[mirror_ubuntu-artful-kernel.git] / drivers / spi / Kconfig

#
# SPI driver configuration
#
# NOTE:  the reason this doesn't show SPI slave support is mostly that
# nobody's needed a slave side API yet.  The master-role API is not
# fully appropriate there, so it'd need some thought to do well.
#
menu "SPI support"
	depends on HAS_IOMEM

config SPI
	bool "SPI support"
	help
	  The "Serial Peripheral Interface" is a low level synchronous
	  protocol.  Chips that support SPI can have data transfer rates
	  up to several tens of Mbit/sec.  Chips are addressed with a
	  controller and a chipselect.  Most SPI slaves don't support
	  dynamic device discovery; some are even write-only or read-only.

	  SPI is widely used by microcontrollers to talk with sensors,
	  eeprom and flash memory, codecs and various other controller
	  chips, analog to digital (and d-to-a) converters, and more.
	  MMC and SD cards can be accessed using SPI protocol; and for
	  DataFlash cards used in MMC sockets, SPI must always be used.

	  SPI is one of a family of similar protocols using a four wire
	  interface (select, clock, data in, data out) including Microwire
	  (half duplex), SSP, SSI, and PSP.  This driver framework should
	  work with most such devices and controllers.

config SPI_DEBUG
	boolean "Debug support for SPI drivers"
	depends on SPI && DEBUG_KERNEL
	help
	  Say "yes" to enable debug messaging (like dev_dbg and pr_debug),
	  sysfs, and debugfs support in SPI controller and protocol drivers.

#
# MASTER side ... talking to discrete SPI slave chips including microcontrollers
#

config SPI_MASTER
#	boolean "SPI Master Support"
	boolean
	default SPI
	help
	  If your system has an master-capable SPI controller (which
	  provides the clock and chipselect), you can enable that
	  controller and the protocol drivers for the SPI slave chips
	  that are connected.

comment "SPI Master Controller Drivers"
	depends on SPI_MASTER

config SPI_ATMEL
	tristate "Atmel SPI Controller"
	depends on (ARCH_AT91 || AVR32) && SPI_MASTER
	help
	  This selects a driver for the Atmel SPI Controller, present on
	  many AT32 (AVR32) and AT91 (ARM) chips.

config SPI_BFIN
	tristate "SPI controller driver for ADI Blackfin5xx"
	depends on SPI_MASTER && BFIN
	help
	  This is the SPI controller master driver for Blackfin 5xx processor.

config SPI_AU1550
	tristate "Au1550/Au12x0 SPI Controller"
	depends on SPI_MASTER && (SOC_AU1550 || SOC_AU1200) && EXPERIMENTAL
	select SPI_BITBANG
	help
	  If you say yes to this option, support will be included for the
	  Au1550 SPI controller (may also work with Au1200,Au1210,Au1250).

	  This driver can also be built as a module.  If so, the module
	  will be called au1550_spi.

config SPI_BITBANG
	tristate "Bitbanging SPI master"
	depends on SPI_MASTER && EXPERIMENTAL
	help
	  With a few GPIO pins, your system can bitbang the SPI protocol.
	  Select this to get SPI support through I/O pins (GPIO, parallel
	  port, etc).  Or, some systems' SPI master controller drivers use
	  this code to manage the per-word or per-transfer accesses to the
	  hardware shift registers.

	  This is library code, and is automatically selected by drivers that
	  need it.  You only need to select this explicitly to support driver
	  modules that aren't part of this kernel tree.

config SPI_BUTTERFLY
	tristate "Parallel port adapter for AVR Butterfly (DEVELOPMENT)"
	depends on SPI_MASTER && PARPORT && EXPERIMENTAL
	select SPI_BITBANG
	help
	  This uses a custom parallel port cable to connect to an AVR
	  Butterfly <http://www.atmel.com/products/avr/butterfly>, an
	  inexpensive battery powered microcontroller evaluation board.
	  This same cable can be used to flash new firmware.

config SPI_IMX
	tristate "Freescale iMX SPI controller"
	depends on SPI_MASTER && ARCH_IMX && EXPERIMENTAL
	help
	  This enables using the Freescale iMX SPI controller in master
	  mode.

config SPI_LM70_LLP
	tristate "Parallel port adapter for LM70 eval board (DEVELOPMENT)"
	depends on SPI_MASTER && PARPORT && EXPERIMENTAL
	select SPI_BITBANG
	help
	  This driver supports the NS LM70 LLP Evaluation Board,
	  which interfaces to an LM70 temperature sensor using
	  a parallel port.

config SPI_MPC52xx_PSC
	tristate "Freescale MPC52xx PSC SPI controller"
	depends on SPI_MASTER && PPC_MPC52xx && EXPERIMENTAL
	help
	  This enables using the Freescale MPC52xx Programmable Serial
	  Controller in master SPI mode.

config SPI_MPC83xx
	tristate "Freescale MPC83xx SPI controller"
	depends on SPI_MASTER && PPC_83xx && EXPERIMENTAL
	select SPI_BITBANG
	help
	  This enables using the Freescale MPC83xx SPI controller in master
	  mode.

	  Note, this driver uniquely supports the SPI controller on the MPC83xx
	  family of PowerPC processors.  The MPC83xx uses a simple set of shift
	  registers for data (opposed to the CPM based descriptor model).

config SPI_OMAP_UWIRE
	tristate "OMAP1 MicroWire"
	depends on SPI_MASTER && ARCH_OMAP1
	select SPI_BITBANG
	help
	  This hooks up to the MicroWire controller on OMAP1 chips.


config SPI_PXA2XX
	tristate "PXA2xx SSP SPI master"
	depends on SPI_MASTER && ARCH_PXA && EXPERIMENTAL
	help
	  This enables using a PXA2xx SSP port as a SPI master controller.
	  The driver can be configured to use any SSP port and additional
	  documentation can be found a Documentation/spi/pxa2xx.

config SPI_S3C24XX
	tristate "Samsung S3C24XX series SPI"
	depends on SPI_MASTER && ARCH_S3C2410 && EXPERIMENTAL
	help
	  SPI driver for Samsung S3C24XX series ARM SoCs

config SPI_S3C24XX_GPIO
	tristate "Samsung S3C24XX series SPI by GPIO"
	depends on SPI_MASTER && ARCH_S3C2410 && SPI_BITBANG && EXPERIMENTAL
	help
	  SPI driver for Samsung S3C24XX series ARM SoCs using
	  GPIO lines to provide the SPI bus. This can be used where
	  the inbuilt hardware cannot provide the transfer mode, or
	  where the board is using non hardware connected pins.
#
# Add new SPI master controllers in alphabetical order above this line
#

#
# There are lots of SPI device types, with sensors and memory
# being probably the most widely used ones.
#
comment "SPI Protocol Masters"
	depends on SPI_MASTER

config SPI_AT25
	tristate "SPI EEPROMs from most vendors"
	depends on SPI_MASTER && SYSFS
	help
	  Enable this driver to get read/write support to most SPI EEPROMs,
	  after you configure the board init code to know about each eeprom
	  on your target board.

	  This driver can also be built as a module.  If so, the module
	  will be called at25.

config SPI_SPIDEV
	tristate "User mode SPI device driver support"
	depends on SPI_MASTER && EXPERIMENTAL
	help
	  This supports user mode SPI protocol drivers.

	  Note that this application programming interface is EXPERIMENTAL
	  and hence SUBJECT TO CHANGE WITHOUT NOTICE while it stabilizes.

#
# Add new SPI protocol masters in alphabetical order above this line
#

# (slave support would go here)

endmenu # "SPI support"
Commit	Line	Data
8ae12a0d DB	1	#
	2	# SPI driver configuration
	3	#
	4	# NOTE: the reason this doesn't show SPI slave support is mostly that
	5	# nobody's needed a slave side API yet. The master-role API is not
	6	# fully appropriate there, so it'd need some thought to do well.
	7	#
	8	menu "SPI support"
e25df120	9	depends on HAS_IOMEM
8ae12a0d DB	10
	11	config SPI
	12	bool "SPI support"
	13	help
	14	The "Serial Peripheral Interface" is a low level synchronous
	15	protocol. Chips that support SPI can have data transfer rates
	16	up to several tens of Mbit/sec. Chips are addressed with a
	17	controller and a chipselect. Most SPI slaves don't support
	18	dynamic device discovery; some are even write-only or read-only.
	19
3cb2fccc	20	SPI is widely used by microcontrollers to talk with sensors,
8ae12a0d DB	21	eeprom and flash memory, codecs and various other controller
	22	chips, analog to digital (and d-to-a) converters, and more.
	23	MMC and SD cards can be accessed using SPI protocol; and for
	24	DataFlash cards used in MMC sockets, SPI must always be used.
	25
	26	SPI is one of a family of similar protocols using a four wire
	27	interface (select, clock, data in, data out) including Microwire
	28	(half duplex), SSP, SSI, and PSP. This driver framework should
	29	work with most such devices and controllers.
	30
	31	config SPI_DEBUG
	32	boolean "Debug support for SPI drivers"
	33	depends on SPI && DEBUG_KERNEL
	34	help
	35	Say "yes" to enable debug messaging (like dev_dbg and pr_debug),
	36	sysfs, and debugfs support in SPI controller and protocol drivers.
	37
	38	#
	39	# MASTER side ... talking to discrete SPI slave chips including microcontrollers
	40	#
	41
	42	config SPI_MASTER
	43	# boolean "SPI Master Support"
	44	boolean
	45	default SPI
	46	help
	47	If your system has an master-capable SPI controller (which
	48	provides the clock and chipselect), you can enable that
	49	controller and the protocol drivers for the SPI slave chips
	50	that are connected.
	51
	52	comment "SPI Master Controller Drivers"
	53	depends on SPI_MASTER
	54
754ce4f2 HS	55	config SPI_ATMEL
	56	tristate "Atmel SPI Controller"
	57	depends on (ARCH_AT91 \|\| AVR32) && SPI_MASTER
	58	help
	59	This selects a driver for the Atmel SPI Controller, present on
	60	many AT32 (AVR32) and AT91 (ARM) chips.
	61
a5f6abd4 WB	62	config SPI_BFIN
	63	tristate "SPI controller driver for ADI Blackfin5xx"
	64	depends on SPI_MASTER && BFIN
	65	help
	66	This is the SPI controller master driver for Blackfin 5xx processor.
	67
63bd2359 JN	68	config SPI_AU1550
	69	tristate "Au1550/Au12x0 SPI Controller"
	70	depends on SPI_MASTER && (SOC_AU1550 \|\| SOC_AU1200) && EXPERIMENTAL
	71	select SPI_BITBANG
	72	help
	73	If you say yes to this option, support will be included for the
	74	Au1550 SPI controller (may also work with Au1200,Au1210,Au1250).
	75
	76	This driver can also be built as a module. If so, the module
	77	will be called au1550_spi.
	78
9904f22a DB	79	config SPI_BITBANG
	80	tristate "Bitbanging SPI master"
	81	depends on SPI_MASTER && EXPERIMENTAL
	82	help
	83	With a few GPIO pins, your system can bitbang the SPI protocol.
	84	Select this to get SPI support through I/O pins (GPIO, parallel
	85	port, etc). Or, some systems' SPI master controller drivers use
	86	this code to manage the per-word or per-transfer accesses to the
	87	hardware shift registers.
	88
	89	This is library code, and is automatically selected by drivers that
	90	need it. You only need to select this explicitly to support driver
	91	modules that aren't part of this kernel tree.
8ae12a0d	92
7111763d DB	93	config SPI_BUTTERFLY
	94	tristate "Parallel port adapter for AVR Butterfly (DEVELOPMENT)"
	95	depends on SPI_MASTER && PARPORT && EXPERIMENTAL
	96	select SPI_BITBANG
	97	help
	98	This uses a custom parallel port cable to connect to an AVR
	99	Butterfly <http://www.atmel.com/products/avr/butterfly>, an
	100	inexpensive battery powered microcontroller evaluation board.
	101	This same cable can be used to flash new firmware.
	102
69c202af AP	103	config SPI_IMX
	104	tristate "Freescale iMX SPI controller"
	105	depends on SPI_MASTER && ARCH_IMX && EXPERIMENTAL
	106	help
	107	This enables using the Freescale iMX SPI controller in master
	108	mode.
	109
78961a57 KB	110	config SPI_LM70_LLP
	111	tristate "Parallel port adapter for LM70 eval board (DEVELOPMENT)"
	112	depends on SPI_MASTER && PARPORT && EXPERIMENTAL
	113	select SPI_BITBANG
	114	help
	115	This driver supports the NS LM70 LLP Evaluation Board,
	116	which interfaces to an LM70 temperature sensor using
	117	a parallel port.
	118
00b8fd23 DC	119	config SPI_MPC52xx_PSC
	120	tristate "Freescale MPC52xx PSC SPI controller"
	121	depends on SPI_MASTER && PPC_MPC52xx && EXPERIMENTAL
	122	help
	123	This enables using the Freescale MPC52xx Programmable Serial
	124	Controller in master SPI mode.
	125
ccf06998 KG	126	config SPI_MPC83xx
	127	tristate "Freescale MPC83xx SPI controller"
	128	depends on SPI_MASTER && PPC_83xx && EXPERIMENTAL
	129	select SPI_BITBANG
	130	help
	131	This enables using the Freescale MPC83xx SPI controller in master
	132	mode.
	133
	134	Note, this driver uniquely supports the SPI controller on the MPC83xx
	135	family of PowerPC processors. The MPC83xx uses a simple set of shift
	136	registers for data (opposed to the CPM based descriptor model).
	137
fdb3c18d DB	138	config SPI_OMAP_UWIRE
	139	tristate "OMAP1 MicroWire"
	140	depends on SPI_MASTER && ARCH_OMAP1
	141	select SPI_BITBANG
	142	help
	143	This hooks up to the MicroWire controller on OMAP1 chips.
	144
69c202af	145
e0c9905e SS	146	config SPI_PXA2XX
	147	tristate "PXA2xx SSP SPI master"
	148	depends on SPI_MASTER && ARCH_PXA && EXPERIMENTAL
	149	help
	150	This enables using a PXA2xx SSP port as a SPI master controller.
	151	The driver can be configured to use any SSP port and additional
	152	documentation can be found a Documentation/spi/pxa2xx.
	153
85abfaa7 DB	154	config SPI_S3C24XX
	155	tristate "Samsung S3C24XX series SPI"
	156	depends on SPI_MASTER && ARCH_S3C2410 && EXPERIMENTAL
	157	help
	158	SPI driver for Samsung S3C24XX series ARM SoCs
	159
1fc7547d BD	160	config SPI_S3C24XX_GPIO
	161	tristate "Samsung S3C24XX series SPI by GPIO"
	162	depends on SPI_MASTER && ARCH_S3C2410 && SPI_BITBANG && EXPERIMENTAL
	163	help
	164	SPI driver for Samsung S3C24XX series ARM SoCs using
	165	GPIO lines to provide the SPI bus. This can be used where
	166	the inbuilt hardware cannot provide the transfer mode, or
	167	where the board is using non hardware connected pins.
8ae12a0d DB	168	#
	169	# Add new SPI master controllers in alphabetical order above this line
	170	#
	171
8ae12a0d DB	172	#
	173	# There are lots of SPI device types, with sensors and memory
	174	# being probably the most widely used ones.
	175	#
	176	comment "SPI Protocol Masters"
	177	depends on SPI_MASTER
	178
b587b13a DB	179	config SPI_AT25
	180	tristate "SPI EEPROMs from most vendors"
	181	depends on SPI_MASTER && SYSFS
	182	help
	183	Enable this driver to get read/write support to most SPI EEPROMs,
	184	after you configure the board init code to know about each eeprom
	185	on your target board.
	186
	187	This driver can also be built as a module. If so, the module
	188	will be called at25.
8ae12a0d	189
814a8d50 AP	190	config SPI_SPIDEV
	191	tristate "User mode SPI device driver support"
	192	depends on SPI_MASTER && EXPERIMENTAL
	193	help
	194	This supports user mode SPI protocol drivers.
	195
	196	Note that this application programming interface is EXPERIMENTAL
	197	and hence SUBJECT TO CHANGE WITHOUT NOTICE while it stabilizes.
	198
8ae12a0d DB	199	#
	200	# Add new SPI protocol masters in alphabetical order above this line
	201	#
	202
8ae12a0d DB	203	# (slave support would go here)
	204
	205	endmenu # "SPI support"
	206