xref: /openbmc/linux/drivers/pwm/Kconfig (revision dfe94d40)
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 ARCH_AT91 || COMPILE_TEST
57	depends on HAS_IOMEM && OF
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 OF
79	select REGMAP_MMIO
80	help
81	  Generic PWM framework driver for Atmel Timer Counter Block.
82
83	  A Timer Counter Block provides 6 PWM devices grouped by 2.
84	  Devices in a given group must have the same period.
85
86	  To compile this driver as a module, choose M here: the module
87	  will be called pwm-atmel-tcb.
88
89config PWM_BCM_IPROC
90	tristate "iProc PWM support"
91	depends on ARCH_BCM_IPROC || COMPILE_TEST
92	depends on COMMON_CLK && HAS_IOMEM
93	default ARCH_BCM_IPROC
94	help
95	  Generic PWM framework driver for Broadcom iProc PWM block. This
96	  block is used in Broadcom iProc SoC's.
97
98	  To compile this driver as a module, choose M here: the module
99	  will be called pwm-bcm-iproc.
100
101config PWM_BCM_KONA
102	tristate "Kona PWM support"
103	depends on ARCH_BCM_MOBILE || ARCH_BCM_CYGNUS || COMPILE_TEST
104	depends on HAVE_CLK && HAS_IOMEM
105	default ARCH_BCM_MOBILE || ARCH_BCM_CYGNUS
106	help
107	  Generic PWM framework driver for Broadcom Kona PWM block.
108
109	  To compile this driver as a module, choose M here: the module
110	  will be called pwm-bcm-kona.
111
112config PWM_BCM2835
113	tristate "BCM2835 PWM support"
114	depends on ARCH_BCM2835 || ARCH_BRCMSTB || COMPILE_TEST
115	depends on HAS_IOMEM
116	help
117	  PWM framework driver for BCM2835 controller (Raspberry Pi)
118
119	  To compile this driver as a module, choose M here: the module
120	  will be called pwm-bcm2835.
121
122config PWM_BERLIN
123	tristate "Marvell Berlin PWM support"
124	depends on ARCH_BERLIN || COMPILE_TEST
125	depends on HAS_IOMEM
126	help
127	  PWM framework driver for Marvell Berlin SoCs.
128
129	  To compile this driver as a module, choose M here: the module
130	  will be called pwm-berlin.
131
132config PWM_BRCMSTB
133	tristate "Broadcom STB PWM support"
134	depends on ARCH_BRCMSTB || BMIPS_GENERIC || COMPILE_TEST
135	depends on HAS_IOMEM
136	help
137	  Generic PWM framework driver for the Broadcom Set-top-Box
138	  SoCs (BCM7xxx).
139
140	  To compile this driver as a module, choose M Here: the module
141	  will be called pwm-brcmstb.c.
142
143config PWM_CLPS711X
144	tristate "CLPS711X PWM support"
145	depends on ARCH_CLPS711X || COMPILE_TEST
146	depends on HAS_IOMEM
147	help
148	  Generic PWM framework driver for Cirrus Logic CLPS711X.
149
150	  To compile this driver as a module, choose M here: the module
151	  will be called pwm-clps711x.
152
153config PWM_CRC
154	bool "Intel Crystalcove (CRC) PWM support"
155	depends on X86 && INTEL_SOC_PMIC
156	help
157	  Generic PWM framework driver for Crystalcove (CRC) PMIC based PWM
158	  control.
159
160config PWM_CROS_EC
161	tristate "ChromeOS EC PWM driver"
162	depends on CROS_EC
163	help
164	  PWM driver for exposing a PWM attached to the ChromeOS Embedded
165	  Controller.
166
167config PWM_DWC
168	tristate "DesignWare PWM Controller"
169	depends on PCI
170	help
171	  PWM driver for Synopsys DWC PWM Controller attached to a PCI bus.
172
173	  To compile this driver as a module, choose M here: the module
174	  will be called pwm-dwc.
175
176config PWM_EP93XX
177	tristate "Cirrus Logic EP93xx PWM support"
178	depends on ARCH_EP93XX || COMPILE_TEST
179	depends on HAS_IOMEM
180	help
181	  Generic PWM framework driver for Cirrus Logic EP93xx.
182
183	  To compile this driver as a module, choose M here: the module
184	  will be called pwm-ep93xx.
185
186config PWM_FSL_FTM
187	tristate "Freescale FlexTimer Module (FTM) PWM support"
188	depends on HAS_IOMEM
189	depends on OF
190	select REGMAP_MMIO
191	help
192	  Generic FTM PWM framework driver for Freescale VF610 and
193	  Layerscape LS-1 SoCs.
194
195	  To compile this driver as a module, choose M here: the module
196	  will be called pwm-fsl-ftm.
197
198config PWM_HIBVT
199	tristate "HiSilicon BVT PWM support"
200	depends on ARCH_HISI || COMPILE_TEST
201	depends on HAS_IOMEM
202	help
203	  Generic PWM framework driver for HiSilicon BVT SoCs.
204
205	  To compile this driver as a module, choose M here: the module
206	  will be called pwm-hibvt.
207
208config PWM_IMG
209	tristate "Imagination Technologies PWM driver"
210	depends on HAS_IOMEM
211	depends on MFD_SYSCON
212	depends on COMMON_CLK
213	depends on MIPS || COMPILE_TEST
214	help
215	  Generic PWM framework driver for Imagination Technologies
216	  PWM block which supports 4 channels.
217
218	  To compile this driver as a module, choose M here: the module
219	  will be called pwm-img
220
221config PWM_IMX1
222	tristate "i.MX1 PWM support"
223	depends on ARCH_MXC || COMPILE_TEST
224	depends on HAS_IOMEM
225	help
226	  Generic PWM framework driver for i.MX1 and i.MX21
227
228	  To compile this driver as a module, choose M here: the module
229	  will be called pwm-imx1.
230
231config PWM_IMX27
232	tristate "i.MX27 PWM support"
233	depends on ARCH_MXC || COMPILE_TEST
234	depends on HAS_IOMEM
235	help
236	  Generic PWM framework driver for i.MX27 and later i.MX SoCs.
237
238	  To compile this driver as a module, choose M here: the module
239	  will be called pwm-imx27.
240
241config PWM_IMX_TPM
242	tristate "i.MX TPM PWM support"
243	depends on ARCH_MXC || COMPILE_TEST
244	depends on HAVE_CLK && HAS_IOMEM
245	help
246	  Generic PWM framework driver for i.MX7ULP TPM module, TPM's full
247	  name is Low Power Timer/Pulse Width Modulation Module.
248
249	  To compile this driver as a module, choose M here: the module
250	  will be called pwm-imx-tpm.
251
252config PWM_INTEL_LGM
253	tristate "Intel LGM PWM support"
254	depends on HAS_IOMEM
255	depends on (OF && X86) || COMPILE_TEST
256	select REGMAP_MMIO
257	help
258	  Generic PWM fan controller driver for LGM SoC.
259
260	  To compile this driver as a module, choose M here: the module
261	  will be called pwm-intel-lgm.
262
263config PWM_IQS620A
264	tristate "Azoteq IQS620A PWM support"
265	depends on MFD_IQS62X || COMPILE_TEST
266	help
267	  Generic PWM framework driver for the Azoteq IQS620A multi-function
268	  sensor.
269
270	  To compile this driver as a module, choose M here: the module will
271	  be called pwm-iqs620a.
272
273config PWM_JZ4740
274	tristate "Ingenic JZ47xx PWM support"
275	depends on MIPS
276	depends on COMMON_CLK
277	select MFD_SYSCON
278	help
279	  Generic PWM framework driver for Ingenic JZ47xx based
280	  machines.
281
282	  To compile this driver as a module, choose M here: the module
283	  will be called pwm-jz4740.
284
285config PWM_KEEMBAY
286	tristate "Intel Keem Bay PWM driver"
287	depends on ARCH_KEEMBAY || (ARM64 && COMPILE_TEST)
288	help
289	  The platform driver for Intel Keem Bay PWM controller.
290
291	  To compile this driver as a module, choose M here: the module
292	  will be called pwm-keembay.
293
294config PWM_LP3943
295	tristate "TI/National Semiconductor LP3943 PWM support"
296	depends on MFD_LP3943
297	help
298	  Generic PWM framework driver for LP3943 which supports two PWM
299	  channels.
300
301	  To compile this driver as a module, choose M here: the module
302	  will be called pwm-lp3943.
303
304config PWM_LPC18XX_SCT
305	tristate "LPC18xx/43xx PWM/SCT support"
306	depends on ARCH_LPC18XX || COMPILE_TEST
307	depends on HAS_IOMEM
308	help
309	  Generic PWM framework driver for NXP LPC18xx PWM/SCT which
310	  supports 16 channels.
311	  A maximum of 15 channels can be requested simultaneously and
312	  must have the same period.
313
314	  To compile this driver as a module, choose M here: the module
315	  will be called pwm-lpc18xx-sct.
316
317config PWM_LPC32XX
318	tristate "LPC32XX PWM support"
319	depends on ARCH_LPC32XX || COMPILE_TEST
320	depends on HAS_IOMEM
321	help
322	  Generic PWM framework driver for LPC32XX. The LPC32XX SOC has two
323	  PWM controllers.
324
325	  To compile this driver as a module, choose M here: the module
326	  will be called pwm-lpc32xx.
327
328config PWM_LPSS
329	depends on HAS_IOMEM
330	tristate
331
332config PWM_LPSS_PCI
333	tristate "Intel LPSS PWM PCI driver"
334	depends on X86 || COMPILE_TEST
335	depends on HAS_IOMEM && PCI
336	select PWM_LPSS
337	help
338	  The PCI driver for Intel Low Power Subsystem PWM controller.
339
340	  To compile this driver as a module, choose M here: the module
341	  will be called pwm-lpss-pci.
342
343config PWM_LPSS_PLATFORM
344	tristate "Intel LPSS PWM platform driver"
345	depends on (X86 && ACPI) || COMPILE_TEST
346	depends on HAS_IOMEM
347	select PWM_LPSS
348	help
349	  The platform driver for Intel Low Power Subsystem PWM controller.
350
351	  To compile this driver as a module, choose M here: the module
352	  will be called pwm-lpss-platform.
353
354config PWM_MESON
355	tristate "Amlogic Meson PWM driver"
356	depends on ARCH_MESON || COMPILE_TEST
357	depends on COMMON_CLK && HAS_IOMEM
358	help
359	  The platform driver for Amlogic Meson PWM controller.
360
361	  To compile this driver as a module, choose M here: the module
362	  will be called pwm-meson.
363
364config PWM_MTK_DISP
365	tristate "MediaTek display PWM driver"
366	depends on ARCH_MEDIATEK || COMPILE_TEST
367	depends on HAS_IOMEM
368	help
369	  Generic PWM framework driver for MediaTek disp-pwm device.
370	  The PWM is used to control the backlight brightness for display.
371
372	  To compile this driver as a module, choose M here: the module
373	  will be called pwm-mtk-disp.
374
375config PWM_MEDIATEK
376	tristate "MediaTek PWM support"
377	depends on ARCH_MEDIATEK || RALINK || COMPILE_TEST
378	depends on HAS_IOMEM
379	help
380	  Generic PWM framework driver for Mediatek ARM SoC.
381
382	  To compile this driver as a module, choose M here: the module
383	  will be called pwm-mediatek.
384
385config PWM_MXS
386	tristate "Freescale MXS PWM support"
387	depends on ARCH_MXS || COMPILE_TEST
388	depends on HAS_IOMEM && OF
389	select STMP_DEVICE
390	help
391	  Generic PWM framework driver for Freescale MXS.
392
393	  To compile this driver as a module, choose M here: the module
394	  will be called pwm-mxs.
395
396config PWM_OMAP_DMTIMER
397	tristate "OMAP Dual-Mode Timer PWM support"
398	depends on OF
399	depends on OMAP_DM_TIMER || COMPILE_TEST
400	help
401	  Generic PWM framework driver for OMAP Dual-Mode Timer PWM output
402
403	  To compile this driver as a module, choose M here: the module
404	  will be called pwm-omap-dmtimer
405
406config PWM_PCA9685
407	tristate "NXP PCA9685 PWM driver"
408	depends on I2C
409	select REGMAP_I2C
410	help
411	  Generic PWM framework driver for NXP PCA9685 LED controller.
412
413	  To compile this driver as a module, choose M here: the module
414	  will be called pwm-pca9685.
415
416config PWM_PXA
417	tristate "PXA PWM support"
418	depends on ARCH_PXA || COMPILE_TEST
419	depends on HAS_IOMEM
420	help
421	  Generic PWM framework driver for PXA.
422
423	  To compile this driver as a module, choose M here: the module
424	  will be called pwm-pxa.
425
426config PWM_RCAR
427	tristate "Renesas R-Car PWM support"
428	depends on ARCH_RENESAS || COMPILE_TEST
429	depends on HAS_IOMEM
430	help
431	  This driver exposes the PWM Timer controller found in Renesas
432	  R-Car chips through the PWM API.
433
434	  To compile this driver as a module, choose M here: the module
435	  will be called pwm-rcar.
436
437config PWM_RENESAS_TPU
438	tristate "Renesas TPU PWM support"
439	depends on ARCH_RENESAS || COMPILE_TEST
440	depends on HAS_IOMEM
441	help
442	  This driver exposes the Timer Pulse Unit (TPU) PWM controller found
443	  in Renesas chips through the PWM API.
444
445	  To compile this driver as a module, choose M here: the module
446	  will be called pwm-renesas-tpu.
447
448config PWM_ROCKCHIP
449	tristate "Rockchip PWM support"
450	depends on ARCH_ROCKCHIP || COMPILE_TEST
451	depends on HAS_IOMEM
452	help
453	  Generic PWM framework driver for the PWM controller found on
454	  Rockchip SoCs.
455
456config PWM_SAMSUNG
457	tristate "Samsung PWM support"
458	depends on PLAT_SAMSUNG || ARCH_S5PV210 || ARCH_EXYNOS || COMPILE_TEST
459	depends on HAS_IOMEM
460	help
461	  Generic PWM framework driver for Samsung.
462
463	  To compile this driver as a module, choose M here: the module
464	  will be called pwm-samsung.
465
466config PWM_SIFIVE
467	tristate "SiFive PWM support"
468	depends on OF
469	depends on COMMON_CLK && HAS_IOMEM
470	depends on RISCV || COMPILE_TEST
471	help
472	  Generic PWM framework driver for SiFive SoCs.
473
474	  To compile this driver as a module, choose M here: the module
475	  will be called pwm-sifive.
476
477config PWM_SL28CPLD
478	tristate "Kontron sl28cpld PWM support"
479	depends on MFD_SL28CPLD || COMPILE_TEST
480	help
481	  Generic PWM framework driver for board management controller
482	  found on the Kontron sl28 CPLD.
483
484	  To compile this driver as a module, choose M here: the module
485	  will be called pwm-sl28cpld.
486
487config PWM_SPEAR
488	tristate "STMicroelectronics SPEAr PWM support"
489	depends on PLAT_SPEAR || COMPILE_TEST
490	depends on HAS_IOMEM && OF
491	help
492	  Generic PWM framework driver for the PWM controller on ST
493	  SPEAr SoCs.
494
495	  To compile this driver as a module, choose M here: the module
496	  will be called pwm-spear.
497
498config PWM_SPRD
499	tristate "Spreadtrum PWM support"
500	depends on ARCH_SPRD || COMPILE_TEST
501	depends on HAS_IOMEM
502	help
503	  Generic PWM framework driver for the PWM controller on
504	  Spreadtrum SoCs.
505
506	  To compile this driver as a module, choose M here: the module
507	  will be called pwm-sprd.
508
509config PWM_STI
510	tristate "STiH4xx PWM support"
511	depends on ARCH_STI || COMPILE_TEST
512	depends on HAS_IOMEM && OF
513	help
514	  Generic PWM framework driver for STiH4xx SoCs.
515
516	  To compile this driver as a module, choose M here: the module
517	  will be called pwm-sti.
518
519config PWM_STM32
520	tristate "STMicroelectronics STM32 PWM"
521	depends on MFD_STM32_TIMERS || COMPILE_TEST
522	help
523	  Generic PWM framework driver for STM32 SoCs.
524
525	  To compile this driver as a module, choose M here: the module
526	  will be called pwm-stm32.
527
528config PWM_STM32_LP
529	tristate "STMicroelectronics STM32 PWM LP"
530	depends on MFD_STM32_LPTIMER || COMPILE_TEST
531	help
532	  Generic PWM framework driver for STMicroelectronics STM32 SoCs
533	  with Low-Power Timer (LPTIM).
534
535	  To compile this driver as a module, choose M here: the module
536	  will be called pwm-stm32-lp.
537
538config PWM_STMPE
539	bool "STMPE expander PWM export"
540	depends on MFD_STMPE
541	help
542	  This enables support for the PWMs found in the STMPE I/O
543	  expanders.
544
545config PWM_SUN4I
546	tristate "Allwinner PWM support"
547	depends on ARCH_SUNXI || COMPILE_TEST
548	depends on HAS_IOMEM && COMMON_CLK
549	help
550	  Generic PWM framework driver for Allwinner SoCs.
551
552	  To compile this driver as a module, choose M here: the module
553	  will be called pwm-sun4i.
554
555config PWM_TEGRA
556	tristate "NVIDIA Tegra PWM support"
557	depends on ARCH_TEGRA || COMPILE_TEST
558	depends on HAS_IOMEM
559	help
560	  Generic PWM framework driver for the PWFM controller found on NVIDIA
561	  Tegra SoCs.
562
563	  To compile this driver as a module, choose M here: the module
564	  will be called pwm-tegra.
565
566config PWM_TIECAP
567	tristate "ECAP PWM support"
568	depends on ARCH_OMAP2PLUS || ARCH_DAVINCI_DA8XX || ARCH_KEYSTONE || ARCH_K3 || COMPILE_TEST
569	depends on HAS_IOMEM
570	help
571	  PWM driver support for the ECAP APWM controller found on TI SOCs
572
573	  To compile this driver as a module, choose M here: the module
574	  will be called pwm-tiecap.
575
576config PWM_TIEHRPWM
577	tristate "EHRPWM PWM support"
578	depends on ARCH_OMAP2PLUS || ARCH_DAVINCI_DA8XX || ARCH_K3 || COMPILE_TEST
579	depends on HAS_IOMEM
580	help
581	  PWM driver support for the EHRPWM controller found on TI SOCs
582
583	  To compile this driver as a module, choose M here: the module
584	  will be called pwm-tiehrpwm.
585
586config PWM_TWL
587	tristate "TWL4030/6030 PWM support"
588	depends on TWL4030_CORE
589	help
590	  Generic PWM framework driver for TWL4030/6030.
591
592	  To compile this driver as a module, choose M here: the module
593	  will be called pwm-twl.
594
595config PWM_TWL_LED
596	tristate "TWL4030/6030 PWM support for LED drivers"
597	depends on TWL4030_CORE
598	help
599	  Generic PWM framework driver for TWL4030/6030 LED terminals.
600
601	  To compile this driver as a module, choose M here: the module
602	  will be called pwm-twl-led.
603
604config PWM_VT8500
605	tristate "vt8500 PWM support"
606	depends on ARCH_VT8500 || COMPILE_TEST
607	depends on HAS_IOMEM
608	help
609	  Generic PWM framework driver for vt8500.
610
611	  To compile this driver as a module, choose M here: the module
612	  will be called pwm-vt8500.
613
614config PWM_ZX
615	tristate "ZTE ZX PWM support"
616	depends on ARCH_ZX || COMPILE_TEST
617	depends on HAS_IOMEM
618	help
619	  Generic PWM framework driver for ZTE ZX family SoCs.
620
621	  To compile this driver as a module, choose M here: the module
622	  will be called pwm-zx.
623
624endif
625