linux/drivers/leds/leds-lp3952.c

// SPDX-License-Identifier: GPL-2.0-only
/*
 *	LED driver for TI lp3952 controller
 *
 *	Copyright (C) 2016, DAQRI, LLC.
 *	Author: Tony Makkiel <[email protected]>
 */

#include <linux/delay.h>
#include <linux/gpio/consumer.h>
#include <linux/i2c.h>
#include <linux/io.h>
#include <linux/kernel.h>
#include <linux/leds.h>
#include <linux/leds-lp3952.h>
#include <linux/module.h>
#include <linux/notifier.h>
#include <linux/platform_device.h>
#include <linux/pm.h>
#include <linux/reboot.h>
#include <linux/regmap.h>

static int lp3952_register_write(struct i2c_client *client, u8 reg, u8 val)
{ … }

static void lp3952_on_off(struct lp3952_led_array *priv,
			  enum lp3952_leds led_id, bool on)
{ … }

/*
 * Using Imax to control brightness. There are 4 possible
 * setting 25, 50, 75 and 100 % of Imax. Possible values are
 * values 0-4. 0 meaning turn off.
 */
static int lp3952_set_brightness(struct led_classdev *cdev,
				 enum led_brightness value)
{ … }

static int lp3952_get_label(struct device *dev, const char *label, char *dest)
{ … }

static int lp3952_register_led_classdev(struct lp3952_led_array *priv)
{ … }

static int lp3952_set_pattern_gen_cmd(struct lp3952_led_array *priv,
				      u8 cmd_index, u8 r, u8 g, u8 b,
				      enum lp3952_tt tt, enum lp3952_cet cet)
{ … }

static int lp3952_configure(struct lp3952_led_array *priv)
{ … }

static const struct regmap_config lp3952_regmap = …;

static void gpio_set_low_action(void *data)
{ … }

static int lp3952_probe(struct i2c_client *client)
{ … }

static const struct i2c_device_id lp3952_id[] = …;
MODULE_DEVICE_TABLE(i2c, lp3952_id);

static struct i2c_driver lp3952_i2c_driver = …;

module_i2c_driver(…) …;

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