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    SubjectRe: [PATCH v18 2/5] thermal: rockchip: add driver for thermal
    Hello edubezval,

    I saw your latest patch[0].
    I need send the new patch to fit the of-thermal Sensors API.
    Right?

    [0]: https://patchwork.kernel.org/patch/5324371/

    在 2014年11月12日 13:02, Caesar Wang 写道:
    > Thermal is TS-ADC Controller module supports
    > user-defined mode and automatic mode.
    >
    > User-defined mode refers,TSADC all the control signals entirely by
    > software writing to register for direct control.
    >
    > Automaic mode refers to the module automatically poll TSADC output,
    > and the results were checked.If you find that the temperature High
    > in a period of time,an interrupt is generated to the processor
    > down-measures taken;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.
    >
    > Signed-off-by: zhaoyifeng <zyf@rock-chips.com>
    > Signed-off-by: Caesar Wang <caesar.wang@rock-chips.com>
    > Reviewed-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
    > ---
    > drivers/thermal/Kconfig | 10 +
    > drivers/thermal/Makefile | 1 +
    > drivers/thermal/rockchip_thermal.c | 721 +++++++++++++++++++++++++++++++++++++
    > 3 files changed, 732 insertions(+)
    > create mode 100644 drivers/thermal/rockchip_thermal.c
    >
    > diff --git a/drivers/thermal/Kconfig b/drivers/thermal/Kconfig
    > index ef5587f..527632d 100644
    > --- a/drivers/thermal/Kconfig
    > +++ b/drivers/thermal/Kconfig
    > @@ -133,6 +133,16 @@ config SPEAR_THERMAL
    > Enable this to plug the SPEAr thermal sensor driver into the Linux
    > thermal framework.
    >
    > +config ROCKCHIP_THERMAL
    > + tristate "Rockchip thermal driver"
    > + depends on ARCH_ROCKCHIP
    > + depends on RESET_CONTROLLER
    > + help
    > + Rockchip thermal driver provides support for Temperature sensor
    > + ADC (TS-ADC) found on Rockchip SoCs. It supports one critical
    > + trip point. Cpufreq is used as the cooling device and will throttle
    > + CPUs when the Temperature crosses the passive trip point.
    > +
    > config RCAR_THERMAL
    > tristate "Renesas R-Car thermal driver"
    > depends on ARCH_SHMOBILE || COMPILE_TEST
    > diff --git a/drivers/thermal/Makefile b/drivers/thermal/Makefile
    > index 31e232f..21da0a8 100644
    > --- a/drivers/thermal/Makefile
    > +++ b/drivers/thermal/Makefile
    > @@ -19,6 +19,7 @@ thermal_sys-$(CONFIG_CPU_THERMAL) += cpu_cooling.o
    >
    > # platform thermal drivers
    > obj-$(CONFIG_SPEAR_THERMAL) += spear_thermal.o
    > +obj-$(CONFIG_ROCKCHIP_THERMAL) += rockchip_thermal.o
    > obj-$(CONFIG_RCAR_THERMAL) += rcar_thermal.o
    > obj-$(CONFIG_KIRKWOOD_THERMAL) += kirkwood_thermal.o
    > obj-y += samsung/
    > diff --git a/drivers/thermal/rockchip_thermal.c b/drivers/thermal/rockchip_thermal.c
    > new file mode 100644
    > index 0000000..524e3d6
    > --- /dev/null
    > +++ b/drivers/thermal/rockchip_thermal.c
    > @@ -0,0 +1,721 @@
    > +/*
    > + * 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_alarm_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_INT(chn) (0x30 + (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_alarm_temp(int chn, void __iomem *regs, long temp)
    > +{
    > + u32 alarm_value, int_en;
    > +
    > + alarm_value = rk_tsadcv2_temp_to_code(temp);
    > + writel_relaxed(alarm_value & TSADCV2_DATA_MASK,
    > + regs + TSADCV2_COMP_INT(chn));
    > +
    > + int_en = readl_relaxed(regs + TSADCV2_INT_EN);
    > + int_en |= TSADCV2_INT_SRC_EN(chn);
    > + writel_relaxed(int_en, regs + TSADCV2_INT_EN);
    > +}
    > +
    > +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_alarm_temp = rk_tsadcv2_alarm_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_set_trips(void *_sensor, long low, long high)
    > +{
    > + struct rockchip_thermal_sensor *sensor = _sensor;
    > + struct rockchip_thermal_data *thermal = sensor->thermal;
    > + const struct rockchip_tsadc_chip *tsadc = thermal->chip;
    > +
    > + dev_dbg(&thermal->pdev->dev, "%s: sensor %d: low: %ld, high %ld\n",
    > + __func__, sensor->id, low, high);
    > +
    > + tsadc->set_alarm_temp(sensor->id, thermal->regs, high);
    > +
    > + return 0;
    > +}
    > +
    > +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 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_thermal_get_temp,
    > + NULL,
    > + rockchip_thermal_set_trips);
    > + 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");

    --
    Best regards,
    Caesar


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