memory hotplug: fix section info double registration bug

[mirror_ubuntu-bionic-kernel.git] / drivers / pwm / Kconfig

menuconfig PWM
	bool "Pulse-Width Modulation (PWM) Support"
	depends on !MACH_JZ4740 && !PUV3_PWM
	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_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_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_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_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_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_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
	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
	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_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