1 files changed, 109 insertions, 0 deletions

diff --git a/drivers/spi/Kconfig b/drivers/spi/Kconfig
new file mode 100644
index 000000000000..b77dbd63e596
--- /dev/null
+++ b/drivers/spi/Kconfig
@@ -0,0 +1,109 @@
+#
+# 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 microcontollers 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_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.
+
+#
+# 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
+
+
+#
+# Add new SPI protocol masters in alphabetical order above this line
+#
+
+
+# (slave support would go here)
+
+endmenu # "SPI support"
+