1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
|
menuconfig PWM
bool "Pulse-Width Modulation (PWM) Support"
help
Generic Pulse-Width Modulation (PWM) support.
In Pulse-Width Modulation, a variation of the width of pulses
in a rectangular pulse signal is used as a means to alter the
average power of the signal. Applications include efficient
power delivery and voltage regulation. In computer systems,
PWMs are commonly used to control fans or the brightness of
display backlights.
This framework provides a generic interface to PWM devices
within the Linux kernel. On the driver side it provides an API
to register and unregister a PWM chip, an abstraction of a PWM
controller, that supports one or more PWM devices. Client
drivers can request PWM devices and use the generic framework
to configure as well as enable and disable them.
This generic framework replaces the legacy PWM framework which
allows only a single driver implementing the required API. Not
all legacy implementations have been ported to the framework
yet. The framework provides an API that is backward compatible
with the legacy framework so that existing client drivers
continue to work as expected.
If unsure, say no.
if PWM
config PWM_SYSFS
bool
default y if SYSFS
config PWM_AB8500
tristate "AB8500 PWM support"
depends on AB8500_CORE && ARCH_U8500
help
Generic PWM framework driver for Analog Baseband AB8500.
To compile this driver as a module, choose M here: the module
will be called pwm-ab8500.
config PWM_ATMEL
tristate "Atmel PWM support"
depends on ARCH_AT91
help
Generic PWM framework driver for Atmel SoC.
To compile this driver as a module, choose M here: the module
will be called pwm-atmel.
config PWM_ATMEL_TCB
tristate "Atmel TC Block PWM support"
depends on ATMEL_TCLIB && OF
help
Generic PWM framework driver for Atmel Timer Counter Block.
A Timer Counter Block provides 6 PWM devices grouped by 2.
Devices in a given group must have the same period.
To compile this driver as a module, choose M here: the module
will be called pwm-atmel-tcb.
config PWM_BFIN
tristate "Blackfin PWM support"
depends on BFIN_GPTIMERS
help
Generic PWM framework driver for Blackfin.
To compile this driver as a module, choose M here: the module
will be called pwm-bfin.
config PWM_EP93XX
tristate "Cirrus Logic EP93xx PWM support"
depends on ARCH_EP93XX
help
Generic PWM framework driver for Cirrus Logic EP93xx.
To compile this driver as a module, choose M here: the module
will be called pwm-ep93xx.
config PWM_FSL_FTM
tristate "Freescale FlexTimer Module (FTM) PWM support"
depends on OF
help
Generic FTM PWM framework driver for Freescale VF610 and
Layerscape LS-1 SoCs.
To compile this driver as a module, choose M here: the module
will be called pwm-fsl-ftm.
config PWM_IMX
tristate "i.MX PWM support"
depends on ARCH_MXC
help
Generic PWM framework driver for i.MX.
To compile this driver as a module, choose M here: the module
will be called pwm-imx.
config PWM_JZ4740
tristate "Ingenic JZ4740 PWM support"
depends on MACH_JZ4740
help
Generic PWM framework driver for Ingenic JZ4740 based
machines.
To compile this driver as a module, choose M here: the module
will be called pwm-jz4740.
config PWM_LP3943
tristate "TI/National Semiconductor LP3943 PWM support"
depends on MFD_LP3943
help
Generic PWM framework driver for LP3943 which supports two PWM
channels.
To compile this driver as a module, choose M here: the module
will be called pwm-lp3943.
config PWM_LPC32XX
tristate "LPC32XX PWM support"
depends on ARCH_LPC32XX
help
Generic PWM framework driver for LPC32XX. The LPC32XX SOC has two
PWM controllers.
To compile this driver as a module, choose M here: the module
will be called pwm-lpc32xx.
config PWM_MXS
tristate "Freescale MXS PWM support"
depends on ARCH_MXS && OF
select STMP_DEVICE
help
Generic PWM framework driver for Freescale MXS.
To compile this driver as a module, choose M here: the module
will be called pwm-mxs.
config PWM_PCA9685
tristate "NXP PCA9685 PWM driver"
depends on OF && I2C
select REGMAP_I2C
help
Generic PWM framework driver for NXP PCA9685 LED controller.
To compile this driver as a module, choose M here: the module
will be called pwm-pca9685.
config PWM_PUV3
tristate "PKUnity NetBook-0916 PWM support"
depends on ARCH_PUV3
help
Generic PWM framework driver for PKUnity NetBook-0916.
To compile this driver as a module, choose M here: the module
will be called pwm-puv3.
config PWM_PXA
tristate "PXA PWM support"
depends on ARCH_PXA
help
Generic PWM framework driver for PXA.
To compile this driver as a module, choose M here: the module
will be called pwm-pxa.
config PWM_RENESAS_TPU
tristate "Renesas TPU PWM support"
depends on ARCH_SHMOBILE || COMPILE_TEST
depends on HAS_IOMEM
help
This driver exposes the Timer Pulse Unit (TPU) PWM controller found
in Renesas chips through the PWM API.
To compile this driver as a module, choose M here: the module
will be called pwm-renesas-tpu.
config PWM_SAMSUNG
tristate "Samsung PWM support"
depends on PLAT_SAMSUNG
help
Generic PWM framework driver for Samsung.
To compile this driver as a module, choose M here: the module
will be called pwm-samsung.
config PWM_SPEAR
tristate "STMicroelectronics SPEAr PWM support"
depends on PLAT_SPEAR
depends on OF
help
Generic PWM framework driver for the PWM controller on ST
SPEAr SoCs.
To compile this driver as a module, choose M here: the module
will be called pwm-spear.
config PWM_TEGRA
tristate "NVIDIA Tegra PWM support"
depends on ARCH_TEGRA
help
Generic PWM framework driver for the PWFM controller found on NVIDIA
Tegra SoCs.
To compile this driver as a module, choose M here: the module
will be called pwm-tegra.
config PWM_TIECAP
tristate "ECAP PWM support"
depends on SOC_AM33XX || ARCH_DAVINCI_DA8XX
help
PWM driver support for the ECAP APWM controller found on AM33XX
TI SOC
To compile this driver as a module, choose M here: the module
will be called pwm-tiecap.
config PWM_TIEHRPWM
tristate "EHRPWM PWM support"
depends on SOC_AM33XX || ARCH_DAVINCI_DA8XX
help
PWM driver support for the EHRPWM controller found on AM33XX
TI SOC
To compile this driver as a module, choose M here: the module
will be called pwm-tiehrpwm.
config PWM_TIPWMSS
bool
default y if SOC_AM33XX && (PWM_TIECAP || PWM_TIEHRPWM)
help
PWM Subsystem driver support for AM33xx SOC.
PWM submodules require PWM config space access from submodule
drivers and require common parent driver support.
config PWM_TWL
tristate "TWL4030/6030 PWM support"
depends on TWL4030_CORE
help
Generic PWM framework driver for TWL4030/6030.
To compile this driver as a module, choose M here: the module
will be called pwm-twl.
config PWM_TWL_LED
tristate "TWL4030/6030 PWM support for LED drivers"
depends on TWL4030_CORE
help
Generic PWM framework driver for TWL4030/6030 LED terminals.
To compile this driver as a module, choose M here: the module
will be called pwm-twl-led.
config PWM_VT8500
tristate "vt8500 PWM support"
depends on ARCH_VT8500
help
Generic PWM framework driver for vt8500.
To compile this driver as a module, choose M here: the module
will be called pwm-vt8500.
endif
|
