Linux v6.6.1 - gpio
# SPDX-License-Identifier: GPL-2.0-only
#
# GPIO infrastructure and drivers
#
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 OF_GPIO_MM_GPIOCHIP
bool
help
This adds support for the legacy 'struct of_mm_gpio_chip' interface
from PowerPC. Existing drivers using this interface need to select
this symbol, but new drivers should use the generic gpio-regmap
infrastructure instead.
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
select 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
select REGMAP_IRQ
select GPIOLIB_IRQCHIP
select GPIO_REGMAP
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
select OF_GPIO_MM_GPIOCHIP
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 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 || COMPILE_TEST
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_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_LOONGSON_64BIT
tristate "Loongson 64 bit GPIO support"
depends on LOONGARCH || COMPILE_TEST
depends on OF_GPIO
select GPIO_GENERIC
help
Say yes here to support the GPIO functionality of a number of
Loongson series of chips. The Loongson GPIO controller supports
up to 60 GPIOS in total, 4 of which are dedicated GPIO pins, and
the remaining 56 are reused with other functions, with edge or
level triggered interrupts.
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
select OF_GPIO_MM_GPIOCHIP
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
select OF_GPIO_MM_GPIOCHIP
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_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
tristate "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_TANGIER
tristate
select GPIOLIB_IRQCHIP
help
GPIO support for Intel Tangier and compatible platforms.
Currently supported:
- Elkhart Lake
- Merrifield
If built as a module its name will be gpio-tangier.
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_WCD934X
tristate "Qualcomm Technologies Inc WCD9340/WCD9341 GPIO controller driver"
depends on MFD_WCD934X && OF_GPIO
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
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 && HAS_IOPORT # I/O space access
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.
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
select I8254
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 REGMAP_MMIO
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 NCT6126D.
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 REGMAP_IRQ
select REGMAP_MMIO
select GPIOLIB_IRQCHIP
select GPIO_REGMAP
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_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_FXL6408
tristate "FXL6408 I2C GPIO expander"
select GPIO_REGMAP
select REGMAP_I2C
help
GPIO driver for Fairchild Semiconductor FXL6408 GPIO expander.
To compile this driver as a module, choose M here: the module will
be called gpio-fxl6408.
config GPIO_DS4520
tristate "DS4520 I2C GPIO expander"
select REGMAP_I2C
select GPIO_REGMAP
help
GPIO driver for ADI DS4520 I2C-based GPIO expander.
Say yes here to enable the GPIO driver for the ADI DS4520 chip.
To compile this driver as a module, choose M here: the module will
be called gpio-ds4520.
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_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.
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_BD71815
tristate "ROHM BD71815 PMIC GPIO support"
depends on MFD_ROHM_BD71828
help
Support for GPO(s) on ROHM BD71815 PMIC. There are two GPOs
available on the ROHM PMIC.
This driver can also be built as a module. If so, the module
will be called gpio-bd71815.
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 controlled 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_ELKHARTLAKE
tristate "Intel Elkhart Lake PSE GPIO support"
depends on X86 || COMPILE_TEST
select GPIO_TANGIER
help
Select this option to enable GPIO support for Intel Elkhart Lake
PSE GPIO IP.
To compile this driver as a module, choose M here: the module will
be called gpio-elkhartlake.
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_LJCA
tristate "INTEL La Jolla Cove Adapter GPIO support"
depends on MFD_LJCA
select GPIOLIB_IRQCHIP
default MFD_LJCA
help
Select this option to enable GPIO driver for the INTEL
La Jolla Cove Adapter (LJCA) board.
This driver can also be built as a module. If so, the module
will be called gpio-ljca.
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_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_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_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_SL28CPLD
tristate "Kontron sl28cpld GPIO support"
depends on MFD_SL28CPLD || COMPILE_TEST
select GPIO_REGMAP
select GPIOLIB_IRQCHIP
select REGMAP_IRQ
help
This enables support for the GPIOs found on the Kontron sl28 CPLD.
This driver can also be built as a module. If so, the module will be
called gpio-sl28cpld.
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_TN48M_CPLD
tristate "Delta Networks TN48M switch CPLD GPIO driver"
depends on MFD_TN48M_CPLD
select GPIO_REGMAP
help
This enables support for the GPIOs found on the Delta
Networks TN48M switch Lattice CPLD. It provides 12 pins in total,
they are input-only or output-only type.
This driver can also be built as a module. If so, the
module will be called gpio-tn48m.
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_TPS65219
tristate "TPS65219 GPIO"
depends on MFD_TPS65219
default MFD_TPS65219
help
Select this option to enable GPIO driver for the TPS65219 chip
family.
GPIO0 is statically configured as either input or output prior to
Linux boot. It is used for MULTI_DEVICE_ENABLE function. This setting
is statically configured by NVM. GPIO0 can't be used as a generic
GPIO. It's either a GPO when MULTI_DEVICE_EN=0 or a GPI when
MULTI_DEVICE_EN=1.
This driver can also be built as a module. If so, the module will be
called gpio_tps65219.
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
tristate "TPS68470 GPIO"
depends on INTEL_SKL_INT3472
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.
config GPIO_TQMX86
tristate "TQ-Systems QTMX86 GPIO"
depends on MFD_TQMX86 || COMPILE_TEST
depends on HAS_IOPORT_MAP
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_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 an 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
depends on HAS_IOPORT_MAP
help
The AMD 8111 southbridge 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 uncareful 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_MERRIFIELD
tristate "Intel Merrifield GPIO support"
depends on X86_INTEL_MID
select GPIO_TANGIER
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
select GPIOLIB_IRQCHIP
help
Say Y here if you want GPIO support on Mellanox BlueField 2 SoC.
config GPIO_MLXBF3
tristate "Mellanox BlueField 3 SoC GPIO"
depends on (MELLANOX_PLATFORM && ARM64) || COMPILE_TEST
select GPIO_GENERIC
select GPIOLIB_IRQCHIP
help
Say Y if you want GPIO support on Mellanox BlueField 3 SoC.
This GPIO controller supports interrupt handling and enables the
manipulation of certain GPIO pins.
This controller should be used in parallel with pinctrl-mlxbf3 to
control the desired GPIOs.
This driver can also be built as a module called mlxbf3-gpio.
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 REGMAP_MMIO
select GPIO_IDIO_16
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 REGMAP_IRQ
select REGMAP_MMIO
select GPIOLIB_IRQCHIP
select GPIO_REGMAP
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
menu "Virtual GPIO drivers"
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_LATCH
tristate "GPIO latch driver"
help
Say yes here to enable a driver for GPIO multiplexers based on latches
connected to other GPIOs.
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.
User could use it through the script in
tools/testing/selftests/gpio/gpio-mockup.sh. Reference the usage in
it.
config GPIO_VIRTIO
tristate "VirtIO GPIO support"
depends on VIRTIO
select GPIOLIB_IRQCHIP
help
Say Y here to enable guest support for virtio-based GPIO controllers.
These virtual GPIOs can be routed to real GPIOs or attached to
simulators on the host (like QEMU).
config GPIO_SIM
tristate "GPIO Simulator Module"
select IRQ_SIM
select CONFIGFS_FS
help
This enables the GPIO simulator - a configfs-based GPIO testing
driver.
endmenu
endif