linux/drivers/video/backlight/mp3309c.c

// SPDX-License-Identifier: GPL-2.0-or-later
/*
 * Driver for MPS MP3309C White LED driver with I2C interface
 *
 * This driver support both analog (by I2C commands) and PWM dimming control
 * modes.
 *
 * Copyright (C) 2023 ASEM Srl
 * Author: Flavio Suligoi <[email protected]>
 *
 * Based on pwm_bl.c
 */

#include <linux/backlight.h>
#include <linux/delay.h>
#include <linux/gpio/consumer.h>
#include <linux/i2c.h>
#include <linux/mod_devicetable.h>
#include <linux/property.h>
#include <linux/pwm.h>
#include <linux/regmap.h>

#define REG_I2C_0 …
#define REG_I2C_1 …

#define REG_I2C_0_EN …
#define REG_I2C_0_D0 …
#define REG_I2C_0_D1 …
#define REG_I2C_0_D2 …
#define REG_I2C_0_D3 …
#define REG_I2C_0_D4 …
#define REG_I2C_0_RSRV1 …
#define REG_I2C_0_RSRV2 …

#define REG_I2C_1_RSRV1 …
#define REG_I2C_1_DIMS …
#define REG_I2C_1_SYNC …
#define REG_I2C_1_OVP0 …
#define REG_I2C_1_OVP1 …
#define REG_I2C_1_VOS …
#define REG_I2C_1_LEDO …
#define REG_I2C_1_OTP …

#define ANALOG_I2C_NUM_LEVELS …
#define ANALOG_I2C_REG_MASK …

#define MP3309C_PWM_DEFAULT_NUM_LEVELS …

enum mp3309c_status_value { … };

enum mp3309c_dimming_mode_value { … };

struct mp3309c_platform_data { … };

struct mp3309c_chip { … };

static const struct regmap_config mp3309c_regmap = …;

static int mp3309c_enable_device(struct mp3309c_chip *chip)
{ … }

static int mp3309c_bl_update_status(struct backlight_device *bl)
{ … }

static const struct backlight_ops mp3309c_bl_ops = …;

static int mp3309c_parse_fwnode(struct mp3309c_chip *chip,
				struct mp3309c_platform_data *pdata)
{ … }

static int mp3309c_probe(struct i2c_client *client)
{ … }

static void mp3309c_remove(struct i2c_client *client)
{ … }

static const struct of_device_id mp3309c_match_table[] = …;
MODULE_DEVICE_TABLE(of, mp3309c_match_table);

static const struct i2c_device_id mp3309c_id[] = …;
MODULE_DEVICE_TABLE(i2c, mp3309c_id);

static struct i2c_driver mp3309c_i2c_driver = …;

module_i2c_driver(…) …;

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