[meta-intel] [PATCH 09/11] meta-nuc: init script for configuring HDMI audio

[nitin.a.kamble at intel.com]

From: Nitin A Kamble <nitin.a.kamble at intel.com>

Provide an init script to check at boot time which HDMI port is connected
and configure the default ALSA audio out to that port.

Signed-off-by: Nitin A Kamble <nitin.a.kamble at intel.com>
---
 .../initscripts/initscripts/hdmi_port_audio.sh     |   28 ++++++++++++++++++++
 .../initscripts/initscripts_1.0.bbappend           |   10 +++++++
 2 files changed, 38 insertions(+), 0 deletions(-)
 create mode 100644 meta-nuc/recipes-core/initscripts/initscripts/hdmi_port_audio.sh
 create mode 100644 meta-nuc/recipes-core/initscripts/initscripts_1.0.bbappend

diff --git a/meta-nuc/recipes-core/initscripts/initscripts/hdmi_port_audio.sh b/meta-nuc/recipes-core/initscripts/initscripts/hdmi_port_audio.sh
new file mode 100644
index 0000000..69d8a53
--- /dev/null
+++ b/meta-nuc/recipes-core/initscripts/initscripts/hdmi_port_audio.sh
@@ -0,0 +1,28 @@
+#!/bin/sh
+### BEGIN INIT INFO
+# Provides:
+# Required-Start:
+# Required-Stop:
+# Default-Start:     S
+# Default-Stop:
+# Short-Description: Configure ALSA audio output to the connected HDMI port
+### END INIT INFO
+
+#
+# If both HDMI ports are connected then use HDMI0 for default ALSA audio out..
+
+ALSA_CONF_FILE="/etc/asound.conf"
+
+HDMI0_STATUS_FILE="/sys/class/drm/card0-HDMI-A-1/status"
+HDMI1_STATUS_FILE="/sys/class/drm/card0-HDMI-A-2/status"
+
+HDMI0_ALSA_CONF="hw:0,3"
+HDMI1_ALSA_CONF="hw:0,7"
+
+if [ -f "${HDMI0_STATUS_FILE}" ] && [ "`cat ${HDMI0_STATUS_FILE}`" == "connected" ]
+then
+	sed -i "s/pcm *\"hw:[0-9]*,[0-9]*\"/pcm \"${HDMI0_ALSA_CONF}\"/" ${ALSA_CONF_FILE}
+elif [ -f "${HDMI1_STATUS_FILE}" ] && [ "`cat ${HDMI1_STATUS_FILE}`" == "connected" ]
+then
+	sed -i "s/pcm \"hw:[0-9]*,[0-9]*\"/pcm \"${HDMI1_ALSA_CONF}\"/" ${ALSA_CONF_FILE}
+fi
diff --git a/meta-nuc/recipes-core/initscripts/initscripts_1.0.bbappend b/meta-nuc/recipes-core/initscripts/initscripts_1.0.bbappend
new file mode 100644
index 0000000..abc5fe0
--- /dev/null
+++ b/meta-nuc/recipes-core/initscripts/initscripts_1.0.bbappend
@@ -0,0 +1,10 @@
+FILESEXTRAPATHS_prepend := "${THISDIR}/${PN}:"
+
+SRC_URI += "file://hdmi_port_audio.sh"
+
+PR .= ".1"
+
+do_install_append() {
+	install -m 0755    ${WORKDIR}/hdmi_port_audio.sh       ${D}${sysconfdir}/init.d
+	ln -sf          ../init.d/hdmi_port_audio.sh   ${D}${sysconfdir}/rcS.d/S66hdmi_port_audio.sh
+}
-- 
1.7.3.4