134 lines
3.3 KiB
Diff
134 lines
3.3 KiB
Diff
From: Matthias Schiffer <mschiffer@universe-factory.net>
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Date: Mon, 7 Mar 2016 06:07:21 +0100
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Subject: base-files: implemented basic GPIO control
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Internal GPIO pins are used for PoE passthrough setups in multi-port
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routers. This patch implemnets control over this hardware feature for
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Ubiquiti Nanostations and TP-Link CPE510.
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Signed-off-by: Lars Kruse <lists@sumpfralle.de>
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Backport of r46271
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diff --git a/package/base-files/files/etc/init.d/gpio_switch b/package/base-files/files/etc/init.d/gpio_switch
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new file mode 100755
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index 0000000..1f1b44b
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--- /dev/null
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+++ b/package/base-files/files/etc/init.d/gpio_switch
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@@ -0,0 +1,42 @@
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+#!/bin/sh /etc/rc.common
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+# Copyright (C) 2015 OpenWrt.org
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+
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+START=98
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+STOP=10
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+USE_PROCD=1
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+
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+
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+load_gpio_switch()
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+{
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+ local name
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+ local gpio_pin
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+ local value
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+
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+ config_get gpio_pin "$1" gpio_pin
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+ config_get name "$1" name
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+ config_get value "$1" value 0
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+
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+ local gpio_path="/sys/class/gpio/gpio${gpio_pin}"
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+ # export GPIO pin for access
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+ [ -d "$gpio_path" ] || {
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+ echo "$gpio_pin" >/sys/class/gpio/export
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+ # we need to wait a bit until the GPIO appears
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+ [ -d "$gpio_path" ] || sleep 1
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+ echo out >"$gpio_path/direction"
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+ }
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+ # write 0 or 1 to the "value" field
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+ { [ "$value" = "0" ] && echo "0" || echo "1"; } >"$gpio_path/value"
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+}
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+
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+service_triggers()
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+{
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+ procd_add_reload_trigger "system"
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+}
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+
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+start_service()
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+{
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+ [ -e /sys/class/gpio/ ] && {
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+ config_load system
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+ config_foreach load_gpio_switch gpio_switch
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+ }
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+}
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diff --git a/package/base-files/files/lib/functions/uci-defaults.sh b/package/base-files/files/lib/functions/uci-defaults.sh
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index 5a8809d..6577ecd 100644
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--- a/package/base-files/files/lib/functions/uci-defaults.sh
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+++ b/package/base-files/files/lib/functions/uci-defaults.sh
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@@ -2,6 +2,7 @@
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# Copyright (C) 2011 OpenWrt.org
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UCIDEF_LEDS_CHANGED=0
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+UCIDEF_GPIO_SWITCHES_CHANGED=0
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ucidef_set_led_netdev() {
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local cfg="led_$1"
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@@ -180,6 +181,29 @@ ucidef_commit_leds()
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[ "$UCIDEF_LEDS_CHANGED" = "1" ] && uci commit system
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}
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+ucidef_set_gpio_switch() {
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+ local cfg="gpio_switch_$1"
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+ local name="$2"
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+ local gpio_pin="$3"
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+ # use "0" as default value
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+ local default="${4:-0}"
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+
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+ uci -q get "system.$cfg" && return 0
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+
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+ uci batch <<EOF
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+set system.$cfg='gpio_switch'
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+set system.$cfg.name='$name'
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+set system.$cfg.gpio_pin='$gpio_pin'
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+set system.$cfg.value='$default'
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+EOF
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+ UCIDEF_GPIO_SWITCHES_CHANGED=1
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+}
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+
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+ucidef_commit_gpio_switches()
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+{
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+ [ "$UCIDEF_GPIO_SWITCHES_CHANGED" = "1" ] && uci commit system
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+}
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+
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ucidef_set_interface_loopback() {
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uci batch <<EOF
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set network.loopback='interface'
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diff --git a/target/linux/ar71xx/base-files/etc/uci-defaults/01_gpio-switches b/target/linux/ar71xx/base-files/etc/uci-defaults/01_gpio-switches
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new file mode 100644
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index 0000000..81d3982
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--- /dev/null
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+++ b/target/linux/ar71xx/base-files/etc/uci-defaults/01_gpio-switches
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@@ -0,0 +1,25 @@
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+#!/bin/sh
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+#
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+# Copyright (C) 2015 OpenWrt.org
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+#
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+
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+. /lib/functions/uci-defaults.sh
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+. /lib/ar71xx.sh
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+
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+board=$(ar71xx_board_name)
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+
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+case "$board" in
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+nanostation-m)
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+ ucidef_set_gpio_switch "poe_passthrough" "PoE Passthrough" "2"
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+ ;;
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+nanostation-m-xw)
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+ ucidef_set_gpio_switch "poe_passthrough" "PoE Passthrough" "8"
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+ ;;
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+cpe510)
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+ ucidef_set_gpio_switch "poe_passthrough" "PoE Passthrough" "20"
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+ ;;
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+esac
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+
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+ucidef_commit_gpio_switches
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+
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+exit 0
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