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Kconfig
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# 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)" if EXPERT
depends on SYSFS
select GPIO_CDEV # We need to encourage the new ABI
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.
config GPIO_CDEV
bool
prompt "Character device (/dev/gpiochipN) support" if EXPERT
default y
help
Say Y here to add the character device /dev/gpiochipN interface
for GPIOs. The character device allows userspace to control GPIOs
using ioctl() operations.
Only say N if you are sure that the GPIO character device is not
required.
If unsure, say Y.
config GPIO_CDEV_V1
bool "Support GPIO ABI Version 1"
default y
depends on GPIO_CDEV
help
Say Y here to support version 1 of the GPIO CDEV ABI.
This ABI version is deprecated.
Please use the latest ABI for new developments.
If unsure, say Y.
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
config GPIO_IDIO_16
tristate
help
Enables support for the idio-16 library functions. The idio-16 library
provides functions to facilitate communication with devices within the
ACCES IDIO-16 family such as the 104-IDIO-16 and the PCI-IDIO-16.
If built as a module its name will be gpio-idio-16.
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.
Requires 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
tristate "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 GPIOLIB_IRQCHIP
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_EN7523
tristate "Airoha GPIO support"
depends on ARCH_AIROHA
default ARCH_AIROHA
select GPIO_GENERIC
select GPIOLIB_IRQCHIP
help
Say Y or M here to support the GPIO controller block on the
Airoha EN7523 SoC. It supports two banks of 32 GPIOs.
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
select REGMAP_MMIO
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_HISI
tristate "HiSilicon GPIO controller driver"
depends on ARM64 || COMPILE_TEST
select GPIO_GENERIC
select GPIOLIB_IRQCHIP
help
Say Y or M here to build support for the HiSilicon GPIO controller
driver GPIO block.
This GPIO controller supports double-edge interrupt and multi-core
concurrent access.
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 X86
depends on 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 (e.g. Ibex Peak), Series 6/C200 (e.g.
Cougar Point), NM10 (Tiger Point), and 3100 (Whitmore Lake).
If unsure, say N.
config GPIO_IMX_SCU
def_bool y
depends on IMX_SCU
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 series of chips.
If unsure, say N.
config GPIO_IXP4XX
bool "Intel IXP4xx GPIO"
depends on ARCH_IXP4XX
depends on OF
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 16-bit 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
tristate "i.MX GPIO support"
depends on ARCH_MXC || COMPILE_TEST
select GPIO_GENERIC
select GENERIC_IRQ_CHIP
config GPIO_MXS
bool "Freescale MXS GPIO support" if COMPILE_TEST
depends on ARCH_MXS || COMPILE_TEST
default y if ARCH_MXS
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 and RZ/G GPIO support"
depends on ARCH_RENESAS || COMPILE_TEST
select GPIOLIB_IRQCHIP
help
Say yes here to support GPIO on Renesas R-Car or RZ/G 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_REALTEK_OTTO
tristate "Realtek Otto GPIO support"
depends on MACH_REALTEK_RTL
default MACH_REALTEK_RTL
select GPIO_GENERIC
select GPIOLIB_IRQCHIP
help
The GPIO controller on the Otto MIPS platform supports up to two
banks of 32 GPIOs, with edge triggered interrupts. The 32 GPIOs
are grouped in four 8-bit wide ports.
When built as a module, the module will be called realtek_otto_gpio.
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_ROCKCHIP
tristate "Rockchip GPIO support"
depends on ARCH_ROCKCHIP || COMPILE_TEST
select GENERIC_IRQ_CHIP
select GPIOLIB_IRQCHIP
default ARCH_ROCKCHIP
help
Say yes here to support GPIO on Rockchip SoCs.
config GPIO_SAMA5D2_PIOBU
tristate "SAMA5D2 PIOBU GPIO support"
depends on MFD_SYSCON
depends on OF_GPIO
depends on ARCH_AT91 || COMPILE_TEST
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
select 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_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 bits. 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
tristate "NVIDIA Tegra GPIO support"
default ARCH_TEGRA
depends on ARCH_TEGRA || COMPILE_TEST
depends on OF_GPIO
select GPIOLIB_IRQCHIP
select IRQ_DOMAIN_HIERARCHY
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
select GPIOLIB_IRQCHIP
help
Say yes here to support i.MX or Vybrid vf610 GPIOs.
config GPIO_VISCONTI
tristate "Toshiba Visconti GPIO support"
depends on ARCH_VISCONTI || COMPILE_TEST
depends on OF_GPIO
select GPIOLIB_IRQCHIP
select GPIO_GENERIC
select IRQ_DOMAIN_HIERARCHY
help
Say yes here to support GPIO on Tohisba Visconti.
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
help
This driver is to support 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"
select GPIOLIB_IRQCHIP
depends on OF_GPIO
help
Say yes here to support the Xilinx FPGA GPIO device.
config GPIO_XLP
tristate "Cavium ThunderX2 GPIO support"
depends on ARCH_THUNDER2 || COMPILE_TEST
select GPIOLIB_IRQCHIP
help
This driver provides support for GPIO interface on Cavium's ThunderX2
CN99XX SoCs (Originally from Netlogic XLP).
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_ZYNQMP_MODEPIN
tristate "ZynqMP ps-mode pin GPIO configuration driver"
depends on ZYNQMP_FIRMWARE
default ZYNQMP_FIRMWARE
help
Say yes here to support the ZynqMP ps-mode pin GPIO configuration
driver.
This ps-mode pin GPIO driver is based on GPIO framework. PS_MODE
is 4-bits boot mode pins. It sets and gets the status of
the ps-mode pin. Every pin can be configured as input/output.
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 AMD's Fusion Controller Hub,
as found on G-series SOCs (e.g. GX-412TC).
Note: This driver doesn't register itself automatically, as it
needs to be provided with platform-specific configuration.
(See e.g. CONFIG_PCENGINES_APU2.)
config GPIO_MSC313
bool "MStar MSC313 GPIO support"
depends on ARCH_MSTARV7
default ARCH_MSTARV7
select GPIOLIB_IRQCHIP
select IRQ_DOMAIN_HIERARCHY
help
Say Y here to support the main GPIO block on MStar/SigmaStar
ARMv7-based SoCs.
config GPIO_IDT3243X
tristate "IDT 79RC3243X GPIO support"
depends on MIKROTIK_RB532 || COMPILE_TEST
select GPIO_GENERIC
select GPIOLIB_IRQCHIP
help
Select this option to enable GPIO driver for
IDT 79RC3243X-based devices like Mikrotik RB532.
To compile this driver as a module, choose M here: the module will
be called gpio-idt3243x.
endmenu
menu "Port-mapped I/O GPIO drivers"
depends on X86 # Unconditional I/O space access
config GPIO_I8255
tristate
select GPIO_REGMAP
help
Enables support for the i8255 interface library functions. The i8255
interface library provides functions to facilitate communication with
interfaces compatible with the venerable Intel 8255 Programmable
Peripheral Interface (PPI). The Intel 8255 PPI chip was first released
in the early 1970s but compatible interfaces are nowadays typically
found embedded in larger VLSI processing chips and FPGA components.
If built as a module its name will be gpio-i8255.
config GPIO_104_DIO_48E
tristate "ACCES 104-DIO-48E GPIO support"
depends on PC104
select ISA_BUS_API
select REGMAP_MMIO
select REGMAP_IRQ
select GPIOLIB_IRQCHIP
select GPIO_I8255
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
select GPIO_IDIO_16
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 REGMAP_MMIO
select REGMAP_IRQ
select GPIOLIB_IRQCHIP
select GPIO_REGMAP
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 "Fintek and Nuvoton Super-I/O GPIO support"
help
This option enables support for GPIOs found on Fintek Super-I/O
chips F71869, F71869A, F71882FG, F71889F and F81866.
As well as Nuvoton Super-I/O chip NCT6116D.
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
select REGMAP_MMIO
select GPIO_I8255
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) && ACPI
depends on LPC_SCH
select GPIOLIB_IRQCHIP
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