serial: 8250_dw: allow enable rs485 at boot time
From: Giulio Benetti <giulio.benetti@...> Date: Wed, 6 Jun 2018 11:51:51 +0200
Commit-Message
If "linux,rs485-enabled-at-boot-time" is specified need to setup 485 in probe function. Call uart_get_rs485_mode() to get rs485 configuration, then call rs485_config() callback directly to setup port as rs485. Signed-off-by: Giulio Benetti <giulio.benetti@...> Signed-off-by: Heiko Stuebner <heiko.stuebner@...>
Patch-Comment
drivers/tty/serial/8250/8250_dw.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)
Statistics
- 3 lines added
- 1 lines removed
Changes
---------------------- drivers/tty/serial/8250/8250_dw.c -----------------------
index 7023b656658d..c771faeaa260 100644
@@ -550,8 +550,10 @@ static int dw8250_probe(struct platform_device *pdev)
if (data->uart_16550_compatible)
p->handle_irq = NULL;
+ if (!data->skip_autocfg) {
dw8250_setup_port(p);
+ uart_get_rs485_mode(dev, &p->rs485);
+ }
/* If we have a valid fifosize, try hooking up DMA */
if (p->fifosize) {