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
Subject: [PATCH 6/9] serial: sc16is7xx: add support for rs485 RTS delays in microseconds
Date: Wed, 20 Feb 2019 16:31:16 +0100 [thread overview]
Message-ID: <20190220153119.4423-1-martin.kepplinger@ginzinger.com> (raw)
[-- 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
[-- Attachment #2: smime.p7s --]
[-- Type: application/x-pkcs7-signature, Size: 3616 bytes --]
next reply other threads:[~2019-02-20 15:31 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-02-20 15:31 Martin Kepplinger [this message]
2019-02-20 15:31 ` [PATCH 7/9] serial: atmel_serial: set SER_RS485_DELAY_IN_USEC accordingly Martin Kepplinger
2019-02-20 15:31 ` [PATCH 8/9] serial: fsl_lpuart: " Martin Kepplinger
2019-02-20 15:31 ` [PATCH 9/9] serial: st32-usart: " Martin Kepplinger
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=20190220153119.4423-1-martin.kepplinger@ginzinger.com \
--to=martin.kepplinger@ginzinger.com \
--cc=alexandre.belloni@bootlin.com \
--cc=alexandre.torgue@st.com \
--cc=corbet@lwn.net \
--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=linux-stm32@st-md-mailman.stormreply.com \
--cc=ludovic.desroches@microchip.com \
--cc=mark.rutland@arm.com \
--cc=mcoquelin.stm32@gmail.com \
--cc=nicolas.ferre@microchip.com \
--cc=richard.genoud@gmail.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).