linux/drivers/leds/leds-bd2802.c

// SPDX-License-Identifier: GPL-2.0-only
/*
 * leds-bd2802.c - RGB LED Driver
 *
 * Copyright (C) 2009 Samsung Electronics
 * Kim Kyuwon <[email protected]>
 *
 * Datasheet: http://www.rohm.com/products/databook/driver/pdf/bd2802gu-e.pdf
 */

#include <linux/module.h>
#include <linux/i2c.h>
#include <linux/gpio/consumer.h>
#include <linux/delay.h>
#include <linux/leds.h>
#include <linux/leds-bd2802.h>
#include <linux/slab.h>
#include <linux/pm.h>

#define LED_CTL(rgb2en, rgb1en) …

#define BD2802_LED_OFFSET …
#define BD2802_COLOR_OFFSET …

#define BD2802_REG_CLKSETUP …
#define BD2802_REG_CONTROL …
#define BD2802_REG_HOURSETUP …
#define BD2802_REG_CURRENT1SETUP …
#define BD2802_REG_CURRENT2SETUP …
#define BD2802_REG_WAVEPATTERN …

#define BD2802_CURRENT_032 …
#define BD2802_CURRENT_000 …

#define BD2802_PATTERN_FULL …
#define BD2802_PATTERN_HALF …

enum led_ids { … };

enum led_colors { … };

enum led_bits { … };

/*
 * State '0' : 'off'
 * State '1' : 'blink'
 * State '2' : 'on'.
 */
struct led_state { … };

struct bd2802_led { … };


/*--------------------------------------------------------------*/
/*	BD2802GU helper functions					*/
/*--------------------------------------------------------------*/

static inline int bd2802_is_rgb_off(struct bd2802_led *led, enum led_ids id,
							enum led_colors color)
{ … }

static inline int bd2802_is_led_off(struct bd2802_led *led, enum led_ids id)
{ … }

static inline int bd2802_is_all_off(struct bd2802_led *led)
{ … }

static inline u8 bd2802_get_base_offset(enum led_ids id, enum led_colors color)
{ … }

static inline u8 bd2802_get_reg_addr(enum led_ids id, enum led_colors color,
								u8 reg_offset)
{ … }


/*--------------------------------------------------------------*/
/*	BD2802GU core functions					*/
/*--------------------------------------------------------------*/

static int bd2802_write_byte(struct i2c_client *client, u8 reg, u8 val)
{ … }

static void bd2802_update_state(struct bd2802_led *led, enum led_ids id,
				enum led_colors color, enum led_bits led_bit)
{ … }

static void bd2802_configure(struct bd2802_led *led)
{ … }

static void bd2802_reset_cancel(struct bd2802_led *led)
{ … }

static void bd2802_enable(struct bd2802_led *led, enum led_ids id)
{ … }

static void bd2802_set_on(struct bd2802_led *led, enum led_ids id,
							enum led_colors color)
{ … }

static void bd2802_set_blink(struct bd2802_led *led, enum led_ids id,
							enum led_colors color)
{ … }

static void bd2802_turn_on(struct bd2802_led *led, enum led_ids id,
				enum led_colors color, enum led_bits led_bit)
{ … }

static void bd2802_turn_off(struct bd2802_led *led, enum led_ids id,
							enum led_colors color)
{ … }

#define BD2802_SET_REGISTER(reg_addr, reg_name) …

BD2802_SET_REGISTER(0x00, "0x00");
BD2802_SET_REGISTER(0x01, "0x01");
BD2802_SET_REGISTER(0x02, "0x02");
BD2802_SET_REGISTER(0x03, "0x03");
BD2802_SET_REGISTER(0x04, "0x04");
BD2802_SET_REGISTER(0x05, "0x05");
BD2802_SET_REGISTER(0x06, "0x06");
BD2802_SET_REGISTER(0x07, "0x07");
BD2802_SET_REGISTER(0x08, "0x08");
BD2802_SET_REGISTER(0x09, "0x09");
BD2802_SET_REGISTER(0x0a, "0x0a");
BD2802_SET_REGISTER(0x0b, "0x0b");
BD2802_SET_REGISTER(0x0c, "0x0c");
BD2802_SET_REGISTER(0x0d, "0x0d");
BD2802_SET_REGISTER(0x0e, "0x0e");
BD2802_SET_REGISTER(0x0f, "0x0f");
BD2802_SET_REGISTER(0x10, "0x10");
BD2802_SET_REGISTER(0x11, "0x11");
BD2802_SET_REGISTER(0x12, "0x12");
BD2802_SET_REGISTER(0x13, "0x13");
BD2802_SET_REGISTER(0x14, "0x14");
BD2802_SET_REGISTER(0x15, "0x15");

static struct device_attribute *bd2802_addr_attributes[] = …;

static void bd2802_enable_adv_conf(struct bd2802_led *led)
{ … }

static void bd2802_disable_adv_conf(struct bd2802_led *led)
{ … }

static ssize_t bd2802_show_adv_conf(struct device *dev,
	struct device_attribute *attr, char *buf)
{ … }

static ssize_t bd2802_store_adv_conf(struct device *dev,
	struct device_attribute *attr, const char *buf, size_t count)
{ … }

static struct device_attribute bd2802_adv_conf_attr = …;

#define BD2802_CONTROL_ATTR(attr_name, name_str) …

BD2802_CONTROL_ATTR(wave_pattern, "wave_pattern");
BD2802_CONTROL_ATTR(rgb_current, "rgb_current");

static struct device_attribute *bd2802_attributes[] = …;

#define BD2802_CONTROL_RGBS(name, id, clr) …

BD2802_CONTROL_RGBS(led1r, LED1, RED);
BD2802_CONTROL_RGBS(led1g, LED1, GREEN);
BD2802_CONTROL_RGBS(led1b, LED1, BLUE);
BD2802_CONTROL_RGBS(led2r, LED2, RED);
BD2802_CONTROL_RGBS(led2g, LED2, GREEN);
BD2802_CONTROL_RGBS(led2b, LED2, BLUE);

static int bd2802_register_led_classdev(struct bd2802_led *led)
{ … }

static void bd2802_unregister_led_classdev(struct bd2802_led *led)
{ … }

static int bd2802_probe(struct i2c_client *client)
{ … }

static void bd2802_remove(struct i2c_client *client)
{ … }

#ifdef CONFIG_PM_SLEEP
static void bd2802_restore_state(struct bd2802_led *led)
{ … }

static int bd2802_suspend(struct device *dev)
{ … }

static int bd2802_resume(struct device *dev)
{ … }
#endif

static SIMPLE_DEV_PM_OPS(bd2802_pm, bd2802_suspend, bd2802_resume);

static const struct i2c_device_id bd2802_id[] = …;
MODULE_DEVICE_TABLE(i2c, bd2802_id);

static struct i2c_driver bd2802_i2c_driver = …;

module_i2c_driver(…) …;

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