1// SPDX-License-Identifier: GPL-2.0-only
  2/*
  3 * Copyright 2015, Heiner Kallweit <hkallweit1@gmail.com>
 
 
 
 
  4 */
  5
  6#include <net/bluetooth/bluetooth.h>
  7#include <net/bluetooth/hci_core.h>
  8
  9#include "leds.h"
 10
 11DEFINE_LED_TRIGGER(bt_power_led_trigger);
 12
 13struct hci_basic_led_trigger {
 14	struct led_trigger	led_trigger;
 15	struct hci_dev		*hdev;
 16};
 17
 18#define to_hci_basic_led_trigger(arg) container_of(arg, \
 19			struct hci_basic_led_trigger, led_trigger)
 20
 21void hci_leds_update_powered(struct hci_dev *hdev, bool enabled)
 22{
 23	if (hdev->power_led)
 24		led_trigger_event(hdev->power_led,
 25				  enabled ? LED_FULL : LED_OFF);
 26
 27	if (!enabled) {
 28		struct hci_dev *d;
 29
 30		read_lock(&hci_dev_list_lock);
 31
 32		list_for_each_entry(d, &hci_dev_list, list) {
 33			if (test_bit(HCI_UP, &d->flags))
 34				enabled = true;
 35		}
 36
 37		read_unlock(&hci_dev_list_lock);
 38	}
 39
 40	led_trigger_event(bt_power_led_trigger, enabled ? LED_FULL : LED_OFF);
 41}
 42
 43static int power_activate(struct led_classdev *led_cdev)
 44{
 45	struct hci_basic_led_trigger *htrig;
 46	bool powered;
 47
 48	htrig = to_hci_basic_led_trigger(led_cdev->trigger);
 49	powered = test_bit(HCI_UP, &htrig->hdev->flags);
 50
 51	led_trigger_event(led_cdev->trigger, powered ? LED_FULL : LED_OFF);
 52
 53	return 0;
 54}
 55
 56static struct led_trigger *led_allocate_basic(struct hci_dev *hdev,
 57			int (*activate)(struct led_classdev *led_cdev),
 58			const char *name)
 59{
 60	struct hci_basic_led_trigger *htrig;
 61
 62	htrig =	devm_kzalloc(&hdev->dev, sizeof(*htrig), GFP_KERNEL);
 63	if (!htrig)
 64		return NULL;
 65
 66	htrig->hdev = hdev;
 67	htrig->led_trigger.activate = activate;
 68	htrig->led_trigger.name = devm_kasprintf(&hdev->dev, GFP_KERNEL,
 69						 "%s-%s", hdev->name,
 70						 name);
 71	if (!htrig->led_trigger.name)
 72		goto err_alloc;
 73
 74	if (devm_led_trigger_register(&hdev->dev, &htrig->led_trigger))
 75		goto err_register;
 76
 77	return &htrig->led_trigger;
 78
 79err_register:
 80	devm_kfree(&hdev->dev, (void *)htrig->led_trigger.name);
 81err_alloc:
 82	devm_kfree(&hdev->dev, htrig);
 83	return NULL;
 84}
 85
 86void hci_leds_init(struct hci_dev *hdev)
 87{
 88	/* initialize power_led */
 89	hdev->power_led = led_allocate_basic(hdev, power_activate, "power");
 90}
 91
 92void bt_leds_init(void)
 93{
 94	led_trigger_register_simple("bluetooth-power", &bt_power_led_trigger);
 95}
 96
 97void bt_leds_cleanup(void)
 98{
 99	led_trigger_unregister_simple(bt_power_led_trigger);
100}

 
 1/*
 2 * Copyright 2015, Heiner Kallweit <hkallweit1@gmail.com>
 3 *
 4 * This program is free software; you can redistribute it and/or modify
 5 * it under the terms of the GNU General Public License version 2 as
 6 * published by the Free Software Foundation.
 7 */
 8
 9#include <net/bluetooth/bluetooth.h>
10#include <net/bluetooth/hci_core.h>
11
12#include "leds.h"
13
 
 
14struct hci_basic_led_trigger {
15	struct led_trigger	led_trigger;
16	struct hci_dev		*hdev;
17};
18
19#define to_hci_basic_led_trigger(arg) container_of(arg, \
20			struct hci_basic_led_trigger, led_trigger)
21
22void hci_leds_update_powered(struct hci_dev *hdev, bool enabled)
23{
24	if (hdev->power_led)
25		led_trigger_event(hdev->power_led,
26				  enabled ? LED_FULL : LED_OFF);
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
27}
28
29static void power_activate(struct led_classdev *led_cdev)
30{
31	struct hci_basic_led_trigger *htrig;
32	bool powered;
33
34	htrig = to_hci_basic_led_trigger(led_cdev->trigger);
35	powered = test_bit(HCI_UP, &htrig->hdev->flags);
36
37	led_trigger_event(led_cdev->trigger, powered ? LED_FULL : LED_OFF);
 
 
38}
39
40static struct led_trigger *led_allocate_basic(struct hci_dev *hdev,
41			void (*activate)(struct led_classdev *led_cdev),
42			const char *name)
43{
44	struct hci_basic_led_trigger *htrig;
45
46	htrig =	devm_kzalloc(&hdev->dev, sizeof(*htrig), GFP_KERNEL);
47	if (!htrig)
48		return NULL;
49
50	htrig->hdev = hdev;
51	htrig->led_trigger.activate = activate;
52	htrig->led_trigger.name = devm_kasprintf(&hdev->dev, GFP_KERNEL,
53						 "%s-%s", hdev->name,
54						 name);
55	if (!htrig->led_trigger.name)
56		goto err_alloc;
57
58	if (devm_led_trigger_register(&hdev->dev, &htrig->led_trigger))
59		goto err_register;
60
61	return &htrig->led_trigger;
62
63err_register:
64	devm_kfree(&hdev->dev, (void *)htrig->led_trigger.name);
65err_alloc:
66	devm_kfree(&hdev->dev, htrig);
67	return NULL;
68}
69
70void hci_leds_init(struct hci_dev *hdev)
71{
72	/* initialize power_led */
73	hdev->power_led = led_allocate_basic(hdev, power_activate, "power");
 
 
 
 
 
 
 
 
 
 
74}