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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# SPDX-License-Identifier: GPL-2.0-only
2#
3# GPIO infrastructure and drivers
4#
5
6config ARCH_HAVE_CUSTOM_GPIO_H
7 bool
8 help
9 Selecting this config option from the architecture Kconfig allows
10 the architecture to provide a custom asm/gpio.h implementation
11 overriding the default implementations. New uses of this are
12 strongly discouraged.
13
14menuconfig GPIOLIB
15 bool "GPIO Support"
16 help
17 This enables GPIO support through the generic GPIO library.
18 You only need to enable this, if you also want to enable
19 one or more of the GPIO drivers below.
20
21 If unsure, say N.
22
23if GPIOLIB
24
25config GPIOLIB_FASTPATH_LIMIT
26 int "Maximum number of GPIOs for fast path"
27 range 32 512
28 default 512
29 help
30 This adjusts the point at which certain APIs will switch from
31 using a stack allocated buffer to a dynamically allocated buffer.
32
33 You shouldn't need to change this unless you really need to
34 optimize either stack space or performance. Change this carefully
35 since setting an incorrect value could cause stack corruption.
36
37config OF_GPIO
38 def_bool y
39 depends on OF
40 depends on HAS_IOMEM
41
42config GPIO_ACPI
43 def_bool y
44 depends on ACPI
45
46config GPIOLIB_IRQCHIP
47 select IRQ_DOMAIN
48 bool
49
50config DEBUG_GPIO
51 bool "Debug GPIO calls"
52 depends on DEBUG_KERNEL
53 help
54 Say Y here to add some extra checks and diagnostics to GPIO calls.
55 These checks help ensure that GPIOs have been properly initialized
56 before they are used, and that sleeping calls are not made from
57 non-sleeping contexts. They can make bitbanged serial protocols
58 slower. The diagnostics help catch the type of setup errors
59 that are most common when setting up new platforms or boards.
60
61config GPIO_SYSFS
62 bool "/sys/class/gpio/... (sysfs interface)"
63 depends on SYSFS
64 help
65 Say Y here to add the legacy sysfs interface for GPIOs.
66
67 This ABI is deprecated. If you want to use GPIO from userspace,
68 use the character device /dev/gpiochipN with the appropriate
69 ioctl() operations instead. The character device is always
70 available.
71
72config GPIO_GENERIC
73 depends on HAS_IOMEM # Only for IOMEM drivers
74 tristate
75
76# put drivers in the right section, in alphabetical order
77
78# This symbol is selected by both I2C and SPI expanders
79config GPIO_MAX730X
80 tristate
81
82menu "Memory mapped GPIO drivers"
83 depends on HAS_IOMEM
84
85config GPIO_74XX_MMIO
86 tristate "GPIO driver for 74xx-ICs with MMIO access"
87 depends on OF_GPIO
88 select GPIO_GENERIC
89 help
90 Say yes here to support GPIO functionality for 74xx-compatible ICs
91 with MMIO access. Compatible models include:
92 1 bit: 741G125 (Input), 741G74 (Output)
93 2 bits: 742G125 (Input), 7474 (Output)
94 4 bits: 74125 (Input), 74175 (Output)
95 6 bits: 74365 (Input), 74174 (Output)
96 8 bits: 74244 (Input), 74273 (Output)
97 16 bits: 741624 (Input), 7416374 (Output)
98
99config GPIO_ALTERA
100 tristate "Altera GPIO"
101 depends on OF_GPIO
102 select GPIOLIB_IRQCHIP
103 help
104 Say Y or M here to build support for the Altera PIO device.
105
106 If driver is built as a module it will be called gpio-altera.
107
108config GPIO_AMDPT
109 tristate "AMD Promontory GPIO support"
110 depends on ACPI
111 select GPIO_GENERIC
112 help
113 driver for GPIO functionality on Promontory IOHub
114 Require ACPI ASL code to enumerate as a platform device.
115
116config GPIO_ASPEED
117 tristate "Aspeed GPIO support"
118 depends on (ARCH_ASPEED || COMPILE_TEST) && OF_GPIO
119 select GPIOLIB_IRQCHIP
120 help
121 Say Y here to support Aspeed AST2400 and AST2500 GPIO controllers.
122
123config GPIO_ATH79
124 tristate "Atheros AR71XX/AR724X/AR913X GPIO support"
125 default y if ATH79
126 depends on ATH79 || COMPILE_TEST
127 select GPIO_GENERIC
128 select GPIOLIB_IRQCHIP
129 help
130 Select this option to enable GPIO driver for
131 Atheros AR71XX/AR724X/AR913X SoC devices.
132
133config GPIO_RASPBERRYPI_EXP
134 tristate "Raspberry Pi 3 GPIO Expander"
135 default RASPBERRYPI_FIRMWARE
136 depends on OF_GPIO
137 # Make sure not 'y' when RASPBERRYPI_FIRMWARE is 'm'. This can only
138 # happen when COMPILE_TEST=y, hence the added !RASPBERRYPI_FIRMWARE.
139 depends on (ARCH_BCM2835 && RASPBERRYPI_FIRMWARE) || (COMPILE_TEST && !RASPBERRYPI_FIRMWARE)
140 help
141 Turn on GPIO support for the expander on Raspberry Pi 3 boards, using
142 the firmware mailbox to communicate with VideoCore on BCM283x chips.
143
144config GPIO_BCM_KONA
145 bool "Broadcom Kona GPIO"
146 depends on OF_GPIO && (ARCH_BCM_MOBILE || COMPILE_TEST)
147 help
148 Turn on GPIO support for Broadcom "Kona" chips.
149
150config GPIO_BRCMSTB
151 tristate "BRCMSTB GPIO support"
152 default y if (ARCH_BRCMSTB || BMIPS_GENERIC)
153 depends on OF_GPIO && (ARCH_BRCMSTB || BMIPS_GENERIC || COMPILE_TEST)
154 select GPIO_GENERIC
155 select IRQ_DOMAIN
156 help
157 Say yes here to enable GPIO support for Broadcom STB (BCM7XXX) SoCs.
158
159config GPIO_CADENCE
160 tristate "Cadence GPIO support"
161 depends on OF_GPIO
162 select GPIO_GENERIC
163 select GPIOLIB_IRQCHIP
164 help
165 Say yes here to enable support for Cadence GPIO controller.
166
167config GPIO_CLPS711X
168 tristate "CLPS711X GPIO support"
169 depends on ARCH_CLPS711X || COMPILE_TEST
170 select GPIO_GENERIC
171 help
172 Say yes here to support GPIO on CLPS711X SoCs.
173
174config GPIO_DAVINCI
175 bool "TI Davinci/Keystone GPIO support"
176 default y if ARCH_DAVINCI
177 depends on (ARM || ARM64) && (ARCH_DAVINCI || ARCH_KEYSTONE || ARCH_K3)
178 help
179 Say yes here to enable GPIO support for TI Davinci/Keystone SoCs.
180
181config GPIO_DWAPB
182 tristate "Synopsys DesignWare APB GPIO driver"
183 select GPIO_GENERIC
184 select GENERIC_IRQ_CHIP
185 help
186 Say Y or M here to build support for the Synopsys DesignWare APB
187 GPIO block.
188
189config GPIO_EIC_SPRD
190 tristate "Spreadtrum EIC support"
191 depends on ARCH_SPRD || COMPILE_TEST
192 depends on OF_GPIO
193 select GPIOLIB_IRQCHIP
194 help
195 Say yes here to support Spreadtrum EIC device.
196
197config GPIO_EM
198 tristate "Emma Mobile GPIO"
199 depends on (ARCH_EMEV2 || COMPILE_TEST) && OF_GPIO
200 help
201 Say yes here to support GPIO on Renesas Emma Mobile SoCs.
202
203config GPIO_EP93XX
204 def_bool y
205 depends on ARCH_EP93XX
206 select GPIO_GENERIC
207 select GPIOLIB_IRQCHIP
208
209config GPIO_EXAR
210 tristate "Support for GPIO pins on XR17V352/354/358"
211 depends on SERIAL_8250_EXAR
212 help
213 Selecting this option will enable handling of GPIO pins present
214 on Exar XR17V352/354/358 chips.
215
216config GPIO_GE_FPGA
217 bool "GE FPGA based GPIO"
218 depends on GE_FPGA
219 select GPIO_GENERIC
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
228config GPIO_FTGPIO010
229 bool "Faraday FTGPIO010 GPIO"
230 depends on OF_GPIO
231 select GPIO_GENERIC
232 select GPIOLIB_IRQCHIP
233 default (ARCH_GEMINI || ARCH_MOXART)
234 help
235 Support for common GPIOs from the Faraday FTGPIO010 IP core, found in
236 Cortina systems Gemini platforms, Moxa ART and others.
237
238config GPIO_GENERIC_PLATFORM
239 tristate "Generic memory-mapped GPIO controller support (MMIO platform device)"
240 select GPIO_GENERIC
241 help
242 Say yes here to support basic platform_device memory-mapped GPIO controllers.
243
244config GPIO_GRGPIO
245 tristate "Aeroflex Gaisler GRGPIO support"
246 depends on OF_GPIO
247 select GPIO_GENERIC
248 select IRQ_DOMAIN
249 help
250 Select this to support Aeroflex Gaisler GRGPIO cores from the GRLIB
251 VHDL IP core library.
252
253config GPIO_HLWD
254 tristate "Nintendo Wii (Hollywood) GPIO"
255 depends on OF_GPIO
256 select GPIO_GENERIC
257 select GPIOLIB_IRQCHIP
258 help
259 Select this to support the GPIO controller of the Nintendo Wii.
260
261 If unsure, say N.
262
263config GPIO_ICH
264 tristate "Intel ICH GPIO"
265 depends on PCI && X86
266 select MFD_CORE
267 select LPC_ICH
268 help
269 Say yes here to support the GPIO functionality of a number of Intel
270 ICH-based chipsets. Currently supported devices: ICH6, ICH7, ICH8
271 ICH9, ICH10, Series 5/3400 (eg Ibex Peak), Series 6/C200 (eg
272 Cougar Point), NM10 (Tiger Point), and 3100 (Whitmore Lake).
273
274 If unsure, say N.
275
276config GPIO_IOP
277 tristate "Intel IOP GPIO"
278 depends on ARCH_IOP32X || COMPILE_TEST
279 select GPIO_GENERIC
280 help
281 Say yes here to support the GPIO functionality of a number of Intel
282 IOP32X or IOP33X.
283
284 If unsure, say N.
285
286config GPIO_IXP4XX
287 bool "Intel IXP4xx GPIO"
288 depends on ARM # For <asm/mach-types.h>
289 depends on ARCH_IXP4XX
290 select GPIO_GENERIC
291 select GPIOLIB_IRQCHIP
292 select IRQ_DOMAIN_HIERARCHY
293 help
294 Say yes here to support the GPIO functionality of a number of Intel
295 IXP4xx series of chips.
296
297 If unsure, say N.
298
299config GPIO_LOONGSON
300 bool "Loongson-2/3 GPIO support"
301 depends on CPU_LOONGSON2 || CPU_LOONGSON3
302 help
303 driver for GPIO functionality on Loongson-2F/3A/3B processors.
304
305config GPIO_LPC18XX
306 tristate "NXP LPC18XX/43XX GPIO support"
307 default y if ARCH_LPC18XX
308 depends on OF_GPIO && (ARCH_LPC18XX || COMPILE_TEST)
309 select IRQ_DOMAIN_HIERARCHY
310 help
311 Select this option to enable GPIO driver for
312 NXP LPC18XX/43XX devices.
313
314config GPIO_LPC32XX
315 tristate "NXP LPC32XX GPIO support"
316 depends on OF_GPIO && (ARCH_LPC32XX || COMPILE_TEST)
317 help
318 Select this option to enable GPIO driver for
319 NXP LPC32XX devices.
320
321config GPIO_LYNXPOINT
322 tristate "Intel Lynxpoint GPIO support"
323 depends on ACPI && X86
324 select GPIOLIB_IRQCHIP
325 help
326 driver for GPIO functionality on Intel Lynxpoint PCH chipset
327 Requires ACPI device enumeration code to set up a platform device.
328
329config GPIO_MB86S7X
330 tristate "GPIO support for Fujitsu MB86S7x Platforms"
331 help
332 Say yes here to support the GPIO controller in Fujitsu MB86S70 SoCs.
333
334config GPIO_MENZ127
335 tristate "MEN 16Z127 GPIO support"
336 depends on MCB
337 select GPIO_GENERIC
338 help
339 Say yes here to support the MEN 16Z127 GPIO Controller
340
341config GPIO_MM_LANTIQ
342 bool "Lantiq Memory mapped GPIOs"
343 depends on LANTIQ && SOC_XWAY
344 help
345 This enables support for memory mapped GPIOs on the External Bus Unit
346 (EBU) found on Lantiq SoCs. The gpios are output only as they are
347 created by attaching a 16bit latch to the bus.
348
349config GPIO_MPC5200
350 def_bool y
351 depends on PPC_MPC52xx
352
353config GPIO_MPC8XXX
354 bool "MPC512x/MPC8xxx/QorIQ GPIO support"
355 depends on PPC_MPC512x || PPC_MPC831x || PPC_MPC834x || PPC_MPC837x || \
356 FSL_SOC_BOOKE || PPC_86xx || ARCH_LAYERSCAPE || ARM || \
357 COMPILE_TEST
358 select GPIO_GENERIC
359 select IRQ_DOMAIN
360 help
361 Say Y here if you're going to use hardware that connects to the
362 MPC512x/831x/834x/837x/8572/8610/QorIQ GPIOs.
363
364config GPIO_MT7621
365 bool "Mediatek MT7621 GPIO Support"
366 depends on SOC_MT7620 || SOC_MT7621 || COMPILE_TEST
367 depends on OF_GPIO
368 select GPIO_GENERIC
369 select GPIOLIB_IRQCHIP
370 help
371 Say yes here to support the Mediatek MT7621 SoC GPIO device
372
373config GPIO_MVEBU
374 def_bool y
375 depends on PLAT_ORION || ARCH_MVEBU
376 depends on OF_GPIO
377 select GENERIC_IRQ_CHIP
378 select REGMAP_MMIO
379
380config GPIO_MXC
381 def_bool y
382 depends on ARCH_MXC
383 select GPIO_GENERIC
384 select GENERIC_IRQ_CHIP
385
386config GPIO_MXS
387 def_bool y
388 depends on ARCH_MXS
389 select GPIO_GENERIC
390 select GENERIC_IRQ_CHIP
391
392config GPIO_OCTEON
393 tristate "Cavium OCTEON GPIO"
394 depends on GPIOLIB && CAVIUM_OCTEON_SOC
395 default y
396 help
397 Say yes here to support the on-chip GPIO lines on the OCTEON
398 family of SOCs.
399
400config GPIO_OMAP
401 tristate "TI OMAP GPIO support" if ARCH_OMAP2PLUS || COMPILE_TEST
402 default y if ARCH_OMAP
403 depends on ARM
404 select GENERIC_IRQ_CHIP
405 select GPIOLIB_IRQCHIP
406 help
407 Say yes here to enable GPIO support for TI OMAP SoCs.
408
409config GPIO_PL061
410 bool "PrimeCell PL061 GPIO support"
411 depends on ARM_AMBA
412 select IRQ_DOMAIN
413 select GPIOLIB_IRQCHIP
414 help
415 Say yes here to support the PrimeCell PL061 GPIO device
416
417config GPIO_PMIC_EIC_SPRD
418 tristate "Spreadtrum PMIC EIC support"
419 depends on MFD_SC27XX_PMIC || COMPILE_TEST
420 depends on OF_GPIO
421 select GPIOLIB_IRQCHIP
422 help
423 Say yes here to support Spreadtrum PMIC EIC device.
424
425config GPIO_PXA
426 bool "PXA GPIO support"
427 depends on ARCH_PXA || ARCH_MMP
428 help
429 Say yes here to support the PXA GPIO device
430
431config GPIO_RCAR
432 tristate "Renesas R-Car GPIO"
433 depends on ARCH_RENESAS || COMPILE_TEST
434 select GPIOLIB_IRQCHIP
435 help
436 Say yes here to support GPIO on Renesas R-Car SoCs.
437
438config GPIO_REG
439 bool
440 help
441 A 32-bit single register GPIO fixed in/out implementation. This
442 can be used to represent any register as a set of GPIO signals.
443
444config GPIO_SAMA5D2_PIOBU
445 tristate "SAMA5D2 PIOBU GPIO support"
446 depends on MFD_SYSCON
447 depends on OF_GPIO
448 select GPIO_SYSCON
449 help
450 Say yes here to use the PIOBU pins as GPIOs.
451
452 PIOBU pins on the SAMA5D2 can be used as GPIOs.
453 The difference from regular GPIOs is that they
454 maintain their value during backup/self-refresh.
455
456config GPIO_SIOX
457 tristate "SIOX GPIO support"
458 depends on SIOX
459 select GPIOLIB_IRQCHIP
460 help
461 Say yes here to support SIOX I/O devices. These are units connected
462 via a SIOX bus and have a number of fixed-direction I/O lines.
463
464config GPIO_SNPS_CREG
465 bool "Synopsys GPIO via CREG (Control REGisters) driver"
466 depends on ARC || COMPILE_TEST
467 depends on OF_GPIO
468 help
469 This driver supports GPIOs via CREG on various Synopsys SoCs.
470 This is a single-register MMIO GPIO driver for complex cases
471 where only several fields in register belong to GPIO lines and
472 each GPIO line owns a field with different length and on/off value.
473
474config GPIO_SPEAR_SPICS
475 bool "ST SPEAr13xx SPI Chip Select as GPIO support"
476 depends on PLAT_SPEAR
477 select GENERIC_IRQ_CHIP
478 help
479 Say yes here to support ST SPEAr SPI Chip Select as GPIO device
480
481config GPIO_SPRD
482 tristate "Spreadtrum GPIO support"
483 depends on ARCH_SPRD || COMPILE_TEST
484 depends on OF_GPIO
485 select GPIOLIB_IRQCHIP
486 help
487 Say yes here to support Spreadtrum GPIO device.
488
489config GPIO_STA2X11
490 bool "STA2x11/ConneXt GPIO support"
491 depends on MFD_STA2X11
492 select GENERIC_IRQ_CHIP
493 help
494 Say yes here to support the STA2x11/ConneXt GPIO device.
495 The GPIO module has 128 GPIO pins with alternate functions.
496
497config GPIO_STP_XWAY
498 bool "XWAY STP GPIOs"
499 depends on SOC_XWAY || COMPILE_TEST
500 depends on OF_GPIO
501 help
502 This enables support for the Serial To Parallel (STP) unit found on
503 XWAY SoC. The STP allows the SoC to drive a shift registers cascade,
504 that can be up to 24 bit. This peripheral is aimed at driving leds.
505 Some of the gpios/leds can be auto updated by the soc with dsl and
506 phy status.
507
508config GPIO_SYSCON
509 tristate "GPIO based on SYSCON"
510 depends on MFD_SYSCON && OF
511 help
512 Say yes here to support GPIO functionality though SYSCON driver.
513
514config GPIO_TB10X
515 bool
516 select GPIO_GENERIC
517 select GENERIC_IRQ_CHIP
518 select OF_GPIO
519
520config GPIO_TEGRA
521 bool "NVIDIA Tegra GPIO support"
522 default ARCH_TEGRA
523 depends on ARCH_TEGRA || COMPILE_TEST
524 depends on OF_GPIO
525 help
526 Say yes here to support GPIO pins on NVIDIA Tegra SoCs.
527
528config GPIO_TEGRA186
529 tristate "NVIDIA Tegra186 GPIO support"
530 default ARCH_TEGRA_186_SOC
531 depends on ARCH_TEGRA_186_SOC || COMPILE_TEST
532 depends on OF_GPIO
533 select GPIOLIB_IRQCHIP
534 help
535 Say yes here to support GPIO pins on NVIDIA Tegra186 SoCs.
536
537config GPIO_TS4800
538 tristate "TS-4800 DIO blocks and compatibles"
539 depends on OF_GPIO
540 depends on SOC_IMX51 || COMPILE_TEST
541 select GPIO_GENERIC
542 help
543 This driver support TS-4800 FPGA GPIO controllers.
544
545config GPIO_THUNDERX
546 tristate "Cavium ThunderX/OCTEON-TX GPIO"
547 depends on ARCH_THUNDER || (64BIT && COMPILE_TEST)
548 depends on PCI_MSI
549 select GPIOLIB_IRQCHIP
550 select IRQ_DOMAIN_HIERARCHY
551 select IRQ_FASTEOI_HIERARCHY_HANDLERS
552 help
553 Say yes here to support the on-chip GPIO lines on the ThunderX
554 and OCTEON-TX families of SoCs.
555
556config GPIO_UNIPHIER
557 tristate "UniPhier GPIO support"
558 depends on ARCH_UNIPHIER || COMPILE_TEST
559 depends on OF_GPIO
560 select IRQ_DOMAIN_HIERARCHY
561 help
562 Say yes here to support UniPhier GPIOs.
563
564config GPIO_VF610
565 def_bool y
566 depends on ARCH_MXC && SOC_VF610
567 select GPIOLIB_IRQCHIP
568 help
569 Say yes here to support Vybrid vf610 GPIOs.
570
571config GPIO_VR41XX
572 tristate "NEC VR4100 series General-purpose I/O Uint support"
573 depends on CPU_VR41XX
574 help
575 Say yes here to support the NEC VR4100 series General-purpose I/O Uint
576
577config GPIO_VX855
578 tristate "VIA VX855/VX875 GPIO"
579 depends on (X86 || COMPILE_TEST) && PCI
580 select MFD_CORE
581 select MFD_VX855
582 help
583 Support access to the VX855/VX875 GPIO lines through the gpio library.
584
585 This driver provides common support for accessing the device,
586 additional drivers must be enabled in order to use the
587 functionality of the device.
588
589config GPIO_XGENE
590 bool "APM X-Gene GPIO controller support"
591 depends on ARM64 && OF_GPIO
592 help
593 This driver is to support the GPIO block within the APM X-Gene SoC
594 platform's generic flash controller. The GPIO pins are muxed with
595 the generic flash controller's address and data pins. Say yes
596 here to enable the GFC GPIO functionality.
597
598config GPIO_XGENE_SB
599 tristate "APM X-Gene GPIO standby controller support"
600 depends on ARCH_XGENE && OF_GPIO
601 select GPIO_GENERIC
602 select GPIOLIB_IRQCHIP
603 select IRQ_DOMAIN_HIERARCHY
604 help
605 This driver supports the GPIO block within the APM X-Gene
606 Standby Domain. Say yes here to enable the GPIO functionality.
607
608config GPIO_XILINX
609 tristate "Xilinx GPIO support"
610 help
611 Say yes here to support the Xilinx FPGA GPIO device
612
613config GPIO_XLP
614 tristate "Netlogic XLP GPIO support"
615 depends on OF_GPIO && (CPU_XLP || ARCH_THUNDER2 || COMPILE_TEST)
616 select GPIOLIB_IRQCHIP
617 help
618 This driver provides support for GPIO interface on Netlogic XLP MIPS64
619 SoCs. Currently supported XLP variants are XLP8XX, XLP3XX, XLP2XX,
620 XLP9XX and XLP5XX. The same GPIO controller block is also present in
621 Cavium's ThunderX2 CN99XX SoCs.
622
623 If unsure, say N.
624
625config GPIO_XTENSA
626 bool "Xtensa GPIO32 support"
627 depends on XTENSA
628 depends on HAVE_XTENSA_GPIO32
629 depends on !SMP
630 help
631 Say yes here to support the Xtensa internal GPIO32 IMPWIRE (input)
632 and EXPSTATE (output) ports
633
634config GPIO_ZEVIO
635 bool "LSI ZEVIO SoC memory mapped GPIOs"
636 depends on ARM && OF_GPIO
637 help
638 Say yes here to support the GPIO controller in LSI ZEVIO SoCs.
639
640config GPIO_ZYNQ
641 tristate "Xilinx Zynq GPIO support"
642 depends on ARCH_ZYNQ || ARCH_ZYNQMP
643 select GPIOLIB_IRQCHIP
644 help
645 Say yes here to support Xilinx Zynq GPIO controller.
646
647config GPIO_ZX
648 bool "ZTE ZX GPIO support"
649 depends on ARCH_ZX || COMPILE_TEST
650 select GPIOLIB_IRQCHIP
651 help
652 Say yes here to support the GPIO device on ZTE ZX SoCs.
653
654config GPIO_LOONGSON1
655 tristate "Loongson1 GPIO support"
656 depends on MACH_LOONGSON32
657 select GPIO_GENERIC
658 help
659 Say Y or M here to support GPIO on Loongson1 SoCs.
660
661config GPIO_AMD_FCH
662 tristate "GPIO support for AMD Fusion Controller Hub (G-series SOCs)"
663 help
664 This option enables driver for GPIO on AMDs Fusion Controller Hub,
665 as found on G-series SOCs (eg. GX-412TC)
666
667 Note: This driver doesn't registers itself automatically, as it
668 needs to be provided with platform specific configuration.
669 (See eg. CONFIG_PCENGINES_APU2.)
670endmenu
671
672menu "Port-mapped I/O GPIO drivers"
673 depends on X86 # Unconditional I/O space access
674
675config GPIO_104_DIO_48E
676 tristate "ACCES 104-DIO-48E GPIO support"
677 depends on PC104
678 select ISA_BUS_API
679 select GPIOLIB_IRQCHIP
680 help
681 Enables GPIO support for the ACCES 104-DIO-48E series (104-DIO-48E,
682 104-DIO-24E). The base port addresses for the devices may be
683 configured via the base module parameter. The interrupt line numbers
684 for the devices may be configured via the irq module parameter.
685
686config GPIO_104_IDIO_16
687 tristate "ACCES 104-IDIO-16 GPIO support"
688 depends on PC104
689 select ISA_BUS_API
690 select GPIOLIB_IRQCHIP
691 help
692 Enables GPIO support for the ACCES 104-IDIO-16 family (104-IDIO-16,
693 104-IDIO-16E, 104-IDO-16, 104-IDIO-8, 104-IDIO-8E, 104-IDO-8). The
694 base port addresses for the devices may be configured via the base
695 module parameter. The interrupt line numbers for the devices may be
696 configured via the irq module parameter.
697
698config GPIO_104_IDI_48
699 tristate "ACCES 104-IDI-48 GPIO support"
700 depends on PC104
701 select ISA_BUS_API
702 select GPIOLIB_IRQCHIP
703 help
704 Enables GPIO support for the ACCES 104-IDI-48 family (104-IDI-48A,
705 104-IDI-48AC, 104-IDI-48B, 104-IDI-48BC). The base port addresses for
706 the devices may be configured via the base module parameter. The
707 interrupt line numbers for the devices may be configured via the irq
708 module parameter.
709
710config GPIO_F7188X
711 tristate "F71869, F71869A, F71882FG, F71889F and F81866 GPIO support"
712 help
713 This option enables support for GPIOs found on Fintek Super-I/O
714 chips F71869, F71869A, F71882FG, F71889F and F81866.
715
716 To compile this driver as a module, choose M here: the module will
717 be called f7188x-gpio.
718
719config GPIO_GPIO_MM
720 tristate "Diamond Systems GPIO-MM GPIO support"
721 depends on PC104
722 select ISA_BUS_API
723 help
724 Enables GPIO support for the Diamond Systems GPIO-MM and GPIO-MM-12.
725
726 The Diamond Systems GPIO-MM device features 48 lines of digital I/O
727 via the emulation of dual 82C55A PPI chips. This driver provides GPIO
728 support for these 48 channels of digital I/O.
729
730 The base port addresses for the devices may be configured via the base
731 array module parameter.
732
733config GPIO_IT87
734 tristate "IT87xx GPIO support"
735 help
736 Say yes here to support GPIO functionality of IT87xx Super I/O chips.
737
738 This driver is tested with ITE IT8728 and IT8732 Super I/O chips, and
739 supports the IT8761E, IT8613, IT8620E, and IT8628E Super I/O chips as
740 well.
741
742 To compile this driver as a module, choose M here: the module will
743 be called gpio_it87
744
745config GPIO_SCH
746 tristate "Intel SCH/TunnelCreek/Centerton/Quark X1000 GPIO"
747 depends on (X86 || COMPILE_TEST) && PCI
748 select MFD_CORE
749 select LPC_SCH
750 help
751 Say yes here to support GPIO interface on Intel Poulsbo SCH,
752 Intel Tunnel Creek processor, Intel Centerton processor or
753 Intel Quark X1000 SoC.
754
755 The Intel SCH contains a total of 14 GPIO pins. Ten GPIOs are
756 powered by the core power rail and are turned off during sleep
757 modes (S3 and higher). The remaining four GPIOs are powered by
758 the Intel SCH suspend power supply. These GPIOs remain
759 active during S3. The suspend powered GPIOs can be used to wake the
760 system from the Suspend-to-RAM state.
761
762 The Intel Tunnel Creek processor has 5 GPIOs powered by the
763 core power rail and 9 from suspend power supply.
764
765 The Intel Centerton processor has a total of 30 GPIO pins.
766 Twenty-one are powered by the core power rail and 9 from the
767 suspend power supply.
768
769 The Intel Quark X1000 SoC has 2 GPIOs powered by the core
770 power well and 6 from the suspend power well.
771
772config GPIO_SCH311X
773 tristate "SMSC SCH311x SuperI/O GPIO"
774 help
775 Driver to enable the GPIOs found on SMSC SMSC SCH3112, SCH3114 and
776 SCH3116 "Super I/O" chipsets.
777
778 To compile this driver as a module, choose M here: the module will
779 be called gpio-sch311x.
780
781config GPIO_TS5500
782 tristate "TS-5500 DIO blocks and compatibles"
783 depends on TS5500 || COMPILE_TEST
784 help
785 This driver supports Digital I/O exposed by pin blocks found on some
786 Technologic Systems platforms. It includes, but is not limited to, 3
787 blocks of the TS-5500: DIO1, DIO2 and the LCD port, and the TS-5600
788 LCD port.
789
790config GPIO_WINBOND
791 tristate "Winbond Super I/O GPIO support"
792 select ISA_BUS_API
793 help
794 This option enables support for GPIOs found on Winbond Super I/O
795 chips.
796 Currently, only W83627UHG (also known as Nuvoton NCT6627UD) is
797 supported.
798
799 You will need to provide a module parameter "gpios", or a
800 boot-time parameter "gpio_winbond.gpios" with a bitmask of GPIO
801 ports to enable (bit 0 is GPIO1, bit 1 is GPIO2, etc.).
802
803 To compile this driver as a module, choose M here: the module will
804 be called gpio-winbond.
805
806config GPIO_WS16C48
807 tristate "WinSystems WS16C48 GPIO support"
808 select ISA_BUS_API
809 select GPIOLIB_IRQCHIP
810 help
811 Enables GPIO support for the WinSystems WS16C48. The base port
812 addresses for the devices may be configured via the base module
813 parameter. The interrupt line numbers for the devices may be
814 configured via the irq module parameter.
815
816endmenu
817
818menu "I2C GPIO expanders"
819 depends on I2C
820
821config GPIO_ADP5588
822 tristate "ADP5588 I2C GPIO expander"
823 help
824 This option enables support for 18 GPIOs found
825 on Analog Devices ADP5588 GPIO Expanders.
826
827config GPIO_ADP5588_IRQ
828 bool "Interrupt controller support for ADP5588"
829 depends on GPIO_ADP5588=y
830 select GPIOLIB_IRQCHIP
831 help
832 Say yes here to enable the adp5588 to be used as an interrupt
833 controller. It requires the driver to be built in the kernel.
834
835config GPIO_ADNP
836 tristate "Avionic Design N-bit GPIO expander"
837 depends on OF_GPIO
838 select GPIOLIB_IRQCHIP
839 help
840 This option enables support for N GPIOs found on Avionic Design
841 I2C GPIO expanders. The register space will be extended by powers
842 of two, so the controller will need to accommodate for that. For
843 example: if a controller provides 48 pins, 6 registers will be
844 enough to represent all pins, but the driver will assume a
845 register layout for 64 pins (8 registers).
846
847config GPIO_GW_PLD
848 tristate "Gateworks PLD GPIO Expander"
849 depends on OF_GPIO
850 help
851 Say yes here to provide access to the Gateworks I2C PLD GPIO
852 Expander. This is used at least on the Cambria GW2358-4.
853
854config GPIO_MAX7300
855 tristate "Maxim MAX7300 GPIO expander"
856 select GPIO_MAX730X
857 help
858 GPIO driver for Maxim MAX7300 I2C-based GPIO expander.
859
860config GPIO_MAX732X
861 tristate "MAX7319, MAX7320-7327 I2C Port Expanders"
862 help
863 Say yes here to support the MAX7319, MAX7320-7327 series of I2C
864 Port Expanders. Each IO port on these chips has a fixed role of
865 Input (designated by 'I'), Push-Pull Output ('O'), or Open-Drain
866 Input and Output (designed by 'P'). The combinations are listed
867 below:
868
869 8 bits: max7319 (8I), max7320 (8O), max7321 (8P),
870 max7322 (4I4O), max7323 (4P4O)
871
872 16 bits: max7324 (8I8O), max7325 (8P8O),
873 max7326 (4I12O), max7327 (4P12O)
874
875 Board setup code must specify the model to use, and the start
876 number for these GPIOs.
877
878config GPIO_MAX732X_IRQ
879 bool "Interrupt controller support for MAX732x"
880 depends on GPIO_MAX732X=y
881 select GPIOLIB_IRQCHIP
882 help
883 Say yes here to enable the max732x to be used as an interrupt
884 controller. It requires the driver to be built in the kernel.
885
886config GPIO_MC9S08DZ60
887 bool "MX35 3DS BOARD MC9S08DZ60 GPIO functions"
888 depends on I2C=y && MACH_MX35_3DS
889 help
890 Select this to enable the MC9S08DZ60 GPIO driver
891
892config GPIO_PCA953X
893 tristate "PCA95[357]x, PCA9698, TCA64xx, and MAX7310 I/O ports"
894 select REGMAP_I2C
895 help
896 Say yes here to provide access to several register-oriented
897 SMBus I/O expanders, made mostly by NXP or TI. Compatible
898 models include:
899
900 4 bits: pca9536, pca9537
901
902 8 bits: max7310, max7315, pca6107, pca9534, pca9538, pca9554,
903 pca9556, pca9557, pca9574, tca6408, tca9554, xra1202
904
905 16 bits: max7312, max7313, pca9535, pca9539, pca9555, pca9575,
906 tca6416
907
908 24 bits: tca6424
909
910 40 bits: pca9505, pca9698
911
912config GPIO_PCA953X_IRQ
913 bool "Interrupt controller support for PCA953x"
914 depends on GPIO_PCA953X=y
915 select GPIOLIB_IRQCHIP
916 help
917 Say yes here to enable the pca953x to be used as an interrupt
918 controller. It requires the driver to be built in the kernel.
919
920config GPIO_PCF857X
921 tristate "PCF857x, PCA{85,96}7x, and MAX732[89] I2C GPIO expanders"
922 select GPIOLIB_IRQCHIP
923 select IRQ_DOMAIN
924 help
925 Say yes here to provide access to most "quasi-bidirectional" I2C
926 GPIO expanders used for additional digital outputs or inputs.
927 Most of these parts are from NXP, though TI is a second source for
928 some of them. Compatible models include:
929
930 8 bits: pcf8574, pcf8574a, pca8574, pca8574a,
931 pca9670, pca9672, pca9674, pca9674a,
932 max7328, max7329
933
934 16 bits: pcf8575, pcf8575c, pca8575,
935 pca9671, pca9673, pca9675
936
937 Your board setup code will need to declare the expanders in
938 use, and assign numbers to the GPIOs they expose. Those GPIOs
939 can then be used from drivers and other kernel code, just like
940 other GPIOs, but only accessible from task contexts.
941
942 This driver provides an in-kernel interface to those GPIOs using
943 platform-neutral GPIO calls.
944
945config GPIO_TPIC2810
946 tristate "TPIC2810 8-Bit I2C GPO expander"
947 help
948 Say yes here to enable the GPO driver for the TI TPIC2810 chip.
949
950 To compile this driver as a module, choose M here: the module will
951 be called gpio-tpic2810.
952
953config GPIO_TS4900
954 tristate "Technologic Systems FPGA I2C GPIO"
955 depends on SOC_IMX6 || COMPILE_TEST
956 select REGMAP_I2C
957 help
958 Say yes here to enabled the GPIO driver for Technologic's FPGA core.
959 Series supported include TS-4100, TS-4900, TS-7970 and TS-7990.
960
961endmenu
962
963menu "MFD GPIO expanders"
964
965config GPIO_ADP5520
966 tristate "GPIO Support for ADP5520 PMIC"
967 depends on PMIC_ADP5520
968 help
969 This option enables support for on-chip GPIO found
970 on Analog Devices ADP5520 PMICs.
971
972config GPIO_ALTERA_A10SR
973 tristate "Altera Arria10 System Resource GPIO"
974 depends on MFD_ALTERA_A10SR
975 help
976 Driver for Arria10 Development Kit GPIO expansion which
977 includes reads of pushbuttons and DIP switches as well
978 as writes to LEDs.
979
980config GPIO_ARIZONA
981 tristate "Wolfson Microelectronics Arizona class devices"
982 depends on MFD_ARIZONA
983 help
984 Support for GPIOs on Wolfson Arizona class devices.
985
986config GPIO_BD70528
987 tristate "ROHM BD70528 GPIO support"
988 depends on MFD_ROHM_BD70528
989 help
990 Support for GPIOs on ROHM BD70528 PMIC. There are four GPIOs
991 available on the ROHM PMIC in total. The GPIOs can also
992 generate interrupts.
993
994 This driver can also be built as a module. If so, the module
995 will be called gpio-bd70528.
996
997config GPIO_BD9571MWV
998 tristate "ROHM BD9571 GPIO support"
999 depends on MFD_BD9571MWV
1000 help
1001 Support for GPIOs on ROHM BD9571 PMIC. There are two GPIOs
1002 available on the ROHM PMIC in total, both of which can also
1003 generate interrupts.
1004
1005 This driver can also be built as a module. If so, the module
1006 will be called gpio-bd9571mwv.
1007
1008config GPIO_CRYSTAL_COVE
1009 tristate "GPIO support for Crystal Cove PMIC"
1010 depends on (X86 || COMPILE_TEST) && INTEL_SOC_PMIC
1011 select GPIOLIB_IRQCHIP
1012 help
1013 Support for GPIO pins on Crystal Cove PMIC.
1014
1015 Say Yes if you have a Intel SoC based tablet with Crystal Cove PMIC
1016 inside.
1017
1018 This driver can also be built as a module. If so, the module will be
1019 called gpio-crystalcove.
1020
1021config GPIO_CS5535
1022 tristate "AMD CS5535/CS5536 GPIO support"
1023 depends on X86 || MIPS || COMPILE_TEST
1024 depends on MFD_CS5535
1025 help
1026 The AMD CS5535 and CS5536 southbridges support 28 GPIO pins that
1027 can be used for quite a number of things. The CS5535/6 is found on
1028 AMD Geode and Lemote Yeeloong devices.
1029
1030 If unsure, say N.
1031
1032config GPIO_DA9052
1033 tristate "Dialog DA9052 GPIO"
1034 depends on PMIC_DA9052
1035 help
1036 Say yes here to enable the GPIO driver for the DA9052 chip.
1037
1038config GPIO_DA9055
1039 tristate "Dialog Semiconductor DA9055 GPIO"
1040 depends on MFD_DA9055
1041 help
1042 Say yes here to enable the GPIO driver for the DA9055 chip.
1043
1044 The Dialog DA9055 PMIC chip has 3 GPIO pins that can be
1045 be controller by this driver.
1046
1047 If driver is built as a module it will be called gpio-da9055.
1048
1049config GPIO_DLN2
1050 tristate "Diolan DLN2 GPIO support"
1051 depends on MFD_DLN2
1052 select GPIOLIB_IRQCHIP
1053
1054 help
1055 Select this option to enable GPIO driver for the Diolan DLN2
1056 board.
1057
1058 This driver can also be built as a module. If so, the module
1059 will be called gpio-dln2.
1060
1061config HTC_EGPIO
1062 bool "HTC EGPIO support"
1063 depends on GPIOLIB && ARM
1064 help
1065 This driver supports the CPLD egpio chip present on
1066 several HTC phones. It provides basic support for input
1067 pins, output pins, and irqs.
1068
1069config GPIO_JANZ_TTL
1070 tristate "Janz VMOD-TTL Digital IO Module"
1071 depends on MFD_JANZ_CMODIO
1072 help
1073 This enables support for the Janz VMOD-TTL Digital IO module.
1074 This driver provides support for driving the pins in output
1075 mode only. Input mode is not supported.
1076
1077config GPIO_KEMPLD
1078 tristate "Kontron ETX / COMexpress GPIO"
1079 depends on MFD_KEMPLD
1080 help
1081 This enables support for the PLD GPIO interface on some Kontron ETX
1082 and COMexpress (ETXexpress) modules.
1083
1084 This driver can also be built as a module. If so, the module will be
1085 called gpio-kempld.
1086
1087config GPIO_LP3943
1088 tristate "TI/National Semiconductor LP3943 GPIO expander"
1089 depends on MFD_LP3943
1090 help
1091 GPIO driver for LP3943 MFD.
1092 LP3943 can be used as a GPIO expander which provides up to 16 GPIOs.
1093 Open drain outputs are required for this usage.
1094
1095config GPIO_LP873X
1096 tristate "TI LP873X GPO"
1097 depends on MFD_TI_LP873X
1098 help
1099 This driver supports the GPO on TI Lp873x PMICs. 2 GPOs are present
1100 on LP873X PMICs.
1101
1102 This driver can also be built as a module. If so, the module will be
1103 called gpio-lp873x.
1104
1105config GPIO_LP87565
1106 tristate "TI LP87565 GPIO"
1107 depends on MFD_TI_LP87565
1108 help
1109 This driver supports the GPIO on TI Lp873565 PMICs. 3 GPIOs are present
1110 on LP87565 PMICs.
1111
1112 This driver can also be built as a module. If so, the module will be
1113 called gpio-lp87565.
1114
1115config GPIO_MADERA
1116 tristate "Cirrus Logic Madera class codecs"
1117 depends on PINCTRL_MADERA
1118 help
1119 Support for GPIOs on Cirrus Logic Madera class codecs.
1120
1121config GPIO_MAX77620
1122 tristate "GPIO support for PMIC MAX77620 and MAX20024"
1123 depends on MFD_MAX77620
1124 help
1125 GPIO driver for MAX77620 and MAX20024 PMIC from Maxim Semiconductor.
1126 MAX77620 PMIC has 8 pins that can be configured as GPIOs. The
1127 driver also provides interrupt support for each of the gpios.
1128 Say yes here to enable the max77620 to be used as gpio controller.
1129
1130config GPIO_MAX77650
1131 tristate "Maxim MAX77650/77651 GPIO support"
1132 depends on MFD_MAX77650
1133 help
1134 GPIO driver for MAX77650/77651 PMIC from Maxim Semiconductor.
1135 These chips have a single pin that can be configured as GPIO.
1136
1137config GPIO_MSIC
1138 bool "Intel MSIC mixed signal gpio support"
1139 depends on (X86 || COMPILE_TEST) && MFD_INTEL_MSIC
1140 help
1141 Enable support for GPIO on intel MSIC controllers found in
1142 intel MID devices
1143
1144config GPIO_PALMAS
1145 bool "TI PALMAS series PMICs GPIO"
1146 depends on MFD_PALMAS
1147 help
1148 Select this option to enable GPIO driver for the TI PALMAS
1149 series chip family.
1150
1151config GPIO_RC5T583
1152 bool "RICOH RC5T583 GPIO"
1153 depends on MFD_RC5T583
1154 help
1155 Select this option to enable GPIO driver for the Ricoh RC5T583
1156 chip family.
1157 This driver provides the support for driving/reading the gpio pins
1158 of RC5T583 device through standard gpio library.
1159
1160config GPIO_STMPE
1161 bool "STMPE GPIOs"
1162 depends on MFD_STMPE
1163 depends on OF_GPIO
1164 select GPIOLIB_IRQCHIP
1165 help
1166 This enables support for the GPIOs found on the STMPE I/O
1167 Expanders.
1168
1169config GPIO_TC3589X
1170 bool "TC3589X GPIOs"
1171 depends on MFD_TC3589X
1172 depends on OF_GPIO
1173 select GPIOLIB_IRQCHIP
1174 help
1175 This enables support for the GPIOs found on the TC3589X
1176 I/O Expander.
1177
1178config GPIO_TIMBERDALE
1179 bool "Support for timberdale GPIO IP"
1180 depends on MFD_TIMBERDALE
1181 ---help---
1182 Add support for the GPIO IP in the timberdale FPGA.
1183
1184config GPIO_TPS65086
1185 tristate "TI TPS65086 GPO"
1186 depends on MFD_TPS65086
1187 help
1188 This driver supports the GPO on TI TPS65086x PMICs.
1189
1190config GPIO_TPS65218
1191 tristate "TPS65218 GPIO"
1192 depends on MFD_TPS65218
1193 help
1194 Select this option to enable GPIO driver for the TPS65218
1195 chip family.
1196
1197config GPIO_TPS6586X
1198 bool "TPS6586X GPIO"
1199 depends on MFD_TPS6586X
1200 help
1201 Select this option to enable GPIO driver for the TPS6586X
1202 chip family.
1203
1204config GPIO_TPS65910
1205 bool "TPS65910 GPIO"
1206 depends on MFD_TPS65910
1207 help
1208 Select this option to enable GPIO driver for the TPS65910
1209 chip family.
1210
1211config GPIO_TPS65912
1212 tristate "TI TPS65912 GPIO"
1213 depends on MFD_TPS65912
1214 help
1215 This driver supports TPS65912 gpio chip
1216
1217config GPIO_TPS68470
1218 bool "TPS68470 GPIO"
1219 depends on MFD_TPS68470
1220 help
1221 Select this option to enable GPIO driver for the TPS68470
1222 chip family.
1223 There are 7 GPIOs and few sensor related GPIOs supported
1224 by the TPS68470. While the 7 GPIOs can be configured as
1225 input or output as appropriate, the sensor related GPIOs
1226 are "output only" GPIOs.
1227
1228 This driver config is bool, as the GPIO functionality
1229 of the TPS68470 must be available before dependent
1230 drivers are loaded.
1231
1232config GPIO_TQMX86
1233 tristate "TQ-Systems QTMX86 GPIO"
1234 depends on MFD_TQMX86 || COMPILE_TEST
1235 select GPIOLIB_IRQCHIP
1236 help
1237 This driver supports GPIO on the TQMX86 IO controller.
1238
1239config GPIO_TWL4030
1240 tristate "TWL4030, TWL5030, and TPS659x0 GPIOs"
1241 depends on TWL4030_CORE
1242 help
1243 Say yes here to access the GPIO signals of various multi-function
1244 power management chips from Texas Instruments.
1245
1246config GPIO_TWL6040
1247 tristate "TWL6040 GPO"
1248 depends on TWL6040_CORE
1249 help
1250 Say yes here to access the GPO signals of twl6040
1251 audio chip from Texas Instruments.
1252
1253config GPIO_UCB1400
1254 tristate "Philips UCB1400 GPIO"
1255 depends on UCB1400_CORE
1256 help
1257 This enables support for the Philips UCB1400 GPIO pins.
1258 The UCB1400 is an AC97 audio codec.
1259
1260config GPIO_WHISKEY_COVE
1261 tristate "GPIO support for Whiskey Cove PMIC"
1262 depends on (X86 || COMPILE_TEST) && INTEL_SOC_PMIC_BXTWC
1263 select GPIOLIB_IRQCHIP
1264 help
1265 Support for GPIO pins on Whiskey Cove PMIC.
1266
1267 Say Yes if you have a Intel SoC based tablet with Whiskey Cove PMIC
1268 inside.
1269
1270 This driver can also be built as a module. If so, the module will be
1271 called gpio-wcove.
1272
1273config GPIO_WM831X
1274 tristate "WM831x GPIOs"
1275 depends on MFD_WM831X
1276 help
1277 Say yes here to access the GPIO signals of WM831x power management
1278 chips from Wolfson Microelectronics.
1279
1280config GPIO_WM8350
1281 tristate "WM8350 GPIOs"
1282 depends on MFD_WM8350
1283 help
1284 Say yes here to access the GPIO signals of WM8350 power management
1285 chips from Wolfson Microelectronics.
1286
1287config GPIO_WM8994
1288 tristate "WM8994 GPIOs"
1289 depends on MFD_WM8994
1290 help
1291 Say yes here to access the GPIO signals of WM8994 audio hub
1292 CODECs from Wolfson Microelectronics.
1293
1294endmenu
1295
1296menu "PCI GPIO expanders"
1297 depends on PCI
1298
1299config GPIO_AMD8111
1300 tristate "AMD 8111 GPIO driver"
1301 depends on X86 || COMPILE_TEST
1302 help
1303 The AMD 8111 south bridge contains 32 GPIO pins which can be used.
1304
1305 Note, that usually system firmware/ACPI handles GPIO pins on their
1306 own and users might easily break their systems with uncarefull usage
1307 of this driver!
1308
1309 If unsure, say N
1310
1311config GPIO_BT8XX
1312 tristate "BT8XX GPIO abuser"
1313 depends on VIDEO_BT848=n
1314 help
1315 The BT8xx frame grabber chip has 24 GPIO pins that can be abused
1316 as a cheap PCI GPIO card.
1317
1318 This chip can be found on Miro, Hauppauge and STB TV-cards.
1319
1320 The card needs to be physically altered for using it as a
1321 GPIO card. For more information on how to build a GPIO card
1322 from a BT8xx TV card, see the documentation file at
1323 Documentation/driver-api/bt8xxgpio.rst
1324
1325 If unsure, say N.
1326
1327config GPIO_INTEL_MID
1328 bool "Intel MID GPIO support"
1329 depends on X86_INTEL_MID
1330 select GPIOLIB_IRQCHIP
1331 help
1332 Say Y here to support Intel MID GPIO.
1333
1334config GPIO_MERRIFIELD
1335 tristate "Intel Merrifield GPIO support"
1336 depends on X86_INTEL_MID
1337 select GPIOLIB_IRQCHIP
1338 help
1339 Say Y here to support Intel Merrifield GPIO.
1340
1341config GPIO_MLXBF
1342 tristate "Mellanox BlueField SoC GPIO"
1343 depends on (MELLANOX_PLATFORM && ARM64 && ACPI) || (64BIT && COMPILE_TEST)
1344 select GPIO_GENERIC
1345 help
1346 Say Y here if you want GPIO support on Mellanox BlueField SoC.
1347
1348config GPIO_ML_IOH
1349 tristate "OKI SEMICONDUCTOR ML7213 IOH GPIO support"
1350 depends on X86 || COMPILE_TEST
1351 select GENERIC_IRQ_CHIP
1352 help
1353 ML7213 is companion chip for Intel Atom E6xx series.
1354 This driver can be used for OKI SEMICONDUCTOR ML7213 IOH(Input/Output
1355 Hub) which is for IVI(In-Vehicle Infotainment) use.
1356 This driver can access the IOH's GPIO device.
1357
1358config GPIO_PCH
1359 tristate "Intel EG20T PCH/LAPIS Semiconductor IOH(ML7223/ML7831) GPIO"
1360 depends on X86_32 || MIPS || COMPILE_TEST
1361 select GENERIC_IRQ_CHIP
1362 help
1363 This driver is for PCH(Platform controller Hub) GPIO of Intel Topcliff
1364 which is an IOH(Input/Output Hub) for x86 embedded processor.
1365 This driver can access PCH GPIO device.
1366
1367 This driver also can be used for LAPIS Semiconductor IOH(Input/
1368 Output Hub), ML7223 and ML7831.
1369 ML7223 IOH is for MP(Media Phone) use.
1370 ML7831 IOH is for general purpose use.
1371 ML7223/ML7831 is companion chip for Intel Atom E6xx series.
1372 ML7223/ML7831 is completely compatible for Intel EG20T PCH.
1373
1374config GPIO_PCI_IDIO_16
1375 tristate "ACCES PCI-IDIO-16 GPIO support"
1376 select GPIOLIB_IRQCHIP
1377 help
1378 Enables GPIO support for the ACCES PCI-IDIO-16. An interrupt is
1379 generated when any of the inputs change state (low to high or high to
1380 low). Input filter control is not supported by this driver, and the
1381 input filters are deactivated by this driver.
1382
1383config GPIO_PCIE_IDIO_24
1384 tristate "ACCES PCIe-IDIO-24 GPIO support"
1385 select GPIOLIB_IRQCHIP
1386 help
1387 Enables GPIO support for the ACCES PCIe-IDIO-24 family (PCIe-IDIO-24,
1388 PCIe-IDI-24, PCIe-IDO-24, PCIe-IDIO-12). An interrupt is generated
1389 when any of the inputs change state (low to high or high to low).
1390 Input filter control is not supported by this driver, and the input
1391 filters are deactivated by this driver.
1392
1393config GPIO_RDC321X
1394 tristate "RDC R-321x GPIO support"
1395 select MFD_CORE
1396 select MFD_RDC321X
1397 help
1398 Support for the RDC R321x SoC GPIOs over southbridge
1399 PCI configuration space.
1400
1401config GPIO_SODAVILLE
1402 bool "Intel Sodaville GPIO support"
1403 depends on X86 && OF
1404 select GPIO_GENERIC
1405 select GENERIC_IRQ_CHIP
1406 help
1407 Say Y here to support Intel Sodaville GPIO.
1408
1409endmenu
1410
1411menu "SPI GPIO expanders"
1412 depends on SPI_MASTER
1413
1414config GPIO_74X164
1415 tristate "74x164 serial-in/parallel-out 8-bits shift register"
1416 depends on OF_GPIO
1417 help
1418 Driver for 74x164 compatible serial-in/parallel-out 8-outputs
1419 shift registers. This driver can be used to provide access
1420 to more gpio outputs.
1421
1422config GPIO_MAX3191X
1423 tristate "Maxim MAX3191x industrial serializer"
1424 select CRC8
1425 help
1426 GPIO driver for Maxim MAX31910, MAX31911, MAX31912, MAX31913,
1427 MAX31953 and MAX31963 industrial serializer, a daisy-chainable
1428 chip to make 8 digital 24V inputs available via SPI. Supports
1429 CRC checksums to guard against electromagnetic interference,
1430 as well as undervoltage and overtemperature detection.
1431
1432config GPIO_MAX7301
1433 tristate "Maxim MAX7301 GPIO expander"
1434 select GPIO_MAX730X
1435 help
1436 GPIO driver for Maxim MAX7301 SPI-based GPIO expander.
1437
1438config GPIO_MC33880
1439 tristate "Freescale MC33880 high-side/low-side switch"
1440 help
1441 SPI driver for Freescale MC33880 high-side/low-side switch.
1442 This provides GPIO interface supporting inputs and outputs.
1443
1444config GPIO_PISOSR
1445 tristate "Generic parallel-in/serial-out shift register"
1446 help
1447 GPIO driver for SPI compatible parallel-in/serial-out shift
1448 registers. These are input only devices.
1449
1450config GPIO_XRA1403
1451 tristate "EXAR XRA1403 16-bit GPIO expander"
1452 select REGMAP_SPI
1453 help
1454 GPIO driver for EXAR XRA1403 16-bit SPI-based GPIO expander.
1455
1456config GPIO_MOXTET
1457 tristate "Turris Mox Moxtet bus GPIO expander"
1458 depends on MOXTET
1459 help
1460 Say yes here if you are building for the Turris Mox router.
1461 This is the driver needed for configuring the GPIOs via the Moxtet
1462 bus. For example the Mox module with SFP cage needs this driver
1463 so that phylink can use corresponding GPIOs.
1464
1465endmenu
1466
1467menu "USB GPIO expanders"
1468 depends on USB
1469
1470config GPIO_VIPERBOARD
1471 tristate "Viperboard GPIO a & b support"
1472 depends on MFD_VIPERBOARD
1473 help
1474 Say yes here to access the GPIO signals of Nano River
1475 Technologies Viperboard. There are two GPIO chips on the
1476 board: gpioa and gpiob.
1477 See viperboard API specification and Nano
1478 River Tech's viperboard.h for detailed meaning
1479 of the module parameters.
1480
1481endmenu
1482
1483config GPIO_MOCKUP
1484 tristate "GPIO Testing Driver"
1485 select IRQ_SIM
1486 help
1487 This enables GPIO Testing driver, which provides a way to test GPIO
1488 subsystem through sysfs(or char device) and debugfs. GPIO_SYSFS
1489 must be selected for this test.
1490 User could use it through the script in
1491 tools/testing/selftests/gpio/gpio-mockup.sh. Reference the usage in
1492 it.
1493
1494endif