Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/evalenti/linux-soc-thermal into eduardo-soc-thermal

1 files changed, 693 insertions, 0 deletions

diff --git a/drivers/thermal/rockchip_thermal.c b/drivers/thermal/rockchip_thermal.c
new file mode 100644
index 000000000000..1bcddfc60e91
--- /dev/null
+++ b/drivers/thermal/rockchip_thermal.c
@@ -0,0 +1,693 @@
+/*
+ * 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)
+{
+	int high, low, mid;
+
+	low = 0;
+	high = ARRAY_SIZE(v2_code_table) - 1;
+	mid = (high + low) / 2;
+
+	if (code > v2_code_table[low].code || code < v2_code_table[high].code)
+		return 125000; /* No code available, return max temperature */
+
+	while (low <= high) {
+		if (code >= v2_code_table[mid].code && code <
+		    v2_code_table[mid - 1].code)
+			return v2_code_table[mid].temp;
+		else if (code < v2_code_table[mid].code)
+			low = mid + 1;
+		else
+			high = mid - 1;
+		mid = (low + high) / 2;
+	}
+
+	return 125000;
+}
+
+/**
+ * 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->clk);
+		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",
+		.owner = THIS_MODULE,
+		.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");