linux-kernel - [PATCH v4 4/7] serial: exar: moved generic_rs485 further up in 8250

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Message-ID: <a7bf2a42de759908c058246ec15f60bde9a5dc65.1713382717.git.pnewman@connecttech.com>
Date: Wed, 17 Apr 2024 16:31:26 -0400
From: Parker Newman <parker@...est.io>
To: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Jiri Slaby <jirislaby@...nel.org>,
	linux-kernel@...r.kernel.org,
	linux-serial@...r.kernel.org
Cc: Parker Newman <pnewman@...necttech.com>
Subject: [PATCH v4 4/7] serial: exar: moved generic_rs485 further up in 8250_exar.c

From: Parker Newman <pnewman@...necttech.com>

Preparatory patch moving generic_rs485_config and
generic_rs485_supported higher in the file to allow for CTI setup
functions to use them.

Signed-off-by: Parker Newman <pnewman@...necttech.com>
---
Changes in v3:
 - split into separate preparatory patch

 drivers/tty/serial/8250/8250_exar.c | 50 ++++++++++++++---------------
 1 file changed, 25 insertions(+), 25 deletions(-)

diff --git a/drivers/tty/serial/8250/8250_exar.c b/drivers/tty/serial/8250/8250_exar.c
index f14f73d250bb..e68029a59122 100644
--- a/drivers/tty/serial/8250/8250_exar.c
+++ b/drivers/tty/serial/8250/8250_exar.c
@@ -197,6 +197,31 @@ struct exar8250 {
 	int			line[];
 };

+static int generic_rs485_config(struct uart_port *port, struct ktermios *termios,
+				struct serial_rs485 *rs485)
+{
+	bool is_rs485 = !!(rs485->flags & SER_RS485_ENABLED);
+	u8 __iomem *p = port->membase;
+	u8 value;
+
+	value = readb(p + UART_EXAR_FCTR);
+	if (is_rs485)
+		value |= UART_FCTR_EXAR_485;
+	else
+		value &= ~UART_FCTR_EXAR_485;
+
+	writeb(value, p + UART_EXAR_FCTR);
+
+	if (is_rs485)
+		writeb(UART_EXAR_RS485_DLY(4), p + UART_MSR);
+
+	return 0;
+}
+
+static const struct serial_rs485 generic_rs485_supported = {
+	.flags = SER_RS485_ENABLED | SER_RS485_RTS_ON_SEND,
+};
+
 static void exar_pm(struct uart_port *port, unsigned int state, unsigned int old)
 {
 	/*
@@ -459,27 +484,6 @@ static void xr17v35x_unregister_gpio(struct uart_8250_port *port)
 	port->port.private_data = NULL;
 }

-static int generic_rs485_config(struct uart_port *port, struct ktermios *termios,
-				struct serial_rs485 *rs485)
-{
-	bool is_rs485 = !!(rs485->flags & SER_RS485_ENABLED);
-	u8 __iomem *p = port->membase;
-	u8 value;
-
-	value = readb(p + UART_EXAR_FCTR);
-	if (is_rs485)
-		value |= UART_FCTR_EXAR_485;
-	else
-		value &= ~UART_FCTR_EXAR_485;
-
-	writeb(value, p + UART_EXAR_FCTR);
-
-	if (is_rs485)
-		writeb(UART_EXAR_RS485_DLY(4), p + UART_MSR);
-
-	return 0;
-}
-
 static int sealevel_rs485_config(struct uart_port *port, struct ktermios *termios,
 				  struct serial_rs485 *rs485)
 {
@@ -518,10 +522,6 @@ static int sealevel_rs485_config(struct uart_port *port, struct ktermios *termio
 	return 0;
 }

-static const struct serial_rs485 generic_rs485_supported = {
-	.flags = SER_RS485_ENABLED | SER_RS485_RTS_ON_SEND,
-};
-
 static const struct exar8250_platform exar8250_default_platform = {
 	.register_gpio = xr17v35x_register_gpio,
 	.unregister_gpio = xr17v35x_unregister_gpio,
--
2.43.2