# Copyright 1999-2006 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Header: $

inherit eutils linux-info

DESCRIPTION="Kernel-space driver for Alcatel SpeedTouch USB modems"
HOMEPAGE="http://www.speedtouch.com/"
SRC_URI="http://www.speedtouch.com/download/drivers/USB/SpeedTouch330_firmware_${PV//./}.zip"

# Taken from http://www.speedtouch.com/driver_upgrade_lx_${PV}.htm
LICENSE="SpeedTouch-USB-Firmware"

SLOT="0"
KEYWORDS="~x86"
IUSE=""

# udev replaces hotplug, as mentioned at 
# http://www.linux-usb.org/SpeedTouch/firmware/firmware.html

# hotplug only needs to be *installed*, to create /etc/hotplug/usb/ - it does
# not need to be running.

RDEPEND="net-dialup/ppp
	sys-apps/module-init-tools
	>=sys-apps/baselayout-1.12.0_pre13-r1
	>=sys-apps/hotplug-20040923-r1
	>=sys-fs/udev-068-r1
	!net-dialup/speedtouch"
DEPEND="${RDEPEND}
	app-arch/unzip
	sys-apps/grep
	sys-apps/coreutils"

S=${WORKDIR}

pkg_setup() {
	linux-info_pkg_setup

	CONFIG_CHECK="!STANDALONE FW_LOADER NET PACKET ATM NETDEVICES \
		PPP PPPOATM USB USB_DEVICEFS USB_ATM USB_SPEEDTOUCH"
	check_extra_config
	echo

	[[ -e /etc/hotplug/usb.usermap ]] && egrep -q " 0x06[bB]9 +0x4061 " /etc/hotplug/usb.usermap && \
		ewarn "Please remove the SpeedTouch line from /etc/hotplug/usb.usermap"

	# Check kernel version
	if kernel_is lt 2 6 10 ; then
		eerror "The kernel-space driver exists only in kernels >= 2.6.10."
		eerror "Please emerge net-dialup/speedtouch instead or upgrade the kernel."
		die "Unsupported kernel version"
	fi

	# Check ppp
	if ! built_with_use net-dialup/ppp atm ; then
		eerror "net-dialup/ppp should be built with PPP over ATM support enabled."
		eerror "Run the following command and try again:"
		eerror "  euse -E atm && emerge net-dialup/ppp"
		die "PPP not configured"
	fi
}

src_install() {
	local FILE_VER="${PV#*.}"
	FILE_VER="${PV%%.*}.${FILE_VER//./}"  # {major_ver}.{minor_digits}

	# Extract the "stage 1" portion of the firmware
	dd if=KQD6_${FILE_VER} of=speedtch-1.bin.2 \
		ibs=1 obs=991 count=991 skip=36 &> /dev/null \
		|| die "Extraction of stage 1 firmware (step 1) failed"

	dd if=ZZZL_${FILE_VER} of=speedtch-1.bin.4 \
		ibs=1 obs=935 count=935 skip=32 &> /dev/null \
		|| die "Extraction of stage 1 firmware (step 2) failed"

	# Extract the "stage 2" portion of the firmware
	dd if=KQD6_${FILE_VER} of=speedtch-2.bin.2 \
		ibs=1 obs=762650 count=762650 skip=1027 &> /dev/null \
		|| die "Extraction of stage 2 firmware (step 1) failed"

	dd if=ZZZL_${FILE_VER} of=speedtch-2.bin.4 \
		ibs=1 obs=775545 count=775545 skip=967 &> /dev/null \
		|| die "Extraction of stage 2 firmware (step 2) failed"

	# Copy to the firmware directory
	insinto /lib/firmware
	insopts -m 600
	doins speedtch-{1,2}.bin.{2,4} || die "doins firmware failed"

	# Symlinks for other revisions of the modem
	cd ${D}/lib/firmware
	for n in 1 2 ; do
		for rev in 0 1 ; do
			ln -sfn speedtch-${n}.bin.2 speedtch-${n}.bin.${rev}
		done
		# Seems like a reasonable guess, for revision 3
		ln -sfn speedtch-${stub}${n}.bin.4 speedtch-${n}.bin.3
	done

	insinto /etc/hotplug/usb
	insopts -m 644
	doins ${FILESDIR}/speedtch.usermap || die "doins usermap failed"

	# The documentation is necessary to complete the setup
	dodoc ${FILESDIR}/README || die "dodoc failed"
}

pkg_postinst() {
	ewarn "To complete the installation, you must read the documentation in"
	ewarn "${ROOT}usr/share/doc/${PF}"
}