linux/drivers/video/backlight/as3711_bl.c

// SPDX-License-Identifier: GPL-2.0
/*
 * AS3711 PMIC backlight driver, using DCDC Step Up Converters
 *
 * Copyright (C) 2012 Renesas Electronics Corporation
 * Author: Guennadi Liakhovetski, <[email protected]>
 */

#include <linux/backlight.h>
#include <linux/delay.h>
#include <linux/device.h>
#include <linux/err.h>
#include <linux/fb.h>
#include <linux/kernel.h>
#include <linux/mfd/as3711.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/regmap.h>
#include <linux/slab.h>

enum as3711_bl_type { … };

struct as3711_bl_data { … };

struct as3711_bl_supply { … };

static struct as3711_bl_supply *to_supply(struct as3711_bl_data *su)
{ … }

static int as3711_set_brightness_auto_i(struct as3711_bl_data *data,
					unsigned int brightness)
{ … }

static int as3711_set_brightness_v(struct as3711 *as3711,
				   unsigned int brightness,
				   unsigned int reg)
{ … }

static int as3711_bl_su2_reset(struct as3711_bl_supply *supply)
{ … }

/*
 * Someone with less fragile or less expensive hardware could try to simplify
 * the brightness adjustment procedure.
 */
static int as3711_bl_update_status(struct backlight_device *bl)
{ … }

static int as3711_bl_get_brightness(struct backlight_device *bl)
{ … }

static const struct backlight_ops as3711_bl_ops = …;

static int as3711_bl_init_su2(struct as3711_bl_supply *supply)
{ … }

static int as3711_bl_register(struct platform_device *pdev,
			      unsigned int max_brightness, struct as3711_bl_data *su)
{ … }

static int as3711_backlight_parse_dt(struct device *dev)
{ … }

static int as3711_backlight_probe(struct platform_device *pdev)
{ … }

static struct platform_driver as3711_backlight_driver = …;

module_platform_driver(…) …;

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