linux/drivers/platform/x86/dell/dell-wmi-led.c

/*
 * Copyright (C) 2010 Dell Inc.
 * Louis Davis <[email protected]>
 * Jim Dailey <[email protected]>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as
 * published by the Free Software Foundation.
 *
 */

#include <linux/acpi.h>
#include <linux/leds.h>
#include <linux/slab.h>
#include <linux/module.h>

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

#define DELL_LED_BIOS_GUID …
MODULE_ALIAS(…) …;

/* Error Result Codes: */
#define INVALID_DEVICE_ID …
#define INVALID_PARAMETER …
#define INVALID_BUFFER …
#define INTERFACE_ERROR …
#define UNSUPPORTED_COMMAND …
#define UNSPECIFIED_ERROR …

/* Device ID */
#define DEVICE_ID_PANEL_BACK …

/* LED Commands */
#define CMD_LED_ON …
#define CMD_LED_OFF …
#define CMD_LED_BLINK …

struct bios_args { … };

static int dell_led_perform_fn(u8 length, u8 result_code, u8 device_id,
			       u8 command, u8 on_time, u8 off_time)
{ … }

static int led_on(void)
{ … }

static int led_off(void)
{ … }

static int led_blink(unsigned char on_eighths, unsigned char off_eighths)
{ … }

static void dell_led_set(struct led_classdev *led_cdev,
			 enum led_brightness value)
{ … }

static int dell_led_blink(struct led_classdev *led_cdev,
			  unsigned long *delay_on, unsigned long *delay_off)
{ … }

static struct led_classdev dell_led = …;

static int __init dell_led_init(void)
{ … }

static void __exit dell_led_exit(void)
{ … }

module_init(…) …;
module_exit(dell_led_exit);