src/drivers/i2c/nct7802y/chip.h

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2
   3 #ifndef DRIVERS_I2C_NCT7802Y_CHIP_H
   4 #define DRIVERS_I2C_NCT7802Y_CHIP_H
   5
   6 #include <stdint.h>
   7
   8 #define NCT7802Y_PECI_CNT       2
   9 #define NCT7802Y_FAN_CNT        3
  10 #define NCT7802Y_RTD_CNT        3
  11
  12 /* Remote temperature diode sensors mode */
  13 enum nct7802y_rtd_mode {
  14         RTD_CLOSED = 0,
  15         RTD_CURRENT_MODE,
  16         RTD_THERMISTOR_MODE,
  17         RTD_VOLTAGE_MODE,
  18 };
  19
  20 enum nct7802y_peci_mode {
  21         PECI_DISABLED = 0,
  22         PECI_DOMAIN_0,
  23         PECI_DOMAIN_1,
  24         PECI_HIGHEST,
  25 };
  26
  27 struct nct7802y_peci_config {
  28         enum nct7802y_peci_mode mode;
  29         u8 base_temp;
  30 };
  31
  32 enum nct7802y_fan_mode {
  33         FAN_IGNORE = 0,
  34         FAN_MANUAL,
  35         FAN_SMART,
  36 };
  37
  38 enum nct7802y_fan_smartmode {
  39         SMART_FAN_DUTY = 0,     /* Target values given in duty cycle %. */
  40         SMART_FAN_RPM,          /* Target values given in RPM. */
  41 };
  42
  43 enum nct7802y_fan_speed {
  44         FAN_SPEED_NORMAL = 0,   /* RPM values <= 12,750. */
  45         FAN_SPPED_HIGHSPEED,    /* RPM values <= 25,500. */
  46 };
  47
  48 enum nct7802y_fan_pecierror {
  49         PECI_ERROR_KEEP = 0,    /* Keep current value. */
  50         PECI_ERROR_VALUE,       /* Use `pecierror_minduty`. */
  51         PECI_ERROR_FULLSPEED,   /* Run PWM at 100% duty cycle. */
  52 };
  53
  54 enum nct7802y_temp_source {
  55         TEMP_SOURCE_REMOTE_1 = 0,
  56         TEMP_SOURCE_REMOTE_2,
  57         TEMP_SOURCE_REMOTE_3,
  58         TEMP_SOURCE_LOCAL,
  59         TEMP_SOURCE_PECI_0,
  60         TEMP_SOURCE_PECI_1,
  61         TEMP_SOURCE_PROGRAMMABLE_0,
  62         TEMP_SOURCE_PROGRAMMABLE_1,
  63 };
  64
  65 struct nct7802y_sensors_config {
  66         bool local_enable;
  67         enum nct7802y_rtd_mode rtd[NCT7802Y_RTD_CNT];
  68 };
  69
  70 struct nct7802y_fan_smartconfig {
  71         enum nct7802y_fan_smartmode mode;
  72         enum nct7802y_fan_speed speed;
  73         enum nct7802y_temp_source tempsrc;
  74         struct {
  75                 u8 temp;
  76                 u16 target;
  77         } table[4];
  78         u8 critical_temp;
  79 };
  80
  81 struct nct7802y_fan_config {
  82         enum nct7802y_fan_mode mode;
  83         union {
  84                 u8 duty_cycle;
  85                 struct nct7802y_fan_smartconfig smart;
  86         };
  87 };
  88
  89 /* Implements only those parts currently used by coreboot mainboards. */
  90 struct drivers_i2c_nct7802y_config {
  91         struct nct7802y_peci_config peci[NCT7802Y_PECI_CNT];
  92         struct nct7802y_fan_config fan[NCT7802Y_FAN_CNT];
  93         struct nct7802y_sensors_config sensors;
  94         enum nct7802y_fan_pecierror on_pecierror;
  95         u8 pecierror_minduty;
  96 };
  97
  98 #endif /* DRIVERS_I2C_NCT7802Y_CHIP_H */