Daniel Mentz | 94787a1 | 2013-05-29 21:12:04 -0700 | [diff] [blame] | 1 | # |
| 2 | # GPIO infrastructure and drivers |
| 3 | # |
| 4 | |
| 5 | config 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 | |
| 15 | config 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 | |
| 27 | menuconfig 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 | |
| 38 | if GPIOLIB |
| 39 | |
| 40 | config 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 | |
| 51 | config 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 | |
| 66 | config GPIO_GENERIC |
| 67 | tristate |
| 68 | |
| 69 | # put drivers in the right section, in alphabetical order |
| 70 | |
| 71 | config GPIO_DA9052 |
| 72 | tristate "Dialog DA9052 GPIO" |
| 73 | depends on PMIC_DA9052 |
| 74 | help |
| 75 | Say yes here to enable the GPIO driver for the DA9052 chip. |
| 76 | |
| 77 | config GPIO_MAX730X |
| 78 | tristate |
| 79 | |
| 80 | comment "Memory mapped GPIO drivers:" |
| 81 | |
| 82 | config 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 | |
| 88 | config GPIO_IT8761E |
| 89 | tristate "IT8761E GPIO support" |
| 90 | help |
| 91 | Say yes here to support GPIO functionality of IT8761E super I/O chip. |
| 92 | |
| 93 | config GPIO_EP93XX |
| 94 | def_bool y |
| 95 | depends on ARCH_EP93XX |
| 96 | select GPIO_GENERIC |
| 97 | |
| 98 | config GPIO_MPC5200 |
| 99 | def_bool y |
| 100 | depends on PPC_MPC52xx |
| 101 | |
| 102 | config GPIO_MPC8XXX |
| 103 | bool "MPC512x/MPC8xxx GPIO support" |
| 104 | depends on PPC_MPC512x || PPC_MPC831x || PPC_MPC834x || PPC_MPC837x || \ |
| 105 | FSL_SOC_BOOKE || PPC_86xx |
| 106 | help |
| 107 | Say Y here if you're going to use hardware that connects to the |
| 108 | MPC512x/831x/834x/837x/8572/8610 GPIOs. |
| 109 | |
| 110 | config GPIO_MSM_V1 |
| 111 | tristate "Qualcomm MSM GPIO v1" |
| 112 | depends on GPIOLIB && ARCH_MSM |
| 113 | help |
| 114 | Say yes here to support the GPIO interface on ARM v6 based |
| 115 | Qualcomm MSM chips. Most of the pins on the MSM can be |
| 116 | selected for GPIO, and are controlled by this driver. |
| 117 | |
| 118 | config GPIO_MSM_V2 |
| 119 | tristate "Qualcomm MSM GPIO v2" |
| 120 | depends on GPIOLIB && ARCH_MSM |
| 121 | help |
| 122 | Say yes here to support the GPIO interface on ARM v7 based |
| 123 | Qualcomm MSM chips. Most of the pins on the MSM can be |
| 124 | selected for GPIO, and are controlled by this driver. |
| 125 | |
| 126 | config GPIO_MXC |
| 127 | def_bool y |
| 128 | depends on ARCH_MXC |
| 129 | select GPIO_GENERIC |
| 130 | select GENERIC_IRQ_CHIP |
| 131 | |
| 132 | config GPIO_MXS |
| 133 | def_bool y |
| 134 | depends on ARCH_MXS |
| 135 | select GPIO_GENERIC |
| 136 | select GENERIC_IRQ_CHIP |
| 137 | |
| 138 | config GPIO_PL061 |
| 139 | bool "PrimeCell PL061 GPIO support" |
| 140 | depends on ARM_AMBA |
| 141 | help |
| 142 | Say yes here to support the PrimeCell PL061 GPIO device |
| 143 | |
| 144 | config GPIO_XILINX |
| 145 | bool "Xilinx GPIO support" |
| 146 | depends on PPC_OF || MICROBLAZE |
| 147 | help |
| 148 | Say yes here to support the Xilinx FPGA GPIO device |
| 149 | |
Daniel Mentz | 2a9125c | 2013-05-29 21:13:18 -0700 | [diff] [blame] | 150 | config GPIO_C2K |
| 151 | def_bool y |
| 152 | depends on ARCH_M86XXX |
| 153 | bool "Comcerto 2000 GPIO support" |
| 154 | help |
| 155 | Say yes here to support the Comcerto 2000 GPIO device |
| 156 | |
Daniel Mentz | 94787a1 | 2013-05-29 21:12:04 -0700 | [diff] [blame] | 157 | config GPIO_VR41XX |
| 158 | tristate "NEC VR4100 series General-purpose I/O Uint support" |
| 159 | depends on CPU_VR41XX |
| 160 | help |
| 161 | Say yes here to support the NEC VR4100 series General-purpose I/O Uint |
| 162 | |
| 163 | config GPIO_SCH |
| 164 | tristate "Intel SCH/TunnelCreek GPIO" |
| 165 | depends on PCI && X86 |
| 166 | select MFD_CORE |
| 167 | select LPC_SCH |
| 168 | help |
| 169 | Say yes here to support GPIO interface on Intel Poulsbo SCH |
| 170 | or Intel Tunnel Creek processor. |
| 171 | The Intel SCH contains a total of 14 GPIO pins. Ten GPIOs are |
| 172 | powered by the core power rail and are turned off during sleep |
| 173 | modes (S3 and higher). The remaining four GPIOs are powered by |
| 174 | the Intel SCH suspend power supply. These GPIOs remain |
| 175 | active during S3. The suspend powered GPIOs can be used to wake the |
| 176 | system from the Suspend-to-RAM state. |
| 177 | The Intel Tunnel Creek processor has 5 GPIOs powered by the |
| 178 | core power rail and 9 from suspend power supply. |
| 179 | |
| 180 | config GPIO_U300 |
| 181 | bool "ST-Ericsson U300 COH 901 335/571 GPIO" |
| 182 | depends on GPIOLIB && ARCH_U300 |
| 183 | help |
| 184 | Say yes here to support GPIO interface on ST-Ericsson U300. |
| 185 | The names of the two IP block variants supported are |
| 186 | COH 901 335 and COH 901 571/3. They contain 3, 5 or 7 |
| 187 | ports of 8 GPIO pins each. |
| 188 | |
| 189 | config GPIO_VX855 |
| 190 | tristate "VIA VX855/VX875 GPIO" |
| 191 | depends on PCI |
| 192 | select MFD_CORE |
| 193 | select MFD_VX855 |
| 194 | help |
| 195 | Support access to the VX855/VX875 GPIO lines through the gpio library. |
| 196 | |
| 197 | This driver provides common support for accessing the device, |
| 198 | additional drivers must be enabled in order to use the |
| 199 | functionality of the device. |
| 200 | |
| 201 | comment "I2C GPIO expanders:" |
| 202 | |
| 203 | config GPIO_MAX7300 |
| 204 | tristate "Maxim MAX7300 GPIO expander" |
| 205 | depends on I2C |
| 206 | select GPIO_MAX730X |
| 207 | help |
| 208 | GPIO driver for Maxim MAX7301 I2C-based GPIO expander. |
| 209 | |
| 210 | config GPIO_MAX732X |
| 211 | tristate "MAX7319, MAX7320-7327 I2C Port Expanders" |
| 212 | depends on I2C |
| 213 | help |
| 214 | Say yes here to support the MAX7319, MAX7320-7327 series of I2C |
| 215 | Port Expanders. Each IO port on these chips has a fixed role of |
| 216 | Input (designated by 'I'), Push-Pull Output ('O'), or Open-Drain |
| 217 | Input and Output (designed by 'P'). The combinations are listed |
| 218 | below: |
| 219 | |
| 220 | 8 bits: max7319 (8I), max7320 (8O), max7321 (8P), |
| 221 | max7322 (4I4O), max7323 (4P4O) |
| 222 | |
| 223 | 16 bits: max7324 (8I8O), max7325 (8P8O), |
| 224 | max7326 (4I12O), max7327 (4P12O) |
| 225 | |
| 226 | Board setup code must specify the model to use, and the start |
| 227 | number for these GPIOs. |
| 228 | |
| 229 | config GPIO_MAX732X_IRQ |
| 230 | bool "Interrupt controller support for MAX732x" |
| 231 | depends on GPIO_MAX732X=y && GENERIC_HARDIRQS |
| 232 | help |
| 233 | Say yes here to enable the max732x to be used as an interrupt |
| 234 | controller. It requires the driver to be built in the kernel. |
| 235 | |
| 236 | config GPIO_PCA953X |
| 237 | tristate "PCA953x, PCA955x, TCA64xx, and MAX7310 I/O ports" |
| 238 | depends on I2C |
| 239 | help |
| 240 | Say yes here to provide access to several register-oriented |
| 241 | SMBus I/O expanders, made mostly by NXP or TI. Compatible |
| 242 | models include: |
| 243 | |
| 244 | 4 bits: pca9536, pca9537 |
| 245 | |
| 246 | 8 bits: max7310, pca9534, pca9538, pca9554, pca9557, |
| 247 | tca6408 |
| 248 | |
| 249 | 16 bits: pca9535, pca9539, pca9555, tca6416 |
| 250 | |
| 251 | config GPIO_PCA953X_IRQ |
| 252 | bool "Interrupt controller support for PCA953x" |
| 253 | depends on GPIO_PCA953X=y |
| 254 | help |
| 255 | Say yes here to enable the pca953x to be used as an interrupt |
| 256 | controller. It requires the driver to be built in the kernel. |
| 257 | |
| 258 | config GPIO_PCF857X |
| 259 | tristate "PCF857x, PCA{85,96}7x, and MAX732[89] I2C GPIO expanders" |
| 260 | depends on I2C |
| 261 | help |
| 262 | Say yes here to provide access to most "quasi-bidirectional" I2C |
| 263 | GPIO expanders used for additional digital outputs or inputs. |
| 264 | Most of these parts are from NXP, though TI is a second source for |
| 265 | some of them. Compatible models include: |
| 266 | |
| 267 | 8 bits: pcf8574, pcf8574a, pca8574, pca8574a, |
| 268 | pca9670, pca9672, pca9674, pca9674a, |
| 269 | max7328, max7329 |
| 270 | |
| 271 | 16 bits: pcf8575, pcf8575c, pca8575, |
| 272 | pca9671, pca9673, pca9675 |
| 273 | |
| 274 | Your board setup code will need to declare the expanders in |
| 275 | use, and assign numbers to the GPIOs they expose. Those GPIOs |
| 276 | can then be used from drivers and other kernel code, just like |
| 277 | other GPIOs, but only accessible from task contexts. |
| 278 | |
| 279 | This driver provides an in-kernel interface to those GPIOs using |
| 280 | platform-neutral GPIO calls. |
| 281 | |
| 282 | config GPIO_SX150X |
| 283 | bool "Semtech SX150x I2C GPIO expander" |
| 284 | depends on I2C=y |
| 285 | default n |
| 286 | help |
| 287 | Say yes here to provide support for Semtech SX150-series I2C |
| 288 | GPIO expanders. Compatible models include: |
| 289 | |
| 290 | 8 bits: sx1508q |
| 291 | 16 bits: sx1509q |
| 292 | |
| 293 | config GPIO_STMPE |
| 294 | bool "STMPE GPIOs" |
| 295 | depends on MFD_STMPE |
| 296 | help |
| 297 | This enables support for the GPIOs found on the STMPE I/O |
| 298 | Expanders. |
| 299 | |
| 300 | config GPIO_TC3589X |
| 301 | bool "TC3589X GPIOs" |
| 302 | depends on MFD_TC3589X |
| 303 | help |
| 304 | This enables support for the GPIOs found on the TC3589X |
| 305 | I/O Expander. |
| 306 | |
| 307 | config GPIO_TPS65912 |
| 308 | tristate "TI TPS65912 GPIO" |
| 309 | depends on (MFD_TPS65912_I2C || MFD_TPS65912_SPI) |
| 310 | help |
| 311 | This driver supports TPS65912 gpio chip |
| 312 | |
| 313 | config GPIO_TWL4030 |
| 314 | tristate "TWL4030, TWL5030, and TPS659x0 GPIOs" |
| 315 | depends on TWL4030_CORE |
| 316 | help |
| 317 | Say yes here to access the GPIO signals of various multi-function |
| 318 | power management chips from Texas Instruments. |
| 319 | |
| 320 | config GPIO_WM831X |
| 321 | tristate "WM831x GPIOs" |
| 322 | depends on MFD_WM831X |
| 323 | help |
| 324 | Say yes here to access the GPIO signals of WM831x power management |
| 325 | chips from Wolfson Microelectronics. |
| 326 | |
| 327 | config GPIO_WM8350 |
| 328 | tristate "WM8350 GPIOs" |
| 329 | depends on MFD_WM8350 |
| 330 | help |
| 331 | Say yes here to access the GPIO signals of WM8350 power management |
| 332 | chips from Wolfson Microelectronics. |
| 333 | |
| 334 | config GPIO_WM8994 |
| 335 | tristate "WM8994 GPIOs" |
| 336 | depends on MFD_WM8994 |
| 337 | help |
| 338 | Say yes here to access the GPIO signals of WM8994 audio hub |
| 339 | CODECs from Wolfson Microelectronics. |
| 340 | |
| 341 | config GPIO_ADP5520 |
| 342 | tristate "GPIO Support for ADP5520 PMIC" |
| 343 | depends on PMIC_ADP5520 |
| 344 | help |
| 345 | This option enables support for on-chip GPIO found |
| 346 | on Analog Devices ADP5520 PMICs. |
| 347 | |
| 348 | config GPIO_ADP5588 |
| 349 | tristate "ADP5588 I2C GPIO expander" |
| 350 | depends on I2C |
| 351 | help |
| 352 | This option enables support for 18 GPIOs found |
| 353 | on Analog Devices ADP5588 GPIO Expanders. |
| 354 | |
| 355 | config GPIO_ADP5588_IRQ |
| 356 | bool "Interrupt controller support for ADP5588" |
| 357 | depends on GPIO_ADP5588=y |
| 358 | help |
| 359 | Say yes here to enable the adp5588 to be used as an interrupt |
| 360 | controller. It requires the driver to be built in the kernel. |
| 361 | |
| 362 | comment "PCI GPIO expanders:" |
| 363 | |
| 364 | config GPIO_CS5535 |
| 365 | tristate "AMD CS5535/CS5536 GPIO support" |
| 366 | depends on PCI && X86 && !CS5535_GPIO && MFD_CS5535 |
| 367 | help |
| 368 | The AMD CS5535 and CS5536 southbridges support 28 GPIO pins that |
| 369 | can be used for quite a number of things. The CS5535/6 is found on |
| 370 | AMD Geode and Lemote Yeeloong devices. |
| 371 | |
| 372 | If unsure, say N. |
| 373 | |
| 374 | config GPIO_BT8XX |
| 375 | tristate "BT8XX GPIO abuser" |
| 376 | depends on PCI && VIDEO_BT848=n |
| 377 | help |
| 378 | The BT8xx frame grabber chip has 24 GPIO pins than can be abused |
| 379 | as a cheap PCI GPIO card. |
| 380 | |
| 381 | This chip can be found on Miro, Hauppauge and STB TV-cards. |
| 382 | |
| 383 | The card needs to be physically altered for using it as a |
| 384 | GPIO card. For more information on how to build a GPIO card |
| 385 | from a BT8xx TV card, see the documentation file at |
| 386 | Documentation/bt8xxgpio.txt |
| 387 | |
| 388 | If unsure, say N. |
| 389 | |
| 390 | config GPIO_LANGWELL |
| 391 | bool "Intel Langwell/Penwell GPIO support" |
| 392 | depends on PCI && X86 |
| 393 | help |
| 394 | Say Y here to support Intel Langwell/Penwell GPIO. |
| 395 | |
| 396 | config GPIO_PCH |
| 397 | tristate "Intel EG20T PCH/LAPIS Semiconductor IOH(ML7223/ML7831) GPIO" |
| 398 | depends on PCI && X86 |
| 399 | select GENERIC_IRQ_CHIP |
| 400 | help |
| 401 | This driver is for PCH(Platform controller Hub) GPIO of Intel Topcliff |
| 402 | which is an IOH(Input/Output Hub) for x86 embedded processor. |
| 403 | This driver can access PCH GPIO device. |
| 404 | |
| 405 | This driver also can be used for LAPIS Semiconductor IOH(Input/ |
| 406 | Output Hub), ML7223 and ML7831. |
| 407 | ML7223 IOH is for MP(Media Phone) use. |
| 408 | ML7831 IOH is for general purpose use. |
| 409 | ML7223/ML7831 is companion chip for Intel Atom E6xx series. |
| 410 | ML7223/ML7831 is completely compatible for Intel EG20T PCH. |
| 411 | |
| 412 | config GPIO_ML_IOH |
| 413 | tristate "OKI SEMICONDUCTOR ML7213 IOH GPIO support" |
| 414 | depends on PCI |
| 415 | select GENERIC_IRQ_CHIP |
| 416 | help |
| 417 | ML7213 is companion chip for Intel Atom E6xx series. |
| 418 | This driver can be used for OKI SEMICONDUCTOR ML7213 IOH(Input/Output |
| 419 | Hub) which is for IVI(In-Vehicle Infotainment) use. |
| 420 | This driver can access the IOH's GPIO device. |
| 421 | |
| 422 | config GPIO_TIMBERDALE |
| 423 | bool "Support for timberdale GPIO IP" |
| 424 | depends on MFD_TIMBERDALE && HAS_IOMEM |
| 425 | ---help--- |
| 426 | Add support for the GPIO IP in the timberdale FPGA. |
| 427 | |
| 428 | config GPIO_RDC321X |
| 429 | tristate "RDC R-321x GPIO support" |
| 430 | depends on PCI |
| 431 | select MFD_CORE |
| 432 | select MFD_RDC321X |
| 433 | help |
| 434 | Support for the RDC R321x SoC GPIOs over southbridge |
| 435 | PCI configuration space. |
| 436 | |
| 437 | comment "SPI GPIO expanders:" |
| 438 | |
| 439 | config GPIO_MAX7301 |
| 440 | tristate "Maxim MAX7301 GPIO expander" |
| 441 | depends on SPI_MASTER |
| 442 | select GPIO_MAX730X |
| 443 | help |
| 444 | GPIO driver for Maxim MAX7301 SPI-based GPIO expander. |
| 445 | |
| 446 | config GPIO_MCP23S08 |
| 447 | tristate "Microchip MCP23xxx I/O expander" |
| 448 | depends on SPI_MASTER || I2C |
| 449 | help |
| 450 | SPI/I2C driver for Microchip MCP23S08/MCP23S17/MCP23008/MCP23017 |
| 451 | I/O expanders. |
| 452 | This provides a GPIO interface supporting inputs and outputs. |
| 453 | |
| 454 | config GPIO_MC33880 |
| 455 | tristate "Freescale MC33880 high-side/low-side switch" |
| 456 | depends on SPI_MASTER |
| 457 | help |
| 458 | SPI driver for Freescale MC33880 high-side/low-side switch. |
| 459 | This provides GPIO interface supporting inputs and outputs. |
| 460 | |
| 461 | config GPIO_74X164 |
| 462 | tristate "74x164 serial-in/parallel-out 8-bits shift register" |
| 463 | depends on SPI_MASTER |
| 464 | help |
| 465 | Platform driver for 74x164 compatible serial-in/parallel-out |
| 466 | 8-outputs shift registers. This driver can be used to provide access |
| 467 | to more gpio outputs. |
| 468 | |
| 469 | comment "AC97 GPIO expanders:" |
| 470 | |
| 471 | config GPIO_UCB1400 |
| 472 | bool "Philips UCB1400 GPIO" |
| 473 | depends on UCB1400_CORE |
| 474 | help |
| 475 | This enables support for the Philips UCB1400 GPIO pins. |
| 476 | The UCB1400 is an AC97 audio codec. |
| 477 | |
| 478 | comment "MODULbus GPIO expanders:" |
| 479 | |
| 480 | config GPIO_JANZ_TTL |
| 481 | tristate "Janz VMOD-TTL Digital IO Module" |
| 482 | depends on MFD_JANZ_CMODIO |
| 483 | help |
| 484 | This enables support for the Janz VMOD-TTL Digital IO module. |
| 485 | This driver provides support for driving the pins in output |
| 486 | mode only. Input mode is not supported. |
| 487 | |
| 488 | config GPIO_AB8500 |
| 489 | bool "ST-Ericsson AB8500 Mixed Signal Circuit gpio functions" |
| 490 | depends on AB8500_CORE && BROKEN |
| 491 | help |
| 492 | Select this to enable the AB8500 IC GPIO driver |
| 493 | |
| 494 | config GPIO_TPS65910 |
| 495 | bool "TPS65910 GPIO" |
| 496 | depends on MFD_TPS65910 |
| 497 | help |
| 498 | Select this option to enable GPIO driver for the TPS65910 |
| 499 | chip family. |
| 500 | endif |