From: Christoph Fritz <christoph.fritz@hexdev.de>
To: "Ilpo Järvinen" <ilpo.jarvinen@linux.intel.com>,
"Jiri Slaby" <jirislaby@kernel.org>,
"Simon Horman" <horms@kernel.org>,
"Greg Kroah-Hartman" <gregkh@linuxfoundation.org>,
"Marc Kleine-Budde" <mkl@pengutronix.de>,
"Oliver Hartkopp" <socketcan@hartkopp.net>,
"Vincent Mailhol" <mailhol.vincent@wanadoo.fr>,
"David S . Miller" <davem@davemloft.net>,
"Eric Dumazet" <edumazet@google.com>,
"Jakub Kicinski" <kuba@kernel.org>,
"Paolo Abeni" <pabeni@redhat.com>,
"Rob Herring" <robh@kernel.org>,
"Krzysztof Kozlowski" <krzk+dt@kernel.org>,
"Conor Dooley" <conor+dt@kernel.org>,
"Jiri Kosina" <jikos@kernel.org>,
"Benjamin Tissoires" <bentiss@kernel.org>,
"Sebastian Reichel" <sre@kernel.org>,
"Linus Walleij" <linus.walleij@linaro.org>
Cc: Andreas Lauser <andreas.lauser@mercedes-benz.com>,
Jonathan Corbet <corbet@lwn.net>,
Pavel Pisa <pisa@cmp.felk.cvut.cz>,
linux-can@vger.kernel.org, netdev@vger.kernel.org,
devicetree@vger.kernel.org, linux-input@vger.kernel.org,
linux-serial@vger.kernel.org
Subject: [PATCH v4 04/11] tty: serdev: Add method to enable break flags
Date: Thu, 9 May 2024 19:17:29 +0200 [thread overview]
Message-ID: <20240509171736.2048414-5-christoph.fritz@hexdev.de> (raw)
In-Reply-To: <20240509171736.2048414-1-christoph.fritz@hexdev.de>
The recently introduced callback function receive_buf_fp() brings flags
buffer support. To allow signaling of TTY_BREAK flags, this patch
introduces serdev_device_set_break_detection() and an implementation for
ttyport. This enables serdev devices to configure their underlying tty
port to signal or ignore break conditions.
Signed-off-by: Christoph Fritz <christoph.fritz@hexdev.de>
---
drivers/tty/serdev/core.c | 11 +++++++++++
drivers/tty/serdev/serdev-ttyport.c | 17 +++++++++++++++++
include/linux/serdev.h | 2 ++
3 files changed, 30 insertions(+)
diff --git a/drivers/tty/serdev/core.c b/drivers/tty/serdev/core.c
index 613cb356b918d..23a1e76cb553b 100644
--- a/drivers/tty/serdev/core.c
+++ b/drivers/tty/serdev/core.c
@@ -339,6 +339,17 @@ unsigned int serdev_device_set_baudrate(struct serdev_device *serdev, unsigned i
}
EXPORT_SYMBOL_GPL(serdev_device_set_baudrate);
+void serdev_device_set_break_detection(struct serdev_device *serdev, bool enable)
+{
+ struct serdev_controller *ctrl = serdev->ctrl;
+
+ if (!ctrl || !ctrl->ops->set_break_detection)
+ return;
+
+ ctrl->ops->set_break_detection(ctrl, enable);
+}
+EXPORT_SYMBOL_GPL(serdev_device_set_break_detection);
+
void serdev_device_set_flow_control(struct serdev_device *serdev, bool enable)
{
struct serdev_controller *ctrl = serdev->ctrl;
diff --git a/drivers/tty/serdev/serdev-ttyport.c b/drivers/tty/serdev/serdev-ttyport.c
index bb47691afdb21..e928bf4175c6f 100644
--- a/drivers/tty/serdev/serdev-ttyport.c
+++ b/drivers/tty/serdev/serdev-ttyport.c
@@ -192,6 +192,22 @@ static void ttyport_set_flow_control(struct serdev_controller *ctrl, bool enable
tty_set_termios(tty, &ktermios);
}
+static void ttyport_set_break_detection(struct serdev_controller *ctrl, bool enable)
+{
+ struct serport *serport = serdev_controller_get_drvdata(ctrl);
+ struct tty_struct *tty = serport->tty;
+ struct ktermios ktermios = tty->termios;
+
+ ktermios.c_iflag &= ~(IGNBRK | BRKINT);
+
+ if (enable)
+ ktermios.c_iflag |= BRKINT;
+ else
+ ktermios.c_iflag |= IGNBRK;
+
+ tty_set_termios(tty, &ktermios);
+}
+
static int ttyport_set_parity(struct serdev_controller *ctrl,
enum serdev_parity parity)
{
@@ -263,6 +279,7 @@ static const struct serdev_controller_ops ctrl_ops = {
.open = ttyport_open,
.close = ttyport_close,
.set_flow_control = ttyport_set_flow_control,
+ .set_break_detection = ttyport_set_break_detection,
.set_parity = ttyport_set_parity,
.set_baudrate = ttyport_set_baudrate,
.wait_until_sent = ttyport_wait_until_sent,
diff --git a/include/linux/serdev.h b/include/linux/serdev.h
index 94fc81a1de933..84805762a67cc 100644
--- a/include/linux/serdev.h
+++ b/include/linux/serdev.h
@@ -91,6 +91,7 @@ struct serdev_controller_ops {
int (*open)(struct serdev_controller *);
void (*close)(struct serdev_controller *);
void (*set_flow_control)(struct serdev_controller *, bool);
+ void (*set_break_detection)(struct serdev_controller *, bool);
int (*set_parity)(struct serdev_controller *, enum serdev_parity);
unsigned int (*set_baudrate)(struct serdev_controller *, unsigned int);
void (*wait_until_sent)(struct serdev_controller *, long);
@@ -208,6 +209,7 @@ void serdev_device_close(struct serdev_device *);
int devm_serdev_device_open(struct device *, struct serdev_device *);
unsigned int serdev_device_set_baudrate(struct serdev_device *, unsigned int);
void serdev_device_set_flow_control(struct serdev_device *, bool);
+void serdev_device_set_break_detection(struct serdev_device *, bool);
int serdev_device_write_buf(struct serdev_device *, const u8 *, size_t);
void serdev_device_wait_until_sent(struct serdev_device *, long);
int serdev_device_get_tiocm(struct serdev_device *);
--
2.39.2
next prev parent reply other threads:[~2024-05-09 17:19 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-05-09 17:17 [PATCH v4 00/11] LIN Bus support for Linux Christoph Fritz
2024-05-09 17:17 ` [PATCH v4 01/11] can: Add LIN bus as CAN abstraction Christoph Fritz
2024-05-10 13:23 ` Ilpo Järvinen
2024-05-13 9:52 ` Simon Horman
2024-05-09 17:17 ` [PATCH v4 02/11] HID: hexLIN: Add support for USB LIN adapter Christoph Fritz
2024-05-10 13:46 ` Ilpo Järvinen
2024-05-11 8:14 ` Christoph Fritz
2024-05-13 12:27 ` Ilpo Järvinen
2024-05-13 5:26 ` Jiri Slaby
2024-05-09 17:17 ` [PATCH v4 03/11] treewide, serdev: add flags argument to receive_buf() Christoph Fritz
2024-05-10 14:11 ` Ilpo Järvinen
2024-05-09 17:17 ` Christoph Fritz [this message]
2024-05-10 14:21 ` [PATCH v4 04/11] tty: serdev: Add method to enable break flags Ilpo Järvinen
2024-05-12 13:08 ` Christoph Fritz
2024-05-13 12:30 ` Ilpo Järvinen
2024-05-09 17:17 ` [PATCH v4 05/11] dt-bindings: vendor-prefixes: Add hexDEV Christoph Fritz
2024-05-09 17:17 ` [PATCH v4 06/11] dt-bindings: net/can: Add serial LIN adapter hexLINSER Christoph Fritz
2024-05-09 18:09 ` Conor Dooley
2024-05-09 17:17 ` [PATCH v4 07/11] can: Add support for hexDEV " Christoph Fritz
2024-05-10 14:32 ` Ilpo Järvinen
2024-05-09 17:17 ` [PATCH v4 08/11] can: bcm: Add LIN answer offloading for responder mode Christoph Fritz
2024-05-09 17:17 ` [PATCH v4 09/11] can: lin: Handle rx offload config frames Christoph Fritz
2024-05-10 14:36 ` Ilpo Järvinen
2024-05-09 17:17 ` [PATCH v4 10/11] can: lin: Support setting LIN mode Christoph Fritz
2024-05-10 14:39 ` Ilpo Järvinen
2024-05-09 17:17 ` [PATCH v4 11/11] HID: hexLIN: Implement ability to update lin mode Christoph Fritz
2024-05-18 18:29 ` [PATCH v4 00/11] LIN Bus support for Linux Christoph Fritz
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