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leds: Add LED driver for the Soekris net5501 board

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It is based on the previously submitted code by Alessandro Zummo, but is
changed to use the new GPIO driver with 2.6.33, and the driver has been
moved to drivers/leds where it belongs.

[akpm@linux-foundation.org: coding-style fixes]
[randy.dunlap@oracle.com: fix net5501 kconfig]
Signed-off-by: Bjarke Istrup Pedersen <gurligebis@gentoo.org>
Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Alessandro Zummo <a.zummo@towertech.it>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Richard Purdie <rpurdie@linux.intel.com>
This commit is contained in:
Bjarke Istrup Pedersen 2010-05-24 12:15:56 -07:00 committed by Richard Purdie
parent 98652efcea
commit 14e40f644b
3 changed files with 105 additions and 0 deletions
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10
drivers/leds/Kconfig
View file

@ -67,6 +67,16 @@ config LEDS_NET48XX
This option enables support for the Soekris net4801 and net4826 error
LED.
config LEDS_NET5501
tristate "LED Support for Soekris net5501 series Error LED"
depends on LEDS_CLASS && LEDS_TRIGGERS
depends on LEDS_GPIO_PLATFORM && GPIO_CS5535
select LEDS_TRIGGER_DEFAULT_ON
default n
help
Add support for the Soekris net5501 board (detection, error led
and GPIO).
config LEDS_FSG
tristate "LED Support for the Freecom FSG-3"
depends on MACH_FSG

1
drivers/leds/Makefile
View file

@ -13,6 +13,7 @@ obj-$(CONFIG_LEDS_MIKROTIK_RB532) += leds-rb532.o
obj-$(CONFIG_LEDS_S3C24XX) += leds-s3c24xx.o
obj-$(CONFIG_LEDS_AMS_DELTA) += leds-ams-delta.o
obj-$(CONFIG_LEDS_NET48XX) += leds-net48xx.o
obj-$(CONFIG_LEDS_NET5501) += leds-net5501.o
obj-$(CONFIG_LEDS_WRAP) += leds-wrap.o
obj-$(CONFIG_LEDS_ALIX2) += leds-alix2.o
obj-$(CONFIG_LEDS_H1940) += leds-h1940.o

94
drivers/leds/leds-net5501.c Normal file
View file

@ -0,0 +1,94 @@
/*
* Soekris board support code
*
* Copyright (C) 2008-2009 Tower Technologies
* Written by Alessandro Zummo <a.zummo@towertech.it>
*
* 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/init.h>
#include <linux/io.h>
#include <linux/string.h>
#include <linux/leds.h>
#include <linux/platform_device.h>
#include <linux/gpio.h>
#include <asm/geode.h>
static struct gpio_led net5501_leds[] = {
{
.name = "error",
.gpio = 6,
.default_trigger = "default-on",
},
};
static struct gpio_led_platform_data net5501_leds_data = {
.num_leds = ARRAY_SIZE(net5501_leds),
.leds = net5501_leds,
};
static struct platform_device net5501_leds_dev = {
.name = "leds-gpio",
.id = -1,
.dev.platform_data = &net5501_leds_data,
};
static void __init init_net5501(void)
{
platform_device_register(&net5501_leds_dev);
}
struct soekris_board {
u16 offset;
char *sig;
u8 len;
void (*init)(void);
};
static struct soekris_board __initdata boards[] = {
{ 0xb7b, "net5501", 7, init_net5501 }, /* net5501 v1.33/1.33c */
{ 0xb1f, "net5501", 7, init_net5501 }, /* net5501 v1.32i */
};
static int __init soekris_init(void)
{
int i;
unsigned char *rombase, *bios;
if (!is_geode())
return 0;
rombase = ioremap(0xffff0000, 0xffff);
if (!rombase) {
printk(KERN_INFO "Soekris net5501 LED driver failed to get rombase");
return 0;
}
bios = rombase + 0x20; /* null terminated */
if (strncmp(bios, "comBIOS", 7))
goto unmap;
for (i = 0; i < ARRAY_SIZE(boards); i++) {
unsigned char *model = rombase + boards[i].offset;
if (strncmp(model, boards[i].sig, boards[i].len) == 0) {
printk(KERN_INFO "Soekris %s: %s\n", model, bios);
if (boards[i].init)
boards[i].init();
break;
}
}
unmap:
iounmap(rombase);
return 0;
}
arch_initcall(soekris_init);