Your Name
68 lines
1.6 KiB
Bash
68 lines
1.6 KiB
Bash
#!/bin/bash
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# Purpose:
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# The purpose of the script is to change the CB/CL ratio setting of the hotswap controller from 1.9x to 3.9x
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I2C_BUS=11
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CHIP_ADDR=0x15
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GPIO_ID=91 #Revision ID
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GPIO_BasePath=/sys/class/gpio
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function set_hotswap_reg()
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{
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#set reg "0xd9" bit 3 to 1
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i2cset -f -y $I2C_BUS $CHIP_ADDR 0xd9 0x08
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}
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function get_hotswap_value()
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{
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#get the value of reg "0xd9", return value should be "0x08"
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i2cget -f -y $I2C_BUS $CHIP_ADDR 0xd9
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}
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function export_gpio()
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{
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if [ -d "$GPIO_BasePath/gpio$GPIO_ID" ]; then
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echo "gpio$GPIO_ID folder exist, skip export."
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else
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echo "Export gpio$GPIO_ID..."
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echo $GPIO_ID > $GPIO_BasePath/export
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fi
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}
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function get_gpio_value()
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{
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cat $GPIO_BasePath/gpio$GPIO_ID/value
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}
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function setting_hotswap()
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{
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echo "setting hotswap controller..."
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set_hotswap_reg
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for i in {0..3};
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do
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if [ "$i" == "3" ];then
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echo "change hotswap controller setting failed after retry 3 times."
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else
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hotswap_value=$(get_hotswap_value)
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echo "get hotswap controller return value : $hotswap_value"
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if [ "$hotswap_value" == "0x08" ];then
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echo "change hotswap controller setting success."
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break;
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else
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echo "hotswap controller setting failed, retry $i times..."
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fi
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fi
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done
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}
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export_gpio
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gpio_value=$(get_gpio_value)
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if [ "$gpio_value" == "1" ];then
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echo "gpio$GPIO_ID value is: $gpio_value, setting hotswap."
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setting_hotswap
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else
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echo "gpio$GPIO_ID value is: $gpio_value, no need to set hotswap."
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fi
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