1# 2# GPIO infrastructure and drivers 3# 4 5config ARCH_HAVE_CUSTOM_GPIO_H 6 bool 7 help 8 Selecting this config option from the architecture Kconfig allows 9 the architecture to provide a custom asm/gpio.h implementation 10 overriding the default implementations. New uses of this are 11 strongly discouraged. 12 13config ARCH_WANT_OPTIONAL_GPIOLIB 14 bool 15 help 16 Select this config option from the architecture Kconfig, if 17 it is possible to use gpiolib on the architecture, but let the 18 user decide whether to actually build it or not. 19 Select this instead of ARCH_REQUIRE_GPIOLIB, if your architecture does 20 not depend on GPIOs being available, but rather let the user 21 decide whether he needs it or not. 22 23config ARCH_REQUIRE_GPIOLIB 24 bool 25 select GPIOLIB 26 help 27 Platforms select gpiolib if they use this infrastructure 28 for all their GPIOs, usually starting with ones integrated 29 into SOC processors. 30 Selecting this from the architecture code will cause the gpiolib 31 code to always get built in. 32 33 34 35menuconfig GPIOLIB 36 bool "GPIO Support" 37 depends on ARCH_WANT_OPTIONAL_GPIOLIB || ARCH_REQUIRE_GPIOLIB 38 select GENERIC_GPIO 39 help 40 This enables GPIO support through the generic GPIO library. 41 You only need to enable this, if you also want to enable 42 one or more of the GPIO drivers below. 43 44 If unsure, say N. 45 46if GPIOLIB 47 48config OF_GPIO 49 def_bool y 50 depends on OF && !SPARC 51 52config DEBUG_GPIO 53 bool "Debug GPIO calls" 54 depends on DEBUG_KERNEL 55 help 56 Say Y here to add some extra checks and diagnostics to GPIO calls. 57 These checks help ensure that GPIOs have been properly initialized 58 before they are used, and that sleeping calls are not made from 59 non-sleeping contexts. They can make bitbanged serial protocols 60 slower. The diagnostics help catch the type of setup errors 61 that are most common when setting up new platforms or boards. 62 63config GPIO_SYSFS 64 bool "/sys/class/gpio/... (sysfs interface)" 65 depends on SYSFS && EXPERIMENTAL 66 help 67 Say Y here to add a sysfs interface for GPIOs. 68 69 This is mostly useful to work around omissions in a system's 70 kernel support. Those are common in custom and semicustom 71 hardware assembled using standard kernels with a minimum of 72 custom patches. In those cases, userspace code may import 73 a given GPIO from the kernel, if no kernel driver requested it. 74 75 Kernel drivers may also request that a particular GPIO be 76 exported to userspace; this can be useful when debugging. 77 78config GPIO_GENERIC 79 tristate 80 81# put drivers in the right section, in alphabetical order 82 83config GPIO_DA9052 84 tristate "Dialog DA9052 GPIO" 85 depends on PMIC_DA9052 86 help 87 Say yes here to enable the GPIO driver for the DA9052 chip. 88 89config GPIO_MAX730X 90 tristate 91 92comment "Memory mapped GPIO drivers:" 93 94config GPIO_GENERIC_PLATFORM 95 tristate "Generic memory-mapped GPIO controller support (MMIO platform device)" 96 select GPIO_GENERIC 97 help 98 Say yes here to support basic platform_device memory-mapped GPIO controllers. 99 100config GPIO_IT8761E 101 tristate "IT8761E GPIO support" 102 depends on X86 # unconditional access to IO space. 103 help 104 Say yes here to support GPIO functionality of IT8761E super I/O chip. 105 106config GPIO_EM 107 tristate "Emma Mobile GPIO" 108 depends on ARM 109 help 110 Say yes here to support GPIO on Renesas Emma Mobile SoCs. 111 112config GPIO_EP93XX 113 def_bool y 114 depends on ARCH_EP93XX 115 select GPIO_GENERIC 116 117config GPIO_MM_LANTIQ 118 bool "Lantiq Memory mapped GPIOs" 119 depends on LANTIQ && SOC_XWAY 120 help 121 This enables support for memory mapped GPIOs on the External Bus Unit 122 (EBU) found on Lantiq SoCs. The gpios are output only as they are 123 created by attaching a 16bit latch to the bus. 124 125config GPIO_MPC5200 126 def_bool y 127 depends on PPC_MPC52xx 128 129config GPIO_MPC8XXX 130 bool "MPC512x/MPC8xxx GPIO support" 131 depends on PPC_MPC512x || PPC_MPC831x || PPC_MPC834x || PPC_MPC837x || \ 132 FSL_SOC_BOOKE || PPC_86xx 133 help 134 Say Y here if you're going to use hardware that connects to the 135 MPC512x/831x/834x/837x/8572/8610 GPIOs. 136 137config GPIO_MSM_V1 138 tristate "Qualcomm MSM GPIO v1" 139 depends on GPIOLIB && ARCH_MSM && (ARCH_MSM7X00A || ARCH_MSM7X30 || ARCH_QSD8X50) 140 help 141 Say yes here to support the GPIO interface on ARM v6 based 142 Qualcomm MSM chips. Most of the pins on the MSM can be 143 selected for GPIO, and are controlled by this driver. 144 145config GPIO_MSM_V2 146 tristate "Qualcomm MSM GPIO v2" 147 depends on GPIOLIB && ARCH_MSM 148 help 149 Say yes here to support the GPIO interface on ARM v7 based 150 Qualcomm MSM chips. Most of the pins on the MSM can be 151 selected for GPIO, and are controlled by this driver. 152 153config GPIO_MXC 154 def_bool y 155 depends on ARCH_MXC 156 select GPIO_GENERIC 157 select GENERIC_IRQ_CHIP 158 159config GPIO_MXS 160 def_bool y 161 depends on ARCH_MXS 162 select GPIO_GENERIC 163 select GENERIC_IRQ_CHIP 164 165config GPIO_PL061 166 bool "PrimeCell PL061 GPIO support" 167 depends on ARM_AMBA 168 select GENERIC_IRQ_CHIP 169 help 170 Say yes here to support the PrimeCell PL061 GPIO device 171 172config GPIO_PXA 173 bool "PXA GPIO support" 174 depends on ARCH_PXA || ARCH_MMP 175 help 176 Say yes here to support the PXA GPIO device 177 178config GPIO_STA2X11 179 bool "STA2x11/ConneXt GPIO support" 180 depends on MFD_STA2X11 181 select GENERIC_IRQ_CHIP 182 help 183 Say yes here to support the STA2x11/ConneXt GPIO device. 184 The GPIO module has 128 GPIO pins with alternate functions. 185 186config GPIO_VT8500 187 bool "VIA/Wondermedia SoC GPIO Support" 188 depends on ARCH_VT8500 189 help 190 Say yes here to support the VT8500/WM8505/WM8650 GPIO controller. 191 192config GPIO_XILINX 193 bool "Xilinx GPIO support" 194 depends on PPC_OF || MICROBLAZE 195 help 196 Say yes here to support the Xilinx FPGA GPIO device 197 198config GPIO_VR41XX 199 tristate "NEC VR4100 series General-purpose I/O Uint support" 200 depends on CPU_VR41XX 201 help 202 Say yes here to support the NEC VR4100 series General-purpose I/O Uint 203 204config GPIO_SCH 205 tristate "Intel SCH/TunnelCreek/Centerton GPIO" 206 depends on PCI && X86 207 select MFD_CORE 208 select LPC_SCH 209 help 210 Say yes here to support GPIO interface on Intel Poulsbo SCH, 211 Intel Tunnel Creek processor or Intel Centerton processor. 212 The Intel SCH contains a total of 14 GPIO pins. Ten GPIOs are 213 powered by the core power rail and are turned off during sleep 214 modes (S3 and higher). The remaining four GPIOs are powered by 215 the Intel SCH suspend power supply. These GPIOs remain 216 active during S3. The suspend powered GPIOs can be used to wake the 217 system from the Suspend-to-RAM state. 218 The Intel Tunnel Creek processor has 5 GPIOs powered by the 219 core power rail and 9 from suspend power supply. 220 The Intel Centerton processor has a total of 30 GPIO pins. 221 Twenty-one are powered by the core power rail and 9 from the 222 suspend power supply. 223 224config GPIO_ICH 225 tristate "Intel ICH GPIO" 226 depends on PCI && X86 227 select MFD_CORE 228 select LPC_ICH 229 help 230 Say yes here to support the GPIO functionality of a number of Intel 231 ICH-based chipsets. Currently supported devices: ICH6, ICH7, ICH8 232 ICH9, ICH10, Series 5/3400 (eg Ibex Peak), Series 6/C200 (eg 233 Cougar Point), NM10 (Tiger Point), and 3100 (Whitmore Lake). 234 235 If unsure, say N. 236 237config GPIO_VX855 238 tristate "VIA VX855/VX875 GPIO" 239 depends on PCI 240 select MFD_CORE 241 select MFD_VX855 242 help 243 Support access to the VX855/VX875 GPIO lines through the gpio library. 244 245 This driver provides common support for accessing the device, 246 additional drivers must be enabled in order to use the 247 functionality of the device. 248 249config GPIO_GE_FPGA 250 bool "GE FPGA based GPIO" 251 depends on GE_FPGA 252 help 253 Support for common GPIO functionality provided on some GE Single Board 254 Computers. 255 256 This driver provides basic support (configure as input or output, read 257 and write pin state) for GPIO implemented in a number of GE single 258 board computers. 259 260comment "I2C GPIO expanders:" 261 262config GPIO_ARIZONA 263 tristate "Wolfson Microelectronics Arizona class devices" 264 depends on MFD_ARIZONA 265 help 266 Support for GPIOs on Wolfson Arizona class devices. 267 268config GPIO_MAX7300 269 tristate "Maxim MAX7300 GPIO expander" 270 depends on I2C 271 select GPIO_MAX730X 272 help 273 GPIO driver for Maxim MAX7301 I2C-based GPIO expander. 274 275config GPIO_MAX732X 276 tristate "MAX7319, MAX7320-7327 I2C Port Expanders" 277 depends on I2C 278 help 279 Say yes here to support the MAX7319, MAX7320-7327 series of I2C 280 Port Expanders. Each IO port on these chips has a fixed role of 281 Input (designated by 'I'), Push-Pull Output ('O'), or Open-Drain 282 Input and Output (designed by 'P'). The combinations are listed 283 below: 284 285 8 bits: max7319 (8I), max7320 (8O), max7321 (8P), 286 max7322 (4I4O), max7323 (4P4O) 287 288 16 bits: max7324 (8I8O), max7325 (8P8O), 289 max7326 (4I12O), max7327 (4P12O) 290 291 Board setup code must specify the model to use, and the start 292 number for these GPIOs. 293 294config GPIO_MAX732X_IRQ 295 bool "Interrupt controller support for MAX732x" 296 depends on GPIO_MAX732X=y && GENERIC_HARDIRQS 297 help 298 Say yes here to enable the max732x to be used as an interrupt 299 controller. It requires the driver to be built in the kernel. 300 301config GPIO_MC9S08DZ60 302 bool "MX35 3DS BOARD MC9S08DZ60 GPIO functions" 303 depends on I2C=y && MACH_MX35_3DS 304 help 305 Select this to enable the MC9S08DZ60 GPIO driver 306 307config GPIO_PCA953X 308 tristate "PCA953x, PCA955x, PCA957x, TCA64xx, and MAX7310 I/O ports" 309 depends on I2C 310 help 311 Say yes here to provide access to several register-oriented 312 SMBus I/O expanders, made mostly by NXP or TI. Compatible 313 models include: 314 315 4 bits: pca9536, pca9537 316 317 8 bits: max7310, max7315, pca6107, pca9534, pca9538, pca9554, 318 pca9556, pca9557, pca9574, tca6408 319 320 16 bits: max7312, max7313, pca9535, pca9539, pca9555, pca9575, 321 tca6416 322 323config GPIO_PCA953X_IRQ 324 bool "Interrupt controller support for PCA953x" 325 depends on GPIO_PCA953X=y 326 help 327 Say yes here to enable the pca953x to be used as an interrupt 328 controller. It requires the driver to be built in the kernel. 329 330config GPIO_PCF857X 331 tristate "PCF857x, PCA{85,96}7x, and MAX732[89] I2C GPIO expanders" 332 depends on I2C 333 select IRQ_DOMAIN 334 help 335 Say yes here to provide access to most "quasi-bidirectional" I2C 336 GPIO expanders used for additional digital outputs or inputs. 337 Most of these parts are from NXP, though TI is a second source for 338 some of them. Compatible models include: 339 340 8 bits: pcf8574, pcf8574a, pca8574, pca8574a, 341 pca9670, pca9672, pca9674, pca9674a, 342 max7328, max7329 343 344 16 bits: pcf8575, pcf8575c, pca8575, 345 pca9671, pca9673, pca9675 346 347 Your board setup code will need to declare the expanders in 348 use, and assign numbers to the GPIOs they expose. Those GPIOs 349 can then be used from drivers and other kernel code, just like 350 other GPIOs, but only accessible from task contexts. 351 352 This driver provides an in-kernel interface to those GPIOs using 353 platform-neutral GPIO calls. 354 355config GPIO_RC5T583 356 bool "RICOH RC5T583 GPIO" 357 depends on MFD_RC5T583 358 help 359 Select this option to enable GPIO driver for the Ricoh RC5T583 360 chip family. 361 This driver provides the support for driving/reading the gpio pins 362 of RC5T583 device through standard gpio library. 363 364config GPIO_SX150X 365 bool "Semtech SX150x I2C GPIO expander" 366 depends on I2C=y 367 default n 368 help 369 Say yes here to provide support for Semtech SX150-series I2C 370 GPIO expanders. Compatible models include: 371 372 8 bits: sx1508q 373 16 bits: sx1509q 374 375config GPIO_STMPE 376 bool "STMPE GPIOs" 377 depends on MFD_STMPE 378 help 379 This enables support for the GPIOs found on the STMPE I/O 380 Expanders. 381 382config GPIO_STP_XWAY 383 bool "XWAY STP GPIOs" 384 depends on SOC_XWAY 385 help 386 This enables support for the Serial To Parallel (STP) unit found on 387 XWAY SoC. The STP allows the SoC to drive a shift registers cascade, 388 that can be up to 24 bit. This peripheral is aimed at driving leds. 389 Some of the gpios/leds can be auto updated by the soc with dsl and 390 phy status. 391 392config GPIO_TC3589X 393 bool "TC3589X GPIOs" 394 depends on MFD_TC3589X 395 help 396 This enables support for the GPIOs found on the TC3589X 397 I/O Expander. 398 399config GPIO_TPS65912 400 tristate "TI TPS65912 GPIO" 401 depends on (MFD_TPS65912_I2C || MFD_TPS65912_SPI) 402 help 403 This driver supports TPS65912 gpio chip 404 405config GPIO_TWL4030 406 tristate "TWL4030, TWL5030, and TPS659x0 GPIOs" 407 depends on TWL4030_CORE 408 help 409 Say yes here to access the GPIO signals of various multi-function 410 power management chips from Texas Instruments. 411 412config GPIO_WM831X 413 tristate "WM831x GPIOs" 414 depends on MFD_WM831X 415 help 416 Say yes here to access the GPIO signals of WM831x power management 417 chips from Wolfson Microelectronics. 418 419config GPIO_WM8350 420 tristate "WM8350 GPIOs" 421 depends on MFD_WM8350 422 help 423 Say yes here to access the GPIO signals of WM8350 power management 424 chips from Wolfson Microelectronics. 425 426config GPIO_WM8994 427 tristate "WM8994 GPIOs" 428 depends on MFD_WM8994 429 help 430 Say yes here to access the GPIO signals of WM8994 audio hub 431 CODECs from Wolfson Microelectronics. 432 433config GPIO_ADP5520 434 tristate "GPIO Support for ADP5520 PMIC" 435 depends on PMIC_ADP5520 436 help 437 This option enables support for on-chip GPIO found 438 on Analog Devices ADP5520 PMICs. 439 440config GPIO_ADP5588 441 tristate "ADP5588 I2C GPIO expander" 442 depends on I2C 443 help 444 This option enables support for 18 GPIOs found 445 on Analog Devices ADP5588 GPIO Expanders. 446 447config GPIO_ADP5588_IRQ 448 bool "Interrupt controller support for ADP5588" 449 depends on GPIO_ADP5588=y 450 help 451 Say yes here to enable the adp5588 to be used as an interrupt 452 controller. It requires the driver to be built in the kernel. 453 454config GPIO_ADNP 455 tristate "Avionic Design N-bit GPIO expander" 456 depends on I2C && OF 457 help 458 This option enables support for N GPIOs found on Avionic Design 459 I2C GPIO expanders. The register space will be extended by powers 460 of two, so the controller will need to accomodate for that. For 461 example: if a controller provides 48 pins, 6 registers will be 462 enough to represent all pins, but the driver will assume a 463 register layout for 64 pins (8 registers). 464 465comment "PCI GPIO expanders:" 466 467config GPIO_CS5535 468 tristate "AMD CS5535/CS5536 GPIO support" 469 depends on PCI && X86 && MFD_CS5535 470 help 471 The AMD CS5535 and CS5536 southbridges support 28 GPIO pins that 472 can be used for quite a number of things. The CS5535/6 is found on 473 AMD Geode and Lemote Yeeloong devices. 474 475 If unsure, say N. 476 477config GPIO_BT8XX 478 tristate "BT8XX GPIO abuser" 479 depends on PCI && VIDEO_BT848=n 480 help 481 The BT8xx frame grabber chip has 24 GPIO pins than can be abused 482 as a cheap PCI GPIO card. 483 484 This chip can be found on Miro, Hauppauge and STB TV-cards. 485 486 The card needs to be physically altered for using it as a 487 GPIO card. For more information on how to build a GPIO card 488 from a BT8xx TV card, see the documentation file at 489 Documentation/bt8xxgpio.txt 490 491 If unsure, say N. 492 493config GPIO_AMD8111 494 tristate "AMD 8111 GPIO driver" 495 depends on PCI 496 help 497 The AMD 8111 south bridge contains 32 GPIO pins which can be used. 498 499 Note, that usually system firmware/ACPI handles GPIO pins on their 500 own and users might easily break their systems with uncarefull usage 501 of this driver! 502 503 If unsure, say N 504 505config GPIO_LANGWELL 506 bool "Intel Langwell/Penwell GPIO support" 507 depends on PCI && X86 508 select IRQ_DOMAIN 509 help 510 Say Y here to support Intel Langwell/Penwell GPIO. 511 512config GPIO_PCH 513 tristate "Intel EG20T PCH/LAPIS Semiconductor IOH(ML7223/ML7831) GPIO" 514 depends on PCI && X86 515 select GENERIC_IRQ_CHIP 516 help 517 This driver is for PCH(Platform controller Hub) GPIO of Intel Topcliff 518 which is an IOH(Input/Output Hub) for x86 embedded processor. 519 This driver can access PCH GPIO device. 520 521 This driver also can be used for LAPIS Semiconductor IOH(Input/ 522 Output Hub), ML7223 and ML7831. 523 ML7223 IOH is for MP(Media Phone) use. 524 ML7831 IOH is for general purpose use. 525 ML7223/ML7831 is companion chip for Intel Atom E6xx series. 526 ML7223/ML7831 is completely compatible for Intel EG20T PCH. 527 528config GPIO_ML_IOH 529 tristate "OKI SEMICONDUCTOR ML7213 IOH GPIO support" 530 depends on PCI 531 select GENERIC_IRQ_CHIP 532 help 533 ML7213 is companion chip for Intel Atom E6xx series. 534 This driver can be used for OKI SEMICONDUCTOR ML7213 IOH(Input/Output 535 Hub) which is for IVI(In-Vehicle Infotainment) use. 536 This driver can access the IOH's GPIO device. 537 538config GPIO_SODAVILLE 539 bool "Intel Sodaville GPIO support" 540 depends on X86 && PCI && OF 541 select GPIO_GENERIC 542 select GENERIC_IRQ_CHIP 543 help 544 Say Y here to support Intel Sodaville GPIO. 545 546config GPIO_TIMBERDALE 547 bool "Support for timberdale GPIO IP" 548 depends on MFD_TIMBERDALE && HAS_IOMEM 549 ---help--- 550 Add support for the GPIO IP in the timberdale FPGA. 551 552config GPIO_RDC321X 553 tristate "RDC R-321x GPIO support" 554 depends on PCI 555 select MFD_CORE 556 select MFD_RDC321X 557 help 558 Support for the RDC R321x SoC GPIOs over southbridge 559 PCI configuration space. 560 561comment "SPI GPIO expanders:" 562 563config GPIO_MAX7301 564 tristate "Maxim MAX7301 GPIO expander" 565 depends on SPI_MASTER 566 select GPIO_MAX730X 567 help 568 GPIO driver for Maxim MAX7301 SPI-based GPIO expander. 569 570config GPIO_MCP23S08 571 tristate "Microchip MCP23xxx I/O expander" 572 depends on SPI_MASTER || I2C 573 help 574 SPI/I2C driver for Microchip MCP23S08/MCP23S17/MCP23008/MCP23017 575 I/O expanders. 576 This provides a GPIO interface supporting inputs and outputs. 577 578config GPIO_MC33880 579 tristate "Freescale MC33880 high-side/low-side switch" 580 depends on SPI_MASTER 581 help 582 SPI driver for Freescale MC33880 high-side/low-side switch. 583 This provides GPIO interface supporting inputs and outputs. 584 585config GPIO_74X164 586 tristate "74x164 serial-in/parallel-out 8-bits shift register" 587 depends on SPI_MASTER 588 help 589 Platform driver for 74x164 compatible serial-in/parallel-out 590 8-outputs shift registers. This driver can be used to provide access 591 to more gpio outputs. 592 593comment "AC97 GPIO expanders:" 594 595config GPIO_UCB1400 596 bool "Philips UCB1400 GPIO" 597 depends on UCB1400_CORE 598 help 599 This enables support for the Philips UCB1400 GPIO pins. 600 The UCB1400 is an AC97 audio codec. 601 602comment "MODULbus GPIO expanders:" 603 604config GPIO_JANZ_TTL 605 tristate "Janz VMOD-TTL Digital IO Module" 606 depends on MFD_JANZ_CMODIO 607 help 608 This enables support for the Janz VMOD-TTL Digital IO module. 609 This driver provides support for driving the pins in output 610 mode only. Input mode is not supported. 611 612config GPIO_AB8500 613 bool "ST-Ericsson AB8500 Mixed Signal Circuit gpio functions" 614 depends on AB8500_CORE && BROKEN 615 help 616 Select this to enable the AB8500 IC GPIO driver 617 618config GPIO_TPS6586X 619 bool "TPS6586X GPIO" 620 depends on MFD_TPS6586X 621 help 622 Select this option to enable GPIO driver for the TPS6586X 623 chip family. 624 625config GPIO_TPS65910 626 bool "TPS65910 GPIO" 627 depends on MFD_TPS65910 628 help 629 Select this option to enable GPIO driver for the TPS65910 630 chip family. 631 632config GPIO_MSIC 633 bool "Intel MSIC mixed signal gpio support" 634 depends on MFD_INTEL_MSIC 635 help 636 Enable support for GPIO on intel MSIC controllers found in 637 intel MID devices 638 639endif 640