// SPDX-License-Identifier: GPL-2.0 // Copyright (c) 2014-2018 Nuvoton Technology corporation. #include <linux/clk.h> #include <linux/device.h> #include <linux/hwmon.h> #include <linux/hwmon-sysfs.h> #include <linux/interrupt.h> #include <linux/kernel.h> #include <linux/module.h> #include <linux/of_address.h> #include <linux/of_irq.h> #include <linux/platform_device.h> #include <linux/spinlock.h> #include <linux/sysfs.h> #include <linux/thermal.h> /* NPCM7XX PWM registers */ #define NPCM7XX_PWM_REG_BASE(base, n) … #define NPCM7XX_PWM_REG_PR(base, n) … #define NPCM7XX_PWM_REG_CSR(base, n) … #define NPCM7XX_PWM_REG_CR(base, n) … #define NPCM7XX_PWM_REG_CNRx(base, n, ch) … #define NPCM7XX_PWM_REG_CMRx(base, n, ch) … #define NPCM7XX_PWM_REG_PDRx(base, n, ch) … #define NPCM7XX_PWM_REG_PIER(base, n) … #define NPCM7XX_PWM_REG_PIIR(base, n) … #define NPCM7XX_PWM_CTRL_CH0_MODE_BIT … #define NPCM7XX_PWM_CTRL_CH1_MODE_BIT … #define NPCM7XX_PWM_CTRL_CH2_MODE_BIT … #define NPCM7XX_PWM_CTRL_CH3_MODE_BIT … #define NPCM7XX_PWM_CTRL_CH0_INV_BIT … #define NPCM7XX_PWM_CTRL_CH1_INV_BIT … #define NPCM7XX_PWM_CTRL_CH2_INV_BIT … #define NPCM7XX_PWM_CTRL_CH3_INV_BIT … #define NPCM7XX_PWM_CTRL_CH0_EN_BIT … #define NPCM7XX_PWM_CTRL_CH1_EN_BIT … #define NPCM7XX_PWM_CTRL_CH2_EN_BIT … #define NPCM7XX_PWM_CTRL_CH3_EN_BIT … /* Define the maximum PWM channel number */ #define NPCM7XX_PWM_MAX_CHN_NUM … #define NPCM7XX_PWM_MAX_CHN_NUM_IN_A_MODULE … #define NPCM7XX_PWM_MAX_MODULES … /* Define the Counter Register, value = 100 for match 100% */ #define NPCM7XX_PWM_COUNTER_DEFAULT_NUM … #define NPCM7XX_PWM_CMR_DEFAULT_NUM … #define NPCM7XX_PWM_CMR_MAX … /* default all PWM channels PRESCALE2 = 1 */ #define NPCM7XX_PWM_PRESCALE2_DEFAULT_CH0 … #define NPCM7XX_PWM_PRESCALE2_DEFAULT_CH1 … #define NPCM7XX_PWM_PRESCALE2_DEFAULT_CH2 … #define NPCM7XX_PWM_PRESCALE2_DEFAULT_CH3 … #define PWM_OUTPUT_FREQ_25KHZ … #define PWN_CNT_DEFAULT … #define MIN_PRESCALE1 … #define NPCM7XX_PWM_PRESCALE_SHIFT_CH01 … #define NPCM7XX_PWM_PRESCALE2_DEFAULT … #define NPCM7XX_PWM_CTRL_MODE_DEFAULT … /* NPCM7XX FAN Tacho registers */ #define NPCM7XX_FAN_REG_BASE(base, n) … #define NPCM7XX_FAN_REG_TCNT1(base, n) … #define NPCM7XX_FAN_REG_TCRA(base, n) … #define NPCM7XX_FAN_REG_TCRB(base, n) … #define NPCM7XX_FAN_REG_TCNT2(base, n) … #define NPCM7XX_FAN_REG_TPRSC(base, n) … #define NPCM7XX_FAN_REG_TCKC(base, n) … #define NPCM7XX_FAN_REG_TMCTRL(base, n) … #define NPCM7XX_FAN_REG_TICTRL(base, n) … #define NPCM7XX_FAN_REG_TICLR(base, n) … #define NPCM7XX_FAN_REG_TIEN(base, n) … #define NPCM7XX_FAN_REG_TCPA(base, n) … #define NPCM7XX_FAN_REG_TCPB(base, n) … #define NPCM7XX_FAN_REG_TCPCFG(base, n) … #define NPCM7XX_FAN_REG_TINASEL(base, n) … #define NPCM7XX_FAN_REG_TINBSEL(base, n) … #define NPCM7XX_FAN_TCKC_CLKX_NONE … #define NPCM7XX_FAN_TCKC_CLK1_APB … #define NPCM7XX_FAN_TCKC_CLK2_APB … #define NPCM7XX_FAN_TMCTRL_TBEN … #define NPCM7XX_FAN_TMCTRL_TAEN … #define NPCM7XX_FAN_TMCTRL_TBEDG … #define NPCM7XX_FAN_TMCTRL_TAEDG … #define NPCM7XX_FAN_TMCTRL_MODE_5 … #define NPCM7XX_FAN_TICLR_CLEAR_ALL … #define NPCM7XX_FAN_TICLR_TFCLR … #define NPCM7XX_FAN_TICLR_TECLR … #define NPCM7XX_FAN_TICLR_TDCLR … #define NPCM7XX_FAN_TICLR_TCCLR … #define NPCM7XX_FAN_TICLR_TBCLR … #define NPCM7XX_FAN_TICLR_TACLR … #define NPCM7XX_FAN_TIEN_ENABLE_ALL … #define NPCM7XX_FAN_TIEN_TFIEN … #define NPCM7XX_FAN_TIEN_TEIEN … #define NPCM7XX_FAN_TIEN_TDIEN … #define NPCM7XX_FAN_TIEN_TCIEN … #define NPCM7XX_FAN_TIEN_TBIEN … #define NPCM7XX_FAN_TIEN_TAIEN … #define NPCM7XX_FAN_TICTRL_TFPND … #define NPCM7XX_FAN_TICTRL_TEPND … #define NPCM7XX_FAN_TICTRL_TDPND … #define NPCM7XX_FAN_TICTRL_TCPND … #define NPCM7XX_FAN_TICTRL_TBPND … #define NPCM7XX_FAN_TICTRL_TAPND … #define NPCM7XX_FAN_TCPCFG_HIBEN … #define NPCM7XX_FAN_TCPCFG_EQBEN … #define NPCM7XX_FAN_TCPCFG_LOBEN … #define NPCM7XX_FAN_TCPCFG_CPBSEL … #define NPCM7XX_FAN_TCPCFG_HIAEN … #define NPCM7XX_FAN_TCPCFG_EQAEN … #define NPCM7XX_FAN_TCPCFG_LOAEN … #define NPCM7XX_FAN_TCPCFG_CPASEL … /* FAN General Definition */ /* Define the maximum FAN channel number */ #define NPCM7XX_FAN_MAX_MODULE … #define NPCM7XX_FAN_MAX_CHN_NUM_IN_A_MODULE … #define NPCM7XX_FAN_MAX_CHN_NUM … /* * Get Fan Tach Timeout (base on clock 214843.75Hz, 1 cnt = 4.654us) * Timeout 94ms ~= 0x5000 * (The minimum FAN speed could to support ~640RPM/pulse 1, * 320RPM/pulse 2, ...-- 10.6Hz) */ #define NPCM7XX_FAN_TIMEOUT … #define NPCM7XX_FAN_TCNT … #define NPCM7XX_FAN_TCPA … #define NPCM7XX_FAN_TCPB … #define NPCM7XX_FAN_POLL_TIMER_200MS … #define NPCM7XX_FAN_DEFAULT_PULSE_PER_REVOLUTION … #define NPCM7XX_FAN_TINASEL_FANIN_DEFAULT … #define NPCM7XX_FAN_CLK_PRESCALE … #define NPCM7XX_FAN_CMPA … #define NPCM7XX_FAN_CMPB … /* Obtain the fan number */ #define NPCM7XX_FAN_INPUT(fan, cmp) … /* fan sample status */ #define FAN_DISABLE … #define FAN_INIT … #define FAN_PREPARE_TO_GET_FIRST_CAPTURE … #define FAN_ENOUGH_SAMPLE … struct npcm_hwmon_info { … }; struct npcm7xx_fan_dev { … }; struct npcm7xx_cooling_device { … }; struct npcm7xx_pwm_fan_data { … }; static int npcm7xx_pwm_config_set(struct npcm7xx_pwm_fan_data *data, int channel, u16 val) { … } static inline void npcm7xx_fan_start_capture(struct npcm7xx_pwm_fan_data *data, u8 fan, u8 cmp) { … } /* * Enable a background timer to poll fan tach value, (200ms * 4) * to polling all fan */ static void npcm7xx_fan_polling(struct timer_list *t) { … } static inline void npcm7xx_fan_compute(struct npcm7xx_pwm_fan_data *data, u8 fan, u8 cmp, u8 fan_id, u8 flag_int, u8 flag_mode, u8 flag_clear) { … } static inline void npcm7xx_check_cmp(struct npcm7xx_pwm_fan_data *data, u8 fan, u8 cmp, u8 flag) { … } static irqreturn_t npcm7xx_fan_isr(int irq, void *dev_id) { … } static int npcm7xx_read_pwm(struct device *dev, u32 attr, int channel, long *val) { … } static int npcm7xx_write_pwm(struct device *dev, u32 attr, int channel, long val) { … } static umode_t npcm7xx_pwm_is_visible(const void *_data, u32 attr, int channel) { … } static int npcm7xx_read_fan(struct device *dev, u32 attr, int channel, long *val) { … } static umode_t npcm7xx_fan_is_visible(const void *_data, u32 attr, int channel) { … } static int npcm7xx_read(struct device *dev, enum hwmon_sensor_types type, u32 attr, int channel, long *val) { … } static int npcm7xx_write(struct device *dev, enum hwmon_sensor_types type, u32 attr, int channel, long val) { … } static umode_t npcm7xx_is_visible(const void *data, enum hwmon_sensor_types type, u32 attr, int channel) { … } static const struct hwmon_channel_info * const npcm7xx_info[] = …; static const struct hwmon_ops npcm7xx_hwmon_ops = …; static const struct hwmon_chip_info npcm7xx_chip_info = …; static const struct npcm_hwmon_info npxm7xx_hwmon_info = …; static const struct npcm_hwmon_info npxm8xx_hwmon_info = …; static u32 npcm7xx_pwm_init(struct npcm7xx_pwm_fan_data *data) { … } static void npcm7xx_fan_init(struct npcm7xx_pwm_fan_data *data) { … } static int npcm7xx_pwm_cz_get_max_state(struct thermal_cooling_device *tcdev, unsigned long *state) { … } static int npcm7xx_pwm_cz_get_cur_state(struct thermal_cooling_device *tcdev, unsigned long *state) { … } static int npcm7xx_pwm_cz_set_cur_state(struct thermal_cooling_device *tcdev, unsigned long state) { … } static const struct thermal_cooling_device_ops npcm7xx_pwm_cool_ops = …; static int npcm7xx_create_pwm_cooling(struct device *dev, struct device_node *child, struct npcm7xx_pwm_fan_data *data, u32 pwm_port, u8 num_levels) { … } static int npcm7xx_en_pwm_fan(struct device *dev, struct device_node *child, struct npcm7xx_pwm_fan_data *data) { … } static int npcm7xx_pwm_fan_probe(struct platform_device *pdev) { … } static const struct of_device_id of_pwm_fan_match_table[] = …; MODULE_DEVICE_TABLE(of, of_pwm_fan_match_table); static struct platform_driver npcm7xx_pwm_fan_driver = …; module_platform_driver(…) …; MODULE_DESCRIPTION(…) …; MODULE_AUTHOR(…) …; MODULE_LICENSE(…) …;
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