From: Giulio Benetti <[email protected]>

Need to use rs485 transceiver so let's use existing em485 485 emulation
layer on top of 8250.

Add rs485_config callback to port and uses the standard em485 start and
stop helpers.

Signed-off-by: Giulio Benetti <[email protected]>
[moved to use newly added start/stop helpers]
Signed-off-by: Heiko Stuebner <[email protected]>
---
 drivers/tty/serial/8250/8250_dw.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/tty/serial/8250/8250_dw.c 
b/drivers/tty/serial/8250/8250_dw.c
index 51a7d3b19b39..36d364268a45 100644
--- a/drivers/tty/serial/8250/8250_dw.c
+++ b/drivers/tty/serial/8250/8250_dw.c
@@ -415,6 +415,9 @@ static int dw8250_probe(struct platform_device *pdev)
        p->serial_out   = dw8250_serial_out;
        p->set_ldisc    = dw8250_set_ldisc;
        p->set_termios  = dw8250_set_termios;
+       p->rs485_config = serial8250_em485_config;
+       up->rs485_start_tx = serial8250_em485_start_tx;
+       up->rs485_stop_tx = serial8250_em485_stop_tx;
 
        p->membase = devm_ioremap(dev, regs->start, resource_size(regs));
        if (!p->membase)
-- 
2.25.1

Reply via email to