Sound support for Raspberry Pi

Load appropriate kernel module and setup correct alsa configuration.
Sound is routed to HDMI by default, so include amixer util
that can be used to switch to analog output:
	amixer cset numid=3 1

Change-Id: I1a975992a45ea2a11ce44ded8b1649488e676341
Reviewed-by: Pasi Petäjäjärvi <pasi.petajajarvi@digia.com>

3 files changed, 11 insertions, 0 deletions

diff --git a/recipes/alsa/alsa-state.bbappend b/recipes/alsa/alsa-state.bbappend
new file mode 100644
index 0000000..72d991c
--- /dev/null
+++ b/recipes/alsa/alsa-state.bbappend
@@ -0,0 +1 @@
+FILESEXTRAPATHS_prepend := "${THISDIR}/${PN}:"
diff --git a/recipes/alsa/alsa-state/raspberrypi/asound.conf b/recipes/alsa/alsa-state/raspberrypi/asound.conf
new file mode 100644
index 0000000..83f7f9a
--- /dev/null
+++ b/recipes/alsa/alsa-state/raspberrypi/asound.conf
@@ -0,0 +1,9 @@
+pcm.!default {
+        type hw
+        card 0
+}
+
+ctl.!default {
+        type hw
+        card 0
+}
diff --git a/recipes/images/b2qt-embedded-image.bb b/recipes/images/b2qt-embedded-image.bb
index 6dc4f1f..feb1cfd 100644
--- a/recipes/images/b2qt-embedded-image.bb
+++ b/recipes/images/b2qt-embedded-image.bb
@@ -52,6 +52,7 @@ IMAGE_INSTALL += "\
         liberation-fonts \
         tslib \
         tslib-calibrate \
+        alsa-utils-amixer \
         ${GSTREAMER_EXTRA_INSTALL} \
         ${TOOLS_EXTRA_INSTALL} \
         ${MACHINE_EXTRA_INSTALL} \