diff mbox series

[v3,11/14] serial: liteuart: move function definitions

Message ID	20221112212125.448824-12-gsomlo@gmail.com
State	New
Headers	Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; From: Gabriel Somlo <gsomlo@gmail.com> To: linux-kernel@vger.kernel.org Cc: linux-serial@vger.kernel.org, gregkh@linuxfoundation.org, jirislaby@kernel.org, kgugala@antmicro.com, mholenko@antmicro.com, joel@jms.id.au, david.abdurachmanov@gmail.com, florent@enjoy-digital.fr, geert@linux-m68k.org Subject: [PATCH v3 11/14] serial: liteuart: move function definitions Date: Sat, 12 Nov 2022 16:21:22 -0500 Message-Id: <20221112212125.448824-12-gsomlo@gmail.com> In-Reply-To: <20221112212125.448824-1-gsomlo@gmail.com> References: <20221112212125.448824-1-gsomlo@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk
Series	serial: liteuart: add IRQ support \| [v3,00/14] serial: liteuart: add IRQ support [v3,01/14] serial: liteuart: use KBUILD_MODNAME as driver name [v3,02/14] serial: liteuart: use bit number macros [v3,03/14] serial: liteuart: remove unused uart_ops stubs [v3,04/14] serial: liteuart: don't set unused port fields [v3,05/14] serial: liteuart: minor style fix in liteuart_init() [v3,06/14] serial: liteuart: move tty_flip_buffer_push() out of rx loop [v3,07/14] serial: liteuart: rx loop should only ack rx events [v3,08/14] serial: liteuart: simplify passing of uart_insert_char() flag [v3,09/14] serial: liteuart: fix rx loop variable types [v3,10/14] serial: liteuart: separate rx loop from poll timer [v3,11/14] serial: liteuart: move function definitions [v3,12/14] serial: liteuart: add IRQ support for the RX path [v3,13/14] serial: liteuart: add IRQ support for the TX path [v3,14/14] serial: liteuart: move polling putchar() function

Commit Message

Gabriel L. Somlo Nov. 12, 2022, 9:21 p.m. UTC

  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@gmail.com>
---
 drivers/tty/serial/liteuart.c | 98 +++++++++++++++++------------------
 1 file changed, 49 insertions(+), 49 deletions(-)

Comments

Ilpo Järvinen Nov. 15, 2022, 3:48 p.m. UTC | #1

On Sat, 12 Nov 2022, Gabriel Somlo wrote:

> 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@gmail.com>
> ---
>  drivers/tty/serial/liteuart.c | 98 +++++++++++++++++------------------
>  1 file changed, 49 insertions(+), 49 deletions(-)
> 
> diff --git a/drivers/tty/serial/liteuart.c b/drivers/tty/serial/liteuart.c
> index 172ac190ba2f..cf1ce597b45e 100644
> --- a/drivers/tty/serial/liteuart.c
> +++ b/drivers/tty/serial/liteuart.c
> @@ -67,36 +67,6 @@ static struct uart_driver liteuart_driver = {
>  #endif
>  };
>  
> -static void liteuart_rx_chars(struct uart_port *port)
> -{
> -	unsigned char __iomem *membase = port->membase;
> -	unsigned int status, ch;
> -
> -	while ((status = !litex_read8(membase + OFF_RXEMPTY)) == 1) {
> -		ch = litex_read8(membase + OFF_RXTX);
> -		port->icount.rx++;
> -
> -		/* necessary for RXEMPTY to refresh its value */
> -		litex_write8(membase + OFF_EV_PENDING, EV_RX);
> -
> -		/* no overflow bits in status */
> -		if (!(uart_handle_sysrq_char(port, ch)))
> -			uart_insert_char(port, status, 0, ch, TTY_NORMAL);
> -	}
> -
> -	tty_flip_buffer_push(&port->state->port);
> -}
> -
> -static void liteuart_timer(struct timer_list *t)
> -{
> -	struct liteuart_port *uart = from_timer(uart, t, timer);
> -	struct uart_port *port = &uart->port;
> -
> -	liteuart_rx_chars(port);
> -
> -	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))
> @@ -105,25 +75,6 @@ static void liteuart_putchar(struct uart_port *port, unsigned char ch)
>  	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 */
> -	if (!litex_read8(port->membase + OFF_TXFULL))
> -		return TIOCSER_TEMT;
> -
> -	return 0;
> -}
> -
> -static void liteuart_set_mctrl(struct uart_port *port, unsigned int mctrl)
> -{
> -	/* modem control register is not present in LiteUART */
> -}
> -
> -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)
>  {
>  	/* not used in LiteUART, but called unconditionally from serial_core */
> @@ -159,6 +110,55 @@ static void liteuart_stop_rx(struct uart_port *port)
>  	del_timer(&uart->timer);
>  }
>  
> +static void liteuart_rx_chars(struct uart_port *port)
> +{
> +	unsigned char __iomem *membase = port->membase;
> +	unsigned int status, ch;
> +
> +	while ((status = !litex_read8(membase + OFF_RXEMPTY)) == 1) {
> +		ch = litex_read8(membase + OFF_RXTX);
> +		port->icount.rx++;
> +
> +		/* necessary for RXEMPTY to refresh its value */
> +		litex_write8(membase + OFF_EV_PENDING, EV_RX);
> +
> +		/* no overflow bits in status */
> +		if (!(uart_handle_sysrq_char(port, ch)))
> +			uart_insert_char(port, status, 0, ch, TTY_NORMAL);
> +	}
> +
> +	tty_flip_buffer_push(&port->state->port);
> +}
> +
> +static void liteuart_timer(struct timer_list *t)
> +{
> +	struct liteuart_port *uart = from_timer(uart, t, timer);
> +	struct uart_port *port = &uart->port;
> +
> +	liteuart_rx_chars(port);
> +
> +	mod_timer(&uart->timer, jiffies + uart_poll_timeout(port));
> +}
> +
> +static unsigned int liteuart_tx_empty(struct uart_port *port)
> +{
> +	/* not really tx empty, just checking if tx is not full */
> +	if (!litex_read8(port->membase + OFF_TXFULL))
> +		return TIOCSER_TEMT;
> +
> +	return 0;
> +}
> +
> +static void liteuart_set_mctrl(struct uart_port *port, unsigned int mctrl)
> +{
> +	/* modem control register is not present in LiteUART */
> +}
> +
> +static unsigned int liteuart_get_mctrl(struct uart_port *port)
> +{
> +	return TIOCM_CTS | TIOCM_DSR | TIOCM_CAR;
> +}
> +
>  static int liteuart_startup(struct uart_port *port)
>  {
>  	struct liteuart_port *uart = to_liteuart_port(port);
> 

Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>

diff mbox series

Patch

diff --git a/drivers/tty/serial/liteuart.c b/drivers/tty/serial/liteuart.c
index 172ac190ba2f..cf1ce597b45e 100644
--- a/drivers/tty/serial/liteuart.c
+++ b/drivers/tty/serial/liteuart.c
@@ -67,36 +67,6 @@  static struct uart_driver liteuart_driver = {
 #endif
 };
 
-static void liteuart_rx_chars(struct uart_port *port)
-{
-	unsigned char __iomem *membase = port->membase;
-	unsigned int status, ch;
-
-	while ((status = !litex_read8(membase + OFF_RXEMPTY)) == 1) {
-		ch = litex_read8(membase + OFF_RXTX);
-		port->icount.rx++;
-
-		/* necessary for RXEMPTY to refresh its value */
-		litex_write8(membase + OFF_EV_PENDING, EV_RX);
-
-		/* no overflow bits in status */
-		if (!(uart_handle_sysrq_char(port, ch)))
-			uart_insert_char(port, status, 0, ch, TTY_NORMAL);
-	}
-
-	tty_flip_buffer_push(&port->state->port);
-}
-
-static void liteuart_timer(struct timer_list *t)
-{
-	struct liteuart_port *uart = from_timer(uart, t, timer);
-	struct uart_port *port = &uart->port;
-
-	liteuart_rx_chars(port);
-
-	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))
@@ -105,25 +75,6 @@  static void liteuart_putchar(struct uart_port *port, unsigned char ch)
 	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 */
-	if (!litex_read8(port->membase + OFF_TXFULL))
-		return TIOCSER_TEMT;
-
-	return 0;
-}
-
-static void liteuart_set_mctrl(struct uart_port *port, unsigned int mctrl)
-{
-	/* modem control register is not present in LiteUART */
-}
-
-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)
 {
 	/* not used in LiteUART, but called unconditionally from serial_core */
@@ -159,6 +110,55 @@  static void liteuart_stop_rx(struct uart_port *port)
 	del_timer(&uart->timer);
 }
 
+static void liteuart_rx_chars(struct uart_port *port)
+{
+	unsigned char __iomem *membase = port->membase;
+	unsigned int status, ch;
+
+	while ((status = !litex_read8(membase + OFF_RXEMPTY)) == 1) {
+		ch = litex_read8(membase + OFF_RXTX);
+		port->icount.rx++;
+
+		/* necessary for RXEMPTY to refresh its value */
+		litex_write8(membase + OFF_EV_PENDING, EV_RX);
+
+		/* no overflow bits in status */
+		if (!(uart_handle_sysrq_char(port, ch)))
+			uart_insert_char(port, status, 0, ch, TTY_NORMAL);
+	}
+
+	tty_flip_buffer_push(&port->state->port);
+}
+
+static void liteuart_timer(struct timer_list *t)
+{
+	struct liteuart_port *uart = from_timer(uart, t, timer);
+	struct uart_port *port = &uart->port;
+
+	liteuart_rx_chars(port);
+
+	mod_timer(&uart->timer, jiffies + uart_poll_timeout(port));
+}
+
+static unsigned int liteuart_tx_empty(struct uart_port *port)
+{
+	/* not really tx empty, just checking if tx is not full */
+	if (!litex_read8(port->membase + OFF_TXFULL))
+		return TIOCSER_TEMT;
+
+	return 0;
+}
+
+static void liteuart_set_mctrl(struct uart_port *port, unsigned int mctrl)
+{
+	/* modem control register is not present in LiteUART */
+}
+
+static unsigned int liteuart_get_mctrl(struct uart_port *port)
+{
+	return TIOCM_CTS | TIOCM_DSR | TIOCM_CAR;
+}
+
 static int liteuart_startup(struct uart_port *port)
 {
 	struct liteuart_port *uart = to_liteuart_port(port);