From: Ilpo Järvinen Date: Mon, 6 Jun 2022 10:04:01 +0000 (+0300) Subject: serial: 8250: Create serial8250_em485_supported for em485 users X-Git-Tag: v6.0-rc1~64^2~127 X-Git-Url: https://git.kernel.dk/?a=commitdiff_plain;h=43ee34131cedca95c413b5e6203f4545309d2450;p=linux-block.git 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: Ilpo Järvinen Link: https://lore.kernel.org/r/20220606100433.13793-5-ilpo.jarvinen@linux.intel.com Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/tty/serial/8250/8250.h b/drivers/tty/serial/8250/8250.h index c89cb881d9b0..b120da57c61f 100644 --- a/drivers/tty/serial/8250/8250.h +++ b/drivers/tty/serial/8250/8250.h @@ -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) diff --git a/drivers/tty/serial/8250/8250_port.c b/drivers/tty/serial/8250/8250_port.c index af550a4a27f8..65a60e4808ea 100644 --- a/drivers/tty/serial/8250/8250_port.c +++ b/drivers/tty/serial/8250/8250_port.c @@ -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