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