static void hostwake_interrupt(unsigned long data)
{
BT_INFO(" wakeup host\n");
}
static int __init btusb_init(void)
{
BT_INFO("Generic Bluetooth USB driver ver %s", VERSION);
return usb_register(&btusb_driver);
}
static int ath_bluesleep_gpio_config(int on)
{
int ret = 0;
BT_INFO("%s config: %d", __func__, on);
if (!on) {
if (disable_irq_wake(bsi->host_wake_irq))
BT_ERR("Couldn't disable hostwake IRQ wakeup mode\n");
goto free_host_wake_irq;
}
ret = gpio_request(bsi->host_wake, "bt_host_wake");
if (ret < 0) {
BT_ERR("failed to request gpio pin %d, error %d\n",
bsi->host_wake, ret);
goto gpio_config_failed;
}
/* configure host_wake as input */
ret = gpio_direction_input(bsi->host_wake);
if (ret < 0) {
BT_ERR("failed to config GPIO %d as input pin, err %d\n",
bsi->host_wake, ret);
goto gpio_host_wake;
}
ret = gpio_request(bsi->ext_wake, "bt_ext_wake");
if (ret < 0) {
BT_ERR("failed to request gpio pin %d, error %d\n",
bsi->ext_wake, ret);
goto gpio_host_wake;
}
ret = gpio_direction_output(bsi->ext_wake, 1);
if (ret < 0) {
BT_ERR("failed to config GPIO %d as output pin, err %d\n",
bsi->ext_wake, ret);
goto gpio_ext_wake;
}
gpio_set_value(bsi->ext_wake, 1);
/* Initialize spinlock. */
spin_lock_init(&rw_lock);
/* Initialize timer */
init_timer(&tx_timer);
tx_timer.function = bluesleep_tx_timer_expire;
tx_timer.data = 0;
/* initialize host wake tasklet */
tasklet_init(&hostwake_task, hostwake_interrupt, 0);
if (bsi->irq_polarity == POLARITY_LOW) {
ret = request_irq(bsi->host_wake_irq, bluesleep_hostwake_isr,
IRQF_DISABLED | IRQF_TRIGGER_FALLING,
"bluetooth hostwake", NULL);
} else {
ret = request_irq(bsi->host_wake_irq, bluesleep_hostwake_isr,
IRQF_DISABLED | IRQF_TRIGGER_RISING,
"bluetooth hostwake", NULL);
}
if (ret < 0) {
BT_ERR("Couldn't acquire BT_HOST_WAKE IRQ");
goto delete_timer;
}
ret = enable_irq_wake(bsi->host_wake_irq);
if (ret < 0) {
BT_ERR("Couldn't enable BT_HOST_WAKE as wakeup interrupt");
goto free_host_wake_irq;
}
return 0;
free_host_wake_irq:
free_irq(bsi->host_wake_irq, NULL);
delete_timer:
del_timer(&tx_timer);
gpio_ext_wake:
gpio_free(bsi->ext_wake);
gpio_host_wake:
gpio_free(bsi->host_wake);
gpio_config_failed:
return ret;
}