[PATCH v4 0/5] Add Mediatek SoC Pinctrl/GPIO/EINT driver for MT8135.

[Hongzhou Yang]

This is v4 of add Mediatek SoC Pinctrl/GPIO/EINT drvier for MT8135.
It is based on Joe.C' basic device tree support.
See http://lists.infradead.org/pipermail/linux-arm-kernel/2014-October/296093.html

This driver include common and MT8135 part, other Mediatek SoCs will share the common part,
and MT8135 part only support MT8135. MT8135 has GPIO controller, it includes 203 pins.

Note:
  - Due to MSDC requirement, we have to add EINT and pinconf feature in this version.
  - Since I don't know the final conclusion about the device tree format, so I still keep it as original.
  
Changes in v4:
  - Add EINT support to this pinctrl driver.
  - Add input enable, SMT and drive strength support.
  - Add special control for pull config.
  - Use regmap_update_bits() for mux setting.
  - Modify mtk_desc_pin struct, add mtk_desc_eint struct for EINT support.
  - Modify pinctrl-mtk-mt8135.h, add MTK_EINT_FUNCTION node, remove NULL functions.

According to Linus' suggestion, make some following changes:
  - Select GPIOLIB and OF_GPIO.
  - Use pinctrl util API for pinconf map.

Changes in v3:
  - Rebase on 3.18-rc1.
  - Follow '[RFC] pinctrl: Provide a generic device tree binding for per-pin pin controllers', modify mediatek,pins format,
    add config setting for each pin, the reason is that each pin may have different config.
    The RFC link: http://lists.infradead.org/pipermail/linux-arm-kernel/2014-October/296491.html
  - Switch to use syscon regmap.
  - Add CLR_ADDR() and SET_ADDR() macros.
  - Add mtk_pconf_set_ies() and mtk_pconf_set_smt() functions to deal with input-enable and input-schmitt-enable.
  - Rename mt_gpio_devdata to mtk_pinctrl_devdata.
  - Rename all mt_prefix to mtk_prefix.
  - Rename mt_pconf_pull_conf() to mtk_pconf_parse_conf, add mtk_pconf_set_pull_select() to deal with pull enable and pull up/down.
    And we will add PIN_CONFIG_DRIVE_STRENGTH to mtk_pconf_parse_conf().
  - Add port_shf, port_mask and port_align members to mtk_pinctrl_devdata struct.
  - Use BIT(x) instead of 1 << (x).
  - Remove mt_pctrl_write_reg() and mt_pctrl_read_reg().
  - Remove mt_gpio_of_xlate().
  - Use .set_mux() instead of .enable().
  - Add some comments.

Hongzhou Yang (3):
  dt-bindings: Add pinctrl bindings for mt65xx/mt81xx.
  ARM: mediatek: Add Pinctrl/GPIO driver for mt8135.
  ARM: dts: mt8135: Add pinctrl/GPIO/EINT node for mt8135.

Maoguang Meng (1):
  ARM: mediatek: Add EINT support to MTK pinctrl driver.

Yingjoe Chen (1):
  ARM: mediatek: Add config options for mediatek SoCs.

 .../devicetree/bindings/pinctrl/pinctrl-mt65xx.txt |  142 ++
 arch/arm/boot/dts/mt8135-pinfunc.h                 | 1304 ++++++++++++
 arch/arm/boot/dts/mt8135.dtsi                      |   24 +
 arch/arm/mach-mediatek/Kconfig                     |   23 +-
 drivers/pinctrl/Kconfig                            |    1 +
 drivers/pinctrl/Makefile                           |    1 +
 drivers/pinctrl/mediatek/Kconfig                   |   14 +
 drivers/pinctrl/mediatek/Makefile                  |    5 +
 drivers/pinctrl/mediatek/pinctrl-mt8135.c          |  373 ++++
 drivers/pinctrl/mediatek/pinctrl-mtk-common.c      | 1169 +++++++++++
 drivers/pinctrl/mediatek/pinctrl-mtk-common.h      |  218 ++
 drivers/pinctrl/mediatek/pinctrl-mtk-mt8135.h      | 2116 ++++++++++++++++++++
 include/dt-bindings/pinctrl/mt65xx.h               |   40 +
 13 files changed, 5429 insertions(+), 1 deletion(-)
 create mode 100644 Documentation/devicetree/bindings/pinctrl/pinctrl-mt65xx.txt
 create mode 100644 arch/arm/boot/dts/mt8135-pinfunc.h
 create mode 100644 drivers/pinctrl/mediatek/Kconfig
 create mode 100644 drivers/pinctrl/mediatek/Makefile
 create mode 100644 drivers/pinctrl/mediatek/pinctrl-mt8135.c
 create mode 100644 drivers/pinctrl/mediatek/pinctrl-mtk-common.c
 create mode 100644 drivers/pinctrl/mediatek/pinctrl-mtk-common.h
 create mode 100644 drivers/pinctrl/mediatek/pinctrl-mtk-mt8135.h
 create mode 100644 include/dt-bindings/pinctrl/mt65xx.h

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1.8.1.1.dirty