diff options
| -rw-r--r-- | drivers/tty/serial/ar933x_uart.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/tty/serial/ar933x_uart.c b/drivers/tty/serial/ar933x_uart.c index 6269dbf93546..ab2c5b2a1ce8 100644 --- a/drivers/tty/serial/ar933x_uart.c +++ b/drivers/tty/serial/ar933x_uart.c @@ -702,6 +702,11 @@ static struct uart_driver ar933x_uart_driver = { .cons = NULL, /* filled in runtime */ }; +static const struct serial_rs485 ar933x_no_rs485 = {}; +static const struct serial_rs485 ar933x_rs485_supported = { + .flags = SER_RS485_ENABLED | SER_RS485_RTS_ON_SEND | SER_RS485_RTS_AFTER_SEND, +}; + static int ar933x_uart_probe(struct platform_device *pdev) { struct ar933x_uart_port *up; @@ -773,6 +778,7 @@ static int ar933x_uart_probe(struct platform_device *pdev) port->fifosize = AR933X_UART_FIFO_SIZE; port->ops = &ar933x_uart_ops; port->rs485_config = ar933x_config_rs485; + port->rs485_supported = &ar933x_rs485_supported; baud = ar933x_uart_get_baud(port->uartclk, AR933X_UART_MAX_SCALE, 1); up->min_baud = max_t(unsigned int, baud, AR933X_UART_MIN_BAUD); @@ -796,6 +802,7 @@ static int ar933x_uart_probe(struct platform_device *pdev) !up->rts_gpiod) { dev_err(&pdev->dev, "lacking rts-gpio, disabling RS485\n"); port->rs485.flags &= ~SER_RS485_ENABLED; + port->rs485_supported = &ar933x_no_rs485; } #ifdef CONFIG_SERIAL_AR933X_CONSOLE |