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_DA9055 90 tristate "Dialog Semiconductor DA9055 GPIO" 91 depends on MFD_DA9055 92 help 93 Say yes here to enable the GPIO driver for the DA9055 chip. 94 95 The Dialog DA9055 PMIC chip has 3 GPIO pins that can be 96 be controller by this driver. 97 98 If driver is built as a module it will be called gpio-da9055. 99 100config GPIO_MAX730X 101 tristate 102 103comment "Memory mapped GPIO drivers:" 104 105config GPIO_CLPS711X 106 def_bool y 107 depends on ARCH_CLPS711X 108 109config GPIO_GENERIC_PLATFORM 110 tristate "Generic memory-mapped GPIO controller support (MMIO platform device)" 111 select GPIO_GENERIC 112 help 113 Say yes here to support basic platform_device memory-mapped GPIO controllers. 114 115config GPIO_IT8761E 116 tristate "IT8761E GPIO support" 117 depends on X86 # unconditional access to IO space. 118 help 119 Say yes here to support GPIO functionality of IT8761E super I/O chip. 120 121config GPIO_EM 122 tristate "Emma Mobile GPIO" 123 depends on ARM 124 help 125 Say yes here to support GPIO on Renesas Emma Mobile SoCs. 126 127config GPIO_EP93XX 128 def_bool y 129 depends on ARCH_EP93XX 130 select GPIO_GENERIC 131 132config GPIO_MM_LANTIQ 133 bool "Lantiq Memory mapped GPIOs" 134 depends on LANTIQ && SOC_XWAY 135 help 136 This enables support for memory mapped GPIOs on the External Bus Unit 137 (EBU) found on Lantiq SoCs. The gpios are output only as they are 138 created by attaching a 16bit latch to the bus. 139 140config GPIO_MPC5200 141 def_bool y 142 depends on PPC_MPC52xx 143 144config GPIO_MPC8XXX 145 bool "MPC512x/MPC8xxx GPIO support" 146 depends on PPC_MPC512x || PPC_MPC831x || PPC_MPC834x || PPC_MPC837x || \ 147 FSL_SOC_BOOKE || PPC_86xx 148 help 149 Say Y here if you're going to use hardware that connects to the 150 MPC512x/831x/834x/837x/8572/8610 GPIOs. 151 152config GPIO_MSM_V1 153 tristate "Qualcomm MSM GPIO v1" 154 depends on GPIOLIB && ARCH_MSM && (ARCH_MSM7X00A || ARCH_MSM7X30 || ARCH_QSD8X50) 155 help 156 Say yes here to support the GPIO interface on ARM v6 based 157 Qualcomm MSM chips. Most of the pins on the MSM can be 158 selected for GPIO, and are controlled by this driver. 159 160config GPIO_MSM_V2 161 tristate "Qualcomm MSM GPIO v2" 162 depends on GPIOLIB && ARCH_MSM 163 help 164 Say yes here to support the GPIO interface on ARM v7 based 165 Qualcomm MSM chips. Most of the pins on the MSM can be 166 selected for GPIO, and are controlled by this driver. 167 168config GPIO_MVEBU 169 def_bool y 170 depends on ARCH_MVEBU 171 select GPIO_GENERIC 172 select GENERIC_IRQ_CHIP 173 174config GPIO_MXC 175 def_bool y 176 depends on ARCH_MXC 177 select GPIO_GENERIC 178 select GENERIC_IRQ_CHIP 179 180config GPIO_MXS 181 def_bool y 182 depends on ARCH_MXS 183 select GPIO_GENERIC 184 select GENERIC_IRQ_CHIP 185 186config GPIO_PL061 187 bool "PrimeCell PL061 GPIO support" 188 depends on ARM_AMBA 189 select GENERIC_IRQ_CHIP 190 help 191 Say yes here to support the PrimeCell PL061 GPIO device 192 193config GPIO_PXA 194 bool "PXA GPIO support" 195 depends on ARCH_PXA || ARCH_MMP 196 help 197 Say yes here to support the PXA GPIO device 198 199config GPIO_SPEAR_SPICS 200 bool "ST SPEAr13xx SPI Chip Select as GPIO support" 201 depends on PLAT_SPEAR 202 select GENERIC_IRQ_CHIP 203 help 204 Say yes here to support ST SPEAr SPI Chip Select as GPIO device 205 206config GPIO_STA2X11 207 bool "STA2x11/ConneXt GPIO support" 208 depends on MFD_STA2X11 209 select GENERIC_IRQ_CHIP 210 help 211 Say yes here to support the STA2x11/ConneXt GPIO device. 212 The GPIO module has 128 GPIO pins with alternate functions. 213 214config GPIO_VT8500 215 bool "VIA/Wondermedia SoC GPIO Support" 216 depends on ARCH_VT8500 217 help 218 Say yes here to support the VT8500/WM8505/WM8650 GPIO controller. 219 220config GPIO_XILINX 221 bool "Xilinx GPIO support" 222 depends on PPC_OF || MICROBLAZE 223 help 224 Say yes here to support the Xilinx FPGA GPIO device 225 226config GPIO_VR41XX 227 tristate "NEC VR4100 series General-purpose I/O Uint support" 228 depends on CPU_VR41XX 229 help 230 Say yes here to support the NEC VR4100 series General-purpose I/O Uint 231 232config GPIO_SCH 233 tristate "Intel SCH/TunnelCreek/Centerton GPIO" 234 depends on PCI && X86 235 select MFD_CORE 236 select LPC_SCH 237 help 238 Say yes here to support GPIO interface on Intel Poulsbo SCH, 239 Intel Tunnel Creek processor or Intel Centerton processor. 240 The Intel SCH contains a total of 14 GPIO pins. Ten GPIOs are 241 powered by the core power rail and are turned off during sleep 242 modes (S3 and higher). The remaining four GPIOs are powered by 243 the Intel SCH suspend power supply. These GPIOs remain 244 active during S3. The suspend powered GPIOs can be used to wake the 245 system from the Suspend-to-RAM state. 246 The Intel Tunnel Creek processor has 5 GPIOs powered by the 247 core power rail and 9 from suspend power supply. 248 The Intel Centerton processor has a total of 30 GPIO pins. 249 Twenty-one are powered by the core power rail and 9 from the 250 suspend power supply. 251 252config GPIO_ICH 253 tristate "Intel ICH GPIO" 254 depends on PCI && X86 255 select MFD_CORE 256 select LPC_ICH 257 help 258 Say yes here to support the GPIO functionality of a number of Intel 259 ICH-based chipsets. Currently supported devices: ICH6, ICH7, ICH8 260 ICH9, ICH10, Series 5/3400 (eg Ibex Peak), Series 6/C200 (eg 261 Cougar Point), NM10 (Tiger Point), and 3100 (Whitmore Lake). 262 263 If unsure, say N. 264 265config GPIO_VX855 266 tristate "VIA VX855/VX875 GPIO" 267 depends on PCI 268 select MFD_CORE 269 select MFD_VX855 270 help 271 Support access to the VX855/VX875 GPIO lines through the gpio library. 272 273 This driver provides common support for accessing the device, 274 additional drivers must be enabled in order to use the 275 functionality of the device. 276 277config GPIO_GE_FPGA 278 bool "GE FPGA based GPIO" 279 depends on GE_FPGA 280 help 281 Support for common GPIO functionality provided on some GE Single Board 282 Computers. 283 284 This driver provides basic support (configure as input or output, read 285 and write pin state) for GPIO implemented in a number of GE single 286 board computers. 287 288comment "I2C GPIO expanders:" 289 290config GPIO_ARIZONA 291 tristate "Wolfson Microelectronics Arizona class devices" 292 depends on MFD_ARIZONA 293 help 294 Support for GPIOs on Wolfson Arizona class devices. 295 296config GPIO_MAX7300 297 tristate "Maxim MAX7300 GPIO expander" 298 depends on I2C 299 select GPIO_MAX730X 300 help 301 GPIO driver for Maxim MAX7301 I2C-based GPIO expander. 302 303config GPIO_MAX732X 304 tristate "MAX7319, MAX7320-7327 I2C Port Expanders" 305 depends on I2C 306 help 307 Say yes here to support the MAX7319, MAX7320-7327 series of I2C 308 Port Expanders. Each IO port on these chips has a fixed role of 309 Input (designated by 'I'), Push-Pull Output ('O'), or Open-Drain 310 Input and Output (designed by 'P'). The combinations are listed 311 below: 312 313 8 bits: max7319 (8I), max7320 (8O), max7321 (8P), 314 max7322 (4I4O), max7323 (4P4O) 315 316 16 bits: max7324 (8I8O), max7325 (8P8O), 317 max7326 (4I12O), max7327 (4P12O) 318 319 Board setup code must specify the model to use, and the start 320 number for these GPIOs. 321 322config GPIO_MAX732X_IRQ 323 bool "Interrupt controller support for MAX732x" 324 depends on GPIO_MAX732X=y && GENERIC_HARDIRQS 325 help 326 Say yes here to enable the max732x to be used as an interrupt 327 controller. It requires the driver to be built in the kernel. 328 329config GPIO_MC9S08DZ60 330 bool "MX35 3DS BOARD MC9S08DZ60 GPIO functions" 331 depends on I2C=y && MACH_MX35_3DS 332 help 333 Select this to enable the MC9S08DZ60 GPIO driver 334 335config GPIO_PCA953X 336 tristate "PCA953x, PCA955x, PCA957x, TCA64xx, and MAX7310 I/O ports" 337 depends on I2C 338 help 339 Say yes here to provide access to several register-oriented 340 SMBus I/O expanders, made mostly by NXP or TI. Compatible 341 models include: 342 343 4 bits: pca9536, pca9537 344 345 8 bits: max7310, max7315, pca6107, pca9534, pca9538, pca9554, 346 pca9556, pca9557, pca9574, tca6408 347 348 16 bits: max7312, max7313, pca9535, pca9539, pca9555, pca9575, 349 tca6416 350 351config GPIO_PCA953X_IRQ 352 bool "Interrupt controller support for PCA953x" 353 depends on GPIO_PCA953X=y 354 help 355 Say yes here to enable the pca953x to be used as an interrupt 356 controller. It requires the driver to be built in the kernel. 357 358config GPIO_PCF857X 359 tristate "PCF857x, PCA{85,96}7x, and MAX732[89] I2C GPIO expanders" 360 depends on I2C 361 select IRQ_DOMAIN 362 help 363 Say yes here to provide access to most "quasi-bidirectional" I2C 364 GPIO expanders used for additional digital outputs or inputs. 365 Most of these parts are from NXP, though TI is a second source for 366 some of them. Compatible models include: 367 368 8 bits: pcf8574, pcf8574a, pca8574, pca8574a, 369 pca9670, pca9672, pca9674, pca9674a, 370 max7328, max7329 371 372 16 bits: pcf8575, pcf8575c, pca8575, 373 pca9671, pca9673, pca9675 374 375 Your board setup code will need to declare the expanders in 376 use, and assign numbers to the GPIOs they expose. Those GPIOs 377 can then be used from drivers and other kernel code, just like 378 other GPIOs, but only accessible from task contexts. 379 380 This driver provides an in-kernel interface to those GPIOs using 381 platform-neutral GPIO calls. 382 383config GPIO_RC5T583 384 bool "RICOH RC5T583 GPIO" 385 depends on MFD_RC5T583 386 help 387 Select this option to enable GPIO driver for the Ricoh RC5T583 388 chip family. 389 This driver provides the support for driving/reading the gpio pins 390 of RC5T583 device through standard gpio library. 391 392config GPIO_SX150X 393 bool "Semtech SX150x I2C GPIO expander" 394 depends on I2C=y 395 default n 396 help 397 Say yes here to provide support for Semtech SX150-series I2C 398 GPIO expanders. Compatible models include: 399 400 8 bits: sx1508q 401 16 bits: sx1509q 402 403config GPIO_STMPE 404 bool "STMPE GPIOs" 405 depends on MFD_STMPE 406 help 407 This enables support for the GPIOs found on the STMPE I/O 408 Expanders. 409 410config GPIO_STP_XWAY 411 bool "XWAY STP GPIOs" 412 depends on SOC_XWAY 413 help 414 This enables support for the Serial To Parallel (STP) unit found on 415 XWAY SoC. The STP allows the SoC to drive a shift registers cascade, 416 that can be up to 24 bit. This peripheral is aimed at driving leds. 417 Some of the gpios/leds can be auto updated by the soc with dsl and 418 phy status. 419 420config GPIO_TC3589X 421 bool "TC3589X GPIOs" 422 depends on MFD_TC3589X 423 help 424 This enables support for the GPIOs found on the TC3589X 425 I/O Expander. 426 427config GPIO_TPS65912 428 tristate "TI TPS65912 GPIO" 429 depends on (MFD_TPS65912_I2C || MFD_TPS65912_SPI) 430 help 431 This driver supports TPS65912 gpio chip 432 433config GPIO_TWL4030 434 tristate "TWL4030, TWL5030, and TPS659x0 GPIOs" 435 depends on TWL4030_CORE 436 help 437 Say yes here to access the GPIO signals of various multi-function 438 power management chips from Texas Instruments. 439 440config GPIO_TWL6040 441 tristate "TWL6040 GPO" 442 depends on TWL6040_CORE 443 help 444 Say yes here to access the GPO signals of twl6040 445 audio chip from Texas Instruments. 446 447config GPIO_WM831X 448 tristate "WM831x GPIOs" 449 depends on MFD_WM831X 450 help 451 Say yes here to access the GPIO signals of WM831x power management 452 chips from Wolfson Microelectronics. 453 454config GPIO_WM8350 455 tristate "WM8350 GPIOs" 456 depends on MFD_WM8350 457 help 458 Say yes here to access the GPIO signals of WM8350 power management 459 chips from Wolfson Microelectronics. 460 461config GPIO_WM8994 462 tristate "WM8994 GPIOs" 463 depends on MFD_WM8994 464 help 465 Say yes here to access the GPIO signals of WM8994 audio hub 466 CODECs from Wolfson Microelectronics. 467 468config GPIO_ADP5520 469 tristate "GPIO Support for ADP5520 PMIC" 470 depends on PMIC_ADP5520 471 help 472 This option enables support for on-chip GPIO found 473 on Analog Devices ADP5520 PMICs. 474 475config GPIO_ADP5588 476 tristate "ADP5588 I2C GPIO expander" 477 depends on I2C 478 help 479 This option enables support for 18 GPIOs found 480 on Analog Devices ADP5588 GPIO Expanders. 481 482config GPIO_ADP5588_IRQ 483 bool "Interrupt controller support for ADP5588" 484 depends on GPIO_ADP5588=y 485 help 486 Say yes here to enable the adp5588 to be used as an interrupt 487 controller. It requires the driver to be built in the kernel. 488 489config GPIO_ADNP 490 tristate "Avionic Design N-bit GPIO expander" 491 depends on I2C && OF 492 help 493 This option enables support for N GPIOs found on Avionic Design 494 I2C GPIO expanders. The register space will be extended by powers 495 of two, so the controller will need to accomodate for that. For 496 example: if a controller provides 48 pins, 6 registers will be 497 enough to represent all pins, but the driver will assume a 498 register layout for 64 pins (8 registers). 499 500comment "PCI GPIO expanders:" 501 502config GPIO_CS5535 503 tristate "AMD CS5535/CS5536 GPIO support" 504 depends on PCI && X86 && MFD_CS5535 505 help 506 The AMD CS5535 and CS5536 southbridges support 28 GPIO pins that 507 can be used for quite a number of things. The CS5535/6 is found on 508 AMD Geode and Lemote Yeeloong devices. 509 510 If unsure, say N. 511 512config GPIO_BT8XX 513 tristate "BT8XX GPIO abuser" 514 depends on PCI && VIDEO_BT848=n 515 help 516 The BT8xx frame grabber chip has 24 GPIO pins than can be abused 517 as a cheap PCI GPIO card. 518 519 This chip can be found on Miro, Hauppauge and STB TV-cards. 520 521 The card needs to be physically altered for using it as a 522 GPIO card. For more information on how to build a GPIO card 523 from a BT8xx TV card, see the documentation file at 524 Documentation/bt8xxgpio.txt 525 526 If unsure, say N. 527 528config GPIO_AMD8111 529 tristate "AMD 8111 GPIO driver" 530 depends on PCI 531 help 532 The AMD 8111 south bridge contains 32 GPIO pins which can be used. 533 534 Note, that usually system firmware/ACPI handles GPIO pins on their 535 own and users might easily break their systems with uncarefull usage 536 of this driver! 537 538 If unsure, say N 539 540config GPIO_LANGWELL 541 bool "Intel Langwell/Penwell GPIO support" 542 depends on PCI && X86 543 select IRQ_DOMAIN 544 help 545 Say Y here to support Intel Langwell/Penwell GPIO. 546 547config GPIO_PCH 548 tristate "Intel EG20T PCH/LAPIS Semiconductor IOH(ML7223/ML7831) GPIO" 549 depends on PCI && X86 550 select GENERIC_IRQ_CHIP 551 help 552 This driver is for PCH(Platform controller Hub) GPIO of Intel Topcliff 553 which is an IOH(Input/Output Hub) for x86 embedded processor. 554 This driver can access PCH GPIO device. 555 556 This driver also can be used for LAPIS Semiconductor IOH(Input/ 557 Output Hub), ML7223 and ML7831. 558 ML7223 IOH is for MP(Media Phone) use. 559 ML7831 IOH is for general purpose use. 560 ML7223/ML7831 is companion chip for Intel Atom E6xx series. 561 ML7223/ML7831 is completely compatible for Intel EG20T PCH. 562 563config GPIO_ML_IOH 564 tristate "OKI SEMICONDUCTOR ML7213 IOH GPIO support" 565 depends on PCI 566 select GENERIC_IRQ_CHIP 567 help 568 ML7213 is companion chip for Intel Atom E6xx series. 569 This driver can be used for OKI SEMICONDUCTOR ML7213 IOH(Input/Output 570 Hub) which is for IVI(In-Vehicle Infotainment) use. 571 This driver can access the IOH's GPIO device. 572 573config GPIO_SODAVILLE 574 bool "Intel Sodaville GPIO support" 575 depends on X86 && PCI && OF 576 select GPIO_GENERIC 577 select GENERIC_IRQ_CHIP 578 help 579 Say Y here to support Intel Sodaville GPIO. 580 581config GPIO_TIMBERDALE 582 bool "Support for timberdale GPIO IP" 583 depends on MFD_TIMBERDALE && HAS_IOMEM 584 ---help--- 585 Add support for the GPIO IP in the timberdale FPGA. 586 587config GPIO_RDC321X 588 tristate "RDC R-321x GPIO support" 589 depends on PCI 590 select MFD_CORE 591 select MFD_RDC321X 592 help 593 Support for the RDC R321x SoC GPIOs over southbridge 594 PCI configuration space. 595 596comment "SPI GPIO expanders:" 597 598config GPIO_MAX7301 599 tristate "Maxim MAX7301 GPIO expander" 600 depends on SPI_MASTER 601 select GPIO_MAX730X 602 help 603 GPIO driver for Maxim MAX7301 SPI-based GPIO expander. 604 605config GPIO_MCP23S08 606 tristate "Microchip MCP23xxx I/O expander" 607 depends on SPI_MASTER || I2C 608 help 609 SPI/I2C driver for Microchip MCP23S08/MCP23S17/MCP23008/MCP23017 610 I/O expanders. 611 This provides a GPIO interface supporting inputs and outputs. 612 613config GPIO_MC33880 614 tristate "Freescale MC33880 high-side/low-side switch" 615 depends on SPI_MASTER 616 help 617 SPI driver for Freescale MC33880 high-side/low-side switch. 618 This provides GPIO interface supporting inputs and outputs. 619 620config GPIO_74X164 621 tristate "74x164 serial-in/parallel-out 8-bits shift register" 622 depends on SPI_MASTER 623 help 624 Platform driver for 74x164 compatible serial-in/parallel-out 625 8-outputs shift registers. This driver can be used to provide access 626 to more gpio outputs. 627 628comment "AC97 GPIO expanders:" 629 630config GPIO_UCB1400 631 bool "Philips UCB1400 GPIO" 632 depends on UCB1400_CORE 633 help 634 This enables support for the Philips UCB1400 GPIO pins. 635 The UCB1400 is an AC97 audio codec. 636 637comment "MODULbus GPIO expanders:" 638 639config GPIO_JANZ_TTL 640 tristate "Janz VMOD-TTL Digital IO Module" 641 depends on MFD_JANZ_CMODIO 642 help 643 This enables support for the Janz VMOD-TTL Digital IO module. 644 This driver provides support for driving the pins in output 645 mode only. Input mode is not supported. 646 647config GPIO_AB8500 648 bool "ST-Ericsson AB8500 Mixed Signal Circuit gpio functions" 649 depends on AB8500_CORE && BROKEN 650 help 651 Select this to enable the AB8500 IC GPIO driver 652 653config GPIO_TPS6586X 654 bool "TPS6586X GPIO" 655 depends on MFD_TPS6586X 656 help 657 Select this option to enable GPIO driver for the TPS6586X 658 chip family. 659 660config GPIO_TPS65910 661 bool "TPS65910 GPIO" 662 depends on MFD_TPS65910 663 help 664 Select this option to enable GPIO driver for the TPS65910 665 chip family. 666 667config GPIO_MSIC 668 bool "Intel MSIC mixed signal gpio support" 669 depends on MFD_INTEL_MSIC 670 help 671 Enable support for GPIO on intel MSIC controllers found in 672 intel MID devices 673 674endif 675