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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
Thierry Reding6173f8f2012-08-31 11:46:24 +020031config PWM_AB8500
32 tristate "AB8500 PWM support"
33 depends on AB8500_CORE && ARCH_U8500
34 help
35 Generic PWM framework driver for Analog Baseband AB8500.
36
37 To compile this driver as a module, choose M here: the module
38 will be called pwm-ab8500.
39
Boris BREZILLON9421bade2013-01-08 16:36:42 +010040config PWM_ATMEL_TCB
Thierry Redingb133d2a2013-01-30 09:19:55 +010041 tristate "Atmel TC Block PWM support"
Boris BREZILLON9421bade2013-01-08 16:36:42 +010042 depends on ATMEL_TCLIB && OF
43 help
44 Generic PWM framework driver for Atmel Timer Counter Block.
45
46 A Timer Counter Block provides 6 PWM devices grouped by 2.
47 Devices in a given group must have the same period.
48
49 To compile this driver as a module, choose M here: the module
50 will be called pwm-atmel-tcb.
51
Thierry Redinga4315e32012-01-02 20:53:50 +010052config PWM_BFIN
53 tristate "Blackfin PWM support"
54 depends on BFIN_GPTIMERS
55 help
56 Generic PWM framework driver for Blackfin.
57
58 To compile this driver as a module, choose M here: the module
59 will be called pwm-bfin.
60
Sascha Hauer29693242012-03-15 10:04:35 +010061config PWM_IMX
Thierry Redingb133d2a2013-01-30 09:19:55 +010062 tristate "i.MX PWM support"
Sascha Hauer29693242012-03-15 10:04:35 +010063 depends on ARCH_MXC
64 help
65 Generic PWM framework driver for i.MX.
66
67 To compile this driver as a module, choose M here: the module
68 will be called pwm-imx.
69
Thierry Redingf6b8a572012-08-22 10:01:24 +020070config PWM_JZ4740
71 tristate "Ingenic JZ4740 PWM support"
72 depends on MACH_JZ4740
73 help
74 Generic PWM framework driver for Ingenic JZ4740 based
75 machines.
76
77 To compile this driver as a module, choose M here: the module
78 will be called pwm-jz4740.
79
Alexandre Pereira da Silva2132fa82012-07-10 11:38:10 -030080config PWM_LPC32XX
81 tristate "LPC32XX PWM support"
82 depends on ARCH_LPC32XX
83 help
84 Generic PWM framework driver for LPC32XX. The LPC32XX SOC has two
85 PWM controllers.
86
87 To compile this driver as a module, choose M here: the module
88 will be called pwm-lpc32xx.
89
Shawn Guo4dce82c2012-04-04 10:50:52 +080090config PWM_MXS
91 tristate "Freescale MXS PWM support"
92 depends on ARCH_MXS && OF
Shawn Guo01bf32e2012-06-26 16:58:09 +080093 select STMP_DEVICE
Shawn Guo4dce82c2012-04-04 10:50:52 +080094 help
95 Generic PWM framework driver for Freescale MXS.
96
97 To compile this driver as a module, choose M here: the module
98 will be called pwm-mxs.
99
Thierry Reding79c11b62012-08-31 08:29:24 +0200100config PWM_PUV3
101 tristate "PKUnity NetBook-0916 PWM support"
102 depends on ARCH_PUV3
103 help
104 Generic PWM framework driver for PKUnity NetBook-0916.
105
106 To compile this driver as a module, choose M here: the module
107 will be called pwm-puv3.
108
Thierry Reding17b2b472012-01-02 21:22:38 +0100109config PWM_PXA
110 tristate "PXA PWM support"
111 depends on ARCH_PXA
112 help
113 Generic PWM framework driver for PXA.
114
115 To compile this driver as a module, choose M here: the module
116 will be called pwm-pxa.
117
Sascha Hauer215c29d2012-03-15 10:04:36 +0100118config PWM_SAMSUNG
Thierry Redingb133d2a2013-01-30 09:19:55 +0100119 tristate "Samsung PWM support"
Sascha Hauer215c29d2012-03-15 10:04:36 +0100120 depends on PLAT_SAMSUNG
121 help
122 Generic PWM framework driver for Samsung.
123
124 To compile this driver as a module, choose M here: the module
125 will be called pwm-samsung.
126
Shiraz Hashimce203642012-10-25 09:39:13 +0530127config PWM_SPEAR
128 tristate "STMicroelectronics SPEAr PWM support"
129 depends on PLAT_SPEAR
130 depends on OF
131 help
132 Generic PWM framework driver for the PWM controller on ST
133 SPEAr SoCs.
134
135 To compile this driver as a module, choose M here: the module
136 will be called pwm-spear.
137
Thierry Reding0134b932011-12-21 07:47:07 +0100138config PWM_TEGRA
139 tristate "NVIDIA Tegra PWM support"
140 depends on ARCH_TEGRA
141 help
142 Generic PWM framework driver for the PWFM controller found on NVIDIA
143 Tegra SoCs.
144
145 To compile this driver as a module, choose M here: the module
146 will be called pwm-tegra.
147
Philip, Avinash8e0cb052012-07-25 16:58:18 +0530148config PWM_TIECAP
149 tristate "ECAP PWM support"
150 depends on SOC_AM33XX
Philip, Avinashaf0ba002012-11-27 14:18:06 +0530151 select PWM_TIPWMSS
Philip, Avinash8e0cb052012-07-25 16:58:18 +0530152 help
153 PWM driver support for the ECAP APWM controller found on AM33XX
154 TI SOC
155
156 To compile this driver as a module, choose M here: the module
157 will be called pwm-tiecap.
158
Philip, Avinash19891b22012-07-25 16:58:19 +0530159config PWM_TIEHRPWM
160 tristate "EHRPWM PWM support"
161 depends on SOC_AM33XX
Philip, Avinashaf0ba002012-11-27 14:18:06 +0530162 select PWM_TIPWMSS
Philip, Avinash19891b22012-07-25 16:58:19 +0530163 help
164 PWM driver support for the EHRPWM controller found on AM33XX
165 TI SOC
166
167 To compile this driver as a module, choose M here: the module
168 will be called pwm-tiehrpwm.
169
Philip, Avinashaf0ba002012-11-27 14:18:06 +0530170config PWM_TIPWMSS
171 bool
172 depends on SOC_AM33XX && (PWM_TIEHRPWM || PWM_TIECAP)
173 help
174 PWM Subsystem driver support for AM33xx SOC.
175
176 PWM submodules require PWM config space access from submodule
177 drivers and require common parent driver support.
178
Peter Ujfalusi3744c262012-11-27 11:09:57 +0100179config PWM_TWL
180 tristate "TWL4030/6030 PWM support"
181 depends on TWL4030_CORE
182 help
183 Generic PWM framework driver for TWL4030/6030.
184
185 To compile this driver as a module, choose M here: the module
186 will be called pwm-twl.
187
Peter Ujfalusiaa765642012-11-27 11:09:58 +0100188config PWM_TWL_LED
189 tristate "TWL4030/6030 PWM support for LED drivers"
190 depends on TWL4030_CORE
191 help
192 Generic PWM framework driver for TWL4030/6030 LED terminals.
193
194 To compile this driver as a module, choose M here: the module
195 will be called pwm-twl-led.
196
Sascha Hauera245cce2012-03-15 10:04:37 +0100197config PWM_VT8500
Thierry Redingb133d2a2013-01-30 09:19:55 +0100198 tristate "vt8500 PWM support"
Sascha Hauera245cce2012-03-15 10:04:37 +0100199 depends on ARCH_VT8500
200 help
201 Generic PWM framework driver for vt8500.
202
203 To compile this driver as a module, choose M here: the module
204 will be called pwm-vt8500.
205
Sascha Hauer0c2498f2011-01-28 09:40:40 +0100206endif