Date:   Sat, 21 Jul 2018 14:23:09 -0400
From:   William Breathitt Gray <vilhelm.gray@...il.com>
To:     Jonathan Cameron <jic23@...nel.org>
Cc:     gregkh@...uxfoundation.org, linux-arm-kernel@...ts.infradead.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-iio@...r.kernel.org, fabrice.gasnier@...com,
        benjamin.gaignard@...com, knaack.h@....de, lars@...afoo.de,
        pmeerw@...erw.net, akpm@...ux-foundation.org
Subject: Re: [PATCH v8 00/11] Introduce the Counter subsystem

On Sat, Jul 21, 2018 at 07:01:34PM +0100, Jonathan Cameron wrote:
>On Sun, 15 Jul 2018 16:44:24 -0400
>William Breathitt Gray <vilhelm.gray@...il.com> wrote:
>
>> Changes in v8:
>>  - Add counter_enum.h file
>>  - Simplify COUNTER Kconfig option help text
>>  - Rename generic-counter.c to the more straightforward counter.c
>>  - Update copyright and license boilerplate (use recommended SPDX line)
>>  - Replace EXPORT_SYMBOL lines with respective EXPORT_SYMBOL_GPL lines
>>  - Replace scnprintf lines with sprintf since we're dealing with sysfs files
>>  - Add struct counter_attr_parm to simplify counter_attribute_create parameters
>>  - Rename *_comp_t suffixes to *_unit in order to avoid *_t suffix implications
>>  - List sysfs attribute values verbatim in sysfs documentation files
>>  - Reorganize 104-QUAD-8 driver license boilerplate update to dedicated patch
>> 
>> This revision is functionally identical to the last; changes in this version
>> were made to improve clarity, formatting and whitespace, and organization. I
>> also took this opportunity to record some of the new ACKs from the last
>> submission.
>> 
>> The counter_enum.h file was created to hold the Generic Counter enum helper
>> functions required by the Generic Counter enum macros (i.e. COUNTER_SIGNAL_ENUM,
>> COUNTER_COUNT_ENUM, etc.). These helper functions are not intended to be used
>> directly by driver authors, so I thought it best to keep them separated. Now the
>> counter.h file contains only macro, functions, and data structures that are
>> expected to possibly appear in a counter device driver.
>> 
>> The counter_attribute_create function parameter list was large so I reorganized
>> the parameters into the counter_attr_parm structure, which may be set and passed
>> by reference to the counter_attribute_create function. Since the show and store
>> function pointers match with the struct device_attribute show and store function
>> pointers, I decided to keep them declared as there are here without a typedef --
>> however, I can typedef them in a future revision if it will improve clarity to
>> do so.
>> 
>> Heads-up for Jonathan Cameron: you may pick-up the "iio: 104-quad-8: Update
>> license boilerplate" patch independent of this series; it's the SPDX license
>> boilerplate update for the 104-QUAD-8 IIO driver.
>> 
>> Sincerely,
>> 
>> William Breathitt Gray
>> 
>This crossed with Andrew Morton's good points on this occupying
>namespace that is rather too generically named.  Hence I'll assume
>we'll see a v9 with a solution to that (and personally ignore v8
>to save time ;)
>
>Ah I see you just replied to Andrew. Great!
>
>
>Jonathan

That's right: please ignore this v8 release; Andrew Morton's suggestions
on the v7 thread are quick enough that I should have a v9 tested and
submitted by tomorrow, so keep an eye out for that one instead.

Thanks,

William Breathitt Gray

>
>> Benjamin Gaignard (2):
>>   counter: Add STM32 Timer quadrature encoder
>>   dt-bindings: counter: Document stm32 quadrature encoder
>> 
>> Fabrice Gasnier (2):
>>   counter: stm32-lptimer: add counter device
>>   dt-bindings: counter: Adjust dt-bindings for STM32 lptimer move
>> 
>> William Breathitt Gray (7):
>>   counter: Introduce the Generic Counter interface
>>   counter: Documentation: Add Generic Counter sysfs documentation
>>   docs: Add Generic Counter interface documentation
>>   iio: 104-quad-8: Update license boilerplate
>>   counter: 104-quad-8: Add Generic Counter interface support
>>   counter: 104-quad-8: Documentation: Add Generic Counter sysfs
>>     documentation
>>   iio: counter: Add deprecation markings for IIO Counter attributes
>> 
>>  Documentation/ABI/testing/sysfs-bus-counter   |  230 +++
>>  .../ABI/testing/sysfs-bus-counter-104-quad-8  |   36 +
>>  Documentation/ABI/testing/sysfs-bus-iio       |    8 +
>>  .../testing/sysfs-bus-iio-counter-104-quad-8  |   16 +
>>  .../{iio => }/counter/stm32-lptimer-cnt.txt   |    0
>>  .../bindings/counter/stm32-timer-cnt.txt      |   31 +
>>  .../devicetree/bindings/mfd/stm32-lptimer.txt |    2 +-
>>  .../devicetree/bindings/mfd/stm32-timers.txt  |    7 +
>>  Documentation/driver-api/generic-counter.rst  |  342 ++++
>>  Documentation/driver-api/index.rst            |    1 +
>>  MAINTAINERS                                   |   15 +-
>>  drivers/Kconfig                               |    2 +
>>  drivers/Makefile                              |    1 +
>>  drivers/{iio => }/counter/104-quad-8.c        |  782 ++++++++-
>>  drivers/counter/Kconfig                       |   51 +
>>  drivers/{iio => }/counter/Makefile            |    5 +-
>>  drivers/counter/counter.c                     | 1561 +++++++++++++++++
>>  drivers/{iio => }/counter/stm32-lptimer-cnt.c |  361 +++-
>>  drivers/counter/stm32-timer-cnt.c             |  390 ++++
>>  drivers/iio/Kconfig                           |    1 -
>>  drivers/iio/Makefile                          |    1 -
>>  drivers/iio/counter/Kconfig                   |   34 -
>>  include/linux/counter.h                       |  505 ++++++
>>  include/linux/counter_enum.h                  |   45 +
>>  24 files changed, 4341 insertions(+), 86 deletions(-)
>>  create mode 100644 Documentation/ABI/testing/sysfs-bus-counter
>>  create mode 100644 Documentation/ABI/testing/sysfs-bus-counter-104-quad-8
>>  rename Documentation/devicetree/bindings/{iio => }/counter/stm32-lptimer-cnt.txt (100%)
>>  create mode 100644 Documentation/devicetree/bindings/counter/stm32-timer-cnt.txt
>>  create mode 100644 Documentation/driver-api/generic-counter.rst
>>  rename drivers/{iio => }/counter/104-quad-8.c (44%)
>>  create mode 100644 drivers/counter/Kconfig
>>  rename drivers/{iio => }/counter/Makefile (46%)
>>  create mode 100644 drivers/counter/counter.c
>>  rename drivers/{iio => }/counter/stm32-lptimer-cnt.c (48%)
>>  create mode 100644 drivers/counter/stm32-timer-cnt.c
>>  delete mode 100644 drivers/iio/counter/Kconfig
>>  create mode 100644 include/linux/counter.h
>>  create mode 100644 include/linux/counter_enum.h
>> 
>

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