Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux...
[deliverable/linux.git] / drivers / pwm / Kconfig
1 menuconfig PWM
2 bool "Pulse-Width Modulation (PWM) Support"
3 help
4 Generic Pulse-Width Modulation (PWM) support.
5
6 In Pulse-Width Modulation, a variation of the width of pulses
7 in a rectangular pulse signal is used as a means to alter the
8 average power of the signal. Applications include efficient
9 power delivery and voltage regulation. In computer systems,
10 PWMs are commonly used to control fans or the brightness of
11 display backlights.
12
13 This framework provides a generic interface to PWM devices
14 within the Linux kernel. On the driver side it provides an API
15 to register and unregister a PWM chip, an abstraction of a PWM
16 controller, that supports one or more PWM devices. Client
17 drivers can request PWM devices and use the generic framework
18 to configure as well as enable and disable them.
19
20 This generic framework replaces the legacy PWM framework which
21 allows only a single driver implementing the required API. Not
22 all legacy implementations have been ported to the framework
23 yet. The framework provides an API that is backward compatible
24 with the legacy framework so that existing client drivers
25 continue to work as expected.
26
27 If unsure, say no.
28
29 if PWM
30
31 config PWM_SYSFS
32 bool
33 default y if SYSFS
34
35 config PWM_AB8500
36 tristate "AB8500 PWM support"
37 depends on AB8500_CORE && ARCH_U8500
38 help
39 Generic PWM framework driver for Analog Baseband AB8500.
40
41 To compile this driver as a module, choose M here: the module
42 will be called pwm-ab8500.
43
44 config PWM_ATMEL
45 tristate "Atmel PWM support"
46 depends on ARCH_AT91 || AVR32
47 help
48 Generic PWM framework driver for Atmel SoC.
49
50 To compile this driver as a module, choose M here: the module
51 will be called pwm-atmel.
52
53 config PWM_ATMEL_HLCDC_PWM
54 tristate "Atmel HLCDC PWM support"
55 depends on MFD_ATMEL_HLCDC
56 help
57 Generic PWM framework driver for the PWM output of the HLCDC
58 (Atmel High-end LCD Controller). This PWM output is mainly used
59 to control the LCD backlight.
60
61 To compile this driver as a module, choose M here: the module
62 will be called pwm-atmel-hlcdc.
63
64 config PWM_ATMEL_TCB
65 tristate "Atmel TC Block PWM support"
66 depends on ATMEL_TCLIB && OF
67 help
68 Generic PWM framework driver for Atmel Timer Counter Block.
69
70 A Timer Counter Block provides 6 PWM devices grouped by 2.
71 Devices in a given group must have the same period.
72
73 To compile this driver as a module, choose M here: the module
74 will be called pwm-atmel-tcb.
75
76 config PWM_BCM_KONA
77 tristate "Kona PWM support"
78 depends on ARCH_BCM_MOBILE
79 help
80 Generic PWM framework driver for Broadcom Kona PWM block.
81
82 To compile this driver as a module, choose M here: the module
83 will be called pwm-bcm-kona.
84
85 config PWM_BCM2835
86 tristate "BCM2835 PWM support"
87 depends on ARCH_BCM2835
88 help
89 PWM framework driver for BCM2835 controller (Raspberry Pi)
90
91 To compile this driver as a module, choose M here: the module
92 will be called pwm-bcm2835.
93
94 config PWM_BFIN
95 tristate "Blackfin PWM support"
96 depends on BFIN_GPTIMERS
97 help
98 Generic PWM framework driver for Blackfin.
99
100 To compile this driver as a module, choose M here: the module
101 will be called pwm-bfin.
102
103 config PWM_CLPS711X
104 tristate "CLPS711X PWM support"
105 depends on ARCH_CLPS711X || COMPILE_TEST
106 depends on HAS_IOMEM
107 help
108 Generic PWM framework driver for Cirrus Logic CLPS711X.
109
110 To compile this driver as a module, choose M here: the module
111 will be called pwm-clps711x.
112
113 config PWM_EP93XX
114 tristate "Cirrus Logic EP93xx PWM support"
115 depends on ARCH_EP93XX
116 help
117 Generic PWM framework driver for Cirrus Logic EP93xx.
118
119 To compile this driver as a module, choose M here: the module
120 will be called pwm-ep93xx.
121
122 config PWM_FSL_FTM
123 tristate "Freescale FlexTimer Module (FTM) PWM support"
124 depends on OF
125 select REGMAP_MMIO
126 help
127 Generic FTM PWM framework driver for Freescale VF610 and
128 Layerscape LS-1 SoCs.
129
130 To compile this driver as a module, choose M here: the module
131 will be called pwm-fsl-ftm.
132
133 config PWM_IMX
134 tristate "i.MX PWM support"
135 depends on ARCH_MXC
136 help
137 Generic PWM framework driver for i.MX.
138
139 To compile this driver as a module, choose M here: the module
140 will be called pwm-imx.
141
142 config PWM_JZ4740
143 tristate "Ingenic JZ4740 PWM support"
144 depends on MACH_JZ4740
145 help
146 Generic PWM framework driver for Ingenic JZ4740 based
147 machines.
148
149 To compile this driver as a module, choose M here: the module
150 will be called pwm-jz4740.
151
152 config PWM_LP3943
153 tristate "TI/National Semiconductor LP3943 PWM support"
154 depends on MFD_LP3943
155 help
156 Generic PWM framework driver for LP3943 which supports two PWM
157 channels.
158
159 To compile this driver as a module, choose M here: the module
160 will be called pwm-lp3943.
161
162 config PWM_LPC32XX
163 tristate "LPC32XX PWM support"
164 depends on ARCH_LPC32XX
165 help
166 Generic PWM framework driver for LPC32XX. The LPC32XX SOC has two
167 PWM controllers.
168
169 To compile this driver as a module, choose M here: the module
170 will be called pwm-lpc32xx.
171
172 config PWM_LPSS
173 tristate "Intel LPSS PWM support"
174 depends on X86
175 help
176 Generic PWM framework driver for Intel Low Power Subsystem PWM
177 controller.
178
179 To compile this driver as a module, choose M here: the module
180 will be called pwm-lpss.
181
182 config PWM_LPSS_PCI
183 tristate "Intel LPSS PWM PCI driver"
184 depends on PWM_LPSS && PCI
185 help
186 The PCI driver for Intel Low Power Subsystem PWM controller.
187
188 To compile this driver as a module, choose M here: the module
189 will be called pwm-lpss-pci.
190
191 config PWM_LPSS_PLATFORM
192 tristate "Intel LPSS PWM platform driver"
193 depends on PWM_LPSS && ACPI
194 help
195 The platform driver for Intel Low Power Subsystem PWM controller.
196
197 To compile this driver as a module, choose M here: the module
198 will be called pwm-lpss-platform.
199
200 config PWM_MXS
201 tristate "Freescale MXS PWM support"
202 depends on ARCH_MXS && OF
203 select STMP_DEVICE
204 help
205 Generic PWM framework driver for Freescale MXS.
206
207 To compile this driver as a module, choose M here: the module
208 will be called pwm-mxs.
209
210 config PWM_PCA9685
211 tristate "NXP PCA9685 PWM driver"
212 depends on OF && I2C
213 select REGMAP_I2C
214 help
215 Generic PWM framework driver for NXP PCA9685 LED controller.
216
217 To compile this driver as a module, choose M here: the module
218 will be called pwm-pca9685.
219
220 config PWM_PUV3
221 tristate "PKUnity NetBook-0916 PWM support"
222 depends on ARCH_PUV3
223 help
224 Generic PWM framework driver for PKUnity NetBook-0916.
225
226 To compile this driver as a module, choose M here: the module
227 will be called pwm-puv3.
228
229 config PWM_PXA
230 tristate "PXA PWM support"
231 depends on ARCH_PXA
232 help
233 Generic PWM framework driver for PXA.
234
235 To compile this driver as a module, choose M here: the module
236 will be called pwm-pxa.
237
238 config PWM_RENESAS_TPU
239 tristate "Renesas TPU PWM support"
240 depends on ARCH_SHMOBILE || COMPILE_TEST
241 depends on HAS_IOMEM
242 help
243 This driver exposes the Timer Pulse Unit (TPU) PWM controller found
244 in Renesas chips through the PWM API.
245
246 To compile this driver as a module, choose M here: the module
247 will be called pwm-renesas-tpu.
248
249 config PWM_ROCKCHIP
250 tristate "Rockchip PWM support"
251 depends on ARCH_ROCKCHIP
252 help
253 Generic PWM framework driver for the PWM controller found on
254 Rockchip SoCs.
255
256 config PWM_SAMSUNG
257 tristate "Samsung PWM support"
258 depends on PLAT_SAMSUNG || ARCH_EXYNOS
259 help
260 Generic PWM framework driver for Samsung.
261
262 To compile this driver as a module, choose M here: the module
263 will be called pwm-samsung.
264
265 config PWM_SPEAR
266 tristate "STMicroelectronics SPEAr PWM support"
267 depends on PLAT_SPEAR
268 depends on OF
269 help
270 Generic PWM framework driver for the PWM controller on ST
271 SPEAr SoCs.
272
273 To compile this driver as a module, choose M here: the module
274 will be called pwm-spear.
275
276 config PWM_STI
277 tristate "STiH4xx PWM support"
278 depends on ARCH_STI
279 depends on OF
280 help
281 Generic PWM framework driver for STiH4xx SoCs.
282
283 To compile this driver as a module, choose M here: the module
284 will be called pwm-sti.
285
286 config PWM_TEGRA
287 tristate "NVIDIA Tegra PWM support"
288 depends on ARCH_TEGRA
289 help
290 Generic PWM framework driver for the PWFM controller found on NVIDIA
291 Tegra SoCs.
292
293 To compile this driver as a module, choose M here: the module
294 will be called pwm-tegra.
295
296 config PWM_TIECAP
297 tristate "ECAP PWM support"
298 depends on SOC_AM33XX || ARCH_DAVINCI_DA8XX
299 help
300 PWM driver support for the ECAP APWM controller found on AM33XX
301 TI SOC
302
303 To compile this driver as a module, choose M here: the module
304 will be called pwm-tiecap.
305
306 config PWM_TIEHRPWM
307 tristate "EHRPWM PWM support"
308 depends on SOC_AM33XX || ARCH_DAVINCI_DA8XX
309 help
310 PWM driver support for the EHRPWM controller found on AM33XX
311 TI SOC
312
313 To compile this driver as a module, choose M here: the module
314 will be called pwm-tiehrpwm.
315
316 config PWM_TIPWMSS
317 bool
318 default y if SOC_AM33XX && (PWM_TIECAP || PWM_TIEHRPWM)
319 help
320 PWM Subsystem driver support for AM33xx SOC.
321
322 PWM submodules require PWM config space access from submodule
323 drivers and require common parent driver support.
324
325 config PWM_TWL
326 tristate "TWL4030/6030 PWM support"
327 depends on TWL4030_CORE
328 help
329 Generic PWM framework driver for TWL4030/6030.
330
331 To compile this driver as a module, choose M here: the module
332 will be called pwm-twl.
333
334 config PWM_TWL_LED
335 tristate "TWL4030/6030 PWM support for LED drivers"
336 depends on TWL4030_CORE
337 help
338 Generic PWM framework driver for TWL4030/6030 LED terminals.
339
340 To compile this driver as a module, choose M here: the module
341 will be called pwm-twl-led.
342
343 config PWM_VT8500
344 tristate "vt8500 PWM support"
345 depends on ARCH_VT8500
346 help
347 Generic PWM framework driver for vt8500.
348
349 To compile this driver as a module, choose M here: the module
350 will be called pwm-vt8500.
351
352 endif
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