mirror of
https://github.com/torvalds/linux.git
synced 2024-12-22 10:56:40 +00:00
575c5807f6
Since we renamed the file, we might want to rename the file internals too. Though we don't bother with changing platform driver name and platform module alias. The stuff is legacy and hopefully we'll remove it soon. Suggested-by: Kumar Gala <galak@kernel.crashing.org> Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com> Cc: David Brownell <david-b@pacbell.net> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
267 lines
8.3 KiB
Plaintext
267 lines
8.3 KiB
Plaintext
#
|
|
# 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.
|
|
#
|
|
menuconfig SPI
|
|
bool "SPI support"
|
|
depends on HAS_IOMEM
|
|
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.
|
|
|
|
if SPI
|
|
|
|
config SPI_DEBUG
|
|
boolean "Debug support for SPI drivers"
|
|
depends on 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.
|
|
|
|
if SPI_MASTER
|
|
|
|
comment "SPI Master Controller Drivers"
|
|
|
|
config SPI_ATMEL
|
|
tristate "Atmel SPI Controller"
|
|
depends on (ARCH_AT91 || AVR32)
|
|
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 BLACKFIN
|
|
help
|
|
This is the SPI controller master driver for Blackfin 5xx processor.
|
|
|
|
config SPI_AU1550
|
|
tristate "Au1550/Au12x0 SPI Controller"
|
|
depends on (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 "Utilities for Bitbanging SPI masters"
|
|
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 PARPORT
|
|
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_GPIO
|
|
tristate "GPIO-based bitbanging SPI Master"
|
|
depends on GENERIC_GPIO
|
|
select SPI_BITBANG
|
|
help
|
|
This simple GPIO bitbanging SPI master uses the arch-neutral GPIO
|
|
interface to manage MOSI, MISO, SCK, and chipselect signals. SPI
|
|
slaves connected to a bus using this driver are configured as usual,
|
|
except that the spi_board_info.controller_data holds the GPIO number
|
|
for the chipselect used by this controller driver.
|
|
|
|
Note that this driver often won't achieve even 1 Mbit/sec speeds,
|
|
making it unusually slow for SPI. If your platform can inline
|
|
GPIO operations, you should be able to leverage that for better
|
|
speed with a custom version of this driver; see the source code.
|
|
|
|
config SPI_IMX
|
|
tristate "Freescale iMX SPI controller"
|
|
depends on ARCH_MX1 && 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 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 PPC_MPC52xx && EXPERIMENTAL
|
|
help
|
|
This enables using the Freescale MPC52xx Programmable Serial
|
|
Controller in master SPI mode.
|
|
|
|
config SPI_MPC8xxx
|
|
tristate "Freescale MPC8xxx SPI controller"
|
|
depends on FSL_SOC
|
|
help
|
|
This enables using the Freescale MPC8xxx SPI controllers in master
|
|
mode.
|
|
|
|
This driver 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 ARCH_OMAP1
|
|
select SPI_BITBANG
|
|
help
|
|
This hooks up to the MicroWire controller on OMAP1 chips.
|
|
|
|
config SPI_OMAP24XX
|
|
tristate "McSPI driver for OMAP24xx/OMAP34xx"
|
|
depends on ARCH_OMAP24XX || ARCH_OMAP34XX
|
|
help
|
|
SPI master controller for OMAP24xx/OMAP34xx Multichannel SPI
|
|
(McSPI) modules.
|
|
|
|
config SPI_ORION
|
|
tristate "Orion SPI master (EXPERIMENTAL)"
|
|
depends on PLAT_ORION && EXPERIMENTAL
|
|
help
|
|
This enables using the SPI master controller on the Orion chips.
|
|
|
|
config SPI_PL022
|
|
tristate "ARM AMBA PL022 SSP controller (EXPERIMENTAL)"
|
|
depends on ARM_AMBA && EXPERIMENTAL
|
|
default y if MACH_U300
|
|
help
|
|
This selects the ARM(R) AMBA(R) PrimeCell PL022 SSP
|
|
controller. If you have an embedded system with an AMBA(R)
|
|
bus and a PL022 controller, say Y or M here.
|
|
|
|
config SPI_PXA2XX
|
|
tristate "PXA2xx SSP SPI master"
|
|
depends on ARCH_PXA && EXPERIMENTAL
|
|
select PXA_SSP
|
|
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 ARCH_S3C2410 && EXPERIMENTAL
|
|
select SPI_BITBANG
|
|
help
|
|
SPI driver for Samsung S3C24XX series ARM SoCs
|
|
|
|
config SPI_S3C24XX_GPIO
|
|
tristate "Samsung S3C24XX series SPI by GPIO"
|
|
depends on ARCH_S3C2410 && EXPERIMENTAL
|
|
select SPI_BITBANG
|
|
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.
|
|
|
|
config SPI_SH_SCI
|
|
tristate "SuperH SCI SPI controller"
|
|
depends on SUPERH
|
|
select SPI_BITBANG
|
|
help
|
|
SPI driver for SuperH SCI blocks.
|
|
|
|
config SPI_TXX9
|
|
tristate "Toshiba TXx9 SPI controller"
|
|
depends on GENERIC_GPIO && CPU_TX49XX
|
|
help
|
|
SPI driver for Toshiba TXx9 MIPS SoCs
|
|
|
|
config SPI_XILINX
|
|
tristate "Xilinx SPI controller"
|
|
depends on (XILINX_VIRTEX || MICROBLAZE) && EXPERIMENTAL
|
|
select SPI_BITBANG
|
|
help
|
|
This exposes the SPI controller IP from the Xilinx EDK.
|
|
|
|
See the "OPB Serial Peripheral Interface (SPI) (v1.00e)"
|
|
Product Specification document (DS464) for hardware details.
|
|
|
|
#
|
|
# 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"
|
|
|
|
config SPI_SPIDEV
|
|
tristate "User mode SPI device driver support"
|
|
depends on 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.
|
|
|
|
config SPI_TLE62X0
|
|
tristate "Infineon TLE62X0 (for power switching)"
|
|
depends on SYSFS
|
|
help
|
|
SPI driver for Infineon TLE62X0 series line driver chips,
|
|
such as the TLE6220, TLE6230 and TLE6240. This provides a
|
|
sysfs interface, with each line presented as a kind of GPIO
|
|
exposing both switch control and diagnostic feedback.
|
|
|
|
#
|
|
# Add new SPI protocol masters in alphabetical order above this line
|
|
#
|
|
|
|
endif # SPI_MASTER
|
|
|
|
# (slave support would go here)
|
|
|
|
endif # SPI
|