From c267d679cfd9699b9349fd714f63f6b4ee59dda2 Mon Sep 17 00:00:00 2001 From: Ricardo Ribalda Delgado Date: Thu, 6 Nov 2014 09:22:58 +0100 Subject: [PATCH] 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. Reviewed-by: Alan Cox Cc: Jiri Slaby Signed-off-by: Ricardo Ribalda Delgado Signed-off-by: Greg Kroah-Hartman --- 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 ecb466701ede..182549f55904 100644 --- a/drivers/tty/serial/max310x.c +++ b/drivers/tty/serial/max310x.c @@ -877,53 +877,37 @@ 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) @@ -1018,7 +1002,6 @@ 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) @@ -1219,6 +1202,7 @@ 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);