From fde496c482bc33d0c0a3e6538d8a7f8e44dee968 Mon Sep 17 00:00:00 2001 From: Giulio Benetti Date: Wed, 6 Jun 2018 11:51:51 +0200 Subject: [PATCH 7/7] serial: 8250_dw: allow enable rs485 at boot time 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 Signed-off-by: Heiko Stuebner --- drivers/tty/serial/8250/8250_dw.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/tty/serial/8250/8250_dw.c b/drivers/tty/serial/8250/8250_dw.c index 7023b656658d..c771faeaa260 100644 --- a/drivers/tty/serial/8250/8250_dw.c +++ b/drivers/tty/serial/8250/8250_dw.c @@ -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) + 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) { -- 2.24.1