Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1760602AbYBEUve (ORCPT ); Tue, 5 Feb 2008 15:51:34 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1760839AbYBEUvK (ORCPT ); Tue, 5 Feb 2008 15:51:10 -0500 Received: from smtp1.stealer.net ([88.198.224.204]:37007 "EHLO smtp1.stealer.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1760813AbYBEUvJ (ORCPT ); Tue, 5 Feb 2008 15:51:09 -0500 X-Greylist: delayed 1243 seconds by postgrey-1.27 at vger.kernel.org; Tue, 05 Feb 2008 15:51:08 EST From: Sven Wegener To: rpurdie@rpsys.net Cc: kris@krisk.org, linux-kernel@vger.kernel.org Subject: [PATCH] leds: Add support for power LED on WRAP systems Date: Tue, 5 Feb 2008 21:51:02 +0100 Message-Id: <1202244662-5556-1-git-send-email-sven.wegener@stealer.net> X-Mailer: git-send-email 1.5.4 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 3366 Lines: 113 WRAP systems have an additional LED. The power LED is normally lit after boot and doesn't serve any other purpose besides showing that the system is powered on. Nevertheless, its state is controllable and we can attach a trigger to it. Cc: Kristian Kielhofner Signed-off-by: Sven Wegener --- drivers/leds/leds-wrap.c | 41 +++++++++++++++++++++++++++++++++++------ 1 files changed, 35 insertions(+), 6 deletions(-) diff --git a/drivers/leds/leds-wrap.c b/drivers/leds/leds-wrap.c index 27fb2d8..0ccb483 100644 --- a/drivers/leds/leds-wrap.c +++ b/drivers/leds/leds-wrap.c @@ -19,11 +19,21 @@ #include #define DRVNAME "wrap-led" +#define WRAP_POWER_LED_GPIO 2 #define WRAP_ERROR_LED_GPIO 3 #define WRAP_EXTRA_LED_GPIO 18 static struct platform_device *pdev; +static void wrap_power_led_set(struct led_classdev *led_cdev, + enum led_brightness value) +{ + if (value) + scx200_gpio_set_low(WRAP_POWER_LED_GPIO); + else + scx200_gpio_set_high(WRAP_POWER_LED_GPIO); +} + static void wrap_error_led_set(struct led_classdev *led_cdev, enum led_brightness value) { @@ -42,6 +52,11 @@ static void wrap_extra_led_set(struct led_classdev *led_cdev, scx200_gpio_set_high(WRAP_EXTRA_LED_GPIO); } +static struct led_classdev wrap_power_led = { + .name = "wrap:power", + .brightness_set = wrap_power_led_set, +}; + static struct led_classdev wrap_error_led = { .name = "wrap:error", .brightness_set = wrap_error_led_set, @@ -56,6 +71,7 @@ static struct led_classdev wrap_extra_led = { static int wrap_led_suspend(struct platform_device *dev, pm_message_t state) { + led_classdev_suspend(&wrap_power_led); led_classdev_suspend(&wrap_error_led); led_classdev_suspend(&wrap_extra_led); return 0; @@ -63,6 +79,7 @@ static int wrap_led_suspend(struct platform_device *dev, static int wrap_led_resume(struct platform_device *dev) { + led_classdev_resume(&wrap_power_led); led_classdev_resume(&wrap_error_led); led_classdev_resume(&wrap_extra_led); return 0; @@ -76,17 +93,30 @@ static int wrap_led_probe(struct platform_device *pdev) { int ret; + ret = led_classdev_register(&pdev->dev, &wrap_power_led); + if (ret < 0) + goto out; ret = led_classdev_register(&pdev->dev, &wrap_error_led); - if (ret == 0) { - ret = led_classdev_register(&pdev->dev, &wrap_extra_led); - if (ret < 0) - led_classdev_unregister(&wrap_error_led); - } + if (ret < 0) + goto outpower; + ret = led_classdev_register(&pdev->dev, &wrap_extra_led); + if (ret < 0) + goto outerror; + + return 0; + +outerror: + led_classdev_unregister(&wrap_error_led); +outpower: + led_classdev_unregister(&wrap_power_led); +out: + return ret; } static int wrap_led_remove(struct platform_device *pdev) { + led_classdev_unregister(&wrap_power_led); led_classdev_unregister(&wrap_error_led); led_classdev_unregister(&wrap_extra_led); return 0; @@ -139,4 +169,3 @@ module_exit(wrap_led_exit); MODULE_AUTHOR("Kristian Kielhofner "); MODULE_DESCRIPTION("PCEngines WRAP LED driver"); MODULE_LICENSE("GPL"); - -- 1.5.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/