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[MIPS] GPIO LED driver for the WGT634U machine 

Add LED support to the WGT634U machine.  It uses the new gpio-led
driver and a platform driver for the pin definitions.
    
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
Aurelien Jarno 2007-09-25 15:43:07 +02:00 committed by Ralf Baechle
parent 34cc662f8a
commit 21c854dcbd
2 changed files with 65 additions and 1 deletions
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2
arch/mips/bcm47xx/Makefile
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@ -3,4 +3,4 @@
# under Linux.
#
obj-y := gpio.o irq.o prom.o serial.o setup.o time.o
obj-y := gpio.o irq.o prom.o serial.o setup.o time.o wgt634u.o

64
arch/mips/bcm47xx/wgt634u.c Normal file
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@ -0,0 +1,64 @@
/*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
* Copyright (C) 2007 Aurelien Jarno <aurelien@aurel32.net>
*/
#include <linux/platform_device.h>
#include <linux/module.h>
#include <linux/leds.h>
#include <linux/ssb/ssb.h>
#include <asm/mach-bcm47xx/bcm47xx.h>
/* GPIO definitions for the WGT634U */
#define WGT634U_GPIO_LED 3
#define WGT634U_GPIO_RESET 2
#define WGT634U_GPIO_TP1 7
#define WGT634U_GPIO_TP2 6
#define WGT634U_GPIO_TP3 5
#define WGT634U_GPIO_TP4 4
#define WGT634U_GPIO_TP5 1
static struct gpio_led wgt634u_leds[] = {
{
.name = "power",
.gpio = WGT634U_GPIO_LED,
.active_low = 1,
.default_trigger = "heartbeat",
},
};
static struct gpio_led_platform_data wgt634u_led_data = {
.num_leds = ARRAY_SIZE(wgt634u_leds),
.leds = wgt634u_leds,
};
static struct platform_device wgt634u_gpio_leds = {
.name = "leds-gpio",
.id = -1,
.dev = {
.platform_data = &wgt634u_led_data,
}
};
static int __init wgt634u_init(void)
{
/* There is no easy way to detect that we are running on a WGT634U
* machine. Use the MAC address as an heuristic. Netgear Inc. has
* been allocated ranges 00:09:5b:xx:xx:xx and 00:0f:b5:xx:xx:xx.
*/
u8 *et0mac = ssb_bcm47xx.sprom.r1.et0mac;
if (et0mac[0] == 0x00 &&
((et0mac[1] == 0x09 && et0mac[2] == 0x5b) ||
(et0mac[1] == 0x0f && et0mac[2] == 0xb5)))
return platform_device_register(&wgt634u_gpio_leds);
else
return -ENODEV;
}
module_init(wgt634u_init);