add LEDs trigger for switch port states, thanks to Bernhard Held (closes: #2153)

SVN-Revision: 9362
This commit is contained in:
Gabor Juhos 2007-10-20 07:45:08 +00:00
parent 4c093ed622
commit d2cfb2934f
5 changed files with 195 additions and 1 deletions

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@ -279,12 +279,29 @@ define KernelPackage/leds-adm5120
endef
define KernelPackage/leds-adm5120/description
Kernel module for LEDs on ADM5120 based boards
Kernel module for LEDs on ADM5120 based boards.
endef
$(eval $(call KernelPackage,leds-adm5120))
define KernelPackage/ledtrig-adm5120-switch
SUBMENU:=$(OTHER_MENU)
TITLE:=LED ADM5120 Switch Port Status Trigger
DEPENDS:=@TARGET_adm5120
KCONFIG:=CONFIG_LEDS_TRIGGER_ADM5120_SWITCH
FILES:=$(LINUX_DIR)/drivers/leds/ledtrig-adm5120-switch.$(LINUX_KMOD_SUFFIX)
AUTOLOAD:=$(call AutoLoad,50,ledtrig-adm5120-switch)
endef
define KernelPackage/ledtrig-adm5120-switch/description
Kernel module to allow LEDs to be controlled by the port states
of the ADM5120 built-in ethernet switch.
endef
$(eval $(call KernelPackage,ledtrig-adm5120-switch))
define KernelPackage/leds-net48xx
SUBMENU:=$(OTHER_MENU)
TITLE:=Soekris Net48xx LED support

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@ -0,0 +1,149 @@
/*
* LED ADM5120 Switch Port State Trigger
*
* Copyright (C) 2007 Bernhard Held <bernhard at bernhardheld.de>
* Copyright (C) 2007 Gabor Juhos <juhosg at openwrt.org>
*
* This file was based on: drivers/leds/ledtrig-timer.c
* Copyright 2005-2006 Openedhand Ltd.
* Author: Richard Purdie
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
*/
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/device.h>
#include <asm/gpio.h>
#include "leds.h"
#define DRV_NAME "port_state"
#define DRV_DESC "LED ADM5120 Switch Port State Trigger"
struct port_state {
char *name;
unsigned int value;
};
#define PORT_STATE(n,v) {.name = (n), .value = (v)}
static struct port_state port_states[] = {
PORT_STATE("off", LED_OFF),
PORT_STATE("on", LED_FULL),
PORT_STATE("flash", ADM5120_GPIO_FLASH),
PORT_STATE("link", ADM5120_GPIO_LINK),
PORT_STATE("speed", ADM5120_GPIO_SPEED),
PORT_STATE("duplex", ADM5120_GPIO_DUPLEX),
PORT_STATE("act", ADM5120_GPIO_ACT),
PORT_STATE("coll", ADM5120_GPIO_COLL),
PORT_STATE("link_act", ADM5120_GPIO_LINK_ACT),
PORT_STATE("duplex_coll", ADM5120_GPIO_DUPLEX_COLL),
PORT_STATE("10M_act", ADM5120_GPIO_10M_ACT),
PORT_STATE("100M_act", ADM5120_GPIO_100M_ACT),
};
static ssize_t led_port_state_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct led_classdev *led_cdev = dev_get_drvdata(dev);
struct port_state *state = led_cdev->trigger_data;
int len = 0;
int i;
*buf = '\0';
for (i = 0; i < ARRAY_SIZE(port_states); i++) {
if (&port_states[i] == state)
len += sprintf(buf+len, "[%s] ", port_states[i].name);
else
len += sprintf(buf+len, "%s ", port_states[i].name);
}
len += sprintf(buf+len, "\n");
return len;
}
static ssize_t led_port_state_store(struct device *dev,
struct device_attribute *attr, const char *buf, size_t size)
{
struct led_classdev *led_cdev = dev_get_drvdata(dev);
size_t len;
int i;
for (i = 0; i < ARRAY_SIZE(port_states); i++) {
len = strlen(port_states[i].name);
if (strncmp(port_states[i].name, buf, len) != 0)
continue;
if (buf[len] != '\0' && buf[len] != '\n')
continue;
led_cdev->trigger_data = &port_states[i];
led_set_brightness(led_cdev, port_states[i].value);
return size;
}
return -EINVAL;
}
static DEVICE_ATTR(port_state, 0644, led_port_state_show,
led_port_state_store);
static void adm5120_switch_trig_activate(struct led_classdev *led_cdev)
{
struct port_state *state = port_states;
int rc;
led_cdev->trigger_data = state;
rc = device_create_file(led_cdev->dev, &dev_attr_port_state);
if (rc)
goto err;
led_set_brightness(led_cdev, state->value);
return;
err:
led_cdev->trigger_data = NULL;
}
static void adm5120_switch_trig_deactivate(struct led_classdev *led_cdev)
{
struct port_state *state = led_cdev->trigger_data;
if (!state)
return;
device_remove_file(led_cdev->dev, &dev_attr_port_state);
}
static struct led_trigger adm5120_switch_led_trigger = {
.name = DRV_NAME,
.activate = adm5120_switch_trig_activate,
.deactivate = adm5120_switch_trig_deactivate,
};
static int __init adm5120_switch_trig_init(void)
{
led_trigger_register(&adm5120_switch_led_trigger);
return 0;
}
static void __exit adm5120_switch_trig_exit(void)
{
led_trigger_unregister(&adm5120_switch_led_trigger);
}
module_init(adm5120_switch_trig_init);
module_exit(adm5120_switch_trig_exit);
MODULE_AUTHOR("Bernhard Held <bernhard at bernhardheld.de>, "
"Gabor Juhos <juhosg at openwrt.org>");
MODULE_DESCRIPTION(DRV_DESC);
MODULE_LICENSE("GPL");

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@ -0,0 +1,26 @@
Index: linux-2.6.23/drivers/leds/Kconfig
===================================================================
--- linux-2.6.23.orig/drivers/leds/Kconfig
+++ linux-2.6.23/drivers/leds/Kconfig
@@ -152,4 +152,12 @@ config LEDS_TRIGGER_MORSE
tristate "LED Morse Trigger"
depends on LEDS_TRIGGERS
+config LEDS_TRIGGER_ADM5120_SWITCH
+ tristate "LED ADM5120 Switch Port Status Trigger"
+ depends on LEDS_TRIGGERS && LEDS_ADM5120
+ help
+ This allows LEDs to be controlled by the port states of
+ the ADM5120 built-in Ethernet Switch
+ If unsure, say N.
+
endif # NEW_LEDS
Index: linux-2.6.23/drivers/leds/Makefile
===================================================================
--- linux-2.6.23.orig/drivers/leds/Makefile
+++ linux-2.6.23/drivers/leds/Makefile
@@ -24,3 +24,4 @@ obj-$(CONFIG_LEDS_TRIGGER_TIMER) += ledt
obj-$(CONFIG_LEDS_TRIGGER_IDE_DISK) += ledtrig-ide-disk.o
obj-$(CONFIG_LEDS_TRIGGER_HEARTBEAT) += ledtrig-heartbeat.o
obj-$(CONFIG_LEDS_TRIGGER_MORSE) += ledtrig-morse.o
+obj-$(CONFIG_LEDS_TRIGGER_ADM5120_SWITCH) += ledtrig-adm5120-switch.o

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@ -92,6 +92,7 @@ CONFIG_LEDS_ADM5120=m
CONFIG_LEDS_ADM5120_DIAG=y
# CONFIG_LEDS_ADM5120_EXPERIMENTAL is not set
CONFIG_LEDS_GPIO=m
CONFIG_LEDS_TRIGGER_ADM5120_SWITCH=m
CONFIG_LEGACY_PTYS=y
CONFIG_LEGACY_PTY_COUNT=256
# CONFIG_LEMOTE_FULONG is not set

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@ -92,6 +92,7 @@ CONFIG_LEDS_ADM5120=m
CONFIG_LEDS_ADM5120_DIAG=y
# CONFIG_LEDS_ADM5120_EXPERIMENTAL is not set
CONFIG_LEDS_GPIO=m
CONFIG_LEDS_TRIGGER_ADM5120_SWITCH=m
CONFIG_LEGACY_PTYS=y
CONFIG_LEGACY_PTY_COUNT=256
# CONFIG_LEMOTE_FULONG is not set