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 && !SPARC 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 && BROKEN 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_MXC 154 def_bool y 155 depends on ARCH_MXC 156 select GPIO_GENERIC 157 select GENERIC_IRQ_CHIP 158 159config GPIO_MXS 160 def_bool y 161 depends on ARCH_MXS 162 select GPIO_GENERIC 163 select GENERIC_IRQ_CHIP 164 165config GPIO_PL061 166 bool "PrimeCell PL061 GPIO support" 167 depends on ARM_AMBA 168 select GENERIC_IRQ_CHIP 169 help 170 Say yes here to support the PrimeCell PL061 GPIO device 171 172config GPIO_PXA 173 bool "PXA GPIO support" 174 depends on ARCH_PXA || ARCH_MMP 175 help 176 Say yes here to support the PXA GPIO device 177 178config GPIO_STA2X11 179 bool "STA2x11/ConneXt GPIO support" 180 depends on MFD_STA2X11 181 select GENERIC_IRQ_CHIP 182 help 183 Say yes here to support the STA2x11/ConneXt GPIO device. 184 The GPIO module has 128 GPIO pins with alternate functions. 185 186config GPIO_XILINX 187 bool "Xilinx GPIO support" 188 depends on PPC_OF || MICROBLAZE 189 help 190 Say yes here to support the Xilinx FPGA GPIO device 191 192config GPIO_VR41XX 193 tristate "NEC VR4100 series General-purpose I/O Uint support" 194 depends on CPU_VR41XX 195 help 196 Say yes here to support the NEC VR4100 series General-purpose I/O Uint 197 198config GPIO_SCH 199 tristate "Intel SCH/TunnelCreek/Centerton GPIO" 200 depends on PCI && X86 201 select MFD_CORE 202 select LPC_SCH 203 help 204 Say yes here to support GPIO interface on Intel Poulsbo SCH, 205 Intel Tunnel Creek processor or Intel Centerton processor. 206 The Intel SCH contains a total of 14 GPIO pins. Ten GPIOs are 207 powered by the core power rail and are turned off during sleep 208 modes (S3 and higher). The remaining four GPIOs are powered by 209 the Intel SCH suspend power supply. These GPIOs remain 210 active during S3. The suspend powered GPIOs can be used to wake the 211 system from the Suspend-to-RAM state. 212 The Intel Tunnel Creek processor has 5 GPIOs powered by the 213 core power rail and 9 from suspend power supply. 214 The Intel Centerton processor has a total of 30 GPIO pins. 215 Twenty-one are powered by the core power rail and 9 from the 216 suspend power supply. 217 218config GPIO_ICH 219 tristate "Intel ICH GPIO" 220 depends on PCI && X86 221 select MFD_CORE 222 select LPC_ICH 223 help 224 Say yes here to support the GPIO functionality of a number of Intel 225 ICH-based chipsets. Currently supported devices: ICH6, ICH7, ICH8 226 ICH9, ICH10, Series 5/3400 (eg Ibex Peak), Series 6/C200 (eg 227 Cougar Point), NM10 (Tiger Point), and 3100 (Whitmore Lake). 228 229 If unsure, say N. 230 231config GPIO_VX855 232 tristate "VIA VX855/VX875 GPIO" 233 depends on PCI 234 select MFD_CORE 235 select MFD_VX855 236 help 237 Support access to the VX855/VX875 GPIO lines through the gpio library. 238 239 This driver provides common support for accessing the device, 240 additional drivers must be enabled in order to use the 241 functionality of the device. 242 243config GPIO_GE_FPGA 244 bool "GE FPGA based GPIO" 245 depends on GE_FPGA 246 help 247 Support for common GPIO functionality provided on some GE Single Board 248 Computers. 249 250 This driver provides basic support (configure as input or output, read 251 and write pin state) for GPIO implemented in a number of GE single 252 board computers. 253 254comment "I2C GPIO expanders:" 255 256config GPIO_ARIZONA 257 tristate "Wolfson Microelectronics Arizona class devices" 258 depends on MFD_ARIZONA 259 help 260 Support for GPIOs on Wolfson Arizona class devices. 261 262config GPIO_MAX7300 263 tristate "Maxim MAX7300 GPIO expander" 264 depends on I2C 265 select GPIO_MAX730X 266 help 267 GPIO driver for Maxim MAX7301 I2C-based GPIO expander. 268 269config GPIO_MAX732X 270 tristate "MAX7319, MAX7320-7327 I2C Port Expanders" 271 depends on I2C 272 help 273 Say yes here to support the MAX7319, MAX7320-7327 series of I2C 274 Port Expanders. Each IO port on these chips has a fixed role of 275 Input (designated by 'I'), Push-Pull Output ('O'), or Open-Drain 276 Input and Output (designed by 'P'). The combinations are listed 277 below: 278 279 8 bits: max7319 (8I), max7320 (8O), max7321 (8P), 280 max7322 (4I4O), max7323 (4P4O) 281 282 16 bits: max7324 (8I8O), max7325 (8P8O), 283 max7326 (4I12O), max7327 (4P12O) 284 285 Board setup code must specify the model to use, and the start 286 number for these GPIOs. 287 288config GPIO_MAX732X_IRQ 289 bool "Interrupt controller support for MAX732x" 290 depends on GPIO_MAX732X=y && GENERIC_HARDIRQS 291 help 292 Say yes here to enable the max732x to be used as an interrupt 293 controller. It requires the driver to be built in the kernel. 294 295config GPIO_MC9S08DZ60 296 bool "MX35 3DS BOARD MC9S08DZ60 GPIO functions" 297 depends on I2C && MACH_MX35_3DS 298 help 299 Select this to enable the MC9S08DZ60 GPIO driver 300 301config GPIO_PCA953X 302 tristate "PCA953x, PCA955x, PCA957x, TCA64xx, and MAX7310 I/O ports" 303 depends on I2C 304 help 305 Say yes here to provide access to several register-oriented 306 SMBus I/O expanders, made mostly by NXP or TI. Compatible 307 models include: 308 309 4 bits: pca9536, pca9537 310 311 8 bits: max7310, max7315, pca6107, pca9534, pca9538, pca9554, 312 pca9556, pca9557, pca9574, tca6408 313 314 16 bits: max7312, max7313, pca9535, pca9539, pca9555, pca9575, 315 tca6416 316 317config GPIO_PCA953X_IRQ 318 bool "Interrupt controller support for PCA953x" 319 depends on GPIO_PCA953X=y 320 help 321 Say yes here to enable the pca953x to be used as an interrupt 322 controller. It requires the driver to be built in the kernel. 323 324config GPIO_PCF857X 325 tristate "PCF857x, PCA{85,96}7x, and MAX732[89] I2C GPIO expanders" 326 depends on I2C 327 help 328 Say yes here to provide access to most "quasi-bidirectional" I2C 329 GPIO expanders used for additional digital outputs or inputs. 330 Most of these parts are from NXP, though TI is a second source for 331 some of them. Compatible models include: 332 333 8 bits: pcf8574, pcf8574a, pca8574, pca8574a, 334 pca9670, pca9672, pca9674, pca9674a, 335 max7328, max7329 336 337 16 bits: pcf8575, pcf8575c, pca8575, 338 pca9671, pca9673, pca9675 339 340 Your board setup code will need to declare the expanders in 341 use, and assign numbers to the GPIOs they expose. Those GPIOs 342 can then be used from drivers and other kernel code, just like 343 other GPIOs, but only accessible from task contexts. 344 345 This driver provides an in-kernel interface to those GPIOs using 346 platform-neutral GPIO calls. 347 348config GPIO_RC5T583 349 bool "RICOH RC5T583 GPIO" 350 depends on MFD_RC5T583 351 help 352 Select this option to enable GPIO driver for the Ricoh RC5T583 353 chip family. 354 This driver provides the support for driving/reading the gpio pins 355 of RC5T583 device through standard gpio library. 356 357config GPIO_SX150X 358 bool "Semtech SX150x I2C GPIO expander" 359 depends on I2C=y 360 default n 361 help 362 Say yes here to provide support for Semtech SX150-series I2C 363 GPIO expanders. Compatible models include: 364 365 8 bits: sx1508q 366 16 bits: sx1509q 367 368config GPIO_STMPE 369 bool "STMPE GPIOs" 370 depends on MFD_STMPE 371 help 372 This enables support for the GPIOs found on the STMPE I/O 373 Expanders. 374 375config GPIO_STP_XWAY 376 bool "XWAY STP GPIOs" 377 depends on SOC_XWAY 378 help 379 This enables support for the Serial To Parallel (STP) unit found on 380 XWAY SoC. The STP allows the SoC to drive a shift registers cascade, 381 that can be up to 24 bit. This peripheral is aimed at driving leds. 382 Some of the gpios/leds can be auto updated by the soc with dsl and 383 phy status. 384 385config GPIO_TC3589X 386 bool "TC3589X GPIOs" 387 depends on MFD_TC3589X 388 help 389 This enables support for the GPIOs found on the TC3589X 390 I/O Expander. 391 392config GPIO_TPS65912 393 tristate "TI TPS65912 GPIO" 394 depends on (MFD_TPS65912_I2C || MFD_TPS65912_SPI) 395 help 396 This driver supports TPS65912 gpio chip 397 398config GPIO_TWL4030 399 tristate "TWL4030, TWL5030, and TPS659x0 GPIOs" 400 depends on TWL4030_CORE 401 help 402 Say yes here to access the GPIO signals of various multi-function 403 power management chips from Texas Instruments. 404 405config GPIO_TWL6040 406 tristate "TWL6040 GPO" 407 depends on TWL6040_CORE 408 help 409 Say yes here to access the GPO signals of twl6040 410 audio chip from Texas Instruments. 411 412config GPIO_WM831X 413 tristate "WM831x GPIOs" 414 depends on MFD_WM831X 415 help 416 Say yes here to access the GPIO signals of WM831x power management 417 chips from Wolfson Microelectronics. 418 419config GPIO_WM8350 420 tristate "WM8350 GPIOs" 421 depends on MFD_WM8350 422 help 423 Say yes here to access the GPIO signals of WM8350 power management 424 chips from Wolfson Microelectronics. 425 426config GPIO_WM8994 427 tristate "WM8994 GPIOs" 428 depends on MFD_WM8994 429 help 430 Say yes here to access the GPIO signals of WM8994 audio hub 431 CODECs from Wolfson Microelectronics. 432 433config GPIO_ADP5520 434 tristate "GPIO Support for ADP5520 PMIC" 435 depends on PMIC_ADP5520 436 help 437 This option enables support for on-chip GPIO found 438 on Analog Devices ADP5520 PMICs. 439 440config GPIO_ADP5588 441 tristate "ADP5588 I2C GPIO expander" 442 depends on I2C 443 help 444 This option enables support for 18 GPIOs found 445 on Analog Devices ADP5588 GPIO Expanders. 446 447config GPIO_ADP5588_IRQ 448 bool "Interrupt controller support for ADP5588" 449 depends on GPIO_ADP5588=y 450 help 451 Say yes here to enable the adp5588 to be used as an interrupt 452 controller. It requires the driver to be built in the kernel. 453 454comment "PCI GPIO expanders:" 455 456config GPIO_CS5535 457 tristate "AMD CS5535/CS5536 GPIO support" 458 depends on PCI && X86 && MFD_CS5535 459 help 460 The AMD CS5535 and CS5536 southbridges support 28 GPIO pins that 461 can be used for quite a number of things. The CS5535/6 is found on 462 AMD Geode and Lemote Yeeloong devices. 463 464 If unsure, say N. 465 466config GPIO_BT8XX 467 tristate "BT8XX GPIO abuser" 468 depends on PCI && VIDEO_BT848=n 469 help 470 The BT8xx frame grabber chip has 24 GPIO pins than can be abused 471 as a cheap PCI GPIO card. 472 473 This chip can be found on Miro, Hauppauge and STB TV-cards. 474 475 The card needs to be physically altered for using it as a 476 GPIO card. For more information on how to build a GPIO card 477 from a BT8xx TV card, see the documentation file at 478 Documentation/bt8xxgpio.txt 479 480 If unsure, say N. 481 482config GPIO_AMD8111 483 tristate "AMD 8111 GPIO driver" 484 depends on PCI 485 help 486 The AMD 8111 south bridge contains 32 GPIO pins which can be used. 487 488 Note, that usually system firmware/ACPI handles GPIO pins on their 489 own and users might easily break their systems with uncarefull usage 490 of this driver! 491 492 If unsure, say N 493 494config GPIO_LANGWELL 495 bool "Intel Langwell/Penwell GPIO support" 496 depends on PCI && X86 497 select IRQ_DOMAIN 498 help 499 Say Y here to support Intel Langwell/Penwell GPIO. 500 501config GPIO_PCH 502 tristate "Intel EG20T PCH/LAPIS Semiconductor IOH(ML7223/ML7831) GPIO" 503 depends on PCI && X86 504 select GENERIC_IRQ_CHIP 505 help 506 This driver is for PCH(Platform controller Hub) GPIO of Intel Topcliff 507 which is an IOH(Input/Output Hub) for x86 embedded processor. 508 This driver can access PCH GPIO device. 509 510 This driver also can be used for LAPIS Semiconductor IOH(Input/ 511 Output Hub), ML7223 and ML7831. 512 ML7223 IOH is for MP(Media Phone) use. 513 ML7831 IOH is for general purpose use. 514 ML7223/ML7831 is companion chip for Intel Atom E6xx series. 515 ML7223/ML7831 is completely compatible for Intel EG20T PCH. 516 517config GPIO_ML_IOH 518 tristate "OKI SEMICONDUCTOR ML7213 IOH GPIO support" 519 depends on PCI 520 select GENERIC_IRQ_CHIP 521 help 522 ML7213 is companion chip for Intel Atom E6xx series. 523 This driver can be used for OKI SEMICONDUCTOR ML7213 IOH(Input/Output 524 Hub) which is for IVI(In-Vehicle Infotainment) use. 525 This driver can access the IOH's GPIO device. 526 527config GPIO_SODAVILLE 528 bool "Intel Sodaville GPIO support" 529 depends on X86 && PCI && OF 530 select GPIO_GENERIC 531 select GENERIC_IRQ_CHIP 532 help 533 Say Y here to support Intel Sodaville GPIO. 534 535config GPIO_TIMBERDALE 536 bool "Support for timberdale GPIO IP" 537 depends on MFD_TIMBERDALE && HAS_IOMEM 538 ---help--- 539 Add support for the GPIO IP in the timberdale FPGA. 540 541config GPIO_RDC321X 542 tristate "RDC R-321x GPIO support" 543 depends on PCI 544 select MFD_CORE 545 select MFD_RDC321X 546 help 547 Support for the RDC R321x SoC GPIOs over southbridge 548 PCI configuration space. 549 550comment "SPI GPIO expanders:" 551 552config GPIO_MAX7301 553 tristate "Maxim MAX7301 GPIO expander" 554 depends on SPI_MASTER 555 select GPIO_MAX730X 556 help 557 GPIO driver for Maxim MAX7301 SPI-based GPIO expander. 558 559config GPIO_MCP23S08 560 tristate "Microchip MCP23xxx I/O expander" 561 depends on SPI_MASTER || I2C 562 help 563 SPI/I2C driver for Microchip MCP23S08/MCP23S17/MCP23008/MCP23017 564 I/O expanders. 565 This provides a GPIO interface supporting inputs and outputs. 566 567config GPIO_MC33880 568 tristate "Freescale MC33880 high-side/low-side switch" 569 depends on SPI_MASTER 570 help 571 SPI driver for Freescale MC33880 high-side/low-side switch. 572 This provides GPIO interface supporting inputs and outputs. 573 574config GPIO_74X164 575 tristate "74x164 serial-in/parallel-out 8-bits shift register" 576 depends on SPI_MASTER 577 help 578 Platform driver for 74x164 compatible serial-in/parallel-out 579 8-outputs shift registers. This driver can be used to provide access 580 to more gpio outputs. 581 582comment "AC97 GPIO expanders:" 583 584config GPIO_UCB1400 585 bool "Philips UCB1400 GPIO" 586 depends on UCB1400_CORE 587 help 588 This enables support for the Philips UCB1400 GPIO pins. 589 The UCB1400 is an AC97 audio codec. 590 591comment "MODULbus GPIO expanders:" 592 593config GPIO_JANZ_TTL 594 tristate "Janz VMOD-TTL Digital IO Module" 595 depends on MFD_JANZ_CMODIO 596 help 597 This enables support for the Janz VMOD-TTL Digital IO module. 598 This driver provides support for driving the pins in output 599 mode only. Input mode is not supported. 600 601config GPIO_AB8500 602 bool "ST-Ericsson AB8500 Mixed Signal Circuit gpio functions" 603 depends on AB8500_CORE && BROKEN 604 help 605 Select this to enable the AB8500 IC GPIO driver 606 607config GPIO_TPS6586X 608 bool "TPS6586X GPIO" 609 depends on MFD_TPS6586X 610 help 611 Select this option to enable GPIO driver for the TPS6586X 612 chip family. 613 614config GPIO_TPS65910 615 bool "TPS65910 GPIO" 616 depends on MFD_TPS65910 617 help 618 Select this option to enable GPIO driver for the TPS65910 619 chip family. 620 621config GPIO_MSIC 622 bool "Intel MSIC mixed signal gpio support" 623 depends on MFD_INTEL_MSIC 624 help 625 Enable support for GPIO on intel MSIC controllers found in 626 intel MID devices 627 628endif 629