Merge branch 'feature/respeaker' into develop

- This compiles and install kernel drivers
- Configures seeed-voicecard
- No LED support as that should be done from within a skill

Be aware: The mic works! But as we are still in development
this is not yet fully implemented within Mycroft. From here
with we can start looking at the pulseaudio and precise issues/PR's

buildroot-external/Config.in

@@ -1,5 +1,6 @@
-menu "Additional libraries and applications"
+menu "Additional drivers, libraries and/or applications"
 	source "$BR2_EXTERNAL_MYCROFTOS_PATH/package/fann/Config.in"
+	source "$BR2_EXTERNAL_MYCROFTOS_PATH/package/respeaker/Config.in"
 endmenu
 menu "Additional external python modules"
         source "$BR2_EXTERNAL_MYCROFTOS_PATH/package/python-adapt-parser/Config.in"

buildroot-external/board/raspberrypi/config.txt

@@ -24,3 +24,8 @@ dtparam=audio=on
 
 # Disable rainbow color splash
 disable_splash=1
+
+# Enable some optional hardware interfaces
+dtparam=i2c_arm=on
+dtoverlay=i2s-mmap
+dtparam=i2s=on

buildroot-external/configs/mycroftos_rpi3_defconfig

@@ -171,12 +171,13 @@ BR2_PACKAGE_NANO=y
 BR2_PACKAGE_VIM=y
 BR2_TARGET_ROOTFS_EXT2=y
 BR2_TARGET_ROOTFS_EXT2_4=y
-BR2_TARGET_ROOTFS_EXT2_SIZE="768M"
+BR2_TARGET_ROOTFS_EXT2_SIZE="1024M"
 # BR2_TARGET_ROOTFS_TAR is not set
 BR2_PACKAGE_HOST_DOSFSTOOLS=y
 BR2_PACKAGE_HOST_GENIMAGE=y
 BR2_PACKAGE_HOST_MTOOLS=y
 BR2_PACKAGE_FANN=y
+BR2_PACKAGE_RESPEAKER=y
 BR2_PACKAGE_PYTHON_ADAPT_PARSER=y
 BR2_PACKAGE_PYTHON_COVERALLS=y
 BR2_PACKAGE_PYTHON_DEPRECATED=y

buildroot-external/package/respeaker/Config.in

@@ -0,0 +1,17 @@
+config BR2_PACKAGE_RESPEAKER
+	bool "respeaker"
+	select BR2_PACKAGE_RPI_USERLAND
+	select BR2_PACKAGE_DTC
+	select BR2_PACKAGE_DTC_PROGRAMS
+	help
+	  The ReSpeaker series is a family of 
+	  development boards designed to enable 
+	  a future where voice interface is part 
+	  of everyday human-device interaction. 
+	  Designed to be easily integrated (and 
+	  customized) into products, but also to 
+	  allow other services and products to be 
+	  easily integrated into it.
+
+	  https://respeaker.io/
+

buildroot-external/package/respeaker/S16respeaker_modules

@@ -0,0 +1,8 @@
+#!/bin/sh
+#
+# Load seeed-voicecard modules....
+#
+
+modprobe snd-soc-seeed-voicecard
+modprobe snd-soc-ac108
+modprobe snd-soc-wm8960

buildroot-external/package/respeaker/S60seeed_voicecard

@@ -0,0 +1,11 @@
+#!/bin/sh
+#
+# Configure seeed-voicecard....
+#
+
+echo "Starting seeed-voicecard..."
+mount -t configfs none /sys/kernel/config
+mkdir -p /boot
+mount -t vfat /dev/mmcblk0p1 /boot
+/usr/bin/seeed-voicecard
+touch /var/lock/seeed-voicecard

buildroot-external/package/respeaker/respeaker.hash

@@ -0,0 +1,2 @@
+# Locally computed
+sha256	9f38d832acbfc7f07a58f15222d2fdcc0a9215ede488ccafb5c89a3e8223883d  respeaker-be0812c70be29b0666a89f22a9d403cfb4c48fca.tar.gz

buildroot-external/package/respeaker/respeaker.mk

@@ -0,0 +1,31 @@
+################################################################################
+#
+# respeaker
+#
+################################################################################
+
+RESPEAKER_VERSION = be0812c70be29b0666a89f22a9d403cfb4c48fca
+RESPEAKER_SITE = $(call github,respeaker,seeed-voicecard,$(RESPEAKER_VERSION))
+RESPEAKER_LICENSE = GNU General Public License v3.0
+RESPEAKER_DEPENDENCIES = rpi-firmware rpi-userland dtc
+
+$(eval $(kernel-module))
+
+define RESPEAKER_INSTALL_TARGET_CMDS
+	$(INSTALL) -D -m 0755 $(BR2_EXTERNAL_MYCROFTOS_PATH)/package/respeaker/S16respeaker_modules \
+		$(TARGET_DIR)/etc/init.d/S16respeaker_modules
+	$(INSTALL) -D -m 0755 $(BR2_EXTERNAL_MYCROFTOS_PATH)/package/respeaker/S60seeed_voicecard \
+                $(TARGET_DIR)/etc/init.d/S60seeed_voicecard
+
+	mkdir -p $(TARGET_DIR)/etc/voicecard
+	rm $(@D)/dkms.conf
+	$(INSTALL) -D -m 0644 $(@D)/*.conf $(TARGET_DIR)/etc/voicecard
+	$(INSTALL) -D -m 0644 $(@D)/*.state $(TARGET_DIR)/etc/voicecard
+	$(INSTALL) -D -m 0755 $(@D)/seeed-voicecard $(TARGET_DIR)/usr/bin
+
+	$(INSTALL) -D -m 0644 $(@D)/seeed-2mic-voicecard.dtbo $(BINARIES_DIR)/rpi-firmware/overlays/
+        $(INSTALL) -D -m 0644 $(@D)/seeed-4mic-voicecard.dtbo $(BINARIES_DIR)/rpi-firmware/overlays/
+        $(INSTALL) -D -m 0644 $(@D)/seeed-8mic-voicecard.dtbo $(BINARIES_DIR)/rpi-firmware/overlays/
+endef
+
+$(eval $(generic-package))