Commit 62a4b3d2 authored by Ilpo Järvinen's avatar Ilpo Järvinen Committed by Greg Kroah-Hartman
Browse files

serial: 8250_dwlib: Fill in rs485_supported 



Add information on supported serial_rs485 features. When the driver is
using em485, take advantage of serial8250_em485_supported.

Signed-off-by: default avatarIlpo Järvinen <ilpo.jarvinen@linux.intel.com>
Link: https://lore.kernel.org/r/20220606100433.13793-7-ilpo.jarvinen@linux.intel.com


Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 499b1160

drivers/tty/serial/8250/8250_dwlib.c

+7 −0
Original line number Diff line number Diff line
@@ -149,6 +149,11 @@ static bool dw8250_detect_rs485_hw(struct uart_port *p) 
	return reg;

}



static const struct serial_rs485 dw8250_rs485_supported = {

	.flags = SER_RS485_ENABLED | SER_RS485_RX_DURING_TX | SER_RS485_RTS_ON_SEND |

		 SER_RS485_RTS_AFTER_SEND,

};



void dw8250_setup_port(struct uart_port *p)

{

	struct dw8250_port_data *pd = p->private_data;
@@ -159,8 +164,10 @@ void dw8250_setup_port(struct uart_port *p) 
	pd->hw_rs485_support = dw8250_detect_rs485_hw(p);

	if (pd->hw_rs485_support) {

		p->rs485_config = dw8250_rs485_config;

		p->rs485_supported = &dw8250_rs485_supported;

	} else {

		p->rs485_config = serial8250_em485_config;

		p->rs485_supported = &serial8250_em485_supported;

		up->rs485_start_tx = serial8250_em485_start_tx;

		up->rs485_stop_tx = serial8250_em485_stop_tx;

	}