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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_APPLE
55 tristate "Apple SoC PWM support"
56 depends on ARCH_APPLE || COMPILE_TEST
57 help
58 Generic PWM framework driver for PWM controller present on
59 Apple SoCs
60
61 Say Y here if you have an ARM Apple laptop, otherwise say N
62
63 To compile this driver as a module, choose M here: the module
64 will be called pwm-apple.
65
66config PWM_ATMEL
67 tristate "Atmel PWM support"
68 depends on ARCH_AT91 || COMPILE_TEST
69 depends on HAS_IOMEM && OF
70 help
71 Generic PWM framework driver for Atmel SoC.
72
73 To compile this driver as a module, choose M here: the module
74 will be called pwm-atmel.
75
76config PWM_ATMEL_HLCDC_PWM
77 tristate "Atmel HLCDC PWM support"
78 depends on MFD_ATMEL_HLCDC
79 depends on HAVE_CLK
80 help
81 Generic PWM framework driver for the PWM output of the HLCDC
82 (Atmel High-end LCD Controller). This PWM output is mainly used
83 to control the LCD backlight.
84
85 To compile this driver as a module, choose M here: the module
86 will be called pwm-atmel-hlcdc.
87
88config PWM_ATMEL_TCB
89 tristate "Atmel TC Block PWM support"
90 depends on OF
91 select REGMAP_MMIO
92 help
93 Generic PWM framework driver for Atmel Timer Counter Block.
94
95 A Timer Counter Block provides 6 PWM devices grouped by 2.
96 Devices in a given group must have the same period.
97
98 To compile this driver as a module, choose M here: the module
99 will be called pwm-atmel-tcb.
100
101config PWM_BCM_IPROC
102 tristate "iProc PWM support"
103 depends on ARCH_BCM_IPROC || COMPILE_TEST
104 depends on COMMON_CLK && HAS_IOMEM
105 default ARCH_BCM_IPROC
106 help
107 Generic PWM framework driver for Broadcom iProc PWM block. This
108 block is used in Broadcom iProc SoC's.
109
110 To compile this driver as a module, choose M here: the module
111 will be called pwm-bcm-iproc.
112
113config PWM_BCM_KONA
114 tristate "Kona PWM support"
115 depends on ARCH_BCM_MOBILE || ARCH_BCM_CYGNUS || COMPILE_TEST
116 depends on HAVE_CLK && HAS_IOMEM
117 default ARCH_BCM_MOBILE || ARCH_BCM_CYGNUS
118 help
119 Generic PWM framework driver for Broadcom Kona PWM block.
120
121 To compile this driver as a module, choose M here: the module
122 will be called pwm-bcm-kona.
123
124config PWM_BCM2835
125 tristate "BCM2835 PWM support"
126 depends on ARCH_BCM2835 || ARCH_BRCMSTB || COMPILE_TEST
127 depends on HAS_IOMEM
128 help
129 PWM framework driver for BCM2835 controller (Raspberry Pi)
130
131 To compile this driver as a module, choose M here: the module
132 will be called pwm-bcm2835.
133
134config PWM_BERLIN
135 tristate "Marvell Berlin PWM support"
136 depends on ARCH_BERLIN || COMPILE_TEST
137 depends on HAS_IOMEM
138 help
139 PWM framework driver for Marvell Berlin SoCs.
140
141 To compile this driver as a module, choose M here: the module
142 will be called pwm-berlin.
143
144config PWM_BRCMSTB
145 tristate "Broadcom STB PWM support"
146 depends on ARCH_BRCMSTB || BMIPS_GENERIC || COMPILE_TEST
147 depends on HAS_IOMEM
148 help
149 Generic PWM framework driver for the Broadcom Set-top-Box
150 SoCs (BCM7xxx).
151
152 To compile this driver as a module, choose M Here: the module
153 will be called pwm-brcmstb.c.
154
155config PWM_CLK
156 tristate "Clock based PWM support"
157 depends on HAVE_CLK || COMPILE_TEST
158 help
159 Generic PWM framework driver for outputs that can be
160 muxed to clocks.
161
162 To compile this driver as a module, choose M here: the module
163 will be called pwm-clk.
164
165config PWM_CLPS711X
166 tristate "CLPS711X PWM support"
167 depends on ARCH_CLPS711X || COMPILE_TEST
168 depends on HAS_IOMEM
169 help
170 Generic PWM framework driver for Cirrus Logic CLPS711X.
171
172 To compile this driver as a module, choose M here: the module
173 will be called pwm-clps711x.
174
175config PWM_CRC
176 tristate "Intel Crystalcove (CRC) PWM support"
177 depends on INTEL_SOC_PMIC
178 help
179 Generic PWM framework driver for Crystalcove (CRC) PMIC based PWM
180 control.
181
182config PWM_CROS_EC
183 tristate "ChromeOS EC PWM driver"
184 depends on CROS_EC
185 help
186 PWM driver for exposing a PWM attached to the ChromeOS Embedded
187 Controller.
188
189config PWM_DWC_CORE
190 tristate
191 depends on HAS_IOMEM
192 help
193 PWM driver for Synopsys DWC PWM Controller.
194
195 To compile this driver as a module, build the dependecies as
196 modules, this will be called pwm-dwc-core.
197
198config PWM_DWC
199 tristate "DesignWare PWM Controller (PCI bus)"
200 depends on HAS_IOMEM && PCI
201 select PWM_DWC_CORE
202 help
203 PWM driver for Synopsys DWC PWM Controller attached to a PCI bus.
204
205 To compile this driver as a module, choose M here: the module
206 will be called pwm-dwc.
207
208config PWM_EP93XX
209 tristate "Cirrus Logic EP93xx PWM support"
210 depends on ARCH_EP93XX || COMPILE_TEST
211 depends on HAS_IOMEM
212 help
213 Generic PWM framework driver for Cirrus Logic EP93xx.
214
215 To compile this driver as a module, choose M here: the module
216 will be called pwm-ep93xx.
217
218config PWM_FSL_FTM
219 tristate "Freescale FlexTimer Module (FTM) PWM support"
220 depends on HAS_IOMEM
221 depends on OF
222 select REGMAP_MMIO
223 help
224 Generic FTM PWM framework driver for Freescale VF610 and
225 Layerscape LS-1 SoCs.
226
227 To compile this driver as a module, choose M here: the module
228 will be called pwm-fsl-ftm.
229
230config PWM_HIBVT
231 tristate "HiSilicon BVT PWM support"
232 depends on ARCH_HISI || COMPILE_TEST
233 depends on HAS_IOMEM
234 help
235 Generic PWM framework driver for HiSilicon BVT SoCs.
236
237 To compile this driver as a module, choose M here: the module
238 will be called pwm-hibvt.
239
240config PWM_IMG
241 tristate "Imagination Technologies PWM driver"
242 depends on HAS_IOMEM
243 depends on MFD_SYSCON
244 depends on COMMON_CLK
245 depends on MIPS || COMPILE_TEST
246 help
247 Generic PWM framework driver for Imagination Technologies
248 PWM block which supports 4 channels.
249
250 To compile this driver as a module, choose M here: the module
251 will be called pwm-img
252
253config PWM_IMX1
254 tristate "i.MX1 PWM support"
255 depends on ARCH_MXC || COMPILE_TEST
256 depends on HAS_IOMEM
257 help
258 Generic PWM framework driver for i.MX1 and i.MX21
259
260 To compile this driver as a module, choose M here: the module
261 will be called pwm-imx1.
262
263config PWM_IMX27
264 tristate "i.MX27 PWM support"
265 depends on ARCH_MXC || COMPILE_TEST
266 depends on HAS_IOMEM
267 help
268 Generic PWM framework driver for i.MX27 and later i.MX SoCs.
269
270 To compile this driver as a module, choose M here: the module
271 will be called pwm-imx27.
272
273config PWM_IMX_TPM
274 tristate "i.MX TPM PWM support"
275 depends on ARCH_MXC || COMPILE_TEST
276 depends on HAVE_CLK && HAS_IOMEM
277 help
278 Generic PWM framework driver for i.MX7ULP TPM module, TPM's full
279 name is Low Power Timer/Pulse Width Modulation Module.
280
281 To compile this driver as a module, choose M here: the module
282 will be called pwm-imx-tpm.
283
284config PWM_INTEL_LGM
285 tristate "Intel LGM PWM support"
286 depends on HAS_IOMEM
287 depends on (OF && X86) || COMPILE_TEST
288 select REGMAP_MMIO
289 help
290 Generic PWM fan controller driver for LGM SoC.
291
292 To compile this driver as a module, choose M here: the module
293 will be called pwm-intel-lgm.
294
295config PWM_IQS620A
296 tristate "Azoteq IQS620A PWM support"
297 depends on MFD_IQS62X || COMPILE_TEST
298 help
299 Generic PWM framework driver for the Azoteq IQS620A multi-function
300 sensor.
301
302 To compile this driver as a module, choose M here: the module will
303 be called pwm-iqs620a.
304
305config PWM_JZ4740
306 tristate "Ingenic JZ47xx PWM support"
307 depends on MACH_INGENIC || COMPILE_TEST
308 depends on COMMON_CLK && OF
309 select MFD_SYSCON
310 help
311 Generic PWM framework driver for Ingenic JZ47xx based
312 machines.
313
314 To compile this driver as a module, choose M here: the module
315 will be called pwm-jz4740.
316
317config PWM_KEEMBAY
318 tristate "Intel Keem Bay PWM driver"
319 depends on ARCH_KEEMBAY || COMPILE_TEST
320 depends on COMMON_CLK && HAS_IOMEM
321 help
322 The platform driver for Intel Keem Bay PWM controller.
323
324 To compile this driver as a module, choose M here: the module
325 will be called pwm-keembay.
326
327config PWM_LP3943
328 tristate "TI/National Semiconductor LP3943 PWM support"
329 depends on MFD_LP3943
330 help
331 Generic PWM framework driver for LP3943 which supports two PWM
332 channels.
333
334 To compile this driver as a module, choose M here: the module
335 will be called pwm-lp3943.
336
337config PWM_LPC18XX_SCT
338 tristate "LPC18xx/43xx PWM/SCT support"
339 depends on ARCH_LPC18XX || COMPILE_TEST
340 depends on HAS_IOMEM
341 help
342 Generic PWM framework driver for NXP LPC18xx PWM/SCT which
343 supports 16 channels.
344 A maximum of 15 channels can be requested simultaneously and
345 must have the same period.
346
347 To compile this driver as a module, choose M here: the module
348 will be called pwm-lpc18xx-sct.
349
350config PWM_LPC32XX
351 tristate "LPC32XX PWM support"
352 depends on ARCH_LPC32XX || COMPILE_TEST
353 depends on HAS_IOMEM
354 help
355 Generic PWM framework driver for LPC32XX. The LPC32XX SOC has two
356 PWM controllers.
357
358 To compile this driver as a module, choose M here: the module
359 will be called pwm-lpc32xx.
360
361config PWM_LPSS
362 depends on HAS_IOMEM
363 tristate
364
365config PWM_LPSS_PCI
366 tristate "Intel LPSS PWM PCI driver"
367 depends on X86 || COMPILE_TEST
368 depends on HAS_IOMEM && PCI
369 select PWM_LPSS
370 help
371 The PCI driver for Intel Low Power Subsystem PWM controller.
372
373 To compile this driver as a module, choose M here: the module
374 will be called pwm-lpss-pci.
375
376config PWM_LPSS_PLATFORM
377 tristate "Intel LPSS PWM platform driver"
378 depends on (X86 && ACPI) || COMPILE_TEST
379 depends on HAS_IOMEM
380 select PWM_LPSS
381 help
382 The platform driver for Intel Low Power Subsystem PWM controller.
383
384 To compile this driver as a module, choose M here: the module
385 will be called pwm-lpss-platform.
386
387config PWM_MESON
388 tristate "Amlogic Meson PWM driver"
389 depends on ARCH_MESON || COMPILE_TEST
390 depends on COMMON_CLK && HAS_IOMEM
391 help
392 The platform driver for Amlogic Meson PWM controller.
393
394 To compile this driver as a module, choose M here: the module
395 will be called pwm-meson.
396
397config PWM_MTK_DISP
398 tristate "MediaTek display PWM driver"
399 depends on ARCH_MEDIATEK || COMPILE_TEST
400 depends on HAS_IOMEM
401 help
402 Generic PWM framework driver for MediaTek disp-pwm device.
403 The PWM is used to control the backlight brightness for display.
404
405 To compile this driver as a module, choose M here: the module
406 will be called pwm-mtk-disp.
407
408config PWM_MEDIATEK
409 tristate "MediaTek PWM support"
410 depends on ARCH_MEDIATEK || RALINK || COMPILE_TEST
411 depends on HAS_IOMEM
412 help
413 Generic PWM framework driver for Mediatek ARM SoC.
414
415 To compile this driver as a module, choose M here: the module
416 will be called pwm-mediatek.
417
418config PWM_MICROCHIP_CORE
419 tristate "Microchip corePWM PWM support"
420 depends on ARCH_MICROCHIP_POLARFIRE || COMPILE_TEST
421 depends on HAS_IOMEM && OF
422 help
423 PWM driver for Microchip FPGA soft IP core.
424
425 To compile this driver as a module, choose M here: the module
426 will be called pwm-microchip-core.
427
428config PWM_MXS
429 tristate "Freescale MXS PWM support"
430 depends on ARCH_MXS || COMPILE_TEST
431 depends on HAS_IOMEM && OF
432 select STMP_DEVICE
433 help
434 Generic PWM framework driver for Freescale MXS.
435
436 To compile this driver as a module, choose M here: the module
437 will be called pwm-mxs.
438
439config PWM_NTXEC
440 tristate "Netronix embedded controller PWM support"
441 depends on MFD_NTXEC
442 help
443 Say yes here if you want to support the PWM output of the embedded
444 controller found in certain e-book readers designed by the original
445 design manufacturer Netronix.
446
447config PWM_OMAP_DMTIMER
448 tristate "OMAP Dual-Mode Timer PWM support"
449 depends on OF
450 depends on OMAP_DM_TIMER || COMPILE_TEST
451 help
452 Generic PWM framework driver for OMAP Dual-Mode Timer PWM output
453
454 To compile this driver as a module, choose M here: the module
455 will be called pwm-omap-dmtimer
456
457config PWM_PCA9685
458 tristate "NXP PCA9685 PWM driver"
459 depends on I2C
460 select REGMAP_I2C
461 help
462 Generic PWM framework driver for NXP PCA9685 LED controller.
463
464 To compile this driver as a module, choose M here: the module
465 will be called pwm-pca9685.
466
467config PWM_PXA
468 tristate "PXA PWM support"
469 depends on ARCH_PXA || ARCH_MMP || COMPILE_TEST
470 depends on HAS_IOMEM
471 help
472 Generic PWM framework driver for PXA.
473
474 To compile this driver as a module, choose M here: the module
475 will be called pwm-pxa.
476
477config PWM_RASPBERRYPI_POE
478 tristate "Raspberry Pi Firwmware PoE Hat PWM support"
479 # Make sure not 'y' when RASPBERRYPI_FIRMWARE is 'm'. This can only
480 # happen when COMPILE_TEST=y, hence the added !RASPBERRYPI_FIRMWARE.
481 depends on RASPBERRYPI_FIRMWARE || (COMPILE_TEST && !RASPBERRYPI_FIRMWARE)
482 help
483 Enable Raspberry Pi firmware controller PWM bus used to control the
484 official RPI PoE hat
485
486config PWM_RCAR
487 tristate "Renesas R-Car PWM support"
488 depends on ARCH_RENESAS || COMPILE_TEST
489 depends on HAS_IOMEM
490 help
491 This driver exposes the PWM Timer controller found in Renesas
492 R-Car chips through the PWM API.
493
494 To compile this driver as a module, choose M here: the module
495 will be called pwm-rcar.
496
497config PWM_RENESAS_TPU
498 tristate "Renesas TPU PWM support"
499 depends on ARCH_RENESAS || COMPILE_TEST
500 depends on HAS_IOMEM
501 help
502 This driver exposes the Timer Pulse Unit (TPU) PWM controller found
503 in Renesas chips through the PWM API.
504
505 To compile this driver as a module, choose M here: the module
506 will be called pwm-renesas-tpu.
507
508config PWM_ROCKCHIP
509 tristate "Rockchip PWM support"
510 depends on ARCH_ROCKCHIP || COMPILE_TEST
511 depends on HAS_IOMEM
512 help
513 Generic PWM framework driver for the PWM controller found on
514 Rockchip SoCs.
515
516config PWM_RZ_MTU3
517 tristate "Renesas RZ/G2L MTU3a PWM Timer support"
518 depends on RZ_MTU3
519 depends on HAS_IOMEM
520 help
521 This driver exposes the MTU3a PWM Timer controller found in Renesas
522 RZ/G2L like chips through the PWM API.
523
524 To compile this driver as a module, choose M here: the module
525 will be called pwm-rz-mtu3.
526
527config PWM_SAMSUNG
528 tristate "Samsung PWM support"
529 depends on PLAT_SAMSUNG || ARCH_S5PV210 || ARCH_EXYNOS || COMPILE_TEST
530 depends on HAS_IOMEM
531 help
532 Generic PWM framework driver for Samsung S3C24xx, S3C64xx, S5Pv210
533 and Exynos SoCs.
534 Choose Y here only if you build for such Samsung SoC.
535
536 To compile this driver as a module, choose M here: the module
537 will be called pwm-samsung.
538
539config PWM_SIFIVE
540 tristate "SiFive PWM support"
541 depends on OF
542 depends on COMMON_CLK && HAS_IOMEM
543 depends on RISCV || COMPILE_TEST
544 help
545 Generic PWM framework driver for SiFive SoCs.
546
547 To compile this driver as a module, choose M here: the module
548 will be called pwm-sifive.
549
550config PWM_SL28CPLD
551 tristate "Kontron sl28cpld PWM support"
552 depends on MFD_SL28CPLD || COMPILE_TEST
553 help
554 Generic PWM framework driver for board management controller
555 found on the Kontron sl28 CPLD.
556
557 To compile this driver as a module, choose M here: the module
558 will be called pwm-sl28cpld.
559
560config PWM_SPEAR
561 tristate "STMicroelectronics SPEAr PWM support"
562 depends on PLAT_SPEAR || COMPILE_TEST
563 depends on HAS_IOMEM && OF
564 help
565 Generic PWM framework driver for the PWM controller on ST
566 SPEAr SoCs.
567
568 To compile this driver as a module, choose M here: the module
569 will be called pwm-spear.
570
571config PWM_SPRD
572 tristate "Spreadtrum PWM support"
573 depends on ARCH_SPRD || COMPILE_TEST
574 depends on HAS_IOMEM
575 help
576 Generic PWM framework driver for the PWM controller on
577 Spreadtrum SoCs.
578
579 To compile this driver as a module, choose M here: the module
580 will be called pwm-sprd.
581
582config PWM_STI
583 tristate "STiH4xx PWM support"
584 depends on ARCH_STI || COMPILE_TEST
585 depends on HAS_IOMEM && OF
586 help
587 Generic PWM framework driver for STiH4xx SoCs.
588
589 To compile this driver as a module, choose M here: the module
590 will be called pwm-sti.
591
592config PWM_STM32
593 tristate "STMicroelectronics STM32 PWM"
594 depends on MFD_STM32_TIMERS || COMPILE_TEST
595 help
596 Generic PWM framework driver for STM32 SoCs.
597
598 To compile this driver as a module, choose M here: the module
599 will be called pwm-stm32.
600
601config PWM_STM32_LP
602 tristate "STMicroelectronics STM32 PWM LP"
603 depends on MFD_STM32_LPTIMER || COMPILE_TEST
604 help
605 Generic PWM framework driver for STMicroelectronics STM32 SoCs
606 with Low-Power Timer (LPTIM).
607
608 To compile this driver as a module, choose M here: the module
609 will be called pwm-stm32-lp.
610
611config PWM_STMPE
612 bool "STMPE expander PWM export"
613 depends on MFD_STMPE
614 help
615 This enables support for the PWMs found in the STMPE I/O
616 expanders.
617
618config PWM_SUN4I
619 tristate "Allwinner PWM support"
620 depends on ARCH_SUNXI || COMPILE_TEST
621 depends on HAS_IOMEM && COMMON_CLK
622 help
623 Generic PWM framework driver for Allwinner SoCs.
624
625 To compile this driver as a module, choose M here: the module
626 will be called pwm-sun4i.
627
628config PWM_SUNPLUS
629 tristate "Sunplus PWM support"
630 depends on ARCH_SUNPLUS || COMPILE_TEST
631 depends on HAS_IOMEM && OF
632 help
633 Generic PWM framework driver for the PWM controller on
634 Sunplus SoCs.
635
636 To compile this driver as a module, choose M here: the module
637 will be called pwm-sunplus.
638
639config PWM_TEGRA
640 tristate "NVIDIA Tegra PWM support"
641 depends on ARCH_TEGRA || COMPILE_TEST
642 depends on HAS_IOMEM
643 help
644 Generic PWM framework driver for the PWFM controller found on NVIDIA
645 Tegra SoCs.
646
647 To compile this driver as a module, choose M here: the module
648 will be called pwm-tegra.
649
650config PWM_TIECAP
651 tristate "ECAP PWM support"
652 depends on ARCH_OMAP2PLUS || ARCH_DAVINCI_DA8XX || ARCH_KEYSTONE || ARCH_K3 || COMPILE_TEST
653 depends on HAS_IOMEM
654 help
655 PWM driver support for the ECAP APWM controller found on TI SOCs
656
657 To compile this driver as a module, choose M here: the module
658 will be called pwm-tiecap.
659
660config PWM_TIEHRPWM
661 tristate "EHRPWM PWM support"
662 depends on ARCH_OMAP2PLUS || ARCH_DAVINCI_DA8XX || ARCH_K3 || COMPILE_TEST
663 depends on HAS_IOMEM
664 help
665 PWM driver support for the EHRPWM controller found on TI SOCs
666
667 To compile this driver as a module, choose M here: the module
668 will be called pwm-tiehrpwm.
669
670config PWM_TWL
671 tristate "TWL4030/6030 PWM support"
672 depends on TWL4030_CORE
673 help
674 Generic PWM framework driver for TWL4030/6030.
675
676 To compile this driver as a module, choose M here: the module
677 will be called pwm-twl.
678
679config PWM_TWL_LED
680 tristate "TWL4030/6030 PWM support for LED drivers"
681 depends on TWL4030_CORE
682 help
683 Generic PWM framework driver for TWL4030/6030 LED terminals.
684
685 To compile this driver as a module, choose M here: the module
686 will be called pwm-twl-led.
687
688config PWM_VISCONTI
689 tristate "Toshiba Visconti PWM support"
690 depends on ARCH_VISCONTI || COMPILE_TEST
691 help
692 PWM Subsystem driver support for Toshiba Visconti SoCs.
693
694 To compile this driver as a module, choose M here: the module
695 will be called pwm-visconti.
696
697config PWM_VT8500
698 tristate "vt8500 PWM support"
699 depends on ARCH_VT8500 || COMPILE_TEST
700 depends on HAS_IOMEM
701 help
702 Generic PWM framework driver for vt8500.
703
704 To compile this driver as a module, choose M here: the module
705 will be called pwm-vt8500.
706
707config PWM_XILINX
708 tristate "Xilinx AXI Timer PWM support"
709 depends on OF_ADDRESS
710 depends on COMMON_CLK
711 select REGMAP_MMIO
712 help
713 PWM driver for Xilinx LogiCORE IP AXI timers. This timer is
714 typically a soft core which may be present in Xilinx FPGAs.
715 This device may also be present in Microblaze soft processors.
716 If you don't have this IP in your design, choose N.
717
718 To compile this driver as a module, choose M here: the module
719 will be called pwm-xilinx.
720
721endif
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
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 || COMPILE_TEST
80 depends on COMMON_CLK
81 default ARCH_BCM_IPROC
82 help
83 Generic PWM framework driver for Broadcom iProc PWM block. This
84 block is used in Broadcom iProc SoC's.
85
86 To compile this driver as a module, choose M here: the module
87 will be called pwm-bcm-iproc.
88
89config PWM_BCM_KONA
90 tristate "Kona PWM support"
91 depends on ARCH_BCM_MOBILE
92 help
93 Generic PWM framework driver for Broadcom Kona PWM block.
94
95 To compile this driver as a module, choose M here: the module
96 will be called pwm-bcm-kona.
97
98config PWM_BCM2835
99 tristate "BCM2835 PWM support"
100 depends on ARCH_BCM2835
101 help
102 PWM framework driver for BCM2835 controller (Raspberry Pi)
103
104 To compile this driver as a module, choose M here: the module
105 will be called pwm-bcm2835.
106
107config PWM_BERLIN
108 tristate "Marvell Berlin PWM support"
109 depends on ARCH_BERLIN
110 help
111 PWM framework driver for Marvell Berlin SoCs.
112
113 To compile this driver as a module, choose M here: the module
114 will be called pwm-berlin.
115
116config PWM_BRCMSTB
117 tristate "Broadcom STB PWM support"
118 depends on ARCH_BRCMSTB || BMIPS_GENERIC
119 help
120 Generic PWM framework driver for the Broadcom Set-top-Box
121 SoCs (BCM7xxx).
122
123 To compile this driver as a module, choose M Here: the module
124 will be called pwm-brcmstb.c.
125
126config PWM_CLPS711X
127 tristate "CLPS711X PWM support"
128 depends on ARCH_CLPS711X || COMPILE_TEST
129 depends on HAS_IOMEM
130 help
131 Generic PWM framework driver for Cirrus Logic CLPS711X.
132
133 To compile this driver as a module, choose M here: the module
134 will be called pwm-clps711x.
135
136config PWM_CRC
137 bool "Intel Crystalcove (CRC) PWM support"
138 depends on X86 && INTEL_SOC_PMIC
139 help
140 Generic PWM framework driver for Crystalcove (CRC) PMIC based PWM
141 control.
142
143config PWM_CROS_EC
144 tristate "ChromeOS EC PWM driver"
145 depends on MFD_CROS_EC
146 help
147 PWM driver for exposing a PWM attached to the ChromeOS Embedded
148 Controller.
149
150config PWM_EP93XX
151 tristate "Cirrus Logic EP93xx PWM support"
152 depends on ARCH_EP93XX
153 help
154 Generic PWM framework driver for Cirrus Logic EP93xx.
155
156 To compile this driver as a module, choose M here: the module
157 will be called pwm-ep93xx.
158
159config PWM_FSL_FTM
160 tristate "Freescale FlexTimer Module (FTM) PWM support"
161 depends on HAS_IOMEM
162 depends on OF
163 select REGMAP_MMIO
164 help
165 Generic FTM PWM framework driver for Freescale VF610 and
166 Layerscape LS-1 SoCs.
167
168 To compile this driver as a module, choose M here: the module
169 will be called pwm-fsl-ftm.
170
171config PWM_HIBVT
172 tristate "HiSilicon BVT PWM support"
173 depends on ARCH_HISI || COMPILE_TEST
174 help
175 Generic PWM framework driver for HiSilicon BVT SoCs.
176
177 To compile this driver as a module, choose M here: the module
178 will be called pwm-hibvt.
179
180config PWM_IMG
181 tristate "Imagination Technologies PWM driver"
182 depends on HAS_IOMEM
183 depends on MFD_SYSCON
184 depends on COMMON_CLK
185 depends on MIPS || COMPILE_TEST
186 help
187 Generic PWM framework driver for Imagination Technologies
188 PWM block which supports 4 channels.
189
190 To compile this driver as a module, choose M here: the module
191 will be called pwm-img
192
193config PWM_IMX
194 tristate "i.MX PWM support"
195 depends on ARCH_MXC
196 help
197 Generic PWM framework driver for i.MX.
198
199 To compile this driver as a module, choose M here: the module
200 will be called pwm-imx.
201
202config PWM_JZ4740
203 tristate "Ingenic JZ47xx PWM support"
204 depends on MACH_INGENIC
205 help
206 Generic PWM framework driver for Ingenic JZ47xx based
207 machines.
208
209 To compile this driver as a module, choose M here: the module
210 will be called pwm-jz4740.
211
212config PWM_LP3943
213 tristate "TI/National Semiconductor LP3943 PWM support"
214 depends on MFD_LP3943
215 help
216 Generic PWM framework driver for LP3943 which supports two PWM
217 channels.
218
219 To compile this driver as a module, choose M here: the module
220 will be called pwm-lp3943.
221
222config PWM_LPC18XX_SCT
223 tristate "LPC18xx/43xx PWM/SCT support"
224 depends on ARCH_LPC18XX
225 help
226 Generic PWM framework driver for NXP LPC18xx PWM/SCT which
227 supports 16 channels.
228 A maximum of 15 channels can be requested simultaneously and
229 must have the same period.
230
231 To compile this driver as a module, choose M here: the module
232 will be called pwm-lpc18xx-sct.
233
234config PWM_LPC32XX
235 tristate "LPC32XX PWM support"
236 depends on ARCH_LPC32XX
237 help
238 Generic PWM framework driver for LPC32XX. The LPC32XX SOC has two
239 PWM controllers.
240
241 To compile this driver as a module, choose M here: the module
242 will be called pwm-lpc32xx.
243
244config PWM_LPSS
245 tristate
246
247config PWM_LPSS_PCI
248 tristate "Intel LPSS PWM PCI driver"
249 depends on X86 && PCI
250 select PWM_LPSS
251 help
252 The PCI driver for Intel Low Power Subsystem PWM controller.
253
254 To compile this driver as a module, choose M here: the module
255 will be called pwm-lpss-pci.
256
257config PWM_LPSS_PLATFORM
258 tristate "Intel LPSS PWM platform driver"
259 depends on X86 && ACPI
260 select PWM_LPSS
261 help
262 The platform driver for Intel Low Power Subsystem PWM controller.
263
264 To compile this driver as a module, choose M here: the module
265 will be called pwm-lpss-platform.
266
267config PWM_MESON
268 tristate "Amlogic Meson PWM driver"
269 depends on ARCH_MESON
270 help
271 The platform driver for Amlogic Meson PWM controller.
272
273 To compile this driver as a module, choose M here: the module
274 will be called pwm-meson.
275
276config PWM_MTK_DISP
277 tristate "MediaTek display PWM driver"
278 depends on ARCH_MEDIATEK || COMPILE_TEST
279 depends on HAS_IOMEM
280 help
281 Generic PWM framework driver for MediaTek disp-pwm device.
282 The PWM is used to control the backlight brightness for display.
283
284 To compile this driver as a module, choose M here: the module
285 will be called pwm-mtk-disp.
286
287config PWM_MEDIATEK
288 tristate "MediaTek PWM support"
289 depends on ARCH_MEDIATEK || COMPILE_TEST
290 help
291 Generic PWM framework driver for Mediatek ARM SoC.
292
293 To compile this driver as a module, choose M here: the module
294 will be called pwm-mediatek.
295
296config PWM_MXS
297 tristate "Freescale MXS PWM support"
298 depends on ARCH_MXS && OF
299 select STMP_DEVICE
300 help
301 Generic PWM framework driver for Freescale MXS.
302
303 To compile this driver as a module, choose M here: the module
304 will be called pwm-mxs.
305
306config PWM_OMAP_DMTIMER
307 tristate "OMAP Dual-Mode Timer PWM support"
308 depends on OF && ARCH_OMAP && OMAP_DM_TIMER
309 help
310 Generic PWM framework driver for OMAP Dual-Mode Timer PWM output
311
312 To compile this driver as a module, choose M here: the module
313 will be called pwm-omap-dmtimer
314
315config PWM_PCA9685
316 tristate "NXP PCA9685 PWM driver"
317 depends on I2C
318 select REGMAP_I2C
319 help
320 Generic PWM framework driver for NXP PCA9685 LED controller.
321
322 To compile this driver as a module, choose M here: the module
323 will be called pwm-pca9685.
324
325config PWM_PUV3
326 tristate "PKUnity NetBook-0916 PWM support"
327 depends on ARCH_PUV3
328 help
329 Generic PWM framework driver for PKUnity NetBook-0916.
330
331 To compile this driver as a module, choose M here: the module
332 will be called pwm-puv3.
333
334config PWM_PXA
335 tristate "PXA PWM support"
336 depends on ARCH_PXA
337 help
338 Generic PWM framework driver for PXA.
339
340 To compile this driver as a module, choose M here: the module
341 will be called pwm-pxa.
342
343config PWM_RCAR
344 tristate "Renesas R-Car PWM support"
345 depends on ARCH_RENESAS || COMPILE_TEST
346 depends on HAS_IOMEM
347 help
348 This driver exposes the PWM Timer controller found in Renesas
349 R-Car chips through the PWM API.
350
351 To compile this driver as a module, choose M here: the module
352 will be called pwm-rcar.
353
354config PWM_RENESAS_TPU
355 tristate "Renesas TPU PWM support"
356 depends on ARCH_RENESAS || COMPILE_TEST
357 depends on HAS_IOMEM
358 help
359 This driver exposes the Timer Pulse Unit (TPU) PWM controller found
360 in Renesas chips through the PWM API.
361
362 To compile this driver as a module, choose M here: the module
363 will be called pwm-renesas-tpu.
364
365config PWM_ROCKCHIP
366 tristate "Rockchip PWM support"
367 depends on ARCH_ROCKCHIP
368 help
369 Generic PWM framework driver for the PWM controller found on
370 Rockchip SoCs.
371
372config PWM_SAMSUNG
373 tristate "Samsung PWM support"
374 depends on PLAT_SAMSUNG || ARCH_EXYNOS
375 help
376 Generic PWM framework driver for Samsung.
377
378 To compile this driver as a module, choose M here: the module
379 will be called pwm-samsung.
380
381config PWM_SPEAR
382 tristate "STMicroelectronics SPEAr PWM support"
383 depends on PLAT_SPEAR
384 depends on OF
385 help
386 Generic PWM framework driver for the PWM controller on ST
387 SPEAr SoCs.
388
389 To compile this driver as a module, choose M here: the module
390 will be called pwm-spear.
391
392config PWM_STI
393 tristate "STiH4xx PWM support"
394 depends on ARCH_STI
395 depends on OF
396 help
397 Generic PWM framework driver for STiH4xx SoCs.
398
399 To compile this driver as a module, choose M here: the module
400 will be called pwm-sti.
401
402config PWM_STM32
403 tristate "STMicroelectronics STM32 PWM"
404 depends on MFD_STM32_TIMERS || COMPILE_TEST
405 help
406 Generic PWM framework driver for STM32 SoCs.
407
408 To compile this driver as a module, choose M here: the module
409 will be called pwm-stm32.
410
411config PWM_STM32_LP
412 tristate "STMicroelectronics STM32 PWM LP"
413 depends on MFD_STM32_LPTIMER || COMPILE_TEST
414 help
415 Generic PWM framework driver for STMicroelectronics STM32 SoCs
416 with Low-Power Timer (LPTIM).
417
418 To compile this driver as a module, choose M here: the module
419 will be called pwm-stm32-lp.
420
421config PWM_STMPE
422 bool "STMPE expander PWM export"
423 depends on MFD_STMPE
424 help
425 This enables support for the PWMs found in the STMPE I/O
426 expanders.
427
428config PWM_SUN4I
429 tristate "Allwinner PWM support"
430 depends on ARCH_SUNXI || COMPILE_TEST
431 depends on HAS_IOMEM && COMMON_CLK
432 help
433 Generic PWM framework driver for Allwinner SoCs.
434
435 To compile this driver as a module, choose M here: the module
436 will be called pwm-sun4i.
437
438config PWM_TEGRA
439 tristate "NVIDIA Tegra PWM support"
440 depends on ARCH_TEGRA
441 help
442 Generic PWM framework driver for the PWFM controller found on NVIDIA
443 Tegra SoCs.
444
445 To compile this driver as a module, choose M here: the module
446 will be called pwm-tegra.
447
448config PWM_TIECAP
449 tristate "ECAP PWM support"
450 depends on ARCH_OMAP2PLUS || ARCH_DAVINCI_DA8XX || ARCH_KEYSTONE
451 help
452 PWM driver support for the ECAP APWM controller found on AM33XX
453 TI SOC
454
455 To compile this driver as a module, choose M here: the module
456 will be called pwm-tiecap.
457
458config PWM_TIEHRPWM
459 tristate "EHRPWM PWM support"
460 depends on ARCH_OMAP2PLUS || ARCH_DAVINCI_DA8XX
461 help
462 PWM driver support for the EHRPWM controller found on AM33XX
463 TI SOC
464
465 To compile this driver as a module, choose M here: the module
466 will be called pwm-tiehrpwm.
467
468config PWM_TIPWMSS
469 bool
470 default y if (ARCH_OMAP2PLUS) && (PWM_TIECAP || PWM_TIEHRPWM)
471 help
472 PWM Subsystem driver support for AM33xx SOC.
473
474 PWM submodules require PWM config space access from submodule
475 drivers and require common parent driver support.
476
477config PWM_TWL
478 tristate "TWL4030/6030 PWM support"
479 depends on TWL4030_CORE
480 help
481 Generic PWM framework driver for TWL4030/6030.
482
483 To compile this driver as a module, choose M here: the module
484 will be called pwm-twl.
485
486config PWM_TWL_LED
487 tristate "TWL4030/6030 PWM support for LED drivers"
488 depends on TWL4030_CORE
489 help
490 Generic PWM framework driver for TWL4030/6030 LED terminals.
491
492 To compile this driver as a module, choose M here: the module
493 will be called pwm-twl-led.
494
495config PWM_VT8500
496 tristate "vt8500 PWM support"
497 depends on ARCH_VT8500
498 help
499 Generic PWM framework driver for vt8500.
500
501 To compile this driver as a module, choose M here: the module
502 will be called pwm-vt8500.
503
504config PWM_ZX
505 tristate "ZTE ZX PWM support"
506 depends on ARCH_ZX
507 help
508 Generic PWM framework driver for ZTE ZX family SoCs.
509
510 To compile this driver as a module, choose M here: the module
511 will be called pwm-zx.
512
513endif