Finalize and automate sllin setup for LIN on demo unit

Provide the systemd unit, the init script, the module options and the autoload command.

Change-Id: I8dfe59338f377ca8ac1b94fe568dff9e2b36bf97
Signed-off-by: Jan-Simon Möller <jsmoeller@linuxfoundation.org>

4 files changed, 83 insertions, 2 deletions

diff --git a/recipes-kernel/sllin/files/sllin-demo.service b/recipes-kernel/sllin/files/sllin-demo.service
new file mode 100644
index 00000000..c1bc9498
--- /dev/null
+++ b/recipes-kernel/sllin/files/sllin-demo.service
@@ -0,0 +1,13 @@
+[Unit]
+Description = LIN DEMO startup
+After=afm-system-daemon.service
+ 
+[Service]
+Type=forking
+PIDFile=/var/run/lin_ldattach
+ExecStart=/usr/bin/start_lin_demo.sh
+RemainAfterExit=yes
+
+ 
+[Install]
+WantedBy=default.target
diff --git a/recipes-kernel/sllin/files/start_lin_demo.sh b/recipes-kernel/sllin/files/start_lin_demo.sh
new file mode 100755
index 00000000..741189fb
--- /dev/null
+++ b/recipes-kernel/sllin/files/start_lin_demo.sh
@@ -0,0 +1,51 @@
+#!/bin/sh
+
+sleep 1
+ldattach 25 /dev/ttySC3
+pidof ldattach > /var/run/lin_ldattach
+sleep 1
+ip link set sllin0 up
+usleep 100000
+cansend sllin0 030#
+usleep 100000
+cansend sllin0 030#
+usleep 100000
+cansend sllin0 02A#
+usleep 100000
+cansend sllin0 02B#
+usleep 100000
+cansend sllin0 032#F0F8FFFFFFFFFFFF
+usleep 100000
+cansend sllin0 032#F0F8FFFFFFFFFFFF
+usleep 100000
+cansend sllin0 030#
+usleep 100000
+cansend sllin0 030#
+usleep 100000
+cansend sllin0 030#
+usleep 100000
+cansend sllin0 030#
+usleep 100000
+cansend sllin0 030#
+usleep 100000
+cansend sllin0 030#
+usleep 100000
+cansend sllin0 030#
+usleep 100000
+cansend sllin0 030#
+usleep 100000
+cansend sllin0 030#
+usleep 100000
+cansend sllin0 030#
+usleep 100000
+cansend sllin0 030#
+usleep 100000
+cansend sllin0 02D#
+usleep 100000
+cansend sllin0 02C#
+usleep 100000
+cansend sllin0 02D#
+usleep 100000
+cansend sllin0 02C#
+usleep 100000
+
diff --git a/recipes-kernel/sllin/sllin.bb b/recipes-kernel/sllin/sllin.bb
index eecd4394..f7ffea96 100644
--- a/recipes-kernel/sllin/sllin.bb
+++ b/recipes-kernel/sllin/sllin.bb
@@ -2,7 +2,7 @@ DESCRIPTION = "slLIN driver module"
 LICENSE = "GPLv2"
 LIC_FILES_CHKSUM = "file://${COMMON_LICENSE_DIR}/GPL-2.0;md5=801f80980d171dd6425610833a22dbe6"
 
-inherit module
+inherit module systemd
 
 DEPENDS = "virtual/kernel"
 
@@ -16,6 +16,23 @@ SRC_URI_append = " \
 	file://0001_update_makefile.patch;pnum=2 \
 	file://0002_fix_null_operation_check.patch;pnum=2 \
 	file://0003-Allow-recent-kernels-newer-4.11.x-to-build.patch;pnum=2 \
+	file://sllin-demo.service \
+	file://start_lin_demo.sh \
 "
 
+KERNEL_MODULE_AUTOLOAD_append = " sllin"
+KERNEL_MODULE_PROBECONF_append = " sllin"
 
+SLLINBAUDRATE ??= "9600"
+module_conf_sllin = "options sllin baudrate=${SLLINBAUDRATE}"
+
+SYSTEMD_SERVICE_${PN} = "sllin-demo.service"
+
+do_install_append () {
+	install -d 644 ${D}/${bindir}
+	install -m 755 ${WORKDIR}/start_lin_demo.sh ${D}/${bindir}/start_lin_demo.sh
+	install -d ${D}${systemd_system_unitdir}
+	install -m 0644 ${WORKDIR}/sllin-demo.service ${D}${systemd_system_unitdir}/
+}
+
+FILES_${PN}_append = " ${bindir}/start_lin_demo.sh"
diff --git a/recipes-platform/packagegroups/packagegroup-agl-demo-platform.bb b/recipes-platform/packagegroups/packagegroup-agl-demo-platform.bb
index d79a36b9..f3191ca1 100755
--- a/recipes-platform/packagegroups/packagegroup-agl-demo-platform.bb
+++ b/recipes-platform/packagegroups/packagegroup-agl-demo-platform.bb
@@ -22,8 +22,8 @@ RDEPENDS_${PN} += "\
 
 MOST_DRIVERS = " \
     most \
-    sllin \
     "
+MOST_DRIVERS_append_m3ulcb = " sllin"
 
 # HVAC dependencies depend on drivers above
 MOST_HVAC = " "