drivers/spi/Kconfig

   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 menuconfig SPI
   9         bool "SPI support"
  10         depends on HAS_IOMEM
  11         help
  12           The "Serial Peripheral Interface" is a low level synchronous
  13           protocol.  Chips that support SPI can have data transfer rates
  14           up to several tens of Mbit/sec.  Chips are addressed with a
  15           controller and a chipselect.  Most SPI slaves don't support
  16           dynamic device discovery; some are even write-only or read-only.
  17
  18           SPI is widely used by microcontrollers to talk with sensors,
  19           eeprom and flash memory, codecs and various other controller
  20           chips, analog to digital (and d-to-a) converters, and more.
  21           MMC and SD cards can be accessed using SPI protocol; and for
  22           DataFlash cards used in MMC sockets, SPI must always be used.
  23
  24           SPI is one of a family of similar protocols using a four wire
  25           interface (select, clock, data in, data out) including Microwire
  26           (half duplex), SSP, SSI, and PSP.  This driver framework should
  27           work with most such devices and controllers.
  28
  29 if SPI
  30
  31 config SPI_DEBUG
  32         boolean "Debug support for SPI drivers"
  33         depends on 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 if SPI_MASTER
  53
  54 comment "SPI Master Controller Drivers"
  55
  56 config SPI_ATMEL
  57         tristate "Atmel SPI Controller"
  58         depends on (ARCH_AT91 || AVR32)
  59         help
  60           This selects a driver for the Atmel SPI Controller, present on
  61           many AT32 (AVR32) and AT91 (ARM) chips.
  62
  63 config SPI_BFIN
  64         tristate "SPI controller driver for ADI Blackfin5xx"
  65         depends on BLACKFIN
  66         help
  67           This is the SPI controller master driver for Blackfin 5xx processor.
  68
  69 config SPI_AU1550
  70         tristate "Au1550/Au12x0 SPI Controller"
  71         depends on (SOC_AU1550 || SOC_AU1200) && EXPERIMENTAL
  72         select SPI_BITBANG
  73         help
  74           If you say yes to this option, support will be included for the
  75           Au1550 SPI controller (may also work with Au1200,Au1210,Au1250).
  76
  77           This driver can also be built as a module.  If so, the module
  78           will be called au1550_spi.
  79
  80 config SPI_BITBANG
  81         tristate "Utilities for Bitbanging SPI masters"
  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.
  92
  93 config SPI_BUTTERFLY
  94         tristate "Parallel port adapter for AVR Butterfly (DEVELOPMENT)"
  95         depends on PARPORT
  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
 103 config SPI_GPIO
 104         tristate "GPIO-based bitbanging SPI Master"
 105         depends on GENERIC_GPIO
 106         select SPI_BITBANG
 107         help
 108           This simple GPIO bitbanging SPI master uses the arch-neutral GPIO
 109           interface to manage MOSI, MISO, SCK, and chipselect signals.  SPI
 110           slaves connected to a bus using this driver are configured as usual,
 111           except that the spi_board_info.controller_data holds the GPIO number
 112           for the chipselect used by this controller driver.
 113
 114           Note that this driver often won't achieve even 1 Mbit/sec speeds,
 115           making it unusually slow for SPI.  If your platform can inline
 116           GPIO operations, you should be able to leverage that for better
 117           speed with a custom version of this driver; see the source code.
 118
 119 config SPI_IMX
 120         tristate "Freescale i.MX SPI controllers"
 121         depends on ARCH_MXC
 122         select SPI_BITBANG
 123         help
 124           This enables using the Freescale i.MX SPI controllers in master
 125           mode.
 126
 127 config SPI_LM70_LLP
 128         tristate "Parallel port adapter for LM70 eval board (DEVELOPMENT)"
 129         depends on PARPORT && EXPERIMENTAL
 130         select SPI_BITBANG
 131         help
 132           This driver supports the NS LM70 LLP Evaluation Board,
 133           which interfaces to an LM70 temperature sensor using
 134           a parallel port.
 135
 136 config SPI_MPC52xx_PSC
 137         tristate "Freescale MPC52xx PSC SPI controller"
 138         depends on PPC_MPC52xx && EXPERIMENTAL
 139         help
 140           This enables using the Freescale MPC52xx Programmable Serial
 141           Controller in master SPI mode.
 142
 143 config SPI_MPC8xxx
 144         tristate "Freescale MPC8xxx SPI controller"
 145         depends on FSL_SOC
 146         help
 147           This enables using the Freescale MPC8xxx SPI controllers in master
 148           mode.
 149
 150           This driver uses a simple set of shift registers for data (opposed
 151           to the CPM based descriptor model).
 152
 153 config SPI_OMAP_UWIRE
 154         tristate "OMAP1 MicroWire"
 155         depends on ARCH_OMAP1
 156         select SPI_BITBANG
 157         help
 158           This hooks up to the MicroWire controller on OMAP1 chips.
 159
 160 config SPI_OMAP24XX
 161         tristate "McSPI driver for OMAP24xx/OMAP34xx"
 162         depends on ARCH_OMAP24XX || ARCH_OMAP34XX
 163         help
 164           SPI master controller for OMAP24xx/OMAP34xx Multichannel SPI
 165           (McSPI) modules.
 166
 167 config SPI_ORION
 168         tristate "Orion SPI master (EXPERIMENTAL)"
 169         depends on PLAT_ORION && EXPERIMENTAL
 170         help
 171           This enables using the SPI master controller on the Orion chips.
 172
 173 config SPI_PL022
 174         tristate "ARM AMBA PL022 SSP controller (EXPERIMENTAL)"
 175         depends on ARM_AMBA && EXPERIMENTAL
 176         default y if MACH_U300
 177         default y if ARCH_REALVIEW
 178         default y if INTEGRATOR_IMPD1
 179         default y if ARCH_VERSATILE
 180         help
 181           This selects the ARM(R) AMBA(R) PrimeCell PL022 SSP
 182           controller. If you have an embedded system with an AMBA(R)
 183           bus and a PL022 controller, say Y or M here.
 184
 185 config SPI_PPC4xx
 186         tristate "PPC4xx SPI Controller"
 187         depends on PPC32 && 4xx && SPI_MASTER
 188         select SPI_BITBANG
 189         help
 190           This selects a driver for the PPC4xx SPI Controller.
 191
 192 config SPI_PXA2XX
 193         tristate "PXA2xx SSP SPI master"
 194         depends on ARCH_PXA && EXPERIMENTAL
 195         select PXA_SSP
 196         help
 197           This enables using a PXA2xx SSP port as a SPI master controller.
 198           The driver can be configured to use any SSP port and additional
 199           documentation can be found a Documentation/spi/pxa2xx.
 200
 201 config SPI_S3C24XX
 202         tristate "Samsung S3C24XX series SPI"
 203         depends on ARCH_S3C2410 && EXPERIMENTAL
 204         select SPI_BITBANG
 205         help
 206           SPI driver for Samsung S3C24XX series ARM SoCs
 207
 208 config SPI_S3C24XX_GPIO
 209         tristate "Samsung S3C24XX series SPI by GPIO"
 210         depends on ARCH_S3C2410 && EXPERIMENTAL
 211         select SPI_BITBANG
 212         help
 213           SPI driver for Samsung S3C24XX series ARM SoCs using
 214           GPIO lines to provide the SPI bus. This can be used where
 215           the inbuilt hardware cannot provide the transfer mode, or
 216           where the board is using non hardware connected pins.
 217
 218 config SPI_SH_SCI
 219         tristate "SuperH SCI SPI controller"
 220         depends on SUPERH
 221         select SPI_BITBANG
 222         help
 223           SPI driver for SuperH SCI blocks.
 224
 225 config SPI_STMP3XXX
 226         tristate "Freescale STMP37xx/378x SPI/SSP controller"
 227         depends on ARCH_STMP3XXX && SPI_MASTER
 228         help
 229           SPI driver for Freescale STMP37xx/378x SoC SSP interface
 230
 231 config SPI_TXX9
 232         tristate "Toshiba TXx9 SPI controller"
 233         depends on GENERIC_GPIO && CPU_TX49XX
 234         help
 235           SPI driver for Toshiba TXx9 MIPS SoCs
 236
 237 config SPI_XILINX
 238         tristate "Xilinx SPI controller"
 239         depends on (XILINX_VIRTEX || MICROBLAZE) && EXPERIMENTAL
 240         select SPI_BITBANG
 241         help
 242           This exposes the SPI controller IP from the Xilinx EDK.
 243
 244           See the "OPB Serial Peripheral Interface (SPI) (v1.00e)"
 245           Product Specification document (DS464) for hardware details.
 246
 247 #
 248 # Add new SPI master controllers in alphabetical order above this line
 249 #
 250
 251 #
 252 # There are lots of SPI device types, with sensors and memory
 253 # being probably the most widely used ones.
 254 #
 255 comment "SPI Protocol Masters"
 256
 257 config SPI_SPIDEV
 258         tristate "User mode SPI device driver support"
 259         depends on EXPERIMENTAL
 260         help
 261           This supports user mode SPI protocol drivers.
 262
 263           Note that this application programming interface is EXPERIMENTAL
 264           and hence SUBJECT TO CHANGE WITHOUT NOTICE while it stabilizes.
 265
 266 config SPI_TLE62X0
 267         tristate "Infineon TLE62X0 (for power switching)"
 268         depends on SYSFS
 269         help
 270           SPI driver for Infineon TLE62X0 series line driver chips,
 271           such as the TLE6220, TLE6230 and TLE6240.  This provides a
 272           sysfs interface, with each line presented as a kind of GPIO
 273           exposing both switch control and diagnostic feedback.
 274
 275 #
 276 # Add new SPI protocol masters in alphabetical order above this line
 277 #
 278
 279 endif # SPI_MASTER
 280
 281 # (slave support would go here)
 282
 283 endif # SPI