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 <alan@xxxxxxxxxxxxxxx>
Cc: Nicolas Ferre <nicolas.ferre@xxxxxxxxx>
Cc: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Cc: Jiri Slaby <jslaby@xxxxxxx>
Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@xxxxxxxxx>
---
drivers/tty/serial/atmel_serial.c | 79 ++++++++++++---------------------------
1 file changed, 24 insertions(+), 55 deletions(-)
diff --git a/drivers/tty/serial/atmel_serial.c b/drivers/tty/serial/atmel_serial.c
index 8a84034..ab33a53 100644
--- a/drivers/tty/serial/atmel_serial.c
+++ b/drivers/tty/serial/atmel_serial.c
@@ -167,7 +167,6 @@ struct atmel_uart_port {
struct circ_buf rx_ring;
- struct serial_rs485 rs485; /* rs485 settings */
struct mctrl_gpios *gpios;
int gpio_irq[UART_GPIO_MAX];
unsigned int tx_done_mask;
@@ -290,7 +289,8 @@ static unsigned int atmel_get_lines_status(struct uart_port *port)
}
/* Enable or disable the rs485 support */
-void atmel_config_rs485(struct uart_port *port, struct serial_rs485 *rs485conf)
+static int atmel_config_rs485(struct uart_port *port,
+ struct serial_rs485 *rs485conf)
{
struct atmel_uart_port *atmel_port = to_atmel_uart_port(port);
unsigned int mode;
@@ -306,7 +306,7 @@ void atmel_config_rs485(struct uart_port *port, struct serial_rs485 *rs485conf)
/* Resetting serial mode to RS232 (0x0) */
mode &= ~ATMEL_US_USMODE;
- atmel_port->rs485 = *rs485conf;
+ port->rs485 = *rs485conf;
if (rs485conf->flags & SER_RS485_ENABLED) {
dev_dbg(port->dev, "Setting UART to RS485\n");
@@ -329,6 +329,7 @@ void atmel_config_rs485(struct uart_port *port, struct serial_rs485 *rs485conf)
spin_unlock_irqrestore(&port->lock, flags);
+ return 0;
}
/*
@@ -372,11 +373,10 @@ static void atmel_set_mctrl(struct uart_port *port, u_int mctrl)
/* Resetting serial mode to RS232 (0x0) */
mode &= ~ATMEL_US_USMODE;
- if (atmel_port->rs485.flags & SER_RS485_ENABLED) {
+ if (port->rs485.flags & SER_RS485_ENABLED) {
dev_dbg(port->dev, "Setting UART to RS485\n");
- if ((atmel_port->rs485.delay_rts_after_send) > 0)
- UART_PUT_TTGR(port,
- atmel_port->rs485.delay_rts_after_send);
+ if ((port->rs485.delay_rts_after_send) > 0)
+ UART_PUT_TTGR(port, port->rs485.delay_rts_after_send);
mode |= ATMEL_US_USMODE_RS485;
} else {
dev_dbg(port->dev, "Setting UART to RS232\n");
@@ -423,8 +423,8 @@ static void atmel_stop_tx(struct uart_port *port)
/* Disable interrupts */
UART_PUT_IDR(port, atmel_port->tx_done_mask);
- if ((atmel_port->rs485.flags & SER_RS485_ENABLED) &&
- !(atmel_port->rs485.flags & SER_RS485_RX_DURING_TX))
+ if ((port->rs485.flags & SER_RS485_ENABLED) &&
+ !(port->rs485.flags & SER_RS485_RX_DURING_TX))
atmel_start_rx(port);
}
@@ -441,8 +441,8 @@ static void atmel_start_tx(struct uart_port *port)
really need this.*/
return;
- if ((atmel_port->rs485.flags & SER_RS485_ENABLED) &&
- !(atmel_port->rs485.flags & SER_RS485_RX_DURING_TX))
+ if ((port->rs485.flags & SER_RS485_ENABLED) &&
+ !(port->rs485.flags & SER_RS485_RX_DURING_TX))
atmel_stop_rx(port);
/* re-enable PDC transmit */
@@ -807,7 +807,7 @@ static void atmel_tx_dma(struct uart_port *port)
atmel_port->cookie_tx = dmaengine_submit(desc);
} else {
- if (atmel_port->rs485.flags & SER_RS485_ENABLED) {
+ if (port->rs485.flags & SER_RS485_ENABLED) {
/* DMA done, stop TX, start RX for RS485 */
atmel_start_rx(port);
}
@@ -1240,8 +1240,8 @@ static void atmel_tx_pdc(struct uart_port *port)
/* Enable interrupts */
UART_PUT_IER(port, atmel_port->tx_done_mask);
} else {
- if ((atmel_port->rs485.flags & SER_RS485_ENABLED) &&
- !(atmel_port->rs485.flags & SER_RS485_RX_DURING_TX)) {
+ if ((port->rs485.flags & SER_RS485_ENABLED) &&
+ !(port->rs485.flags & SER_RS485_RX_DURING_TX)) {
/* DMA done, stop TX, start RX for RS485 */
atmel_start_rx(port);
}
@@ -1552,7 +1552,7 @@ static int atmel_init_property(struct atmel_uart_port *atmel_port,
return 0;
}
-static void atmel_init_rs485(struct atmel_uart_port *atmel_port,
+static void atmel_init_rs485(struct uart_port *port,
struct platform_device *pdev)
{
struct device_node *np = pdev->dev.of_node;
@@ -1563,7 +1563,7 @@ static void atmel_init_rs485(struct atmel_uart_port *atmel_port,
/* rs485 properties */
if (of_property_read_u32_array(np, "rs485-rts-delay",
rs485_delay, 2) == 0) {
- struct serial_rs485 *rs485conf = &atmel_port->rs485;
+ struct serial_rs485 *rs485conf = &port->rs485;
rs485conf->delay_rts_before_send = rs485_delay[0];
rs485conf->delay_rts_after_send = rs485_delay[1];
@@ -1577,7 +1577,7 @@ static void atmel_init_rs485(struct atmel_uart_port *atmel_port,
rs485conf->flags |= SER_RS485_ENABLED;
}
} else {
- atmel_port->rs485 = pdata->rs485;
+ port->rs485 = pdata->rs485;
}
}
@@ -1913,7 +1913,6 @@ static void atmel_set_termios(struct uart_port *port, struct ktermios *termios,
{
unsigned long flags;
unsigned int mode, imr, quot, baud;
- struct atmel_uart_port *atmel_port = to_atmel_uart_port(port);
/* Get current mode register */
mode = UART_GET_MR(port) & ~(ATMEL_US_USCLKS | ATMEL_US_CHRL
@@ -2015,10 +2014,9 @@ static void atmel_set_termios(struct uart_port *port, struct ktermios *termios,
/* Resetting serial mode to RS232 (0x0) */
mode &= ~ATMEL_US_USMODE;
- if (atmel_port->rs485.flags & SER_RS485_ENABLED) {
- if ((atmel_port->rs485.delay_rts_after_send) > 0)
- UART_PUT_TTGR(port,
- atmel_port->rs485.delay_rts_after_send);
+ if (port->rs485.flags & SER_RS485_ENABLED) {
+ if ((port->rs485.delay_rts_after_send) > 0)
+ UART_PUT_TTGR(port, port->rs485.delay_rts_after_send);
mode |= ATMEL_US_USMODE_RS485;
}
@@ -2150,35 +2148,6 @@ static void atmel_poll_put_char(struct uart_port *port, unsigned char ch)
}
#endif
-static int
-atmel_ioctl(struct uart_port *port, unsigned int cmd, unsigned long arg)
-{
- struct serial_rs485 rs485conf;
-
- switch (cmd) {
- case TIOCSRS485:
- if (copy_from_user(&rs485conf, (struct serial_rs485 *) arg,
- sizeof(rs485conf)))
- return -EFAULT;
-
- atmel_config_rs485(port, &rs485conf);
- break;
-
- case TIOCGRS485:
- if (copy_to_user((struct serial_rs485 *) arg,
- &(to_atmel_uart_port(port)->rs485),
- sizeof(rs485conf)))
- return -EFAULT;
- break;
-
- default:
- return -ENOIOCTLCMD;
- }
- return 0;
-}
-
-
-
static struct uart_ops atmel_pops = {
.tx_empty = atmel_tx_empty,
.set_mctrl = atmel_set_mctrl,
@@ -2199,7 +2168,6 @@ static struct uart_ops atmel_pops = {
.config_port = atmel_config_port,
.verify_port = atmel_verify_port,
.pm = atmel_serial_pm,
- .ioctl = atmel_ioctl,
#ifdef CONFIG_CONSOLE_POLL
.poll_get_char = atmel_poll_get_char,
.poll_put_char = atmel_poll_put_char,
@@ -2219,7 +2187,7 @@ static int atmel_init_port(struct atmel_uart_port *atmel_port,
if (!atmel_init_property(atmel_port, pdev))
atmel_set_ops(port);
- atmel_init_rs485(atmel_port, pdev);
+ atmel_init_rs485(port, pdev);
port->iotype = UPIO_MEM;
port->flags = UPF_BOOT_AUTOCONF;
@@ -2228,6 +2196,7 @@ static int atmel_init_port(struct atmel_uart_port *atmel_port,
port->dev = &pdev->dev;
port->mapbase = pdev->resource[0].start;
port->irq = pdev->resource[1].start;
+ port->rs485_config = atmel_config_rs485;
tasklet_init(&atmel_port->tasklet, atmel_tasklet_func,
(unsigned long)port);
@@ -2262,7 +2231,7 @@ static int atmel_init_port(struct atmel_uart_port *atmel_port,
}
/* Use TXEMPTY for interrupt when rs485 else TXRDY or ENDTX|TXBUFE */
- if (atmel_port->rs485.flags & SER_RS485_ENABLED)
+ if (port->rs485.flags & SER_RS485_ENABLED)
atmel_port->tx_done_mask = ATMEL_US_TXEMPTY;
else if (atmel_use_pdc_tx(port)) {
port->fifosize = PDC_BUFFER_SIZE;
@@ -2608,7 +2577,7 @@ static int atmel_serial_probe(struct platform_device *pdev)
device_init_wakeup(&pdev->dev, 1);
platform_set_drvdata(pdev, port);
- if (port->rs485.flags & SER_RS485_ENABLED) {
+ if (port->uart.rs485.flags & SER_RS485_ENABLED) {
UART_PUT_MR(&port->uart, ATMEL_US_USMODE_NORMAL);
UART_PUT_CR(&port->uart, ATMEL_US_RTSEN);
}
--
2.1.1
--
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