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Message-Id: <1428609918-10290-6-git-send-email-cernekee@gmail.com>
Date: Thu, 9 Apr 2015 13:05:18 -0700
From: Kevin Cernekee <cernekee@...il.com>
To: gregkh@...uxfoundation.org, jslaby@...e.cz, robh@...nel.org,
grant.likely@...aro.org
Cc: arnd@...db.de, peter@...leysoftware.com, f.fainelli@...il.com,
linux-serial@...r.kernel.org, devicetree@...r.kernel.org,
linux-kernel@...r.kernel.org
Subject: [PATCH V4 5/5] serial: of_serial: Support big-endian register accesses
If the device node has a "big-endian" property and 32-bit registers, tell
the serial driver to use UPIO_MEM32BE instead of UPIO_MEM32.
Signed-off-by: Kevin Cernekee <cernekee@...il.com>
---
drivers/tty/serial/of_serial.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/tty/serial/of_serial.c b/drivers/tty/serial/of_serial.c
index 33fb94f78967..e15c443b2a3c 100644
--- a/drivers/tty/serial/of_serial.c
+++ b/drivers/tty/serial/of_serial.c
@@ -115,7 +115,8 @@ static int of_platform_serial_setup(struct platform_device *ofdev,
port->iotype = UPIO_MEM;
break;
case 4:
- port->iotype = UPIO_MEM32;
+ port->iotype = of_device_is_big_endian(np) ?
+ UPIO_MEM32BE : UPIO_MEM32;
break;
default:
dev_warn(&ofdev->dev, "unsupported reg-io-width (%d)\n",
--
2.2.2
--
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