chip.h

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/* SPDX-License-Identifier: GPL-2.0-only */
 
#ifndef DRIVERS_I2C_NCT7802Y_CHIP_H
#define DRIVERS_I2C_NCT7802Y_CHIP_H
 
#include <stdint.h>
 
#define NCT7802Y_PECI_CNT       2
#define NCT7802Y_FAN_CNT        3
#define NCT7802Y_RTD_CNT        3
 
/* Remote temperature diode sensors mode */
enum nct7802y_rtd_mode {
        RTD_CLOSED = 0,
        RTD_CURRENT_MODE,
        RTD_THERMISTOR_MODE,
        RTD_VOLTAGE_MODE,
};
 
enum nct7802y_peci_mode {
        PECI_DISABLED = 0,
        PECI_DOMAIN_0,
        PECI_DOMAIN_1,
        PECI_HIGHEST,
};
 
struct nct7802y_peci_config {
        enum nct7802y_peci_mode mode;
        u8 base_temp;
};
 
enum nct7802y_fan_mode {
        FAN_IGNORE = 0,
        FAN_MANUAL,
        FAN_SMART,
};
 
enum nct7802y_fan_smartmode {
        SMART_FAN_DUTY = 0,     /* Target values given in duty cycle %. */
        SMART_FAN_RPM,          /* Target values given in RPM. */
};
 
enum nct7802y_fan_speed {
        FAN_SPEED_NORMAL = 0,   /* RPM values <= 12,750. */
        FAN_SPPED_HIGHSPEED,    /* RPM values <= 25,500. */
};
 
enum nct7802y_fan_pecierror {
        PECI_ERROR_KEEP = 0,    /* Keep current value. */
        PECI_ERROR_VALUE,       /* Use `pecierror_minduty`. */
        PECI_ERROR_FULLSPEED,   /* Run PWM at 100% duty cycle. */
};
 
enum nct7802y_temp_source {
        TEMP_SOURCE_REMOTE_1 = 0,
        TEMP_SOURCE_REMOTE_2,
        TEMP_SOURCE_REMOTE_3,
        TEMP_SOURCE_LOCAL,
        TEMP_SOURCE_PECI_0,
        TEMP_SOURCE_PECI_1,
        TEMP_SOURCE_PROGRAMMABLE_0,
        TEMP_SOURCE_PROGRAMMABLE_1,
};
 
struct nct7802y_sensors_config {
        bool local_enable;
        enum nct7802y_rtd_mode rtd[NCT7802Y_RTD_CNT];
};
 
struct nct7802y_fan_smartconfig {
        enum nct7802y_fan_smartmode mode;
        enum nct7802y_fan_speed speed;
        enum nct7802y_temp_source tempsrc;
        struct {
                u8 temp;
                u16 target;
        } table[4];
        u8 critical_temp;
};
 
struct nct7802y_fan_config {
        enum nct7802y_fan_mode mode;
        union {
                u8 duty_cycle;
                struct nct7802y_fan_smartconfig smart;
        };
};
 
/* Implements only those parts currently used by coreboot mainboards. */
struct drivers_i2c_nct7802y_config {
        struct nct7802y_peci_config peci[NCT7802Y_PECI_CNT];
        struct nct7802y_fan_config fan[NCT7802Y_FAN_CNT];
        struct nct7802y_sensors_config sensors;
        enum nct7802y_fan_pecierror on_pecierror;
        u8 pecierror_minduty;
};
 
#endif /* DRIVERS_I2C_NCT7802Y_CHIP_H */