text: /*
   * Copyright (c) 2014, Fuzhou Rockchip Electronics Co., Ltd
   *
   * This program is free software; you can redistribute it and/or modify it
   * under the terms and conditions of the GNU General Public License,
   * version 2, as published by the Free Software Foundation.
   *
   * This program is distributed in the hope 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/clk.h>
  #include <linux/delay.h>
  #include <linux/interrupt.h>
  #include <linux/io.h>
  #include <linux/module.h>
  #include <linux/of.h>
  #include <linux/of_address.h>
  #include <linux/of_irq.h>
  #include <linux/platform_device.h>
  #include <linux/reset.h>
  #include <linux/thermal.h>
  
  /**
   * If the temperature over a period of time High,
   * the resulting TSHUT gave CRU module,let it reset the entire chip,
   * or via GPIO give PMIC.
   */
  enum tshut_mode {
  	TSHUT_MODE_CRU = 0,
  	TSHUT_MODE_GPIO,
  };
  
  /**
   * the system Temperature Sensors tshut(tshut) polarity
   * the bit 8 is tshut polarity.
   * 0: low active, 1: high active
   */
  enum tshut_polarity {
  	TSHUT_LOW_ACTIVE = 0,
  	TSHUT_HIGH_ACTIVE,
  };
  
  /**
   * The system has three Temperature Sensors.  channel 0 is reserved,
   * channel 1 is for CPU, and channel 2 is for GPU.
   */
  enum sensor_id {
  	SENSOR_CPU = 1,
  	SENSOR_GPU,
  };
  
  struct rockchip_tsadc_chip {
  	/* The hardware-controlled tshut property */
  	long tshut_temp;
  	enum tshut_mode tshut_mode;
  	enum tshut_polarity tshut_polarity;
  
  	/* Chip-wide methods */
  	void (*initialize)(void __iomem *reg, enum tshut_polarity p);
  	void (*irq_ack)(void __iomem *reg);
  	void (*control)(void __iomem *reg, bool on);
  
  	/* Per-sensor methods */
  	int (*get_temp)(int chn, void __iomem *reg, long *temp);
  	void (*set_tshut_temp)(int chn, void __iomem *reg, long temp);
  	void (*set_tshut_mode)(int chn, void __iomem *reg, enum tshut_mode m);
  };
  
  struct rockchip_thermal_sensor {
  	struct rockchip_thermal_data *thermal;
  	struct thermal_zone_device *tzd;
  	enum sensor_id id;
  };
  
  #define NUM_SENSORS	2 /* Ignore unused sensor 0 */
  
  struct rockchip_thermal_data {
  	const struct rockchip_tsadc_chip *chip;
  	struct platform_device *pdev;
  	struct reset_control *reset;
  
  	struct rockchip_thermal_sensor sensors[NUM_SENSORS];
  
  	struct clk *clk;
  	struct clk *pclk;
  
  	void __iomem *regs;
  
  	long tshut_temp;
  	enum tshut_mode tshut_mode;
  	enum tshut_polarity tshut_polarity;
  };
  
  /* TSADC V2 Sensor info define: */
  #define TSADCV2_AUTO_CON			0x04
  #define TSADCV2_INT_EN				0x08
  #define TSADCV2_INT_PD				0x0c
  #define TSADCV2_DATA(chn)			(0x20 + (chn) * 0x04)
  #define TSADCV2_COMP_SHUT(chn)		        (0x40 + (chn) * 0x04)
  #define TSADCV2_HIGHT_INT_DEBOUNCE		0x60
  #define TSADCV2_HIGHT_TSHUT_DEBOUNCE		0x64
  #define TSADCV2_AUTO_PERIOD			0x68
  #define TSADCV2_AUTO_PERIOD_HT			0x6c
  
  #define TSADCV2_AUTO_EN				BIT(0)
  #define TSADCV2_AUTO_DISABLE			~BIT(0)
  #define TSADCV2_AUTO_SRC_EN(chn)		BIT(4 + (chn))
  #define TSADCV2_AUTO_TSHUT_POLARITY_HIGH	BIT(8)
  #define TSADCV2_AUTO_TSHUT_POLARITY_LOW		~BIT(8)
  
  #define TSADCV2_INT_SRC_EN(chn)			BIT(chn)
  #define TSADCV2_SHUT_2GPIO_SRC_EN(chn)		BIT(4 + (chn))
  #define TSADCV2_SHUT_2CRU_SRC_EN(chn)		BIT(8 + (chn))
  
  #define TSADCV2_INT_PD_CLEAR			~BIT(8)
  
  #define TSADCV2_DATA_MASK			0xfff
  #define TSADCV2_HIGHT_INT_DEBOUNCE_COUNT	4
  #define TSADCV2_HIGHT_TSHUT_DEBOUNCE_COUNT	4
  #define TSADCV2_AUTO_PERIOD_TIME		250 /* msec */
  #define TSADCV2_AUTO_PERIOD_HT_TIME		50  /* msec */
  
  struct tsadc_table {
  	unsigned long code;
  	long temp;
  };
  
  static const struct tsadc_table v2_code_table[] = {
  	{TSADCV2_DATA_MASK, -40000},
  	{3800, -40000},
  	{3792, -35000},
  	{3783, -30000},
  	{3774, -25000},
  	{3765, -20000},
  	{3756, -15000},
  	{3747, -10000},
  	{3737, -5000},
  	{3728, 0},
  	{3718, 5000},
  	{3708, 10000},
  	{3698, 15000},
  	{3688, 20000},
  	{3678, 25000},
  	{3667, 30000},
  	{3656, 35000},
  	{3645, 40000},
  	{3634, 45000},
  	{3623, 50000},
  	{3611, 55000},
  	{3600, 60000},
  	{3588, 65000},
  	{3575, 70000},
  	{3563, 75000},
  	{3550, 80000},
  	{3537, 85000},
  	{3524, 90000},
  	{3510, 95000},
  	{3496, 100000},
  	{3482, 105000},
  	{3467, 110000},
  	{3452, 115000},
  	{3437, 120000},
  	{3421, 125000},
  	{0, 125000},
  };
  
  static u32 rk_tsadcv2_temp_to_code(long temp)
  {
  	int high, low, mid;
  
  	low = 0;
  	high = ARRAY_SIZE(v2_code_table) - 1;
  	mid = (high + low) / 2;
  
  	if (temp < v2_code_table[low].temp || temp > v2_code_table[high].temp)
  		return 0;
  
  	while (low <= high) {
  		if (temp == v2_code_table[mid].temp)
  			return v2_code_table[mid].code;
  		else if (temp < v2_code_table[mid].temp)
  			high = mid - 1;
  		else
  			low = mid + 1;
  		mid = (low + high) / 2;
  	}
  
  	return 0;
  }
  
  static long rk_tsadcv2_code_to_temp(u32 code)
  {
  	unsigned int low = 0;
  	unsigned int high = ARRAY_SIZE(v2_code_table) - 1;
  	unsigned int mid = (low + high) / 2;
  	unsigned int num;
  	unsigned long denom;
  
  	/* Invalid code, return -EAGAIN */
  	if (code > TSADCV2_DATA_MASK)
  		return -EAGAIN;
  
  	while (low <= high && mid) {
  		if (code >= v2_code_table[mid].code &&
  		    code < v2_code_table[mid - 1].code)
  			break;
  		else if (code < v2_code_table[mid].code)
  			low = mid + 1;
  		else
  			high = mid - 1;
  		mid = (low + high) / 2;
  	}
  
  	/*
  	 * The 5C granularity provided by the table is too much. Let's
  	 * assume that the relationship between sensor readings and
  	 * temperature between 2 table entries is linear and interpolate
  	 * to produce less granular result.
  	 */
  	num = v2_code_table[mid].temp - v2_code_table[mid - 1].temp;
  	num *= v2_code_table[mid - 1].code - code;
  	denom = v2_code_table[mid - 1].code - v2_code_table[mid].code;
  	return v2_code_table[mid - 1].temp + (num / denom);
  }
  
  /**
   * rk_tsadcv2_initialize - initialize TASDC Controller
   * (1) Set TSADCV2_AUTO_PERIOD, configure the interleave between
   * every two accessing of TSADC in normal operation.
   * (2) Set TSADCV2_AUTO_PERIOD_HT, configure the interleave between
   * every two accessing of TSADC after the temperature is higher
   * than COM_SHUT or COM_INT.
   * (3) Set TSADCV2_HIGH_INT_DEBOUNCE and TSADC_HIGHT_TSHUT_DEBOUNCE,
   * if the temperature is higher than COMP_INT or COMP_SHUT for
   * "debounce" times, TSADC controller will generate interrupt or TSHUT.
   */
  static void rk_tsadcv2_initialize(void __iomem *regs,
  				  enum tshut_polarity tshut_polarity)
  {
  	if (tshut_polarity == TSHUT_HIGH_ACTIVE)
  		writel_relaxed(0 | (TSADCV2_AUTO_TSHUT_POLARITY_HIGH),
  			       regs + TSADCV2_AUTO_CON);
  	else
  		writel_relaxed(0 | (TSADCV2_AUTO_TSHUT_POLARITY_LOW),
  			       regs + TSADCV2_AUTO_CON);
  
  	writel_relaxed(TSADCV2_AUTO_PERIOD_TIME, regs + TSADCV2_AUTO_PERIOD);
  	writel_relaxed(TSADCV2_HIGHT_INT_DEBOUNCE_COUNT,
  		       regs + TSADCV2_HIGHT_INT_DEBOUNCE);
  	writel_relaxed(TSADCV2_AUTO_PERIOD_HT_TIME,
  		       regs + TSADCV2_AUTO_PERIOD_HT);
  	writel_relaxed(TSADCV2_HIGHT_TSHUT_DEBOUNCE_COUNT,
  		       regs + TSADCV2_HIGHT_TSHUT_DEBOUNCE);
  }
  
  static void rk_tsadcv2_irq_ack(void __iomem *regs)
  {
  	u32 val;
  
  	val = readl_relaxed(regs + TSADCV2_INT_PD);
  	writel_relaxed(val & TSADCV2_INT_PD_CLEAR, regs + TSADCV2_INT_PD);
  }
  
  static void rk_tsadcv2_control(void __iomem *regs, bool enable)
  {
  	u32 val;
  
  	val = readl_relaxed(regs + TSADCV2_AUTO_CON);
  	if (enable)
  		val |= TSADCV2_AUTO_EN;
  	else
  		val &= ~TSADCV2_AUTO_EN;
  
  	writel_relaxed(val, regs + TSADCV2_AUTO_CON);
  }
  
  static int rk_tsadcv2_get_temp(int chn, void __iomem *regs, long *temp)
  {
  	u32 val;
  
  	/* the A/D value of the channel last conversion need some time */
  	val = readl_relaxed(regs + TSADCV2_DATA(chn));
  	if (val == 0)
  		return -EAGAIN;
  
  	*temp = rk_tsadcv2_code_to_temp(val);
  
  	return 0;
  }
  
  static void rk_tsadcv2_tshut_temp(int chn, void __iomem *regs, long temp)
  {
  	u32 tshut_value, val;
  
  	tshut_value = rk_tsadcv2_temp_to_code(temp);
  	writel_relaxed(tshut_value, regs + TSADCV2_COMP_SHUT(chn));
  
  	/* TSHUT will be valid */
  	val = readl_relaxed(regs + TSADCV2_AUTO_CON);
  	writel_relaxed(val | TSADCV2_AUTO_SRC_EN(chn), regs + TSADCV2_AUTO_CON);
  }
  
  static void rk_tsadcv2_tshut_mode(int chn, void __iomem *regs,
  				  enum tshut_mode mode)
  {
  	u32 val;
  
  	val = readl_relaxed(regs + TSADCV2_INT_EN);
  	if (mode == TSHUT_MODE_GPIO) {
  		val &= ~TSADCV2_SHUT_2CRU_SRC_EN(chn);
  		val |= TSADCV2_SHUT_2GPIO_SRC_EN(chn);
  	} else {
  		val &= ~TSADCV2_SHUT_2GPIO_SRC_EN(chn);
  		val |= TSADCV2_SHUT_2CRU_SRC_EN(chn);
  	}
  
  	writel_relaxed(val, regs + TSADCV2_INT_EN);
  }
  
  static const struct rockchip_tsadc_chip rk3288_tsadc_data = {
  	.tshut_mode = TSHUT_MODE_GPIO, /* default TSHUT via GPIO give PMIC */
  	.tshut_polarity = TSHUT_LOW_ACTIVE, /* default TSHUT LOW ACTIVE */
  	.tshut_temp = 95000,
  
  	.initialize = rk_tsadcv2_initialize,
  	.irq_ack = rk_tsadcv2_irq_ack,
  	.control = rk_tsadcv2_control,
  	.get_temp = rk_tsadcv2_get_temp,
  	.set_tshut_temp = rk_tsadcv2_tshut_temp,
  	.set_tshut_mode = rk_tsadcv2_tshut_mode,
  };
  
  static const struct of_device_id of_rockchip_thermal_match[] = {
  	{
  		.compatible = "rockchip,rk3288-tsadc",
  		.data = (void *)&rk3288_tsadc_data,
  	},
  	{ /* end */ },
  };
  MODULE_DEVICE_TABLE(of, of_rockchip_thermal_match);
  
  static void
  rockchip_thermal_toggle_sensor(struct rockchip_thermal_sensor *sensor, bool on)
  {
  	struct thermal_zone_device *tzd = sensor->tzd;
  
  	tzd->ops->set_mode(tzd,
  		on ? THERMAL_DEVICE_ENABLED : THERMAL_DEVICE_DISABLED);
  }
  
  static irqreturn_t rockchip_thermal_alarm_irq_thread(int irq, void *dev)
  {
  	struct rockchip_thermal_data *thermal = dev;
  	int i;
  
  	dev_dbg(&thermal->pdev->dev, "thermal alarm\n");
  
  	thermal->chip->irq_ack(thermal->regs);
  
  	for (i = 0; i < ARRAY_SIZE(thermal->sensors); i++)
  		thermal_zone_device_update(thermal->sensors[i].tzd);
  
  	return IRQ_HANDLED;
  }
  
  static int rockchip_thermal_get_temp(void *_sensor, long *out_temp)
  {
  	struct rockchip_thermal_sensor *sensor = _sensor;
  	struct rockchip_thermal_data *thermal = sensor->thermal;
  	const struct rockchip_tsadc_chip *tsadc = sensor->thermal->chip;
  	int retval;
  
  	retval = tsadc->get_temp(sensor->id, thermal->regs, out_temp);
  	dev_dbg(&thermal->pdev->dev, "sensor %d - temp: %ld, retval: %d\n",
  		sensor->id, *out_temp, retval);
  
  	return retval;
  }
  
  static const struct thermal_zone_of_device_ops rockchip_of_thermal_ops = {
  	.get_temp = rockchip_thermal_get_temp,
  };
  
  static int rockchip_configure_from_dt(struct device *dev,
  				      struct device_node *np,
  				      struct rockchip_thermal_data *thermal)
  {
  	u32 shut_temp, tshut_mode, tshut_polarity;
  
  	if (of_property_read_u32(np, "rockchip,hw-tshut-temp", &shut_temp)) {
  		dev_warn(dev,
  			 "Missing tshut temp property, using default %ld\n",
  			 thermal->chip->tshut_temp);
  		thermal->tshut_temp = thermal->chip->tshut_temp;
  	} else {
  		thermal->tshut_temp = shut_temp;
  	}
  
  	if (thermal->tshut_temp > INT_MAX) {
  		dev_err(dev, "Invalid tshut temperature specified: %ld\n",
  			thermal->tshut_temp);
  		return -ERANGE;
  	}
  
  	if (of_property_read_u32(np, "rockchip,hw-tshut-mode", &tshut_mode)) {
  		dev_warn(dev,
  			 "Missing tshut mode property, using default (%s)\n",
  			 thermal->chip->tshut_mode == TSHUT_MODE_GPIO ?
  				"gpio" : "cru");
  		thermal->tshut_mode = thermal->chip->tshut_mode;
  	} else {
  		thermal->tshut_mode = tshut_mode;
  	}
  
  	if (thermal->tshut_mode > 1) {
  		dev_err(dev, "Invalid tshut mode specified: %d\n",
  			thermal->tshut_mode);
  		return -EINVAL;
  	}
  
  	if (of_property_read_u32(np, "rockchip,hw-tshut-polarity",
  				 &tshut_polarity)) {
  		dev_warn(dev,
  			 "Missing tshut-polarity property, using default (%s)\n",
  			 thermal->chip->tshut_polarity == TSHUT_LOW_ACTIVE ?
  				"low" : "high");
  		thermal->tshut_polarity = thermal->chip->tshut_polarity;
  	} else {
  		thermal->tshut_polarity = tshut_polarity;
  	}
  
  	if (thermal->tshut_polarity > 1) {
  		dev_err(dev, "Invalid tshut-polarity specified: %d\n",
  			thermal->tshut_polarity);
  		return -EINVAL;
  	}
  
  	return 0;
  }
  
  static int
  rockchip_thermal_register_sensor(struct platform_device *pdev,
  				 struct rockchip_thermal_data *thermal,
  				 struct rockchip_thermal_sensor *sensor,
  				 enum sensor_id id)
  {
  	const struct rockchip_tsadc_chip *tsadc = thermal->chip;
  	int error;
  
  	tsadc->set_tshut_mode(id, thermal->regs, thermal->tshut_mode);
  	tsadc->set_tshut_temp(id, thermal->regs, thermal->tshut_temp);
  
  	sensor->thermal = thermal;
  	sensor->id = id;
  	sensor->tzd = thermal_zone_of_sensor_register(&pdev->dev, id, sensor,
  						      &rockchip_of_thermal_ops);
  	if (IS_ERR(sensor->tzd)) {
  		error = PTR_ERR(sensor->tzd);
  		dev_err(&pdev->dev, "failed to register sensor %d: %d\n",
  			id, error);
  		return error;
  	}
  
  	return 0;
  }
  
  /*
   * Reset TSADC Controller, reset all tsadc registers.
   */
  static void rockchip_thermal_reset_controller(struct reset_control *reset)
  {
  	reset_control_assert(reset);
  	usleep_range(10, 20);
  	reset_control_deassert(reset);
  }
  
  static int rockchip_thermal_probe(struct platform_device *pdev)
  {
  	struct device_node *np = pdev->dev.of_node;
  	struct rockchip_thermal_data *thermal;
  	const struct of_device_id *match;
  	struct resource *res;
  	int irq;
  	int i;
  	int error;
  
  	match = of_match_node(of_rockchip_thermal_match, np);
  	if (!match)
  		return -ENXIO;
  
  	irq = platform_get_irq(pdev, 0);
  	if (irq < 0) {
  		dev_err(&pdev->dev, "no irq resource?\n");
  		return -EINVAL;
  	}
  
  	thermal = devm_kzalloc(&pdev->dev, sizeof(struct rockchip_thermal_data),
  			       GFP_KERNEL);
  	if (!thermal)
  		return -ENOMEM;
  
  	thermal->pdev = pdev;
  
  	thermal->chip = (const struct rockchip_tsadc_chip *)match->data;
  	if (!thermal->chip)
  		return -EINVAL;
  
  	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
  	thermal->regs = devm_ioremap_resource(&pdev->dev, res);
  	if (IS_ERR(thermal->regs))
  		return PTR_ERR(thermal->regs);
  
  	thermal->reset = devm_reset_control_get(&pdev->dev, "tsadc-apb");
  	if (IS_ERR(thermal->reset)) {
  		error = PTR_ERR(thermal->reset);
  		dev_err(&pdev->dev, "failed to get tsadc reset: %d\n", error);
  		return error;
  	}
  
  	thermal->clk = devm_clk_get(&pdev->dev, "tsadc");
  	if (IS_ERR(thermal->clk)) {
  		error = PTR_ERR(thermal->clk);
  		dev_err(&pdev->dev, "failed to get tsadc clock: %d\n", error);
  		return error;
  	}
  
  	thermal->pclk = devm_clk_get(&pdev->dev, "apb_pclk");
  	if (IS_ERR(thermal->pclk)) {
  		error = PTR_ERR(thermal->pclk);
  		dev_err(&pdev->dev, "failed to get apb_pclk clock: %d\n",
  			error);
  		return error;
  	}
  
  	error = clk_prepare_enable(thermal->clk);
  	if (error) {
  		dev_err(&pdev->dev, "failed to enable converter clock: %d\n",
  			error);
  		return error;
  	}
  
  	error = clk_prepare_enable(thermal->pclk);
  	if (error) {
  		dev_err(&pdev->dev, "failed to enable pclk: %d\n", error);
  		goto err_disable_clk;
  	}
  
  	rockchip_thermal_reset_controller(thermal->reset);
  
  	error = rockchip_configure_from_dt(&pdev->dev, np, thermal);
  	if (error) {
  		dev_err(&pdev->dev, "failed to parse device tree data: %d\n",
  			error);
  		goto err_disable_pclk;
  	}
  
  	thermal->chip->initialize(thermal->regs, thermal->tshut_polarity);
  
  	error = rockchip_thermal_register_sensor(pdev, thermal,
  						 &thermal->sensors[0],
  						 SENSOR_CPU);
  	if (error) {
  		dev_err(&pdev->dev,
  			"failed to register CPU thermal sensor: %d\n", error);
  		goto err_disable_pclk;
  	}
  
  	error = rockchip_thermal_register_sensor(pdev, thermal,
  						 &thermal->sensors[1],
  						 SENSOR_GPU);
  	if (error) {
  		dev_err(&pdev->dev,
  			"failed to register GPU thermal sensor: %d\n", error);
  		goto err_unregister_cpu_sensor;
  	}
  
  	error = devm_request_threaded_irq(&pdev->dev, irq, NULL,
  					  &rockchip_thermal_alarm_irq_thread,
  					  IRQF_ONESHOT,
  					  "rockchip_thermal", thermal);
  	if (error) {
  		dev_err(&pdev->dev,
  			"failed to request tsadc irq: %d\n", error);
  		goto err_unregister_gpu_sensor;
  	}
  
  	thermal->chip->control(thermal->regs, true);
  
  	for (i = 0; i < ARRAY_SIZE(thermal->sensors); i++)
  		rockchip_thermal_toggle_sensor(&thermal->sensors[i], true);
  
  	platform_set_drvdata(pdev, thermal);
  
  	return 0;
  
  err_unregister_gpu_sensor:
  	thermal_zone_of_sensor_unregister(&pdev->dev, thermal->sensors[1].tzd);
  err_unregister_cpu_sensor:
  	thermal_zone_of_sensor_unregister(&pdev->dev, thermal->sensors[0].tzd);
  err_disable_pclk:
  	clk_disable_unprepare(thermal->pclk);
  err_disable_clk:
  	clk_disable_unprepare(thermal->clk);
  
  	return error;
  }
  
  static int rockchip_thermal_remove(struct platform_device *pdev)
  {
  	struct rockchip_thermal_data *thermal = platform_get_drvdata(pdev);
  	int i;
  
  	for (i = 0; i < ARRAY_SIZE(thermal->sensors); i++) {
  		struct rockchip_thermal_sensor *sensor = &thermal->sensors[i];
  
  		rockchip_thermal_toggle_sensor(sensor, false);
  		thermal_zone_of_sensor_unregister(&pdev->dev, sensor->tzd);
  	}
  
  	thermal->chip->control(thermal->regs, false);
  
  	clk_disable_unprepare(thermal->pclk);
  	clk_disable_unprepare(thermal->clk);
  
  	return 0;
  }
  
  static int __maybe_unused rockchip_thermal_suspend(struct device *dev)
  {
  	struct platform_device *pdev = to_platform_device(dev);
  	struct rockchip_thermal_data *thermal = platform_get_drvdata(pdev);
  	int i;
  
  	for (i = 0; i < ARRAY_SIZE(thermal->sensors); i++)
  		rockchip_thermal_toggle_sensor(&thermal->sensors[i], false);
  
  	thermal->chip->control(thermal->regs, false);
  
  	clk_disable(thermal->pclk);
  	clk_disable(thermal->clk);
  
  	return 0;
  }
  
  static int __maybe_unused rockchip_thermal_resume(struct device *dev)
  {
  	struct platform_device *pdev = to_platform_device(dev);
  	struct rockchip_thermal_data *thermal = platform_get_drvdata(pdev);
  	int i;
  	int error;
  
  	error = clk_enable(thermal->clk);
  	if (error)
  		return error;
  
  	error = clk_enable(thermal->pclk);
  	if (error)
  		return error;
  
  	rockchip_thermal_reset_controller(thermal->reset);
  
  	thermal->chip->initialize(thermal->regs, thermal->tshut_polarity);
  
  	for (i = 0; i < ARRAY_SIZE(thermal->sensors); i++) {
  		enum sensor_id id = thermal->sensors[i].id;
  
  		thermal->chip->set_tshut_mode(id, thermal->regs,
  					      thermal->tshut_mode);
  		thermal->chip->set_tshut_temp(id, thermal->regs,
  					      thermal->tshut_temp);
  	}
  
  	thermal->chip->control(thermal->regs, true);
  
  	for (i = 0; i < ARRAY_SIZE(thermal->sensors); i++)
  		rockchip_thermal_toggle_sensor(&thermal->sensors[i], true);
  
  	return 0;
  }
  
  static SIMPLE_DEV_PM_OPS(rockchip_thermal_pm_ops,
  			 rockchip_thermal_suspend, rockchip_thermal_resume);
  
  static struct platform_driver rockchip_thermal_driver = {
  	.driver = {
  		.name = "rockchip-thermal",
  		.pm = &rockchip_thermal_pm_ops,
  		.of_match_table = of_rockchip_thermal_match,
  	},
  	.probe = rockchip_thermal_probe,
  	.remove = rockchip_thermal_remove,
  };
  
  module_platform_driver(rockchip_thermal_driver);
  
  MODULE_DESCRIPTION("ROCKCHIP THERMAL Driver");
  MODULE_AUTHOR("Rockchip, Inc.");
  MODULE_LICENSE("GPL v2");
  MODULE_ALIAS("platform:rockchip-thermal");
  