meta-facebook/meta-bletchley/recipes-bletchley/plat-svc/files/bletchley-early-sys-init

#!/bin/bash -e

set_gpio()
{
    NET_NAME=$1
    OUT_VAL=$2
    mapfile -t -d " " GPIO_INFO < <(gpiofind "$NET_NAME")
    if [ "${#GPIO_INFO[@]}" -ne 2 ]; then
        echo "set_gpio: can not find gpio, $NET_NAME"
        return 1
    fi

    echo -n "set_gpio: set $NET_NAME = $OUT_VAL"
    if ! gpioset "${GPIO_INFO[0]}" "${GPIO_INFO[1]%$'\n'}"="$OUT_VAL"; then
        echo " failed"
        return 1
    fi

    echo " success"
    return 0
}

set_fan()
{
    FAN_ID=$1
    FAN_DUTY=$2
    SYSFA_PWM_PATH=""

    for file in /sys/devices/platform/pwm-fan"$FAN_ID"/hwmon/hwmon*/pwm1
    do
        if [ -e "$file" ]; then
            SYSFA_PWM_PATH="$file"
            break
        fi
    done

    if [ -z "$SYSFA_PWM_PATH" ]; then
        echo "set_fan: pwm file not found, chekc fan id ($FAN_ID)"
        return 1
    fi

    if [ "$FAN_DUTY" -lt 0 ] || [ "$FAN_DUTY" -gt 100 ]; then
        echo "set_fan: incorrect fan duty, $FAN_DUTY"
        return 1
    fi

    # convert duty (0-100) to pwm value (0-255)
    PWM_VAL=$(printf "%.0f" $((FAN_DUTY*255/100)))

    echo -n "set_fan: set fan$FAN_ID = $FAN_DUTY"
    if ! echo "$PWM_VAL" > "$SYSFA_PWM_PATH"; then
        echo " failed"
        return 1
    fi

    echo " success"
    return 0
}

# set initial value for GPIO output pins
set_gpio SEL_SPI2_MUX       1
set_gpio SPI2_MUX1          1
set_gpio SPI2_MUX2          1
set_gpio SPI2_MUX3          1
set_gpio SWITCH_FRU_MUX     1
set_gpio BAT_DETECT         1
set_gpio BMC_BT_WP0_N       1
set_gpio BMC_BT_WP1_N       1
set_gpio USB2_SEL0_A        1
set_gpio USB2_SEL1_A        1
set_gpio USB2_SEL0_B        1
set_gpio USB2_SEL1_B        1
set_gpio RST_FRONT_IOEXP_N  1
set_gpio BSM_FLASH_LATCH_N  1

# set initial duty value for each fan
set_fan 0   70
set_fan 1   70
set_fan 2   70
set_fan 3   70

exit 0;