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