Commit | Line | Data |
---|---|---|
0c2498f1 | 1 | menuconfig PWM |
b817bf5c | 2 | bool "Pulse-Width Modulation (PWM) Support" |
0c2498f1 | 3 | help |
b817bf5c | 4 | Generic Pulse-Width Modulation (PWM) support. |
0c2498f1 | 5 | |
b817bf5c TR |
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. | |
0c2498f1 SH |
28 | |
29 | if PWM | |
30 | ||
76abbdde HS |
31 | config PWM_SYSFS |
32 | bool | |
33 | default y if SYSFS | |
34 | ||
6173f8f4 TR |
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 | ||
32b16d46 BS |
44 | config PWM_ATMEL |
45 | tristate "Atmel PWM support" | |
bb4bbbaa | 46 | depends on ARCH_AT91 || AVR32 |
32b16d46 BS |
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 | ||
2b4984be BB |
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 | ||
9421bade | 64 | config PWM_ATMEL_TCB |
b133d2a1 | 65 | tristate "Atmel TC Block PWM support" |
9421bade BB |
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 | ||
6a4e4bff TK |
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 | ||
e5a06dc5 BT |
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 | ||
a4315e3c TR |
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 | ||
7eb3f6ff AS |
103 | config PWM_CLPS711X |
104 | tristate "CLPS711X PWM support" | |
105 | depends on ARCH_CLPS711X || COMPILE_TEST | |
dec02f98 | 106 | depends on HAS_IOMEM |
7eb3f6ff AS |
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 | ||
a2308698 HS |
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 | ||
b505183b XL |
122 | config PWM_FSL_FTM |
123 | tristate "Freescale FlexTimer Module (FTM) PWM support" | |
124 | depends on OF | |
00018a8a | 125 | select REGMAP_MMIO |
b505183b XL |
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 | ||
29693248 | 133 | config PWM_IMX |
b133d2a1 | 134 | tristate "i.MX PWM support" |
29693248 SH |
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 | ||
f6b8a570 TR |
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 | ||
af66b3c0 MK |
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 | ||
2132fa8d APS |
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 | ||
d16a5aa9 MW |
172 | config PWM_LPSS |
173 | tristate "Intel LPSS PWM support" | |
ad16202d | 174 | depends on X86 |
d16a5aa9 MW |
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 | ||
c558e39e AS |
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 | ||
4dce82c1 SG |
200 | config PWM_MXS |
201 | tristate "Freescale MXS PWM support" | |
202 | depends on ARCH_MXS && OF | |
01bf32e9 | 203 | select STMP_DEVICE |
4dce82c1 SG |
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 | ||
88b613e6 ST |
210 | config PWM_PCA9685 |
211 | tristate "NXP PCA9685 PWM driver" | |
2c80a492 AL |
212 | depends on OF && I2C |
213 | select REGMAP_I2C | |
88b613e6 ST |
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 | ||
79c11b6f TR |
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 | ||
17b2b478 TR |
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 | ||
99b82abb LP |
238 | config PWM_RENESAS_TPU |
239 | tristate "Renesas TPU PWM support" | |
94d88d63 | 240 | depends on ARCH_SHMOBILE || COMPILE_TEST |
2974b098 | 241 | depends on HAS_IOMEM |
99b82abb LP |
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 | ||
101353c8 BG |
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 | ||
215c29d3 | 256 | config PWM_SAMSUNG |
b133d2a1 | 257 | tristate "Samsung PWM support" |
06e4cb6b | 258 | depends on PLAT_SAMSUNG || ARCH_EXYNOS |
215c29d3 SH |
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 | ||
ce20364b SH |
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 | ||
378fe115 LJ |
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 | ||
0134b932 TR |
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 | ||
8e0cb05b PA |
296 | config PWM_TIECAP |
297 | tristate "ECAP PWM support" | |
1bf0f20b | 298 | depends on SOC_AM33XX || ARCH_DAVINCI_DA8XX |
8e0cb05b PA |
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 | ||
19891b20 PA |
306 | config PWM_TIEHRPWM |
307 | tristate "EHRPWM PWM support" | |
1bf0f20b | 308 | depends on SOC_AM33XX || ARCH_DAVINCI_DA8XX |
19891b20 PA |
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 | ||
af0ba001 PA |
316 | config PWM_TIPWMSS |
317 | bool | |
1bf0f20b | 318 | default y if SOC_AM33XX && (PWM_TIECAP || PWM_TIEHRPWM) |
af0ba001 PA |
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 | ||
3744c263 PU |
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 | ||
aa765647 PU |
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 | ||
a245cceb | 343 | config PWM_VT8500 |
b133d2a1 | 344 | tristate "vt8500 PWM support" |
a245cceb SH |
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 | ||
0c2498f1 | 352 | endif |