linux/drivers/leds/uleds.c

// SPDX-License-Identifier: GPL-2.0-or-later
/*
 * Userspace driver for the LED subsystem
 *
 * Copyright (C) 2016 David Lechner <[email protected]>
 *
 * Based on uinput.c: Aristeu Sergio Rozanski Filho <[email protected]>
 */
#include <linux/fs.h>
#include <linux/init.h>
#include <linux/leds.h>
#include <linux/miscdevice.h>
#include <linux/module.h>
#include <linux/poll.h>
#include <linux/sched.h>
#include <linux/slab.h>

#include <uapi/linux/uleds.h>

#define ULEDS_NAME …

enum uleds_state { … };

struct uleds_device { … };

static struct miscdevice uleds_misc;

static void uleds_brightness_set(struct led_classdev *led_cdev,
				 enum led_brightness brightness)
{ … }

static int uleds_open(struct inode *inode, struct file *file)
{ … }

static ssize_t uleds_write(struct file *file, const char __user *buffer,
			   size_t count, loff_t *ppos)
{ … }

static ssize_t uleds_read(struct file *file, char __user *buffer, size_t count,
			  loff_t *ppos)
{ … }

static __poll_t uleds_poll(struct file *file, poll_table *wait)
{ … }

static int uleds_release(struct inode *inode, struct file *file)
{ … }

static const struct file_operations uleds_fops = …;

static struct miscdevice uleds_misc = …;

module_misc_device(…);

MODULE_AUTHOR(…) …;
MODULE_DESCRIPTION(…) …;
MODULE_LICENSE(…) …;