// SPDX-License-Identifier: GPL-2.0-only
|
/*
|
* Copyright 2015, Heiner Kallweit <hkallweit1@gmail.com>
|
*/
|
|
#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 int 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);
|
|
return 0;
|
}
|
|
static struct led_trigger *led_allocate_basic(struct hci_dev *hdev,
|
int (*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);
|
}
|
