// SPDX-License-Identifier: GPL-2.0-only /* * Copyright (c) 2014-2016, Fuzhou Rockchip Electronics Co., Ltd * Caesar Wang <[email protected]> */ #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/regmap.h> #include <linux/reset.h> #include <linux/thermal.h> #include <linux/mfd/syscon.h> #include <linux/pinctrl/consumer.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 { … }; /* * The system Temperature Sensors tshut(tshut) polarity * the bit 8 is tshut polarity. * 0: low active, 1: high active */ enum tshut_polarity { … }; /* * The conversion table has the adc value and temperature. * ADC_DECREMENT: the adc value is of diminishing.(e.g. rk3288_code_table) * ADC_INCREMENT: the adc value is incremental.(e.g. rk3368_code_table) */ enum adc_sort_mode { … }; #include "thermal_hwmon.h" /** * struct chip_tsadc_table - hold information about chip-specific differences * @id: conversion table * @length: size of conversion table * @data_mask: mask to apply on data inputs * @mode: sort mode of this adc variant (incrementing or decrementing) */ struct chip_tsadc_table { … }; /** * struct rockchip_tsadc_chip - hold the private data of tsadc chip * @chn_offset: the channel offset of the first channel * @chn_num: the channel number of tsadc chip * @tshut_temp: the hardware-controlled shutdown temperature value * @tshut_mode: the hardware-controlled shutdown mode (0:CRU 1:GPIO) * @tshut_polarity: the hardware-controlled active polarity (0:LOW 1:HIGH) * @initialize: SoC special initialize tsadc controller method * @irq_ack: clear the interrupt * @control: enable/disable method for the tsadc controller * @get_temp: get the temperature * @set_alarm_temp: set the high temperature interrupt * @set_tshut_temp: set the hardware-controlled shutdown temperature * @set_tshut_mode: set the hardware-controlled shutdown mode * @table: the chip-specific conversion table */ struct rockchip_tsadc_chip { … }; /** * struct rockchip_thermal_sensor - hold the information of thermal sensor * @thermal: pointer to the platform/configuration data * @tzd: pointer to a thermal zone * @id: identifier of the thermal sensor */ struct rockchip_thermal_sensor { … }; /** * struct rockchip_thermal_data - hold the private data of thermal driver * @chip: pointer to the platform/configuration data * @pdev: platform device of thermal * @reset: the reset controller of tsadc * @sensors: array of thermal sensors * @clk: the controller clock is divided by the exteral 24MHz * @pclk: the advanced peripherals bus clock * @grf: the general register file will be used to do static set by software * @regs: the base address of tsadc controller * @tshut_temp: the hardware-controlled shutdown temperature value * @tshut_mode: the hardware-controlled shutdown mode (0:CRU 1:GPIO) * @tshut_polarity: the hardware-controlled active polarity (0:LOW 1:HIGH) */ struct rockchip_thermal_data { … }; /* * TSADC Sensor Register description: * * TSADCV2_* are used for RK3288 SoCs, the other chips can reuse it. * TSADCV3_* are used for newer SoCs than RK3288. (e.g: RK3228, RK3399) * */ #define TSADCV2_USER_CON … #define TSADCV2_AUTO_CON … #define TSADCV2_INT_EN … #define TSADCV2_INT_PD … #define TSADCV3_AUTO_SRC_CON … #define TSADCV3_HT_INT_EN … #define TSADCV3_HSHUT_GPIO_INT_EN … #define TSADCV3_HSHUT_CRU_INT_EN … #define TSADCV3_INT_PD … #define TSADCV3_HSHUT_PD … #define TSADCV2_DATA(chn) … #define TSADCV2_COMP_INT(chn) … #define TSADCV2_COMP_SHUT(chn) … #define TSADCV3_DATA(chn) … #define TSADCV3_COMP_INT(chn) … #define TSADCV3_COMP_SHUT(chn) … #define TSADCV2_HIGHT_INT_DEBOUNCE … #define TSADCV2_HIGHT_TSHUT_DEBOUNCE … #define TSADCV3_HIGHT_INT_DEBOUNCE … #define TSADCV3_HIGHT_TSHUT_DEBOUNCE … #define TSADCV2_AUTO_PERIOD … #define TSADCV2_AUTO_PERIOD_HT … #define TSADCV3_AUTO_PERIOD … #define TSADCV3_AUTO_PERIOD_HT … #define TSADCV2_AUTO_EN … #define TSADCV2_AUTO_EN_MASK … #define TSADCV2_AUTO_SRC_EN(chn) … #define TSADCV3_AUTO_SRC_EN(chn) … #define TSADCV3_AUTO_SRC_EN_MASK(chn) … #define TSADCV2_AUTO_TSHUT_POLARITY_HIGH … #define TSADCV2_AUTO_TSHUT_POLARITY_MASK … #define TSADCV3_AUTO_Q_SEL_EN … #define TSADCV2_INT_SRC_EN(chn) … #define TSADCV2_INT_SRC_EN_MASK(chn) … #define TSADCV2_SHUT_2GPIO_SRC_EN(chn) … #define TSADCV2_SHUT_2CRU_SRC_EN(chn) … #define TSADCV2_INT_PD_CLEAR_MASK … #define TSADCV3_INT_PD_CLEAR_MASK … #define TSADCV4_INT_PD_CLEAR_MASK … #define TSADCV2_DATA_MASK … #define TSADCV3_DATA_MASK … #define TSADCV4_DATA_MASK … #define TSADCV2_HIGHT_INT_DEBOUNCE_COUNT … #define TSADCV2_HIGHT_TSHUT_DEBOUNCE_COUNT … #define TSADCV2_AUTO_PERIOD_TIME … #define TSADCV2_AUTO_PERIOD_HT_TIME … #define TSADCV3_AUTO_PERIOD_TIME … #define TSADCV3_AUTO_PERIOD_HT_TIME … #define TSADCV5_AUTO_PERIOD_TIME … #define TSADCV5_AUTO_PERIOD_HT_TIME … #define TSADCV6_AUTO_PERIOD_TIME … #define TSADCV6_AUTO_PERIOD_HT_TIME … #define TSADCV2_USER_INTER_PD_SOC … #define TSADCV5_USER_INTER_PD_SOC … #define GRF_SARADC_TESTBIT … #define GRF_TSADC_TESTBIT_L … #define GRF_TSADC_TESTBIT_H … #define PX30_GRF_SOC_CON2 … #define RK3568_GRF_TSADC_CON … #define RK3568_GRF_TSADC_ANA_REG0 … #define RK3568_GRF_TSADC_ANA_REG1 … #define RK3568_GRF_TSADC_ANA_REG2 … #define RK3568_GRF_TSADC_TSEN … #define RK3588_GRF0_TSADC_CON … #define RK3588_GRF0_TSADC_TRM … #define RK3588_GRF0_TSADC_SHUT_2CRU … #define RK3588_GRF0_TSADC_SHUT_2GPIO … #define GRF_SARADC_TESTBIT_ON … #define GRF_TSADC_TESTBIT_H_ON … #define GRF_TSADC_VCM_EN_L … #define GRF_TSADC_VCM_EN_H … #define GRF_CON_TSADC_CH_INV … /** * struct tsadc_table - code to temperature conversion table * @code: the value of adc channel * @temp: the temperature * Note: * code to temperature mapping of the temperature sensor is a piece wise linear * curve.Any temperature, code faling between to 2 give temperatures can be * linearly interpolated. * Code to Temperature mapping should be updated based on manufacturer results. */ struct tsadc_table { … }; static const struct tsadc_table rv1108_table[] = …; static const struct tsadc_table rk3228_code_table[] = …; static const struct tsadc_table rk3288_code_table[] = …; static const struct tsadc_table rk3328_code_table[] = …; static const struct tsadc_table rk3368_code_table[] = …; static const struct tsadc_table rk3399_code_table[] = …; static const struct tsadc_table rk3568_code_table[] = …; static const struct tsadc_table rk3588_code_table[] = …; static u32 rk_tsadcv2_temp_to_code(const struct chip_tsadc_table *table, int temp) { … } static int rk_tsadcv2_code_to_temp(const struct chip_tsadc_table *table, u32 code, int *temp) { … } /** * rk_tsadcv2_initialize - initialize TASDC Controller. * @grf: the general register file will be used to do static set by software * @regs: the base address of tsadc controller * @tshut_polarity: the hardware-controlled active polarity (0:LOW 1:HIGH) * * (1) Set TSADC_V2_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(struct regmap *grf, void __iomem *regs, enum tshut_polarity tshut_polarity) { … } /** * rk_tsadcv3_initialize - initialize TASDC Controller. * @grf: the general register file will be used to do static set by software * @regs: the base address of tsadc controller * @tshut_polarity: the hardware-controlled active polarity (0:LOW 1:HIGH) * * (1) The tsadc control power sequence. * * (2) Set TSADC_V2_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_tsadcv3_initialize(struct regmap *grf, void __iomem *regs, enum tshut_polarity tshut_polarity) { … } static void rk_tsadcv4_initialize(struct regmap *grf, void __iomem *regs, enum tshut_polarity tshut_polarity) { … } static void rk_tsadcv7_initialize(struct regmap *grf, void __iomem *regs, enum tshut_polarity tshut_polarity) { … } static void rk_tsadcv8_initialize(struct regmap *grf, void __iomem *regs, enum tshut_polarity tshut_polarity) { … } static void rk_tsadcv2_irq_ack(void __iomem *regs) { … } static void rk_tsadcv3_irq_ack(void __iomem *regs) { … } static void rk_tsadcv4_irq_ack(void __iomem *regs) { … } static void rk_tsadcv2_control(void __iomem *regs, bool enable) { … } /** * rk_tsadcv3_control - the tsadc controller is enabled or disabled. * @regs: the base address of tsadc controller * @enable: boolean flag to enable the controller * * NOTE: TSADC controller works at auto mode, and some SoCs need set the * tsadc_q_sel bit on TSADCV2_AUTO_CON[1]. The (1024 - tsadc_q) as output * adc value if setting this bit to enable. */ static void rk_tsadcv3_control(void __iomem *regs, bool enable) { … } static void rk_tsadcv4_control(void __iomem *regs, bool enable) { … } static int rk_tsadcv2_get_temp(const struct chip_tsadc_table *table, int chn, void __iomem *regs, int *temp) { … } static int rk_tsadcv4_get_temp(const struct chip_tsadc_table *table, int chn, void __iomem *regs, int *temp) { … } static int rk_tsadcv2_alarm_temp(const struct chip_tsadc_table *table, int chn, void __iomem *regs, int temp) { … } static int rk_tsadcv3_alarm_temp(const struct chip_tsadc_table *table, int chn, void __iomem *regs, int temp) { … } static int rk_tsadcv2_tshut_temp(const struct chip_tsadc_table *table, int chn, void __iomem *regs, int temp) { … } static int rk_tsadcv3_tshut_temp(const struct chip_tsadc_table *table, int chn, void __iomem *regs, int temp) { … } static void rk_tsadcv2_tshut_mode(int chn, void __iomem *regs, enum tshut_mode mode) { … } static void rk_tsadcv3_tshut_mode(int chn, void __iomem *regs, enum tshut_mode mode) { … } static const struct rockchip_tsadc_chip px30_tsadc_data = …; static const struct rockchip_tsadc_chip rv1108_tsadc_data = …; static const struct rockchip_tsadc_chip rk3228_tsadc_data = …; static const struct rockchip_tsadc_chip rk3288_tsadc_data = …; static const struct rockchip_tsadc_chip rk3328_tsadc_data = …; static const struct rockchip_tsadc_chip rk3366_tsadc_data = …; static const struct rockchip_tsadc_chip rk3368_tsadc_data = …; static const struct rockchip_tsadc_chip rk3399_tsadc_data = …; static const struct rockchip_tsadc_chip rk3568_tsadc_data = …; static const struct rockchip_tsadc_chip rk3588_tsadc_data = …; static const struct of_device_id of_rockchip_thermal_match[] = …; MODULE_DEVICE_TABLE(of, of_rockchip_thermal_match); static void rockchip_thermal_toggle_sensor(struct rockchip_thermal_sensor *sensor, bool on) { … } static irqreturn_t rockchip_thermal_alarm_irq_thread(int irq, void *dev) { … } static int rockchip_thermal_set_trips(struct thermal_zone_device *tz, int low, int high) { … } static int rockchip_thermal_get_temp(struct thermal_zone_device *tz, int *out_temp) { … } static const struct thermal_zone_device_ops rockchip_of_thermal_ops = …; static int rockchip_configure_from_dt(struct device *dev, struct device_node *np, struct rockchip_thermal_data *thermal) { … } static int rockchip_thermal_register_sensor(struct platform_device *pdev, struct rockchip_thermal_data *thermal, struct rockchip_thermal_sensor *sensor, int id) { … } /** * rockchip_thermal_reset_controller - Reset TSADC Controller, reset all tsadc registers. * @reset: the reset controller of tsadc */ static void rockchip_thermal_reset_controller(struct reset_control *reset) { … } static int rockchip_thermal_probe(struct platform_device *pdev) { … } static void rockchip_thermal_remove(struct platform_device *pdev) { … } static int __maybe_unused rockchip_thermal_suspend(struct device *dev) { … } static int __maybe_unused rockchip_thermal_resume(struct device *dev) { … } static SIMPLE_DEV_PM_OPS(rockchip_thermal_pm_ops, rockchip_thermal_suspend, rockchip_thermal_resume); static struct platform_driver rockchip_thermal_driver = …; module_platform_driver(…) …; MODULE_DESCRIPTION(…) …; MODULE_AUTHOR(…) …; MODULE_LICENSE(…) …; MODULE_ALIAS(…) …;
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