/*
* Cabrcmed upon a sleep-indication from the device
*/
static void brcm_device_want_to_sleep(struct hci_uart *hu)
{
unsigned long flags;
struct brcm_struct *brcm = hu->priv;
BT_DBG("hu %p", hu);
/* lock hcibrcm state */
spin_lock_irqsave(&brcm->hcibrcm_lock, flags);
/* sanity check */
if (brcm->hcibrcm_state != HCIBRCM_AWAKE)
BT_ERR("ERR: HCIBRCM_GO_TO_SLEEP_IND in state %ld", brcm->hcibrcm_state);
/* acknowledge device sleep */
if (send_hcibrcm_cmd(HCIBRCM_GO_TO_SLEEP_ACK, hu) < 0) {
BT_ERR("cannot acknowledge device sleep");
goto out;
}
/* update state */
brcm->hcibrcm_state = HCIBRCM_ASLEEP;
out:
spin_unlock_irqrestore(&brcm->hcibrcm_lock, flags);
/* actuabrcmy send the sleep ack packet */
hci_uart_tx_wakeup(hu);
spin_lock_irqsave(&brcm->hcibrcm_lock, flags);
if (brcm->hcibrcm_state == HCIBRCM_ASLEEP)
__brcm_msm_serial_clock_request_off(hu->tty);
spin_unlock_irqrestore(&brcm->hcibrcm_lock, flags);
}
static void serial_asleep(struct hci_uart *hu)
{
struct brcm_struct *lbrcm = (struct brcm_struct *)hu->priv;
unsigned long flags;
if (lbrcm->hcibrcm_state_serial == HCIBRCM_ASLEEP)
return;
lbrcm->inactive_period_serial += TIMER_PERIOD;
if (lbrcm->inactive_period_serial < HOST_CONTROLLER_IDLE_TSH_SERIAL)
return;
if (!can_sleep(hu))
return;
spin_lock_irqsave(&lbrcm->hcibrcm_lock, flags);
__brcm_msm_serial_clock_request_off(hu->tty);
lbrcm->hcibrcm_state_serial = HCIBRCM_ASLEEP;
spin_unlock_irqrestore(&lbrcm->hcibrcm_lock, flags);
BT_DBG("bluetooth serial clock off");
}
