2 bool "Pulse-Width Modulation (PWM) Support"
4 Generic Pulse-Width Modulation (PWM) support.
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
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.
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.
36 tristate "AB8500 PWM support"
37 depends on AB8500_CORE && ARCH_U8500
39 Generic PWM framework driver for Analog Baseband AB8500.
41 To compile this driver as a module, choose M here: the module
42 will be called pwm-ab8500.
45 tristate "Atmel PWM support"
46 depends on ARCH_AT91 || AVR32
48 Generic PWM framework driver for Atmel SoC.
50 To compile this driver as a module, choose M here: the module
51 will be called pwm-atmel.
53 config PWM_ATMEL_HLCDC_PWM
54 tristate "Atmel HLCDC PWM support"
55 depends on MFD_ATMEL_HLCDC
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.
62 To compile this driver as a module, choose M here: the module
63 will be called pwm-atmel-hlcdc.
66 tristate "Atmel TC Block PWM support"
67 depends on ATMEL_TCLIB && OF
69 Generic PWM framework driver for Atmel Timer Counter Block.
71 A Timer Counter Block provides 6 PWM devices grouped by 2.
72 Devices in a given group must have the same period.
74 To compile this driver as a module, choose M here: the module
75 will be called pwm-atmel-tcb.
78 tristate "Kona PWM support"
79 depends on ARCH_BCM_MOBILE
81 Generic PWM framework driver for Broadcom Kona PWM block.
83 To compile this driver as a module, choose M here: the module
84 will be called pwm-bcm-kona.
87 tristate "BCM2835 PWM support"
88 depends on ARCH_BCM2835
90 PWM framework driver for BCM2835 controller (Raspberry Pi)
92 To compile this driver as a module, choose M here: the module
93 will be called pwm-bcm2835.
96 tristate "Marvell Berlin PWM support"
97 depends on ARCH_BERLIN
99 PWM framework driver for Marvell Berlin SoCs.
101 To compile this driver as a module, choose M here: the module
102 will be called pwm-berlin.
105 tristate "Blackfin PWM support"
106 depends on BFIN_GPTIMERS
108 Generic PWM framework driver for Blackfin.
110 To compile this driver as a module, choose M here: the module
111 will be called pwm-bfin.
114 tristate "Broadcom STB PWM support"
115 depends on ARCH_BRCMSTB || BMIPS_GENERIC
117 Generic PWM framework driver for the Broadcom Set-top-Box
120 To compile this driver as a module, choose M Here: the module
121 will be called pwm-brcmstb.c.
124 tristate "CLPS711X PWM support"
125 depends on ARCH_CLPS711X || COMPILE_TEST
128 Generic PWM framework driver for Cirrus Logic CLPS711X.
130 To compile this driver as a module, choose M here: the module
131 will be called pwm-clps711x.
134 bool "Intel Crystalcove (CRC) PWM support"
135 depends on X86 && INTEL_SOC_PMIC
137 Generic PWM framework driver for Crystalcove (CRC) PMIC based PWM
141 tristate "Cirrus Logic EP93xx PWM support"
142 depends on ARCH_EP93XX
144 Generic PWM framework driver for Cirrus Logic EP93xx.
146 To compile this driver as a module, choose M here: the module
147 will be called pwm-ep93xx.
150 tristate "Freescale FlexTimer Module (FTM) PWM support"
155 Generic FTM PWM framework driver for Freescale VF610 and
156 Layerscape LS-1 SoCs.
158 To compile this driver as a module, choose M here: the module
159 will be called pwm-fsl-ftm.
162 tristate "Imagination Technologies PWM driver"
164 depends on MFD_SYSCON
165 depends on COMMON_CLK
166 depends on MIPS || COMPILE_TEST
168 Generic PWM framework driver for Imagination Technologies
169 PWM block which supports 4 channels.
171 To compile this driver as a module, choose M here: the module
172 will be called pwm-img
175 tristate "i.MX PWM support"
178 Generic PWM framework driver for i.MX.
180 To compile this driver as a module, choose M here: the module
181 will be called pwm-imx.
184 tristate "Ingenic JZ4740 PWM support"
185 depends on MACH_JZ4740
187 Generic PWM framework driver for Ingenic JZ4740 based
190 To compile this driver as a module, choose M here: the module
191 will be called pwm-jz4740.
194 tristate "TI/National Semiconductor LP3943 PWM support"
195 depends on MFD_LP3943
197 Generic PWM framework driver for LP3943 which supports two PWM
200 To compile this driver as a module, choose M here: the module
201 will be called pwm-lp3943.
203 config PWM_LPC18XX_SCT
204 tristate "LPC18xx/43xx PWM/SCT support"
205 depends on ARCH_LPC18XX
207 Generic PWM framework driver for NXP LPC18xx PWM/SCT which
208 supports 16 channels.
209 A maximum of 15 channels can be requested simultaneously and
210 must have the same period.
212 To compile this driver as a module, choose M here: the module
213 will be called pwm-lpc18xx-sct.
216 tristate "LPC32XX PWM support"
217 depends on ARCH_LPC32XX
219 Generic PWM framework driver for LPC32XX. The LPC32XX SOC has two
222 To compile this driver as a module, choose M here: the module
223 will be called pwm-lpc32xx.
229 tristate "Intel LPSS PWM PCI driver"
230 depends on X86 && PCI
233 The PCI driver for Intel Low Power Subsystem PWM controller.
235 To compile this driver as a module, choose M here: the module
236 will be called pwm-lpss-pci.
238 config PWM_LPSS_PLATFORM
239 tristate "Intel LPSS PWM platform driver"
240 depends on X86 && ACPI
243 The platform driver for Intel Low Power Subsystem PWM controller.
245 To compile this driver as a module, choose M here: the module
246 will be called pwm-lpss-platform.
249 tristate "MediaTek display PWM driver"
250 depends on ARCH_MEDIATEK || COMPILE_TEST
253 Generic PWM framework driver for MediaTek disp-pwm device.
254 The PWM is used to control the backlight brightness for display.
256 To compile this driver as a module, choose M here: the module
257 will be called pwm-mtk-disp.
260 tristate "Freescale MXS PWM support"
261 depends on ARCH_MXS && OF
264 Generic PWM framework driver for Freescale MXS.
266 To compile this driver as a module, choose M here: the module
267 will be called pwm-mxs.
269 config PWM_OMAP_DMTIMER
270 tristate "OMAP Dual-Mode Timer PWM support"
271 depends on OF && ARCH_OMAP && OMAP_DM_TIMER
273 Generic PWM framework driver for OMAP Dual-Mode Timer PWM output
275 To compile this driver as a module, choose M here: the module
276 will be called pwm-omap-dmtimer
279 tristate "NXP PCA9685 PWM driver"
283 Generic PWM framework driver for NXP PCA9685 LED controller.
285 To compile this driver as a module, choose M here: the module
286 will be called pwm-pca9685.
289 tristate "PKUnity NetBook-0916 PWM support"
292 Generic PWM framework driver for PKUnity NetBook-0916.
294 To compile this driver as a module, choose M here: the module
295 will be called pwm-puv3.
298 tristate "PXA PWM support"
301 Generic PWM framework driver for PXA.
303 To compile this driver as a module, choose M here: the module
304 will be called pwm-pxa.
307 tristate "Renesas R-Car PWM support"
308 depends on ARCH_RCAR_GEN1 || ARCH_RCAR_GEN2 || COMPILE_TEST
311 This driver exposes the PWM Timer controller found in Renesas
312 R-Car chips through the PWM API.
314 To compile this driver as a module, choose M here: the module
315 will be called pwm-rcar.
317 config PWM_RENESAS_TPU
318 tristate "Renesas TPU PWM support"
319 depends on ARCH_RENESAS || COMPILE_TEST
322 This driver exposes the Timer Pulse Unit (TPU) PWM controller found
323 in Renesas chips through the PWM API.
325 To compile this driver as a module, choose M here: the module
326 will be called pwm-renesas-tpu.
329 tristate "Rockchip PWM support"
330 depends on ARCH_ROCKCHIP
332 Generic PWM framework driver for the PWM controller found on
336 tristate "Samsung PWM support"
337 depends on PLAT_SAMSUNG || ARCH_EXYNOS
339 Generic PWM framework driver for Samsung.
341 To compile this driver as a module, choose M here: the module
342 will be called pwm-samsung.
345 tristate "STMicroelectronics SPEAr PWM support"
346 depends on PLAT_SPEAR
349 Generic PWM framework driver for the PWM controller on ST
352 To compile this driver as a module, choose M here: the module
353 will be called pwm-spear.
356 tristate "STiH4xx PWM support"
360 Generic PWM framework driver for STiH4xx SoCs.
362 To compile this driver as a module, choose M here: the module
363 will be called pwm-sti.
366 tristate "Allwinner PWM support"
367 depends on ARCH_SUNXI || COMPILE_TEST
368 depends on HAS_IOMEM && COMMON_CLK
370 Generic PWM framework driver for Allwinner SoCs.
372 To compile this driver as a module, choose M here: the module
373 will be called pwm-sun4i.
376 tristate "NVIDIA Tegra PWM support"
377 depends on ARCH_TEGRA
379 Generic PWM framework driver for the PWFM controller found on NVIDIA
382 To compile this driver as a module, choose M here: the module
383 will be called pwm-tegra.
386 tristate "ECAP PWM support"
387 depends on ARCH_OMAP2PLUS || ARCH_DAVINCI_DA8XX
389 PWM driver support for the ECAP APWM controller found on AM33XX
392 To compile this driver as a module, choose M here: the module
393 will be called pwm-tiecap.
396 tristate "EHRPWM PWM support"
397 depends on ARCH_OMAP2PLUS || ARCH_DAVINCI_DA8XX
399 PWM driver support for the EHRPWM controller found on AM33XX
402 To compile this driver as a module, choose M here: the module
403 will be called pwm-tiehrpwm.
407 default y if (ARCH_OMAP2PLUS) && (PWM_TIECAP || PWM_TIEHRPWM)
409 PWM Subsystem driver support for AM33xx SOC.
411 PWM submodules require PWM config space access from submodule
412 drivers and require common parent driver support.
415 tristate "TWL4030/6030 PWM support"
416 depends on TWL4030_CORE
418 Generic PWM framework driver for TWL4030/6030.
420 To compile this driver as a module, choose M here: the module
421 will be called pwm-twl.
424 tristate "TWL4030/6030 PWM support for LED drivers"
425 depends on TWL4030_CORE
427 Generic PWM framework driver for TWL4030/6030 LED terminals.
429 To compile this driver as a module, choose M here: the module
430 will be called pwm-twl-led.
433 tristate "vt8500 PWM support"
434 depends on ARCH_VT8500
436 Generic PWM framework driver for vt8500.
438 To compile this driver as a module, choose M here: the module
439 will be called pwm-vt8500.