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_ZYNQ 344 tristate "Xilinx Zynq GPIO support" 345 depends on ARCH_ZYNQ 346 select GPIOLIB_IRQCHIP 347 help 348 Say yes here to support Xilinx Zynq GPIO controller. 349 350config GPIO_XTENSA 351 bool "Xtensa GPIO32 support" 352 depends on XTENSA 353 depends on HAVE_XTENSA_GPIO32 354 depends on !SMP 355 help 356 Say yes here to support the Xtensa internal GPIO32 IMPWIRE (input) 357 and EXPSTATE (output) ports 358 359config GPIO_VR41XX 360 tristate "NEC VR4100 series General-purpose I/O Uint support" 361 depends on CPU_VR41XX 362 help 363 Say yes here to support the NEC VR4100 series General-purpose I/O Uint 364 365config GPIO_SCH 366 tristate "Intel SCH/TunnelCreek/Centerton GPIO" 367 depends on PCI && X86 368 select MFD_CORE 369 select LPC_SCH 370 help 371 Say yes here to support GPIO interface on Intel Poulsbo SCH, 372 Intel Tunnel Creek processor or Intel Centerton processor. 373 The Intel SCH contains a total of 14 GPIO pins. Ten GPIOs are 374 powered by the core power rail and are turned off during sleep 375 modes (S3 and higher). The remaining four GPIOs are powered by 376 the Intel SCH suspend power supply. These GPIOs remain 377 active during S3. The suspend powered GPIOs can be used to wake the 378 system from the Suspend-to-RAM state. 379 The Intel Tunnel Creek processor has 5 GPIOs powered by the 380 core power rail and 9 from suspend power supply. 381 The Intel Centerton processor has a total of 30 GPIO pins. 382 Twenty-one are powered by the core power rail and 9 from the 383 suspend power supply. 384 385config GPIO_ICH 386 tristate "Intel ICH GPIO" 387 depends on PCI && X86 388 select MFD_CORE 389 select LPC_ICH 390 help 391 Say yes here to support the GPIO functionality of a number of Intel 392 ICH-based chipsets. Currently supported devices: ICH6, ICH7, ICH8 393 ICH9, ICH10, Series 5/3400 (eg Ibex Peak), Series 6/C200 (eg 394 Cougar Point), NM10 (Tiger Point), and 3100 (Whitmore Lake). 395 396 If unsure, say N. 397 398config GPIO_IOP 399 tristate "Intel IOP GPIO" 400 depends on ARM && (ARCH_IOP32X || ARCH_IOP33X) 401 help 402 Say yes here to support the GPIO functionality of a number of Intel 403 IOP32X or IOP33X. 404 405 If unsure, say N. 406 407config GPIO_VX855 408 tristate "VIA VX855/VX875 GPIO" 409 depends on PCI 410 select MFD_CORE 411 select MFD_VX855 412 help 413 Support access to the VX855/VX875 GPIO lines through the gpio library. 414 415 This driver provides common support for accessing the device, 416 additional drivers must be enabled in order to use the 417 functionality of the device. 418 419config GPIO_GE_FPGA 420 bool "GE FPGA based GPIO" 421 depends on GE_FPGA 422 help 423 Support for common GPIO functionality provided on some GE Single Board 424 Computers. 425 426 This driver provides basic support (configure as input or output, read 427 and write pin state) for GPIO implemented in a number of GE single 428 board computers. 429 430config GPIO_LYNXPOINT 431 tristate "Intel Lynxpoint GPIO support" 432 depends on ACPI && X86 433 select GPIOLIB_IRQCHIP 434 help 435 driver for GPIO functionality on Intel Lynxpoint PCH chipset 436 Requires ACPI device enumeration code to set up a platform device. 437 438config GPIO_GRGPIO 439 tristate "Aeroflex Gaisler GRGPIO support" 440 depends on OF 441 select GPIO_GENERIC 442 select IRQ_DOMAIN 443 help 444 Select this to support Aeroflex Gaisler GRGPIO cores from the GRLIB 445 VHDL IP core library. 446 447config GPIO_TB10X 448 bool 449 select GENERIC_IRQ_CHIP 450 select OF_GPIO 451 452comment "I2C GPIO expanders:" 453 454config GPIO_ARIZONA 455 tristate "Wolfson Microelectronics Arizona class devices" 456 depends on MFD_ARIZONA 457 help 458 Support for GPIOs on Wolfson Arizona class devices. 459 460config GPIO_LP3943 461 tristate "TI/National Semiconductor LP3943 GPIO expander" 462 depends on MFD_LP3943 463 help 464 GPIO driver for LP3943 MFD. 465 LP3943 can be used as a GPIO expander which provides up to 16 GPIOs. 466 Open drain outputs are required for this usage. 467 468config GPIO_MAX7300 469 tristate "Maxim MAX7300 GPIO expander" 470 depends on I2C 471 select GPIO_MAX730X 472 help 473 GPIO driver for Maxim MAX7300 I2C-based GPIO expander. 474 475config GPIO_MAX732X 476 tristate "MAX7319, MAX7320-7327 I2C Port Expanders" 477 depends on I2C 478 help 479 Say yes here to support the MAX7319, MAX7320-7327 series of I2C 480 Port Expanders. Each IO port on these chips has a fixed role of 481 Input (designated by 'I'), Push-Pull Output ('O'), or Open-Drain 482 Input and Output (designed by 'P'). The combinations are listed 483 below: 484 485 8 bits: max7319 (8I), max7320 (8O), max7321 (8P), 486 max7322 (4I4O), max7323 (4P4O) 487 488 16 bits: max7324 (8I8O), max7325 (8P8O), 489 max7326 (4I12O), max7327 (4P12O) 490 491 Board setup code must specify the model to use, and the start 492 number for these GPIOs. 493 494config GPIO_MAX732X_IRQ 495 bool "Interrupt controller support for MAX732x" 496 depends on GPIO_MAX732X=y 497 help 498 Say yes here to enable the max732x to be used as an interrupt 499 controller. It requires the driver to be built in the kernel. 500 501config GPIO_MC9S08DZ60 502 bool "MX35 3DS BOARD MC9S08DZ60 GPIO functions" 503 depends on I2C=y && MACH_MX35_3DS 504 help 505 Select this to enable the MC9S08DZ60 GPIO driver 506 507config GPIO_PCA953X 508 tristate "PCA95[357]x, PCA9698, TCA64xx, and MAX7310 I/O ports" 509 depends on I2C 510 help 511 Say yes here to provide access to several register-oriented 512 SMBus I/O expanders, made mostly by NXP or TI. Compatible 513 models include: 514 515 4 bits: pca9536, pca9537 516 517 8 bits: max7310, max7315, pca6107, pca9534, pca9538, pca9554, 518 pca9556, pca9557, pca9574, tca6408, xra1202 519 520 16 bits: max7312, max7313, pca9535, pca9539, pca9555, pca9575, 521 tca6416 522 523 24 bits: tca6424 524 525 40 bits: pca9505, pca9698 526 527config GPIO_PCA953X_IRQ 528 bool "Interrupt controller support for PCA953x" 529 depends on GPIO_PCA953X=y 530 select GPIOLIB_IRQCHIP 531 help 532 Say yes here to enable the pca953x to be used as an interrupt 533 controller. It requires the driver to be built in the kernel. 534 535config GPIO_PCF857X 536 tristate "PCF857x, PCA{85,96}7x, and MAX732[89] I2C GPIO expanders" 537 depends on I2C 538 select IRQ_DOMAIN 539 help 540 Say yes here to provide access to most "quasi-bidirectional" I2C 541 GPIO expanders used for additional digital outputs or inputs. 542 Most of these parts are from NXP, though TI is a second source for 543 some of them. Compatible models include: 544 545 8 bits: pcf8574, pcf8574a, pca8574, pca8574a, 546 pca9670, pca9672, pca9674, pca9674a, 547 max7328, max7329 548 549 16 bits: pcf8575, pcf8575c, pca8575, 550 pca9671, pca9673, pca9675 551 552 Your board setup code will need to declare the expanders in 553 use, and assign numbers to the GPIOs they expose. Those GPIOs 554 can then be used from drivers and other kernel code, just like 555 other GPIOs, but only accessible from task contexts. 556 557 This driver provides an in-kernel interface to those GPIOs using 558 platform-neutral GPIO calls. 559 560config GPIO_RC5T583 561 bool "RICOH RC5T583 GPIO" 562 depends on MFD_RC5T583 563 help 564 Select this option to enable GPIO driver for the Ricoh RC5T583 565 chip family. 566 This driver provides the support for driving/reading the gpio pins 567 of RC5T583 device through standard gpio library. 568 569config GPIO_SX150X 570 bool "Semtech SX150x I2C GPIO expander" 571 depends on I2C=y 572 default n 573 help 574 Say yes here to provide support for Semtech SX150-series I2C 575 GPIO expanders. Compatible models include: 576 577 8 bits: sx1508q 578 16 bits: sx1509q 579 580config GPIO_STMPE 581 bool "STMPE GPIOs" 582 depends on MFD_STMPE 583 select GPIOLIB_IRQCHIP 584 help 585 This enables support for the GPIOs found on the STMPE I/O 586 Expanders. 587 588config GPIO_STP_XWAY 589 bool "XWAY STP GPIOs" 590 depends on SOC_XWAY 591 help 592 This enables support for the Serial To Parallel (STP) unit found on 593 XWAY SoC. The STP allows the SoC to drive a shift registers cascade, 594 that can be up to 24 bit. This peripheral is aimed at driving leds. 595 Some of the gpios/leds can be auto updated by the soc with dsl and 596 phy status. 597 598config GPIO_TC3589X 599 bool "TC3589X GPIOs" 600 depends on MFD_TC3589X 601 select GPIOLIB_IRQCHIP 602 help 603 This enables support for the GPIOs found on the TC3589X 604 I/O Expander. 605 606config GPIO_TPS65912 607 tristate "TI TPS65912 GPIO" 608 depends on (MFD_TPS65912_I2C || MFD_TPS65912_SPI) 609 help 610 This driver supports TPS65912 gpio chip 611 612config GPIO_TWL4030 613 tristate "TWL4030, TWL5030, and TPS659x0 GPIOs" 614 depends on TWL4030_CORE 615 help 616 Say yes here to access the GPIO signals of various multi-function 617 power management chips from Texas Instruments. 618 619config GPIO_TWL6040 620 tristate "TWL6040 GPO" 621 depends on TWL6040_CORE 622 help 623 Say yes here to access the GPO signals of twl6040 624 audio chip from Texas Instruments. 625 626config GPIO_WM831X 627 tristate "WM831x GPIOs" 628 depends on MFD_WM831X 629 help 630 Say yes here to access the GPIO signals of WM831x power management 631 chips from Wolfson Microelectronics. 632 633config GPIO_WM8350 634 tristate "WM8350 GPIOs" 635 depends on MFD_WM8350 636 help 637 Say yes here to access the GPIO signals of WM8350 power management 638 chips from Wolfson Microelectronics. 639 640config GPIO_WM8994 641 tristate "WM8994 GPIOs" 642 depends on MFD_WM8994 643 help 644 Say yes here to access the GPIO signals of WM8994 audio hub 645 CODECs from Wolfson Microelectronics. 646 647config GPIO_ADP5520 648 tristate "GPIO Support for ADP5520 PMIC" 649 depends on PMIC_ADP5520 650 help 651 This option enables support for on-chip GPIO found 652 on Analog Devices ADP5520 PMICs. 653 654config GPIO_ADP5588 655 tristate "ADP5588 I2C GPIO expander" 656 depends on I2C 657 help 658 This option enables support for 18 GPIOs found 659 on Analog Devices ADP5588 GPIO Expanders. 660 661config GPIO_ADP5588_IRQ 662 bool "Interrupt controller support for ADP5588" 663 depends on GPIO_ADP5588=y 664 help 665 Say yes here to enable the adp5588 to be used as an interrupt 666 controller. It requires the driver to be built in the kernel. 667 668config GPIO_ADNP 669 tristate "Avionic Design N-bit GPIO expander" 670 depends on I2C && OF_GPIO 671 help 672 This option enables support for N GPIOs found on Avionic Design 673 I2C GPIO expanders. The register space will be extended by powers 674 of two, so the controller will need to accommodate for that. For 675 example: if a controller provides 48 pins, 6 registers will be 676 enough to represent all pins, but the driver will assume a 677 register layout for 64 pins (8 registers). 678 679comment "PCI GPIO expanders:" 680 681config GPIO_CS5535 682 tristate "AMD CS5535/CS5536 GPIO support" 683 depends on MFD_CS5535 684 help 685 The AMD CS5535 and CS5536 southbridges support 28 GPIO pins that 686 can be used for quite a number of things. The CS5535/6 is found on 687 AMD Geode and Lemote Yeeloong devices. 688 689 If unsure, say N. 690 691config GPIO_BT8XX 692 tristate "BT8XX GPIO abuser" 693 depends on PCI && VIDEO_BT848=n 694 help 695 The BT8xx frame grabber chip has 24 GPIO pins that can be abused 696 as a cheap PCI GPIO card. 697 698 This chip can be found on Miro, Hauppauge and STB TV-cards. 699 700 The card needs to be physically altered for using it as a 701 GPIO card. For more information on how to build a GPIO card 702 from a BT8xx TV card, see the documentation file at 703 Documentation/bt8xxgpio.txt 704 705 If unsure, say N. 706 707config GPIO_AMD8111 708 tristate "AMD 8111 GPIO driver" 709 depends on PCI 710 help 711 The AMD 8111 south bridge contains 32 GPIO pins which can be used. 712 713 Note, that usually system firmware/ACPI handles GPIO pins on their 714 own and users might easily break their systems with uncarefull usage 715 of this driver! 716 717 If unsure, say N 718 719config GPIO_INTEL_MID 720 bool "Intel Mid GPIO support" 721 depends on PCI && X86 722 select GPIOLIB_IRQCHIP 723 help 724 Say Y here to support Intel Mid GPIO. 725 726config GPIO_PCH 727 tristate "Intel EG20T PCH/LAPIS Semiconductor IOH(ML7223/ML7831) GPIO" 728 depends on PCI && (X86_32 || COMPILE_TEST) 729 select GENERIC_IRQ_CHIP 730 help 731 This driver is for PCH(Platform controller Hub) GPIO of Intel Topcliff 732 which is an IOH(Input/Output Hub) for x86 embedded processor. 733 This driver can access PCH GPIO device. 734 735 This driver also can be used for LAPIS Semiconductor IOH(Input/ 736 Output Hub), ML7223 and ML7831. 737 ML7223 IOH is for MP(Media Phone) use. 738 ML7831 IOH is for general purpose use. 739 ML7223/ML7831 is companion chip for Intel Atom E6xx series. 740 ML7223/ML7831 is completely compatible for Intel EG20T PCH. 741 742config GPIO_ML_IOH 743 tristate "OKI SEMICONDUCTOR ML7213 IOH GPIO support" 744 depends on PCI 745 select GENERIC_IRQ_CHIP 746 help 747 ML7213 is companion chip for Intel Atom E6xx series. 748 This driver can be used for OKI SEMICONDUCTOR ML7213 IOH(Input/Output 749 Hub) which is for IVI(In-Vehicle Infotainment) use. 750 This driver can access the IOH's GPIO device. 751 752config GPIO_SODAVILLE 753 bool "Intel Sodaville GPIO support" 754 depends on X86 && PCI && OF 755 select GPIO_GENERIC 756 select GENERIC_IRQ_CHIP 757 help 758 Say Y here to support Intel Sodaville GPIO. 759 760config GPIO_TIMBERDALE 761 bool "Support for timberdale GPIO IP" 762 depends on MFD_TIMBERDALE 763 ---help--- 764 Add support for the GPIO IP in the timberdale FPGA. 765 766config GPIO_RDC321X 767 tristate "RDC R-321x GPIO support" 768 depends on PCI 769 select MFD_CORE 770 select MFD_RDC321X 771 help 772 Support for the RDC R321x SoC GPIOs over southbridge 773 PCI configuration space. 774 775comment "SPI GPIO expanders:" 776 777config GPIO_MAX7301 778 tristate "Maxim MAX7301 GPIO expander" 779 depends on SPI_MASTER 780 select GPIO_MAX730X 781 help 782 GPIO driver for Maxim MAX7301 SPI-based GPIO expander. 783 784config GPIO_MCP23S08 785 tristate "Microchip MCP23xxx I/O expander" 786 depends on OF_GPIO 787 depends on (SPI_MASTER && !I2C) || I2C 788 help 789 SPI/I2C driver for Microchip MCP23S08/MCP23S17/MCP23008/MCP23017 790 I/O expanders. 791 This provides a GPIO interface supporting inputs and outputs. 792 The I2C versions of the chips can be used as interrupt-controller. 793 794config GPIO_MC33880 795 tristate "Freescale MC33880 high-side/low-side switch" 796 depends on SPI_MASTER 797 help 798 SPI driver for Freescale MC33880 high-side/low-side switch. 799 This provides GPIO interface supporting inputs and outputs. 800 801config GPIO_74X164 802 tristate "74x164 serial-in/parallel-out 8-bits shift register" 803 depends on SPI_MASTER && OF 804 help 805 Driver for 74x164 compatible serial-in/parallel-out 8-outputs 806 shift registers. This driver can be used to provide access 807 to more gpio outputs. 808 809comment "AC97 GPIO expanders:" 810 811config GPIO_UCB1400 812 tristate "Philips UCB1400 GPIO" 813 depends on UCB1400_CORE 814 help 815 This enables support for the Philips UCB1400 GPIO pins. 816 The UCB1400 is an AC97 audio codec. 817 818comment "LPC GPIO expanders:" 819 820config GPIO_KEMPLD 821 tristate "Kontron ETX / COMexpress GPIO" 822 depends on MFD_KEMPLD 823 help 824 This enables support for the PLD GPIO interface on some Kontron ETX 825 and COMexpress (ETXexpress) modules. 826 827 This driver can also be built as a module. If so, the module will be 828 called gpio-kempld. 829 830comment "MODULbus GPIO expanders:" 831 832config GPIO_JANZ_TTL 833 tristate "Janz VMOD-TTL Digital IO Module" 834 depends on MFD_JANZ_CMODIO 835 help 836 This enables support for the Janz VMOD-TTL Digital IO module. 837 This driver provides support for driving the pins in output 838 mode only. Input mode is not supported. 839 840config GPIO_PALMAS 841 bool "TI PALMAS series PMICs GPIO" 842 depends on MFD_PALMAS 843 help 844 Select this option to enable GPIO driver for the TI PALMAS 845 series chip family. 846 847config GPIO_TPS6586X 848 bool "TPS6586X GPIO" 849 depends on MFD_TPS6586X 850 help 851 Select this option to enable GPIO driver for the TPS6586X 852 chip family. 853 854config GPIO_TPS65910 855 bool "TPS65910 GPIO" 856 depends on MFD_TPS65910 857 help 858 Select this option to enable GPIO driver for the TPS65910 859 chip family. 860 861config GPIO_MSIC 862 bool "Intel MSIC mixed signal gpio support" 863 depends on MFD_INTEL_MSIC 864 help 865 Enable support for GPIO on intel MSIC controllers found in 866 intel MID devices 867 868config GPIO_BCM_KONA 869 bool "Broadcom Kona GPIO" 870 depends on OF_GPIO 871 help 872 Turn on GPIO support for Broadcom "Kona" chips. 873 874comment "USB GPIO expanders:" 875 876config GPIO_VIPERBOARD 877 tristate "Viperboard GPIO a & b support" 878 depends on MFD_VIPERBOARD && USB 879 help 880 Say yes here to access the GPIO signals of Nano River 881 Technologies Viperboard. There are two GPIO chips on the 882 board: gpioa and gpiob. 883 See viperboard API specification and Nano 884 River Tech's viperboard.h for detailed meaning 885 of the module parameters. 886 887endif 888