| 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_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_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_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 && 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 |
| 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 |
