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Backport of basic GPIO control (r46271)

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I relaxed the board name pattern for CPE devices
This commit is contained in:
Julian Kornberger 2016-02-15 19:18:34 +01:00
parent 0fd4ff0a68
commit d202964048
1 changed files with 144 additions and 0 deletions
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144
patches/openwrt/0039-base-files-implemented-basic-GPIO-control.patch Normal file
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@ -0,0 +1,144 @@
From 24d54f8b0c6b18e5ec1f8c202afdbae14d347737 Mon Sep 17 00:00:00 2001
From: blogic <blogic@3c298f89-4303-0410-b956-a3cf2f4a3e73>
Date: Wed, 8 Jul 2015 14:25:52 +0000
Subject: [PATCH] base-files: implemented basic GPIO control
Internal GPIO pins are used for PoE passthrough setups in multi-port
routers. This patch implemnets control over this hardware feature for
Ubiquiti Nanostations and TP-Link CPE510.
Signed-off-by: Lars Kruse <lists@sumpfralle.de>
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@46271 3c298f89-4303-0410-b956-a3cf2f4a3e73
---
package/base-files/files/etc/init.d/gpio_switch | 42 ++++++++++++++++++++++
.../base-files/files/lib/functions/uci-defaults.sh | 24 +++++++++++++
.../base-files/etc/uci-defaults/01_gpio-switches | 25 +++++++++++++
3 files changed, 91 insertions(+)
create mode 100755 package/base-files/files/etc/init.d/gpio_switch
create mode 100644 target/linux/ar71xx/base-files/etc/uci-defaults/01_gpio-switches
diff --git a/package/base-files/files/etc/init.d/gpio_switch b/package/base-files/files/etc/init.d/gpio_switch
new file mode 100755
index 0000000..1f1b44b
--- /dev/null
+++ b/package/base-files/files/etc/init.d/gpio_switch
@@ -0,0 +1,42 @@
+#!/bin/sh /etc/rc.common
+# Copyright (C) 2015 OpenWrt.org
+
+START=98
+STOP=10
+USE_PROCD=1
+
+
+load_gpio_switch()
+{
+ local name
+ local gpio_pin
+ local value
+
+ config_get gpio_pin "$1" gpio_pin
+ config_get name "$1" name
+ config_get value "$1" value 0
+
+ local gpio_path="/sys/class/gpio/gpio${gpio_pin}"
+ # export GPIO pin for access
+ [ -d "$gpio_path" ] || {
+ echo "$gpio_pin" >/sys/class/gpio/export
+ # we need to wait a bit until the GPIO appears
+ [ -d "$gpio_path" ] || sleep 1
+ echo out >"$gpio_path/direction"
+ }
+ # write 0 or 1 to the "value" field
+ { [ "$value" = "0" ] && echo "0" || echo "1"; } >"$gpio_path/value"
+}
+
+service_triggers()
+{
+ procd_add_reload_trigger "system"
+}
+
+start_service()
+{
+ [ -e /sys/class/gpio/ ] && {
+ config_load system
+ config_foreach load_gpio_switch gpio_switch
+ }
+}
diff --git a/package/base-files/files/lib/functions/uci-defaults.sh b/package/base-files/files/lib/functions/uci-defaults.sh
index 5a8809d..6577ecd 100644
--- a/package/base-files/files/lib/functions/uci-defaults.sh
+++ b/package/base-files/files/lib/functions/uci-defaults.sh
@@ -2,6 +2,7 @@
# Copyright (C) 2011 OpenWrt.org
UCIDEF_LEDS_CHANGED=0
+UCIDEF_GPIO_SWITCHES_CHANGED=0
ucidef_set_led_netdev() {
local cfg="led_$1"
@@ -180,6 +181,29 @@ ucidef_commit_leds()
[ "$UCIDEF_LEDS_CHANGED" = "1" ] && uci commit system
}
+ucidef_set_gpio_switch() {
+ local cfg="gpio_switch_$1"
+ local name="$2"
+ local gpio_pin="$3"
+ # use "0" as default value
+ local default="${4:-0}"
+
+ uci -q get "system.$cfg" && return 0
+
+ uci batch <<EOF
+set system.$cfg='gpio_switch'
+set system.$cfg.name='$name'
+set system.$cfg.gpio_pin='$gpio_pin'
+set system.$cfg.value='$default'
+EOF
+ UCIDEF_GPIO_SWITCHES_CHANGED=1
+}
+
+ucidef_commit_gpio_switches()
+{
+ [ "$UCIDEF_GPIO_SWITCHES_CHANGED" = "1" ] && uci commit system
+}
+
ucidef_set_interface_loopback() {
uci batch <<EOF
set network.loopback='interface'
diff --git a/target/linux/ar71xx/base-files/etc/uci-defaults/01_gpio-switches b/target/linux/ar71xx/base-files/etc/uci-defaults/01_gpio-switches
new file mode 100644
index 0000000..81d3982
--- /dev/null
+++ b/target/linux/ar71xx/base-files/etc/uci-defaults/01_gpio-switches
@@ -0,0 +1,25 @@
+#!/bin/sh
+#
+# Copyright (C) 2015 OpenWrt.org
+#
+
+. /lib/functions/uci-defaults.sh
+. /lib/ar71xx.sh
+
+board=$(ar71xx_board_name)
+
+case "$board" in
+nanostation-m)
+ ucidef_set_gpio_switch "poe_passthrough" "PoE Passthrough" "2"
+ ;;
+nanostation-m-xw)
+ ucidef_set_gpio_switch "poe_passthrough" "PoE Passthrough" "8"
+ ;;
+cpe*)
+ ucidef_set_gpio_switch "poe_passthrough" "PoE Passthrough" "20"
+ ;;
+esac
+
+ucidef_commit_gpio_switches
+
+exit 0
--
2.1.4