static irqreturn_t ite_cir_isr(int irq, void *data)
{
struct ite_dev *dev = data;
unsigned long flags;
irqreturn_t ret = IRQ_RETVAL(IRQ_NONE);
u8 rx_buf[ITE_RX_FIFO_LEN];
int rx_bytes;
int iflags;
ite_dbg_verbose("%s firing", __func__);
spin_lock_irqsave(&dev->lock, flags);
iflags = dev->params.get_irq_causes(dev);
if (iflags & (ITE_IRQ_RX_FIFO | ITE_IRQ_RX_FIFO_OVERRUN)) {
rx_bytes =
dev->params.get_rx_bytes(dev, rx_buf,
ITE_RX_FIFO_LEN);
if (rx_bytes > 0) {
spin_unlock_irqrestore(&dev->
lock,
flags);
ite_decode_bytes(dev, rx_buf,
rx_bytes);
spin_lock_irqsave(&dev->lock,
flags);
ret = IRQ_RETVAL(IRQ_HANDLED);
}
} else if (iflags & ITE_IRQ_TX_FIFO) {
ite_dbg_verbose("got interrupt for TX FIFO");
wake_up_interruptible(&dev->tx_queue);
ret = IRQ_RETVAL(IRQ_HANDLED);
}
spin_unlock_irqrestore(&dev->lock, flags);
ite_dbg_verbose("%s done returning %d", __func__, (int)ret);
return ret;
}
/* interrupt service routine for incoming and outgoing CIR data */
static irqreturn_t ite_cir_isr(int irq, void *data)
{
struct ite_dev *dev = data;
unsigned long flags;
irqreturn_t ret = IRQ_RETVAL(IRQ_NONE);
u8 rx_buf[ITE_RX_FIFO_LEN];
int rx_bytes;
int iflags;
ite_dbg_verbose("%s firing", __func__);
/* grab the spinlock */
spin_lock_irqsave(&dev->lock, flags);
/* read the interrupt flags */
iflags = dev->params.get_irq_causes(dev);
/* check for the receive interrupt */
if (iflags & (ITE_IRQ_RX_FIFO | ITE_IRQ_RX_FIFO_OVERRUN)) {
/* read the FIFO bytes */
rx_bytes =
dev->params.get_rx_bytes(dev, rx_buf,
ITE_RX_FIFO_LEN);
if (rx_bytes > 0) {
/* drop the spinlock, since the ir-core layer
* may call us back again through
* ite_s_idle() */
spin_unlock_irqrestore(&dev->
lock,
flags);
/* decode the data we've just received */
ite_decode_bytes(dev, rx_buf,
rx_bytes);
/* reacquire the spinlock */
spin_lock_irqsave(&dev->lock,
flags);
/* mark the interrupt as serviced */
ret = IRQ_RETVAL(IRQ_HANDLED);
}
} else if (iflags & ITE_IRQ_TX_FIFO) {
/* FIFO space available interrupt */
ite_dbg_verbose("got interrupt for TX FIFO");
/* wake any sleeping transmitter */
wake_up_interruptible(&dev->tx_queue);
/* mark the interrupt as serviced */
ret = IRQ_RETVAL(IRQ_HANDLED);
}
/* drop the spinlock */
spin_unlock_irqrestore(&dev->lock, flags);
ite_dbg_verbose("%s done returning %d", __func__, (int)ret);
return ret;
}
