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436 lines
12 KiB
436 lines
12 KiB
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 || AVR32 |
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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_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_BFIN |
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tristate "Blackfin PWM support" |
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depends on BFIN_GPTIMERS |
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help |
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Generic PWM framework driver for Blackfin. |
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To compile this driver as a module, choose M here: the module |
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will be called pwm-bfin. |
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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_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 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_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 JZ4740 PWM support" |
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depends on MACH_JZ4740 |
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help |
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Generic PWM framework driver for Ingenic JZ4740 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 "Intel LPSS PWM support" |
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depends on X86 |
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help |
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Generic PWM framework driver for Intel Low Power Subsystem PWM |
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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. |
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config PWM_LPSS_PCI |
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tristate "Intel LPSS PWM PCI driver" |
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depends on PWM_LPSS && PCI |
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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 PWM_LPSS && ACPI |
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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_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_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_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 |
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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 |
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help |
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Generic PWM framework driver for PXA. |
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To compile this driver as a module, choose M here: the module |
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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_RCAR_GEN1 || ARCH_RCAR_GEN2 || COMPILE_TEST |
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depends on HAS_IOMEM |
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help |
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This driver exposes the PWM Timer controller found in Renesas |
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R-Car chips through the PWM API. |
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To compile this driver as a module, choose M here: the module |
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will be called pwm-rcar. |
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config PWM_RENESAS_TPU |
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tristate "Renesas TPU PWM support" |
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depends on ARCH_SHMOBILE || COMPILE_TEST |
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depends on HAS_IOMEM |
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help |
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This driver exposes the Timer Pulse Unit (TPU) PWM controller found |
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in Renesas chips through the PWM API. |
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To compile this driver as a module, choose M here: the module |
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will be called pwm-renesas-tpu. |
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config PWM_ROCKCHIP |
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tristate "Rockchip PWM support" |
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depends on ARCH_ROCKCHIP |
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help |
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Generic PWM framework driver for the PWM controller found on |
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Rockchip SoCs. |
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config PWM_SAMSUNG |
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tristate "Samsung PWM support" |
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depends on PLAT_SAMSUNG || ARCH_EXYNOS |
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help |
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Generic PWM framework driver for Samsung. |
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To compile this driver as a module, choose M here: the module |
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will be called pwm-samsung. |
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config PWM_SPEAR |
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tristate "STMicroelectronics SPEAr PWM support" |
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depends on PLAT_SPEAR |
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depends on OF |
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help |
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Generic PWM framework driver for the PWM controller on ST |
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SPEAr 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-spear. |
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config PWM_STI |
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tristate "STiH4xx PWM support" |
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depends on ARCH_STI |
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depends on OF |
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help |
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Generic PWM framework driver for STiH4xx 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-sti. |
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config PWM_SUN4I |
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tristate "Allwinner PWM support" |
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depends on ARCH_SUNXI || COMPILE_TEST |
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depends on HAS_IOMEM && COMMON_CLK |
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help |
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Generic PWM framework driver for Allwinner 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-sun4i. |
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config PWM_TEGRA |
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tristate "NVIDIA Tegra PWM support" |
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depends on ARCH_TEGRA |
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help |
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Generic PWM framework driver for the PWFM controller found on NVIDIA |
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Tegra 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-tegra. |
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config PWM_TIECAP |
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tristate "ECAP PWM support" |
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depends on ARCH_OMAP2PLUS || ARCH_DAVINCI_DA8XX |
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help |
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PWM driver support for the ECAP APWM controller found on AM33XX |
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TI 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-tiecap. |
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config PWM_TIEHRPWM |
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tristate "EHRPWM PWM support" |
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depends on ARCH_OMAP2PLUS || ARCH_DAVINCI_DA8XX |
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help |
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PWM driver support for the EHRPWM controller found on AM33XX |
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TI 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-tiehrpwm. |
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config PWM_TIPWMSS |
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bool |
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default y if (ARCH_OMAP2PLUS) && (PWM_TIECAP || PWM_TIEHRPWM) |
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help |
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PWM Subsystem driver support for AM33xx SOC. |
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PWM submodules require PWM config space access from submodule |
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drivers and require common parent driver support. |
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config PWM_TWL |
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tristate "TWL4030/6030 PWM support" |
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depends on TWL4030_CORE |
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help |
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Generic PWM framework driver for TWL4030/6030. |
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To compile this driver as a module, choose M here: the module |
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will be called pwm-twl. |
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config PWM_TWL_LED |
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tristate "TWL4030/6030 PWM support for LED drivers" |
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depends on TWL4030_CORE |
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help |
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Generic PWM framework driver for TWL4030/6030 LED terminals. |
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To compile this driver as a module, choose M here: the module |
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will be called pwm-twl-led. |
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config PWM_VT8500 |
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tristate "vt8500 PWM support" |
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depends on ARCH_VT8500 |
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help |
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Generic PWM framework driver for vt8500. |
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To compile this driver as a module, choose M here: the module |
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will be called pwm-vt8500. |
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endif
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