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David Brownella9c5fff2008-02-04 22:28:17 -08001#
David Brownell926b1e22010-06-29 15:05:37 -07002# platform-neutral GPIO infrastructure and expanders
David Brownella9c5fff2008-02-04 22:28:17 -08003#
4
Michael Buesch7444a722008-07-25 01:46:11 -07005config ARCH_WANT_OPTIONAL_GPIOLIB
David Brownella9c5fff2008-02-04 22:28:17 -08006 bool
7 help
Michael Buesch7444a722008-07-25 01:46:11 -07008 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
David Brownella9c5fff2008-02-04 22:28:17 -080019 Platforms select gpiolib if they use this infrastructure
20 for all their GPIOs, usually starting with ones integrated
21 into SOC processors.
Michael Buesch7444a722008-07-25 01:46:11 -070022 Selecting this from the architecture code will cause the gpiolib
23 code to always get built in.
David Brownella9c5fff2008-02-04 22:28:17 -080024
Michael Buesch7444a722008-07-25 01:46:11 -070025
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 expansion card drivers below.
35
36 If unsure, say N.
37
38if GPIOLIB
David Brownella9c5fff2008-02-04 22:28:17 -080039
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.
Matt LaPlante692105b2009-01-26 11:12:25 +010045 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
David Brownella9c5fff2008-02-04 22:28:17 -080048 slower. The diagnostics help catch the type of setup errors
49 that are most common when setting up new platforms or boards.
50
David Brownelld8f388d2008-07-25 01:46:07 -070051config 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
David Brownella9c5fff2008-02-04 22:28:17 -080066# put expanders in the right section, in alphabetical order
67
Wolfram Sange9528052010-03-05 13:44:33 -080068config GPIO_MAX730X
69 tristate
70
John Linn0bcb6062008-11-12 13:25:38 -080071comment "Memory mapped GPIO expanders:"
72
Anton Vorontsovaeec56e2010-10-27 15:33:15 -070073config GPIO_BASIC_MMIO
74 tristate "Basic memory-mapped GPIO controllers support"
75 help
76 Say yes here to support basic memory-mapped GPIO controllers.
77
Denis Turischev9cc0cb32010-03-05 13:44:39 -080078config GPIO_IT8761E
79 tristate "IT8761E GPIO support"
80 depends on GPIOLIB
81 help
82 Say yes here to support GPIO functionality of IT8761E super I/O chip.
83
Baruch Siach1e9c2852009-06-18 16:48:58 -070084config GPIO_PL061
85 bool "PrimeCell PL061 GPIO support"
86 depends on ARM_AMBA
87 help
88 Say yes here to support the PrimeCell PL061 GPIO device
89
John Linn0bcb6062008-11-12 13:25:38 -080090config GPIO_XILINX
91 bool "Xilinx GPIO support"
Michal Simek6fa612b2009-05-11 15:49:12 +020092 depends on PPC_OF || MICROBLAZE
John Linn0bcb6062008-11-12 13:25:38 -080093 help
94 Say yes here to support the Xilinx FPGA GPIO device
95
Yoichi Yuasa27fdd322009-06-29 11:11:05 +090096config GPIO_VR41XX
97 tristate "NEC VR4100 series General-purpose I/O Uint support"
98 depends on CPU_VR41XX
99 help
100 Say yes here to support the NEC VR4100 series General-purpose I/O Uint
101
Denis Turischevbe9b06b2010-03-02 10:48:55 +0100102config GPIO_SCH
Denis Turischevf04ddfc2011-03-14 12:53:05 +0200103 tristate "Intel SCH/TunnelCreek GPIO"
Thomas Gleixner61ab3fe2011-03-17 19:32:46 +0000104 depends on GPIOLIB && PCI && X86
Randy Dunlap860fb8c2010-03-05 09:43:06 -0800105 select MFD_CORE
Denis Turischevbe9b06b2010-03-02 10:48:55 +0100106 select LPC_SCH
107 help
Denis Turischevf04ddfc2011-03-14 12:53:05 +0200108 Say yes here to support GPIO interface on Intel Poulsbo SCH
109 or Intel Tunnel Creek processor.
Denis Turischevbe9b06b2010-03-02 10:48:55 +0100110 The Intel SCH contains a total of 14 GPIO pins. Ten GPIOs are
111 powered by the core power rail and are turned off during sleep
112 modes (S3 and higher). The remaining four GPIOs are powered by
113 the Intel SCH suspend power supply. These GPIOs remain
114 active during S3. The suspend powered GPIOs can be used to wake the
115 system from the Suspend-to-RAM state.
Denis Turischevf04ddfc2011-03-14 12:53:05 +0200116 The Intel Tunnel Creek processor has 5 GPIOs powered by the
117 core power rail and 9 from suspend power supply.
Denis Turischevbe9b06b2010-03-02 10:48:55 +0100118
119 This driver can also be built as a module. If so, the module
120 will be called sch-gpio.
121
Daniel Drake99ea2622010-09-30 21:55:48 +0100122config GPIO_VX855
123 tristate "VIA VX855/VX875 GPIO"
Randy Dunlap32518862011-01-12 17:00:22 -0800124 depends on GPIOLIB && MFD_SUPPORT && PCI
Daniel Drake99ea2622010-09-30 21:55:48 +0100125 select MFD_CORE
126 select MFD_VX855
127 help
128 Support access to the VX855/VX875 GPIO lines through the gpio library.
129
130 This driver provides common support for accessing the device,
131 additional drivers must be enabled in order to use the
132 functionality of the device.
133
David Brownella9c5fff2008-02-04 22:28:17 -0800134comment "I2C GPIO expanders:"
135
Wolfram Sange9528052010-03-05 13:44:33 -0800136config GPIO_MAX7300
137 tristate "Maxim MAX7300 GPIO expander"
138 depends on I2C
139 select GPIO_MAX730X
140 help
141 GPIO driver for Maxim MAX7301 I2C-based GPIO expander.
142
Eric Miaobbcd6d52008-07-25 01:46:14 -0700143config GPIO_MAX732X
144 tristate "MAX7319, MAX7320-7327 I2C Port Expanders"
145 depends on I2C
146 help
147 Say yes here to support the MAX7319, MAX7320-7327 series of I2C
148 Port Expanders. Each IO port on these chips has a fixed role of
149 Input (designated by 'I'), Push-Pull Output ('O'), or Open-Drain
150 Input and Output (designed by 'P'). The combinations are listed
151 below:
152
153 8 bits: max7319 (8I), max7320 (8O), max7321 (8P),
154 max7322 (4I4O), max7323 (4P4O)
155
156 16 bits: max7324 (8I8O), max7325 (8P8O),
157 max7326 (4I12O), max7327 (4P12O)
158
159 Board setup code must specify the model to use, and the start
160 number for these GPIOs.
161
Marc Zyngiera80a0bb2010-05-26 14:42:16 -0700162config GPIO_MAX732X_IRQ
163 bool "Interrupt controller support for MAX732x"
164 depends on GPIO_MAX732X=y && GENERIC_HARDIRQS
165 help
166 Say yes here to enable the max732x to be used as an interrupt
167 controller. It requires the driver to be built in the kernel.
168
Guennadi Liakhovetskif3dc3632008-02-06 01:39:03 -0800169config GPIO_PCA953X
David Brownellab5dc372009-01-06 14:42:27 -0800170 tristate "PCA953x, PCA955x, TCA64xx, and MAX7310 I/O ports"
eric miao9e60fdc2008-02-04 22:28:26 -0800171 depends on I2C
172 help
David Brownell7059d4b2008-07-04 09:59:37 -0700173 Say yes here to provide access to several register-oriented
174 SMBus I/O expanders, made mostly by NXP or TI. Compatible
175 models include:
176
177 4 bits: pca9536, pca9537
178
David Brownellab5dc372009-01-06 14:42:27 -0800179 8 bits: max7310, pca9534, pca9538, pca9554, pca9557,
180 tca6408
David Brownell7059d4b2008-07-04 09:59:37 -0700181
David Brownellab5dc372009-01-06 14:42:27 -0800182 16 bits: pca9535, pca9539, pca9555, tca6416
eric miao9e60fdc2008-02-04 22:28:26 -0800183
184 This driver can also be built as a module. If so, the module
Guennadi Liakhovetskif3dc3632008-02-06 01:39:03 -0800185 will be called pca953x.
eric miao9e60fdc2008-02-04 22:28:26 -0800186
Marc Zyngier89ea8bb2010-03-05 13:44:36 -0800187config GPIO_PCA953X_IRQ
188 bool "Interrupt controller support for PCA953x"
189 depends on GPIO_PCA953X=y
190 help
191 Say yes here to enable the pca953x to be used as an interrupt
192 controller. It requires the driver to be built in the kernel.
193
David Brownell15fae372008-02-04 22:28:24 -0800194config GPIO_PCF857X
David Brownell1673ad52008-07-21 14:21:34 -0700195 tristate "PCF857x, PCA{85,96}7x, and MAX732[89] I2C GPIO expanders"
David Brownell15fae372008-02-04 22:28:24 -0800196 depends on I2C
197 help
198 Say yes here to provide access to most "quasi-bidirectional" I2C
199 GPIO expanders used for additional digital outputs or inputs.
200 Most of these parts are from NXP, though TI is a second source for
201 some of them. Compatible models include:
202
203 8 bits: pcf8574, pcf8574a, pca8574, pca8574a,
David Brownell1673ad52008-07-21 14:21:34 -0700204 pca9670, pca9672, pca9674, pca9674a,
205 max7328, max7329
David Brownell15fae372008-02-04 22:28:24 -0800206
207 16 bits: pcf8575, pcf8575c, pca8575,
208 pca9671, pca9673, pca9675
209
210 Your board setup code will need to declare the expanders in
211 use, and assign numbers to the GPIOs they expose. Those GPIOs
212 can then be used from drivers and other kernel code, just like
213 other GPIOs, but only accessible from task contexts.
214
215 This driver provides an in-kernel interface to those GPIOs using
216 platform-neutral GPIO calls.
217
Gregory Beanc34f16b2010-08-10 18:02:27 -0700218config GPIO_SX150X
219 bool "Semtech SX150x I2C GPIO expander"
220 depends on I2C=y
221 default n
222 help
223 Say yes here to provide support for Semtech SX150-series I2C
224 GPIO expanders. Compatible models include:
225
226 8 bits: sx1508q
227 16 bits: sx1509q
228
Rabin Vincent03f822f2010-07-02 16:52:09 +0530229config GPIO_STMPE
230 bool "STMPE GPIOs"
231 depends on MFD_STMPE
232 help
233 This enables support for the GPIOs found on the STMPE I/O
234 Expanders.
235
Sundar Iyerf4e8afd2010-12-13 09:33:13 +0530236config GPIO_TC3589X
237 bool "TC3589X GPIOs"
238 depends on MFD_TC3589X
Rabin Vincentd88b25b2010-05-10 23:43:47 +0200239 help
Sundar Iyerf4e8afd2010-12-13 09:33:13 +0530240 This enables support for the GPIOs found on the TC3589X
Rabin Vincentd88b25b2010-05-10 23:43:47 +0200241 I/O Expander.
242
David Brownelle9d359472008-10-20 23:51:46 +0200243config GPIO_TWL4030
244 tristate "TWL4030, TWL5030, and TPS659x0 GPIOs"
245 depends on TWL4030_CORE
246 help
247 Say yes here to access the GPIO signals of various multi-function
248 power management chips from Texas Instruments.
249
Mark Browne4b736f2009-07-27 14:46:00 +0100250config GPIO_WM831X
251 tristate "WM831x GPIOs"
252 depends on MFD_WM831X
253 help
254 Say yes here to access the GPIO signals of WM831x power management
255 chips from Wolfson Microelectronics.
256
Mark Brown38f6ce42010-01-07 16:10:08 +0000257config GPIO_WM8350
258 tristate "WM8350 GPIOs"
259 depends on MFD_WM8350
260 help
261 Say yes here to access the GPIO signals of WM8350 power management
262 chips from Wolfson Microelectronics.
263
Mark Brown2955c302010-01-29 18:20:30 +0000264config GPIO_WM8994
265 tristate "WM8994 GPIOs"
266 depends on MFD_WM8994
267 help
268 Say yes here to access the GPIO signals of WM8994 audio hub
269 CODECs from Wolfson Microelectronics.
270
Michael Hennerichef72af42009-09-22 16:46:39 -0700271config GPIO_ADP5520
272 tristate "GPIO Support for ADP5520 PMIC"
273 depends on PMIC_ADP5520
274 help
275 This option enables support for on-chip GPIO found
276 on Analog Devices ADP5520 PMICs.
277
278 To compile this driver as a module, choose M here: the module will
279 be called adp5520-gpio.
280
Michael Hennerich80884092010-01-08 14:43:08 -0800281config GPIO_ADP5588
282 tristate "ADP5588 I2C GPIO expander"
283 depends on I2C
284 help
285 This option enables support for 18 GPIOs found
286 on Analog Devices ADP5588 GPIO Expanders.
287 To compile this driver as a module, choose M here: the module will be
288 called adp5588-gpio.
289
Michael Hennerich459773a2010-10-27 15:33:19 -0700290config GPIO_ADP5588_IRQ
291 bool "Interrupt controller support for ADP5588"
292 depends on GPIO_ADP5588=y
293 help
294 Say yes here to enable the adp5588 to be used as an interrupt
295 controller. It requires the driver to be built in the kernel.
296
Michael Bueschff1d5c22008-07-25 01:46:10 -0700297comment "PCI GPIO expanders:"
298
Andres Salomon5f0a96b2009-12-14 18:00:32 -0800299config GPIO_CS5535
300 tristate "AMD CS5535/CS5536 GPIO support"
Andres Salomon1b912c12011-01-12 17:00:10 -0800301 depends on PCI && X86 && !CS5535_GPIO
Andres Salomon5f0a96b2009-12-14 18:00:32 -0800302 help
303 The AMD CS5535 and CS5536 southbridges support 28 GPIO pins that
304 can be used for quite a number of things. The CS5535/6 is found on
305 AMD Geode and Lemote Yeeloong devices.
306
307 If unsure, say N.
308
Michael Bueschff1d5c22008-07-25 01:46:10 -0700309config GPIO_BT8XX
310 tristate "BT8XX GPIO abuser"
311 depends on PCI && VIDEO_BT848=n
312 help
313 The BT8xx frame grabber chip has 24 GPIO pins than can be abused
314 as a cheap PCI GPIO card.
315
316 This chip can be found on Miro, Hauppauge and STB TV-cards.
317
318 The card needs to be physically altered for using it as a
319 GPIO card. For more information on how to build a GPIO card
320 from a BT8xx TV card, see the documentation file at
321 Documentation/bt8xxgpio.txt
322
323 If unsure, say N.
324
Alek Du8bf02612009-09-22 16:46:36 -0700325config GPIO_LANGWELL
Alek Du8081c842010-05-26 14:42:25 -0700326 bool "Intel Langwell/Penwell GPIO support"
Thomas Gleixner61ab3fe2011-03-17 19:32:46 +0000327 depends on PCI && X86
Alek Du8bf02612009-09-22 16:46:36 -0700328 help
Alek Du8081c842010-05-26 14:42:25 -0700329 Say Y here to support Intel Langwell/Penwell GPIO.
Alek Du8bf02612009-09-22 16:46:36 -0700330
Tomoya MORINAGA04c17aa82010-10-27 15:33:21 -0700331config GPIO_PCH
332 tristate "PCH GPIO of Intel Topcliff"
Thomas Gleixner61ab3fe2011-03-17 19:32:46 +0000333 depends on PCI && X86
Tomoya MORINAGA04c17aa82010-10-27 15:33:21 -0700334 help
335 This driver is for PCH(Platform controller Hub) GPIO of Intel Topcliff
336 which is an IOH(Input/Output Hub) for x86 embedded processor.
337 This driver can access PCH GPIO device.
338
Tomoya MORINAGA49a36792011-01-12 17:00:22 -0800339config GPIO_ML_IOH
340 tristate "OKI SEMICONDUCTOR ML7213 IOH GPIO support"
341 depends on PCI
342 help
343 ML7213 is companion chip for Intel Atom E6xx series.
344 This driver can be used for OKI SEMICONDUCTOR ML7213 IOH(Input/Output
345 Hub) which is for IVI(In-Vehicle Infotainment) use.
346 This driver can access the IOH's GPIO device.
347
Richard Röjfors35570ac2009-12-15 16:46:18 -0800348config GPIO_TIMBERDALE
349 bool "Support for timberdale GPIO IP"
350 depends on MFD_TIMBERDALE && GPIOLIB && HAS_IOMEM
351 ---help---
352 Add support for the GPIO IP in the timberdale FPGA.
353
Florian Fainelli9956d022010-03-21 01:06:09 +0100354config GPIO_RDC321X
355 tristate "RDC R-321x GPIO support"
356 depends on PCI && GPIOLIB
Randy Dunlap6f7ab522011-01-12 17:00:21 -0800357 select MFD_SUPPORT
Randy Dunlape4be3cb2010-05-11 13:24:20 -0700358 select MFD_CORE
Florian Fainelli9956d022010-03-21 01:06:09 +0100359 select MFD_RDC321X
360 help
361 Support for the RDC R321x SoC GPIOs over southbridge
362 PCI configuration space.
363
David Brownella9c5fff2008-02-04 22:28:17 -0800364comment "SPI GPIO expanders:"
365
Juergen Beisert0c36ec32008-07-21 14:21:34 -0700366config GPIO_MAX7301
367 tristate "Maxim MAX7301 GPIO expander"
368 depends on SPI_MASTER
Wolfram Sange9528052010-03-05 13:44:33 -0800369 select GPIO_MAX730X
Juergen Beisert0c36ec32008-07-21 14:21:34 -0700370 help
Wolfram Sange9528052010-03-05 13:44:33 -0800371 GPIO driver for Maxim MAX7301 SPI-based GPIO expander.
Juergen Beisert0c36ec32008-07-21 14:21:34 -0700372
David Brownelle58b9e22008-02-04 22:28:25 -0800373config GPIO_MCP23S08
Peter Korsgaard0b7bb772011-03-09 17:56:30 +0100374 tristate "Microchip MCP23Sxx I/O expander"
David Brownelle58b9e22008-02-04 22:28:25 -0800375 depends on SPI_MASTER
376 help
Peter Korsgaard0b7bb772011-03-09 17:56:30 +0100377 SPI driver for Microchip MCP23S08/MPC23S17 I/O expanders.
378 This provides a GPIO interface supporting inputs and outputs.
David Brownelle58b9e22008-02-04 22:28:25 -0800379
Richard Röjfors1e5db002009-09-22 16:46:34 -0700380config GPIO_MC33880
381 tristate "Freescale MC33880 high-side/low-side switch"
382 depends on SPI_MASTER
383 help
384 SPI driver for Freescale MC33880 high-side/low-side switch.
385 This provides GPIO interface supporting inputs and outputs.
386
Miguel Gaioead6db082010-10-27 15:33:18 -0700387config GPIO_74X164
388 tristate "74x164 serial-in/parallel-out 8-bits shift register"
389 depends on SPI_MASTER
390 help
391 Platform driver for 74x164 compatible serial-in/parallel-out
392 8-outputs shift registers. This driver can be used to provide access
393 to more gpio outputs.
394
Marek Vasut4cf8e532009-09-22 16:46:35 -0700395comment "AC97 GPIO expanders:"
396
397config GPIO_UCB1400
398 bool "Philips UCB1400 GPIO"
399 depends on UCB1400_CORE
400 help
401 This enables support for the Philips UCB1400 GPIO pins.
402 The UCB1400 is an AC97 audio codec.
403
404 To compile this driver as a module, choose M here: the
405 module will be called ucb1400_gpio.
406
Ira W. Snyder800e69f2010-04-07 10:08:01 +0200407comment "MODULbus GPIO expanders:"
408
409config GPIO_JANZ_TTL
410 tristate "Janz VMOD-TTL Digital IO Module"
411 depends on MFD_JANZ_CMODIO
412 help
413 This enables support for the Janz VMOD-TTL Digital IO module.
414 This driver provides support for driving the pins in output
415 mode only. Input mode is not supported.
416
Michael Buesch7444a722008-07-25 01:46:11 -0700417endif