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Sascha Hauer0c2498f2011-01-28 09:40:40 +01001menuconfig PWM
Thierry Redingb817bf52012-08-16 08:01:21 +02002 bool "Pulse-Width Modulation (PWM) Support"
Sascha Hauer0c2498f2011-01-28 09:40:40 +01003 help
Thierry Redingb817bf52012-08-16 08:01:21 +02004 Generic Pulse-Width Modulation (PWM) support.
Sascha Hauer0c2498f2011-01-28 09:40:40 +01005
Thierry Redingb817bf52012-08-16 08:01:21 +02006 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.
Sascha Hauer0c2498f2011-01-28 09:40:40 +010028
29if PWM
30
H Hartley Sweeten76abbdde2013-06-11 10:38:59 -070031config PWM_SYSFS
32 bool
33 default y if SYSFS
34
Thierry Reding6173f8f2012-08-31 11:46:24 +020035config 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
Boris BREZILLON9421bade2013-01-08 16:36:42 +010044config PWM_ATMEL_TCB
Thierry Redingb133d2a2013-01-30 09:19:55 +010045 tristate "Atmel TC Block PWM support"
Boris BREZILLON9421bade2013-01-08 16:36:42 +010046 depends on ATMEL_TCLIB && OF
47 help
48 Generic PWM framework driver for Atmel Timer Counter Block.
49
50 A Timer Counter Block provides 6 PWM devices grouped by 2.
51 Devices in a given group must have the same period.
52
53 To compile this driver as a module, choose M here: the module
54 will be called pwm-atmel-tcb.
55
Thierry Redinga4315e32012-01-02 20:53:50 +010056config PWM_BFIN
57 tristate "Blackfin PWM support"
58 depends on BFIN_GPTIMERS
59 help
60 Generic PWM framework driver for Blackfin.
61
62 To compile this driver as a module, choose M here: the module
63 will be called pwm-bfin.
64
H Hartley Sweetena2308692013-10-15 18:40:03 -070065config PWM_EP93XX
66 tristate "Cirrus Logic EP93xx PWM support"
67 depends on ARCH_EP93XX
68 help
69 Generic PWM framework driver for Cirrus Logic EP93xx.
70
71 To compile this driver as a module, choose M here: the module
72 will be called pwm-ep93xx.
73
Sascha Hauer29693242012-03-15 10:04:35 +010074config PWM_IMX
Thierry Redingb133d2a2013-01-30 09:19:55 +010075 tristate "i.MX PWM support"
Sascha Hauer29693242012-03-15 10:04:35 +010076 depends on ARCH_MXC
77 help
78 Generic PWM framework driver for i.MX.
79
80 To compile this driver as a module, choose M here: the module
81 will be called pwm-imx.
82
Thierry Redingf6b8a572012-08-22 10:01:24 +020083config PWM_JZ4740
84 tristate "Ingenic JZ4740 PWM support"
85 depends on MACH_JZ4740
86 help
87 Generic PWM framework driver for Ingenic JZ4740 based
88 machines.
89
90 To compile this driver as a module, choose M here: the module
91 will be called pwm-jz4740.
92
Alexandre Pereira da Silva2132fa82012-07-10 11:38:10 -030093config PWM_LPC32XX
94 tristate "LPC32XX PWM support"
95 depends on ARCH_LPC32XX
96 help
97 Generic PWM framework driver for LPC32XX. The LPC32XX SOC has two
98 PWM controllers.
99
100 To compile this driver as a module, choose M here: the module
101 will be called pwm-lpc32xx.
102
Shawn Guo4dce82c2012-04-04 10:50:52 +0800103config PWM_MXS
104 tristate "Freescale MXS PWM support"
105 depends on ARCH_MXS && OF
Shawn Guo01bf32e2012-06-26 16:58:09 +0800106 select STMP_DEVICE
Shawn Guo4dce82c2012-04-04 10:50:52 +0800107 help
108 Generic PWM framework driver for Freescale MXS.
109
110 To compile this driver as a module, choose M here: the module
111 will be called pwm-mxs.
112
Steffen Trumtrar88b613e2013-05-30 09:50:12 +0200113config PWM_PCA9685
114 tristate "NXP PCA9685 PWM driver"
115 depends on OF && REGMAP_I2C
116 help
117 Generic PWM framework driver for NXP PCA9685 LED controller.
118
119 To compile this driver as a module, choose M here: the module
120 will be called pwm-pca9685.
121
Thierry Reding79c11b62012-08-31 08:29:24 +0200122config PWM_PUV3
123 tristate "PKUnity NetBook-0916 PWM support"
124 depends on ARCH_PUV3
125 help
126 Generic PWM framework driver for PKUnity NetBook-0916.
127
128 To compile this driver as a module, choose M here: the module
129 will be called pwm-puv3.
130
Thierry Reding17b2b472012-01-02 21:22:38 +0100131config PWM_PXA
132 tristate "PXA PWM support"
133 depends on ARCH_PXA
134 help
135 Generic PWM framework driver for PXA.
136
137 To compile this driver as a module, choose M here: the module
138 will be called pwm-pxa.
139
Laurent Pinchart99b82ab2013-06-13 18:54:44 +0200140config PWM_RENESAS_TPU
141 tristate "Renesas TPU PWM support"
142 depends on ARCH_SHMOBILE
143 help
144 This driver exposes the Timer Pulse Unit (TPU) PWM controller found
145 in Renesas chips through the PWM API.
146
147 To compile this driver as a module, choose M here: the module
148 will be called pwm-renesas-tpu.
149
Sascha Hauer215c29d2012-03-15 10:04:36 +0100150config PWM_SAMSUNG
Thierry Redingb133d2a2013-01-30 09:19:55 +0100151 tristate "Samsung PWM support"
Sascha Hauer215c29d2012-03-15 10:04:36 +0100152 depends on PLAT_SAMSUNG
153 help
154 Generic PWM framework driver for Samsung.
155
156 To compile this driver as a module, choose M here: the module
157 will be called pwm-samsung.
158
Shiraz Hashimce203642012-10-25 09:39:13 +0530159config PWM_SPEAR
160 tristate "STMicroelectronics SPEAr PWM support"
161 depends on PLAT_SPEAR
162 depends on OF
163 help
164 Generic PWM framework driver for the PWM controller on ST
165 SPEAr SoCs.
166
167 To compile this driver as a module, choose M here: the module
168 will be called pwm-spear.
169
Thierry Reding0134b932011-12-21 07:47:07 +0100170config PWM_TEGRA
171 tristate "NVIDIA Tegra PWM support"
172 depends on ARCH_TEGRA
173 help
174 Generic PWM framework driver for the PWFM controller found on NVIDIA
175 Tegra SoCs.
176
177 To compile this driver as a module, choose M here: the module
178 will be called pwm-tegra.
179
Philip, Avinash8e0cb052012-07-25 16:58:18 +0530180config PWM_TIECAP
181 tristate "ECAP PWM support"
Philip Avinash1bf0f202013-03-20 12:09:24 +0530182 depends on SOC_AM33XX || ARCH_DAVINCI_DA8XX
Philip, Avinash8e0cb052012-07-25 16:58:18 +0530183 help
184 PWM driver support for the ECAP APWM controller found on AM33XX
185 TI SOC
186
187 To compile this driver as a module, choose M here: the module
188 will be called pwm-tiecap.
189
Philip, Avinash19891b22012-07-25 16:58:19 +0530190config PWM_TIEHRPWM
191 tristate "EHRPWM PWM support"
Philip Avinash1bf0f202013-03-20 12:09:24 +0530192 depends on SOC_AM33XX || ARCH_DAVINCI_DA8XX
Philip, Avinash19891b22012-07-25 16:58:19 +0530193 help
194 PWM driver support for the EHRPWM controller found on AM33XX
195 TI SOC
196
197 To compile this driver as a module, choose M here: the module
198 will be called pwm-tiehrpwm.
199
Philip, Avinashaf0ba002012-11-27 14:18:06 +0530200config PWM_TIPWMSS
201 bool
Philip Avinash1bf0f202013-03-20 12:09:24 +0530202 default y if SOC_AM33XX && (PWM_TIECAP || PWM_TIEHRPWM)
Philip, Avinashaf0ba002012-11-27 14:18:06 +0530203 help
204 PWM Subsystem driver support for AM33xx SOC.
205
206 PWM submodules require PWM config space access from submodule
207 drivers and require common parent driver support.
208
Peter Ujfalusi3744c262012-11-27 11:09:57 +0100209config PWM_TWL
210 tristate "TWL4030/6030 PWM support"
211 depends on TWL4030_CORE
212 help
213 Generic PWM framework driver for TWL4030/6030.
214
215 To compile this driver as a module, choose M here: the module
216 will be called pwm-twl.
217
Peter Ujfalusiaa765642012-11-27 11:09:58 +0100218config PWM_TWL_LED
219 tristate "TWL4030/6030 PWM support for LED drivers"
220 depends on TWL4030_CORE
221 help
222 Generic PWM framework driver for TWL4030/6030 LED terminals.
223
224 To compile this driver as a module, choose M here: the module
225 will be called pwm-twl-led.
226
Sascha Hauera245cce2012-03-15 10:04:37 +0100227config PWM_VT8500
Thierry Redingb133d2a2013-01-30 09:19:55 +0100228 tristate "vt8500 PWM support"
Sascha Hauera245cce2012-03-15 10:04:37 +0100229 depends on ARCH_VT8500
230 help
231 Generic PWM framework driver for vt8500.
232
233 To compile this driver as a module, choose M here: the module
234 will be called pwm-vt8500.
235
Sascha Hauer0c2498f2011-01-28 09:40:40 +0100236endif