linux-dey: update device tree depending on variant

https://jira.digi.com/browse/DEL-641
https://jira.digi.com/browse/DEL-644

Signed-off-by: Javier Viguera <javier.viguera@digi.com>

meta-digi-arm/recipes-kernel/linux/linux-dey_3.10.bb

@@ -12,6 +12,13 @@ PR = "${DISTRO}.${INC_PR}.0"
 LOCALVERSION_mxs = "mxs"
 LOCALVERSION_cpx2_mxs = "mxs+gateways"
 
+# Features to configure DTS and kernel config
+HAVE_WIFI    = "${@base_contains('MACHINE_FEATURES', 'wifi', '1', '', d)}"
+HAVE_EXT_ETH = "${@base_contains('MACHINE_FEATURES', 'ext-eth', '1', '', d)}"
+HAVE_BT      = "${@base_contains('MACHINE_FEATURES', 'bluetooth', '1', '', d)}"
+HAVE_1WIRE   = "${@base_contains('MACHINE_FEATURES', '1-wire', '1', '', d)}"
+HAVE_GUI     = "${@base_contains('DISTRO_FEATURES', 'x11', '1', '', d)}"
+
 # Preferably configure kernel through device tree.
 KERNEL_CFG_FRAGS ?= ""
 
@@ -25,6 +32,41 @@ S = "${WORKDIR}/git"
 KERNEL_DEVICETREE = "${S}/arch/arm/boot/dts/${DTSNAME}.dts"
 KERNEL_EXTRA_ARGS = "LOADADDR=${UBOOT_LOADADDRESS}"
 
+config_dts() {
+	if [ "${1}" = "enable" ]; then
+		sed  -i -e "/${2}/{s,^///include,/include,g}" ${KERNEL_DEVICETREE}
+	elif [ "${1}" = "disable" ]; then
+		sed  -i -e "/${2}/{s,^/include,///include,g}" ${KERNEL_DEVICETREE}
+	fi
+}
+
+do_update_dts() {
+	if [ -n "${HAVE_WIFI}" ]; then
+		config_dts enable '_ssp2_mmc_wifi'
+	fi
+	if [ -n "${HAVE_EXT_ETH}" ]; then
+		config_dts enable '_ethernet1[^_]'
+	fi
+	if [ -n "${HAVE_BT}" ]; then
+		config_dts enable '_auart0_bluetooth'
+	fi
+	if [ -n "${HAVE_1WIRE}" ]; then
+		config_dts enable  '_onewire_i2c1'
+		config_dts disable '_auart2_4wires'
+	fi
+	if [ -n "${HAVE_GUI}" ]; then
+		# Enable LCD
+		config_dts enable  '_display_'
+		config_dts disable '_auart1_'
+		# Enable touch
+		config_dts enable  '_lradc_touchscreen'
+		config_dts disable '_ssp1_'
+		config_dts disable '_auart1_4wires'
+		config_dts disable '_ethernet0_leds'
+	fi
+}
+addtask update_dts before do_install after do_sizecheck
+
 FILES_kernel-image += "/boot/config*"
 
 COMPATIBLE_MACHINE = "(mxs)"