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@xxxxxxxxxxxxxxx>
---
drivers/tty/serial/8250/8250_dwlib.c | 7 +++++++
1 file changed, 7 insertions(+)
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;
}
--
2.30.2
