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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
Thierry Redinga4315e32012-01-02 20:53:50 +010040config PWM_BFIN
41 tristate "Blackfin PWM support"
42 depends on BFIN_GPTIMERS
43 help
44 Generic PWM framework driver for Blackfin.
45
46 To compile this driver as a module, choose M here: the module
47 will be called pwm-bfin.
48
Sascha Hauer29693242012-03-15 10:04:35 +010049config PWM_IMX
50 tristate "i.MX pwm support"
51 depends on ARCH_MXC
52 help
53 Generic PWM framework driver for i.MX.
54
55 To compile this driver as a module, choose M here: the module
56 will be called pwm-imx.
57
Thierry Redingf6b8a572012-08-22 10:01:24 +020058config PWM_JZ4740
59 tristate "Ingenic JZ4740 PWM support"
60 depends on MACH_JZ4740
61 help
62 Generic PWM framework driver for Ingenic JZ4740 based
63 machines.
64
65 To compile this driver as a module, choose M here: the module
66 will be called pwm-jz4740.
67
Alexandre Pereira da Silva2132fa82012-07-10 11:38:10 -030068config PWM_LPC32XX
69 tristate "LPC32XX PWM support"
70 depends on ARCH_LPC32XX
71 help
72 Generic PWM framework driver for LPC32XX. The LPC32XX SOC has two
73 PWM controllers.
74
75 To compile this driver as a module, choose M here: the module
76 will be called pwm-lpc32xx.
77
Shawn Guo4dce82c2012-04-04 10:50:52 +080078config PWM_MXS
79 tristate "Freescale MXS PWM support"
80 depends on ARCH_MXS && OF
Shawn Guo01bf32e2012-06-26 16:58:09 +080081 select STMP_DEVICE
Shawn Guo4dce82c2012-04-04 10:50:52 +080082 help
83 Generic PWM framework driver for Freescale MXS.
84
85 To compile this driver as a module, choose M here: the module
86 will be called pwm-mxs.
87
Thierry Reding79c11b62012-08-31 08:29:24 +020088config PWM_PUV3
89 tristate "PKUnity NetBook-0916 PWM support"
90 depends on ARCH_PUV3
91 help
92 Generic PWM framework driver for PKUnity NetBook-0916.
93
94 To compile this driver as a module, choose M here: the module
95 will be called pwm-puv3.
96
Thierry Reding17b2b472012-01-02 21:22:38 +010097config PWM_PXA
98 tristate "PXA PWM support"
99 depends on ARCH_PXA
100 help
101 Generic PWM framework driver for PXA.
102
103 To compile this driver as a module, choose M here: the module
104 will be called pwm-pxa.
105
Sascha Hauer215c29d2012-03-15 10:04:36 +0100106config PWM_SAMSUNG
107 tristate "Samsung pwm support"
108 depends on PLAT_SAMSUNG
109 help
110 Generic PWM framework driver for Samsung.
111
112 To compile this driver as a module, choose M here: the module
113 will be called pwm-samsung.
114
Shiraz Hashimce203642012-10-25 09:39:13 +0530115config PWM_SPEAR
116 tristate "STMicroelectronics SPEAr PWM support"
117 depends on PLAT_SPEAR
118 depends on OF
119 help
120 Generic PWM framework driver for the PWM controller on ST
121 SPEAr SoCs.
122
123 To compile this driver as a module, choose M here: the module
124 will be called pwm-spear.
125
Thierry Reding0134b932011-12-21 07:47:07 +0100126config PWM_TEGRA
127 tristate "NVIDIA Tegra PWM support"
128 depends on ARCH_TEGRA
129 help
130 Generic PWM framework driver for the PWFM controller found on NVIDIA
131 Tegra SoCs.
132
133 To compile this driver as a module, choose M here: the module
134 will be called pwm-tegra.
135
Philip, Avinash8e0cb052012-07-25 16:58:18 +0530136config PWM_TIECAP
137 tristate "ECAP PWM support"
138 depends on SOC_AM33XX
Philip, Avinashaf0ba002012-11-27 14:18:06 +0530139 select PWM_TIPWMSS
Philip, Avinash8e0cb052012-07-25 16:58:18 +0530140 help
141 PWM driver support for the ECAP APWM controller found on AM33XX
142 TI SOC
143
144 To compile this driver as a module, choose M here: the module
145 will be called pwm-tiecap.
146
Philip, Avinash19891b22012-07-25 16:58:19 +0530147config PWM_TIEHRPWM
148 tristate "EHRPWM PWM support"
149 depends on SOC_AM33XX
Philip, Avinashaf0ba002012-11-27 14:18:06 +0530150 select PWM_TIPWMSS
Philip, Avinash19891b22012-07-25 16:58:19 +0530151 help
152 PWM driver support for the EHRPWM controller found on AM33XX
153 TI SOC
154
155 To compile this driver as a module, choose M here: the module
156 will be called pwm-tiehrpwm.
157
Philip, Avinashaf0ba002012-11-27 14:18:06 +0530158config PWM_TIPWMSS
159 bool
160 depends on SOC_AM33XX && (PWM_TIEHRPWM || PWM_TIECAP)
161 help
162 PWM Subsystem driver support for AM33xx SOC.
163
164 PWM submodules require PWM config space access from submodule
165 drivers and require common parent driver support.
166
Thierry Reding48a364b2012-09-18 10:29:51 +0200167config PWM_TWL6030
168 tristate "TWL6030 PWM support"
169 depends on TWL4030_CORE
170 help
171 Generic PWM framework driver for TWL6030.
172
173 To compile this driver as a module, choose M here: the module
174 will be called pwm-twl6030.
175
Sascha Hauera245cce2012-03-15 10:04:37 +0100176config PWM_VT8500
177 tristate "vt8500 pwm support"
178 depends on ARCH_VT8500
179 help
180 Generic PWM framework driver for vt8500.
181
182 To compile this driver as a module, choose M here: the module
183 will be called pwm-vt8500.
184
Sascha Hauer0c2498f2011-01-28 09:40:40 +0100185endif