serial: pl011: Fill in rs485_supported

Add information on supported serial_rs485 features.

Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Link: https://lore.kernel.org/r/20220606100433.13793-13-ilpo.jarvinen@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/tty/serial/amba-pl011.c b/drivers/tty/serial/amba-pl011.c
index 97ef41c..cdc466e 100644 (file)
--- a/drivers/tty/serial/amba-pl011.c
+++ b/drivers/tty/serial/amba-pl011.c
@@ -2751,6 +2751,13 @@ static int pl011_register_port(struct uart_amba_port *uap)
        return ret;
 }
 
+static const struct serial_rs485 pl011_rs485_supported = {
+       .flags = SER_RS485_ENABLED | SER_RS485_RTS_ON_SEND | SER_RS485_RTS_AFTER_SEND |
+                SER_RS485_RX_DURING_TX,
+       .delay_rts_before_send = 1,
+       .delay_rts_after_send = 1,
+};
+
 static int pl011_probe(struct amba_device *dev, const struct amba_id *id)
 {
        struct uart_amba_port *uap;
@@ -2777,6 +2784,7 @@ static int pl011_probe(struct amba_device *dev, const struct amba_id *id)
        uap->port.irq = dev->irq[0];
        uap->port.ops = &amba_pl011_pops;
        uap->port.rs485_config = pl011_rs485_config;
+       uap->port.rs485_supported = &pl011_rs485_supported;
        snprintf(uap->type, sizeof(uap->type), "PL011 rev%u", amba_rev(dev));
 
        ret = pl011_setup_port(&dev->dev, uap, &dev->res, portnr);