xref: /openbmc/linux/drivers/pwm/Kconfig (revision 56bbd862)
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_IPROC
78	tristate "iProc PWM support"
79	depends on ARCH_BCM_IPROC
80	help
81	  Generic PWM framework driver for Broadcom iProc PWM block. This
82	  block is used in Broadcom iProc SoC's.
83
84	  To compile this driver as a module, choose M here: the module
85	  will be called pwm-bcm-iproc.
86
87config PWM_BCM_KONA
88	tristate "Kona PWM support"
89	depends on ARCH_BCM_MOBILE
90	help
91	  Generic PWM framework driver for Broadcom Kona PWM block.
92
93	  To compile this driver as a module, choose M here: the module
94	  will be called pwm-bcm-kona.
95
96config PWM_BCM2835
97	tristate "BCM2835 PWM support"
98	depends on ARCH_BCM2835
99	help
100	  PWM framework driver for BCM2835 controller (Raspberry Pi)
101
102	  To compile this driver as a module, choose M here: the module
103	  will be called pwm-bcm2835.
104
105config PWM_BERLIN
106	tristate "Marvell Berlin PWM support"
107	depends on ARCH_BERLIN
108	help
109	  PWM framework driver for Marvell Berlin SoCs.
110
111	  To compile this driver as a module, choose M here: the module
112	  will be called pwm-berlin.
113
114config PWM_BFIN
115	tristate "Blackfin PWM support"
116	depends on BFIN_GPTIMERS
117	help
118	  Generic PWM framework driver for Blackfin.
119
120	  To compile this driver as a module, choose M here: the module
121	  will be called pwm-bfin.
122
123config PWM_BRCMSTB
124	tristate "Broadcom STB PWM support"
125	depends on ARCH_BRCMSTB || BMIPS_GENERIC
126	help
127	  Generic PWM framework driver for the Broadcom Set-top-Box
128	  SoCs (BCM7xxx).
129
130	  To compile this driver as a module, choose M Here: the module
131	  will be called pwm-brcmstb.c.
132
133config PWM_CLPS711X
134	tristate "CLPS711X PWM support"
135	depends on ARCH_CLPS711X || COMPILE_TEST
136	depends on HAS_IOMEM
137	help
138	  Generic PWM framework driver for Cirrus Logic CLPS711X.
139
140	  To compile this driver as a module, choose M here: the module
141	  will be called pwm-clps711x.
142
143config PWM_CRC
144	bool "Intel Crystalcove (CRC) PWM support"
145	depends on X86 && INTEL_SOC_PMIC
146	help
147	  Generic PWM framework driver for Crystalcove (CRC) PMIC based PWM
148	  control.
149
150config PWM_CROS_EC
151	tristate "ChromeOS EC PWM driver"
152	depends on MFD_CROS_EC
153	help
154	  PWM driver for exposing a PWM attached to the ChromeOS Embedded
155	  Controller.
156
157config PWM_EP93XX
158	tristate "Cirrus Logic EP93xx PWM support"
159	depends on ARCH_EP93XX
160	help
161	  Generic PWM framework driver for Cirrus Logic EP93xx.
162
163	  To compile this driver as a module, choose M here: the module
164	  will be called pwm-ep93xx.
165
166config PWM_FSL_FTM
167	tristate "Freescale FlexTimer Module (FTM) PWM support"
168	depends on HAS_IOMEM
169	depends on OF
170	select REGMAP_MMIO
171	help
172	  Generic FTM PWM framework driver for Freescale VF610 and
173	  Layerscape LS-1 SoCs.
174
175	  To compile this driver as a module, choose M here: the module
176	  will be called pwm-fsl-ftm.
177
178config PWM_HIBVT
179	tristate "HiSilicon BVT PWM support"
180	depends on ARCH_HISI || COMPILE_TEST
181	help
182	  Generic PWM framework driver for HiSilicon BVT SoCs.
183
184	  To compile this driver as a module, choose M here: the module
185	  will be called pwm-hibvt.
186
187config PWM_IMG
188	tristate "Imagination Technologies PWM driver"
189	depends on HAS_IOMEM
190	depends on MFD_SYSCON
191	depends on COMMON_CLK
192	depends on MIPS || COMPILE_TEST
193	help
194	  Generic PWM framework driver for Imagination Technologies
195	  PWM block which supports 4 channels.
196
197	  To compile this driver as a module, choose M here: the module
198	  will be called pwm-img
199
200config PWM_IMX
201	tristate "i.MX PWM support"
202	depends on ARCH_MXC
203	help
204	  Generic PWM framework driver for i.MX.
205
206	  To compile this driver as a module, choose M here: the module
207	  will be called pwm-imx.
208
209config PWM_JZ4740
210	tristate "Ingenic JZ4740 PWM support"
211	depends on MACH_JZ4740
212	help
213	  Generic PWM framework driver for Ingenic JZ4740 based
214	  machines.
215
216	  To compile this driver as a module, choose M here: the module
217	  will be called pwm-jz4740.
218
219config PWM_LP3943
220	tristate "TI/National Semiconductor LP3943 PWM support"
221	depends on MFD_LP3943
222	help
223	  Generic PWM framework driver for LP3943 which supports two PWM
224	  channels.
225
226	  To compile this driver as a module, choose M here: the module
227	  will be called pwm-lp3943.
228
229config PWM_LPC18XX_SCT
230	tristate "LPC18xx/43xx PWM/SCT support"
231	depends on ARCH_LPC18XX
232	help
233	  Generic PWM framework driver for NXP LPC18xx PWM/SCT which
234	  supports 16 channels.
235	  A maximum of 15 channels can be requested simultaneously and
236	  must have the same period.
237
238	  To compile this driver as a module, choose M here: the module
239	  will be called pwm-lpc18xx-sct.
240
241config PWM_LPC32XX
242	tristate "LPC32XX PWM support"
243	depends on ARCH_LPC32XX
244	help
245	  Generic PWM framework driver for LPC32XX. The LPC32XX SOC has two
246	  PWM controllers.
247
248	  To compile this driver as a module, choose M here: the module
249	  will be called pwm-lpc32xx.
250
251config PWM_LPSS
252	tristate
253
254config PWM_LPSS_PCI
255	tristate "Intel LPSS PWM PCI driver"
256	depends on X86 && PCI
257	select PWM_LPSS
258	help
259	  The PCI driver for Intel Low Power Subsystem PWM controller.
260
261	  To compile this driver as a module, choose M here: the module
262	  will be called pwm-lpss-pci.
263
264config PWM_LPSS_PLATFORM
265	tristate "Intel LPSS PWM platform driver"
266	depends on X86 && ACPI
267	select PWM_LPSS
268	help
269	  The platform driver for Intel Low Power Subsystem PWM controller.
270
271	  To compile this driver as a module, choose M here: the module
272	  will be called pwm-lpss-platform.
273
274config PWM_MESON
275	tristate "Amlogic Meson PWM driver"
276	depends on ARCH_MESON
277	help
278	  The platform driver for Amlogic Meson PWM controller.
279
280	  To compile this driver as a module, choose M here: the module
281	  will be called pwm-meson.
282
283config PWM_MTK_DISP
284	tristate "MediaTek display PWM driver"
285	depends on ARCH_MEDIATEK || COMPILE_TEST
286	depends on HAS_IOMEM
287	help
288	  Generic PWM framework driver for MediaTek disp-pwm device.
289	  The PWM is used to control the backlight brightness for display.
290
291	  To compile this driver as a module, choose M here: the module
292	  will be called pwm-mtk-disp.
293
294config PWM_MXS
295	tristate "Freescale MXS PWM support"
296	depends on ARCH_MXS && OF
297	select STMP_DEVICE
298	help
299	  Generic PWM framework driver for Freescale MXS.
300
301	  To compile this driver as a module, choose M here: the module
302	  will be called pwm-mxs.
303
304config PWM_OMAP_DMTIMER
305	tristate "OMAP Dual-Mode Timer PWM support"
306	depends on OF && ARCH_OMAP && OMAP_DM_TIMER
307	help
308	  Generic PWM framework driver for OMAP Dual-Mode Timer PWM output
309
310	  To compile this driver as a module, choose M here: the module
311	  will be called pwm-omap-dmtimer
312
313config PWM_PCA9685
314	tristate "NXP PCA9685 PWM driver"
315	depends on I2C
316	select REGMAP_I2C
317	help
318	  Generic PWM framework driver for NXP PCA9685 LED controller.
319
320	  To compile this driver as a module, choose M here: the module
321	  will be called pwm-pca9685.
322
323config PWM_PUV3
324	tristate "PKUnity NetBook-0916 PWM support"
325	depends on ARCH_PUV3
326	help
327	  Generic PWM framework driver for PKUnity NetBook-0916.
328
329	  To compile this driver as a module, choose M here: the module
330	  will be called pwm-puv3.
331
332config PWM_PXA
333	tristate "PXA PWM support"
334	depends on ARCH_PXA
335	help
336	  Generic PWM framework driver for PXA.
337
338	  To compile this driver as a module, choose M here: the module
339	  will be called pwm-pxa.
340
341config PWM_RCAR
342	tristate "Renesas R-Car PWM support"
343	depends on ARCH_RENESAS || COMPILE_TEST
344	depends on HAS_IOMEM
345	help
346	  This driver exposes the PWM Timer controller found in Renesas
347	  R-Car chips through the PWM API.
348
349	  To compile this driver as a module, choose M here: the module
350	  will be called pwm-rcar.
351
352config PWM_RENESAS_TPU
353	tristate "Renesas TPU PWM support"
354	depends on ARCH_RENESAS || COMPILE_TEST
355	depends on HAS_IOMEM
356	help
357	  This driver exposes the Timer Pulse Unit (TPU) PWM controller found
358	  in Renesas chips through the PWM API.
359
360	  To compile this driver as a module, choose M here: the module
361	  will be called pwm-renesas-tpu.
362
363config PWM_ROCKCHIP
364	tristate "Rockchip PWM support"
365	depends on ARCH_ROCKCHIP
366	help
367	  Generic PWM framework driver for the PWM controller found on
368	  Rockchip SoCs.
369
370config PWM_SAMSUNG
371	tristate "Samsung PWM support"
372	depends on PLAT_SAMSUNG || ARCH_EXYNOS
373	help
374	  Generic PWM framework driver for Samsung.
375
376	  To compile this driver as a module, choose M here: the module
377	  will be called pwm-samsung.
378
379config PWM_SPEAR
380	tristate "STMicroelectronics SPEAr PWM support"
381	depends on PLAT_SPEAR
382	depends on OF
383	help
384	  Generic PWM framework driver for the PWM controller on ST
385	  SPEAr SoCs.
386
387	  To compile this driver as a module, choose M here: the module
388	  will be called pwm-spear.
389
390config PWM_STI
391	tristate "STiH4xx PWM support"
392	depends on ARCH_STI
393	depends on OF
394	help
395	  Generic PWM framework driver for STiH4xx SoCs.
396
397	  To compile this driver as a module, choose M here: the module
398	  will be called pwm-sti.
399
400config PWM_STMPE
401	bool "STMPE expander PWM export"
402	depends on MFD_STMPE
403	help
404	  This enables support for the PWMs found in the STMPE I/O
405	  expanders.
406
407config PWM_SUN4I
408	tristate "Allwinner PWM support"
409	depends on ARCH_SUNXI || COMPILE_TEST
410	depends on HAS_IOMEM && COMMON_CLK
411	help
412	  Generic PWM framework driver for Allwinner SoCs.
413
414	  To compile this driver as a module, choose M here: the module
415	  will be called pwm-sun4i.
416
417config PWM_TEGRA
418	tristate "NVIDIA Tegra PWM support"
419	depends on ARCH_TEGRA
420	help
421	  Generic PWM framework driver for the PWFM controller found on NVIDIA
422	  Tegra SoCs.
423
424	  To compile this driver as a module, choose M here: the module
425	  will be called pwm-tegra.
426
427config  PWM_TIECAP
428	tristate "ECAP PWM support"
429	depends on ARCH_OMAP2PLUS || ARCH_DAVINCI_DA8XX
430	help
431	  PWM driver support for the ECAP APWM controller found on AM33XX
432	  TI SOC
433
434	  To compile this driver as a module, choose M here: the module
435	  will be called pwm-tiecap.
436
437config  PWM_TIEHRPWM
438	tristate "EHRPWM PWM support"
439	depends on ARCH_OMAP2PLUS || ARCH_DAVINCI_DA8XX
440	help
441	  PWM driver support for the EHRPWM controller found on AM33XX
442	  TI SOC
443
444	  To compile this driver as a module, choose M here: the module
445	  will be called pwm-tiehrpwm.
446
447config  PWM_TIPWMSS
448	bool
449	default y if (ARCH_OMAP2PLUS) && (PWM_TIECAP || PWM_TIEHRPWM)
450	help
451	  PWM Subsystem driver support for AM33xx SOC.
452
453	  PWM submodules require PWM config space access from submodule
454	  drivers and require common parent driver support.
455
456config PWM_TWL
457	tristate "TWL4030/6030 PWM support"
458	depends on TWL4030_CORE
459	help
460	  Generic PWM framework driver for TWL4030/6030.
461
462	  To compile this driver as a module, choose M here: the module
463	  will be called pwm-twl.
464
465config PWM_TWL_LED
466	tristate "TWL4030/6030 PWM support for LED drivers"
467	depends on TWL4030_CORE
468	help
469	  Generic PWM framework driver for TWL4030/6030 LED terminals.
470
471	  To compile this driver as a module, choose M here: the module
472	  will be called pwm-twl-led.
473
474config PWM_VT8500
475	tristate "vt8500 PWM support"
476	depends on ARCH_VT8500
477	help
478	  Generic PWM framework driver for vt8500.
479
480	  To compile this driver as a module, choose M here: the module
481	  will be called pwm-vt8500.
482
483endif
484