Commit | Line | Data |
---|---|---|
a9c5fff5 | 1 | # |
e849dc04 | 2 | # GPIO infrastructure and drivers |
a9c5fff5 DB |
3 | # |
4 | ||
7444a72e | 5 | config ARCH_WANT_OPTIONAL_GPIOLIB |
a9c5fff5 | 6 | bool |
7444a72e MB |
7 | help |
8 | Select this config option from the architecture Kconfig, if | |
9 | it is possible to use gpiolib on the architecture, but let the | |
10 | user decide whether to actually build it or not. | |
11 | Select this instead of ARCH_REQUIRE_GPIOLIB, if your architecture does | |
12 | not depend on GPIOs being available, but rather let the user | |
13 | decide whether he needs it or not. | |
14 | ||
15 | config ARCH_REQUIRE_GPIOLIB | |
16 | bool | |
17 | select GPIOLIB | |
a9c5fff5 DB |
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. | |
7444a72e MB |
22 | Selecting this from the architecture code will cause the gpiolib |
23 | code to always get built in. | |
24 | ||
25 | ||
26 | ||
27 | menuconfig GPIOLIB | |
28 | bool "GPIO Support" | |
29 | depends on ARCH_WANT_OPTIONAL_GPIOLIB || ARCH_REQUIRE_GPIOLIB | |
30 | select GENERIC_GPIO | |
31 | help | |
32 | This enables GPIO support through the generic GPIO library. | |
33 | You only need to enable this, if you also want to enable | |
e849dc04 | 34 | one or more of the GPIO drivers below. |
7444a72e MB |
35 | |
36 | If unsure, say N. | |
a9c5fff5 | 37 | |
7444a72e | 38 | if GPIOLIB |
a9c5fff5 DB |
39 | |
40 | config DEBUG_GPIO | |
41 | bool "Debug GPIO calls" | |
42 | depends on DEBUG_KERNEL | |
43 | help | |
44 | Say Y here to add some extra checks and diagnostics to GPIO calls. | |
692105b8 ML |
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 | |
a9c5fff5 DB |
48 | slower. The diagnostics help catch the type of setup errors |
49 | that are most common when setting up new platforms or boards. | |
50 | ||
d8f388d8 DB |
51 | config GPIO_SYSFS |
52 | bool "/sys/class/gpio/... (sysfs interface)" | |
53 | depends on SYSFS && EXPERIMENTAL | |
54 | help | |
55 | Say Y here to add a sysfs interface for GPIOs. | |
56 | ||
57 | This is mostly useful to work around omissions in a system's | |
58 | kernel support. Those are common in custom and semicustom | |
59 | hardware assembled using standard kernels with a minimum of | |
60 | custom patches. In those cases, userspace code may import | |
61 | a given GPIO from the kernel, if no kernel driver requested it. | |
62 | ||
63 | Kernel drivers may also request that a particular GPIO be | |
64 | exported to userspace; this can be useful when debugging. | |
65 | ||
e849dc04 | 66 | # put drivers in the right section, in alphabetical order |
a9c5fff5 | 67 | |
e952805d WS |
68 | config GPIO_MAX730X |
69 | tristate | |
70 | ||
e849dc04 | 71 | comment "Memory mapped GPIO drivers:" |
0bcb6069 | 72 | |
280df6b3 JI |
73 | config GPIO_BASIC_MMIO_CORE |
74 | tristate | |
75 | help | |
76 | Provides core functionality for basic memory-mapped GPIO controllers. | |
77 | ||
aeec56e3 AV |
78 | config GPIO_BASIC_MMIO |
79 | tristate "Basic memory-mapped GPIO controllers support" | |
280df6b3 | 80 | select GPIO_BASIC_MMIO_CORE |
aeec56e3 AV |
81 | help |
82 | Say yes here to support basic memory-mapped GPIO controllers. | |
83 | ||
9cc0cb3c DT |
84 | config GPIO_IT8761E |
85 | tristate "IT8761E GPIO support" | |
9cc0cb3c DT |
86 | help |
87 | Say yes here to support GPIO functionality of IT8761E super I/O chip. | |
88 | ||
ab48f161 | 89 | config GPIO_EXYNOS4 |
32919a28 HS |
90 | def_bool y |
91 | depends on CPU_EXYNOS4210 | |
ab48f161 | 92 | |
fed6a022 | 93 | config GPIO_PLAT_SAMSUNG |
32919a28 HS |
94 | def_bool y |
95 | depends on SAMSUNG_GPIOLIB_4BIT | |
fed6a022 | 96 | |
82ab0f75 | 97 | config GPIO_S5PC100 |
32919a28 HS |
98 | def_bool y |
99 | depends on CPU_S5PC100 | |
82ab0f75 | 100 | |
347ec4e4 | 101 | config GPIO_S5PV210 |
32919a28 HS |
102 | def_bool y |
103 | depends on CPU_S5PV210 | |
347ec4e4 | 104 | |
1e9c2859 BS |
105 | config GPIO_PL061 |
106 | bool "PrimeCell PL061 GPIO support" | |
107 | depends on ARM_AMBA | |
108 | help | |
109 | Say yes here to support the PrimeCell PL061 GPIO device | |
110 | ||
0bcb6069 JL |
111 | config GPIO_XILINX |
112 | bool "Xilinx GPIO support" | |
6fa612b5 | 113 | depends on PPC_OF || MICROBLAZE |
0bcb6069 JL |
114 | help |
115 | Say yes here to support the Xilinx FPGA GPIO device | |
116 | ||
27fdd325 YY |
117 | config GPIO_VR41XX |
118 | tristate "NEC VR4100 series General-purpose I/O Uint support" | |
119 | depends on CPU_VR41XX | |
120 | help | |
121 | Say yes here to support the NEC VR4100 series General-purpose I/O Uint | |
122 | ||
be9b06b2 | 123 | config GPIO_SCH |
f04ddfcd | 124 | tristate "Intel SCH/TunnelCreek GPIO" |
6cff9e2b | 125 | depends on PCI && X86 |
860fb8c1 | 126 | select MFD_CORE |
be9b06b2 DT |
127 | select LPC_SCH |
128 | help | |
f04ddfcd DT |
129 | Say yes here to support GPIO interface on Intel Poulsbo SCH |
130 | or Intel Tunnel Creek processor. | |
be9b06b2 DT |
131 | The Intel SCH contains a total of 14 GPIO pins. Ten GPIOs are |
132 | powered by the core power rail and are turned off during sleep | |
133 | modes (S3 and higher). The remaining four GPIOs are powered by | |
134 | the Intel SCH suspend power supply. These GPIOs remain | |
135 | active during S3. The suspend powered GPIOs can be used to wake the | |
136 | system from the Suspend-to-RAM state. | |
f04ddfcd DT |
137 | The Intel Tunnel Creek processor has 5 GPIOs powered by the |
138 | core power rail and 9 from suspend power supply. | |
be9b06b2 DT |
139 | |
140 | This driver can also be built as a module. If so, the module | |
141 | will be called sch-gpio. | |
142 | ||
99ea2626 DD |
143 | config GPIO_VX855 |
144 | tristate "VIA VX855/VX875 GPIO" | |
6cff9e2b | 145 | depends on MFD_SUPPORT && PCI |
99ea2626 DD |
146 | select MFD_CORE |
147 | select MFD_VX855 | |
148 | help | |
149 | Support access to the VX855/VX875 GPIO lines through the gpio library. | |
150 | ||
151 | This driver provides common support for accessing the device, | |
152 | additional drivers must be enabled in order to use the | |
153 | functionality of the device. | |
154 | ||
a9c5fff5 DB |
155 | comment "I2C GPIO expanders:" |
156 | ||
e952805d WS |
157 | config GPIO_MAX7300 |
158 | tristate "Maxim MAX7300 GPIO expander" | |
159 | depends on I2C | |
160 | select GPIO_MAX730X | |
161 | help | |
162 | GPIO driver for Maxim MAX7301 I2C-based GPIO expander. | |
163 | ||
bbcd6d54 EM |
164 | config GPIO_MAX732X |
165 | tristate "MAX7319, MAX7320-7327 I2C Port Expanders" | |
166 | depends on I2C | |
167 | help | |
168 | Say yes here to support the MAX7319, MAX7320-7327 series of I2C | |
169 | Port Expanders. Each IO port on these chips has a fixed role of | |
170 | Input (designated by 'I'), Push-Pull Output ('O'), or Open-Drain | |
171 | Input and Output (designed by 'P'). The combinations are listed | |
172 | below: | |
173 | ||
174 | 8 bits: max7319 (8I), max7320 (8O), max7321 (8P), | |
175 | max7322 (4I4O), max7323 (4P4O) | |
176 | ||
177 | 16 bits: max7324 (8I8O), max7325 (8P8O), | |
178 | max7326 (4I12O), max7327 (4P12O) | |
179 | ||
180 | Board setup code must specify the model to use, and the start | |
181 | number for these GPIOs. | |
182 | ||
a80a0bbe MZ |
183 | config GPIO_MAX732X_IRQ |
184 | bool "Interrupt controller support for MAX732x" | |
185 | depends on GPIO_MAX732X=y && GENERIC_HARDIRQS | |
186 | help | |
187 | Say yes here to enable the max732x to be used as an interrupt | |
188 | controller. It requires the driver to be built in the kernel. | |
189 | ||
f3dc3630 | 190 | config GPIO_PCA953X |
ab5dc372 | 191 | tristate "PCA953x, PCA955x, TCA64xx, and MAX7310 I/O ports" |
9e60fdcf | 192 | depends on I2C |
193 | help | |
7059d4b0 DB |
194 | Say yes here to provide access to several register-oriented |
195 | SMBus I/O expanders, made mostly by NXP or TI. Compatible | |
196 | models include: | |
197 | ||
198 | 4 bits: pca9536, pca9537 | |
199 | ||
ab5dc372 DB |
200 | 8 bits: max7310, pca9534, pca9538, pca9554, pca9557, |
201 | tca6408 | |
7059d4b0 | 202 | |
ab5dc372 | 203 | 16 bits: pca9535, pca9539, pca9555, tca6416 |
9e60fdcf | 204 | |
205 | This driver can also be built as a module. If so, the module | |
f3dc3630 | 206 | will be called pca953x. |
9e60fdcf | 207 | |
89ea8bbe MZ |
208 | config GPIO_PCA953X_IRQ |
209 | bool "Interrupt controller support for PCA953x" | |
210 | depends on GPIO_PCA953X=y | |
211 | help | |
212 | Say yes here to enable the pca953x to be used as an interrupt | |
213 | controller. It requires the driver to be built in the kernel. | |
214 | ||
15fae37d | 215 | config GPIO_PCF857X |
1673ad52 | 216 | tristate "PCF857x, PCA{85,96}7x, and MAX732[89] I2C GPIO expanders" |
15fae37d DB |
217 | depends on I2C |
218 | help | |
219 | Say yes here to provide access to most "quasi-bidirectional" I2C | |
220 | GPIO expanders used for additional digital outputs or inputs. | |
221 | Most of these parts are from NXP, though TI is a second source for | |
222 | some of them. Compatible models include: | |
223 | ||
224 | 8 bits: pcf8574, pcf8574a, pca8574, pca8574a, | |
1673ad52 DB |
225 | pca9670, pca9672, pca9674, pca9674a, |
226 | max7328, max7329 | |
15fae37d DB |
227 | |
228 | 16 bits: pcf8575, pcf8575c, pca8575, | |
229 | pca9671, pca9673, pca9675 | |
230 | ||
231 | Your board setup code will need to declare the expanders in | |
232 | use, and assign numbers to the GPIOs they expose. Those GPIOs | |
233 | can then be used from drivers and other kernel code, just like | |
234 | other GPIOs, but only accessible from task contexts. | |
235 | ||
236 | This driver provides an in-kernel interface to those GPIOs using | |
237 | platform-neutral GPIO calls. | |
238 | ||
c34f16b7 GB |
239 | config GPIO_SX150X |
240 | bool "Semtech SX150x I2C GPIO expander" | |
241 | depends on I2C=y | |
242 | default n | |
243 | help | |
244 | Say yes here to provide support for Semtech SX150-series I2C | |
245 | GPIO expanders. Compatible models include: | |
246 | ||
247 | 8 bits: sx1508q | |
248 | 16 bits: sx1509q | |
249 | ||
03f822f5 RV |
250 | config GPIO_STMPE |
251 | bool "STMPE GPIOs" | |
252 | depends on MFD_STMPE | |
253 | help | |
254 | This enables support for the GPIOs found on the STMPE I/O | |
255 | Expanders. | |
256 | ||
f4e8afdc SI |
257 | config GPIO_TC3589X |
258 | bool "TC3589X GPIOs" | |
259 | depends on MFD_TC3589X | |
d88b25be | 260 | help |
f4e8afdc | 261 | This enables support for the GPIOs found on the TC3589X |
d88b25be RV |
262 | I/O Expander. |
263 | ||
e9d35947 DB |
264 | config GPIO_TWL4030 |
265 | tristate "TWL4030, TWL5030, and TPS659x0 GPIOs" | |
266 | depends on TWL4030_CORE | |
267 | help | |
268 | Say yes here to access the GPIO signals of various multi-function | |
269 | power management chips from Texas Instruments. | |
270 | ||
e4b736f1 MB |
271 | config GPIO_WM831X |
272 | tristate "WM831x GPIOs" | |
273 | depends on MFD_WM831X | |
274 | help | |
275 | Say yes here to access the GPIO signals of WM831x power management | |
276 | chips from Wolfson Microelectronics. | |
277 | ||
38f6ce45 MB |
278 | config GPIO_WM8350 |
279 | tristate "WM8350 GPIOs" | |
280 | depends on MFD_WM8350 | |
281 | help | |
282 | Say yes here to access the GPIO signals of WM8350 power management | |
283 | chips from Wolfson Microelectronics. | |
284 | ||
2955c309 MB |
285 | config GPIO_WM8994 |
286 | tristate "WM8994 GPIOs" | |
287 | depends on MFD_WM8994 | |
288 | help | |
289 | Say yes here to access the GPIO signals of WM8994 audio hub | |
290 | CODECs from Wolfson Microelectronics. | |
291 | ||
ef72af40 MH |
292 | config GPIO_ADP5520 |
293 | tristate "GPIO Support for ADP5520 PMIC" | |
294 | depends on PMIC_ADP5520 | |
295 | help | |
296 | This option enables support for on-chip GPIO found | |
297 | on Analog Devices ADP5520 PMICs. | |
298 | ||
299 | To compile this driver as a module, choose M here: the module will | |
300 | be called adp5520-gpio. | |
301 | ||
80884094 MH |
302 | config GPIO_ADP5588 |
303 | tristate "ADP5588 I2C GPIO expander" | |
304 | depends on I2C | |
305 | help | |
306 | This option enables support for 18 GPIOs found | |
307 | on Analog Devices ADP5588 GPIO Expanders. | |
308 | To compile this driver as a module, choose M here: the module will be | |
309 | called adp5588-gpio. | |
310 | ||
459773ae MH |
311 | config GPIO_ADP5588_IRQ |
312 | bool "Interrupt controller support for ADP5588" | |
313 | depends on GPIO_ADP5588=y | |
314 | help | |
315 | Say yes here to enable the adp5588 to be used as an interrupt | |
316 | controller. It requires the driver to be built in the kernel. | |
317 | ||
ff1d5c2f MB |
318 | comment "PCI GPIO expanders:" |
319 | ||
5f0a96b0 AS |
320 | config GPIO_CS5535 |
321 | tristate "AMD CS5535/CS5536 GPIO support" | |
073cc4e9 | 322 | depends on PCI && X86 && !CS5535_GPIO && MFD_CS5535 |
5f0a96b0 AS |
323 | help |
324 | The AMD CS5535 and CS5536 southbridges support 28 GPIO pins that | |
325 | can be used for quite a number of things. The CS5535/6 is found on | |
326 | AMD Geode and Lemote Yeeloong devices. | |
327 | ||
328 | If unsure, say N. | |
329 | ||
ff1d5c2f MB |
330 | config GPIO_BT8XX |
331 | tristate "BT8XX GPIO abuser" | |
332 | depends on PCI && VIDEO_BT848=n | |
333 | help | |
334 | The BT8xx frame grabber chip has 24 GPIO pins than can be abused | |
335 | as a cheap PCI GPIO card. | |
336 | ||
337 | This chip can be found on Miro, Hauppauge and STB TV-cards. | |
338 | ||
339 | The card needs to be physically altered for using it as a | |
340 | GPIO card. For more information on how to build a GPIO card | |
341 | from a BT8xx TV card, see the documentation file at | |
342 | Documentation/bt8xxgpio.txt | |
343 | ||
344 | If unsure, say N. | |
345 | ||
8bf02617 | 346 | config GPIO_LANGWELL |
8081c84c | 347 | bool "Intel Langwell/Penwell GPIO support" |
61ab3fe5 | 348 | depends on PCI && X86 |
8bf02617 | 349 | help |
8081c84c | 350 | Say Y here to support Intel Langwell/Penwell GPIO. |
8bf02617 | 351 | |
04c17aa8 | 352 | config GPIO_PCH |
bc786cce | 353 | tristate "Intel EG20T PCH / OKI SEMICONDUCTOR ML7223 IOH GPIO" |
61ab3fe5 | 354 | depends on PCI && X86 |
04c17aa8 TM |
355 | help |
356 | This driver is for PCH(Platform controller Hub) GPIO of Intel Topcliff | |
357 | which is an IOH(Input/Output Hub) for x86 embedded processor. | |
358 | This driver can access PCH GPIO device. | |
359 | ||
bc786cce TM |
360 | This driver also can be used for OKI SEMICONDUCTOR IOH(Input/ |
361 | Output Hub), ML7223. | |
362 | ML7223 IOH is for MP(Media Phone) use. | |
363 | ML7223 is companion chip for Intel Atom E6xx series. | |
364 | ML7223 is completely compatible for Intel EG20T PCH. | |
365 | ||
49a36793 TM |
366 | config GPIO_ML_IOH |
367 | tristate "OKI SEMICONDUCTOR ML7213 IOH GPIO support" | |
368 | depends on PCI | |
369 | help | |
370 | ML7213 is companion chip for Intel Atom E6xx series. | |
371 | This driver can be used for OKI SEMICONDUCTOR ML7213 IOH(Input/Output | |
372 | Hub) which is for IVI(In-Vehicle Infotainment) use. | |
373 | This driver can access the IOH's GPIO device. | |
374 | ||
35570ac6 RR |
375 | config GPIO_TIMBERDALE |
376 | bool "Support for timberdale GPIO IP" | |
6cff9e2b | 377 | depends on MFD_TIMBERDALE && HAS_IOMEM |
35570ac6 RR |
378 | ---help--- |
379 | Add support for the GPIO IP in the timberdale FPGA. | |
380 | ||
9956d02d FF |
381 | config GPIO_RDC321X |
382 | tristate "RDC R-321x GPIO support" | |
6cff9e2b | 383 | depends on PCI |
6f7ab524 | 384 | select MFD_SUPPORT |
e4be3cb7 | 385 | select MFD_CORE |
9956d02d FF |
386 | select MFD_RDC321X |
387 | help | |
388 | Support for the RDC R321x SoC GPIOs over southbridge | |
389 | PCI configuration space. | |
390 | ||
a9c5fff5 DB |
391 | comment "SPI GPIO expanders:" |
392 | ||
0c36ec31 JB |
393 | config GPIO_MAX7301 |
394 | tristate "Maxim MAX7301 GPIO expander" | |
395 | depends on SPI_MASTER | |
e952805d | 396 | select GPIO_MAX730X |
0c36ec31 | 397 | help |
e952805d | 398 | GPIO driver for Maxim MAX7301 SPI-based GPIO expander. |
0c36ec31 | 399 | |
e58b9e27 | 400 | config GPIO_MCP23S08 |
0b7bb77f | 401 | tristate "Microchip MCP23Sxx I/O expander" |
e58b9e27 DB |
402 | depends on SPI_MASTER |
403 | help | |
0b7bb77f PK |
404 | SPI driver for Microchip MCP23S08/MPC23S17 I/O expanders. |
405 | This provides a GPIO interface supporting inputs and outputs. | |
e58b9e27 | 406 | |
1e5db006 RR |
407 | config GPIO_MC33880 |
408 | tristate "Freescale MC33880 high-side/low-side switch" | |
409 | depends on SPI_MASTER | |
410 | help | |
411 | SPI driver for Freescale MC33880 high-side/low-side switch. | |
412 | This provides GPIO interface supporting inputs and outputs. | |
413 | ||
ead6db08 MG |
414 | config GPIO_74X164 |
415 | tristate "74x164 serial-in/parallel-out 8-bits shift register" | |
416 | depends on SPI_MASTER | |
417 | help | |
418 | Platform driver for 74x164 compatible serial-in/parallel-out | |
419 | 8-outputs shift registers. This driver can be used to provide access | |
420 | to more gpio outputs. | |
421 | ||
4cf8e53b MV |
422 | comment "AC97 GPIO expanders:" |
423 | ||
424 | config GPIO_UCB1400 | |
425 | bool "Philips UCB1400 GPIO" | |
426 | depends on UCB1400_CORE | |
427 | help | |
428 | This enables support for the Philips UCB1400 GPIO pins. | |
429 | The UCB1400 is an AC97 audio codec. | |
430 | ||
431 | To compile this driver as a module, choose M here: the | |
432 | module will be called ucb1400_gpio. | |
433 | ||
800e69fb IS |
434 | comment "MODULbus GPIO expanders:" |
435 | ||
436 | config GPIO_JANZ_TTL | |
437 | tristate "Janz VMOD-TTL Digital IO Module" | |
438 | depends on MFD_JANZ_CMODIO | |
439 | help | |
440 | This enables support for the Janz VMOD-TTL Digital IO module. | |
441 | This driver provides support for driving the pins in output | |
442 | mode only. Input mode is not supported. | |
443 | ||
0cb3fcd7 BB |
444 | config AB8500_GPIO |
445 | bool "ST-Ericsson AB8500 Mixed Signal Circuit gpio functions" | |
9ad198cb | 446 | depends on AB8500_CORE && BROKEN |
0cb3fcd7 BB |
447 | help |
448 | Select this to enable the AB8500 IC GPIO driver | |
83545d83 JEC |
449 | |
450 | config GPIO_TPS65910 | |
451 | bool "TPS65910 GPIO" | |
452 | depends on MFD_TPS65910 | |
453 | help | |
454 | Select this option to enable GPIO driver for the TPS65910 | |
455 | chip family. | |
7444a72e | 456 | endif |