1a9c5fff5SDavid Brownell# 2e849dc04SLinus Walleij# GPIO infrastructure and drivers 3a9c5fff5SDavid Brownell# 4a9c5fff5SDavid Brownell 57563bbf8SMark Brownconfig ARCH_HAVE_CUSTOM_GPIO_H 67563bbf8SMark Brown bool 77563bbf8SMark Brown help 87563bbf8SMark Brown Selecting this config option from the architecture Kconfig allows 97563bbf8SMark Brown the architecture to provide a custom asm/gpio.h implementation 107563bbf8SMark Brown overriding the default implementations. New uses of this are 117563bbf8SMark Brown strongly discouraged. 127563bbf8SMark Brown 137444a72eSMichael Bueschconfig ARCH_WANT_OPTIONAL_GPIOLIB 14a9c5fff5SDavid Brownell bool 15a9c5fff5SDavid Brownell help 167444a72eSMichael Buesch Select this config option from the architecture Kconfig, if 177444a72eSMichael Buesch it is possible to use gpiolib on the architecture, but let the 187444a72eSMichael Buesch user decide whether to actually build it or not. 197444a72eSMichael Buesch Select this instead of ARCH_REQUIRE_GPIOLIB, if your architecture does 207444a72eSMichael Buesch not depend on GPIOs being available, but rather let the user 217444a72eSMichael Buesch decide whether he needs it or not. 227444a72eSMichael Buesch 237444a72eSMichael Bueschconfig ARCH_REQUIRE_GPIOLIB 247444a72eSMichael Buesch bool 257444a72eSMichael Buesch select GPIOLIB 267444a72eSMichael Buesch help 27a9c5fff5SDavid Brownell Platforms select gpiolib if they use this infrastructure 28a9c5fff5SDavid Brownell for all their GPIOs, usually starting with ones integrated 29a9c5fff5SDavid Brownell into SOC processors. 307444a72eSMichael Buesch Selecting this from the architecture code will cause the gpiolib 317444a72eSMichael Buesch code to always get built in. 32a9c5fff5SDavid Brownell 337444a72eSMichael Buesch 347444a72eSMichael Buesch 357444a72eSMichael Bueschmenuconfig GPIOLIB 367444a72eSMichael Buesch bool "GPIO Support" 377444a72eSMichael Buesch depends on ARCH_WANT_OPTIONAL_GPIOLIB || ARCH_REQUIRE_GPIOLIB 387444a72eSMichael Buesch select GENERIC_GPIO 397444a72eSMichael Buesch help 407444a72eSMichael Buesch This enables GPIO support through the generic GPIO library. 417444a72eSMichael Buesch You only need to enable this, if you also want to enable 42e849dc04SLinus Walleij one or more of the GPIO drivers below. 437444a72eSMichael Buesch 447444a72eSMichael Buesch If unsure, say N. 457444a72eSMichael Buesch 467444a72eSMichael Bueschif GPIOLIB 47a9c5fff5SDavid Brownell 48f141ed65SGrant Likelyconfig OF_GPIO 49f141ed65SGrant Likely def_bool y 50afe760e4SDavid S. Miller depends on OF 51f141ed65SGrant Likely 52e29482e8SMathias Nymanconfig GPIO_ACPI 53e29482e8SMathias Nyman def_bool y 54e29482e8SMathias Nyman depends on ACPI 55e29482e8SMathias Nyman 56a9c5fff5SDavid Brownellconfig DEBUG_GPIO 57a9c5fff5SDavid Brownell bool "Debug GPIO calls" 58a9c5fff5SDavid Brownell depends on DEBUG_KERNEL 59a9c5fff5SDavid Brownell help 60a9c5fff5SDavid Brownell Say Y here to add some extra checks and diagnostics to GPIO calls. 61692105b8SMatt LaPlante These checks help ensure that GPIOs have been properly initialized 62692105b8SMatt LaPlante before they are used, and that sleeping calls are not made from 63692105b8SMatt LaPlante non-sleeping contexts. They can make bitbanged serial protocols 64a9c5fff5SDavid Brownell slower. The diagnostics help catch the type of setup errors 65a9c5fff5SDavid Brownell that are most common when setting up new platforms or boards. 66a9c5fff5SDavid Brownell 67d8f388d8SDavid Brownellconfig GPIO_SYSFS 68d8f388d8SDavid Brownell bool "/sys/class/gpio/... (sysfs interface)" 69d8f388d8SDavid Brownell depends on SYSFS && EXPERIMENTAL 70d8f388d8SDavid Brownell help 71d8f388d8SDavid Brownell Say Y here to add a sysfs interface for GPIOs. 72d8f388d8SDavid Brownell 73d8f388d8SDavid Brownell This is mostly useful to work around omissions in a system's 74d8f388d8SDavid Brownell kernel support. Those are common in custom and semicustom 75d8f388d8SDavid Brownell hardware assembled using standard kernels with a minimum of 76d8f388d8SDavid Brownell custom patches. In those cases, userspace code may import 77d8f388d8SDavid Brownell a given GPIO from the kernel, if no kernel driver requested it. 78d8f388d8SDavid Brownell 79d8f388d8SDavid Brownell Kernel drivers may also request that a particular GPIO be 80d8f388d8SDavid Brownell exported to userspace; this can be useful when debugging. 81d8f388d8SDavid Brownell 82c103de24SGrant Likelyconfig GPIO_GENERIC 83c103de24SGrant Likely tristate 84c103de24SGrant Likely 85e849dc04SLinus Walleij# put drivers in the right section, in alphabetical order 86a9c5fff5SDavid Brownell 8707bfc915Sashishj3config GPIO_DA9052 8807bfc915Sashishj3 tristate "Dialog DA9052 GPIO" 891c4fe3aaSAxel Lin depends on PMIC_DA9052 9007bfc915Sashishj3 help 9107bfc915Sashishj3 Say yes here to enable the GPIO driver for the DA9052 chip. 9207bfc915Sashishj3 9304ed4279SAshish Jangamconfig GPIO_DA9055 9404ed4279SAshish Jangam tristate "Dialog Semiconductor DA9055 GPIO" 9504ed4279SAshish Jangam depends on MFD_DA9055 9604ed4279SAshish Jangam help 9704ed4279SAshish Jangam Say yes here to enable the GPIO driver for the DA9055 chip. 9804ed4279SAshish Jangam 9904ed4279SAshish Jangam The Dialog DA9055 PMIC chip has 3 GPIO pins that can be 10004ed4279SAshish Jangam be controller by this driver. 10104ed4279SAshish Jangam 10204ed4279SAshish Jangam If driver is built as a module it will be called gpio-da9055. 10304ed4279SAshish Jangam 104e952805dSWolfram Sangconfig GPIO_MAX730X 105e952805dSWolfram Sang tristate 106e952805dSWolfram Sang 107e849dc04SLinus Walleijcomment "Memory mapped GPIO drivers:" 1080bcb6069SJohn Linn 109a3b8d4a5SAlexander Shiyanconfig GPIO_CLPS711X 110a3b8d4a5SAlexander Shiyan def_bool y 111a3b8d4a5SAlexander Shiyan depends on ARCH_CLPS711X 112a3b8d4a5SAlexander Shiyan 113c103de24SGrant Likelyconfig GPIO_GENERIC_PLATFORM 114c103de24SGrant Likely tristate "Generic memory-mapped GPIO controller support (MMIO platform device)" 115c103de24SGrant Likely select GPIO_GENERIC 116280df6b3SJamie Iles help 117c103de24SGrant Likely Say yes here to support basic platform_device memory-mapped GPIO controllers. 118aeec56e3SAnton Vorontsov 1199cc0cb3cSDenis Turischevconfig GPIO_IT8761E 1209cc0cb3cSDenis Turischev tristate "IT8761E GPIO support" 121265fe02bSGrant Likely depends on X86 # unconditional access to IO space. 1229cc0cb3cSDenis Turischev help 1239cc0cb3cSDenis Turischev Say yes here to support GPIO functionality of IT8761E super I/O chip. 1249cc0cb3cSDenis Turischev 125a07e103eSMagnus Dammconfig GPIO_EM 126a07e103eSMagnus Damm tristate "Emma Mobile GPIO" 127a07e103eSMagnus Damm depends on ARM 128a07e103eSMagnus Damm help 129a07e103eSMagnus Damm Say yes here to support GPIO on Renesas Emma Mobile SoCs. 130a07e103eSMagnus Damm 131c6b52c13SH Hartley Sweetenconfig GPIO_EP93XX 132c6b52c13SH Hartley Sweeten def_bool y 133c6b52c13SH Hartley Sweeten depends on ARCH_EP93XX 1341e4c8842SH Hartley Sweeten select GPIO_GENERIC 135c6b52c13SH Hartley Sweeten 1365238f7bcSJohn Crispinconfig GPIO_MM_LANTIQ 1375238f7bcSJohn Crispin bool "Lantiq Memory mapped GPIOs" 1385238f7bcSJohn Crispin depends on LANTIQ && SOC_XWAY 1395238f7bcSJohn Crispin help 1405238f7bcSJohn Crispin This enables support for memory mapped GPIOs on the External Bus Unit 1415238f7bcSJohn Crispin (EBU) found on Lantiq SoCs. The gpios are output only as they are 1425238f7bcSJohn Crispin created by attaching a 16bit latch to the bus. 1435238f7bcSJohn Crispin 1446eae1aceSGrant Likelyconfig GPIO_MPC5200 1456eae1aceSGrant Likely def_bool y 1466eae1aceSGrant Likely depends on PPC_MPC52xx 1476eae1aceSGrant Likely 148c68308ddSWolfram Sangconfig GPIO_MPC8XXX 149c68308ddSWolfram Sang bool "MPC512x/MPC8xxx GPIO support" 150c68308ddSWolfram Sang depends on PPC_MPC512x || PPC_MPC831x || PPC_MPC834x || PPC_MPC837x || \ 151c68308ddSWolfram Sang FSL_SOC_BOOKE || PPC_86xx 152c68308ddSWolfram Sang help 153c68308ddSWolfram Sang Say Y here if you're going to use hardware that connects to the 154c68308ddSWolfram Sang MPC512x/831x/834x/837x/8572/8610 GPIOs. 155c68308ddSWolfram Sang 15674d10d74SDavid Brownconfig GPIO_MSM_V1 15774d10d74SDavid Brown tristate "Qualcomm MSM GPIO v1" 158afcc0f8cSChristian Dietrich depends on GPIOLIB && ARCH_MSM && (ARCH_MSM7X00A || ARCH_MSM7X30 || ARCH_QSD8X50) 15974d10d74SDavid Brown help 16074d10d74SDavid Brown Say yes here to support the GPIO interface on ARM v6 based 16174d10d74SDavid Brown Qualcomm MSM chips. Most of the pins on the MSM can be 16274d10d74SDavid Brown selected for GPIO, and are controlled by this driver. 16374d10d74SDavid Brown 1641a5ab4b3SDavid Brownconfig GPIO_MSM_V2 1651a5ab4b3SDavid Brown tristate "Qualcomm MSM GPIO v2" 1661a5ab4b3SDavid Brown depends on GPIOLIB && ARCH_MSM 1671a5ab4b3SDavid Brown help 1681a5ab4b3SDavid Brown Say yes here to support the GPIO interface on ARM v7 based 1691a5ab4b3SDavid Brown Qualcomm MSM chips. Most of the pins on the MSM can be 1701a5ab4b3SDavid Brown selected for GPIO, and are controlled by this driver. 1711a5ab4b3SDavid Brown 172fefe7b09SThomas Petazzoniconfig GPIO_MVEBU 173fefe7b09SThomas Petazzoni def_bool y 17449e928d6SAndrew Lunn depends on PLAT_ORION 175bc1008cfSGregory CLEMENT depends on OF 176fefe7b09SThomas Petazzoni select GPIO_GENERIC 177fefe7b09SThomas Petazzoni select GENERIC_IRQ_CHIP 178fefe7b09SThomas Petazzoni 179d37a65bbSShawn Guoconfig GPIO_MXC 180d37a65bbSShawn Guo def_bool y 181d37a65bbSShawn Guo depends on ARCH_MXC 182c103de24SGrant Likely select GPIO_GENERIC 183e4ea9333SShawn Guo select GENERIC_IRQ_CHIP 184c103de24SGrant Likely 185c103de24SGrant Likelyconfig GPIO_MXS 186c103de24SGrant Likely def_bool y 187c103de24SGrant Likely depends on ARCH_MXS 18806f88a8aSShawn Guo select GPIO_GENERIC 189498c17cfSShawn Guo select GENERIC_IRQ_CHIP 190d37a65bbSShawn Guo 1911e9c2859SBaruch Siachconfig GPIO_PL061 1921e9c2859SBaruch Siach bool "PrimeCell PL061 GPIO support" 1938618b3b4SAlessandro Rubini depends on ARM && ARM_AMBA 1943ab52475SRob Herring select GENERIC_IRQ_CHIP 1951e9c2859SBaruch Siach help 1961e9c2859SBaruch Siach Say yes here to support the PrimeCell PL061 GPIO device 1971e9c2859SBaruch Siach 198157d2644SHaojian Zhuangconfig GPIO_PXA 199157d2644SHaojian Zhuang bool "PXA GPIO support" 200157d2644SHaojian Zhuang depends on ARCH_PXA || ARCH_MMP 201157d2644SHaojian Zhuang help 202157d2644SHaojian Zhuang Say yes here to support the PXA GPIO device 203157d2644SHaojian Zhuang 204b53bc281SShiraz Hashimconfig GPIO_SPEAR_SPICS 205b53bc281SShiraz Hashim bool "ST SPEAr13xx SPI Chip Select as GPIO support" 206b53bc281SShiraz Hashim depends on PLAT_SPEAR 207b53bc281SShiraz Hashim select GENERIC_IRQ_CHIP 208b53bc281SShiraz Hashim help 209b53bc281SShiraz Hashim Say yes here to support ST SPEAr SPI Chip Select as GPIO device 210b53bc281SShiraz Hashim 2117b0d44f3SAlessandro Rubiniconfig GPIO_STA2X11 2127b0d44f3SAlessandro Rubini bool "STA2x11/ConneXt GPIO support" 2137b0d44f3SAlessandro Rubini depends on MFD_STA2X11 2147b0d44f3SAlessandro Rubini select GENERIC_IRQ_CHIP 2157b0d44f3SAlessandro Rubini help 2167b0d44f3SAlessandro Rubini Say yes here to support the STA2x11/ConneXt GPIO device. 2177b0d44f3SAlessandro Rubini The GPIO module has 128 GPIO pins with alternate functions. 2187b0d44f3SAlessandro Rubini 219759f5f37SVivien Didelotconfig GPIO_TS5500 220759f5f37SVivien Didelot tristate "TS-5500 DIO blocks and compatibles" 221759f5f37SVivien Didelot help 222759f5f37SVivien Didelot This driver supports Digital I/O exposed by pin blocks found on some 223759f5f37SVivien Didelot Technologic Systems platforms. It includes, but is not limited to, 3 224759f5f37SVivien Didelot blocks of the TS-5500: DIO1, DIO2 and the LCD port, and the TS-5600 225759f5f37SVivien Didelot LCD port. 226759f5f37SVivien Didelot 2274e48b1c5STony Priskconfig GPIO_VT8500 2284e48b1c5STony Prisk bool "VIA/Wondermedia SoC GPIO Support" 2294e48b1c5STony Prisk depends on ARCH_VT8500 2304e48b1c5STony Prisk help 2314e48b1c5STony Prisk Say yes here to support the VT8500/WM8505/WM8650 GPIO controller. 2324e48b1c5STony Prisk 2330bcb6069SJohn Linnconfig GPIO_XILINX 2340bcb6069SJohn Linn bool "Xilinx GPIO support" 2356fa612b5SMichal Simek depends on PPC_OF || MICROBLAZE 2360bcb6069SJohn Linn help 2370bcb6069SJohn Linn Say yes here to support the Xilinx FPGA GPIO device 2380bcb6069SJohn Linn 23927fdd325SYoichi Yuasaconfig GPIO_VR41XX 24027fdd325SYoichi Yuasa tristate "NEC VR4100 series General-purpose I/O Uint support" 24127fdd325SYoichi Yuasa depends on CPU_VR41XX 24227fdd325SYoichi Yuasa help 24327fdd325SYoichi Yuasa Say yes here to support the NEC VR4100 series General-purpose I/O Uint 24427fdd325SYoichi Yuasa 245be9b06b2SDenis Turischevconfig GPIO_SCH 24677820ffaSSeth Heasley tristate "Intel SCH/TunnelCreek/Centerton GPIO" 2476cff9e2bSH Hartley Sweeten depends on PCI && X86 248860fb8c1SRandy Dunlap select MFD_CORE 249be9b06b2SDenis Turischev select LPC_SCH 250be9b06b2SDenis Turischev help 25177820ffaSSeth Heasley Say yes here to support GPIO interface on Intel Poulsbo SCH, 25277820ffaSSeth Heasley Intel Tunnel Creek processor or Intel Centerton processor. 253be9b06b2SDenis Turischev The Intel SCH contains a total of 14 GPIO pins. Ten GPIOs are 254be9b06b2SDenis Turischev powered by the core power rail and are turned off during sleep 255be9b06b2SDenis Turischev modes (S3 and higher). The remaining four GPIOs are powered by 256be9b06b2SDenis Turischev the Intel SCH suspend power supply. These GPIOs remain 257be9b06b2SDenis Turischev active during S3. The suspend powered GPIOs can be used to wake the 258be9b06b2SDenis Turischev system from the Suspend-to-RAM state. 259f04ddfcdSDenis Turischev The Intel Tunnel Creek processor has 5 GPIOs powered by the 260f04ddfcdSDenis Turischev core power rail and 9 from suspend power supply. 26177820ffaSSeth Heasley The Intel Centerton processor has a total of 30 GPIO pins. 26277820ffaSSeth Heasley Twenty-one are powered by the core power rail and 9 from the 26377820ffaSSeth Heasley suspend power supply. 264be9b06b2SDenis Turischev 2656ed9f9c4SPeter Tyserconfig GPIO_ICH 2666ed9f9c4SPeter Tyser tristate "Intel ICH GPIO" 2676ed9f9c4SPeter Tyser depends on PCI && X86 2686ed9f9c4SPeter Tyser select MFD_CORE 2696ed9f9c4SPeter Tyser select LPC_ICH 2706ed9f9c4SPeter Tyser help 2716ed9f9c4SPeter Tyser Say yes here to support the GPIO functionality of a number of Intel 2726ed9f9c4SPeter Tyser ICH-based chipsets. Currently supported devices: ICH6, ICH7, ICH8 2736ed9f9c4SPeter Tyser ICH9, ICH10, Series 5/3400 (eg Ibex Peak), Series 6/C200 (eg 2746ed9f9c4SPeter Tyser Cougar Point), NM10 (Tiger Point), and 3100 (Whitmore Lake). 2756ed9f9c4SPeter Tyser 2766ed9f9c4SPeter Tyser If unsure, say N. 277be9b06b2SDenis Turischev 27899ea2626SDaniel Drakeconfig GPIO_VX855 27999ea2626SDaniel Drake tristate "VIA VX855/VX875 GPIO" 2808a0a8e8eSArnd Bergmann depends on PCI 28199ea2626SDaniel Drake select MFD_CORE 28299ea2626SDaniel Drake select MFD_VX855 28399ea2626SDaniel Drake help 28499ea2626SDaniel Drake Support access to the VX855/VX875 GPIO lines through the gpio library. 28599ea2626SDaniel Drake 28699ea2626SDaniel Drake This driver provides common support for accessing the device, 28799ea2626SDaniel Drake additional drivers must be enabled in order to use the 28899ea2626SDaniel Drake functionality of the device. 28999ea2626SDaniel Drake 2906518bb69SMartyn Welchconfig GPIO_GE_FPGA 2916518bb69SMartyn Welch bool "GE FPGA based GPIO" 2926518bb69SMartyn Welch depends on GE_FPGA 2936518bb69SMartyn Welch help 2946518bb69SMartyn Welch Support for common GPIO functionality provided on some GE Single Board 2956518bb69SMartyn Welch Computers. 2966518bb69SMartyn Welch 2976518bb69SMartyn Welch This driver provides basic support (configure as input or output, read 2986518bb69SMartyn Welch and write pin state) for GPIO implemented in a number of GE single 2996518bb69SMartyn Welch board computers. 3006518bb69SMartyn Welch 301*1d09aaa6SMathias Nymanconfig GPIO_LYNXPOINT 302*1d09aaa6SMathias Nyman bool "Intel Lynxpoint GPIO support" 303*1d09aaa6SMathias Nyman depends on ACPI 304*1d09aaa6SMathias Nyman select IRQ_DOMAIN 305*1d09aaa6SMathias Nyman help 306*1d09aaa6SMathias Nyman driver for GPIO functionality on Intel Lynxpoint PCH chipset 307*1d09aaa6SMathias Nyman Requires ACPI device enumeration code to set up a platform device. 308*1d09aaa6SMathias Nyman 309a9c5fff5SDavid Brownellcomment "I2C GPIO expanders:" 310a9c5fff5SDavid Brownell 31131ba56f2SMark Brownconfig GPIO_ARIZONA 31231ba56f2SMark Brown tristate "Wolfson Microelectronics Arizona class devices" 31331ba56f2SMark Brown depends on MFD_ARIZONA 31431ba56f2SMark Brown help 31531ba56f2SMark Brown Support for GPIOs on Wolfson Arizona class devices. 31631ba56f2SMark Brown 317e952805dSWolfram Sangconfig GPIO_MAX7300 318e952805dSWolfram Sang tristate "Maxim MAX7300 GPIO expander" 319e952805dSWolfram Sang depends on I2C 320e952805dSWolfram Sang select GPIO_MAX730X 321e952805dSWolfram Sang help 322e952805dSWolfram Sang GPIO driver for Maxim MAX7301 I2C-based GPIO expander. 323e952805dSWolfram Sang 324bbcd6d54SEric Miaoconfig GPIO_MAX732X 325bbcd6d54SEric Miao tristate "MAX7319, MAX7320-7327 I2C Port Expanders" 326bbcd6d54SEric Miao depends on I2C 327bbcd6d54SEric Miao help 328bbcd6d54SEric Miao Say yes here to support the MAX7319, MAX7320-7327 series of I2C 329bbcd6d54SEric Miao Port Expanders. Each IO port on these chips has a fixed role of 330bbcd6d54SEric Miao Input (designated by 'I'), Push-Pull Output ('O'), or Open-Drain 331bbcd6d54SEric Miao Input and Output (designed by 'P'). The combinations are listed 332bbcd6d54SEric Miao below: 333bbcd6d54SEric Miao 334bbcd6d54SEric Miao 8 bits: max7319 (8I), max7320 (8O), max7321 (8P), 335bbcd6d54SEric Miao max7322 (4I4O), max7323 (4P4O) 336bbcd6d54SEric Miao 337bbcd6d54SEric Miao 16 bits: max7324 (8I8O), max7325 (8P8O), 338bbcd6d54SEric Miao max7326 (4I12O), max7327 (4P12O) 339bbcd6d54SEric Miao 340bbcd6d54SEric Miao Board setup code must specify the model to use, and the start 341bbcd6d54SEric Miao number for these GPIOs. 342bbcd6d54SEric Miao 343a80a0bbeSMarc Zyngierconfig GPIO_MAX732X_IRQ 344a80a0bbeSMarc Zyngier bool "Interrupt controller support for MAX732x" 345a80a0bbeSMarc Zyngier depends on GPIO_MAX732X=y && GENERIC_HARDIRQS 346a80a0bbeSMarc Zyngier help 347a80a0bbeSMarc Zyngier Say yes here to enable the max732x to be used as an interrupt 348a80a0bbeSMarc Zyngier controller. It requires the driver to be built in the kernel. 349a80a0bbeSMarc Zyngier 350608589b1Swu guoxingconfig GPIO_MC9S08DZ60 351608589b1Swu guoxing bool "MX35 3DS BOARD MC9S08DZ60 GPIO functions" 3524c30aa33SAxel Lin depends on I2C=y && MACH_MX35_3DS 353608589b1Swu guoxing help 354608589b1Swu guoxing Select this to enable the MC9S08DZ60 GPIO driver 355608589b1Swu guoxing 356f3dc3630SGuennadi Liakhovetskiconfig GPIO_PCA953X 357c29985ddSAxel Lin tristate "PCA953x, PCA955x, PCA957x, TCA64xx, and MAX7310 I/O ports" 3589e60fdcfSeric miao depends on I2C 3599e60fdcfSeric miao help 3607059d4b0SDavid Brownell Say yes here to provide access to several register-oriented 3617059d4b0SDavid Brownell SMBus I/O expanders, made mostly by NXP or TI. Compatible 3627059d4b0SDavid Brownell models include: 3637059d4b0SDavid Brownell 3647059d4b0SDavid Brownell 4 bits: pca9536, pca9537 3657059d4b0SDavid Brownell 366c29985ddSAxel Lin 8 bits: max7310, max7315, pca6107, pca9534, pca9538, pca9554, 367c29985ddSAxel Lin pca9556, pca9557, pca9574, tca6408 3687059d4b0SDavid Brownell 369c29985ddSAxel Lin 16 bits: max7312, max7313, pca9535, pca9539, pca9555, pca9575, 370c29985ddSAxel Lin tca6416 3719e60fdcfSeric miao 37289ea8bbeSMarc Zyngierconfig GPIO_PCA953X_IRQ 37389ea8bbeSMarc Zyngier bool "Interrupt controller support for PCA953x" 37489ea8bbeSMarc Zyngier depends on GPIO_PCA953X=y 37589ea8bbeSMarc Zyngier help 37689ea8bbeSMarc Zyngier Say yes here to enable the pca953x to be used as an interrupt 37789ea8bbeSMarc Zyngier controller. It requires the driver to be built in the kernel. 37889ea8bbeSMarc Zyngier 37915fae37dSDavid Brownellconfig GPIO_PCF857X 3801673ad52SDavid Brownell tristate "PCF857x, PCA{85,96}7x, and MAX732[89] I2C GPIO expanders" 38115fae37dSDavid Brownell depends on I2C 382901acf5bSArnd Bergmann select IRQ_DOMAIN 38315fae37dSDavid Brownell help 38415fae37dSDavid Brownell Say yes here to provide access to most "quasi-bidirectional" I2C 38515fae37dSDavid Brownell GPIO expanders used for additional digital outputs or inputs. 38615fae37dSDavid Brownell Most of these parts are from NXP, though TI is a second source for 38715fae37dSDavid Brownell some of them. Compatible models include: 38815fae37dSDavid Brownell 38915fae37dSDavid Brownell 8 bits: pcf8574, pcf8574a, pca8574, pca8574a, 3901673ad52SDavid Brownell pca9670, pca9672, pca9674, pca9674a, 3911673ad52SDavid Brownell max7328, max7329 39215fae37dSDavid Brownell 39315fae37dSDavid Brownell 16 bits: pcf8575, pcf8575c, pca8575, 39415fae37dSDavid Brownell pca9671, pca9673, pca9675 39515fae37dSDavid Brownell 39615fae37dSDavid Brownell Your board setup code will need to declare the expanders in 39715fae37dSDavid Brownell use, and assign numbers to the GPIOs they expose. Those GPIOs 39815fae37dSDavid Brownell can then be used from drivers and other kernel code, just like 39915fae37dSDavid Brownell other GPIOs, but only accessible from task contexts. 40015fae37dSDavid Brownell 40115fae37dSDavid Brownell This driver provides an in-kernel interface to those GPIOs using 40215fae37dSDavid Brownell platform-neutral GPIO calls. 40315fae37dSDavid Brownell 404e9fe32bcSLaxman Dewanganconfig GPIO_RC5T583 405e9fe32bcSLaxman Dewangan bool "RICOH RC5T583 GPIO" 406e9fe32bcSLaxman Dewangan depends on MFD_RC5T583 407e9fe32bcSLaxman Dewangan help 408e9fe32bcSLaxman Dewangan Select this option to enable GPIO driver for the Ricoh RC5T583 409e9fe32bcSLaxman Dewangan chip family. 410e9fe32bcSLaxman Dewangan This driver provides the support for driving/reading the gpio pins 411e9fe32bcSLaxman Dewangan of RC5T583 device through standard gpio library. 412e9fe32bcSLaxman Dewangan 413c34f16b7SGregory Beanconfig GPIO_SX150X 414c34f16b7SGregory Bean bool "Semtech SX150x I2C GPIO expander" 415c34f16b7SGregory Bean depends on I2C=y 416c34f16b7SGregory Bean default n 417c34f16b7SGregory Bean help 418c34f16b7SGregory Bean Say yes here to provide support for Semtech SX150-series I2C 419c34f16b7SGregory Bean GPIO expanders. Compatible models include: 420c34f16b7SGregory Bean 421c34f16b7SGregory Bean 8 bits: sx1508q 422c34f16b7SGregory Bean 16 bits: sx1509q 423c34f16b7SGregory Bean 42403f822f5SRabin Vincentconfig GPIO_STMPE 42503f822f5SRabin Vincent bool "STMPE GPIOs" 42603f822f5SRabin Vincent depends on MFD_STMPE 42703f822f5SRabin Vincent help 42803f822f5SRabin Vincent This enables support for the GPIOs found on the STMPE I/O 42903f822f5SRabin Vincent Expanders. 43003f822f5SRabin Vincent 4315238f7bcSJohn Crispinconfig GPIO_STP_XWAY 4325238f7bcSJohn Crispin bool "XWAY STP GPIOs" 4335238f7bcSJohn Crispin depends on SOC_XWAY 4345238f7bcSJohn Crispin help 4355238f7bcSJohn Crispin This enables support for the Serial To Parallel (STP) unit found on 4365238f7bcSJohn Crispin XWAY SoC. The STP allows the SoC to drive a shift registers cascade, 4375238f7bcSJohn Crispin that can be up to 24 bit. This peripheral is aimed at driving leds. 4385238f7bcSJohn Crispin Some of the gpios/leds can be auto updated by the soc with dsl and 4395238f7bcSJohn Crispin phy status. 4405238f7bcSJohn Crispin 441f4e8afdcSSundar Iyerconfig GPIO_TC3589X 442f4e8afdcSSundar Iyer bool "TC3589X GPIOs" 443f4e8afdcSSundar Iyer depends on MFD_TC3589X 444d88b25beSRabin Vincent help 445f4e8afdcSSundar Iyer This enables support for the GPIOs found on the TC3589X 446d88b25beSRabin Vincent I/O Expander. 447d88b25beSRabin Vincent 448668a6cc7SMargarita Olayaconfig GPIO_TPS65912 449668a6cc7SMargarita Olaya tristate "TI TPS65912 GPIO" 450668a6cc7SMargarita Olaya depends on (MFD_TPS65912_I2C || MFD_TPS65912_SPI) 451668a6cc7SMargarita Olaya help 452668a6cc7SMargarita Olaya This driver supports TPS65912 gpio chip 453668a6cc7SMargarita Olaya 454e9d35947SDavid Brownellconfig GPIO_TWL4030 455e9d35947SDavid Brownell tristate "TWL4030, TWL5030, and TPS659x0 GPIOs" 456e9d35947SDavid Brownell depends on TWL4030_CORE 457e9d35947SDavid Brownell help 458e9d35947SDavid Brownell Say yes here to access the GPIO signals of various multi-function 459e9d35947SDavid Brownell power management chips from Texas Instruments. 460e9d35947SDavid Brownell 46170ffd691SPeter Ujfalusiconfig GPIO_TWL6040 46270ffd691SPeter Ujfalusi tristate "TWL6040 GPO" 46370ffd691SPeter Ujfalusi depends on TWL6040_CORE 46470ffd691SPeter Ujfalusi help 46570ffd691SPeter Ujfalusi Say yes here to access the GPO signals of twl6040 46670ffd691SPeter Ujfalusi audio chip from Texas Instruments. 46770ffd691SPeter Ujfalusi 468e4b736f1SMark Brownconfig GPIO_WM831X 469e4b736f1SMark Brown tristate "WM831x GPIOs" 470e4b736f1SMark Brown depends on MFD_WM831X 471e4b736f1SMark Brown help 472e4b736f1SMark Brown Say yes here to access the GPIO signals of WM831x power management 473e4b736f1SMark Brown chips from Wolfson Microelectronics. 474e4b736f1SMark Brown 47538f6ce45SMark Brownconfig GPIO_WM8350 47638f6ce45SMark Brown tristate "WM8350 GPIOs" 47738f6ce45SMark Brown depends on MFD_WM8350 47838f6ce45SMark Brown help 47938f6ce45SMark Brown Say yes here to access the GPIO signals of WM8350 power management 48038f6ce45SMark Brown chips from Wolfson Microelectronics. 48138f6ce45SMark Brown 4822955c309SMark Brownconfig GPIO_WM8994 4832955c309SMark Brown tristate "WM8994 GPIOs" 4842955c309SMark Brown depends on MFD_WM8994 4852955c309SMark Brown help 4862955c309SMark Brown Say yes here to access the GPIO signals of WM8994 audio hub 4872955c309SMark Brown CODECs from Wolfson Microelectronics. 4882955c309SMark Brown 489ef72af40SMichael Hennerichconfig GPIO_ADP5520 490ef72af40SMichael Hennerich tristate "GPIO Support for ADP5520 PMIC" 491ef72af40SMichael Hennerich depends on PMIC_ADP5520 492ef72af40SMichael Hennerich help 493ef72af40SMichael Hennerich This option enables support for on-chip GPIO found 494ef72af40SMichael Hennerich on Analog Devices ADP5520 PMICs. 495ef72af40SMichael Hennerich 49680884094SMichael Hennerichconfig GPIO_ADP5588 49780884094SMichael Hennerich tristate "ADP5588 I2C GPIO expander" 49880884094SMichael Hennerich depends on I2C 49980884094SMichael Hennerich help 50080884094SMichael Hennerich This option enables support for 18 GPIOs found 50180884094SMichael Hennerich on Analog Devices ADP5588 GPIO Expanders. 50280884094SMichael Hennerich 503459773aeSMichael Hennerichconfig GPIO_ADP5588_IRQ 504459773aeSMichael Hennerich bool "Interrupt controller support for ADP5588" 505459773aeSMichael Hennerich depends on GPIO_ADP5588=y 506459773aeSMichael Hennerich help 507459773aeSMichael Hennerich Say yes here to enable the adp5588 to be used as an interrupt 508459773aeSMichael Hennerich controller. It requires the driver to be built in the kernel. 509459773aeSMichael Hennerich 5105e969a40SThierry Redingconfig GPIO_ADNP 5115e969a40SThierry Reding tristate "Avionic Design N-bit GPIO expander" 512cb144fe8SThierry Reding depends on I2C && OF_GPIO 5135e969a40SThierry Reding help 5145e969a40SThierry Reding This option enables support for N GPIOs found on Avionic Design 5155e969a40SThierry Reding I2C GPIO expanders. The register space will be extended by powers 516e41e85ccSMasanari Iida of two, so the controller will need to accommodate for that. For 5175e969a40SThierry Reding example: if a controller provides 48 pins, 6 registers will be 5185e969a40SThierry Reding enough to represent all pins, but the driver will assume a 5195e969a40SThierry Reding register layout for 64 pins (8 registers). 5205e969a40SThierry Reding 521ff1d5c2fSMichael Bueschcomment "PCI GPIO expanders:" 522ff1d5c2fSMichael Buesch 5235f0a96b0SAndres Salomonconfig GPIO_CS5535 5245f0a96b0SAndres Salomon tristate "AMD CS5535/CS5536 GPIO support" 525babf000eSPaul Bolle depends on PCI && X86 && MFD_CS5535 5265f0a96b0SAndres Salomon help 5275f0a96b0SAndres Salomon The AMD CS5535 and CS5536 southbridges support 28 GPIO pins that 5285f0a96b0SAndres Salomon can be used for quite a number of things. The CS5535/6 is found on 5295f0a96b0SAndres Salomon AMD Geode and Lemote Yeeloong devices. 5305f0a96b0SAndres Salomon 5315f0a96b0SAndres Salomon If unsure, say N. 5325f0a96b0SAndres Salomon 533ff1d5c2fSMichael Bueschconfig GPIO_BT8XX 534ff1d5c2fSMichael Buesch tristate "BT8XX GPIO abuser" 535ff1d5c2fSMichael Buesch depends on PCI && VIDEO_BT848=n 536ff1d5c2fSMichael Buesch help 537ff1d5c2fSMichael Buesch The BT8xx frame grabber chip has 24 GPIO pins than can be abused 538ff1d5c2fSMichael Buesch as a cheap PCI GPIO card. 539ff1d5c2fSMichael Buesch 540ff1d5c2fSMichael Buesch This chip can be found on Miro, Hauppauge and STB TV-cards. 541ff1d5c2fSMichael Buesch 542ff1d5c2fSMichael Buesch The card needs to be physically altered for using it as a 543ff1d5c2fSMichael Buesch GPIO card. For more information on how to build a GPIO card 544ff1d5c2fSMichael Buesch from a BT8xx TV card, see the documentation file at 545ff1d5c2fSMichael Buesch Documentation/bt8xxgpio.txt 546ff1d5c2fSMichael Buesch 547ff1d5c2fSMichael Buesch If unsure, say N. 548ff1d5c2fSMichael Buesch 549f942a7deSDmitry Eremin-Solenikovconfig GPIO_AMD8111 550f942a7deSDmitry Eremin-Solenikov tristate "AMD 8111 GPIO driver" 551f942a7deSDmitry Eremin-Solenikov depends on PCI 552f942a7deSDmitry Eremin-Solenikov help 553f942a7deSDmitry Eremin-Solenikov The AMD 8111 south bridge contains 32 GPIO pins which can be used. 554f942a7deSDmitry Eremin-Solenikov 555f942a7deSDmitry Eremin-Solenikov Note, that usually system firmware/ACPI handles GPIO pins on their 556f942a7deSDmitry Eremin-Solenikov own and users might easily break their systems with uncarefull usage 557f942a7deSDmitry Eremin-Solenikov of this driver! 558f942a7deSDmitry Eremin-Solenikov 559f942a7deSDmitry Eremin-Solenikov If unsure, say N 560f942a7deSDmitry Eremin-Solenikov 5618bf02617SAlek Duconfig GPIO_LANGWELL 5628081c84cSAlek Du bool "Intel Langwell/Penwell GPIO support" 56361ab3fe5SThomas Gleixner depends on PCI && X86 564465f2bd4SMika Westerberg select IRQ_DOMAIN 5658bf02617SAlek Du help 5668081c84cSAlek Du Say Y here to support Intel Langwell/Penwell GPIO. 5678bf02617SAlek Du 56804c17aa8STomoya MORINAGAconfig GPIO_PCH 569868fea05STomoya MORINAGA tristate "Intel EG20T PCH/LAPIS Semiconductor IOH(ML7223/ML7831) GPIO" 57061ab3fe5SThomas Gleixner depends on PCI && X86 57138eb18a6STomoya MORINAGA select GENERIC_IRQ_CHIP 57204c17aa8STomoya MORINAGA help 57304c17aa8STomoya MORINAGA This driver is for PCH(Platform controller Hub) GPIO of Intel Topcliff 57404c17aa8STomoya MORINAGA which is an IOH(Input/Output Hub) for x86 embedded processor. 57504c17aa8STomoya MORINAGA This driver can access PCH GPIO device. 57604c17aa8STomoya MORINAGA 577868fea05STomoya MORINAGA This driver also can be used for LAPIS Semiconductor IOH(Input/ 578868fea05STomoya MORINAGA Output Hub), ML7223 and ML7831. 579bc786cceSTomoya MORINAGA ML7223 IOH is for MP(Media Phone) use. 580868fea05STomoya MORINAGA ML7831 IOH is for general purpose use. 581868fea05STomoya MORINAGA ML7223/ML7831 is companion chip for Intel Atom E6xx series. 582868fea05STomoya MORINAGA ML7223/ML7831 is completely compatible for Intel EG20T PCH. 583bc786cceSTomoya MORINAGA 58449a36793STomoya MORINAGAconfig GPIO_ML_IOH 58549a36793STomoya MORINAGA tristate "OKI SEMICONDUCTOR ML7213 IOH GPIO support" 58649a36793STomoya MORINAGA depends on PCI 58754be5663STomoya MORINAGA select GENERIC_IRQ_CHIP 58849a36793STomoya MORINAGA help 58949a36793STomoya MORINAGA ML7213 is companion chip for Intel Atom E6xx series. 59049a36793STomoya MORINAGA This driver can be used for OKI SEMICONDUCTOR ML7213 IOH(Input/Output 59149a36793STomoya MORINAGA Hub) which is for IVI(In-Vehicle Infotainment) use. 59249a36793STomoya MORINAGA This driver can access the IOH's GPIO device. 59349a36793STomoya MORINAGA 594b43ab901SSebastian Andrzej Siewiorconfig GPIO_SODAVILLE 595b43ab901SSebastian Andrzej Siewior bool "Intel Sodaville GPIO support" 5963ffc9cebSGrant Likely depends on X86 && PCI && OF 597b43ab901SSebastian Andrzej Siewior select GPIO_GENERIC 598b43ab901SSebastian Andrzej Siewior select GENERIC_IRQ_CHIP 599b43ab901SSebastian Andrzej Siewior help 600b43ab901SSebastian Andrzej Siewior Say Y here to support Intel Sodaville GPIO. 601b43ab901SSebastian Andrzej Siewior 60235570ac6SRichard Röjforsconfig GPIO_TIMBERDALE 60335570ac6SRichard Röjfors bool "Support for timberdale GPIO IP" 6046cff9e2bSH Hartley Sweeten depends on MFD_TIMBERDALE && HAS_IOMEM 60535570ac6SRichard Röjfors ---help--- 60635570ac6SRichard Röjfors Add support for the GPIO IP in the timberdale FPGA. 60735570ac6SRichard Röjfors 6089956d02dSFlorian Fainelliconfig GPIO_RDC321X 6099956d02dSFlorian Fainelli tristate "RDC R-321x GPIO support" 6106cff9e2bSH Hartley Sweeten depends on PCI 611e4be3cb7SRandy Dunlap select MFD_CORE 6129956d02dSFlorian Fainelli select MFD_RDC321X 6139956d02dSFlorian Fainelli help 6149956d02dSFlorian Fainelli Support for the RDC R321x SoC GPIOs over southbridge 6159956d02dSFlorian Fainelli PCI configuration space. 6169956d02dSFlorian Fainelli 617a9c5fff5SDavid Brownellcomment "SPI GPIO expanders:" 618a9c5fff5SDavid Brownell 6190c36ec31SJuergen Beisertconfig GPIO_MAX7301 6200c36ec31SJuergen Beisert tristate "Maxim MAX7301 GPIO expander" 6210c36ec31SJuergen Beisert depends on SPI_MASTER 622e952805dSWolfram Sang select GPIO_MAX730X 6230c36ec31SJuergen Beisert help 624e952805dSWolfram Sang GPIO driver for Maxim MAX7301 SPI-based GPIO expander. 6250c36ec31SJuergen Beisert 626e58b9e27SDavid Brownellconfig GPIO_MCP23S08 627752ad5e8SPeter Korsgaard tristate "Microchip MCP23xxx I/O expander" 628752ad5e8SPeter Korsgaard depends on SPI_MASTER || I2C 629e58b9e27SDavid Brownell help 630752ad5e8SPeter Korsgaard SPI/I2C driver for Microchip MCP23S08/MCP23S17/MCP23008/MCP23017 631752ad5e8SPeter Korsgaard I/O expanders. 6320b7bb77fSPeter Korsgaard This provides a GPIO interface supporting inputs and outputs. 633e58b9e27SDavid Brownell 6341e5db006SRichard Röjforsconfig GPIO_MC33880 6351e5db006SRichard Röjfors tristate "Freescale MC33880 high-side/low-side switch" 6361e5db006SRichard Röjfors depends on SPI_MASTER 6371e5db006SRichard Röjfors help 6381e5db006SRichard Röjfors SPI driver for Freescale MC33880 high-side/low-side switch. 6391e5db006SRichard Röjfors This provides GPIO interface supporting inputs and outputs. 6401e5db006SRichard Röjfors 641ead6db08SMiguel Gaioconfig GPIO_74X164 642ead6db08SMiguel Gaio tristate "74x164 serial-in/parallel-out 8-bits shift register" 643ead6db08SMiguel Gaio depends on SPI_MASTER 644ead6db08SMiguel Gaio help 645ead6db08SMiguel Gaio Platform driver for 74x164 compatible serial-in/parallel-out 646ead6db08SMiguel Gaio 8-outputs shift registers. This driver can be used to provide access 647ead6db08SMiguel Gaio to more gpio outputs. 648ead6db08SMiguel Gaio 6494cf8e53bSMarek Vasutcomment "AC97 GPIO expanders:" 6504cf8e53bSMarek Vasut 6514cf8e53bSMarek Vasutconfig GPIO_UCB1400 6524cf8e53bSMarek Vasut bool "Philips UCB1400 GPIO" 6534cf8e53bSMarek Vasut depends on UCB1400_CORE 6544cf8e53bSMarek Vasut help 6554cf8e53bSMarek Vasut This enables support for the Philips UCB1400 GPIO pins. 6564cf8e53bSMarek Vasut The UCB1400 is an AC97 audio codec. 6574cf8e53bSMarek Vasut 658800e69fbSIra W. Snydercomment "MODULbus GPIO expanders:" 659800e69fbSIra W. Snyder 660800e69fbSIra W. Snyderconfig GPIO_JANZ_TTL 661800e69fbSIra W. Snyder tristate "Janz VMOD-TTL Digital IO Module" 662800e69fbSIra W. Snyder depends on MFD_JANZ_CMODIO 663800e69fbSIra W. Snyder help 664800e69fbSIra W. Snyder This enables support for the Janz VMOD-TTL Digital IO module. 665800e69fbSIra W. Snyder This driver provides support for driving the pins in output 666800e69fbSIra W. Snyder mode only. Input mode is not supported. 667800e69fbSIra W. Snyder 668c103de24SGrant Likelyconfig GPIO_AB8500 6690cb3fcd7SBibek Basu bool "ST-Ericsson AB8500 Mixed Signal Circuit gpio functions" 6709ad198cbSThomas Gleixner depends on AB8500_CORE && BROKEN 6710cb3fcd7SBibek Basu help 6720cb3fcd7SBibek Basu Select this to enable the AB8500 IC GPIO driver 67383545d83SJorge Eduardo Candelaria 67472bd9860SLaxman Dewanganconfig GPIO_TPS6586X 67572bd9860SLaxman Dewangan bool "TPS6586X GPIO" 67672bd9860SLaxman Dewangan depends on MFD_TPS6586X 67772bd9860SLaxman Dewangan help 67872bd9860SLaxman Dewangan Select this option to enable GPIO driver for the TPS6586X 67972bd9860SLaxman Dewangan chip family. 68072bd9860SLaxman Dewangan 68183545d83SJorge Eduardo Candelariaconfig GPIO_TPS65910 68283545d83SJorge Eduardo Candelaria bool "TPS65910 GPIO" 68383545d83SJorge Eduardo Candelaria depends on MFD_TPS65910 68483545d83SJorge Eduardo Candelaria help 68583545d83SJorge Eduardo Candelaria Select this option to enable GPIO driver for the TPS65910 68683545d83SJorge Eduardo Candelaria chip family. 68725cf2507SMathias Nyman 68825cf2507SMathias Nymanconfig GPIO_MSIC 68925cf2507SMathias Nyman bool "Intel MSIC mixed signal gpio support" 69025cf2507SMathias Nyman depends on MFD_INTEL_MSIC 69125cf2507SMathias Nyman help 69225cf2507SMathias Nyman Enable support for GPIO on intel MSIC controllers found in 69325cf2507SMathias Nyman intel MID devices 69425cf2507SMathias Nyman 6959d5b72deSLars Poeschelcomment "USB GPIO expanders:" 6969d5b72deSLars Poeschel 6979d5b72deSLars Poeschelconfig GPIO_VIPERBOARD 6989d5b72deSLars Poeschel tristate "Viperboard GPIO a & b support" 6999d5b72deSLars Poeschel depends on MFD_VIPERBOARD && USB 7009d5b72deSLars Poeschel help 7019d5b72deSLars Poeschel Say yes here to access the GPIO signals of Nano River 7029d5b72deSLars Poeschel Technologies Viperboard. There are two GPIO chips on the 7039d5b72deSLars Poeschel board: gpioa and gpiob. 7049d5b72deSLars Poeschel See viperboard API specification and Nano 7059d5b72deSLars Poeschel River Tech's viperboard.h for detailed meaning 7069d5b72deSLars Poeschel of the module parameters. 7079d5b72deSLars Poeschel 7087444a72eSMichael Bueschendif 709