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_MB86S7X 201 bool "GPIO support for Fujitsu MB86S7x Platforms" 202 depends on ARCH_MB86S7X 203 help 204 Say yes here to support the GPIO controller in Fujitsu MB86S70 SoCs. 205 206config GPIO_MOXART 207 bool "MOXART GPIO support" 208 depends on ARCH_MOXART 209 select GPIO_GENERIC 210 help 211 Select this option to enable GPIO driver for 212 MOXA ART SoC devices. 213 214config GPIO_MPC5200 215 def_bool y 216 depends on PPC_MPC52xx 217 218config GPIO_MPC8XXX 219 bool "MPC512x/MPC8xxx GPIO support" 220 depends on PPC_MPC512x || PPC_MPC831x || PPC_MPC834x || PPC_MPC837x || \ 221 FSL_SOC_BOOKE || PPC_86xx 222 help 223 Say Y here if you're going to use hardware that connects to the 224 MPC512x/831x/834x/837x/8572/8610 GPIOs. 225 226config GPIO_MSM_V1 227 tristate "Qualcomm MSM GPIO v1" 228 depends on GPIOLIB && ARCH_MSM && (ARCH_MSM7X00A || ARCH_MSM7X30 || ARCH_QSD8X50) 229 help 230 Say yes here to support the GPIO interface on ARM v6 based 231 Qualcomm MSM chips. Most of the pins on the MSM can be 232 selected for GPIO, and are controlled by this driver. 233 234config GPIO_MSM_V2 235 tristate "Qualcomm MSM GPIO v2" 236 depends on GPIOLIB && OF && ARCH_QCOM 237 help 238 Say yes here to support the GPIO interface on ARM v7 based 239 Qualcomm MSM chips. Most of the pins on the MSM can be 240 selected for GPIO, and are controlled by this driver. 241 242config GPIO_MVEBU 243 def_bool y 244 depends on PLAT_ORION 245 depends on OF 246 select GPIO_GENERIC 247 select GENERIC_IRQ_CHIP 248 249config GPIO_MXC 250 def_bool y 251 depends on ARCH_MXC 252 select GPIO_GENERIC 253 select GENERIC_IRQ_CHIP 254 255config GPIO_MXS 256 def_bool y 257 depends on ARCH_MXS 258 select GPIO_GENERIC 259 select GENERIC_IRQ_CHIP 260 261config GPIO_OCTEON 262 tristate "Cavium OCTEON GPIO" 263 depends on GPIOLIB && CAVIUM_OCTEON_SOC 264 default y 265 help 266 Say yes here to support the on-chip GPIO lines on the OCTEON 267 family of SOCs. 268 269config GPIO_OMAP 270 bool "TI OMAP GPIO support" if COMPILE_TEST && !ARCH_OMAP2PLUS 271 default y if ARCH_OMAP 272 depends on ARM 273 select GENERIC_IRQ_CHIP 274 select GPIOLIB_IRQCHIP 275 help 276 Say yes here to enable GPIO support for TI OMAP SoCs. 277 278config GPIO_PL061 279 bool "PrimeCell PL061 GPIO support" 280 depends on ARM_AMBA 281 select IRQ_DOMAIN 282 select GPIOLIB_IRQCHIP 283 help 284 Say yes here to support the PrimeCell PL061 GPIO device 285 286config GPIO_PXA 287 bool "PXA GPIO support" 288 depends on ARCH_PXA || ARCH_MMP 289 help 290 Say yes here to support the PXA GPIO device 291 292config GPIO_RCAR 293 tristate "Renesas R-Car GPIO" 294 depends on ARM && (ARCH_SHMOBILE || COMPILE_TEST) 295 select GPIOLIB_IRQCHIP 296 help 297 Say yes here to support GPIO on Renesas R-Car SoCs. 298 299config GPIO_SAMSUNG 300 bool 301 depends on PLAT_SAMSUNG 302 help 303 Legacy GPIO support. Use only for platforms without support for 304 pinctrl. 305 306config GPIO_SCH311X 307 tristate "SMSC SCH311x SuperI/O GPIO" 308 help 309 Driver to enable the GPIOs found on SMSC SMSC SCH3112, SCH3114 and 310 SCH3116 "Super I/O" chipsets. 311 312 To compile this driver as a module, choose M here: the module will 313 be called gpio-sch311x. 314 315config GPIO_SPEAR_SPICS 316 bool "ST SPEAr13xx SPI Chip Select as GPIO support" 317 depends on PLAT_SPEAR 318 select GENERIC_IRQ_CHIP 319 help 320 Say yes here to support ST SPEAr SPI Chip Select as GPIO device 321 322config GPIO_STA2X11 323 bool "STA2x11/ConneXt GPIO support" 324 depends on MFD_STA2X11 325 select GENERIC_IRQ_CHIP 326 help 327 Say yes here to support the STA2x11/ConneXt GPIO device. 328 The GPIO module has 128 GPIO pins with alternate functions. 329 330config GPIO_SYSCON 331 tristate "GPIO based on SYSCON" 332 depends on MFD_SYSCON && OF 333 help 334 Say yes here to support GPIO functionality though SYSCON driver. 335 336config GPIO_TS5500 337 tristate "TS-5500 DIO blocks and compatibles" 338 depends on TS5500 || COMPILE_TEST 339 help 340 This driver supports Digital I/O exposed by pin blocks found on some 341 Technologic Systems platforms. It includes, but is not limited to, 3 342 blocks of the TS-5500: DIO1, DIO2 and the LCD port, and the TS-5600 343 LCD port. 344 345config GPIO_TZ1090 346 bool "Toumaz Xenif TZ1090 GPIO support" 347 depends on SOC_TZ1090 348 select GENERIC_IRQ_CHIP 349 default y 350 help 351 Say yes here to support Toumaz Xenif TZ1090 GPIOs. 352 353config GPIO_TZ1090_PDC 354 bool "Toumaz Xenif TZ1090 PDC GPIO support" 355 depends on SOC_TZ1090 356 default y 357 help 358 Say yes here to support Toumaz Xenif TZ1090 PDC GPIOs. 359 360config GPIO_VF610 361 def_bool y 362 depends on ARCH_MXC && SOC_VF610 363 select GPIOLIB_IRQCHIP 364 help 365 Say yes here to support Vybrid vf610 GPIOs. 366 367config GPIO_XGENE 368 bool "APM X-Gene GPIO controller support" 369 depends on ARM64 && OF_GPIO 370 help 371 This driver is to support the GPIO block within the APM X-Gene SoC 372 platform's generic flash controller. The GPIO pins are muxed with 373 the generic flash controller's address and data pins. Say yes 374 here to enable the GFC GPIO functionality. 375 376config GPIO_XGENE_SB 377 tristate "APM X-Gene GPIO standby controller support" 378 depends on ARCH_XGENE && OF_GPIO 379 select GPIO_GENERIC 380 help 381 This driver supports the GPIO block within the APM X-Gene 382 Standby Domain. Say yes here to enable the GPIO functionality. 383 384config GPIO_XILINX 385 tristate "Xilinx GPIO support" 386 depends on OF_GPIO && (PPC || MICROBLAZE || ARCH_ZYNQ || X86) 387 help 388 Say yes here to support the Xilinx FPGA GPIO device 389 390config GPIO_ZYNQ 391 tristate "Xilinx Zynq GPIO support" 392 depends on ARCH_ZYNQ 393 select GPIOLIB_IRQCHIP 394 help 395 Say yes here to support Xilinx Zynq GPIO controller. 396 397config GPIO_XTENSA 398 bool "Xtensa GPIO32 support" 399 depends on XTENSA 400 depends on HAVE_XTENSA_GPIO32 401 depends on !SMP 402 help 403 Say yes here to support the Xtensa internal GPIO32 IMPWIRE (input) 404 and EXPSTATE (output) ports 405 406config GPIO_VR41XX 407 tristate "NEC VR4100 series General-purpose I/O Uint support" 408 depends on CPU_VR41XX 409 help 410 Say yes here to support the NEC VR4100 series General-purpose I/O Uint 411 412config GPIO_SCH 413 tristate "Intel SCH/TunnelCreek/Centerton/Quark X1000 GPIO" 414 depends on PCI && X86 415 select MFD_CORE 416 select LPC_SCH 417 help 418 Say yes here to support GPIO interface on Intel Poulsbo SCH, 419 Intel Tunnel Creek processor, Intel Centerton processor or 420 Intel Quark X1000 SoC. 421 422 The Intel SCH contains a total of 14 GPIO pins. Ten GPIOs are 423 powered by the core power rail and are turned off during sleep 424 modes (S3 and higher). The remaining four GPIOs are powered by 425 the Intel SCH suspend power supply. These GPIOs remain 426 active during S3. The suspend powered GPIOs can be used to wake the 427 system from the Suspend-to-RAM state. 428 429 The Intel Tunnel Creek processor has 5 GPIOs powered by the 430 core power rail and 9 from suspend power supply. 431 432 The Intel Centerton processor has a total of 30 GPIO pins. 433 Twenty-one are powered by the core power rail and 9 from the 434 suspend power supply. 435 436 The Intel Quark X1000 SoC has 2 GPIOs powered by the core 437 power well and 6 from the suspend power well. 438 439config GPIO_ICH 440 tristate "Intel ICH GPIO" 441 depends on PCI && X86 442 select MFD_CORE 443 select LPC_ICH 444 help 445 Say yes here to support the GPIO functionality of a number of Intel 446 ICH-based chipsets. Currently supported devices: ICH6, ICH7, ICH8 447 ICH9, ICH10, Series 5/3400 (eg Ibex Peak), Series 6/C200 (eg 448 Cougar Point), NM10 (Tiger Point), and 3100 (Whitmore Lake). 449 450 If unsure, say N. 451 452config GPIO_IOP 453 tristate "Intel IOP GPIO" 454 depends on ARM && (ARCH_IOP32X || ARCH_IOP33X) 455 help 456 Say yes here to support the GPIO functionality of a number of Intel 457 IOP32X or IOP33X. 458 459 If unsure, say N. 460 461config GPIO_VX855 462 tristate "VIA VX855/VX875 GPIO" 463 depends on PCI 464 select MFD_CORE 465 select MFD_VX855 466 help 467 Support access to the VX855/VX875 GPIO lines through the gpio library. 468 469 This driver provides common support for accessing the device, 470 additional drivers must be enabled in order to use the 471 functionality of the device. 472 473config GPIO_GE_FPGA 474 bool "GE FPGA based GPIO" 475 depends on GE_FPGA 476 select GPIO_GENERIC 477 help 478 Support for common GPIO functionality provided on some GE Single Board 479 Computers. 480 481 This driver provides basic support (configure as input or output, read 482 and write pin state) for GPIO implemented in a number of GE single 483 board computers. 484 485config GPIO_LYNXPOINT 486 tristate "Intel Lynxpoint GPIO support" 487 depends on ACPI && X86 488 select GPIOLIB_IRQCHIP 489 help 490 driver for GPIO functionality on Intel Lynxpoint PCH chipset 491 Requires ACPI device enumeration code to set up a platform device. 492 493config GPIO_GRGPIO 494 tristate "Aeroflex Gaisler GRGPIO support" 495 depends on OF 496 select GPIO_GENERIC 497 select IRQ_DOMAIN 498 help 499 Select this to support Aeroflex Gaisler GRGPIO cores from the GRLIB 500 VHDL IP core library. 501 502config GPIO_TB10X 503 bool 504 select GENERIC_IRQ_CHIP 505 select OF_GPIO 506 507comment "I2C GPIO expanders:" 508 509config GPIO_ARIZONA 510 tristate "Wolfson Microelectronics Arizona class devices" 511 depends on MFD_ARIZONA 512 help 513 Support for GPIOs on Wolfson Arizona class devices. 514 515config GPIO_CRYSTAL_COVE 516 tristate "GPIO support for Crystal Cove PMIC" 517 depends on INTEL_SOC_PMIC 518 select GPIOLIB_IRQCHIP 519 help 520 Support for GPIO pins on Crystal Cove PMIC. 521 522 Say Yes if you have a Intel SoC based tablet with Crystal Cove PMIC 523 inside. 524 525 This driver can also be built as a module. If so, the module will be 526 called gpio-crystalcove. 527 528config GPIO_LP3943 529 tristate "TI/National Semiconductor LP3943 GPIO expander" 530 depends on MFD_LP3943 531 help 532 GPIO driver for LP3943 MFD. 533 LP3943 can be used as a GPIO expander which provides up to 16 GPIOs. 534 Open drain outputs are required for this usage. 535 536config GPIO_MAX7300 537 tristate "Maxim MAX7300 GPIO expander" 538 depends on I2C 539 select GPIO_MAX730X 540 help 541 GPIO driver for Maxim MAX7300 I2C-based GPIO expander. 542 543config GPIO_MAX732X 544 tristate "MAX7319, MAX7320-7327 I2C Port Expanders" 545 depends on I2C 546 select IRQ_DOMAIN 547 help 548 Say yes here to support the MAX7319, MAX7320-7327 series of I2C 549 Port Expanders. Each IO port on these chips has a fixed role of 550 Input (designated by 'I'), Push-Pull Output ('O'), or Open-Drain 551 Input and Output (designed by 'P'). The combinations are listed 552 below: 553 554 8 bits: max7319 (8I), max7320 (8O), max7321 (8P), 555 max7322 (4I4O), max7323 (4P4O) 556 557 16 bits: max7324 (8I8O), max7325 (8P8O), 558 max7326 (4I12O), max7327 (4P12O) 559 560 Board setup code must specify the model to use, and the start 561 number for these GPIOs. 562 563config GPIO_MAX732X_IRQ 564 bool "Interrupt controller support for MAX732x" 565 depends on GPIO_MAX732X=y 566 help 567 Say yes here to enable the max732x to be used as an interrupt 568 controller. It requires the driver to be built in the kernel. 569 570config GPIO_MC9S08DZ60 571 bool "MX35 3DS BOARD MC9S08DZ60 GPIO functions" 572 depends on I2C=y && MACH_MX35_3DS 573 help 574 Select this to enable the MC9S08DZ60 GPIO driver 575 576config GPIO_PCA953X 577 tristate "PCA95[357]x, PCA9698, TCA64xx, and MAX7310 I/O ports" 578 depends on I2C 579 help 580 Say yes here to provide access to several register-oriented 581 SMBus I/O expanders, made mostly by NXP or TI. Compatible 582 models include: 583 584 4 bits: pca9536, pca9537 585 586 8 bits: max7310, max7315, pca6107, pca9534, pca9538, pca9554, 587 pca9556, pca9557, pca9574, tca6408, xra1202 588 589 16 bits: max7312, max7313, pca9535, pca9539, pca9555, pca9575, 590 tca6416 591 592 24 bits: tca6424 593 594 40 bits: pca9505, pca9698 595 596config GPIO_PCA953X_IRQ 597 bool "Interrupt controller support for PCA953x" 598 depends on GPIO_PCA953X=y 599 select GPIOLIB_IRQCHIP 600 help 601 Say yes here to enable the pca953x to be used as an interrupt 602 controller. It requires the driver to be built in the kernel. 603 604config GPIO_PCF857X 605 tristate "PCF857x, PCA{85,96}7x, and MAX732[89] I2C GPIO expanders" 606 depends on I2C 607 select IRQ_DOMAIN 608 help 609 Say yes here to provide access to most "quasi-bidirectional" I2C 610 GPIO expanders used for additional digital outputs or inputs. 611 Most of these parts are from NXP, though TI is a second source for 612 some of them. Compatible models include: 613 614 8 bits: pcf8574, pcf8574a, pca8574, pca8574a, 615 pca9670, pca9672, pca9674, pca9674a, 616 max7328, max7329 617 618 16 bits: pcf8575, pcf8575c, pca8575, 619 pca9671, pca9673, pca9675 620 621 Your board setup code will need to declare the expanders in 622 use, and assign numbers to the GPIOs they expose. Those GPIOs 623 can then be used from drivers and other kernel code, just like 624 other GPIOs, but only accessible from task contexts. 625 626 This driver provides an in-kernel interface to those GPIOs using 627 platform-neutral GPIO calls. 628 629config GPIO_RC5T583 630 bool "RICOH RC5T583 GPIO" 631 depends on MFD_RC5T583 632 help 633 Select this option to enable GPIO driver for the Ricoh RC5T583 634 chip family. 635 This driver provides the support for driving/reading the gpio pins 636 of RC5T583 device through standard gpio library. 637 638config GPIO_SX150X 639 bool "Semtech SX150x I2C GPIO expander" 640 depends on I2C=y 641 select GPIOLIB_IRQCHIP 642 default n 643 help 644 Say yes here to provide support for Semtech SX150-series I2C 645 GPIO expanders. Compatible models include: 646 647 8 bits: sx1508q 648 16 bits: sx1509q 649 650config GPIO_STMPE 651 bool "STMPE GPIOs" 652 depends on MFD_STMPE 653 depends on OF_GPIO 654 select GPIOLIB_IRQCHIP 655 help 656 This enables support for the GPIOs found on the STMPE I/O 657 Expanders. 658 659config GPIO_STP_XWAY 660 bool "XWAY STP GPIOs" 661 depends on SOC_XWAY 662 help 663 This enables support for the Serial To Parallel (STP) unit found on 664 XWAY SoC. The STP allows the SoC to drive a shift registers cascade, 665 that can be up to 24 bit. This peripheral is aimed at driving leds. 666 Some of the gpios/leds can be auto updated by the soc with dsl and 667 phy status. 668 669config GPIO_TC3589X 670 bool "TC3589X GPIOs" 671 depends on MFD_TC3589X 672 select GPIOLIB_IRQCHIP 673 help 674 This enables support for the GPIOs found on the TC3589X 675 I/O Expander. 676 677config GPIO_TPS65912 678 tristate "TI TPS65912 GPIO" 679 depends on (MFD_TPS65912_I2C || MFD_TPS65912_SPI) 680 help 681 This driver supports TPS65912 gpio chip 682 683config GPIO_TWL4030 684 tristate "TWL4030, TWL5030, and TPS659x0 GPIOs" 685 depends on TWL4030_CORE 686 help 687 Say yes here to access the GPIO signals of various multi-function 688 power management chips from Texas Instruments. 689 690config GPIO_TWL6040 691 tristate "TWL6040 GPO" 692 depends on TWL6040_CORE 693 help 694 Say yes here to access the GPO signals of twl6040 695 audio chip from Texas Instruments. 696 697config GPIO_WM831X 698 tristate "WM831x GPIOs" 699 depends on MFD_WM831X 700 help 701 Say yes here to access the GPIO signals of WM831x power management 702 chips from Wolfson Microelectronics. 703 704config GPIO_WM8350 705 tristate "WM8350 GPIOs" 706 depends on MFD_WM8350 707 help 708 Say yes here to access the GPIO signals of WM8350 power management 709 chips from Wolfson Microelectronics. 710 711config GPIO_WM8994 712 tristate "WM8994 GPIOs" 713 depends on MFD_WM8994 714 help 715 Say yes here to access the GPIO signals of WM8994 audio hub 716 CODECs from Wolfson Microelectronics. 717 718config GPIO_ADP5520 719 tristate "GPIO Support for ADP5520 PMIC" 720 depends on PMIC_ADP5520 721 help 722 This option enables support for on-chip GPIO found 723 on Analog Devices ADP5520 PMICs. 724 725config GPIO_ADP5588 726 tristate "ADP5588 I2C GPIO expander" 727 depends on I2C 728 help 729 This option enables support for 18 GPIOs found 730 on Analog Devices ADP5588 GPIO Expanders. 731 732config GPIO_ADP5588_IRQ 733 bool "Interrupt controller support for ADP5588" 734 depends on GPIO_ADP5588=y 735 help 736 Say yes here to enable the adp5588 to be used as an interrupt 737 controller. It requires the driver to be built in the kernel. 738 739config GPIO_ADNP 740 tristate "Avionic Design N-bit GPIO expander" 741 depends on I2C && OF_GPIO 742 select GPIOLIB_IRQCHIP 743 help 744 This option enables support for N GPIOs found on Avionic Design 745 I2C GPIO expanders. The register space will be extended by powers 746 of two, so the controller will need to accommodate for that. For 747 example: if a controller provides 48 pins, 6 registers will be 748 enough to represent all pins, but the driver will assume a 749 register layout for 64 pins (8 registers). 750 751comment "PCI GPIO expanders:" 752 753config GPIO_CS5535 754 tristate "AMD CS5535/CS5536 GPIO support" 755 depends on MFD_CS5535 756 help 757 The AMD CS5535 and CS5536 southbridges support 28 GPIO pins that 758 can be used for quite a number of things. The CS5535/6 is found on 759 AMD Geode and Lemote Yeeloong devices. 760 761 If unsure, say N. 762 763config GPIO_BT8XX 764 tristate "BT8XX GPIO abuser" 765 depends on PCI && VIDEO_BT848=n 766 help 767 The BT8xx frame grabber chip has 24 GPIO pins that can be abused 768 as a cheap PCI GPIO card. 769 770 This chip can be found on Miro, Hauppauge and STB TV-cards. 771 772 The card needs to be physically altered for using it as a 773 GPIO card. For more information on how to build a GPIO card 774 from a BT8xx TV card, see the documentation file at 775 Documentation/bt8xxgpio.txt 776 777 If unsure, say N. 778 779config GPIO_AMD8111 780 tristate "AMD 8111 GPIO driver" 781 depends on PCI 782 help 783 The AMD 8111 south bridge contains 32 GPIO pins which can be used. 784 785 Note, that usually system firmware/ACPI handles GPIO pins on their 786 own and users might easily break their systems with uncarefull usage 787 of this driver! 788 789 If unsure, say N 790 791config GPIO_INTEL_MID 792 bool "Intel Mid GPIO support" 793 depends on PCI && X86 794 select GPIOLIB_IRQCHIP 795 help 796 Say Y here to support Intel Mid GPIO. 797 798config GPIO_PCH 799 tristate "Intel EG20T PCH/LAPIS Semiconductor IOH(ML7223/ML7831) GPIO" 800 depends on PCI && (X86_32 || COMPILE_TEST) 801 select GENERIC_IRQ_CHIP 802 help 803 This driver is for PCH(Platform controller Hub) GPIO of Intel Topcliff 804 which is an IOH(Input/Output Hub) for x86 embedded processor. 805 This driver can access PCH GPIO device. 806 807 This driver also can be used for LAPIS Semiconductor IOH(Input/ 808 Output Hub), ML7223 and ML7831. 809 ML7223 IOH is for MP(Media Phone) use. 810 ML7831 IOH is for general purpose use. 811 ML7223/ML7831 is companion chip for Intel Atom E6xx series. 812 ML7223/ML7831 is completely compatible for Intel EG20T PCH. 813 814config GPIO_ML_IOH 815 tristate "OKI SEMICONDUCTOR ML7213 IOH GPIO support" 816 depends on PCI 817 select GENERIC_IRQ_CHIP 818 help 819 ML7213 is companion chip for Intel Atom E6xx series. 820 This driver can be used for OKI SEMICONDUCTOR ML7213 IOH(Input/Output 821 Hub) which is for IVI(In-Vehicle Infotainment) use. 822 This driver can access the IOH's GPIO device. 823 824config GPIO_SODAVILLE 825 bool "Intel Sodaville GPIO support" 826 depends on X86 && PCI && OF 827 select GPIO_GENERIC 828 select GENERIC_IRQ_CHIP 829 help 830 Say Y here to support Intel Sodaville GPIO. 831 832config GPIO_TIMBERDALE 833 bool "Support for timberdale GPIO IP" 834 depends on MFD_TIMBERDALE 835 ---help--- 836 Add support for the GPIO IP in the timberdale FPGA. 837 838config GPIO_RDC321X 839 tristate "RDC R-321x GPIO support" 840 depends on PCI 841 select MFD_CORE 842 select MFD_RDC321X 843 help 844 Support for the RDC R321x SoC GPIOs over southbridge 845 PCI configuration space. 846 847comment "SPI GPIO expanders:" 848 849config GPIO_MAX7301 850 tristate "Maxim MAX7301 GPIO expander" 851 depends on SPI_MASTER 852 select GPIO_MAX730X 853 help 854 GPIO driver for Maxim MAX7301 SPI-based GPIO expander. 855 856config GPIO_MCP23S08 857 tristate "Microchip MCP23xxx I/O expander" 858 depends on (SPI_MASTER && !I2C) || I2C 859 help 860 SPI/I2C driver for Microchip MCP23S08/MCP23S17/MCP23008/MCP23017 861 I/O expanders. 862 This provides a GPIO interface supporting inputs and outputs. 863 The I2C versions of the chips can be used as interrupt-controller. 864 865config GPIO_MC33880 866 tristate "Freescale MC33880 high-side/low-side switch" 867 depends on SPI_MASTER 868 help 869 SPI driver for Freescale MC33880 high-side/low-side switch. 870 This provides GPIO interface supporting inputs and outputs. 871 872config GPIO_74X164 873 tristate "74x164 serial-in/parallel-out 8-bits shift register" 874 depends on SPI_MASTER && OF 875 help 876 Driver for 74x164 compatible serial-in/parallel-out 8-outputs 877 shift registers. This driver can be used to provide access 878 to more gpio outputs. 879 880comment "AC97 GPIO expanders:" 881 882config GPIO_UCB1400 883 tristate "Philips UCB1400 GPIO" 884 depends on UCB1400_CORE 885 help 886 This enables support for the Philips UCB1400 GPIO pins. 887 The UCB1400 is an AC97 audio codec. 888 889comment "LPC GPIO expanders:" 890 891config GPIO_KEMPLD 892 tristate "Kontron ETX / COMexpress GPIO" 893 depends on MFD_KEMPLD 894 help 895 This enables support for the PLD GPIO interface on some Kontron ETX 896 and COMexpress (ETXexpress) modules. 897 898 This driver can also be built as a module. If so, the module will be 899 called gpio-kempld. 900 901comment "MODULbus GPIO expanders:" 902 903config GPIO_JANZ_TTL 904 tristate "Janz VMOD-TTL Digital IO Module" 905 depends on MFD_JANZ_CMODIO 906 help 907 This enables support for the Janz VMOD-TTL Digital IO module. 908 This driver provides support for driving the pins in output 909 mode only. Input mode is not supported. 910 911config GPIO_PALMAS 912 bool "TI PALMAS series PMICs GPIO" 913 depends on MFD_PALMAS 914 help 915 Select this option to enable GPIO driver for the TI PALMAS 916 series chip family. 917 918config GPIO_TPS6586X 919 bool "TPS6586X GPIO" 920 depends on MFD_TPS6586X 921 help 922 Select this option to enable GPIO driver for the TPS6586X 923 chip family. 924 925config GPIO_TPS65910 926 bool "TPS65910 GPIO" 927 depends on MFD_TPS65910 928 help 929 Select this option to enable GPIO driver for the TPS65910 930 chip family. 931 932config GPIO_MSIC 933 bool "Intel MSIC mixed signal gpio support" 934 depends on MFD_INTEL_MSIC 935 help 936 Enable support for GPIO on intel MSIC controllers found in 937 intel MID devices 938 939config GPIO_BCM_KONA 940 bool "Broadcom Kona GPIO" 941 depends on OF_GPIO && (ARCH_BCM_MOBILE || COMPILE_TEST) 942 help 943 Turn on GPIO support for Broadcom "Kona" chips. 944 945comment "USB GPIO expanders:" 946 947config GPIO_VIPERBOARD 948 tristate "Viperboard GPIO a & b support" 949 depends on MFD_VIPERBOARD && USB 950 help 951 Say yes here to access the GPIO signals of Nano River 952 Technologies Viperboard. There are two GPIO chips on the 953 board: gpioa and gpiob. 954 See viperboard API specification and Nano 955 River Tech's viperboard.h for detailed meaning 956 of the module parameters. 957 958config GPIO_DLN2 959 tristate "Diolan DLN2 GPIO support" 960 depends on MFD_DLN2 961 select GPIOLIB_IRQCHIP 962 963 help 964 Select this option to enable GPIO driver for the Diolan DLN2 965 board. 966 967 This driver can also be built as a module. If so, the module 968 will be called gpio-dln2. 969 970endif 971