xref: /openbmc/linux/drivers/pwm/Kconfig (revision c0e297dc) 
1menuconfig 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
29if PWM
30
31config PWM_SYSFS
32	bool
33	default y if SYSFS
34
35config 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
44config 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
53config PWM_ATMEL_HLCDC_PWM
54	tristate "Atmel HLCDC PWM support"
55	depends on MFD_ATMEL_HLCDC
56	depends on HAVE_CLK
57	help
58	  Generic PWM framework driver for the PWM output of the HLCDC
59	  (Atmel High-end LCD Controller). This PWM output is mainly used
60	  to control the LCD backlight.
61
62	  To compile this driver as a module, choose M here: the module
63	  will be called pwm-atmel-hlcdc.
64
65config PWM_ATMEL_TCB
66	tristate "Atmel TC Block PWM support"
67	depends on ATMEL_TCLIB && OF
68	help
69	  Generic PWM framework driver for Atmel Timer Counter Block.
70
71	  A Timer Counter Block provides 6 PWM devices grouped by 2.
72	  Devices in a given group must have the same period.
73
74	  To compile this driver as a module, choose M here: the module
75	  will be called pwm-atmel-tcb.
76
77config PWM_BCM_KONA
78	tristate "Kona PWM support"
79	depends on ARCH_BCM_MOBILE
80	help
81	  Generic PWM framework driver for Broadcom Kona PWM block.
82
83	  To compile this driver as a module, choose M here: the module
84	  will be called pwm-bcm-kona.
85
86config PWM_BCM2835
87	tristate "BCM2835 PWM support"
88	depends on ARCH_BCM2835
89	help
90	  PWM framework driver for BCM2835 controller (Raspberry Pi)
91
92	  To compile this driver as a module, choose M here: the module
93	  will be called pwm-bcm2835.
94
95config PWM_BFIN
96	tristate "Blackfin PWM support"
97	depends on BFIN_GPTIMERS
98	help
99	  Generic PWM framework driver for Blackfin.
100
101	  To compile this driver as a module, choose M here: the module
102	  will be called pwm-bfin.
103
104config PWM_CLPS711X
105	tristate "CLPS711X PWM support"
106	depends on ARCH_CLPS711X || COMPILE_TEST
107	depends on HAS_IOMEM
108	help
109	  Generic PWM framework driver for Cirrus Logic CLPS711X.
110
111	  To compile this driver as a module, choose M here: the module
112	  will be called pwm-clps711x.
113
114config PWM_CRC
115	bool "Intel Crystalcove (CRC) PWM support"
116	depends on X86 && INTEL_SOC_PMIC
117	help
118	  Generic PWM framework driver for Crystalcove (CRC) PMIC based PWM
119	  control.
120
121config PWM_EP93XX
122	tristate "Cirrus Logic EP93xx PWM support"
123	depends on ARCH_EP93XX
124	help
125	  Generic PWM framework driver for Cirrus Logic EP93xx.
126
127	  To compile this driver as a module, choose M here: the module
128	  will be called pwm-ep93xx.
129
130config PWM_FSL_FTM
131	tristate "Freescale FlexTimer Module (FTM) PWM support"
132	depends on OF
133	select REGMAP_MMIO
134	help
135	  Generic FTM PWM framework driver for Freescale VF610 and
136	  Layerscape LS-1 SoCs.
137
138	  To compile this driver as a module, choose M here: the module
139	  will be called pwm-fsl-ftm.
140
141config PWM_IMG
142	tristate "Imagination Technologies PWM driver"
143	depends on HAS_IOMEM
144	depends on MFD_SYSCON
145	depends on COMMON_CLK
146	depends on MIPS || COMPILE_TEST
147	help
148	  Generic PWM framework driver for Imagination Technologies
149	  PWM block which supports 4 channels.
150
151	  To compile this driver as a module, choose M here: the module
152	  will be called pwm-img
153
154config PWM_IMX
155	tristate "i.MX PWM support"
156	depends on ARCH_MXC
157	help
158	  Generic PWM framework driver for i.MX.
159
160	  To compile this driver as a module, choose M here: the module
161	  will be called pwm-imx.
162
163config PWM_JZ4740
164	tristate "Ingenic JZ4740 PWM support"
165	depends on MACH_JZ4740
166	help
167	  Generic PWM framework driver for Ingenic JZ4740 based
168	  machines.
169
170	  To compile this driver as a module, choose M here: the module
171	  will be called pwm-jz4740.
172
173config PWM_LP3943
174	tristate "TI/National Semiconductor LP3943 PWM support"
175	depends on MFD_LP3943
176	help
177	  Generic PWM framework driver for LP3943 which supports two PWM
178	  channels.
179
180	  To compile this driver as a module, choose M here: the module
181	  will be called pwm-lp3943.
182
183config PWM_LPC32XX
184	tristate "LPC32XX PWM support"
185	depends on ARCH_LPC32XX
186	help
187	  Generic PWM framework driver for LPC32XX. The LPC32XX SOC has two
188	  PWM controllers.
189
190	  To compile this driver as a module, choose M here: the module
191	  will be called pwm-lpc32xx.
192
193config PWM_LPSS
194	tristate "Intel LPSS PWM support"
195	depends on X86
196	help
197	  Generic PWM framework driver for Intel Low Power Subsystem PWM
198	  controller.
199
200	  To compile this driver as a module, choose M here: the module
201	  will be called pwm-lpss.
202
203config PWM_LPSS_PCI
204	tristate "Intel LPSS PWM PCI driver"
205	depends on PWM_LPSS && PCI
206	help
207	  The PCI driver for Intel Low Power Subsystem PWM controller.
208
209	  To compile this driver as a module, choose M here: the module
210	  will be called pwm-lpss-pci.
211
212config PWM_LPSS_PLATFORM
213	tristate "Intel LPSS PWM platform driver"
214	depends on PWM_LPSS && ACPI
215	help
216	  The platform driver for Intel Low Power Subsystem PWM controller.
217
218	  To compile this driver as a module, choose M here: the module
219	  will be called pwm-lpss-platform.
220
221config PWM_MXS
222	tristate "Freescale MXS PWM support"
223	depends on ARCH_MXS && OF
224	select STMP_DEVICE
225	help
226	  Generic PWM framework driver for Freescale MXS.
227
228	  To compile this driver as a module, choose M here: the module
229	  will be called pwm-mxs.
230
231config PWM_PCA9685
232	tristate "NXP PCA9685 PWM driver"
233	depends on OF && I2C
234	select REGMAP_I2C
235	help
236	  Generic PWM framework driver for NXP PCA9685 LED controller.
237
238	  To compile this driver as a module, choose M here: the module
239	  will be called pwm-pca9685.
240
241config PWM_PUV3
242	tristate "PKUnity NetBook-0916 PWM support"
243	depends on ARCH_PUV3
244	help
245	  Generic PWM framework driver for PKUnity NetBook-0916.
246
247	  To compile this driver as a module, choose M here: the module
248	  will be called pwm-puv3.
249
250config PWM_PXA
251	tristate "PXA PWM support"
252	depends on ARCH_PXA
253	help
254	  Generic PWM framework driver for PXA.
255
256	  To compile this driver as a module, choose M here: the module
257	  will be called pwm-pxa.
258
259config PWM_RENESAS_TPU
260	tristate "Renesas TPU PWM support"
261	depends on ARCH_SHMOBILE || COMPILE_TEST
262	depends on HAS_IOMEM
263	help
264	  This driver exposes the Timer Pulse Unit (TPU) PWM controller found
265	  in Renesas chips through the PWM API.
266
267	  To compile this driver as a module, choose M here: the module
268	  will be called pwm-renesas-tpu.
269
270config PWM_ROCKCHIP
271	tristate "Rockchip PWM support"
272	depends on ARCH_ROCKCHIP
273	help
274	  Generic PWM framework driver for the PWM controller found on
275	  Rockchip SoCs.
276
277config PWM_SAMSUNG
278	tristate "Samsung PWM support"
279	depends on PLAT_SAMSUNG || ARCH_EXYNOS
280	help
281	  Generic PWM framework driver for Samsung.
282
283	  To compile this driver as a module, choose M here: the module
284	  will be called pwm-samsung.
285
286config PWM_SPEAR
287	tristate "STMicroelectronics SPEAr PWM support"
288	depends on PLAT_SPEAR
289	depends on OF
290	help
291	  Generic PWM framework driver for the PWM controller on ST
292	  SPEAr SoCs.
293
294	  To compile this driver as a module, choose M here: the module
295	  will be called pwm-spear.
296
297config PWM_STI
298	tristate "STiH4xx PWM support"
299	depends on ARCH_STI
300	depends on OF
301	help
302	  Generic PWM framework driver for STiH4xx SoCs.
303
304	  To compile this driver as a module, choose M here: the module
305	  will be called pwm-sti.
306
307config PWM_SUN4I
308	tristate "Allwinner PWM support"
309	depends on ARCH_SUNXI || COMPILE_TEST
310	depends on HAS_IOMEM && COMMON_CLK
311	help
312	  Generic PWM framework driver for Allwinner SoCs.
313
314	  To compile this driver as a module, choose M here: the module
315	  will be called pwm-sun4i.
316
317config PWM_TEGRA
318	tristate "NVIDIA Tegra PWM support"
319	depends on ARCH_TEGRA
320	help
321	  Generic PWM framework driver for the PWFM controller found on NVIDIA
322	  Tegra SoCs.
323
324	  To compile this driver as a module, choose M here: the module
325	  will be called pwm-tegra.
326
327config  PWM_TIECAP
328	tristate "ECAP PWM support"
329	depends on SOC_AM33XX || ARCH_DAVINCI_DA8XX
330	help
331	  PWM driver support for the ECAP APWM controller found on AM33XX
332	  TI SOC
333
334	  To compile this driver as a module, choose M here: the module
335	  will be called pwm-tiecap.
336
337config  PWM_TIEHRPWM
338	tristate "EHRPWM PWM support"
339	depends on SOC_AM33XX || ARCH_DAVINCI_DA8XX
340	help
341	  PWM driver support for the EHRPWM controller found on AM33XX
342	  TI SOC
343
344	  To compile this driver as a module, choose M here: the module
345	  will be called pwm-tiehrpwm.
346
347config  PWM_TIPWMSS
348	bool
349	default y if SOC_AM33XX && (PWM_TIECAP || PWM_TIEHRPWM)
350	help
351	  PWM Subsystem driver support for AM33xx SOC.
352
353	  PWM submodules require PWM config space access from submodule
354	  drivers and require common parent driver support.
355
356config PWM_TWL
357	tristate "TWL4030/6030 PWM support"
358	depends on TWL4030_CORE
359	help
360	  Generic PWM framework driver for TWL4030/6030.
361
362	  To compile this driver as a module, choose M here: the module
363	  will be called pwm-twl.
364
365config PWM_TWL_LED
366	tristate "TWL4030/6030 PWM support for LED drivers"
367	depends on TWL4030_CORE
368	help
369	  Generic PWM framework driver for TWL4030/6030 LED terminals.
370
371	  To compile this driver as a module, choose M here: the module
372	  will be called pwm-twl-led.
373
374config PWM_VT8500
375	tristate "vt8500 PWM support"
376	depends on ARCH_VT8500
377	help
378	  Generic PWM framework driver for vt8500.
379
380	  To compile this driver as a module, choose M here: the module
381	  will be called pwm-vt8500.
382
383endif
384