1# SPDX-License-Identifier: GPL-2.0-only
   2#
   3# GPIO infrastructure and drivers
   4#
   5
   6config ARCH_HAVE_CUSTOM_GPIO_H
   7	bool
   8	help
   9	  Selecting this config option from the architecture Kconfig allows
  10	  the architecture to provide a custom asm/gpio.h implementation
  11	  overriding the default implementations.  New uses of this are
  12	  strongly discouraged.
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  13
  14menuconfig GPIOLIB
  15	bool "GPIO Support"
 
 
  16	help
  17	  This enables GPIO support through the generic GPIO library.
  18	  You only need to enable this if you also want to enable
  19	  one or more of the GPIO drivers below.
  20
  21	  If unsure, say N.
  22
  23if GPIOLIB
  24
  25config GPIOLIB_FASTPATH_LIMIT
  26	int "Maximum number of GPIOs for fast path"
  27	range 32 512
  28	default 512
  29	help
  30	  This adjusts the point at which certain APIs will switch from
  31	  using a stack allocated buffer to a dynamically allocated buffer.
  32
  33	  You shouldn't need to change this unless you really need to
  34	  optimize either stack space or performance. Change this carefully
  35	  since setting an incorrect value could cause stack corruption.
  36
  37config OF_GPIO
  38	def_bool y
  39	depends on OF
  40	depends on HAS_IOMEM
  41
  42config GPIO_ACPI
  43	def_bool y
  44	depends on ACPI
  45
  46config GPIOLIB_IRQCHIP
  47	select IRQ_DOMAIN
  48	bool
  49
  50config DEBUG_GPIO
  51	bool "Debug GPIO calls"
  52	depends on DEBUG_KERNEL
  53	help
  54	  Say Y here to add some extra checks and diagnostics to GPIO calls.
  55	  These checks help ensure that GPIOs have been properly initialized
  56	  before they are used, and that sleeping calls are not made from
  57	  non-sleeping contexts.  They can make bitbanged serial protocols
  58	  slower.  The diagnostics help catch the type of setup errors
  59	  that are most common when setting up new platforms or boards.
  60
  61config GPIO_SYSFS
  62	bool "/sys/class/gpio/... (sysfs interface)" if EXPERT
  63	depends on SYSFS
  64	select GPIO_CDEV # We need to encourage the new ABI
  65	help
  66	  Say Y here to add the legacy sysfs interface for GPIOs.
  67
  68	  This ABI is deprecated. If you want to use GPIO from userspace,
  69	  use the character device /dev/gpiochipN with the appropriate
  70	  ioctl() operations instead.
  71
  72config GPIO_CDEV
  73	bool
  74	prompt "Character device (/dev/gpiochipN) support" if EXPERT
  75	default y
  76	help
  77	  Say Y here to add the character device /dev/gpiochipN interface
  78	  for GPIOs. The character device allows userspace to control GPIOs
  79	  using ioctl() operations.
  80
  81	  Only say N if you are sure that the GPIO character device is not
  82	  required.
 
 
 
  83
  84	  If unsure, say Y.
  85
  86config GPIO_CDEV_V1
  87	bool "Support GPIO ABI Version 1"
  88	default y
  89	depends on GPIO_CDEV
  90	help
  91	  Say Y here to support version 1 of the GPIO CDEV ABI.
  92
  93	  This ABI version is deprecated.
  94	  Please use the latest ABI for new developments.
  95
  96	  If unsure, say Y.
  97
  98config GPIO_GENERIC
  99	depends on HAS_IOMEM # Only for IOMEM drivers
 100	tristate
 101
 102config GPIO_REGMAP
 103	depends on REGMAP
 104	tristate
 105
 106# put drivers in the right section, in alphabetical order
 107
 108# This symbol is selected by both I2C and SPI expanders
 109config GPIO_MAX730X
 110	tristate
 111
 112config GPIO_IDIO_16
 113	tristate
 114	help
 115	  Enables support for the idio-16 library functions. The idio-16 library
 116	  provides functions to facilitate communication with devices within the
 117	  ACCES IDIO-16 family such as the 104-IDIO-16 and the PCI-IDIO-16.
 118
 119	  If built as a module its name will be gpio-idio-16.
 120
 121menu "Memory mapped GPIO drivers"
 122	depends on HAS_IOMEM
 123
 124config GPIO_74XX_MMIO
 125	tristate "GPIO driver for 74xx-ICs with MMIO access"
 126	depends on OF_GPIO
 127	select GPIO_GENERIC
 128	help
 129	  Say yes here to support GPIO functionality for 74xx-compatible ICs
 130	  with MMIO access. Compatible models include:
 131	    1 bit:	741G125 (Input), 741G74 (Output)
 132	    2 bits:	742G125 (Input), 7474 (Output)
 133	    4 bits:	74125 (Input), 74175 (Output)
 134	    6 bits:	74365 (Input), 74174 (Output)
 135	    8 bits:	74244 (Input), 74273 (Output)
 136	    16 bits:	741624 (Input), 7416374 (Output)
 137
 138config GPIO_ALTERA
 139	tristate "Altera GPIO"
 140	depends on OF_GPIO
 141	select GPIOLIB_IRQCHIP
 142	help
 143	  Say Y or M here to build support for the Altera PIO device.
 144
 145	  If driver is built as a module it will be called gpio-altera.
 146
 147config GPIO_AMDPT
 148	tristate "AMD Promontory GPIO support"
 149	depends on ACPI
 150	select GPIO_GENERIC
 151	help
 152	  Driver for GPIO functionality on Promontory IOHub.
 153	  Requires ACPI ASL code to enumerate as a platform device.
 154
 155config GPIO_ASPEED
 156	tristate "Aspeed GPIO support"
 157	depends on (ARCH_ASPEED || COMPILE_TEST) && OF_GPIO
 158	select GPIOLIB_IRQCHIP
 159	help
 160	  Say Y here to support Aspeed AST2400 and AST2500 GPIO controllers.
 161
 162config GPIO_ASPEED_SGPIO
 163	bool "Aspeed SGPIO support"
 164	depends on (ARCH_ASPEED || COMPILE_TEST) && OF_GPIO
 165	select GPIO_GENERIC
 166	select GPIOLIB_IRQCHIP
 167	help
 168	  Say Y here to support Aspeed AST2500 SGPIO functionality.
 169
 170config GPIO_ATH79
 171	tristate "Atheros AR71XX/AR724X/AR913X GPIO support"
 172	default y if ATH79
 173	depends on ATH79 || COMPILE_TEST
 174	select GPIO_GENERIC
 175	select GPIOLIB_IRQCHIP
 176	help
 177	  Select this option to enable GPIO driver for
 178	  Atheros AR71XX/AR724X/AR913X SoC devices.
 179
 180config GPIO_RASPBERRYPI_EXP
 181	tristate "Raspberry Pi 3 GPIO Expander"
 182	default RASPBERRYPI_FIRMWARE
 183	depends on OF_GPIO
 184	# Make sure not 'y' when RASPBERRYPI_FIRMWARE is 'm'. This can only
 185	# happen when COMPILE_TEST=y, hence the added !RASPBERRYPI_FIRMWARE.
 186	depends on (ARCH_BCM2835 && RASPBERRYPI_FIRMWARE) || (COMPILE_TEST && !RASPBERRYPI_FIRMWARE)
 187	help
 188	  Turn on GPIO support for the expander on Raspberry Pi 3 boards, using
 189	  the firmware mailbox to communicate with VideoCore on BCM283x chips.
 190
 191config GPIO_BCM_KONA
 192	bool "Broadcom Kona GPIO"
 193	depends on OF_GPIO && (ARCH_BCM_MOBILE || COMPILE_TEST)
 194	help
 195	  Turn on GPIO support for Broadcom "Kona" chips.
 196
 197config GPIO_BCM_XGS_IPROC
 198	tristate "BRCM XGS iProc GPIO support"
 199	depends on OF_GPIO && (ARCH_BCM_IPROC || COMPILE_TEST)
 200	select GPIO_GENERIC
 201	select GPIOLIB_IRQCHIP
 202	default ARCH_BCM_IPROC
 203	help
 204	  Say yes here to enable GPIO support for Broadcom XGS iProc SoCs.
 205
 206config GPIO_BRCMSTB
 207	tristate "BRCMSTB GPIO support"
 208	default y if (ARCH_BRCMSTB || BMIPS_GENERIC)
 209	depends on OF_GPIO && (ARCH_BRCMSTB || BMIPS_GENERIC || COMPILE_TEST)
 210	select GPIO_GENERIC
 211	select IRQ_DOMAIN
 212	help
 213	  Say yes here to enable GPIO support for Broadcom STB (BCM7XXX) SoCs.
 214
 215config GPIO_CADENCE
 216	tristate "Cadence GPIO support"
 217	depends on OF_GPIO
 218	select GPIO_GENERIC
 219	select GPIOLIB_IRQCHIP
 220	help
 221	  Say yes here to enable support for Cadence GPIO controller.
 222
 223config GPIO_CLPS711X
 224	tristate "CLPS711X GPIO support"
 225	depends on ARCH_CLPS711X || COMPILE_TEST
 226	select GPIO_GENERIC
 227	help
 228	  Say yes here to support GPIO on CLPS711X SoCs.
 229
 230config GPIO_DAVINCI
 231	tristate "TI Davinci/Keystone GPIO support"
 232	default y if ARCH_DAVINCI
 233	depends on (ARM || ARM64) && (ARCH_DAVINCI || ARCH_KEYSTONE || ARCH_K3)
 234	help
 235	  Say yes here to enable GPIO support for TI Davinci/Keystone SoCs.
 236
 237config GPIO_DWAPB
 238	tristate "Synopsys DesignWare APB GPIO driver"
 239	select GPIO_GENERIC
 240	select GPIOLIB_IRQCHIP
 241	help
 242	  Say Y or M here to build support for the Synopsys DesignWare APB
 243	  GPIO block.
 244
 245config GPIO_EIC_SPRD
 246	tristate "Spreadtrum EIC support"
 247	depends on ARCH_SPRD || COMPILE_TEST
 248	depends on OF_GPIO
 249	select GPIOLIB_IRQCHIP
 250	help
 251	  Say yes here to support Spreadtrum EIC device.
 252
 253config GPIO_EM
 254	tristate "Emma Mobile GPIO"
 255	depends on (ARCH_EMEV2 || COMPILE_TEST) && OF_GPIO
 256	help
 257	  Say yes here to support GPIO on Renesas Emma Mobile SoCs.
 258
 259config GPIO_EN7523
 260	tristate "Airoha GPIO support"
 261	depends on ARCH_AIROHA
 262	default ARCH_AIROHA
 263	select GPIO_GENERIC
 264	select GPIOLIB_IRQCHIP
 265	help
 266	  Say Y or M here to support the GPIO controller block on the
 267	  Airoha EN7523 SoC. It supports two banks of 32 GPIOs.
 268
 269config GPIO_EP93XX
 270	def_bool y
 271	depends on ARCH_EP93XX
 272	select GPIO_GENERIC
 273	select GPIOLIB_IRQCHIP
 274
 275config GPIO_EXAR
 276	tristate "Support for GPIO pins on XR17V352/354/358"
 277	depends on SERIAL_8250_EXAR
 278	select REGMAP_MMIO
 279	help
 280	  Selecting this option will enable handling of GPIO pins present
 281	  on Exar XR17V352/354/358 chips.
 282
 283config GPIO_GE_FPGA
 284	bool "GE FPGA based GPIO"
 285	depends on GE_FPGA
 286	select GPIO_GENERIC
 287	help
 288	  Support for common GPIO functionality provided on some GE Single Board
 289	  Computers.
 290
 291	  This driver provides basic support (configure as input or output, read
 292	  and write pin state) for GPIO implemented in a number of GE single
 293	  board computers.
 294
 295config GPIO_FTGPIO010
 296	bool "Faraday FTGPIO010 GPIO"
 297	depends on OF_GPIO
 298	select GPIO_GENERIC
 299	select GPIOLIB_IRQCHIP
 300	default (ARCH_GEMINI || ARCH_MOXART)
 301	help
 302	  Support for common GPIOs from the Faraday FTGPIO010 IP core, found in
 303	  Cortina systems Gemini platforms, Moxa ART and others.
 304
 305config GPIO_GENERIC_PLATFORM
 306	tristate "Generic memory-mapped GPIO controller support (MMIO platform device)"
 307	select GPIO_GENERIC
 308	help
 309	  Say yes here to support basic platform_device memory-mapped GPIO controllers.
 310
 311config GPIO_GRGPIO
 312	tristate "Aeroflex Gaisler GRGPIO support"
 313	depends on OF_GPIO
 314	select GPIO_GENERIC
 315	select IRQ_DOMAIN
 316	help
 317	  Select this to support Aeroflex Gaisler GRGPIO cores from the GRLIB
 318	  VHDL IP core library.
 319
 320config GPIO_HISI
 321	tristate "HiSilicon GPIO controller driver"
 322	depends on ARM64 || COMPILE_TEST
 323	select GPIO_GENERIC
 324	select GPIOLIB_IRQCHIP
 325	help
 326	  Say Y or M here to build support for the HiSilicon GPIO controller
 327	  driver GPIO block.
 328	  This GPIO controller supports double-edge interrupt and multi-core
 329	  concurrent access.
 330
 331config GPIO_HLWD
 332	tristate "Nintendo Wii (Hollywood) GPIO"
 333	depends on OF_GPIO
 334	select GPIO_GENERIC
 335	select GPIOLIB_IRQCHIP
 336	help
 337	  Select this to support the GPIO controller of the Nintendo Wii.
 338
 339	  If unsure, say N.
 340
 341config GPIO_ICH
 342	tristate "Intel ICH GPIO"
 343	depends on X86
 344	depends on LPC_ICH
 345	help
 346	  Say yes here to support the GPIO functionality of a number of Intel
 347	  ICH-based chipsets.  Currently supported devices: ICH6, ICH7, ICH8
 348	  ICH9, ICH10, Series 5/3400 (e.g. Ibex Peak), Series 6/C200 (e.g.
 349	  Cougar Point), NM10 (Tiger Point), and 3100 (Whitmore Lake).
 350
 351	  If unsure, say N.
 352
 353config GPIO_IMX_SCU
 354       def_bool y
 355       depends on IMX_SCU
 356
 357config GPIO_IOP
 358	tristate "Intel IOP GPIO"
 359	depends on ARCH_IOP32X || COMPILE_TEST
 360	select GPIO_GENERIC
 361	help
 362	  Say yes here to support the GPIO functionality of a number of Intel
 363	  IOP32X or IOP33X series of chips.
 364
 365	  If unsure, say N.
 366
 367config GPIO_IXP4XX
 368	bool "Intel IXP4xx GPIO"
 369	depends on ARCH_IXP4XX
 370	depends on OF
 371	select GPIO_GENERIC
 372	select GPIOLIB_IRQCHIP
 373	select IRQ_DOMAIN_HIERARCHY
 374	help
 375	  Say yes here to support the GPIO functionality of a number of Intel
 376	  IXP4xx series of chips.
 377
 378	  If unsure, say N.
 379
 380config GPIO_LOGICVC
 381	tristate "Xylon LogiCVC GPIO support"
 382	depends on MFD_SYSCON && OF
 383	help
 384	  Say yes here to support GPIO functionality of the Xylon LogiCVC
 385	  programmable logic block.
 386
 387config GPIO_LOONGSON
 388	bool "Loongson-2/3 GPIO support"
 389	depends on CPU_LOONGSON2EF || CPU_LOONGSON64
 390	help
 391	  Driver for GPIO functionality on Loongson-2F/3A/3B processors.
 392
 393config GPIO_LPC18XX
 394	tristate "NXP LPC18XX/43XX GPIO support"
 395	default y if ARCH_LPC18XX
 396	depends on OF_GPIO && (ARCH_LPC18XX || COMPILE_TEST)
 397	select IRQ_DOMAIN_HIERARCHY
 398	help
 399	  Select this option to enable GPIO driver for
 400	  NXP LPC18XX/43XX devices.
 401
 402config GPIO_LPC32XX
 403	tristate "NXP LPC32XX GPIO support"
 404	depends on OF_GPIO && (ARCH_LPC32XX || COMPILE_TEST)
 405	help
 406	  Select this option to enable GPIO driver for
 407	  NXP LPC32XX devices.
 408
 409config GPIO_MB86S7X
 410	tristate "GPIO support for Fujitsu MB86S7x Platforms"
 411	help
 412	  Say yes here to support the GPIO controller in Fujitsu MB86S70 SoCs.
 413
 414config GPIO_MENZ127
 415	tristate "MEN 16Z127 GPIO support"
 416	depends on MCB
 417	select GPIO_GENERIC
 418	help
 419	  Say yes here to support the MEN 16Z127 GPIO Controller.
 420
 421config GPIO_MM_LANTIQ
 422	bool "Lantiq Memory mapped GPIOs"
 423	depends on LANTIQ && SOC_XWAY
 424	help
 425	  This enables support for memory mapped GPIOs on the External Bus Unit
 426	  (EBU) found on Lantiq SoCs. The GPIOs are output only as they are
 427	  created by attaching a 16-bit latch to the bus.
 428
 429config GPIO_MPC5200
 430	def_bool y
 431	depends on PPC_MPC52xx
 432
 433config GPIO_MPC8XXX
 434	bool "MPC512x/MPC8xxx/QorIQ GPIO support"
 435	depends on PPC_MPC512x || PPC_MPC831x || PPC_MPC834x || PPC_MPC837x || \
 436		   FSL_SOC_BOOKE || PPC_86xx || ARCH_LAYERSCAPE || ARM || \
 437		   COMPILE_TEST
 438	select GPIO_GENERIC
 439	select IRQ_DOMAIN
 440	help
 441	  Say Y here if you're going to use hardware that connects to the
 442	  MPC512x/831x/834x/837x/8572/8610/QorIQ GPIOs.
 443
 444config GPIO_MT7621
 445	bool "Mediatek MT7621 GPIO Support"
 446	depends on SOC_MT7620 || SOC_MT7621 || COMPILE_TEST
 447	depends on OF_GPIO
 448	select GPIO_GENERIC
 449	select GPIOLIB_IRQCHIP
 450	help
 451	  Say yes here to support the Mediatek MT7621 SoC GPIO device.
 452
 453config GPIO_MVEBU
 454	def_bool y
 455	depends on PLAT_ORION || ARCH_MVEBU
 456	depends on OF_GPIO
 457	select GENERIC_IRQ_CHIP
 458	select REGMAP_MMIO
 459
 460config GPIO_MXC
 461	tristate "i.MX GPIO support"
 462	depends on ARCH_MXC || COMPILE_TEST
 463	select GPIO_GENERIC
 464	select GENERIC_IRQ_CHIP
 465
 466config GPIO_MXS
 467	bool "Freescale MXS GPIO support" if COMPILE_TEST
 468	depends on ARCH_MXS || COMPILE_TEST
 469	default y if ARCH_MXS
 470	select GPIO_GENERIC
 471	select GENERIC_IRQ_CHIP
 472
 473config GPIO_OCTEON
 474	tristate "Cavium OCTEON GPIO"
 475	depends on CAVIUM_OCTEON_SOC
 476	default y
 477	help
 478	  Say yes here to support the on-chip GPIO lines on the OCTEON
 479	  family of SOCs.
 480
 481config GPIO_OMAP
 482	tristate "TI OMAP GPIO support" if ARCH_OMAP2PLUS || COMPILE_TEST
 483	default y if ARCH_OMAP
 484	depends on ARM
 485	select GENERIC_IRQ_CHIP
 486	select GPIOLIB_IRQCHIP
 487	help
 488	  Say yes here to enable GPIO support for TI OMAP SoCs.
 489
 490config GPIO_PL061
 491	tristate "PrimeCell PL061 GPIO support"
 492	depends on ARM_AMBA
 493	select IRQ_DOMAIN
 494	select GPIOLIB_IRQCHIP
 495	help
 496	  Say yes here to support the PrimeCell PL061 GPIO device.
 497
 498config GPIO_PMIC_EIC_SPRD
 499	tristate "Spreadtrum PMIC EIC support"
 500	depends on MFD_SC27XX_PMIC || COMPILE_TEST
 501	depends on OF_GPIO
 502	select GPIOLIB_IRQCHIP
 503	help
 504	  Say yes here to support Spreadtrum PMIC EIC device.
 505
 506config GPIO_PXA
 507	bool "PXA GPIO support"
 508	depends on ARCH_PXA || ARCH_MMP || COMPILE_TEST
 509	help
 510	  Say yes here to support the PXA GPIO device.
 511
 512config GPIO_RCAR
 513	tristate "Renesas R-Car and RZ/G GPIO support"
 514	depends on ARCH_RENESAS || COMPILE_TEST
 515	select GPIOLIB_IRQCHIP
 516	help
 517	  Say yes here to support GPIO on Renesas R-Car or RZ/G SoCs.
 518
 519config GPIO_RDA
 520	bool "RDA Micro GPIO controller support"
 521	depends on ARCH_RDA || COMPILE_TEST
 522	depends on OF_GPIO
 523	select GPIO_GENERIC
 524	select GPIOLIB_IRQCHIP
 525	help
 526	  Say Y here to support RDA Micro GPIO controller.
 527
 528config GPIO_REALTEK_OTTO
 529	tristate "Realtek Otto GPIO support"
 530	depends on MACH_REALTEK_RTL
 531	default MACH_REALTEK_RTL
 532	select GPIO_GENERIC
 533	select GPIOLIB_IRQCHIP
 534	help
 535	  The GPIO controller on the Otto MIPS platform supports up to two
 536	  banks of 32 GPIOs, with edge triggered interrupts. The 32 GPIOs
 537	  are grouped in four 8-bit wide ports.
 538
 539	  When built as a module, the module will be called realtek_otto_gpio.
 540
 541config GPIO_REG
 542	bool
 543	help
 544	  A 32-bit single register GPIO fixed in/out implementation.  This
 545	  can be used to represent any register as a set of GPIO signals.
 546
 547config GPIO_ROCKCHIP
 548	tristate "Rockchip GPIO support"
 549	depends on ARCH_ROCKCHIP || COMPILE_TEST
 550	select GENERIC_IRQ_CHIP
 551	select GPIOLIB_IRQCHIP
 552	default ARCH_ROCKCHIP
 553	help
 554	  Say yes here to support GPIO on Rockchip SoCs.
 555
 556config GPIO_SAMA5D2_PIOBU
 557	tristate "SAMA5D2 PIOBU GPIO support"
 558	depends on MFD_SYSCON
 559	depends on OF_GPIO
 560	depends on ARCH_AT91 || COMPILE_TEST
 561	select GPIO_SYSCON
 562	help
 563	  Say yes here to use the PIOBU pins as GPIOs.
 564
 565	  PIOBU pins on the SAMA5D2 can be used as GPIOs.
 566	  The difference from regular GPIOs is that they
 567	  maintain their value during backup/self-refresh.
 568
 569config GPIO_SIFIVE
 570	bool "SiFive GPIO support"
 571	depends on OF_GPIO
 572	select IRQ_DOMAIN_HIERARCHY
 573	select GPIO_GENERIC
 574	select GPIOLIB_IRQCHIP
 575	select REGMAP_MMIO
 576	help
 577	  Say yes here to support the GPIO device on SiFive SoCs.
 578
 579config GPIO_SIOX
 580	tristate "SIOX GPIO support"
 581	depends on SIOX
 582	select GPIOLIB_IRQCHIP
 583	help
 584	  Say yes here to support SIOX I/O devices. These are units connected
 585	  via a SIOX bus and have a number of fixed-direction I/O lines.
 586
 587config GPIO_SNPS_CREG
 588	bool "Synopsys GPIO via CREG (Control REGisters) driver"
 589	depends on ARC || COMPILE_TEST
 590	depends on OF_GPIO
 591	help
 592	  This driver supports GPIOs via CREG on various Synopsys SoCs.
 593	  This is a single-register MMIO GPIO driver for complex cases
 594	  where only several fields in register belong to GPIO lines and
 595	  each GPIO line owns a field with different length and on/off value.
 596
 597config GPIO_SPEAR_SPICS
 598	bool "ST SPEAr13xx SPI Chip Select as GPIO support"
 599	depends on PLAT_SPEAR
 600	select GENERIC_IRQ_CHIP
 601	help
 602	  Say yes here to support ST SPEAr SPI Chip Select as GPIO device.
 603
 604config GPIO_SPRD
 605	tristate "Spreadtrum GPIO support"
 606	depends on ARCH_SPRD || COMPILE_TEST
 607	depends on OF_GPIO
 608	select GPIOLIB_IRQCHIP
 609	help
 610	  Say yes here to support Spreadtrum GPIO device.
 611
 612config GPIO_STP_XWAY
 613	bool "XWAY STP GPIOs"
 614	depends on SOC_XWAY || COMPILE_TEST
 615	depends on OF_GPIO
 616	help
 617	  This enables support for the Serial To Parallel (STP) unit found on
 618	  XWAY SoC. The STP allows the SoC to drive a shift registers cascade,
 619	  that can be up to 24 bits. This peripheral is aimed at driving LEDs.
 620	  Some of the GPIOs/LEDs can be auto updated by the SoC with DSL and
 621	  phy status.
 622
 623config GPIO_SYSCON
 624	tristate "GPIO based on SYSCON"
 625	depends on MFD_SYSCON && OF
 626	help
 627	  Say yes here to support GPIO functionality though SYSCON driver.
 628
 629config GPIO_TB10X
 630	bool
 631	select GPIO_GENERIC
 632	select GENERIC_IRQ_CHIP
 633	select OF_GPIO
 634
 635config GPIO_TEGRA
 636	tristate "NVIDIA Tegra GPIO support"
 637	default ARCH_TEGRA
 638	depends on ARCH_TEGRA || COMPILE_TEST
 639	depends on OF_GPIO
 640	select GPIOLIB_IRQCHIP
 641	select IRQ_DOMAIN_HIERARCHY
 642	help
 643	  Say yes here to support GPIO pins on NVIDIA Tegra SoCs.
 644
 645config GPIO_TEGRA186
 646	tristate "NVIDIA Tegra186 GPIO support"
 647	default ARCH_TEGRA_186_SOC || ARCH_TEGRA_194_SOC
 648	depends on ARCH_TEGRA_186_SOC || ARCH_TEGRA_194_SOC || COMPILE_TEST
 649	depends on OF_GPIO
 650	select GPIOLIB_IRQCHIP
 651	select IRQ_DOMAIN_HIERARCHY
 652	help
 653	  Say yes here to support GPIO pins on NVIDIA Tegra186 SoCs.
 654
 655config GPIO_TS4800
 656	tristate "TS-4800 DIO blocks and compatibles"
 657	depends on OF_GPIO
 658	depends on SOC_IMX51 || COMPILE_TEST
 659	select GPIO_GENERIC
 660	help
 661	  This driver support TS-4800 FPGA GPIO controllers.
 662
 663config GPIO_THUNDERX
 664	tristate "Cavium ThunderX/OCTEON-TX GPIO"
 665	depends on ARCH_THUNDER || (64BIT && COMPILE_TEST)
 666	depends on PCI_MSI
 667	select GPIOLIB_IRQCHIP
 668	select IRQ_DOMAIN_HIERARCHY
 669	select IRQ_FASTEOI_HIERARCHY_HANDLERS
 670	help
 671	  Say yes here to support the on-chip GPIO lines on the ThunderX
 672	  and OCTEON-TX families of SoCs.
 673
 674config GPIO_UNIPHIER
 675	tristate "UniPhier GPIO support"
 676	depends on ARCH_UNIPHIER || COMPILE_TEST
 677	depends on OF_GPIO
 678	select IRQ_DOMAIN_HIERARCHY
 679	help
 680	  Say yes here to support UniPhier GPIOs.
 681
 682config GPIO_VF610
 683	def_bool y
 684	depends on ARCH_MXC
 685	select GPIOLIB_IRQCHIP
 686	help
 687	  Say yes here to support i.MX or Vybrid vf610 GPIOs.
 688
 689config GPIO_VISCONTI
 690	tristate "Toshiba Visconti GPIO support"
 691	depends on ARCH_VISCONTI || COMPILE_TEST
 692	depends on OF_GPIO
 693	select GPIOLIB_IRQCHIP
 694	select GPIO_GENERIC
 695	select IRQ_DOMAIN_HIERARCHY
 696	help
 697	  Say yes here to support GPIO on Tohisba Visconti.
 698
 699config GPIO_VX855
 700	tristate "VIA VX855/VX875 GPIO"
 701	depends on (X86 || COMPILE_TEST) && PCI
 702	select MFD_CORE
 703	select MFD_VX855
 704	help
 705	  Support access to the VX855/VX875 GPIO lines through the GPIO library.
 706
 707	  This driver provides common support for accessing the device.
 708	  Additional drivers must be enabled in order to use the
 709	  functionality of the device.
 710
 711config GPIO_WCD934X
 712	tristate "Qualcomm Technologies Inc WCD9340/WCD9341 GPIO controller driver"
 713	depends on MFD_WCD934X && OF_GPIO
 714	help
 715         This driver is to support GPIO block found on the Qualcomm Technologies
 716	 Inc WCD9340/WCD9341 Audio Codec.
 717
 718config GPIO_XGENE
 719	bool "APM X-Gene GPIO controller support"
 720	depends on ARM64 && OF_GPIO
 721	help
 722	  This driver is to support the GPIO block within the APM X-Gene SoC
 723	  platform's generic flash controller. The GPIO pins are muxed with
 724	  the generic flash controller's address and data pins. Say yes
 725	  here to enable the GFC GPIO functionality.
 726
 727config GPIO_XGENE_SB
 728	tristate "APM X-Gene GPIO standby controller support"
 729	depends on (ARCH_XGENE || COMPILE_TEST)
 730	select GPIO_GENERIC
 731	select GPIOLIB_IRQCHIP
 732	select IRQ_DOMAIN_HIERARCHY
 733	help
 734	  This driver supports the GPIO block within the APM X-Gene
 735	  Standby Domain. Say yes here to enable the GPIO functionality.
 736
 737config GPIO_XILINX
 738	tristate "Xilinx GPIO support"
 739	select GPIOLIB_IRQCHIP
 740	depends on OF_GPIO
 741	help
 742	  Say yes here to support the Xilinx FPGA GPIO device.
 743
 744config GPIO_XLP
 745	tristate "Cavium ThunderX2 GPIO support"
 746	depends on ARCH_THUNDER2 || COMPILE_TEST
 747	select GPIOLIB_IRQCHIP
 748	help
 749	  This driver provides support for GPIO interface on Cavium's ThunderX2
 750	  CN99XX SoCs (Originally from Netlogic XLP).
 751
 752	  If unsure, say N.
 753
 754config GPIO_XTENSA
 755	bool "Xtensa GPIO32 support"
 756	depends on XTENSA
 757	depends on HAVE_XTENSA_GPIO32
 758	depends on !SMP
 759	help
 760	  Say yes here to support the Xtensa internal GPIO32 IMPWIRE (input)
 761	  and EXPSTATE (output) ports.
 762
 763config GPIO_ZEVIO
 764	bool "LSI ZEVIO SoC memory mapped GPIOs"
 765	depends on ARM && OF_GPIO
 766	help
 767	  Say yes here to support the GPIO controller in LSI ZEVIO SoCs.
 768
 769config GPIO_ZYNQ
 770	tristate "Xilinx Zynq GPIO support"
 771	depends on ARCH_ZYNQ || ARCH_ZYNQMP
 772	select GPIOLIB_IRQCHIP
 773	help
 774	  Say yes here to support Xilinx Zynq GPIO controller.
 775
 776config GPIO_ZYNQMP_MODEPIN
 777	tristate "ZynqMP ps-mode pin GPIO configuration driver"
 778	depends on ZYNQMP_FIRMWARE
 779	default ZYNQMP_FIRMWARE
 780	help
 781	  Say yes here to support the ZynqMP ps-mode pin GPIO configuration
 782	  driver.
 783
 784	  This ps-mode pin GPIO driver is based on GPIO framework. PS_MODE
 785	  is 4-bits boot mode pins. It sets and gets the status of
 786	  the ps-mode pin. Every pin can be configured as input/output.
 787
 788config GPIO_LOONGSON1
 789	tristate "Loongson1 GPIO support"
 790	depends on MACH_LOONGSON32
 791	select GPIO_GENERIC
 792	help
 793	  Say Y or M here to support GPIO on Loongson1 SoCs.
 794
 795config GPIO_AMD_FCH
 796	tristate "GPIO support for AMD Fusion Controller Hub (G-series SOCs)"
 797	help
 798	  This option enables driver for GPIO on AMD's Fusion Controller Hub,
 799	  as found on G-series SOCs (e.g. GX-412TC).
 800
 801	  Note: This driver doesn't register itself automatically, as it
 802	  needs to be provided with platform-specific configuration.
 803	  (See e.g. CONFIG_PCENGINES_APU2.)
 804
 805config GPIO_MSC313
 806	bool "MStar MSC313 GPIO support"
 807	depends on ARCH_MSTARV7
 808	default ARCH_MSTARV7
 809	select GPIOLIB_IRQCHIP
 810	select IRQ_DOMAIN_HIERARCHY
 811	help
 812	  Say Y here to support the main GPIO block on MStar/SigmaStar
 813	  ARMv7-based SoCs.
 814
 815config GPIO_IDT3243X
 816	tristate "IDT 79RC3243X GPIO support"
 817	depends on MIKROTIK_RB532 || COMPILE_TEST
 818	select GPIO_GENERIC
 819	select GPIOLIB_IRQCHIP
 820	help
 821	  Select this option to enable GPIO driver for
 822	  IDT 79RC3243X-based devices like Mikrotik RB532.
 823
 824	  To compile this driver as a module, choose M here: the module will
 825	  be called gpio-idt3243x.
 826
 827endmenu
 828
 829menu "Port-mapped I/O GPIO drivers"
 830	depends on X86 # Unconditional I/O space access
 831
 832config GPIO_I8255
 833	tristate
 
 834	help
 835	  Enables support for the i8255 interface library functions. The i8255
 836	  interface library provides functions to facilitate communication with
 837	  interfaces compatible with the venerable Intel 8255 Programmable
 838	  Peripheral Interface (PPI). The Intel 8255 PPI chip was first released
 839	  in the early 1970s but compatible interfaces are nowadays typically
 840	  found embedded in larger VLSI processing chips and FPGA components.
 841
 842	  If built as a module its name will be gpio-i8255.
 843
 844config GPIO_104_DIO_48E
 845	tristate "ACCES 104-DIO-48E GPIO support"
 846	depends on PC104
 847	select ISA_BUS_API
 848	select GPIOLIB_IRQCHIP
 849	select GPIO_I8255
 850	help
 851	  Enables GPIO support for the ACCES 104-DIO-48E series (104-DIO-48E,
 852	  104-DIO-24E). The base port addresses for the devices may be
 853	  configured via the base module parameter. The interrupt line numbers
 854	  for the devices may be configured via the irq module parameter.
 855
 856config GPIO_104_IDIO_16
 857	tristate "ACCES 104-IDIO-16 GPIO support"
 858	depends on PC104
 859	select ISA_BUS_API
 860	select GPIOLIB_IRQCHIP
 861	select GPIO_IDIO_16
 862	help
 863	  Enables GPIO support for the ACCES 104-IDIO-16 family (104-IDIO-16,
 864	  104-IDIO-16E, 104-IDO-16, 104-IDIO-8, 104-IDIO-8E, 104-IDO-8). The
 865	  base port addresses for the devices may be configured via the base
 866	  module parameter. The interrupt line numbers for the devices may be
 867	  configured via the irq module parameter.
 868
 869config GPIO_104_IDI_48
 870	tristate "ACCES 104-IDI-48 GPIO support"
 871	depends on PC104
 872	select ISA_BUS_API
 873	select GPIOLIB_IRQCHIP
 874	select GPIO_I8255
 875	help
 876	  Enables GPIO support for the ACCES 104-IDI-48 family (104-IDI-48A,
 877	  104-IDI-48AC, 104-IDI-48B, 104-IDI-48BC). The base port addresses for
 878	  the devices may be configured via the base module parameter. The
 879	  interrupt line numbers for the devices may be configured via the irq
 880	  module parameter.
 881
 882config GPIO_F7188X
 883	tristate "Fintek and Nuvoton Super-I/O GPIO support"
 884	help
 885	  This option enables support for GPIOs found on Fintek Super-I/O
 886	  chips F71869, F71869A, F71882FG, F71889F and F81866.
 887	  As well as Nuvoton Super-I/O chip NCT6116D.
 888
 889	  To compile this driver as a module, choose M here: the module will
 890	  be called f7188x-gpio.
 891
 892config GPIO_GPIO_MM
 893	tristate "Diamond Systems GPIO-MM GPIO support"
 894	depends on PC104
 895	select ISA_BUS_API
 896	select GPIO_I8255
 897	help
 898	  Enables GPIO support for the Diamond Systems GPIO-MM and GPIO-MM-12.
 899
 900	  The Diamond Systems GPIO-MM device features 48 lines of digital I/O
 901	  via the emulation of dual 82C55A PPI chips. This driver provides GPIO
 902	  support for these 48 channels of digital I/O.
 903
 904	  The base port addresses for the devices may be configured via the base
 905	  array module parameter.
 906
 907config GPIO_IT87
 908	tristate "IT87xx GPIO support"
 909	help
 910	  Say yes here to support GPIO functionality of IT87xx Super I/O chips.
 911
 912	  This driver is tested with ITE IT8728 and IT8732 Super I/O chips, and
 913	  supports the IT8761E, IT8613, IT8620E, and IT8628E Super I/O chips as
 914	  well.
 915
 916	  To compile this driver as a module, choose M here: the module will
 917	  be called gpio_it87.
 918
 919config GPIO_SCH
 920	tristate "Intel SCH/TunnelCreek/Centerton/Quark X1000 GPIO"
 921	depends on (X86 || COMPILE_TEST) && ACPI
 922	depends on LPC_SCH
 923	select GPIOLIB_IRQCHIP
 924	help
 925	  Say yes here to support GPIO interface on Intel Poulsbo SCH,
 926	  Intel Tunnel Creek processor, Intel Centerton processor or
 927	  Intel Quark X1000 SoC.
 928
 929	  The Intel SCH contains a total of 14 GPIO pins. Ten GPIOs are
 930	  powered by the core power rail and are turned off during sleep
 931	  modes (S3 and higher). The remaining four GPIOs are powered by
 932	  the Intel SCH suspend power supply. These GPIOs remain
 933	  active during S3. The suspend-powered GPIOs can be used to wake the
 934	  system from the Suspend-to-RAM state.
 935
 936	  The Intel Tunnel Creek processor has 5 GPIOs powered by the
 937	  core power rail and 9 from suspend power supply.
 938
 939	  The Intel Centerton processor has a total of 30 GPIO pins.
 940	  Twenty-one are powered by the core power rail and 9 from the
 941	  suspend power supply.
 942
 943	  The Intel Quark X1000 SoC has 2 GPIOs powered by the core
 944	  power well and 6 from the suspend power well.
 945
 946config GPIO_SCH311X
 947	tristate "SMSC SCH311x SuperI/O GPIO"
 948	help
 949	  Driver to enable the GPIOs found on SMSC SMSC SCH3112, SCH3114 and
 950	  SCH3116 "Super I/O" chipsets.
 951
 952	  To compile this driver as a module, choose M here: the module will
 953	  be called gpio-sch311x.
 954
 955config GPIO_TS5500
 956	tristate "TS-5500 DIO blocks and compatibles"
 957	depends on TS5500 || COMPILE_TEST
 958	help
 959	  This driver supports Digital I/O exposed by pin blocks found on some
 960	  Technologic Systems platforms. It includes, but is not limited to, 3
 961	  blocks of the TS-5500: DIO1, DIO2 and the LCD port, and the TS-5600
 962	  LCD port.
 963
 964config GPIO_WINBOND
 965	tristate "Winbond Super I/O GPIO support"
 966	select ISA_BUS_API
 967	help
 968	  This option enables support for GPIOs found on Winbond Super I/O
 969	  chips.
 970	  Currently, only W83627UHG (also known as Nuvoton NCT6627UD) is
 971	  supported.
 972
 973	  You will need to provide a module parameter "gpios", or a
 974	  boot-time parameter "gpio_winbond.gpios" with a bitmask of GPIO
 975	  ports to enable (bit 0 is GPIO1, bit 1 is GPIO2, etc.).
 976
 977	  To compile this driver as a module, choose M here: the module will
 978	  be called gpio-winbond.
 979
 980config GPIO_WS16C48
 981	tristate "WinSystems WS16C48 GPIO support"
 982	select ISA_BUS_API
 983	select GPIOLIB_IRQCHIP
 984	help
 985	  Enables GPIO support for the WinSystems WS16C48. The base port
 986	  addresses for the devices may be configured via the base module
 987	  parameter. The interrupt line numbers for the devices may be
 988	  configured via the irq module parameter.
 989
 990endmenu
 991
 992menu "I2C GPIO expanders"
 993	depends on I2C
 
 994
 995config GPIO_ADNP
 996	tristate "Avionic Design N-bit GPIO expander"
 997	depends on OF_GPIO
 998	select GPIOLIB_IRQCHIP
 999	help
1000	  This option enables support for N GPIOs found on Avionic Design
1001	  I2C GPIO expanders. The register space will be extended by powers
1002	  of two, so the controller will need to accommodate for that. For
1003	  example: if a controller provides 48 pins, 6 registers will be
1004	  enough to represent all pins, but the driver will assume a
1005	  register layout for 64 pins (8 registers).
1006
1007config GPIO_GW_PLD
1008	tristate "Gateworks PLD GPIO Expander"
1009	depends on OF_GPIO
1010	help
1011	  Say yes here to provide access to the Gateworks I2C PLD GPIO
1012	  Expander. This is used at least on the Cambria GW2358-4.
1013
1014config GPIO_MAX7300
1015	tristate "Maxim MAX7300 GPIO expander"
 
1016	select GPIO_MAX730X
1017	help
1018	  GPIO driver for Maxim MAX7300 I2C-based GPIO expander.
1019
1020config GPIO_MAX732X
1021	tristate "MAX7319, MAX7320-7327 I2C Port Expanders"
 
1022	help
1023	  Say yes here to support the MAX7319, MAX7320-7327 series of I2C
1024	  Port Expanders. Each IO port on these chips has a fixed role of
1025	  Input (designated by 'I'), Push-Pull Output ('O'), or Open-Drain
1026	  Input and Output (designed by 'P'). The combinations are listed
1027	  below:
1028
1029	  8 bits:       max7319 (8I), max7320 (8O), max7321 (8P),
1030	                max7322 (4I4O), max7323 (4P4O)
1031
1032	  16 bits:      max7324 (8I8O), max7325 (8P8O),
1033	                max7326 (4I12O), max7327 (4P12O)
1034
1035	  Board setup code must specify the model to use, and the start
1036	  number for these GPIOs.
1037
1038config GPIO_MAX732X_IRQ
1039	bool "Interrupt controller support for MAX732x"
1040	depends on GPIO_MAX732X=y
1041	select GPIOLIB_IRQCHIP
1042	help
1043	  Say yes here to enable the max732x to be used as an interrupt
1044	  controller. It requires the driver to be built in the kernel.
1045
1046config GPIO_PCA953X
1047	tristate "PCA95[357]x, PCA9698, TCA64xx, and MAX7310 I/O ports"
1048	select REGMAP_I2C
1049	help
1050	  Say yes here to provide access to several register-oriented
1051	  SMBus I/O expanders, made mostly by NXP or TI.  Compatible
1052	  models include:
1053
1054	  4 bits:       pca9536, pca9537
1055
1056	  8 bits:       max7310, max7315, pca6107, pca9534, pca9538, pca9554,
1057	                pca9556, pca9557, pca9574, tca6408, tca9554, xra1202
1058
1059	  16 bits:      max7312, max7313, pca9535, pca9539, pca9555, pca9575,
1060	                tca6416
1061
1062	  24 bits:      tca6424
 
1063
1064	  40 bits:      pca9505, pca9698
1065
1066config GPIO_PCA953X_IRQ
1067	bool "Interrupt controller support for PCA953x"
1068	depends on GPIO_PCA953X
1069	select GPIOLIB_IRQCHIP
1070	help
1071	  Say yes here to enable the pca953x to be used as an interrupt
1072	  controller.
1073
1074config GPIO_PCA9570
1075	tristate "PCA9570 4-Bit I2C GPO expander"
1076	help
1077	  Say yes here to enable the GPO driver for the NXP PCA9570 chip.
1078
1079	  To compile this driver as a module, choose M here: the module will
1080	  be called gpio-pca9570.
1081
1082config GPIO_PCF857X
1083	tristate "PCF857x, PCA{85,96}7x, and MAX732[89] I2C GPIO expanders"
1084	select GPIOLIB_IRQCHIP
1085	select IRQ_DOMAIN
1086	help
1087	  Say yes here to provide access to most "quasi-bidirectional" I2C
1088	  GPIO expanders used for additional digital outputs or inputs.
1089	  Most of these parts are from NXP, though TI is a second source for
1090	  some of them.  Compatible models include:
1091
1092	  8 bits:   pcf8574, pcf8574a, pca8574, pca8574a,
1093	            pca9670, pca9672, pca9674, pca9674a,
1094	            max7328, max7329
1095
1096	  16 bits:  pcf8575, pcf8575c, pca8575,
1097	            pca9671, pca9673, pca9675
1098
1099	  Your board setup code will need to declare the expanders in
1100	  use, and assign numbers to the GPIOs they expose.  Those GPIOs
1101	  can then be used from drivers and other kernel code, just like
1102	  other GPIOs, but only accessible from task contexts.
1103
1104	  This driver provides an in-kernel interface to those GPIOs using
1105	  platform-neutral GPIO calls.
1106
1107config GPIO_TPIC2810
1108	tristate "TPIC2810 8-Bit I2C GPO expander"
1109	help
1110	  Say yes here to enable the GPO driver for the TI TPIC2810 chip.
1111
1112	  To compile this driver as a module, choose M here: the module will
1113	  be called gpio-tpic2810.
1114
1115config GPIO_TS4900
1116	tristate "Technologic Systems FPGA I2C GPIO"
1117	depends on SOC_IMX6 || COMPILE_TEST
1118	select REGMAP_I2C
1119	help
1120	  Say yes here to enabled the GPIO driver for Technologic's FPGA core.
1121	  Series supported include TS-4100, TS-4900, TS-7970 and TS-7990.
1122
1123endmenu
1124
1125menu "MFD GPIO expanders"
1126
1127config GPIO_ADP5520
1128	tristate "GPIO Support for ADP5520 PMIC"
1129	depends on PMIC_ADP5520
1130	help
1131	  This option enables support for on-chip GPIO found
1132	  on Analog Devices ADP5520 PMICs.
1133
1134config GPIO_ALTERA_A10SR
1135	tristate "Altera Arria10 System Resource GPIO"
1136	depends on MFD_ALTERA_A10SR
1137	help
1138	  Driver for Arria10 Development Kit GPIO expansion which
1139	  includes reads of pushbuttons and DIP switches as well
1140	  as writes to LEDs.
1141
1142config GPIO_ARIZONA
1143	tristate "Wolfson Microelectronics Arizona class devices"
1144	depends on MFD_ARIZONA
1145	help
1146	  Support for GPIOs on Wolfson Arizona class devices.
 
1147
1148config GPIO_BD71815
1149	tristate "ROHM BD71815 PMIC GPIO support"
1150	depends on MFD_ROHM_BD71828
1151	help
1152	  Support for GPO(s) on ROHM BD71815 PMIC. There are two GPOs
1153	  available on the ROHM PMIC.
1154
1155	  This driver can also be built as a module. If so, the module
1156	  will be called gpio-bd71815.
1157
1158config GPIO_BD71828
1159	tristate "ROHM BD71828 GPIO support"
1160	depends on MFD_ROHM_BD71828
1161	help
1162	  Support for GPIOs on ROHM BD71828 PMIC. There are three GPIOs
1163	  available on the ROHM PMIC in total. The GPIOs are limited to
1164	  outputs only and pins must be configured to GPIO outputs by
1165	  OTP. Enable this only if you want to use these pins as outputs.
1166
1167	  This driver can also be built as a module. If so, the module
1168	  will be called gpio-bd71828.
1169
1170config GPIO_BD9571MWV
1171	tristate "ROHM BD9571 GPIO support"
1172	depends on MFD_BD9571MWV
1173	help
1174	  Support for GPIOs on ROHM BD9571 PMIC. There are two GPIOs
1175	  available on the ROHM PMIC in total, both of which can also
1176	  generate interrupts.
1177
1178	  This driver can also be built as a module. If so, the module
1179	  will be called gpio-bd9571mwv.
1180
1181config GPIO_CRYSTAL_COVE
1182	tristate "GPIO support for Crystal Cove PMIC"
1183	depends on (X86 || COMPILE_TEST) && INTEL_SOC_PMIC
1184	select GPIOLIB_IRQCHIP
1185	help
1186	  Support for GPIO pins on Crystal Cove PMIC.
1187
1188	  Say Yes if you have a Intel SoC-based tablet with Crystal Cove PMIC
1189	  inside.
1190
1191	  This driver can also be built as a module. If so, the module will be
1192	  called gpio-crystalcove.
1193
1194config GPIO_CS5535
1195	tristate "AMD CS5535/CS5536 GPIO support"
1196	depends on X86 || MIPS || COMPILE_TEST
1197	depends on MFD_CS5535
1198	help
1199	  The AMD CS5535 and CS5536 southbridges support 28 GPIO pins that
1200	  can be used for quite a number of things.  The CS5535/6 is found on
1201	  AMD Geode and Lemote Yeeloong devices.
1202
1203	  If unsure, say N.
1204
1205config GPIO_DA9052
1206	tristate "Dialog DA9052 GPIO"
1207	depends on PMIC_DA9052
1208	help
1209	  Say yes here to enable the GPIO driver for the DA9052 chip.
1210
1211config GPIO_DA9055
1212	tristate "Dialog Semiconductor DA9055 GPIO"
1213	depends on MFD_DA9055
1214	help
1215	  Say yes here to enable the GPIO driver for the DA9055 chip.
1216
1217	  The Dialog DA9055 PMIC chip has 3 GPIO pins that can be
1218	  be controlled by this driver.
1219
1220	  If driver is built as a module it will be called gpio-da9055.
1221
1222config GPIO_DLN2
1223	tristate "Diolan DLN2 GPIO support"
1224	depends on MFD_DLN2
1225	select GPIOLIB_IRQCHIP
1226
1227	help
1228	  Select this option to enable GPIO driver for the Diolan DLN2
1229	  board.
1230
1231	  This driver can also be built as a module. If so, the module
1232	  will be called gpio-dln2.
1233
1234config HTC_EGPIO
1235	bool "HTC EGPIO support"
1236	depends on ARM
1237	help
1238	  This driver supports the CPLD egpio chip present on
1239	  several HTC phones.  It provides basic support for input
1240	  pins, output pins, and IRQs.
1241
1242config GPIO_JANZ_TTL
1243	tristate "Janz VMOD-TTL Digital IO Module"
1244	depends on MFD_JANZ_CMODIO
1245	help
1246	  This enables support for the Janz VMOD-TTL Digital IO module.
1247	  This driver provides support for driving the pins in output
1248	  mode only. Input mode is not supported.
1249
1250config GPIO_KEMPLD
1251	tristate "Kontron ETX / COMexpress GPIO"
1252	depends on MFD_KEMPLD
1253	help
1254	  This enables support for the PLD GPIO interface on some Kontron ETX
1255	  and COMexpress (ETXexpress) modules.
1256
1257	  This driver can also be built as a module. If so, the module will be
1258	  called gpio-kempld.
1259
1260config GPIO_LP3943
1261	tristate "TI/National Semiconductor LP3943 GPIO expander"
1262	depends on MFD_LP3943
1263	help
1264	  GPIO driver for LP3943 MFD.
1265	  LP3943 can be used as a GPIO expander which provides up to 16 GPIOs.
1266	  Open drain outputs are required for this usage.
1267
1268config GPIO_LP873X
1269	tristate "TI LP873X GPO"
1270	depends on MFD_TI_LP873X
1271	help
1272	  This driver supports the GPO on TI Lp873x PMICs. 2 GPOs are present
1273	  on LP873X PMICs.
1274
1275	  This driver can also be built as a module. If so, the module will be
1276	  called gpio-lp873x.
1277
1278config GPIO_LP87565
1279	tristate "TI LP87565 GPIO"
1280	depends on MFD_TI_LP87565
1281	help
1282	  This driver supports the GPIO on TI Lp873565 PMICs. 3 GPIOs are present
1283	  on LP87565 PMICs.
1284
1285	  This driver can also be built as a module. If so, the module will be
1286	  called gpio-lp87565.
1287
1288config GPIO_MADERA
1289	tristate "Cirrus Logic Madera class codecs"
1290	depends on PINCTRL_MADERA
1291	help
1292	  Support for GPIOs on Cirrus Logic Madera class codecs.
1293
1294config GPIO_MAX77620
1295	tristate "GPIO support for PMIC MAX77620 and MAX20024"
1296	depends on MFD_MAX77620
1297	select GPIOLIB_IRQCHIP
1298	help
1299	  GPIO driver for MAX77620 and MAX20024 PMIC from Maxim Semiconductor.
1300	  MAX77620 PMIC has 8 pins that can be configured as GPIOs. The
1301	  driver also provides interrupt support for each of the GPIOs.
1302	  Say yes here to enable the max77620 to be used as GPIO controller.
1303
1304config GPIO_MAX77650
1305	tristate "Maxim MAX77650/77651 GPIO support"
1306	depends on MFD_MAX77650
1307	help
1308	  GPIO driver for MAX77650/77651 PMIC from Maxim Semiconductor.
1309	  These chips have a single pin that can be configured as GPIO.
1310
1311config GPIO_PALMAS
1312	bool "TI PALMAS series PMICs GPIO"
1313	depends on MFD_PALMAS
1314	help
1315	  Select this option to enable GPIO driver for the TI PALMAS
1316	  series chip family.
1317
1318config GPIO_RC5T583
1319	bool "RICOH RC5T583 GPIO"
1320	depends on MFD_RC5T583
1321	help
1322	  Select this option to enable GPIO driver for the Ricoh RC5T583
1323	  chip family.
1324	  This driver provides the support for driving/reading the GPIO pins
1325	  of RC5T583 device through standard GPIO library.
1326
1327config GPIO_SL28CPLD
1328	tristate "Kontron sl28cpld GPIO support"
1329	depends on MFD_SL28CPLD || COMPILE_TEST
1330	select GPIO_REGMAP
1331	select GPIOLIB_IRQCHIP
1332	select REGMAP_IRQ
1333	help
1334	  This enables support for the GPIOs found on the Kontron sl28 CPLD.
1335
1336	  This driver can also be built as a module. If so, the module will be
1337	  called gpio-sl28cpld.
1338
1339config GPIO_STMPE
1340	bool "STMPE GPIOs"
1341	depends on MFD_STMPE
1342	depends on OF_GPIO
1343	select GPIOLIB_IRQCHIP
1344	help
1345	  This enables support for the GPIOs found on the STMPE I/O
1346	  Expanders.
1347
1348config GPIO_TC3589X
1349	bool "TC3589X GPIOs"
1350	depends on MFD_TC3589X
1351	depends on OF_GPIO
1352	select GPIOLIB_IRQCHIP
1353	help
1354	  This enables support for the GPIOs found on the TC3589X
1355	  I/O Expander.
1356
1357config GPIO_TIMBERDALE
1358	bool "Support for timberdale GPIO IP"
1359	depends on MFD_TIMBERDALE
1360	help
1361	Add support for the GPIO IP in the timberdale FPGA.
1362
1363config GPIO_TN48M_CPLD
1364	tristate "Delta Networks TN48M switch CPLD GPIO driver"
1365	depends on MFD_TN48M_CPLD
1366	select GPIO_REGMAP
1367	help
1368	  This enables support for the GPIOs found on the Delta
1369	  Networks TN48M switch Lattice CPLD. It provides 12 pins in total,
1370	  they are input-only or output-only type.
1371
1372	  This driver can also be built as a module. If so, the
1373	  module will be called gpio-tn48m.
1374
1375config GPIO_TPS65086
1376	tristate "TI TPS65086 GPO"
1377	depends on MFD_TPS65086
1378	help
1379	  This driver supports the GPO on TI TPS65086x PMICs.
1380
1381config GPIO_TPS65218
1382	tristate "TPS65218 GPIO"
1383	depends on MFD_TPS65218
1384	help
1385	  Select this option to enable GPIO driver for the TPS65218
1386	  chip family.
1387
1388config GPIO_TPS6586X
1389	bool "TPS6586X GPIO"
1390	depends on MFD_TPS6586X
1391	help
1392	  Select this option to enable GPIO driver for the TPS6586X
1393	  chip family.
1394
1395config GPIO_TPS65910
1396	bool "TPS65910 GPIO"
1397	depends on MFD_TPS65910
1398	help
1399	  Select this option to enable GPIO driver for the TPS65910
1400	  chip family.
1401
1402config GPIO_TPS65912
1403	tristate "TI TPS65912 GPIO"
1404	depends on MFD_TPS65912
1405	help
1406	  This driver supports TPS65912 GPIO chip.
1407
1408config GPIO_TPS68470
1409	tristate "TPS68470 GPIO"
1410	depends on INTEL_SKL_INT3472
1411	help
1412	  Select this option to enable GPIO driver for the TPS68470
1413	  chip family.
1414	  There are 7 GPIOs and few sensor-related GPIOs supported
1415	  by the TPS68470. While the 7 GPIOs can be configured as
1416	  input or output as appropriate, the sensor related GPIOs
1417	  are "output only" GPIOs.
1418
1419config GPIO_TQMX86
1420	tristate "TQ-Systems QTMX86 GPIO"
1421	depends on MFD_TQMX86 || COMPILE_TEST
1422	depends on HAS_IOPORT_MAP
1423	select GPIOLIB_IRQCHIP
1424	help
1425	  This driver supports GPIO on the TQMX86 IO controller.
1426
1427config GPIO_TWL4030
1428	tristate "TWL4030, TWL5030, and TPS659x0 GPIOs"
1429	depends on TWL4030_CORE
1430	help
1431	  Say yes here to access the GPIO signals of various multi-function
1432	  power management chips from Texas Instruments.
1433
1434config GPIO_TWL6040
1435	tristate "TWL6040 GPO"
1436	depends on TWL6040_CORE
1437	help
1438	  Say yes here to access the GPO signals of twl6040
1439	  audio chip from Texas Instruments.
1440
1441config GPIO_UCB1400
1442	tristate "Philips UCB1400 GPIO"
1443	depends on UCB1400_CORE
1444	help
1445	  This enables support for the Philips UCB1400 GPIO pins.
1446	  The UCB1400 is an AC97 audio codec.
1447
1448config GPIO_WHISKEY_COVE
1449	tristate "GPIO support for Whiskey Cove PMIC"
1450	depends on (X86 || COMPILE_TEST) && INTEL_SOC_PMIC_BXTWC
1451	select GPIOLIB_IRQCHIP
1452	help
1453	  Support for GPIO pins on Whiskey Cove PMIC.
1454
1455	  Say Yes if you have an Intel SoC-based tablet with Whiskey Cove PMIC
1456	  inside.
1457
1458	  This driver can also be built as a module. If so, the module will be
1459	  called gpio-wcove.
1460
1461config GPIO_WM831X
1462	tristate "WM831x GPIOs"
1463	depends on MFD_WM831X
1464	help
1465	  Say yes here to access the GPIO signals of WM831x power management
1466	  chips from Wolfson Microelectronics.
1467
1468config GPIO_WM8350
1469	tristate "WM8350 GPIOs"
1470	depends on MFD_WM8350
1471	help
1472	  Say yes here to access the GPIO signals of WM8350 power management
1473	  chips from Wolfson Microelectronics.
1474
1475config GPIO_WM8994
1476	tristate "WM8994 GPIOs"
1477	depends on MFD_WM8994
1478	help
1479	  Say yes here to access the GPIO signals of WM8994 audio hub
1480	  CODECs from Wolfson Microelectronics.
1481
1482endmenu
 
 
 
 
 
1483
1484menu "PCI GPIO expanders"
1485	depends on PCI
 
 
 
 
1486
1487config GPIO_AMD8111
1488	tristate "AMD 8111 GPIO driver"
1489	depends on X86 || COMPILE_TEST
1490	depends on HAS_IOPORT_MAP
1491	help
1492	  The AMD 8111 southbridge contains 32 GPIO pins which can be used.
1493
1494	  Note that usually system firmware/ACPI handles GPIO pins on their
1495	  own and users might easily break their systems with uncareful usage
1496	  of this driver!
1497
1498	  If unsure, say N
 
 
 
 
 
 
 
 
 
 
1499
1500config GPIO_BT8XX
1501	tristate "BT8XX GPIO abuser"
1502	depends on VIDEO_BT848=n
1503	help
1504	  The BT8xx frame grabber chip has 24 GPIO pins that can be abused
1505	  as a cheap PCI GPIO card.
1506
1507	  This chip can be found on Miro, Hauppauge and STB TV-cards.
1508
1509	  The card needs to be physically altered for using it as a
1510	  GPIO card. For more information on how to build a GPIO card
1511	  from a BT8xx TV card, see the documentation file at
1512	  Documentation/driver-api/gpio/bt8xxgpio.rst
1513
1514	  If unsure, say N.
1515
1516config GPIO_MERRIFIELD
1517	tristate "Intel Merrifield GPIO support"
1518	depends on X86_INTEL_MID
1519	select GPIOLIB_IRQCHIP
1520	help
1521	  Say Y here to support Intel Merrifield GPIO.
1522
1523config GPIO_MLXBF
1524	tristate "Mellanox BlueField SoC GPIO"
1525	depends on (MELLANOX_PLATFORM && ARM64 && ACPI) || (64BIT && COMPILE_TEST)
1526	select GPIO_GENERIC
1527	help
1528	  Say Y here if you want GPIO support on Mellanox BlueField SoC.
1529
1530config GPIO_MLXBF2
1531	tristate "Mellanox BlueField 2 SoC GPIO"
1532	depends on (MELLANOX_PLATFORM && ARM64 && ACPI) || (64BIT && COMPILE_TEST)
1533	select GPIO_GENERIC
1534	select GPIOLIB_IRQCHIP
1535	help
1536	  Say Y here if you want GPIO support on Mellanox BlueField 2 SoC.
 
 
 
 
 
 
 
 
1537
1538config GPIO_ML_IOH
1539	tristate "OKI SEMICONDUCTOR ML7213 IOH GPIO support"
1540	depends on X86 || COMPILE_TEST
1541	select GENERIC_IRQ_CHIP
1542	help
1543	  ML7213 is companion chip for Intel Atom E6xx series.
1544	  This driver can be used for OKI SEMICONDUCTOR ML7213 IOH (Input/Output
1545	  Hub) which is for IVI (In-Vehicle Infotainment) use.
1546	  This driver can access the IOH's GPIO device.
1547
1548config GPIO_PCH
1549	tristate "Intel EG20T PCH/LAPIS Semiconductor IOH (ML7223/ML7831) GPIO"
1550	depends on X86_32 || MIPS || COMPILE_TEST
1551	select GENERIC_IRQ_CHIP
1552	help
1553	  This driver is for PCH (Platform Controller Hub) GPIO of Intel Topcliff,
1554	  which is an IOH (Input/Output Hub) for x86 embedded processor.
1555	  This driver can access PCH GPIO device.
1556
1557	  This driver also can be used for LAPIS Semiconductor IOH (Input/
1558	  Output Hub), ML7223 and ML7831.
1559	  ML7223 IOH is for MP (Media Phone) use.
1560	  ML7831 IOH is for general purpose use.
1561	  ML7223/ML7831 is companion chip for Intel Atom E6xx series.
1562	  ML7223/ML7831 is completely compatible for Intel EG20T PCH.
1563
1564config GPIO_PCI_IDIO_16
1565	tristate "ACCES PCI-IDIO-16 GPIO support"
1566	select GPIOLIB_IRQCHIP
1567	select GPIO_IDIO_16
1568	help
1569	  Enables GPIO support for the ACCES PCI-IDIO-16. An interrupt is
1570	  generated when any of the inputs change state (low to high or high to
1571	  low). Input filter control is not supported by this driver, and the
1572	  input filters are deactivated by this driver.
1573
1574config GPIO_PCIE_IDIO_24
1575	tristate "ACCES PCIe-IDIO-24 GPIO support"
1576	select GPIOLIB_IRQCHIP
1577	help
1578	  Enables GPIO support for the ACCES PCIe-IDIO-24 family (PCIe-IDIO-24,
1579	  PCIe-IDI-24, PCIe-IDO-24, PCIe-IDIO-12). An interrupt is generated
1580	  when any of the inputs change state (low to high or high to low).
1581	  Input filter control is not supported by this driver, and the input
1582	  filters are deactivated by this driver.
1583
1584config GPIO_RDC321X
1585	tristate "RDC R-321x GPIO support"
 
 
1586	select MFD_CORE
1587	select MFD_RDC321X
1588	help
1589	  Support for the RDC R321x SoC GPIOs over southbridge
1590	  PCI configuration space.
1591
1592config GPIO_SODAVILLE
1593	bool "Intel Sodaville GPIO support"
1594	depends on X86 && OF
1595	select GPIO_GENERIC
1596	select GENERIC_IRQ_CHIP
1597	help
1598	  Say Y here to support Intel Sodaville GPIO.
1599
1600endmenu
1601
1602menu "SPI GPIO expanders"
1603	depends on SPI_MASTER
1604
1605config GPIO_74X164
1606	tristate "74x164 serial-in/parallel-out 8-bits shift register"
1607	depends on OF_GPIO
1608	help
1609	  Driver for 74x164 compatible serial-in/parallel-out 8-outputs
1610	  shift registers. This driver can be used to provide access
1611	  to more GPIO outputs.
1612
1613config GPIO_MAX3191X
1614	tristate "Maxim MAX3191x industrial serializer"
1615	select CRC8
1616	help
1617	  GPIO driver for Maxim MAX31910, MAX31911, MAX31912, MAX31913,
1618	  MAX31953 and MAX31963 industrial serializer, a daisy-chainable
1619	  chip to make 8 digital 24V inputs available via SPI.  Supports
1620	  CRC checksums to guard against electromagnetic interference,
1621	  as well as undervoltage and overtemperature detection.
1622
1623config GPIO_MAX7301
1624	tristate "Maxim MAX7301 GPIO expander"
 
1625	select GPIO_MAX730X
1626	help
1627	  GPIO driver for Maxim MAX7301 SPI-based GPIO expander.
1628
 
 
 
 
 
 
 
 
1629config GPIO_MC33880
1630	tristate "Freescale MC33880 high-side/low-side switch"
 
1631	help
1632	  SPI driver for Freescale MC33880 high-side/low-side switch.
1633	  This provides GPIO interface supporting inputs and outputs.
1634
1635config GPIO_PISOSR
1636	tristate "Generic parallel-in/serial-out shift register"
1637	help
1638	  GPIO driver for SPI compatible parallel-in/serial-out shift
1639	  registers. These are input only devices.
1640
1641config GPIO_XRA1403
1642	tristate "EXAR XRA1403 16-bit GPIO expander"
1643	select REGMAP_SPI
1644	help
1645	  GPIO driver for EXAR XRA1403 16-bit SPI-based GPIO expander.
1646
1647config GPIO_MOXTET
1648	tristate "Turris Mox Moxtet bus GPIO expander"
1649	depends on MOXTET
1650	help
1651	  Say yes here if you are building for the Turris Mox router.
1652	  This is the driver needed for configuring the GPIOs via the Moxtet
1653	  bus. For example the Mox module with SFP cage needs this driver
1654	  so that phylink can use corresponding GPIOs.
1655
1656endmenu
1657
1658menu "USB GPIO expanders"
1659	depends on USB
1660
1661config GPIO_VIPERBOARD
1662	tristate "Viperboard GPIO a & b support"
1663	depends on MFD_VIPERBOARD
1664	help
1665	  Say yes here to access the GPIO signals of Nano River
1666	  Technologies Viperboard. There are two GPIO chips on the
1667	  board: gpioa and gpiob.
1668	  See viperboard API specification and Nano
1669	  River Tech's viperboard.h for detailed meaning
1670	  of the module parameters.
1671
1672endmenu
1673
1674menu "Virtual GPIO drivers"
1675
1676config GPIO_AGGREGATOR
1677	tristate "GPIO Aggregator"
1678	help
1679	  Say yes here to enable the GPIO Aggregator, which provides a way to
1680	  aggregate existing GPIO lines into a new virtual GPIO chip.
1681	  This can serve the following purposes:
1682	    - Assign permissions for a collection of GPIO lines to a user,
1683	    - Export a collection of GPIO lines to a virtual machine,
1684	    - Provide a generic driver for a GPIO-operated device in an
1685	      industrial control context, to be operated from userspace using
1686	      the GPIO chardev interface.
1687
1688config GPIO_LATCH
1689	tristate "GPIO latch driver"
1690	help
1691	  Say yes here to enable a driver for GPIO multiplexers based on latches
1692	  connected to other GPIOs.
1693
1694config GPIO_MOCKUP
1695	tristate "GPIO Testing Driver"
1696	select IRQ_SIM
1697	help
1698	  This enables GPIO Testing driver, which provides a way to test GPIO
1699	  subsystem through sysfs (or char device) and debugfs.
1700	  User could use it through the script in
1701	  tools/testing/selftests/gpio/gpio-mockup.sh. Reference the usage in
1702	  it.
1703
1704config GPIO_VIRTIO
1705	tristate "VirtIO GPIO support"
1706	depends on VIRTIO
1707	select GPIOLIB_IRQCHIP
1708	help
1709	  Say Y here to enable guest support for virtio-based GPIO controllers.
1710
1711	  These virtual GPIOs can be routed to real GPIOs or attached to
1712	  simulators on the host (like QEMU).
1713
1714config GPIO_SIM
1715	tristate "GPIO Simulator Module"
1716	select IRQ_SIM
1717	select CONFIGFS_FS
1718	help
1719	  This enables the GPIO simulator - a configfs-based GPIO testing
1720	  driver.
1721
1722endmenu
1723
1724endif