fan_init.c

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/* SPDX-License-Identifier: GPL-2.0-only */
 
#include <bootstate.h>
#include <superio/fintek/common/fan_control.h>
#include <amdblocks/lpc.h>
#include <device/pci_ops.h>
#include <soc/pci_devs.h>
 
#define CPU_FAN         1
#define SYSTEM_FAN      2
 
/* Boundaries in celsius, sections in percent */
static u8 cpu_boudaries[FINTEK_BOUNDARIES_SIZE] = {
        80,
        65,
        50,
        35
};
 
static u8 system_boudaries[FINTEK_BOUNDARIES_SIZE] = {
        70,
        55,
        40,
        25
};
 
static u8 cpu_section[FINTEK_SECTIONS_SIZE] = {
        100,
        85,
        70,
        55,
        40
};
 
static u8 system_section[FINTEK_SECTIONS_SIZE] = {
        100,
        85,
        70,
        55,
        40
};
 
struct fintek_fan cpu_fan = {
        CPU_FAN,
        IGNORE_SENSOR,
        TEMP_SENSOR_DEFAULT,
        FAN_TEMP_TSI,
        FAN_TYPE_PWM_PUSH_PULL,
        FAN_MODE_DEFAULT,
        FAN_PWM_FREQ_23500,
        FAN_UP_RATE_10HZ,
        FAN_DOWN_RATE_10HZ,
        FAN_FOLLOW_INTERPOLATION,
        cpu_boudaries,
        cpu_section
};
 
struct fintek_fan system_fan = {
        SYSTEM_FAN,
        EXTERNAL_SENSOR2,
        TEMP_SENSOR_BJT,
        FAN_TEMP_EXTERNAL_2,
        FAN_TYPE_DAC_POWER,
        FAN_MODE_DEFAULT,
        FAN_PWM_FREQ_23500,
        FAN_UP_RATE_10HZ,
        FAN_DOWN_RATE_10HZ,
        FAN_FOLLOW_INTERPOLATION,
        system_boudaries,
        system_section
};
 
static void init_fan_control(void *unused)
{
        u32 temp;
        /* Open a LPC IO access to 0x0220-0x0227 */
        temp = pci_read_config32(SOC_LPC_DEV, LPC_IO_PORT_DECODE_ENABLE);
        temp |= DECODE_ENABLE_SERIAL_PORT2;
        pci_write_config32(SOC_LPC_DEV, LPC_IO_PORT_DECODE_ENABLE, temp);
 
        set_fan(&cpu_fan);
        set_fan(&system_fan);
}
 
BOOT_STATE_INIT_ENTRY(BS_POST_DEVICE, BS_ON_ENTRY, init_fan_control, NULL);