#

  # GPIO infrastructure and drivers

  #

  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"
  	depends on ARCH_WANT_OPTIONAL_GPIOLIB || ARCH_REQUIRE_GPIOLIB
  	select GENERIC_GPIO
  	help
  	  This enables GPIO support through the generic GPIO library.
  	  You only need to enable this, if you also want to enable

  	  one or more of the GPIO drivers below.

  
  	  If unsure, say N.

  if GPIOLIB

  
  config DEBUG_GPIO
  	bool "Debug GPIO calls"
  	depends on DEBUG_KERNEL
  	help
  	  Say Y here to add some extra checks and diagnostics to GPIO calls.

  	  These checks help ensure that GPIOs have been properly initialized
  	  before they are used, and that sleeping calls are not made from
  	  non-sleeping contexts.  They can make bitbanged serial protocols

  	  slower.  The diagnostics help catch the type of setup errors
  	  that are most common when setting up new platforms or boards.

  config GPIO_SYSFS
  	bool "/sys/class/gpio/... (sysfs interface)"
  	depends on SYSFS && EXPERIMENTAL
  	help
  	  Say Y here to add a sysfs interface for GPIOs.
  
  	  This is mostly useful to work around omissions in a system's
  	  kernel support.  Those are common in custom and semicustom
  	  hardware assembled using standard kernels with a minimum of
  	  custom patches.  In those cases, userspace code may import
  	  a given GPIO from the kernel, if no kernel driver requested it.
  
  	  Kernel drivers may also request that a particular GPIO be
  	  exported to userspace; this can be useful when debugging.

  config GPIO_GENERIC
  	tristate

  # put drivers in the right section, in alphabetical order

  config GPIO_DA9052
  	tristate "Dialog DA9052 GPIO"

  	depends on PMIC_DA9052 && BROKEN

  	help
  	  Say yes here to enable the GPIO driver for the DA9052 chip.

  config GPIO_MAX730X
  	tristate

  comment "Memory mapped GPIO drivers:"

  config GPIO_GENERIC_PLATFORM
  	tristate "Generic memory-mapped GPIO controller support (MMIO platform device)"
  	select GPIO_GENERIC

  	help

  	  Say yes here to support basic platform_device memory-mapped GPIO controllers.

  config GPIO_IT8761E
  	tristate "IT8761E GPIO support"

  	help
  	  Say yes here to support GPIO functionality of IT8761E super I/O chip.

  config GPIO_EP93XX
  	def_bool y
  	depends on ARCH_EP93XX

  	select GPIO_GENERIC

  config GPIO_MPC5200
  	def_bool y
  	depends on PPC_MPC52xx

  config GPIO_MPC8XXX
  	bool "MPC512x/MPC8xxx GPIO support"
  	depends on PPC_MPC512x || PPC_MPC831x || PPC_MPC834x || PPC_MPC837x || \
  		   FSL_SOC_BOOKE || PPC_86xx
  	help
  	  Say Y here if you're going to use hardware that connects to the
  	  MPC512x/831x/834x/837x/8572/8610 GPIOs.

  config GPIO_MSM_V1
  	tristate "Qualcomm MSM GPIO v1"
  	depends on GPIOLIB && ARCH_MSM
  	help
  	  Say yes here to support the GPIO interface on ARM v6 based
  	  Qualcomm MSM chips.  Most of the pins on the MSM can be
  	  selected for GPIO, and are controlled by this driver.

  config GPIO_MSM_V2
  	tristate "Qualcomm MSM GPIO v2"
  	depends on GPIOLIB && ARCH_MSM
  	help
  	  Say yes here to support the GPIO interface on ARM v7 based
  	  Qualcomm MSM chips.  Most of the pins on the MSM can be
  	  selected for GPIO, and are controlled by this driver.

  config GPIO_MXC
  	def_bool y
  	depends on ARCH_MXC

  	select GPIO_GENERIC

  	select GENERIC_IRQ_CHIP

  
  config GPIO_MXS
  	def_bool y
  	depends on ARCH_MXS

  	select GPIO_GENERIC

  	select GENERIC_IRQ_CHIP

  config GPIO_PL061
  	bool "PrimeCell PL061 GPIO support"
  	depends on ARM_AMBA

  	select GENERIC_IRQ_CHIP

  	help
  	  Say yes here to support the PrimeCell PL061 GPIO device

  config GPIO_PXA
  	bool "PXA GPIO support"
  	depends on ARCH_PXA || ARCH_MMP
  	help
  	  Say yes here to support the PXA GPIO device

  config GPIO_XILINX
  	bool "Xilinx GPIO support"

  	depends on PPC_OF || MICROBLAZE

  	help
  	  Say yes here to support the Xilinx FPGA GPIO device

  config GPIO_VR41XX
  	tristate "NEC VR4100 series General-purpose I/O Uint support"
  	depends on CPU_VR41XX
  	help
  	  Say yes here to support the NEC VR4100 series General-purpose I/O Uint

  config GPIO_SCH

  	tristate "Intel SCH/TunnelCreek GPIO"

  	depends on PCI && X86

  	select MFD_CORE

  	select LPC_SCH
  	help

  	  Say yes here to support GPIO interface on Intel Poulsbo SCH
  	  or Intel Tunnel Creek processor.

  	  The Intel SCH contains a total of 14 GPIO pins. Ten GPIOs are
  	  powered by the core power rail and are turned off during sleep
  	  modes (S3 and higher). The remaining four GPIOs are powered by
  	  the Intel SCH suspend power supply. These GPIOs remain
  	  active during S3. The suspend powered GPIOs can be used to wake the
  	  system from the Suspend-to-RAM state.

  	  The Intel Tunnel Creek processor has 5 GPIOs powered by the
  	  core power rail and 9 from suspend power supply.

  config GPIO_VX855
  	tristate "VIA VX855/VX875 GPIO"

  	depends on PCI

  	select MFD_CORE
  	select MFD_VX855
  	help
  	  Support access to the VX855/VX875 GPIO lines through the gpio library.
  
  	  This driver provides common support for accessing the device,
  	  additional drivers must be enabled in order to use the
  	  functionality of the device.

  comment "I2C GPIO expanders:"

  config GPIO_MAX7300
  	tristate "Maxim MAX7300 GPIO expander"
  	depends on I2C
  	select GPIO_MAX730X
  	help
  	  GPIO driver for Maxim MAX7301 I2C-based GPIO expander.

  config GPIO_MAX732X
  	tristate "MAX7319, MAX7320-7327 I2C Port Expanders"
  	depends on I2C
  	help
  	  Say yes here to support the MAX7319, MAX7320-7327 series of I2C
  	  Port Expanders. Each IO port on these chips has a fixed role of
  	  Input (designated by 'I'), Push-Pull Output ('O'), or Open-Drain
  	  Input and Output (designed by 'P'). The combinations are listed
  	  below:
  
  	  8 bits:	max7319 (8I), max7320 (8O), max7321 (8P),
  		  	max7322 (4I4O), max7323 (4P4O)
  
  	  16 bits:	max7324 (8I8O), max7325 (8P8O),
  		  	max7326 (4I12O), max7327 (4P12O)
  
  	  Board setup code must specify the model to use, and the start
  	  number for these GPIOs.

  config GPIO_MAX732X_IRQ
  	bool "Interrupt controller support for MAX732x"
  	depends on GPIO_MAX732X=y && GENERIC_HARDIRQS
  	help
  	  Say yes here to enable the max732x to be used as an interrupt
  	  controller. It requires the driver to be built in the kernel.

  config GPIO_PCA953X

  	tristate "PCA953x, PCA955x, TCA64xx, and MAX7310 I/O ports"

  	depends on I2C
  	help

  	  Say yes here to provide access to several register-oriented
  	  SMBus I/O expanders, made mostly by NXP or TI.  Compatible
  	  models include:
  
  	  4 bits:	pca9536, pca9537

  	  8 bits:	max7310, pca9534, pca9538, pca9554, pca9557,
  	  		tca6408

  	  16 bits:	pca9535, pca9539, pca9555, tca6416

  config GPIO_PCA953X_IRQ
  	bool "Interrupt controller support for PCA953x"
  	depends on GPIO_PCA953X=y
  	help
  	  Say yes here to enable the pca953x to be used as an interrupt
  	  controller. It requires the driver to be built in the kernel.

  config GPIO_PCF857X

  	tristate "PCF857x, PCA{85,96}7x, and MAX732[89] I2C GPIO expanders"

  	depends on I2C
  	help
  	  Say yes here to provide access to most "quasi-bidirectional" I2C
  	  GPIO expanders used for additional digital outputs or inputs.
  	  Most of these parts are from NXP, though TI is a second source for
  	  some of them.  Compatible models include:
  
  	  8 bits:   pcf8574, pcf8574a, pca8574, pca8574a,

  	            pca9670, pca9672, pca9674, pca9674a,
  	  	    max7328, max7329

  
  	  16 bits:  pcf8575, pcf8575c, pca8575,
  	            pca9671, pca9673, pca9675
  
  	  Your board setup code will need to declare the expanders in
  	  use, and assign numbers to the GPIOs they expose.  Those GPIOs
  	  can then be used from drivers and other kernel code, just like
  	  other GPIOs, but only accessible from task contexts.
  
  	  This driver provides an in-kernel interface to those GPIOs using
  	  platform-neutral GPIO calls.

  config GPIO_SX150X
  	bool "Semtech SX150x I2C GPIO expander"
  	depends on I2C=y
  	default n
  	help
  	  Say yes here to provide support for Semtech SX150-series I2C
  	  GPIO expanders. Compatible models include:
  
  	  8 bits:  sx1508q
  	  16 bits: sx1509q

  config GPIO_STMPE
  	bool "STMPE GPIOs"
  	depends on MFD_STMPE
  	help
  	  This enables support for the GPIOs found on the STMPE I/O
  	  Expanders.

  config GPIO_TC3589X
  	bool "TC3589X GPIOs"
  	depends on MFD_TC3589X

  	help

  	  This enables support for the GPIOs found on the TC3589X

  	  I/O Expander.

  config GPIO_TPS65912
  	tristate "TI TPS65912 GPIO"
  	depends on (MFD_TPS65912_I2C || MFD_TPS65912_SPI)
  	help
  	  This driver supports TPS65912 gpio chip

  config GPIO_TWL4030
  	tristate "TWL4030, TWL5030, and TPS659x0 GPIOs"
  	depends on TWL4030_CORE
  	help
  	  Say yes here to access the GPIO signals of various multi-function
  	  power management chips from Texas Instruments.

  config GPIO_WM831X
  	tristate "WM831x GPIOs"
  	depends on MFD_WM831X
  	help
  	  Say yes here to access the GPIO signals of WM831x power management
  	  chips from Wolfson Microelectronics.

  config GPIO_WM8350
  	tristate "WM8350 GPIOs"
  	depends on MFD_WM8350
  	help
  	  Say yes here to access the GPIO signals of WM8350 power management
  	  chips from Wolfson Microelectronics.

  config GPIO_WM8994
  	tristate "WM8994 GPIOs"
  	depends on MFD_WM8994
  	help
  	  Say yes here to access the GPIO signals of WM8994 audio hub
  	  CODECs from Wolfson Microelectronics.

  config GPIO_ADP5520
  	tristate "GPIO Support for ADP5520 PMIC"
  	depends on PMIC_ADP5520
  	help
  	  This option enables support for on-chip GPIO found
  	  on Analog Devices ADP5520 PMICs.

  config GPIO_ADP5588
  	tristate "ADP5588 I2C GPIO expander"
  	depends on I2C
  	help
  	  This option enables support for 18 GPIOs found
  	  on Analog Devices ADP5588 GPIO Expanders.

  config GPIO_ADP5588_IRQ
  	bool "Interrupt controller support for ADP5588"
  	depends on GPIO_ADP5588=y
  	help
  	  Say yes here to enable the adp5588 to be used as an interrupt
  	  controller. It requires the driver to be built in the kernel.

  comment "PCI GPIO expanders:"

  config GPIO_CS5535
  	tristate "AMD CS5535/CS5536 GPIO support"

  	depends on PCI && X86 && MFD_CS5535

  	help
  	  The AMD CS5535 and CS5536 southbridges support 28 GPIO pins that
  	  can be used for quite a number of things.  The CS5535/6 is found on
  	  AMD Geode and Lemote Yeeloong devices.
  
  	  If unsure, say N.

  config GPIO_BT8XX
  	tristate "BT8XX GPIO abuser"
  	depends on PCI && VIDEO_BT848=n
  	help
  	  The BT8xx frame grabber chip has 24 GPIO pins than can be abused
  	  as a cheap PCI GPIO card.
  
  	  This chip can be found on Miro, Hauppauge and STB TV-cards.
  
  	  The card needs to be physically altered for using it as a
  	  GPIO card. For more information on how to build a GPIO card
  	  from a BT8xx TV card, see the documentation file at
  	  Documentation/bt8xxgpio.txt
  
  	  If unsure, say N.

  config GPIO_LANGWELL

  	bool "Intel Langwell/Penwell GPIO support"

  	depends on PCI && X86

  	help

  	  Say Y here to support Intel Langwell/Penwell GPIO.

  config GPIO_PCH

  	tristate "Intel EG20T PCH/LAPIS Semiconductor IOH(ML7223/ML7831) GPIO"

  	depends on PCI && X86

  	select GENERIC_IRQ_CHIP

  	help
  	  This driver is for PCH(Platform controller Hub) GPIO of Intel Topcliff
  	  which is an IOH(Input/Output Hub) for x86 embedded processor.
  	  This driver can access PCH GPIO device.

  	  This driver also can be used for LAPIS Semiconductor IOH(Input/
  	  Output Hub), ML7223 and ML7831.

  	  ML7223 IOH is for MP(Media Phone) use.

  	  ML7831 IOH is for general purpose use.
  	  ML7223/ML7831 is companion chip for Intel Atom E6xx series.
  	  ML7223/ML7831 is completely compatible for Intel EG20T PCH.

  config GPIO_ML_IOH
  	tristate "OKI SEMICONDUCTOR ML7213 IOH GPIO support"
  	depends on PCI

  	select GENERIC_IRQ_CHIP

  	help
  	  ML7213 is companion chip for Intel Atom E6xx series.
  	  This driver can be used for OKI SEMICONDUCTOR ML7213 IOH(Input/Output
  	  Hub) which is for IVI(In-Vehicle Infotainment) use.
  	  This driver can access the IOH's GPIO device.

  config GPIO_TIMBERDALE
  	bool "Support for timberdale GPIO IP"

  	depends on MFD_TIMBERDALE && HAS_IOMEM

  	---help---
  	Add support for the GPIO IP in the timberdale FPGA.

  config GPIO_RDC321X
  	tristate "RDC R-321x GPIO support"

  	depends on PCI

  	select MFD_CORE

  	select MFD_RDC321X
  	help
  	  Support for the RDC R321x SoC GPIOs over southbridge
  	  PCI configuration space.

  comment "SPI GPIO expanders:"

  config GPIO_MAX7301
  	tristate "Maxim MAX7301 GPIO expander"
  	depends on SPI_MASTER

  	select GPIO_MAX730X

  	help

  	  GPIO driver for Maxim MAX7301 SPI-based GPIO expander.

  config GPIO_MCP23S08

  	tristate "Microchip MCP23xxx I/O expander"
  	depends on SPI_MASTER || I2C

  	help

  	  SPI/I2C driver for Microchip MCP23S08/MCP23S17/MCP23008/MCP23017
  	  I/O expanders.

  	  This provides a GPIO interface supporting inputs and outputs.

  config GPIO_MC33880
  	tristate "Freescale MC33880 high-side/low-side switch"
  	depends on SPI_MASTER
  	help
  	  SPI driver for Freescale MC33880 high-side/low-side switch.
  	  This provides GPIO interface supporting inputs and outputs.

  config GPIO_74X164
  	tristate "74x164 serial-in/parallel-out 8-bits shift register"
  	depends on SPI_MASTER
  	help
  	  Platform driver for 74x164 compatible serial-in/parallel-out
  	  8-outputs shift registers. This driver can be used to provide access
  	  to more gpio outputs.

  comment "AC97 GPIO expanders:"
  
  config GPIO_UCB1400
  	bool "Philips UCB1400 GPIO"
  	depends on UCB1400_CORE
  	help
  	  This enables support for the Philips UCB1400 GPIO pins.
  	  The UCB1400 is an AC97 audio codec.

  comment "MODULbus GPIO expanders:"
  
  config GPIO_JANZ_TTL
  	tristate "Janz VMOD-TTL Digital IO Module"
  	depends on MFD_JANZ_CMODIO
  	help
  	  This enables support for the Janz VMOD-TTL Digital IO module.
  	  This driver provides support for driving the pins in output
  	  mode only. Input mode is not supported.

  config GPIO_AB8500

  	bool "ST-Ericsson AB8500 Mixed Signal Circuit gpio functions"

  	depends on AB8500_CORE && BROKEN

  	help
  	  Select this to enable the AB8500 IC GPIO driver

  
  config GPIO_TPS65910
  	bool "TPS65910 GPIO"
  	depends on MFD_TPS65910
  	help
  	  Select this option to enable GPIO driver for the TPS65910
  	  chip family.

  endif