greybus: lsgb: add lsgb shell script

#!/bin/sh

#

# 'ls greybus'

#

# Copyright 2016 Google Inc.

# All rights reserved.

#

###############################################################################

# Redistribution and use in source and binary forms, with or without

# modification, are permitted provided that the following conditions are met:

# 1. Redistributions of source code must retain the above copyright notice,

# this list of conditions and the following disclaimer.

# 2. Redistributions in binary form must reproduce the above copyright notice,

# this list of conditions and the following disclaimer in the documentation

# and/or other materials provided with the distribution.

# 3. Neither the name of the copyright holder nor the names of its

# contributors may be used to endorse or promote products derived from this

# software without specific prior written permission.

#

# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"

# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,

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# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,

# EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,

# PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;

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###############################################################################

# Horrid hack to just make it easier than poking around directly in sysfs

# Don't rely on any of these fields to be stable, the layout is going to

# change a lot over time.

#

print_interface() {

	local devname=$1

	local iid=`cat interface_id`

	local vid=`cat vendor_id`

	local pid=`cat product_id`

	local version=`cat version`

	local serial=`cat serial_number`

	local vs=`cat vendor_string`

	local ps=`cat product_string`

	printf "Interface: %s %s:%s ver:%s \"%s\" \"%s\"\n"\

		${iid} ${vid} ${pid} ${version} "${vs}" "${ps}"

}

print_bundle() {

	local devname=$1

	local id=`cat bundle_id`

	local class=`cat bundle_class`

	local class_type="unknown"

	case ${class} in

		"0x01" )	class_type="SVC"

				;;

		"0x02" )	class_type="GPIO"

				;;

		"0x03" )	class_type="I2C"

				;;

		"0x04" )	class_type="UART"

				;;

		"0x05" )	class_type="HID"

				;;

		"0x06" )	class_type="USB"

				;;

		"0x07" )	class_type="SDIO"

				;;

		"0x08" )	class_type="Power Supply"

				;;

		"0x09" )	class_type="PWM"

				;;

		"0x0a" )	class_type="unknown"

				;;

		"0x0b" )	class_type="SPI"

				;;

		"0x0c" )	class_type="Display"

				;;

		"0x0d" )	class_type="Camera"

				;;

		"0x0e" )	class_type="Sensoe"

				;;

		"0x0f" )	class_type="Lights"

				;;

		"0x10" )	class_type="Vibrator"

				;;

		"0x11" )	class_type="Loopback"

				;;

		"0x12" )	class_type="Audio Management"

				;;

		"0x13" )	class_type="Audio Data"

				;;

		"0x14" )	class_type="SVC"

				;;

		"0x15" )	class_type="Firmware"

				;;

		"0xfe" )	class_type="Raw"

				;;

		"0xff" )	class_type="Vendor"

				;;

	esac

	printf "   Bundle: %s %s (%s)\n" ${id} ${class_type} ${class}

}

print_svc() {

	local devname=$1

	printf "      SVC: ${devname}\n"

}

print_host_device() {

	local devname=$1

	printf "     Host: ${devname}\n"

}

print_unknown() {

	local devname=$1

	printf "Unknown device type: ${devname}\n"

}

print_device() {

	local dev=$1

	[ -d $dev ] || return

	cd $dev

	local devname=`basename ${dev}`

	local devtype=`cat uevent | grep DEVTYPE | cut -f 2 -d '='`

	case ${devtype} in

		greybus_interface )	print_interface ${devname}

					;;

		greybus_bundle )	print_bundle ${devname}

					;;

		greybus_svc )		print_svc ${devname}

					;;

		greybus_host_device )	print_host_device ${devname}

					;;

		* )			print_unknown ${devname}

					;;

	esac

}

for device in /sys/bus/greybus/devices/*

do

	print_device $device

done