Merge tag 'gpio-v4.9-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio

Pull GPIO updates from Linus Walleij:
 "This is the bulk of GPIO changes for the v4.9 series:

  Subsystem improvements:

   - do away with the last users of the obsolete Kconfig options
     ARCH_REQUIRE_GPIOLIB and ARCH_WANT_OPTIONAL_GPIOLIB (the latter
     always sounded like an item on a wishlist to Santa Claus to me). We
     can now select GPIOLIB and be done with it, for all archs. After
     some struggle it even work on UM. Not that it has GPIO, but if it
     wants to, it can select the library.

   - continued efforts to make drivers properly either tristate or bool.

   - introduce a warning for drivers assigning default triggers to their
     irqchip lines when probed from device tree, so we find and fix
     these ambigous drivers. It is agreed that in the OF config path,
     the device tree defines trigger characteristics.

   - the same warning, mutatis mutandis, for ACPI-probed GPIO irqchips.

   - we introduce the ability to mark certain IRQ lines as "unusable" as
     they can be taken by BIOS/firmware, unrouted in silicon and
     generally nasty if you use them, and such things. This is put to
     good use in the STMPE driver and also in the Cherryview pin control
     driver.

   - a new "mockup" virtual GPIO device that can be used for testing.
     The plan is to add unit tests under tools/* for exercising this
     device and verify that the kernel code paths are working as they
     should.

   - make memory-mapped I/O-drivers depend on HAS_IOMEM. This was
     implicit all the time, but when people started building UM with
     allyesconfig or allmodconfig it exploded in their face.

   - move some stray bits of device tree and ACPI HW description
     callbacks down into their respective implementation silo. These
     were causing issues when compiling on !HAS_IOMEM as well, so now
     eventually UM compiles the GPIOLIB library if it wants to.

  New drivers:

   - new driver for the Aspeed GPIO front-end companion to the pin
     controller merged through the pin control tree.

   - new driver for the LP873x PMIC GPIO portions.

   - new driver for Technologic Systems' I2C FPGA GPIO such as TS4900,
     TS-7970, TS-7990 and TS-4100.

   - new driver for the Broadcom BCM63xx series including BCM6338 and
     BCM6345.

   - new driver for the Intel WhiskeyCove PMIC GPIO.

   - new driver for the Allwinner AXP209 PMIC GPIO portions.

   - new driver for Diamond Systems 48 line GPIO-MM, another of these
     port-mapped I/O expansion cards.

   - support the STMicroelectronics STMPE1600 variant in the STMPE
     driver.

  Driver improvements:

   - the STMPE driver now supports rising/falling edge detection
     properly for IRQs.

   - the PCA954x will now fetch and enable its VCC regulator properly.

   - major rework of the PCA953x driver with the goal of eventually
     switching it over to use regmap and thus modernize it even more.

   - switch the IOP driver to use the generic MMIO GPIO library.

   - move the ages old HTC EGPIO (extended GPIO) GPIO expander driver
     over to this subsystem from MFD, achieveing some separation of
     concerns"

* tag 'gpio-v4.9-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio: (81 commits)
  gpio: add missing static inline
  gpio: OF: localize some gpiochip init functions
  gpio: acpi: separation of concerns
  gpio: OF: separation of concerns
  gpio: make memory-mapped drivers depend on HAS_IOMEM
  gpio: stmpe: use BIT() macro
  gpio: stmpe: forbid unused lines to be mapped as IRQs
  mfd/gpio: Move HTC GPIO driver to GPIO subsystem
  gpio: MAINTAINERS: Add an entry for GPIO mockup driver
  gpio/mockup: add virtual gpio device
  gpio: Added zynq specific check for special pins on bank zero
  gpio: axp209: Implement get_direction
  gpio: aspeed: remove redundant return value check
  gpio: loongson1: remove redundant return value check
  ARM: omap2: fix missing include
  gpio: tc3589x: fix up complaints on unsigned
  gpio: tc3589x: add .get_direction() and small cleanup
  gpio: f7188x: use gpiochip_get_data instead of container_of
  gpio: tps65218: use devm_gpiochip_add_data() for gpio registration
  gpio: aspeed: fix return value check in aspeed_gpio_probe()
  ...

drivers/gpio/Kconfig

@@ -10,27 +10,6 @@ config ARCH_HAVE_CUSTOM_GPIO_H
 	  overriding the default implementations.  New uses of this are
 	  strongly discouraged.
 
-config ARCH_WANT_OPTIONAL_GPIOLIB
-	bool
-	help
-	  Select this config option from the architecture Kconfig, if
-	  it is possible to use gpiolib on the architecture, but let the
-	  user decide whether to actually build it or not.
-	  Select this instead of ARCH_REQUIRE_GPIOLIB, if your architecture does
-	  not depend on GPIOs being available, but rather let the user
-	  decide whether he needs it or not.
-
-config ARCH_REQUIRE_GPIOLIB
-	bool
-	select GPIOLIB
-	help
-	  Platforms select gpiolib if they use this infrastructure
-	  for all their GPIOs, usually starting with ones integrated
-	  into SOC processors.
-	  Selecting this from the architecture code will cause the gpiolib
-	  code to always get built in.
-
-
 menuconfig GPIOLIB
 	bool "GPIO Support"
 	select ANON_INODES
@@ -87,6 +66,7 @@ config GPIO_SYSFS
 	  exported to userspace; this can be useful when debugging.
 
 config GPIO_GENERIC
+	depends on HAS_IOMEM # Only for IOMEM drivers
 	tristate
 
 # put drivers in the right section, in alphabetical order
@@ -96,6 +76,7 @@ config GPIO_MAX730X
 	tristate
 
 menu "Memory mapped GPIO drivers"
+	depends on HAS_IOMEM
 
 config GPIO_74XX_MMIO
 	tristate "GPIO driver for 74xx-ICs with MMIO access"
@@ -128,6 +109,13 @@ config GPIO_AMDPT
 	  driver for GPIO functionality on Promontory IOHub
 	  Require ACPI ASL code to enumerate as a platform device.
 
+config GPIO_ASPEED
+	tristate "Aspeed GPIO support"
+	depends on (ARCH_ASPEED || COMPILE_TEST) && OF_GPIO
+	select GPIOLIB_IRQCHIP
+	help
+	  Say Y here to support Aspeed AST2400 and AST2500 GPIO controllers.
+
 config GPIO_ATH79
 	tristate "Atheros AR71XX/AR724X/AR913X GPIO support"
 	default y if ATH79
@@ -138,6 +126,12 @@ config GPIO_ATH79
 	  Select this option to enable GPIO driver for
 	  Atheros AR71XX/AR724X/AR913X SoC devices.
 
+config GPIO_AXP209
+	tristate "X-Powers AXP209 PMIC GPIO Support"
+	depends on MFD_AXP20X
+	help
+	  Say yes to enable GPIO support for the AXP209 PMIC
+
 config GPIO_BCM_KONA
 	bool "Broadcom Kona GPIO"
 	depends on OF_GPIO && (ARCH_BCM_MOBILE || COMPILE_TEST)
@@ -237,7 +231,8 @@ config GPIO_ICH
 
 config GPIO_IOP
 	tristate "Intel IOP GPIO"
-	depends on ARM && (ARCH_IOP32X || ARCH_IOP33X)
+	depends on ARCH_IOP32X || ARCH_IOP33X || COMPILE_TEST
+	select GPIO_GENERIC
 	help
 	  Say yes here to support the GPIO functionality of a number of Intel
 	  IOP32X or IOP33X.
@@ -287,6 +282,18 @@ config GPIO_MM_LANTIQ
 	  (EBU) found on Lantiq SoCs. The gpios are output only as they are
 	  created by attaching a 16bit latch to the bus.
 
+config GPIO_MOCKUP
+	tristate "GPIO Testing Driver"
+	depends on GPIOLIB
+	select GPIO_SYSFS
+	help
+	  This enables GPIO Testing driver, which provides a way to test GPIO
+	  subsystem through sysfs(or char device) and debugfs. GPIO_SYSFS
+	  must be selected for this test.
+	  User could use it through the script in
+	  tools/testing/selftests/gpio/gpio-mockup.sh. Reference the usage in
+	  it.
+
 config GPIO_MOXART
 	bool "MOXART GPIO support"
 	depends on ARCH_MOXART || COMPILE_TEST
@@ -574,6 +581,19 @@ config GPIO_F7188X
 	  To compile this driver as a module, choose M here: the module will
 	  be called f7188x-gpio.
 
+config GPIO_GPIO_MM
+	tristate "Diamond Systems GPIO-MM GPIO support"
+	depends on ISA_BUS_API
+	help
+	  Enables GPIO support for the Diamond Systems GPIO-MM and GPIO-MM-12.
+
+	  The Diamond Systems GPIO-MM device features 48 lines of digital I/O
+	  via the emulation of dual 82C55A PPI chips. This driver provides GPIO
+	  support for these 48 channels of digital I/O.
+
+	  The base port addresses for the devices may be configured via the base
+	  array module parameter.
+
 config GPIO_IT87
 	tristate "IT87xx GPIO support"
 	help
@@ -780,6 +800,13 @@ config GPIO_TPIC2810
 	  To compile this driver as a module, choose M here: the module will
 	  be called gpio-tpic2810.
 
+config GPIO_TS4900
+	tristate "Technologic Systems FPGA I2C GPIO"
+	select REGMAP_I2C
+	help
+	  Say yes here to enabled the GPIO driver for Technologic's FPGA core.
+	  Series supported include TS-4100, TS-4900, TS-7970 and TS-7990.
+
 endmenu
 
 menu "MFD GPIO expanders"
@@ -849,6 +876,14 @@ config GPIO_DLN2
 	  This driver can also be built as a module. If so, the module
 	  will be called gpio-dln2.
 
+config HTC_EGPIO
+	bool "HTC EGPIO support"
+	depends on GPIOLIB && ARM
+	help
+	    This driver supports the CPLD egpio chip present on
+	    several HTC phones.  It provides basic support for input
+	    pins, output pins, and irqs.
+
 config GPIO_JANZ_TTL
 	tristate "Janz VMOD-TTL Digital IO Module"
 	depends on MFD_JANZ_CMODIO
@@ -875,6 +910,16 @@ config GPIO_LP3943
 	  LP3943 can be used as a GPIO expander which provides up to 16 GPIOs.
 	  Open drain outputs are required for this usage.
 
+config GPIO_LP873X
+	tristate "TI LP873X GPO"
+	depends on MFD_TI_LP873X
+	help
+	  This driver supports the GPO on TI Lp873x PMICs. 2 GPOs are present
+	  on LP873X PMICs.
+
+	  This driver can also be built as a module. If so, the module will be
+          called gpio-lp873x.
+
 config GPIO_MAX77620
 	tristate "GPIO support for PMIC MAX77620 and MAX20024"
 	depends on MFD_MAX77620
@@ -985,6 +1030,19 @@ config GPIO_UCB1400
 	  This enables support for the Philips UCB1400 GPIO pins.
 	  The UCB1400 is an AC97 audio codec.
 
+config GPIO_WHISKEY_COVE
+	tristate "GPIO support for Whiskey Cove PMIC"
+	depends on INTEL_SOC_PMIC
+	select GPIOLIB_IRQCHIP
+	help
+	  Support for GPIO pins on Whiskey Cove PMIC.
+
+	  Say Yes if you have a Intel SoC based tablet with Whiskey Cove PMIC
+	  inside.
+
+	  This driver can also be built as a module. If so, the module will be
+	  called gpio-wcove.
+
 config GPIO_WM831X
 	tristate "WM831x GPIOs"
 	depends on MFD_WM831X