From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751201AbWGHJ3k (ORCPT ); Sat, 8 Jul 2006 05:29:40 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751272AbWGHJ3k (ORCPT ); Sat, 8 Jul 2006 05:29:40 -0400 Received: from baldrick.bootc.net ([83.142.228.48]:13240 "EHLO baldrick.fusednetworks.co.uk") by vger.kernel.org with ESMTP id S1751201AbWGHJ3j (ORCPT ); Sat, 8 Jul 2006 05:29:39 -0400 Message-ID: <44AF7B00.9060108@bootc.net> Date: Sat, 08 Jul 2006 10:29:36 +0100 From: Chris Boot User-Agent: Thunderbird 1.5.0.4 (X11/20060615) MIME-Version: 1.0 To: kernel list Cc: soekris-tech@lists.soekris.com Subject: [RFC][PATCH] LED Class support for Soekris net48xx Content-Type: multipart/mixed; boundary="------------000903050209030401080506" Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org This is a multi-part message in MIME format. --------------000903050209030401080506 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Hi all, After many years using Linux and hanging about on LKML without having done much actual kernel hacking, I've decided to have a go! The module below adds 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. The patch is attached because Thunderbird kills tabs. -- Chris Boot bootc@bootc.net http://www.bootc.net/ --------------000903050209030401080506 Content-Type: text/x-patch; name="leds-net48xx.patch" Content-Transfer-Encoding: 7bit Content-Disposition: inline; filename="leds-net48xx.patch" diff --git a/MAINTAINERS b/MAINTAINERS index 196a31c..c55f690 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -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 diff --git a/drivers/leds/Kconfig b/drivers/leds/Kconfig index 9650998..9c39b98 100644 --- a/drivers/leds/Kconfig +++ b/drivers/leds/Kconfig @@ -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 diff --git a/drivers/leds/Makefile b/drivers/leds/Makefile index 88d3b6e..6aa2aed 100644 --- a/drivers/leds/Makefile +++ b/drivers/leds/Makefile @@ -12,6 +12,7 @@ obj-$(CONFIG_LEDS_IXP4XX) += leds-ixp4x obj-$(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 diff --git a/drivers/leds/leds-net48xx.c b/drivers/leds/leds-net48xx.c new file mode 100644 index 0000000..157b561 --- /dev/null +++ b/drivers/leds/leds-net48xx.c @@ -0,0 +1,116 @@ +/* + * LEDs driver for Soekris net48xx + * + * Copyright (C) 2006 Chris Boot + * + * 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 +#include +#include +#include +#include +#include +#include + +#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) +{ + return led_classdev_suspend(&net48xx_error_led); +} + +static int net48xx_led_resume(struct platform_device *dev) +{ + return led_classdev_resume(&net48xx_error_led); +} +#else +#define net48xx_led_suspend NULL +#define net48xx_led_resume NULL +#endif + +static int net48xx_led_probe(struct platform_device *pdev) +{ + if (!scx200_gpio_present()) + return ENODEV; + + 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 = { + .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 "); +MODULE_DESCRIPTION("Soekris net48xx LED driver"); +MODULE_LICENSE("GPL"); + --------------000903050209030401080506--