menuconfig PWM
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bool "Pulse-Width Modulation (PWM) Support"
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help
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Generic Pulse-Width Modulation (PWM) support.
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In Pulse-Width Modulation, a variation of the width of pulses
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in a rectangular pulse signal is used as a means to alter the
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average power of the signal. Applications include efficient
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power delivery and voltage regulation. In computer systems,
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PWMs are commonly used to control fans or the brightness of
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display backlights.
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This framework provides a generic interface to PWM devices
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within the Linux kernel. On the driver side it provides an API
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to register and unregister a PWM chip, an abstraction of a PWM
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controller, that supports one or more PWM devices. Client
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drivers can request PWM devices and use the generic framework
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to configure as well as enable and disable them.
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This generic framework replaces the legacy PWM framework which
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allows only a single driver implementing the required API. Not
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all legacy implementations have been ported to the framework
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yet. The framework provides an API that is backward compatible
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with the legacy framework so that existing client drivers
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continue to work as expected.
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If unsure, say no.
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if PWM
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config PWM_SYSFS
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bool
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default y if SYSFS
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config PWM_AB8500
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tristate "AB8500 PWM support"
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depends on AB8500_CORE && ARCH_U8500
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help
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Generic PWM framework driver for Analog Baseband AB8500.
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To compile this driver as a module, choose M here: the module
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will be called pwm-ab8500.
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config PWM_ATMEL
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tristate "Atmel PWM support"
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depends on ARCH_AT91
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help
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Generic PWM framework driver for Atmel SoC.
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To compile this driver as a module, choose M here: the module
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will be called pwm-atmel.
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config PWM_ATMEL_HLCDC_PWM
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tristate "Atmel HLCDC PWM support"
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depends on MFD_ATMEL_HLCDC
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depends on HAVE_CLK
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help
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Generic PWM framework driver for the PWM output of the HLCDC
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(Atmel High-end LCD Controller). This PWM output is mainly used
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to control the LCD backlight.
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To compile this driver as a module, choose M here: the module
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will be called pwm-atmel-hlcdc.
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config PWM_ATMEL_TCB
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tristate "Atmel TC Block PWM support"
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depends on ATMEL_TCLIB && OF
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help
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Generic PWM framework driver for Atmel Timer Counter Block.
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A Timer Counter Block provides 6 PWM devices grouped by 2.
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Devices in a given group must have the same period.
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To compile this driver as a module, choose M here: the module
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will be called pwm-atmel-tcb.
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config PWM_BCM_IPROC
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tristate "iProc PWM support"
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depends on ARCH_BCM_IPROC || COMPILE_TEST
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depends on COMMON_CLK
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default ARCH_BCM_IPROC
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help
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Generic PWM framework driver for Broadcom iProc PWM block. This
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block is used in Broadcom iProc SoC's.
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To compile this driver as a module, choose M here: the module
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will be called pwm-bcm-iproc.
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config PWM_BCM_KONA
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tristate "Kona PWM support"
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depends on ARCH_BCM_MOBILE
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help
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Generic PWM framework driver for Broadcom Kona PWM block.
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To compile this driver as a module, choose M here: the module
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will be called pwm-bcm-kona.
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config PWM_BCM2835
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tristate "BCM2835 PWM support"
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depends on ARCH_BCM2835
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help
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PWM framework driver for BCM2835 controller (Raspberry Pi)
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To compile this driver as a module, choose M here: the module
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will be called pwm-bcm2835.
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config PWM_BERLIN
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tristate "Marvell Berlin PWM support"
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depends on ARCH_BERLIN
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help
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PWM framework driver for Marvell Berlin SoCs.
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To compile this driver as a module, choose M here: the module
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will be called pwm-berlin.
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config PWM_BRCMSTB
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tristate "Broadcom STB PWM support"
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depends on ARCH_BRCMSTB || BMIPS_GENERIC
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help
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Generic PWM framework driver for the Broadcom Set-top-Box
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SoCs (BCM7xxx).
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To compile this driver as a module, choose M Here: the module
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will be called pwm-brcmstb.c.
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config PWM_CLPS711X
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tristate "CLPS711X PWM support"
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depends on ARCH_CLPS711X || COMPILE_TEST
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depends on HAS_IOMEM
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help
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Generic PWM framework driver for Cirrus Logic CLPS711X.
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To compile this driver as a module, choose M here: the module
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will be called pwm-clps711x.
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config PWM_CRC
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bool "Intel Crystalcove (CRC) PWM support"
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depends on X86 && INTEL_SOC_PMIC
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help
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Generic PWM framework driver for Crystalcove (CRC) PMIC based PWM
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control.
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config PWM_CROS_EC
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tristate "ChromeOS EC PWM driver"
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depends on MFD_CROS_EC
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help
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PWM driver for exposing a PWM attached to the ChromeOS Embedded
|
Controller.
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config PWM_EP93XX
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tristate "Cirrus Logic EP93xx PWM support"
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depends on ARCH_EP93XX
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help
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Generic PWM framework driver for Cirrus Logic EP93xx.
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To compile this driver as a module, choose M here: the module
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will be called pwm-ep93xx.
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config PWM_FSL_FTM
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tristate "Freescale FlexTimer Module (FTM) PWM support"
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depends on HAS_IOMEM
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depends on OF
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select REGMAP_MMIO
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help
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Generic FTM PWM framework driver for Freescale VF610 and
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Layerscape LS-1 SoCs.
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To compile this driver as a module, choose M here: the module
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will be called pwm-fsl-ftm.
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config PWM_GPIO
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tristate "Generic GPIO bit-banged PWM driver"
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depends on OF
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depends on GPIOLIB
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help
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Some platforms do not offer any hardware PWM capabilities but do have
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General Purpose Input Output (GPIO) pins available. Using the kernels
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High-Resolution Timer API this driver tries to toggle GPIO using the
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generic kernel PWM framework. The maximum frequency and/or accuracy
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is dependent on several factors such as system load and the maximum
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speed a pin can be toggled at the hardware.
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To compile this driver as a module, choose M here: the module
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will be called pwm-gpio.
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config PWM_HIBVT
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tristate "HiSilicon BVT PWM support"
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depends on ARCH_HISI || COMPILE_TEST
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help
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Generic PWM framework driver for HiSilicon BVT SoCs.
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To compile this driver as a module, choose M here: the module
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will be called pwm-hibvt.
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config PWM_IMG
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tristate "Imagination Technologies PWM driver"
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depends on HAS_IOMEM
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depends on MFD_SYSCON
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depends on COMMON_CLK
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depends on MIPS || COMPILE_TEST
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help
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Generic PWM framework driver for Imagination Technologies
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PWM block which supports 4 channels.
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To compile this driver as a module, choose M here: the module
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will be called pwm-img
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config PWM_IMX
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tristate "i.MX PWM support"
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depends on ARCH_MXC
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help
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Generic PWM framework driver for i.MX.
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To compile this driver as a module, choose M here: the module
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will be called pwm-imx.
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config PWM_JZ4740
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tristate "Ingenic JZ47xx PWM support"
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depends on MACH_INGENIC
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help
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Generic PWM framework driver for Ingenic JZ47xx based
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machines.
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To compile this driver as a module, choose M here: the module
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will be called pwm-jz4740.
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config PWM_LP3943
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tristate "TI/National Semiconductor LP3943 PWM support"
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depends on MFD_LP3943
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help
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Generic PWM framework driver for LP3943 which supports two PWM
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channels.
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To compile this driver as a module, choose M here: the module
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will be called pwm-lp3943.
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config PWM_LPC18XX_SCT
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tristate "LPC18xx/43xx PWM/SCT support"
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depends on ARCH_LPC18XX
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help
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Generic PWM framework driver for NXP LPC18xx PWM/SCT which
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supports 16 channels.
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A maximum of 15 channels can be requested simultaneously and
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must have the same period.
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To compile this driver as a module, choose M here: the module
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will be called pwm-lpc18xx-sct.
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config PWM_LPC32XX
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tristate "LPC32XX PWM support"
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depends on ARCH_LPC32XX
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help
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Generic PWM framework driver for LPC32XX. The LPC32XX SOC has two
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PWM controllers.
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To compile this driver as a module, choose M here: the module
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will be called pwm-lpc32xx.
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config PWM_LPSS
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tristate
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config PWM_LPSS_PCI
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tristate "Intel LPSS PWM PCI driver"
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depends on X86 && PCI
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select PWM_LPSS
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help
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The PCI driver for Intel Low Power Subsystem PWM controller.
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To compile this driver as a module, choose M here: the module
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will be called pwm-lpss-pci.
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config PWM_LPSS_PLATFORM
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tristate "Intel LPSS PWM platform driver"
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depends on X86 && ACPI
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select PWM_LPSS
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help
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The platform driver for Intel Low Power Subsystem PWM controller.
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To compile this driver as a module, choose M here: the module
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will be called pwm-lpss-platform.
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config PWM_MESON
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tristate "Amlogic Meson PWM driver"
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depends on ARCH_MESON
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help
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The platform driver for Amlogic Meson PWM controller.
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To compile this driver as a module, choose M here: the module
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will be called pwm-meson.
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config PWM_MTK_DISP
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tristate "MediaTek display PWM driver"
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depends on ARCH_MEDIATEK || COMPILE_TEST
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depends on HAS_IOMEM
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help
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Generic PWM framework driver for MediaTek disp-pwm device.
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The PWM is used to control the backlight brightness for display.
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To compile this driver as a module, choose M here: the module
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will be called pwm-mtk-disp.
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config PWM_MEDIATEK
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tristate "MediaTek PWM support"
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depends on ARCH_MEDIATEK || RALINK || COMPILE_TEST
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help
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Generic PWM framework driver for Mediatek ARM SoC.
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To compile this driver as a module, choose M here: the module
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will be called pwm-mediatek.
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config PWM_MXS
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tristate "Freescale MXS PWM support"
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depends on ARCH_MXS && OF
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select STMP_DEVICE
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help
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Generic PWM framework driver for Freescale MXS.
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To compile this driver as a module, choose M here: the module
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will be called pwm-mxs.
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config PWM_OMAP_DMTIMER
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tristate "OMAP Dual-Mode Timer PWM support"
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depends on OF && ARCH_OMAP && OMAP_DM_TIMER
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help
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Generic PWM framework driver for OMAP Dual-Mode Timer PWM output
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To compile this driver as a module, choose M here: the module
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will be called pwm-omap-dmtimer
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config PWM_PCA9685
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tristate "NXP PCA9685 PWM driver"
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depends on I2C
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select REGMAP_I2C
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help
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Generic PWM framework driver for NXP PCA9685 LED controller.
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To compile this driver as a module, choose M here: the module
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will be called pwm-pca9685.
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config PWM_PUV3
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tristate "PKUnity NetBook-0916 PWM support"
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depends on ARCH_PUV3
|
help
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Generic PWM framework driver for PKUnity NetBook-0916.
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To compile this driver as a module, choose M here: the module
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will be called pwm-puv3.
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config PWM_PXA
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tristate "PXA PWM support"
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depends on ARCH_PXA
|
help
|
Generic PWM framework driver for PXA.
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To compile this driver as a module, choose M here: the module
|
will be called pwm-pxa.
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config PWM_RCAR
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tristate "Renesas R-Car PWM support"
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depends on ARCH_RENESAS || COMPILE_TEST
|
depends on HAS_IOMEM
|
help
|
This driver exposes the PWM Timer controller found in Renesas
|
R-Car chips through the PWM API.
|
|
To compile this driver as a module, choose M here: the module
|
will be called pwm-rcar.
|
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config PWM_RENESAS_TPU
|
tristate "Renesas TPU PWM support"
|
depends on ARCH_RENESAS || 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_ROCKCHIP
|
tristate "Rockchip PWM support"
|
depends on ARCH_ROCKCHIP
|
help
|
Generic PWM framework driver for the PWM controller found on
|
Rockchip SoCs.
|
|
config PWM_ROCKCHIP_ONESHOT
|
bool "Rockchip PWM oneshot mode support"
|
depends on PWM_ROCKCHIP
|
help
|
Support Rockchip pwm oneshot mode for specified number of cycles.
|
|
config PWM_SAMSUNG
|
tristate "Samsung PWM support"
|
depends on PLAT_SAMSUNG || ARCH_EXYNOS
|
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_STI
|
tristate "STiH4xx PWM support"
|
depends on ARCH_STI
|
depends on OF
|
help
|
Generic PWM framework driver for STiH4xx SoCs.
|
|
To compile this driver as a module, choose M here: the module
|
will be called pwm-sti.
|
|
config PWM_STM32
|
tristate "STMicroelectronics STM32 PWM"
|
depends on MFD_STM32_TIMERS
|
help
|
Generic PWM framework driver for STM32 SoCs.
|
|
To compile this driver as a module, choose M here: the module
|
will be called pwm-stm32.
|
|
config PWM_STM32_LP
|
tristate "STMicroelectronics STM32 PWM LP"
|
depends on MFD_STM32_LPTIMER || COMPILE_TEST
|
help
|
Generic PWM framework driver for STMicroelectronics STM32 SoCs
|
with Low-Power Timer (LPTIM).
|
|
To compile this driver as a module, choose M here: the module
|
will be called pwm-stm32-lp.
|
|
config PWM_STMPE
|
bool "STMPE expander PWM export"
|
depends on MFD_STMPE
|
help
|
This enables support for the PWMs found in the STMPE I/O
|
expanders.
|
|
config PWM_SUN4I
|
tristate "Allwinner PWM support"
|
depends on ARCH_SUNXI || COMPILE_TEST
|
depends on HAS_IOMEM && COMMON_CLK
|
help
|
Generic PWM framework driver for Allwinner SoCs.
|
|
To compile this driver as a module, choose M here: the module
|
will be called pwm-sun4i.
|
|
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 ARCH_OMAP2PLUS || ARCH_DAVINCI_DA8XX || ARCH_KEYSTONE
|
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 ARCH_OMAP2PLUS || 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 (ARCH_OMAP2PLUS) && (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.
|
|
config PWM_ZX
|
tristate "ZTE ZX PWM support"
|
depends on ARCH_ZX
|
help
|
Generic PWM framework driver for ZTE ZX family SoCs.
|
|
To compile this driver as a module, choose M here: the module
|
will be called pwm-zx.
|
|
endif
|
