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 | ||
9421bade | 40 | config PWM_ATMEL_TCB |
b133d2a1 | 41 | tristate "Atmel TC Block PWM support" |
9421bade BB |
42 | 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 | ||
a4315e3c TR |
52 | config 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 | ||
29693248 | 61 | config PWM_IMX |
b133d2a1 | 62 | tristate "i.MX PWM support" |
29693248 SH |
63 | 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 | ||
f6b8a570 TR |
70 | config 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 | ||
2132fa8d APS |
80 | config 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 | ||
4dce82c1 SG |
90 | config PWM_MXS |
91 | tristate "Freescale MXS PWM support" | |
92 | depends on ARCH_MXS && OF | |
01bf32e9 | 93 | select STMP_DEVICE |
4dce82c1 SG |
94 | 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 | ||
79c11b6f TR |
100 | config 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 | ||
17b2b478 TR |
109 | config 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 | ||
215c29d3 | 118 | config PWM_SAMSUNG |
b133d2a1 | 119 | tristate "Samsung PWM support" |
215c29d3 SH |
120 | 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 | ||
ce20364b SH |
127 | config 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 | ||
0134b932 TR |
138 | config 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 | ||
8e0cb05b PA |
148 | config PWM_TIECAP |
149 | tristate "ECAP PWM support" | |
1bf0f20b | 150 | depends on SOC_AM33XX || ARCH_DAVINCI_DA8XX |
8e0cb05b PA |
151 | help |
152 | PWM driver support for the ECAP APWM 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-tiecap. | |
157 | ||
19891b20 PA |
158 | config PWM_TIEHRPWM |
159 | tristate "EHRPWM PWM support" | |
1bf0f20b | 160 | depends on SOC_AM33XX || ARCH_DAVINCI_DA8XX |
19891b20 PA |
161 | help |
162 | PWM driver support for the EHRPWM controller found on AM33XX | |
163 | TI SOC | |
164 | ||
165 | To compile this driver as a module, choose M here: the module | |
166 | will be called pwm-tiehrpwm. | |
167 | ||
af0ba001 PA |
168 | config PWM_TIPWMSS |
169 | bool | |
1bf0f20b | 170 | default y if SOC_AM33XX && (PWM_TIECAP || PWM_TIEHRPWM) |
af0ba001 PA |
171 | help |
172 | PWM Subsystem driver support for AM33xx SOC. | |
173 | ||
174 | PWM submodules require PWM config space access from submodule | |
175 | drivers and require common parent driver support. | |
176 | ||
3744c263 PU |
177 | config PWM_TWL |
178 | tristate "TWL4030/6030 PWM support" | |
179 | depends on TWL4030_CORE | |
180 | help | |
181 | Generic PWM framework driver for TWL4030/6030. | |
182 | ||
183 | To compile this driver as a module, choose M here: the module | |
184 | will be called pwm-twl. | |
185 | ||
aa765647 PU |
186 | config PWM_TWL_LED |
187 | tristate "TWL4030/6030 PWM support for LED drivers" | |
188 | depends on TWL4030_CORE | |
189 | help | |
190 | Generic PWM framework driver for TWL4030/6030 LED terminals. | |
191 | ||
192 | To compile this driver as a module, choose M here: the module | |
193 | will be called pwm-twl-led. | |
194 | ||
a245cceb | 195 | config PWM_VT8500 |
b133d2a1 | 196 | tristate "vt8500 PWM support" |
a245cceb SH |
197 | depends on ARCH_VT8500 |
198 | help | |
199 | Generic PWM framework driver for vt8500. | |
200 | ||
201 | To compile this driver as a module, choose M here: the module | |
202 | will be called pwm-vt8500. | |
203 | ||
0c2498f1 | 204 | endif |