1# SPDX-License-Identifier: GPL-2.0-only
2menuconfig PWM
3	bool "Pulse-Width Modulation (PWM) Support"
4	help
5	  Generic Pulse-Width Modulation (PWM) support.
6
7	  In Pulse-Width Modulation, a variation of the width of pulses
8	  in a rectangular pulse signal is used as a means to alter the
9	  average power of the signal. Applications include efficient
10	  power delivery and voltage regulation. In computer systems,
11	  PWMs are commonly used to control fans or the brightness of
12	  display backlights.
13
14	  This framework provides a generic interface to PWM devices
15	  within the Linux kernel. On the driver side it provides an API
16	  to register and unregister a PWM chip, an abstraction of a PWM
17	  controller, that supports one or more PWM devices. Client
18	  drivers can request PWM devices and use the generic framework
19	  to configure as well as enable and disable them.
20
21	  This generic framework replaces the legacy PWM framework which
22	  allows only a single driver implementing the required API. Not
23	  all legacy implementations have been ported to the framework
24	  yet. The framework provides an API that is backward compatible
25	  with the legacy framework so that existing client drivers
26	  continue to work as expected.
27
28	  If unsure, say no.
29
30if PWM
31
32config PWM_SYSFS
33	bool
34	default y if SYSFS
35
36config PWM_DEBUG
37	bool "PWM lowlevel drivers additional checks and debug messages"
38	depends on DEBUG_KERNEL
39	help
40	  This option enables some additional checks to help lowlevel driver
41	  authors to get their callbacks implemented correctly.
42	  It is expected to introduce some runtime overhead and diagnostic
43	  output to the kernel log, so only enable while working on a driver.
44
45config PWM_AB8500
46	tristate "AB8500 PWM support"
47	depends on AB8500_CORE && ARCH_U8500
48	help
49	  Generic PWM framework driver for Analog Baseband AB8500.
50
51	  To compile this driver as a module, choose M here: the module
52	  will be called pwm-ab8500.
53
54config PWM_ATMEL
55	tristate "Atmel PWM support"
56	depends on OF
57	depends on ARCH_AT91 || COMPILE_TEST
58	help
59	  Generic PWM framework driver for Atmel SoC.
60
61	  To compile this driver as a module, choose M here: the module
62	  will be called pwm-atmel.
63
64config PWM_ATMEL_HLCDC_PWM
65	tristate "Atmel HLCDC PWM support"
66	depends on MFD_ATMEL_HLCDC
67	depends on HAVE_CLK
68	help
69	  Generic PWM framework driver for the PWM output of the HLCDC
70	  (Atmel High-end LCD Controller). This PWM output is mainly used
71	  to control the LCD backlight.
72
73	  To compile this driver as a module, choose M here: the module
74	  will be called pwm-atmel-hlcdc.
75
76config PWM_ATMEL_TCB
77	tristate "Atmel TC Block PWM support"
78	depends on ATMEL_TCLIB && OF
79	help
80	  Generic PWM framework driver for Atmel Timer Counter Block.
81
82	  A Timer Counter Block provides 6 PWM devices grouped by 2.
83	  Devices in a given group must have the same period.
84
85	  To compile this driver as a module, choose M here: the module
86	  will be called pwm-atmel-tcb.
87
88config PWM_BCM_IPROC
89	tristate "iProc PWM support"
90	depends on ARCH_BCM_IPROC || COMPILE_TEST
91	depends on COMMON_CLK
92	default ARCH_BCM_IPROC
93	help
94	  Generic PWM framework driver for Broadcom iProc PWM block. This
95	  block is used in Broadcom iProc SoC's.
96
97	  To compile this driver as a module, choose M here: the module
98	  will be called pwm-bcm-iproc.
99
100config PWM_BCM_KONA
101	tristate "Kona PWM support"
102	depends on ARCH_BCM_MOBILE || ARCH_BCM_CYGNUS || COMPILE_TEST
103	depends on HAVE_CLK && HAS_IOMEM
104	default ARCH_BCM_MOBILE || ARCH_BCM_CYGNUS
105	help
106	  Generic PWM framework driver for Broadcom Kona PWM block.
107
108	  To compile this driver as a module, choose M here: the module
109	  will be called pwm-bcm-kona.
110
111config PWM_BCM2835
112	tristate "BCM2835 PWM support"
113	depends on ARCH_BCM2835 || ARCH_BRCMSTB || COMPILE_TEST
114	help
115	  PWM framework driver for BCM2835 controller (Raspberry Pi)
116
117	  To compile this driver as a module, choose M here: the module
118	  will be called pwm-bcm2835.
119
120config PWM_BERLIN
121	tristate "Marvell Berlin PWM support"
122	depends on ARCH_BERLIN || COMPILE_TEST
123	help
124	  PWM framework driver for Marvell Berlin SoCs.
125
126	  To compile this driver as a module, choose M here: the module
127	  will be called pwm-berlin.
128
129config PWM_BRCMSTB
130	tristate "Broadcom STB PWM support"
131	depends on ARCH_BRCMSTB || BMIPS_GENERIC || COMPILE_TEST
132	help
133	  Generic PWM framework driver for the Broadcom Set-top-Box
134	  SoCs (BCM7xxx).
135
136	  To compile this driver as a module, choose M Here: the module
137	  will be called pwm-brcmstb.c.
138
139config PWM_CLPS711X
140	tristate "CLPS711X PWM support"
141	depends on ARCH_CLPS711X || COMPILE_TEST
142	depends on HAS_IOMEM
143	help
144	  Generic PWM framework driver for Cirrus Logic CLPS711X.
145
146	  To compile this driver as a module, choose M here: the module
147	  will be called pwm-clps711x.
148
149config PWM_CRC
150	bool "Intel Crystalcove (CRC) PWM support"
151	depends on X86 && INTEL_SOC_PMIC
152	help
153	  Generic PWM framework driver for Crystalcove (CRC) PMIC based PWM
154	  control.
155
156config PWM_CROS_EC
157	tristate "ChromeOS EC PWM driver"
158	depends on CROS_EC
159	help
160	  PWM driver for exposing a PWM attached to the ChromeOS Embedded
161	  Controller.
162
163config PWM_EP93XX
164	tristate "Cirrus Logic EP93xx PWM support"
165	depends on ARCH_EP93XX || COMPILE_TEST
166	help
167	  Generic PWM framework driver for Cirrus Logic EP93xx.
168
169	  To compile this driver as a module, choose M here: the module
170	  will be called pwm-ep93xx.
171
172config PWM_FSL_FTM
173	tristate "Freescale FlexTimer Module (FTM) PWM support"
174	depends on HAS_IOMEM
175	depends on OF
176	select REGMAP_MMIO
177	help
178	  Generic FTM PWM framework driver for Freescale VF610 and
179	  Layerscape LS-1 SoCs.
180
181	  To compile this driver as a module, choose M here: the module
182	  will be called pwm-fsl-ftm.
183
184config PWM_HIBVT
185	tristate "HiSilicon BVT PWM support"
186	depends on ARCH_HISI || COMPILE_TEST
187	help
188	  Generic PWM framework driver for HiSilicon BVT SoCs.
189
190	  To compile this driver as a module, choose M here: the module
191	  will be called pwm-hibvt.
192
193config PWM_IMG
194	tristate "Imagination Technologies PWM driver"
195	depends on HAS_IOMEM
196	depends on MFD_SYSCON
197	depends on COMMON_CLK
198	depends on MIPS || COMPILE_TEST
199	help
200	  Generic PWM framework driver for Imagination Technologies
201	  PWM block which supports 4 channels.
202
203	  To compile this driver as a module, choose M here: the module
204	  will be called pwm-img
205
206config PWM_IMX1
207	tristate "i.MX1 PWM support"
208	depends on ARCH_MXC || COMPILE_TEST
209	help
210	  Generic PWM framework driver for i.MX1 and i.MX21
211
212	  To compile this driver as a module, choose M here: the module
213	  will be called pwm-imx1.
214
215config PWM_IMX27
216	tristate "i.MX27 PWM support"
217	depends on ARCH_MXC || COMPILE_TEST
218	help
219	  Generic PWM framework driver for i.MX27 and later i.MX SoCs.
220
221	  To compile this driver as a module, choose M here: the module
222	  will be called pwm-imx27.
223
224config PWM_IMX_TPM
225	tristate "i.MX TPM PWM support"
226	depends on ARCH_MXC || COMPILE_TEST
227	depends on HAVE_CLK && HAS_IOMEM
228	help
229	  Generic PWM framework driver for i.MX7ULP TPM module, TPM's full
230	  name is Low Power Timer/Pulse Width Modulation Module.
231
232	  To compile this driver as a module, choose M here: the module
233	  will be called pwm-imx-tpm.
234
235config PWM_IQS620A
236	tristate "Azoteq IQS620A PWM support"
237	depends on MFD_IQS62X || COMPILE_TEST
238	help
239	  Generic PWM framework driver for the Azoteq IQS620A multi-function
240	  sensor.
241
242	  To compile this driver as a module, choose M here: the module will
243	  be called pwm-iqs620a.
244
245config PWM_JZ4740
246	tristate "Ingenic JZ47xx PWM support"
247	depends on MIPS
248	depends on COMMON_CLK
249	select MFD_SYSCON
250	help
251	  Generic PWM framework driver for Ingenic JZ47xx based
252	  machines.
253
254	  To compile this driver as a module, choose M here: the module
255	  will be called pwm-jz4740.
256
257config PWM_LP3943
258	tristate "TI/National Semiconductor LP3943 PWM support"
259	depends on MFD_LP3943
260	help
261	  Generic PWM framework driver for LP3943 which supports two PWM
262	  channels.
263
264	  To compile this driver as a module, choose M here: the module
265	  will be called pwm-lp3943.
266
267config PWM_LPC18XX_SCT
268	tristate "LPC18xx/43xx PWM/SCT support"
269	depends on ARCH_LPC18XX || COMPILE_TEST
270	help
271	  Generic PWM framework driver for NXP LPC18xx PWM/SCT which
272	  supports 16 channels.
273	  A maximum of 15 channels can be requested simultaneously and
274	  must have the same period.
275
276	  To compile this driver as a module, choose M here: the module
277	  will be called pwm-lpc18xx-sct.
278
279config PWM_LPC32XX
280	tristate "LPC32XX PWM support"
281	depends on ARCH_LPC32XX || COMPILE_TEST
282	help
283	  Generic PWM framework driver for LPC32XX. The LPC32XX SOC has two
284	  PWM controllers.
285
286	  To compile this driver as a module, choose M here: the module
287	  will be called pwm-lpc32xx.
288
289config PWM_LPSS
290	tristate
291
292config PWM_LPSS_PCI
293	tristate "Intel LPSS PWM PCI driver"
294	depends on X86 && PCI
295	select PWM_LPSS
296	help
297	  The PCI driver for Intel Low Power Subsystem PWM controller.
298
299	  To compile this driver as a module, choose M here: the module
300	  will be called pwm-lpss-pci.
301
302config PWM_LPSS_PLATFORM
303	tristate "Intel LPSS PWM platform driver"
304	depends on X86 && ACPI
305	select PWM_LPSS
306	help
307	  The platform driver for Intel Low Power Subsystem PWM controller.
308
309	  To compile this driver as a module, choose M here: the module
310	  will be called pwm-lpss-platform.
311
312config PWM_MESON
313	tristate "Amlogic Meson PWM driver"
314	depends on ARCH_MESON || COMPILE_TEST
315	depends on COMMON_CLK
316	help
317	  The platform driver for Amlogic Meson PWM controller.
318
319	  To compile this driver as a module, choose M here: the module
320	  will be called pwm-meson.
321
322config PWM_MTK_DISP
323	tristate "MediaTek display PWM driver"
324	depends on ARCH_MEDIATEK || COMPILE_TEST
325	depends on HAS_IOMEM
326	help
327	  Generic PWM framework driver for MediaTek disp-pwm device.
328	  The PWM is used to control the backlight brightness for display.
329
330	  To compile this driver as a module, choose M here: the module
331	  will be called pwm-mtk-disp.
332
333config PWM_MEDIATEK
334	tristate "MediaTek PWM support"
335	depends on ARCH_MEDIATEK || RALINK || COMPILE_TEST
336	help
337	  Generic PWM framework driver for Mediatek ARM SoC.
338
339	  To compile this driver as a module, choose M here: the module
340	  will be called pwm-mediatek.
341
342config PWM_MXS
343	tristate "Freescale MXS PWM support"
344	depends on OF
345	depends on ARCH_MXS || COMPILE_TEST
346	select STMP_DEVICE
347	help
348	  Generic PWM framework driver for Freescale MXS.
349
350	  To compile this driver as a module, choose M here: the module
351	  will be called pwm-mxs.
352
353config PWM_OMAP_DMTIMER
354	tristate "OMAP Dual-Mode Timer PWM support"
355	depends on OF
356	depends on OMAP_DM_TIMER || COMPILE_TEST
357	help
358	  Generic PWM framework driver for OMAP Dual-Mode Timer PWM output
359
360	  To compile this driver as a module, choose M here: the module
361	  will be called pwm-omap-dmtimer
362
363config PWM_PCA9685
364	tristate "NXP PCA9685 PWM driver"
365	depends on I2C
366	select REGMAP_I2C
367	help
368	  Generic PWM framework driver for NXP PCA9685 LED controller.
369
370	  To compile this driver as a module, choose M here: the module
371	  will be called pwm-pca9685.
372
373config PWM_PXA
374	tristate "PXA PWM support"
375	depends on ARCH_PXA || COMPILE_TEST
376	help
377	  Generic PWM framework driver for PXA.
378
379	  To compile this driver as a module, choose M here: the module
380	  will be called pwm-pxa.
381
382config PWM_RCAR
383	tristate "Renesas R-Car PWM support"
384	depends on ARCH_RENESAS || COMPILE_TEST
385	depends on HAS_IOMEM
386	help
387	  This driver exposes the PWM Timer controller found in Renesas
388	  R-Car chips through the PWM API.
389
390	  To compile this driver as a module, choose M here: the module
391	  will be called pwm-rcar.
392
393config PWM_RENESAS_TPU
394	tristate "Renesas TPU PWM support"
395	depends on ARCH_RENESAS || COMPILE_TEST
396	depends on HAS_IOMEM
397	help
398	  This driver exposes the Timer Pulse Unit (TPU) PWM controller found
399	  in Renesas chips through the PWM API.
400
401	  To compile this driver as a module, choose M here: the module
402	  will be called pwm-renesas-tpu.
403
404config PWM_ROCKCHIP
405	tristate "Rockchip PWM support"
406	depends on ARCH_ROCKCHIP || COMPILE_TEST
407	help
408	  Generic PWM framework driver for the PWM controller found on
409	  Rockchip SoCs.
410
411config PWM_SAMSUNG
412	tristate "Samsung PWM support"
413	depends on PLAT_SAMSUNG || ARCH_S5PV210 || ARCH_EXYNOS || COMPILE_TEST
414	help
415	  Generic PWM framework driver for Samsung.
416
417	  To compile this driver as a module, choose M here: the module
418	  will be called pwm-samsung.
419
420config PWM_SIFIVE
421	tristate "SiFive PWM support"
422	depends on OF
423	depends on COMMON_CLK
424	depends on RISCV || COMPILE_TEST
425	help
426	  Generic PWM framework driver for SiFive SoCs.
427
428	  To compile this driver as a module, choose M here: the module
429	  will be called pwm-sifive.
430
431config PWM_SL28CPLD
432	tristate "Kontron sl28cpld PWM support"
433	depends on MFD_SL28CPLD || COMPILE_TEST
434	help
435	  Generic PWM framework driver for board management controller
436	  found on the Kontron sl28 CPLD.
437
438	  To compile this driver as a module, choose M here: the module
439	  will be called pwm-sl28cpld.
440
441config PWM_SPEAR
442	tristate "STMicroelectronics SPEAr PWM support"
443	depends on PLAT_SPEAR || COMPILE_TEST
444	depends on OF
445	help
446	  Generic PWM framework driver for the PWM controller on ST
447	  SPEAr SoCs.
448
449	  To compile this driver as a module, choose M here: the module
450	  will be called pwm-spear.
451
452config PWM_SPRD
453	tristate "Spreadtrum PWM support"
454	depends on ARCH_SPRD || COMPILE_TEST
455	depends on HAS_IOMEM
456	help
457	  Generic PWM framework driver for the PWM controller on
458	  Spreadtrum SoCs.
459
460	  To compile this driver as a module, choose M here: the module
461	  will be called pwm-sprd.
462
463config PWM_STI
464	tristate "STiH4xx PWM support"
465	depends on ARCH_STI || COMPILE_TEST
466	depends on OF
467	help
468	  Generic PWM framework driver for STiH4xx SoCs.
469
470	  To compile this driver as a module, choose M here: the module
471	  will be called pwm-sti.
472
473config PWM_STM32
474	tristate "STMicroelectronics STM32 PWM"
475	depends on MFD_STM32_TIMERS || COMPILE_TEST
476	help
477	  Generic PWM framework driver for STM32 SoCs.
478
479	  To compile this driver as a module, choose M here: the module
480	  will be called pwm-stm32.
481
482config PWM_STM32_LP
483	tristate "STMicroelectronics STM32 PWM LP"
484	depends on MFD_STM32_LPTIMER || COMPILE_TEST
485	help
486	  Generic PWM framework driver for STMicroelectronics STM32 SoCs
487	  with Low-Power Timer (LPTIM).
488
489	  To compile this driver as a module, choose M here: the module
490	  will be called pwm-stm32-lp.
491
492config PWM_STMPE
493	bool "STMPE expander PWM export"
494	depends on MFD_STMPE
495	help
496	  This enables support for the PWMs found in the STMPE I/O
497	  expanders.
498
499config PWM_SUN4I
500	tristate "Allwinner PWM support"
501	depends on ARCH_SUNXI || COMPILE_TEST
502	depends on HAS_IOMEM && COMMON_CLK
503	help
504	  Generic PWM framework driver for Allwinner SoCs.
505
506	  To compile this driver as a module, choose M here: the module
507	  will be called pwm-sun4i.
508
509config PWM_TEGRA
510	tristate "NVIDIA Tegra PWM support"
511	depends on ARCH_TEGRA || COMPILE_TEST
512	help
513	  Generic PWM framework driver for the PWFM controller found on NVIDIA
514	  Tegra SoCs.
515
516	  To compile this driver as a module, choose M here: the module
517	  will be called pwm-tegra.
518
519config PWM_TIECAP
520	tristate "ECAP PWM support"
521	depends on ARCH_OMAP2PLUS || ARCH_DAVINCI_DA8XX || ARCH_KEYSTONE || ARCH_K3 || COMPILE_TEST
522	help
523	  PWM driver support for the ECAP APWM controller found on TI SOCs
524
525	  To compile this driver as a module, choose M here: the module
526	  will be called pwm-tiecap.
527
528config PWM_TIEHRPWM
529	tristate "EHRPWM PWM support"
530	depends on ARCH_OMAP2PLUS || ARCH_DAVINCI_DA8XX || ARCH_K3 || COMPILE_TEST
531	help
532	  PWM driver support for the EHRPWM controller found on TI SOCs
533
534	  To compile this driver as a module, choose M here: the module
535	  will be called pwm-tiehrpwm.
536
537config PWM_TWL
538	tristate "TWL4030/6030 PWM support"
539	depends on TWL4030_CORE
540	help
541	  Generic PWM framework driver for TWL4030/6030.
542
543	  To compile this driver as a module, choose M here: the module
544	  will be called pwm-twl.
545
546config PWM_TWL_LED
547	tristate "TWL4030/6030 PWM support for LED drivers"
548	depends on TWL4030_CORE
549	help
550	  Generic PWM framework driver for TWL4030/6030 LED terminals.
551
552	  To compile this driver as a module, choose M here: the module
553	  will be called pwm-twl-led.
554
555config PWM_VT8500
556	tristate "vt8500 PWM support"
557	depends on ARCH_VT8500 || COMPILE_TEST
558	help
559	  Generic PWM framework driver for vt8500.
560
561	  To compile this driver as a module, choose M here: the module
562	  will be called pwm-vt8500.
563
564config PWM_ZX
565	tristate "ZTE ZX PWM support"
566	depends on ARCH_ZX || COMPILE_TEST
567	help
568	  Generic PWM framework driver for ZTE ZX family SoCs.
569
570	  To compile this driver as a module, choose M here: the module
571	  will be called pwm-zx.
572
573endif
574