drivers/pwm/Kconfig

   1 # SPDX-License-Identifier: GPL-2.0-only
   2 menuconfig PWM
   3         bool "Pulse-Width Modulation (PWM) Support"
   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
  30 if PWM
  31
  32 config PWM_SYSFS
  33         bool
  34         default y if SYSFS
  35
  36 config PWM_DEBUG
  37         bool "PWM lowlevel drivers additional checks and debug messages"
  38         depends on DEBUG_KERNEL
  39         help
  40           This option enables some additional checks to help lowlevel driver
  41           authors to get their callbacks implemented correctly.
  42           It is expected to introduce some runtime overhead and diagnostic
  43           output to the kernel log, so only enable while working on a driver.
  44
  45 config PWM_AB8500
  46         tristate "AB8500 PWM support"
  47         depends on AB8500_CORE && ARCH_U8500
  48         help
  49           Generic PWM framework driver for Analog Baseband AB8500.
  50
  51           To compile this driver as a module, choose M here: the module
  52           will be called pwm-ab8500.
  53
  54 config PWM_ATMEL
  55         tristate "Atmel PWM support"
  56         depends on OF
  57         depends on ARCH_AT91 || COMPILE_TEST
  58         help
  59           Generic PWM framework driver for Atmel SoC.
  60
  61           To compile this driver as a module, choose M here: the module
  62           will be called pwm-atmel.
  63
  64 config PWM_ATMEL_HLCDC_PWM
  65         tristate "Atmel HLCDC PWM support"
  66         depends on MFD_ATMEL_HLCDC
  67         depends on HAVE_CLK
  68         help
  69           Generic PWM framework driver for the PWM output of the HLCDC
  70           (Atmel High-end LCD Controller). This PWM output is mainly used
  71           to control the LCD backlight.
  72
  73           To compile this driver as a module, choose M here: the module
  74           will be called pwm-atmel-hlcdc.
  75
  76 config PWM_ATMEL_TCB
  77         tristate "Atmel TC Block PWM support"
  78         depends on ATMEL_TCLIB && OF
  79         help
  80           Generic PWM framework driver for Atmel Timer Counter Block.
  81
  82           A Timer Counter Block provides 6 PWM devices grouped by 2.
  83           Devices in a given group must have the same period.
  84
  85           To compile this driver as a module, choose M here: the module
  86           will be called pwm-atmel-tcb.
  87
  88 config PWM_BCM_IPROC
  89         tristate "iProc PWM support"
  90         depends on ARCH_BCM_IPROC || COMPILE_TEST
  91         depends on COMMON_CLK
  92         default ARCH_BCM_IPROC
  93         help
  94           Generic PWM framework driver for Broadcom iProc PWM block. This
  95           block is used in Broadcom iProc SoC's.
  96
  97           To compile this driver as a module, choose M here: the module
  98           will be called pwm-bcm-iproc.
  99
 100 config PWM_BCM_KONA
 101         tristate "Kona PWM support"
 102         depends on ARCH_BCM_MOBILE || ARCH_BCM_CYGNUS || COMPILE_TEST
 103         depends on HAVE_CLK && HAS_IOMEM
 104         default ARCH_BCM_MOBILE || ARCH_BCM_CYGNUS
 105         help
 106           Generic PWM framework driver for Broadcom Kona PWM block.
 107
 108           To compile this driver as a module, choose M here: the module
 109           will be called pwm-bcm-kona.
 110
 111 config PWM_BCM2835
 112         tristate "BCM2835 PWM support"
 113         depends on ARCH_BCM2835 || ARCH_BRCMSTB || COMPILE_TEST
 114         help
 115           PWM framework driver for BCM2835 controller (Raspberry Pi)
 116
 117           To compile this driver as a module, choose M here: the module
 118           will be called pwm-bcm2835.
 119
 120 config PWM_BERLIN
 121         tristate "Marvell Berlin PWM support"
 122         depends on ARCH_BERLIN || COMPILE_TEST
 123         help
 124           PWM framework driver for Marvell Berlin SoCs.
 125
 126           To compile this driver as a module, choose M here: the module
 127           will be called pwm-berlin.
 128
 129 config PWM_BRCMSTB
 130         tristate "Broadcom STB PWM support"
 131         depends on ARCH_BRCMSTB || BMIPS_GENERIC || COMPILE_TEST
 132         help
 133           Generic PWM framework driver for the Broadcom Set-top-Box
 134           SoCs (BCM7xxx).
 135
 136           To compile this driver as a module, choose M Here: the module
 137           will be called pwm-brcmstb.c.
 138
 139 config PWM_CLPS711X
 140         tristate "CLPS711X PWM support"
 141         depends on ARCH_CLPS711X || COMPILE_TEST
 142         depends on HAS_IOMEM
 143         help
 144           Generic PWM framework driver for Cirrus Logic CLPS711X.
 145
 146           To compile this driver as a module, choose M here: the module
 147           will be called pwm-clps711x.
 148
 149 config PWM_CRC
 150         bool "Intel Crystalcove (CRC) PWM support"
 151         depends on X86 && INTEL_SOC_PMIC
 152         help
 153           Generic PWM framework driver for Crystalcove (CRC) PMIC based PWM
 154           control.
 155
 156 config PWM_CROS_EC
 157         tristate "ChromeOS EC PWM driver"
 158         depends on CROS_EC
 159         help
 160           PWM driver for exposing a PWM attached to the ChromeOS Embedded
 161           Controller.
 162
 163 config PWM_EP93XX
 164         tristate "Cirrus Logic EP93xx PWM support"
 165         depends on ARCH_EP93XX || COMPILE_TEST
 166         help
 167           Generic PWM framework driver for Cirrus Logic EP93xx.
 168
 169           To compile this driver as a module, choose M here: the module
 170           will be called pwm-ep93xx.
 171
 172 config PWM_FSL_FTM
 173         tristate "Freescale FlexTimer Module (FTM) PWM support"
 174         depends on HAS_IOMEM
 175         depends on OF
 176         select REGMAP_MMIO
 177         help
 178           Generic FTM PWM framework driver for Freescale VF610 and
 179           Layerscape LS-1 SoCs.
 180
 181           To compile this driver as a module, choose M here: the module
 182           will be called pwm-fsl-ftm.
 183
 184 config PWM_HIBVT
 185         tristate "HiSilicon BVT PWM support"
 186         depends on ARCH_HISI || COMPILE_TEST
 187         help
 188           Generic PWM framework driver for HiSilicon BVT SoCs.
 189
 190           To compile this driver as a module, choose M here: the module
 191           will be called pwm-hibvt.
 192
 193 config PWM_IMG
 194         tristate "Imagination Technologies PWM driver"
 195         depends on HAS_IOMEM
 196         depends on MFD_SYSCON
 197         depends on COMMON_CLK
 198         depends on MIPS || COMPILE_TEST
 199         help
 200           Generic PWM framework driver for Imagination Technologies
 201           PWM block which supports 4 channels.
 202
 203           To compile this driver as a module, choose M here: the module
 204           will be called pwm-img
 205
 206 config PWM_IMX1
 207         tristate "i.MX1 PWM support"
 208         depends on ARCH_MXC || COMPILE_TEST
 209         help
 210           Generic PWM framework driver for i.MX1 and i.MX21
 211
 212           To compile this driver as a module, choose M here: the module
 213           will be called pwm-imx1.
 214
 215 config PWM_IMX27
 216         tristate "i.MX27 PWM support"
 217         depends on ARCH_MXC || COMPILE_TEST
 218         help
 219           Generic PWM framework driver for i.MX27 and later i.MX SoCs.
 220
 221           To compile this driver as a module, choose M here: the module
 222           will be called pwm-imx27.
 223
 224 config PWM_IMX_TPM
 225         tristate "i.MX TPM PWM support"
 226         depends on ARCH_MXC || COMPILE_TEST
 227         depends on HAVE_CLK && HAS_IOMEM
 228         help
 229           Generic PWM framework driver for i.MX7ULP TPM module, TPM's full
 230           name is Low Power Timer/Pulse Width Modulation Module.
 231
 232           To compile this driver as a module, choose M here: the module
 233           will be called pwm-imx-tpm.
 234
 235 config PWM_JZ4740
 236         tristate "Ingenic JZ47xx PWM support"
 237         depends on MACH_INGENIC
 238         depends on COMMON_CLK
 239         select MFD_SYSCON
 240         help
 241           Generic PWM framework driver for Ingenic JZ47xx based
 242           machines.
 243
 244           To compile this driver as a module, choose M here: the module
 245           will be called pwm-jz4740.
 246
 247 config PWM_LP3943
 248         tristate "TI/National Semiconductor LP3943 PWM support"
 249         depends on MFD_LP3943
 250         help
 251           Generic PWM framework driver for LP3943 which supports two PWM
 252           channels.
 253
 254           To compile this driver as a module, choose M here: the module
 255           will be called pwm-lp3943.
 256
 257 config PWM_LPC18XX_SCT
 258         tristate "LPC18xx/43xx PWM/SCT support"
 259         depends on ARCH_LPC18XX || COMPILE_TEST
 260         help
 261           Generic PWM framework driver for NXP LPC18xx PWM/SCT which
 262           supports 16 channels.
 263           A maximum of 15 channels can be requested simultaneously and
 264           must have the same period.
 265
 266           To compile this driver as a module, choose M here: the module
 267           will be called pwm-lpc18xx-sct.
 268
 269 config PWM_LPC32XX
 270         tristate "LPC32XX PWM support"
 271         depends on ARCH_LPC32XX || COMPILE_TEST
 272         help
 273           Generic PWM framework driver for LPC32XX. The LPC32XX SOC has two
 274           PWM controllers.
 275
 276           To compile this driver as a module, choose M here: the module
 277           will be called pwm-lpc32xx.
 278
 279 config PWM_LPSS
 280         tristate
 281
 282 config PWM_LPSS_PCI
 283         tristate "Intel LPSS PWM PCI driver"
 284         depends on X86 && PCI
 285         select PWM_LPSS
 286         help
 287           The PCI driver for Intel Low Power Subsystem PWM controller.
 288
 289           To compile this driver as a module, choose M here: the module
 290           will be called pwm-lpss-pci.
 291
 292 config PWM_LPSS_PLATFORM
 293         tristate "Intel LPSS PWM platform driver"
 294         depends on X86 && ACPI
 295         select PWM_LPSS
 296         help
 297           The platform driver for Intel Low Power Subsystem PWM controller.
 298
 299           To compile this driver as a module, choose M here: the module
 300           will be called pwm-lpss-platform.
 301
 302 config PWM_MESON
 303         tristate "Amlogic Meson PWM driver"
 304         depends on ARCH_MESON || COMPILE_TEST
 305         depends on COMMON_CLK
 306         help
 307           The platform driver for Amlogic Meson PWM controller.
 308
 309           To compile this driver as a module, choose M here: the module
 310           will be called pwm-meson.
 311
 312 config PWM_MTK_DISP
 313         tristate "MediaTek display PWM driver"
 314         depends on ARCH_MEDIATEK || COMPILE_TEST
 315         depends on HAS_IOMEM
 316         help
 317           Generic PWM framework driver for MediaTek disp-pwm device.
 318           The PWM is used to control the backlight brightness for display.
 319
 320           To compile this driver as a module, choose M here: the module
 321           will be called pwm-mtk-disp.
 322
 323 config PWM_MEDIATEK
 324         tristate "MediaTek PWM support"
 325         depends on ARCH_MEDIATEK || RALINK || COMPILE_TEST
 326         help
 327           Generic PWM framework driver for Mediatek ARM SoC.
 328
 329           To compile this driver as a module, choose M here: the module
 330           will be called pwm-mediatek.
 331
 332 config PWM_MXS
 333         tristate "Freescale MXS PWM support"
 334         depends on OF
 335         depends on ARCH_MXS || COMPILE_TEST
 336         select STMP_DEVICE
 337         help
 338           Generic PWM framework driver for Freescale MXS.
 339
 340           To compile this driver as a module, choose M here: the module
 341           will be called pwm-mxs.
 342
 343 config PWM_OMAP_DMTIMER
 344         tristate "OMAP Dual-Mode Timer PWM support"
 345         depends on OF
 346         depends on OMAP_DM_TIMER || COMPILE_TEST
 347         help
 348           Generic PWM framework driver for OMAP Dual-Mode Timer PWM output
 349
 350           To compile this driver as a module, choose M here: the module
 351           will be called pwm-omap-dmtimer
 352
 353 config PWM_PCA9685
 354         tristate "NXP PCA9685 PWM driver"
 355         depends on I2C
 356         select REGMAP_I2C
 357         help
 358           Generic PWM framework driver for NXP PCA9685 LED controller.
 359
 360           To compile this driver as a module, choose M here: the module
 361           will be called pwm-pca9685.
 362
 363 config PWM_PUV3
 364         tristate "PKUnity NetBook-0916 PWM support"
 365         depends on ARCH_PUV3
 366         help
 367           Generic PWM framework driver for PKUnity NetBook-0916.
 368
 369           To compile this driver as a module, choose M here: the module
 370           will be called pwm-puv3.
 371
 372 config PWM_PXA
 373         tristate "PXA PWM support"
 374         depends on ARCH_PXA || COMPILE_TEST
 375         help
 376           Generic PWM framework driver for PXA.
 377
 378           To compile this driver as a module, choose M here: the module
 379           will be called pwm-pxa.
 380
 381 config PWM_RCAR
 382         tristate "Renesas R-Car PWM support"
 383         depends on ARCH_RENESAS || COMPILE_TEST
 384         depends on HAS_IOMEM
 385         help
 386           This driver exposes the PWM Timer controller found in Renesas
 387           R-Car chips through the PWM API.
 388
 389           To compile this driver as a module, choose M here: the module
 390           will be called pwm-rcar.
 391
 392 config PWM_RENESAS_TPU
 393         tristate "Renesas TPU PWM support"
 394         depends on ARCH_RENESAS || COMPILE_TEST
 395         depends on HAS_IOMEM
 396         help
 397           This driver exposes the Timer Pulse Unit (TPU) PWM controller found
 398           in Renesas chips through the PWM API.
 399
 400           To compile this driver as a module, choose M here: the module
 401           will be called pwm-renesas-tpu.
 402
 403 config PWM_ROCKCHIP
 404         tristate "Rockchip PWM support"
 405         depends on ARCH_ROCKCHIP || COMPILE_TEST
 406         help
 407           Generic PWM framework driver for the PWM controller found on
 408           Rockchip SoCs.
 409
 410 config PWM_SAMSUNG
 411         tristate "Samsung PWM support"
 412         depends on PLAT_SAMSUNG || ARCH_EXYNOS || COMPILE_TEST
 413         help
 414           Generic PWM framework driver for Samsung.
 415
 416           To compile this driver as a module, choose M here: the module
 417           will be called pwm-samsung.
 418
 419 config PWM_SIFIVE
 420         tristate "SiFive PWM support"
 421         depends on OF
 422         depends on COMMON_CLK
 423         depends on RISCV || COMPILE_TEST
 424         help
 425           Generic PWM framework driver for SiFive SoCs.
 426
 427           To compile this driver as a module, choose M here: the module
 428           will be called pwm-sifive.
 429
 430 config PWM_SPEAR
 431         tristate "STMicroelectronics SPEAr PWM support"
 432         depends on PLAT_SPEAR || COMPILE_TEST
 433         depends on OF
 434         help
 435           Generic PWM framework driver for the PWM controller on ST
 436           SPEAr SoCs.
 437
 438           To compile this driver as a module, choose M here: the module
 439           will be called pwm-spear.
 440
 441 config PWM_SPRD
 442         tristate "Spreadtrum PWM support"
 443         depends on ARCH_SPRD || COMPILE_TEST
 444         depends on HAS_IOMEM
 445         help
 446           Generic PWM framework driver for the PWM controller on
 447           Spreadtrum SoCs.
 448
 449           To compile this driver as a module, choose M here: the module
 450           will be called pwm-sprd.
 451
 452 config PWM_STI
 453         tristate "STiH4xx PWM support"
 454         depends on ARCH_STI || COMPILE_TEST
 455         depends on OF
 456         help
 457           Generic PWM framework driver for STiH4xx SoCs.
 458
 459           To compile this driver as a module, choose M here: the module
 460           will be called pwm-sti.
 461
 462 config PWM_STM32
 463         tristate "STMicroelectronics STM32 PWM"
 464         depends on MFD_STM32_TIMERS || COMPILE_TEST
 465         help
 466           Generic PWM framework driver for STM32 SoCs.
 467
 468           To compile this driver as a module, choose M here: the module
 469           will be called pwm-stm32.
 470
 471 config PWM_STM32_LP
 472         tristate "STMicroelectronics STM32 PWM LP"
 473         depends on MFD_STM32_LPTIMER || COMPILE_TEST
 474         help
 475           Generic PWM framework driver for STMicroelectronics STM32 SoCs
 476           with Low-Power Timer (LPTIM).
 477
 478           To compile this driver as a module, choose M here: the module
 479           will be called pwm-stm32-lp.
 480
 481 config PWM_STMPE
 482         bool "STMPE expander PWM export"
 483         depends on MFD_STMPE
 484         help
 485           This enables support for the PWMs found in the STMPE I/O
 486           expanders.
 487
 488 config PWM_SUN4I
 489         tristate "Allwinner PWM support"
 490         depends on ARCH_SUNXI || COMPILE_TEST
 491         depends on HAS_IOMEM && COMMON_CLK
 492         help
 493           Generic PWM framework driver for Allwinner SoCs.
 494
 495           To compile this driver as a module, choose M here: the module
 496           will be called pwm-sun4i.
 497
 498 config PWM_TEGRA
 499         tristate "NVIDIA Tegra PWM support"
 500         depends on ARCH_TEGRA || COMPILE_TEST
 501         help
 502           Generic PWM framework driver for the PWFM controller found on NVIDIA
 503           Tegra SoCs.
 504
 505           To compile this driver as a module, choose M here: the module
 506           will be called pwm-tegra.
 507
 508 config PWM_TIECAP
 509         tristate "ECAP PWM support"
 510         depends on ARCH_OMAP2PLUS || ARCH_DAVINCI_DA8XX || ARCH_KEYSTONE || ARCH_K3 || COMPILE_TEST
 511         help
 512           PWM driver support for the ECAP APWM controller found on TI SOCs
 513
 514           To compile this driver as a module, choose M here: the module
 515           will be called pwm-tiecap.
 516
 517 config PWM_TIEHRPWM
 518         tristate "EHRPWM PWM support"
 519         depends on ARCH_OMAP2PLUS || ARCH_DAVINCI_DA8XX || ARCH_K3 || COMPILE_TEST
 520         help
 521           PWM driver support for the EHRPWM controller found on TI SOCs
 522
 523           To compile this driver as a module, choose M here: the module
 524           will be called pwm-tiehrpwm.
 525
 526 config PWM_TWL
 527         tristate "TWL4030/6030 PWM support"
 528         depends on TWL4030_CORE
 529         help
 530           Generic PWM framework driver for TWL4030/6030.
 531
 532           To compile this driver as a module, choose M here: the module
 533           will be called pwm-twl.
 534
 535 config PWM_TWL_LED
 536         tristate "TWL4030/6030 PWM support for LED drivers"
 537         depends on TWL4030_CORE
 538         help
 539           Generic PWM framework driver for TWL4030/6030 LED terminals.
 540
 541           To compile this driver as a module, choose M here: the module
 542           will be called pwm-twl-led.
 543
 544 config PWM_VT8500
 545         tristate "vt8500 PWM support"
 546         depends on ARCH_VT8500 || COMPILE_TEST
 547         help
 548           Generic PWM framework driver for vt8500.
 549
 550           To compile this driver as a module, choose M here: the module
 551           will be called pwm-vt8500.
 552
 553 config PWM_ZX
 554         tristate "ZTE ZX PWM support"
 555         depends on ARCH_ZX || COMPILE_TEST
 556         help
 557           Generic PWM framework driver for ZTE ZX family SoCs.
 558
 559           To compile this driver as a module, choose M here: the module
 560           will be called pwm-zx.
 561
 562 endif