# SPDX-License-Identifier: GPL-2.0-only
#
# GPIO infrastructure and drivers
#

config ARCH_HAVE_CUSTOM_GPIO_H
        bool
        help
          Selecting this config option from the architecture Kconfig allows
          the architecture to provide a custom asm/gpio.h implementation
          overriding the default implementations.  New uses of this are
          strongly discouraged.

menuconfig GPIOLIB
        bool "GPIO Support"
        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 GPIOLIB_FASTPATH_LIMIT
        int "Maximum number of GPIOs for fast path"
        range 32 512
        default 512
        help
          This adjusts the point at which certain APIs will switch from
          using a stack allocated buffer to a dynamically allocated buffer.

          You shouldn't need to change this unless you really need to
          optimize either stack space or performance. Change this carefully
          since setting an incorrect value could cause stack corruption.

config OF_GPIO
        def_bool y
        depends on OF
        depends on HAS_IOMEM

config GPIO_ACPI
        def_bool y
        depends on ACPI

config GPIOLIB_IRQCHIP
        select IRQ_DOMAIN
        bool

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
        help
          Say Y here to add the legacy sysfs interface for GPIOs.

          This ABI is deprecated. If you want to use GPIO from userspace,
          use the character device /dev/gpiochipN with the appropriate
          ioctl() operations instead. The character device is always
          available.

config GPIO_GENERIC
        depends on HAS_IOMEM # Only for IOMEM drivers
        tristate

config GPIO_REGMAP
        depends on REGMAP
        tristate

# put drivers in the right section, in alphabetical order

# This symbol is selected by both I2C and SPI expanders
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"
        depends on OF_GPIO
        select GPIO_GENERIC
        help
          Say yes here to support GPIO functionality for 74xx-compatible ICs
          with MMIO access. Compatible models include:
            1 bit:      741G125 (Input), 741G74 (Output)
            2 bits:     742G125 (Input), 7474 (Output)
            4 bits:     74125 (Input), 74175 (Output)
            6 bits:     74365 (Input), 74174 (Output)
            8 bits:     74244 (Input), 74273 (Output)
            16 bits:    741624 (Input), 7416374 (Output)

config GPIO_ALTERA
        tristate "Altera GPIO"
        depends on OF_GPIO
        select GPIOLIB_IRQCHIP
        help
          Say Y or M here to build support for the Altera PIO device.

          If driver is built as a module it will be called gpio-altera.

config GPIO_AMDPT
        tristate "AMD Promontory GPIO support"
        depends on ACPI
        select GPIO_GENERIC
        help
          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_ASPEED_SGPIO
        bool "Aspeed SGPIO support"
        depends on (ARCH_ASPEED || COMPILE_TEST) && OF_GPIO
        select GPIO_GENERIC
        select GPIOLIB_IRQCHIP
        help
          Say Y here to support Aspeed AST2500 SGPIO functionality.

config GPIO_ATH79
        tristate "Atheros AR71XX/AR724X/AR913X GPIO support"
        default y if ATH79
        depends on ATH79 || COMPILE_TEST
        select GPIO_GENERIC
        select GPIOLIB_IRQCHIP
        help
          Select this option to enable GPIO driver for
          Atheros AR71XX/AR724X/AR913X SoC devices.

config GPIO_RASPBERRYPI_EXP
        tristate "Raspberry Pi 3 GPIO Expander"
        default RASPBERRYPI_FIRMWARE
        depends on OF_GPIO
        # Make sure not 'y' when RASPBERRYPI_FIRMWARE is 'm'. This can only
        # happen when COMPILE_TEST=y, hence the added !RASPBERRYPI_FIRMWARE.
        depends on (ARCH_BCM2835 && RASPBERRYPI_FIRMWARE) || (COMPILE_TEST && !RASPBERRYPI_FIRMWARE)
        help
          Turn on GPIO support for the expander on Raspberry Pi 3 boards, using
          the firmware mailbox to communicate with VideoCore on BCM283x chips.

config GPIO_BCM_KONA
        bool "Broadcom Kona GPIO"
        depends on OF_GPIO && (ARCH_BCM_MOBILE || COMPILE_TEST)
        help
          Turn on GPIO support for Broadcom "Kona" chips.

config GPIO_BCM_XGS_IPROC
        tristate "BRCM XGS iProc GPIO support"
        depends on OF_GPIO && (ARCH_BCM_IPROC || COMPILE_TEST)
        select GPIO_GENERIC
        select GPIOLIB_IRQCHIP
        default ARCH_BCM_IPROC
        help
          Say yes here to enable GPIO support for Broadcom XGS iProc SoCs.

config GPIO_BRCMSTB
        tristate "BRCMSTB GPIO support"
        default y if (ARCH_BRCMSTB || BMIPS_GENERIC)
        depends on OF_GPIO && (ARCH_BRCMSTB || BMIPS_GENERIC || COMPILE_TEST)
        select GPIO_GENERIC
        select IRQ_DOMAIN
        help
          Say yes here to enable GPIO support for Broadcom STB (BCM7XXX) SoCs.

config GPIO_CADENCE
        tristate "Cadence GPIO support"
        depends on OF_GPIO
        select GPIO_GENERIC
        select GPIOLIB_IRQCHIP
        help
          Say yes here to enable support for Cadence GPIO controller.

config GPIO_CLPS711X
        tristate "CLPS711X GPIO support"
        depends on ARCH_CLPS711X || COMPILE_TEST
        select GPIO_GENERIC
        help
          Say yes here to support GPIO on CLPS711X SoCs.

config GPIO_DAVINCI
        bool "TI Davinci/Keystone GPIO support"
        default y if ARCH_DAVINCI
        depends on (ARM || ARM64) && (ARCH_DAVINCI || ARCH_KEYSTONE || ARCH_K3)
        help
          Say yes here to enable GPIO support for TI Davinci/Keystone SoCs.

config GPIO_DWAPB
        tristate "Synopsys DesignWare APB GPIO driver"
        select GPIO_GENERIC
        select GENERIC_IRQ_CHIP
        help
          Say Y or M here to build support for the Synopsys DesignWare APB
          GPIO block.

config GPIO_EIC_SPRD
        tristate "Spreadtrum EIC support"
        depends on ARCH_SPRD || COMPILE_TEST
        depends on OF_GPIO
        select GPIOLIB_IRQCHIP
        help
          Say yes here to support Spreadtrum EIC device.

config GPIO_EM
        tristate "Emma Mobile GPIO"
        depends on (ARCH_EMEV2 || COMPILE_TEST) && OF_GPIO
        help
          Say yes here to support GPIO on Renesas Emma Mobile SoCs.

config GPIO_EP93XX
        def_bool y
        depends on ARCH_EP93XX
        select GPIO_GENERIC
        select GPIOLIB_IRQCHIP

config GPIO_EXAR
        tristate "Support for GPIO pins on XR17V352/354/358"
        depends on SERIAL_8250_EXAR
        help
          Selecting this option will enable handling of GPIO pins present
          on Exar XR17V352/354/358 chips.

config GPIO_GE_FPGA
        bool "GE FPGA based GPIO"
        depends on GE_FPGA
        select GPIO_GENERIC
        help
          Support for common GPIO functionality provided on some GE Single Board
          Computers.

          This driver provides basic support (configure as input or output, read
          and write pin state) for GPIO implemented in a number of GE single
          board computers.

config GPIO_FTGPIO010
        bool "Faraday FTGPIO010 GPIO"
        depends on OF_GPIO
        select GPIO_GENERIC
        select GPIOLIB_IRQCHIP
        default (ARCH_GEMINI || ARCH_MOXART)
        help
          Support for common GPIOs from the Faraday FTGPIO010 IP core, found in
          Cortina systems Gemini platforms, Moxa ART and others.

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_GRGPIO
        tristate "Aeroflex Gaisler GRGPIO support"
        depends on OF_GPIO
        select GPIO_GENERIC
        select IRQ_DOMAIN
        help
          Select this to support Aeroflex Gaisler GRGPIO cores from the GRLIB
          VHDL IP core library.

config GPIO_HLWD
        tristate "Nintendo Wii (Hollywood) GPIO"
        depends on OF_GPIO
        select GPIO_GENERIC
        select GPIOLIB_IRQCHIP
        help
          Select this to support the GPIO controller of the Nintendo Wii.

          If unsure, say N.

config GPIO_ICH
        tristate "Intel ICH GPIO"
        depends on PCI && X86
        select MFD_CORE
        select LPC_ICH
        help
          Say yes here to support the GPIO functionality of a number of Intel
          ICH-based chipsets.  Currently supported devices: ICH6, ICH7, ICH8
          ICH9, ICH10, Series 5/3400 (eg Ibex Peak), Series 6/C200 (eg
          Cougar Point), NM10 (Tiger Point), and 3100 (Whitmore Lake).

          If unsure, say N.

config GPIO_IOP
        tristate "Intel IOP GPIO"
        depends on ARCH_IOP32X || COMPILE_TEST
        select GPIO_GENERIC
        help
          Say yes here to support the GPIO functionality of a number of Intel
          IOP32X or IOP33X.

          If unsure, say N.

config GPIO_IXP4XX
        bool "Intel IXP4xx GPIO"
        depends on ARM # For <asm/mach-types.h>
        depends on ARCH_IXP4XX
        select GPIO_GENERIC
        select GPIOLIB_IRQCHIP
        select IRQ_DOMAIN_HIERARCHY
        help
          Say yes here to support the GPIO functionality of a number of Intel
          IXP4xx series of chips.

          If unsure, say N.
config GPIO_LOGICVC
        tristate "Xylon LogiCVC GPIO support"
        depends on MFD_SYSCON && OF
        help
          Say yes here to support GPIO functionality of the Xylon LogiCVC
          programmable logic block.

config GPIO_LOONGSON
        bool "Loongson-2/3 GPIO support"
        depends on CPU_LOONGSON2EF || CPU_LOONGSON64
        help
          driver for GPIO functionality on Loongson-2F/3A/3B processors.

config GPIO_LPC18XX
        tristate "NXP LPC18XX/43XX GPIO support"
        default y if ARCH_LPC18XX
        depends on OF_GPIO && (ARCH_LPC18XX || COMPILE_TEST)
        select IRQ_DOMAIN_HIERARCHY
        help
          Select this option to enable GPIO driver for
          NXP LPC18XX/43XX devices.

config GPIO_LPC32XX
        tristate "NXP LPC32XX GPIO support"
        depends on OF_GPIO && (ARCH_LPC32XX || COMPILE_TEST)
        help
          Select this option to enable GPIO driver for
          NXP LPC32XX devices.

config GPIO_MB86S7X
        tristate "GPIO support for Fujitsu MB86S7x Platforms"
        help
          Say yes here to support the GPIO controller in Fujitsu MB86S70 SoCs.

config GPIO_MENZ127
        tristate "MEN 16Z127 GPIO support"
        depends on MCB
        select GPIO_GENERIC
        help
          Say yes here to support the MEN 16Z127 GPIO Controller

config GPIO_MM_LANTIQ
        bool "Lantiq Memory mapped GPIOs"
        depends on LANTIQ && SOC_XWAY
        help
          This enables support for memory mapped GPIOs on the External Bus Unit
          (EBU) found on Lantiq SoCs. The gpios are output only as they are
          created by attaching a 16bit latch to the bus.

config GPIO_MPC5200
        def_bool y
        depends on PPC_MPC52xx

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

config GPIO_MT7621
        bool "Mediatek MT7621 GPIO Support"
        depends on SOC_MT7620 || SOC_MT7621 || COMPILE_TEST
        depends on OF_GPIO
        select GPIO_GENERIC
        select GPIOLIB_IRQCHIP
        help
          Say yes here to support the Mediatek MT7621 SoC GPIO device

config GPIO_MVEBU
        def_bool y
        depends on PLAT_ORION || ARCH_MVEBU
        depends on OF_GPIO
        select GENERIC_IRQ_CHIP
        select REGMAP_MMIO

config GPIO_MXC
        def_bool y
        depends on ARCH_MXC || COMPILE_TEST
        select GPIO_GENERIC
        select GENERIC_IRQ_CHIP

config GPIO_MXS
        def_bool y
        depends on ARCH_MXS || COMPILE_TEST
        select GPIO_GENERIC
        select GENERIC_IRQ_CHIP

config GPIO_OCTEON
        tristate "Cavium OCTEON GPIO"
        depends on CAVIUM_OCTEON_SOC
        default y
        help
          Say yes here to support the on-chip GPIO lines on the OCTEON
          family of SOCs.

config GPIO_OMAP
        tristate "TI OMAP GPIO support" if ARCH_OMAP2PLUS || COMPILE_TEST
        default y if ARCH_OMAP
        depends on ARM
        select GENERIC_IRQ_CHIP
        select GPIOLIB_IRQCHIP
        help
          Say yes here to enable GPIO support for TI OMAP SoCs.

config GPIO_PL061
        tristate "PrimeCell PL061 GPIO support"
        depends on ARM_AMBA
        select IRQ_DOMAIN
        select GPIOLIB_IRQCHIP
        help
          Say yes here to support the PrimeCell PL061 GPIO device

config GPIO_PMIC_EIC_SPRD
        tristate "Spreadtrum PMIC EIC support"
        depends on MFD_SC27XX_PMIC || COMPILE_TEST
        depends on OF_GPIO
        select GPIOLIB_IRQCHIP
        help
          Say yes here to support Spreadtrum PMIC EIC device.

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

config GPIO_RCAR
        tristate "Renesas R-Car GPIO"
        depends on ARCH_RENESAS || COMPILE_TEST
        select GPIOLIB_IRQCHIP
        help
          Say yes here to support GPIO on Renesas R-Car SoCs.

config GPIO_RDA
        bool "RDA Micro GPIO controller support"
        depends on ARCH_RDA || COMPILE_TEST
        depends on OF_GPIO
        select GPIO_GENERIC
        select GPIOLIB_IRQCHIP
        help
          Say Y here to support RDA Micro GPIO controller.

config GPIO_REG
        bool
        help
          A 32-bit single register GPIO fixed in/out implementation.  This
          can be used to represent any register as a set of GPIO signals.

config GPIO_SAMA5D2_PIOBU
        tristate "SAMA5D2 PIOBU GPIO support"
        depends on MFD_SYSCON
        depends on OF_GPIO
        select GPIO_SYSCON
        help
          Say yes here to use the PIOBU pins as GPIOs.

          PIOBU pins on the SAMA5D2 can be used as GPIOs.
          The difference from regular GPIOs is that they
          maintain their value during backup/self-refresh.

config GPIO_SIFIVE
        bool "SiFive GPIO support"
        depends on OF_GPIO && IRQ_DOMAIN_HIERARCHY
        select GPIO_GENERIC
        select GPIOLIB_IRQCHIP
        select REGMAP_MMIO
        help
          Say yes here to support the GPIO device on SiFive SoCs.

config GPIO_SIOX
        tristate "SIOX GPIO support"
        depends on SIOX
        select GPIOLIB_IRQCHIP
        help
          Say yes here to support SIOX I/O devices. These are units connected
          via a SIOX bus and have a number of fixed-direction I/O lines.

config GPIO_SNPS_CREG
        bool "Synopsys GPIO via CREG (Control REGisters) driver"
        depends on ARC || COMPILE_TEST
        depends on OF_GPIO
        help
          This driver supports GPIOs via CREG on various Synopsys SoCs.
          This is a single-register MMIO GPIO driver for complex cases
          where only several fields in register belong to GPIO lines and
          each GPIO line owns a field with different length and on/off value.

config GPIO_SPEAR_SPICS
        bool "ST SPEAr13xx SPI Chip Select as GPIO support"
        depends on PLAT_SPEAR
        select GENERIC_IRQ_CHIP
        help
          Say yes here to support ST SPEAr SPI Chip Select as GPIO device

config GPIO_SPRD
        tristate "Spreadtrum GPIO support"
        depends on ARCH_SPRD || COMPILE_TEST
        depends on OF_GPIO
        select GPIOLIB_IRQCHIP
        help
          Say yes here to support Spreadtrum GPIO device.

config GPIO_STA2X11
        bool "STA2x11/ConneXt GPIO support"
        depends on MFD_STA2X11
        select GENERIC_IRQ_CHIP
        help
          Say yes here to support the STA2x11/ConneXt GPIO device.
          The GPIO module has 128 GPIO pins with alternate functions.

config GPIO_STP_XWAY
        bool "XWAY STP GPIOs"
        depends on SOC_XWAY || COMPILE_TEST
        depends on OF_GPIO
        help
          This enables support for the Serial To Parallel (STP) unit found on
          XWAY SoC. The STP allows the SoC to drive a shift registers cascade,
          that can be up to 24 bit. This peripheral is aimed at driving leds.
          Some of the gpios/leds can be auto updated by the soc with dsl and
          phy status.

config GPIO_SYSCON
        tristate "GPIO based on SYSCON"
        depends on MFD_SYSCON && OF
        help
          Say yes here to support GPIO functionality though SYSCON driver.

config GPIO_TB10X
        bool
        select GPIO_GENERIC
        select GENERIC_IRQ_CHIP
        select OF_GPIO

config GPIO_TEGRA
        bool "NVIDIA Tegra GPIO support"
        default ARCH_TEGRA
        depends on ARCH_TEGRA || COMPILE_TEST
        depends on OF_GPIO
        help
          Say yes here to support GPIO pins on NVIDIA Tegra SoCs.

config GPIO_TEGRA186
        tristate "NVIDIA Tegra186 GPIO support"
        default ARCH_TEGRA_186_SOC || ARCH_TEGRA_194_SOC
        depends on ARCH_TEGRA_186_SOC || ARCH_TEGRA_194_SOC || COMPILE_TEST
        depends on OF_GPIO
        select GPIOLIB_IRQCHIP
        select IRQ_DOMAIN_HIERARCHY
        help
          Say yes here to support GPIO pins on NVIDIA Tegra186 SoCs.

config GPIO_TS4800
        tristate "TS-4800 DIO blocks and compatibles"
        depends on OF_GPIO
        depends on SOC_IMX51 || COMPILE_TEST
        select GPIO_GENERIC
        help
          This driver support TS-4800 FPGA GPIO controllers.

config GPIO_THUNDERX
        tristate "Cavium ThunderX/OCTEON-TX GPIO"
        depends on ARCH_THUNDER || (64BIT && COMPILE_TEST)
        depends on PCI_MSI
        select GPIOLIB_IRQCHIP
        select IRQ_DOMAIN_HIERARCHY
        select IRQ_FASTEOI_HIERARCHY_HANDLERS
        help
          Say yes here to support the on-chip GPIO lines on the ThunderX
          and OCTEON-TX families of SoCs.

config GPIO_UNIPHIER
        tristate "UniPhier GPIO support"
        depends on ARCH_UNIPHIER || COMPILE_TEST
        depends on OF_GPIO
        select IRQ_DOMAIN_HIERARCHY
        help
          Say yes here to support UniPhier GPIOs.

config GPIO_VF610
        def_bool y
        depends on ARCH_MXC && SOC_VF610
        select GPIOLIB_IRQCHIP
        help
          Say yes here to support Vybrid vf610 GPIOs.

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_VX855
        tristate "VIA VX855/VX875 GPIO"
        depends on (X86 || COMPILE_TEST) && 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.

config GPIO_WCD934X
        tristate "Qualcomm Technologies Inc WCD9340/WCD9341 gpio controller driver"
        depends on MFD_WCD934X && OF_GPIO
        help
         This driver is to supprot GPIO block found on the Qualcomm Technologies
         Inc WCD9340/WCD9341 Audio Codec.

config GPIO_XGENE
        bool "APM X-Gene GPIO controller support"
        depends on ARM64 && OF_GPIO
        help
          This driver is to support the GPIO block within the APM X-Gene SoC
          platform's generic flash controller. The GPIO pins are muxed with
          the generic flash controller's address and data pins. Say yes
          here to enable the GFC GPIO functionality.

config GPIO_XGENE_SB
        tristate "APM X-Gene GPIO standby controller support"
        depends on (ARCH_XGENE || COMPILE_TEST)
        select GPIO_GENERIC
        select GPIOLIB_IRQCHIP
        select IRQ_DOMAIN_HIERARCHY
        help
          This driver supports the GPIO block within the APM X-Gene
          Standby Domain. Say yes here to enable the GPIO functionality.

config GPIO_XILINX
        tristate "Xilinx GPIO support"
        help
          Say yes here to support the Xilinx FPGA GPIO device

config GPIO_XLP
        tristate "Netlogic XLP GPIO support"
        depends on OF_GPIO && (CPU_XLP || ARCH_THUNDER2 || COMPILE_TEST)
        select GPIOLIB_IRQCHIP
        help
          This driver provides support for GPIO interface on Netlogic XLP MIPS64
          SoCs. Currently supported XLP variants are XLP8XX, XLP3XX, XLP2XX,
          XLP9XX and XLP5XX. The same GPIO controller block is also present in
          Cavium's ThunderX2 CN99XX SoCs.

          If unsure, say N.

config GPIO_XTENSA
        bool "Xtensa GPIO32 support"
        depends on XTENSA
        depends on HAVE_XTENSA_GPIO32
        depends on !SMP
        help
          Say yes here to support the Xtensa internal GPIO32 IMPWIRE (input)
          and EXPSTATE (output) ports

config GPIO_ZEVIO
        bool "LSI ZEVIO SoC memory mapped GPIOs"
        depends on ARM && OF_GPIO
        help
          Say yes here to support the GPIO controller in LSI ZEVIO SoCs.

config GPIO_ZYNQ
        tristate "Xilinx Zynq GPIO support"
        depends on ARCH_ZYNQ || ARCH_ZYNQMP
        select GPIOLIB_IRQCHIP
        help
          Say yes here to support Xilinx Zynq GPIO controller.

config GPIO_ZX
        bool "ZTE ZX GPIO support"
        depends on ARCH_ZX || COMPILE_TEST
        select GPIOLIB_IRQCHIP
        help
          Say yes here to support the GPIO device on ZTE ZX SoCs.

config GPIO_LOONGSON1
        tristate "Loongson1 GPIO support"
        depends on MACH_LOONGSON32
        select GPIO_GENERIC
        help
          Say Y or M here to support GPIO on Loongson1 SoCs.

config GPIO_AMD_FCH
        tristate "GPIO support for AMD Fusion Controller Hub (G-series SOCs)"
        help
          This option enables driver for GPIO on AMDs Fusion Controller Hub,
          as found on G-series SOCs (eg. GX-412TC)

          Note: This driver doesn't registers itself automatically, as it
          needs to be provided with platform specific configuration.
          (See eg. CONFIG_PCENGINES_APU2.)
endmenu

menu "Port-mapped I/O GPIO drivers"
        depends on X86 # Unconditional I/O space access

config GPIO_104_DIO_48E
        tristate "ACCES 104-DIO-48E GPIO support"
        depends on PC104
        select ISA_BUS_API
        select GPIOLIB_IRQCHIP
        help
          Enables GPIO support for the ACCES 104-DIO-48E series (104-DIO-48E,
          104-DIO-24E). The base port addresses for the devices may be
          configured via the base module parameter. The interrupt line numbers
          for the devices may be configured via the irq module parameter.

config GPIO_104_IDIO_16
        tristate "ACCES 104-IDIO-16 GPIO support"
        depends on PC104
        select ISA_BUS_API
        select GPIOLIB_IRQCHIP
        help
          Enables GPIO support for the ACCES 104-IDIO-16 family (104-IDIO-16,
          104-IDIO-16E, 104-IDO-16, 104-IDIO-8, 104-IDIO-8E, 104-IDO-8). The
          base port addresses for the devices may be configured via the base
          module parameter. The interrupt line numbers for the devices may be
          configured via the irq module parameter.

config GPIO_104_IDI_48
        tristate "ACCES 104-IDI-48 GPIO support"
        depends on PC104
        select ISA_BUS_API
        select GPIOLIB_IRQCHIP
        help
          Enables GPIO support for the ACCES 104-IDI-48 family (104-IDI-48A,
          104-IDI-48AC, 104-IDI-48B, 104-IDI-48BC). The base port addresses for
          the devices may be configured via the base module parameter. The
          interrupt line numbers for the devices may be configured via the irq
          module parameter.

config GPIO_F7188X
        tristate "F71869, F71869A, F71882FG, F71889F and F81866 GPIO support"
        help
          This option enables support for GPIOs found on Fintek Super-I/O
          chips F71869, F71869A, F71882FG, F71889F and F81866.

          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 PC104
        select 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
          Say yes here to support GPIO functionality of IT87xx Super I/O chips.

          This driver is tested with ITE IT8728 and IT8732 Super I/O chips, and
          supports the IT8761E, IT8613, IT8620E, and IT8628E Super I/O chips as
          well.

          To compile this driver as a module, choose M here: the module will
          be called gpio_it87

config GPIO_SCH
        tristate "Intel SCH/TunnelCreek/Centerton/Quark X1000 GPIO"
        depends on (X86 || COMPILE_TEST) && PCI
        select MFD_CORE
        select LPC_SCH
        help
          Say yes here to support GPIO interface on Intel Poulsbo SCH,
          Intel Tunnel Creek processor, Intel Centerton processor or
          Intel Quark X1000 SoC.

          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.

          The Intel Centerton processor has a total of 30 GPIO pins.
          Twenty-one are powered by the core power rail and 9 from the
          suspend power supply.

          The Intel Quark X1000 SoC has 2 GPIOs powered by the core
          power well and 6 from the suspend power well.

config GPIO_SCH311X
        tristate "SMSC SCH311x SuperI/O GPIO"
        help
          Driver to enable the GPIOs found on SMSC SMSC SCH3112, SCH3114 and
          SCH3116 "Super I/O" chipsets.

          To compile this driver as a module, choose M here: the module will
          be called gpio-sch311x.

config GPIO_TS5500
        tristate "TS-5500 DIO blocks and compatibles"
        depends on TS5500 || COMPILE_TEST
        help
          This driver supports Digital I/O exposed by pin blocks found on some
          Technologic Systems platforms. It includes, but is not limited to, 3
          blocks of the TS-5500: DIO1, DIO2 and the LCD port, and the TS-5600
          LCD port.

config GPIO_WINBOND
        tristate "Winbond Super I/O GPIO support"
        select ISA_BUS_API
        help
          This option enables support for GPIOs found on Winbond Super I/O
          chips.
          Currently, only W83627UHG (also known as Nuvoton NCT6627UD) is
          supported.

          You will need to provide a module parameter "gpios", or a
          boot-time parameter "gpio_winbond.gpios" with a bitmask of GPIO
          ports to enable (bit 0 is GPIO1, bit 1 is GPIO2, etc.).

          To compile this driver as a module, choose M here: the module will
          be called gpio-winbond.

config GPIO_WS16C48
        tristate "WinSystems WS16C48 GPIO support"
        select ISA_BUS_API
        select GPIOLIB_IRQCHIP
        help
          Enables GPIO support for the WinSystems WS16C48. The base port
          addresses for the devices may be configured via the base module
          parameter. The interrupt line numbers for the devices may be
          configured via the irq module parameter.

endmenu

menu "I2C GPIO expanders"
        depends on I2C

config GPIO_ADP5588
        tristate "ADP5588 I2C GPIO expander"
        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
        select GPIOLIB_IRQCHIP
        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.

config GPIO_ADNP
        tristate "Avionic Design N-bit GPIO expander"
        depends on OF_GPIO
        select GPIOLIB_IRQCHIP
        help
          This option enables support for N GPIOs found on Avionic Design
          I2C GPIO expanders. The register space will be extended by powers
          of two, so the controller will need to accommodate for that. For
          example: if a controller provides 48 pins, 6 registers will be
          enough to represent all pins, but the driver will assume a
          register layout for 64 pins (8 registers).

config GPIO_GW_PLD
        tristate "Gateworks PLD GPIO Expander"
        depends on OF_GPIO
        help
          Say yes here to provide access to the Gateworks I2C PLD GPIO
          Expander. This is used at least on the Cambria GW2358-4.

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

config GPIO_MAX732X
        tristate "MAX7319, MAX7320-7327 I2C Port Expanders"
        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
        select GPIOLIB_IRQCHIP
        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_MC9S08DZ60
        bool "MX35 3DS BOARD MC9S08DZ60 GPIO functions"
        depends on I2C=y && MACH_MX35_3DS
        help
          Select this to enable the MC9S08DZ60 GPIO driver

config GPIO_PCA953X
        tristate "PCA95[357]x, PCA9698, TCA64xx, and MAX7310 I/O ports"
        select REGMAP_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, max7315, pca6107, pca9534, pca9538, pca9554,
                        pca9556, pca9557, pca9574, tca6408, tca9554, xra1202

          16 bits:      max7312, max7313, pca9535, pca9539, pca9555, pca9575,
                        tca6416

          24 bits:      tca6424

          40 bits:      pca9505, pca9698

config GPIO_PCA953X_IRQ
        bool "Interrupt controller support for PCA953x"
        depends on GPIO_PCA953X
        select GPIOLIB_IRQCHIP
        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_PCA9570
        tristate "PCA9570 4-Bit I2C GPO expander"
        help
          Say yes here to enable the GPO driver for the NXP PCA9570 chip.

          To compile this driver as a module, choose M here: the module will
          be called gpio-pca9570.

config GPIO_PCF857X
        tristate "PCF857x, PCA{85,96}7x, and MAX732[89] I2C GPIO expanders"
        select GPIOLIB_IRQCHIP
        select IRQ_DOMAIN
        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_TPIC2810
        tristate "TPIC2810 8-Bit I2C GPO expander"
        help

          Say yes here to enable the GPO driver for the TI TPIC2810 chip.

          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"
        depends on SOC_IMX6 || COMPILE_TEST
        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"

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_ALTERA_A10SR
        tristate "Altera Arria10 System Resource GPIO"
        depends on MFD_ALTERA_A10SR
        help
          Driver for Arria10 Development Kit GPIO expansion which
          includes reads of pushbuttons and DIP switches as well
          as writes to LEDs.

config GPIO_ARIZONA
        tristate "Wolfson Microelectronics Arizona class devices"
        depends on MFD_ARIZONA
        help
          Support for GPIOs on Wolfson Arizona class devices.

config GPIO_BD70528
        tristate "ROHM BD70528 GPIO support"
        depends on MFD_ROHM_BD70528
        help
          Support for GPIOs on ROHM BD70528 PMIC. There are four GPIOs
          available on the ROHM PMIC in total. The GPIOs can also
          generate interrupts.

          This driver can also be built as a module. If so, the module
          will be called gpio-bd70528.

config GPIO_BD71828
        tristate "ROHM BD71828 GPIO support"
        depends on MFD_ROHM_BD71828
        help
          Support for GPIOs on ROHM BD71828 PMIC. There are three GPIOs
          available on the ROHM PMIC in total. The GPIOs are limited to
          outputs only and pins must be configured to GPIO outputs by
          OTP. Enable this only if you want to use these pins as outputs.

          This driver can also be built as a module. If so, the module
          will be called gpio-bd71828.

config GPIO_BD9571MWV
        tristate "ROHM BD9571 GPIO support"
        depends on MFD_BD9571MWV
        help
          Support for GPIOs on ROHM BD9571 PMIC. There are two GPIOs
          available on the ROHM PMIC in total, both of which can also
          generate interrupts.

          This driver can also be built as a module. If so, the module
          will be called gpio-bd9571mwv.

config GPIO_CRYSTAL_COVE
        tristate "GPIO support for Crystal Cove PMIC"
        depends on (X86 || COMPILE_TEST) && INTEL_SOC_PMIC
        select GPIOLIB_IRQCHIP
        help
          Support for GPIO pins on Crystal Cove PMIC.

          Say Yes if you have a Intel SoC based tablet with Crystal Cove PMIC
          inside.

          This driver can also be built as a module. If so, the module will be
          called gpio-crystalcove.

config GPIO_CS5535
        tristate "AMD CS5535/CS5536 GPIO support"
        depends on X86 || MIPS || COMPILE_TEST
        depends on 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_DA9052
        tristate "Dialog DA9052 GPIO"
        depends on PMIC_DA9052
        help
          Say yes here to enable the GPIO driver for the DA9052 chip.

config GPIO_DA9055
        tristate "Dialog Semiconductor DA9055 GPIO"
        depends on MFD_DA9055
        help
          Say yes here to enable the GPIO driver for the DA9055 chip.

          The Dialog DA9055 PMIC chip has 3 GPIO pins that can be
          be controller by this driver.

          If driver is built as a module it will be called gpio-da9055.

config GPIO_DLN2
        tristate "Diolan DLN2 GPIO support"
        depends on MFD_DLN2
        select GPIOLIB_IRQCHIP

        help
          Select this option to enable GPIO driver for the Diolan DLN2
          board.

          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 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
        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_KEMPLD
        tristate "Kontron ETX / COMexpress GPIO"
        depends on MFD_KEMPLD
        help
          This enables support for the PLD GPIO interface on some Kontron ETX
          and COMexpress (ETXexpress) modules.

          This driver can also be built as a module. If so, the module will be
          called gpio-kempld.

config GPIO_LP3943
        tristate "TI/National Semiconductor LP3943 GPIO expander"
        depends on MFD_LP3943
        help
          GPIO driver for LP3943 MFD.
          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_LP87565
        tristate "TI LP87565 GPIO"
        depends on MFD_TI_LP87565
        help
          This driver supports the GPIO on TI Lp873565 PMICs. 3 GPIOs are present
          on LP87565 PMICs.

          This driver can also be built as a module. If so, the module will be
          called gpio-lp87565.

config GPIO_MADERA
        tristate "Cirrus Logic Madera class codecs"
        depends on PINCTRL_MADERA
        help
          Support for GPIOs on Cirrus Logic Madera class codecs.

config GPIO_MAX77620
        tristate "GPIO support for PMIC MAX77620 and MAX20024"
        depends on MFD_MAX77620
        select GPIOLIB_IRQCHIP
        help
          GPIO driver for MAX77620 and MAX20024 PMIC from Maxim Semiconductor.
          MAX77620 PMIC has 8 pins that can be configured as GPIOs. The
          driver also provides interrupt support for each of the gpios.
          Say yes here to enable the max77620 to be used as gpio controller.

config GPIO_MAX77650
        tristate "Maxim MAX77650/77651 GPIO support"
        depends on MFD_MAX77650
        help
          GPIO driver for MAX77650/77651 PMIC from Maxim Semiconductor.
          These chips have a single pin that can be configured as GPIO.

config GPIO_MSIC
        bool "Intel MSIC mixed signal gpio support"
        depends on (X86 || COMPILE_TEST) && MFD_INTEL_MSIC
        help
          Enable support for GPIO on intel MSIC controllers found in
          intel MID devices

config GPIO_PALMAS
        bool "TI PALMAS series PMICs GPIO"
        depends on MFD_PALMAS
        help
          Select this option to enable GPIO driver for the TI PALMAS
          series chip family.

config GPIO_RC5T583
        bool "RICOH RC5T583 GPIO"
        depends on MFD_RC5T583
        help
          Select this option to enable GPIO driver for the Ricoh RC5T583
          chip family.
          This driver provides the support for driving/reading the gpio pins
          of RC5T583 device through standard gpio library.

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

config GPIO_TC3589X
        bool "TC3589X GPIOs"
        depends on MFD_TC3589X
        depends on OF_GPIO
        select GPIOLIB_IRQCHIP
        help
          This enables support for the GPIOs found on the TC3589X
          I/O Expander.

config GPIO_TIMBERDALE
        bool "Support for timberdale GPIO IP"
        depends on MFD_TIMBERDALE
        help
        Add support for the GPIO IP in the timberdale FPGA.

config GPIO_TPS65086
        tristate "TI TPS65086 GPO"
        depends on MFD_TPS65086
        help
          This driver supports the GPO on TI TPS65086x PMICs.

config GPIO_TPS65218
        tristate "TPS65218 GPIO"
        depends on MFD_TPS65218
        help
          Select this option to enable GPIO driver for the TPS65218
          chip family.

config GPIO_TPS6586X
        bool "TPS6586X GPIO"
        depends on MFD_TPS6586X
        help
          Select this option to enable GPIO driver for the TPS6586X
          chip family.

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

config GPIO_TPS65912
        tristate "TI TPS65912 GPIO"
        depends on MFD_TPS65912
        help
          This driver supports TPS65912 gpio chip

config GPIO_TPS68470
        bool "TPS68470 GPIO"
        depends on MFD_TPS68470
        help
          Select this option to enable GPIO driver for the TPS68470
          chip family.
          There are 7 GPIOs and few sensor related GPIOs supported
          by the TPS68470. While the 7 GPIOs can be configured as
          input or output as appropriate, the sensor related GPIOs
          are "output only" GPIOs.

          This driver config is bool, as the GPIO functionality
          of the TPS68470 must be available before dependent
          drivers are loaded.

config GPIO_TQMX86
        tristate "TQ-Systems QTMX86 GPIO"
        depends on MFD_TQMX86 || COMPILE_TEST
        select GPIOLIB_IRQCHIP
        help
          This driver supports GPIO on the TQMX86 IO controller.

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_TWL6040
        tristate "TWL6040 GPO"
        depends on TWL6040_CORE
        help
          Say yes here to access the GPO signals of twl6040
          audio chip from Texas Instruments.

config GPIO_UCB1400
        tristate "Philips UCB1400 GPIO"
        depends on UCB1400_CORE
        help
          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 (X86 || COMPILE_TEST) && INTEL_SOC_PMIC_BXTWC
        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
        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.

endmenu

menu "PCI GPIO expanders"
        depends on PCI

config GPIO_AMD8111
        tristate "AMD 8111 GPIO driver"
        depends on X86 || COMPILE_TEST
        help
          The AMD 8111 south bridge contains 32 GPIO pins which can be used.

          Note, that usually system firmware/ACPI handles GPIO pins on their
          own and users might easily break their systems with uncarefull usage
          of this driver!

          If unsure, say N

config GPIO_BT8XX
        tristate "BT8XX GPIO abuser"
        depends on VIDEO_BT848=n
        help
          The BT8xx frame grabber chip has 24 GPIO pins that 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/driver-api/gpio/bt8xxgpio.rst

          If unsure, say N.

config GPIO_INTEL_MID
        bool "Intel MID GPIO support"
        depends on X86_INTEL_MID
        select GPIOLIB_IRQCHIP
        help
          Say Y here to support Intel MID GPIO.

config GPIO_MERRIFIELD
        tristate "Intel Merrifield GPIO support"
        depends on X86_INTEL_MID
        select GPIOLIB_IRQCHIP
        help
          Say Y here to support Intel Merrifield GPIO.

config GPIO_MLXBF
        tristate "Mellanox BlueField SoC GPIO"
        depends on (MELLANOX_PLATFORM && ARM64 && ACPI) || (64BIT && COMPILE_TEST)
        select GPIO_GENERIC
        help
          Say Y here if you want GPIO support on Mellanox BlueField SoC.

config GPIO_MLXBF2
        tristate "Mellanox BlueField 2 SoC GPIO"
        depends on (MELLANOX_PLATFORM && ARM64 && ACPI) || (64BIT && COMPILE_TEST)
        select GPIO_GENERIC
        help
          Say Y here if you want GPIO support on Mellanox BlueField 2 SoC.

config GPIO_ML_IOH
        tristate "OKI SEMICONDUCTOR ML7213 IOH GPIO support"
        depends on X86 || COMPILE_TEST
        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_PCH
        tristate "Intel EG20T PCH/LAPIS Semiconductor IOH(ML7223/ML7831) GPIO"
        depends on X86_32 || MIPS || COMPILE_TEST
        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_PCI_IDIO_16
        tristate "ACCES PCI-IDIO-16 GPIO support"
        select GPIOLIB_IRQCHIP
        help
          Enables GPIO support for the ACCES PCI-IDIO-16. An interrupt is
          generated when any of the inputs change state (low to high or high to
          low). Input filter control is not supported by this driver, and the
          input filters are deactivated by this driver.

config GPIO_PCIE_IDIO_24
        tristate "ACCES PCIe-IDIO-24 GPIO support"
        select GPIOLIB_IRQCHIP
        help
          Enables GPIO support for the ACCES PCIe-IDIO-24 family (PCIe-IDIO-24,
          PCIe-IDI-24, PCIe-IDO-24, PCIe-IDIO-12). An interrupt is generated
          when any of the inputs change state (low to high or high to low).
          Input filter control is not supported by this driver, and the input
          filters are deactivated by this driver.

config GPIO_RDC321X
        tristate "RDC R-321x GPIO support"
        select MFD_CORE
        select MFD_RDC321X
        help
          Support for the RDC R321x SoC GPIOs over southbridge
          PCI configuration space.

config GPIO_SODAVILLE
        bool "Intel Sodaville GPIO support"
        depends on X86 && OF
        select GPIO_GENERIC
        select GENERIC_IRQ_CHIP
        help
          Say Y here to support Intel Sodaville GPIO.

endmenu

menu "SPI GPIO expanders"
        depends on SPI_MASTER

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

config GPIO_MAX3191X
        tristate "Maxim MAX3191x industrial serializer"
        select CRC8
        help
          GPIO driver for Maxim MAX31910, MAX31911, MAX31912, MAX31913,
          MAX31953 and MAX31963 industrial serializer, a daisy-chainable
          chip to make 8 digital 24V inputs available via SPI.  Supports
          CRC checksums to guard against electromagnetic interference,
          as well as undervoltage and overtemperature detection.

config GPIO_MAX7301
        tristate "Maxim MAX7301 GPIO expander"
        select GPIO_MAX730X
        help
          GPIO driver for Maxim MAX7301 SPI-based GPIO expander.

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

config GPIO_PISOSR
        tristate "Generic parallel-in/serial-out shift register"
        help
          GPIO driver for SPI compatible parallel-in/serial-out shift
          registers. These are input only devices.

config GPIO_XRA1403
        tristate "EXAR XRA1403 16-bit GPIO expander"
        select REGMAP_SPI
        help
          GPIO driver for EXAR XRA1403 16-bit SPI-based GPIO expander.

config GPIO_MOXTET
        tristate "Turris Mox Moxtet bus GPIO expander"
        depends on MOXTET
        help
          Say yes here if you are building for the Turris Mox router.
          This is the driver needed for configuring the GPIOs via the Moxtet
          bus. For example the Mox module with SFP cage needs this driver
          so that phylink can use corresponding GPIOs.

endmenu

menu "USB GPIO expanders"
        depends on USB

config GPIO_VIPERBOARD
        tristate "Viperboard GPIO a & b support"
        depends on MFD_VIPERBOARD
        help
          Say yes here to access the GPIO signals of Nano River
          Technologies Viperboard. There are two GPIO chips on the
          board: gpioa and gpiob.
          See viperboard API specification and Nano
          River Tech's viperboard.h for detailed meaning
          of the module parameters.

endmenu

config GPIO_AGGREGATOR
        tristate "GPIO Aggregator"
        help
          Say yes here to enable the GPIO Aggregator, which provides a way to
          aggregate existing GPIO lines into a new virtual GPIO chip.
          This can serve the following purposes:
            - Assign permissions for a collection of GPIO lines to a user,
            - Export a collection of GPIO lines to a virtual machine,
            - Provide a generic driver for a GPIO-operated device in an
              industrial control context, to be operated from userspace using
              the GPIO chardev interface.

config GPIO_MOCKUP
        tristate "GPIO Testing Driver"
        select IRQ_SIM
        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.

endif