Kconfig

   1# SPDX-License-Identifier: GPL-2.0-only
   2#
   3# GPIO infrastructure and drivers
   4#
   5
   6config GPIOLIB_LEGACY
   7	def_bool y
   8
   9config HAVE_SHARED_GPIOS
  10	bool
  11
  12menuconfig GPIOLIB
  13	bool "GPIO Support"
  14	help
  15	  This enables GPIO support through the generic GPIO library.
  16	  You only need to enable this if you also want to enable
  17	  one or more of the GPIO drivers below.
  18
  19	  If unsure, say N.
  20
  21if GPIOLIB
  22
  23config GPIOLIB_FASTPATH_LIMIT
  24	int "Maximum number of GPIOs for fast path"
  25	range 32 512
  26	default 512
  27	help
  28	  This adjusts the point at which certain APIs will switch from
  29	  using a stack allocated buffer to a dynamically allocated buffer.
  30
  31	  You shouldn't need to change this unless you really need to
  32	  optimize either stack space or performance. Change this carefully
  33	  since setting an incorrect value could cause stack corruption.
  34
  35config OF_GPIO
  36	def_bool y
  37	depends on OF
  38	depends on HAS_IOMEM
  39
  40config GPIO_ACPI
  41	def_bool y
  42	depends on ACPI
  43
  44config GPIOLIB_IRQCHIP
  45	select IRQ_DOMAIN
  46	bool
  47
  48config GPIO_SHARED
  49	def_bool y
  50	depends on HAVE_SHARED_GPIOS || COMPILE_TEST
  51	select AUXILIARY_BUS
  52
  53config DEBUG_GPIO
  54	bool "Debug GPIO calls"
  55	depends on DEBUG_KERNEL
  56	help
  57	  Say Y here to add some extra checks and diagnostics to GPIO calls.
  58	  These checks help ensure that GPIOs have been properly initialized
  59	  before they are used, and that sleeping calls are not made from
  60	  non-sleeping contexts.  They can make bitbanged serial protocols
  61	  slower.  The diagnostics help catch the type of setup errors
  62	  that are most common when setting up new platforms or boards.
  63
  64config GPIO_SYSFS
  65	bool "/sys/class/gpio/... (sysfs interface)" if EXPERT
  66	depends on SYSFS
  67	select GPIO_CDEV # We need to encourage the new ABI
  68	help
  69	  Say Y here to add the legacy sysfs interface for GPIOs.
  70
  71	  This ABI is deprecated. If you want to use GPIO from userspace,
  72	  use the character device /dev/gpiochipN with the appropriate
  73	  ioctl() operations instead.
  74
  75config GPIO_SYSFS_LEGACY
  76	bool "Enable legacy functionalities of the sysfs interface"
  77	depends on GPIO_SYSFS
  78	default y if GPIO_SYSFS
  79	help
  80	  Say Y here if you want to enable the legacy, global GPIO
  81	  numberspace-based functionalities of the sysfs interface.
  82
  83config GPIO_CDEV
  84	bool "Character device (/dev/gpiochipN) support" if EXPERT
  85	default y
  86	help
  87	  Say Y here to add the character device /dev/gpiochipN interface
  88	  for GPIOs. The character device allows userspace to control GPIOs
  89	  using ioctl() operations.
  90
  91	  Only say N if you are sure that the GPIO character device is not
  92	  required.
  93
  94	  If unsure, say Y.
  95
  96config GPIO_CDEV_V1
  97	bool "Support GPIO ABI Version 1"
  98	default y
  99	depends on GPIO_CDEV
 100	help
 101	  Say Y here to support version 1 of the GPIO CDEV ABI.
 102
 103	  This ABI version is deprecated.
 104	  Please use the latest ABI for new developments.
 105
 106	  If unsure, say Y.
 107
 108config GPIO_GENERIC
 109	depends on HAS_IOMEM # Only for IOMEM drivers
 110	tristate
 111
 112config GPIO_REGMAP
 113	select REGMAP
 114	tristate
 115
 116config GPIO_SWNODE_UNDEFINED
 117	bool
 118	help
 119	  This adds a special place holder for software nodes to contain an
 120	  undefined GPIO reference, this is primarily used by SPI to allow a
 121	  list of GPIO chip selects to mark a certain chip select as being
 122	  controlled the SPI device's internal chip select mechanism and not
 123	  a GPIO.
 124
 125# put drivers in the right section, in alphabetical order
 126
 127# This symbol is selected by both I2C and SPI expanders
 128config GPIO_MAX730X
 129	tristate
 130
 131config GPIO_IDIO_16
 132	tristate
 133	select REGMAP_IRQ
 134	select GPIOLIB_IRQCHIP
 135	select GPIO_REGMAP
 136	help
 137	  Enables support for the idio-16 library functions. The idio-16 library
 138	  provides functions to facilitate communication with devices within the
 139	  ACCES IDIO-16 family such as the 104-IDIO-16 and the PCI-IDIO-16.
 140
 141	  If built as a module its name will be gpio-idio-16.
 142
 143menu "Memory mapped GPIO drivers"
 144	depends on HAS_IOMEM
 145
 146config GPIO_74XX_MMIO
 147	tristate "GPIO driver for 74xx-ICs with MMIO access"
 148	depends on OF_GPIO
 149	select GPIO_GENERIC
 150	help
 151	  Say yes here to support GPIO functionality for 74xx-compatible ICs
 152	  with MMIO access. Compatible models include:
 153	    1 bit:	741G125 (Input), 741G74 (Output)
 154	    2 bits:	742G125 (Input), 7474 (Output)
 155	    4 bits:	74125 (Input), 74175 (Output)
 156	    6 bits:	74365 (Input), 74174 (Output)
 157	    8 bits:	74244 (Input), 74273 (Output)
 158	    16 bits:	741624 (Input), 7416374 (Output)
 159
 160config GPIO_ALTERA
 161	tristate "Altera GPIO"
 162	select GPIOLIB_IRQCHIP
 163	help
 164	  Say Y or M here to build support for the Altera PIO device.
 165
 166	  If driver is built as a module it will be called gpio-altera.
 167
 168config GPIO_AMDPT
 169	tristate "AMD Promontory GPIO support"
 170	depends on ACPI
 171	select GPIO_GENERIC
 172	help
 173	  Driver for GPIO functionality on Promontory IOHub.
 174	  Requires ACPI ASL code to enumerate as a platform device.
 175
 176config GPIO_ASPEED
 177	tristate "Aspeed GPIO support"
 178	depends on (ARCH_ASPEED || COMPILE_TEST) && OF_GPIO
 179	select GPIOLIB_IRQCHIP
 180	help
 181	  Say Y here to support Aspeed AST2400 and AST2500 GPIO controllers.
 182
 183config GPIO_ASPEED_SGPIO
 184	bool "Aspeed SGPIO support"
 185	depends on (ARCH_ASPEED || COMPILE_TEST) && OF_GPIO
 186	select GPIO_GENERIC
 187	select GPIOLIB_IRQCHIP
 188	help
 189	  Say Y here to support Aspeed AST2500 SGPIO functionality.
 190
 191config GPIO_ATH79
 192	tristate "Atheros AR71XX/AR724X/AR913X GPIO support"
 193	default y if ATH79
 194	depends on ATH79 || COMPILE_TEST
 195	select GPIO_GENERIC
 196	select GPIOLIB_IRQCHIP
 197	help
 198	  Select this option to enable GPIO driver for
 199	  Atheros AR71XX/AR724X/AR913X SoC devices.
 200
 201config GPIO_RASPBERRYPI_EXP
 202	tristate "Raspberry Pi 3 GPIO Expander"
 203	default RASPBERRYPI_FIRMWARE
 204	depends on OF_GPIO
 205	# Make sure not 'y' when RASPBERRYPI_FIRMWARE is 'm'. This can only
 206	# happen when COMPILE_TEST=y, hence the added !RASPBERRYPI_FIRMWARE.
 207	depends on (ARCH_BCM2835 && RASPBERRYPI_FIRMWARE) || (COMPILE_TEST && !RASPBERRYPI_FIRMWARE)
 208	help
 209	  Turn on GPIO support for the expander on Raspberry Pi 3 boards, using
 210	  the firmware mailbox to communicate with VideoCore on BCM283x chips.
 211
 212config GPIO_BCM_KONA
 213	bool "Broadcom Kona GPIO"
 214	depends on ARCH_BCM_MOBILE || COMPILE_TEST
 215	select GPIOLIB_IRQCHIP
 216	help
 217	  Turn on GPIO support for Broadcom "Kona" chips.
 218
 219config GPIO_BCM_XGS_IPROC
 220	tristate "BRCM XGS iProc GPIO support"
 221	depends on OF_GPIO && (ARCH_BCM_IPROC || COMPILE_TEST)
 222	select GPIO_GENERIC
 223	select GPIOLIB_IRQCHIP
 224	default ARCH_BCM_IPROC
 225	help
 226	  Say yes here to enable GPIO support for Broadcom XGS iProc SoCs.
 227
 228config GPIO_BLZP1600
 229	tristate "Blaize BLZP1600 GPIO support"
 230	default y if ARCH_BLAIZE
 231	depends on ARCH_BLAIZE || COMPILE_TEST
 232	depends on OF_GPIO
 233	select GPIO_GENERIC
 234	select GPIOLIB_IRQCHIP
 235	help
 236	  Say Y or M here to add support for the Blaize BLZP1600 GPIO device.
 237	  The controller is based on the Verisilicon Microelectronics GPIO APB v0.2
 238	  IP block.
 239
 240config GPIO_BRCMSTB
 241	tristate "BRCMSTB GPIO support"
 242	default y if (ARCH_BRCMSTB || BMIPS_GENERIC)
 243	depends on OF_GPIO && (ARCH_BRCMSTB || ARCH_BCM2835 || BMIPS_GENERIC || COMPILE_TEST)
 244	select GPIO_GENERIC
 245	select IRQ_DOMAIN
 246	help
 247	  Say yes here to enable GPIO support for Broadcom STB (BCM7XXX) SoCs.
 248
 249config GPIO_CADENCE
 250	tristate "Cadence GPIO support"
 251	depends on OF_GPIO
 252	select GPIO_GENERIC
 253	select GPIOLIB_IRQCHIP
 254	help
 255	  Say yes here to enable support for Cadence GPIO controller.
 256
 257config GPIO_CLPS711X
 258	tristate "CLPS711X GPIO support"
 259	depends on ARCH_CLPS711X || COMPILE_TEST
 260	select GPIO_GENERIC
 261	help
 262	  Say yes here to support GPIO on CLPS711X SoCs.
 263
 264config GPIO_DAVINCI
 265	tristate "TI Davinci/Keystone GPIO support"
 266	default y if ARCH_DAVINCI
 267	depends on ((ARM || ARM64) && (ARCH_DAVINCI || ARCH_KEYSTONE || ARCH_K3)) || COMPILE_TEST
 268	select GPIOLIB_IRQCHIP
 269	help
 270	  Say yes here to enable GPIO support for TI Davinci/Keystone SoCs.
 271
 272config GPIO_DWAPB
 273	tristate "Synopsys DesignWare APB GPIO driver"
 274	select GPIO_GENERIC
 275	select GPIOLIB_IRQCHIP
 276	help
 277	  Say Y or M here to build support for the Synopsys DesignWare APB
 278	  GPIO block.
 279
 280config GPIO_EIC_SPRD
 281	tristate "Spreadtrum EIC support"
 282	depends on ARCH_SPRD || COMPILE_TEST
 283	depends on OF_GPIO
 284	select GPIOLIB_IRQCHIP
 285	help
 286	  Say yes here to support Spreadtrum EIC device.
 287
 288config GPIO_EM
 289	tristate "Emma Mobile GPIO"
 290	depends on (ARCH_EMEV2 || COMPILE_TEST) && OF_GPIO
 291	help
 292	  Say yes here to support GPIO on Renesas Emma Mobile SoCs.
 293
 294config GPIO_EN7523
 295	tristate "Airoha GPIO support"
 296	depends on ARCH_AIROHA
 297	default ARCH_AIROHA
 298	select GPIO_GENERIC
 299	select GPIOLIB_IRQCHIP
 300	help
 301	  Say Y or M here to support the GPIO controller block on the
 302	  Airoha EN7523 SoC. It supports two banks of 32 GPIOs.
 303
 304config GPIO_EP93XX
 305	def_bool y
 306	depends on ARCH_EP93XX || COMPILE_TEST
 307	select GPIO_GENERIC
 308	select GPIOLIB_IRQCHIP
 309
 310config GPIO_EXAR
 311	tristate "Support for GPIO pins on XR17V352/354/358"
 312	depends on SERIAL_8250_EXAR
 313	select REGMAP_MMIO
 314	help
 315	  Selecting this option will enable handling of GPIO pins present
 316	  on Exar XR17V352/354/358 chips.
 317
 318config GPIO_GE_FPGA
 319	bool "GE FPGA based GPIO"
 320	depends on GE_FPGA || COMPILE_TEST
 321	select GPIO_GENERIC
 322	help
 323	  Support for common GPIO functionality provided on some GE Single Board
 324	  Computers.
 325
 326	  This driver provides basic support (configure as input or output, read
 327	  and write pin state) for GPIO implemented in a number of GE single
 328	  board computers.
 329
 330config GPIO_FTGPIO010
 331	bool "Faraday FTGPIO010 GPIO"
 332	depends on OF_GPIO
 333	select GPIO_GENERIC
 334	select GPIOLIB_IRQCHIP
 335	default (ARCH_GEMINI || ARCH_MOXART)
 336	help
 337	  Support for common GPIOs from the Faraday FTGPIO010 IP core, found in
 338	  Cortina systems Gemini platforms, Moxa ART and others.
 339
 340config GPIO_GENERIC_PLATFORM
 341	tristate "Generic memory-mapped GPIO controller support (MMIO platform device)"
 342	select GPIO_GENERIC
 343	help
 344	  Say yes here to support basic platform_device memory-mapped GPIO controllers.
 345
 346config GPIO_GRANITERAPIDS
 347	tristate "Intel Granite Rapids-D vGPIO support"
 348	depends on X86 || COMPILE_TEST
 349	select GPIOLIB_IRQCHIP
 350	help
 351	  Select this to enable virtual GPIO support on platforms with the
 352	  following SoCs:
 353
 354	  - Intel Granite Rapids-D
 355
 356	  The driver enables basic GPIO functionality and implements interrupt
 357	  support. The virtual GPIO driver controls GPIO lines via a firmware
 358	  interface. The physical GPIO pins reside on device that is external
 359	  from the main SoC package, such as a BMC or a CPLD.
 360
 361	  To compile this driver as a module, choose M here: the module will
 362	  be called gpio-graniterapids.
 363
 364config GPIO_GRGPIO
 365	tristate "Aeroflex Gaisler GRGPIO support"
 366	depends on OF || COMPILE_TEST
 367	select GPIO_GENERIC
 368	select GPIOLIB_IRQCHIP
 369	help
 370	  Select this to support Aeroflex Gaisler GRGPIO cores from the GRLIB
 371	  VHDL IP core library.
 372
 373config GPIO_HISI
 374	tristate "HiSilicon GPIO controller driver"
 375	depends on ARM64 || COMPILE_TEST
 376	select GPIO_GENERIC
 377	select GPIOLIB_IRQCHIP
 378	help
 379	  Say Y or M here to build support for the HiSilicon GPIO controller
 380	  driver GPIO block.
 381	  This GPIO controller supports double-edge interrupt and multi-core
 382	  concurrent access.
 383
 384config GPIO_HLWD
 385	tristate "Nintendo Wii (Hollywood) GPIO"
 386	depends on OF_GPIO
 387	select GPIO_GENERIC
 388	select GPIOLIB_IRQCHIP
 389	help
 390	  Select this to support the GPIO controller of the Nintendo Wii.
 391
 392	  If unsure, say N.
 393
 394config GPIO_ICH
 395	tristate "Intel ICH GPIO"
 396	depends on (X86 && LPC_ICH) || (COMPILE_TEST && HAS_IOPORT)
 397	help
 398	  Say yes here to support the GPIO functionality of a number of Intel
 399	  ICH-based chipsets.  Currently supported devices: ICH6, ICH7, ICH8
 400	  ICH9, ICH10, Series 5/3400 (e.g. Ibex Peak), Series 6/C200 (e.g.
 401	  Cougar Point), NM10 (Tiger Point), and 3100 (Whitmore Lake).
 402
 403	  If unsure, say N.
 404
 405config GPIO_IMX_SCU
 406       def_bool y
 407       depends on IMX_SCU
 408
 409config GPIO_IXP4XX
 410	bool "Intel IXP4xx GPIO"
 411	depends on (ARCH_IXP4XX && OF) || COMPILE_TEST
 412	select GPIO_GENERIC
 413	select GPIOLIB_IRQCHIP
 414	select IRQ_DOMAIN_HIERARCHY
 415	help
 416	  Say yes here to support the GPIO functionality of a number of Intel
 417	  IXP4xx series of chips.
 418
 419	  If unsure, say N.
 420
 421config GPIO_LOGICVC
 422	tristate "Xylon LogiCVC GPIO support"
 423	depends on MFD_SYSCON && OF
 424	help
 425	  Say yes here to support GPIO functionality of the Xylon LogiCVC
 426	  programmable logic block.
 427
 428config GPIO_LOONGSON
 429	bool "Loongson-2/3 GPIO support"
 430	depends on CPU_LOONGSON2EF || CPU_LOONGSON64
 431	help
 432	  Driver for GPIO functionality on Loongson-2F/3A/3B processors.
 433
 434config GPIO_LOONGSON_64BIT
 435	tristate "Loongson 64 bit GPIO support"
 436	depends on LOONGARCH || COMPILE_TEST
 437	depends on OF_GPIO
 438	select GPIO_GENERIC
 439	select GPIOLIB_IRQCHIP
 440	help
 441	  Say yes here to support the GPIO functionality of a number of
 442	  Loongson series of chips. The Loongson GPIO controller supports
 443	  up to 60 GPIOS in total, 4 of which are dedicated GPIO pins, and
 444	  the remaining 56 are reused with other functions, with edge or
 445	  level triggered interrupts.
 446
 447config GPIO_LPC18XX
 448	tristate "NXP LPC18XX/43XX GPIO support"
 449	default y if ARCH_LPC18XX
 450	depends on OF_GPIO && (ARCH_LPC18XX || COMPILE_TEST)
 451	select IRQ_DOMAIN_HIERARCHY
 452	select GPIOLIB_IRQCHIP
 453	help
 454	  Select this option to enable GPIO driver for
 455	  NXP LPC18XX/43XX devices.
 456
 457config GPIO_LPC32XX
 458	tristate "NXP LPC32XX GPIO support"
 459	depends on OF_GPIO && (ARCH_LPC32XX || COMPILE_TEST)
 460	help
 461	  Select this option to enable GPIO driver for
 462	  NXP LPC32XX devices.
 463
 464config GPIO_MB86S7X
 465	tristate "GPIO support for Fujitsu MB86S7x Platforms"
 466	help
 467	  Say yes here to support the GPIO controller in Fujitsu MB86S70 SoCs.
 468
 469config GPIO_MENZ127
 470	tristate "MEN 16Z127 GPIO support"
 471	depends on MCB
 472	select GPIO_GENERIC
 473	help
 474	  Say yes here to support the MEN 16Z127 GPIO Controller.
 475
 476config GPIO_MM_LANTIQ
 477	bool "Lantiq Memory mapped GPIOs"
 478	depends on LANTIQ && SOC_XWAY
 479	help
 480	  This enables support for memory mapped GPIOs on the External Bus Unit
 481	  (EBU) found on Lantiq SoCs. The GPIOs are output only as they are
 482	  created by attaching a 16-bit latch to the bus.
 483
 484config GPIO_MPC5200
 485	def_bool y
 486	depends on PPC_MPC52xx
 487
 488config GPIO_MPC8XXX
 489	bool "MPC512x/MPC8xxx/QorIQ GPIO support"
 490	depends on PPC_MPC512x || PPC_MPC831x || PPC_MPC834x || PPC_MPC837x || \
 491		   FSL_SOC_BOOKE || PPC_86xx || ARCH_LAYERSCAPE || ARM || \
 492		   COMPILE_TEST
 493	select GPIO_GENERIC
 494	select GPIOLIB_IRQCHIP
 495	help
 496	  Say Y here if you're going to use hardware that connects to the
 497	  MPC512x/831x/834x/837x/8572/8610/QorIQ GPIOs.
 498
 499config GPIO_MT7621
 500	bool "Mediatek MT7621 GPIO Support"
 501	depends on SOC_MT7620 || SOC_MT7621 || COMPILE_TEST
 502	depends on OF_GPIO
 503	select GPIO_GENERIC
 504	select GPIOLIB_IRQCHIP
 505	help
 506	  Say yes here to support the Mediatek MT7621 SoC GPIO device.
 507
 508config GPIO_MVEBU
 509	bool "Marvell Orion and EBU GPIO support" if COMPILE_TEST
 510	depends on PLAT_ORION || ARCH_MVEBU || COMPILE_TEST
 511	default PLAT_ORION || ARCH_MVEBU
 512	select GENERIC_IRQ_CHIP
 513	select REGMAP_MMIO
 514
 515config GPIO_MXC
 516	tristate "i.MX GPIO support"
 517	depends on ARCH_MXC || COMPILE_TEST
 518	select GPIO_GENERIC
 519	select GENERIC_IRQ_CHIP
 520
 521config GPIO_MXS
 522	bool "Freescale MXS GPIO support" if COMPILE_TEST
 523	depends on ARCH_MXS || COMPILE_TEST
 524	default y if ARCH_MXS
 525	select GPIO_GENERIC
 526	select GENERIC_IRQ_CHIP
 527
 528config GPIO_NOMADIK
 529	bool "Nomadik GPIO driver"
 530	depends on ARCH_U8500 || ARCH_NOMADIK || MACH_EYEQ5 || COMPILE_TEST
 531	select GPIOLIB_IRQCHIP
 532	help
 533	  Say yes here to support the Nomadik SoC GPIO block. This block is also
 534	  used by the Mobileye EyeQ5 SoC.
 535
 536	  It handles up to 32 GPIOs per bank, that can all be interrupt sources.
 537	  It is deeply interconnected with the associated pinctrl driver as GPIO
 538	  registers handle muxing ("alternate functions") as well.
 539
 540config GPIO_NPCM_SGPIO
 541	bool "Nuvoton SGPIO support"
 542	depends on ARCH_NPCM || COMPILE_TEST
 543	select GPIOLIB_IRQCHIP
 544	help
 545	  Say Y here to support Nuvoton NPCM7XX/NPCM8XX SGPIO functionality.
 546
 547config GPIO_OCTEON
 548	tristate "Cavium OCTEON GPIO"
 549	depends on CAVIUM_OCTEON_SOC
 550	default y
 551	help
 552	  Say yes here to support the on-chip GPIO lines on the OCTEON
 553	  family of SOCs.
 554
 555config GPIO_OMAP
 556	tristate "TI OMAP GPIO support"
 557	depends on ARCH_OMAP || COMPILE_TEST
 558	default y if ARCH_OMAP
 559	select GENERIC_IRQ_CHIP
 560	select GPIOLIB_IRQCHIP
 561	help
 562	  Say yes here to enable GPIO support for TI OMAP SoCs.
 563
 564config GPIO_PL061
 565	tristate "PrimeCell PL061 GPIO support"
 566	depends on ARM_AMBA || COMPILE_TEST
 567	select IRQ_DOMAIN
 568	select GPIOLIB_IRQCHIP
 569	help
 570	  Say yes here to support the PrimeCell PL061 GPIO device.
 571
 572config GPIO_POLARFIRE_SOC
 573	bool "Microchip FPGA GPIO support"
 574	select REGMAP_MMIO
 575	help
 576	  Say yes here to support the GPIO controllers on Microchip FPGAs.
 577
 578config GPIO_PXA
 579	bool "PXA GPIO support"
 580	depends on ARCH_PXA || ARCH_MMP || COMPILE_TEST
 581	select GPIOLIB_IRQCHIP
 582	help
 583	  Say yes here to support the PXA GPIO device.
 584
 585config GPIO_RCAR
 586	tristate "Renesas R-Car and RZ/G GPIO support"
 587	depends on ARCH_RENESAS || COMPILE_TEST
 588	select GPIOLIB_IRQCHIP
 589	help
 590	  Say yes here to support GPIO on Renesas R-Car or RZ/G SoCs.
 591
 592config GPIO_RDA
 593	bool "RDA Micro GPIO controller support"
 594	depends on ARCH_RDA || COMPILE_TEST
 595	depends on OF_GPIO
 596	select GPIO_GENERIC
 597	select GPIOLIB_IRQCHIP
 598	help
 599	  Say Y here to support RDA Micro GPIO controller.
 600
 601config GPIO_REALTEK_OTTO
 602	tristate "Realtek Otto GPIO support"
 603	depends on MACH_REALTEK_RTL
 604	default MACH_REALTEK_RTL
 605	select GPIO_GENERIC
 606	select GPIOLIB_IRQCHIP
 607	help
 608	  The GPIO controller on the Otto MIPS platform supports up to two
 609	  banks of 32 GPIOs, with edge triggered interrupts. The 32 GPIOs
 610	  are grouped in four 8-bit wide ports.
 611
 612	  When built as a module, the module will be called realtek_otto_gpio.
 613
 614config GPIO_REG
 615	bool
 616	help
 617	  A 32-bit single register GPIO fixed in/out implementation.  This
 618	  can be used to represent any register as a set of GPIO signals.
 619
 620config GPIO_ROCKCHIP
 621	tristate "Rockchip GPIO support"
 622	depends on ARCH_ROCKCHIP || COMPILE_TEST
 623	select GENERIC_IRQ_CHIP
 624	select GPIOLIB_IRQCHIP
 625	default ARCH_ROCKCHIP
 626	help
 627	  Say yes here to support GPIO on Rockchip SoCs.
 628
 629config GPIO_RTD
 630	tristate "Realtek DHC GPIO support"
 631	depends on ARCH_REALTEK || COMPILE_TEST
 632	default y
 633	select GPIOLIB_IRQCHIP
 634	help
 635	  This option enables support for GPIOs found on Realtek DHC(Digital
 636	  Home Center) SoCs family, including RTD1295, RTD1315E, RTD1319,
 637	  RTD1319D, RTD1395, RTD1619 and RTD1619B.
 638
 639	  Say yes here to support GPIO functionality and GPIO interrupt on
 640	  Realtek DHC SoCs.
 641
 642config GPIO_SAMA5D2_PIOBU
 643	tristate "SAMA5D2 PIOBU GPIO support"
 644	depends on MFD_SYSCON
 645	depends on OF_GPIO
 646	depends on ARCH_AT91 || COMPILE_TEST
 647	select GPIO_SYSCON
 648	help
 649	  Say yes here to use the PIOBU pins as GPIOs.
 650
 651	  PIOBU pins on the SAMA5D2 can be used as GPIOs.
 652	  The difference from regular GPIOs is that they
 653	  maintain their value during backup/self-refresh.
 654
 655config GPIO_SIFIVE
 656	tristate "SiFive GPIO support"
 657	depends on OF_GPIO
 658	select IRQ_DOMAIN_HIERARCHY
 659	select GPIO_GENERIC
 660	select GPIOLIB_IRQCHIP
 661	select REGMAP_MMIO
 662	help
 663	  Say yes here to support the GPIO device on SiFive SoCs.
 664
 665config GPIO_SIOX
 666	tristate "SIOX GPIO support"
 667	depends on SIOX
 668	select GPIOLIB_IRQCHIP
 669	help
 670	  Say yes here to support SIOX I/O devices. These are units connected
 671	  via a SIOX bus and have a number of fixed-direction I/O lines.
 672
 673config GPIO_SNPS_CREG
 674	bool "Synopsys GPIO via CREG (Control REGisters) driver"
 675	depends on ARC || COMPILE_TEST
 676	depends on OF_GPIO
 677	help
 678	  This driver supports GPIOs via CREG on various Synopsys SoCs.
 679	  This is a single-register MMIO GPIO driver for complex cases
 680	  where only several fields in register belong to GPIO lines and
 681	  each GPIO line owns a field with different length and on/off value.
 682
 683config GPIO_SPACEMIT_K1
 684	tristate "SPACEMIT K1 GPIO support"
 685	depends on ARCH_SPACEMIT || COMPILE_TEST
 686	depends on OF_GPIO
 687	select GPIO_GENERIC
 688	select GPIOLIB_IRQCHIP
 689	help
 690	  Say yes here to support the SpacemiT's K1 GPIO device.
 691
 692config GPIO_SPEAR_SPICS
 693	bool "ST SPEAr13xx SPI Chip Select as GPIO support"
 694	depends on PLAT_SPEAR
 695	select GENERIC_IRQ_CHIP
 696	help
 697	  Say yes here to support ST SPEAr SPI Chip Select as GPIO device.
 698
 699config GPIO_SPRD
 700	tristate "Spreadtrum GPIO support"
 701	depends on ARCH_SPRD || COMPILE_TEST
 702	depends on OF_GPIO
 703	select GPIOLIB_IRQCHIP
 704	help
 705	  Say yes here to support Spreadtrum GPIO device.
 706
 707config GPIO_STP_XWAY
 708	bool "XWAY STP GPIOs"
 709	depends on SOC_XWAY || COMPILE_TEST
 710	depends on OF_GPIO
 711	help
 712	  This enables support for the Serial To Parallel (STP) unit found on
 713	  XWAY SoC. The STP allows the SoC to drive a shift registers cascade,
 714	  that can be up to 24 bits. This peripheral is aimed at driving LEDs.
 715	  Some of the GPIOs/LEDs can be auto updated by the SoC with DSL and
 716	  phy status.
 717
 718config GPIO_SYSCON
 719	tristate "GPIO based on SYSCON"
 720	depends on MFD_SYSCON && OF
 721	help
 722	  Say yes here to support GPIO functionality though SYSCON driver.
 723
 724config GPIO_TANGIER
 725	tristate
 726	select GPIOLIB_IRQCHIP
 727	help
 728	  GPIO support for Intel Tangier and compatible platforms.
 729	  Currently supported:
 730	   - Elkhart Lake
 731	   - Merrifield
 732
 733	  If built as a module its name will be gpio-tangier.
 734
 735config GPIO_TB10X
 736	bool "Abilis Systems TB10x GPIO controller"
 737	depends on ARC_PLAT_TB10X || COMPILE_TEST
 738	select GPIO_GENERIC
 739	select GENERIC_IRQ_CHIP
 740
 741config GPIO_TEGRA
 742	tristate "NVIDIA Tegra GPIO support"
 743	default ARCH_TEGRA
 744	depends on ARCH_TEGRA || COMPILE_TEST
 745	depends on OF_GPIO
 746	select GPIOLIB_IRQCHIP
 747	select IRQ_DOMAIN_HIERARCHY
 748	help
 749	  Say yes here to support GPIO pins on NVIDIA Tegra SoCs.
 750
 751config GPIO_TEGRA186
 752	tristate "NVIDIA Tegra186 GPIO support"
 753	default ARCH_TEGRA_186_SOC || ARCH_TEGRA_194_SOC || ARCH_TEGRA_234_SOC
 754	depends on ARCH_TEGRA_186_SOC || ARCH_TEGRA_194_SOC || ARCH_TEGRA_234_SOC || COMPILE_TEST
 755	depends on OF_GPIO
 756	select GPIOLIB_IRQCHIP
 757	select IRQ_DOMAIN_HIERARCHY
 758	help
 759	  Say yes here to support GPIO pins on NVIDIA Tegra186, 194 and 234 SoCs.
 760
 761config GPIO_TS4800
 762	tristate "TS-4800 DIO blocks and compatibles"
 763	depends on OF_GPIO
 764	depends on SOC_IMX51 || COMPILE_TEST
 765	select GPIO_GENERIC
 766	help
 767	  This driver support TS-4800 FPGA GPIO controllers.
 768
 769config GPIO_THUNDERX
 770	tristate "Cavium ThunderX/OCTEON-TX GPIO"
 771	depends on ARCH_THUNDER || (64BIT && COMPILE_TEST)
 772	depends on PCI_MSI
 773	select GPIOLIB_IRQCHIP
 774	select IRQ_DOMAIN_HIERARCHY
 775	select IRQ_FASTEOI_HIERARCHY_HANDLERS
 776	help
 777	  Say yes here to support the on-chip GPIO lines on the ThunderX
 778	  and OCTEON-TX families of SoCs.
 779
 780config GPIO_UNIPHIER
 781	tristate "UniPhier GPIO support"
 782	depends on ARCH_UNIPHIER || COMPILE_TEST
 783	depends on OF_GPIO
 784	select IRQ_DOMAIN_HIERARCHY
 785	help
 786	  Say yes here to support UniPhier GPIOs.
 787
 788config GPIO_VF610
 789	tristate "VF610 GPIO support"
 790	default y if SOC_VF610
 791	depends on ARCH_MXC || COMPILE_TEST
 792	select GPIOLIB_IRQCHIP
 793	select GPIO_GENERIC
 794	help
 795	  Say yes here to support i.MX or Vybrid vf610 GPIOs.
 796
 797config GPIO_VISCONTI
 798	tristate "Toshiba Visconti GPIO support"
 799	depends on ARCH_VISCONTI || COMPILE_TEST
 800	depends on OF_GPIO
 801	select GPIOLIB_IRQCHIP
 802	select GPIO_GENERIC
 803	select IRQ_DOMAIN_HIERARCHY
 804	help
 805	  Say yes here to support GPIO on Tohisba Visconti.
 806
 807config GPIO_WCD934X
 808	tristate "Qualcomm Technologies Inc WCD9340/WCD9341 GPIO controller driver"
 809	depends on MFD_WCD934X && OF_GPIO
 810	help
 811         This driver is to support GPIO block found on the Qualcomm Technologies
 812	 Inc WCD9340/WCD9341 Audio Codec.
 813
 814config GPIO_XGENE
 815	bool "APM X-Gene GPIO controller support"
 816	depends on ARM64 && OF_GPIO
 817	help
 818	  This driver is to support the GPIO block within the APM X-Gene SoC
 819	  platform's generic flash controller. The GPIO pins are muxed with
 820	  the generic flash controller's address and data pins. Say yes
 821	  here to enable the GFC GPIO functionality.
 822
 823config GPIO_XGENE_SB
 824	tristate "APM X-Gene GPIO standby controller support"
 825	depends on (ARCH_XGENE || COMPILE_TEST)
 826	select GPIO_GENERIC
 827	select GPIOLIB_IRQCHIP
 828	select IRQ_DOMAIN_HIERARCHY
 829	help
 830	  This driver supports the GPIO block within the APM X-Gene
 831	  Standby Domain. Say yes here to enable the GPIO functionality.
 832
 833config GPIO_XILINX
 834	tristate "Xilinx GPIO support"
 835	select GPIOLIB_IRQCHIP
 836	help
 837	  Say yes here to support the Xilinx FPGA GPIO device.
 838
 839config GPIO_XLP
 840	tristate "Cavium ThunderX2 GPIO support"
 841	depends on ARCH_THUNDER2 || COMPILE_TEST
 842	select GPIOLIB_IRQCHIP
 843	help
 844	  This driver provides support for GPIO interface on Cavium's ThunderX2
 845	  CN99XX SoCs (Originally from Netlogic XLP).
 846
 847	  If unsure, say N.
 848
 849config GPIO_XTENSA
 850	bool "Xtensa GPIO32 support"
 851	depends on XTENSA
 852	depends on HAVE_XTENSA_GPIO32
 853	depends on !SMP
 854	help
 855	  Say yes here to support the Xtensa internal GPIO32 IMPWIRE (input)
 856	  and EXPSTATE (output) ports.
 857
 858config GPIO_ZEVIO
 859	bool "LSI ZEVIO SoC memory mapped GPIOs"
 860	depends on ARM
 861	help
 862	  Say yes here to support the GPIO controller in LSI ZEVIO SoCs.
 863
 864config GPIO_ZYNQ
 865	tristate "Xilinx Zynq GPIO support"
 866	depends on ARCH_ZYNQ || ARCH_ZYNQMP || COMPILE_TEST
 867	select GPIOLIB_IRQCHIP
 868	help
 869	  Say yes here to support Xilinx Zynq GPIO controller.
 870
 871config GPIO_ZYNQMP_MODEPIN
 872	tristate "ZynqMP ps-mode pin GPIO configuration driver"
 873	depends on ZYNQMP_FIRMWARE || COMPILE_TEST
 874	default ZYNQMP_FIRMWARE
 875	help
 876	  Say yes here to support the ZynqMP ps-mode pin GPIO configuration
 877	  driver.
 878
 879	  This ps-mode pin GPIO driver is based on GPIO framework. PS_MODE
 880	  is 4-bits boot mode pins. It sets and gets the status of
 881	  the ps-mode pin. Every pin can be configured as input/output.
 882
 883config GPIO_LOONGSON1
 884	tristate "Loongson1 GPIO support"
 885	depends on MACH_LOONGSON32 || COMPILE_TEST
 886	select GPIO_GENERIC
 887	help
 888	  Say Y or M here to support GPIO on Loongson1 SoCs.
 889
 890config GPIO_AMD_FCH
 891	tristate "GPIO support for AMD Fusion Controller Hub (G-series SOCs)"
 892	help
 893	  This option enables driver for GPIO on AMD's Fusion Controller Hub,
 894	  as found on G-series SOCs (e.g. GX-412TC).
 895
 896	  Note: This driver doesn't register itself automatically, as it
 897	  needs to be provided with platform-specific configuration.
 898	  (See e.g. CONFIG_PCENGINES_APU2.)
 899
 900config GPIO_MSC313
 901	bool "MStar MSC313 GPIO support"
 902	depends on ARCH_MSTARV7 || COMPILE_TEST
 903	default ARCH_MSTARV7
 904	select GPIOLIB_IRQCHIP
 905	select IRQ_DOMAIN_HIERARCHY
 906	help
 907	  Say Y here to support the main GPIO block on MStar/SigmaStar
 908	  ARMv7-based SoCs.
 909
 910config GPIO_IDT3243X
 911	tristate "IDT 79RC3243X GPIO support"
 912	depends on MIKROTIK_RB532 || COMPILE_TEST
 913	select GPIO_GENERIC
 914	select GPIOLIB_IRQCHIP
 915	help
 916	  Select this option to enable GPIO driver for
 917	  IDT 79RC3243X-based devices like Mikrotik RB532.
 918
 919	  To compile this driver as a module, choose M here: the module will
 920	  be called gpio-idt3243x.
 921
 922endmenu
 923
 924menu "Port-mapped I/O GPIO drivers"
 925	depends on X86 && HAS_IOPORT # I/O space access
 926
 927config GPIO_VX855
 928	tristate "VIA VX855/VX875 GPIO"
 929	depends on PCI
 930	select MFD_CORE
 931	select MFD_VX855
 932	help
 933	  Support access to the VX855/VX875 GPIO lines through the GPIO library.
 934
 935	  This driver provides common support for accessing the device.
 936	  Additional drivers must be enabled in order to use the
 937	  functionality of the device.
 938
 939config GPIO_I8255
 940	tristate
 941	select GPIO_REGMAP
 942	help
 943	  Enables support for the i8255 interface library functions. The i8255
 944	  interface library provides functions to facilitate communication with
 945	  interfaces compatible with the venerable Intel 8255 Programmable
 946	  Peripheral Interface (PPI). The Intel 8255 PPI chip was first released
 947	  in the early 1970s but compatible interfaces are nowadays typically
 948	  found embedded in larger VLSI processing chips and FPGA components.
 949
 950	  If built as a module its name will be gpio-i8255.
 951
 952config GPIO_104_DIO_48E
 953	tristate "ACCES 104-DIO-48E GPIO support"
 954	depends on PC104
 955	select ISA_BUS_API
 956	select REGMAP_MMIO
 957	select REGMAP_IRQ
 958	select GPIOLIB_IRQCHIP
 959	select GPIO_I8255
 960	select I8254
 961	help
 962	  Enables GPIO support for the ACCES 104-DIO-48E series (104-DIO-48E,
 963	  104-DIO-24E). The base port addresses for the devices may be
 964	  configured via the base module parameter. The interrupt line numbers
 965	  for the devices may be configured via the irq module parameter.
 966
 967config GPIO_104_IDIO_16
 968	tristate "ACCES 104-IDIO-16 GPIO support"
 969	depends on PC104
 970	select ISA_BUS_API
 971	select REGMAP_MMIO
 972	select GPIO_IDIO_16
 973	help
 974	  Enables GPIO support for the ACCES 104-IDIO-16 family (104-IDIO-16,
 975	  104-IDIO-16E, 104-IDO-16, 104-IDIO-8, 104-IDIO-8E, 104-IDO-8). The
 976	  base port addresses for the devices may be configured via the base
 977	  module parameter. The interrupt line numbers for the devices may be
 978	  configured via the irq module parameter.
 979
 980config GPIO_104_IDI_48
 981	tristate "ACCES 104-IDI-48 GPIO support"
 982	depends on PC104
 983	select ISA_BUS_API
 984	select REGMAP_MMIO
 985	select REGMAP_IRQ
 986	select GPIOLIB_IRQCHIP
 987	select GPIO_REGMAP
 988	help
 989	  Enables GPIO support for the ACCES 104-IDI-48 family (104-IDI-48A,
 990	  104-IDI-48AC, 104-IDI-48B, 104-IDI-48BC). The base port addresses for
 991	  the devices may be configured via the base module parameter. The
 992	  interrupt line numbers for the devices may be configured via the irq
 993	  module parameter.
 994
 995config GPIO_F7188X
 996	tristate "Fintek and Nuvoton Super-I/O GPIO support"
 997	help
 998	  This option enables support for GPIOs found on Fintek Super-I/O
 999	  chips F71869, F71869A, F71882FG, F71889F and F81866.
1000	  As well as Nuvoton Super-I/O chip NCT6126D.
1001
1002	  To compile this driver as a module, choose M here: the module will
1003	  be called f7188x-gpio.
1004
1005config GPIO_GPIO_MM
1006	tristate "Diamond Systems GPIO-MM GPIO support"
1007	depends on PC104
1008	select ISA_BUS_API
1009	select REGMAP_MMIO
1010	select GPIO_I8255
1011	help
1012	  Enables GPIO support for the Diamond Systems GPIO-MM and GPIO-MM-12.
1013
1014	  The Diamond Systems GPIO-MM device features 48 lines of digital I/O
1015	  via the emulation of dual 82C55A PPI chips. This driver provides GPIO
1016	  support for these 48 channels of digital I/O.
1017
1018	  The base port addresses for the devices may be configured via the base
1019	  array module parameter.
1020
1021config GPIO_IT87
1022	tristate "IT87xx GPIO support"
1023	help
1024	  Say yes here to support GPIO functionality of IT87xx Super I/O chips.
1025
1026	  This driver is tested with ITE IT8728 and IT8732 Super I/O chips, and
1027	  supports the IT8761E, IT8613, IT8620E, and IT8628E Super I/O chips as
1028	  well.
1029
1030	  To compile this driver as a module, choose M here: the module will
1031	  be called gpio_it87.
1032
1033config GPIO_SCH
1034	tristate "Intel SCH/TunnelCreek/Centerton/Quark X1000 GPIO"
1035	depends on (X86 || COMPILE_TEST) && ACPI
1036	depends on LPC_SCH
1037	select GPIOLIB_IRQCHIP
1038	help
1039	  Say yes here to support GPIO interface on Intel Poulsbo SCH,
1040	  Intel Tunnel Creek processor, Intel Centerton processor or
1041	  Intel Quark X1000 SoC.
1042
1043	  The Intel SCH contains a total of 14 GPIO pins. Ten GPIOs are
1044	  powered by the core power rail and are turned off during sleep
1045	  modes (S3 and higher). The remaining four GPIOs are powered by
1046	  the Intel SCH suspend power supply. These GPIOs remain
1047	  active during S3. The suspend-powered GPIOs can be used to wake the
1048	  system from the Suspend-to-RAM state.
1049
1050	  The Intel Tunnel Creek processor has 5 GPIOs powered by the
1051	  core power rail and 9 from suspend power supply.
1052
1053	  The Intel Centerton processor has a total of 30 GPIO pins.
1054	  Twenty-one are powered by the core power rail and 9 from the
1055	  suspend power supply.
1056
1057	  The Intel Quark X1000 SoC has 2 GPIOs powered by the core
1058	  power well and 6 from the suspend power well.
1059
1060config GPIO_SCH311X
1061	tristate "SMSC SCH311x SuperI/O GPIO"
1062	help
1063	  Driver to enable the GPIOs found on SMSC SMSC SCH3112, SCH3114 and
1064	  SCH3116 "Super I/O" chipsets.
1065
1066	  To compile this driver as a module, choose M here: the module will
1067	  be called gpio-sch311x.
1068
1069config GPIO_TS5500
1070	tristate "TS-5500 DIO blocks and compatibles"
1071	depends on TS5500 || COMPILE_TEST
1072	help
1073	  This driver supports Digital I/O exposed by pin blocks found on some
1074	  Technologic Systems platforms. It includes, but is not limited to, 3
1075	  blocks of the TS-5500: DIO1, DIO2 and the LCD port, and the TS-5600
1076	  LCD port.
1077
1078config GPIO_WINBOND
1079	tristate "Winbond Super I/O GPIO support"
1080	select ISA_BUS_API
1081	help
1082	  This option enables support for GPIOs found on Winbond Super I/O
1083	  chips.
1084	  Currently, only W83627UHG (also known as Nuvoton NCT6627UD) is
1085	  supported.
1086
1087	  You will need to provide a module parameter "gpios", or a
1088	  boot-time parameter "gpio_winbond.gpios" with a bitmask of GPIO
1089	  ports to enable (bit 0 is GPIO1, bit 1 is GPIO2, etc.).
1090
1091	  To compile this driver as a module, choose M here: the module will
1092	  be called gpio-winbond.
1093
1094config GPIO_WS16C48
1095	tristate "WinSystems WS16C48 GPIO support"
1096	select ISA_BUS_API
1097	select REGMAP_IRQ
1098	select REGMAP_MMIO
1099	select GPIOLIB_IRQCHIP
1100	select GPIO_REGMAP
1101	help
1102	  Enables GPIO support for the WinSystems WS16C48. The base port
1103	  addresses for the devices may be configured via the base module
1104	  parameter. The interrupt line numbers for the devices may be
1105	  configured via the irq module parameter.
1106
1107endmenu
1108
1109menu "I2C GPIO expanders"
1110	depends on I2C
1111
1112config GPIO_ADNP
1113	tristate "Avionic Design N-bit GPIO expander"
1114	depends on OF_GPIO
1115	select GPIOLIB_IRQCHIP
1116	help
1117	  This option enables support for N GPIOs found on Avionic Design
1118	  I2C GPIO expanders. The register space will be extended by powers
1119	  of two, so the controller will need to accommodate for that. For
1120	  example: if a controller provides 48 pins, 6 registers will be
1121	  enough to represent all pins, but the driver will assume a
1122	  register layout for 64 pins (8 registers).
1123
1124config GPIO_FXL6408
1125	tristate "FXL6408 I2C GPIO expander"
1126	select GPIO_REGMAP
1127	select REGMAP_I2C
1128	help
1129	  GPIO driver for Fairchild Semiconductor FXL6408 GPIO expander.
1130
1131	  To compile this driver as a module, choose M here: the module will
1132	  be called gpio-fxl6408.
1133
1134config GPIO_DS4520
1135	tristate "DS4520 I2C GPIO expander"
1136	select REGMAP_I2C
1137	select GPIO_REGMAP
1138	help
1139	  GPIO driver for ADI DS4520 I2C-based GPIO expander.
1140	  Say yes here to enable the GPIO driver for the ADI DS4520 chip.
1141
1142	  To compile this driver as a module, choose M here: the module will
1143	  be called gpio-ds4520.
1144
1145config GPIO_GW_PLD
1146	tristate "Gateworks PLD GPIO Expander"
1147	depends on OF_GPIO
1148	help
1149	  Say yes here to provide access to the Gateworks I2C PLD GPIO
1150	  Expander. This is used at least on the Cambria GW2358-4.
1151
1152config GPIO_MAX7300
1153	tristate "Maxim MAX7300 GPIO expander"
1154	select GPIO_MAX730X
1155	help
1156	  GPIO driver for Maxim MAX7300 I2C-based GPIO expander.
1157
1158config GPIO_MAX732X
1159	tristate "MAX7319, MAX7320-7327 I2C Port Expanders"
1160	help
1161	  Say yes here to support the MAX7319, MAX7320-7327 series of I2C
1162	  Port Expanders. Each IO port on these chips has a fixed role of
1163	  Input (designated by 'I'), Push-Pull Output ('O'), or Open-Drain
1164	  Input and Output (designed by 'P'). The combinations are listed
1165	  below:
1166
1167	  8 bits:       max7319 (8I), max7320 (8O), max7321 (8P),
1168	                max7322 (4I4O), max7323 (4P4O)
1169
1170	  16 bits:      max7324 (8I8O), max7325 (8P8O),
1171	                max7326 (4I12O), max7327 (4P12O)
1172
1173	  Board setup code must specify the model to use, and the start
1174	  number for these GPIOs.
1175
1176config GPIO_MAX732X_IRQ
1177	bool "Interrupt controller support for MAX732x"
1178	depends on GPIO_MAX732X=y
1179	select GPIOLIB_IRQCHIP
1180	help
1181	  Say yes here to enable the max732x to be used as an interrupt
1182	  controller. It requires the driver to be built in the kernel.
1183
1184config GPIO_PCA953X
1185	tristate "PCA95[357]x, PCA9698, TCA64xx, and MAX7310 I/O ports"
1186	select REGMAP_I2C
1187	help
1188	  Say yes here to provide access to several register-oriented
1189	  SMBus I/O expanders, made mostly by NXP or TI.  Compatible
1190	  models include:
1191
1192	  4 bits:       pca9536, pca9537
1193
1194	  8 bits:       max7310, max7315, pca6107, pca9534, pca9538, pca9554,
1195	                pca9556, pca9557, pca9574, tca6408, tca9554, xra1202,
1196			pcal6408, pcal9554b, tca9538, tcal6408
1197
1198	  16 bits:      max7312, max7313, pca9535, pca9539, pca9555, pca9575,
1199	                tca6416, pca6416, pcal6416, pcal9535, pcal9555a, max7318,
1200			tca9539, tcal6416
1201
1202	  18 bits:	tca6418
1203
1204	  24 bits:      tca6424, pcal6524
1205
1206	  40 bits:      pca9505, pca9698, pca9506
1207
1208config GPIO_PCA953X_IRQ
1209	bool "Interrupt controller support for PCA953x"
1210	depends on GPIO_PCA953X
1211	select GPIOLIB_IRQCHIP
1212	help
1213	  Say yes here to enable the pca953x to be used as an interrupt
1214	  controller.
1215
1216config GPIO_PCA9570
1217	tristate "PCA9570 4-Bit I2C GPO expander"
1218	help
1219	  Say yes here to enable the GPO driver for the NXP PCA9570 chip.
1220
1221	  To compile this driver as a module, choose M here: the module will
1222	  be called gpio-pca9570.
1223
1224config GPIO_PCF857X
1225	tristate "PCF857x, PCA{85,96}7x, and MAX732[89] I2C GPIO expanders"
1226	select GPIOLIB_IRQCHIP
1227	select IRQ_DOMAIN
1228	help
1229	  Say yes here to provide access to most "quasi-bidirectional" I2C
1230	  GPIO expanders used for additional digital outputs or inputs.
1231	  Most of these parts are from NXP, though TI is a second source for
1232	  some of them.  Compatible models include:
1233
1234	  8 bits:   pcf8574, pcf8574a, pca8574, pca8574a,
1235	            pca9670, pca9672, pca9674, pca9674a,
1236	            max7328, max7329
1237
1238	  16 bits:  pcf8575, pcf8575c, pca8575,
1239	            pca9671, pca9673, pca9675
1240
1241	  Your board setup code will need to declare the expanders in
1242	  use, and assign numbers to the GPIOs they expose.  Those GPIOs
1243	  can then be used from drivers and other kernel code, just like
1244	  other GPIOs, but only accessible from task contexts.
1245
1246	  This driver provides an in-kernel interface to those GPIOs using
1247	  platform-neutral GPIO calls.
1248
1249config GPIO_TPIC2810
1250	tristate "TPIC2810 8-Bit I2C GPO expander"
1251	help
1252	  Say yes here to enable the GPO driver for the TI TPIC2810 chip.
1253
1254	  To compile this driver as a module, choose M here: the module will
1255	  be called gpio-tpic2810.
1256
1257config GPIO_TS4900
1258	tristate "Technologic Systems FPGA I2C GPIO"
1259	depends on SOC_IMX6 || COMPILE_TEST
1260	select REGMAP_I2C
1261	help
1262	  Say yes here to enabled the GPIO driver for Technologic's FPGA core.
1263	  Series supported include TS-4100, TS-4900, TS-7970 and TS-7990.
1264
1265endmenu
1266
1267menu "MFD GPIO expanders"
1268
1269config GPIO_ADP5520
1270	tristate "GPIO Support for ADP5520 PMIC"
1271	depends on PMIC_ADP5520
1272	help
1273	  This option enables support for on-chip GPIO found
1274	  on Analog Devices ADP5520 PMICs.
1275
1276config GPIO_ADP5585
1277	tristate "GPIO Support for ADP5585"
1278	depends on MFD_ADP5585
1279	select GPIOLIB_IRQCHIP
1280	help
1281	  This option enables support for the GPIO function found in the Analog
1282	  Devices ADP5585.
1283
1284config GPIO_ALTERA_A10SR
1285	tristate "Altera Arria10 System Resource GPIO"
1286	depends on MFD_ALTERA_A10SR
1287	help
1288	  Driver for Arria10 Development Kit GPIO expansion which
1289	  includes reads of pushbuttons and DIP switches as well
1290	  as writes to LEDs.
1291
1292config GPIO_ARIZONA
1293	tristate "Wolfson Microelectronics Arizona class devices"
1294	depends on MFD_ARIZONA
1295	help
1296	  Support for GPIOs on Wolfson Arizona class devices.
1297
1298config GPIO_BD71815
1299	tristate "ROHM BD71815 PMIC GPIO support"
1300	depends on MFD_ROHM_BD71828
1301	help
1302	  Support for GPO(s) on ROHM BD71815 PMIC. There are two GPOs
1303	  available on the ROHM PMIC.
1304
1305	  This driver can also be built as a module. If so, the module
1306	  will be called gpio-bd71815.
1307
1308config GPIO_BD71828
1309	tristate "ROHM BD71828 GPIO support"
1310	depends on MFD_ROHM_BD71828
1311	help
1312	  Support for GPIOs on ROHM BD71828 PMIC. There are three GPIOs
1313	  available on the ROHM PMIC in total. The GPIOs are limited to
1314	  outputs only and pins must be configured to GPIO outputs by
1315	  OTP. Enable this only if you want to use these pins as outputs.
1316
1317	  This driver can also be built as a module. If so, the module
1318	  will be called gpio-bd71828.
1319
1320config GPIO_BD9571MWV
1321	tristate "ROHM BD9571 GPIO support"
1322	depends on MFD_BD9571MWV
1323	help
1324	  Support for GPIOs on ROHM BD9571 PMIC. There are two GPIOs
1325	  available on the ROHM PMIC in total, both of which can also
1326	  generate interrupts.
1327
1328	  This driver can also be built as a module. If so, the module
1329	  will be called gpio-bd9571mwv.
1330
1331config GPIO_CGBC
1332	tristate "Congatec Board Controller GPIO support"
1333	depends on MFD_CGBC
1334	help
1335	  Select this option to enable GPIO support for the Congatec Board
1336	  Controller.
1337
1338	  This driver can also be built as a module. If so, the module will be
1339	  called gpio-cgbc.
1340
1341config GPIO_CROS_EC
1342	tristate "ChromeOS EC GPIO support"
1343	depends on CROS_EC
1344	help
1345	  GPIO driver for the ChromeOS Embedded Controller (EC). GPIOs
1346	  cannot be set unless the system is unlocked.
1347
1348	  This driver can also be built as a module. If so, the module
1349	  will be called gpio-cros-ec.
1350
1351config GPIO_CRYSTAL_COVE
1352	tristate "GPIO support for Crystal Cove PMIC"
1353	depends on (X86 || COMPILE_TEST) && INTEL_SOC_PMIC
1354	select GPIOLIB_IRQCHIP
1355	help
1356	  Support for GPIO pins on Crystal Cove PMIC.
1357
1358	  Say Yes if you have a Intel SoC-based tablet with Crystal Cove PMIC
1359	  inside.
1360
1361	  This driver can also be built as a module. If so, the module will be
1362	  called gpio-crystalcove.
1363
1364config GPIO_CS5535
1365	tristate "AMD CS5535/CS5536 GPIO support"
1366	depends on X86 || MIPS || COMPILE_TEST
1367	depends on MFD_CS5535
1368	help
1369	  The AMD CS5535 and CS5536 southbridges support 28 GPIO pins that
1370	  can be used for quite a number of things.  The CS5535/6 is found on
1371	  AMD Geode and Lemote Yeeloong devices.
1372
1373	  If unsure, say N.
1374
1375config GPIO_DA9052
1376	tristate "Dialog DA9052 GPIO"
1377	depends on PMIC_DA9052
1378	help
1379	  Say yes here to enable the GPIO driver for the DA9052 chip.
1380
1381config GPIO_DA9055
1382	tristate "Dialog Semiconductor DA9055 GPIO"
1383	depends on MFD_DA9055
1384	help
1385	  Say yes here to enable the GPIO driver for the DA9055 chip.
1386
1387	  The Dialog DA9055 PMIC chip has 3 GPIO pins that can be
1388	  be controlled by this driver.
1389
1390	  If driver is built as a module it will be called gpio-da9055.
1391
1392config GPIO_DLN2
1393	tristate "Diolan DLN2 GPIO support"
1394	depends on MFD_DLN2
1395	select GPIOLIB_IRQCHIP
1396
1397	help
1398	  Select this option to enable GPIO driver for the Diolan DLN2
1399	  board.
1400
1401	  This driver can also be built as a module. If so, the module
1402	  will be called gpio-dln2.
1403
1404config HTC_EGPIO
1405	bool "HTC EGPIO support"
1406	depends on ARM || COMPILE_TEST
1407	help
1408	  This driver supports the CPLD egpio chip present on
1409	  several HTC phones.  It provides basic support for input
1410	  pins, output pins, and IRQs.
1411
1412config GPIO_ELKHARTLAKE
1413	tristate "Intel Elkhart Lake PSE GPIO support"
1414	depends on INTEL_EHL_PSE_IO
1415	select GPIO_TANGIER
1416	help
1417	  Select this option to enable GPIO support for Intel Elkhart Lake
1418	  PSE GPIO IP.
1419
1420	  To compile this driver as a module, choose M here: the module will
1421	  be called gpio-elkhartlake.
1422
1423config GPIO_JANZ_TTL
1424	tristate "Janz VMOD-TTL Digital IO Module"
1425	depends on MFD_JANZ_CMODIO
1426	help
1427	  This enables support for the Janz VMOD-TTL Digital IO module.
1428	  This driver provides support for driving the pins in output
1429	  mode only. Input mode is not supported.
1430
1431config GPIO_KEMPLD
1432	tristate "Kontron ETX / COMexpress GPIO"
1433	depends on MFD_KEMPLD
1434	help
1435	  This enables support for the PLD GPIO interface on some Kontron ETX
1436	  and COMexpress (ETXexpress) modules.
1437
1438	  This driver can also be built as a module. If so, the module will be
1439	  called gpio-kempld.
1440
1441config GPIO_LJCA
1442	tristate "INTEL La Jolla Cove Adapter GPIO support"
1443	depends on USB_LJCA
1444	select GPIOLIB_IRQCHIP
1445	default USB_LJCA
1446	help
1447	  Select this option to enable GPIO driver for the INTEL
1448	  La Jolla Cove Adapter (LJCA) board.
1449
1450	  This driver can also be built as a module. If so, the module
1451	  will be called gpio-ljca.
1452
1453config GPIO_LP3943
1454	tristate "TI/National Semiconductor LP3943 GPIO expander"
1455	depends on MFD_LP3943
1456	help
1457	  GPIO driver for LP3943 MFD.
1458	  LP3943 can be used as a GPIO expander which provides up to 16 GPIOs.
1459	  Open drain outputs are required for this usage.
1460
1461config GPIO_LP873X
1462	tristate "TI LP873X GPO"
1463	depends on MFD_TI_LP873X
1464	help
1465	  This driver supports the GPO on TI Lp873x PMICs. 2 GPOs are present
1466	  on LP873X PMICs.
1467
1468	  This driver can also be built as a module. If so, the module will be
1469	  called gpio-lp873x.
1470
1471config GPIO_LP87565
1472	tristate "TI LP87565 GPIO"
1473	depends on MFD_TI_LP87565
1474	help
1475	  This driver supports the GPIO on TI Lp873565 PMICs. 3 GPIOs are present
1476	  on LP87565 PMICs.
1477
1478	  This driver can also be built as a module. If so, the module will be
1479	  called gpio-lp87565.
1480
1481config GPIO_MACSMC
1482	tristate "Apple Mac SMC GPIO"
1483	depends on MFD_MACSMC
1484	help
1485	  Support for GPIOs controlled by the SMC microcontroller on Apple Mac
1486	  systems.
1487
1488	  This driver can also be built as a module. If so, the module will be
1489	  called gpio-macsmc.
1490
1491config GPIO_MADERA
1492	tristate "Cirrus Logic Madera class codecs"
1493	depends on PINCTRL_MADERA
1494	help
1495	  Support for GPIOs on Cirrus Logic Madera class codecs.
1496
1497config GPIO_MAX7360
1498	tristate "MAX7360 GPIO support"
1499	depends on MFD_MAX7360
1500	select GPIO_REGMAP
1501	select REGMAP_IRQ
1502	help
1503	  Allows to use MAX7360 I/O Expander PWM lines as GPIO and keypad COL
1504	  lines as GPO.
1505
1506	  This driver can also be built as a module. If so, the module will be
1507	  called gpio-max7360.
1508
1509config GPIO_MAX77620
1510	tristate "GPIO support for PMIC MAX77620 and MAX20024"
1511	depends on MFD_MAX77620
1512	select GPIOLIB_IRQCHIP
1513	help
1514	  GPIO driver for MAX77620 and MAX20024 PMIC from Maxim Semiconductor.
1515	  MAX77620 PMIC has 8 pins that can be configured as GPIOs. The
1516	  driver also provides interrupt support for each of the GPIOs.
1517	  Say yes here to enable the max77620 to be used as GPIO controller.
1518
1519config GPIO_MAX77650
1520	tristate "Maxim MAX77650/77651 GPIO support"
1521	depends on MFD_MAX77650
1522	help
1523	  GPIO driver for MAX77650/77651 PMIC from Maxim Semiconductor.
1524	  These chips have a single pin that can be configured as GPIO.
1525
1526config GPIO_MAX77759
1527	tristate "Maxim Integrated MAX77759 GPIO support"
1528	depends on MFD_MAX77759
1529	default MFD_MAX77759
1530	select GPIOLIB_IRQCHIP
1531	help
1532	  GPIO driver for MAX77759 PMIC from Maxim Integrated.
1533	  There are two GPIOs available on these chips in total, both of
1534	  which can also generate interrupts.
1535
1536	  This driver can also be built as a module. If so, the module will be
1537	  called gpio-max77759.
1538
1539config GPIO_NCT6694
1540	tristate "Nuvoton NCT6694 GPIO controller support"
1541	depends on MFD_NCT6694
1542	select GENERIC_IRQ_CHIP
1543	select GPIOLIB_IRQCHIP
1544	help
1545	  This driver supports 8 GPIO pins per bank that can all be interrupt
1546	  sources.
1547
1548	  This driver can also be built as a module. If so, the module will be
1549	  called gpio-nct6694.
1550
1551config GPIO_PALMAS
1552	tristate "TI PALMAS series PMICs GPIO"
1553	depends on MFD_PALMAS
1554	help
1555	  Select this option to enable GPIO driver for the TI PALMAS
1556	  series chip family.
1557
1558config GPIO_PMIC_EIC_SPRD
1559	tristate "Spreadtrum PMIC EIC support"
1560	depends on MFD_SC27XX_PMIC || COMPILE_TEST
1561	depends on OF_GPIO
1562	select GPIOLIB_IRQCHIP
1563	help
1564	  Say yes here to support Spreadtrum PMIC EIC device.
1565
1566config GPIO_QIXIS_FPGA
1567	tristate "NXP QIXIS FPGA GPIO support"
1568	depends on MFD_SIMPLE_MFD_I2C || COMPILE_TEST
1569	select GPIO_REGMAP
1570	select REGMAP_MMIO
1571	help
1572	  This enables support for the GPIOs found in the QIXIS FPGA which is
1573	  integrated on some NXP Layerscape boards such as LX2160ARDB and
1574	  LS1046AQDS.
1575
1576config GPIO_RC5T583
1577	bool "RICOH RC5T583 GPIO"
1578	depends on MFD_RC5T583
1579	help
1580	  Select this option to enable GPIO driver for the Ricoh RC5T583
1581	  chip family.
1582	  This driver provides the support for driving/reading the GPIO pins
1583	  of RC5T583 device through standard GPIO library.
1584
1585config GPIO_SL28CPLD
1586	tristate "Kontron sl28cpld GPIO support"
1587	depends on MFD_SL28CPLD || COMPILE_TEST
1588	select GPIO_REGMAP
1589	select GPIOLIB_IRQCHIP
1590	select REGMAP_IRQ
1591	help
1592	  This enables support for the GPIOs found on the Kontron sl28 CPLD.
1593
1594	  This driver can also be built as a module. If so, the module will be
1595	  called gpio-sl28cpld.
1596
1597config GPIO_STMPE
1598	tristate "STMPE GPIOs"
1599	depends on MFD_STMPE
1600	depends on OF_GPIO
1601	select GPIOLIB_IRQCHIP
1602	help
1603	  This enables support for the GPIOs found on the STMPE I/O
1604	  Expanders.
1605
1606config GPIO_TC3589X
1607	bool "TC3589X GPIOs"
1608	depends on MFD_TC3589X
1609	depends on OF_GPIO
1610	select GPIOLIB_IRQCHIP
1611	help
1612	  This enables support for the GPIOs found on the TC3589X
1613	  I/O Expander.
1614
1615config GPIO_TIMBERDALE
1616	bool "Support for timberdale GPIO IP"
1617	depends on MFD_TIMBERDALE
1618	select GPIOLIB_IRQCHIP
1619	help
1620	Add support for the GPIO IP in the timberdale FPGA.
1621
1622config GPIO_TN48M_CPLD
1623	tristate "Delta Networks TN48M switch CPLD GPIO driver"
1624	depends on MFD_TN48M_CPLD || COMPILE_TEST
1625	select GPIO_REGMAP
1626	help
1627	  This enables support for the GPIOs found on the Delta
1628	  Networks TN48M switch Lattice CPLD. It provides 12 pins in total,
1629	  they are input-only or output-only type.
1630
1631	  This driver can also be built as a module. If so, the
1632	  module will be called gpio-tn48m.
1633
1634config GPIO_TPS65086
1635	tristate "TI TPS65086 GPO"
1636	depends on MFD_TPS65086
1637	help
1638	  This driver supports the GPO on TI TPS65086x PMICs.
1639
1640config GPIO_TPS65218
1641	tristate "TPS65218 GPIO"
1642	depends on MFD_TPS65218
1643	help
1644	  Select this option to enable GPIO driver for the TPS65218
1645	  chip family.
1646
1647config GPIO_TPS65219
1648	tristate "TPS65219 GPIO"
1649	depends on MFD_TPS65219
1650	default MFD_TPS65219
1651	help
1652	  Select this option to enable GPIO driver for the TPS65219 chip
1653	  family.
1654	  GPIO0 is statically configured as either input or output prior to
1655	  Linux boot. It is used for MULTI_DEVICE_ENABLE function. This setting
1656	  is statically configured by NVM. GPIO0 can't be used as a generic
1657	  GPIO. It's either a GPO when MULTI_DEVICE_EN=0 or a GPI when
1658	  MULTI_DEVICE_EN=1.
1659
1660	  This driver can also be built as a module. If so, the module will be
1661	  called gpio_tps65219.
1662
1663config GPIO_TPS6586X
1664	bool "TPS6586X GPIO"
1665	depends on MFD_TPS6586X
1666	help
1667	  Select this option to enable GPIO driver for the TPS6586X
1668	  chip family.
1669
1670config GPIO_TPS65910
1671	bool "TPS65910 GPIO"
1672	depends on MFD_TPS65910
1673	help
1674	  Select this option to enable GPIO driver for the TPS65910
1675	  chip family.
1676
1677config GPIO_TPS65912
1678	tristate "TI TPS65912 GPIO"
1679	depends on MFD_TPS65912
1680	help
1681	  This driver supports TPS65912 GPIO chip.
1682
1683config GPIO_TPS68470
1684	tristate "TPS68470 GPIO"
1685	depends on INTEL_SKL_INT3472
1686	help
1687	  Select this option to enable GPIO driver for the TPS68470
1688	  chip family.
1689	  There are 7 GPIOs and few sensor-related GPIOs supported
1690	  by the TPS68470. While the 7 GPIOs can be configured as
1691	  input or output as appropriate, the sensor related GPIOs
1692	  are "output only" GPIOs.
1693
1694config GPIO_TQMX86
1695	tristate "TQ-Systems TQMx86 GPIO"
1696	depends on MFD_TQMX86 || COMPILE_TEST
1697	depends on HAS_IOPORT_MAP
1698	select GPIOLIB_IRQCHIP
1699	help
1700	  This driver supports GPIO on the TQMX86 IO controller.
1701
1702config GPIO_TWL4030
1703	tristate "TWL4030, TWL5030, and TPS659x0 GPIOs"
1704	depends on TWL4030_CORE
1705	help
1706	  Say yes here to access the GPIO signals of various multi-function
1707	  power management chips from Texas Instruments.
1708
1709config GPIO_TWL6040
1710	tristate "TWL6040 GPO"
1711	depends on TWL6040_CORE
1712	help
1713	  Say yes here to access the GPO signals of twl6040
1714	  audio chip from Texas Instruments.
1715
1716config GPIO_WHISKEY_COVE
1717	tristate "GPIO support for Whiskey Cove PMIC"
1718	depends on (X86 || COMPILE_TEST) && INTEL_SOC_PMIC_BXTWC
1719	select GPIOLIB_IRQCHIP
1720	help
1721	  Support for GPIO pins on Whiskey Cove PMIC.
1722
1723	  Say Yes if you have an Intel SoC-based tablet with Whiskey Cove PMIC
1724	  inside.
1725
1726	  This driver can also be built as a module. If so, the module will be
1727	  called gpio-wcove.
1728
1729config GPIO_WM831X
1730	tristate "WM831x GPIOs"
1731	depends on MFD_WM831X
1732	help
1733	  Say yes here to access the GPIO signals of WM831x power management
1734	  chips from Wolfson Microelectronics.
1735
1736config GPIO_WM8350
1737	tristate "WM8350 GPIOs"
1738	depends on MFD_WM8350
1739	help
1740	  Say yes here to access the GPIO signals of WM8350 power management
1741	  chips from Wolfson Microelectronics.
1742
1743config GPIO_WM8994
1744	tristate "WM8994 GPIOs"
1745	depends on MFD_WM8994
1746	help
1747	  Say yes here to access the GPIO signals of WM8994 audio hub
1748	  CODECs from Wolfson Microelectronics.
1749
1750endmenu
1751
1752menu "PCI GPIO expanders"
1753	depends on PCI
1754
1755config GPIO_AMD8111
1756	tristate "AMD 8111 GPIO driver"
1757	depends on X86 || COMPILE_TEST
1758	depends on HAS_IOPORT_MAP
1759	help
1760	  The AMD 8111 southbridge contains 32 GPIO pins which can be used.
1761
1762	  Note that usually system firmware/ACPI handles GPIO pins on their
1763	  own and users might easily break their systems with uncareful usage
1764	  of this driver!
1765
1766	  If unsure, say N
1767
1768config GPIO_BT8XX
1769	tristate "BT8XX GPIO abuser"
1770	depends on VIDEO_BT848=n || COMPILE_TEST
1771	help
1772	  The BT8xx frame grabber chip has 24 GPIO pins that can be abused
1773	  as a cheap PCI GPIO card.
1774
1775	  This chip can be found on Miro, Hauppauge and STB TV-cards.
1776
1777	  The card needs to be physically altered for using it as a
1778	  GPIO card. For more information on how to build a GPIO card
1779	  from a BT8xx TV card, see the documentation file at
1780	  Documentation/driver-api/gpio/bt8xxgpio.rst
1781
1782	  If unsure, say N.
1783
1784config GPIO_MERRIFIELD
1785	tristate "Intel Merrifield GPIO support"
1786	depends on X86_INTEL_MID
1787	select GPIO_TANGIER
1788	help
1789	  Say Y here to support Intel Merrifield GPIO.
1790
1791config GPIO_MLXBF
1792	tristate "Mellanox BlueField SoC GPIO"
1793	depends on (MELLANOX_PLATFORM && ARM64 && ACPI) || (64BIT && COMPILE_TEST)
1794	select GPIO_GENERIC
1795	help
1796	  Say Y here if you want GPIO support on Mellanox BlueField SoC.
1797
1798config GPIO_MLXBF2
1799	tristate "Mellanox BlueField 2 SoC GPIO"
1800	depends on (MELLANOX_PLATFORM && ARM64 && ACPI) || (64BIT && COMPILE_TEST)
1801	select GPIO_GENERIC
1802	select GPIOLIB_IRQCHIP
1803	help
1804	  Say Y here if you want GPIO support on Mellanox BlueField 2 SoC.
1805
1806config GPIO_MLXBF3
1807	tristate "Mellanox BlueField 3 SoC GPIO"
1808	depends on (MELLANOX_PLATFORM && ARM64) || COMPILE_TEST
1809	select GPIO_GENERIC
1810	select GPIOLIB_IRQCHIP
1811	help
1812	  Say Y if you want GPIO support on Mellanox BlueField 3 SoC.
1813	  This GPIO controller supports interrupt handling and enables the
1814	  manipulation of certain GPIO pins.
1815	  This controller should be used in parallel with pinctrl-mlxbf3 to
1816	  control the desired GPIOs.
1817	  This driver can also be built as a module called mlxbf3-gpio.
1818
1819config GPIO_ML_IOH
1820	tristate "OKI SEMICONDUCTOR ML7213 IOH GPIO support"
1821	depends on X86 || COMPILE_TEST
1822	select GENERIC_IRQ_CHIP
1823	help
1824	  ML7213 is companion chip for Intel Atom E6xx series.
1825	  This driver can be used for OKI SEMICONDUCTOR ML7213 IOH (Input/Output
1826	  Hub) which is for IVI (In-Vehicle Infotainment) use.
1827	  This driver can access the IOH's GPIO device.
1828
1829config GPIO_PCH
1830	tristate "Intel EG20T PCH/LAPIS Semiconductor IOH (ML7223/ML7831) GPIO"
1831	depends on X86_32 || MIPS || COMPILE_TEST
1832	select GENERIC_IRQ_CHIP
1833	help
1834	  This driver is for PCH (Platform Controller Hub) GPIO of Intel Topcliff,
1835	  which is an IOH (Input/Output Hub) for x86 embedded processor.
1836	  This driver can access PCH GPIO device.
1837
1838	  This driver also can be used for LAPIS Semiconductor IOH (Input/
1839	  Output Hub), ML7223 and ML7831.
1840	  ML7223 IOH is for MP (Media Phone) use.
1841	  ML7831 IOH is for general purpose use.
1842	  ML7223/ML7831 is companion chip for Intel Atom E6xx series.
1843	  ML7223/ML7831 is completely compatible for Intel EG20T PCH.
1844
1845config GPIO_PCI_IDIO_16
1846	tristate "ACCES PCI-IDIO-16 GPIO support"
1847	select REGMAP_MMIO
1848	select GPIO_IDIO_16
1849	help
1850	  Enables GPIO support for the ACCES PCI-IDIO-16. An interrupt is
1851	  generated when any of the inputs change state (low to high or high to
1852	  low). Input filter control is not supported by this driver, and the
1853	  input filters are deactivated by this driver.
1854
1855config GPIO_PCIE_IDIO_24
1856	tristate "ACCES PCIe-IDIO-24 GPIO support"
1857	select REGMAP_IRQ
1858	select REGMAP_MMIO
1859	select GPIOLIB_IRQCHIP
1860	select GPIO_REGMAP
1861	help
1862	  Enables GPIO support for the ACCES PCIe-IDIO-24 family (PCIe-IDIO-24,
1863	  PCIe-IDI-24, PCIe-IDO-24, PCIe-IDIO-12). An interrupt is generated
1864	  when any of the inputs change state (low to high or high to low).
1865	  Input filter control is not supported by this driver, and the input
1866	  filters are deactivated by this driver.
1867
1868config GPIO_RDC321X
1869	tristate "RDC R-321x GPIO support"
1870	select MFD_CORE
1871	select MFD_RDC321X
1872	help
1873	  Support for the RDC R321x SoC GPIOs over southbridge
1874	  PCI configuration space.
1875
1876config GPIO_SODAVILLE
1877	bool "Intel Sodaville GPIO support"
1878	depends on X86 && OF
1879	select GPIO_GENERIC
1880	select GENERIC_IRQ_CHIP
1881	help
1882	  Say Y here to support Intel Sodaville GPIO.
1883
1884endmenu
1885
1886menu "SPI GPIO expanders"
1887	depends on SPI_MASTER
1888
1889config GPIO_74X164
1890	tristate "74x164 serial-in/parallel-out 8-bits shift register"
1891	help
1892	  Driver for 74x164 compatible serial-in/parallel-out 8-outputs
1893	  shift registers. This driver can be used to provide access
1894	  to more GPIO outputs.
1895
1896config GPIO_MAX3191X
1897	tristate "Maxim MAX3191x industrial serializer"
1898	select CRC8
1899	help
1900	  GPIO driver for Maxim MAX31910, MAX31911, MAX31912, MAX31913,
1901	  MAX31953 and MAX31963 industrial serializer, a daisy-chainable
1902	  chip to make 8 digital 24V inputs available via SPI.  Supports
1903	  CRC checksums to guard against electromagnetic interference,
1904	  as well as undervoltage and overtemperature detection.
1905
1906config GPIO_MAX7301
1907	tristate "Maxim MAX7301 GPIO expander"
1908	select GPIO_MAX730X
1909	help
1910	  GPIO driver for Maxim MAX7301 SPI-based GPIO expander.
1911
1912config GPIO_MC33880
1913	tristate "Freescale MC33880 high-side/low-side switch"
1914	help
1915	  SPI driver for Freescale MC33880 high-side/low-side switch.
1916	  This provides GPIO interface supporting inputs and outputs.
1917
1918config GPIO_PISOSR
1919	tristate "Generic parallel-in/serial-out shift register"
1920	help
1921	  GPIO driver for SPI compatible parallel-in/serial-out shift
1922	  registers. These are input only devices.
1923
1924config GPIO_XRA1403
1925	tristate "EXAR XRA1403 16-bit GPIO expander"
1926	select REGMAP_SPI
1927	help
1928	  GPIO driver for EXAR XRA1403 16-bit SPI-based GPIO expander.
1929
1930config GPIO_MOXTET
1931	tristate "Turris Mox Moxtet bus GPIO expander"
1932	depends on MOXTET
1933	help
1934	  Say yes here if you are building for the Turris Mox router.
1935	  This is the driver needed for configuring the GPIOs via the Moxtet
1936	  bus. For example the Mox module with SFP cage needs this driver
1937	  so that phylink can use corresponding GPIOs.
1938
1939endmenu
1940
1941menu "USB GPIO expanders"
1942	depends on USB
1943
1944config GPIO_VIPERBOARD
1945	tristate "Viperboard GPIO a & b support"
1946	depends on MFD_VIPERBOARD
1947	help
1948	  Say yes here to access the GPIO signals of Nano River
1949	  Technologies Viperboard. There are two GPIO chips on the
1950	  board: gpioa and gpiob.
1951	  See viperboard API specification and Nano
1952	  River Tech's viperboard.h for detailed meaning
1953	  of the module parameters.
1954
1955config GPIO_MPSSE
1956	tristate "FTDI MPSSE GPIO support"
1957	select GPIOLIB_IRQCHIP
1958	help
1959	  GPIO driver for FTDI's MPSSE interface. These can do input and
1960	  output. Each MPSSE provides 16 IO pins.
1961
1962config GPIO_USBIO
1963	tristate "Intel USBIO GPIO support"
1964	depends on USB_USBIO
1965	default USB_USBIO
1966	help
1967	  Select this option to enable GPIO driver for the INTEL
1968	  USBIO driver stack.
1969
1970	  This driver can also be built as a module. If so, the module
1971	  will be called gpio_usbio.
1972
1973endmenu
1974
1975menu "Virtual GPIO drivers"
1976
1977config GPIO_AGGREGATOR
1978	tristate "GPIO Aggregator"
1979	select CONFIGFS_FS
1980	select DEV_SYNC_PROBE
1981	help
1982	  Say yes here to enable the GPIO Aggregator, which provides a way to
1983	  aggregate existing GPIO lines into a new virtual GPIO chip.
1984	  This can serve the following purposes:
1985	    - Assign permissions for a collection of GPIO lines to a user,
1986	    - Export a collection of GPIO lines to a virtual machine,
1987	    - Provide a generic driver for a GPIO-operated device in an
1988	      industrial control context, to be operated from userspace using
1989	      the GPIO chardev interface.
1990
1991config GPIO_LATCH
1992	tristate "GPIO latch driver"
1993	help
1994	  Say yes here to enable a driver for GPIO multiplexers based on latches
1995	  connected to other GPIOs.
1996
1997config GPIO_MOCKUP
1998	tristate "GPIO Testing Driver (DEPRECATED)"
1999	select IRQ_SIM
2000	help
2001	  This module is DEPRECATED. Please consider using gpio-sim instead.
2002
2003	  This enables GPIO Testing driver, which provides a way to test GPIO
2004	  subsystem through sysfs (or char device) and debugfs.
2005	  User could use it through the script in
2006	  tools/testing/selftests/gpio/gpio-mockup.sh. Reference the usage in
2007	  it.
2008
2009config GPIO_VIRTIO
2010	tristate "VirtIO GPIO support"
2011	depends on VIRTIO
2012	select GPIOLIB_IRQCHIP
2013	help
2014	  Say Y here to enable guest support for virtio-based GPIO controllers.
2015
2016	  These virtual GPIOs can be routed to real GPIOs or attached to
2017	  simulators on the host (like QEMU).
2018
2019config GPIO_SIM
2020	tristate "GPIO Simulator Module"
2021	select IRQ_SIM
2022	select CONFIGFS_FS
2023	select DEV_SYNC_PROBE
2024	help
2025	  This enables the GPIO simulator - a configfs-based GPIO testing
2026	  driver.
2027
2028config GPIO_SHARED_PROXY
2029	tristate "Proxy driver for non-exclusive GPIOs"
2030	default m
2031	depends on GPIO_SHARED || COMPILE_TEST
2032	select AUXILIARY_BUS
2033	help
2034	  This enables the GPIO shared proxy driver - an abstraction layer
2035	  for GPIO pins that are shared by multiple devices.
2036
2037endmenu
2038
2039menu "GPIO Debugging utilities"
2040
2041config GPIO_SLOPPY_LOGIC_ANALYZER
2042	tristate "Sloppy GPIO logic analyzer"
2043	depends on (GPIOLIB || COMPILE_TEST) && CPUSETS && DEBUG_FS && EXPERT
2044	help
2045	  This option enables support for a sloppy logic analyzer using polled
2046	  GPIOs. Use the 'tools/gpio/gpio-sloppy-logic-analyzer' script with
2047	  this driver. The script will make it easier to use and will also
2048	  isolate a CPU for the polling task. Note that this is a last resort
2049	  analyzer which can be affected by latencies, non-deterministic code
2050	  paths, or NMIs. However, for e.g. remote development, it may be useful
2051	  to get a first view and aid further debugging.
2052
2053	  If this driver is built as a module it will be called
2054	  'gpio-sloppy-logic-analyzer'.
2055
2056config GPIO_VIRTUSER
2057	tristate "GPIO Virtual User Testing Module"
2058	select DEBUG_FS
2059	select CONFIGFS_FS
2060	select IRQ_WORK
2061	select DEV_SYNC_PROBE
2062	help
2063	  Say Y here to enable the configurable, configfs-based virtual GPIO
2064	  consumer testing driver.
2065
2066	  This driver is aimed as a helper in spotting any regressions in
2067	  hot-unplug handling in GPIOLIB.
2068
2069endmenu
2070
2071endif
2072
2073config DEV_SYNC_PROBE
2074	tristate