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6d5d2ee6 HK |
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 | ||
14 | struct 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 | ||
22 | void 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 | ||
29 | static 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 | ||
40 | static 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 | ||
b6e402fc | 58 | if (devm_led_trigger_register(&hdev->dev, &htrig->led_trigger)) |
6d5d2ee6 HK |
59 | goto err_register; |
60 | ||
61 | return &htrig->led_trigger; | |
62 | ||
63 | err_register: | |
64 | devm_kfree(&hdev->dev, (void *)htrig->led_trigger.name); | |
65 | err_alloc: | |
66 | devm_kfree(&hdev->dev, htrig); | |
67 | return NULL; | |
68 | } | |
69 | ||
70 | void hci_leds_init(struct hci_dev *hdev) | |
71 | { | |
72 | /* initialize power_led */ | |
73 | hdev->power_led = led_allocate_basic(hdev, power_activate, "power"); | |
74 | } |