diff options
Diffstat (limited to 'drivers/leds')
| -rw-r--r-- | drivers/leds/Kconfig | 16 | ||||
| -rw-r--r-- | drivers/leds/Makefile | 2 | ||||
| -rw-r--r-- | drivers/leds/led-class.c | 1 | ||||
| -rw-r--r-- | drivers/leds/led-core.c | 2 | ||||
| -rw-r--r-- | drivers/leds/led-triggers.c | 3 | ||||
| -rw-r--r-- | drivers/leds/leds-corgi.c | 1 | ||||
| -rw-r--r-- | drivers/leds/leds-ixp4xx-gpio.c | 1 | ||||
| -rw-r--r-- | drivers/leds/leds-locomo.c | 1 | ||||
| -rw-r--r-- | drivers/leds/leds-net48xx.c | 115 | ||||
| -rw-r--r-- | drivers/leds/leds-s3c24xx.c | 1 | ||||
| -rw-r--r-- | drivers/leds/leds-spitz.c | 1 | ||||
| -rw-r--r-- | drivers/leds/leds-tosa.c | 1 | ||||
| -rw-r--r-- | drivers/leds/ledtrig-heartbeat.c | 118 | ||||
| -rw-r--r-- | drivers/leds/ledtrig-timer.c | 1 |
14 files changed, 253 insertions, 11 deletions
diff --git a/drivers/leds/Kconfig b/drivers/leds/Kconfig index f573d5af0b1f..9c39b98d5a5b 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 @@ -93,5 +100,14 @@ config LEDS_TRIGGER_IDE_DISK This allows LEDs to be controlled by IDE disk activity. If unsure, say Y. +config LEDS_TRIGGER_HEARTBEAT + tristate "LED Heartbeat Trigger" + depends LEDS_TRIGGERS + help + This allows LEDs to be controlled by a CPU load average. + The flash frequency is a hyperbolic function of the 1-minute + load average. + If unsure, say Y. + endmenu diff --git a/drivers/leds/Makefile b/drivers/leds/Makefile index dcea1001faa4..6aa2aed7539d 100644 --- a/drivers/leds/Makefile +++ b/drivers/leds/Makefile @@ -12,7 +12,9 @@ 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 obj-$(CONFIG_LEDS_TRIGGER_IDE_DISK) += ledtrig-ide-disk.o +obj-$(CONFIG_LEDS_TRIGGER_HEARTBEAT) += ledtrig-heartbeat.o diff --git a/drivers/leds/led-class.c b/drivers/leds/led-class.c index c75d0ef1609c..d424b4452028 100644 --- a/drivers/leds/led-class.c +++ b/drivers/leds/led-class.c @@ -9,7 +9,6 @@ * published by the Free Software Foundation. */ -#include <linux/config.h> #include <linux/module.h> #include <linux/kernel.h> #include <linux/init.h> diff --git a/drivers/leds/led-core.c b/drivers/leds/led-core.c index fe6541326c71..9b015f9af351 100644 --- a/drivers/leds/led-core.c +++ b/drivers/leds/led-core.c @@ -18,7 +18,7 @@ #include <linux/leds.h> #include "leds.h" -rwlock_t leds_list_lock = RW_LOCK_UNLOCKED; +DEFINE_RWLOCK(leds_list_lock); LIST_HEAD(leds_list); EXPORT_SYMBOL_GPL(leds_list); diff --git a/drivers/leds/led-triggers.c b/drivers/leds/led-triggers.c index 5e2cd8be1191..47f0ff196328 100644 --- a/drivers/leds/led-triggers.c +++ b/drivers/leds/led-triggers.c @@ -11,7 +11,6 @@ * */ -#include <linux/config.h> #include <linux/module.h> #include <linux/kernel.h> #include <linux/init.h> @@ -26,7 +25,7 @@ /* * Nests outside led_cdev->trigger_lock */ -static rwlock_t triggers_list_lock = RW_LOCK_UNLOCKED; +static DEFINE_RWLOCK(triggers_list_lock); static LIST_HEAD(trigger_list); ssize_t led_trigger_store(struct class_device *dev, const char *buf, diff --git a/drivers/leds/leds-corgi.c b/drivers/leds/leds-corgi.c index bb7d84df0121..cf1dcd719a28 100644 --- a/drivers/leds/leds-corgi.c +++ b/drivers/leds/leds-corgi.c @@ -11,7 +11,6 @@ * */ -#include <linux/config.h> #include <linux/kernel.h> #include <linux/init.h> #include <linux/platform_device.h> diff --git a/drivers/leds/leds-ixp4xx-gpio.c b/drivers/leds/leds-ixp4xx-gpio.c index 30ced150e4cf..7dcf0b92c460 100644 --- a/drivers/leds/leds-ixp4xx-gpio.c +++ b/drivers/leds/leds-ixp4xx-gpio.c @@ -31,7 +31,6 @@ * */ -#include <linux/config.h> #include <linux/kernel.h> #include <linux/init.h> #include <linux/platform_device.h> diff --git a/drivers/leds/leds-locomo.c b/drivers/leds/leds-locomo.c index 8419e29b71f4..3b87951aa555 100644 --- a/drivers/leds/leds-locomo.c +++ b/drivers/leds/leds-locomo.c @@ -8,7 +8,6 @@ * published by the Free Software Foundation. */ -#include <linux/config.h> #include <linux/kernel.h> #include <linux/init.h> #include <linux/device.h> diff --git a/drivers/leds/leds-net48xx.c b/drivers/leds/leds-net48xx.c new file mode 100644 index 000000000000..45ba3d45bcb8 --- /dev/null +++ b/drivers/leds/leds-net48xx.c @@ -0,0 +1,115 @@ +/* + * 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/nsc_gpio.h> +#include <linux/scx200_gpio.h> + +#define DRVNAME "net48xx-led" +#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) +{ + scx200_gpio_ops.gpio_set(NET48XX_ERROR_LED_GPIO, value ? 1 : 0); +} + +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 = { + .probe = net48xx_led_probe, + .remove = net48xx_led_remove, + .suspend = net48xx_led_suspend, + .resume = net48xx_led_resume, + .driver = { + .name = DRVNAME, + .owner = THIS_MODULE, + }, +}; + +static int __init net48xx_led_init(void) +{ + int ret; + + /* small hack, but scx200_gpio doesn't set .dev if the probe fails */ + if (!scx200_gpio_ops.dev) { + ret = -ENODEV; + goto out; + } + + ret = platform_driver_register(&net48xx_led_driver); + if (ret < 0) + goto out; + + pdev = platform_device_register_simple(DRVNAME, -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"); + diff --git a/drivers/leds/leds-s3c24xx.c b/drivers/leds/leds-s3c24xx.c index 650cf72dc675..fb1edc1c9edb 100644 --- a/drivers/leds/leds-s3c24xx.c +++ b/drivers/leds/leds-s3c24xx.c @@ -11,7 +11,6 @@ * published by the Free Software Foundation. */ -#include <linux/config.h> #include <linux/kernel.h> #include <linux/init.h> #include <linux/platform_device.h> diff --git a/drivers/leds/leds-spitz.c b/drivers/leds/leds-spitz.c index 65bbef4a5e09..126d09cc96ec 100644 --- a/drivers/leds/leds-spitz.c +++ b/drivers/leds/leds-spitz.c @@ -11,7 +11,6 @@ * */ -#include <linux/config.h> #include <linux/kernel.h> #include <linux/init.h> #include <linux/platform_device.h> diff --git a/drivers/leds/leds-tosa.c b/drivers/leds/leds-tosa.c index c9e8cc1ec481..fb2416a38303 100644 --- a/drivers/leds/leds-tosa.c +++ b/drivers/leds/leds-tosa.c @@ -12,7 +12,6 @@ * */ -#include <linux/config.h> #include <linux/kernel.h> #include <linux/init.h> #include <linux/platform_device.h> diff --git a/drivers/leds/ledtrig-heartbeat.c b/drivers/leds/ledtrig-heartbeat.c new file mode 100644 index 000000000000..4bf8cec8b8c1 --- /dev/null +++ b/drivers/leds/ledtrig-heartbeat.c @@ -0,0 +1,118 @@ +/* + * LED Heartbeat Trigger + * + * Copyright (C) 2006 Atsushi Nemoto <anemo@mba.ocn.ne.jp> + * + * Based on Richard Purdie's ledtrig-timer.c and some arch's + * CONFIG_HEARTBEAT code. + * + * 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/module.h> +#include <linux/kernel.h> +#include <linux/init.h> +#include <linux/timer.h> +#include <linux/sched.h> +#include <linux/leds.h> +#include "leds.h" + +struct heartbeat_trig_data { + unsigned int phase; + unsigned int period; + struct timer_list timer; +}; + +static void led_heartbeat_function(unsigned long data) +{ + struct led_classdev *led_cdev = (struct led_classdev *) data; + struct heartbeat_trig_data *heartbeat_data = led_cdev->trigger_data; + unsigned long brightness = LED_OFF; + unsigned long delay = 0; + + /* acts like an actual heart beat -- ie thump-thump-pause... */ + switch (heartbeat_data->phase) { + case 0: + /* + * The hyperbolic function below modifies the + * heartbeat period length in dependency of the + * current (1min) load. It goes through the points + * f(0)=1260, f(1)=860, f(5)=510, f(inf)->300. + */ + heartbeat_data->period = 300 + + (6720 << FSHIFT) / (5 * avenrun[0] + (7 << FSHIFT)); + heartbeat_data->period = + msecs_to_jiffies(heartbeat_data->period); + delay = msecs_to_jiffies(70); + heartbeat_data->phase++; + brightness = LED_FULL; + break; + case 1: + delay = heartbeat_data->period / 4 - msecs_to_jiffies(70); + heartbeat_data->phase++; + break; + case 2: + delay = msecs_to_jiffies(70); + heartbeat_data->phase++; + brightness = LED_FULL; + break; + default: + delay = heartbeat_data->period - heartbeat_data->period / 4 - + msecs_to_jiffies(70); + heartbeat_data->phase = 0; + break; + } + + led_set_brightness(led_cdev, brightness); + mod_timer(&heartbeat_data->timer, jiffies + delay); +} + +static void heartbeat_trig_activate(struct led_classdev *led_cdev) +{ + struct heartbeat_trig_data *heartbeat_data; + + heartbeat_data = kzalloc(sizeof(*heartbeat_data), GFP_KERNEL); + if (!heartbeat_data) + return; + + led_cdev->trigger_data = heartbeat_data; + setup_timer(&heartbeat_data->timer, + led_heartbeat_function, (unsigned long) led_cdev); + heartbeat_data->phase = 0; + led_heartbeat_function(heartbeat_data->timer.data); +} + +static void heartbeat_trig_deactivate(struct led_classdev *led_cdev) +{ + struct heartbeat_trig_data *heartbeat_data = led_cdev->trigger_data; + + if (heartbeat_data) { + del_timer_sync(&heartbeat_data->timer); + kfree(heartbeat_data); + } +} + +static struct led_trigger heartbeat_led_trigger = { + .name = "heartbeat", + .activate = heartbeat_trig_activate, + .deactivate = heartbeat_trig_deactivate, +}; + +static int __init heartbeat_trig_init(void) +{ + return led_trigger_register(&heartbeat_led_trigger); +} + +static void __exit heartbeat_trig_exit(void) +{ + led_trigger_unregister(&heartbeat_led_trigger); +} + +module_init(heartbeat_trig_init); +module_exit(heartbeat_trig_exit); + +MODULE_AUTHOR("Atsushi Nemoto <anemo@mba.ocn.ne.jp>"); +MODULE_DESCRIPTION("Heartbeat LED trigger"); +MODULE_LICENSE("GPL"); diff --git a/drivers/leds/ledtrig-timer.c b/drivers/leds/ledtrig-timer.c index fbf141ef46ec..179c2876b541 100644 --- a/drivers/leds/ledtrig-timer.c +++ b/drivers/leds/ledtrig-timer.c @@ -11,7 +11,6 @@ * */ -#include <linux/config.h> #include <linux/module.h> #include <linux/kernel.h> #include <linux/init.h> |
