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From: Martin Kepplinger <martin.kepplinger@ginzinger.com>
To: <gregkh@linuxfoundation.org>, <robh+dt@kernel.org>,
	<mark.rutland@arm.com>, <jslaby@suse.com>, <corbet@lwn.net>,
	<richard.genoud@gmail.com>, <nicolas.ferre@microchip.com>,
	<alexandre.belloni@bootlin.com>,
	<ludovic.desroches@microchip.com>, <mcoquelin.stm32@gmail.com>,
	<alexandre.torgue@st.com>, <linux-serial@vger.kernel.org>,
	<devicetree@vger.kernel.org>,
	<linux-arm-kernel@lists.infradead.org>,
	<linux-stm32@st-md-mailman.stormreply.com>
Cc: <linux-kernel@vger.kernel.org>,
	Martin Kepplinger <martin.kepplinger@ginzinger.com>
Subject: [PATCH v2 6/9] serial: sc16is7xx: add support for rs485 RTS delays in microseconds
Date: Thu, 21 Feb 2019 18:17:55 +0100	[thread overview]
Message-ID: <20190221171758.10322-6-martin.kepplinger@ginzinger.com> (raw)
In-Reply-To: <20190221171758.10322-1-martin.kepplinger@ginzinger.com>

[-- Attachment #1: Type: text/plain, Size: 1127 bytes --]

Read struct serial_rs485's flag SER_RS485_DELAY_IN_USEC and apply the delay
accordingly.

Signed-off-by: Martin Kepplinger <martin.kepplinger@ginzinger.com>
---
 drivers/tty/serial/sc16is7xx.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/drivers/tty/serial/sc16is7xx.c b/drivers/tty/serial/sc16is7xx.c
index 635178cf3eed..b0e00b9fb177 100644
--- a/drivers/tty/serial/sc16is7xx.c
+++ b/drivers/tty/serial/sc16is7xx.c
@@ -743,7 +743,13 @@ static void sc16is7xx_tx_proc(struct kthread_work *ws)
 	struct uart_port *port = &(to_sc16is7xx_one(ws, tx_work)->port);
 
 	if ((port->rs485.flags & SER_RS485_ENABLED) &&
-	    (port->rs485.delay_rts_before_send > 0))
+	    (port->rs485.delay_rts_before_send > 0) &&
+	    (port->rs485.flags & SER_RS485_DELAY_IN_USEC))
+		usleep_range(port->rs485.delay_rts_before_send,
+			     port->rs485.delay_rts_before_send);
+	else if ((port->rs485.flags & SER_RS485_ENABLED) &&
+		 (port->rs485.delay_rts_before_send > 0) &&
+		 !(port->rs485.flags & SER_RS485_DELAY_IN_USEC))
 		msleep(port->rs485.delay_rts_before_send);
 
 	sc16is7xx_handle_tx(port);
-- 
2.20.1


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WARNING: multiple messages have this Message-ID (diff)
From: Martin Kepplinger <martin.kepplinger@ginzinger.com>
To: gregkh@linuxfoundation.org, robh+dt@kernel.org,
	mark.rutland@arm.com, jslaby@suse.com, corbet@lwn.net,
	richard.genoud@gmail.com, nicolas.ferre@microchip.com,
	alexandre.belloni@bootlin.com, ludovic.desroches@microchip.com,
	mcoquelin.stm32@gmail.com, alexandre.torgue@st.com,
	linux-serial@vger.kernel.org, devicetree@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org,
	linux-stm32@st-md-mailman.stormreply.com
Cc: linux-kernel@vger.kernel.org,
	Martin Kepplinger <martin.kepplinger@ginzinger.com>
Subject: [PATCH v2 6/9] serial: sc16is7xx: add support for rs485 RTS delays in microseconds
Date: Thu, 21 Feb 2019 18:17:55 +0100	[thread overview]
Message-ID: <20190221171758.10322-6-martin.kepplinger@ginzinger.com> (raw)
In-Reply-To: <20190221171758.10322-1-martin.kepplinger@ginzinger.com>

[-- Attachment #1: Type: text/plain, Size: 1127 bytes --]

Read struct serial_rs485's flag SER_RS485_DELAY_IN_USEC and apply the delay
accordingly.

Signed-off-by: Martin Kepplinger <martin.kepplinger@ginzinger.com>
---
 drivers/tty/serial/sc16is7xx.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/drivers/tty/serial/sc16is7xx.c b/drivers/tty/serial/sc16is7xx.c
index 635178cf3eed..b0e00b9fb177 100644
--- a/drivers/tty/serial/sc16is7xx.c
+++ b/drivers/tty/serial/sc16is7xx.c
@@ -743,7 +743,13 @@ static void sc16is7xx_tx_proc(struct kthread_work *ws)
 	struct uart_port *port = &(to_sc16is7xx_one(ws, tx_work)->port);
 
 	if ((port->rs485.flags & SER_RS485_ENABLED) &&
-	    (port->rs485.delay_rts_before_send > 0))
+	    (port->rs485.delay_rts_before_send > 0) &&
+	    (port->rs485.flags & SER_RS485_DELAY_IN_USEC))
+		usleep_range(port->rs485.delay_rts_before_send,
+			     port->rs485.delay_rts_before_send);
+	else if ((port->rs485.flags & SER_RS485_ENABLED) &&
+		 (port->rs485.delay_rts_before_send > 0) &&
+		 !(port->rs485.flags & SER_RS485_DELAY_IN_USEC))
 		msleep(port->rs485.delay_rts_before_send);
 
 	sc16is7xx_handle_tx(port);
-- 
2.20.1


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WARNING: multiple messages have this Message-ID (diff)
From: Martin Kepplinger <martin.kepplinger@ginzinger.com>
To: <gregkh@linuxfoundation.org>, <robh+dt@kernel.org>,
	<mark.rutland@arm.com>, <jslaby@suse.com>, <corbet@lwn.net>,
	<richard.genoud@gmail.com>, <nicolas.ferre@microchip.com>,
	<alexandre.belloni@bootlin.com>,
	<ludovic.desroches@microchip.com>, <mcoquelin.stm32@gmail.com>,
	<alexandre.torgue@st.com>, <linux-serial@vger.kernel.org>,
	<devicetree@vger.kernel.org>,
	<linux-arm-kernel@lists.infradead.org>,
	<linux-stm32@st-md-mailman.stormreply.com>
Cc: Martin Kepplinger <martin.kepplinger@ginzinger.com>,
	linux-kernel@vger.kernel.org
Subject: [PATCH v2 6/9] serial: sc16is7xx: add support for rs485 RTS delays in microseconds
Date: Thu, 21 Feb 2019 18:17:55 +0100	[thread overview]
Message-ID: <20190221171758.10322-6-martin.kepplinger@ginzinger.com> (raw)
In-Reply-To: <20190221171758.10322-1-martin.kepplinger@ginzinger.com>


[-- Attachment #1.1: Type: text/plain, Size: 1127 bytes --]

Read struct serial_rs485's flag SER_RS485_DELAY_IN_USEC and apply the delay
accordingly.

Signed-off-by: Martin Kepplinger <martin.kepplinger@ginzinger.com>
---
 drivers/tty/serial/sc16is7xx.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/drivers/tty/serial/sc16is7xx.c b/drivers/tty/serial/sc16is7xx.c
index 635178cf3eed..b0e00b9fb177 100644
--- a/drivers/tty/serial/sc16is7xx.c
+++ b/drivers/tty/serial/sc16is7xx.c
@@ -743,7 +743,13 @@ static void sc16is7xx_tx_proc(struct kthread_work *ws)
 	struct uart_port *port = &(to_sc16is7xx_one(ws, tx_work)->port);
 
 	if ((port->rs485.flags & SER_RS485_ENABLED) &&
-	    (port->rs485.delay_rts_before_send > 0))
+	    (port->rs485.delay_rts_before_send > 0) &&
+	    (port->rs485.flags & SER_RS485_DELAY_IN_USEC))
+		usleep_range(port->rs485.delay_rts_before_send,
+			     port->rs485.delay_rts_before_send);
+	else if ((port->rs485.flags & SER_RS485_ENABLED) &&
+		 (port->rs485.delay_rts_before_send > 0) &&
+		 !(port->rs485.flags & SER_RS485_DELAY_IN_USEC))
 		msleep(port->rs485.delay_rts_before_send);
 
 	sc16is7xx_handle_tx(port);
-- 
2.20.1


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_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

  parent reply	other threads:[~2019-02-21 17:18 UTC|newest]

Thread overview: 34+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-02-21 17:17 [PATCH v2 1/9] serial: uapi: add SER_RS485_DELAY_IN_USEC flag to struct serial_rs485 Martin Kepplinger
2019-02-21 17:17 ` Martin Kepplinger
2019-02-21 17:17 ` Martin Kepplinger
2019-02-21 17:17 ` [PATCH v2 2/9] Documentation: serial-rs485: document SER_RS485_DELAY_IN_USEC flag Martin Kepplinger
2019-02-21 17:17   ` Martin Kepplinger
2019-02-21 17:17   ` Martin Kepplinger
2019-02-21 17:17 ` [PATCH v2 3/9] serial: core: add rs485-rts-delay-us devicetree property for RS485 Martin Kepplinger
2019-02-21 17:17   ` Martin Kepplinger
2019-02-21 17:17   ` Martin Kepplinger
2019-02-22 23:44   ` Rob Herring
2019-02-22 23:44     ` Rob Herring
2019-02-21 17:17 ` [PATCH v2 4/9] serial: 8250: add support for rs485 RTS delays in microseconds Martin Kepplinger
2019-02-21 17:17   ` Martin Kepplinger
2019-02-21 17:17   ` Martin Kepplinger
2019-03-29 14:36   ` Ahmad Fatoum
2019-03-29 14:36     ` Ahmad Fatoum
2019-02-21 17:17 ` [PATCH v2 5/9] serial: omap-serial: " Martin Kepplinger
2019-02-21 17:17   ` Martin Kepplinger
2019-02-21 17:17   ` Martin Kepplinger
2019-02-21 17:17 ` Martin Kepplinger [this message]
2019-02-21 17:17   ` [PATCH v2 6/9] serial: sc16is7xx: " Martin Kepplinger
2019-02-21 17:17   ` Martin Kepplinger
2019-02-21 17:17 ` [PATCH v2 7/9] serial: atmel_serial: set SER_RS485_DELAY_IN_USEC accordingly Martin Kepplinger
2019-02-21 17:17   ` Martin Kepplinger
2019-02-21 17:17   ` Martin Kepplinger
2019-02-21 17:17 ` [PATCH v2 8/9] serial: fsl_lpuart: " Martin Kepplinger
2019-02-21 17:17   ` Martin Kepplinger
2019-02-21 17:17   ` Martin Kepplinger
2019-02-21 17:17 ` [PATCH v2 9/9] serial: st32-usart: " Martin Kepplinger
2019-02-21 17:17   ` Martin Kepplinger
2019-02-21 17:17   ` Martin Kepplinger
2019-03-08  7:36 ` [PATCH v2 1/9] serial: uapi: add SER_RS485_DELAY_IN_USEC flag to struct serial_rs485 Martin Kepplinger
2019-03-08  7:36   ` Martin Kepplinger
2019-03-08  7:36   ` Martin Kepplinger

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