Move definitions for liteuart_[stop|start]_tx(), liteuart_stop_rx(),
and liteuart_putchar() to a more convenient location in preparation
for adding IRQ support. This patch contains no functional changes.
Signed-off-by: Gabriel Somlo <gsomlo@xxxxxxxxx>
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@xxxxxxxxxxxxxxx>
---
drivers/tty/serial/liteuart.c | 82 +++++++++++++++++------------------
1 file changed, 41 insertions(+), 41 deletions(-)
diff --git a/drivers/tty/serial/liteuart.c b/drivers/tty/serial/liteuart.c
index 76f8a09b82cd..8a6e176be08e 100644
--- a/drivers/tty/serial/liteuart.c
+++ b/drivers/tty/serial/liteuart.c
@@ -68,6 +68,47 @@ static struct uart_driver liteuart_driver = {
#endif
};
+static void liteuart_putchar(struct uart_port *port, unsigned char ch)
+{
+ while (litex_read8(port->membase + OFF_TXFULL))
+ cpu_relax();
+
+ litex_write8(port->membase + OFF_RXTX, ch);
+}
+
+static void liteuart_stop_tx(struct uart_port *port)
+{
+}
+
+static void liteuart_start_tx(struct uart_port *port)
+{
+ struct circ_buf *xmit = &port->state->xmit;
+ unsigned char ch;
+
+ if (unlikely(port->x_char)) {
+ litex_write8(port->membase + OFF_RXTX, port->x_char);
+ port->icount.tx++;
+ port->x_char = 0;
+ } else if (!uart_circ_empty(xmit)) {
+ while (xmit->head != xmit->tail) {
+ ch = xmit->buf[xmit->tail];
+ uart_xmit_advance(port, 1);
+ liteuart_putchar(port, ch);
+ }
+ }
+
+ if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS)
+ uart_write_wakeup(port);
+}
+
+static void liteuart_stop_rx(struct uart_port *port)
+{
+ struct liteuart_port *uart = to_liteuart_port(port);
+
+ /* just delete timer */
+ del_timer(&uart->timer);
+}
+
static void liteuart_rx_chars(struct uart_port *port)
{
unsigned char __iomem *membase = port->membase;
@@ -98,14 +139,6 @@ static void liteuart_timer(struct timer_list *t)
mod_timer(&uart->timer, jiffies + uart_poll_timeout(port));
}
-static void liteuart_putchar(struct uart_port *port, unsigned char ch)
-{
- while (litex_read8(port->membase + OFF_TXFULL))
- cpu_relax();
-
- litex_write8(port->membase + OFF_RXTX, ch);
-}
-
static unsigned int liteuart_tx_empty(struct uart_port *port)
{
/* not really tx empty, just checking if tx is not full */
@@ -125,39 +158,6 @@ static unsigned int liteuart_get_mctrl(struct uart_port *port)
return TIOCM_CTS | TIOCM_DSR | TIOCM_CAR;
}
-static void liteuart_stop_tx(struct uart_port *port)
-{
-}
-
-static void liteuart_start_tx(struct uart_port *port)
-{
- struct circ_buf *xmit = &port->state->xmit;
- unsigned char ch;
-
- if (unlikely(port->x_char)) {
- litex_write8(port->membase + OFF_RXTX, port->x_char);
- port->icount.tx++;
- port->x_char = 0;
- } else if (!uart_circ_empty(xmit)) {
- while (xmit->head != xmit->tail) {
- ch = xmit->buf[xmit->tail];
- uart_xmit_advance(port, 1);
- liteuart_putchar(port, ch);
- }
- }
-
- if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS)
- uart_write_wakeup(port);
-}
-
-static void liteuart_stop_rx(struct uart_port *port)
-{
- struct liteuart_port *uart = to_liteuart_port(port);
-
- /* just delete timer */
- del_timer(&uart->timer);
-}
-
static int liteuart_startup(struct uart_port *port)
{
struct liteuart_port *uart = to_liteuart_port(port);
--
2.38.1
