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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


WARNING: multiple messages have this Message-ID (diff)
From: yamada.masahiro@socionext.com (Masahiro Yamada)
To: 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

  parent reply	other threads:[~2018-09-19  5:29 UTC|newest]

Thread overview: 13+ 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 ` Masahiro Yamada
2018-09-19  5:28 ` 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   ` Masahiro Yamada
2018-09-25 11:24   ` Rob Herring
2018-09-25 11:24     ` Rob Herring
2018-09-19  5:28 ` [PATCH 2/3] serial: 8250_uniphier: flatten probe function Masahiro Yamada
2018-09-19  5:28   ` Masahiro Yamada
2018-09-19  5:28 ` Masahiro Yamada [this message]
2018-09-19  5:28   ` [PATCH 3/3] serial: 8250_uniphier: add auto-flow-control support Masahiro Yamada
2018-09-25 11:24   ` Rob Herring
2018-09-25 11:24     ` Rob Herring

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