1# 2# GPIO infrastructure and drivers 3# 4 5config ARCH_WANT_OPTIONAL_GPIOLIB 6 bool 7 help 8 Select this config option from the architecture Kconfig, if 9 it is possible to use gpiolib on the architecture, but let the 10 user decide whether to actually build it or not. 11 Select this instead of ARCH_REQUIRE_GPIOLIB, if your architecture does 12 not depend on GPIOs being available, but rather let the user 13 decide whether he needs it or not. 14 15config ARCH_REQUIRE_GPIOLIB 16 bool 17 select GPIOLIB 18 help 19 Platforms select gpiolib if they use this infrastructure 20 for all their GPIOs, usually starting with ones integrated 21 into SOC processors. 22 Selecting this from the architecture code will cause the gpiolib 23 code to always get built in. 24 25 26 27menuconfig GPIOLIB 28 bool "GPIO Support" 29 depends on ARCH_WANT_OPTIONAL_GPIOLIB || ARCH_REQUIRE_GPIOLIB 30 select GENERIC_GPIO 31 help 32 This enables GPIO support through the generic GPIO library. 33 You only need to enable this, if you also want to enable 34 one or more of the GPIO drivers below. 35 36 If unsure, say N. 37 38if GPIOLIB 39 40config DEBUG_GPIO 41 bool "Debug GPIO calls" 42 depends on DEBUG_KERNEL 43 help 44 Say Y here to add some extra checks and diagnostics to GPIO calls. 45 These checks help ensure that GPIOs have been properly initialized 46 before they are used, and that sleeping calls are not made from 47 non-sleeping contexts. They can make bitbanged serial protocols 48 slower. The diagnostics help catch the type of setup errors 49 that are most common when setting up new platforms or boards. 50 51config GPIO_SYSFS 52 bool "/sys/class/gpio/... (sysfs interface)" 53 depends on SYSFS && EXPERIMENTAL 54 help 55 Say Y here to add a sysfs interface for GPIOs. 56 57 This is mostly useful to work around omissions in a system's 58 kernel support. Those are common in custom and semicustom 59 hardware assembled using standard kernels with a minimum of 60 custom patches. In those cases, userspace code may import 61 a given GPIO from the kernel, if no kernel driver requested it. 62 63 Kernel drivers may also request that a particular GPIO be 64 exported to userspace; this can be useful when debugging. 65 66config GPIO_GENERIC 67 tristate 68 69# put drivers in the right section, in alphabetical order 70 71config GPIO_DA9052 72 tristate "Dialog DA9052 GPIO" 73 depends on PMIC_DA9052 && BROKEN 74 help 75 Say yes here to enable the GPIO driver for the DA9052 chip. 76 77config GPIO_MAX730X 78 tristate 79 80comment "Memory mapped GPIO drivers:" 81 82config GPIO_GENERIC_PLATFORM 83 tristate "Generic memory-mapped GPIO controller support (MMIO platform device)" 84 select GPIO_GENERIC 85 help 86 Say yes here to support basic platform_device memory-mapped GPIO controllers. 87 88config GPIO_IT8761E 89 tristate "IT8761E GPIO support" 90 depends on X86 # unconditional access to IO space. 91 help 92 Say yes here to support GPIO functionality of IT8761E super I/O chip. 93 94config GPIO_EP93XX 95 def_bool y 96 depends on ARCH_EP93XX 97 select GPIO_GENERIC 98 99config GPIO_MPC5200 100 def_bool y 101 depends on PPC_MPC52xx 102 103config GPIO_MPC8XXX 104 bool "MPC512x/MPC8xxx GPIO support" 105 depends on PPC_MPC512x || PPC_MPC831x || PPC_MPC834x || PPC_MPC837x || \ 106 FSL_SOC_BOOKE || PPC_86xx 107 help 108 Say Y here if you're going to use hardware that connects to the 109 MPC512x/831x/834x/837x/8572/8610 GPIOs. 110 111config GPIO_MSM_V1 112 tristate "Qualcomm MSM GPIO v1" 113 depends on GPIOLIB && ARCH_MSM 114 help 115 Say yes here to support the GPIO interface on ARM v6 based 116 Qualcomm MSM chips. Most of the pins on the MSM can be 117 selected for GPIO, and are controlled by this driver. 118 119config GPIO_MSM_V2 120 tristate "Qualcomm MSM GPIO v2" 121 depends on GPIOLIB && ARCH_MSM 122 help 123 Say yes here to support the GPIO interface on ARM v7 based 124 Qualcomm MSM chips. Most of the pins on the MSM can be 125 selected for GPIO, and are controlled by this driver. 126 127config GPIO_MXC 128 def_bool y 129 depends on ARCH_MXC 130 select GPIO_GENERIC 131 select GENERIC_IRQ_CHIP 132 133config GPIO_MXS 134 def_bool y 135 depends on ARCH_MXS 136 select GPIO_GENERIC 137 select GENERIC_IRQ_CHIP 138 139config GPIO_PL061 140 bool "PrimeCell PL061 GPIO support" 141 depends on ARM_AMBA 142 select GENERIC_IRQ_CHIP 143 help 144 Say yes here to support the PrimeCell PL061 GPIO device 145 146config GPIO_PXA 147 bool "PXA GPIO support" 148 depends on ARCH_PXA || ARCH_MMP 149 help 150 Say yes here to support the PXA GPIO device 151 152config GPIO_STA2X11 153 bool "STA2x11/ConneXt GPIO support" 154 depends on MFD_STA2X11 155 select GENERIC_IRQ_CHIP 156 help 157 Say yes here to support the STA2x11/ConneXt GPIO device. 158 The GPIO module has 128 GPIO pins with alternate functions. 159 160config GPIO_XILINX 161 bool "Xilinx GPIO support" 162 depends on PPC_OF || MICROBLAZE 163 help 164 Say yes here to support the Xilinx FPGA GPIO device 165 166config GPIO_VR41XX 167 tristate "NEC VR4100 series General-purpose I/O Uint support" 168 depends on CPU_VR41XX 169 help 170 Say yes here to support the NEC VR4100 series General-purpose I/O Uint 171 172config GPIO_SCH 173 tristate "Intel SCH/TunnelCreek/Centerton GPIO" 174 depends on PCI && X86 175 select MFD_CORE 176 select LPC_SCH 177 help 178 Say yes here to support GPIO interface on Intel Poulsbo SCH, 179 Intel Tunnel Creek processor or Intel Centerton processor. 180 The Intel SCH contains a total of 14 GPIO pins. Ten GPIOs are 181 powered by the core power rail and are turned off during sleep 182 modes (S3 and higher). The remaining four GPIOs are powered by 183 the Intel SCH suspend power supply. These GPIOs remain 184 active during S3. The suspend powered GPIOs can be used to wake the 185 system from the Suspend-to-RAM state. 186 The Intel Tunnel Creek processor has 5 GPIOs powered by the 187 core power rail and 9 from suspend power supply. 188 The Intel Centerton processor has a total of 30 GPIO pins. 189 Twenty-one are powered by the core power rail and 9 from the 190 suspend power supply. 191 192config GPIO_ICH 193 tristate "Intel ICH GPIO" 194 depends on PCI && X86 195 select MFD_CORE 196 select LPC_ICH 197 help 198 Say yes here to support the GPIO functionality of a number of Intel 199 ICH-based chipsets. Currently supported devices: ICH6, ICH7, ICH8 200 ICH9, ICH10, Series 5/3400 (eg Ibex Peak), Series 6/C200 (eg 201 Cougar Point), NM10 (Tiger Point), and 3100 (Whitmore Lake). 202 203 If unsure, say N. 204 205config GPIO_VX855 206 tristate "VIA VX855/VX875 GPIO" 207 depends on PCI 208 select MFD_CORE 209 select MFD_VX855 210 help 211 Support access to the VX855/VX875 GPIO lines through the gpio library. 212 213 This driver provides common support for accessing the device, 214 additional drivers must be enabled in order to use the 215 functionality of the device. 216 217config GPIO_GE_FPGA 218 bool "GE FPGA based GPIO" 219 depends on GE_FPGA 220 help 221 Support for common GPIO functionality provided on some GE Single Board 222 Computers. 223 224 This driver provides basic support (configure as input or output, read 225 and write pin state) for GPIO implemented in a number of GE single 226 board computers. 227 228comment "I2C GPIO expanders:" 229 230config GPIO_MAX7300 231 tristate "Maxim MAX7300 GPIO expander" 232 depends on I2C 233 select GPIO_MAX730X 234 help 235 GPIO driver for Maxim MAX7301 I2C-based GPIO expander. 236 237config GPIO_MAX732X 238 tristate "MAX7319, MAX7320-7327 I2C Port Expanders" 239 depends on I2C 240 help 241 Say yes here to support the MAX7319, MAX7320-7327 series of I2C 242 Port Expanders. Each IO port on these chips has a fixed role of 243 Input (designated by 'I'), Push-Pull Output ('O'), or Open-Drain 244 Input and Output (designed by 'P'). The combinations are listed 245 below: 246 247 8 bits: max7319 (8I), max7320 (8O), max7321 (8P), 248 max7322 (4I4O), max7323 (4P4O) 249 250 16 bits: max7324 (8I8O), max7325 (8P8O), 251 max7326 (4I12O), max7327 (4P12O) 252 253 Board setup code must specify the model to use, and the start 254 number for these GPIOs. 255 256config GPIO_MAX732X_IRQ 257 bool "Interrupt controller support for MAX732x" 258 depends on GPIO_MAX732X=y && GENERIC_HARDIRQS 259 help 260 Say yes here to enable the max732x to be used as an interrupt 261 controller. It requires the driver to be built in the kernel. 262 263config GPIO_MC9S08DZ60 264 bool "MX35 3DS BOARD MC9S08DZ60 GPIO functions" 265 depends on I2C && MACH_MX35_3DS 266 help 267 Select this to enable the MC9S08DZ60 GPIO driver 268 269config GPIO_PCA953X 270 tristate "PCA953x, PCA955x, TCA64xx, and MAX7310 I/O ports" 271 depends on I2C 272 help 273 Say yes here to provide access to several register-oriented 274 SMBus I/O expanders, made mostly by NXP or TI. Compatible 275 models include: 276 277 4 bits: pca9536, pca9537 278 279 8 bits: max7310, pca9534, pca9538, pca9554, pca9557, 280 tca6408 281 282 16 bits: pca9535, pca9539, pca9555, tca6416 283 284config GPIO_PCA953X_IRQ 285 bool "Interrupt controller support for PCA953x" 286 depends on GPIO_PCA953X=y 287 help 288 Say yes here to enable the pca953x to be used as an interrupt 289 controller. It requires the driver to be built in the kernel. 290 291config GPIO_PCF857X 292 tristate "PCF857x, PCA{85,96}7x, and MAX732[89] I2C GPIO expanders" 293 depends on I2C 294 help 295 Say yes here to provide access to most "quasi-bidirectional" I2C 296 GPIO expanders used for additional digital outputs or inputs. 297 Most of these parts are from NXP, though TI is a second source for 298 some of them. Compatible models include: 299 300 8 bits: pcf8574, pcf8574a, pca8574, pca8574a, 301 pca9670, pca9672, pca9674, pca9674a, 302 max7328, max7329 303 304 16 bits: pcf8575, pcf8575c, pca8575, 305 pca9671, pca9673, pca9675 306 307 Your board setup code will need to declare the expanders in 308 use, and assign numbers to the GPIOs they expose. Those GPIOs 309 can then be used from drivers and other kernel code, just like 310 other GPIOs, but only accessible from task contexts. 311 312 This driver provides an in-kernel interface to those GPIOs using 313 platform-neutral GPIO calls. 314 315config GPIO_SX150X 316 bool "Semtech SX150x I2C GPIO expander" 317 depends on I2C=y 318 default n 319 help 320 Say yes here to provide support for Semtech SX150-series I2C 321 GPIO expanders. Compatible models include: 322 323 8 bits: sx1508q 324 16 bits: sx1509q 325 326config GPIO_STMPE 327 bool "STMPE GPIOs" 328 depends on MFD_STMPE 329 help 330 This enables support for the GPIOs found on the STMPE I/O 331 Expanders. 332 333config GPIO_TC3589X 334 bool "TC3589X GPIOs" 335 depends on MFD_TC3589X 336 help 337 This enables support for the GPIOs found on the TC3589X 338 I/O Expander. 339 340config GPIO_TPS65912 341 tristate "TI TPS65912 GPIO" 342 depends on (MFD_TPS65912_I2C || MFD_TPS65912_SPI) 343 help 344 This driver supports TPS65912 gpio chip 345 346config GPIO_TWL4030 347 tristate "TWL4030, TWL5030, and TPS659x0 GPIOs" 348 depends on TWL4030_CORE 349 help 350 Say yes here to access the GPIO signals of various multi-function 351 power management chips from Texas Instruments. 352 353config GPIO_WM831X 354 tristate "WM831x GPIOs" 355 depends on MFD_WM831X 356 help 357 Say yes here to access the GPIO signals of WM831x power management 358 chips from Wolfson Microelectronics. 359 360config GPIO_WM8350 361 tristate "WM8350 GPIOs" 362 depends on MFD_WM8350 363 help 364 Say yes here to access the GPIO signals of WM8350 power management 365 chips from Wolfson Microelectronics. 366 367config GPIO_WM8994 368 tristate "WM8994 GPIOs" 369 depends on MFD_WM8994 370 help 371 Say yes here to access the GPIO signals of WM8994 audio hub 372 CODECs from Wolfson Microelectronics. 373 374config GPIO_ADP5520 375 tristate "GPIO Support for ADP5520 PMIC" 376 depends on PMIC_ADP5520 377 help 378 This option enables support for on-chip GPIO found 379 on Analog Devices ADP5520 PMICs. 380 381config GPIO_ADP5588 382 tristate "ADP5588 I2C GPIO expander" 383 depends on I2C 384 help 385 This option enables support for 18 GPIOs found 386 on Analog Devices ADP5588 GPIO Expanders. 387 388config GPIO_ADP5588_IRQ 389 bool "Interrupt controller support for ADP5588" 390 depends on GPIO_ADP5588=y 391 help 392 Say yes here to enable the adp5588 to be used as an interrupt 393 controller. It requires the driver to be built in the kernel. 394 395comment "PCI GPIO expanders:" 396 397config GPIO_CS5535 398 tristate "AMD CS5535/CS5536 GPIO support" 399 depends on PCI && X86 && MFD_CS5535 400 help 401 The AMD CS5535 and CS5536 southbridges support 28 GPIO pins that 402 can be used for quite a number of things. The CS5535/6 is found on 403 AMD Geode and Lemote Yeeloong devices. 404 405 If unsure, say N. 406 407config GPIO_BT8XX 408 tristate "BT8XX GPIO abuser" 409 depends on PCI && VIDEO_BT848=n 410 help 411 The BT8xx frame grabber chip has 24 GPIO pins than can be abused 412 as a cheap PCI GPIO card. 413 414 This chip can be found on Miro, Hauppauge and STB TV-cards. 415 416 The card needs to be physically altered for using it as a 417 GPIO card. For more information on how to build a GPIO card 418 from a BT8xx TV card, see the documentation file at 419 Documentation/bt8xxgpio.txt 420 421 If unsure, say N. 422 423config GPIO_LANGWELL 424 bool "Intel Langwell/Penwell GPIO support" 425 depends on PCI && X86 426 help 427 Say Y here to support Intel Langwell/Penwell GPIO. 428 429config GPIO_PCH 430 tristate "Intel EG20T PCH/LAPIS Semiconductor IOH(ML7223/ML7831) GPIO" 431 depends on PCI && X86 432 select GENERIC_IRQ_CHIP 433 help 434 This driver is for PCH(Platform controller Hub) GPIO of Intel Topcliff 435 which is an IOH(Input/Output Hub) for x86 embedded processor. 436 This driver can access PCH GPIO device. 437 438 This driver also can be used for LAPIS Semiconductor IOH(Input/ 439 Output Hub), ML7223 and ML7831. 440 ML7223 IOH is for MP(Media Phone) use. 441 ML7831 IOH is for general purpose use. 442 ML7223/ML7831 is companion chip for Intel Atom E6xx series. 443 ML7223/ML7831 is completely compatible for Intel EG20T PCH. 444 445config GPIO_ML_IOH 446 tristate "OKI SEMICONDUCTOR ML7213 IOH GPIO support" 447 depends on PCI 448 select GENERIC_IRQ_CHIP 449 help 450 ML7213 is companion chip for Intel Atom E6xx series. 451 This driver can be used for OKI SEMICONDUCTOR ML7213 IOH(Input/Output 452 Hub) which is for IVI(In-Vehicle Infotainment) use. 453 This driver can access the IOH's GPIO device. 454 455config GPIO_SODAVILLE 456 bool "Intel Sodaville GPIO support" 457 depends on X86 && PCI && OF 458 select GPIO_GENERIC 459 select GENERIC_IRQ_CHIP 460 help 461 Say Y here to support Intel Sodaville GPIO. 462 463config GPIO_TIMBERDALE 464 bool "Support for timberdale GPIO IP" 465 depends on MFD_TIMBERDALE && HAS_IOMEM 466 ---help--- 467 Add support for the GPIO IP in the timberdale FPGA. 468 469config GPIO_RDC321X 470 tristate "RDC R-321x GPIO support" 471 depends on PCI 472 select MFD_CORE 473 select MFD_RDC321X 474 help 475 Support for the RDC R321x SoC GPIOs over southbridge 476 PCI configuration space. 477 478comment "SPI GPIO expanders:" 479 480config GPIO_MAX7301 481 tristate "Maxim MAX7301 GPIO expander" 482 depends on SPI_MASTER 483 select GPIO_MAX730X 484 help 485 GPIO driver for Maxim MAX7301 SPI-based GPIO expander. 486 487config GPIO_MCP23S08 488 tristate "Microchip MCP23xxx I/O expander" 489 depends on SPI_MASTER || I2C 490 help 491 SPI/I2C driver for Microchip MCP23S08/MCP23S17/MCP23008/MCP23017 492 I/O expanders. 493 This provides a GPIO interface supporting inputs and outputs. 494 495config GPIO_MC33880 496 tristate "Freescale MC33880 high-side/low-side switch" 497 depends on SPI_MASTER 498 help 499 SPI driver for Freescale MC33880 high-side/low-side switch. 500 This provides GPIO interface supporting inputs and outputs. 501 502config GPIO_74X164 503 tristate "74x164 serial-in/parallel-out 8-bits shift register" 504 depends on SPI_MASTER 505 help 506 Platform driver for 74x164 compatible serial-in/parallel-out 507 8-outputs shift registers. This driver can be used to provide access 508 to more gpio outputs. 509 510comment "AC97 GPIO expanders:" 511 512config GPIO_UCB1400 513 bool "Philips UCB1400 GPIO" 514 depends on UCB1400_CORE 515 help 516 This enables support for the Philips UCB1400 GPIO pins. 517 The UCB1400 is an AC97 audio codec. 518 519comment "MODULbus GPIO expanders:" 520 521config GPIO_JANZ_TTL 522 tristate "Janz VMOD-TTL Digital IO Module" 523 depends on MFD_JANZ_CMODIO 524 help 525 This enables support for the Janz VMOD-TTL Digital IO module. 526 This driver provides support for driving the pins in output 527 mode only. Input mode is not supported. 528 529config GPIO_AB8500 530 bool "ST-Ericsson AB8500 Mixed Signal Circuit gpio functions" 531 depends on AB8500_CORE && BROKEN 532 help 533 Select this to enable the AB8500 IC GPIO driver 534 535config GPIO_TPS65910 536 bool "TPS65910 GPIO" 537 depends on MFD_TPS65910 538 help 539 Select this option to enable GPIO driver for the TPS65910 540 chip family. 541endif 542