| /* SPDX-License-Identifier: GPL-2.0-only */ |
| /* This file is part of the coreboot project. */ |
| |
| #ifndef DRIVERS_I2C_LM96000_CHIP_H |
| #define DRIVERS_I2C_LM96000_CHIP_H |
| |
| #include <stdint.h> |
| |
| #define LM96000_VIN_CNT 5 |
| #define LM96000_TEMP_IN_CNT 3 |
| #define LM96000_FAN_IN_CNT 4 |
| #define LM96000_PWM_CTL_CNT 3 |
| #define LM96000_TEMP_ZONE_CNT 3 |
| |
| enum lm96000_vin { |
| LM96000_2_5V = 0, |
| LM96000_VCCP = 1, |
| LM96000_3_3V = 2, |
| LM96000_5V = 3, |
| LM96000_12V = 4, |
| }; |
| |
| enum lm96000_fan_mode { |
| /* Bit 7 merely signifies that the mode is set, so we |
| can map the lower bits directly to register values. */ |
| LM96000_FAN_IGNORE = 0x00, |
| LM96000_FAN_ZONE_1_AUTO = 0x80, |
| LM96000_FAN_ZONE_2_AUTO = 0x81, |
| LM96000_FAN_ZONE_3_AUTO = 0x82, |
| LM96000_FAN_ALWAYS_FULL = 0x83, |
| LM96000_FAN_DISABLED = 0x84, |
| LM96000_FAN_HOTTEST_23 = 0x85, |
| LM96000_FAN_HOTTEST_123 = 0x86, |
| LM96000_FAN_MANUAL = 0x87, |
| }; |
| |
| enum lm96000_pwm_freq { |
| LM96000_PWM_10HZ = 0, |
| LM96000_PWM_15HZ = 1, |
| LM96000_PWM_23HZ = 2, |
| LM96000_PWM_30HZ = 3, |
| LM96000_PWM_38HZ = 4, |
| LM96000_PWM_47HZ = 5, |
| LM96000_PWM_61HZ = 6, |
| LM96000_PWM_94HZ = 7, |
| LM96000_PWM_22_5KHZ = 8, |
| LM96000_PWM_24_0KHZ = 9, |
| LM96000_PWM_25_7KHZ = 10, |
| LM96000_PWM_27_7KHZ = 12, |
| LM96000_PWM_30_0KHZ = 14, |
| }; |
| |
| enum lm96000_tach_mode { |
| /* 0 will be used for kHz frequencies */ |
| LM96000_TACH_MODE_1 = 1, /* use if TACHx isn't used with PWMx */ |
| LM96000_TACH_MODE_2 = 2, /* use either 2 or 3 if TACHx matches PWMx */ |
| LM96000_TACH_MODE_3 = 3, |
| }; |
| |
| enum lm96000_spinup_time { |
| LM96000_SPINUP_0MS = 0, |
| LM96000_SPINUP_100MS = 1, |
| LM96000_SPINUP_250MS = 2, |
| LM96000_SPINUP_400MS = 3, |
| LM96000_SPINUP_700MS = 4, |
| LM96000_SPINUP_1000MS = 5, |
| LM96000_SPINUP_2000MS = 6, |
| LM96000_SPINUP_4000MS = 7, |
| }; |
| |
| struct lm96000_fan_config { |
| enum lm96000_fan_mode mode; |
| int invert; /* invert PWM signal */ |
| enum lm96000_spinup_time spinup; |
| enum lm96000_pwm_freq freq; |
| enum lm96000_tach_mode tach; |
| union { |
| u8 duty_cycle; /* duty cycle in manual mode */ |
| u8 min_duty; /* minimum duty cycle */ |
| }; |
| }; |
| |
| struct lm96000_temp_zone { |
| u8 low_temp; /* temperature for min. duty cycle (in °C) */ |
| u8 target_temp; /* temperature for 100% duty cycle (in °C) */ |
| u8 panic_temp; /* temperature for 100% duty cycle on all fans */ |
| |
| /* This is tied to the zone in the implementation I tested |
| with. (Datasheet clearly states the opposite, that this |
| is tied to each PWM output so YMMV.) */ |
| enum { |
| /* turn fan off below `low_temp - hysteresis` */ |
| LM96000_LOW_TEMP_OFF = 0, |
| /* keep PWM at mininum duty cycle */ |
| LM96000_LOW_TEMP_MIN = 1, |
| } min_off; |
| u8 hysteresis; |
| }; |
| |
| /* Implements only those parts currently used by coreboot mainboards. */ |
| struct drivers_i2c_lm96000_config { |
| struct { |
| u16 low; /* in mV */ |
| u16 high; |
| } vin[LM96000_VIN_CNT]; |
| |
| struct { |
| signed char low; /* in °C */ |
| signed char high; |
| } temp_in[LM96000_TEMP_IN_CNT]; |
| |
| struct { |
| u16 low; /* in RPM */ |
| } fan_in[LM96000_FAN_IN_CNT]; |
| |
| struct lm96000_fan_config fan[LM96000_PWM_CTL_CNT]; |
| struct lm96000_temp_zone zone[LM96000_TEMP_ZONE_CNT]; |
| }; |
| |
| #endif /* DRIVERS_I2C_LM96000_CHIP_H */ |