[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_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.

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.

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
9cc0cb3c DT	73	config GPIO_IT8761E
	74	tristate "IT8761E GPIO support"
	75	depends on GPIOLIB
	76	help
	77	Say yes here to support GPIO functionality of IT8761E super I/O chip.
	78
1e9c2859 BS	79	config GPIO_PL061
	80	bool "PrimeCell PL061 GPIO support"
	81	depends on ARM_AMBA
	82	help
	83	Say yes here to support the PrimeCell PL061 GPIO device
	84
0bcb6069 JL	85	config GPIO_XILINX
0bcb6069 JL	86	bool "Xilinx GPIO support"
6fa612b5	87	depends on PPC_OF \|\| MICROBLAZE
0bcb6069 JL	88	help
	89	Say yes here to support the Xilinx FPGA GPIO device
	90
27fdd325 YY	91	config GPIO_VR41XX
	92	tristate "NEC VR4100 series General-purpose I/O Uint support"
	93	depends on CPU_VR41XX
	94	help
	95	Say yes here to support the NEC VR4100 series General-purpose I/O Uint
	96
be9b06b2 DT	97	config GPIO_SCH
be9b06b2 DT	98	tristate "Intel SCH GPIO"
860fb8c1 RD	99	depends on GPIOLIB && PCI
860fb8c1 RD	100	select MFD_CORE
be9b06b2 DT	101	select LPC_SCH
	102	help
	103	Say yes here to support GPIO interface on Intel Poulsbo SCH.
	104	The Intel SCH contains a total of 14 GPIO pins. Ten GPIOs are
	105	powered by the core power rail and are turned off during sleep
	106	modes (S3 and higher). The remaining four GPIOs are powered by
	107	the Intel SCH suspend power supply. These GPIOs remain
	108	active during S3. The suspend powered GPIOs can be used to wake the
	109	system from the Suspend-to-RAM state.
	110
	111	This driver can also be built as a module. If so, the module
	112	will be called sch-gpio.
	113
a9c5fff5 DB	114	comment "I2C GPIO expanders:"
a9c5fff5 DB	115
e952805d WS	116	config GPIO_MAX7300
	117	tristate "Maxim MAX7300 GPIO expander"
	118	depends on I2C
	119	select GPIO_MAX730X
	120	help
	121	GPIO driver for Maxim MAX7301 I2C-based GPIO expander.
	122
bbcd6d54 EM	123	config GPIO_MAX732X
	124	tristate "MAX7319, MAX7320-7327 I2C Port Expanders"
	125	depends on I2C
	126	help
	127	Say yes here to support the MAX7319, MAX7320-7327 series of I2C
	128	Port Expanders. Each IO port on these chips has a fixed role of
	129	Input (designated by 'I'), Push-Pull Output ('O'), or Open-Drain
	130	Input and Output (designed by 'P'). The combinations are listed
	131	below:
	132
	133	8 bits: max7319 (8I), max7320 (8O), max7321 (8P),
	134	max7322 (4I4O), max7323 (4P4O)
	135
	136	16 bits: max7324 (8I8O), max7325 (8P8O),
	137	max7326 (4I12O), max7327 (4P12O)
	138
	139	Board setup code must specify the model to use, and the start
	140	number for these GPIOs.
	141
a80a0bbe MZ	142	config GPIO_MAX732X_IRQ
	143	bool "Interrupt controller support for MAX732x"
	144	depends on GPIO_MAX732X=y && GENERIC_HARDIRQS
	145	help
	146	Say yes here to enable the max732x to be used as an interrupt
	147	controller. It requires the driver to be built in the kernel.
	148
f3dc3630	149	config GPIO_PCA953X
ab5dc372	150	tristate "PCA953x, PCA955x, TCA64xx, and MAX7310 I/O ports"
9e60fdcf	151	depends on I2C
9e60fdcf	152	help
7059d4b0 DB	153	Say yes here to provide access to several register-oriented
	154	SMBus I/O expanders, made mostly by NXP or TI. Compatible
	155	models include:
	156
	157	4 bits: pca9536, pca9537
	158
ab5dc372 DB	159	8 bits: max7310, pca9534, pca9538, pca9554, pca9557,
ab5dc372 DB	160	tca6408
7059d4b0	161
ab5dc372	162	16 bits: pca9535, pca9539, pca9555, tca6416
9e60fdcf	163
9e60fdcf	164	This driver can also be built as a module. If so, the module
f3dc3630	165	will be called pca953x.
9e60fdcf	166
89ea8bbe MZ	167	config GPIO_PCA953X_IRQ
	168	bool "Interrupt controller support for PCA953x"
	169	depends on GPIO_PCA953X=y
	170	help
	171	Say yes here to enable the pca953x to be used as an interrupt
	172	controller. It requires the driver to be built in the kernel.
	173
15fae37d	174	config GPIO_PCF857X
1673ad52	175	tristate "PCF857x, PCA{85,96}7x, and MAX732[89] I2C GPIO expanders"
15fae37d DB	176	depends on I2C
	177	help
	178	Say yes here to provide access to most "quasi-bidirectional" I2C
	179	GPIO expanders used for additional digital outputs or inputs.
	180	Most of these parts are from NXP, though TI is a second source for
	181	some of them. Compatible models include:
	182
	183	8 bits: pcf8574, pcf8574a, pca8574, pca8574a,
1673ad52 DB	184	pca9670, pca9672, pca9674, pca9674a,
1673ad52 DB	185	max7328, max7329
15fae37d DB	186
	187	16 bits: pcf8575, pcf8575c, pca8575,
	188	pca9671, pca9673, pca9675
	189
	190	Your board setup code will need to declare the expanders in
	191	use, and assign numbers to the GPIOs they expose. Those GPIOs
	192	can then be used from drivers and other kernel code, just like
	193	other GPIOs, but only accessible from task contexts.
	194
	195	This driver provides an in-kernel interface to those GPIOs using
	196	platform-neutral GPIO calls.
	197
c34f16b7 GB	198	config GPIO_SX150X
	199	bool "Semtech SX150x I2C GPIO expander"
	200	depends on I2C=y
	201	default n
	202	help
	203	Say yes here to provide support for Semtech SX150-series I2C
	204	GPIO expanders. Compatible models include:
	205
	206	8 bits: sx1508q
	207	16 bits: sx1509q
	208
03f822f5 RV	209	config GPIO_STMPE
	210	bool "STMPE GPIOs"
	211	depends on MFD_STMPE
	212	help
	213	This enables support for the GPIOs found on the STMPE I/O
	214	Expanders.
	215
d88b25be RV	216	config GPIO_TC35892
	217	bool "TC35892 GPIOs"
	218	depends on MFD_TC35892
	219	help
	220	This enables support for the GPIOs found on the TC35892
	221	I/O Expander.
	222
e9d35947 DB	223	config GPIO_TWL4030
	224	tristate "TWL4030, TWL5030, and TPS659x0 GPIOs"
	225	depends on TWL4030_CORE
	226	help
	227	Say yes here to access the GPIO signals of various multi-function
	228	power management chips from Texas Instruments.
	229
e4b736f1 MB	230	config GPIO_WM831X
	231	tristate "WM831x GPIOs"
	232	depends on MFD_WM831X
	233	help
	234	Say yes here to access the GPIO signals of WM831x power management
	235	chips from Wolfson Microelectronics.
	236
38f6ce45 MB	237	config GPIO_WM8350
	238	tristate "WM8350 GPIOs"
	239	depends on MFD_WM8350
	240	help
	241	Say yes here to access the GPIO signals of WM8350 power management
	242	chips from Wolfson Microelectronics.
	243
2955c309 MB	244	config GPIO_WM8994
	245	tristate "WM8994 GPIOs"
	246	depends on MFD_WM8994
	247	help
	248	Say yes here to access the GPIO signals of WM8994 audio hub
	249	CODECs from Wolfson Microelectronics.
	250
ef72af40 MH	251	config GPIO_ADP5520
	252	tristate "GPIO Support for ADP5520 PMIC"
	253	depends on PMIC_ADP5520
	254	help
	255	This option enables support for on-chip GPIO found
	256	on Analog Devices ADP5520 PMICs.
	257
	258	To compile this driver as a module, choose M here: the module will
	259	be called adp5520-gpio.
	260
80884094 MH	261	config GPIO_ADP5588
	262	tristate "ADP5588 I2C GPIO expander"
	263	depends on I2C
	264	help
	265	This option enables support for 18 GPIOs found
	266	on Analog Devices ADP5588 GPIO Expanders.
	267	To compile this driver as a module, choose M here: the module will be
	268	called adp5588-gpio.
	269
ff1d5c2f MB	270	comment "PCI GPIO expanders:"
ff1d5c2f MB	271
5f0a96b0 AS	272	config GPIO_CS5535
5f0a96b0 AS	273	tristate "AMD CS5535/CS5536 GPIO support"
c95d1e53	274	depends on PCI && !CS5535_GPIO
5f0a96b0 AS	275	help
	276	The AMD CS5535 and CS5536 southbridges support 28 GPIO pins that
	277	can be used for quite a number of things. The CS5535/6 is found on
	278	AMD Geode and Lemote Yeeloong devices.
	279
	280	If unsure, say N.
	281
ff1d5c2f MB	282	config GPIO_BT8XX
	283	tristate "BT8XX GPIO abuser"
	284	depends on PCI && VIDEO_BT848=n
	285	help
	286	The BT8xx frame grabber chip has 24 GPIO pins than can be abused
	287	as a cheap PCI GPIO card.
	288
	289	This chip can be found on Miro, Hauppauge and STB TV-cards.
	290
	291	The card needs to be physically altered for using it as a
	292	GPIO card. For more information on how to build a GPIO card
	293	from a BT8xx TV card, see the documentation file at
	294	Documentation/bt8xxgpio.txt
	295
	296	If unsure, say N.
	297
8bf02617	298	config GPIO_LANGWELL
8081c84c	299	bool "Intel Langwell/Penwell GPIO support"
8bf02617 AD	300	depends on PCI
8bf02617 AD	301	help
8081c84c	302	Say Y here to support Intel Langwell/Penwell GPIO.
8bf02617	303
35570ac6 RR	304	config GPIO_TIMBERDALE
	305	bool "Support for timberdale GPIO IP"
	306	depends on MFD_TIMBERDALE && GPIOLIB && HAS_IOMEM
	307	---help---
	308	Add support for the GPIO IP in the timberdale FPGA.
	309
9956d02d FF	310	config GPIO_RDC321X
	311	tristate "RDC R-321x GPIO support"
	312	depends on PCI && GPIOLIB
e4be3cb7	313	select MFD_CORE
9956d02d FF	314	select MFD_RDC321X
	315	help
	316	Support for the RDC R321x SoC GPIOs over southbridge
	317	PCI configuration space.
	318
a9c5fff5 DB	319	comment "SPI GPIO expanders:"
a9c5fff5 DB	320
0c36ec31 JB	321	config GPIO_MAX7301
	322	tristate "Maxim MAX7301 GPIO expander"
	323	depends on SPI_MASTER
e952805d	324	select GPIO_MAX730X
0c36ec31	325	help
e952805d	326	GPIO driver for Maxim MAX7301 SPI-based GPIO expander.
0c36ec31	327
e58b9e27 DB	328	config GPIO_MCP23S08
	329	tristate "Microchip MCP23S08 I/O expander"
	330	depends on SPI_MASTER
	331	help
	332	SPI driver for Microchip MCP23S08 I/O expander. This provides
	333	a GPIO interface supporting inputs and outputs.
	334
1e5db006 RR	335	config GPIO_MC33880
	336	tristate "Freescale MC33880 high-side/low-side switch"
	337	depends on SPI_MASTER
	338	help
	339	SPI driver for Freescale MC33880 high-side/low-side switch.
	340	This provides GPIO interface supporting inputs and outputs.
	341
4cf8e53b MV	342	comment "AC97 GPIO expanders:"
	343
	344	config GPIO_UCB1400
	345	bool "Philips UCB1400 GPIO"
	346	depends on UCB1400_CORE
	347	help
	348	This enables support for the Philips UCB1400 GPIO pins.
	349	The UCB1400 is an AC97 audio codec.
	350
	351	To compile this driver as a module, choose M here: the
	352	module will be called ucb1400_gpio.
	353
800e69fb IS	354	comment "MODULbus GPIO expanders:"
	355
	356	config GPIO_JANZ_TTL
	357	tristate "Janz VMOD-TTL Digital IO Module"
	358	depends on MFD_JANZ_CMODIO
	359	help
	360	This enables support for the Janz VMOD-TTL Digital IO module.
	361	This driver provides support for driving the pins in output
	362	mode only. Input mode is not supported.
	363
7444a72e	364	endif