Add udev rules and scripts for demo platform configurationicefish_8.99.3icefish/8.99.38.99.3

Add recipes for udev rules and associated scripts
1) Support USB attached I2C devices for RTC and HVAC LED support.
   The RTC support loads and configures the required rtc-ds1307
   driver, and sets the time from the RTC clock.  The HVAC LED
   support configures the LED device names for use by the HVAC
   binding.

The new demo-i2c-udev-conf recipe is
added to DEMO_PLATFORM_CONF variable in packagegroup-agl-demo-platform
to have them added to the agl-demo-platform image.  Since they use
udev rules to detect the corresponding hardware, this should be safe
for all platforms.

Change-Id: Id08571b43c7ae9275496980e0a5568e145a1f653
Signed-off-by: Jan-Simon Moeller <jsmoeller@linuxfoundation.org>

6 files changed, 72 insertions, 0 deletions

diff --git a/recipes-core/udev/demo-i2c-udev-conf/99-agl-led-rtc.rules b/recipes-core/udev/demo-i2c-udev-conf/99-agl-led-rtc.rules
new file mode 100644
index 000000000..34fa06784
--- /dev/null
+++ b/recipes-core/udev/demo-i2c-udev-conf/99-agl-led-rtc.rules
@@ -0,0 +1,20 @@
+# skip instantiation of rtc in this processing
+ACTION=="add", SUBSYSTEM=="i2c", DRIVER=="rtc-ds1307", GOTO="hwclock_end"
+
+# load the required drivers (if not already present) - your job to make sure they are there !
+ACTION=="add", ENV{DEVTYPE}=="usb_interface", ENV{DRIVER}=="i2c-tiny-usb", RUN+="/usr/bin/logger 'Loading leds-blinkm'", RUN+="/sbin/modprobe leds-blinkm"
+ACTION=="add", ENV{DEVTYPE}=="usb_interface", ENV{DRIVER}=="i2c-tiny-usb", RUN+="/usr/bin/logger 'Loading rtc driver'", RUN+="/sbin/modprobe rtc-ds1307"
+
+# %k is the blinkm i2c device e.g. 6-0009
+ACTION=="add", ENV{DRIVER}=="blinkm", SUBSYSTEM=="i2c", RUN+="/usr/bin/logger 'the blinkm device is %k'", TAG+="systemd", ENV{SYSTEMD_WANTS}="hvac-json-in-rewrite@%k.service", GOTO="very_end"
+# FIXME: We do not exclude the blinkm on the next lines, yet. The rule is too broad, but that is all we know already. Above is actually later in time.
+#        For now this is not critical as the rtc init will just fail and we're done.
+
+# %k is the i2c bus e.g. i2c-6
+ACTION=="add", SUBSYSTEM=="i2c", ATTRS{idProduct}=="c631", TAG+="systemd", ENV{SYSTEMD_WANTS}="rtc-i2c-attach@%k.service"
+
+# GOTO EXIT
+LABEL="hwclock_end"
+ACTION=="add", SUBSYSTEM=="rtc", RUN+="/bin/sleep 1", RUN+="/sbin/hwclock -f /dev/%k --hctosys --utc", TAG+="systemd"
+
+LABEL="very_end"
diff --git a/recipes-core/udev/demo-i2c-udev-conf/hvac-json-in-rewrite.sh b/recipes-core/udev/demo-i2c-udev-conf/hvac-json-in-rewrite.sh
new file mode 100755
index 000000000..555766015
--- /dev/null
+++ b/recipes-core/udev/demo-i2c-udev-conf/hvac-json-in-rewrite.sh
@@ -0,0 +1,22 @@
+#!/bin/bash
+
+# (C) 2018 Jan-Simon Möller, dl9pf@gmx.de, jsmoeller@linuxfoundation.org
+# License: Apache License 2.0
+
+#set -x
+set -e
+
+if [ $1 ] ; then
+    # The device is always 0009 -> 9 . Only change is the i2c IF .
+    LED=`echo $1 | sed -e "s#0009#9#g"`
+    if [ $? -eq 0 ] ; then
+	echo "$LED"
+	sed -e "s#@DEVICE@#$LED#" /etc/hvac.json.in > /etc/hvac.json
+    else
+	echo "Invalid argument"
+	exit 1
+    fi
+else
+    echo "Need argument"
+    exit 1
+fi
\ No newline at end of file
diff --git a/recipes-core/udev/demo-i2c-udev-conf/hvac-json-in-rewrite@.service b/recipes-core/udev/demo-i2c-udev-conf/hvac-json-in-rewrite@.service
new file mode 100644
index 000000000..2fb099593
--- /dev/null
+++ b/recipes-core/udev/demo-i2c-udev-conf/hvac-json-in-rewrite@.service
@@ -0,0 +1,8 @@
+[Unit]
+Description=AGL hvac LED write /etc/hvac.json
+#Before= todo: add dependency of hvac service ?
+
+[Service]
+Type=oneshot
+ExecStartPre=/usr/bin/logger '#hvac i2c device has been attached - %i'
+ExecStart=/usr/sbin/hvac-json-in-rewrite.sh %i
diff --git a/recipes-core/udev/demo-i2c-udev-conf/hvac.json.in b/recipes-core/udev/demo-i2c-udev-conf/hvac.json.in
new file mode 100644
index 000000000..01541a600
--- /dev/null
+++ b/recipes-core/udev/demo-i2c-udev-conf/hvac.json.in
@@ -0,0 +1,7 @@
+{
+    "ledtemp": {
+	"red": "/sys/class/leds/blinkm-@DEVICE@-red/brightness",
+	"green": "/sys/class/leds/blinkm-@DEVICE@-green/brightness",
+	"blue": "/sys/class/leds/blinkm-@DEVICE@-blue/brightness"
+    }
+}
diff --git a/recipes-core/udev/demo-i2c-udev-conf/rtc-i2c-attach.sh b/recipes-core/udev/demo-i2c-udev-conf/rtc-i2c-attach.sh
new file mode 100755
index 000000000..b45d83aae
--- /dev/null
+++ b/recipes-core/udev/demo-i2c-udev-conf/rtc-i2c-attach.sh
@@ -0,0 +1,11 @@
+#!/bin/bash
+
+# ds1307
+echo "ds1307 0x68" > /sys/class/i2c-dev/$1/device/new_device
+
+#ds3231
+#echo "ds1307 0x57" > /sys/class/i2c-dev/$1/device/new_device
+
+#pcf85063
+#echo "pcf85063 0x51" > /sys/class/i2c-dev/$1/device/new_device
+
diff --git a/recipes-core/udev/demo-i2c-udev-conf/rtc-i2c-attach@.service b/recipes-core/udev/demo-i2c-udev-conf/rtc-i2c-attach@.service
new file mode 100644
index 000000000..8788a25d4
--- /dev/null
+++ b/recipes-core/udev/demo-i2c-udev-conf/rtc-i2c-attach@.service
@@ -0,0 +1,4 @@
+[Service]
+Type=oneshot
+ExecStartPre=/bin/echo '#i2c rtc device has been attached'
+ExecStart=/usr/sbin/rtc-i2c-attach.sh %i