Initial commit

meta-ampere/meta-mitchell/recipes-ampere/platform/ampere-platform-init/gpio-lib.sh

@@ -0,0 +1,69 @@
+#!/bin/bash
+
+# Configure GPIO as output and set its value
+AST2600_GPIO_BASE=(
+    816
+    780
+)
+
+function gpio_configure_output() {
+	echo "$1" > /sys/class/gpio/export
+	echo out > /sys/class/gpio/gpio"$1"/direction
+	echo "$2" > /sys/class/gpio/gpio"$1"/value
+	echo "$1" > /sys/class/gpio/unexport
+}
+
+function gpio_get_val() {
+	echo "$1" > /sys/class/gpio/export
+	cat /sys/class/gpio/gpio"$1"/value
+	echo "$1" > /sys/class/gpio/unexport
+}
+
+# Configure GPIO as input
+function gpio_configure_input() {
+	echo "$1" > /sys/class/gpio/export
+	echo "in" > /sys/class/gpio/gpio"$1"/direction
+	echo "$1" > /sys/class/gpio/unexport
+}
+
+function gpio_name_set()
+{
+    str=$(gpiofind "$1")
+    #Verify error code when run gpiofind
+    if [ "$?" == '1' ]; then
+        echo "Invalid gpio name $1"
+    else
+        gpioid=$(echo "$str"|cut -c 9)
+        offset=$(echo "$str"|cut -d " " -f 2)
+        gpioPin=$(("$offset" + ${AST2600_GPIO_BASE[$gpioid]}))
+        gpio_configure_output "$gpioPin" "$2"
+    fi
+}
+
+function gpio_name_get()
+{
+    str=$(gpiofind "$1")
+    #Verify error code when run gpiofind
+    if [ "$?" == '1' ]; then
+        echo "Invalid gpio name $1"
+    else
+        offset=$(echo "$str"|cut -d " " -f 2)
+        gpioid=$(echo "$str"|cut -c 9)
+        gpioPin=$(("$offset" + ${AST2600_GPIO_BASE[$gpioid]}))
+        gpio_get_val "$gpioPin"
+    fi
+}
+
+function gpio_name_input()
+{
+    str=$(gpiofind "$1")
+    #Verify error code when run gpiofind
+    if [ "$?" == '1' ]; then
+        echo "Invalid gpio name $1"
+    else
+        gpioid=$(echo "$str"|cut -c 9)
+        offset=$(echo "$str"|cut -d " " -f 2)
+        gpioPin=$(("$offset" + ${AST2600_GPIO_BASE[$gpioid]}))
+        gpio_configure_input "$gpioPin"
+    fi
+}