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_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 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
193config GPIO_GE_FPGA
194	bool "GE FPGA based GPIO"
195	depends on GE_FPGA
196	help
197	  Support for common GPIO functionality provided on some GE Single Board
198	  Computers.
199
200	  This driver provides basic support (configure as input or output, read
201	  and write pin state) for GPIO implemented in a number of GE single
202	  board computers.
203
204comment "I2C GPIO expanders:"
205
206config GPIO_MAX7300
207	tristate "Maxim MAX7300 GPIO expander"
208	depends on I2C
209	select GPIO_MAX730X
210	help
211	  GPIO driver for Maxim MAX7301 I2C-based GPIO expander.
212
213config GPIO_MAX732X
214	tristate "MAX7319, MAX7320-7327 I2C Port Expanders"
215	depends on I2C
216	help
217	  Say yes here to support the MAX7319, MAX7320-7327 series of I2C
218	  Port Expanders. Each IO port on these chips has a fixed role of
219	  Input (designated by 'I'), Push-Pull Output ('O'), or Open-Drain
220	  Input and Output (designed by 'P'). The combinations are listed
221	  below:
222
223	  8 bits:	max7319 (8I), max7320 (8O), max7321 (8P),
224		  	max7322 (4I4O), max7323 (4P4O)
225
226	  16 bits:	max7324 (8I8O), max7325 (8P8O),
227		  	max7326 (4I12O), max7327 (4P12O)
228
229	  Board setup code must specify the model to use, and the start
230	  number for these GPIOs.
231
232config GPIO_MAX732X_IRQ
233	bool "Interrupt controller support for MAX732x"
234	depends on GPIO_MAX732X=y && GENERIC_HARDIRQS
235	help
236	  Say yes here to enable the max732x to be used as an interrupt
237	  controller. It requires the driver to be built in the kernel.
238
239config GPIO_MC9S08DZ60
240	bool "MX35 3DS BOARD MC9S08DZ60 GPIO functions"
241	depends on I2C && MACH_MX35_3DS
242	help
243	  Select this to enable the MC9S08DZ60 GPIO driver
244
245config GPIO_PCA953X
246	tristate "PCA953x, PCA955x, TCA64xx, and MAX7310 I/O ports"
247	depends on I2C
248	help
249	  Say yes here to provide access to several register-oriented
250	  SMBus I/O expanders, made mostly by NXP or TI.  Compatible
251	  models include:
252
253	  4 bits:	pca9536, pca9537
254
255	  8 bits:	max7310, pca9534, pca9538, pca9554, pca9557,
256	  		tca6408
257
258	  16 bits:	pca9535, pca9539, pca9555, tca6416
259
260config GPIO_PCA953X_IRQ
261	bool "Interrupt controller support for PCA953x"
262	depends on GPIO_PCA953X=y
263	help
264	  Say yes here to enable the pca953x to be used as an interrupt
265	  controller. It requires the driver to be built in the kernel.
266
267config GPIO_PCF857X
268	tristate "PCF857x, PCA{85,96}7x, and MAX732[89] I2C GPIO expanders"
269	depends on I2C
270	help
271	  Say yes here to provide access to most "quasi-bidirectional" I2C
272	  GPIO expanders used for additional digital outputs or inputs.
273	  Most of these parts are from NXP, though TI is a second source for
274	  some of them.  Compatible models include:
275
276	  8 bits:   pcf8574, pcf8574a, pca8574, pca8574a,
277	            pca9670, pca9672, pca9674, pca9674a,
278	  	    max7328, max7329
279
280	  16 bits:  pcf8575, pcf8575c, pca8575,
281	            pca9671, pca9673, pca9675
282
283	  Your board setup code will need to declare the expanders in
284	  use, and assign numbers to the GPIOs they expose.  Those GPIOs
285	  can then be used from drivers and other kernel code, just like
286	  other GPIOs, but only accessible from task contexts.
287
288	  This driver provides an in-kernel interface to those GPIOs using
289	  platform-neutral GPIO calls.
290
291config GPIO_SX150X
292	bool "Semtech SX150x I2C GPIO expander"
293	depends on I2C=y
294	default n
295	help
296	  Say yes here to provide support for Semtech SX150-series I2C
297	  GPIO expanders. Compatible models include:
298
299	  8 bits:  sx1508q
300	  16 bits: sx1509q
301
302config GPIO_STMPE
303	bool "STMPE GPIOs"
304	depends on MFD_STMPE
305	help
306	  This enables support for the GPIOs found on the STMPE I/O
307	  Expanders.
308
309config GPIO_TC3589X
310	bool "TC3589X GPIOs"
311	depends on MFD_TC3589X
312	help
313	  This enables support for the GPIOs found on the TC3589X
314	  I/O Expander.
315
316config GPIO_TPS65912
317	tristate "TI TPS65912 GPIO"
318	depends on (MFD_TPS65912_I2C || MFD_TPS65912_SPI)
319	help
320	  This driver supports TPS65912 gpio chip
321
322config GPIO_TWL4030
323	tristate "TWL4030, TWL5030, and TPS659x0 GPIOs"
324	depends on TWL4030_CORE
325	help
326	  Say yes here to access the GPIO signals of various multi-function
327	  power management chips from Texas Instruments.
328
329config GPIO_WM831X
330	tristate "WM831x GPIOs"
331	depends on MFD_WM831X
332	help
333	  Say yes here to access the GPIO signals of WM831x power management
334	  chips from Wolfson Microelectronics.
335
336config GPIO_WM8350
337	tristate "WM8350 GPIOs"
338	depends on MFD_WM8350
339	help
340	  Say yes here to access the GPIO signals of WM8350 power management
341	  chips from Wolfson Microelectronics.
342
343config GPIO_WM8994
344	tristate "WM8994 GPIOs"
345	depends on MFD_WM8994
346	help
347	  Say yes here to access the GPIO signals of WM8994 audio hub
348	  CODECs from Wolfson Microelectronics.
349
350config GPIO_ADP5520
351	tristate "GPIO Support for ADP5520 PMIC"
352	depends on PMIC_ADP5520
353	help
354	  This option enables support for on-chip GPIO found
355	  on Analog Devices ADP5520 PMICs.
356
357config GPIO_ADP5588
358	tristate "ADP5588 I2C GPIO expander"
359	depends on I2C
360	help
361	  This option enables support for 18 GPIOs found
362	  on Analog Devices ADP5588 GPIO Expanders.
363
364config GPIO_ADP5588_IRQ
365	bool "Interrupt controller support for ADP5588"
366	depends on GPIO_ADP5588=y
367	help
368	  Say yes here to enable the adp5588 to be used as an interrupt
369	  controller. It requires the driver to be built in the kernel.
370
371comment "PCI GPIO expanders:"
372
373config GPIO_CS5535
374	tristate "AMD CS5535/CS5536 GPIO support"
375	depends on PCI && X86 && MFD_CS5535
376	help
377	  The AMD CS5535 and CS5536 southbridges support 28 GPIO pins that
378	  can be used for quite a number of things.  The CS5535/6 is found on
379	  AMD Geode and Lemote Yeeloong devices.
380
381	  If unsure, say N.
382
383config GPIO_BT8XX
384	tristate "BT8XX GPIO abuser"
385	depends on PCI && VIDEO_BT848=n
386	help
387	  The BT8xx frame grabber chip has 24 GPIO pins than can be abused
388	  as a cheap PCI GPIO card.
389
390	  This chip can be found on Miro, Hauppauge and STB TV-cards.
391
392	  The card needs to be physically altered for using it as a
393	  GPIO card. For more information on how to build a GPIO card
394	  from a BT8xx TV card, see the documentation file at
395	  Documentation/bt8xxgpio.txt
396
397	  If unsure, say N.
398
399config GPIO_LANGWELL
400	bool "Intel Langwell/Penwell GPIO support"
401	depends on PCI && X86
402	help
403	  Say Y here to support Intel Langwell/Penwell GPIO.
404
405config GPIO_PCH
406	tristate "Intel EG20T PCH/LAPIS Semiconductor IOH(ML7223/ML7831) GPIO"
407	depends on PCI && X86
408	select GENERIC_IRQ_CHIP
409	help
410	  This driver is for PCH(Platform controller Hub) GPIO of Intel Topcliff
411	  which is an IOH(Input/Output Hub) for x86 embedded processor.
412	  This driver can access PCH GPIO device.
413
414	  This driver also can be used for LAPIS Semiconductor IOH(Input/
415	  Output Hub), ML7223 and ML7831.
416	  ML7223 IOH is for MP(Media Phone) use.
417	  ML7831 IOH is for general purpose use.
418	  ML7223/ML7831 is companion chip for Intel Atom E6xx series.
419	  ML7223/ML7831 is completely compatible for Intel EG20T PCH.
420
421config GPIO_ML_IOH
422	tristate "OKI SEMICONDUCTOR ML7213 IOH GPIO support"
423	depends on PCI
424	select GENERIC_IRQ_CHIP
425	help
426	  ML7213 is companion chip for Intel Atom E6xx series.
427	  This driver can be used for OKI SEMICONDUCTOR ML7213 IOH(Input/Output
428	  Hub) which is for IVI(In-Vehicle Infotainment) use.
429	  This driver can access the IOH's GPIO device.
430
431config GPIO_SODAVILLE
432	bool "Intel Sodaville GPIO support"
433	depends on X86 && PCI && OF
434	select GPIO_GENERIC
435	select GENERIC_IRQ_CHIP
436	help
437	  Say Y here to support Intel Sodaville GPIO.
438
439config GPIO_TIMBERDALE
440	bool "Support for timberdale GPIO IP"
441	depends on MFD_TIMBERDALE && HAS_IOMEM
442	---help---
443	Add support for the GPIO IP in the timberdale FPGA.
444
445config GPIO_RDC321X
446	tristate "RDC R-321x GPIO support"
447	depends on PCI
448	select MFD_CORE
449	select MFD_RDC321X
450	help
451	  Support for the RDC R321x SoC GPIOs over southbridge
452	  PCI configuration space.
453
454comment "SPI GPIO expanders:"
455
456config GPIO_MAX7301
457	tristate "Maxim MAX7301 GPIO expander"
458	depends on SPI_MASTER
459	select GPIO_MAX730X
460	help
461	  GPIO driver for Maxim MAX7301 SPI-based GPIO expander.
462
463config GPIO_MCP23S08
464	tristate "Microchip MCP23xxx I/O expander"
465	depends on SPI_MASTER || I2C
466	help
467	  SPI/I2C driver for Microchip MCP23S08/MCP23S17/MCP23008/MCP23017
468	  I/O expanders.
469	  This provides a GPIO interface supporting inputs and outputs.
470
471config GPIO_MC33880
472	tristate "Freescale MC33880 high-side/low-side switch"
473	depends on SPI_MASTER
474	help
475	  SPI driver for Freescale MC33880 high-side/low-side switch.
476	  This provides GPIO interface supporting inputs and outputs.
477
478config GPIO_74X164
479	tristate "74x164 serial-in/parallel-out 8-bits shift register"
480	depends on SPI_MASTER
481	help
482	  Platform driver for 74x164 compatible serial-in/parallel-out
483	  8-outputs shift registers. This driver can be used to provide access
484	  to more gpio outputs.
485
486comment "AC97 GPIO expanders:"
487
488config GPIO_UCB1400
489	bool "Philips UCB1400 GPIO"
490	depends on UCB1400_CORE
491	help
492	  This enables support for the Philips UCB1400 GPIO pins.
493	  The UCB1400 is an AC97 audio codec.
494
495comment "MODULbus GPIO expanders:"
496
497config GPIO_JANZ_TTL
498	tristate "Janz VMOD-TTL Digital IO Module"
499	depends on MFD_JANZ_CMODIO
500	help
501	  This enables support for the Janz VMOD-TTL Digital IO module.
502	  This driver provides support for driving the pins in output
503	  mode only. Input mode is not supported.
504
505config GPIO_AB8500
506	bool "ST-Ericsson AB8500 Mixed Signal Circuit gpio functions"
507	depends on AB8500_CORE && BROKEN
508	help
509	  Select this to enable the AB8500 IC GPIO driver
510
511config GPIO_TPS65910
512	bool "TPS65910 GPIO"
513	depends on MFD_TPS65910
514	help
515	  Select this option to enable GPIO driver for the TPS65910
516	  chip family.
517endif
518