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 34 35menuconfig GPIOLIB 36 bool "GPIO Support" 37 depends on ARCH_WANT_OPTIONAL_GPIOLIB || ARCH_REQUIRE_GPIOLIB 38 select GENERIC_GPIO 39 help 40 This enables GPIO support through the generic GPIO library. 41 You only need to enable this, if you also want to enable 42 one or more of the GPIO drivers below. 43 44 If unsure, say N. 45 46if GPIOLIB 47 48config OF_GPIO 49 def_bool y 50 depends on OF 51 52config DEBUG_GPIO 53 bool "Debug GPIO calls" 54 depends on DEBUG_KERNEL 55 help 56 Say Y here to add some extra checks and diagnostics to GPIO calls. 57 These checks help ensure that GPIOs have been properly initialized 58 before they are used, and that sleeping calls are not made from 59 non-sleeping contexts. They can make bitbanged serial protocols 60 slower. The diagnostics help catch the type of setup errors 61 that are most common when setting up new platforms or boards. 62 63config GPIO_SYSFS 64 bool "/sys/class/gpio/... (sysfs interface)" 65 depends on SYSFS && EXPERIMENTAL 66 help 67 Say Y here to add a sysfs interface for GPIOs. 68 69 This is mostly useful to work around omissions in a system's 70 kernel support. Those are common in custom and semicustom 71 hardware assembled using standard kernels with a minimum of 72 custom patches. In those cases, userspace code may import 73 a given GPIO from the kernel, if no kernel driver requested it. 74 75 Kernel drivers may also request that a particular GPIO be 76 exported to userspace; this can be useful when debugging. 77 78config GPIO_GENERIC 79 tristate 80 81# put drivers in the right section, in alphabetical order 82 83config GPIO_DA9052 84 tristate "Dialog DA9052 GPIO" 85 depends on PMIC_DA9052 86 help 87 Say yes here to enable the GPIO driver for the DA9052 chip. 88 89config GPIO_MAX730X 90 tristate 91 92comment "Memory mapped GPIO drivers:" 93 94config GPIO_GENERIC_PLATFORM 95 tristate "Generic memory-mapped GPIO controller support (MMIO platform device)" 96 select GPIO_GENERIC 97 help 98 Say yes here to support basic platform_device memory-mapped GPIO controllers. 99 100config GPIO_IT8761E 101 tristate "IT8761E GPIO support" 102 depends on X86 # unconditional access to IO space. 103 help 104 Say yes here to support GPIO functionality of IT8761E super I/O chip. 105 106config GPIO_EM 107 tristate "Emma Mobile GPIO" 108 depends on ARM 109 help 110 Say yes here to support GPIO on Renesas Emma Mobile SoCs. 111 112config GPIO_EP93XX 113 def_bool y 114 depends on ARCH_EP93XX 115 select GPIO_GENERIC 116 117config GPIO_MM_LANTIQ 118 bool "Lantiq Memory mapped GPIOs" 119 depends on LANTIQ && SOC_XWAY 120 help 121 This enables support for memory mapped GPIOs on the External Bus Unit 122 (EBU) found on Lantiq SoCs. The gpios are output only as they are 123 created by attaching a 16bit latch to the bus. 124 125config GPIO_MPC5200 126 def_bool y 127 depends on PPC_MPC52xx 128 129config GPIO_MPC8XXX 130 bool "MPC512x/MPC8xxx GPIO support" 131 depends on PPC_MPC512x || PPC_MPC831x || PPC_MPC834x || PPC_MPC837x || \ 132 FSL_SOC_BOOKE || PPC_86xx 133 help 134 Say Y here if you're going to use hardware that connects to the 135 MPC512x/831x/834x/837x/8572/8610 GPIOs. 136 137config GPIO_MSM_V1 138 tristate "Qualcomm MSM GPIO v1" 139 depends on GPIOLIB && ARCH_MSM && (ARCH_MSM7X00A || ARCH_MSM7X30 || ARCH_QSD8X50) 140 help 141 Say yes here to support the GPIO interface on ARM v6 based 142 Qualcomm MSM chips. Most of the pins on the MSM can be 143 selected for GPIO, and are controlled by this driver. 144 145config GPIO_MSM_V2 146 tristate "Qualcomm MSM GPIO v2" 147 depends on GPIOLIB && ARCH_MSM 148 help 149 Say yes here to support the GPIO interface on ARM v7 based 150 Qualcomm MSM chips. Most of the pins on the MSM can be 151 selected for GPIO, and are controlled by this driver. 152 153config GPIO_MVEBU 154 def_bool y 155 depends on ARCH_MVEBU 156 select GPIO_GENERIC 157 select GENERIC_IRQ_CHIP 158 159config GPIO_MXC 160 def_bool y 161 depends on ARCH_MXC 162 select GPIO_GENERIC 163 select GENERIC_IRQ_CHIP 164 165config GPIO_MXS 166 def_bool y 167 depends on ARCH_MXS 168 select GPIO_GENERIC 169 select GENERIC_IRQ_CHIP 170 171config GPIO_PL061 172 bool "PrimeCell PL061 GPIO support" 173 depends on ARM_AMBA 174 select GENERIC_IRQ_CHIP 175 help 176 Say yes here to support the PrimeCell PL061 GPIO device 177 178config GPIO_PXA 179 bool "PXA GPIO support" 180 depends on ARCH_PXA || ARCH_MMP 181 help 182 Say yes here to support the PXA GPIO device 183 184config GPIO_STA2X11 185 bool "STA2x11/ConneXt GPIO support" 186 depends on MFD_STA2X11 187 select GENERIC_IRQ_CHIP 188 help 189 Say yes here to support the STA2x11/ConneXt GPIO device. 190 The GPIO module has 128 GPIO pins with alternate functions. 191 192config GPIO_VT8500 193 bool "VIA/Wondermedia SoC GPIO Support" 194 depends on ARCH_VT8500 195 help 196 Say yes here to support the VT8500/WM8505/WM8650 GPIO controller. 197 198config GPIO_XILINX 199 bool "Xilinx GPIO support" 200 depends on PPC_OF || MICROBLAZE 201 help 202 Say yes here to support the Xilinx FPGA GPIO device 203 204config GPIO_VR41XX 205 tristate "NEC VR4100 series General-purpose I/O Uint support" 206 depends on CPU_VR41XX 207 help 208 Say yes here to support the NEC VR4100 series General-purpose I/O Uint 209 210config GPIO_SCH 211 tristate "Intel SCH/TunnelCreek/Centerton GPIO" 212 depends on PCI && X86 213 select MFD_CORE 214 select LPC_SCH 215 help 216 Say yes here to support GPIO interface on Intel Poulsbo SCH, 217 Intel Tunnel Creek processor or Intel Centerton processor. 218 The Intel SCH contains a total of 14 GPIO pins. Ten GPIOs are 219 powered by the core power rail and are turned off during sleep 220 modes (S3 and higher). The remaining four GPIOs are powered by 221 the Intel SCH suspend power supply. These GPIOs remain 222 active during S3. The suspend powered GPIOs can be used to wake the 223 system from the Suspend-to-RAM state. 224 The Intel Tunnel Creek processor has 5 GPIOs powered by the 225 core power rail and 9 from suspend power supply. 226 The Intel Centerton processor has a total of 30 GPIO pins. 227 Twenty-one are powered by the core power rail and 9 from the 228 suspend power supply. 229 230config GPIO_ICH 231 tristate "Intel ICH GPIO" 232 depends on PCI && X86 233 select MFD_CORE 234 select LPC_ICH 235 help 236 Say yes here to support the GPIO functionality of a number of Intel 237 ICH-based chipsets. Currently supported devices: ICH6, ICH7, ICH8 238 ICH9, ICH10, Series 5/3400 (eg Ibex Peak), Series 6/C200 (eg 239 Cougar Point), NM10 (Tiger Point), and 3100 (Whitmore Lake). 240 241 If unsure, say N. 242 243config GPIO_VX855 244 tristate "VIA VX855/VX875 GPIO" 245 depends on PCI 246 select MFD_CORE 247 select MFD_VX855 248 help 249 Support access to the VX855/VX875 GPIO lines through the gpio library. 250 251 This driver provides common support for accessing the device, 252 additional drivers must be enabled in order to use the 253 functionality of the device. 254 255config GPIO_GE_FPGA 256 bool "GE FPGA based GPIO" 257 depends on GE_FPGA 258 help 259 Support for common GPIO functionality provided on some GE Single Board 260 Computers. 261 262 This driver provides basic support (configure as input or output, read 263 and write pin state) for GPIO implemented in a number of GE single 264 board computers. 265 266comment "I2C GPIO expanders:" 267 268config GPIO_ARIZONA 269 tristate "Wolfson Microelectronics Arizona class devices" 270 depends on MFD_ARIZONA 271 help 272 Support for GPIOs on Wolfson Arizona class devices. 273 274config GPIO_MAX7300 275 tristate "Maxim MAX7300 GPIO expander" 276 depends on I2C 277 select GPIO_MAX730X 278 help 279 GPIO driver for Maxim MAX7301 I2C-based GPIO expander. 280 281config GPIO_MAX732X 282 tristate "MAX7319, MAX7320-7327 I2C Port Expanders" 283 depends on I2C 284 help 285 Say yes here to support the MAX7319, MAX7320-7327 series of I2C 286 Port Expanders. Each IO port on these chips has a fixed role of 287 Input (designated by 'I'), Push-Pull Output ('O'), or Open-Drain 288 Input and Output (designed by 'P'). The combinations are listed 289 below: 290 291 8 bits: max7319 (8I), max7320 (8O), max7321 (8P), 292 max7322 (4I4O), max7323 (4P4O) 293 294 16 bits: max7324 (8I8O), max7325 (8P8O), 295 max7326 (4I12O), max7327 (4P12O) 296 297 Board setup code must specify the model to use, and the start 298 number for these GPIOs. 299 300config GPIO_MAX732X_IRQ 301 bool "Interrupt controller support for MAX732x" 302 depends on GPIO_MAX732X=y && GENERIC_HARDIRQS 303 help 304 Say yes here to enable the max732x to be used as an interrupt 305 controller. It requires the driver to be built in the kernel. 306 307config GPIO_MC9S08DZ60 308 bool "MX35 3DS BOARD MC9S08DZ60 GPIO functions" 309 depends on I2C=y && MACH_MX35_3DS 310 help 311 Select this to enable the MC9S08DZ60 GPIO driver 312 313config GPIO_PCA953X 314 tristate "PCA953x, PCA955x, PCA957x, TCA64xx, and MAX7310 I/O ports" 315 depends on I2C 316 help 317 Say yes here to provide access to several register-oriented 318 SMBus I/O expanders, made mostly by NXP or TI. Compatible 319 models include: 320 321 4 bits: pca9536, pca9537 322 323 8 bits: max7310, max7315, pca6107, pca9534, pca9538, pca9554, 324 pca9556, pca9557, pca9574, tca6408 325 326 16 bits: max7312, max7313, pca9535, pca9539, pca9555, pca9575, 327 tca6416 328 329config GPIO_PCA953X_IRQ 330 bool "Interrupt controller support for PCA953x" 331 depends on GPIO_PCA953X=y 332 help 333 Say yes here to enable the pca953x to be used as an interrupt 334 controller. It requires the driver to be built in the kernel. 335 336config GPIO_PCF857X 337 tristate "PCF857x, PCA{85,96}7x, and MAX732[89] I2C GPIO expanders" 338 depends on I2C 339 select IRQ_DOMAIN 340 help 341 Say yes here to provide access to most "quasi-bidirectional" I2C 342 GPIO expanders used for additional digital outputs or inputs. 343 Most of these parts are from NXP, though TI is a second source for 344 some of them. Compatible models include: 345 346 8 bits: pcf8574, pcf8574a, pca8574, pca8574a, 347 pca9670, pca9672, pca9674, pca9674a, 348 max7328, max7329 349 350 16 bits: pcf8575, pcf8575c, pca8575, 351 pca9671, pca9673, pca9675 352 353 Your board setup code will need to declare the expanders in 354 use, and assign numbers to the GPIOs they expose. Those GPIOs 355 can then be used from drivers and other kernel code, just like 356 other GPIOs, but only accessible from task contexts. 357 358 This driver provides an in-kernel interface to those GPIOs using 359 platform-neutral GPIO calls. 360 361config GPIO_RC5T583 362 bool "RICOH RC5T583 GPIO" 363 depends on MFD_RC5T583 364 help 365 Select this option to enable GPIO driver for the Ricoh RC5T583 366 chip family. 367 This driver provides the support for driving/reading the gpio pins 368 of RC5T583 device through standard gpio library. 369 370config GPIO_SX150X 371 bool "Semtech SX150x I2C GPIO expander" 372 depends on I2C=y 373 default n 374 help 375 Say yes here to provide support for Semtech SX150-series I2C 376 GPIO expanders. Compatible models include: 377 378 8 bits: sx1508q 379 16 bits: sx1509q 380 381config GPIO_STMPE 382 bool "STMPE GPIOs" 383 depends on MFD_STMPE 384 help 385 This enables support for the GPIOs found on the STMPE I/O 386 Expanders. 387 388config GPIO_STP_XWAY 389 bool "XWAY STP GPIOs" 390 depends on SOC_XWAY 391 help 392 This enables support for the Serial To Parallel (STP) unit found on 393 XWAY SoC. The STP allows the SoC to drive a shift registers cascade, 394 that can be up to 24 bit. This peripheral is aimed at driving leds. 395 Some of the gpios/leds can be auto updated by the soc with dsl and 396 phy status. 397 398config GPIO_TC3589X 399 bool "TC3589X GPIOs" 400 depends on MFD_TC3589X 401 help 402 This enables support for the GPIOs found on the TC3589X 403 I/O Expander. 404 405config GPIO_TPS65912 406 tristate "TI TPS65912 GPIO" 407 depends on (MFD_TPS65912_I2C || MFD_TPS65912_SPI) 408 help 409 This driver supports TPS65912 gpio chip 410 411config GPIO_TWL4030 412 tristate "TWL4030, TWL5030, and TPS659x0 GPIOs" 413 depends on TWL4030_CORE 414 help 415 Say yes here to access the GPIO signals of various multi-function 416 power management chips from Texas Instruments. 417 418config GPIO_TWL6040 419 tristate "TWL6040 GPO" 420 depends on TWL6040_CORE 421 help 422 Say yes here to access the GPO signals of twl6040 423 audio chip from Texas Instruments. 424 425config GPIO_WM831X 426 tristate "WM831x GPIOs" 427 depends on MFD_WM831X 428 help 429 Say yes here to access the GPIO signals of WM831x power management 430 chips from Wolfson Microelectronics. 431 432config GPIO_WM8350 433 tristate "WM8350 GPIOs" 434 depends on MFD_WM8350 435 help 436 Say yes here to access the GPIO signals of WM8350 power management 437 chips from Wolfson Microelectronics. 438 439config GPIO_WM8994 440 tristate "WM8994 GPIOs" 441 depends on MFD_WM8994 442 help 443 Say yes here to access the GPIO signals of WM8994 audio hub 444 CODECs from Wolfson Microelectronics. 445 446config GPIO_ADP5520 447 tristate "GPIO Support for ADP5520 PMIC" 448 depends on PMIC_ADP5520 449 help 450 This option enables support for on-chip GPIO found 451 on Analog Devices ADP5520 PMICs. 452 453config GPIO_ADP5588 454 tristate "ADP5588 I2C GPIO expander" 455 depends on I2C 456 help 457 This option enables support for 18 GPIOs found 458 on Analog Devices ADP5588 GPIO Expanders. 459 460config GPIO_ADP5588_IRQ 461 bool "Interrupt controller support for ADP5588" 462 depends on GPIO_ADP5588=y 463 help 464 Say yes here to enable the adp5588 to be used as an interrupt 465 controller. It requires the driver to be built in the kernel. 466 467config GPIO_ADNP 468 tristate "Avionic Design N-bit GPIO expander" 469 depends on I2C && OF_GPIO 470 help 471 This option enables support for N GPIOs found on Avionic Design 472 I2C GPIO expanders. The register space will be extended by powers 473 of two, so the controller will need to accomodate for that. For 474 example: if a controller provides 48 pins, 6 registers will be 475 enough to represent all pins, but the driver will assume a 476 register layout for 64 pins (8 registers). 477 478comment "PCI GPIO expanders:" 479 480config GPIO_CS5535 481 tristate "AMD CS5535/CS5536 GPIO support" 482 depends on PCI && X86 && MFD_CS5535 483 help 484 The AMD CS5535 and CS5536 southbridges support 28 GPIO pins that 485 can be used for quite a number of things. The CS5535/6 is found on 486 AMD Geode and Lemote Yeeloong devices. 487 488 If unsure, say N. 489 490config GPIO_BT8XX 491 tristate "BT8XX GPIO abuser" 492 depends on PCI && VIDEO_BT848=n 493 help 494 The BT8xx frame grabber chip has 24 GPIO pins than can be abused 495 as a cheap PCI GPIO card. 496 497 This chip can be found on Miro, Hauppauge and STB TV-cards. 498 499 The card needs to be physically altered for using it as a 500 GPIO card. For more information on how to build a GPIO card 501 from a BT8xx TV card, see the documentation file at 502 Documentation/bt8xxgpio.txt 503 504 If unsure, say N. 505 506config GPIO_AMD8111 507 tristate "AMD 8111 GPIO driver" 508 depends on PCI 509 help 510 The AMD 8111 south bridge contains 32 GPIO pins which can be used. 511 512 Note, that usually system firmware/ACPI handles GPIO pins on their 513 own and users might easily break their systems with uncarefull usage 514 of this driver! 515 516 If unsure, say N 517 518config GPIO_LANGWELL 519 bool "Intel Langwell/Penwell GPIO support" 520 depends on PCI && X86 521 select IRQ_DOMAIN 522 help 523 Say Y here to support Intel Langwell/Penwell GPIO. 524 525config GPIO_PCH 526 tristate "Intel EG20T PCH/LAPIS Semiconductor IOH(ML7223/ML7831) GPIO" 527 depends on PCI && X86 528 select GENERIC_IRQ_CHIP 529 help 530 This driver is for PCH(Platform controller Hub) GPIO of Intel Topcliff 531 which is an IOH(Input/Output Hub) for x86 embedded processor. 532 This driver can access PCH GPIO device. 533 534 This driver also can be used for LAPIS Semiconductor IOH(Input/ 535 Output Hub), ML7223 and ML7831. 536 ML7223 IOH is for MP(Media Phone) use. 537 ML7831 IOH is for general purpose use. 538 ML7223/ML7831 is companion chip for Intel Atom E6xx series. 539 ML7223/ML7831 is completely compatible for Intel EG20T PCH. 540 541config GPIO_ML_IOH 542 tristate "OKI SEMICONDUCTOR ML7213 IOH GPIO support" 543 depends on PCI 544 select GENERIC_IRQ_CHIP 545 help 546 ML7213 is companion chip for Intel Atom E6xx series. 547 This driver can be used for OKI SEMICONDUCTOR ML7213 IOH(Input/Output 548 Hub) which is for IVI(In-Vehicle Infotainment) use. 549 This driver can access the IOH's GPIO device. 550 551config GPIO_SODAVILLE 552 bool "Intel Sodaville GPIO support" 553 depends on X86 && PCI && OF 554 select GPIO_GENERIC 555 select GENERIC_IRQ_CHIP 556 help 557 Say Y here to support Intel Sodaville GPIO. 558 559config GPIO_TIMBERDALE 560 bool "Support for timberdale GPIO IP" 561 depends on MFD_TIMBERDALE && HAS_IOMEM 562 ---help--- 563 Add support for the GPIO IP in the timberdale FPGA. 564 565config GPIO_RDC321X 566 tristate "RDC R-321x GPIO support" 567 depends on PCI 568 select MFD_CORE 569 select MFD_RDC321X 570 help 571 Support for the RDC R321x SoC GPIOs over southbridge 572 PCI configuration space. 573 574comment "SPI GPIO expanders:" 575 576config GPIO_MAX7301 577 tristate "Maxim MAX7301 GPIO expander" 578 depends on SPI_MASTER 579 select GPIO_MAX730X 580 help 581 GPIO driver for Maxim MAX7301 SPI-based GPIO expander. 582 583config GPIO_MCP23S08 584 tristate "Microchip MCP23xxx I/O expander" 585 depends on SPI_MASTER || I2C 586 help 587 SPI/I2C driver for Microchip MCP23S08/MCP23S17/MCP23008/MCP23017 588 I/O expanders. 589 This provides a GPIO interface supporting inputs and outputs. 590 591config GPIO_MC33880 592 tristate "Freescale MC33880 high-side/low-side switch" 593 depends on SPI_MASTER 594 help 595 SPI driver for Freescale MC33880 high-side/low-side switch. 596 This provides GPIO interface supporting inputs and outputs. 597 598config GPIO_74X164 599 tristate "74x164 serial-in/parallel-out 8-bits shift register" 600 depends on SPI_MASTER 601 help 602 Platform driver for 74x164 compatible serial-in/parallel-out 603 8-outputs shift registers. This driver can be used to provide access 604 to more gpio outputs. 605 606comment "AC97 GPIO expanders:" 607 608config GPIO_UCB1400 609 bool "Philips UCB1400 GPIO" 610 depends on UCB1400_CORE 611 help 612 This enables support for the Philips UCB1400 GPIO pins. 613 The UCB1400 is an AC97 audio codec. 614 615comment "MODULbus GPIO expanders:" 616 617config GPIO_JANZ_TTL 618 tristate "Janz VMOD-TTL Digital IO Module" 619 depends on MFD_JANZ_CMODIO 620 help 621 This enables support for the Janz VMOD-TTL Digital IO module. 622 This driver provides support for driving the pins in output 623 mode only. Input mode is not supported. 624 625config GPIO_AB8500 626 bool "ST-Ericsson AB8500 Mixed Signal Circuit gpio functions" 627 depends on AB8500_CORE && BROKEN 628 help 629 Select this to enable the AB8500 IC GPIO driver 630 631config GPIO_TPS6586X 632 bool "TPS6586X GPIO" 633 depends on MFD_TPS6586X 634 help 635 Select this option to enable GPIO driver for the TPS6586X 636 chip family. 637 638config GPIO_TPS65910 639 bool "TPS65910 GPIO" 640 depends on MFD_TPS65910 641 help 642 Select this option to enable GPIO driver for the TPS65910 643 chip family. 644 645config GPIO_MSIC 646 bool "Intel MSIC mixed signal gpio support" 647 depends on MFD_INTEL_MSIC 648 help 649 Enable support for GPIO on intel MSIC controllers found in 650 intel MID devices 651 652endif 653