From 4bb6f26b05450777d14aa96e10783066c2503dc2 Mon Sep 17 00:00:00 2001
From: John Klug <john.klug@multitech.com>
Date: Wed, 11 Nov 2020 16:17:52 -0600
Subject: Add new BSP submodule for Atmel Processors.

---
 recipes-bsp/multitech/mts-io/mts-io.mtcap.init | 122 +++++++++++++++++++++++++
 1 file changed, 122 insertions(+)
 create mode 100644 recipes-bsp/multitech/mts-io/mts-io.mtcap.init

(limited to 'recipes-bsp/multitech/mts-io/mts-io.mtcap.init')

diff --git a/recipes-bsp/multitech/mts-io/mts-io.mtcap.init b/recipes-bsp/multitech/mts-io/mts-io.mtcap.init
new file mode 100644
index 0000000..2642de9
--- /dev/null
+++ b/recipes-bsp/multitech/mts-io/mts-io.mtcap.init
@@ -0,0 +1,122 @@
+#!/bin/bash
+
+sysdir=/sys/devices/platform/mts-io
+
+i2c=/sys/bus/i2c/devices/
+
+DEVTREE="/sys/kernel/config/device-tree/overlays/"
+SYSFS="/usr/sbin/mts-io-sysfs"
+
+setwificap() {
+  WIFICAP=0
+  if  [[ -f ${sysdir}/capability/wifi ]] && (($(cat ${sysdir}/capability/wifi) == 1)) ; then
+    WIFICAP=1
+  fi
+}
+
+lora_init() {
+  # reset lora chip
+  mts-io-sysfs store lora/reset 1
+  mts-io-sysfs store lora/reset 0
+  usleep 100000
+  mts-io-sysfs store lora/reset 1
+}
+
+eth_init() {
+  # reset eth phy
+  mts-io-sysfs store eth-reset 1
+  mts-io-sysfs store eth-reset 0
+  usleep 100000
+  mts-io-sysfs store eth-reset 1
+}
+
+# Normal state when powered up
+wifi_init1() {
+  (($WIFICAP)) || return 0
+  # reset wlan
+  mts-io-sysfs store wlan-rst 0
+  # disable wlan
+  mts-io-sysfs store wlan-en 0
+}
+  
+wifi_init2() {
+  (($WIFICAP)) || return 0
+  mts-io-sysfs store wlan-en 1
+  usleep 30000  # 30mS according to WILC1000 spec.
+  mts-io-sysfs store wlan-rst 1
+}
+
+
+cell_init() {
+  # remove /dev/modem_at[0,1] symlinks
+  rm -f /dev/modem_at[0,1]
+
+  if [ -w /sys/devices/platform/mts-io/radio-power ] ; then
+    # power down the cellular chip gracefully
+    mts-io-sysfs store radio-power 0
+    # power up the cellular chip
+    mts-io-sysfs store radio-power 1
+  fi
+}
+
+start_lora_led_updater() {
+  lora-led-updater &
+}
+
+setdevtree() {
+    hw=$(${SYSFS} show hw-version)
+
+    # add device tree overlays, if they exist.
+    [[ -d /lib/dtoverlays ]] || return 1
+    (
+	cd /lib/dtoverlays
+	for f in $(ls ${hw}*) ; do
+            if ! [[ -d ${DEVTREE} ]] ; then
+		mount configfs
+	    fi
+	    f1=${f/#${hw}-/}
+	    f2=${f1/%.dtbo}
+            # f2 is the extracted device name
+            /bin/mkdir ${DEVTREE}/$f2
+	    /bin/cat $f >${DEVTREE}/$f2/dtbo
+	done
+    )
+}
+
+case $1 in
+  start)
+    # SPI driver for LoRa
+    modprobe spidev
+    # Point the firmware API at our i2c EEPROMs
+    echo -n ${i2c} > /sys/module/firmware_class/parameters/path
+    echo "Loading mts-io module"
+    modprobe -r atmel_mci
+    # Point the firmware API at our i2c EEPROMs
+    echo -n ${i2c} > /sys/module/firmware_class/parameters/path
+    modprobe mts_io
+	setdevtree
+    setwificap
+    wifi_init1
+    lora_init
+    eth_init
+    cell_init &
+    start_lora_led_updater
+    wifi_init2
+    modprobe atmel_mci
+    (($WIFICAP)) && modprobe wilc1000
+    (($WIFICAP)) && modprobe wilc1000-sdio
+    ;;
+
+  stop)
+    echo "Unloading mts-io module"
+    wifi_init1  # Power down wifi
+    modprobe -r wilc1000 >/dev/null 2>&1
+    modprobe -r wilc1000-sdio >/dev/null 2>&1
+    modprobe -r mts_io >/dev/null 2>&1
+    ;;
+
+  *)
+    echo "Usage: $0 {start|stop}"
+    exit 2
+    ;;
+esac
-- 
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