ideapad-cm

#!/usr/bin/env bash

# TODO: Arguments parsing is done manually
# TODO: Script accepts extra arguments

function _print_usage() {
	echo "Usage:"
	echo -e "\t${0} enable|disable|status [acpi_call|ideapad_laptop]"
}

function _acpi_call() {
	# TODO: Make sure acpi_call module is loaded
	# TODO: Handle values different than 3 and 5
	_command="${1}"
	if [ "${_command}" == "enable" ]
	then
		sudo bash -c "echo '\_SB.PCI0.LPCB.EC0.VPC0.SBMC 3' > /proc/acpi/call"
	elif [ "${_command}" == "disable" ]
	then
		sudo bash -c "echo '\_SB.PCI0.LPCB.EC0.VPC0.SBMC 5' > /proc/acpi/call"
	elif [ "${_command}" == "status" ]
	then
		# TODO: Implement status command
		echo "status command is not currently implemented for module acpi_call."
		return 1
	else
		return 1
	fi
}

function _ideapad_laptop() {
	# TODO: Make sure ideapad_laptop module is loaded
	# TODO: Make sure VPC2004:00 exists
	_command="${1}"
	if [ "${_command}" == "enable" ]
	then
		# TODO: Don't enable conservation mode if it's already enabled
		sudo bash -c "echo 1 > /sys/bus/platform/drivers/ideapad_acpi/VPC2004:00/conservation_mode"
	elif [ "${_command}" == "disable" ]
	then
		# TODO: Don't disable conservation mode if it's already disabled
		sudo bash -c "echo 0 > /sys/bus/platform/drivers/ideapad_acpi/VPC2004:00/conservation_mode"
	elif [ "${_command}" == "status" ]
	then
		_status_value="$( cat /sys/bus/platform/drivers/ideapad_acpi/VPC2004:00/conservation_mode )"
		if [ "${_status_value}" == "1" ]
		then
			echo "Battery conservation mode is currently enabled."
		elif [ "${_status_value}" == "0" ]
		then
			echo "Battery conservation mode is currently disabled."
		else
			echo "Error reading battery conservation mode status."
		fi
	else
		return 1
	fi
}

if [ "${1}" == "enable" ]
then
	_command="enable"
elif [ "${1}" == "disable" ]
then
	_command="disable"
elif [ "${1}" == "status" ]
then
	_command="status"
else
	_print_usage
	exit 1
fi

if [ "${2}" == "acpi_call" ]
then
	_module="acpi_call"
elif [ "${2}" == "ideapad_laptop" ] ||
	[ -z "${2}" ]
then
	_module="ideapad_laptop"
else
	_print_usage
	exit 1
fi

if [ "${_module}" == "acpi_call" ]
then
	_acpi_call "${_command}"
elif [ "${_module}" == "ideapad_laptop" ]
then
	_ideapad_laptop "${_command}"
fi