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 93# This symbol is selected by both I2C and SPI expanders 94config GPIO_MAX730X 95 tristate 96 97menu "Memory mapped GPIO drivers" 98 99config GPIO_74XX_MMIO 100 tristate "GPIO driver for 74xx-ICs with MMIO access" 101 depends on OF_GPIO 102 select GPIO_GENERIC 103 help 104 Say yes here to support GPIO functionality for 74xx-compatible ICs 105 with MMIO access. Compatible models include: 106 1 bit: 741G125 (Input), 741G74 (Output) 107 2 bits: 742G125 (Input), 7474 (Output) 108 4 bits: 74125 (Input), 74175 (Output) 109 6 bits: 74365 (Input), 74174 (Output) 110 8 bits: 74244 (Input), 74273 (Output) 111 16 bits: 741624 (Input), 7416374 (Output) 112 113config GPIO_ALTERA 114 tristate "Altera GPIO" 115 depends on OF_GPIO 116 select GPIOLIB_IRQCHIP 117 help 118 Say Y or M here to build support for the Altera PIO device. 119 120 If driver is built as a module it will be called gpio-altera. 121 122config GPIO_AMDPT 123 tristate "AMD Promontory GPIO support" 124 depends on ACPI 125 help 126 driver for GPIO functionality on Promontory IOHub 127 Require ACPI ASL code to enumerate as a platform device. 128 129config GPIO_BCM_KONA 130 bool "Broadcom Kona GPIO" 131 depends on OF_GPIO && (ARCH_BCM_MOBILE || COMPILE_TEST) 132 help 133 Turn on GPIO support for Broadcom "Kona" chips. 134 135config GPIO_BRCMSTB 136 tristate "BRCMSTB GPIO support" 137 default y if (ARCH_BRCMSTB || BMIPS_GENERIC) 138 depends on OF_GPIO && (ARCH_BRCMSTB || BMIPS_GENERIC || COMPILE_TEST) 139 select GPIO_GENERIC 140 select GPIOLIB_IRQCHIP 141 help 142 Say yes here to enable GPIO support for Broadcom STB (BCM7XXX) SoCs. 143 144config GPIO_CLPS711X 145 tristate "CLPS711X GPIO support" 146 depends on ARCH_CLPS711X || COMPILE_TEST 147 select GPIO_GENERIC 148 help 149 Say yes here to support GPIO on CLPS711X SoCs. 150 151config GPIO_DAVINCI 152 bool "TI Davinci/Keystone GPIO support" 153 default y if ARCH_DAVINCI 154 depends on ARM && (ARCH_DAVINCI || ARCH_KEYSTONE) 155 help 156 Say yes here to enable GPIO support for TI Davinci/Keystone SoCs. 157 158config GPIO_DWAPB 159 tristate "Synopsys DesignWare APB GPIO driver" 160 select GPIO_GENERIC 161 select GENERIC_IRQ_CHIP 162 help 163 Say Y or M here to build support for the Synopsys DesignWare APB 164 GPIO block. 165 166config GPIO_EM 167 tristate "Emma Mobile GPIO" 168 depends on ARM && OF_GPIO 169 help 170 Say yes here to support GPIO on Renesas Emma Mobile SoCs. 171 172config GPIO_EP93XX 173 def_bool y 174 depends on ARCH_EP93XX 175 select GPIO_GENERIC 176 177config GPIO_ETRAXFS 178 bool "Axis ETRAX FS General I/O" 179 depends on CRIS || COMPILE_TEST 180 depends on OF 181 select GPIO_GENERIC 182 select GPIOLIB_IRQCHIP 183 help 184 Say yes here to support the GPIO controller on Axis ETRAX FS SoCs. 185 186config GPIO_GE_FPGA 187 bool "GE FPGA based GPIO" 188 depends on GE_FPGA 189 select GPIO_GENERIC 190 help 191 Support for common GPIO functionality provided on some GE Single Board 192 Computers. 193 194 This driver provides basic support (configure as input or output, read 195 and write pin state) for GPIO implemented in a number of GE single 196 board computers. 197 198config GPIO_GENERIC_PLATFORM 199 tristate "Generic memory-mapped GPIO controller support (MMIO platform device)" 200 select GPIO_GENERIC 201 help 202 Say yes here to support basic platform_device memory-mapped GPIO controllers. 203 204config GPIO_GRGPIO 205 tristate "Aeroflex Gaisler GRGPIO support" 206 depends on OF 207 select GPIO_GENERIC 208 select IRQ_DOMAIN 209 help 210 Select this to support Aeroflex Gaisler GRGPIO cores from the GRLIB 211 VHDL IP core library. 212 213config GPIO_ICH 214 tristate "Intel ICH GPIO" 215 depends on PCI && X86 216 select MFD_CORE 217 select LPC_ICH 218 help 219 Say yes here to support the GPIO functionality of a number of Intel 220 ICH-based chipsets. Currently supported devices: ICH6, ICH7, ICH8 221 ICH9, ICH10, Series 5/3400 (eg Ibex Peak), Series 6/C200 (eg 222 Cougar Point), NM10 (Tiger Point), and 3100 (Whitmore Lake). 223 224 If unsure, say N. 225 226config GPIO_IOP 227 tristate "Intel IOP GPIO" 228 depends on ARM && (ARCH_IOP32X || ARCH_IOP33X) 229 help 230 Say yes here to support the GPIO functionality of a number of Intel 231 IOP32X or IOP33X. 232 233 If unsure, say N. 234 235config GPIO_LOONGSON 236 bool "Loongson-2/3 GPIO support" 237 depends on CPU_LOONGSON2 || CPU_LOONGSON3 238 help 239 driver for GPIO functionality on Loongson-2F/3A/3B processors. 240 241config GPIO_LPC18XX 242 bool "NXP LPC18XX/43XX GPIO support" 243 default y if ARCH_LPC18XX 244 depends on OF_GPIO && (ARCH_LPC18XX || COMPILE_TEST) 245 help 246 Select this option to enable GPIO driver for 247 NXP LPC18XX/43XX devices. 248 249config GPIO_LYNXPOINT 250 tristate "Intel Lynxpoint GPIO support" 251 depends on ACPI && X86 252 select GPIOLIB_IRQCHIP 253 help 254 driver for GPIO functionality on Intel Lynxpoint PCH chipset 255 Requires ACPI device enumeration code to set up a platform device. 256 257config GPIO_MB86S7X 258 bool "GPIO support for Fujitsu MB86S7x Platforms" 259 depends on ARCH_MB86S7X 260 help 261 Say yes here to support the GPIO controller in Fujitsu MB86S70 SoCs. 262 263config GPIO_MM_LANTIQ 264 bool "Lantiq Memory mapped GPIOs" 265 depends on LANTIQ && SOC_XWAY 266 help 267 This enables support for memory mapped GPIOs on the External Bus Unit 268 (EBU) found on Lantiq SoCs. The gpios are output only as they are 269 created by attaching a 16bit latch to the bus. 270 271config GPIO_MOXART 272 bool "MOXART GPIO support" 273 depends on ARCH_MOXART 274 select GPIO_GENERIC 275 help 276 Select this option to enable GPIO driver for 277 MOXA ART SoC devices. 278 279config GPIO_MPC5200 280 def_bool y 281 depends on PPC_MPC52xx 282 283config GPIO_MPC8XXX 284 bool "MPC512x/MPC8xxx GPIO support" 285 depends on PPC_MPC512x || PPC_MPC831x || PPC_MPC834x || PPC_MPC837x || \ 286 FSL_SOC_BOOKE || PPC_86xx 287 help 288 Say Y here if you're going to use hardware that connects to the 289 MPC512x/831x/834x/837x/8572/8610 GPIOs. 290 291config GPIO_MVEBU 292 def_bool y 293 depends on PLAT_ORION 294 depends on OF 295 select GENERIC_IRQ_CHIP 296 297config GPIO_MXC 298 def_bool y 299 depends on ARCH_MXC 300 select GPIO_GENERIC 301 select GENERIC_IRQ_CHIP 302 303config GPIO_MXS 304 def_bool y 305 depends on ARCH_MXS 306 select GPIO_GENERIC 307 select GENERIC_IRQ_CHIP 308 309config GPIO_OCTEON 310 tristate "Cavium OCTEON GPIO" 311 depends on GPIOLIB && CAVIUM_OCTEON_SOC 312 default y 313 help 314 Say yes here to support the on-chip GPIO lines on the OCTEON 315 family of SOCs. 316 317config GPIO_OMAP 318 tristate "TI OMAP GPIO support" if ARCH_OMAP2PLUS || COMPILE_TEST 319 default y if ARCH_OMAP 320 depends on ARM 321 select GENERIC_IRQ_CHIP 322 select GPIOLIB_IRQCHIP 323 help 324 Say yes here to enable GPIO support for TI OMAP SoCs. 325 326config GPIO_PL061 327 bool "PrimeCell PL061 GPIO support" 328 depends on ARM_AMBA 329 select IRQ_DOMAIN 330 select GPIOLIB_IRQCHIP 331 help 332 Say yes here to support the PrimeCell PL061 GPIO device 333 334config GPIO_PXA 335 bool "PXA GPIO support" 336 depends on ARCH_PXA || ARCH_MMP 337 help 338 Say yes here to support the PXA GPIO device 339 340config GPIO_RCAR 341 tristate "Renesas R-Car GPIO" 342 depends on ARCH_SHMOBILE || COMPILE_TEST 343 select GPIOLIB_IRQCHIP 344 help 345 Say yes here to support GPIO on Renesas R-Car SoCs. 346 347config GPIO_SPEAR_SPICS 348 bool "ST SPEAr13xx SPI Chip Select as GPIO support" 349 depends on PLAT_SPEAR 350 select GENERIC_IRQ_CHIP 351 help 352 Say yes here to support ST SPEAr SPI Chip Select as GPIO device 353 354config GPIO_STA2X11 355 bool "STA2x11/ConneXt GPIO support" 356 depends on MFD_STA2X11 357 select GENERIC_IRQ_CHIP 358 help 359 Say yes here to support the STA2x11/ConneXt GPIO device. 360 The GPIO module has 128 GPIO pins with alternate functions. 361 362config GPIO_STP_XWAY 363 bool "XWAY STP GPIOs" 364 depends on SOC_XWAY 365 help 366 This enables support for the Serial To Parallel (STP) unit found on 367 XWAY SoC. The STP allows the SoC to drive a shift registers cascade, 368 that can be up to 24 bit. This peripheral is aimed at driving leds. 369 Some of the gpios/leds can be auto updated by the soc with dsl and 370 phy status. 371 372config GPIO_SYSCON 373 tristate "GPIO based on SYSCON" 374 depends on MFD_SYSCON && OF 375 help 376 Say yes here to support GPIO functionality though SYSCON driver. 377 378config GPIO_TB10X 379 bool 380 select GENERIC_IRQ_CHIP 381 select OF_GPIO 382 383config GPIO_TZ1090 384 bool "Toumaz Xenif TZ1090 GPIO support" 385 depends on SOC_TZ1090 386 select GENERIC_IRQ_CHIP 387 default y 388 help 389 Say yes here to support Toumaz Xenif TZ1090 GPIOs. 390 391config GPIO_TZ1090_PDC 392 bool "Toumaz Xenif TZ1090 PDC GPIO support" 393 depends on SOC_TZ1090 394 default y 395 help 396 Say yes here to support Toumaz Xenif TZ1090 PDC GPIOs. 397 398config GPIO_VF610 399 def_bool y 400 depends on ARCH_MXC && SOC_VF610 401 select GPIOLIB_IRQCHIP 402 help 403 Say yes here to support Vybrid vf610 GPIOs. 404 405config GPIO_VR41XX 406 tristate "NEC VR4100 series General-purpose I/O Uint support" 407 depends on CPU_VR41XX 408 help 409 Say yes here to support the NEC VR4100 series General-purpose I/O Uint 410 411config GPIO_VX855 412 tristate "VIA VX855/VX875 GPIO" 413 depends on PCI 414 select MFD_CORE 415 select MFD_VX855 416 help 417 Support access to the VX855/VX875 GPIO lines through the gpio library. 418 419 This driver provides common support for accessing the device, 420 additional drivers must be enabled in order to use the 421 functionality of the device. 422 423config GPIO_XGENE 424 bool "APM X-Gene GPIO controller support" 425 depends on ARM64 && OF_GPIO 426 help 427 This driver is to support the GPIO block within the APM X-Gene SoC 428 platform's generic flash controller. The GPIO pins are muxed with 429 the generic flash controller's address and data pins. Say yes 430 here to enable the GFC GPIO functionality. 431 432config GPIO_XGENE_SB 433 tristate "APM X-Gene GPIO standby controller support" 434 depends on ARCH_XGENE && OF_GPIO 435 select GPIO_GENERIC 436 help 437 This driver supports the GPIO block within the APM X-Gene 438 Standby Domain. Say yes here to enable the GPIO functionality. 439 440config GPIO_XILINX 441 tristate "Xilinx GPIO support" 442 depends on OF_GPIO 443 help 444 Say yes here to support the Xilinx FPGA GPIO device 445 446config GPIO_XLP 447 tristate "Netlogic XLP GPIO support" 448 depends on CPU_XLP && OF_GPIO 449 select GPIOLIB_IRQCHIP 450 help 451 This driver provides support for GPIO interface on Netlogic XLP MIPS64 452 SoCs. Currently supported XLP variants are XLP8XX, XLP3XX, XLP2XX, 453 XLP9XX and XLP5XX. 454 455 If unsure, say N. 456 457config GPIO_XTENSA 458 bool "Xtensa GPIO32 support" 459 depends on XTENSA 460 depends on HAVE_XTENSA_GPIO32 461 depends on !SMP 462 help 463 Say yes here to support the Xtensa internal GPIO32 IMPWIRE (input) 464 and EXPSTATE (output) ports 465 466config GPIO_ZEVIO 467 bool "LSI ZEVIO SoC memory mapped GPIOs" 468 depends on ARM && OF_GPIO 469 help 470 Say yes here to support the GPIO controller in LSI ZEVIO SoCs. 471 472config GPIO_ZYNQ 473 tristate "Xilinx Zynq GPIO support" 474 depends on ARCH_ZYNQ || ARCH_ZYNQMP 475 select GPIOLIB_IRQCHIP 476 help 477 Say yes here to support Xilinx Zynq GPIO controller. 478 479config GPIO_ZX 480 bool "ZTE ZX GPIO support" 481 select GPIOLIB_IRQCHIP 482 help 483 Say yes here to support the GPIO device on ZTE ZX SoCs. 484 485endmenu 486 487menu "Port-mapped I/O GPIO drivers" 488 depends on X86 # Unconditional I/O space access 489 490config GPIO_104_IDIO_16 491 tristate "ACCES 104-IDIO-16 GPIO support" 492 select GPIOLIB_IRQCHIP 493 help 494 Enables GPIO support for the ACCES 104-IDIO-16 family. The base port 495 address for the device may be set via the idio_16_base module 496 parameter. The interrupt line number for the device may be set via the 497 idio_16_irq module parameter. 498 499config GPIO_104_IDI_48 500 tristate "ACCES 104-IDI-48 GPIO support" 501 select GPIOLIB_IRQCHIP 502 help 503 Enables GPIO support for the ACCES 104-IDI-48 family. The base port 504 address for the device may be configured via the idi_48_base module 505 parameter. The interrupt line number for the device may be configured 506 via the idi_48_irq module parameter. 507 508config GPIO_F7188X 509 tristate "F71869, F71869A, F71882FG and F71889F GPIO support" 510 help 511 This option enables support for GPIOs found on Fintek Super-I/O 512 chips F71869, F71869A, F71882FG and F71889F. 513 514 To compile this driver as a module, choose M here: the module will 515 be called f7188x-gpio. 516 517config GPIO_IT87 518 tristate "IT87xx GPIO support" 519 help 520 Say yes here to support GPIO functionality of IT87xx Super I/O chips. 521 522 This driver is tested with ITE IT8728 and IT8732 Super I/O chips, and 523 supports the IT8761E Super I/O chip as well. 524 525 To compile this driver as a module, choose M here: the module will 526 be called gpio_it87 527 528config GPIO_SCH 529 tristate "Intel SCH/TunnelCreek/Centerton/Quark X1000 GPIO" 530 depends on PCI 531 select MFD_CORE 532 select LPC_SCH 533 help 534 Say yes here to support GPIO interface on Intel Poulsbo SCH, 535 Intel Tunnel Creek processor, Intel Centerton processor or 536 Intel Quark X1000 SoC. 537 538 The Intel SCH contains a total of 14 GPIO pins. Ten GPIOs are 539 powered by the core power rail and are turned off during sleep 540 modes (S3 and higher). The remaining four GPIOs are powered by 541 the Intel SCH suspend power supply. These GPIOs remain 542 active during S3. The suspend powered GPIOs can be used to wake the 543 system from the Suspend-to-RAM state. 544 545 The Intel Tunnel Creek processor has 5 GPIOs powered by the 546 core power rail and 9 from suspend power supply. 547 548 The Intel Centerton processor has a total of 30 GPIO pins. 549 Twenty-one are powered by the core power rail and 9 from the 550 suspend power supply. 551 552 The Intel Quark X1000 SoC has 2 GPIOs powered by the core 553 power well and 6 from the suspend power well. 554 555config GPIO_SCH311X 556 tristate "SMSC SCH311x SuperI/O GPIO" 557 help 558 Driver to enable the GPIOs found on SMSC SMSC SCH3112, SCH3114 and 559 SCH3116 "Super I/O" chipsets. 560 561 To compile this driver as a module, choose M here: the module will 562 be called gpio-sch311x. 563 564config GPIO_TS5500 565 tristate "TS-5500 DIO blocks and compatibles" 566 depends on TS5500 || COMPILE_TEST 567 help 568 This driver supports Digital I/O exposed by pin blocks found on some 569 Technologic Systems platforms. It includes, but is not limited to, 3 570 blocks of the TS-5500: DIO1, DIO2 and the LCD port, and the TS-5600 571 LCD port. 572 573endmenu 574 575menu "I2C GPIO expanders" 576 depends on I2C 577 578config GPIO_ADP5588 579 tristate "ADP5588 I2C GPIO expander" 580 help 581 This option enables support for 18 GPIOs found 582 on Analog Devices ADP5588 GPIO Expanders. 583 584config GPIO_ADP5588_IRQ 585 bool "Interrupt controller support for ADP5588" 586 depends on GPIO_ADP5588=y 587 help 588 Say yes here to enable the adp5588 to be used as an interrupt 589 controller. It requires the driver to be built in the kernel. 590 591config GPIO_ADNP 592 tristate "Avionic Design N-bit GPIO expander" 593 depends on OF_GPIO 594 select GPIOLIB_IRQCHIP 595 help 596 This option enables support for N GPIOs found on Avionic Design 597 I2C GPIO expanders. The register space will be extended by powers 598 of two, so the controller will need to accommodate for that. For 599 example: if a controller provides 48 pins, 6 registers will be 600 enough to represent all pins, but the driver will assume a 601 register layout for 64 pins (8 registers). 602 603config GPIO_MAX7300 604 tristate "Maxim MAX7300 GPIO expander" 605 select GPIO_MAX730X 606 help 607 GPIO driver for Maxim MAX7300 I2C-based GPIO expander. 608 609config GPIO_MAX732X 610 tristate "MAX7319, MAX7320-7327 I2C Port Expanders" 611 help 612 Say yes here to support the MAX7319, MAX7320-7327 series of I2C 613 Port Expanders. Each IO port on these chips has a fixed role of 614 Input (designated by 'I'), Push-Pull Output ('O'), or Open-Drain 615 Input and Output (designed by 'P'). The combinations are listed 616 below: 617 618 8 bits: max7319 (8I), max7320 (8O), max7321 (8P), 619 max7322 (4I4O), max7323 (4P4O) 620 621 16 bits: max7324 (8I8O), max7325 (8P8O), 622 max7326 (4I12O), max7327 (4P12O) 623 624 Board setup code must specify the model to use, and the start 625 number for these GPIOs. 626 627config GPIO_MAX732X_IRQ 628 bool "Interrupt controller support for MAX732x" 629 depends on GPIO_MAX732X=y 630 select GPIOLIB_IRQCHIP 631 help 632 Say yes here to enable the max732x to be used as an interrupt 633 controller. It requires the driver to be built in the kernel. 634 635config GPIO_MC9S08DZ60 636 bool "MX35 3DS BOARD MC9S08DZ60 GPIO functions" 637 depends on I2C=y && MACH_MX35_3DS 638 help 639 Select this to enable the MC9S08DZ60 GPIO driver 640 641config GPIO_PCA953X 642 tristate "PCA95[357]x, PCA9698, TCA64xx, and MAX7310 I/O ports" 643 help 644 Say yes here to provide access to several register-oriented 645 SMBus I/O expanders, made mostly by NXP or TI. Compatible 646 models include: 647 648 4 bits: pca9536, pca9537 649 650 8 bits: max7310, max7315, pca6107, pca9534, pca9538, pca9554, 651 pca9556, pca9557, pca9574, tca6408, xra1202 652 653 16 bits: max7312, max7313, pca9535, pca9539, pca9555, pca9575, 654 tca6416 655 656 24 bits: tca6424 657 658 40 bits: pca9505, pca9698 659 660config GPIO_PCA953X_IRQ 661 bool "Interrupt controller support for PCA953x" 662 depends on GPIO_PCA953X=y 663 select GPIOLIB_IRQCHIP 664 help 665 Say yes here to enable the pca953x to be used as an interrupt 666 controller. It requires the driver to be built in the kernel. 667 668config GPIO_PCF857X 669 tristate "PCF857x, PCA{85,96}7x, and MAX732[89] I2C GPIO expanders" 670 select GPIOLIB_IRQCHIP 671 select IRQ_DOMAIN 672 help 673 Say yes here to provide access to most "quasi-bidirectional" I2C 674 GPIO expanders used for additional digital outputs or inputs. 675 Most of these parts are from NXP, though TI is a second source for 676 some of them. Compatible models include: 677 678 8 bits: pcf8574, pcf8574a, pca8574, pca8574a, 679 pca9670, pca9672, pca9674, pca9674a, 680 max7328, max7329 681 682 16 bits: pcf8575, pcf8575c, pca8575, 683 pca9671, pca9673, pca9675 684 685 Your board setup code will need to declare the expanders in 686 use, and assign numbers to the GPIOs they expose. Those GPIOs 687 can then be used from drivers and other kernel code, just like 688 other GPIOs, but only accessible from task contexts. 689 690 This driver provides an in-kernel interface to those GPIOs using 691 platform-neutral GPIO calls. 692 693config GPIO_SX150X 694 bool "Semtech SX150x I2C GPIO expander" 695 depends on I2C=y 696 select GPIOLIB_IRQCHIP 697 default n 698 help 699 Say yes here to provide support for Semtech SX150-series I2C 700 GPIO expanders. Compatible models include: 701 702 8 bits: sx1508q 703 16 bits: sx1509q 704 705endmenu 706 707menu "MFD GPIO expanders" 708 709config GPIO_ADP5520 710 tristate "GPIO Support for ADP5520 PMIC" 711 depends on PMIC_ADP5520 712 help 713 This option enables support for on-chip GPIO found 714 on Analog Devices ADP5520 PMICs. 715 716config GPIO_ARIZONA 717 tristate "Wolfson Microelectronics Arizona class devices" 718 depends on MFD_ARIZONA 719 help 720 Support for GPIOs on Wolfson Arizona class devices. 721 722config GPIO_CRYSTAL_COVE 723 tristate "GPIO support for Crystal Cove PMIC" 724 depends on INTEL_SOC_PMIC 725 select GPIOLIB_IRQCHIP 726 help 727 Support for GPIO pins on Crystal Cove PMIC. 728 729 Say Yes if you have a Intel SoC based tablet with Crystal Cove PMIC 730 inside. 731 732 This driver can also be built as a module. If so, the module will be 733 called gpio-crystalcove. 734 735config GPIO_CS5535 736 tristate "AMD CS5535/CS5536 GPIO support" 737 depends on MFD_CS5535 738 help 739 The AMD CS5535 and CS5536 southbridges support 28 GPIO pins that 740 can be used for quite a number of things. The CS5535/6 is found on 741 AMD Geode and Lemote Yeeloong devices. 742 743 If unsure, say N. 744 745config GPIO_DA9052 746 tristate "Dialog DA9052 GPIO" 747 depends on PMIC_DA9052 748 help 749 Say yes here to enable the GPIO driver for the DA9052 chip. 750 751config GPIO_DA9055 752 tristate "Dialog Semiconductor DA9055 GPIO" 753 depends on MFD_DA9055 754 help 755 Say yes here to enable the GPIO driver for the DA9055 chip. 756 757 The Dialog DA9055 PMIC chip has 3 GPIO pins that can be 758 be controller by this driver. 759 760 If driver is built as a module it will be called gpio-da9055. 761 762config GPIO_DLN2 763 tristate "Diolan DLN2 GPIO support" 764 depends on MFD_DLN2 765 select GPIOLIB_IRQCHIP 766 767 help 768 Select this option to enable GPIO driver for the Diolan DLN2 769 board. 770 771 This driver can also be built as a module. If so, the module 772 will be called gpio-dln2. 773 774config GPIO_JANZ_TTL 775 tristate "Janz VMOD-TTL Digital IO Module" 776 depends on MFD_JANZ_CMODIO 777 help 778 This enables support for the Janz VMOD-TTL Digital IO module. 779 This driver provides support for driving the pins in output 780 mode only. Input mode is not supported. 781 782config GPIO_KEMPLD 783 tristate "Kontron ETX / COMexpress GPIO" 784 depends on MFD_KEMPLD 785 help 786 This enables support for the PLD GPIO interface on some Kontron ETX 787 and COMexpress (ETXexpress) modules. 788 789 This driver can also be built as a module. If so, the module will be 790 called gpio-kempld. 791 792config GPIO_LP3943 793 tristate "TI/National Semiconductor LP3943 GPIO expander" 794 depends on MFD_LP3943 795 help 796 GPIO driver for LP3943 MFD. 797 LP3943 can be used as a GPIO expander which provides up to 16 GPIOs. 798 Open drain outputs are required for this usage. 799 800config GPIO_MSIC 801 bool "Intel MSIC mixed signal gpio support" 802 depends on MFD_INTEL_MSIC 803 help 804 Enable support for GPIO on intel MSIC controllers found in 805 intel MID devices 806 807config GPIO_PALMAS 808 bool "TI PALMAS series PMICs GPIO" 809 depends on MFD_PALMAS 810 help 811 Select this option to enable GPIO driver for the TI PALMAS 812 series chip family. 813 814config GPIO_RC5T583 815 bool "RICOH RC5T583 GPIO" 816 depends on MFD_RC5T583 817 help 818 Select this option to enable GPIO driver for the Ricoh RC5T583 819 chip family. 820 This driver provides the support for driving/reading the gpio pins 821 of RC5T583 device through standard gpio library. 822 823config GPIO_STMPE 824 bool "STMPE GPIOs" 825 depends on MFD_STMPE 826 depends on OF_GPIO 827 select GPIOLIB_IRQCHIP 828 help 829 This enables support for the GPIOs found on the STMPE I/O 830 Expanders. 831 832config GPIO_TC3589X 833 bool "TC3589X GPIOs" 834 depends on MFD_TC3589X 835 depends on OF_GPIO 836 select GPIOLIB_IRQCHIP 837 help 838 This enables support for the GPIOs found on the TC3589X 839 I/O Expander. 840 841config GPIO_TIMBERDALE 842 bool "Support for timberdale GPIO IP" 843 depends on MFD_TIMBERDALE 844 ---help--- 845 Add support for the GPIO IP in the timberdale FPGA. 846 847config GPIO_TPS6586X 848 bool "TPS6586X GPIO" 849 depends on MFD_TPS6586X 850 help 851 Select this option to enable GPIO driver for the TPS6586X 852 chip family. 853 854config GPIO_TPS65910 855 bool "TPS65910 GPIO" 856 depends on MFD_TPS65910 857 help 858 Select this option to enable GPIO driver for the TPS65910 859 chip family. 860 861config GPIO_TPS65912 862 tristate "TI TPS65912 GPIO" 863 depends on MFD_TPS65912 864 help 865 This driver supports TPS65912 gpio chip 866 867config GPIO_TWL4030 868 tristate "TWL4030, TWL5030, and TPS659x0 GPIOs" 869 depends on TWL4030_CORE 870 help 871 Say yes here to access the GPIO signals of various multi-function 872 power management chips from Texas Instruments. 873 874config GPIO_TWL6040 875 tristate "TWL6040 GPO" 876 depends on TWL6040_CORE 877 help 878 Say yes here to access the GPO signals of twl6040 879 audio chip from Texas Instruments. 880 881config GPIO_UCB1400 882 tristate "Philips UCB1400 GPIO" 883 depends on UCB1400_CORE 884 help 885 This enables support for the Philips UCB1400 GPIO pins. 886 The UCB1400 is an AC97 audio codec. 887 888config GPIO_WM831X 889 tristate "WM831x GPIOs" 890 depends on MFD_WM831X 891 help 892 Say yes here to access the GPIO signals of WM831x power management 893 chips from Wolfson Microelectronics. 894 895config GPIO_WM8350 896 tristate "WM8350 GPIOs" 897 depends on MFD_WM8350 898 help 899 Say yes here to access the GPIO signals of WM8350 power management 900 chips from Wolfson Microelectronics. 901 902config GPIO_WM8994 903 tristate "WM8994 GPIOs" 904 depends on MFD_WM8994 905 help 906 Say yes here to access the GPIO signals of WM8994 audio hub 907 CODECs from Wolfson Microelectronics. 908 909endmenu 910 911menu "PCI GPIO expanders" 912 depends on PCI 913 914config GPIO_AMD8111 915 tristate "AMD 8111 GPIO driver" 916 help 917 The AMD 8111 south bridge contains 32 GPIO pins which can be used. 918 919 Note, that usually system firmware/ACPI handles GPIO pins on their 920 own and users might easily break their systems with uncarefull usage 921 of this driver! 922 923 If unsure, say N 924 925config GPIO_BT8XX 926 tristate "BT8XX GPIO abuser" 927 depends on VIDEO_BT848=n 928 help 929 The BT8xx frame grabber chip has 24 GPIO pins that can be abused 930 as a cheap PCI GPIO card. 931 932 This chip can be found on Miro, Hauppauge and STB TV-cards. 933 934 The card needs to be physically altered for using it as a 935 GPIO card. For more information on how to build a GPIO card 936 from a BT8xx TV card, see the documentation file at 937 Documentation/bt8xxgpio.txt 938 939 If unsure, say N. 940 941config GPIO_INTEL_MID 942 bool "Intel Mid GPIO support" 943 depends on X86 944 select GPIOLIB_IRQCHIP 945 help 946 Say Y here to support Intel Mid GPIO. 947 948config GPIO_ML_IOH 949 tristate "OKI SEMICONDUCTOR ML7213 IOH GPIO support" 950 select GENERIC_IRQ_CHIP 951 help 952 ML7213 is companion chip for Intel Atom E6xx series. 953 This driver can be used for OKI SEMICONDUCTOR ML7213 IOH(Input/Output 954 Hub) which is for IVI(In-Vehicle Infotainment) use. 955 This driver can access the IOH's GPIO device. 956 957config GPIO_PCH 958 tristate "Intel EG20T PCH/LAPIS Semiconductor IOH(ML7223/ML7831) GPIO" 959 depends on X86_32 || MIPS || COMPILE_TEST 960 select GENERIC_IRQ_CHIP 961 help 962 This driver is for PCH(Platform controller Hub) GPIO of Intel Topcliff 963 which is an IOH(Input/Output Hub) for x86 embedded processor. 964 This driver can access PCH GPIO device. 965 966 This driver also can be used for LAPIS Semiconductor IOH(Input/ 967 Output Hub), ML7223 and ML7831. 968 ML7223 IOH is for MP(Media Phone) use. 969 ML7831 IOH is for general purpose use. 970 ML7223/ML7831 is companion chip for Intel Atom E6xx series. 971 ML7223/ML7831 is completely compatible for Intel EG20T PCH. 972 973config GPIO_RDC321X 974 tristate "RDC R-321x GPIO support" 975 select MFD_CORE 976 select MFD_RDC321X 977 help 978 Support for the RDC R321x SoC GPIOs over southbridge 979 PCI configuration space. 980 981config GPIO_SODAVILLE 982 bool "Intel Sodaville GPIO support" 983 depends on X86 && OF 984 select GPIO_GENERIC 985 select GENERIC_IRQ_CHIP 986 help 987 Say Y here to support Intel Sodaville GPIO. 988 989endmenu 990 991menu "SPI GPIO expanders" 992 depends on SPI_MASTER 993 994config GPIO_74X164 995 tristate "74x164 serial-in/parallel-out 8-bits shift register" 996 depends on OF 997 help 998 Driver for 74x164 compatible serial-in/parallel-out 8-outputs 999 shift registers. This driver can be used to provide access 1000 to more gpio outputs. 1001 1002config GPIO_MAX7301 1003 tristate "Maxim MAX7301 GPIO expander" 1004 select GPIO_MAX730X 1005 help 1006 GPIO driver for Maxim MAX7301 SPI-based GPIO expander. 1007 1008config GPIO_MC33880 1009 tristate "Freescale MC33880 high-side/low-side switch" 1010 help 1011 SPI driver for Freescale MC33880 high-side/low-side switch. 1012 This provides GPIO interface supporting inputs and outputs. 1013 1014endmenu 1015 1016menu "SPI or I2C GPIO expanders" 1017 depends on (SPI_MASTER && !I2C) || I2C 1018 1019config GPIO_MCP23S08 1020 tristate "Microchip MCP23xxx I/O expander" 1021 help 1022 SPI/I2C driver for Microchip MCP23S08/MCP23S17/MCP23008/MCP23017 1023 I/O expanders. 1024 This provides a GPIO interface supporting inputs and outputs. 1025 The I2C versions of the chips can be used as interrupt-controller. 1026 1027endmenu 1028 1029menu "USB GPIO expanders" 1030 depends on USB 1031 1032config GPIO_VIPERBOARD 1033 tristate "Viperboard GPIO a & b support" 1034 depends on MFD_VIPERBOARD 1035 help 1036 Say yes here to access the GPIO signals of Nano River 1037 Technologies Viperboard. There are two GPIO chips on the 1038 board: gpioa and gpiob. 1039 See viperboard API specification and Nano 1040 River Tech's viperboard.h for detailed meaning 1041 of the module parameters. 1042 1043endmenu 1044 1045endif 1046