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 "CLPS711X PWM support"
115 depends on ARCH_CLPS711X || COMPILE_TEST
118 Generic PWM framework driver for Cirrus Logic CLPS711X.
120 To compile this driver as a module, choose M here: the module
121 will be called pwm-clps711x.
124 bool "Intel Crystalcove (CRC) PWM support"
125 depends on X86 && INTEL_SOC_PMIC
127 Generic PWM framework driver for Crystalcove (CRC) PMIC based PWM
131 tristate "Cirrus Logic EP93xx PWM support"
132 depends on ARCH_EP93XX
134 Generic PWM framework driver for Cirrus Logic EP93xx.
136 To compile this driver as a module, choose M here: the module
137 will be called pwm-ep93xx.
140 tristate "Freescale FlexTimer Module (FTM) PWM support"
144 Generic FTM PWM framework driver for Freescale VF610 and
145 Layerscape LS-1 SoCs.
147 To compile this driver as a module, choose M here: the module
148 will be called pwm-fsl-ftm.
151 tristate "Imagination Technologies PWM driver"
153 depends on MFD_SYSCON
154 depends on COMMON_CLK
155 depends on MIPS || COMPILE_TEST
157 Generic PWM framework driver for Imagination Technologies
158 PWM block which supports 4 channels.
160 To compile this driver as a module, choose M here: the module
161 will be called pwm-img
164 tristate "i.MX PWM support"
167 Generic PWM framework driver for i.MX.
169 To compile this driver as a module, choose M here: the module
170 will be called pwm-imx.
173 tristate "Ingenic JZ4740 PWM support"
174 depends on MACH_JZ4740
176 Generic PWM framework driver for Ingenic JZ4740 based
179 To compile this driver as a module, choose M here: the module
180 will be called pwm-jz4740.
183 tristate "TI/National Semiconductor LP3943 PWM support"
184 depends on MFD_LP3943
186 Generic PWM framework driver for LP3943 which supports two PWM
189 To compile this driver as a module, choose M here: the module
190 will be called pwm-lp3943.
192 config PWM_LPC18XX_SCT
193 tristate "LPC18xx/43xx PWM/SCT support"
194 depends on ARCH_LPC18XX
196 Generic PWM framework driver for NXP LPC18xx PWM/SCT which
197 supports 16 channels.
198 A maximum of 15 channels can be requested simultaneously and
199 must have the same period.
201 To compile this driver as a module, choose M here: the module
202 will be called pwm-lpc18xx-sct.
205 tristate "LPC32XX PWM support"
206 depends on ARCH_LPC32XX
208 Generic PWM framework driver for LPC32XX. The LPC32XX SOC has two
211 To compile this driver as a module, choose M here: the module
212 will be called pwm-lpc32xx.
215 tristate "Intel LPSS PWM support"
218 Generic PWM framework driver for Intel Low Power Subsystem PWM
221 To compile this driver as a module, choose M here: the module
222 will be called pwm-lpss.
225 tristate "Intel LPSS PWM PCI driver"
226 depends on PWM_LPSS && PCI
228 The PCI driver for Intel Low Power Subsystem PWM controller.
230 To compile this driver as a module, choose M here: the module
231 will be called pwm-lpss-pci.
233 config PWM_LPSS_PLATFORM
234 tristate "Intel LPSS PWM platform driver"
235 depends on PWM_LPSS && ACPI
237 The platform driver for Intel Low Power Subsystem PWM controller.
239 To compile this driver as a module, choose M here: the module
240 will be called pwm-lpss-platform.
243 tristate "Freescale MXS PWM support"
244 depends on ARCH_MXS && OF
247 Generic PWM framework driver for Freescale MXS.
249 To compile this driver as a module, choose M here: the module
250 will be called pwm-mxs.
253 tristate "NXP PCA9685 PWM driver"
257 Generic PWM framework driver for NXP PCA9685 LED controller.
259 To compile this driver as a module, choose M here: the module
260 will be called pwm-pca9685.
263 tristate "PKUnity NetBook-0916 PWM support"
266 Generic PWM framework driver for PKUnity NetBook-0916.
268 To compile this driver as a module, choose M here: the module
269 will be called pwm-puv3.
272 tristate "PXA PWM support"
275 Generic PWM framework driver for PXA.
277 To compile this driver as a module, choose M here: the module
278 will be called pwm-pxa.
281 tristate "Renesas R-Car PWM support"
282 depends on ARCH_RCAR_GEN1 || ARCH_RCAR_GEN2 || COMPILE_TEST
285 This driver exposes the PWM Timer controller found in Renesas
286 R-Car chips through the PWM API.
288 To compile this driver as a module, choose M here: the module
289 will be called pwm-rcar.
291 config PWM_RENESAS_TPU
292 tristate "Renesas TPU PWM support"
293 depends on ARCH_SHMOBILE || COMPILE_TEST
296 This driver exposes the Timer Pulse Unit (TPU) PWM controller found
297 in Renesas chips through the PWM API.
299 To compile this driver as a module, choose M here: the module
300 will be called pwm-renesas-tpu.
303 tristate "Rockchip PWM support"
304 depends on ARCH_ROCKCHIP
306 Generic PWM framework driver for the PWM controller found on
310 tristate "Samsung PWM support"
311 depends on PLAT_SAMSUNG || ARCH_EXYNOS
313 Generic PWM framework driver for Samsung.
315 To compile this driver as a module, choose M here: the module
316 will be called pwm-samsung.
319 tristate "STMicroelectronics SPEAr PWM support"
320 depends on PLAT_SPEAR
323 Generic PWM framework driver for the PWM controller on ST
326 To compile this driver as a module, choose M here: the module
327 will be called pwm-spear.
330 tristate "STiH4xx PWM support"
334 Generic PWM framework driver for STiH4xx SoCs.
336 To compile this driver as a module, choose M here: the module
337 will be called pwm-sti.
340 tristate "Allwinner PWM support"
341 depends on ARCH_SUNXI || COMPILE_TEST
342 depends on HAS_IOMEM && COMMON_CLK
344 Generic PWM framework driver for Allwinner SoCs.
346 To compile this driver as a module, choose M here: the module
347 will be called pwm-sun4i.
350 tristate "NVIDIA Tegra PWM support"
351 depends on ARCH_TEGRA
353 Generic PWM framework driver for the PWFM controller found on NVIDIA
356 To compile this driver as a module, choose M here: the module
357 will be called pwm-tegra.
360 tristate "ECAP PWM support"
361 depends on SOC_AM33XX || ARCH_DAVINCI_DA8XX
363 PWM driver support for the ECAP APWM controller found on AM33XX
366 To compile this driver as a module, choose M here: the module
367 will be called pwm-tiecap.
370 tristate "EHRPWM PWM support"
371 depends on SOC_AM33XX || ARCH_DAVINCI_DA8XX
373 PWM driver support for the EHRPWM controller found on AM33XX
376 To compile this driver as a module, choose M here: the module
377 will be called pwm-tiehrpwm.
381 default y if SOC_AM33XX && (PWM_TIECAP || PWM_TIEHRPWM)
383 PWM Subsystem driver support for AM33xx SOC.
385 PWM submodules require PWM config space access from submodule
386 drivers and require common parent driver support.
389 tristate "TWL4030/6030 PWM support"
390 depends on TWL4030_CORE
392 Generic PWM framework driver for TWL4030/6030.
394 To compile this driver as a module, choose M here: the module
395 will be called pwm-twl.
398 tristate "TWL4030/6030 PWM support for LED drivers"
399 depends on TWL4030_CORE
401 Generic PWM framework driver for TWL4030/6030 LED terminals.
403 To compile this driver as a module, choose M here: the module
404 will be called pwm-twl-led.
407 tristate "vt8500 PWM support"
408 depends on ARCH_VT8500
410 Generic PWM framework driver for vt8500.
412 To compile this driver as a module, choose M here: the module
413 will be called pwm-vt8500.