Commit 43ee3413 authored by Ilpo Järvinen's avatar Ilpo Järvinen Committed by Greg Kroah-Hartman
Browse files

serial: 8250: Create serial8250_em485_supported for em485 users 



Create serial8250_em485_supported for the serial_rs485 features
supported by the em485 framework.

Signed-off-by: default avatarIlpo Järvinen <ilpo.jarvinen@linux.intel.com>
Link: https://lore.kernel.org/r/20220606100433.13793-5-ilpo.jarvinen@linux.intel.com


Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 8925c31c

drivers/tty/serial/8250/8250.h

+1 −0
Original line number Diff line number Diff line
@@ -207,6 +207,7 @@ int serial8250_em485_config(struct uart_port *port, struct serial_rs485 *rs485); 
void serial8250_em485_start_tx(struct uart_8250_port *p);

void serial8250_em485_stop_tx(struct uart_8250_port *p);

void serial8250_em485_destroy(struct uart_8250_port *p);

extern struct serial_rs485 serial8250_em485_supported;



/* MCR <-> TIOCM conversion */

static inline int serial8250_TIOCM_to_MCR(int tiocm)

drivers/tty/serial/8250/8250_port.c

+8 −0
Original line number Diff line number Diff line
@@ -647,6 +647,14 @@ void serial8250_em485_destroy(struct uart_8250_port *p) 
}

EXPORT_SYMBOL_GPL(serial8250_em485_destroy);



struct serial_rs485 serial8250_em485_supported = {

	.flags = SER_RS485_ENABLED | SER_RS485_RTS_ON_SEND | SER_RS485_RTS_AFTER_SEND |

		 SER_RS485_TERMINATE_BUS | SER_RS485_RX_DURING_TX,

	.delay_rts_before_send = 1,

	.delay_rts_after_send = 1,

};

EXPORT_SYMBOL_GPL(serial8250_em485_supported);



/**

 * serial8250_em485_config() - generic ->rs485_config() callback

 * @port: uart port