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_74XX_MMIO 116 tristate "GPIO driver for 74xx-ICs with MMIO access" 117 depends on OF_GPIO 118 select GPIO_GENERIC 119 help 120 Say yes here to support GPIO functionality for 74xx-compatible ICs 121 with MMIO access. Compatible models include: 122 1 bit: 741G125 (Input), 741G74 (Output) 123 2 bits: 742G125 (Input), 7474 (Output) 124 4 bits: 74125 (Input), 74175 (Output) 125 6 bits: 74365 (Input), 74174 (Output) 126 8 bits: 74244 (Input), 74273 (Output) 127 16 bits: 741624 (Input), 7416374 (Output) 128 129config GPIO_CLPS711X 130 tristate "CLPS711X GPIO support" 131 depends on ARCH_CLPS711X || COMPILE_TEST 132 select GPIO_GENERIC 133 help 134 Say yes here to support GPIO on CLPS711X SoCs. 135 136config GPIO_DAVINCI 137 bool "TI Davinci/Keystone GPIO support" 138 default y if ARCH_DAVINCI 139 depends on ARM && (ARCH_DAVINCI || ARCH_KEYSTONE) 140 help 141 Say yes here to enable GPIO support for TI Davinci/Keystone SoCs. 142 143config GPIO_GENERIC_PLATFORM 144 tristate "Generic memory-mapped GPIO controller support (MMIO platform device)" 145 select GPIO_GENERIC 146 help 147 Say yes here to support basic platform_device memory-mapped GPIO controllers. 148 149config GPIO_DWAPB 150 tristate "Synopsys DesignWare APB GPIO driver" 151 depends on ARM 152 depends on OF_GPIO 153 select GPIO_GENERIC 154 select GENERIC_IRQ_CHIP 155 help 156 Say Y or M here to build support for the Synopsys DesignWare APB 157 GPIO block. 158 159config GPIO_IT8761E 160 tristate "IT8761E GPIO support" 161 depends on X86 # unconditional access to IO space. 162 help 163 Say yes here to support GPIO functionality of IT8761E super I/O chip. 164 165config GPIO_EM 166 tristate "Emma Mobile GPIO" 167 depends on ARM && OF_GPIO 168 help 169 Say yes here to support GPIO on Renesas Emma Mobile SoCs. 170 171config GPIO_EP93XX 172 def_bool y 173 depends on ARCH_EP93XX 174 select GPIO_GENERIC 175 176config GPIO_ZEVIO 177 bool "LSI ZEVIO SoC memory mapped GPIOs" 178 depends on ARM && OF_GPIO 179 help 180 Say yes here to support the GPIO controller in LSI ZEVIO SoCs. 181 182config GPIO_MM_LANTIQ 183 bool "Lantiq Memory mapped GPIOs" 184 depends on LANTIQ && SOC_XWAY 185 help 186 This enables support for memory mapped GPIOs on the External Bus Unit 187 (EBU) found on Lantiq SoCs. The gpios are output only as they are 188 created by attaching a 16bit latch to the bus. 189 190config GPIO_F7188X 191 tristate "F71882FG and F71889F GPIO support" 192 depends on X86 193 help 194 This option enables support for GPIOs found on Fintek Super-I/O 195 chips F71882FG and F71889F. 196 197 To compile this driver as a module, choose M here: the module will 198 be called f7188x-gpio. 199 200config GPIO_MOXART 201 bool "MOXART GPIO support" 202 depends on ARCH_MOXART 203 help 204 Select this option to enable GPIO driver for 205 MOXA ART SoC devices. 206 207config GPIO_MPC5200 208 def_bool y 209 depends on PPC_MPC52xx 210 211config GPIO_MPC8XXX 212 bool "MPC512x/MPC8xxx GPIO support" 213 depends on PPC_MPC512x || PPC_MPC831x || PPC_MPC834x || PPC_MPC837x || \ 214 FSL_SOC_BOOKE || PPC_86xx 215 help 216 Say Y here if you're going to use hardware that connects to the 217 MPC512x/831x/834x/837x/8572/8610 GPIOs. 218 219config GPIO_MSM_V1 220 tristate "Qualcomm MSM GPIO v1" 221 depends on GPIOLIB && ARCH_MSM && (ARCH_MSM7X00A || ARCH_MSM7X30 || ARCH_QSD8X50) 222 help 223 Say yes here to support the GPIO interface on ARM v6 based 224 Qualcomm MSM chips. Most of the pins on the MSM can be 225 selected for GPIO, and are controlled by this driver. 226 227config GPIO_MSM_V2 228 tristate "Qualcomm MSM GPIO v2" 229 depends on GPIOLIB && OF && ARCH_QCOM 230 help 231 Say yes here to support the GPIO interface on ARM v7 based 232 Qualcomm MSM chips. Most of the pins on the MSM can be 233 selected for GPIO, and are controlled by this driver. 234 235config GPIO_MVEBU 236 def_bool y 237 depends on PLAT_ORION 238 depends on OF 239 select GPIO_GENERIC 240 select GENERIC_IRQ_CHIP 241 242config GPIO_MXC 243 def_bool y 244 depends on ARCH_MXC 245 select GPIO_GENERIC 246 select GENERIC_IRQ_CHIP 247 248config GPIO_MXS 249 def_bool y 250 depends on ARCH_MXS 251 select GPIO_GENERIC 252 select GENERIC_IRQ_CHIP 253 254config GPIO_OCTEON 255 tristate "Cavium OCTEON GPIO" 256 depends on GPIOLIB && CAVIUM_OCTEON_SOC 257 default y 258 help 259 Say yes here to support the on-chip GPIO lines on the OCTEON 260 family of SOCs. 261 262config GPIO_OMAP 263 bool "TI OMAP GPIO support" if COMPILE_TEST && !ARCH_OMAP2PLUS 264 default y if ARCH_OMAP 265 depends on ARM 266 select GENERIC_IRQ_CHIP 267 select GPIOLIB_IRQCHIP 268 help 269 Say yes here to enable GPIO support for TI OMAP SoCs. 270 271config GPIO_PL061 272 bool "PrimeCell PL061 GPIO support" 273 depends on ARM_AMBA 274 select IRQ_DOMAIN 275 select GPIOLIB_IRQCHIP 276 help 277 Say yes here to support the PrimeCell PL061 GPIO device 278 279config GPIO_PXA 280 bool "PXA GPIO support" 281 depends on ARCH_PXA || ARCH_MMP 282 help 283 Say yes here to support the PXA GPIO device 284 285config GPIO_RCAR 286 tristate "Renesas R-Car GPIO" 287 depends on ARM && (ARCH_SHMOBILE || COMPILE_TEST) 288 help 289 Say yes here to support GPIO on Renesas R-Car SoCs. 290 291config GPIO_SAMSUNG 292 bool 293 depends on PLAT_SAMSUNG 294 help 295 Legacy GPIO support. Use only for platforms without support for 296 pinctrl. 297 298config GPIO_SCH311X 299 tristate "SMSC SCH311x SuperI/O GPIO" 300 help 301 Driver to enable the GPIOs found on SMSC SMSC SCH3112, SCH3114 and 302 SCH3116 "Super I/O" chipsets. 303 304 To compile this driver as a module, choose M here: the module will 305 be called gpio-sch311x. 306 307config GPIO_SPEAR_SPICS 308 bool "ST SPEAr13xx SPI Chip Select as GPIO support" 309 depends on PLAT_SPEAR 310 select GENERIC_IRQ_CHIP 311 help 312 Say yes here to support ST SPEAr SPI Chip Select as GPIO device 313 314config GPIO_STA2X11 315 bool "STA2x11/ConneXt GPIO support" 316 depends on MFD_STA2X11 317 select GENERIC_IRQ_CHIP 318 help 319 Say yes here to support the STA2x11/ConneXt GPIO device. 320 The GPIO module has 128 GPIO pins with alternate functions. 321 322config GPIO_SYSCON 323 tristate "GPIO based on SYSCON" 324 depends on MFD_SYSCON && OF 325 help 326 Say yes here to support GPIO functionality though SYSCON driver. 327 328config GPIO_TS5500 329 tristate "TS-5500 DIO blocks and compatibles" 330 depends on TS5500 || COMPILE_TEST 331 help 332 This driver supports Digital I/O exposed by pin blocks found on some 333 Technologic Systems platforms. It includes, but is not limited to, 3 334 blocks of the TS-5500: DIO1, DIO2 and the LCD port, and the TS-5600 335 LCD port. 336 337config GPIO_TZ1090 338 bool "Toumaz Xenif TZ1090 GPIO support" 339 depends on SOC_TZ1090 340 select GENERIC_IRQ_CHIP 341 default y 342 help 343 Say yes here to support Toumaz Xenif TZ1090 GPIOs. 344 345config GPIO_TZ1090_PDC 346 bool "Toumaz Xenif TZ1090 PDC GPIO support" 347 depends on SOC_TZ1090 348 default y 349 help 350 Say yes here to support Toumaz Xenif TZ1090 PDC GPIOs. 351 352config GPIO_VF610 353 def_bool y 354 depends on ARCH_MXC && SOC_VF610 355 select GPIOLIB_IRQCHIP 356 help 357 Say yes here to support Vybrid vf610 GPIOs. 358 359config GPIO_XGENE 360 bool "APM X-Gene GPIO controller support" 361 depends on ARM64 && OF_GPIO 362 help 363 This driver is to support the GPIO block within the APM X-Gene SoC 364 platform's generic flash controller. The GPIO pins are muxed with 365 the generic flash controller's address and data pins. Say yes 366 here to enable the GFC GPIO functionality. 367 368config GPIO_XILINX 369 bool "Xilinx GPIO support" 370 depends on PPC_OF || MICROBLAZE || ARCH_ZYNQ 371 help 372 Say yes here to support the Xilinx FPGA GPIO device 373 374config GPIO_ZYNQ 375 tristate "Xilinx Zynq GPIO support" 376 depends on ARCH_ZYNQ 377 select GPIOLIB_IRQCHIP 378 help 379 Say yes here to support Xilinx Zynq GPIO controller. 380 381config GPIO_XTENSA 382 bool "Xtensa GPIO32 support" 383 depends on XTENSA 384 depends on HAVE_XTENSA_GPIO32 385 depends on !SMP 386 help 387 Say yes here to support the Xtensa internal GPIO32 IMPWIRE (input) 388 and EXPSTATE (output) ports 389 390config GPIO_VR41XX 391 tristate "NEC VR4100 series General-purpose I/O Uint support" 392 depends on CPU_VR41XX 393 help 394 Say yes here to support the NEC VR4100 series General-purpose I/O Uint 395 396config GPIO_SCH 397 tristate "Intel SCH/TunnelCreek/Centerton GPIO" 398 depends on PCI && X86 399 select MFD_CORE 400 select LPC_SCH 401 help 402 Say yes here to support GPIO interface on Intel Poulsbo SCH, 403 Intel Tunnel Creek processor or Intel Centerton processor. 404 The Intel SCH contains a total of 14 GPIO pins. Ten GPIOs are 405 powered by the core power rail and are turned off during sleep 406 modes (S3 and higher). The remaining four GPIOs are powered by 407 the Intel SCH suspend power supply. These GPIOs remain 408 active during S3. The suspend powered GPIOs can be used to wake the 409 system from the Suspend-to-RAM state. 410 The Intel Tunnel Creek processor has 5 GPIOs powered by the 411 core power rail and 9 from suspend power supply. 412 The Intel Centerton processor has a total of 30 GPIO pins. 413 Twenty-one are powered by the core power rail and 9 from the 414 suspend power supply. 415 416config GPIO_ICH 417 tristate "Intel ICH GPIO" 418 depends on PCI && X86 419 select MFD_CORE 420 select LPC_ICH 421 help 422 Say yes here to support the GPIO functionality of a number of Intel 423 ICH-based chipsets. Currently supported devices: ICH6, ICH7, ICH8 424 ICH9, ICH10, Series 5/3400 (eg Ibex Peak), Series 6/C200 (eg 425 Cougar Point), NM10 (Tiger Point), and 3100 (Whitmore Lake). 426 427 If unsure, say N. 428 429config GPIO_IOP 430 tristate "Intel IOP GPIO" 431 depends on ARM && (ARCH_IOP32X || ARCH_IOP33X) 432 help 433 Say yes here to support the GPIO functionality of a number of Intel 434 IOP32X or IOP33X. 435 436 If unsure, say N. 437 438config GPIO_VX855 439 tristate "VIA VX855/VX875 GPIO" 440 depends on PCI 441 select MFD_CORE 442 select MFD_VX855 443 help 444 Support access to the VX855/VX875 GPIO lines through the gpio library. 445 446 This driver provides common support for accessing the device, 447 additional drivers must be enabled in order to use the 448 functionality of the device. 449 450config GPIO_GE_FPGA 451 bool "GE FPGA based GPIO" 452 depends on GE_FPGA 453 help 454 Support for common GPIO functionality provided on some GE Single Board 455 Computers. 456 457 This driver provides basic support (configure as input or output, read 458 and write pin state) for GPIO implemented in a number of GE single 459 board computers. 460 461config GPIO_LYNXPOINT 462 tristate "Intel Lynxpoint GPIO support" 463 depends on ACPI && X86 464 select GPIOLIB_IRQCHIP 465 help 466 driver for GPIO functionality on Intel Lynxpoint PCH chipset 467 Requires ACPI device enumeration code to set up a platform device. 468 469config GPIO_GRGPIO 470 tristate "Aeroflex Gaisler GRGPIO support" 471 depends on OF 472 select GPIO_GENERIC 473 select IRQ_DOMAIN 474 help 475 Select this to support Aeroflex Gaisler GRGPIO cores from the GRLIB 476 VHDL IP core library. 477 478config GPIO_TB10X 479 bool 480 select GENERIC_IRQ_CHIP 481 select OF_GPIO 482 483comment "I2C GPIO expanders:" 484 485config GPIO_ARIZONA 486 tristate "Wolfson Microelectronics Arizona class devices" 487 depends on MFD_ARIZONA 488 help 489 Support for GPIOs on Wolfson Arizona class devices. 490 491config GPIO_CRYSTAL_COVE 492 tristate "GPIO support for Crystal Cove PMIC" 493 depends on INTEL_SOC_PMIC 494 select GPIOLIB_IRQCHIP 495 help 496 Support for GPIO pins on Crystal Cove PMIC. 497 498 Say Yes if you have a Intel SoC based tablet with Crystal Cove PMIC 499 inside. 500 501 This driver can also be built as a module. If so, the module will be 502 called gpio-crystalcove. 503 504config GPIO_LP3943 505 tristate "TI/National Semiconductor LP3943 GPIO expander" 506 depends on MFD_LP3943 507 help 508 GPIO driver for LP3943 MFD. 509 LP3943 can be used as a GPIO expander which provides up to 16 GPIOs. 510 Open drain outputs are required for this usage. 511 512config GPIO_MAX7300 513 tristate "Maxim MAX7300 GPIO expander" 514 depends on I2C 515 select GPIO_MAX730X 516 help 517 GPIO driver for Maxim MAX7300 I2C-based GPIO expander. 518 519config GPIO_MAX732X 520 tristate "MAX7319, MAX7320-7327 I2C Port Expanders" 521 depends on I2C 522 help 523 Say yes here to support the MAX7319, MAX7320-7327 series of I2C 524 Port Expanders. Each IO port on these chips has a fixed role of 525 Input (designated by 'I'), Push-Pull Output ('O'), or Open-Drain 526 Input and Output (designed by 'P'). The combinations are listed 527 below: 528 529 8 bits: max7319 (8I), max7320 (8O), max7321 (8P), 530 max7322 (4I4O), max7323 (4P4O) 531 532 16 bits: max7324 (8I8O), max7325 (8P8O), 533 max7326 (4I12O), max7327 (4P12O) 534 535 Board setup code must specify the model to use, and the start 536 number for these GPIOs. 537 538config GPIO_MAX732X_IRQ 539 bool "Interrupt controller support for MAX732x" 540 depends on GPIO_MAX732X=y 541 help 542 Say yes here to enable the max732x to be used as an interrupt 543 controller. It requires the driver to be built in the kernel. 544 545config GPIO_MC9S08DZ60 546 bool "MX35 3DS BOARD MC9S08DZ60 GPIO functions" 547 depends on I2C=y && MACH_MX35_3DS 548 help 549 Select this to enable the MC9S08DZ60 GPIO driver 550 551config GPIO_PCA953X 552 tristate "PCA95[357]x, PCA9698, TCA64xx, and MAX7310 I/O ports" 553 depends on I2C 554 help 555 Say yes here to provide access to several register-oriented 556 SMBus I/O expanders, made mostly by NXP or TI. Compatible 557 models include: 558 559 4 bits: pca9536, pca9537 560 561 8 bits: max7310, max7315, pca6107, pca9534, pca9538, pca9554, 562 pca9556, pca9557, pca9574, tca6408, xra1202 563 564 16 bits: max7312, max7313, pca9535, pca9539, pca9555, pca9575, 565 tca6416 566 567 24 bits: tca6424 568 569 40 bits: pca9505, pca9698 570 571config GPIO_PCA953X_IRQ 572 bool "Interrupt controller support for PCA953x" 573 depends on GPIO_PCA953X=y 574 select GPIOLIB_IRQCHIP 575 help 576 Say yes here to enable the pca953x to be used as an interrupt 577 controller. It requires the driver to be built in the kernel. 578 579config GPIO_PCF857X 580 tristate "PCF857x, PCA{85,96}7x, and MAX732[89] I2C GPIO expanders" 581 depends on I2C 582 select IRQ_DOMAIN 583 help 584 Say yes here to provide access to most "quasi-bidirectional" I2C 585 GPIO expanders used for additional digital outputs or inputs. 586 Most of these parts are from NXP, though TI is a second source for 587 some of them. Compatible models include: 588 589 8 bits: pcf8574, pcf8574a, pca8574, pca8574a, 590 pca9670, pca9672, pca9674, pca9674a, 591 max7328, max7329 592 593 16 bits: pcf8575, pcf8575c, pca8575, 594 pca9671, pca9673, pca9675 595 596 Your board setup code will need to declare the expanders in 597 use, and assign numbers to the GPIOs they expose. Those GPIOs 598 can then be used from drivers and other kernel code, just like 599 other GPIOs, but only accessible from task contexts. 600 601 This driver provides an in-kernel interface to those GPIOs using 602 platform-neutral GPIO calls. 603 604config GPIO_RC5T583 605 bool "RICOH RC5T583 GPIO" 606 depends on MFD_RC5T583 607 help 608 Select this option to enable GPIO driver for the Ricoh RC5T583 609 chip family. 610 This driver provides the support for driving/reading the gpio pins 611 of RC5T583 device through standard gpio library. 612 613config GPIO_SX150X 614 bool "Semtech SX150x I2C GPIO expander" 615 depends on I2C=y 616 default n 617 help 618 Say yes here to provide support for Semtech SX150-series I2C 619 GPIO expanders. Compatible models include: 620 621 8 bits: sx1508q 622 16 bits: sx1509q 623 624config GPIO_STMPE 625 bool "STMPE GPIOs" 626 depends on MFD_STMPE 627 select GPIOLIB_IRQCHIP 628 help 629 This enables support for the GPIOs found on the STMPE I/O 630 Expanders. 631 632config GPIO_STP_XWAY 633 bool "XWAY STP GPIOs" 634 depends on SOC_XWAY 635 help 636 This enables support for the Serial To Parallel (STP) unit found on 637 XWAY SoC. The STP allows the SoC to drive a shift registers cascade, 638 that can be up to 24 bit. This peripheral is aimed at driving leds. 639 Some of the gpios/leds can be auto updated by the soc with dsl and 640 phy status. 641 642config GPIO_TC3589X 643 bool "TC3589X GPIOs" 644 depends on MFD_TC3589X 645 select GPIOLIB_IRQCHIP 646 help 647 This enables support for the GPIOs found on the TC3589X 648 I/O Expander. 649 650config GPIO_TPS65912 651 tristate "TI TPS65912 GPIO" 652 depends on (MFD_TPS65912_I2C || MFD_TPS65912_SPI) 653 help 654 This driver supports TPS65912 gpio chip 655 656config GPIO_TWL4030 657 tristate "TWL4030, TWL5030, and TPS659x0 GPIOs" 658 depends on TWL4030_CORE 659 help 660 Say yes here to access the GPIO signals of various multi-function 661 power management chips from Texas Instruments. 662 663config GPIO_TWL6040 664 tristate "TWL6040 GPO" 665 depends on TWL6040_CORE 666 help 667 Say yes here to access the GPO signals of twl6040 668 audio chip from Texas Instruments. 669 670config GPIO_WM831X 671 tristate "WM831x GPIOs" 672 depends on MFD_WM831X 673 help 674 Say yes here to access the GPIO signals of WM831x power management 675 chips from Wolfson Microelectronics. 676 677config GPIO_WM8350 678 tristate "WM8350 GPIOs" 679 depends on MFD_WM8350 680 help 681 Say yes here to access the GPIO signals of WM8350 power management 682 chips from Wolfson Microelectronics. 683 684config GPIO_WM8994 685 tristate "WM8994 GPIOs" 686 depends on MFD_WM8994 687 help 688 Say yes here to access the GPIO signals of WM8994 audio hub 689 CODECs from Wolfson Microelectronics. 690 691config GPIO_ADP5520 692 tristate "GPIO Support for ADP5520 PMIC" 693 depends on PMIC_ADP5520 694 help 695 This option enables support for on-chip GPIO found 696 on Analog Devices ADP5520 PMICs. 697 698config GPIO_ADP5588 699 tristate "ADP5588 I2C GPIO expander" 700 depends on I2C 701 help 702 This option enables support for 18 GPIOs found 703 on Analog Devices ADP5588 GPIO Expanders. 704 705config GPIO_ADP5588_IRQ 706 bool "Interrupt controller support for ADP5588" 707 depends on GPIO_ADP5588=y 708 help 709 Say yes here to enable the adp5588 to be used as an interrupt 710 controller. It requires the driver to be built in the kernel. 711 712config GPIO_ADNP 713 tristate "Avionic Design N-bit GPIO expander" 714 depends on I2C && OF_GPIO 715 select GPIOLIB_IRQCHIP 716 help 717 This option enables support for N GPIOs found on Avionic Design 718 I2C GPIO expanders. The register space will be extended by powers 719 of two, so the controller will need to accommodate for that. For 720 example: if a controller provides 48 pins, 6 registers will be 721 enough to represent all pins, but the driver will assume a 722 register layout for 64 pins (8 registers). 723 724comment "PCI GPIO expanders:" 725 726config GPIO_CS5535 727 tristate "AMD CS5535/CS5536 GPIO support" 728 depends on MFD_CS5535 729 help 730 The AMD CS5535 and CS5536 southbridges support 28 GPIO pins that 731 can be used for quite a number of things. The CS5535/6 is found on 732 AMD Geode and Lemote Yeeloong devices. 733 734 If unsure, say N. 735 736config GPIO_BT8XX 737 tristate "BT8XX GPIO abuser" 738 depends on PCI && VIDEO_BT848=n 739 help 740 The BT8xx frame grabber chip has 24 GPIO pins that can be abused 741 as a cheap PCI GPIO card. 742 743 This chip can be found on Miro, Hauppauge and STB TV-cards. 744 745 The card needs to be physically altered for using it as a 746 GPIO card. For more information on how to build a GPIO card 747 from a BT8xx TV card, see the documentation file at 748 Documentation/bt8xxgpio.txt 749 750 If unsure, say N. 751 752config GPIO_AMD8111 753 tristate "AMD 8111 GPIO driver" 754 depends on PCI 755 help 756 The AMD 8111 south bridge contains 32 GPIO pins which can be used. 757 758 Note, that usually system firmware/ACPI handles GPIO pins on their 759 own and users might easily break their systems with uncarefull usage 760 of this driver! 761 762 If unsure, say N 763 764config GPIO_INTEL_MID 765 bool "Intel Mid GPIO support" 766 depends on PCI && X86 767 select GPIOLIB_IRQCHIP 768 help 769 Say Y here to support Intel Mid GPIO. 770 771config GPIO_PCH 772 tristate "Intel EG20T PCH/LAPIS Semiconductor IOH(ML7223/ML7831) GPIO" 773 depends on PCI && (X86_32 || COMPILE_TEST) 774 select GENERIC_IRQ_CHIP 775 help 776 This driver is for PCH(Platform controller Hub) GPIO of Intel Topcliff 777 which is an IOH(Input/Output Hub) for x86 embedded processor. 778 This driver can access PCH GPIO device. 779 780 This driver also can be used for LAPIS Semiconductor IOH(Input/ 781 Output Hub), ML7223 and ML7831. 782 ML7223 IOH is for MP(Media Phone) use. 783 ML7831 IOH is for general purpose use. 784 ML7223/ML7831 is companion chip for Intel Atom E6xx series. 785 ML7223/ML7831 is completely compatible for Intel EG20T PCH. 786 787config GPIO_ML_IOH 788 tristate "OKI SEMICONDUCTOR ML7213 IOH GPIO support" 789 depends on PCI 790 select GENERIC_IRQ_CHIP 791 help 792 ML7213 is companion chip for Intel Atom E6xx series. 793 This driver can be used for OKI SEMICONDUCTOR ML7213 IOH(Input/Output 794 Hub) which is for IVI(In-Vehicle Infotainment) use. 795 This driver can access the IOH's GPIO device. 796 797config GPIO_SODAVILLE 798 bool "Intel Sodaville GPIO support" 799 depends on X86 && PCI && OF 800 select GPIO_GENERIC 801 select GENERIC_IRQ_CHIP 802 help 803 Say Y here to support Intel Sodaville GPIO. 804 805config GPIO_TIMBERDALE 806 bool "Support for timberdale GPIO IP" 807 depends on MFD_TIMBERDALE 808 ---help--- 809 Add support for the GPIO IP in the timberdale FPGA. 810 811config GPIO_RDC321X 812 tristate "RDC R-321x GPIO support" 813 depends on PCI 814 select MFD_CORE 815 select MFD_RDC321X 816 help 817 Support for the RDC R321x SoC GPIOs over southbridge 818 PCI configuration space. 819 820comment "SPI GPIO expanders:" 821 822config GPIO_MAX7301 823 tristate "Maxim MAX7301 GPIO expander" 824 depends on SPI_MASTER 825 select GPIO_MAX730X 826 help 827 GPIO driver for Maxim MAX7301 SPI-based GPIO expander. 828 829config GPIO_MCP23S08 830 tristate "Microchip MCP23xxx I/O expander" 831 depends on (SPI_MASTER && !I2C) || I2C 832 help 833 SPI/I2C driver for Microchip MCP23S08/MCP23S17/MCP23008/MCP23017 834 I/O expanders. 835 This provides a GPIO interface supporting inputs and outputs. 836 The I2C versions of the chips can be used as interrupt-controller. 837 838config GPIO_MC33880 839 tristate "Freescale MC33880 high-side/low-side switch" 840 depends on SPI_MASTER 841 help 842 SPI driver for Freescale MC33880 high-side/low-side switch. 843 This provides GPIO interface supporting inputs and outputs. 844 845config GPIO_74X164 846 tristate "74x164 serial-in/parallel-out 8-bits shift register" 847 depends on SPI_MASTER && OF 848 help 849 Driver for 74x164 compatible serial-in/parallel-out 8-outputs 850 shift registers. This driver can be used to provide access 851 to more gpio outputs. 852 853comment "AC97 GPIO expanders:" 854 855config GPIO_UCB1400 856 tristate "Philips UCB1400 GPIO" 857 depends on UCB1400_CORE 858 help 859 This enables support for the Philips UCB1400 GPIO pins. 860 The UCB1400 is an AC97 audio codec. 861 862comment "LPC GPIO expanders:" 863 864config GPIO_KEMPLD 865 tristate "Kontron ETX / COMexpress GPIO" 866 depends on MFD_KEMPLD 867 help 868 This enables support for the PLD GPIO interface on some Kontron ETX 869 and COMexpress (ETXexpress) modules. 870 871 This driver can also be built as a module. If so, the module will be 872 called gpio-kempld. 873 874comment "MODULbus GPIO expanders:" 875 876config GPIO_JANZ_TTL 877 tristate "Janz VMOD-TTL Digital IO Module" 878 depends on MFD_JANZ_CMODIO 879 help 880 This enables support for the Janz VMOD-TTL Digital IO module. 881 This driver provides support for driving the pins in output 882 mode only. Input mode is not supported. 883 884config GPIO_PALMAS 885 bool "TI PALMAS series PMICs GPIO" 886 depends on MFD_PALMAS 887 help 888 Select this option to enable GPIO driver for the TI PALMAS 889 series chip family. 890 891config GPIO_TPS6586X 892 bool "TPS6586X GPIO" 893 depends on MFD_TPS6586X 894 help 895 Select this option to enable GPIO driver for the TPS6586X 896 chip family. 897 898config GPIO_TPS65910 899 bool "TPS65910 GPIO" 900 depends on MFD_TPS65910 901 help 902 Select this option to enable GPIO driver for the TPS65910 903 chip family. 904 905config GPIO_MSIC 906 bool "Intel MSIC mixed signal gpio support" 907 depends on MFD_INTEL_MSIC 908 help 909 Enable support for GPIO on intel MSIC controllers found in 910 intel MID devices 911 912config GPIO_BCM_KONA 913 bool "Broadcom Kona GPIO" 914 depends on OF_GPIO && (ARCH_BCM_MOBILE || COMPILE_TEST) 915 help 916 Turn on GPIO support for Broadcom "Kona" chips. 917 918comment "USB GPIO expanders:" 919 920config GPIO_VIPERBOARD 921 tristate "Viperboard GPIO a & b support" 922 depends on MFD_VIPERBOARD && USB 923 help 924 Say yes here to access the GPIO signals of Nano River 925 Technologies Viperboard. There are two GPIO chips on the 926 board: gpioa and gpiob. 927 See viperboard API specification and Nano 928 River Tech's viperboard.h for detailed meaning 929 of the module parameters. 930 931config GPIO_DLN2 932 tristate "Diolan DLN2 GPIO support" 933 depends on MFD_DLN2 934 select GPIOLIB_IRQCHIP 935 936 help 937 Select this option to enable GPIO driver for the Diolan DLN2 938 board. 939 940 This driver can also be built as a module. If so, the module 941 will be called gpio-dln2. 942 943endif 944