Add information on supported serial_rs485 features.
Differentiate based on which port is in question.
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@xxxxxxxxxxxxxxx>
---
drivers/tty/serial/8250/8250_fintek.c | 15 +++++++++++++++
1 file changed, 15 insertions(+)
diff --git a/drivers/tty/serial/8250/8250_fintek.c b/drivers/tty/serial/8250/8250_fintek.c
index dba5950b8d0e..6e98c376e082 100644
--- a/drivers/tty/serial/8250/8250_fintek.c
+++ b/drivers/tty/serial/8250/8250_fintek.c
@@ -424,6 +424,17 @@ static int probe_setup_port(struct fintek_8250 *pdata,
return -ENODEV;
}
+/* Only the first port supports delays */
+static const struct serial_rs485 fintek_8250_rs485_supported_port0 = {
+ .flags = SER_RS485_ENABLED | SER_RS485_RTS_ON_SEND | SER_RS485_RTS_AFTER_SEND,
+ .delay_rts_before_send = 1,
+ .delay_rts_after_send = 1,
+};
+
+static const struct serial_rs485 fintek_8250_rs485_supported = {
+ .flags = SER_RS485_ENABLED | SER_RS485_RTS_ON_SEND | SER_RS485_RTS_AFTER_SEND,
+};
+
static void fintek_8250_set_rs485_handler(struct uart_8250_port *uart)
{
struct fintek_8250 *pdata = uart->port.private_data;
@@ -435,6 +446,10 @@ static void fintek_8250_set_rs485_handler(struct uart_8250_port *uart)
case CHIP_ID_F81866:
case CHIP_ID_F81865:
uart->port.rs485_config = fintek_8250_rs485_config;
+ if (!pdata->index)
+ uart->port.rs485_supported = &fintek_8250_rs485_supported_port0;
+ else
+ uart->port.rs485_supported = &fintek_8250_rs485_supported;
break;
default: /* No RS485 Auto direction functional */
--
2.30.2
