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