[mirror_ubuntu-bionic-kernel.git] / drivers / gpio / Kconfig

#
# platform-neutral GPIO infrastructure and expanders
#

config ARCH_WANT_OPTIONAL_GPIOLIB
	bool
	help
	  Select this config option from the architecture Kconfig, if
	  it is possible to use gpiolib on the architecture, but let the
	  user decide whether to actually build it or not.
	  Select this instead of ARCH_REQUIRE_GPIOLIB, if your architecture does
	  not depend on GPIOs being available, but rather let the user
	  decide whether he needs it or not.

config ARCH_REQUIRE_GPIOLIB
	bool
	select GPIOLIB
	help
	  Platforms select gpiolib if they use this infrastructure
	  for all their GPIOs, usually starting with ones integrated
	  into SOC processors.
	  Selecting this from the architecture code will cause the gpiolib
	  code to always get built in.


menuconfig GPIOLIB
	bool "GPIO Support"
	depends on ARCH_WANT_OPTIONAL_GPIOLIB || ARCH_REQUIRE_GPIOLIB
	select GENERIC_GPIO
	help
	  This enables GPIO support through the generic GPIO library.
	  You only need to enable this, if you also want to enable
	  one or more of the GPIO expansion card drivers below.

	  If unsure, say N.

if GPIOLIB

config DEBUG_GPIO
	bool "Debug GPIO calls"
	depends on DEBUG_KERNEL
	help
	  Say Y here to add some extra checks and diagnostics to GPIO calls.
	  These checks help ensure that GPIOs have been properly initialized
	  before they are used, and that sleeping calls are not made from
	  non-sleeping contexts.  They can make bitbanged serial protocols
	  slower.  The diagnostics help catch the type of setup errors
	  that are most common when setting up new platforms or boards.

config GPIO_SYSFS
	bool "/sys/class/gpio/... (sysfs interface)"
	depends on SYSFS && EXPERIMENTAL
	help
	  Say Y here to add a sysfs interface for GPIOs.

	  This is mostly useful to work around omissions in a system's
	  kernel support.  Those are common in custom and semicustom
	  hardware assembled using standard kernels with a minimum of
	  custom patches.  In those cases, userspace code may import
	  a given GPIO from the kernel, if no kernel driver requested it.

	  Kernel drivers may also request that a particular GPIO be
	  exported to userspace; this can be useful when debugging.

# put expanders in the right section, in alphabetical order

config GPIO_MAX730X
	tristate

comment "Memory mapped GPIO expanders:"

config GPIO_BASIC_MMIO
	tristate "Basic memory-mapped GPIO controllers support"
	help
	  Say yes here to support basic memory-mapped GPIO controllers.

config GPIO_IT8761E
	tristate "IT8761E GPIO support"
	depends on GPIOLIB
	help
	  Say yes here to support GPIO functionality of IT8761E super I/O chip.

config GPIO_PL061
	bool "PrimeCell PL061 GPIO support"
	depends on ARM_AMBA
	help
	  Say yes here to support the PrimeCell PL061 GPIO device

config GPIO_XILINX
	bool "Xilinx GPIO support"
	depends on PPC_OF || MICROBLAZE
	help
	  Say yes here to support the Xilinx FPGA GPIO device

config GPIO_VR41XX
	tristate "NEC VR4100 series General-purpose I/O Uint support"
	depends on CPU_VR41XX
	help
	  Say yes here to support the NEC VR4100 series General-purpose I/O Uint

config GPIO_SCH
	tristate "Intel SCH GPIO"
	depends on GPIOLIB && PCI
	select MFD_CORE
	select LPC_SCH
	help
	  Say yes here to support GPIO interface on Intel Poulsbo SCH.
	  The Intel SCH contains a total of 14 GPIO pins. Ten GPIOs are
	  powered by the core power rail and are turned off during sleep
	  modes (S3 and higher). The remaining four GPIOs are powered by
	  the Intel SCH suspend power supply. These GPIOs remain
	  active during S3. The suspend powered GPIOs can be used to wake the
	  system from the Suspend-to-RAM state.

	  This driver can also be built as a module. If so, the module
	  will be called sch-gpio.

comment "I2C GPIO expanders:"

config GPIO_MAX7300
	tristate "Maxim MAX7300 GPIO expander"
	depends on I2C
	select GPIO_MAX730X
	help
	  GPIO driver for Maxim MAX7301 I2C-based GPIO expander.

config GPIO_MAX732X
	tristate "MAX7319, MAX7320-7327 I2C Port Expanders"
	depends on I2C
	help
	  Say yes here to support the MAX7319, MAX7320-7327 series of I2C
	  Port Expanders. Each IO port on these chips has a fixed role of
	  Input (designated by 'I'), Push-Pull Output ('O'), or Open-Drain
	  Input and Output (designed by 'P'). The combinations are listed
	  below:

	  8 bits:	max7319 (8I), max7320 (8O), max7321 (8P),
		  	max7322 (4I4O), max7323 (4P4O)

	  16 bits:	max7324 (8I8O), max7325 (8P8O),
		  	max7326 (4I12O), max7327 (4P12O)

	  Board setup code must specify the model to use, and the start
	  number for these GPIOs.

config GPIO_MAX732X_IRQ
	bool "Interrupt controller support for MAX732x"
	depends on GPIO_MAX732X=y && GENERIC_HARDIRQS
	help
	  Say yes here to enable the max732x to be used as an interrupt
	  controller. It requires the driver to be built in the kernel.

config GPIO_PCA953X
	tristate "PCA953x, PCA955x, TCA64xx, and MAX7310 I/O ports"
	depends on I2C
	help
	  Say yes here to provide access to several register-oriented
	  SMBus I/O expanders, made mostly by NXP or TI.  Compatible
	  models include:

	  4 bits:	pca9536, pca9537

	  8 bits:	max7310, pca9534, pca9538, pca9554, pca9557,
	  		tca6408

	  16 bits:	pca9535, pca9539, pca9555, tca6416

	  This driver can also be built as a module.  If so, the module
	  will be called pca953x.

config GPIO_PCA953X_IRQ
	bool "Interrupt controller support for PCA953x"
	depends on GPIO_PCA953X=y
	help
	  Say yes here to enable the pca953x to be used as an interrupt
	  controller. It requires the driver to be built in the kernel.

config GPIO_PCF857X
	tristate "PCF857x, PCA{85,96}7x, and MAX732[89] I2C GPIO expanders"
	depends on I2C
	help
	  Say yes here to provide access to most "quasi-bidirectional" I2C
	  GPIO expanders used for additional digital outputs or inputs.
	  Most of these parts are from NXP, though TI is a second source for
	  some of them.  Compatible models include:

	  8 bits:   pcf8574, pcf8574a, pca8574, pca8574a,
	            pca9670, pca9672, pca9674, pca9674a,
	  	    max7328, max7329

	  16 bits:  pcf8575, pcf8575c, pca8575,
	            pca9671, pca9673, pca9675

	  Your board setup code will need to declare the expanders in
	  use, and assign numbers to the GPIOs they expose.  Those GPIOs
	  can then be used from drivers and other kernel code, just like
	  other GPIOs, but only accessible from task contexts.

	  This driver provides an in-kernel interface to those GPIOs using
	  platform-neutral GPIO calls.

config GPIO_SX150X
	bool "Semtech SX150x I2C GPIO expander"
	depends on I2C=y
	default n
	help
	  Say yes here to provide support for Semtech SX150-series I2C
	  GPIO expanders. Compatible models include:

	  8 bits:  sx1508q
	  16 bits: sx1509q

config GPIO_STMPE
	bool "STMPE GPIOs"
	depends on MFD_STMPE
	help
	  This enables support for the GPIOs found on the STMPE I/O
	  Expanders.

config GPIO_TC35892
	bool "TC35892 GPIOs"
	depends on MFD_TC35892
	help
	  This enables support for the GPIOs found on the TC35892
	  I/O Expander.

config GPIO_TWL4030
	tristate "TWL4030, TWL5030, and TPS659x0 GPIOs"
	depends on TWL4030_CORE
	help
	  Say yes here to access the GPIO signals of various multi-function
	  power management chips from Texas Instruments.

config GPIO_WM831X
	tristate "WM831x GPIOs"
	depends on MFD_WM831X
	help
	  Say yes here to access the GPIO signals of WM831x power management
	  chips from Wolfson Microelectronics.

config GPIO_WM8350
	tristate "WM8350 GPIOs"
	depends on MFD_WM8350
	help
	  Say yes here to access the GPIO signals of WM8350 power management
	  chips from Wolfson Microelectronics.

config GPIO_WM8994
	tristate "WM8994 GPIOs"
	depends on MFD_WM8994
	help
	  Say yes here to access the GPIO signals of WM8994 audio hub
	  CODECs from Wolfson Microelectronics.

config GPIO_ADP5520
	tristate "GPIO Support for ADP5520 PMIC"
	depends on PMIC_ADP5520
	help
	  This option enables support for on-chip GPIO found
	  on Analog Devices ADP5520 PMICs.

	  To compile this driver as a module, choose M here: the module will
	  be called adp5520-gpio.

config GPIO_ADP5588
	tristate "ADP5588 I2C GPIO expander"
	depends on I2C
	help
	  This option enables support for 18 GPIOs found
	  on Analog Devices ADP5588 GPIO Expanders.
	  To compile this driver as a module, choose M here: the module will be
	  called adp5588-gpio.

config GPIO_ADP5588_IRQ
	bool "Interrupt controller support for ADP5588"
	depends on GPIO_ADP5588=y
	help
	  Say yes here to enable the adp5588 to be used as an interrupt
	  controller. It requires the driver to be built in the kernel.

comment "PCI GPIO expanders:"

config GPIO_CS5535
	tristate "AMD CS5535/CS5536 GPIO support"
	depends on PCI && !CS5535_GPIO
	help
	  The AMD CS5535 and CS5536 southbridges support 28 GPIO pins that
	  can be used for quite a number of things.  The CS5535/6 is found on
	  AMD Geode and Lemote Yeeloong devices.

	  If unsure, say N.

config GPIO_BT8XX
	tristate "BT8XX GPIO abuser"
	depends on PCI && VIDEO_BT848=n
	help
	  The BT8xx frame grabber chip has 24 GPIO pins than can be abused
	  as a cheap PCI GPIO card.

	  This chip can be found on Miro, Hauppauge and STB TV-cards.

	  The card needs to be physically altered for using it as a
	  GPIO card. For more information on how to build a GPIO card
	  from a BT8xx TV card, see the documentation file at
	  Documentation/bt8xxgpio.txt

	  If unsure, say N.

config GPIO_LANGWELL
	bool "Intel Langwell/Penwell GPIO support"
	depends on PCI
	help
	  Say Y here to support Intel Langwell/Penwell GPIO.

config GPIO_TIMBERDALE
	bool "Support for timberdale GPIO IP"
	depends on MFD_TIMBERDALE && GPIOLIB && HAS_IOMEM
	---help---
	Add support for the GPIO IP in the timberdale FPGA.

config GPIO_RDC321X
	tristate "RDC R-321x GPIO support"
	depends on PCI && GPIOLIB
	select MFD_CORE
	select MFD_RDC321X
	help
	  Support for the RDC R321x SoC GPIOs over southbridge
	  PCI configuration space.

comment "SPI GPIO expanders:"

config GPIO_MAX7301
	tristate "Maxim MAX7301 GPIO expander"
	depends on SPI_MASTER
	select GPIO_MAX730X
	help
	  GPIO driver for Maxim MAX7301 SPI-based GPIO expander.

config GPIO_MCP23S08
	tristate "Microchip MCP23S08 I/O expander"
	depends on SPI_MASTER
	help
	  SPI driver for Microchip MCP23S08 I/O expander.  This provides
	  a GPIO interface supporting inputs and outputs.

config GPIO_MC33880
	tristate "Freescale MC33880 high-side/low-side switch"
	depends on SPI_MASTER
	help
	  SPI driver for Freescale MC33880 high-side/low-side switch.
	  This provides GPIO interface supporting inputs and outputs.

config GPIO_74X164
	tristate "74x164 serial-in/parallel-out 8-bits shift register"
	depends on SPI_MASTER
	help
	  Platform driver for 74x164 compatible serial-in/parallel-out
	  8-outputs shift registers. This driver can be used to provide access
	  to more gpio outputs.

comment "AC97 GPIO expanders:"

config GPIO_UCB1400
	bool "Philips UCB1400 GPIO"
	depends on UCB1400_CORE
	help
	  This enables support for the Philips UCB1400 GPIO pins.
	  The UCB1400 is an AC97 audio codec.

	  To compile this driver as a module, choose M here: the
	  module will be called ucb1400_gpio.

comment "MODULbus GPIO expanders:"

config GPIO_JANZ_TTL
	tristate "Janz VMOD-TTL Digital IO Module"
	depends on MFD_JANZ_CMODIO
	help
	  This enables support for the Janz VMOD-TTL Digital IO module.
	  This driver provides support for driving the pins in output
	  mode only. Input mode is not supported.

endif
Commit	Line	Data
a9c5fff5	1	#
926b1e2c	2	# platform-neutral GPIO infrastructure and expanders
a9c5fff5 DB	3	#
a9c5fff5 DB	4
7444a72e	5	config ARCH_WANT_OPTIONAL_GPIOLIB
a9c5fff5	6	bool
7444a72e MB	7	help
	8	Select this config option from the architecture Kconfig, if
	9	it is possible to use gpiolib on the architecture, but let the
	10	user decide whether to actually build it or not.
	11	Select this instead of ARCH_REQUIRE_GPIOLIB, if your architecture does
	12	not depend on GPIOs being available, but rather let the user
	13	decide whether he needs it or not.
	14
	15	config ARCH_REQUIRE_GPIOLIB
	16	bool
	17	select GPIOLIB
a9c5fff5 DB	18	help
	19	Platforms select gpiolib if they use this infrastructure
	20	for all their GPIOs, usually starting with ones integrated
	21	into SOC processors.
7444a72e MB	22	Selecting this from the architecture code will cause the gpiolib
	23	code to always get built in.
	24
	25
	26
	27	menuconfig GPIOLIB
	28	bool "GPIO Support"
	29	depends on ARCH_WANT_OPTIONAL_GPIOLIB \|\| ARCH_REQUIRE_GPIOLIB
	30	select GENERIC_GPIO
	31	help
	32	This enables GPIO support through the generic GPIO library.
	33	You only need to enable this, if you also want to enable
	34	one or more of the GPIO expansion card drivers below.
	35
	36	If unsure, say N.
a9c5fff5	37
7444a72e	38	if GPIOLIB
a9c5fff5 DB	39
	40	config DEBUG_GPIO
	41	bool "Debug GPIO calls"
	42	depends on DEBUG_KERNEL
	43	help
	44	Say Y here to add some extra checks and diagnostics to GPIO calls.
692105b8 ML	45	These checks help ensure that GPIOs have been properly initialized
	46	before they are used, and that sleeping calls are not made from
	47	non-sleeping contexts. They can make bitbanged serial protocols
a9c5fff5 DB	48	slower. The diagnostics help catch the type of setup errors
	49	that are most common when setting up new platforms or boards.
	50
d8f388d8 DB	51	config GPIO_SYSFS
	52	bool "/sys/class/gpio/... (sysfs interface)"
	53	depends on SYSFS && EXPERIMENTAL
	54	help
	55	Say Y here to add a sysfs interface for GPIOs.
	56
	57	This is mostly useful to work around omissions in a system's
	58	kernel support. Those are common in custom and semicustom
	59	hardware assembled using standard kernels with a minimum of
	60	custom patches. In those cases, userspace code may import
	61	a given GPIO from the kernel, if no kernel driver requested it.
	62
	63	Kernel drivers may also request that a particular GPIO be
	64	exported to userspace; this can be useful when debugging.
	65
a9c5fff5 DB	66	# put expanders in the right section, in alphabetical order
a9c5fff5 DB	67
e952805d WS	68	config GPIO_MAX730X
	69	tristate
	70
0bcb6069 JL	71	comment "Memory mapped GPIO expanders:"
0bcb6069 JL	72
aeec56e3 AV	73	config GPIO_BASIC_MMIO
	74	tristate "Basic memory-mapped GPIO controllers support"
	75	help
	76	Say yes here to support basic memory-mapped GPIO controllers.
	77
9cc0cb3c DT	78	config GPIO_IT8761E
	79	tristate "IT8761E GPIO support"
	80	depends on GPIOLIB
	81	help
	82	Say yes here to support GPIO functionality of IT8761E super I/O chip.
	83
1e9c2859 BS	84	config GPIO_PL061
	85	bool "PrimeCell PL061 GPIO support"
	86	depends on ARM_AMBA
	87	help
	88	Say yes here to support the PrimeCell PL061 GPIO device
	89
0bcb6069 JL	90	config GPIO_XILINX
0bcb6069 JL	91	bool "Xilinx GPIO support"
6fa612b5	92	depends on PPC_OF \|\| MICROBLAZE
0bcb6069 JL	93	help
	94	Say yes here to support the Xilinx FPGA GPIO device
	95
27fdd325 YY	96	config GPIO_VR41XX
	97	tristate "NEC VR4100 series General-purpose I/O Uint support"
	98	depends on CPU_VR41XX
	99	help
	100	Say yes here to support the NEC VR4100 series General-purpose I/O Uint
	101
be9b06b2 DT	102	config GPIO_SCH
be9b06b2 DT	103	tristate "Intel SCH GPIO"
860fb8c1 RD	104	depends on GPIOLIB && PCI
860fb8c1 RD	105	select MFD_CORE
be9b06b2 DT	106	select LPC_SCH
	107	help
	108	Say yes here to support GPIO interface on Intel Poulsbo SCH.
	109	The Intel SCH contains a total of 14 GPIO pins. Ten GPIOs are
	110	powered by the core power rail and are turned off during sleep
	111	modes (S3 and higher). The remaining four GPIOs are powered by
	112	the Intel SCH suspend power supply. These GPIOs remain
	113	active during S3. The suspend powered GPIOs can be used to wake the
	114	system from the Suspend-to-RAM state.
	115
	116	This driver can also be built as a module. If so, the module
	117	will be called sch-gpio.
	118
a9c5fff5 DB	119	comment "I2C GPIO expanders:"
a9c5fff5 DB	120
e952805d WS	121	config GPIO_MAX7300
	122	tristate "Maxim MAX7300 GPIO expander"
	123	depends on I2C
	124	select GPIO_MAX730X
	125	help
	126	GPIO driver for Maxim MAX7301 I2C-based GPIO expander.
	127
bbcd6d54 EM	128	config GPIO_MAX732X
	129	tristate "MAX7319, MAX7320-7327 I2C Port Expanders"
	130	depends on I2C
	131	help
	132	Say yes here to support the MAX7319, MAX7320-7327 series of I2C
	133	Port Expanders. Each IO port on these chips has a fixed role of
	134	Input (designated by 'I'), Push-Pull Output ('O'), or Open-Drain
	135	Input and Output (designed by 'P'). The combinations are listed
	136	below:
	137
	138	8 bits: max7319 (8I), max7320 (8O), max7321 (8P),
	139	max7322 (4I4O), max7323 (4P4O)
	140
	141	16 bits: max7324 (8I8O), max7325 (8P8O),
	142	max7326 (4I12O), max7327 (4P12O)
	143
	144	Board setup code must specify the model to use, and the start
	145	number for these GPIOs.
	146
a80a0bbe MZ	147	config GPIO_MAX732X_IRQ
	148	bool "Interrupt controller support for MAX732x"
	149	depends on GPIO_MAX732X=y && GENERIC_HARDIRQS
	150	help
	151	Say yes here to enable the max732x to be used as an interrupt
	152	controller. It requires the driver to be built in the kernel.
	153
f3dc3630	154	config GPIO_PCA953X
ab5dc372	155	tristate "PCA953x, PCA955x, TCA64xx, and MAX7310 I/O ports"
9e60fdcf	156	depends on I2C
9e60fdcf	157	help
7059d4b0 DB	158	Say yes here to provide access to several register-oriented
	159	SMBus I/O expanders, made mostly by NXP or TI. Compatible
	160	models include:
	161
	162	4 bits: pca9536, pca9537
	163
ab5dc372 DB	164	8 bits: max7310, pca9534, pca9538, pca9554, pca9557,
ab5dc372 DB	165	tca6408
7059d4b0	166
ab5dc372	167	16 bits: pca9535, pca9539, pca9555, tca6416
9e60fdcf	168
9e60fdcf	169	This driver can also be built as a module. If so, the module
f3dc3630	170	will be called pca953x.
9e60fdcf	171
89ea8bbe MZ	172	config GPIO_PCA953X_IRQ
	173	bool "Interrupt controller support for PCA953x"
	174	depends on GPIO_PCA953X=y
	175	help
	176	Say yes here to enable the pca953x to be used as an interrupt
	177	controller. It requires the driver to be built in the kernel.
	178
15fae37d	179	config GPIO_PCF857X
1673ad52	180	tristate "PCF857x, PCA{85,96}7x, and MAX732[89] I2C GPIO expanders"
15fae37d DB	181	depends on I2C
	182	help
	183	Say yes here to provide access to most "quasi-bidirectional" I2C
	184	GPIO expanders used for additional digital outputs or inputs.
	185	Most of these parts are from NXP, though TI is a second source for
	186	some of them. Compatible models include:
	187
	188	8 bits: pcf8574, pcf8574a, pca8574, pca8574a,
1673ad52 DB	189	pca9670, pca9672, pca9674, pca9674a,
1673ad52 DB	190	max7328, max7329
15fae37d DB	191
	192	16 bits: pcf8575, pcf8575c, pca8575,
	193	pca9671, pca9673, pca9675
	194
	195	Your board setup code will need to declare the expanders in
	196	use, and assign numbers to the GPIOs they expose. Those GPIOs
	197	can then be used from drivers and other kernel code, just like
	198	other GPIOs, but only accessible from task contexts.
	199
	200	This driver provides an in-kernel interface to those GPIOs using
	201	platform-neutral GPIO calls.
	202
c34f16b7 GB	203	config GPIO_SX150X
	204	bool "Semtech SX150x I2C GPIO expander"
	205	depends on I2C=y
	206	default n
	207	help
	208	Say yes here to provide support for Semtech SX150-series I2C
	209	GPIO expanders. Compatible models include:
	210
	211	8 bits: sx1508q
	212	16 bits: sx1509q
	213
03f822f5 RV	214	config GPIO_STMPE
	215	bool "STMPE GPIOs"
	216	depends on MFD_STMPE
	217	help
	218	This enables support for the GPIOs found on the STMPE I/O
	219	Expanders.
	220
d88b25be RV	221	config GPIO_TC35892
	222	bool "TC35892 GPIOs"
	223	depends on MFD_TC35892
	224	help
	225	This enables support for the GPIOs found on the TC35892
	226	I/O Expander.
	227
e9d35947 DB	228	config GPIO_TWL4030
	229	tristate "TWL4030, TWL5030, and TPS659x0 GPIOs"
	230	depends on TWL4030_CORE
	231	help
	232	Say yes here to access the GPIO signals of various multi-function
	233	power management chips from Texas Instruments.
	234
e4b736f1 MB	235	config GPIO_WM831X
	236	tristate "WM831x GPIOs"
	237	depends on MFD_WM831X
	238	help
	239	Say yes here to access the GPIO signals of WM831x power management
	240	chips from Wolfson Microelectronics.
	241
38f6ce45 MB	242	config GPIO_WM8350
	243	tristate "WM8350 GPIOs"
	244	depends on MFD_WM8350
	245	help
	246	Say yes here to access the GPIO signals of WM8350 power management
	247	chips from Wolfson Microelectronics.
	248
2955c309 MB	249	config GPIO_WM8994
	250	tristate "WM8994 GPIOs"
	251	depends on MFD_WM8994
	252	help
	253	Say yes here to access the GPIO signals of WM8994 audio hub
	254	CODECs from Wolfson Microelectronics.
	255
ef72af40 MH	256	config GPIO_ADP5520
	257	tristate "GPIO Support for ADP5520 PMIC"
	258	depends on PMIC_ADP5520
	259	help
	260	This option enables support for on-chip GPIO found
	261	on Analog Devices ADP5520 PMICs.
	262
	263	To compile this driver as a module, choose M here: the module will
	264	be called adp5520-gpio.
	265
80884094 MH	266	config GPIO_ADP5588
	267	tristate "ADP5588 I2C GPIO expander"
	268	depends on I2C
	269	help
	270	This option enables support for 18 GPIOs found
	271	on Analog Devices ADP5588 GPIO Expanders.
	272	To compile this driver as a module, choose M here: the module will be
	273	called adp5588-gpio.
	274
459773ae MH	275	config GPIO_ADP5588_IRQ
	276	bool "Interrupt controller support for ADP5588"
	277	depends on GPIO_ADP5588=y
	278	help
	279	Say yes here to enable the adp5588 to be used as an interrupt
	280	controller. It requires the driver to be built in the kernel.
	281
ff1d5c2f MB	282	comment "PCI GPIO expanders:"
ff1d5c2f MB	283
5f0a96b0 AS	284	config GPIO_CS5535
5f0a96b0 AS	285	tristate "AMD CS5535/CS5536 GPIO support"
c95d1e53	286	depends on PCI && !CS5535_GPIO
5f0a96b0 AS	287	help
	288	The AMD CS5535 and CS5536 southbridges support 28 GPIO pins that
	289	can be used for quite a number of things. The CS5535/6 is found on
	290	AMD Geode and Lemote Yeeloong devices.
	291
	292	If unsure, say N.
	293
ff1d5c2f MB	294	config GPIO_BT8XX
	295	tristate "BT8XX GPIO abuser"
	296	depends on PCI && VIDEO_BT848=n
	297	help
	298	The BT8xx frame grabber chip has 24 GPIO pins than can be abused
	299	as a cheap PCI GPIO card.
	300
	301	This chip can be found on Miro, Hauppauge and STB TV-cards.
	302
	303	The card needs to be physically altered for using it as a
	304	GPIO card. For more information on how to build a GPIO card
	305	from a BT8xx TV card, see the documentation file at
	306	Documentation/bt8xxgpio.txt
	307
	308	If unsure, say N.
	309
8bf02617	310	config GPIO_LANGWELL
8081c84c	311	bool "Intel Langwell/Penwell GPIO support"
8bf02617 AD	312	depends on PCI
8bf02617 AD	313	help
8081c84c	314	Say Y here to support Intel Langwell/Penwell GPIO.
8bf02617	315
35570ac6 RR	316	config GPIO_TIMBERDALE
	317	bool "Support for timberdale GPIO IP"
	318	depends on MFD_TIMBERDALE && GPIOLIB && HAS_IOMEM
	319	---help---
	320	Add support for the GPIO IP in the timberdale FPGA.
	321
9956d02d FF	322	config GPIO_RDC321X
	323	tristate "RDC R-321x GPIO support"
	324	depends on PCI && GPIOLIB
e4be3cb7	325	select MFD_CORE
9956d02d FF	326	select MFD_RDC321X
	327	help
	328	Support for the RDC R321x SoC GPIOs over southbridge
	329	PCI configuration space.
	330
a9c5fff5 DB	331	comment "SPI GPIO expanders:"
a9c5fff5 DB	332
0c36ec31 JB	333	config GPIO_MAX7301
	334	tristate "Maxim MAX7301 GPIO expander"
	335	depends on SPI_MASTER
e952805d	336	select GPIO_MAX730X
0c36ec31	337	help
e952805d	338	GPIO driver for Maxim MAX7301 SPI-based GPIO expander.
0c36ec31	339
e58b9e27 DB	340	config GPIO_MCP23S08
	341	tristate "Microchip MCP23S08 I/O expander"
	342	depends on SPI_MASTER
	343	help
	344	SPI driver for Microchip MCP23S08 I/O expander. This provides
	345	a GPIO interface supporting inputs and outputs.
	346
1e5db006 RR	347	config GPIO_MC33880
	348	tristate "Freescale MC33880 high-side/low-side switch"
	349	depends on SPI_MASTER
	350	help
	351	SPI driver for Freescale MC33880 high-side/low-side switch.
	352	This provides GPIO interface supporting inputs and outputs.
	353
ead6db08 MG	354	config GPIO_74X164
	355	tristate "74x164 serial-in/parallel-out 8-bits shift register"
	356	depends on SPI_MASTER
	357	help
	358	Platform driver for 74x164 compatible serial-in/parallel-out
	359	8-outputs shift registers. This driver can be used to provide access
	360	to more gpio outputs.
	361
4cf8e53b MV	362	comment "AC97 GPIO expanders:"
	363
	364	config GPIO_UCB1400
	365	bool "Philips UCB1400 GPIO"
	366	depends on UCB1400_CORE
	367	help
	368	This enables support for the Philips UCB1400 GPIO pins.
	369	The UCB1400 is an AC97 audio codec.
	370
	371	To compile this driver as a module, choose M here: the
	372	module will be called ucb1400_gpio.
	373
800e69fb IS	374	comment "MODULbus GPIO expanders:"
	375
	376	config GPIO_JANZ_TTL
	377	tristate "Janz VMOD-TTL Digital IO Module"
	378	depends on MFD_JANZ_CMODIO
	379	help
	380	This enables support for the Janz VMOD-TTL Digital IO module.
	381	This driver provides support for driving the pins in output
	382	mode only. Input mode is not supported.
	383
7444a72e	384	endif