drivers/hwmon/nct6775.h - linux - Git at Google

 /* SPDX-License-Identifier: GPL-2.0-or-later */
 #ifndef __HWMON_NCT6775_H__
 #define __HWMON_NCT6775_H__

 #include <linux/types.h>

 enum kinds { nct6106, nct6116, nct6775, nct6776, nct6779, nct6791, nct6792,
 	     nct6793, nct6795, nct6796, nct6797, nct6798 };
 enum pwm_enable { off, manual, thermal_cruise, speed_cruise, sf3, sf4 };

 #define NUM_TEMP	10	/* Max number of temp attribute sets w/ limits*/
 #define NUM_TEMP_FIXED	6	/* Max number of fixed temp attribute sets */
 #define NUM_TSI_TEMP	8	/* Max number of TSI temp register pairs */

 #define NUM_REG_ALARM	7	/* Max number of alarm registers */
 #define NUM_REG_BEEP	5	/* Max number of beep registers */

 #define NUM_FAN		7

 struct nct6775_data {
 	int addr;	/* IO base of hw monitor block */
 	int sioreg;	/* SIO register address */
 	enum kinds kind;
 	const char *name;

 	const struct attribute_group *groups[7];
 	u8 num_groups;

 	u16 reg_temp[5][NUM_TEMP]; /* 0=temp, 1=temp_over, 2=temp_hyst,
 				    * 3=temp_crit, 4=temp_lcrit
 				    */
 	u8 temp_src[NUM_TEMP];
 	u16 reg_temp_config[NUM_TEMP];
 	const char * const *temp_label;
 	u32 temp_mask;
 	u32 virt_temp_mask;

 	u16 REG_CONFIG;
 	u16 REG_VBAT;
 	u16 REG_DIODE;
 	u8 DIODE_MASK;

 	const s8 *ALARM_BITS;
 	const s8 *BEEP_BITS;

 	const u16 *REG_VIN;
 	const u16 *REG_IN_MINMAX[2];

 	const u16 *REG_TARGET;
 	const u16 *REG_FAN;
 	const u16 *REG_FAN_MODE;
 	const u16 *REG_FAN_MIN;
 	const u16 *REG_FAN_PULSES;
 	const u16 *FAN_PULSE_SHIFT;
 	const u16 *REG_FAN_TIME[3];

 	const u16 *REG_TOLERANCE_H;

 	const u8 *REG_PWM_MODE;
 	const u8 *PWM_MODE_MASK;

 	const u16 *REG_PWM[7];	/* [0]=pwm, [1]=pwm_start, [2]=pwm_floor,
 				 * [3]=pwm_max, [4]=pwm_step,
 				 * [5]=weight_duty_step, [6]=weight_duty_base
 				 */
 	const u16 *REG_PWM_READ;

 	const u16 *REG_CRITICAL_PWM_ENABLE;
 	u8 CRITICAL_PWM_ENABLE_MASK;
 	const u16 *REG_CRITICAL_PWM;

 	const u16 *REG_AUTO_TEMP;
 	const u16 *REG_AUTO_PWM;

 	const u16 *REG_CRITICAL_TEMP;
 	const u16 *REG_CRITICAL_TEMP_TOLERANCE;

 	const u16 *REG_TEMP_SOURCE;	/* temp register sources */
 	const u16 *REG_TEMP_SEL;
 	const u16 *REG_WEIGHT_TEMP_SEL;
 	const u16 *REG_WEIGHT_TEMP[3];	/* 0=base, 1=tolerance, 2=step */

 	const u16 *REG_TEMP_OFFSET;

 	const u16 *REG_ALARM;
 	const u16 *REG_BEEP;

 	const u16 *REG_TSI_TEMP;

 	unsigned int (*fan_from_reg)(u16 reg, unsigned int divreg);
 	unsigned int (*fan_from_reg_min)(u16 reg, unsigned int divreg);

 	struct mutex update_lock;
 	bool valid;		/* true if following fields are valid */
 	unsigned long last_updated;	/* In jiffies */

 	/* Register values */
 	u8 bank;		/* current register bank */
 	u8 in_num;		/* number of in inputs we have */
 	u8 in[15][3];		/* [0]=in, [1]=in_max, [2]=in_min */
 	unsigned int rpm[NUM_FAN];
 	u16 fan_min[NUM_FAN];
 	u8 fan_pulses[NUM_FAN];
 	u8 fan_div[NUM_FAN];
 	u8 has_pwm;
 	u8 has_fan;		/* some fan inputs can be disabled */
 	u8 has_fan_min;		/* some fans don't have min register */
 	bool has_fan_div;

 	u8 num_temp_alarms;	/* 2, 3, or 6 */
 	u8 num_temp_beeps;	/* 2, 3, or 6 */
 	u8 temp_fixed_num;	/* 3 or 6 */
 	u8 temp_type[NUM_TEMP_FIXED];
 	s8 temp_offset[NUM_TEMP_FIXED];
 	s16 temp[5][NUM_TEMP]; /* 0=temp, 1=temp_over, 2=temp_hyst,
 				* 3=temp_crit, 4=temp_lcrit
 				*/
 	s16 tsi_temp[NUM_TSI_TEMP];
 	u64 alarms;
 	u64 beeps;

 	u8 pwm_num;	/* number of pwm */
 	u8 pwm_mode[NUM_FAN];	/* 0->DC variable voltage,
 				 * 1->PWM variable duty cycle
 				 */
 	enum pwm_enable pwm_enable[NUM_FAN];
 			/* 0->off
 			 * 1->manual
 			 * 2->thermal cruise mode (also called SmartFan I)
 			 * 3->fan speed cruise mode
 			 * 4->SmartFan III
 			 * 5->enhanced variable thermal cruise (SmartFan IV)
 			 */
 	u8 pwm[7][NUM_FAN];	/* [0]=pwm, [1]=pwm_start, [2]=pwm_floor,
 				 * [3]=pwm_max, [4]=pwm_step,
 				 * [5]=weight_duty_step, [6]=weight_duty_base
 				 */

 	u8 target_temp[NUM_FAN];
 	u8 target_temp_mask;
 	u32 target_speed[NUM_FAN];
 	u32 target_speed_tolerance[NUM_FAN];
 	u8 speed_tolerance_limit;

 	u8 temp_tolerance[2][NUM_FAN];
 	u8 tolerance_mask;

 	u8 fan_time[3][NUM_FAN]; /* 0 = stop_time, 1 = step_up, 2 = step_down */

 	/* Automatic fan speed control registers */
 	int auto_pwm_num;
 	u8 auto_pwm[NUM_FAN][7];
 	u8 auto_temp[NUM_FAN][7];
 	u8 pwm_temp_sel[NUM_FAN];
 	u8 pwm_weight_temp_sel[NUM_FAN];
 	u8 weight_temp[3][NUM_FAN];	/* 0->temp_step, 1->temp_step_tol,
 					 * 2->temp_base
 					 */

 	u8 vid;
 	u8 vrm;

 	bool have_vid;

 	u16 have_temp;
 	u16 have_temp_fixed;
 	u16 have_tsi_temp;
 	u16 have_in;

 	/* Remember extra register values over suspend/resume */
 	u8 vbat;
 	u8 fandiv1;
 	u8 fandiv2;
 	u8 sio_reg_enable;

 	struct regmap *regmap;
 	bool read_only;

 	/* driver-specific (platform, i2c) initialization hook and data */
 	int (*driver_init)(struct nct6775_data *data);
 	void *driver_data;
 };

 static inline int nct6775_read_value(struct nct6775_data *data, u16 reg, u16 *value)
 {
 	unsigned int tmp;
 	int ret = regmap_read(data->regmap, reg, &tmp);

 	if (!ret)
 		*value = tmp;
 	return ret;
 }

 static inline int nct6775_write_value(struct nct6775_data *data, u16 reg, u16 value)
 {
 	return regmap_write(data->regmap, reg, value);
 }

 bool nct6775_reg_is_word_sized(struct nct6775_data *data, u16 reg);
 int nct6775_probe(struct device *dev, struct nct6775_data *data,
 		  const struct regmap_config *regmapcfg);

 ssize_t nct6775_show_alarm(struct device *dev, struct device_attribute *attr, char *buf);
 ssize_t nct6775_show_beep(struct device *dev, struct device_attribute *attr, char *buf);
 ssize_t nct6775_store_beep(struct device *dev, struct device_attribute *attr, const char *buf,
 			   size_t count);

 static inline int nct6775_write_temp(struct nct6775_data *data, u16 reg, u16 value)
 {
 	if (!nct6775_reg_is_word_sized(data, reg))
 		value >>= 8;
 	return nct6775_write_value(data, reg, value);
 }

 static inline umode_t nct6775_attr_mode(struct nct6775_data *data, struct attribute *attr)
 {
 	return data->read_only ? (attr->mode & ~0222) : attr->mode;
 }

 static inline int
 nct6775_add_attr_group(struct nct6775_data *data, const struct attribute_group *group)
 {
 	/* Need to leave a NULL terminator at the end of data->groups */
 	if (data->num_groups == ARRAY_SIZE(data->groups) - 1)
 		return -ENOBUFS;

 	data->groups[data->num_groups++] = group;
 	return 0;
 }

 #define NCT6775_REG_BANK	0x4E
 #define NCT6775_REG_CONFIG	0x40

 #define NCT6775_REG_FANDIV1		0x506
 #define NCT6775_REG_FANDIV2		0x507

 #define NCT6791_REG_HM_IO_SPACE_LOCK_ENABLE	0x28

 #define FAN_ALARM_BASE		16
 #define TEMP_ALARM_BASE		24
 #define INTRUSION_ALARM_BASE	30
 #define BEEP_ENABLE_BASE	15

 /*
  * Not currently used:
  * REG_MAN_ID has the value 0x5ca3 for all supported chips.
  * REG_CHIP_ID == 0x88/0xa1/0xc1 depending on chip model.
  * REG_MAN_ID is at port 0x4f
  * REG_CHIP_ID is at port 0x58
  */

 #endif /* __HWMON_NCT6775_H__ */
	/* SPDX-License-Identifier: GPL-2.0-or-later */
	#ifndef __HWMON_NCT6775_H__
	#define __HWMON_NCT6775_H__

	#include <linux/types.h>

	enum kinds { nct6106, nct6116, nct6775, nct6776, nct6779, nct6791, nct6792,
	nct6793, nct6795, nct6796, nct6797, nct6798 };
	enum pwm_enable { off, manual, thermal_cruise, speed_cruise, sf3, sf4 };

	#define NUM_TEMP 10 /* Max number of temp attribute sets w/ limits*/
	#define NUM_TEMP_FIXED 6 /* Max number of fixed temp attribute sets */
	#define NUM_TSI_TEMP 8 /* Max number of TSI temp register pairs */

	#define NUM_REG_ALARM 7 /* Max number of alarm registers */
	#define NUM_REG_BEEP 5 /* Max number of beep registers */

	#define NUM_FAN 7

	struct nct6775_data {
	int addr; /* IO base of hw monitor block */
	int sioreg; /* SIO register address */
	enum kinds kind;
	const char *name;

	const struct attribute_group *groups[7];
	u8 num_groups;

	u16 reg_temp[5][NUM_TEMP]; /* 0=temp, 1=temp_over, 2=temp_hyst,
	* 3=temp_crit, 4=temp_lcrit
	*/
	u8 temp_src[NUM_TEMP];
	u16 reg_temp_config[NUM_TEMP];
	const char * const *temp_label;
	u32 temp_mask;
	u32 virt_temp_mask;

	u16 REG_CONFIG;
	u16 REG_VBAT;
	u16 REG_DIODE;
	u8 DIODE_MASK;

	const s8 *ALARM_BITS;
	const s8 *BEEP_BITS;

	const u16 *REG_VIN;
	const u16 *REG_IN_MINMAX[2];

	const u16 *REG_TARGET;
	const u16 *REG_FAN;
	const u16 *REG_FAN_MODE;
	const u16 *REG_FAN_MIN;
	const u16 *REG_FAN_PULSES;
	const u16 *FAN_PULSE_SHIFT;
	const u16 *REG_FAN_TIME[3];

	const u16 *REG_TOLERANCE_H;

	const u8 *REG_PWM_MODE;
	const u8 *PWM_MODE_MASK;

	const u16 REG_PWM[7]; / [0]=pwm, [1]=pwm_start, [2]=pwm_floor,
	* [3]=pwm_max, [4]=pwm_step,
	* [5]=weight_duty_step, [6]=weight_duty_base
	*/
	const u16 *REG_PWM_READ;

	const u16 *REG_CRITICAL_PWM_ENABLE;
	u8 CRITICAL_PWM_ENABLE_MASK;
	const u16 *REG_CRITICAL_PWM;

	const u16 *REG_AUTO_TEMP;
	const u16 *REG_AUTO_PWM;

	const u16 *REG_CRITICAL_TEMP;
	const u16 *REG_CRITICAL_TEMP_TOLERANCE;

	const u16 REG_TEMP_SOURCE; / temp register sources */
	const u16 *REG_TEMP_SEL;
	const u16 *REG_WEIGHT_TEMP_SEL;
	const u16 REG_WEIGHT_TEMP[3]; / 0=base, 1=tolerance, 2=step */

	const u16 *REG_TEMP_OFFSET;

	const u16 *REG_ALARM;
	const u16 *REG_BEEP;

	const u16 *REG_TSI_TEMP;

	unsigned int (*fan_from_reg)(u16 reg, unsigned int divreg);
	unsigned int (*fan_from_reg_min)(u16 reg, unsigned int divreg);

	struct mutex update_lock;
	bool valid; /* true if following fields are valid */
	unsigned long last_updated; /* In jiffies */

	/* Register values */
	u8 bank; /* current register bank */
	u8 in_num; /* number of in inputs we have */
	u8 in[15][3]; /* [0]=in, [1]=in_max, [2]=in_min */
	unsigned int rpm[NUM_FAN];
	u16 fan_min[NUM_FAN];
	u8 fan_pulses[NUM_FAN];
	u8 fan_div[NUM_FAN];
	u8 has_pwm;
	u8 has_fan; /* some fan inputs can be disabled */
	u8 has_fan_min; /* some fans don't have min register */
	bool has_fan_div;

	u8 num_temp_alarms; /* 2, 3, or 6 */
	u8 num_temp_beeps; /* 2, 3, or 6 */
	u8 temp_fixed_num; /* 3 or 6 */
	u8 temp_type[NUM_TEMP_FIXED];
	s8 temp_offset[NUM_TEMP_FIXED];
	s16 temp[5][NUM_TEMP]; /* 0=temp, 1=temp_over, 2=temp_hyst,
	* 3=temp_crit, 4=temp_lcrit
	*/
	s16 tsi_temp[NUM_TSI_TEMP];
	u64 alarms;
	u64 beeps;

	u8 pwm_num; /* number of pwm */
	u8 pwm_mode[NUM_FAN]; /* 0->DC variable voltage,
	* 1->PWM variable duty cycle
	*/
	enum pwm_enable pwm_enable[NUM_FAN];
	/* 0->off
	* 1->manual
	* 2->thermal cruise mode (also called SmartFan I)
	* 3->fan speed cruise mode
	* 4->SmartFan III
	* 5->enhanced variable thermal cruise (SmartFan IV)
	*/
	u8 pwm[7][NUM_FAN]; /* [0]=pwm, [1]=pwm_start, [2]=pwm_floor,
	* [3]=pwm_max, [4]=pwm_step,
	* [5]=weight_duty_step, [6]=weight_duty_base
	*/

	u8 target_temp[NUM_FAN];
	u8 target_temp_mask;
	u32 target_speed[NUM_FAN];
	u32 target_speed_tolerance[NUM_FAN];
	u8 speed_tolerance_limit;

	u8 temp_tolerance[2][NUM_FAN];
	u8 tolerance_mask;

	u8 fan_time[3][NUM_FAN]; /* 0 = stop_time, 1 = step_up, 2 = step_down */

	/* Automatic fan speed control registers */
	int auto_pwm_num;
	u8 auto_pwm[NUM_FAN][7];
	u8 auto_temp[NUM_FAN][7];
	u8 pwm_temp_sel[NUM_FAN];
	u8 pwm_weight_temp_sel[NUM_FAN];
	u8 weight_temp[3][NUM_FAN]; /* 0->temp_step, 1->temp_step_tol,
	* 2->temp_base
	*/

	u8 vid;
	u8 vrm;

	bool have_vid;

	u16 have_temp;
	u16 have_temp_fixed;
	u16 have_tsi_temp;
	u16 have_in;

	/* Remember extra register values over suspend/resume */
	u8 vbat;
	u8 fandiv1;
	u8 fandiv2;
	u8 sio_reg_enable;

	struct regmap *regmap;
	bool read_only;

	/* driver-specific (platform, i2c) initialization hook and data */
	int (driver_init)(struct nct6775_data data);
	void *driver_data;
	};

	static inline int nct6775_read_value(struct nct6775_data data, u16 reg, u16 value)
	{
	unsigned int tmp;
	int ret = regmap_read(data->regmap, reg, &tmp);

	if (!ret)
	*value = tmp;
	return ret;
	}

	static inline int nct6775_write_value(struct nct6775_data *data, u16 reg, u16 value)
	{
	return regmap_write(data->regmap, reg, value);
	}

	bool nct6775_reg_is_word_sized(struct nct6775_data *data, u16 reg);
	int nct6775_probe(struct device dev, struct nct6775_data data,
	const struct regmap_config *regmapcfg);

	ssize_t nct6775_show_alarm(struct device dev, struct device_attribute attr, char *buf);
	ssize_t nct6775_show_beep(struct device dev, struct device_attribute attr, char *buf);
	ssize_t nct6775_store_beep(struct device dev, struct device_attribute attr, const char *buf,
	size_t count);

	static inline int nct6775_write_temp(struct nct6775_data *data, u16 reg, u16 value)
	{
	if (!nct6775_reg_is_word_sized(data, reg))
	value >>= 8;
	return nct6775_write_value(data, reg, value);
	}

	static inline umode_t nct6775_attr_mode(struct nct6775_data data, struct attribute attr)
	{
	return data->read_only ? (attr->mode & ~0222) : attr->mode;
	}

	static inline int
	nct6775_add_attr_group(struct nct6775_data data, const struct attribute_group group)
	{
	/* Need to leave a NULL terminator at the end of data->groups */
	if (data->num_groups == ARRAY_SIZE(data->groups) - 1)
	return -ENOBUFS;

	data->groups[data->num_groups++] = group;
	return 0;
	}

	#define NCT6775_REG_BANK 0x4E
	#define NCT6775_REG_CONFIG 0x40

	#define NCT6775_REG_FANDIV1 0x506
	#define NCT6775_REG_FANDIV2 0x507

	#define NCT6791_REG_HM_IO_SPACE_LOCK_ENABLE 0x28

	#define FAN_ALARM_BASE 16
	#define TEMP_ALARM_BASE 24
	#define INTRUSION_ALARM_BASE 30
	#define BEEP_ENABLE_BASE 15

	/*
	* Not currently used:
	* REG_MAN_ID has the value 0x5ca3 for all supported chips.
	* REG_CHIP_ID == 0x88/0xa1/0xc1 depending on chip model.
	* REG_MAN_ID is at port 0x4f
	* REG_CHIP_ID is at port 0x58
	*/

	#endif /* __HWMON_NCT6775_H__ */