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Commit 1a87d942 authored by Chris Boot's avatar Chris Boot Committed by Linus Torvalds
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[PATCH] LED Class support for Soekris net48xx 



Add LED Class device support for the Soekris net48xx Error LED.  Tested
only on a net4801, but should work on a net4826 as well.  I'd love to find
a way of detecting a Soekris net48xx device but there is no DMI or any
Soekris-specific PCI devices.

[akpm@osdl.org: fixlets, cleanups]
Signed-off-by: default avatarChris Boot <bootc@bootc.net>
Cc: Ben Dooks <ben-linux@fluff.org>
Cc: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
parent 36cf96f5

MAINTAINERS

+5 −0
Original line number Diff line number Diff line
@@ -2666,6 +2666,11 @@ M: shemminger@osdl.org 
L:	netdev@vger.kernel.org

S:	Maintained



SOEKRIS NET48XX LED SUPPORT

P:	Chris Boot

M:	bootc@bootc.net

S:	Maintained



SPARC (sparc32):

P:	William L. Irwin

M:	wli@holomorphy.com

drivers/leds/Kconfig

+7 −0
Original line number Diff line number Diff line
@@ -69,6 +69,13 @@ config LEDS_AMS_DELTA 
	help

	  This option enables support for the LEDs on Amstrad Delta (E3).



config LEDS_NET48XX

	tristate "LED Support for Soekris net48xx series Error LED"

	depends on LEDS_CLASS && SCx200_GPIO

	help

	  This option enables support for the Soekris net4801 and net4826 error

	  LED.



comment "LED Triggers"



config LEDS_TRIGGERS

drivers/leds/Makefile

+1 −0
Original line number Diff line number Diff line
@@ -12,6 +12,7 @@ obj-$(CONFIG_LEDS_IXP4XX) += leds-ixp4xx-gpio.o 
obj-$(CONFIG_LEDS_TOSA)			+= leds-tosa.o

obj-$(CONFIG_LEDS_S3C24XX)		+= leds-s3c24xx.o

obj-$(CONFIG_LEDS_AMS_DELTA)		+= leds-ams-delta.o

obj-$(CONFIG_LEDS_NET48XX)		+= leds-net48xx.o



# LED Triggers

obj-$(CONFIG_LEDS_TRIGGER_TIMER)	+= ledtrig-timer.o

drivers/leds/leds-net48xx.c

0 → 100644
+115 −0
Original line number Diff line number Diff line 
/*

 * LEDs driver for Soekris net48xx

 *

 * Copyright (C) 2006 Chris Boot <bootc@bootc.net>

 *

 * Based on leds-ams-delta.c

 *

 * 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/platform_device.h>

#include <linux/leds.h>

#include <linux/err.h>

#include <asm/io.h>

#include <linux/scx200_gpio.h>



#define NET48XX_ERROR_LED_GPIO	20



static struct platform_device *pdev;



static void net48xx_error_led_set(struct led_classdev *led_cdev,

		enum led_brightness value)

{

	if (value)

		scx200_gpio_set_high(NET48XX_ERROR_LED_GPIO);

	else

		scx200_gpio_set_low(NET48XX_ERROR_LED_GPIO);

}



static struct led_classdev net48xx_error_led = {

	.name		= "net48xx:error",

	.brightness_set	= net48xx_error_led_set,

};



#ifdef CONFIG_PM

static int net48xx_led_suspend(struct platform_device *dev,

		pm_message_t state)

{

	led_classdev_suspend(&net48xx_error_led);

	return 0;

}



static int net48xx_led_resume(struct platform_device *dev)

{

	led_classdev_resume(&net48xx_error_led);

	return 0;

}

#else

#define net48xx_led_suspend NULL

#define net48xx_led_resume NULL

#endif



static int net48xx_led_probe(struct platform_device *pdev)

{

	return led_classdev_register(&pdev->dev, &net48xx_error_led);

}



static int net48xx_led_remove(struct platform_device *pdev)

{

	led_classdev_unregister(&net48xx_error_led);

	return 0;

}



static struct platform_driver net48xx_led_driver = {

	.driver.owner	= THIS_MODULE,

	.probe		= net48xx_led_probe,

	.remove		= net48xx_led_remove,

	.suspend	= net48xx_led_suspend,

	.resume		= net48xx_led_resume,

	.driver		= {

		.name = "net48xx-led",

	},

};



static int __init net48xx_led_init(void)

{

	int ret;



	if (!scx200_gpio_present()) {

		ret = -ENODEV;

		goto out;

	}



	ret = platform_driver_register(&net48xx_led_driver);

	if (ret < 0)

		goto out;



	pdev = platform_device_register_simple("net48xx-led", -1, NULL, 0);

	if (IS_ERR(pdev)) {

		ret = PTR_ERR(pdev);

		platform_driver_unregister(&net48xx_led_driver);

		goto out;

	}



out:

	return ret;

}



static void __exit net48xx_led_exit(void)

{

	platform_device_unregister(pdev);

	platform_driver_unregister(&net48xx_led_driver);

}



module_init(net48xx_led_init);

module_exit(net48xx_led_exit);



MODULE_AUTHOR("Chris Boot <bootc@bootc.net>");

MODULE_DESCRIPTION("Soekris net48xx LED driver");

MODULE_LICENSE("GPL");