linux/drivers/video/backlight/pcf50633-backlight.c

// SPDX-License-Identifier: GPL-2.0-or-later
/*
 *  Copyright (C) 2009-2010, Lars-Peter Clausen <[email protected]>
 *      PCF50633 backlight device driver
 */

#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/platform_device.h>

#include <linux/backlight.h>

#include <linux/mfd/pcf50633/core.h>
#include <linux/mfd/pcf50633/backlight.h>

struct pcf50633_bl { … };

/*
 * pcf50633_bl_set_brightness_limit
 *
 * Update the brightness limit for the pc50633 backlight. The actual brightness
 * will not go above the limit. This is useful to limit power drain for example
 * on low battery.
 *
 * @dev: Pointer to a pcf50633 device
 * @limit: The brightness limit. Valid values are 0-63
 */
int pcf50633_bl_set_brightness_limit(struct pcf50633 *pcf, unsigned int limit)
{ … }

static int pcf50633_bl_update_status(struct backlight_device *bl)
{ … }

static int pcf50633_bl_get_brightness(struct backlight_device *bl)
{ … }

static const struct backlight_ops pcf50633_bl_ops = …;

static int pcf50633_bl_probe(struct platform_device *pdev)
{ … }

static struct platform_driver pcf50633_bl_driver = …;

module_platform_driver(…) …;

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