/* Turn off auto Xon flow control */
efr &= ~UART_17158_EFR_IXON;
- /* Why? Because Exar's spec says we have to zero it
+ /*
+ * Why? Because Exar's spec says we have to zero it
* out before setting it
*/
writeb(0, &ch->ch_neo_uart->efr);
ier &= ~UART_17158_IER_XOFF;
efr &= ~UART_17158_EFR_IXOFF;
- /* Why? Because Exar's spec says we have to zero it
+ /*
+ * Why? Because Exar's spec says we have to zero it
* out before setting it
*/
writeb(0, &ch->ch_neo_uart->efr);
/* Turn on auto Xon flow control */
efr |= (UART_17158_EFR_ECB | UART_17158_EFR_IXON);
- /* Why? Because Exar's spec says we have to zero it
+ /*
+ * Why? Because Exar's spec says we have to zero it
* out before setting it
*/
writeb(0, &ch->ch_neo_uart->efr);
ier |= UART_17158_IER_XOFF;
efr |= (UART_17158_EFR_ECB | UART_17158_EFR_IXOFF);
- /* Why? Because Exar's spec says we have to zero it
+ /*
+ * Why? Because Exar's spec says we have to zero it
* out before setting it
*/
writeb(0, &ch->ch_neo_uart->efr);
else
efr &= ~(UART_17158_EFR_ECB | UART_17158_EFR_IXOFF);
- /* Why? Because Exar's spec says we have to zero
+ /*
+ * Why? Because Exar's spec says we have to zero
* it out before setting it
*/
writeb(0, &ch->ch_neo_uart->efr);
else
efr &= ~(UART_17158_EFR_ECB | UART_17158_EFR_IXON);
- /* Why? Because Exar's spec says we have to zero it
+ /*
+ * Why? Because Exar's spec says we have to zero it
* out before setting it
*/
writeb(0, &ch->ch_neo_uart->efr);
neo_pci_posting_flush(ch->ch_bd);
}
-/*
- * No locks are assumed to be held when calling this function.
- */
+/* No locks are assumed to be held when calling this function. */
+
static inline void neo_clear_break(struct channel_t *ch, int force)
{
unsigned long flags;
spin_unlock_irqrestore(&ch->ch_lock, flags);
}
-/*
- * Parse the ISR register.
- */
+/* Parse the ISR register. */
+
static inline void neo_parse_isr(struct dgnc_board *brd, uint port)
{
struct channel_t *ch;
if (isr & (UART_17158_IIR_RDI_TIMEOUT | UART_IIR_RDI)) {
/* Read data from uart -> queue */
neo_copy_data_from_uart_to_queue(ch);
-
- /* Call our tty layer to enforce queue
+ /*
+ * Call our tty layer to enforce queue
* flow control if needed.
*/
spin_lock_irqsave(&ch->ch_lock, flags);
* one it was, so we can suspend or resume data flow.
*/
if (cause == UART_17158_XON_DETECT) {
- /* Is output stopped right now, if so,
+ /*
+ * Is output stopped right now, if so,
* resume it
*/
if (brd->channels[port]->ch_flags & CH_STOP) {
if (!bd || bd->magic != DGNC_BOARD_MAGIC)
return;
- /*
- * If baud rate is zero, flush queues, and set mval to drop DTR.
- */
+ /* If baud rate is zero, flush queues, and set mval to drop DTR. */
+
if ((ch->ch_c_cflag & (CBAUD)) == 0) {
ch->ch_r_head = 0;
ch->ch_r_tail = 0;
4800, 9600, 19200, 38400 }
};
- /* Only use the TXPrint baud rate if the terminal unit
+ /*
+ * Only use the TXPrint baud rate if the terminal unit
* is NOT open
*/
if (!(ch->ch_tun.un_flags & UN_ISOPEN) &&
if (ch->ch_digi.digi_flags & CTSPACE || ch->ch_c_cflag & CRTSCTS) {
neo_set_cts_flow_control(ch);
} else if (ch->ch_c_iflag & IXON) {
- /* If start/stop is set to disable, then we should
+ /*
+ * If start/stop is set to disable, then we should
* disable flow control
*/
if ((ch->ch_startc == _POSIX_VDISABLE) ||
if (ch->ch_digi.digi_flags & RTSPACE || ch->ch_c_cflag & CRTSCTS) {
neo_set_rts_flow_control(ch);
} else if (ch->ch_c_iflag & IXOFF) {
- /* If start/stop is set to disable, then we should
+ /*
+ * If start/stop is set to disable, then we should
* disable flow control
*/
if ((ch->ch_startc == _POSIX_VDISABLE) ||
neo_parse_modem(ch, readb(&ch->ch_neo_uart->msr));
}
-/*
- * Our board poller function.
- */
+/* Our board poller function. */
+
static void neo_tasklet(unsigned long data)
{
struct dgnc_board *bd = (struct dgnc_board *)data;
*/
spin_lock_irqsave(&bd->bd_intr_lock, flags);
- /*
- * If board is ready, parse deeper to see if there is anything to do.
- */
+ /* If board is ready, parse deeper to see if there is anything to do. */
+
if ((state == BOARD_READY) && (ports > 0)) {
/* Loop on each port */
for (i = 0; i < ports; i++) {
break;
case UART_17158_RX_LINE_STATUS:
- /*
- * RXRDY and RX LINE Status (logic OR of LSR[4:1])
- */
+
+ /* RXRDY and RX LINE Status (logic OR of LSR[4:1]) */
+
neo_parse_lsr(brd, port);
break;
break;
case UART_17158_MSR:
- /*
- * MSR or flow control was seen.
- */
+
+ /* MSR or flow control was seen. */
+
neo_parse_isr(brd, port);
break;
port++;
}
- /*
- * Schedule tasklet to more in-depth servicing at a better time.
- */
+ /* Schedule tasklet to more in-depth servicing at a better time. */
+
tasklet_schedule(&brd->helper_tasklet);
spin_unlock_irqrestore(&brd->bd_intr_lock, flags);
ch->ch_flags |= (CH_TX_FIFO_EMPTY | CH_TX_FIFO_LWM);
}
- /*
- * Discard character if we are ignoring the error mask.
- */
+ /* Discard character if we are ignoring the error mask. */
+
if (linestatus & error_mask) {
unsigned char discard;
ch->ch_rxcount++;
}
- /*
- * Write new final heads to channel structure.
- */
+ /* Write new final heads to channel structure. */
+
ch->ch_r_head = head & RQUEUEMASK;
ch->ch_e_head = head & EQUEUEMASK;
(ch->ch_flags & CH_BREAK_SENDING))
goto exit_unlock;
- /*
- * If FIFOs are disabled. Send data directly to txrx register
- */
+ /* If FIFOs are disabled. Send data directly to txrx register */
+
if (!(ch->ch_flags & CH_FIFO_ENABLED)) {
unsigned char lsrbits = readb(&ch->ch_neo_uart->lsr);
goto exit_unlock;
}
- /*
- * We have to do it this way, because of the EXAR TXFIFO count bug.
- */
+ /* We have to do it this way, because of the EXAR TXFIFO count bug. */
+
if ((ch->ch_bd->dvid & 0xf0) < UART_XR17E158_DVID) {
if (!(ch->ch_flags & (CH_TX_FIFO_EMPTY | CH_TX_FIFO_LWM)))
goto exit_unlock;
}
}
-/*
- * neo_uart_init
- */
+/* neo_uart_init */
+
static void neo_uart_init(struct channel_t *ch)
{
writeb(0, &ch->ch_neo_uart->ier);
neo_pci_posting_flush(ch->ch_bd);
}
-/*
- * Make the UART completely turn off.
- */
+/* Make the UART completely turn off. */
+
static void neo_uart_off(struct channel_t *ch)
{
/* Turn off UART enhanced bits */
/* Channel lock MUST be held by the calling function! */
static void neo_send_break(struct channel_t *ch, int msecs)
{
- /*
- * If we receive a time of 0, this means turn off the break.
- */
+ /* If we receive a time of 0, this means turn off the break. */
+
if (msecs == 0) {
if (ch->ch_flags & CH_BREAK_SENDING) {
unsigned char temp = readb(&ch->ch_neo_uart->lcr);
projects / karo-tx-linux.git / blobdiff