From: Masahiro Yamada <yamada.masahiro@socionext.com>
To: Greg KH <gregkh@linuxfoundation.org>, linux-serial@vger.kernel.org
Cc: devicetree@vger.kernel.org, Rob Herring <robh+dt@kernel.org>,
Dai Okamura <okamura.dai@socionext.com>,
Masahiro Yamada <yamada.masahiro@socionext.com>,
Jiri Slaby <jslaby@suse.com>,
linux-kernel@vger.kernel.org, Mark Rutland <mark.rutland@arm.com>,
linux-arm-kernel@lists.infradead.org
Subject: [PATCH 3/3] serial: 8250_uniphier: add auto-flow-control support
Date: Wed, 19 Sep 2018 14:28:13 +0900 [thread overview]
Message-ID: <1537334893-26079-4-git-send-email-yamada.masahiro@socionext.com> (raw)
In-Reply-To: <1537334893-26079-1-git-send-email-yamada.masahiro@socionext.com>
From: Dai Okamura <okamura.dai@socionext.com>
Add selective auto-flow-control support for UniPhier serial driver.
Signed-off-by: Dai Okamura <okamura.dai@socionext.com>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
---
Documentation/devicetree/bindings/serial/uniphier-uart.txt | 3 +++
drivers/tty/serial/8250/8250_uniphier.c | 3 +++
2 files changed, 6 insertions(+)
diff --git a/Documentation/devicetree/bindings/serial/uniphier-uart.txt b/Documentation/devicetree/bindings/serial/uniphier-uart.txt
index 811c479..7a1bf02 100644
--- a/Documentation/devicetree/bindings/serial/uniphier-uart.txt
+++ b/Documentation/devicetree/bindings/serial/uniphier-uart.txt
@@ -6,6 +6,9 @@ Required properties:
- interrupts: a single interrupt specifier.
- clocks: phandle to the input clock.
+Optional properties:
+-auto-flow-control: enable automatic flow control support.
+
Example:
aliases {
serial0 = &serial0;
diff --git a/drivers/tty/serial/8250/8250_uniphier.c b/drivers/tty/serial/8250/8250_uniphier.c
index 1028c02..164ba13 100644
--- a/drivers/tty/serial/8250/8250_uniphier.c
+++ b/drivers/tty/serial/8250/8250_uniphier.c
@@ -222,6 +222,9 @@ static int uniphier_uart_probe(struct platform_device *pdev)
up.port.flags = UPF_FIXED_PORT | UPF_FIXED_TYPE;
up.capabilities = UART_CAP_FIFO;
+ if (of_property_read_bool(dev->of_node, "auto-flow-control"))
+ up.capabilities |= UART_CAP_AFE;
+
up.port.serial_in = uniphier_serial_in;
up.port.serial_out = uniphier_serial_out;
up.dl_read = uniphier_serial_dl_read;
--
2.7.4
prev parent reply other threads:[~2018-09-19 5:29 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-09-19 5:28 [PATCH 0/3] serial: 8250_uniphier: remove unused code and add auto-flow-control Masahiro Yamada
2018-09-19 5:28 ` [PATCH 1/3] serial: 8250_uniphier: remove unused "fifo-size" property Masahiro Yamada
2018-09-19 5:28 ` [PATCH 2/3] serial: 8250_uniphier: flatten probe function Masahiro Yamada
2018-09-19 5:28 ` Masahiro Yamada [this message]
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1537334893-26079-4-git-send-email-yamada.masahiro@socionext.com \
--to=yamada.masahiro@socionext.com \
--cc=devicetree@vger.kernel.org \
--cc=gregkh@linuxfoundation.org \
--cc=jslaby@suse.com \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-serial@vger.kernel.org \
--cc=mark.rutland@arm.com \
--cc=okamura.dai@socionext.com \
--cc=robh+dt@kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).