[PATCH v6 00/12] pinctrl: add support of Airoha SoCs

[Mikhail Kshevetskiy]

This patch series add pin controller and gpio driver support for EN7523/
AN7581/AN7583 SoCs. The driver based on official linux airoha pinctrl and
gpio driver with Matheus Sampaio Queiroga changes.

The original Matheus Sampaio Queiroga driver can be taken from the repo:
  https://sirherobrine23.com.br/airoha_an7523/kernel/commits/branch/airoha_an7523_pinctrl

Additionally in the EN7523 case the patches removes existing gpio dts nodes
and replaces them with pinctrl node. It should not be very dangerous, because:
 * No official EN7523 gpio support present in U-Boot
 * Legacy Linux EN7523 GPIO driver is mostly abandoned
 * The same driver is planned for upstream linux/openwrt

This patchset includes bitfield.h patches created for Linux kernel
by Geert Uytterhoeven. It suits U-Boot fine. I preserve original author
and original commit messages. It might be not a best strategy, because
these patches refers to other linux kernel commits not added to U-Boot.
Please note me, if there is a better way.

The patches were tested on EN7523/AN7581/AN7583 boards.
---
Changes v2:
 * pinctrl driver was split on common and per SoC parts
 * EN7523 SoC support was added
 * EN7523/AN7581 defconfigs were updated to activate
   pinctrl/gpio support
 * Board/SoC independent pinconf/pinctrl definitions
   were moved to global includes

Changes v3:
 * add non-constant field_{prep,get}() helpers
 * put airoha common code to a separate patch
 * put en7523 dts change to a separate patch
 * add support of "pinmux status" command
 * address a lot of comments from David Lechner

Changes v4:
 * minor refactoring
 * fix gpio initialization, so gpio driver becomes probed

Changes v5:
 * more bitfield changes
 * sort contents of pinctrl makefile
 * address more issues found by David Lechner

Changes v6:
 * pinctrl makefile sorting/formatting was moved to separate commit
 * replace 'tristate' by 'bool' in airoha Kconfig (thanks to Peng Fan)
 * a bit improve menu entry names
 * add an explanation why en7581 prefix used for an7581 chips.
 * add reviewed by David Lechner line to all patches

Geert Uytterhoeven (2):
  bitfield: Add less-checking __FIELD_{GET,PREP}()
  bitfield: Add non-constant field_{prep,get}() helpers

Mikhail Kshevetskiy (10):
  bitops: import BITS_PER_TYPE() macro from linux
  pinctrl: add more pinconf/pinctrl definitions
  pinctrl: sort and format the contents of the makefile
  pinctrl: airoha: add shared pinctrl code
  pinctrl: airoha: add pin controller and gpio driver for AN7581 SoC
  pinctrl: airoha: add pin controller and gpio driver for AN7583 SoC
  pinctrl: airoha: add pin controller and gpio driver for EN7523 SoC
  configs: airoha: an7581: enable pinctrl/gpio support
  configs: airoha: en7523: enable pinctrl/gpio support
  arm: dts: en7523: add pinctrl/gpio support, drop legacy gpio support

 arch/arm/dts/en7523-u-boot.dtsi         |   21 +
 configs/an7581_evb_defconfig            |    2 +-
 configs/en7523_evb_defconfig            |    2 +-
 drivers/pinctrl/Kconfig                 |    1 +
 drivers/pinctrl/Makefile                |   61 +-
 drivers/pinctrl/airoha/Kconfig          |   26 +
 drivers/pinctrl/airoha/Makefile         |    7 +
 drivers/pinctrl/airoha/airoha-common.h  |  476 ++++++++++
 drivers/pinctrl/airoha/pinctrl-airoha.c |  927 +++++++++++++++++++
 drivers/pinctrl/airoha/pinctrl-an7581.c | 1084 +++++++++++++++++++++++
 drivers/pinctrl/airoha/pinctrl-an7583.c |  979 ++++++++++++++++++++
 drivers/pinctrl/airoha/pinctrl-en7523.c |  648 ++++++++++++++
 include/dm/pinctrl.h                    |   28 +
 include/linux/bitfield.h                |   95 +-
 include/linux/bitops.h                  |    1 +
 include/linux/pinctrl/pinctrl.h         |   74 ++
 16 files changed, 4393 insertions(+), 39 deletions(-)
 create mode 100644 drivers/pinctrl/airoha/Kconfig
 create mode 100644 drivers/pinctrl/airoha/Makefile
 create mode 100644 drivers/pinctrl/airoha/airoha-common.h
 create mode 100644 drivers/pinctrl/airoha/pinctrl-airoha.c
 create mode 100644 drivers/pinctrl/airoha/pinctrl-an7581.c
 create mode 100644 drivers/pinctrl/airoha/pinctrl-an7583.c
 create mode 100644 drivers/pinctrl/airoha/pinctrl-en7523.c
 create mode 100644 include/linux/pinctrl/pinctrl.h

-- 
2.53.0