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From: Alexandru Ardelean <alexandru.ardelean@analog.com>
To: <linux-iio@vger.kernel.org>, <linux-spi@vger.kernel.org>,
	<linux-kernel@vger.kernel.org>
Cc: <jic23@kernel.org>, <broonie@kernel.org>,
	Alexandru Ardelean <alexandru.ardelean@analog.com>
Subject: [PATCH v2 0/4] spi: introduce `struct spi_delay` data-type 
Date: Fri, 13 Sep 2019 14:55:45 +0300
Message-ID: <20190913115549.3823-1-alexandru.ardelean@analog.com> (raw)

Discussion reference:
  https://lore.kernel.org/lkml/20190913114550.956-1-alexandru.ardelean@analog.com/

This changeset introduces an `spi_delay` struct/data-type and makes the
IIO ADIS driver library the first user of this.

The patchset base is Jonathan's `iio/togreg` branch, but it also applies on
Mark's `spi/for-next` branch.

The reasons for choosing `cs_change_delay`, is:
1. this change introduces delay units
2. it is not yet widely used, meaning it can still be changed 

Some delays like `delay` from `spi_transfer` would require a longer
update-time change & discussion.

Alexandru Ardelean (4):
  spi: move `cs_change_delay` backwards compat logic outside switch
  spi: introduce spi_delay struct as "value + unit" &  spi_delay_exec()
  spi: make `cs_change_delay` the first user of the `spi_delay` logic
  iio: imu: adis: convert cs_change_delay to spi_delay struct

 drivers/iio/imu/adis.c  | 24 +++++++--------
 drivers/spi/spi.c       | 68 +++++++++++++++++++++++++++++++----------
 include/linux/spi/spi.h | 22 +++++++++----
 3 files changed, 80 insertions(+), 34 deletions(-)

-- 

Changelog v1 -> v2:
* split away from the RFC patchset, which aims to be a broader explanation
  for this changeset; parts of v1 are not 100% defined yet, and may require
  some discussion and refinement.

2.20.1


             reply index

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-09-13 11:55 Alexandru Ardelean [this message]
2019-09-13 11:55 ` [PATCH v2 1/4] spi: move `cs_change_delay` backwards compat logic outside switch Alexandru Ardelean
2019-09-13 11:55 ` [PATCH v2 2/4] spi: introduce spi_delay struct as "value + unit" & spi_delay_exec() Alexandru Ardelean
2019-09-13 11:55 ` [PATCH v2 3/4] spi: make `cs_change_delay` the first user of the `spi_delay` logic Alexandru Ardelean
2019-09-13 11:55 ` [PATCH v2 4/4] iio: imu: adis: convert cs_change_delay to spi_delay struct Alexandru Ardelean
2019-09-15 10:14   ` Jonathan Cameron
2019-09-16  6:58     ` Ardelean, Alexandru

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