[GIT PULL] GPIO bulk changes for the v4.21 kernel

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Hi Linus,

this is the main part of the v4.21 GPIO changes.

Details are in the signed tag.

Some interesting changes have already trickled in
through the Regulator and MMC/SD trees but get
mentioned in the signed tag nevertheless.

Please pull it in!

Yours,
Linus Walleij

The following changes since commit 651022382c7f8da46cb4872a545ee1da6d097d2a:

  Linux 4.20-rc1 (2018-11-04 15:37:52 -0800)

are available in the Git repository at:

  git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio.git
tags/gpio-v4.21-1

for you to fetch changes up to a7c23f8d154f7919c5fcfceea6e0897be2d5ab71:

  gpio: sama5d2-piobu: Depend on OF_GPIO (2018-12-22 11:08:06 +0100)

----------------------------------------------------------------
This is the bulk of GPIO changes for the v4.21 kernel series:

Core changes:

- Some core changes are already in outside of this pull
  request as they came through the regulator tree, most
  notably devm_gpiod_unhinge() that removes devres refcount
  management from a GPIO descriptor. This is needed in
  subsystems such as regulators where the regulator core
  need to take over the reference counting and lifecycle
  management for a GPIO descriptor.

- We dropped devm_gpiochip_remove() and devm_gpio_chip_match()
  as nothing needs it. We can bring it back if need be.

- Add a global TODO so people see where we are going. This
  helps setting the direction now that we are two GPIO
  maintainers.

- Handle the MMC CD/WP properties in the device tree core.
  (The bulk of patches activating this code is already
  merged through the MMC/SD tree.)

- Augment gpiochip_request_own_desc() to pass a flag so
  we as gpiochips can request lines as active low or open
  drain etc even from ourselves.

New drivers:

- New driver for Cadence GPIO blocks.

- New driver for Atmel SAMA5D2 PIOBU GPIO lines.

Driver improvements:

- A major refactoring of the PCA953x driver - this driver has
  been around for ages, and is now modernized to reduce code
  duplication that has stacked up and is using regmap to read
  write and cache registers.

- Intel drivers are now maintained in a separate tree and
  start with a round of cleanups and unifications.

----------------------------------------------------------------
A.s. Dong (2):
      dt-bindings: gpio: vf610: add optional clocks property
      gpio: vf610: add optional clock support

Andrei.Stefanescu@xxxxxxxxxxxxx (2):
      dt-bindings: arm: atmel: describe SECUMOD usage as a GPIO controller
      gpio: add driver for SAMA5D2 PIOBU pins

Andy Shevchenko (27):
      MAINTAINERS: Do maintain Intel GPIO drivers via separate tree
      gpio: pch: Convert to use managed functions pcim_* and devm_*
      gpio: sodaville: Convert to use managed functions pcim_* and devm_*
      gpio: pch: Convert to dev_pm_ops
      gpio: lynxpoint: Use for_each_set_bit() in IRQ handler
      gpio: pch: Use for_each_set_bit() in IRQ handler
      gpio: sodaville: Use for_each_set_bit() in IRQ handler
      gpio: ich: Simplify error handling in ichx_write_bit()
      gpio: ich: Switch to use struct device instead of platform_device
      gpio: ich: Convert pr_<level> to dev_<level>
      gpio: ich: Join string literals back
      gpio: pch: Remove redundant __func__ from debug print
      gpio: pch: Remove duplicate assignments
      gpio: intel-mid: Remove linux/module.h and sort headers
      gpio: lynxpoint: Remove linux/init.h and sort headers
      gpio: merrifield: Remove linux/init.h
      gpio: sch: Remove linux/init.h and sort headers
      gpio: ich: Sort headers alphabetically
      gpio: pch: Sort headers alphabetically
      gpio: sodaville: Sort headers alphabetically
      gpio: ich: Convert to use SPDX identifier
      gpio: intel-mid: Convert to use SPDX identifier
      gpio: lynxpoint: Convert to use SPDX identifier
      gpio: merrifield: Convert to use SPDX identifier
      gpio: pch: Convert to use SPDX identifier
      gpio: sch: Convert to use SPDX identifier
      gpio: sodaville: Convert to use SPDX identifier

Anson Huang (1):
      gpio: mxc: move gpio noirq suspend/resume to syscore phase

Bartosz Golaszewski (1):
      MAINTAINERS: remove a duplicate entry for gpio-mockup

Brajeswar Ghosh (1):
      drivers/gpio/gpio-grgpio.c: Remove duplicate header

Brandon Maier (1):
      gpio: zynq: Report gpio direction at boot

Colin Ian King (2):
      gpio: sch311x: clean an indentation issue, remove extraneous space
      gpiolib-acpi: remove unused variable 'err', cleans up build warning

Fabrizio Castro (1):
      dt-bindings: gpio: rcar: Add r8a774c0 (RZ/G2E) support

Jan Kotas (2):
      dt-bindings: gpio: Add bindings for Cadence GPIO
      gpio: Add Cadence GPIO driver

Johan Hovold (1):
      gpio: drop broken to_gpio_irq_chip() helper

Krzysztof Kozlowski (1):
      gpiolib: Fix return value of gpio_to_desc() stub if !GPIOLIB

Kuninori Morimoto (1):
      gpio: rcar: convert to SPDX identifiers

Laurent Pinchart (1):
      gpio: drop devm_gpio_chip_match()

Linus Walleij (9):
      gpio: Add global TODO file for GPIO
      gpio: OF: Parse MMC-specific CD and WP properties
      gpio: Pass a flag to gpiochip_request_own_desc()
      Merge tag 'intel-gpio-v4.21-1' of
git://git.kernel.org/.../andy/linux-gpio-intel into devel
      Merge branch 'ib-pca953x' into devel
      ARM: omap1: Fix new user of gpiochip_request_own_desc()
      memory: omap-gpmc: Get the header of the enum
      gpio/mmc/of: Respect polarity in the device tree
      gpio: sama5d2-piobu: Depend on OF_GPIO

Manivannan Sadhasivam (1):
      gpio: pl061: Move irq_chip definition inside struct pl061

Marek Vasut (15):
      gpio: pca953x: Deduplicate the bank_shift
      gpio: pca953x: Fix AI overflow on PCAL6524
      gpio: pca953x: Repair multi-byte IO address increment on PCA9575
      gpio: pca953x: Unify pca95{3,7}x_write_regs_16()
      gpio: pca953x: Unify pca953x_{read,write}_regs_{16,24}()
      gpio: pca953x: Unify pca953x_{read,write}_regs_{8,mul}()
      gpio: pca953x: Factor out common code from device_pca95xx_init()
      gpio: pca953x: Zap ad-hoc I2C block write in multi GPIO set
      gpio: pca953x: Extract the register address mangling to single function
      gpio: pca953x: Perform basic regmap conversion
      gpio: pca953x: Zap ad-hoc reg_direction cache
      gpio: pca953x: Zap ad-hoc reg_output cache
      gpio: pca953x: Zap single use of pca953x_read_single()
      gpio: pca953x: Restore registers after suspend/resume cycle
      gpio: pca953x: Add regmap dependency for PCA953x driver

Masahiro Yamada (1):
      gpio: uniphier: convert to SPDX License Identifier

Muchun Song (1):
      gpiolib: Fix possible use after free on label

Nicholas Mc Guire (2):
      gpio: mt7621: report failure of devm_kasprintf()
      gpio: mt7621: pass mediatek_gpio_bank_probe() failure up the stack

Nicolas Saenz Julienne (1):
      gpio: raspberrypi-exp: decrease refcount on firmware dt node

Phil Edworthy (1):
      gpio: dwapb: Correct the DT node name in the example

Tao Ren (1):
      gpio: aspeed: remove duplicated statement

Thierry Reding (2):
      dt-bindings: tegra186-gpio: Add Tegra186 specific prefix
      gpio: tegra186: Rename flow variable to type

Uwe Kleine-König (2):
      gpio: drop devm_gpiochip_remove()
      gpio: mxs: read pin level directly instead of using .get

Vladimir Zapolskiy (8):
      gpio: restore original GPLv2+ license of gpiolib-of.c sources
      gpio: rcar: reference device instead of platform device
      gpio: lpc18xx: use SPDX license identifier
      gpio: lpc18xx: add struct device local variable
      gpio: lpc18xx: use resource managed interface to register GPIO controller
      gpio: lpc18xx: add GPIO pin interrupt controller support
      dt-bindings: gpio: lpc18xx: describe interrupt controllers of
GPIO controller
      gpio: lpc18xx: fix GPIO controller driver build as a module

William Breathitt Gray (6):
      gpio: 104-dio-48e: Mask read inputs for get_multiple
      gpio: 104-idi-48e: Mask the read inputs for get_multiple
      gpio: gpio-mm: Mask read inputs for get_multiple
      gpio: ws16c48: Mask read inputs for get_multiple
      gpio: pci-idio-16: Mask read inputs for get_multiple
      gpio: pcie-idio-24: Mask read inputs for get_multiple

Wolfram Sang (6):
      gpio: gpio-dwapb: simplify getting .driver_data
      gpio: gpio-lynxpoint: simplify getting .driver_data
      gpio: gpio-mxc: simplify getting .driver_data
      gpio: gpio-omap: simplify getting .driver_data
      gpio: gpio-zynq: simplify getting .driver_data
      gpio: gpio-tegra: simplify getting .driver_data

Yangtao Li (1):
      gpio: ks8695: Change to use DEFINE_SHOW_ATTRIBUTE macro

 .../devicetree/bindings/arm/atmel-sysregs.txt      |  12 +-
 .../devicetree/bindings/gpio/cdns,gpio.txt         |  43 ++
 .../devicetree/bindings/gpio/gpio-vf610.txt        |   6 +
 .../devicetree/bindings/gpio/nxp,lpc1850-gpio.txt  |  38 +-
 .../devicetree/bindings/gpio/renesas,gpio-rcar.txt |   1 +
 .../devicetree/bindings/gpio/snps-dwapb-gpio.txt   |   4 +-
 Documentation/driver-api/gpio/driver.rst           |   4 +-
 Documentation/driver-model/devres.txt              |   1 -
 MAINTAINERS                                        |  40 +-
 arch/arm/mach-omap1/ams-delta-fiq.c                |   2 +-
 arch/arm/mach-omap1/board-ams-delta.c              |   4 +-
 drivers/gpio/Kconfig                               |  22 +
 drivers/gpio/Makefile                              |   2 +
 drivers/gpio/TODO                                  | 109 +++++
 drivers/gpio/gpio-104-dio-48e.c                    |   2 +-
 drivers/gpio/gpio-104-idi-48.c                     |   2 +-
 drivers/gpio/gpio-aspeed.c                         |   1 -
 drivers/gpio/gpio-cadence.c                        | 291 +++++++++++++
 drivers/gpio/gpio-dwapb.c                          |   6 +-
 drivers/gpio/gpio-gpio-mm.c                        |   2 +-
 drivers/gpio/gpio-grgpio.c                         |   1 -
 drivers/gpio/gpio-ich.c                            |  73 ++--
 drivers/gpio/gpio-intel-mid.c                      |  16 +-
 drivers/gpio/gpio-ks8695.c                         |  15 +-
 drivers/gpio/gpio-lpc18xx.c                        | 286 +++++++++++-
 drivers/gpio/gpio-lynxpoint.c                      |  47 +-
 drivers/gpio/gpio-merrifield.c                     |   6 +-
 drivers/gpio/gpio-mt7621.c                         |  10 +-
 drivers/gpio/gpio-mvebu.c                          |   2 +-
 drivers/gpio/gpio-mxc.c                            |  41 +-
 drivers/gpio/gpio-mxs.c                            |   2 +-
 drivers/gpio/gpio-omap.c                           |  12 +-
 drivers/gpio/gpio-pca953x.c                        | 484 +++++++++++++--------
 drivers/gpio/gpio-pch.c                            | 165 ++-----
 drivers/gpio/gpio-pci-idio-16.c                    |   2 +-
 drivers/gpio/gpio-pcie-idio-24.c                   |   2 +-
 drivers/gpio/gpio-pl061.c                          |  21 +-
 drivers/gpio/gpio-raspberrypi-exp.c                |   1 +
 drivers/gpio/gpio-rcar.c                           |  34 +-
 drivers/gpio/gpio-sama5d2-piobu.c                  | 253 +++++++++++
 drivers/gpio/gpio-sch.c                            |  27 +-
 drivers/gpio/gpio-sch311x.c                        |   2 +-
 drivers/gpio/gpio-sodaville.c                      |  73 ++--
 drivers/gpio/gpio-tegra.c                          |   6 +-
 drivers/gpio/gpio-tegra186.c                       |   6 +-
 drivers/gpio/gpio-uniphier.c                       |  17 +-
 drivers/gpio/gpio-vf610.c                          |  44 ++
 drivers/gpio/gpio-ws16c48.c                        |   2 +-
 drivers/gpio/gpio-zynq.c                           |  29 +-
 drivers/gpio/gpiolib-acpi.c                        |  14 +-
 drivers/gpio/gpiolib-of.c                          |  26 +-
 drivers/gpio/gpiolib.c                             |  76 ++--
 drivers/hid/hid-cp2112.c                           |   2 +-
 drivers/memory/omap-gpmc.c                         |   4 +-
 include/dt-bindings/gpio/tegra186-gpio.h           |  41 ++
 include/linux/gpio/consumer.h                      |   8 +-
 include/linux/gpio/driver.h                        |  10 +-
 57 files changed, 1762 insertions(+), 690 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/gpio/cdns,gpio.txt
 create mode 100644 drivers/gpio/TODO
 create mode 100644 drivers/gpio/gpio-cadence.c
 create mode 100644 drivers/gpio/gpio-sama5d2-piobu.c
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