/* 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, nct6799 };
enum pwm_enable { off, manual, thermal_cruise, speed_cruise, sf3, sf4 };
#define NUM_TEMP 12 /* 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
#define NUM_IN 18
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[NUM_IN][3]; /* [0]=in, [1]=in_max, [2]=in_min */
const u16 *scale_in; /* internal scaling factors */
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;
u32 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);
}
struct nct6775_data *nct6775_update_device(struct device *dev);
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
/*
* ALARM_BITS and BEEP_BITS store bit-index for the mask of the registers
* loaded into data->alarm and data->beep.
*
* Every input register (IN/TEMP/FAN) must have a corresponding
* ALARM/BEEP bit at the same index BITS[BASE + index]
* Set value to -1 to disable the visibility of that '*_alarm' attribute and
* to pad the bits until the next BASE
*
* Beep has an additional GLOBAL_BEEP_ENABLE bit
*/
#define VIN_ALARM_BASE 0
#define FAN_ALARM_BASE 24
#define TEMP_ALARM_BASE 36
#define INTRUSION_ALARM_BASE 48
#define BEEP_ENABLE_BASE 50
#define NUM_ALARM_BITS (INTRUSION_ALARM_BASE + 4)
#define NUM_BEEP_BITS (BEEP_ENABLE_BASE + 1)
/*
* 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__ */
Codebase Browser
linux