device-purism-librem5: add smartcard reader support (MR 1993)

This adds a new subpackage that installs dependencies and configures the
smartcard reader on the librem 5. Some setup is required before this
will work (e.g. upgrading reader firmware), the L5 wiki page will have
this information.

The pcsc init script was forked into this package to allow for powering
on the reader *before* the service started. Doing this in a separate
init script would have caused the reader to power on regardless of
whether the pcsc service was set to start, which is not desirable since
it should *only* be powered on when pcsc is starting

device/community/device-purism-librem5/APKBUILD

@@ -2,7 +2,7 @@
 # Maintainer:  Clayton Craft <clayton@craftyguy.net>
 pkgname=device-purism-librem5
 pkgdesc="Purism Librem 5 Phone"
-pkgver=1.13
+pkgver=1.14
 pkgrel=0
 _confver=35
 url="https://postmarketos.org"
@@ -32,12 +32,15 @@ source="
 	librem5-shipmode.initd
 	modprobe.d_rsi.conf
 	modules-load.d_librem5.conf
+	pcscd-librem5-reader.conf
+	pcscd-librem5.initd
 	uboot-script.cmd
 	xorg.conf
 "
 subpackages="
 	$pkgname-phosh
 	$pkgname-pulseaudio
+	$pkgname-smartcard
 "
 install="$pkgname.post-install"
 
@@ -67,6 +70,19 @@ pulseaudio() {
 	cp -r "$builddir"/default/audio/profile-sets "$subpkgdir"/usr/share/pulseaudio/alsa-mixer/
 }
 
+smartcard() {
+	pkgdesc="OpenPGP SmartCard support for the Librem 5"
+	depends="$pkgname ccid gnupg-scdaemon pcsc-lite pcsc-tools"
+	install_if="$pkgname pcsc-tools"
+	install="$install $subpkgname.post-install"
+
+	install -D -m644 "$srcdir"/pcscd-librem5-reader.conf \
+		"$subpkgdir"/etc/reader.conf.d/librem5-ttxs-reader
+
+	install -D -m755 "$srcdir"/pcscd-librem5.initd \
+		"$subpkgdir"/etc/init.d/pcscd-librem5
+}
+
 package() {
 	install -D -m644 "$srcdir"/boot.scr \
 		"$pkgdir"/boot/boot.scr
@@ -108,5 +124,7 @@ d033df2b9125622c946af67dad83070473c86937b5825f57ad272c9145b594071dd6913949127803
 76b06cc1ac82c3fc0e298c9d7d5c9139624b1269bf846fe3bc07b9af877d882362b60ba90028ad3182cb1d6426aacdb560fe060b026778a56e7f038d495eadd4  librem5-shipmode.initd
 9dc018f0de523cbfe5a49cbe831aa30e975a8dd34635197bb52582f072ac356ef2c02223fc794d970380091a69a83a74c3fbe34520190c8536e77f9ea98c7659  modprobe.d_rsi.conf
 a0740e405781ec6ef765fdc9f5700c95adbb241c45c97b9384ba68cdece662cb216ca5918640042f6e65a5d1b1a9099936382c99b49a44303f7b6d77a075a471  modules-load.d_librem5.conf
+8ef4ec7a9e9a4fb801d207e7d94b627aacc9243a93b0ec28e0823a6f44b8102416c040e4ddf499f87bb9dfa960cf6f627b008b79f197f6814b3fd881e18ae8ef  pcscd-librem5-reader.conf
+2618b40eebd3602066ee75ab85cbdbb4cfee498def9879c95a304f05a6eeedf1ab28c5dd9fa5efc8f88c790f49c96458c61d5dfe8a3ca0f96bcc0e244313ab01  pcscd-librem5.initd
 aa06920d47ca3781d76473a8a4efebd243ebb1c1d81e1714ef5ade3fed91e0a7a7113e5fa00c7c77163556745962e57102469517f9ea3ad868bc4033387bf428  uboot-script.cmd
 1cbc65cf2cb8fad4b0332d012a0256a266205b9b64371f5c0dae09dbb7f1e45b254e8c43993b896097e9d7035a72d547d9bce1ab2133addc56a5abdb80b44616  xorg.conf"

device/community/device-purism-librem5/device-purism-librem5-smartcard.post-install

@@ -0,0 +1,11 @@
+#!/bin/sh
+
+# smartcard reader service
+rc-update add pcscd-librem5
+
+cat 1>&2 <<EOF
+*
+* If the smartcard firmware hasn't been upgraded, an upgrade might be necessary!
+* For more info: https://wiki.postmarketos.org/wiki/Purism_Librem5_(purism-librem5)#OpenPGP_Smartcard
+*
+EOF

device/community/device-purism-librem5/pcscd-librem5-reader.conf

@@ -0,0 +1,3 @@
+DEVICENAME        /dev/ttymxc2:SEC1210
+FRIENDLYNAME      "TTXS serial"
+LIBPATH           /usr/lib/pcsc/drivers/serial/libccidtwin.so

device/community/device-purism-librem5/pcscd-librem5.initd

@@ -0,0 +1,37 @@
+#!/sbin/openrc-run
+# Copyright 1999-2014 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+# $Header: /var/cvsroot/gentoo-x86/sys-apps/pcsc-lite/files/pcscd-init.7,v 1.1 2014/02/14 23:11:54 flameeyes Exp $
+#
+# Forked from Alpine's pcsc-lite package to start the cardreader hardware on
+# the librem 5
+
+name="PC/SC Daemon for the Librem 5"
+
+pidfile=/run/pcscd/pcscd.pid
+
+command=/usr/sbin/pcscd
+command_args="${EXTRA_OPTS}"
+
+start_stop_daemon_args="--user pcscd:pcscd"
+
+depend() {
+	need localmount
+	after udev openct dbus
+	use logger
+}
+
+start_pre() {
+	checkpath -d -m 0755 -o pcscd:pcscd /run/pcscd
+
+	# power on smartcard reader
+	echo 1 > /sys/class/leds/smc_en/brightness
+
+	# delay to give card reader time to start up
+	sleep 2
+}
+
+stop_post() {
+	# power off smartcard reader
+	echo 0 > /sys/class/leds/smc_en/brightness
+}