| /* |
| * 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" |
| |
| 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); |
| } |
| |
| 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 (led_trigger_register(&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 hci_leds_exit(struct hci_dev *hdev) |
| { |
| if (hdev->power_led) |
| led_trigger_unregister(hdev->power_led); |
| } |