[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: Chris Boot <bootc@bootc.net> Cc: Ben Dooks <ben-linux@fluff.org> Cc: Richard Purdie <rpurdie@rpsys.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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@ -2666,6 +2666,11 @@ M: shemminger@osdl.org
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L: netdev@vger.kernel.org
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L: netdev@vger.kernel.org
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S: Maintained
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S: Maintained
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SOEKRIS NET48XX LED SUPPORT
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P: Chris Boot
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M: bootc@bootc.net
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S: Maintained
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SPARC (sparc32):
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SPARC (sparc32):
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P: William L. Irwin
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P: William L. Irwin
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M: wli@holomorphy.com
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M: wli@holomorphy.com
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@ -69,6 +69,13 @@ config LEDS_AMS_DELTA
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help
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help
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This option enables support for the LEDs on Amstrad Delta (E3).
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This option enables support for the LEDs on Amstrad Delta (E3).
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config LEDS_NET48XX
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tristate "LED Support for Soekris net48xx series Error LED"
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depends on LEDS_CLASS && SCx200_GPIO
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help
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This option enables support for the Soekris net4801 and net4826 error
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LED.
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comment "LED Triggers"
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comment "LED Triggers"
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config LEDS_TRIGGERS
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config LEDS_TRIGGERS
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@ -12,6 +12,7 @@ obj-$(CONFIG_LEDS_IXP4XX) += leds-ixp4xx-gpio.o
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obj-$(CONFIG_LEDS_TOSA) += leds-tosa.o
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obj-$(CONFIG_LEDS_TOSA) += leds-tosa.o
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obj-$(CONFIG_LEDS_S3C24XX) += leds-s3c24xx.o
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obj-$(CONFIG_LEDS_S3C24XX) += leds-s3c24xx.o
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obj-$(CONFIG_LEDS_AMS_DELTA) += leds-ams-delta.o
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obj-$(CONFIG_LEDS_AMS_DELTA) += leds-ams-delta.o
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obj-$(CONFIG_LEDS_NET48XX) += leds-net48xx.o
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# LED Triggers
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# LED Triggers
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obj-$(CONFIG_LEDS_TRIGGER_TIMER) += ledtrig-timer.o
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obj-$(CONFIG_LEDS_TRIGGER_TIMER) += ledtrig-timer.o
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@ -0,0 +1,115 @@
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/*
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* LEDs driver for Soekris net48xx
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*
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* Copyright (C) 2006 Chris Boot <bootc@bootc.net>
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*
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* Based on leds-ams-delta.c
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#include <linux/kernel.h>
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#include <linux/init.h>
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#include <linux/platform_device.h>
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#include <linux/leds.h>
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#include <linux/err.h>
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#include <asm/io.h>
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#include <linux/scx200_gpio.h>
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#define NET48XX_ERROR_LED_GPIO 20
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static struct platform_device *pdev;
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static void net48xx_error_led_set(struct led_classdev *led_cdev,
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enum led_brightness value)
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{
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if (value)
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scx200_gpio_set_high(NET48XX_ERROR_LED_GPIO);
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else
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scx200_gpio_set_low(NET48XX_ERROR_LED_GPIO);
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}
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static struct led_classdev net48xx_error_led = {
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.name = "net48xx:error",
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.brightness_set = net48xx_error_led_set,
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};
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#ifdef CONFIG_PM
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static int net48xx_led_suspend(struct platform_device *dev,
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pm_message_t state)
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{
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led_classdev_suspend(&net48xx_error_led);
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return 0;
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}
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static int net48xx_led_resume(struct platform_device *dev)
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{
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led_classdev_resume(&net48xx_error_led);
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return 0;
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}
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#else
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#define net48xx_led_suspend NULL
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#define net48xx_led_resume NULL
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#endif
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static int net48xx_led_probe(struct platform_device *pdev)
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{
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return led_classdev_register(&pdev->dev, &net48xx_error_led);
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}
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static int net48xx_led_remove(struct platform_device *pdev)
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{
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led_classdev_unregister(&net48xx_error_led);
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return 0;
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}
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static struct platform_driver net48xx_led_driver = {
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.driver.owner = THIS_MODULE,
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.probe = net48xx_led_probe,
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.remove = net48xx_led_remove,
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.suspend = net48xx_led_suspend,
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.resume = net48xx_led_resume,
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.driver = {
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.name = "net48xx-led",
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},
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};
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static int __init net48xx_led_init(void)
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{
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int ret;
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if (!scx200_gpio_present()) {
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ret = -ENODEV;
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goto out;
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}
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ret = platform_driver_register(&net48xx_led_driver);
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if (ret < 0)
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goto out;
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pdev = platform_device_register_simple("net48xx-led", -1, NULL, 0);
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if (IS_ERR(pdev)) {
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ret = PTR_ERR(pdev);
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platform_driver_unregister(&net48xx_led_driver);
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goto out;
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}
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out:
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return ret;
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}
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static void __exit net48xx_led_exit(void)
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{
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platform_device_unregister(pdev);
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platform_driver_unregister(&net48xx_led_driver);
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}
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module_init(net48xx_led_init);
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module_exit(net48xx_led_exit);
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MODULE_AUTHOR("Chris Boot <bootc@bootc.net>");
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MODULE_DESCRIPTION("Soekris net48xx LED driver");
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MODULE_LICENSE("GPL");
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