meta-digi-dey: pulseaudio: reduce pulseaudio loading time

On boot, pulseaudio looks for the sound cards' corresponding profile sets, and
uses a default configuration if none is found. This was causing pulseaudio to
take up to 5 seconds trying every possible default profile.

This commit fixes this by creating a specific profile set for each of the sound
cards on the ccimx6sbc so pulseaudio doesn't spend time trying different
profiles that don't apply to our platform. It also adds udev rules so
pulseaudio knows which configuration to load for each card.

https://jira.digi.com/browse/DEL-2218

Signed-off-by: Gabriel Valcazar <gabriel.valcazar@digi.com>

meta-digi-dey/recipes-multimedia/pulseaudio/pulseaudio/dey-audio-hdmi.conf

@@ -0,0 +1,35 @@
+# This file is part of PulseAudio.
+#
+# PulseAudio is free software; you can redistribute it and/or modify
+# it under the terms of the GNU Lesser General Public License as
+# published by the Free Software Foundation; either version 2.1 of the
+# License, or (at your option) any later version.
+#
+# PulseAudio is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+# General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public License
+# along with PulseAudio; if not, see <http://www.gnu.org/licenses/>.
+
+; Audio profile for Digi ConnectCore 6 HDMI sound card
+;
+; Copyright (C) 2017 by Digi International Inc.
+;
+; This device has only one output (analog stereo)
+;
+; See default.conf for an explanation on the directives used here.
+
+[General]
+auto-profiles = no
+
+[Mapping analog-stereo]
+description = Analog Stereo
+device-strings = hw:%f
+channel-map = left,right
+direction = output
+
+[Profile output:analog-stereo]
+description = Analog Stereo Output
+output-mappings = analog-stereo

meta-digi-dey/recipes-multimedia/pulseaudio/pulseaudio/dey-audio-sgtl5000.conf

@@ -0,0 +1,69 @@
+# This file is part of PulseAudio.
+#
+# PulseAudio is free software; you can redistribute it and/or modify
+# it under the terms of the GNU Lesser General Public License as
+# published by the Free Software Foundation; either version 2.1 of the
+# License, or (at your option) any later version.
+#
+# PulseAudio is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+# General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public License
+# along with PulseAudio; if not, see <http://www.gnu.org/licenses/>.
+
+; Audio profile for Digi ConnectCore 6 SBC SGTL5000 sound card
+;
+; Copyright (C) 2017 by Digi International Inc.
+;
+; This device can operate in either mono or stereo for output, input or duplex
+;
+; Profile probing is skipped to save time during loading
+;
+; See default.conf for an explanation on the directives used here.
+
+[General]
+auto-profiles = no
+
+[Mapping analog-mono]
+description = Analog Mono
+device-strings = hw:%f
+channel-map = mono
+
+[Mapping analog-stereo]
+description = Analog Stereo
+device-strings = hw:%f
+channel-map = left,right
+
+[Profile input:analog-mono]
+description = Analog Mono Input
+input-mappings = analog-mono
+skip-probe = yes
+
+[Profile input:analog-stereo]
+description = Analog Stereo Input
+input-mappings = analog-stereo
+skip-probe = yes
+
+[Profile output:analog-mono]
+description = Analog Mono Output
+output-mappings = analog-mono
+skip-probe = yes
+
+[Profile output:analog-mono+input:analog-mono]
+description = Analog Mono Duplex
+output-mappings = analog-mono
+input-mappings = analog-mono
+skip-probe = yes
+
+[Profile output:analog-stereo]
+description = Analog Stereo Output
+output-mappings = analog-stereo
+skip-probe = yes
+
+[Profile output:analog-stereo+input:analog-stereo]
+description = Analog Stereo Duplex
+output-mappings = analog-stereo
+input-mappings = analog-stereo
+skip-probe = yes

meta-digi-dey/recipes-multimedia/pulseaudio/pulseaudio_%.bbappend

@@ -3,14 +3,27 @@
 FILESEXTRAPATHS_prepend := "${THISDIR}/${BPN}:"
 
 SRC_URI_append_ccimx6ulsbc = " file://0001-pulseaudio-keep-headphones-volume-in-platforms-witho.patch"
-SRC_URI_append_ccimx6sbc = " file://hdmi_hotplug.sh"
+SRC_URI_append_ccimx6sbc = " \
+    file://hdmi_hotplug.sh \
+    file://dey-audio-hdmi.conf \
+    file://dey-audio-sgtl5000.conf \
+"
 
 do_install_append_ccimx6sbc() {
 	install -d ${D}${sysconfdir}/udev/scripts
 	install -m 0755 ${WORKDIR}/hdmi_hotplug.sh ${D}${sysconfdir}/udev/scripts
 
+	install -d ${D}${datadir}/pulseaudio/alsa-mixer/profile-sets
+	install -m 0644 ${WORKDIR}/dey-audio-hdmi.conf ${D}${datadir}/pulseaudio/alsa-mixer/profile-sets
+	install -m 0644 ${WORKDIR}/dey-audio-sgtl5000.conf ${D}${datadir}/pulseaudio/alsa-mixer/profile-sets
+
 	cat >> ${D}${base_libdir}/udev/rules.d/90-pulseaudio.rules <<-_EOL_
 
+		# Digi ConnectCore 6 SBC HDMI
+		ATTRS{id}=="imxhdmisoc", ENV{PULSE_PROFILE_SET}="dey-audio-hdmi.conf"
+		# Digi ConnectCore 6 SBC SGTL5000
+		ATTRS{id}=="sgtl5000audio", ENV{PULSE_PROFILE_SET}="dey-audio-sgtl5000.conf"
+
 		SUBSYSTEM=="platform", KERNEL=="*hdmi_video", ACTION=="change", RUN+="/etc/udev/scripts/hdmi_hotplug.sh"
 	_EOL_
 }