[PATCH v6 00/11] Turris Omnia MCU driver

[Marek Behún <kabel@xxxxxxxxxx>]

Hello Andy, Dan, Linus, Arnd, Gregory, and others,

I am sending v6 of the series adding Turris Omnia MCU driver.

This series depends on the immutable branch between LEDs and locking,
introducing devm_mutex_init(), see the PR
  https://lore.kernel.org/linux-leds/20240412084616.GR2399047@xxxxxxxxxx/

See the cover letters for v1, v2, v3, v4 and v5:
  https://patchwork.kernel.org/project/linux-soc/cover/20230823161012.6986-1-kabel@xxxxxxxxxx/
  https://patchwork.kernel.org/project/linux-soc/cover/20230919103815.16818-1-kabel@xxxxxxxxxx/
  https://patchwork.kernel.org/project/linux-soc/cover/20231023143130.11602-1-kabel@xxxxxxxxxx/
  https://patchwork.kernel.org/project/linux-soc/cover/20231026161803.16750-1-kabel@xxxxxxxxxx/
  https://patchwork.kernel.org/project/linux-soc/cover/20240323164359.21642-1-kabel@xxxxxxxxxx/

Changes since v5:
- use dev_get_drvdata(dev) instead of
  i2c_get_clientdata(to_i2c_client(dev))
- uses devm_mutex_init() from the above mentioned branch
- addressed Andy's suggestions for patch 2 (excluding the one suggesting
  100 column lines, I still prefer 80 columns)
- addressed Dan's suggestion for devm_irq_create_mapping() (return
  -ENXIO if mapping could not be created, not 0 as irq_create_mapping()
  does)
- I threw away the changes for other drivers that came with the new
  devm_ helpers, notably conversion to devm_debugfs_create_dir(), as
  there were some problems

Marek Behún (11):
  dt-bindings: arm: add cznic,turris-omnia-mcu binding
  platform: cznic: Add preliminary support for Turris Omnia MCU
  platform: cznic: turris-omnia-mcu: Add support for MCU connected GPIOs
  platform: cznic: turris-omnia-mcu: Add support for poweroff and wakeup
  platform: cznic: turris-omnia-mcu: Add support for MCU watchdog
  devm-helpers: Add resource managed version of irq_create_mapping()
  platform: cznic: turris-omnia-mcu: Add support for MCU provided TRNG
  devm-helpers: Add resource managed version of debugfs directory create
    function
  platform: cznic: turris-omnia-mcu: Add support for digital message
    signing via debugfs
  ARM: dts: turris-omnia: Add MCU system-controller node
  ARM: dts: turris-omnia: Add GPIO key node for front button

 .../ABI/testing/debugfs-turris-omnia-mcu      |   13 +
 .../sysfs-bus-i2c-devices-turris-omnia-mcu    |  126 ++
 .../bindings/arm/cznic,turris-omnia-mcu.yaml  |   86 ++
 MAINTAINERS                                   |    5 +
 .../dts/marvell/armada-385-turris-omnia.dts   |   35 +-
 drivers/platform/Kconfig                      |    2 +
 drivers/platform/Makefile                     |    1 +
 drivers/platform/cznic/Kconfig                |   51 +
 drivers/platform/cznic/Makefile               |    9 +
 .../platform/cznic/turris-omnia-mcu-base.c    |  439 +++++++
 .../platform/cznic/turris-omnia-mcu-debugfs.c |  209 ++++
 .../platform/cznic/turris-omnia-mcu-gpio.c    | 1047 +++++++++++++++++
 .../cznic/turris-omnia-mcu-sys-off-wakeup.c   |  258 ++++
 .../platform/cznic/turris-omnia-mcu-trng.c    |   89 ++
 .../cznic/turris-omnia-mcu-watchdog.c         |  123 ++
 drivers/platform/cznic/turris-omnia-mcu.h     |  188 +++
 include/linux/devm-helpers.h                  |   94 ++
 include/linux/turris-omnia-mcu-interface.h    |  249 ++++
 18 files changed, 3023 insertions(+), 1 deletion(-)
 create mode 100644 Documentation/ABI/testing/debugfs-turris-omnia-mcu
 create mode 100644 Documentation/ABI/testing/sysfs-bus-i2c-devices-turris-omnia-mcu
 create mode 100644 Documentation/devicetree/bindings/arm/cznic,turris-omnia-mcu.yaml
 create mode 100644 drivers/platform/cznic/Kconfig
 create mode 100644 drivers/platform/cznic/Makefile
 create mode 100644 drivers/platform/cznic/turris-omnia-mcu-base.c
 create mode 100644 drivers/platform/cznic/turris-omnia-mcu-debugfs.c
 create mode 100644 drivers/platform/cznic/turris-omnia-mcu-gpio.c
 create mode 100644 drivers/platform/cznic/turris-omnia-mcu-sys-off-wakeup.c
 create mode 100644 drivers/platform/cznic/turris-omnia-mcu-trng.c
 create mode 100644 drivers/platform/cznic/turris-omnia-mcu-watchdog.c
 create mode 100644 drivers/platform/cznic/turris-omnia-mcu.h
 create mode 100644 include/linux/turris-omnia-mcu-interface.h

-- 
2.43.2