| # |
| # 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 |
