diff options
Diffstat (limited to 'drivers/leds/ledtrig-oneshot.c')
| -rw-r--r-- | drivers/leds/ledtrig-oneshot.c | 204 |
1 files changed, 0 insertions, 204 deletions
diff --git a/drivers/leds/ledtrig-oneshot.c b/drivers/leds/ledtrig-oneshot.c deleted file mode 100644 index 2c029aa5c4f1..000000000000 --- a/drivers/leds/ledtrig-oneshot.c +++ /dev/null @@ -1,204 +0,0 @@ -/* - * One-shot LED Trigger - * - * Copyright 2012, Fabio Baltieri <fabio.baltieri@gmail.com> - * - * Based on ledtrig-timer.c by Richard Purdie <rpurdie@openedhand.com> - * - * 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/device.h> -#include <linux/ctype.h> -#include <linux/slab.h> -#include <linux/leds.h> -#include "leds.h" - -#define DEFAULT_DELAY 100 - -struct oneshot_trig_data { - unsigned int invert; -}; - -static ssize_t led_shot(struct device *dev, - struct device_attribute *attr, const char *buf, size_t size) -{ - struct led_classdev *led_cdev = dev_get_drvdata(dev); - struct oneshot_trig_data *oneshot_data = led_cdev->trigger_data; - - led_blink_set_oneshot(led_cdev, - &led_cdev->blink_delay_on, &led_cdev->blink_delay_off, - oneshot_data->invert); - - /* content is ignored */ - return size; -} -static ssize_t led_invert_show(struct device *dev, - struct device_attribute *attr, char *buf) -{ - struct led_classdev *led_cdev = dev_get_drvdata(dev); - struct oneshot_trig_data *oneshot_data = led_cdev->trigger_data; - - return sprintf(buf, "%u\n", oneshot_data->invert); -} - -static ssize_t led_invert_store(struct device *dev, - struct device_attribute *attr, const char *buf, size_t size) -{ - struct led_classdev *led_cdev = dev_get_drvdata(dev); - struct oneshot_trig_data *oneshot_data = led_cdev->trigger_data; - unsigned long state; - int ret; - - ret = kstrtoul(buf, 0, &state); - if (ret) - return ret; - - oneshot_data->invert = !!state; - - if (oneshot_data->invert) - __led_set_brightness(led_cdev, LED_FULL); - else - __led_set_brightness(led_cdev, LED_OFF); - - return size; -} - -static ssize_t led_delay_on_show(struct device *dev, - struct device_attribute *attr, char *buf) -{ - struct led_classdev *led_cdev = dev_get_drvdata(dev); - - return sprintf(buf, "%lu\n", led_cdev->blink_delay_on); -} - -static ssize_t led_delay_on_store(struct device *dev, - struct device_attribute *attr, const char *buf, size_t size) -{ - struct led_classdev *led_cdev = dev_get_drvdata(dev); - unsigned long state; - int ret; - - ret = kstrtoul(buf, 0, &state); - if (ret) - return ret; - - led_cdev->blink_delay_on = state; - - return size; -} -static ssize_t led_delay_off_show(struct device *dev, - struct device_attribute *attr, char *buf) -{ - struct led_classdev *led_cdev = dev_get_drvdata(dev); - - return sprintf(buf, "%lu\n", led_cdev->blink_delay_off); -} - -static ssize_t led_delay_off_store(struct device *dev, - struct device_attribute *attr, const char *buf, size_t size) -{ - struct led_classdev *led_cdev = dev_get_drvdata(dev); - unsigned long state; - int ret; - - ret = kstrtoul(buf, 0, &state); - if (ret) - return ret; - - led_cdev->blink_delay_off = state; - - return size; -} - -static DEVICE_ATTR(delay_on, 0644, led_delay_on_show, led_delay_on_store); -static DEVICE_ATTR(delay_off, 0644, led_delay_off_show, led_delay_off_store); -static DEVICE_ATTR(invert, 0644, led_invert_show, led_invert_store); -static DEVICE_ATTR(shot, 0200, NULL, led_shot); - -static void oneshot_trig_activate(struct led_classdev *led_cdev) -{ - struct oneshot_trig_data *oneshot_data; - int rc; - - oneshot_data = kzalloc(sizeof(*oneshot_data), GFP_KERNEL); - if (!oneshot_data) - return; - - led_cdev->trigger_data = oneshot_data; - - rc = device_create_file(led_cdev->dev, &dev_attr_delay_on); - if (rc) - goto err_out_trig_data; - rc = device_create_file(led_cdev->dev, &dev_attr_delay_off); - if (rc) - goto err_out_delayon; - rc = device_create_file(led_cdev->dev, &dev_attr_invert); - if (rc) - goto err_out_delayoff; - rc = device_create_file(led_cdev->dev, &dev_attr_shot); - if (rc) - goto err_out_invert; - - led_cdev->blink_delay_on = DEFAULT_DELAY; - led_cdev->blink_delay_off = DEFAULT_DELAY; - - led_cdev->activated = true; - - return; - -err_out_invert: - device_remove_file(led_cdev->dev, &dev_attr_invert); -err_out_delayoff: - device_remove_file(led_cdev->dev, &dev_attr_delay_off); -err_out_delayon: - device_remove_file(led_cdev->dev, &dev_attr_delay_on); -err_out_trig_data: - kfree(led_cdev->trigger_data); -} - -static void oneshot_trig_deactivate(struct led_classdev *led_cdev) -{ - struct oneshot_trig_data *oneshot_data = led_cdev->trigger_data; - - if (led_cdev->activated) { - device_remove_file(led_cdev->dev, &dev_attr_delay_on); - device_remove_file(led_cdev->dev, &dev_attr_delay_off); - device_remove_file(led_cdev->dev, &dev_attr_invert); - device_remove_file(led_cdev->dev, &dev_attr_shot); - kfree(oneshot_data); - led_cdev->activated = false; - } - - /* Stop blinking */ - led_set_brightness(led_cdev, LED_OFF); -} - -static struct led_trigger oneshot_led_trigger = { - .name = "oneshot", - .activate = oneshot_trig_activate, - .deactivate = oneshot_trig_deactivate, -}; - -static int __init oneshot_trig_init(void) -{ - return led_trigger_register(&oneshot_led_trigger); -} - -static void __exit oneshot_trig_exit(void) -{ - led_trigger_unregister(&oneshot_led_trigger); -} - -module_init(oneshot_trig_init); -module_exit(oneshot_trig_exit); - -MODULE_AUTHOR("Fabio Baltieri <fabio.baltieri@gmail.com>"); -MODULE_DESCRIPTION("One-shot LED trigger"); -MODULE_LICENSE("GPL"); |