linux-kernel - [PATCH v9 08/10] serial: sc16is7xx: add call to get rs485 DT flags and properties

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Message-Id: <20230725142343.1724130-9-hugo@hugovil.com>
Date:   Tue, 25 Jul 2023 10:23:40 -0400
From:   Hugo Villeneuve <hugo@...ovil.com>
To:     gregkh@...uxfoundation.org, robh+dt@...nel.org,
        krzysztof.kozlowski+dt@...aro.org, conor+dt@...nel.org,
        jirislaby@...nel.org, jringle@...dpoint.com,
        isaac.true@...onical.com, jesse.sung@...onical.com,
        l.perczak@...lintechnologies.com, tomasz.mon@...lingroup.com
Cc:     linux-serial@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, hugo@...ovil.com,
        linux-gpio@...r.kernel.org,
        Hugo Villeneuve <hvilleneuve@...onoff.com>,
        Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>,
        Lech Perczak <lech.perczak@...lingroup.com>
Subject: [PATCH v9 08/10] serial: sc16is7xx: add call to get rs485 DT flags and properties

From: Hugo Villeneuve <hvilleneuve@...onoff.com>

Add call to uart_get_rs485_mode() to probe for RS485 flags and
properties from device tree.

Signed-off-by: Hugo Villeneuve <hvilleneuve@...onoff.com>
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>
Reviewed-by: Lech Perczak <lech.perczak@...lingroup.com>
Tested-by: Lech Perczak <lech.perczak@...lingroup.com>
---
 drivers/tty/serial/sc16is7xx.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/tty/serial/sc16is7xx.c b/drivers/tty/serial/sc16is7xx.c
index 07ae889db296..49213be60baf 100644
--- a/drivers/tty/serial/sc16is7xx.c
+++ b/drivers/tty/serial/sc16is7xx.c
@@ -1549,6 +1549,10 @@ static int sc16is7xx_probe(struct device *dev,
 			goto out_ports;
 		}
 
+		ret = uart_get_rs485_mode(&s->p[i].port);
+		if (ret)
+			goto out_ports;
+
 		/* Disable all interrupts */
 		sc16is7xx_port_write(&s->p[i].port, SC16IS7XX_IER_REG, 0);
 		/* Disable TX/RX */
-- 
2.30.2