1// SPDX-License-Identifier: GPL-2.0
 2/* Author: Hans de Goede <hdegoede@redhat.com> */
 3
 4#include <linux/acpi.h>
 5#include <linux/gpio/consumer.h>
 6#include <linux/leds.h>
 7#include "common.h"
 8
 9static int int3472_pled_set(struct led_classdev *led_cdev,
10				     enum led_brightness brightness)
11{
12	struct int3472_discrete_device *int3472 =
13		container_of(led_cdev, struct int3472_discrete_device, pled.classdev);
14
15	gpiod_set_value_cansleep(int3472->pled.gpio, brightness);
16	return 0;
17}
18
19int skl_int3472_register_pled(struct int3472_discrete_device *int3472, struct gpio_desc *gpio)
20{
21	char *p;
22	int ret;
23
24	if (int3472->pled.classdev.dev)
25		return -EBUSY;
26
27	int3472->pled.gpio = gpio;
28
29	/* Generate the name, replacing the ':' in the ACPI devname with '_' */
30	snprintf(int3472->pled.name, sizeof(int3472->pled.name),
31		 "%s::privacy_led", acpi_dev_name(int3472->sensor));
32	p = strchr(int3472->pled.name, ':');
33	if (p)
34		*p = '_';
35
36	int3472->pled.classdev.name = int3472->pled.name;
37	int3472->pled.classdev.max_brightness = 1;
38	int3472->pled.classdev.brightness_set_blocking = int3472_pled_set;
39
40	ret = led_classdev_register(int3472->dev, &int3472->pled.classdev);
41	if (ret)
42		return ret;
43
44	int3472->pled.lookup.provider = int3472->pled.name;
45	int3472->pled.lookup.dev_id = int3472->sensor_name;
46	int3472->pled.lookup.con_id = "privacy-led";
47	led_add_lookup(&int3472->pled.lookup);
48
49	return 0;
50}
51
52void skl_int3472_unregister_pled(struct int3472_discrete_device *int3472)
53{
54	if (IS_ERR_OR_NULL(int3472->pled.classdev.dev))
55		return;
56
57	led_remove_lookup(&int3472->pled.lookup);
58	led_classdev_unregister(&int3472->pled.classdev);
59}