Commit | Line | Data |
---|---|---|
0c2498f1 | 1 | menuconfig PWM |
b817bf5c | 2 | bool "Pulse-Width Modulation (PWM) Support" |
0c2498f1 | 3 | help |
b817bf5c | 4 | Generic Pulse-Width Modulation (PWM) support. |
0c2498f1 | 5 | |
b817bf5c TR |
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. | |
0c2498f1 SH |
28 | |
29 | if PWM | |
30 | ||
6173f8f4 TR |
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 | ||
a4315e3c TR |
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 | ||
29693248 SH |
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 | ||
f6b8a570 TR |
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 | ||
2132fa8d APS |
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 | ||
4dce82c1 SG |
78 | config PWM_MXS |
79 | tristate "Freescale MXS PWM support" | |
80 | depends on ARCH_MXS && OF | |
01bf32e9 | 81 | select STMP_DEVICE |
4dce82c1 SG |
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 | ||
79c11b6f TR |
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 | ||
17b2b478 TR |
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 | ||
215c29d3 SH |
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 | ||
0134b932 TR |
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 | ||
8e0cb05b PA |
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 | ||
19891b20 PA |
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 | ||
48a364b7 TR |
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 | ||
a245cceb SH |
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 | ||
0c2498f1 | 163 | endif |