

	addr_offset = tm->sensor[i].hw_id *
	TSENS_SN_ADDR_OFFSET;
	status = readl_relaxed(sensor_status_addr + addr_offset);
	threshold = readl_relaxed(sensor_status_ctrl_addr +
	addr_offset);

	if (status & TSENS_SN_STATUS_UPPER_STATUS) {
	writel_relaxed(threshold \| TSENS_UPPER_STATUS_CLR,
	TSENS_S0_UPPER_LOWER_STATUS_CTRL_ADDR(
	tm->tsens_tm_addr + addr_offset));
	th_temp = code_to_degc((threshold &
	TSENS_UPPER_THRESHOLD_MASK) >>
	TSENS_UPPER_THRESHOLD_SHIFT,
	(tm->sensor + i));
	if (th_temp > (temp/TSENS_SCALE_MILLIDEG)) {
	pr_debug("Re-arm high threshold\n");
	rc = tsens_tz_activate_trip_type(
	&tm->sensor[i],
	THERMAL_TRIP_CONFIGURABLE_HI,
	THERMAL_DEVICE_ENABLED);
	if (rc)
	pr_err("high rearm failed");
	} else {
	upper_thr = true;
	tm->sensor[i].thr_state.high_th_state =
	THERMAL_DEVICE_DISABLED;
	}
	}

	if (status & TSENS_SN_STATUS_LOWER_STATUS) {
	writel_relaxed(threshold \| TSENS_LOWER_STATUS_CLR,
	TSENS_S0_UPPER_LOWER_STATUS_CTRL_ADDR(
	tm->tsens_tm_addr + addr_offset));
	th_temp = code_to_degc((threshold &
	TSENS_LOWER_THRESHOLD_MASK),
	(tm->sensor + i));
	if (th_temp < (temp/TSENS_SCALE_MILLIDEG)) {
	pr_debug("Re-arm Low threshold\n");
	rc = tsens_tz_activate_trip_type(
	&tm->sensor[i],
	THERMAL_TRIP_CONFIGURABLE_LOW,
	THERMAL_DEVICE_ENABLED);
	if (rc)
	pr_err("low rearm failed");
	} else {
	lower_thr = true;
	tm->sensor[i].thr_state.low_th_state =
	THERMAL_DEVICE_DISABLED;
	}
	}
	spin_unlock_irqrestore(&tm->tsens_upp_low_lock, flags);

	if (upper_thr \|\| lower_thr) {
	pr_debug("sensor:%d trigger temp (%d degC)\n",
	tm->sensor[i].hw_id,
	code_to_degc((status &
	TSENS_SN_STATUS_TEMP_MASK),
	tm->sensor));
	of_thermal_handle_trip(tm->sensor[i].tzd);
	}
	}

	/* Disable monitoring sensor trip threshold for triggered sensor */
	mb();

	if (tm->ops->dbg)
	tm->ops->dbg(tm, 0, TSENS_DBG_LOG_INTERRUPT_TIMESTAMP, NULL);

	return IRQ_HANDLED;
	}

	static int tsens1xxx_hw_sensor_en(struct tsens_device *tmdev,
	u32 sensor_id)
	{
	void __iomem *srot_addr;
	unsigned int srot_val, sensor_en;

	if ((tmdev->ctrl_data->ver_major == 1) &&
	(tmdev->ctrl_data->ver_minor == 1))
	srot_addr = TSENS_CTRL_ADDR(tmdev->tsens_srot_addr);
	else
	srot_addr = TSENS_CTRL_ADDR(tmdev->tsens_srot_addr + 0x4);

	srot_val = readl_relaxed(srot_addr);
	srot_val = TSENS_CTRL_SENSOR_EN_MASK(srot_val);

	sensor_en = ((1 << sensor_id) & srot_val);

	return sensor_en;
	}

	static int tsens1xxx_hw_init(struct tsens_device *tmdev)
	{
	void __iomem *srot_addr;
	unsigned int srot_val;

	if ((tmdev->ctrl_data->ver_major == 1) &&
	(tmdev->ctrl_data->ver_minor == 1))
	srot_addr = TSENS_CTRL_ADDR(tmdev->tsens_srot_addr);
	else
	srot_addr = TSENS_CTRL_ADDR(tmdev->tsens_srot_addr + 0x4);

	srot_val = readl_relaxed(srot_addr);
	if (!(srot_val & TSENS_EN)) {
	pr_err("TSENS device is not enabled\n");
	return -ENODEV;
	}

	writel_relaxed(TSENS_INTERRUPT_EN,
	TSENS_UPPER_LOWER_INTERRUPT_CTRL(tmdev->tsens_tm_addr));

	spin_lock_init(&tmdev->tsens_upp_low_lock);

	if (tmdev->ctrl_data->mtc) {
	if (tmdev->ops->dbg)
	tmdev->ops->dbg(tmdev, 0, TSENS_DBG_MTC_DATA, NULL);
	}

	return 0;
	}

	static const struct tsens_irqs tsens1xxx_irqs[] = {
	{ "tsens-upper-lower", tsens_irq_thread},
	};

	static int tsens1xxx_register_interrupts(struct tsens_device *tmdev)
	{
	struct platform_device *pdev;
	int i, rc;

	if (!tmdev)
	return -EINVAL;

	pdev = tmdev->pdev;

	for (i = 0; i < ARRAY_SIZE(tsens1xxx_irqs); i++) {
	int irq;

	irq = platform_get_irq_byname(pdev, tsens1xxx_irqs[i].name);
	if (irq < 0) {
	dev_err(&pdev->dev, "failed to get irq %s\n",
	tsens1xxx_irqs[i].name);
	return irq;
	}

	rc = devm_request_threaded_irq(&pdev->dev, irq, NULL,
	tsens1xxx_irqs[i].handler,
	IRQF_TRIGGER_HIGH \| IRQF_ONESHOT,
	tsens1xxx_irqs[i].name, tmdev);
	if (rc) {
	dev_err(&pdev->dev, "failed to get irq %s\n",
	tsens1xxx_irqs[i].name);
	return rc;
	}
	enable_irq_wake(irq);
	}

	return 0;
	}

	static const struct tsens_ops ops_tsens1xxx = {
	.hw_init = tsens1xxx_hw_init,
	.get_temp = tsens1xxx_get_temp,
	.set_trips = tsens1xxx_set_trip_temp,
	.interrupts_reg = tsens1xxx_register_interrupts,
	.sensor_en = tsens1xxx_hw_sensor_en,
	.calibrate = calibrate_8937,
	.dbg = tsens2xxx_dbg,
	};

	const struct tsens_data data_tsens14xx = {
	.num_sensors = TSENS_NUM_SENSORS_8937,
	.ops = &ops_tsens1xxx,
	.valid_status_check = true,
	.mtc = true,
	.ver_major = 1,
	.ver_minor = 4,
	};

	static const struct tsens_ops ops_tsens1xxx_8909 = {
	.hw_init = tsens1xxx_hw_init,
	.get_temp = tsens1xxx_get_temp,
	.set_trips = tsens1xxx_set_trip_temp,
	.interrupts_reg = tsens1xxx_register_interrupts,
	.sensor_en = tsens1xxx_hw_sensor_en,
	.calibrate = calibrate_8909,
	.dbg = tsens2xxx_dbg,
	};

	const struct tsens_data data_tsens1xxx_8909 = {
	.num_sensors = TSENS_NUM_SENSORS_8909,
	.ops = &ops_tsens1xxx_8909,
	.ver_major = 1,
	.ver_minor = 1,
	};