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 select GPIO_GENERIC 204 help 205 Select this option to enable GPIO driver for 206 MOXA ART SoC devices. 207 208config GPIO_MPC5200 209 def_bool y 210 depends on PPC_MPC52xx 211 212config GPIO_MPC8XXX 213 bool "MPC512x/MPC8xxx GPIO support" 214 depends on PPC_MPC512x || PPC_MPC831x || PPC_MPC834x || PPC_MPC837x || \ 215 FSL_SOC_BOOKE || PPC_86xx 216 help 217 Say Y here if you're going to use hardware that connects to the 218 MPC512x/831x/834x/837x/8572/8610 GPIOs. 219 220config GPIO_MSM_V1 221 tristate "Qualcomm MSM GPIO v1" 222 depends on GPIOLIB && ARCH_MSM && (ARCH_MSM7X00A || ARCH_MSM7X30 || ARCH_QSD8X50) 223 help 224 Say yes here to support the GPIO interface on ARM v6 based 225 Qualcomm MSM chips. Most of the pins on the MSM can be 226 selected for GPIO, and are controlled by this driver. 227 228config GPIO_MSM_V2 229 tristate "Qualcomm MSM GPIO v2" 230 depends on GPIOLIB && OF && ARCH_QCOM 231 help 232 Say yes here to support the GPIO interface on ARM v7 based 233 Qualcomm MSM chips. Most of the pins on the MSM can be 234 selected for GPIO, and are controlled by this driver. 235 236config GPIO_MVEBU 237 def_bool y 238 depends on PLAT_ORION 239 depends on OF 240 select GPIO_GENERIC 241 select GENERIC_IRQ_CHIP 242 243config GPIO_MXC 244 def_bool y 245 depends on ARCH_MXC 246 select GPIO_GENERIC 247 select GENERIC_IRQ_CHIP 248 249config GPIO_MXS 250 def_bool y 251 depends on ARCH_MXS 252 select GPIO_GENERIC 253 select GENERIC_IRQ_CHIP 254 255config GPIO_OCTEON 256 tristate "Cavium OCTEON GPIO" 257 depends on GPIOLIB && CAVIUM_OCTEON_SOC 258 default y 259 help 260 Say yes here to support the on-chip GPIO lines on the OCTEON 261 family of SOCs. 262 263config GPIO_OMAP 264 bool "TI OMAP GPIO support" if COMPILE_TEST && !ARCH_OMAP2PLUS 265 default y if ARCH_OMAP 266 depends on ARM 267 select GENERIC_IRQ_CHIP 268 select GPIOLIB_IRQCHIP 269 help 270 Say yes here to enable GPIO support for TI OMAP SoCs. 271 272config GPIO_PL061 273 bool "PrimeCell PL061 GPIO support" 274 depends on ARM_AMBA 275 select IRQ_DOMAIN 276 select GPIOLIB_IRQCHIP 277 help 278 Say yes here to support the PrimeCell PL061 GPIO device 279 280config GPIO_PXA 281 bool "PXA GPIO support" 282 depends on ARCH_PXA || ARCH_MMP 283 help 284 Say yes here to support the PXA GPIO device 285 286config GPIO_RCAR 287 tristate "Renesas R-Car GPIO" 288 depends on ARM && (ARCH_SHMOBILE || COMPILE_TEST) 289 select GPIOLIB_IRQCHIP 290 help 291 Say yes here to support GPIO on Renesas R-Car SoCs. 292 293config GPIO_SAMSUNG 294 bool 295 depends on PLAT_SAMSUNG 296 help 297 Legacy GPIO support. Use only for platforms without support for 298 pinctrl. 299 300config GPIO_SCH311X 301 tristate "SMSC SCH311x SuperI/O GPIO" 302 help 303 Driver to enable the GPIOs found on SMSC SMSC SCH3112, SCH3114 and 304 SCH3116 "Super I/O" chipsets. 305 306 To compile this driver as a module, choose M here: the module will 307 be called gpio-sch311x. 308 309config GPIO_SPEAR_SPICS 310 bool "ST SPEAr13xx SPI Chip Select as GPIO support" 311 depends on PLAT_SPEAR 312 select GENERIC_IRQ_CHIP 313 help 314 Say yes here to support ST SPEAr SPI Chip Select as GPIO device 315 316config GPIO_STA2X11 317 bool "STA2x11/ConneXt GPIO support" 318 depends on MFD_STA2X11 319 select GENERIC_IRQ_CHIP 320 help 321 Say yes here to support the STA2x11/ConneXt GPIO device. 322 The GPIO module has 128 GPIO pins with alternate functions. 323 324config GPIO_SYSCON 325 tristate "GPIO based on SYSCON" 326 depends on MFD_SYSCON && OF 327 help 328 Say yes here to support GPIO functionality though SYSCON driver. 329 330config GPIO_TS5500 331 tristate "TS-5500 DIO blocks and compatibles" 332 depends on TS5500 || COMPILE_TEST 333 help 334 This driver supports Digital I/O exposed by pin blocks found on some 335 Technologic Systems platforms. It includes, but is not limited to, 3 336 blocks of the TS-5500: DIO1, DIO2 and the LCD port, and the TS-5600 337 LCD port. 338 339config GPIO_TZ1090 340 bool "Toumaz Xenif TZ1090 GPIO support" 341 depends on SOC_TZ1090 342 select GENERIC_IRQ_CHIP 343 default y 344 help 345 Say yes here to support Toumaz Xenif TZ1090 GPIOs. 346 347config GPIO_TZ1090_PDC 348 bool "Toumaz Xenif TZ1090 PDC GPIO support" 349 depends on SOC_TZ1090 350 default y 351 help 352 Say yes here to support Toumaz Xenif TZ1090 PDC GPIOs. 353 354config GPIO_VF610 355 def_bool y 356 depends on ARCH_MXC && SOC_VF610 357 select GPIOLIB_IRQCHIP 358 help 359 Say yes here to support Vybrid vf610 GPIOs. 360 361config GPIO_XGENE 362 bool "APM X-Gene GPIO controller support" 363 depends on ARM64 && OF_GPIO 364 help 365 This driver is to support the GPIO block within the APM X-Gene SoC 366 platform's generic flash controller. The GPIO pins are muxed with 367 the generic flash controller's address and data pins. Say yes 368 here to enable the GFC GPIO functionality. 369 370config GPIO_XILINX 371 tristate "Xilinx GPIO support" 372 depends on OF_GPIO && (PPC_OF || MICROBLAZE || ARCH_ZYNQ || ARCH_X86) 373 help 374 Say yes here to support the Xilinx FPGA GPIO device 375 376config GPIO_ZYNQ 377 tristate "Xilinx Zynq GPIO support" 378 depends on ARCH_ZYNQ 379 select GPIOLIB_IRQCHIP 380 help 381 Say yes here to support Xilinx Zynq GPIO controller. 382 383config GPIO_XTENSA 384 bool "Xtensa GPIO32 support" 385 depends on XTENSA 386 depends on HAVE_XTENSA_GPIO32 387 depends on !SMP 388 help 389 Say yes here to support the Xtensa internal GPIO32 IMPWIRE (input) 390 and EXPSTATE (output) ports 391 392config GPIO_VR41XX 393 tristate "NEC VR4100 series General-purpose I/O Uint support" 394 depends on CPU_VR41XX 395 help 396 Say yes here to support the NEC VR4100 series General-purpose I/O Uint 397 398config GPIO_SCH 399 tristate "Intel SCH/TunnelCreek/Centerton/Quark X1000 GPIO" 400 depends on PCI && X86 401 select MFD_CORE 402 select LPC_SCH 403 help 404 Say yes here to support GPIO interface on Intel Poulsbo SCH, 405 Intel Tunnel Creek processor, Intel Centerton processor or 406 Intel Quark X1000 SoC. 407 408 The Intel SCH contains a total of 14 GPIO pins. Ten GPIOs are 409 powered by the core power rail and are turned off during sleep 410 modes (S3 and higher). The remaining four GPIOs are powered by 411 the Intel SCH suspend power supply. These GPIOs remain 412 active during S3. The suspend powered GPIOs can be used to wake the 413 system from the Suspend-to-RAM state. 414 415 The Intel Tunnel Creek processor has 5 GPIOs powered by the 416 core power rail and 9 from suspend power supply. 417 418 The Intel Centerton processor has a total of 30 GPIO pins. 419 Twenty-one are powered by the core power rail and 9 from the 420 suspend power supply. 421 422 The Intel Quark X1000 SoC has 2 GPIOs powered by the core 423 power well and 6 from the suspend power well. 424 425config GPIO_ICH 426 tristate "Intel ICH GPIO" 427 depends on PCI && X86 428 select MFD_CORE 429 select LPC_ICH 430 help 431 Say yes here to support the GPIO functionality of a number of Intel 432 ICH-based chipsets. Currently supported devices: ICH6, ICH7, ICH8 433 ICH9, ICH10, Series 5/3400 (eg Ibex Peak), Series 6/C200 (eg 434 Cougar Point), NM10 (Tiger Point), and 3100 (Whitmore Lake). 435 436 If unsure, say N. 437 438config GPIO_IOP 439 tristate "Intel IOP GPIO" 440 depends on ARM && (ARCH_IOP32X || ARCH_IOP33X) 441 help 442 Say yes here to support the GPIO functionality of a number of Intel 443 IOP32X or IOP33X. 444 445 If unsure, say N. 446 447config GPIO_VX855 448 tristate "VIA VX855/VX875 GPIO" 449 depends on PCI 450 select MFD_CORE 451 select MFD_VX855 452 help 453 Support access to the VX855/VX875 GPIO lines through the gpio library. 454 455 This driver provides common support for accessing the device, 456 additional drivers must be enabled in order to use the 457 functionality of the device. 458 459config GPIO_GE_FPGA 460 bool "GE FPGA based GPIO" 461 depends on GE_FPGA 462 help 463 Support for common GPIO functionality provided on some GE Single Board 464 Computers. 465 466 This driver provides basic support (configure as input or output, read 467 and write pin state) for GPIO implemented in a number of GE single 468 board computers. 469 470config GPIO_LYNXPOINT 471 tristate "Intel Lynxpoint GPIO support" 472 depends on ACPI && X86 473 select GPIOLIB_IRQCHIP 474 help 475 driver for GPIO functionality on Intel Lynxpoint PCH chipset 476 Requires ACPI device enumeration code to set up a platform device. 477 478config GPIO_GRGPIO 479 tristate "Aeroflex Gaisler GRGPIO support" 480 depends on OF 481 select GPIO_GENERIC 482 select IRQ_DOMAIN 483 help 484 Select this to support Aeroflex Gaisler GRGPIO cores from the GRLIB 485 VHDL IP core library. 486 487config GPIO_TB10X 488 bool 489 select GENERIC_IRQ_CHIP 490 select OF_GPIO 491 492comment "I2C GPIO expanders:" 493 494config GPIO_ARIZONA 495 tristate "Wolfson Microelectronics Arizona class devices" 496 depends on MFD_ARIZONA 497 help 498 Support for GPIOs on Wolfson Arizona class devices. 499 500config GPIO_CRYSTAL_COVE 501 tristate "GPIO support for Crystal Cove PMIC" 502 depends on INTEL_SOC_PMIC 503 select GPIOLIB_IRQCHIP 504 help 505 Support for GPIO pins on Crystal Cove PMIC. 506 507 Say Yes if you have a Intel SoC based tablet with Crystal Cove PMIC 508 inside. 509 510 This driver can also be built as a module. If so, the module will be 511 called gpio-crystalcove. 512 513config GPIO_LP3943 514 tristate "TI/National Semiconductor LP3943 GPIO expander" 515 depends on MFD_LP3943 516 help 517 GPIO driver for LP3943 MFD. 518 LP3943 can be used as a GPIO expander which provides up to 16 GPIOs. 519 Open drain outputs are required for this usage. 520 521config GPIO_MAX7300 522 tristate "Maxim MAX7300 GPIO expander" 523 depends on I2C 524 select GPIO_MAX730X 525 help 526 GPIO driver for Maxim MAX7300 I2C-based GPIO expander. 527 528config GPIO_MAX732X 529 tristate "MAX7319, MAX7320-7327 I2C Port Expanders" 530 depends on I2C 531 help 532 Say yes here to support the MAX7319, MAX7320-7327 series of I2C 533 Port Expanders. Each IO port on these chips has a fixed role of 534 Input (designated by 'I'), Push-Pull Output ('O'), or Open-Drain 535 Input and Output (designed by 'P'). The combinations are listed 536 below: 537 538 8 bits: max7319 (8I), max7320 (8O), max7321 (8P), 539 max7322 (4I4O), max7323 (4P4O) 540 541 16 bits: max7324 (8I8O), max7325 (8P8O), 542 max7326 (4I12O), max7327 (4P12O) 543 544 Board setup code must specify the model to use, and the start 545 number for these GPIOs. 546 547config GPIO_MAX732X_IRQ 548 bool "Interrupt controller support for MAX732x" 549 depends on GPIO_MAX732X=y 550 help 551 Say yes here to enable the max732x to be used as an interrupt 552 controller. It requires the driver to be built in the kernel. 553 554config GPIO_MC9S08DZ60 555 bool "MX35 3DS BOARD MC9S08DZ60 GPIO functions" 556 depends on I2C=y && MACH_MX35_3DS 557 help 558 Select this to enable the MC9S08DZ60 GPIO driver 559 560config GPIO_PCA953X 561 tristate "PCA95[357]x, PCA9698, TCA64xx, and MAX7310 I/O ports" 562 depends on I2C 563 help 564 Say yes here to provide access to several register-oriented 565 SMBus I/O expanders, made mostly by NXP or TI. Compatible 566 models include: 567 568 4 bits: pca9536, pca9537 569 570 8 bits: max7310, max7315, pca6107, pca9534, pca9538, pca9554, 571 pca9556, pca9557, pca9574, tca6408, xra1202 572 573 16 bits: max7312, max7313, pca9535, pca9539, pca9555, pca9575, 574 tca6416 575 576 24 bits: tca6424 577 578 40 bits: pca9505, pca9698 579 580config GPIO_PCA953X_IRQ 581 bool "Interrupt controller support for PCA953x" 582 depends on GPIO_PCA953X=y 583 select GPIOLIB_IRQCHIP 584 help 585 Say yes here to enable the pca953x to be used as an interrupt 586 controller. It requires the driver to be built in the kernel. 587 588config GPIO_PCF857X 589 tristate "PCF857x, PCA{85,96}7x, and MAX732[89] I2C GPIO expanders" 590 depends on I2C 591 select IRQ_DOMAIN 592 help 593 Say yes here to provide access to most "quasi-bidirectional" I2C 594 GPIO expanders used for additional digital outputs or inputs. 595 Most of these parts are from NXP, though TI is a second source for 596 some of them. Compatible models include: 597 598 8 bits: pcf8574, pcf8574a, pca8574, pca8574a, 599 pca9670, pca9672, pca9674, pca9674a, 600 max7328, max7329 601 602 16 bits: pcf8575, pcf8575c, pca8575, 603 pca9671, pca9673, pca9675 604 605 Your board setup code will need to declare the expanders in 606 use, and assign numbers to the GPIOs they expose. Those GPIOs 607 can then be used from drivers and other kernel code, just like 608 other GPIOs, but only accessible from task contexts. 609 610 This driver provides an in-kernel interface to those GPIOs using 611 platform-neutral GPIO calls. 612 613config GPIO_RC5T583 614 bool "RICOH RC5T583 GPIO" 615 depends on MFD_RC5T583 616 help 617 Select this option to enable GPIO driver for the Ricoh RC5T583 618 chip family. 619 This driver provides the support for driving/reading the gpio pins 620 of RC5T583 device through standard gpio library. 621 622config GPIO_SX150X 623 bool "Semtech SX150x I2C GPIO expander" 624 depends on I2C=y 625 select GPIOLIB_IRQCHIP 626 default n 627 help 628 Say yes here to provide support for Semtech SX150-series I2C 629 GPIO expanders. Compatible models include: 630 631 8 bits: sx1508q 632 16 bits: sx1509q 633 634config GPIO_STMPE 635 bool "STMPE GPIOs" 636 depends on MFD_STMPE 637 select GPIOLIB_IRQCHIP 638 help 639 This enables support for the GPIOs found on the STMPE I/O 640 Expanders. 641 642config GPIO_STP_XWAY 643 bool "XWAY STP GPIOs" 644 depends on SOC_XWAY 645 help 646 This enables support for the Serial To Parallel (STP) unit found on 647 XWAY SoC. The STP allows the SoC to drive a shift registers cascade, 648 that can be up to 24 bit. This peripheral is aimed at driving leds. 649 Some of the gpios/leds can be auto updated by the soc with dsl and 650 phy status. 651 652config GPIO_TC3589X 653 bool "TC3589X GPIOs" 654 depends on MFD_TC3589X 655 select GPIOLIB_IRQCHIP 656 help 657 This enables support for the GPIOs found on the TC3589X 658 I/O Expander. 659 660config GPIO_TPS65912 661 tristate "TI TPS65912 GPIO" 662 depends on (MFD_TPS65912_I2C || MFD_TPS65912_SPI) 663 help 664 This driver supports TPS65912 gpio chip 665 666config GPIO_TWL4030 667 tristate "TWL4030, TWL5030, and TPS659x0 GPIOs" 668 depends on TWL4030_CORE 669 help 670 Say yes here to access the GPIO signals of various multi-function 671 power management chips from Texas Instruments. 672 673config GPIO_TWL6040 674 tristate "TWL6040 GPO" 675 depends on TWL6040_CORE 676 help 677 Say yes here to access the GPO signals of twl6040 678 audio chip from Texas Instruments. 679 680config GPIO_WM831X 681 tristate "WM831x GPIOs" 682 depends on MFD_WM831X 683 help 684 Say yes here to access the GPIO signals of WM831x power management 685 chips from Wolfson Microelectronics. 686 687config GPIO_WM8350 688 tristate "WM8350 GPIOs" 689 depends on MFD_WM8350 690 help 691 Say yes here to access the GPIO signals of WM8350 power management 692 chips from Wolfson Microelectronics. 693 694config GPIO_WM8994 695 tristate "WM8994 GPIOs" 696 depends on MFD_WM8994 697 help 698 Say yes here to access the GPIO signals of WM8994 audio hub 699 CODECs from Wolfson Microelectronics. 700 701config GPIO_ADP5520 702 tristate "GPIO Support for ADP5520 PMIC" 703 depends on PMIC_ADP5520 704 help 705 This option enables support for on-chip GPIO found 706 on Analog Devices ADP5520 PMICs. 707 708config GPIO_ADP5588 709 tristate "ADP5588 I2C GPIO expander" 710 depends on I2C 711 help 712 This option enables support for 18 GPIOs found 713 on Analog Devices ADP5588 GPIO Expanders. 714 715config GPIO_ADP5588_IRQ 716 bool "Interrupt controller support for ADP5588" 717 depends on GPIO_ADP5588=y 718 help 719 Say yes here to enable the adp5588 to be used as an interrupt 720 controller. It requires the driver to be built in the kernel. 721 722config GPIO_ADNP 723 tristate "Avionic Design N-bit GPIO expander" 724 depends on I2C && OF_GPIO 725 select GPIOLIB_IRQCHIP 726 help 727 This option enables support for N GPIOs found on Avionic Design 728 I2C GPIO expanders. The register space will be extended by powers 729 of two, so the controller will need to accommodate for that. For 730 example: if a controller provides 48 pins, 6 registers will be 731 enough to represent all pins, but the driver will assume a 732 register layout for 64 pins (8 registers). 733 734comment "PCI GPIO expanders:" 735 736config GPIO_CS5535 737 tristate "AMD CS5535/CS5536 GPIO support" 738 depends on MFD_CS5535 739 help 740 The AMD CS5535 and CS5536 southbridges support 28 GPIO pins that 741 can be used for quite a number of things. The CS5535/6 is found on 742 AMD Geode and Lemote Yeeloong devices. 743 744 If unsure, say N. 745 746config GPIO_BT8XX 747 tristate "BT8XX GPIO abuser" 748 depends on PCI && VIDEO_BT848=n 749 help 750 The BT8xx frame grabber chip has 24 GPIO pins that can be abused 751 as a cheap PCI GPIO card. 752 753 This chip can be found on Miro, Hauppauge and STB TV-cards. 754 755 The card needs to be physically altered for using it as a 756 GPIO card. For more information on how to build a GPIO card 757 from a BT8xx TV card, see the documentation file at 758 Documentation/bt8xxgpio.txt 759 760 If unsure, say N. 761 762config GPIO_AMD8111 763 tristate "AMD 8111 GPIO driver" 764 depends on PCI 765 help 766 The AMD 8111 south bridge contains 32 GPIO pins which can be used. 767 768 Note, that usually system firmware/ACPI handles GPIO pins on their 769 own and users might easily break their systems with uncarefull usage 770 of this driver! 771 772 If unsure, say N 773 774config GPIO_INTEL_MID 775 bool "Intel Mid GPIO support" 776 depends on PCI && X86 777 select GPIOLIB_IRQCHIP 778 help 779 Say Y here to support Intel Mid GPIO. 780 781config GPIO_PCH 782 tristate "Intel EG20T PCH/LAPIS Semiconductor IOH(ML7223/ML7831) GPIO" 783 depends on PCI && (X86_32 || COMPILE_TEST) 784 select GENERIC_IRQ_CHIP 785 help 786 This driver is for PCH(Platform controller Hub) GPIO of Intel Topcliff 787 which is an IOH(Input/Output Hub) for x86 embedded processor. 788 This driver can access PCH GPIO device. 789 790 This driver also can be used for LAPIS Semiconductor IOH(Input/ 791 Output Hub), ML7223 and ML7831. 792 ML7223 IOH is for MP(Media Phone) use. 793 ML7831 IOH is for general purpose use. 794 ML7223/ML7831 is companion chip for Intel Atom E6xx series. 795 ML7223/ML7831 is completely compatible for Intel EG20T PCH. 796 797config GPIO_ML_IOH 798 tristate "OKI SEMICONDUCTOR ML7213 IOH GPIO support" 799 depends on PCI 800 select GENERIC_IRQ_CHIP 801 help 802 ML7213 is companion chip for Intel Atom E6xx series. 803 This driver can be used for OKI SEMICONDUCTOR ML7213 IOH(Input/Output 804 Hub) which is for IVI(In-Vehicle Infotainment) use. 805 This driver can access the IOH's GPIO device. 806 807config GPIO_SODAVILLE 808 bool "Intel Sodaville GPIO support" 809 depends on X86 && PCI && OF 810 select GPIO_GENERIC 811 select GENERIC_IRQ_CHIP 812 help 813 Say Y here to support Intel Sodaville GPIO. 814 815config GPIO_TIMBERDALE 816 bool "Support for timberdale GPIO IP" 817 depends on MFD_TIMBERDALE 818 ---help--- 819 Add support for the GPIO IP in the timberdale FPGA. 820 821config GPIO_RDC321X 822 tristate "RDC R-321x GPIO support" 823 depends on PCI 824 select MFD_CORE 825 select MFD_RDC321X 826 help 827 Support for the RDC R321x SoC GPIOs over southbridge 828 PCI configuration space. 829 830comment "SPI GPIO expanders:" 831 832config GPIO_MAX7301 833 tristate "Maxim MAX7301 GPIO expander" 834 depends on SPI_MASTER 835 select GPIO_MAX730X 836 help 837 GPIO driver for Maxim MAX7301 SPI-based GPIO expander. 838 839config GPIO_MCP23S08 840 tristate "Microchip MCP23xxx I/O expander" 841 depends on (SPI_MASTER && !I2C) || I2C 842 help 843 SPI/I2C driver for Microchip MCP23S08/MCP23S17/MCP23008/MCP23017 844 I/O expanders. 845 This provides a GPIO interface supporting inputs and outputs. 846 The I2C versions of the chips can be used as interrupt-controller. 847 848config GPIO_MC33880 849 tristate "Freescale MC33880 high-side/low-side switch" 850 depends on SPI_MASTER 851 help 852 SPI driver for Freescale MC33880 high-side/low-side switch. 853 This provides GPIO interface supporting inputs and outputs. 854 855config GPIO_74X164 856 tristate "74x164 serial-in/parallel-out 8-bits shift register" 857 depends on SPI_MASTER && OF 858 help 859 Driver for 74x164 compatible serial-in/parallel-out 8-outputs 860 shift registers. This driver can be used to provide access 861 to more gpio outputs. 862 863comment "AC97 GPIO expanders:" 864 865config GPIO_UCB1400 866 tristate "Philips UCB1400 GPIO" 867 depends on UCB1400_CORE 868 help 869 This enables support for the Philips UCB1400 GPIO pins. 870 The UCB1400 is an AC97 audio codec. 871 872comment "LPC GPIO expanders:" 873 874config GPIO_KEMPLD 875 tristate "Kontron ETX / COMexpress GPIO" 876 depends on MFD_KEMPLD 877 help 878 This enables support for the PLD GPIO interface on some Kontron ETX 879 and COMexpress (ETXexpress) modules. 880 881 This driver can also be built as a module. If so, the module will be 882 called gpio-kempld. 883 884comment "MODULbus GPIO expanders:" 885 886config GPIO_JANZ_TTL 887 tristate "Janz VMOD-TTL Digital IO Module" 888 depends on MFD_JANZ_CMODIO 889 help 890 This enables support for the Janz VMOD-TTL Digital IO module. 891 This driver provides support for driving the pins in output 892 mode only. Input mode is not supported. 893 894config GPIO_PALMAS 895 bool "TI PALMAS series PMICs GPIO" 896 depends on MFD_PALMAS 897 help 898 Select this option to enable GPIO driver for the TI PALMAS 899 series chip family. 900 901config GPIO_TPS6586X 902 bool "TPS6586X GPIO" 903 depends on MFD_TPS6586X 904 help 905 Select this option to enable GPIO driver for the TPS6586X 906 chip family. 907 908config GPIO_TPS65910 909 bool "TPS65910 GPIO" 910 depends on MFD_TPS65910 911 help 912 Select this option to enable GPIO driver for the TPS65910 913 chip family. 914 915config GPIO_MSIC 916 bool "Intel MSIC mixed signal gpio support" 917 depends on MFD_INTEL_MSIC 918 help 919 Enable support for GPIO on intel MSIC controllers found in 920 intel MID devices 921 922config GPIO_BCM_KONA 923 bool "Broadcom Kona GPIO" 924 depends on OF_GPIO && (ARCH_BCM_MOBILE || COMPILE_TEST) 925 help 926 Turn on GPIO support for Broadcom "Kona" chips. 927 928comment "USB GPIO expanders:" 929 930config GPIO_VIPERBOARD 931 tristate "Viperboard GPIO a & b support" 932 depends on MFD_VIPERBOARD && USB 933 help 934 Say yes here to access the GPIO signals of Nano River 935 Technologies Viperboard. There are two GPIO chips on the 936 board: gpioa and gpiob. 937 See viperboard API specification and Nano 938 River Tech's viperboard.h for detailed meaning 939 of the module parameters. 940 941config GPIO_DLN2 942 tristate "Diolan DLN2 GPIO support" 943 depends on MFD_DLN2 944 select GPIOLIB_IRQCHIP 945 946 help 947 Select this option to enable GPIO driver for the Diolan DLN2 948 board. 949 950 This driver can also be built as a module. If so, the module 951 will be called gpio-dln2. 952 953endif 954