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From: minyard@acm.org
To: Oleksij Rempel <o.rempel@pengutronix.de>
Cc: Pengutronix Kernel Team <kernel@pengutronix.de>,
	linux-i2c@vger.kernel.org, linux-kernel@vger.kernel.org,
	Corey Minyard <minyard@acm.org>
Subject: [PATCH v2 0/2] i2c:imx: Deliver a timely stop on slave side, fix recv
Date: Fri, 12 Nov 2021 07:39:54 -0600	[thread overview]
Message-ID: <20211112133956.655179-1-minyard@acm.org> (raw)

I was working on an application that needs the stop condition
immediately.  So this adds a timer after each byte is received/sent and
if the bus is idle at the timeout, send the stop.

Also, I noticed when you use the i2c-slave-eeprom, if you read some data
and then read some data again, the last byte of the first read will be
the first byte of the second read.  This is because i2c-slave-eeprom
expects a read-ahead.  That's what the documentation says, at least.

Thanks to Uwe Kleine-König and Oleksij Rempel for reviewing.

-corey

Changes since v1:

* Added a comment on the hrtimer cancel on why the return value didn't
  need to be checked.

* Combine the hrtimer patch into the main timer patch.



             reply	other threads:[~2021-11-12 13:40 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-11-12 13:39 minyard [this message]
2021-11-12 13:39 ` [PATCH v2 1/2] i2c:imx: Add timer for handling the stop condition minyard
2021-11-12 13:39 ` [PATCH v2 2/2] i2c:imx: Add an extra read at the end of an I2C slave read minyard
2021-11-23 10:28   ` Wolfram Sang
2021-11-23 12:44     ` Corey Minyard

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