diff options
| author | Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> | 2022-06-06 13:04:03 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-06-10 13:49:25 +0200 |
| commit | 62a4b3d274192c845cde4e885bfa7c2bedf18330 (patch) | |
| tree | 32e0b3f719f02a69314cca471d15860949d07cc1 /drivers/tty/serial/8250 | |
| parent | 499b1160bc026eb7774bcf5b82b9e0ec2f6ae0be (diff) | |
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: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Link: https://lore.kernel.org/r/20220606100433.13793-7-ilpo.jarvinen@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/tty/serial/8250')
| -rw-r--r-- | drivers/tty/serial/8250/8250_dwlib.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/tty/serial/8250/8250_dwlib.c b/drivers/tty/serial/8250/8250_dwlib.c index fbabfdd8c7b8..120b29519d74 100644 --- a/drivers/tty/serial/8250/8250_dwlib.c +++ b/drivers/tty/serial/8250/8250_dwlib.c @@ -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; } |