1menuconfig PWM 2 bool "Pulse-Width Modulation (PWM) Support" 3 depends on !MACH_JZ4740 && !PUV3_PWM 4 help 5 Generic Pulse-Width Modulation (PWM) support. 6 7 In Pulse-Width Modulation, a variation of the width of pulses 8 in a rectangular pulse signal is used as a means to alter the 9 average power of the signal. Applications include efficient 10 power delivery and voltage regulation. In computer systems, 11 PWMs are commonly used to control fans or the brightness of 12 display backlights. 13 14 This framework provides a generic interface to PWM devices 15 within the Linux kernel. On the driver side it provides an API 16 to register and unregister a PWM chip, an abstraction of a PWM 17 controller, that supports one or more PWM devices. Client 18 drivers can request PWM devices and use the generic framework 19 to configure as well as enable and disable them. 20 21 This generic framework replaces the legacy PWM framework which 22 allows only a single driver implementing the required API. Not 23 all legacy implementations have been ported to the framework 24 yet. The framework provides an API that is backward compatible 25 with the legacy framework so that existing client drivers 26 continue to work as expected. 27 28 If unsure, say no. 29 30if PWM 31 32config PWM_BFIN 33 tristate "Blackfin PWM support" 34 depends on BFIN_GPTIMERS 35 help 36 Generic PWM framework driver for Blackfin. 37 38 To compile this driver as a module, choose M here: the module 39 will be called pwm-bfin. 40 41config PWM_IMX 42 tristate "i.MX pwm support" 43 depends on ARCH_MXC 44 help 45 Generic PWM framework driver for i.MX. 46 47 To compile this driver as a module, choose M here: the module 48 will be called pwm-imx. 49 50config PWM_LPC32XX 51 tristate "LPC32XX PWM support" 52 depends on ARCH_LPC32XX 53 help 54 Generic PWM framework driver for LPC32XX. The LPC32XX SOC has two 55 PWM controllers. 56 57 To compile this driver as a module, choose M here: the module 58 will be called pwm-lpc32xx. 59 60config PWM_MXS 61 tristate "Freescale MXS PWM support" 62 depends on ARCH_MXS && OF 63 select STMP_DEVICE 64 help 65 Generic PWM framework driver for Freescale MXS. 66 67 To compile this driver as a module, choose M here: the module 68 will be called pwm-mxs. 69 70config PWM_PXA 71 tristate "PXA PWM support" 72 depends on ARCH_PXA 73 help 74 Generic PWM framework driver for PXA. 75 76 To compile this driver as a module, choose M here: the module 77 will be called pwm-pxa. 78 79config PWM_SAMSUNG 80 tristate "Samsung pwm support" 81 depends on PLAT_SAMSUNG 82 help 83 Generic PWM framework driver for Samsung. 84 85 To compile this driver as a module, choose M here: the module 86 will be called pwm-samsung. 87 88config PWM_TEGRA 89 tristate "NVIDIA Tegra PWM support" 90 depends on ARCH_TEGRA 91 help 92 Generic PWM framework driver for the PWFM controller found on NVIDIA 93 Tegra SoCs. 94 95 To compile this driver as a module, choose M here: the module 96 will be called pwm-tegra. 97 98config PWM_TIECAP 99 tristate "ECAP PWM support" 100 depends on SOC_AM33XX 101 help 102 PWM driver support for the ECAP APWM controller found on AM33XX 103 TI SOC 104 105 To compile this driver as a module, choose M here: the module 106 will be called pwm-tiecap. 107 108config PWM_TIEHRPWM 109 tristate "EHRPWM PWM support" 110 depends on SOC_AM33XX 111 help 112 PWM driver support for the EHRPWM controller found on AM33XX 113 TI SOC 114 115 To compile this driver as a module, choose M here: the module 116 will be called pwm-tiehrpwm. 117 118config PWM_VT8500 119 tristate "vt8500 pwm support" 120 depends on ARCH_VT8500 121 help 122 Generic PWM framework driver for vt8500. 123 124 To compile this driver as a module, choose M here: the module 125 will be called pwm-vt8500. 126 127endif 128