linux-kernel - [PATCH v4 00/10] Add support for MAX7360

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Message-Id: <20250214-mdb-max7360-support-v4-0-8a35c6dbb966@bootlin.com>
Date: Fri, 14 Feb 2025 12:49:50 +0100
From: Mathieu Dubois-Briand <mathieu.dubois-briand@...tlin.com>
To: Lee Jones <lee@...nel.org>, Rob Herring <robh@...nel.org>, 
 Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, 
 Kamel Bouhara <kamel.bouhara@...tlin.com>, 
 Linus Walleij <linus.walleij@...aro.org>, 
 Bartosz Golaszewski <brgl@...ev.pl>, 
 Dmitry Torokhov <dmitry.torokhov@...il.com>, 
 Uwe Kleine-König <ukleinek@...nel.org>, 
 Michael Walle <mwalle@...nel.org>, Mark Brown <broonie@...nel.org>, 
 Greg Kroah-Hartman <gregkh@...uxfoundation.org>, 
 "Rafael J. Wysocki" <rafael@...nel.org>, Danilo Krummrich <dakr@...nel.org>
Cc: devicetree@...r.kernel.org, linux-kernel@...r.kernel.org, 
 linux-gpio@...r.kernel.org, linux-input@...r.kernel.org, 
 linux-pwm@...r.kernel.org, andriy.shevchenko@...el.com, 
 Grégory Clement <gregory.clement@...tlin.com>, 
 Thomas Petazzoni <thomas.petazzoni@...tlin.com>, 
 Mathieu Dubois-Briand <mathieu.dubois-briand@...tlin.com>
Subject: [PATCH v4 00/10] Add support for MAX7360

This series implements a set of drivers allowing to support the Maxim
Integrated MAX7360 device.

The MAX7360 is an I2C key-switch and led controller, with following
functionalities:
- Keypad controller for a key matrix of up to 8 rows and 8 columns.
- Rotary encoder support, for a single rotary encoder.
- Up to 8 PWM outputs.
- Up to 8 GPIOs with support for interrupts and 6 GPOs.

Chipset pins are shared between all functionalities, so all cannot be
used at the same time.

Signed-off-by: Mathieu Dubois-Briand <mathieu.dubois-briand@...tlin.com>
---
Changes in v4:
- Modified the GPIO driver to use gpio-regmap and regmap-irq.
- Add support for request()/free() callbacks in gpio-regmap.
- Add support for status_is_level in regmap-irq.
- Switched the PWM driver to waveform callbacks.
- Various small fixes in MFD, PWM, GPIO drivers and dt bindings.
- Rebased on v6.14-rc2.
- Link to v3: https://lore.kernel.org/r/20250113-mdb-max7360-support-v3-0-9519b4acb0b1@bootlin.com

Changes in v3:
- Fix MFD device tree binding to add gpio child nodes.
- Fix various small issues in device tree bindings.
- Add missing line returns in error messages.
- Use dev_err_probe() when possible.
- Link to v2: https://lore.kernel.org/r/20241223-mdb-max7360-support-v2-0-37a8d22c36ed@bootlin.com

Changes in v2:
- Removing device tree subnodes for keypad, rotary encoder and pwm
  functionalities.
- Fixed dt-bindings syntax and naming.
- Fixed missing handling of requested period in PWM driver.
- Cleanup of the code
- Link to v1: https://lore.kernel.org/r/20241219-mdb-max7360-support-v1-0-8e8317584121@bootlin.com

---
Kamel Bouhara (2):
      mfd: Add max7360 support
      pwm: max7360: Add MAX7360 PWM support

Mathieu Dubois-Briand (8):
      dt-bindings: mfd: gpio: Add MAX7360
      gpio: regmap: Allow to provide request and free callbacks
      gpio: regmap: Allow to retrieve ngpio
      regmap: irq: Add support for chips without separate IRQ status
      gpio: max7360: Add MAX7360 gpio support
      input: keyboard: Add support for MAX7360 keypad
      input: misc: Add support for MAX7360 rotary
      MAINTAINERS: Add entry on MAX7360 driver

 .../bindings/gpio/maxim,max7360-gpio.yaml          |  91 +++++++
 .../devicetree/bindings/mfd/maxim,max7360.yaml     | 139 ++++++++++
 MAINTAINERS                                        |  12 +
 drivers/base/regmap/regmap-irq.c                   |  83 ++++--
 drivers/gpio/Kconfig                               |  11 +
 drivers/gpio/Makefile                              |   1 +
 drivers/gpio/gpio-max7360.c                        | 253 ++++++++++++++++++
 drivers/gpio/gpio-regmap.c                         |   8 +
 drivers/input/keyboard/Kconfig                     |  12 +
 drivers/input/keyboard/Makefile                    |   1 +
 drivers/input/keyboard/max7360-keypad.c            | 282 +++++++++++++++++++++
 drivers/input/misc/Kconfig                         |  11 +
 drivers/input/misc/Makefile                        |   1 +
 drivers/input/misc/max7360-rotary.c                | 182 +++++++++++++
 drivers/mfd/Kconfig                                |  14 +
 drivers/mfd/Makefile                               |   1 +
 drivers/mfd/max7360.c                              | 218 ++++++++++++++++
 drivers/pwm/Kconfig                                |  10 +
 drivers/pwm/Makefile                               |   1 +
 drivers/pwm/pwm-max7360.c                          | 213 ++++++++++++++++
 include/linux/gpio/regmap.h                        |  10 +
 include/linux/mfd/max7360.h                        | 112 ++++++++
 include/linux/regmap.h                             |   3 +
 23 files changed, 1649 insertions(+), 20 deletions(-)
---
base-commit: a64dcfb451e254085a7daee5fe51bf22959d52d3
change-id: 20241219-mdb-max7360-support-223a8ce45ba3

Best regards,
-- 
Mathieu Dubois-Briand <mathieu.dubois-briand@...tlin.com>