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Linux/drivers/pwm/Kconfig

  1 menuconfig 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 
 29 if PWM
 30 
 31 config PWM_SYSFS
 32         bool
 33         default y if SYSFS
 34 
 35 config 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 
 44 config 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 
 53 config PWM_ATMEL_TCB
 54         tristate "Atmel TC Block PWM support"
 55         depends on ATMEL_TCLIB && OF
 56         help
 57           Generic PWM framework driver for Atmel Timer Counter Block.
 58 
 59           A Timer Counter Block provides 6 PWM devices grouped by 2.
 60           Devices in a given group must have the same period.
 61 
 62           To compile this driver as a module, choose M here: the module
 63           will be called pwm-atmel-tcb.
 64 
 65 config PWM_BFIN
 66         tristate "Blackfin PWM support"
 67         depends on BFIN_GPTIMERS
 68         help
 69           Generic PWM framework driver for Blackfin.
 70 
 71           To compile this driver as a module, choose M here: the module
 72           will be called pwm-bfin.
 73 
 74 config PWM_EP93XX
 75         tristate "Cirrus Logic EP93xx PWM support"
 76         depends on ARCH_EP93XX
 77         help
 78           Generic PWM framework driver for Cirrus Logic EP93xx.
 79 
 80           To compile this driver as a module, choose M here: the module
 81           will be called pwm-ep93xx.
 82 
 83 config PWM_IMX
 84         tristate "i.MX PWM support"
 85         depends on ARCH_MXC
 86         help
 87           Generic PWM framework driver for i.MX.
 88 
 89           To compile this driver as a module, choose M here: the module
 90           will be called pwm-imx.
 91 
 92 config PWM_JZ4740
 93         tristate "Ingenic JZ4740 PWM support"
 94         depends on MACH_JZ4740
 95         help
 96           Generic PWM framework driver for Ingenic JZ4740 based
 97           machines.
 98 
 99           To compile this driver as a module, choose M here: the module
100           will be called pwm-jz4740.
101 
102 config PWM_LP3943
103         tristate "TI/National Semiconductor LP3943 PWM support"
104         depends on MFD_LP3943
105         help
106           Generic PWM framework driver for LP3943 which supports two PWM
107           channels.
108 
109           To compile this driver as a module, choose M here: the module
110           will be called pwm-lp3943.
111 
112 config PWM_LPC32XX
113         tristate "LPC32XX PWM support"
114         depends on ARCH_LPC32XX
115         help
116           Generic PWM framework driver for LPC32XX. The LPC32XX SOC has two
117           PWM controllers.
118 
119           To compile this driver as a module, choose M here: the module
120           will be called pwm-lpc32xx.
121 
122 config PWM_MXS
123         tristate "Freescale MXS PWM support"
124         depends on ARCH_MXS && OF
125         select STMP_DEVICE
126         help
127           Generic PWM framework driver for Freescale MXS.
128 
129           To compile this driver as a module, choose M here: the module
130           will be called pwm-mxs.
131 
132 config PWM_PCA9685
133         tristate "NXP PCA9685 PWM driver"
134         depends on OF && I2C
135         select REGMAP_I2C
136         help
137           Generic PWM framework driver for NXP PCA9685 LED controller.
138 
139           To compile this driver as a module, choose M here: the module
140           will be called pwm-pca9685.
141 
142 config PWM_PUV3
143         tristate "PKUnity NetBook-0916 PWM support"
144         depends on ARCH_PUV3
145         help
146           Generic PWM framework driver for PKUnity NetBook-0916.
147 
148           To compile this driver as a module, choose M here: the module
149           will be called pwm-puv3.
150 
151 config PWM_PXA
152         tristate "PXA PWM support"
153         depends on ARCH_PXA
154         help
155           Generic PWM framework driver for PXA.
156 
157           To compile this driver as a module, choose M here: the module
158           will be called pwm-pxa.
159 
160 config PWM_RENESAS_TPU
161         tristate "Renesas TPU PWM support"
162         depends on ARCH_SHMOBILE || COMPILE_TEST
163         help
164           This driver exposes the Timer Pulse Unit (TPU) PWM controller found
165           in Renesas chips through the PWM API.
166 
167           To compile this driver as a module, choose M here: the module
168           will be called pwm-renesas-tpu.
169 
170 config PWM_SAMSUNG
171         tristate "Samsung PWM support"
172         depends on PLAT_SAMSUNG
173         help
174           Generic PWM framework driver for Samsung.
175 
176           To compile this driver as a module, choose M here: the module
177           will be called pwm-samsung.
178 
179 config PWM_SPEAR
180         tristate "STMicroelectronics SPEAr PWM support"
181         depends on PLAT_SPEAR
182         depends on OF
183         help
184           Generic PWM framework driver for the PWM controller on ST
185           SPEAr SoCs.
186 
187           To compile this driver as a module, choose M here: the module
188           will be called pwm-spear.
189 
190 config PWM_TEGRA
191         tristate "NVIDIA Tegra PWM support"
192         depends on ARCH_TEGRA
193         help
194           Generic PWM framework driver for the PWFM controller found on NVIDIA
195           Tegra SoCs.
196 
197           To compile this driver as a module, choose M here: the module
198           will be called pwm-tegra.
199 
200 config  PWM_TIECAP
201         tristate "ECAP PWM support"
202         depends on SOC_AM33XX || ARCH_DAVINCI_DA8XX
203         help
204           PWM driver support for the ECAP APWM controller found on AM33XX
205           TI SOC
206 
207           To compile this driver as a module, choose M here: the module
208           will be called pwm-tiecap.
209 
210 config  PWM_TIEHRPWM
211         tristate "EHRPWM PWM support"
212         depends on SOC_AM33XX || ARCH_DAVINCI_DA8XX
213         help
214           PWM driver support for the EHRPWM controller found on AM33XX
215           TI SOC
216 
217           To compile this driver as a module, choose M here: the module
218           will be called pwm-tiehrpwm.
219 
220 config  PWM_TIPWMSS
221         bool
222         default y if SOC_AM33XX && (PWM_TIECAP || PWM_TIEHRPWM)
223         help
224           PWM Subsystem driver support for AM33xx SOC.
225 
226           PWM submodules require PWM config space access from submodule
227           drivers and require common parent driver support.
228 
229 config PWM_TWL
230         tristate "TWL4030/6030 PWM support"
231         depends on TWL4030_CORE
232         help
233           Generic PWM framework driver for TWL4030/6030.
234 
235           To compile this driver as a module, choose M here: the module
236           will be called pwm-twl.
237 
238 config PWM_TWL_LED
239         tristate "TWL4030/6030 PWM support for LED drivers"
240         depends on TWL4030_CORE
241         help
242           Generic PWM framework driver for TWL4030/6030 LED terminals.
243 
244           To compile this driver as a module, choose M here: the module
245           will be called pwm-twl-led.
246 
247 config PWM_VT8500
248         tristate "vt8500 PWM support"
249         depends on ARCH_VT8500
250         help
251           Generic PWM framework driver for vt8500.
252 
253           To compile this driver as a module, choose M here: the module
254           will be called pwm-vt8500.
255 
256 endif

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