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| author | Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> | 2022-06-06 13:04:01 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-06-10 13:49:24 +0200 |
| commit | 43ee34131cedca95c413b5e6203f4545309d2450 (patch) | |
| tree | 128ce36ea3bf5b66915af173a8c169f689bb0e4d /drivers | |
| parent | 8925c31c1ac2f1e05da988581f2a70a2a8c4d638 (diff) | |
| download | linux-stable-43ee34131cedca95c413b5e6203f4545309d2450.tar.gz linux-stable-43ee34131cedca95c413b5e6203f4545309d2450.tar.bz2 linux-stable-43ee34131cedca95c413b5e6203f4545309d2450.zip | |
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 <ilpo.jarvinen@linux.intel.com>
Link: https://lore.kernel.org/r/20220606100433.13793-5-ilpo.jarvinen@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/tty/serial/8250/8250.h | 1 | ||||
| -rw-r--r-- | drivers/tty/serial/8250/8250_port.c | 8 |
2 files changed, 9 insertions, 0 deletions
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 |