[PATCH v9 0/4] input: pwm-beeper: add feature to set volume level

From: Manuel Traut <manuel.traut@mt.com>
To: linux-kernel@vger.kernel.org
Cc: Manuel Traut <manuel.traut@mt.com>,
	Dmitry Torokhov <dmitry.torokhov@gmail.com>,
	Rob Herring <robh+dt@kernel.org>,
	Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
	Frieder Schrempf <frieder.schrempf@kontron.de>,
	linux-input@vger.kernel.org, devicetree@vger.kernel.org
Subject: [PATCH v9 0/4] input: pwm-beeper: add feature to set volume level
Date: Mon, 30 Jan 2023 14:56:46 +0100	[thread overview]
Message-ID: <20230130135650.1407156-1-manuel.traut@mt.com> (raw)

This implements volume control for the pwm-beeper via sysfs.

The first patch changes the devicetree documentation from txt to yaml.

The original author of the volume support patches is Frieder Schrempf.
I picked them from this [0] LKML thread from 2017. Since it looks like
his email address changed in the meantime I changed it in the Author
and Signed-off-by, as well as in the copyright statements.
I did some minor changes on the patches that they apply and work with
the current kernel.

checkpatch still reports warnings regarding the changes:
  * from txt to yaml of the devicetree documentation:
      WARNING: added, moved or deleted file(s), does MAINTAINERS need updating?
      WARNING: DT binding docs and includes should be a separate patch.
  * and the introduction of Documentation/ABI/testing/sysfs-devices-pwm-beeper:
      WARNING: added, moved or deleted file(s), does MAINTAINERS need updating?
  I am not sure how to fix these warnings. So any suggestion would be helpful.

Changes since v8 [1]:
 * yaml devicetree doc:
    * reordered patches to introduce dt-bindings before usage
    * drop quotes from $id and $schema references
    * amp-supply: simplify description
    * examples: remove unneeded amp device node
    * use -bp suffix for volume-levels and default-volume
    * specify default-volume as value instead of pointer into volume-array

  * fixup to work with new dt-binding specification
  * squash patches as suggested by Frieder

Changes since v7 [2]:
 * yaml devicetree doc:
    * Use shorter subject
    * Fix indent
    * Use units
    * 'make dt_binding_check' succeeds
    * 'make dtbs_check' does not report new errors

 * Reworded commit messages avoiding 'this patch' phrase
 * Fix wrong indent in [PATCH 5/5 v7] input: pwm-beeper: handle module unloading properly
 * Use current date in Documentation/ABI/testing/sysfs-devices-pwm-beeper

 * Hopefully fixed my setup that
   * mails are CC'ed correctly
   * patches are sent as replies to the cover letter

Changes since v6 [3]:
 * Convert devicetree binding documentation from txt to yaml
 * Use DEVICE_ATTR_[RO|RW] properly
 * Change Frieders Mail address
 * Added Signed-off and Tested-by statements
 * Fix module unloading

Frieder Schrempf (2):
  input: pwm-beeper: add feature to set volume via sysfs
  input: pwm-beeper: set volume levels by devicetree

Manuel Traut (2):
  dt-bindings: input: pwm-beeper: Convert txt bindings to yaml
  dt-bindings: input: pwm-beeper: add volume

 .../ABI/testing/sysfs-devices-pwm-beeper      |  17 +++
 .../devicetree/bindings/input/pwm-beeper.txt  |  24 ----
 .../devicetree/bindings/input/pwm-beeper.yaml |  56 ++++++++
 drivers/input/misc/pwm-beeper.c               | 135 +++++++++++++++++-
 4 files changed, 206 insertions(+), 26 deletions(-)
 create mode 100644 Documentation/ABI/testing/sysfs-devices-pwm-beeper
 delete mode 100644 Documentation/devicetree/bindings/input/pwm-beeper.txt
 create mode 100644 Documentation/devicetree/bindings/input/pwm-beeper.yaml

[0] https://lore.kernel.org/all/cover.1487323753.git.frieder.schrempf@exceet.de/
[1] https://lore.kernel.org/lkml/20230126091825.220646-1-manuel.traut@mt.com/
[2] https://lore.kernel.org/all/Y9AIq3cSNzI9T%2FdU@mt.com/
[3] https://lkml.org/lkml/2023/1/24/379

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2.39.0