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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_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
40 config 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
49 config 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
58 config 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
68 config 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
78 config PWM_MXS
79 tristate "Freescale MXS PWM support"
80 depends on ARCH_MXS && OF
81 select STMP_DEVICE
82 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
88 config 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
97 config 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
106 config 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
115 config PWM_TEGRA
116 tristate "NVIDIA Tegra PWM support"
117 depends on ARCH_TEGRA
118 help
119 Generic PWM framework driver for the PWFM controller found on NVIDIA
120 Tegra SoCs.
121
122 To compile this driver as a module, choose M here: the module
123 will be called pwm-tegra.
124
125 config PWM_TIECAP
126 tristate "ECAP PWM support"
127 depends on SOC_AM33XX
128 help
129 PWM driver support for the ECAP APWM controller found on AM33XX
130 TI SOC
131
132 To compile this driver as a module, choose M here: the module
133 will be called pwm-tiecap.
134
135 config PWM_TIEHRPWM
136 tristate "EHRPWM PWM support"
137 depends on SOC_AM33XX
138 help
139 PWM driver support for the EHRPWM controller found on AM33XX
140 TI SOC
141
142 To compile this driver as a module, choose M here: the module
143 will be called pwm-tiehrpwm.
144
145 config PWM_TWL6030
146 tristate "TWL6030 PWM support"
147 depends on TWL4030_CORE
148 help
149 Generic PWM framework driver for TWL6030.
150
151 To compile this driver as a module, choose M here: the module
152 will be called pwm-twl6030.
153
154 config PWM_VT8500
155 tristate "vt8500 pwm support"
156 depends on ARCH_VT8500
157 help
158 Generic PWM framework driver for vt8500.
159
160 To compile this driver as a module, choose M here: the module
161 will be called pwm-vt8500.
162
163 endif