Loading...
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
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 help
91 Say yes here to support GPIO functionality of IT8761E super I/O chip.
92
93config GPIO_EP93XX
94 def_bool y
95 depends on ARCH_EP93XX
96 select GPIO_GENERIC
97
98config GPIO_EXYNOS4
99 def_bool y
100 depends on CPU_EXYNOS4210
101
102config GPIO_MPC5200
103 def_bool y
104 depends on PPC_MPC52xx
105
106config GPIO_MSM_V1
107 tristate "Qualcomm MSM GPIO v1"
108 depends on GPIOLIB && ARCH_MSM
109 help
110 Say yes here to support the GPIO interface on ARM v6 based
111 Qualcomm MSM chips. Most of the pins on the MSM can be
112 selected for GPIO, and are controlled by this driver.
113
114config GPIO_MSM_V2
115 tristate "Qualcomm MSM GPIO v2"
116 depends on GPIOLIB && ARCH_MSM
117 help
118 Say yes here to support the GPIO interface on ARM v7 based
119 Qualcomm MSM chips. Most of the pins on the MSM can be
120 selected for GPIO, and are controlled by this driver.
121
122config GPIO_MXC
123 def_bool y
124 depends on ARCH_MXC
125 select GPIO_GENERIC
126 select GENERIC_IRQ_CHIP
127
128config GPIO_MXS
129 def_bool y
130 depends on ARCH_MXS
131 select GPIO_GENERIC
132 select GENERIC_IRQ_CHIP
133
134config GPIO_PLAT_SAMSUNG
135 def_bool y
136 depends on SAMSUNG_GPIOLIB_4BIT
137
138config GPIO_S5PC100
139 def_bool y
140 depends on CPU_S5PC100
141
142config GPIO_S5PV210
143 def_bool y
144 depends on CPU_S5PV210
145
146config GPIO_PL061
147 bool "PrimeCell PL061 GPIO support"
148 depends on ARM_AMBA
149 help
150 Say yes here to support the PrimeCell PL061 GPIO device
151
152config GPIO_XILINX
153 bool "Xilinx GPIO support"
154 depends on PPC_OF || MICROBLAZE
155 help
156 Say yes here to support the Xilinx FPGA GPIO device
157
158config GPIO_VR41XX
159 tristate "NEC VR4100 series General-purpose I/O Uint support"
160 depends on CPU_VR41XX
161 help
162 Say yes here to support the NEC VR4100 series General-purpose I/O Uint
163
164config GPIO_SCH
165 tristate "Intel SCH/TunnelCreek GPIO"
166 depends on PCI && X86
167 select MFD_CORE
168 select LPC_SCH
169 help
170 Say yes here to support GPIO interface on Intel Poulsbo SCH
171 or Intel Tunnel Creek processor.
172 The Intel SCH contains a total of 14 GPIO pins. Ten GPIOs are
173 powered by the core power rail and are turned off during sleep
174 modes (S3 and higher). The remaining four GPIOs are powered by
175 the Intel SCH suspend power supply. These GPIOs remain
176 active during S3. The suspend powered GPIOs can be used to wake the
177 system from the Suspend-to-RAM state.
178 The Intel Tunnel Creek processor has 5 GPIOs powered by the
179 core power rail and 9 from suspend power supply.
180
181config GPIO_VX855
182 tristate "VIA VX855/VX875 GPIO"
183 depends on MFD_SUPPORT && PCI
184 select MFD_CORE
185 select MFD_VX855
186 help
187 Support access to the VX855/VX875 GPIO lines through the gpio library.
188
189 This driver provides common support for accessing the device,
190 additional drivers must be enabled in order to use the
191 functionality of the device.
192
193comment "I2C GPIO expanders:"
194
195config GPIO_MAX7300
196 tristate "Maxim MAX7300 GPIO expander"
197 depends on I2C
198 select GPIO_MAX730X
199 help
200 GPIO driver for Maxim MAX7301 I2C-based GPIO expander.
201
202config GPIO_MAX732X
203 tristate "MAX7319, MAX7320-7327 I2C Port Expanders"
204 depends on I2C
205 help
206 Say yes here to support the MAX7319, MAX7320-7327 series of I2C
207 Port Expanders. Each IO port on these chips has a fixed role of
208 Input (designated by 'I'), Push-Pull Output ('O'), or Open-Drain
209 Input and Output (designed by 'P'). The combinations are listed
210 below:
211
212 8 bits: max7319 (8I), max7320 (8O), max7321 (8P),
213 max7322 (4I4O), max7323 (4P4O)
214
215 16 bits: max7324 (8I8O), max7325 (8P8O),
216 max7326 (4I12O), max7327 (4P12O)
217
218 Board setup code must specify the model to use, and the start
219 number for these GPIOs.
220
221config GPIO_MAX732X_IRQ
222 bool "Interrupt controller support for MAX732x"
223 depends on GPIO_MAX732X=y && GENERIC_HARDIRQS
224 help
225 Say yes here to enable the max732x to be used as an interrupt
226 controller. It requires the driver to be built in the kernel.
227
228config GPIO_PCA953X
229 tristate "PCA953x, PCA955x, TCA64xx, and MAX7310 I/O ports"
230 depends on I2C
231 help
232 Say yes here to provide access to several register-oriented
233 SMBus I/O expanders, made mostly by NXP or TI. Compatible
234 models include:
235
236 4 bits: pca9536, pca9537
237
238 8 bits: max7310, pca9534, pca9538, pca9554, pca9557,
239 tca6408
240
241 16 bits: pca9535, pca9539, pca9555, tca6416
242
243config GPIO_PCA953X_IRQ
244 bool "Interrupt controller support for PCA953x"
245 depends on GPIO_PCA953X=y
246 help
247 Say yes here to enable the pca953x to be used as an interrupt
248 controller. It requires the driver to be built in the kernel.
249
250config GPIO_PCF857X
251 tristate "PCF857x, PCA{85,96}7x, and MAX732[89] I2C GPIO expanders"
252 depends on I2C
253 help
254 Say yes here to provide access to most "quasi-bidirectional" I2C
255 GPIO expanders used for additional digital outputs or inputs.
256 Most of these parts are from NXP, though TI is a second source for
257 some of them. Compatible models include:
258
259 8 bits: pcf8574, pcf8574a, pca8574, pca8574a,
260 pca9670, pca9672, pca9674, pca9674a,
261 max7328, max7329
262
263 16 bits: pcf8575, pcf8575c, pca8575,
264 pca9671, pca9673, pca9675
265
266 Your board setup code will need to declare the expanders in
267 use, and assign numbers to the GPIOs they expose. Those GPIOs
268 can then be used from drivers and other kernel code, just like
269 other GPIOs, but only accessible from task contexts.
270
271 This driver provides an in-kernel interface to those GPIOs using
272 platform-neutral GPIO calls.
273
274config GPIO_SX150X
275 bool "Semtech SX150x I2C GPIO expander"
276 depends on I2C=y
277 default n
278 help
279 Say yes here to provide support for Semtech SX150-series I2C
280 GPIO expanders. Compatible models include:
281
282 8 bits: sx1508q
283 16 bits: sx1509q
284
285config GPIO_STMPE
286 bool "STMPE GPIOs"
287 depends on MFD_STMPE
288 help
289 This enables support for the GPIOs found on the STMPE I/O
290 Expanders.
291
292config GPIO_TC3589X
293 bool "TC3589X GPIOs"
294 depends on MFD_TC3589X
295 help
296 This enables support for the GPIOs found on the TC3589X
297 I/O Expander.
298
299config GPIO_TPS65912
300 tristate "TI TPS65912 GPIO"
301 depends on (MFD_TPS65912_I2C || MFD_TPS65912_SPI)
302 help
303 This driver supports TPS65912 gpio chip
304
305config GPIO_TWL4030
306 tristate "TWL4030, TWL5030, and TPS659x0 GPIOs"
307 depends on TWL4030_CORE
308 help
309 Say yes here to access the GPIO signals of various multi-function
310 power management chips from Texas Instruments.
311
312config GPIO_WM831X
313 tristate "WM831x GPIOs"
314 depends on MFD_WM831X
315 help
316 Say yes here to access the GPIO signals of WM831x power management
317 chips from Wolfson Microelectronics.
318
319config GPIO_WM8350
320 tristate "WM8350 GPIOs"
321 depends on MFD_WM8350
322 help
323 Say yes here to access the GPIO signals of WM8350 power management
324 chips from Wolfson Microelectronics.
325
326config GPIO_WM8994
327 tristate "WM8994 GPIOs"
328 depends on MFD_WM8994
329 help
330 Say yes here to access the GPIO signals of WM8994 audio hub
331 CODECs from Wolfson Microelectronics.
332
333config GPIO_ADP5520
334 tristate "GPIO Support for ADP5520 PMIC"
335 depends on PMIC_ADP5520
336 help
337 This option enables support for on-chip GPIO found
338 on Analog Devices ADP5520 PMICs.
339
340config GPIO_ADP5588
341 tristate "ADP5588 I2C GPIO expander"
342 depends on I2C
343 help
344 This option enables support for 18 GPIOs found
345 on Analog Devices ADP5588 GPIO Expanders.
346
347config GPIO_ADP5588_IRQ
348 bool "Interrupt controller support for ADP5588"
349 depends on GPIO_ADP5588=y
350 help
351 Say yes here to enable the adp5588 to be used as an interrupt
352 controller. It requires the driver to be built in the kernel.
353
354comment "PCI GPIO expanders:"
355
356config GPIO_CS5535
357 tristate "AMD CS5535/CS5536 GPIO support"
358 depends on PCI && X86 && !CS5535_GPIO && MFD_CS5535
359 help
360 The AMD CS5535 and CS5536 southbridges support 28 GPIO pins that
361 can be used for quite a number of things. The CS5535/6 is found on
362 AMD Geode and Lemote Yeeloong devices.
363
364 If unsure, say N.
365
366config GPIO_BT8XX
367 tristate "BT8XX GPIO abuser"
368 depends on PCI && VIDEO_BT848=n
369 help
370 The BT8xx frame grabber chip has 24 GPIO pins than can be abused
371 as a cheap PCI GPIO card.
372
373 This chip can be found on Miro, Hauppauge and STB TV-cards.
374
375 The card needs to be physically altered for using it as a
376 GPIO card. For more information on how to build a GPIO card
377 from a BT8xx TV card, see the documentation file at
378 Documentation/bt8xxgpio.txt
379
380 If unsure, say N.
381
382config GPIO_LANGWELL
383 bool "Intel Langwell/Penwell GPIO support"
384 depends on PCI && X86
385 help
386 Say Y here to support Intel Langwell/Penwell GPIO.
387
388config GPIO_PCH
389 tristate "Intel EG20T PCH / OKI SEMICONDUCTOR ML7223 IOH GPIO"
390 depends on PCI && X86
391 help
392 This driver is for PCH(Platform controller Hub) GPIO of Intel Topcliff
393 which is an IOH(Input/Output Hub) for x86 embedded processor.
394 This driver can access PCH GPIO device.
395
396 This driver also can be used for OKI SEMICONDUCTOR IOH(Input/
397 Output Hub), ML7223.
398 ML7223 IOH is for MP(Media Phone) use.
399 ML7223 is companion chip for Intel Atom E6xx series.
400 ML7223 is completely compatible for Intel EG20T PCH.
401
402config GPIO_ML_IOH
403 tristate "OKI SEMICONDUCTOR ML7213 IOH GPIO support"
404 depends on PCI
405 help
406 ML7213 is companion chip for Intel Atom E6xx series.
407 This driver can be used for OKI SEMICONDUCTOR ML7213 IOH(Input/Output
408 Hub) which is for IVI(In-Vehicle Infotainment) use.
409 This driver can access the IOH's GPIO device.
410
411config GPIO_TIMBERDALE
412 bool "Support for timberdale GPIO IP"
413 depends on MFD_TIMBERDALE && HAS_IOMEM
414 ---help---
415 Add support for the GPIO IP in the timberdale FPGA.
416
417config GPIO_RDC321X
418 tristate "RDC R-321x GPIO support"
419 depends on PCI
420 select MFD_SUPPORT
421 select MFD_CORE
422 select MFD_RDC321X
423 help
424 Support for the RDC R321x SoC GPIOs over southbridge
425 PCI configuration space.
426
427comment "SPI GPIO expanders:"
428
429config GPIO_MAX7301
430 tristate "Maxim MAX7301 GPIO expander"
431 depends on SPI_MASTER
432 select GPIO_MAX730X
433 help
434 GPIO driver for Maxim MAX7301 SPI-based GPIO expander.
435
436config GPIO_MCP23S08
437 tristate "Microchip MCP23xxx I/O expander"
438 depends on SPI_MASTER || I2C
439 help
440 SPI/I2C driver for Microchip MCP23S08/MCP23S17/MCP23008/MCP23017
441 I/O expanders.
442 This provides a GPIO interface supporting inputs and outputs.
443
444config GPIO_MC33880
445 tristate "Freescale MC33880 high-side/low-side switch"
446 depends on SPI_MASTER
447 help
448 SPI driver for Freescale MC33880 high-side/low-side switch.
449 This provides GPIO interface supporting inputs and outputs.
450
451config GPIO_74X164
452 tristate "74x164 serial-in/parallel-out 8-bits shift register"
453 depends on SPI_MASTER
454 help
455 Platform driver for 74x164 compatible serial-in/parallel-out
456 8-outputs shift registers. This driver can be used to provide access
457 to more gpio outputs.
458
459comment "AC97 GPIO expanders:"
460
461config GPIO_UCB1400
462 bool "Philips UCB1400 GPIO"
463 depends on UCB1400_CORE
464 help
465 This enables support for the Philips UCB1400 GPIO pins.
466 The UCB1400 is an AC97 audio codec.
467
468comment "MODULbus GPIO expanders:"
469
470config GPIO_JANZ_TTL
471 tristate "Janz VMOD-TTL Digital IO Module"
472 depends on MFD_JANZ_CMODIO
473 help
474 This enables support for the Janz VMOD-TTL Digital IO module.
475 This driver provides support for driving the pins in output
476 mode only. Input mode is not supported.
477
478config GPIO_AB8500
479 bool "ST-Ericsson AB8500 Mixed Signal Circuit gpio functions"
480 depends on AB8500_CORE && BROKEN
481 help
482 Select this to enable the AB8500 IC GPIO driver
483
484config GPIO_TPS65910
485 bool "TPS65910 GPIO"
486 depends on MFD_TPS65910
487 help
488 Select this option to enable GPIO driver for the TPS65910
489 chip family.
490endif
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_MAX7300
257 tristate "Maxim MAX7300 GPIO expander"
258 depends on I2C
259 select GPIO_MAX730X
260 help
261 GPIO driver for Maxim MAX7301 I2C-based GPIO expander.
262
263config GPIO_MAX732X
264 tristate "MAX7319, MAX7320-7327 I2C Port Expanders"
265 depends on I2C
266 help
267 Say yes here to support the MAX7319, MAX7320-7327 series of I2C
268 Port Expanders. Each IO port on these chips has a fixed role of
269 Input (designated by 'I'), Push-Pull Output ('O'), or Open-Drain
270 Input and Output (designed by 'P'). The combinations are listed
271 below:
272
273 8 bits: max7319 (8I), max7320 (8O), max7321 (8P),
274 max7322 (4I4O), max7323 (4P4O)
275
276 16 bits: max7324 (8I8O), max7325 (8P8O),
277 max7326 (4I12O), max7327 (4P12O)
278
279 Board setup code must specify the model to use, and the start
280 number for these GPIOs.
281
282config GPIO_MAX732X_IRQ
283 bool "Interrupt controller support for MAX732x"
284 depends on GPIO_MAX732X=y && GENERIC_HARDIRQS
285 help
286 Say yes here to enable the max732x to be used as an interrupt
287 controller. It requires the driver to be built in the kernel.
288
289config GPIO_MC9S08DZ60
290 bool "MX35 3DS BOARD MC9S08DZ60 GPIO functions"
291 depends on I2C && MACH_MX35_3DS
292 help
293 Select this to enable the MC9S08DZ60 GPIO driver
294
295config GPIO_PCA953X
296 tristate "PCA953x, PCA955x, PCA957x, TCA64xx, and MAX7310 I/O ports"
297 depends on I2C
298 help
299 Say yes here to provide access to several register-oriented
300 SMBus I/O expanders, made mostly by NXP or TI. Compatible
301 models include:
302
303 4 bits: pca9536, pca9537
304
305 8 bits: max7310, max7315, pca6107, pca9534, pca9538, pca9554,
306 pca9556, pca9557, pca9574, tca6408
307
308 16 bits: max7312, max7313, pca9535, pca9539, pca9555, pca9575,
309 tca6416
310
311config GPIO_PCA953X_IRQ
312 bool "Interrupt controller support for PCA953x"
313 depends on GPIO_PCA953X=y
314 help
315 Say yes here to enable the pca953x to be used as an interrupt
316 controller. It requires the driver to be built in the kernel.
317
318config GPIO_PCF857X
319 tristate "PCF857x, PCA{85,96}7x, and MAX732[89] I2C GPIO expanders"
320 depends on I2C
321 help
322 Say yes here to provide access to most "quasi-bidirectional" I2C
323 GPIO expanders used for additional digital outputs or inputs.
324 Most of these parts are from NXP, though TI is a second source for
325 some of them. Compatible models include:
326
327 8 bits: pcf8574, pcf8574a, pca8574, pca8574a,
328 pca9670, pca9672, pca9674, pca9674a,
329 max7328, max7329
330
331 16 bits: pcf8575, pcf8575c, pca8575,
332 pca9671, pca9673, pca9675
333
334 Your board setup code will need to declare the expanders in
335 use, and assign numbers to the GPIOs they expose. Those GPIOs
336 can then be used from drivers and other kernel code, just like
337 other GPIOs, but only accessible from task contexts.
338
339 This driver provides an in-kernel interface to those GPIOs using
340 platform-neutral GPIO calls.
341
342config GPIO_RC5T583
343 bool "RICOH RC5T583 GPIO"
344 depends on MFD_RC5T583
345 help
346 Select this option to enable GPIO driver for the Ricoh RC5T583
347 chip family.
348 This driver provides the support for driving/reading the gpio pins
349 of RC5T583 device through standard gpio library.
350
351config GPIO_SX150X
352 bool "Semtech SX150x I2C GPIO expander"
353 depends on I2C=y
354 default n
355 help
356 Say yes here to provide support for Semtech SX150-series I2C
357 GPIO expanders. Compatible models include:
358
359 8 bits: sx1508q
360 16 bits: sx1509q
361
362config GPIO_STMPE
363 bool "STMPE GPIOs"
364 depends on MFD_STMPE
365 help
366 This enables support for the GPIOs found on the STMPE I/O
367 Expanders.
368
369config GPIO_STP_XWAY
370 bool "XWAY STP GPIOs"
371 depends on SOC_XWAY
372 help
373 This enables support for the Serial To Parallel (STP) unit found on
374 XWAY SoC. The STP allows the SoC to drive a shift registers cascade,
375 that can be up to 24 bit. This peripheral is aimed at driving leds.
376 Some of the gpios/leds can be auto updated by the soc with dsl and
377 phy status.
378
379config GPIO_TC3589X
380 bool "TC3589X GPIOs"
381 depends on MFD_TC3589X
382 help
383 This enables support for the GPIOs found on the TC3589X
384 I/O Expander.
385
386config GPIO_TPS65912
387 tristate "TI TPS65912 GPIO"
388 depends on (MFD_TPS65912_I2C || MFD_TPS65912_SPI)
389 help
390 This driver supports TPS65912 gpio chip
391
392config GPIO_TWL4030
393 tristate "TWL4030, TWL5030, and TPS659x0 GPIOs"
394 depends on TWL4030_CORE
395 help
396 Say yes here to access the GPIO signals of various multi-function
397 power management chips from Texas Instruments.
398
399config GPIO_WM831X
400 tristate "WM831x GPIOs"
401 depends on MFD_WM831X
402 help
403 Say yes here to access the GPIO signals of WM831x power management
404 chips from Wolfson Microelectronics.
405
406config GPIO_WM8350
407 tristate "WM8350 GPIOs"
408 depends on MFD_WM8350
409 help
410 Say yes here to access the GPIO signals of WM8350 power management
411 chips from Wolfson Microelectronics.
412
413config GPIO_WM8994
414 tristate "WM8994 GPIOs"
415 depends on MFD_WM8994
416 help
417 Say yes here to access the GPIO signals of WM8994 audio hub
418 CODECs from Wolfson Microelectronics.
419
420config GPIO_ADP5520
421 tristate "GPIO Support for ADP5520 PMIC"
422 depends on PMIC_ADP5520
423 help
424 This option enables support for on-chip GPIO found
425 on Analog Devices ADP5520 PMICs.
426
427config GPIO_ADP5588
428 tristate "ADP5588 I2C GPIO expander"
429 depends on I2C
430 help
431 This option enables support for 18 GPIOs found
432 on Analog Devices ADP5588 GPIO Expanders.
433
434config GPIO_ADP5588_IRQ
435 bool "Interrupt controller support for ADP5588"
436 depends on GPIO_ADP5588=y
437 help
438 Say yes here to enable the adp5588 to be used as an interrupt
439 controller. It requires the driver to be built in the kernel.
440
441comment "PCI GPIO expanders:"
442
443config GPIO_CS5535
444 tristate "AMD CS5535/CS5536 GPIO support"
445 depends on PCI && X86 && MFD_CS5535
446 help
447 The AMD CS5535 and CS5536 southbridges support 28 GPIO pins that
448 can be used for quite a number of things. The CS5535/6 is found on
449 AMD Geode and Lemote Yeeloong devices.
450
451 If unsure, say N.
452
453config GPIO_BT8XX
454 tristate "BT8XX GPIO abuser"
455 depends on PCI && VIDEO_BT848=n
456 help
457 The BT8xx frame grabber chip has 24 GPIO pins than can be abused
458 as a cheap PCI GPIO card.
459
460 This chip can be found on Miro, Hauppauge and STB TV-cards.
461
462 The card needs to be physically altered for using it as a
463 GPIO card. For more information on how to build a GPIO card
464 from a BT8xx TV card, see the documentation file at
465 Documentation/bt8xxgpio.txt
466
467 If unsure, say N.
468
469config GPIO_LANGWELL
470 bool "Intel Langwell/Penwell GPIO support"
471 depends on PCI && X86
472 select IRQ_DOMAIN
473 help
474 Say Y here to support Intel Langwell/Penwell GPIO.
475
476config GPIO_PCH
477 tristate "Intel EG20T PCH/LAPIS Semiconductor IOH(ML7223/ML7831) GPIO"
478 depends on PCI && X86
479 select GENERIC_IRQ_CHIP
480 help
481 This driver is for PCH(Platform controller Hub) GPIO of Intel Topcliff
482 which is an IOH(Input/Output Hub) for x86 embedded processor.
483 This driver can access PCH GPIO device.
484
485 This driver also can be used for LAPIS Semiconductor IOH(Input/
486 Output Hub), ML7223 and ML7831.
487 ML7223 IOH is for MP(Media Phone) use.
488 ML7831 IOH is for general purpose use.
489 ML7223/ML7831 is companion chip for Intel Atom E6xx series.
490 ML7223/ML7831 is completely compatible for Intel EG20T PCH.
491
492config GPIO_ML_IOH
493 tristate "OKI SEMICONDUCTOR ML7213 IOH GPIO support"
494 depends on PCI
495 select GENERIC_IRQ_CHIP
496 help
497 ML7213 is companion chip for Intel Atom E6xx series.
498 This driver can be used for OKI SEMICONDUCTOR ML7213 IOH(Input/Output
499 Hub) which is for IVI(In-Vehicle Infotainment) use.
500 This driver can access the IOH's GPIO device.
501
502config GPIO_SODAVILLE
503 bool "Intel Sodaville GPIO support"
504 depends on X86 && PCI && OF
505 select GPIO_GENERIC
506 select GENERIC_IRQ_CHIP
507 help
508 Say Y here to support Intel Sodaville GPIO.
509
510config GPIO_TIMBERDALE
511 bool "Support for timberdale GPIO IP"
512 depends on MFD_TIMBERDALE && HAS_IOMEM
513 ---help---
514 Add support for the GPIO IP in the timberdale FPGA.
515
516config GPIO_RDC321X
517 tristate "RDC R-321x GPIO support"
518 depends on PCI
519 select MFD_CORE
520 select MFD_RDC321X
521 help
522 Support for the RDC R321x SoC GPIOs over southbridge
523 PCI configuration space.
524
525comment "SPI GPIO expanders:"
526
527config GPIO_MAX7301
528 tristate "Maxim MAX7301 GPIO expander"
529 depends on SPI_MASTER
530 select GPIO_MAX730X
531 help
532 GPIO driver for Maxim MAX7301 SPI-based GPIO expander.
533
534config GPIO_MCP23S08
535 tristate "Microchip MCP23xxx I/O expander"
536 depends on SPI_MASTER || I2C
537 help
538 SPI/I2C driver for Microchip MCP23S08/MCP23S17/MCP23008/MCP23017
539 I/O expanders.
540 This provides a GPIO interface supporting inputs and outputs.
541
542config GPIO_MC33880
543 tristate "Freescale MC33880 high-side/low-side switch"
544 depends on SPI_MASTER
545 help
546 SPI driver for Freescale MC33880 high-side/low-side switch.
547 This provides GPIO interface supporting inputs and outputs.
548
549config GPIO_74X164
550 tristate "74x164 serial-in/parallel-out 8-bits shift register"
551 depends on SPI_MASTER
552 help
553 Platform driver for 74x164 compatible serial-in/parallel-out
554 8-outputs shift registers. This driver can be used to provide access
555 to more gpio outputs.
556
557comment "AC97 GPIO expanders:"
558
559config GPIO_UCB1400
560 bool "Philips UCB1400 GPIO"
561 depends on UCB1400_CORE
562 help
563 This enables support for the Philips UCB1400 GPIO pins.
564 The UCB1400 is an AC97 audio codec.
565
566comment "MODULbus GPIO expanders:"
567
568config GPIO_JANZ_TTL
569 tristate "Janz VMOD-TTL Digital IO Module"
570 depends on MFD_JANZ_CMODIO
571 help
572 This enables support for the Janz VMOD-TTL Digital IO module.
573 This driver provides support for driving the pins in output
574 mode only. Input mode is not supported.
575
576config GPIO_AB8500
577 bool "ST-Ericsson AB8500 Mixed Signal Circuit gpio functions"
578 depends on AB8500_CORE && BROKEN
579 help
580 Select this to enable the AB8500 IC GPIO driver
581
582config GPIO_TPS65910
583 bool "TPS65910 GPIO"
584 depends on MFD_TPS65910
585 help
586 Select this option to enable GPIO driver for the TPS65910
587 chip family.
588
589config GPIO_MSIC
590 bool "Intel MSIC mixed signal gpio support"
591 depends on MFD_INTEL_MSIC
592 help
593 Enable support for GPIO on intel MSIC controllers found in
594 intel MID devices
595
596endif