linux/drivers/pwm/Kconfig
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   1menuconfig 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
  29if PWM
  30
  31config PWM_SYSFS
  32        bool
  33        default y if SYSFS
  34
  35config PWM_AB8500
  36        tristate "AB8500 PWM support"
  37        depends on AB8500_CORE && ARCH_U8500
  38        help
  39          Generic PWM framework driver for Analog Baseband AB8500.
  40
  41          To compile this driver as a module, choose M here: the module
  42          will be called pwm-ab8500.
  43
  44config PWM_ATMEL_TCB
  45        tristate "Atmel TC Block PWM support"
  46        depends on ATMEL_TCLIB && OF
  47        help
  48          Generic PWM framework driver for Atmel Timer Counter Block.
  49
  50          A Timer Counter Block provides 6 PWM devices grouped by 2.
  51          Devices in a given group must have the same period.
  52
  53          To compile this driver as a module, choose M here: the module
  54          will be called pwm-atmel-tcb.
  55
  56config PWM_BFIN
  57        tristate "Blackfin PWM support"
  58        depends on BFIN_GPTIMERS
  59        help
  60          Generic PWM framework driver for Blackfin.
  61
  62          To compile this driver as a module, choose M here: the module
  63          will be called pwm-bfin.
  64
  65config PWM_IMX
  66        tristate "i.MX PWM support"
  67        depends on ARCH_MXC
  68        help
  69          Generic PWM framework driver for i.MX.
  70
  71          To compile this driver as a module, choose M here: the module
  72          will be called pwm-imx.
  73
  74config PWM_JZ4740
  75        tristate "Ingenic JZ4740 PWM support"
  76        depends on MACH_JZ4740
  77        help
  78          Generic PWM framework driver for Ingenic JZ4740 based
  79          machines.
  80
  81          To compile this driver as a module, choose M here: the module
  82          will be called pwm-jz4740.
  83
  84config PWM_LPC32XX
  85        tristate "LPC32XX PWM support"
  86        depends on ARCH_LPC32XX
  87        help
  88          Generic PWM framework driver for LPC32XX. The LPC32XX SOC has two
  89          PWM controllers.
  90
  91          To compile this driver as a module, choose M here: the module
  92          will be called pwm-lpc32xx.
  93
  94config PWM_MXS
  95        tristate "Freescale MXS PWM support"
  96        depends on ARCH_MXS && OF
  97        select STMP_DEVICE
  98        help
  99          Generic PWM framework driver for Freescale MXS.
 100
 101          To compile this driver as a module, choose M here: the module
 102          will be called pwm-mxs.
 103
 104config PWM_PCA9685
 105        tristate "NXP PCA9685 PWM driver"
 106        depends on OF && REGMAP_I2C
 107        help
 108          Generic PWM framework driver for NXP PCA9685 LED controller.
 109
 110          To compile this driver as a module, choose M here: the module
 111          will be called pwm-pca9685.
 112
 113config PWM_PUV3
 114        tristate "PKUnity NetBook-0916 PWM support"
 115        depends on ARCH_PUV3
 116        help
 117          Generic PWM framework driver for PKUnity NetBook-0916.
 118
 119          To compile this driver as a module, choose M here: the module
 120          will be called pwm-puv3.
 121
 122config PWM_PXA
 123        tristate "PXA PWM support"
 124        depends on ARCH_PXA
 125        help
 126          Generic PWM framework driver for PXA.
 127
 128          To compile this driver as a module, choose M here: the module
 129          will be called pwm-pxa.
 130
 131config PWM_RENESAS_TPU
 132        tristate "Renesas TPU PWM support"
 133        depends on ARCH_SHMOBILE
 134        help
 135          This driver exposes the Timer Pulse Unit (TPU) PWM controller found
 136          in Renesas chips through the PWM API.
 137
 138          To compile this driver as a module, choose M here: the module
 139          will be called pwm-renesas-tpu.
 140
 141config PWM_SAMSUNG
 142        tristate "Samsung PWM support"
 143        depends on PLAT_SAMSUNG
 144        help
 145          Generic PWM framework driver for Samsung.
 146
 147          To compile this driver as a module, choose M here: the module
 148          will be called pwm-samsung.
 149
 150config PWM_SPEAR
 151        tristate "STMicroelectronics SPEAr PWM support"
 152        depends on PLAT_SPEAR
 153        depends on OF
 154        help
 155          Generic PWM framework driver for the PWM controller on ST
 156          SPEAr SoCs.
 157
 158          To compile this driver as a module, choose M here: the module
 159          will be called pwm-spear.
 160
 161config PWM_TEGRA
 162        tristate "NVIDIA Tegra PWM support"
 163        depends on ARCH_TEGRA
 164        help
 165          Generic PWM framework driver for the PWFM controller found on NVIDIA
 166          Tegra SoCs.
 167
 168          To compile this driver as a module, choose M here: the module
 169          will be called pwm-tegra.
 170
 171config  PWM_TIECAP
 172        tristate "ECAP PWM support"
 173        depends on SOC_AM33XX || ARCH_DAVINCI_DA8XX
 174        help
 175          PWM driver support for the ECAP APWM controller found on AM33XX
 176          TI SOC
 177
 178          To compile this driver as a module, choose M here: the module
 179          will be called pwm-tiecap.
 180
 181config  PWM_TIEHRPWM
 182        tristate "EHRPWM PWM support"
 183        depends on SOC_AM33XX || ARCH_DAVINCI_DA8XX
 184        help
 185          PWM driver support for the EHRPWM controller found on AM33XX
 186          TI SOC
 187
 188          To compile this driver as a module, choose M here: the module
 189          will be called pwm-tiehrpwm.
 190
 191config  PWM_TIPWMSS
 192        bool
 193        default y if SOC_AM33XX && (PWM_TIECAP || PWM_TIEHRPWM)
 194        help
 195          PWM Subsystem driver support for AM33xx SOC.
 196
 197          PWM submodules require PWM config space access from submodule
 198          drivers and require common parent driver support.
 199
 200config PWM_TWL
 201        tristate "TWL4030/6030 PWM support"
 202        depends on TWL4030_CORE
 203        help
 204          Generic PWM framework driver for TWL4030/6030.
 205
 206          To compile this driver as a module, choose M here: the module
 207          will be called pwm-twl.
 208
 209config PWM_TWL_LED
 210        tristate "TWL4030/6030 PWM support for LED drivers"
 211        depends on TWL4030_CORE
 212        help
 213          Generic PWM framework driver for TWL4030/6030 LED terminals.
 214
 215          To compile this driver as a module, choose M here: the module
 216          will be called pwm-twl-led.
 217
 218config PWM_VT8500
 219        tristate "vt8500 PWM support"
 220        depends on ARCH_VT8500
 221        help
 222          Generic PWM framework driver for vt8500.
 223
 224          To compile this driver as a module, choose M here: the module
 225          will be called pwm-vt8500.
 226
 227endif
 228
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