51 lines
1.2 KiB
Bash
51 lines
1.2 KiB
Bash
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#!/bin/bash
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vid=04d8
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pid=00dd
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#check to see if sysfs is mounted
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sysfs_path=`awk '/^sysfs/{ print $2 }' < /proc/mounts`
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curr_path=`pwd`
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#if variable is empty, we should exit. No SYSFS found
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if [[ -z $sysfs_path ]]; then
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echo "No sysfs in this system! Exiting..."
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exit 1
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fi
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function load_drivers
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{
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modprobe i2c-dev
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if [[ $? -ne 0 ]]; then
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echo "Cannot load the \"i2c-dev\" driver! Exiting..."
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exit 1
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fi
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modprobe i2c-mcp2221
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if [[ $? -ne 0 ]]; then
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echo "Cannot load the \"i2c-mcp2221\" driver! Exiting..."
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exit 1
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fi
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echo "I2C related drivers are loaded"
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}
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usb_device_path=${sysfs_path}/bus/usb/devices
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cd $usb_device_path
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for usbdev in *; do
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idvendor=${usb_device_path}/${usbdev}/idVendor
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idproduct=${usb_device_path}/${usbdev}/idProduct
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usb_driver=${usb_device_path}/${usbdev}/${usbdev}:1.2/driver
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if [[ -f $idvendor ]]; then
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dev_vid=`grep -i $vid < $idvendor`
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dev_pid=`grep -i $pid < $idproduct`
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if [[ -n $dev_vid ]] && [[ -n $dev_pid ]]; then
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echo "I found the requested VID/PID: $dev_vid, $dev_pid"
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load_drivers
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echo -n "${usbdev}:1.2" > ${usb_driver}/unbind
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echo -n "${usbdev}:1.2" > ${sysfs_path}/bus/usb/drivers/i2c-mcp2221/bind
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fi
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fi
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done
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