linux-kernel - [PATCH v5 0/2] Driver for Microchip digital potentiometers

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-Id: <1443009454-14310-1-git-send-email-peda@lysator.liu.se>
Date:	Wed, 23 Sep 2015 13:57:32 +0200
From:	Peter Rosin <peda@...ator.liu.se>
To:	linux-iio@...r.kernel.org
Cc:	Peter Rosin <peda@...ntia.se>, Crt Mori <cmo@...exis.com>,
	Daniel Baluta <daniel.baluta@...il.com>,
	Andreas Dannenberg <dannenberg@...com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Jonathan Cameron <jic23@...nel.org>,
	Hartmut Knaack <knaack.h@....de>,
	Lars-Peter Clausen <lars@...afoo.de>,
	Peter Meerwald <pmeerw@...erw.net>,
	Peter Rosin <peda@...ator.liu.se>, linux-kernel@...r.kernel.org
Subject: [PATCH v5 0/2] Driver for Microchip digital potentiometers

From: Peter Rosin <peda@...ntia.se>

This is the fifth attempt for a driver for these chips.

Thanks for review comments from Greg Kroah-Hartman, Crt Mori,
Daniel Baluta, Lars-Peter Clauson, Andreas Dannenberg, Peter
Meerwald and Jonathan Cameron. I think and hope I got it all sorted.

Changes since v4:
- Less convoluted changelog (Jonathan)
- Use an index into an array of configs as dev_id (Jonathan)
- Drop .address and use .channel (Jonathan)
- Remove one layer of wrappers (Jonathan)
- Provide a scale (Jonathan, Lars-Peter)

Changes since v3:
- Use i2c_smbus_read_word_swapped (Peter)
- Use devm_iio_device_register and drop the mcp4531_remove op (Peter)
- Add defines for a few magic numbers (Peter)
- Deduplicate channel params with a macro (Peter)
- Mention the i2c client address options (Peter)
- Whitespace and other trivial nits (Peter)

Changes since v2:
- Change naming from mcp4xxx_dpot to mcp4531 (Daniel)
- Added links to datasheet in commit message and source (Daniel)
- Rename from pot to potentiometer (Daniel, Crt)
- Use IIO_RESISTANCE instead of IIO_STEPS (Crt, Lars-Peter)
- Don't use wildcards in MAINTAINERS and point to the iio list (Crt)
- Avoid races by not caching values (Crt)
- Spell Microchip correctly (Andreas)

Changes since v1:
- Make it an IIO driver instead (Greg)
- Don't convolute the code with big obscure macros (Greg)
- Inline the bits from mcp4xxx_dpot.h that are actually used
  and drop that file (me)
- Better Changelog (Greg)

Cheers,
Peter

Peter Rosin (2):
  iio: resistance: Document that resistance can be output
  iio: mcp4531: Driver for Microchip digital potentiometers

 Documentation/ABI/testing/sysfs-bus-iio |    2 +
 MAINTAINERS                             |    6 +
 drivers/iio/Kconfig                     |    1 +
 drivers/iio/Makefile                    |    1 +
 drivers/iio/potentiometer/Kconfig       |   20 +++
 drivers/iio/potentiometer/Makefile      |    6 +
 drivers/iio/potentiometer/mcp4531.c     |  228 +++++++++++++++++++++++++++++++
 7 files changed, 264 insertions(+)
 create mode 100644 drivers/iio/potentiometer/Kconfig
 create mode 100644 drivers/iio/potentiometer/Makefile
 create mode 100644 drivers/iio/potentiometer/mcp4531.c

-- 
1.7.10.4

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/