linux/drivers/leds/leds-pca995x.c

// SPDX-License-Identifier: GPL-2.0-only
/*
 * LED driver for PCA995x I2C LED drivers
 *
 * Copyright 2011 bct electronic GmbH
 * Copyright 2013 Qtechnology/AS
 * Copyright 2022 NXP
 * Copyright 2023 Marek Vasut
 */

#include <linux/i2c.h>
#include <linux/leds.h>
#include <linux/module.h>
#include <linux/mod_devicetable.h>
#include <linux/property.h>
#include <linux/regmap.h>

/* Register definition */
#define PCA995X_MODE1 …
#define PCA995X_MODE2 …
#define PCA995X_LEDOUT0 …
#define PCA9955B_PWM0 …
#define PCA9952_PWM0 …
#define PCA9952_IREFALL …
#define PCA9955B_IREFALL …

/* Auto-increment disabled. Normal mode */
#define PCA995X_MODE1_CFG …

/* LED select registers determine the source that drives LED outputs */
#define PCA995X_LED_OFF …
#define PCA995X_LED_ON …
#define PCA995X_LED_PWM_MODE …
#define PCA995X_LDRX_MASK …
#define PCA995X_LDRX_BITS …

#define PCA995X_MAX_OUTPUTS …
#define PCA995X_OUTPUTS_PER_REG …

#define PCA995X_IREFALL_FULL_CFG …
#define PCA995X_IREFALL_HALF_CFG …

#define PCA995X_TYPE_NON_B …
#define PCA995X_TYPE_B …

#define ldev_to_led(c) …

struct pca995x_led { … };

struct pca995x_chip { … };

static int pca995x_brightness_set(struct led_classdev *led_cdev,
				  enum led_brightness brightness)
{ … }

static const struct regmap_config pca995x_regmap = …;

static int pca995x_probe(struct i2c_client *client)
{ … }

static const struct i2c_device_id pca995x_id[] = …;
MODULE_DEVICE_TABLE(i2c, pca995x_id);

static const struct of_device_id pca995x_of_match[] = …;
MODULE_DEVICE_TABLE(of, pca995x_of_match);

static struct i2c_driver pca995x_driver = …;
module_i2c_driver(…) …;

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