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Message-Id: <20180601124021.102970-3-giulio.benetti@micronovasrl.com>
Date: Fri, 1 Jun 2018 14:40:15 +0200
From: Giulio Benetti <giulio.benetti@...ronovasrl.com>
To: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc: Jiri Slaby <jslaby@...e.com>,
Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
Kees Cook <keescook@...omium.org>,
Matthias Brugger <mbrugger@...e.com>,
Allen Pais <allen.lkml@...il.com>, Sean Young <sean@...s.org>,
Ed Blake <ed.blake@...drel.com>,
Stefan Potyra <Stefan.Potyra@...ktrobit.com>,
Philipp Zabel <p.zabel@...gutronix.de>,
Joshua Scott <joshua.scott@...iedtelesis.co.nz>,
Vignesh R <vigneshr@...com>,
Rolf Evers-Fischer <rolf.evers.fischer@...iv.com>,
Aaron Sierra <asierra@...-inc.com>,
Rafael Gago <rafael.gago@...il.com>,
Joel Stanley <joel@....id.au>,
Sean Wang <sean.wang@...iatek.com>,
linux-serial@...r.kernel.org, linux-kernel@...r.kernel.org,
Giulio Benetti <giulio.benetti@...ronovasrl.com>
Subject: [PATCH 2/8] 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 <giulio.benetti@...ronovasrl.com>
---
drivers/tty/serial/8250/8250_dw.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/drivers/tty/serial/8250/8250_dw.c b/drivers/tty/serial/8250/8250_dw.c
index 45366e6e5411..0f8b4da03d4e 100644
--- a/drivers/tty/serial/8250/8250_dw.c
+++ b/drivers/tty/serial/8250/8250_dw.c
@@ -582,8 +582,11 @@ 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);
+ dw8250_rs485_config(p, &p->rs485);
+ }
/* If we have a valid fifosize, try hooking up DMA */
if (p->fifosize) {
--
2.17.0
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