8b60d6c25b
Add eSPI controller support based on the library code spi_fsl_lib.c. The eSPI controller is newer controller 85xx/Pxxx devices supported. There're some differences comparing to the SPI controller: 1. Has different register map and different bit definition So leave the code operated the register to the driver code, not the common code. 2. Support 4 dedicated chip selects The software can't controll the chip selects directly, The SPCOM[CS] field is used to select which chip selects is used, and the SPCOM[TRANLEN] field is set to tell the controller how long the CS signal need to be asserted. So the driver doesn't need the chipselect related function when transfering data, just set corresponding register fields to controll the chipseclect. 3. Different Transmit/Receive FIFO access register behavior For SPI controller, the Tx/Rx FIFO access register can hold only one character regardless of the character length, but for eSPI controller, the register can hold 4 or 2 characters according to the character lengths. Access the Tx/Rx FIFO access register of the eSPI controller will shift out/in 4/2 characters one time. For SPI subsystem, the command and data are put into different transfers, so we need to combine all the transfers to one transfer in order to pass the transfer to eSPI controller. 4. The max transaction length limitation The max transaction length one time is limitted by the SPCOM[TRANSLEN] field which is 0xFFFF. When used mkfs.ext2 command to create ext2 filesystem on the flash, the read length will exceed the max value of the SPCOM[TRANSLEN] field. Signed-off-by: Mingkai Hu <Mingkai.hu@freescale.com> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
413 lines
12 KiB
Plaintext
413 lines
12 KiB
Plaintext
#
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# SPI driver configuration
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#
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# NOTE: the reason this doesn't show SPI slave support is mostly that
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# nobody's needed a slave side API yet. The master-role API is not
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# fully appropriate there, so it'd need some thought to do well.
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#
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menuconfig SPI
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bool "SPI support"
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depends on HAS_IOMEM
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help
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The "Serial Peripheral Interface" is a low level synchronous
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protocol. Chips that support SPI can have data transfer rates
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up to several tens of Mbit/sec. Chips are addressed with a
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controller and a chipselect. Most SPI slaves don't support
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dynamic device discovery; some are even write-only or read-only.
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SPI is widely used by microcontrollers to talk with sensors,
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eeprom and flash memory, codecs and various other controller
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chips, analog to digital (and d-to-a) converters, and more.
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MMC and SD cards can be accessed using SPI protocol; and for
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DataFlash cards used in MMC sockets, SPI must always be used.
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SPI is one of a family of similar protocols using a four wire
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interface (select, clock, data in, data out) including Microwire
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(half duplex), SSP, SSI, and PSP. This driver framework should
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work with most such devices and controllers.
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if SPI
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config SPI_DEBUG
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boolean "Debug support for SPI drivers"
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depends on DEBUG_KERNEL
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help
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Say "yes" to enable debug messaging (like dev_dbg and pr_debug),
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sysfs, and debugfs support in SPI controller and protocol drivers.
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#
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# MASTER side ... talking to discrete SPI slave chips including microcontrollers
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#
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config SPI_MASTER
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# boolean "SPI Master Support"
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boolean
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default SPI
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help
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If your system has an master-capable SPI controller (which
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provides the clock and chipselect), you can enable that
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controller and the protocol drivers for the SPI slave chips
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that are connected.
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if SPI_MASTER
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comment "SPI Master Controller Drivers"
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config SPI_ATMEL
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tristate "Atmel SPI Controller"
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depends on (ARCH_AT91 || AVR32)
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help
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This selects a driver for the Atmel SPI Controller, present on
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many AT32 (AVR32) and AT91 (ARM) chips.
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config SPI_BFIN
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tristate "SPI controller driver for ADI Blackfin5xx"
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depends on BLACKFIN
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help
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This is the SPI controller master driver for Blackfin 5xx processor.
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config SPI_AU1550
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tristate "Au1550/Au12x0 SPI Controller"
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depends on (SOC_AU1550 || SOC_AU1200) && EXPERIMENTAL
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select SPI_BITBANG
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help
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If you say yes to this option, support will be included for the
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Au1550 SPI controller (may also work with Au1200,Au1210,Au1250).
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This driver can also be built as a module. If so, the module
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will be called au1550_spi.
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config SPI_BITBANG
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tristate "Utilities for Bitbanging SPI masters"
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help
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With a few GPIO pins, your system can bitbang the SPI protocol.
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Select this to get SPI support through I/O pins (GPIO, parallel
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port, etc). Or, some systems' SPI master controller drivers use
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this code to manage the per-word or per-transfer accesses to the
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hardware shift registers.
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This is library code, and is automatically selected by drivers that
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need it. You only need to select this explicitly to support driver
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modules that aren't part of this kernel tree.
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config SPI_BUTTERFLY
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tristate "Parallel port adapter for AVR Butterfly (DEVELOPMENT)"
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depends on PARPORT
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select SPI_BITBANG
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help
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This uses a custom parallel port cable to connect to an AVR
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Butterfly <http://www.atmel.com/products/avr/butterfly>, an
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inexpensive battery powered microcontroller evaluation board.
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This same cable can be used to flash new firmware.
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config SPI_COLDFIRE_QSPI
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tristate "Freescale Coldfire QSPI controller"
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depends on (M520x || M523x || M5249 || M527x || M528x || M532x)
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help
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This enables support for the Coldfire QSPI controller in master
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mode.
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This driver can also be built as a module. If so, the module
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will be called coldfire_qspi.
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config SPI_DAVINCI
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tristate "SPI controller driver for DaVinci/DA8xx SoC's"
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depends on SPI_MASTER && ARCH_DAVINCI
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select SPI_BITBANG
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help
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SPI master controller for DaVinci and DA8xx SPI modules.
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config SPI_EP93XX
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tristate "Cirrus Logic EP93xx SPI controller"
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depends on ARCH_EP93XX
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help
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This enables using the Cirrus EP93xx SPI controller in master
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mode.
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To compile this driver as a module, choose M here. The module will be
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called ep93xx_spi.
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config SPI_GPIO
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tristate "GPIO-based bitbanging SPI Master"
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depends on GENERIC_GPIO
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select SPI_BITBANG
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help
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This simple GPIO bitbanging SPI master uses the arch-neutral GPIO
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interface to manage MOSI, MISO, SCK, and chipselect signals. SPI
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slaves connected to a bus using this driver are configured as usual,
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except that the spi_board_info.controller_data holds the GPIO number
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for the chipselect used by this controller driver.
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Note that this driver often won't achieve even 1 Mbit/sec speeds,
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making it unusually slow for SPI. If your platform can inline
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GPIO operations, you should be able to leverage that for better
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speed with a custom version of this driver; see the source code.
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config SPI_IMX
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tristate "Freescale i.MX SPI controllers"
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depends on ARCH_MXC
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select SPI_BITBANG
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help
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This enables using the Freescale i.MX SPI controllers in master
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mode.
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config SPI_LM70_LLP
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tristate "Parallel port adapter for LM70 eval board (DEVELOPMENT)"
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depends on PARPORT && EXPERIMENTAL
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select SPI_BITBANG
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help
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This driver supports the NS LM70 LLP Evaluation Board,
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which interfaces to an LM70 temperature sensor using
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a parallel port.
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config SPI_MPC52xx
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tristate "Freescale MPC52xx SPI (non-PSC) controller support"
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depends on PPC_MPC52xx && SPI
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select SPI_MASTER_OF
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help
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This drivers supports the MPC52xx SPI controller in master SPI
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mode.
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config SPI_MPC52xx_PSC
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tristate "Freescale MPC52xx PSC SPI controller"
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depends on PPC_MPC52xx && EXPERIMENTAL
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help
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This enables using the Freescale MPC52xx Programmable Serial
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Controller in master SPI mode.
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config SPI_MPC512x_PSC
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tristate "Freescale MPC512x PSC SPI controller"
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depends on SPI_MASTER && PPC_MPC512x
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help
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This enables using the Freescale MPC5121 Programmable Serial
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Controller in SPI master mode.
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config SPI_FSL_LIB
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tristate
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depends on FSL_SOC
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config SPI_FSL_SPI
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tristate "Freescale SPI controller"
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depends on FSL_SOC
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select SPI_FSL_LIB
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help
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This enables using the Freescale SPI controllers in master mode.
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MPC83xx platform uses the controller in cpu mode or CPM/QE mode.
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MPC8569 uses the controller in QE mode, MPC8610 in cpu mode.
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config SPI_FSL_ESPI
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tristate "Freescale eSPI controller"
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depends on FSL_SOC
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select SPI_FSL_LIB
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help
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This enables using the Freescale eSPI controllers in master mode.
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From MPC8536, 85xx platform uses the controller, and all P10xx,
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P20xx, P30xx,P40xx, P50xx uses this controller.
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config SPI_OMAP_UWIRE
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tristate "OMAP1 MicroWire"
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depends on ARCH_OMAP1
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select SPI_BITBANG
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help
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This hooks up to the MicroWire controller on OMAP1 chips.
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config SPI_OMAP24XX
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tristate "McSPI driver for OMAP"
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depends on ARCH_OMAP2PLUS
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help
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SPI master controller for OMAP24XX and later Multichannel SPI
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(McSPI) modules.
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config SPI_OMAP_100K
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tristate "OMAP SPI 100K"
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depends on SPI_MASTER && (ARCH_OMAP850 || ARCH_OMAP730)
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help
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OMAP SPI 100K master controller for omap7xx boards.
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config SPI_ORION
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tristate "Orion SPI master (EXPERIMENTAL)"
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depends on PLAT_ORION && EXPERIMENTAL
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help
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This enables using the SPI master controller on the Orion chips.
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config SPI_PL022
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tristate "ARM AMBA PL022 SSP controller (EXPERIMENTAL)"
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depends on ARM_AMBA && EXPERIMENTAL
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default y if MACH_U300
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default y if ARCH_REALVIEW
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default y if INTEGRATOR_IMPD1
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default y if ARCH_VERSATILE
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help
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This selects the ARM(R) AMBA(R) PrimeCell PL022 SSP
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controller. If you have an embedded system with an AMBA(R)
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bus and a PL022 controller, say Y or M here.
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config SPI_PPC4xx
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tristate "PPC4xx SPI Controller"
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depends on PPC32 && 4xx && SPI_MASTER
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select SPI_BITBANG
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help
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This selects a driver for the PPC4xx SPI Controller.
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config SPI_PXA2XX
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tristate "PXA2xx SSP SPI master"
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depends on ARCH_PXA && EXPERIMENTAL
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select PXA_SSP
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help
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This enables using a PXA2xx SSP port as a SPI master controller.
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The driver can be configured to use any SSP port and additional
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documentation can be found a Documentation/spi/pxa2xx.
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config SPI_S3C24XX
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tristate "Samsung S3C24XX series SPI"
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depends on ARCH_S3C2410 && EXPERIMENTAL
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select SPI_BITBANG
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help
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SPI driver for Samsung S3C24XX series ARM SoCs
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config SPI_S3C24XX_FIQ
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bool "S3C24XX driver with FIQ pseudo-DMA"
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depends on SPI_S3C24XX
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select FIQ
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help
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Enable FIQ support for the S3C24XX SPI driver to provide pseudo
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DMA by using the fast-interrupt request framework, This allows
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the driver to get DMA-like performance when there are either
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no free DMA channels, or when doing transfers that required both
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TX and RX data paths.
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config SPI_S3C24XX_GPIO
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tristate "Samsung S3C24XX series SPI by GPIO"
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depends on ARCH_S3C2410 && EXPERIMENTAL
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select SPI_BITBANG
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help
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SPI driver for Samsung S3C24XX series ARM SoCs using
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GPIO lines to provide the SPI bus. This can be used where
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the inbuilt hardware cannot provide the transfer mode, or
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where the board is using non hardware connected pins.
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config SPI_S3C64XX
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tristate "Samsung S3C64XX series type SPI"
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depends on ARCH_S3C64XX && EXPERIMENTAL
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select S3C64XX_DMA
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help
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SPI driver for Samsung S3C64XX and newer SoCs.
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config SPI_SH_MSIOF
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tristate "SuperH MSIOF SPI controller"
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depends on SUPERH && HAVE_CLK
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select SPI_BITBANG
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help
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SPI driver for SuperH MSIOF blocks.
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config SPI_SH_SCI
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tristate "SuperH SCI SPI controller"
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depends on SUPERH
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select SPI_BITBANG
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help
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SPI driver for SuperH SCI blocks.
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config SPI_STMP3XXX
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tristate "Freescale STMP37xx/378x SPI/SSP controller"
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depends on ARCH_STMP3XXX && SPI_MASTER
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help
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SPI driver for Freescale STMP37xx/378x SoC SSP interface
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config SPI_TOPCLIFF_PCH
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tristate "Topcliff PCH SPI Controller"
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depends on PCI
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help
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SPI driver for the Topcliff PCH (Platform Controller Hub) SPI bus
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used in some x86 embedded processors.
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config SPI_TXX9
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tristate "Toshiba TXx9 SPI controller"
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depends on GENERIC_GPIO && CPU_TX49XX
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help
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SPI driver for Toshiba TXx9 MIPS SoCs
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config SPI_XILINX
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tristate "Xilinx SPI controller common module"
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depends on HAS_IOMEM && EXPERIMENTAL
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select SPI_BITBANG
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select SPI_XILINX_OF if (XILINX_VIRTEX || MICROBLAZE)
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help
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This exposes the SPI controller IP from the Xilinx EDK.
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See the "OPB Serial Peripheral Interface (SPI) (v1.00e)"
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Product Specification document (DS464) for hardware details.
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Or for the DS570, see "XPS Serial Peripheral Interface (SPI) (v2.00b)"
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config SPI_XILINX_OF
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tristate "Xilinx SPI controller OF device"
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depends on SPI_XILINX && (XILINX_VIRTEX || MICROBLAZE)
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help
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This is the OF driver for the SPI controller IP from the Xilinx EDK.
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config SPI_XILINX_PLTFM
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tristate "Xilinx SPI controller platform device"
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depends on SPI_XILINX
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help
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This is the platform driver for the SPI controller IP
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from the Xilinx EDK.
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config SPI_NUC900
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tristate "Nuvoton NUC900 series SPI"
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depends on ARCH_W90X900 && EXPERIMENTAL
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select SPI_BITBANG
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help
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SPI driver for Nuvoton NUC900 series ARM SoCs
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#
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# Add new SPI master controllers in alphabetical order above this line
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#
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config SPI_DESIGNWARE
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tristate "DesignWare SPI controller core support"
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depends on SPI_MASTER
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help
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general driver for SPI controller core from DesignWare
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config SPI_DW_PCI
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tristate "PCI interface driver for DW SPI core"
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depends on SPI_DESIGNWARE && PCI
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config SPI_DW_MMIO
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tristate "Memory-mapped io interface driver for DW SPI core"
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depends on SPI_DESIGNWARE && HAVE_CLK
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#
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# There are lots of SPI device types, with sensors and memory
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# being probably the most widely used ones.
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#
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comment "SPI Protocol Masters"
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config SPI_SPIDEV
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tristate "User mode SPI device driver support"
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depends on EXPERIMENTAL
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help
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This supports user mode SPI protocol drivers.
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Note that this application programming interface is EXPERIMENTAL
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and hence SUBJECT TO CHANGE WITHOUT NOTICE while it stabilizes.
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config SPI_TLE62X0
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tristate "Infineon TLE62X0 (for power switching)"
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depends on SYSFS
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help
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SPI driver for Infineon TLE62X0 series line driver chips,
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such as the TLE6220, TLE6230 and TLE6240. This provides a
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sysfs interface, with each line presented as a kind of GPIO
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exposing both switch control and diagnostic feedback.
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#
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# Add new SPI protocol masters in alphabetical order above this line
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#
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endif # SPI_MASTER
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# (slave support would go here)
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endif # SPI
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