1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
|
/*
* Copyright 2015, Heiner Kallweit <hkallweit1@gmail.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#include <net/bluetooth/bluetooth.h>
#include <net/bluetooth/hci_core.h>
#include "leds.h"
DEFINE_LED_TRIGGER(bt_power_led_trigger);
struct hci_basic_led_trigger {
struct led_trigger led_trigger;
struct hci_dev *hdev;
};
#define to_hci_basic_led_trigger(arg) container_of(arg, \
struct hci_basic_led_trigger, led_trigger)
void hci_leds_update_powered(struct hci_dev *hdev, bool enabled)
{
if (hdev->power_led)
led_trigger_event(hdev->power_led,
enabled ? LED_FULL : LED_OFF);
if (!enabled) {
struct hci_dev *d;
read_lock(&hci_dev_list_lock);
list_for_each_entry(d, &hci_dev_list, list) {
if (test_bit(HCI_UP, &d->flags))
enabled = true;
}
read_unlock(&hci_dev_list_lock);
}
led_trigger_event(bt_power_led_trigger, enabled ? LED_FULL : LED_OFF);
}
static void power_activate(struct led_classdev *led_cdev)
{
struct hci_basic_led_trigger *htrig;
bool powered;
htrig = to_hci_basic_led_trigger(led_cdev->trigger);
powered = test_bit(HCI_UP, &htrig->hdev->flags);
led_trigger_event(led_cdev->trigger, powered ? LED_FULL : LED_OFF);
}
static struct led_trigger *led_allocate_basic(struct hci_dev *hdev,
void (*activate)(struct led_classdev *led_cdev),
const char *name)
{
struct hci_basic_led_trigger *htrig;
htrig = devm_kzalloc(&hdev->dev, sizeof(*htrig), GFP_KERNEL);
if (!htrig)
return NULL;
htrig->hdev = hdev;
htrig->led_trigger.activate = activate;
htrig->led_trigger.name = devm_kasprintf(&hdev->dev, GFP_KERNEL,
"%s-%s", hdev->name,
name);
if (!htrig->led_trigger.name)
goto err_alloc;
if (devm_led_trigger_register(&hdev->dev, &htrig->led_trigger))
goto err_register;
return &htrig->led_trigger;
err_register:
devm_kfree(&hdev->dev, (void *)htrig->led_trigger.name);
err_alloc:
devm_kfree(&hdev->dev, htrig);
return NULL;
}
void hci_leds_init(struct hci_dev *hdev)
{
/* initialize power_led */
hdev->power_led = led_allocate_basic(hdev, power_activate, "power");
}
void bt_leds_init(void)
{
led_trigger_register_simple("bluetooth-power", &bt_power_led_trigger);
}
void bt_leds_cleanup(void)
{
led_trigger_unregister_simple(bt_power_led_trigger);
}
|
