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#
# 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 && BLACKFIN
        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/QUICC Engine SPI controller"
        depends on SPI_MASTER && (PPC_83xx || QUICC_ENGINE) && EXPERIMENTAL
        select SPI_BITBANG
        help
          This enables using the Freescale MPC83xx and QUICC Engine SPI
          controllers in master mode.

          Note, this driver uniquely supports the SPI controller on the MPC83xx
          family of PowerPC processors, plus processors with QUICC Engine
          technology. 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 SPI_MASTER && ARCH_OMAP1
        select SPI_BITBANG
        help
          This hooks up to the MicroWire controller on OMAP1 chips.

config SPI_OMAP24XX
        tristate "McSPI driver for OMAP24xx"
        depends on SPI_MASTER && ARCH_OMAP24XX
        help
          SPI master controller for OMAP24xx Multichannel SPI
          (McSPI) modules.

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
        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 SPI_MASTER && 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_TXX9
        tristate "Toshiba TXx9 SPI controller"
        depends on SPI_MASTER && GENERIC_GPIO && CPU_TX49XX
        help
          SPI driver for Toshiba TXx9 MIPS SoCs

config SPI_XILINX
        tristate "Xilinx SPI controller"
        depends on SPI_MASTER && XILINX_VIRTEX && 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"
        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.

config SPI_TLE62X0
        tristate "Infineon TLE62X0 (for power switching)"
        depends on SPI_MASTER && 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
#

# (slave support would go here)

endmenu # "SPI support"