| # | |
| # GPIO infrastructure and drivers | |
| # | |
| config ARCH_WANT_OPTIONAL_GPIOLIB | |
| bool | |
| help | |
| Select this config option from the architecture Kconfig, if | |
| it is possible to use gpiolib on the architecture, but let the | |
| user decide whether to actually build it or not. | |
| Select this instead of ARCH_REQUIRE_GPIOLIB, if your architecture does | |
| not depend on GPIOs being available, but rather let the user | |
| decide whether he needs it or not. | |
| config ARCH_REQUIRE_GPIOLIB | |
| bool | |
| select GPIOLIB | |
| help | |
| Platforms select gpiolib if they use this infrastructure | |
| for all their GPIOs, usually starting with ones integrated | |
| into SOC processors. | |
| Selecting this from the architecture code will cause the gpiolib | |
| code to always get built in. | |
| menuconfig GPIOLIB | |
| bool "GPIO Support" | |
| depends on ARCH_WANT_OPTIONAL_GPIOLIB || ARCH_REQUIRE_GPIOLIB | |
| select GENERIC_GPIO | |
| help | |
| This enables GPIO support through the generic GPIO library. | |
| You only need to enable this, if you also want to enable | |
| one or more of the GPIO drivers below. | |
| If unsure, say N. | |
| if GPIOLIB | |
| config DEBUG_GPIO | |
| bool "Debug GPIO calls" | |
| depends on DEBUG_KERNEL | |
| help | |
| Say Y here to add some extra checks and diagnostics to GPIO calls. | |
| These checks help ensure that GPIOs have been properly initialized | |
| before they are used, and that sleeping calls are not made from | |
| non-sleeping contexts. They can make bitbanged serial protocols | |
| slower. The diagnostics help catch the type of setup errors | |
| that are most common when setting up new platforms or boards. | |
| config GPIO_SYSFS | |
| bool "/sys/class/gpio/... (sysfs interface)" | |
| depends on SYSFS && EXPERIMENTAL | |
| help | |
| Say Y here to add a sysfs interface for GPIOs. | |
| This is mostly useful to work around omissions in a system's | |
| kernel support. Those are common in custom and semicustom | |
| hardware assembled using standard kernels with a minimum of | |
| custom patches. In those cases, userspace code may import | |
| a given GPIO from the kernel, if no kernel driver requested it. | |
| Kernel drivers may also request that a particular GPIO be | |
| exported to userspace; this can be useful when debugging. | |
| # put drivers in the right section, in alphabetical order | |
| config GPIO_MAX730X | |
| tristate | |
| comment "Memory mapped GPIO drivers:" | |
| config GPIO_BASIC_MMIO_CORE | |
| tristate | |
| help | |
| Provides core functionality for basic memory-mapped GPIO controllers. | |
| config GPIO_BASIC_MMIO | |
| tristate "Basic memory-mapped GPIO controllers support" | |
| select GPIO_BASIC_MMIO_CORE | |
| help | |
| Say yes here to support basic memory-mapped GPIO controllers. | |
| config GPIO_IT8761E | |
| tristate "IT8761E GPIO support" | |
| help | |
| Say yes here to support GPIO functionality of IT8761E super I/O chip. | |
| config GPIO_EXYNOS4 | |
| def_bool y | |
| depends on CPU_EXYNOS4210 | |
| config GPIO_PLAT_SAMSUNG | |
| def_bool y | |
| depends on SAMSUNG_GPIOLIB_4BIT | |
| config GPIO_S5PC100 | |
| def_bool y | |
| depends on CPU_S5PC100 | |
| config GPIO_S5PV210 | |
| def_bool y | |
| depends on CPU_S5PV210 | |
| config GPIO_PL061 | |
| bool "PrimeCell PL061 GPIO support" | |
| depends on ARM_AMBA | |
| help | |
| Say yes here to support the PrimeCell PL061 GPIO device | |
| config GPIO_XILINX | |
| bool "Xilinx GPIO support" | |
| depends on PPC_OF || MICROBLAZE | |
| help | |
| Say yes here to support the Xilinx FPGA GPIO device | |
| config GPIO_VR41XX | |
| tristate "NEC VR4100 series General-purpose I/O Uint support" | |
| depends on CPU_VR41XX | |
| help | |
| Say yes here to support the NEC VR4100 series General-purpose I/O Uint | |
| config GPIO_SCH | |
| tristate "Intel SCH/TunnelCreek GPIO" | |
| depends on PCI && X86 | |
| select MFD_CORE | |
| select LPC_SCH | |
| help | |
| Say yes here to support GPIO interface on Intel Poulsbo SCH | |
| or Intel Tunnel Creek processor. | |
| The Intel SCH contains a total of 14 GPIO pins. Ten GPIOs are | |
| powered by the core power rail and are turned off during sleep | |
| modes (S3 and higher). The remaining four GPIOs are powered by | |
| the Intel SCH suspend power supply. These GPIOs remain | |
| active during S3. The suspend powered GPIOs can be used to wake the | |
| system from the Suspend-to-RAM state. | |
| The Intel Tunnel Creek processor has 5 GPIOs powered by the | |
| core power rail and 9 from suspend power supply. | |
| This driver can also be built as a module. If so, the module | |
| will be called sch-gpio. | |
| config GPIO_VX855 | |
| tristate "VIA VX855/VX875 GPIO" | |
| depends on MFD_SUPPORT && PCI | |
| select MFD_CORE | |
| select MFD_VX855 | |
| help | |
| Support access to the VX855/VX875 GPIO lines through the gpio library. | |
| This driver provides common support for accessing the device, | |
| additional drivers must be enabled in order to use the | |
| functionality of the device. | |
| comment "I2C GPIO expanders:" | |
| config GPIO_MAX7300 | |
| tristate "Maxim MAX7300 GPIO expander" | |
| depends on I2C | |
| select GPIO_MAX730X | |
| help | |
| GPIO driver for Maxim MAX7301 I2C-based GPIO expander. | |
| config GPIO_MAX732X | |
| tristate "MAX7319, MAX7320-7327 I2C Port Expanders" | |
| depends on I2C | |
| help | |
| Say yes here to support the MAX7319, MAX7320-7327 series of I2C | |
| Port Expanders. Each IO port on these chips has a fixed role of | |
| Input (designated by 'I'), Push-Pull Output ('O'), or Open-Drain | |
| Input and Output (designed by 'P'). The combinations are listed | |
| below: | |
| 8 bits: max7319 (8I), max7320 (8O), max7321 (8P), | |
| max7322 (4I4O), max7323 (4P4O) | |
| 16 bits: max7324 (8I8O), max7325 (8P8O), | |
| max7326 (4I12O), max7327 (4P12O) | |
| Board setup code must specify the model to use, and the start | |
| number for these GPIOs. | |
| config GPIO_MAX732X_IRQ | |
| bool "Interrupt controller support for MAX732x" | |
| depends on GPIO_MAX732X=y && GENERIC_HARDIRQS | |
| help | |
| Say yes here to enable the max732x to be used as an interrupt | |
| controller. It requires the driver to be built in the kernel. | |
| config GPIO_PCA953X | |
| tristate "PCA953x, PCA955x, TCA64xx, and MAX7310 I/O ports" | |
| depends on I2C | |
| help | |
| Say yes here to provide access to several register-oriented | |
| SMBus I/O expanders, made mostly by NXP or TI. Compatible | |
| models include: | |
| 4 bits: pca9536, pca9537 | |
| 8 bits: max7310, pca9534, pca9538, pca9554, pca9557, | |
| tca6408 | |
| 16 bits: pca9535, pca9539, pca9555, tca6416 | |
| This driver can also be built as a module. If so, the module | |
| will be called pca953x. | |
| config GPIO_PCA953X_IRQ | |
| bool "Interrupt controller support for PCA953x" | |
| depends on GPIO_PCA953X=y | |
| help | |
| Say yes here to enable the pca953x to be used as an interrupt | |
| controller. It requires the driver to be built in the kernel. | |
| config GPIO_PCF857X | |
| tristate "PCF857x, PCA{85,96}7x, and MAX732[89] I2C GPIO expanders" | |
| depends on I2C | |
| help | |
| Say yes here to provide access to most "quasi-bidirectional" I2C | |
| GPIO expanders used for additional digital outputs or inputs. | |
| Most of these parts are from NXP, though TI is a second source for | |
| some of them. Compatible models include: | |
| 8 bits: pcf8574, pcf8574a, pca8574, pca8574a, | |
| pca9670, pca9672, pca9674, pca9674a, | |
| max7328, max7329 | |
| 16 bits: pcf8575, pcf8575c, pca8575, | |
| pca9671, pca9673, pca9675 | |
| Your board setup code will need to declare the expanders in | |
| use, and assign numbers to the GPIOs they expose. Those GPIOs | |
| can then be used from drivers and other kernel code, just like | |
| other GPIOs, but only accessible from task contexts. | |
| This driver provides an in-kernel interface to those GPIOs using | |
| platform-neutral GPIO calls. | |
| config GPIO_SX150X | |
| bool "Semtech SX150x I2C GPIO expander" | |
| depends on I2C=y | |
| default n | |
| help | |
| Say yes here to provide support for Semtech SX150-series I2C | |
| GPIO expanders. Compatible models include: | |
| 8 bits: sx1508q | |
| 16 bits: sx1509q | |
| config GPIO_STMPE | |
| bool "STMPE GPIOs" | |
| depends on MFD_STMPE | |
| help | |
| This enables support for the GPIOs found on the STMPE I/O | |
| Expanders. | |
| config GPIO_TC3589X | |
| bool "TC3589X GPIOs" | |
| depends on MFD_TC3589X | |
| help | |
| This enables support for the GPIOs found on the TC3589X | |
| I/O Expander. | |
| config GPIO_TWL4030 | |
| tristate "TWL4030, TWL5030, and TPS659x0 GPIOs" | |
| depends on TWL4030_CORE | |
| help | |
| Say yes here to access the GPIO signals of various multi-function | |
| power management chips from Texas Instruments. | |
| config GPIO_WM831X | |
| tristate "WM831x GPIOs" | |
| depends on MFD_WM831X | |
| help | |
| Say yes here to access the GPIO signals of WM831x power management | |
| chips from Wolfson Microelectronics. | |
| config GPIO_WM8350 | |
| tristate "WM8350 GPIOs" | |
| depends on MFD_WM8350 | |
| help | |
| Say yes here to access the GPIO signals of WM8350 power management | |
| chips from Wolfson Microelectronics. | |
| config GPIO_WM8994 | |
| tristate "WM8994 GPIOs" | |
| depends on MFD_WM8994 | |
| help | |
| Say yes here to access the GPIO signals of WM8994 audio hub | |
| CODECs from Wolfson Microelectronics. | |
| config GPIO_ADP5520 | |
| tristate "GPIO Support for ADP5520 PMIC" | |
| depends on PMIC_ADP5520 | |
| help | |
| This option enables support for on-chip GPIO found | |
| on Analog Devices ADP5520 PMICs. | |
| To compile this driver as a module, choose M here: the module will | |
| be called adp5520-gpio. | |
| config GPIO_ADP5588 | |
| tristate "ADP5588 I2C GPIO expander" | |
| depends on I2C | |
| help | |
| This option enables support for 18 GPIOs found | |
| on Analog Devices ADP5588 GPIO Expanders. | |
| To compile this driver as a module, choose M here: the module will be | |
| called adp5588-gpio. | |
| config GPIO_ADP5588_IRQ | |
| bool "Interrupt controller support for ADP5588" | |
| depends on GPIO_ADP5588=y | |
| help | |
| Say yes here to enable the adp5588 to be used as an interrupt | |
| controller. It requires the driver to be built in the kernel. | |
| comment "PCI GPIO expanders:" | |
| config GPIO_CS5535 | |
| tristate "AMD CS5535/CS5536 GPIO support" | |
| depends on PCI && X86 && !CS5535_GPIO && MFD_CS5535 | |
| help | |
| The AMD CS5535 and CS5536 southbridges support 28 GPIO pins that | |
| can be used for quite a number of things. The CS5535/6 is found on | |
| AMD Geode and Lemote Yeeloong devices. | |
| If unsure, say N. | |
| config GPIO_BT8XX | |
| tristate "BT8XX GPIO abuser" | |
| depends on PCI && VIDEO_BT848=n | |
| help | |
| The BT8xx frame grabber chip has 24 GPIO pins than can be abused | |
| as a cheap PCI GPIO card. | |
| This chip can be found on Miro, Hauppauge and STB TV-cards. | |
| The card needs to be physically altered for using it as a | |
| GPIO card. For more information on how to build a GPIO card | |
| from a BT8xx TV card, see the documentation file at | |
| Documentation/bt8xxgpio.txt | |
| If unsure, say N. | |
| config GPIO_LANGWELL | |
| bool "Intel Langwell/Penwell GPIO support" | |
| depends on PCI && X86 | |
| help | |
| Say Y here to support Intel Langwell/Penwell GPIO. | |
| config GPIO_PCH | |
| tristate "Intel EG20T PCH/LAPIS Semiconductor IOH(ML7223/ML7831) GPIO" | |
| depends on PCI && X86 | |
| help | |
| This driver is for PCH(Platform controller Hub) GPIO of Intel Topcliff | |
| which is an IOH(Input/Output Hub) for x86 embedded processor. | |
| This driver can access PCH GPIO device. | |
| This driver also can be used for LAPIS Semiconductor IOH(Input/ | |
| Output Hub), ML7223 and ML7831. | |
| ML7223 IOH is for MP(Media Phone) use. | |
| ML7831 IOH is for general purpose use. | |
| ML7223/ML7831 is companion chip for Intel Atom E6xx series. | |
| ML7223/ML7831 is completely compatible for Intel EG20T PCH. | |
| config GPIO_ML_IOH | |
| tristate "OKI SEMICONDUCTOR ML7213 IOH GPIO support" | |
| depends on PCI | |
| help | |
| ML7213 is companion chip for Intel Atom E6xx series. | |
| This driver can be used for OKI SEMICONDUCTOR ML7213 IOH(Input/Output | |
| Hub) which is for IVI(In-Vehicle Infotainment) use. | |
| This driver can access the IOH's GPIO device. | |
| config GPIO_TIMBERDALE | |
| bool "Support for timberdale GPIO IP" | |
| depends on MFD_TIMBERDALE && HAS_IOMEM | |
| ---help--- | |
| Add support for the GPIO IP in the timberdale FPGA. | |
| config GPIO_RDC321X | |
| tristate "RDC R-321x GPIO support" | |
| depends on PCI | |
| select MFD_SUPPORT | |
| select MFD_CORE | |
| select MFD_RDC321X | |
| help | |
| Support for the RDC R321x SoC GPIOs over southbridge | |
| PCI configuration space. | |
| comment "SPI GPIO expanders:" | |
| config GPIO_MAX7301 | |
| tristate "Maxim MAX7301 GPIO expander" | |
| depends on SPI_MASTER | |
| select GPIO_MAX730X | |
| help | |
| GPIO driver for Maxim MAX7301 SPI-based GPIO expander. | |
| config GPIO_MCP23S08 | |
| tristate "Microchip MCP23Sxx I/O expander" | |
| depends on SPI_MASTER | |
| help | |
| SPI driver for Microchip MCP23S08/MPC23S17 I/O expanders. | |
| This provides a GPIO interface supporting inputs and outputs. | |
| config GPIO_MC33880 | |
| tristate "Freescale MC33880 high-side/low-side switch" | |
| depends on SPI_MASTER | |
| help | |
| SPI driver for Freescale MC33880 high-side/low-side switch. | |
| This provides GPIO interface supporting inputs and outputs. | |
| config GPIO_74X164 | |
| tristate "74x164 serial-in/parallel-out 8-bits shift register" | |
| depends on SPI_MASTER | |
| help | |
| Platform driver for 74x164 compatible serial-in/parallel-out | |
| 8-outputs shift registers. This driver can be used to provide access | |
| to more gpio outputs. | |
| comment "AC97 GPIO expanders:" | |
| config GPIO_UCB1400 | |
| bool "Philips UCB1400 GPIO" | |
| depends on UCB1400_CORE | |
| help | |
| This enables support for the Philips UCB1400 GPIO pins. | |
| The UCB1400 is an AC97 audio codec. | |
| To compile this driver as a module, choose M here: the | |
| module will be called ucb1400_gpio. | |
| comment "MODULbus GPIO expanders:" | |
| config GPIO_JANZ_TTL | |
| tristate "Janz VMOD-TTL Digital IO Module" | |
| depends on MFD_JANZ_CMODIO | |
| help | |
| This enables support for the Janz VMOD-TTL Digital IO module. | |
| This driver provides support for driving the pins in output | |
| mode only. Input mode is not supported. | |
| config AB8500_GPIO | |
| bool "ST-Ericsson AB8500 Mixed Signal Circuit gpio functions" | |
| depends on AB8500_CORE && BROKEN | |
| help | |
| Select this to enable the AB8500 IC GPIO driver | |
| config GPIO_TPS65910 | |
| bool "TPS65910 GPIO" | |
| depends on MFD_TPS65910 | |
| help | |
| Select this option to enable GPIO driver for the TPS65910 | |
| chip family. | |
| endif |