[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"

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_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_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_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_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
#


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

#
# 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


#
# 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"
	9
	10	config SPI
	11	bool "SPI support"
	12	help
	13	The "Serial Peripheral Interface" is a low level synchronous
	14	protocol. Chips that support SPI can have data transfer rates
	15	up to several tens of Mbit/sec. Chips are addressed with a
	16	controller and a chipselect. Most SPI slaves don't support
	17	dynamic device discovery; some are even write-only or read-only.
	18
3cb2fccc	19	SPI is widely used by microcontrollers to talk with sensors,
8ae12a0d DB	20	eeprom and flash memory, codecs and various other controller
	21	chips, analog to digital (and d-to-a) converters, and more.
	22	MMC and SD cards can be accessed using SPI protocol; and for
	23	DataFlash cards used in MMC sockets, SPI must always be used.
	24
	25	SPI is one of a family of similar protocols using a four wire
	26	interface (select, clock, data in, data out) including Microwire
	27	(half duplex), SSP, SSI, and PSP. This driver framework should
	28	work with most such devices and controllers.
	29
	30	config SPI_DEBUG
	31	boolean "Debug support for SPI drivers"
	32	depends on SPI && DEBUG_KERNEL
	33	help
	34	Say "yes" to enable debug messaging (like dev_dbg and pr_debug),
	35	sysfs, and debugfs support in SPI controller and protocol drivers.
	36
	37	#
	38	# MASTER side ... talking to discrete SPI slave chips including microcontrollers
	39	#
	40
	41	config SPI_MASTER
	42	# boolean "SPI Master Support"
	43	boolean
	44	default SPI
	45	help
	46	If your system has an master-capable SPI controller (which
	47	provides the clock and chipselect), you can enable that
	48	controller and the protocol drivers for the SPI slave chips
	49	that are connected.
	50
	51	comment "SPI Master Controller Drivers"
	52	depends on SPI_MASTER
	53
9904f22a DB	54	config SPI_BITBANG
	55	tristate "Bitbanging SPI master"
	56	depends on SPI_MASTER && EXPERIMENTAL
	57	help
	58	With a few GPIO pins, your system can bitbang the SPI protocol.
	59	Select this to get SPI support through I/O pins (GPIO, parallel
	60	port, etc). Or, some systems' SPI master controller drivers use
	61	this code to manage the per-word or per-transfer accesses to the
	62	hardware shift registers.
	63
	64	This is library code, and is automatically selected by drivers that
	65	need it. You only need to select this explicitly to support driver
	66	modules that aren't part of this kernel tree.
8ae12a0d	67
7111763d DB	68	config SPI_BUTTERFLY
	69	tristate "Parallel port adapter for AVR Butterfly (DEVELOPMENT)"
	70	depends on SPI_MASTER && PARPORT && EXPERIMENTAL
	71	select SPI_BITBANG
	72	help
	73	This uses a custom parallel port cable to connect to an AVR
	74	Butterfly <http://www.atmel.com/products/avr/butterfly>, an
	75	inexpensive battery powered microcontroller evaluation board.
	76	This same cable can be used to flash new firmware.
	77
ccf06998 KG	78	config SPI_MPC83xx
	79	tristate "Freescale MPC83xx SPI controller"
	80	depends on SPI_MASTER && PPC_83xx && EXPERIMENTAL
	81	select SPI_BITBANG
	82	help
	83	This enables using the Freescale MPC83xx SPI controller in master
	84	mode.
	85
	86	Note, this driver uniquely supports the SPI controller on the MPC83xx
	87	family of PowerPC processors. The MPC83xx uses a simple set of shift
	88	registers for data (opposed to the CPM based descriptor model).
	89
e0c9905e SS	90	config SPI_PXA2XX
	91	tristate "PXA2xx SSP SPI master"
	92	depends on SPI_MASTER && ARCH_PXA && EXPERIMENTAL
	93	help
	94	This enables using a PXA2xx SSP port as a SPI master controller.
	95	The driver can be configured to use any SSP port and additional
	96	documentation can be found a Documentation/spi/pxa2xx.
	97
1fc7547d BD	98	config SPI_S3C24XX_GPIO
	99	tristate "Samsung S3C24XX series SPI by GPIO"
	100	depends on SPI_MASTER && ARCH_S3C2410 && SPI_BITBANG && EXPERIMENTAL
	101	help
	102	SPI driver for Samsung S3C24XX series ARM SoCs using
	103	GPIO lines to provide the SPI bus. This can be used where
	104	the inbuilt hardware cannot provide the transfer mode, or
	105	where the board is using non hardware connected pins.
8ae12a0d DB	106	#
	107	# Add new SPI master controllers in alphabetical order above this line
	108	#
	109
	110
7fba5340 BD	111	config SPI_S3C24XX
	112	tristate "Samsung S3C24XX series SPI"
	113	depends on SPI_MASTER && ARCH_S3C2410 && EXPERIMENTAL
	114	help
	115	SPI driver for Samsung S3C24XX series ARM SoCs
	116
8ae12a0d DB	117	#
	118	# There are lots of SPI device types, with sensors and memory
	119	# being probably the most widely used ones.
	120	#
	121	comment "SPI Protocol Masters"
	122	depends on SPI_MASTER
	123
	124
	125	#
	126	# Add new SPI protocol masters in alphabetical order above this line
	127	#
	128
	129
	130	# (slave support would go here)
	131
	132	endmenu # "SPI support"
	133