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 KP |
89 | config GPIO_EXYNOS4 |
90 | bool "Samsung Exynos4 GPIO library support" | |
91 | default y if CPU_EXYNOS4210 | |
fac04863 | 92 | depends on ARM |
ab48f161 KP |
93 | help |
94 | Say yes here to support Samsung Exynos4 series SoCs GPIO library | |
95 | ||
7b2fa570 GL |
96 | config GPIO_MXS |
97 | def_bool y | |
98 | depends on ARCH_MXS | |
99 | ||
fed6a022 KP |
100 | config GPIO_PLAT_SAMSUNG |
101 | bool "Samsung SoCs GPIO library support" | |
102 | default y if SAMSUNG_GPIOLIB_4BIT | |
fac04863 | 103 | depends on ARM |
fed6a022 KP |
104 | help |
105 | Say yes here to support Samsung SoCs GPIO library | |
106 | ||
82ab0f75 KP |
107 | config GPIO_S5PC100 |
108 | bool "Samsung S5PC100 GPIO library support" | |
109 | default y if CPU_S5PC100 | |
fac04863 | 110 | depends on ARM |
82ab0f75 KP |
111 | help |
112 | Say yes here to support Samsung S5PC100 SoCs GPIO library | |
113 | ||
347ec4e4 KP |
114 | config GPIO_S5PV210 |
115 | bool "Samsung S5PV210/S5PC110 GPIO library support" | |
116 | default y if CPU_S5PV210 | |
fac04863 | 117 | depends on ARM |
347ec4e4 KP |
118 | help |
119 | Say yes here to support Samsung S5PV210/S5PC110 SoCs GPIO library | |
120 | ||
1e9c2859 BS |
121 | config GPIO_PL061 |
122 | bool "PrimeCell PL061 GPIO support" | |
123 | depends on ARM_AMBA | |
124 | help | |
125 | Say yes here to support the PrimeCell PL061 GPIO device | |
126 | ||
0bcb6069 JL |
127 | config GPIO_XILINX |
128 | bool "Xilinx GPIO support" | |
6fa612b5 | 129 | depends on PPC_OF || MICROBLAZE |
0bcb6069 JL |
130 | help |
131 | Say yes here to support the Xilinx FPGA GPIO device | |
132 | ||
27fdd325 YY |
133 | config GPIO_VR41XX |
134 | tristate "NEC VR4100 series General-purpose I/O Uint support" | |
135 | depends on CPU_VR41XX | |
136 | help | |
137 | Say yes here to support the NEC VR4100 series General-purpose I/O Uint | |
138 | ||
be9b06b2 | 139 | config GPIO_SCH |
f04ddfcd | 140 | tristate "Intel SCH/TunnelCreek GPIO" |
6cff9e2b | 141 | depends on PCI && X86 |
860fb8c1 | 142 | select MFD_CORE |
be9b06b2 DT |
143 | select LPC_SCH |
144 | help | |
f04ddfcd DT |
145 | Say yes here to support GPIO interface on Intel Poulsbo SCH |
146 | or Intel Tunnel Creek processor. | |
be9b06b2 DT |
147 | The Intel SCH contains a total of 14 GPIO pins. Ten GPIOs are |
148 | powered by the core power rail and are turned off during sleep | |
149 | modes (S3 and higher). The remaining four GPIOs are powered by | |
150 | the Intel SCH suspend power supply. These GPIOs remain | |
151 | active during S3. The suspend powered GPIOs can be used to wake the | |
152 | system from the Suspend-to-RAM state. | |
f04ddfcd DT |
153 | The Intel Tunnel Creek processor has 5 GPIOs powered by the |
154 | core power rail and 9 from suspend power supply. | |
be9b06b2 DT |
155 | |
156 | This driver can also be built as a module. If so, the module | |
157 | will be called sch-gpio. | |
158 | ||
99ea2626 DD |
159 | config GPIO_VX855 |
160 | tristate "VIA VX855/VX875 GPIO" | |
6cff9e2b | 161 | depends on MFD_SUPPORT && PCI |
99ea2626 DD |
162 | select MFD_CORE |
163 | select MFD_VX855 | |
164 | help | |
165 | Support access to the VX855/VX875 GPIO lines through the gpio library. | |
166 | ||
167 | This driver provides common support for accessing the device, | |
168 | additional drivers must be enabled in order to use the | |
169 | functionality of the device. | |
170 | ||
a9c5fff5 DB |
171 | comment "I2C GPIO expanders:" |
172 | ||
e952805d WS |
173 | config GPIO_MAX7300 |
174 | tristate "Maxim MAX7300 GPIO expander" | |
175 | depends on I2C | |
176 | select GPIO_MAX730X | |
177 | help | |
178 | GPIO driver for Maxim MAX7301 I2C-based GPIO expander. | |
179 | ||
bbcd6d54 EM |
180 | config GPIO_MAX732X |
181 | tristate "MAX7319, MAX7320-7327 I2C Port Expanders" | |
182 | depends on I2C | |
183 | help | |
184 | Say yes here to support the MAX7319, MAX7320-7327 series of I2C | |
185 | Port Expanders. Each IO port on these chips has a fixed role of | |
186 | Input (designated by 'I'), Push-Pull Output ('O'), or Open-Drain | |
187 | Input and Output (designed by 'P'). The combinations are listed | |
188 | below: | |
189 | ||
190 | 8 bits: max7319 (8I), max7320 (8O), max7321 (8P), | |
191 | max7322 (4I4O), max7323 (4P4O) | |
192 | ||
193 | 16 bits: max7324 (8I8O), max7325 (8P8O), | |
194 | max7326 (4I12O), max7327 (4P12O) | |
195 | ||
196 | Board setup code must specify the model to use, and the start | |
197 | number for these GPIOs. | |
198 | ||
a80a0bbe MZ |
199 | config GPIO_MAX732X_IRQ |
200 | bool "Interrupt controller support for MAX732x" | |
201 | depends on GPIO_MAX732X=y && GENERIC_HARDIRQS | |
202 | help | |
203 | Say yes here to enable the max732x to be used as an interrupt | |
204 | controller. It requires the driver to be built in the kernel. | |
205 | ||
f3dc3630 | 206 | config GPIO_PCA953X |
ab5dc372 | 207 | tristate "PCA953x, PCA955x, TCA64xx, and MAX7310 I/O ports" |
9e60fdcf | 208 | depends on I2C |
209 | help | |
7059d4b0 DB |
210 | Say yes here to provide access to several register-oriented |
211 | SMBus I/O expanders, made mostly by NXP or TI. Compatible | |
212 | models include: | |
213 | ||
214 | 4 bits: pca9536, pca9537 | |
215 | ||
ab5dc372 DB |
216 | 8 bits: max7310, pca9534, pca9538, pca9554, pca9557, |
217 | tca6408 | |
7059d4b0 | 218 | |
ab5dc372 | 219 | 16 bits: pca9535, pca9539, pca9555, tca6416 |
9e60fdcf | 220 | |
221 | This driver can also be built as a module. If so, the module | |
f3dc3630 | 222 | will be called pca953x. |
9e60fdcf | 223 | |
89ea8bbe MZ |
224 | config GPIO_PCA953X_IRQ |
225 | bool "Interrupt controller support for PCA953x" | |
226 | depends on GPIO_PCA953X=y | |
227 | help | |
228 | Say yes here to enable the pca953x to be used as an interrupt | |
229 | controller. It requires the driver to be built in the kernel. | |
230 | ||
15fae37d | 231 | config GPIO_PCF857X |
1673ad52 | 232 | tristate "PCF857x, PCA{85,96}7x, and MAX732[89] I2C GPIO expanders" |
15fae37d DB |
233 | depends on I2C |
234 | help | |
235 | Say yes here to provide access to most "quasi-bidirectional" I2C | |
236 | GPIO expanders used for additional digital outputs or inputs. | |
237 | Most of these parts are from NXP, though TI is a second source for | |
238 | some of them. Compatible models include: | |
239 | ||
240 | 8 bits: pcf8574, pcf8574a, pca8574, pca8574a, | |
1673ad52 DB |
241 | pca9670, pca9672, pca9674, pca9674a, |
242 | max7328, max7329 | |
15fae37d DB |
243 | |
244 | 16 bits: pcf8575, pcf8575c, pca8575, | |
245 | pca9671, pca9673, pca9675 | |
246 | ||
247 | Your board setup code will need to declare the expanders in | |
248 | use, and assign numbers to the GPIOs they expose. Those GPIOs | |
249 | can then be used from drivers and other kernel code, just like | |
250 | other GPIOs, but only accessible from task contexts. | |
251 | ||
252 | This driver provides an in-kernel interface to those GPIOs using | |
253 | platform-neutral GPIO calls. | |
254 | ||
c34f16b7 GB |
255 | config GPIO_SX150X |
256 | bool "Semtech SX150x I2C GPIO expander" | |
257 | depends on I2C=y | |
258 | default n | |
259 | help | |
260 | Say yes here to provide support for Semtech SX150-series I2C | |
261 | GPIO expanders. Compatible models include: | |
262 | ||
263 | 8 bits: sx1508q | |
264 | 16 bits: sx1509q | |
265 | ||
03f822f5 RV |
266 | config GPIO_STMPE |
267 | bool "STMPE GPIOs" | |
268 | depends on MFD_STMPE | |
269 | help | |
270 | This enables support for the GPIOs found on the STMPE I/O | |
271 | Expanders. | |
272 | ||
f4e8afdc SI |
273 | config GPIO_TC3589X |
274 | bool "TC3589X GPIOs" | |
275 | depends on MFD_TC3589X | |
d88b25be | 276 | help |
f4e8afdc | 277 | This enables support for the GPIOs found on the TC3589X |
d88b25be RV |
278 | I/O Expander. |
279 | ||
e9d35947 DB |
280 | config GPIO_TWL4030 |
281 | tristate "TWL4030, TWL5030, and TPS659x0 GPIOs" | |
282 | depends on TWL4030_CORE | |
283 | help | |
284 | Say yes here to access the GPIO signals of various multi-function | |
285 | power management chips from Texas Instruments. | |
286 | ||
e4b736f1 MB |
287 | config GPIO_WM831X |
288 | tristate "WM831x GPIOs" | |
289 | depends on MFD_WM831X | |
290 | help | |
291 | Say yes here to access the GPIO signals of WM831x power management | |
292 | chips from Wolfson Microelectronics. | |
293 | ||
38f6ce45 MB |
294 | config GPIO_WM8350 |
295 | tristate "WM8350 GPIOs" | |
296 | depends on MFD_WM8350 | |
297 | help | |
298 | Say yes here to access the GPIO signals of WM8350 power management | |
299 | chips from Wolfson Microelectronics. | |
300 | ||
2955c309 MB |
301 | config GPIO_WM8994 |
302 | tristate "WM8994 GPIOs" | |
303 | depends on MFD_WM8994 | |
304 | help | |
305 | Say yes here to access the GPIO signals of WM8994 audio hub | |
306 | CODECs from Wolfson Microelectronics. | |
307 | ||
ef72af40 MH |
308 | config GPIO_ADP5520 |
309 | tristate "GPIO Support for ADP5520 PMIC" | |
310 | depends on PMIC_ADP5520 | |
311 | help | |
312 | This option enables support for on-chip GPIO found | |
313 | on Analog Devices ADP5520 PMICs. | |
314 | ||
315 | To compile this driver as a module, choose M here: the module will | |
316 | be called adp5520-gpio. | |
317 | ||
80884094 MH |
318 | config GPIO_ADP5588 |
319 | tristate "ADP5588 I2C GPIO expander" | |
320 | depends on I2C | |
321 | help | |
322 | This option enables support for 18 GPIOs found | |
323 | on Analog Devices ADP5588 GPIO Expanders. | |
324 | To compile this driver as a module, choose M here: the module will be | |
325 | called adp5588-gpio. | |
326 | ||
459773ae MH |
327 | config GPIO_ADP5588_IRQ |
328 | bool "Interrupt controller support for ADP5588" | |
329 | depends on GPIO_ADP5588=y | |
330 | help | |
331 | Say yes here to enable the adp5588 to be used as an interrupt | |
332 | controller. It requires the driver to be built in the kernel. | |
333 | ||
ff1d5c2f MB |
334 | comment "PCI GPIO expanders:" |
335 | ||
5f0a96b0 AS |
336 | config GPIO_CS5535 |
337 | tristate "AMD CS5535/CS5536 GPIO support" | |
073cc4e9 | 338 | depends on PCI && X86 && !CS5535_GPIO && MFD_CS5535 |
5f0a96b0 AS |
339 | help |
340 | The AMD CS5535 and CS5536 southbridges support 28 GPIO pins that | |
341 | can be used for quite a number of things. The CS5535/6 is found on | |
342 | AMD Geode and Lemote Yeeloong devices. | |
343 | ||
344 | If unsure, say N. | |
345 | ||
ff1d5c2f MB |
346 | config GPIO_BT8XX |
347 | tristate "BT8XX GPIO abuser" | |
348 | depends on PCI && VIDEO_BT848=n | |
349 | help | |
350 | The BT8xx frame grabber chip has 24 GPIO pins than can be abused | |
351 | as a cheap PCI GPIO card. | |
352 | ||
353 | This chip can be found on Miro, Hauppauge and STB TV-cards. | |
354 | ||
355 | The card needs to be physically altered for using it as a | |
356 | GPIO card. For more information on how to build a GPIO card | |
357 | from a BT8xx TV card, see the documentation file at | |
358 | Documentation/bt8xxgpio.txt | |
359 | ||
360 | If unsure, say N. | |
361 | ||
8bf02617 | 362 | config GPIO_LANGWELL |
8081c84c | 363 | bool "Intel Langwell/Penwell GPIO support" |
61ab3fe5 | 364 | depends on PCI && X86 |
8bf02617 | 365 | help |
8081c84c | 366 | Say Y here to support Intel Langwell/Penwell GPIO. |
8bf02617 | 367 | |
04c17aa8 | 368 | config GPIO_PCH |
bc786cce | 369 | tristate "Intel EG20T PCH / OKI SEMICONDUCTOR ML7223 IOH GPIO" |
61ab3fe5 | 370 | depends on PCI && X86 |
04c17aa8 TM |
371 | help |
372 | This driver is for PCH(Platform controller Hub) GPIO of Intel Topcliff | |
373 | which is an IOH(Input/Output Hub) for x86 embedded processor. | |
374 | This driver can access PCH GPIO device. | |
375 | ||
bc786cce TM |
376 | This driver also can be used for OKI SEMICONDUCTOR IOH(Input/ |
377 | Output Hub), ML7223. | |
378 | ML7223 IOH is for MP(Media Phone) use. | |
379 | ML7223 is companion chip for Intel Atom E6xx series. | |
380 | ML7223 is completely compatible for Intel EG20T PCH. | |
381 | ||
49a36793 TM |
382 | config GPIO_ML_IOH |
383 | tristate "OKI SEMICONDUCTOR ML7213 IOH GPIO support" | |
384 | depends on PCI | |
385 | help | |
386 | ML7213 is companion chip for Intel Atom E6xx series. | |
387 | This driver can be used for OKI SEMICONDUCTOR ML7213 IOH(Input/Output | |
388 | Hub) which is for IVI(In-Vehicle Infotainment) use. | |
389 | This driver can access the IOH's GPIO device. | |
390 | ||
35570ac6 RR |
391 | config GPIO_TIMBERDALE |
392 | bool "Support for timberdale GPIO IP" | |
6cff9e2b | 393 | depends on MFD_TIMBERDALE && HAS_IOMEM |
35570ac6 RR |
394 | ---help--- |
395 | Add support for the GPIO IP in the timberdale FPGA. | |
396 | ||
9956d02d FF |
397 | config GPIO_RDC321X |
398 | tristate "RDC R-321x GPIO support" | |
6cff9e2b | 399 | depends on PCI |
6f7ab524 | 400 | select MFD_SUPPORT |
e4be3cb7 | 401 | select MFD_CORE |
9956d02d FF |
402 | select MFD_RDC321X |
403 | help | |
404 | Support for the RDC R321x SoC GPIOs over southbridge | |
405 | PCI configuration space. | |
406 | ||
a9c5fff5 DB |
407 | comment "SPI GPIO expanders:" |
408 | ||
0c36ec31 JB |
409 | config GPIO_MAX7301 |
410 | tristate "Maxim MAX7301 GPIO expander" | |
411 | depends on SPI_MASTER | |
e952805d | 412 | select GPIO_MAX730X |
0c36ec31 | 413 | help |
e952805d | 414 | GPIO driver for Maxim MAX7301 SPI-based GPIO expander. |
0c36ec31 | 415 | |
e58b9e27 | 416 | config GPIO_MCP23S08 |
0b7bb77f | 417 | tristate "Microchip MCP23Sxx I/O expander" |
e58b9e27 DB |
418 | depends on SPI_MASTER |
419 | help | |
0b7bb77f PK |
420 | SPI driver for Microchip MCP23S08/MPC23S17 I/O expanders. |
421 | This provides a GPIO interface supporting inputs and outputs. | |
e58b9e27 | 422 | |
1e5db006 RR |
423 | config GPIO_MC33880 |
424 | tristate "Freescale MC33880 high-side/low-side switch" | |
425 | depends on SPI_MASTER | |
426 | help | |
427 | SPI driver for Freescale MC33880 high-side/low-side switch. | |
428 | This provides GPIO interface supporting inputs and outputs. | |
429 | ||
ead6db08 MG |
430 | config GPIO_74X164 |
431 | tristate "74x164 serial-in/parallel-out 8-bits shift register" | |
432 | depends on SPI_MASTER | |
433 | help | |
434 | Platform driver for 74x164 compatible serial-in/parallel-out | |
435 | 8-outputs shift registers. This driver can be used to provide access | |
436 | to more gpio outputs. | |
437 | ||
4cf8e53b MV |
438 | comment "AC97 GPIO expanders:" |
439 | ||
440 | config GPIO_UCB1400 | |
441 | bool "Philips UCB1400 GPIO" | |
442 | depends on UCB1400_CORE | |
443 | help | |
444 | This enables support for the Philips UCB1400 GPIO pins. | |
445 | The UCB1400 is an AC97 audio codec. | |
446 | ||
447 | To compile this driver as a module, choose M here: the | |
448 | module will be called ucb1400_gpio. | |
449 | ||
800e69fb IS |
450 | comment "MODULbus GPIO expanders:" |
451 | ||
452 | config GPIO_JANZ_TTL | |
453 | tristate "Janz VMOD-TTL Digital IO Module" | |
454 | depends on MFD_JANZ_CMODIO | |
455 | help | |
456 | This enables support for the Janz VMOD-TTL Digital IO module. | |
457 | This driver provides support for driving the pins in output | |
458 | mode only. Input mode is not supported. | |
459 | ||
0cb3fcd7 BB |
460 | config AB8500_GPIO |
461 | bool "ST-Ericsson AB8500 Mixed Signal Circuit gpio functions" | |
9ad198cb | 462 | depends on AB8500_CORE && BROKEN |
0cb3fcd7 BB |
463 | help |
464 | Select this to enable the AB8500 IC GPIO driver | |
83545d83 JEC |
465 | |
466 | config GPIO_TPS65910 | |
467 | bool "TPS65910 GPIO" | |
468 | depends on MFD_TPS65910 | |
469 | help | |
470 | Select this option to enable GPIO driver for the TPS65910 | |
471 | chip family. | |
7444a72e | 472 | endif |