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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_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_CLK
144 tristate "Clock based PWM support"
145 depends on HAVE_CLK || COMPILE_TEST
146 help
147 Generic PWM framework driver for outputs that can be
148 muxed to clocks.
149
150 To compile this driver as a module, choose M here: the module
151 will be called pwm-clk.
152
153config PWM_CLPS711X
154 tristate "CLPS711X PWM support"
155 depends on ARCH_CLPS711X || COMPILE_TEST
156 depends on HAS_IOMEM
157 help
158 Generic PWM framework driver for Cirrus Logic CLPS711X.
159
160 To compile this driver as a module, choose M here: the module
161 will be called pwm-clps711x.
162
163config PWM_CRC
164 bool "Intel Crystalcove (CRC) PWM support"
165 depends on X86 && INTEL_SOC_PMIC
166 help
167 Generic PWM framework driver for Crystalcove (CRC) PMIC based PWM
168 control.
169
170config PWM_CROS_EC
171 tristate "ChromeOS EC PWM driver"
172 depends on CROS_EC
173 help
174 PWM driver for exposing a PWM attached to the ChromeOS Embedded
175 Controller.
176
177config PWM_DWC
178 tristate "DesignWare PWM Controller"
179 depends on PCI
180 help
181 PWM driver for Synopsys DWC PWM Controller attached to a PCI bus.
182
183 To compile this driver as a module, choose M here: the module
184 will be called pwm-dwc.
185
186config PWM_EP93XX
187 tristate "Cirrus Logic EP93xx PWM support"
188 depends on ARCH_EP93XX || COMPILE_TEST
189 depends on HAS_IOMEM
190 help
191 Generic PWM framework driver for Cirrus Logic EP93xx.
192
193 To compile this driver as a module, choose M here: the module
194 will be called pwm-ep93xx.
195
196config PWM_FSL_FTM
197 tristate "Freescale FlexTimer Module (FTM) PWM support"
198 depends on HAS_IOMEM
199 depends on OF
200 select REGMAP_MMIO
201 help
202 Generic FTM PWM framework driver for Freescale VF610 and
203 Layerscape LS-1 SoCs.
204
205 To compile this driver as a module, choose M here: the module
206 will be called pwm-fsl-ftm.
207
208config PWM_HIBVT
209 tristate "HiSilicon BVT PWM support"
210 depends on ARCH_HISI || COMPILE_TEST
211 depends on HAS_IOMEM
212 help
213 Generic PWM framework driver for HiSilicon BVT SoCs.
214
215 To compile this driver as a module, choose M here: the module
216 will be called pwm-hibvt.
217
218config PWM_IMG
219 tristate "Imagination Technologies PWM driver"
220 depends on HAS_IOMEM
221 depends on MFD_SYSCON
222 depends on COMMON_CLK
223 depends on MIPS || COMPILE_TEST
224 help
225 Generic PWM framework driver for Imagination Technologies
226 PWM block which supports 4 channels.
227
228 To compile this driver as a module, choose M here: the module
229 will be called pwm-img
230
231config PWM_IMX1
232 tristate "i.MX1 PWM support"
233 depends on ARCH_MXC || COMPILE_TEST
234 depends on HAS_IOMEM
235 help
236 Generic PWM framework driver for i.MX1 and i.MX21
237
238 To compile this driver as a module, choose M here: the module
239 will be called pwm-imx1.
240
241config PWM_IMX27
242 tristate "i.MX27 PWM support"
243 depends on ARCH_MXC || COMPILE_TEST
244 depends on HAS_IOMEM
245 help
246 Generic PWM framework driver for i.MX27 and later i.MX SoCs.
247
248 To compile this driver as a module, choose M here: the module
249 will be called pwm-imx27.
250
251config PWM_IMX_TPM
252 tristate "i.MX TPM PWM support"
253 depends on ARCH_MXC || COMPILE_TEST
254 depends on HAVE_CLK && HAS_IOMEM
255 help
256 Generic PWM framework driver for i.MX7ULP TPM module, TPM's full
257 name is Low Power Timer/Pulse Width Modulation Module.
258
259 To compile this driver as a module, choose M here: the module
260 will be called pwm-imx-tpm.
261
262config PWM_INTEL_LGM
263 tristate "Intel LGM PWM support"
264 depends on HAS_IOMEM
265 depends on (OF && X86) || COMPILE_TEST
266 select REGMAP_MMIO
267 help
268 Generic PWM fan controller driver for LGM SoC.
269
270 To compile this driver as a module, choose M here: the module
271 will be called pwm-intel-lgm.
272
273config PWM_IQS620A
274 tristate "Azoteq IQS620A PWM support"
275 depends on MFD_IQS62X || COMPILE_TEST
276 help
277 Generic PWM framework driver for the Azoteq IQS620A multi-function
278 sensor.
279
280 To compile this driver as a module, choose M here: the module will
281 be called pwm-iqs620a.
282
283config PWM_JZ4740
284 tristate "Ingenic JZ47xx PWM support"
285 depends on MACH_INGENIC || COMPILE_TEST
286 depends on COMMON_CLK && OF
287 select MFD_SYSCON
288 help
289 Generic PWM framework driver for Ingenic JZ47xx based
290 machines.
291
292 To compile this driver as a module, choose M here: the module
293 will be called pwm-jz4740.
294
295config PWM_KEEMBAY
296 tristate "Intel Keem Bay PWM driver"
297 depends on ARCH_KEEMBAY || COMPILE_TEST
298 depends on COMMON_CLK && HAS_IOMEM
299 help
300 The platform driver for Intel Keem Bay PWM controller.
301
302 To compile this driver as a module, choose M here: the module
303 will be called pwm-keembay.
304
305config PWM_LP3943
306 tristate "TI/National Semiconductor LP3943 PWM support"
307 depends on MFD_LP3943
308 help
309 Generic PWM framework driver for LP3943 which supports two PWM
310 channels.
311
312 To compile this driver as a module, choose M here: the module
313 will be called pwm-lp3943.
314
315config PWM_LPC18XX_SCT
316 tristate "LPC18xx/43xx PWM/SCT support"
317 depends on ARCH_LPC18XX || COMPILE_TEST
318 depends on HAS_IOMEM
319 help
320 Generic PWM framework driver for NXP LPC18xx PWM/SCT which
321 supports 16 channels.
322 A maximum of 15 channels can be requested simultaneously and
323 must have the same period.
324
325 To compile this driver as a module, choose M here: the module
326 will be called pwm-lpc18xx-sct.
327
328config PWM_LPC32XX
329 tristate "LPC32XX PWM support"
330 depends on ARCH_LPC32XX || COMPILE_TEST
331 depends on HAS_IOMEM
332 help
333 Generic PWM framework driver for LPC32XX. The LPC32XX SOC has two
334 PWM controllers.
335
336 To compile this driver as a module, choose M here: the module
337 will be called pwm-lpc32xx.
338
339config PWM_LPSS
340 depends on HAS_IOMEM
341 tristate
342
343config PWM_LPSS_PCI
344 tristate "Intel LPSS PWM PCI driver"
345 depends on X86 || COMPILE_TEST
346 depends on HAS_IOMEM && PCI
347 select PWM_LPSS
348 help
349 The PCI 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-pci.
353
354config PWM_LPSS_PLATFORM
355 tristate "Intel LPSS PWM platform driver"
356 depends on (X86 && ACPI) || COMPILE_TEST
357 depends on HAS_IOMEM
358 select PWM_LPSS
359 help
360 The platform driver for Intel Low Power Subsystem PWM controller.
361
362 To compile this driver as a module, choose M here: the module
363 will be called pwm-lpss-platform.
364
365config PWM_MESON
366 tristate "Amlogic Meson PWM driver"
367 depends on ARCH_MESON || COMPILE_TEST
368 depends on COMMON_CLK && HAS_IOMEM
369 help
370 The platform driver for Amlogic Meson PWM controller.
371
372 To compile this driver as a module, choose M here: the module
373 will be called pwm-meson.
374
375config PWM_MTK_DISP
376 tristate "MediaTek display PWM driver"
377 depends on ARCH_MEDIATEK || COMPILE_TEST
378 depends on HAS_IOMEM
379 help
380 Generic PWM framework driver for MediaTek disp-pwm device.
381 The PWM is used to control the backlight brightness for display.
382
383 To compile this driver as a module, choose M here: the module
384 will be called pwm-mtk-disp.
385
386config PWM_MEDIATEK
387 tristate "MediaTek PWM support"
388 depends on ARCH_MEDIATEK || RALINK || COMPILE_TEST
389 depends on HAS_IOMEM
390 help
391 Generic PWM framework driver for Mediatek ARM SoC.
392
393 To compile this driver as a module, choose M here: the module
394 will be called pwm-mediatek.
395
396config PWM_MXS
397 tristate "Freescale MXS PWM support"
398 depends on ARCH_MXS || COMPILE_TEST
399 depends on HAS_IOMEM && OF
400 select STMP_DEVICE
401 help
402 Generic PWM framework driver for Freescale MXS.
403
404 To compile this driver as a module, choose M here: the module
405 will be called pwm-mxs.
406
407config PWM_NTXEC
408 tristate "Netronix embedded controller PWM support"
409 depends on MFD_NTXEC
410 help
411 Say yes here if you want to support the PWM output of the embedded
412 controller found in certain e-book readers designed by the original
413 design manufacturer Netronix.
414
415config PWM_OMAP_DMTIMER
416 tristate "OMAP Dual-Mode Timer PWM support"
417 depends on OF
418 depends on OMAP_DM_TIMER || COMPILE_TEST
419 help
420 Generic PWM framework driver for OMAP Dual-Mode Timer PWM output
421
422 To compile this driver as a module, choose M here: the module
423 will be called pwm-omap-dmtimer
424
425config PWM_PCA9685
426 tristate "NXP PCA9685 PWM driver"
427 depends on I2C
428 select REGMAP_I2C
429 help
430 Generic PWM framework driver for NXP PCA9685 LED controller.
431
432 To compile this driver as a module, choose M here: the module
433 will be called pwm-pca9685.
434
435config PWM_PXA
436 tristate "PXA PWM support"
437 depends on ARCH_PXA || ARCH_MMP || COMPILE_TEST
438 depends on HAS_IOMEM
439 help
440 Generic PWM framework driver for PXA.
441
442 To compile this driver as a module, choose M here: the module
443 will be called pwm-pxa.
444
445config PWM_RASPBERRYPI_POE
446 tristate "Raspberry Pi Firwmware PoE Hat PWM support"
447 # Make sure not 'y' when RASPBERRYPI_FIRMWARE is 'm'. This can only
448 # happen when COMPILE_TEST=y, hence the added !RASPBERRYPI_FIRMWARE.
449 depends on RASPBERRYPI_FIRMWARE || (COMPILE_TEST && !RASPBERRYPI_FIRMWARE)
450 help
451 Enable Raspberry Pi firmware controller PWM bus used to control the
452 official RPI PoE hat
453
454config PWM_RCAR
455 tristate "Renesas R-Car PWM support"
456 depends on ARCH_RENESAS || COMPILE_TEST
457 depends on HAS_IOMEM
458 help
459 This driver exposes the PWM Timer controller found in Renesas
460 R-Car chips through the PWM API.
461
462 To compile this driver as a module, choose M here: the module
463 will be called pwm-rcar.
464
465config PWM_RENESAS_TPU
466 tristate "Renesas TPU PWM support"
467 depends on ARCH_RENESAS || COMPILE_TEST
468 depends on HAS_IOMEM
469 help
470 This driver exposes the Timer Pulse Unit (TPU) PWM controller found
471 in Renesas chips through the PWM API.
472
473 To compile this driver as a module, choose M here: the module
474 will be called pwm-renesas-tpu.
475
476config PWM_ROCKCHIP
477 tristate "Rockchip PWM support"
478 depends on ARCH_ROCKCHIP || COMPILE_TEST
479 depends on HAS_IOMEM
480 help
481 Generic PWM framework driver for the PWM controller found on
482 Rockchip SoCs.
483
484config PWM_SAMSUNG
485 tristate "Samsung PWM support"
486 depends on PLAT_SAMSUNG || ARCH_S5PV210 || ARCH_EXYNOS || COMPILE_TEST
487 depends on HAS_IOMEM
488 help
489 Generic PWM framework driver for Samsung S3C24xx, S3C64xx, S5Pv210
490 and Exynos SoCs.
491 Choose Y here only if you build for such Samsung SoC.
492
493 To compile this driver as a module, choose M here: the module
494 will be called pwm-samsung.
495
496config PWM_SIFIVE
497 tristate "SiFive PWM support"
498 depends on OF
499 depends on COMMON_CLK && HAS_IOMEM
500 depends on RISCV || COMPILE_TEST
501 help
502 Generic PWM framework driver for SiFive SoCs.
503
504 To compile this driver as a module, choose M here: the module
505 will be called pwm-sifive.
506
507config PWM_SL28CPLD
508 tristate "Kontron sl28cpld PWM support"
509 depends on MFD_SL28CPLD || COMPILE_TEST
510 help
511 Generic PWM framework driver for board management controller
512 found on the Kontron sl28 CPLD.
513
514 To compile this driver as a module, choose M here: the module
515 will be called pwm-sl28cpld.
516
517config PWM_SPEAR
518 tristate "STMicroelectronics SPEAr PWM support"
519 depends on PLAT_SPEAR || COMPILE_TEST
520 depends on HAS_IOMEM && OF
521 help
522 Generic PWM framework driver for the PWM controller on ST
523 SPEAr SoCs.
524
525 To compile this driver as a module, choose M here: the module
526 will be called pwm-spear.
527
528config PWM_SPRD
529 tristate "Spreadtrum PWM support"
530 depends on ARCH_SPRD || COMPILE_TEST
531 depends on HAS_IOMEM
532 help
533 Generic PWM framework driver for the PWM controller on
534 Spreadtrum SoCs.
535
536 To compile this driver as a module, choose M here: the module
537 will be called pwm-sprd.
538
539config PWM_STI
540 tristate "STiH4xx PWM support"
541 depends on ARCH_STI || COMPILE_TEST
542 depends on HAS_IOMEM && OF
543 help
544 Generic PWM framework driver for STiH4xx SoCs.
545
546 To compile this driver as a module, choose M here: the module
547 will be called pwm-sti.
548
549config PWM_STM32
550 tristate "STMicroelectronics STM32 PWM"
551 depends on MFD_STM32_TIMERS || COMPILE_TEST
552 help
553 Generic PWM framework driver for STM32 SoCs.
554
555 To compile this driver as a module, choose M here: the module
556 will be called pwm-stm32.
557
558config PWM_STM32_LP
559 tristate "STMicroelectronics STM32 PWM LP"
560 depends on MFD_STM32_LPTIMER || COMPILE_TEST
561 help
562 Generic PWM framework driver for STMicroelectronics STM32 SoCs
563 with Low-Power Timer (LPTIM).
564
565 To compile this driver as a module, choose M here: the module
566 will be called pwm-stm32-lp.
567
568config PWM_STMPE
569 bool "STMPE expander PWM export"
570 depends on MFD_STMPE
571 help
572 This enables support for the PWMs found in the STMPE I/O
573 expanders.
574
575config PWM_SUN4I
576 tristate "Allwinner PWM support"
577 depends on ARCH_SUNXI || COMPILE_TEST
578 depends on HAS_IOMEM && COMMON_CLK
579 help
580 Generic PWM framework driver for Allwinner SoCs.
581
582 To compile this driver as a module, choose M here: the module
583 will be called pwm-sun4i.
584
585config PWM_SUNPLUS
586 tristate "Sunplus PWM support"
587 depends on ARCH_SUNPLUS || COMPILE_TEST
588 depends on HAS_IOMEM && OF
589 help
590 Generic PWM framework driver for the PWM controller on
591 Sunplus SoCs.
592
593 To compile this driver as a module, choose M here: the module
594 will be called pwm-sunplus.
595
596config PWM_TEGRA
597 tristate "NVIDIA Tegra PWM support"
598 depends on ARCH_TEGRA || COMPILE_TEST
599 depends on HAS_IOMEM
600 help
601 Generic PWM framework driver for the PWFM controller found on NVIDIA
602 Tegra SoCs.
603
604 To compile this driver as a module, choose M here: the module
605 will be called pwm-tegra.
606
607config PWM_TIECAP
608 tristate "ECAP PWM support"
609 depends on ARCH_OMAP2PLUS || ARCH_DAVINCI_DA8XX || ARCH_KEYSTONE || ARCH_K3 || COMPILE_TEST
610 depends on HAS_IOMEM
611 help
612 PWM driver support for the ECAP APWM controller found on TI SOCs
613
614 To compile this driver as a module, choose M here: the module
615 will be called pwm-tiecap.
616
617config PWM_TIEHRPWM
618 tristate "EHRPWM PWM support"
619 depends on ARCH_OMAP2PLUS || ARCH_DAVINCI_DA8XX || ARCH_K3 || COMPILE_TEST
620 depends on HAS_IOMEM
621 help
622 PWM driver support for the EHRPWM controller found on TI SOCs
623
624 To compile this driver as a module, choose M here: the module
625 will be called pwm-tiehrpwm.
626
627config PWM_TWL
628 tristate "TWL4030/6030 PWM support"
629 depends on TWL4030_CORE
630 help
631 Generic PWM framework driver for TWL4030/6030.
632
633 To compile this driver as a module, choose M here: the module
634 will be called pwm-twl.
635
636config PWM_TWL_LED
637 tristate "TWL4030/6030 PWM support for LED drivers"
638 depends on TWL4030_CORE
639 help
640 Generic PWM framework driver for TWL4030/6030 LED terminals.
641
642 To compile this driver as a module, choose M here: the module
643 will be called pwm-twl-led.
644
645config PWM_VISCONTI
646 tristate "Toshiba Visconti PWM support"
647 depends on ARCH_VISCONTI || COMPILE_TEST
648 help
649 PWM Subsystem driver support for Toshiba Visconti SoCs.
650
651 To compile this driver as a module, choose M here: the module
652 will be called pwm-visconti.
653
654config PWM_VT8500
655 tristate "vt8500 PWM support"
656 depends on ARCH_VT8500 || COMPILE_TEST
657 depends on HAS_IOMEM
658 help
659 Generic PWM framework driver for vt8500.
660
661 To compile this driver as a module, choose M here: the module
662 will be called pwm-vt8500.
663
664config PWM_XILINX
665 tristate "Xilinx AXI Timer PWM support"
666 depends on OF_ADDRESS
667 depends on COMMON_CLK
668 select REGMAP_MMIO
669 help
670 PWM driver for Xilinx LogiCORE IP AXI timers. This timer is
671 typically a soft core which may be present in Xilinx FPGAs.
672 This device may also be present in Microblaze soft processors.
673 If you don't have this IP in your design, choose N.
674
675 To compile this driver as a module, choose M here: the module
676 will be called pwm-xilinx.
677
678endif
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_AB8500
37 tristate "AB8500 PWM support"
38 depends on AB8500_CORE && ARCH_U8500
39 help
40 Generic PWM framework driver for Analog Baseband AB8500.
41
42 To compile this driver as a module, choose M here: the module
43 will be called pwm-ab8500.
44
45config PWM_ATMEL
46 tristate "Atmel PWM support"
47 depends on ARCH_AT91 && OF
48 help
49 Generic PWM framework driver for Atmel SoC.
50
51 To compile this driver as a module, choose M here: the module
52 will be called pwm-atmel.
53
54config PWM_ATMEL_HLCDC_PWM
55 tristate "Atmel HLCDC PWM support"
56 depends on MFD_ATMEL_HLCDC
57 depends on HAVE_CLK
58 help
59 Generic PWM framework driver for the PWM output of the HLCDC
60 (Atmel High-end LCD Controller). This PWM output is mainly used
61 to control the LCD backlight.
62
63 To compile this driver as a module, choose M here: the module
64 will be called pwm-atmel-hlcdc.
65
66config PWM_ATMEL_TCB
67 tristate "Atmel TC Block PWM support"
68 depends on ATMEL_TCLIB && OF
69 help
70 Generic PWM framework driver for Atmel Timer Counter Block.
71
72 A Timer Counter Block provides 6 PWM devices grouped by 2.
73 Devices in a given group must have the same period.
74
75 To compile this driver as a module, choose M here: the module
76 will be called pwm-atmel-tcb.
77
78config PWM_BCM_IPROC
79 tristate "iProc PWM support"
80 depends on ARCH_BCM_IPROC || COMPILE_TEST
81 depends on COMMON_CLK
82 default ARCH_BCM_IPROC
83 help
84 Generic PWM framework driver for Broadcom iProc PWM block. This
85 block is used in Broadcom iProc SoC's.
86
87 To compile this driver as a module, choose M here: the module
88 will be called pwm-bcm-iproc.
89
90config PWM_BCM_KONA
91 tristate "Kona PWM support"
92 depends on ARCH_BCM_MOBILE || ARCH_BCM_CYGNUS || COMPILE_TEST
93 depends on HAVE_CLK && HAS_IOMEM
94 default ARCH_BCM_MOBILE || ARCH_BCM_CYGNUS
95 help
96 Generic PWM framework driver for Broadcom Kona PWM block.
97
98 To compile this driver as a module, choose M here: the module
99 will be called pwm-bcm-kona.
100
101config PWM_BCM2835
102 tristate "BCM2835 PWM support"
103 depends on ARCH_BCM2835
104 help
105 PWM framework driver for BCM2835 controller (Raspberry Pi)
106
107 To compile this driver as a module, choose M here: the module
108 will be called pwm-bcm2835.
109
110config PWM_BERLIN
111 tristate "Marvell Berlin PWM support"
112 depends on ARCH_BERLIN
113 help
114 PWM framework driver for Marvell Berlin SoCs.
115
116 To compile this driver as a module, choose M here: the module
117 will be called pwm-berlin.
118
119config PWM_BRCMSTB
120 tristate "Broadcom STB PWM support"
121 depends on ARCH_BRCMSTB || BMIPS_GENERIC
122 help
123 Generic PWM framework driver for the Broadcom Set-top-Box
124 SoCs (BCM7xxx).
125
126 To compile this driver as a module, choose M Here: the module
127 will be called pwm-brcmstb.c.
128
129config PWM_CLPS711X
130 tristate "CLPS711X PWM support"
131 depends on ARCH_CLPS711X || COMPILE_TEST
132 depends on HAS_IOMEM
133 help
134 Generic PWM framework driver for Cirrus Logic CLPS711X.
135
136 To compile this driver as a module, choose M here: the module
137 will be called pwm-clps711x.
138
139config PWM_CRC
140 bool "Intel Crystalcove (CRC) PWM support"
141 depends on X86 && INTEL_SOC_PMIC
142 help
143 Generic PWM framework driver for Crystalcove (CRC) PMIC based PWM
144 control.
145
146config PWM_CROS_EC
147 tristate "ChromeOS EC PWM driver"
148 depends on CROS_EC
149 help
150 PWM driver for exposing a PWM attached to the ChromeOS Embedded
151 Controller.
152
153config PWM_EP93XX
154 tristate "Cirrus Logic EP93xx PWM support"
155 depends on ARCH_EP93XX
156 help
157 Generic PWM framework driver for Cirrus Logic EP93xx.
158
159 To compile this driver as a module, choose M here: the module
160 will be called pwm-ep93xx.
161
162config PWM_FSL_FTM
163 tristate "Freescale FlexTimer Module (FTM) PWM support"
164 depends on HAS_IOMEM
165 depends on OF
166 select REGMAP_MMIO
167 help
168 Generic FTM PWM framework driver for Freescale VF610 and
169 Layerscape LS-1 SoCs.
170
171 To compile this driver as a module, choose M here: the module
172 will be called pwm-fsl-ftm.
173
174config PWM_HIBVT
175 tristate "HiSilicon BVT PWM support"
176 depends on ARCH_HISI || COMPILE_TEST
177 help
178 Generic PWM framework driver for HiSilicon BVT SoCs.
179
180 To compile this driver as a module, choose M here: the module
181 will be called pwm-hibvt.
182
183config PWM_IMG
184 tristate "Imagination Technologies PWM driver"
185 depends on HAS_IOMEM
186 depends on MFD_SYSCON
187 depends on COMMON_CLK
188 depends on MIPS || COMPILE_TEST
189 help
190 Generic PWM framework driver for Imagination Technologies
191 PWM block which supports 4 channels.
192
193 To compile this driver as a module, choose M here: the module
194 will be called pwm-img
195
196config PWM_IMX1
197 tristate "i.MX1 PWM support"
198 depends on ARCH_MXC
199 help
200 Generic PWM framework driver for i.MX1 and i.MX21
201
202 To compile this driver as a module, choose M here: the module
203 will be called pwm-imx1.
204
205config PWM_IMX27
206 tristate "i.MX27 PWM support"
207 depends on ARCH_MXC
208 help
209 Generic PWM framework driver for i.MX27 and later i.MX SoCs.
210
211 To compile this driver as a module, choose M here: the module
212 will be called pwm-imx27.
213
214config PWM_IMX_TPM
215 tristate "i.MX TPM PWM support"
216 depends on ARCH_MXC || COMPILE_TEST
217 depends on HAVE_CLK && HAS_IOMEM
218 help
219 Generic PWM framework driver for i.MX7ULP TPM module, TPM's full
220 name is Low Power Timer/Pulse Width Modulation Module.
221
222 To compile this driver as a module, choose M here: the module
223 will be called pwm-imx-tpm.
224
225config PWM_JZ4740
226 tristate "Ingenic JZ47xx PWM support"
227 depends on MACH_INGENIC
228 help
229 Generic PWM framework driver for Ingenic JZ47xx based
230 machines.
231
232 To compile this driver as a module, choose M here: the module
233 will be called pwm-jz4740.
234
235config PWM_LP3943
236 tristate "TI/National Semiconductor LP3943 PWM support"
237 depends on MFD_LP3943
238 help
239 Generic PWM framework driver for LP3943 which supports two PWM
240 channels.
241
242 To compile this driver as a module, choose M here: the module
243 will be called pwm-lp3943.
244
245config PWM_LPC18XX_SCT
246 tristate "LPC18xx/43xx PWM/SCT support"
247 depends on ARCH_LPC18XX
248 help
249 Generic PWM framework driver for NXP LPC18xx PWM/SCT which
250 supports 16 channels.
251 A maximum of 15 channels can be requested simultaneously and
252 must have the same period.
253
254 To compile this driver as a module, choose M here: the module
255 will be called pwm-lpc18xx-sct.
256
257config PWM_LPC32XX
258 tristate "LPC32XX PWM support"
259 depends on ARCH_LPC32XX
260 help
261 Generic PWM framework driver for LPC32XX. The LPC32XX SOC has two
262 PWM controllers.
263
264 To compile this driver as a module, choose M here: the module
265 will be called pwm-lpc32xx.
266
267config PWM_LPSS
268 tristate
269
270config PWM_LPSS_PCI
271 tristate "Intel LPSS PWM PCI driver"
272 depends on X86 && PCI
273 select PWM_LPSS
274 help
275 The PCI driver for Intel Low Power Subsystem PWM controller.
276
277 To compile this driver as a module, choose M here: the module
278 will be called pwm-lpss-pci.
279
280config PWM_LPSS_PLATFORM
281 tristate "Intel LPSS PWM platform driver"
282 depends on X86 && ACPI
283 select PWM_LPSS
284 help
285 The platform driver for Intel Low Power Subsystem PWM controller.
286
287 To compile this driver as a module, choose M here: the module
288 will be called pwm-lpss-platform.
289
290config PWM_MESON
291 tristate "Amlogic Meson PWM driver"
292 depends on ARCH_MESON
293 help
294 The platform driver for Amlogic Meson PWM controller.
295
296 To compile this driver as a module, choose M here: the module
297 will be called pwm-meson.
298
299config PWM_MTK_DISP
300 tristate "MediaTek display PWM driver"
301 depends on ARCH_MEDIATEK || COMPILE_TEST
302 depends on HAS_IOMEM
303 help
304 Generic PWM framework driver for MediaTek disp-pwm device.
305 The PWM is used to control the backlight brightness for display.
306
307 To compile this driver as a module, choose M here: the module
308 will be called pwm-mtk-disp.
309
310config PWM_MEDIATEK
311 tristate "MediaTek PWM support"
312 depends on ARCH_MEDIATEK || RALINK || COMPILE_TEST
313 help
314 Generic PWM framework driver for Mediatek ARM SoC.
315
316 To compile this driver as a module, choose M here: the module
317 will be called pwm-mediatek.
318
319config PWM_MXS
320 tristate "Freescale MXS PWM support"
321 depends on ARCH_MXS && OF
322 select STMP_DEVICE
323 help
324 Generic PWM framework driver for Freescale MXS.
325
326 To compile this driver as a module, choose M here: the module
327 will be called pwm-mxs.
328
329config PWM_OMAP_DMTIMER
330 tristate "OMAP Dual-Mode Timer PWM support"
331 depends on OF && ARCH_OMAP && OMAP_DM_TIMER
332 help
333 Generic PWM framework driver for OMAP Dual-Mode Timer PWM output
334
335 To compile this driver as a module, choose M here: the module
336 will be called pwm-omap-dmtimer
337
338config PWM_PCA9685
339 tristate "NXP PCA9685 PWM driver"
340 depends on I2C
341 select REGMAP_I2C
342 help
343 Generic PWM framework driver for NXP PCA9685 LED controller.
344
345 To compile this driver as a module, choose M here: the module
346 will be called pwm-pca9685.
347
348config PWM_PUV3
349 tristate "PKUnity NetBook-0916 PWM support"
350 depends on ARCH_PUV3
351 help
352 Generic PWM framework driver for PKUnity NetBook-0916.
353
354 To compile this driver as a module, choose M here: the module
355 will be called pwm-puv3.
356
357config PWM_PXA
358 tristate "PXA PWM support"
359 depends on ARCH_PXA
360 help
361 Generic PWM framework driver for PXA.
362
363 To compile this driver as a module, choose M here: the module
364 will be called pwm-pxa.
365
366config PWM_RCAR
367 tristate "Renesas R-Car PWM support"
368 depends on ARCH_RENESAS || COMPILE_TEST
369 depends on HAS_IOMEM
370 help
371 This driver exposes the PWM Timer controller found in Renesas
372 R-Car chips through the PWM API.
373
374 To compile this driver as a module, choose M here: the module
375 will be called pwm-rcar.
376
377config PWM_RENESAS_TPU
378 tristate "Renesas TPU PWM support"
379 depends on ARCH_RENESAS || COMPILE_TEST
380 depends on HAS_IOMEM
381 help
382 This driver exposes the Timer Pulse Unit (TPU) PWM controller found
383 in Renesas chips through the PWM API.
384
385 To compile this driver as a module, choose M here: the module
386 will be called pwm-renesas-tpu.
387
388config PWM_ROCKCHIP
389 tristate "Rockchip PWM support"
390 depends on ARCH_ROCKCHIP
391 help
392 Generic PWM framework driver for the PWM controller found on
393 Rockchip SoCs.
394
395config PWM_SAMSUNG
396 tristate "Samsung PWM support"
397 depends on PLAT_SAMSUNG || ARCH_EXYNOS
398 help
399 Generic PWM framework driver for Samsung.
400
401 To compile this driver as a module, choose M here: the module
402 will be called pwm-samsung.
403
404config PWM_SIFIVE
405 tristate "SiFive PWM support"
406 depends on OF
407 depends on COMMON_CLK
408 depends on RISCV || COMPILE_TEST
409 help
410 Generic PWM framework driver for SiFive SoCs.
411
412 To compile this driver as a module, choose M here: the module
413 will be called pwm-sifive.
414
415config PWM_SPEAR
416 tristate "STMicroelectronics SPEAr PWM support"
417 depends on PLAT_SPEAR
418 depends on OF
419 help
420 Generic PWM framework driver for the PWM controller on ST
421 SPEAr SoCs.
422
423 To compile this driver as a module, choose M here: the module
424 will be called pwm-spear.
425
426config PWM_SPRD
427 tristate "Spreadtrum PWM support"
428 depends on ARCH_SPRD || COMPILE_TEST
429 depends on HAS_IOMEM
430 help
431 Generic PWM framework driver for the PWM controller on
432 Spreadtrum SoCs.
433
434 To compile this driver as a module, choose M here: the module
435 will be called pwm-sprd.
436
437config PWM_STI
438 tristate "STiH4xx PWM support"
439 depends on ARCH_STI
440 depends on OF
441 help
442 Generic PWM framework driver for STiH4xx SoCs.
443
444 To compile this driver as a module, choose M here: the module
445 will be called pwm-sti.
446
447config PWM_STM32
448 tristate "STMicroelectronics STM32 PWM"
449 depends on MFD_STM32_TIMERS
450 help
451 Generic PWM framework driver for STM32 SoCs.
452
453 To compile this driver as a module, choose M here: the module
454 will be called pwm-stm32.
455
456config PWM_STM32_LP
457 tristate "STMicroelectronics STM32 PWM LP"
458 depends on MFD_STM32_LPTIMER || COMPILE_TEST
459 help
460 Generic PWM framework driver for STMicroelectronics STM32 SoCs
461 with Low-Power Timer (LPTIM).
462
463 To compile this driver as a module, choose M here: the module
464 will be called pwm-stm32-lp.
465
466config PWM_STMPE
467 bool "STMPE expander PWM export"
468 depends on MFD_STMPE
469 help
470 This enables support for the PWMs found in the STMPE I/O
471 expanders.
472
473config PWM_SUN4I
474 tristate "Allwinner PWM support"
475 depends on ARCH_SUNXI || COMPILE_TEST
476 depends on HAS_IOMEM && COMMON_CLK
477 help
478 Generic PWM framework driver for Allwinner SoCs.
479
480 To compile this driver as a module, choose M here: the module
481 will be called pwm-sun4i.
482
483config PWM_TEGRA
484 tristate "NVIDIA Tegra PWM support"
485 depends on ARCH_TEGRA
486 help
487 Generic PWM framework driver for the PWFM controller found on NVIDIA
488 Tegra SoCs.
489
490 To compile this driver as a module, choose M here: the module
491 will be called pwm-tegra.
492
493config PWM_TIECAP
494 tristate "ECAP PWM support"
495 depends on ARCH_OMAP2PLUS || ARCH_DAVINCI_DA8XX || ARCH_KEYSTONE || ARCH_K3
496 help
497 PWM driver support for the ECAP APWM controller found on TI SOCs
498
499 To compile this driver as a module, choose M here: the module
500 will be called pwm-tiecap.
501
502config PWM_TIEHRPWM
503 tristate "EHRPWM PWM support"
504 depends on ARCH_OMAP2PLUS || ARCH_DAVINCI_DA8XX || ARCH_K3
505 help
506 PWM driver support for the EHRPWM controller found on TI SOCs
507
508 To compile this driver as a module, choose M here: the module
509 will be called pwm-tiehrpwm.
510
511config PWM_TIPWMSS
512 bool
513 default y if (ARCH_OMAP2PLUS) && (PWM_TIECAP || PWM_TIEHRPWM)
514 help
515 PWM Subsystem driver support for AM33xx SOC.
516
517 PWM submodules require PWM config space access from submodule
518 drivers and require common parent driver support.
519
520config PWM_TWL
521 tristate "TWL4030/6030 PWM support"
522 depends on TWL4030_CORE
523 help
524 Generic PWM framework driver for TWL4030/6030.
525
526 To compile this driver as a module, choose M here: the module
527 will be called pwm-twl.
528
529config PWM_TWL_LED
530 tristate "TWL4030/6030 PWM support for LED drivers"
531 depends on TWL4030_CORE
532 help
533 Generic PWM framework driver for TWL4030/6030 LED terminals.
534
535 To compile this driver as a module, choose M here: the module
536 will be called pwm-twl-led.
537
538config PWM_VT8500
539 tristate "vt8500 PWM support"
540 depends on ARCH_VT8500
541 help
542 Generic PWM framework driver for vt8500.
543
544 To compile this driver as a module, choose M here: the module
545 will be called pwm-vt8500.
546
547config PWM_ZX
548 tristate "ZTE ZX PWM support"
549 depends on ARCH_ZX
550 help
551 Generic PWM framework driver for ZTE ZX family SoCs.
552
553 To compile this driver as a module, choose M here: the module
554 will be called pwm-zx.
555
556endif