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Commit 21c854dc authored by Aurelien Jarno's avatar Aurelien Jarno Committed by Ralf Baechle
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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: default avatarAurelien Jarno <aurelien@aurel32.net>
Signed-off-by: default avatarRalf Baechle <ralf@linux-mips.org>
parent 34cc662f

arch/mips/bcm47xx/Makefile

+1 −1
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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

arch/mips/bcm47xx/wgt634u.c

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/*

 * 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);