diff mbox series

[2/2] serial: RS485 termination is supported if DT provides one

Message ID 20220704094515.6831-3-ilpo.jarvinen@linux.intel.com
State New
Headers show
Series serial: RS485 termination improvements | expand

Commit Message

Ilpo Järvinen July 4, 2022, 9:45 a.m. UTC 
When DT provides rs485-term, set termination flag as supported.

Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
---
 drivers/tty/serial/serial_core.c | 2 ++
 1 file changed, 2 insertions(+)

Comments

Lino Sanfilippo July 5, 2022, 10:27 a.m. UTC | #1 
On 04.07.22 11:45, Ilpo Järvinen wrote:
> When DT provides rs485-term, set termination flag as supported.
>
> Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
> ---
>  drivers/tty/serial/serial_core.c | 2 ++
>  1 file changed, 2 insertions(+)
>
> diff --git a/drivers/tty/serial/serial_core.c b/drivers/tty/serial/serial_core.c
> index a9cf1044a9fa..1db44cde76f6 100644
> --- a/drivers/tty/serial/serial_core.c
> +++ b/drivers/tty/serial/serial_core.c
> @@ -3409,6 +3409,8 @@ int uart_get_rs485_mode(struct uart_port *port)
>  		port->rs485_term_gpio = NULL;
>  		return dev_err_probe(dev, ret, "Cannot get rs485-term-gpios\n");
>  	}
> +	if (port->rs485_term_gpio)
> +		port->rs485_supported.flags |= SER_RS485_TERMINATE_BUS;
>
>  	return 0;
>  }


FWIW:
Reviewed-by: Lino Sanfilippo <l.sanfilippo@kunbus.com>


Regards,
Lino
diff mbox series

Patch

diff --git a/drivers/tty/serial/serial_core.c b/drivers/tty/serial/serial_core.c
index a9cf1044a9fa..1db44cde76f6 100644
--- a/drivers/tty/serial/serial_core.c
+++ b/drivers/tty/serial/serial_core.c
@@ -3409,6 +3409,8 @@  int uart_get_rs485_mode(struct uart_port *port)
 		port->rs485_term_gpio = NULL;
 		return dev_err_probe(dev, ret, "Cannot get rs485-term-gpios\n");
 	}
+	if (port->rs485_term_gpio)
+		port->rs485_supported.flags |= SER_RS485_TERMINATE_BUS;
 
 	return 0;
 }