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 34menuconfig GPIOLIB 35 bool "GPIO Support" 36 depends on ARCH_WANT_OPTIONAL_GPIOLIB || ARCH_REQUIRE_GPIOLIB 37 help 38 This enables GPIO support through the generic GPIO library. 39 You only need to enable this, if you also want to enable 40 one or more of the GPIO drivers below. 41 42 If unsure, say N. 43 44if GPIOLIB 45 46config GPIO_DEVRES 47 def_bool y 48 depends on HAS_IOMEM 49 50config OF_GPIO 51 def_bool y 52 depends on OF 53 54config GPIO_ACPI 55 def_bool y 56 depends on ACPI 57 58config GPIOLIB_IRQCHIP 59 select IRQ_DOMAIN 60 bool 61 62config DEBUG_GPIO 63 bool "Debug GPIO calls" 64 depends on DEBUG_KERNEL 65 help 66 Say Y here to add some extra checks and diagnostics to GPIO calls. 67 These checks help ensure that GPIOs have been properly initialized 68 before they are used, and that sleeping calls are not made from 69 non-sleeping contexts. They can make bitbanged serial protocols 70 slower. The diagnostics help catch the type of setup errors 71 that are most common when setting up new platforms or boards. 72 73config GPIO_SYSFS 74 bool "/sys/class/gpio/... (sysfs interface)" 75 depends on SYSFS 76 help 77 Say Y here to add a sysfs interface for GPIOs. 78 79 This is mostly useful to work around omissions in a system's 80 kernel support. Those are common in custom and semicustom 81 hardware assembled using standard kernels with a minimum of 82 custom patches. In those cases, userspace code may import 83 a given GPIO from the kernel, if no kernel driver requested it. 84 85 Kernel drivers may also request that a particular GPIO be 86 exported to userspace; this can be useful when debugging. 87 88config GPIO_GENERIC 89 tristate 90 91# put drivers in the right section, in alphabetical order 92 93config GPIO_DA9052 94 tristate "Dialog DA9052 GPIO" 95 depends on PMIC_DA9052 96 help 97 Say yes here to enable the GPIO driver for the DA9052 chip. 98 99config GPIO_DA9055 100 tristate "Dialog Semiconductor DA9055 GPIO" 101 depends on MFD_DA9055 102 help 103 Say yes here to enable the GPIO driver for the DA9055 chip. 104 105 The Dialog DA9055 PMIC chip has 3 GPIO pins that can be 106 be controller by this driver. 107 108 If driver is built as a module it will be called gpio-da9055. 109 110config GPIO_MAX730X 111 tristate 112 113comment "Memory mapped GPIO drivers:" 114 115config GPIO_CLPS711X 116 tristate "CLPS711X GPIO support" 117 depends on ARCH_CLPS711X || COMPILE_TEST 118 select GPIO_GENERIC 119 help 120 Say yes here to support GPIO on CLPS711X SoCs. 121 122config GPIO_DAVINCI 123 bool "TI Davinci/Keystone GPIO support" 124 default y if ARCH_DAVINCI 125 depends on ARM && (ARCH_DAVINCI || ARCH_KEYSTONE) 126 help 127 Say yes here to enable GPIO support for TI Davinci/Keystone SoCs. 128 129config GPIO_GENERIC_PLATFORM 130 tristate "Generic memory-mapped GPIO controller support (MMIO platform device)" 131 select GPIO_GENERIC 132 help 133 Say yes here to support basic platform_device memory-mapped GPIO controllers. 134 135config GPIO_DWAPB 136 tristate "Synopsys DesignWare APB GPIO driver" 137 select GPIO_GENERIC 138 select GENERIC_IRQ_CHIP 139 depends on OF_GPIO 140 help 141 Say Y or M here to build support for the Synopsys DesignWare APB 142 GPIO block. 143 144config GPIO_IT8761E 145 tristate "IT8761E GPIO support" 146 depends on X86 # unconditional access to IO space. 147 help 148 Say yes here to support GPIO functionality of IT8761E super I/O chip. 149 150config GPIO_EM 151 tristate "Emma Mobile GPIO" 152 depends on ARM && OF_GPIO 153 help 154 Say yes here to support GPIO on Renesas Emma Mobile SoCs. 155 156config GPIO_EP93XX 157 def_bool y 158 depends on ARCH_EP93XX 159 select GPIO_GENERIC 160 161config GPIO_ZEVIO 162 bool "LSI ZEVIO SoC memory mapped GPIOs" 163 depends on ARM && OF_GPIO 164 help 165 Say yes here to support the GPIO controller in LSI ZEVIO SoCs. 166 167config GPIO_MM_LANTIQ 168 bool "Lantiq Memory mapped GPIOs" 169 depends on LANTIQ && SOC_XWAY 170 help 171 This enables support for memory mapped GPIOs on the External Bus Unit 172 (EBU) found on Lantiq SoCs. The gpios are output only as they are 173 created by attaching a 16bit latch to the bus. 174 175config GPIO_F7188X 176 tristate "F71882FG and F71889F GPIO support" 177 depends on X86 178 help 179 This option enables support for GPIOs found on Fintek Super-I/O 180 chips F71882FG and F71889F. 181 182 To compile this driver as a module, choose M here: the module will 183 be called f7188x-gpio. 184 185config GPIO_MOXART 186 bool "MOXART GPIO support" 187 depends on ARCH_MOXART 188 help 189 Select this option to enable GPIO driver for 190 MOXA ART SoC devices. 191 192config GPIO_MPC5200 193 def_bool y 194 depends on PPC_MPC52xx 195 196config GPIO_MPC8XXX 197 bool "MPC512x/MPC8xxx GPIO support" 198 depends on PPC_MPC512x || PPC_MPC831x || PPC_MPC834x || PPC_MPC837x || \ 199 FSL_SOC_BOOKE || PPC_86xx 200 help 201 Say Y here if you're going to use hardware that connects to the 202 MPC512x/831x/834x/837x/8572/8610 GPIOs. 203 204config GPIO_MSM_V1 205 tristate "Qualcomm MSM GPIO v1" 206 depends on GPIOLIB && ARCH_MSM && (ARCH_MSM7X00A || ARCH_MSM7X30 || ARCH_QSD8X50) 207 help 208 Say yes here to support the GPIO interface on ARM v6 based 209 Qualcomm MSM chips. Most of the pins on the MSM can be 210 selected for GPIO, and are controlled by this driver. 211 212config GPIO_MSM_V2 213 tristate "Qualcomm MSM GPIO v2" 214 depends on GPIOLIB && OF && ARCH_QCOM 215 help 216 Say yes here to support the GPIO interface on ARM v7 based 217 Qualcomm MSM chips. Most of the pins on the MSM can be 218 selected for GPIO, and are controlled by this driver. 219 220config GPIO_MVEBU 221 def_bool y 222 depends on PLAT_ORION 223 depends on OF 224 select GPIO_GENERIC 225 select GENERIC_IRQ_CHIP 226 227config GPIO_MXC 228 def_bool y 229 depends on ARCH_MXC 230 select GPIO_GENERIC 231 select GENERIC_IRQ_CHIP 232 233config GPIO_MXS 234 def_bool y 235 depends on ARCH_MXS 236 select GPIO_GENERIC 237 select GENERIC_IRQ_CHIP 238 239config GPIO_OCTEON 240 tristate "Cavium OCTEON GPIO" 241 depends on GPIOLIB && CAVIUM_OCTEON_SOC 242 default y 243 help 244 Say yes here to support the on-chip GPIO lines on the OCTEON 245 family of SOCs. 246 247config GPIO_OMAP 248 bool "TI OMAP GPIO support" if COMPILE_TEST && !ARCH_OMAP2PLUS 249 default y if ARCH_OMAP 250 depends on ARM 251 select GENERIC_IRQ_CHIP 252 select GPIOLIB_IRQCHIP 253 help 254 Say yes here to enable GPIO support for TI OMAP SoCs. 255 256config GPIO_PL061 257 bool "PrimeCell PL061 GPIO support" 258 depends on ARM_AMBA 259 select IRQ_DOMAIN 260 select GPIOLIB_IRQCHIP 261 help 262 Say yes here to support the PrimeCell PL061 GPIO device 263 264config GPIO_PXA 265 bool "PXA GPIO support" 266 depends on ARCH_PXA || ARCH_MMP 267 help 268 Say yes here to support the PXA GPIO device 269 270config GPIO_RCAR 271 tristate "Renesas R-Car GPIO" 272 depends on ARM && (ARCH_SHMOBILE || COMPILE_TEST) 273 help 274 Say yes here to support GPIO on Renesas R-Car SoCs. 275 276config GPIO_SAMSUNG 277 bool 278 depends on PLAT_SAMSUNG 279 help 280 Legacy GPIO support. Use only for platforms without support for 281 pinctrl. 282 283config GPIO_SCH311X 284 tristate "SMSC SCH311x SuperI/O GPIO" 285 help 286 Driver to enable the GPIOs found on SMSC SMSC SCH3112, SCH3114 and 287 SCH3116 "Super I/O" chipsets. 288 289 To compile this driver as a module, choose M here: the module will 290 be called gpio-sch311x. 291 292config GPIO_SPEAR_SPICS 293 bool "ST SPEAr13xx SPI Chip Select as GPIO support" 294 depends on PLAT_SPEAR 295 select GENERIC_IRQ_CHIP 296 help 297 Say yes here to support ST SPEAr SPI Chip Select as GPIO device 298 299config GPIO_STA2X11 300 bool "STA2x11/ConneXt GPIO support" 301 depends on MFD_STA2X11 302 select GENERIC_IRQ_CHIP 303 help 304 Say yes here to support the STA2x11/ConneXt GPIO device. 305 The GPIO module has 128 GPIO pins with alternate functions. 306 307config GPIO_SYSCON 308 tristate "GPIO based on SYSCON" 309 depends on MFD_SYSCON && OF 310 help 311 Say yes here to support GPIO functionality though SYSCON driver. 312 313config GPIO_TS5500 314 tristate "TS-5500 DIO blocks and compatibles" 315 depends on TS5500 || COMPILE_TEST 316 help 317 This driver supports Digital I/O exposed by pin blocks found on some 318 Technologic Systems platforms. It includes, but is not limited to, 3 319 blocks of the TS-5500: DIO1, DIO2 and the LCD port, and the TS-5600 320 LCD port. 321 322config GPIO_TZ1090 323 bool "Toumaz Xenif TZ1090 GPIO support" 324 depends on SOC_TZ1090 325 select GENERIC_IRQ_CHIP 326 default y 327 help 328 Say yes here to support Toumaz Xenif TZ1090 GPIOs. 329 330config GPIO_TZ1090_PDC 331 bool "Toumaz Xenif TZ1090 PDC GPIO support" 332 depends on SOC_TZ1090 333 default y 334 help 335 Say yes here to support Toumaz Xenif TZ1090 PDC GPIOs. 336 337config GPIO_XILINX 338 bool "Xilinx GPIO support" 339 depends on PPC_OF || MICROBLAZE || ARCH_ZYNQ 340 help 341 Say yes here to support the Xilinx FPGA GPIO device 342 343config GPIO_XTENSA 344 bool "Xtensa GPIO32 support" 345 depends on XTENSA 346 depends on HAVE_XTENSA_GPIO32 347 depends on !SMP 348 help 349 Say yes here to support the Xtensa internal GPIO32 IMPWIRE (input) 350 and EXPSTATE (output) ports 351 352config GPIO_VR41XX 353 tristate "NEC VR4100 series General-purpose I/O Uint support" 354 depends on CPU_VR41XX 355 help 356 Say yes here to support the NEC VR4100 series General-purpose I/O Uint 357 358config GPIO_SCH 359 tristate "Intel SCH/TunnelCreek/Centerton GPIO" 360 depends on PCI && X86 361 select MFD_CORE 362 select LPC_SCH 363 help 364 Say yes here to support GPIO interface on Intel Poulsbo SCH, 365 Intel Tunnel Creek processor or Intel Centerton processor. 366 The Intel SCH contains a total of 14 GPIO pins. Ten GPIOs are 367 powered by the core power rail and are turned off during sleep 368 modes (S3 and higher). The remaining four GPIOs are powered by 369 the Intel SCH suspend power supply. These GPIOs remain 370 active during S3. The suspend powered GPIOs can be used to wake the 371 system from the Suspend-to-RAM state. 372 The Intel Tunnel Creek processor has 5 GPIOs powered by the 373 core power rail and 9 from suspend power supply. 374 The Intel Centerton processor has a total of 30 GPIO pins. 375 Twenty-one are powered by the core power rail and 9 from the 376 suspend power supply. 377 378config GPIO_ICH 379 tristate "Intel ICH GPIO" 380 depends on PCI && X86 381 select MFD_CORE 382 select LPC_ICH 383 help 384 Say yes here to support the GPIO functionality of a number of Intel 385 ICH-based chipsets. Currently supported devices: ICH6, ICH7, ICH8 386 ICH9, ICH10, Series 5/3400 (eg Ibex Peak), Series 6/C200 (eg 387 Cougar Point), NM10 (Tiger Point), and 3100 (Whitmore Lake). 388 389 If unsure, say N. 390 391config GPIO_IOP 392 tristate "Intel IOP GPIO" 393 depends on ARM && (ARCH_IOP32X || ARCH_IOP33X) 394 help 395 Say yes here to support the GPIO functionality of a number of Intel 396 IOP32X or IOP33X. 397 398 If unsure, say N. 399 400config GPIO_VX855 401 tristate "VIA VX855/VX875 GPIO" 402 depends on PCI 403 select MFD_CORE 404 select MFD_VX855 405 help 406 Support access to the VX855/VX875 GPIO lines through the gpio library. 407 408 This driver provides common support for accessing the device, 409 additional drivers must be enabled in order to use the 410 functionality of the device. 411 412config GPIO_GE_FPGA 413 bool "GE FPGA based GPIO" 414 depends on GE_FPGA 415 help 416 Support for common GPIO functionality provided on some GE Single Board 417 Computers. 418 419 This driver provides basic support (configure as input or output, read 420 and write pin state) for GPIO implemented in a number of GE single 421 board computers. 422 423config GPIO_LYNXPOINT 424 tristate "Intel Lynxpoint GPIO support" 425 depends on ACPI && X86 426 select IRQ_DOMAIN 427 help 428 driver for GPIO functionality on Intel Lynxpoint PCH chipset 429 Requires ACPI device enumeration code to set up a platform device. 430 431config GPIO_GRGPIO 432 tristate "Aeroflex Gaisler GRGPIO support" 433 depends on OF 434 select GPIO_GENERIC 435 select IRQ_DOMAIN 436 help 437 Select this to support Aeroflex Gaisler GRGPIO cores from the GRLIB 438 VHDL IP core library. 439 440config GPIO_TB10X 441 bool 442 select GENERIC_IRQ_CHIP 443 select OF_GPIO 444 445comment "I2C GPIO expanders:" 446 447config GPIO_ARIZONA 448 tristate "Wolfson Microelectronics Arizona class devices" 449 depends on MFD_ARIZONA 450 help 451 Support for GPIOs on Wolfson Arizona class devices. 452 453config GPIO_LP3943 454 tristate "TI/National Semiconductor LP3943 GPIO expander" 455 depends on MFD_LP3943 456 help 457 GPIO driver for LP3943 MFD. 458 LP3943 can be used as a GPIO expander which provides up to 16 GPIOs. 459 Open drain outputs are required for this usage. 460 461config GPIO_MAX7300 462 tristate "Maxim MAX7300 GPIO expander" 463 depends on I2C 464 select GPIO_MAX730X 465 help 466 GPIO driver for Maxim MAX7300 I2C-based GPIO expander. 467 468config GPIO_MAX732X 469 tristate "MAX7319, MAX7320-7327 I2C Port Expanders" 470 depends on I2C 471 help 472 Say yes here to support the MAX7319, MAX7320-7327 series of I2C 473 Port Expanders. Each IO port on these chips has a fixed role of 474 Input (designated by 'I'), Push-Pull Output ('O'), or Open-Drain 475 Input and Output (designed by 'P'). The combinations are listed 476 below: 477 478 8 bits: max7319 (8I), max7320 (8O), max7321 (8P), 479 max7322 (4I4O), max7323 (4P4O) 480 481 16 bits: max7324 (8I8O), max7325 (8P8O), 482 max7326 (4I12O), max7327 (4P12O) 483 484 Board setup code must specify the model to use, and the start 485 number for these GPIOs. 486 487config GPIO_MAX732X_IRQ 488 bool "Interrupt controller support for MAX732x" 489 depends on GPIO_MAX732X=y 490 help 491 Say yes here to enable the max732x to be used as an interrupt 492 controller. It requires the driver to be built in the kernel. 493 494config GPIO_MC9S08DZ60 495 bool "MX35 3DS BOARD MC9S08DZ60 GPIO functions" 496 depends on I2C=y && MACH_MX35_3DS 497 help 498 Select this to enable the MC9S08DZ60 GPIO driver 499 500config GPIO_PCA953X 501 tristate "PCA95[357]x, PCA9698, TCA64xx, and MAX7310 I/O ports" 502 depends on I2C 503 help 504 Say yes here to provide access to several register-oriented 505 SMBus I/O expanders, made mostly by NXP or TI. Compatible 506 models include: 507 508 4 bits: pca9536, pca9537 509 510 8 bits: max7310, max7315, pca6107, pca9534, pca9538, pca9554, 511 pca9556, pca9557, pca9574, tca6408, xra1202 512 513 16 bits: max7312, max7313, pca9535, pca9539, pca9555, pca9575, 514 tca6416 515 516 24 bits: tca6424 517 518 40 bits: pca9505, pca9698 519 520config GPIO_PCA953X_IRQ 521 bool "Interrupt controller support for PCA953x" 522 depends on GPIO_PCA953X=y 523 select GPIOLIB_IRQCHIP 524 help 525 Say yes here to enable the pca953x to be used as an interrupt 526 controller. It requires the driver to be built in the kernel. 527 528config GPIO_PCF857X 529 tristate "PCF857x, PCA{85,96}7x, and MAX732[89] I2C GPIO expanders" 530 depends on I2C 531 select IRQ_DOMAIN 532 help 533 Say yes here to provide access to most "quasi-bidirectional" I2C 534 GPIO expanders used for additional digital outputs or inputs. 535 Most of these parts are from NXP, though TI is a second source for 536 some of them. Compatible models include: 537 538 8 bits: pcf8574, pcf8574a, pca8574, pca8574a, 539 pca9670, pca9672, pca9674, pca9674a, 540 max7328, max7329 541 542 16 bits: pcf8575, pcf8575c, pca8575, 543 pca9671, pca9673, pca9675 544 545 Your board setup code will need to declare the expanders in 546 use, and assign numbers to the GPIOs they expose. Those GPIOs 547 can then be used from drivers and other kernel code, just like 548 other GPIOs, but only accessible from task contexts. 549 550 This driver provides an in-kernel interface to those GPIOs using 551 platform-neutral GPIO calls. 552 553config GPIO_RC5T583 554 bool "RICOH RC5T583 GPIO" 555 depends on MFD_RC5T583 556 help 557 Select this option to enable GPIO driver for the Ricoh RC5T583 558 chip family. 559 This driver provides the support for driving/reading the gpio pins 560 of RC5T583 device through standard gpio library. 561 562config GPIO_SX150X 563 bool "Semtech SX150x I2C GPIO expander" 564 depends on I2C=y 565 default n 566 help 567 Say yes here to provide support for Semtech SX150-series I2C 568 GPIO expanders. Compatible models include: 569 570 8 bits: sx1508q 571 16 bits: sx1509q 572 573config GPIO_STMPE 574 bool "STMPE GPIOs" 575 depends on MFD_STMPE 576 help 577 This enables support for the GPIOs found on the STMPE I/O 578 Expanders. 579 580config GPIO_STP_XWAY 581 bool "XWAY STP GPIOs" 582 depends on SOC_XWAY 583 help 584 This enables support for the Serial To Parallel (STP) unit found on 585 XWAY SoC. The STP allows the SoC to drive a shift registers cascade, 586 that can be up to 24 bit. This peripheral is aimed at driving leds. 587 Some of the gpios/leds can be auto updated by the soc with dsl and 588 phy status. 589 590config GPIO_TC3589X 591 bool "TC3589X GPIOs" 592 depends on MFD_TC3589X 593 select GPIOLIB_IRQCHIP 594 help 595 This enables support for the GPIOs found on the TC3589X 596 I/O Expander. 597 598config GPIO_TPS65912 599 tristate "TI TPS65912 GPIO" 600 depends on (MFD_TPS65912_I2C || MFD_TPS65912_SPI) 601 help 602 This driver supports TPS65912 gpio chip 603 604config GPIO_TWL4030 605 tristate "TWL4030, TWL5030, and TPS659x0 GPIOs" 606 depends on TWL4030_CORE 607 help 608 Say yes here to access the GPIO signals of various multi-function 609 power management chips from Texas Instruments. 610 611config GPIO_TWL6040 612 tristate "TWL6040 GPO" 613 depends on TWL6040_CORE 614 help 615 Say yes here to access the GPO signals of twl6040 616 audio chip from Texas Instruments. 617 618config GPIO_WM831X 619 tristate "WM831x GPIOs" 620 depends on MFD_WM831X 621 help 622 Say yes here to access the GPIO signals of WM831x power management 623 chips from Wolfson Microelectronics. 624 625config GPIO_WM8350 626 tristate "WM8350 GPIOs" 627 depends on MFD_WM8350 628 help 629 Say yes here to access the GPIO signals of WM8350 power management 630 chips from Wolfson Microelectronics. 631 632config GPIO_WM8994 633 tristate "WM8994 GPIOs" 634 depends on MFD_WM8994 635 help 636 Say yes here to access the GPIO signals of WM8994 audio hub 637 CODECs from Wolfson Microelectronics. 638 639config GPIO_ADP5520 640 tristate "GPIO Support for ADP5520 PMIC" 641 depends on PMIC_ADP5520 642 help 643 This option enables support for on-chip GPIO found 644 on Analog Devices ADP5520 PMICs. 645 646config GPIO_ADP5588 647 tristate "ADP5588 I2C GPIO expander" 648 depends on I2C 649 help 650 This option enables support for 18 GPIOs found 651 on Analog Devices ADP5588 GPIO Expanders. 652 653config GPIO_ADP5588_IRQ 654 bool "Interrupt controller support for ADP5588" 655 depends on GPIO_ADP5588=y 656 help 657 Say yes here to enable the adp5588 to be used as an interrupt 658 controller. It requires the driver to be built in the kernel. 659 660config GPIO_ADNP 661 tristate "Avionic Design N-bit GPIO expander" 662 depends on I2C && OF_GPIO 663 help 664 This option enables support for N GPIOs found on Avionic Design 665 I2C GPIO expanders. The register space will be extended by powers 666 of two, so the controller will need to accommodate for that. For 667 example: if a controller provides 48 pins, 6 registers will be 668 enough to represent all pins, but the driver will assume a 669 register layout for 64 pins (8 registers). 670 671comment "PCI GPIO expanders:" 672 673config GPIO_CS5535 674 tristate "AMD CS5535/CS5536 GPIO support" 675 depends on MFD_CS5535 676 help 677 The AMD CS5535 and CS5536 southbridges support 28 GPIO pins that 678 can be used for quite a number of things. The CS5535/6 is found on 679 AMD Geode and Lemote Yeeloong devices. 680 681 If unsure, say N. 682 683config GPIO_BT8XX 684 tristate "BT8XX GPIO abuser" 685 depends on PCI && VIDEO_BT848=n 686 help 687 The BT8xx frame grabber chip has 24 GPIO pins that can be abused 688 as a cheap PCI GPIO card. 689 690 This chip can be found on Miro, Hauppauge and STB TV-cards. 691 692 The card needs to be physically altered for using it as a 693 GPIO card. For more information on how to build a GPIO card 694 from a BT8xx TV card, see the documentation file at 695 Documentation/bt8xxgpio.txt 696 697 If unsure, say N. 698 699config GPIO_AMD8111 700 tristate "AMD 8111 GPIO driver" 701 depends on PCI 702 help 703 The AMD 8111 south bridge contains 32 GPIO pins which can be used. 704 705 Note, that usually system firmware/ACPI handles GPIO pins on their 706 own and users might easily break their systems with uncarefull usage 707 of this driver! 708 709 If unsure, say N 710 711config GPIO_INTEL_MID 712 bool "Intel Mid GPIO support" 713 depends on PCI && X86 714 select GPIOLIB_IRQCHIP 715 help 716 Say Y here to support Intel Mid GPIO. 717 718config GPIO_PCH 719 tristate "Intel EG20T PCH/LAPIS Semiconductor IOH(ML7223/ML7831) GPIO" 720 depends on PCI && (X86_32 || COMPILE_TEST) 721 select GENERIC_IRQ_CHIP 722 help 723 This driver is for PCH(Platform controller Hub) GPIO of Intel Topcliff 724 which is an IOH(Input/Output Hub) for x86 embedded processor. 725 This driver can access PCH GPIO device. 726 727 This driver also can be used for LAPIS Semiconductor IOH(Input/ 728 Output Hub), ML7223 and ML7831. 729 ML7223 IOH is for MP(Media Phone) use. 730 ML7831 IOH is for general purpose use. 731 ML7223/ML7831 is companion chip for Intel Atom E6xx series. 732 ML7223/ML7831 is completely compatible for Intel EG20T PCH. 733 734config GPIO_ML_IOH 735 tristate "OKI SEMICONDUCTOR ML7213 IOH GPIO support" 736 depends on PCI 737 select GENERIC_IRQ_CHIP 738 help 739 ML7213 is companion chip for Intel Atom E6xx series. 740 This driver can be used for OKI SEMICONDUCTOR ML7213 IOH(Input/Output 741 Hub) which is for IVI(In-Vehicle Infotainment) use. 742 This driver can access the IOH's GPIO device. 743 744config GPIO_SODAVILLE 745 bool "Intel Sodaville GPIO support" 746 depends on X86 && PCI && OF 747 select GPIO_GENERIC 748 select GENERIC_IRQ_CHIP 749 help 750 Say Y here to support Intel Sodaville GPIO. 751 752config GPIO_TIMBERDALE 753 bool "Support for timberdale GPIO IP" 754 depends on MFD_TIMBERDALE 755 ---help--- 756 Add support for the GPIO IP in the timberdale FPGA. 757 758config GPIO_RDC321X 759 tristate "RDC R-321x GPIO support" 760 depends on PCI 761 select MFD_CORE 762 select MFD_RDC321X 763 help 764 Support for the RDC R321x SoC GPIOs over southbridge 765 PCI configuration space. 766 767comment "SPI GPIO expanders:" 768 769config GPIO_MAX7301 770 tristate "Maxim MAX7301 GPIO expander" 771 depends on SPI_MASTER 772 select GPIO_MAX730X 773 help 774 GPIO driver for Maxim MAX7301 SPI-based GPIO expander. 775 776config GPIO_MCP23S08 777 tristate "Microchip MCP23xxx I/O expander" 778 depends on OF_GPIO 779 depends on (SPI_MASTER && !I2C) || I2C 780 help 781 SPI/I2C driver for Microchip MCP23S08/MCP23S17/MCP23008/MCP23017 782 I/O expanders. 783 This provides a GPIO interface supporting inputs and outputs. 784 The I2C versions of the chips can be used as interrupt-controller. 785 786config GPIO_MC33880 787 tristate "Freescale MC33880 high-side/low-side switch" 788 depends on SPI_MASTER 789 help 790 SPI driver for Freescale MC33880 high-side/low-side switch. 791 This provides GPIO interface supporting inputs and outputs. 792 793config GPIO_74X164 794 tristate "74x164 serial-in/parallel-out 8-bits shift register" 795 depends on SPI_MASTER && OF 796 help 797 Driver for 74x164 compatible serial-in/parallel-out 8-outputs 798 shift registers. This driver can be used to provide access 799 to more gpio outputs. 800 801comment "AC97 GPIO expanders:" 802 803config GPIO_UCB1400 804 tristate "Philips UCB1400 GPIO" 805 depends on UCB1400_CORE 806 help 807 This enables support for the Philips UCB1400 GPIO pins. 808 The UCB1400 is an AC97 audio codec. 809 810comment "LPC GPIO expanders:" 811 812config GPIO_KEMPLD 813 tristate "Kontron ETX / COMexpress GPIO" 814 depends on MFD_KEMPLD 815 help 816 This enables support for the PLD GPIO interface on some Kontron ETX 817 and COMexpress (ETXexpress) modules. 818 819 This driver can also be built as a module. If so, the module will be 820 called gpio-kempld. 821 822comment "MODULbus GPIO expanders:" 823 824config GPIO_JANZ_TTL 825 tristate "Janz VMOD-TTL Digital IO Module" 826 depends on MFD_JANZ_CMODIO 827 help 828 This enables support for the Janz VMOD-TTL Digital IO module. 829 This driver provides support for driving the pins in output 830 mode only. Input mode is not supported. 831 832config GPIO_PALMAS 833 bool "TI PALMAS series PMICs GPIO" 834 depends on MFD_PALMAS 835 help 836 Select this option to enable GPIO driver for the TI PALMAS 837 series chip family. 838 839config GPIO_TPS6586X 840 bool "TPS6586X GPIO" 841 depends on MFD_TPS6586X 842 help 843 Select this option to enable GPIO driver for the TPS6586X 844 chip family. 845 846config GPIO_TPS65910 847 bool "TPS65910 GPIO" 848 depends on MFD_TPS65910 849 help 850 Select this option to enable GPIO driver for the TPS65910 851 chip family. 852 853config GPIO_MSIC 854 bool "Intel MSIC mixed signal gpio support" 855 depends on MFD_INTEL_MSIC 856 help 857 Enable support for GPIO on intel MSIC controllers found in 858 intel MID devices 859 860config GPIO_BCM_KONA 861 bool "Broadcom Kona GPIO" 862 depends on OF_GPIO 863 help 864 Turn on GPIO support for Broadcom "Kona" chips. 865 866comment "USB GPIO expanders:" 867 868config GPIO_VIPERBOARD 869 tristate "Viperboard GPIO a & b support" 870 depends on MFD_VIPERBOARD && USB 871 help 872 Say yes here to access the GPIO signals of Nano River 873 Technologies Viperboard. There are two GPIO chips on the 874 board: gpioa and gpiob. 875 See viperboard API specification and Nano 876 River Tech's viperboard.h for detailed meaning 877 of the module parameters. 878 879endif 880