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Kconfig
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#
# 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"
select ANON_INODES
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 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 a sysfs interface for GPIOs.
This is mostly useful to work around omissions in a system's
kernel support. Those are common in custom and semicustom
hardware assembled using standard kernels with a minimum of
custom patches. In those cases, userspace code may import
a given GPIO from the kernel, if no kernel driver requested it.
Kernel drivers may also request that a particular GPIO be
exported to userspace; this can be useful when debugging.
config GPIO_GENERIC
depends on HAS_IOMEM # Only for IOMEM drivers
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_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_AXP209
tristate "X-Powers AXP209 PMIC GPIO Support"
depends on MFD_AXP20X
help
Say yes to enable GPIO support for the AXP209 PMIC
config GPIO_BCM_KONA
bool "Broadcom Kona GPIO"
depends on OF_GPIO && (ARCH_BCM_MOBILE || COMPILE_TEST)
help
Turn on GPIO support for Broadcom "Kona" chips.
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 GPIOLIB_IRQCHIP
help
Say yes here to enable GPIO support for Broadcom STB (BCM7XXX) SoCs.
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 && (ARCH_DAVINCI || ARCH_KEYSTONE)
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_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
config GPIO_ETRAXFS
bool "Axis ETRAX FS General I/O"
depends on CRIS || COMPILE_TEST
depends on OF_GPIO
select GPIO_GENERIC
select GPIOLIB_IRQCHIP
help
Say yes here to support the GPIO controller on Axis ETRAX FS SoCs.
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_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_INGENIC
tristate "Ingenic JZ47xx SoCs GPIO support"
depends on OF
depends on MACH_INGENIC || COMPILE_TEST
select GPIOLIB_IRQCHIP
help
Say yes here to support the GPIO functionality present on the
JZ4740 and JZ4780 SoCs from Ingenic.
If unsure, say N.
config GPIO_IOP
tristate "Intel IOP GPIO"
depends on ARCH_IOP32X || ARCH_IOP33X || COMPILE_TEST
select GPIO_GENERIC
help
Say yes here to support the GPIO functionality of a number of Intel
IOP32X or IOP33X.
If unsure, say N.
config GPIO_LOONGSON
bool "Loongson-2/3 GPIO support"
depends on CPU_LOONGSON2 || CPU_LOONGSON3
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)
help
Select this option to enable GPIO driver for
NXP LPC18XX/43XX devices.
config GPIO_LYNXPOINT
tristate "Intel Lynxpoint GPIO support"
depends on ACPI && X86
select GPIOLIB_IRQCHIP
help
driver for GPIO functionality on Intel Lynxpoint PCH chipset
Requires ACPI device enumeration code to set up a platform device.
config GPIO_MB86S7X
bool "GPIO support for Fujitsu MB86S7x Platforms"
depends on ARCH_MB86S7X || COMPILE_TEST
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_MOCKUP
tristate "GPIO Testing Driver"
depends on GPIOLIB && SYSFS
select GPIO_SYSFS
select GPIOLIB_IRQCHIP
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.
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_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
select GPIO_GENERIC
select GENERIC_IRQ_CHIP
config GPIO_MXS
def_bool y
depends on ARCH_MXS
select GPIO_GENERIC
select GENERIC_IRQ_CHIP
config GPIO_OCTEON
tristate "Cavium OCTEON GPIO"
depends on GPIOLIB && 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
bool "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
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_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_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_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
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 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_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 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_TZ1090
bool "Toumaz Xenif TZ1090 GPIO support"
depends on SOC_TZ1090
select GENERIC_IRQ_CHIP
default y
help
Say yes here to support Toumaz Xenif TZ1090 GPIOs.
config GPIO_TZ1090_PDC
bool "Toumaz Xenif TZ1090 PDC GPIO support"
depends on SOC_TZ1090
default y
help
Say yes here to support Toumaz Xenif TZ1090 PDC 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_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 && OF_GPIO
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"
depends on OF_GPIO
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.
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 && 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 && 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 && 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 && 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, IT8620E and IT8628E Super I/O chip 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_WS16C48
tristate "WinSystems WS16C48 GPIO support"
depends on 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
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_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"
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=y
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_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_SX150X
bool "Semtech SX150x I2C GPIO expander (deprecated)"
depends on PINCTRL && I2C=y
select PINCTRL_SX150X
default n
help
Say yes here to provide support for Semtech SX150x-series I2C
GPIO expanders. The GPIO driver was replaced by a Pinctrl version.
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_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 GPIOLIB && ARM
help
This driver supports the CPLD egpio chip present on
several HTC phones. It provides basic support for input
pins, output pins, and irqs.
config GPIO_JANZ_TTL
tristate "Janz VMOD-TTL Digital IO Module"
depends on MFD_JANZ_CMODIO
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_MAX77620
tristate "GPIO support for PMIC MAX77620 and MAX20024"
depends on MFD_MAX77620
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_MSIC
bool "Intel MSIC mixed signal gpio support"
depends on (X86 || COMPILE_TEST) && MFD_INTEL_MSIC