From: Kevin Cernekee <cernekee@gmail.com>
To: gregkh@linuxfoundation.org, jslaby@suse.cz, robh@kernel.org,
grant.likely@linaro.org
Cc: arnd@arndb.de, peter@hurleysoftware.com, f.fainelli@gmail.com,
linux-serial@vger.kernel.org, devicetree@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: [PATCH V4 5/5] serial: of_serial: Support big-endian register accesses
Date: Thu, 9 Apr 2015 13:05:18 -0700 [thread overview]
Message-ID: <1428609918-10290-6-git-send-email-cernekee@gmail.com> (raw)
In-Reply-To: <1428609918-10290-1-git-send-email-cernekee@gmail.com>
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@gmail.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
next prev parent reply other threads:[~2015-04-09 20:05 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-04-09 20:05 [PATCH V4 0/5] Add big-endian MMIO support to serial8250 Kevin Cernekee
[not found] ` <1428609918-10290-1-git-send-email-cernekee-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2015-04-09 20:05 ` [PATCH V4 1/5] of: Add helper function to check MMIO register endianness Kevin Cernekee
2015-04-09 20:05 ` [PATCH V4 2/5] of/fdt: Add endianness helper function for early init code Kevin Cernekee
2015-04-09 20:05 ` [PATCH V4 3/5] of: Document {little,big,native}-endian bindings Kevin Cernekee
2015-04-09 20:05 ` [PATCH V4 4/5] serial: 8250: Add support for big-endian MMIO accesses Kevin Cernekee
2015-04-09 20:05 ` Kevin Cernekee [this message]
2015-04-10 13:52 ` [PATCH V4 0/5] Add big-endian MMIO support to serial8250 Rob Herring
[not found] ` <CAL_Jsq+-Yr3oB2=7X2a9XDU_-b+08WfJRJUqVsCHAaQEQxQ1Mg-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2015-04-10 14:28 ` Peter Hurley
2015-04-13 17:09 ` Greg Kroah-Hartman
[not found] ` <20150413170912.GA802-U8xfFu+wG4EAvxtiuMwx3w@public.gmane.org>
2015-04-15 12:51 ` Rob Herring
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