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Date: Wed, 8 Oct 2014 21:57:37 +0200
From: Ricardo Ribalda Delgado <ricardo.ribalda@...il.com>
To: One Thousand Gnomes <gnomes@...rguk.ukuu.org.uk>,
Alan Cox <alan@...ux.intel.com>, linux-serial@...r.kernel.org
Cc: Ricardo Ribalda Delgado <ricardo.ribalda@...il.com>,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
Jiri Slaby <jslaby@...e.cz>, linux-kernel@...r.kernel.org
Subject: [PATCH 11/12] drivers/max310: Use the rs485 functions on serial_core
In order to unify all the rs485 ioctl handling
Use the implementation of TIOC[GS]RS485 ioctl handling on serial_core.
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc: Jiri Slaby <jslaby@...e.cz>
Cc: linux-serial@...r.kernel.org
Cc: linux-kernel@...r.kernel.org
Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@...il.com>
---
drivers/tty/serial/max310x.c | 70 +++++++++++++++++---------------------------
1 file changed, 27 insertions(+), 43 deletions(-)
diff --git a/drivers/tty/serial/max310x.c b/drivers/tty/serial/max310x.c
index 670aba4..5ad9713 100644
--- a/drivers/tty/serial/max310x.c
+++ b/drivers/tty/serial/max310x.c
@@ -874,53 +874,37 @@ static void max310x_set_termios(struct uart_port *port,
uart_update_timeout(port, termios->c_cflag, baud);
}
-static int max310x_ioctl(struct uart_port *port, unsigned int cmd,
- unsigned long arg)
+static int max310x_rs485_config(struct uart_port *port,
+ struct serial_rs485 *rs485)
{
- struct serial_rs485 rs485;
unsigned int val;
- switch (cmd) {
- case TIOCSRS485:
- if (copy_from_user(&rs485, (void __user *)arg, sizeof(rs485)))
- return -EFAULT;
- if (rs485.delay_rts_before_send > 0x0f ||
- rs485.delay_rts_after_send > 0x0f)
- return -ERANGE;
- val = (rs485.delay_rts_before_send << 4) |
- rs485.delay_rts_after_send;
- max310x_port_write(port, MAX310X_HDPIXDELAY_REG, val);
- if (rs485.flags & SER_RS485_ENABLED) {
- max310x_port_update(port, MAX310X_MODE1_REG,
- MAX310X_MODE1_TRNSCVCTRL_BIT,
- MAX310X_MODE1_TRNSCVCTRL_BIT);
- max310x_port_update(port, MAX310X_MODE2_REG,
- MAX310X_MODE2_ECHOSUPR_BIT,
- MAX310X_MODE2_ECHOSUPR_BIT);
- } else {
- max310x_port_update(port, MAX310X_MODE1_REG,
- MAX310X_MODE1_TRNSCVCTRL_BIT, 0);
- max310x_port_update(port, MAX310X_MODE2_REG,
- MAX310X_MODE2_ECHOSUPR_BIT, 0);
- }
- return 0;
- case TIOCGRS485:
- memset(&rs485, 0, sizeof(rs485));
- val = max310x_port_read(port, MAX310X_MODE1_REG);
- rs485.flags = (val & MAX310X_MODE1_TRNSCVCTRL_BIT) ?
- SER_RS485_ENABLED : 0;
- rs485.flags |= SER_RS485_RTS_ON_SEND;
- val = max310x_port_read(port, MAX310X_HDPIXDELAY_REG);
- rs485.delay_rts_before_send = val >> 4;
- rs485.delay_rts_after_send = val & 0x0f;
- if (copy_to_user((void __user *)arg, &rs485, sizeof(rs485)))
- return -EFAULT;
- return 0;
- default:
- break;
+ if (rs485->delay_rts_before_send > 0x0f ||
+ rs485->delay_rts_after_send > 0x0f)
+ return -ERANGE;
+
+ val = (rs485->delay_rts_before_send << 4) |
+ rs485->delay_rts_after_send;
+ max310x_port_write(port, MAX310X_HDPIXDELAY_REG, val);
+ if (rs485->flags & SER_RS485_ENABLED) {
+ max310x_port_update(port, MAX310X_MODE1_REG,
+ MAX310X_MODE1_TRNSCVCTRL_BIT,
+ MAX310X_MODE1_TRNSCVCTRL_BIT);
+ max310x_port_update(port, MAX310X_MODE2_REG,
+ MAX310X_MODE2_ECHOSUPR_BIT,
+ MAX310X_MODE2_ECHOSUPR_BIT);
+ } else {
+ max310x_port_update(port, MAX310X_MODE1_REG,
+ MAX310X_MODE1_TRNSCVCTRL_BIT, 0);
+ max310x_port_update(port, MAX310X_MODE2_REG,
+ MAX310X_MODE2_ECHOSUPR_BIT, 0);
}
- return -ENOIOCTLCMD;
+ rs485->flags &= SER_RS485_RTS_ON_SEND | SER_RS485_ENABLED;
+ memset(rs485->padding, 0, sizeof(rs485->padding));
+ port->rs485 = *rs485;
+
+ return 0;
}
static int max310x_startup(struct uart_port *port)
@@ -1015,7 +999,6 @@ static const struct uart_ops max310x_ops = {
.release_port = max310x_null_void,
.config_port = max310x_config_port,
.verify_port = max310x_verify_port,
- .ioctl = max310x_ioctl,
};
static int __maybe_unused max310x_suspend(struct device *dev)
@@ -1216,6 +1199,7 @@ static int max310x_probe(struct device *dev, struct max310x_devtype *devtype,
s->p[i].port.iobase = i * 0x20;
s->p[i].port.membase = (void __iomem *)~0;
s->p[i].port.uartclk = uartclk;
+ s->p[i].port.rs485_config = max310x_rs485_config;
s->p[i].port.ops = &max310x_ops;
/* Disable all interrupts */
max310x_port_write(&s->p[i].port, MAX310X_IRQEN_REG, 0);
--
2.1.1
--
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