2d2e7d195b
A respun version of the merges for the pull request previously sent with
a few additional fixes. The last two merges were fixed up by hand since
the branches have moved on and currently have the prior merge in them.
Quite a busy release for the SPI subsystem, mostly in cleanups big and
small scattered through the stack rather than anything else:
- New driver for the Broadcom BC63xx HSSPI controller.
- Fix duplicate device registration for ACPI.
- Conversion of s3c64xx to DMAEngine (this pulls in platform and DMA
changes upon which the transiton depends).
- Some small optimisations to reduce the amount of time we hold locks
in the datapath, eliminate some redundant checks and the size of a
spi_transfer.
- Lots of fixes, cleanups and general enhancements to drivers,
especially the rspi and Atmel drivers.
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Merge tag 'spi-v3.14-2' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi
Pull spi updates from Mark Brown:
"A respun version of the merges for the pull request previously sent
with a few additional fixes. The last two merges were fixed up by
hand since the branches have moved on and currently have the prior
merge in them.
Quite a busy release for the SPI subsystem, mostly in cleanups big and
small scattered through the stack rather than anything else:
- New driver for the Broadcom BC63xx HSSPI controller
- Fix duplicate device registration for ACPI
- Conversion of s3c64xx to DMAEngine (this pulls in platform and DMA
changes upon which the transiton depends)
- Some small optimisations to reduce the amount of time we hold locks
in the datapath, eliminate some redundant checks and the size of a
spi_transfer
- Lots of fixes, cleanups and general enhancements to drivers,
especially the rspi and Atmel drivers"
* tag 'spi-v3.14-2' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi: (112 commits)
spi: core: Fix transfer failure when master->transfer_one returns positive value
spi: Correct set_cs() documentation
spi: Clarify transfer_one() w.r.t. spi_finalize_current_transfer()
spi: Spelling s/finised/finished/
spi: sc18is602: Convert to use bits_per_word_mask
spi: Remove duplicate code to set default bits_per_word setting
spi/pxa2xx: fix compilation warning when !CONFIG_PM_SLEEP
spi: clps711x: Add MODULE_ALIAS to support module auto-loading
spi: rspi: Add missing clk_disable() calls in error and cleanup paths
spi: rspi: Spelling s/transmition/transmission/
spi: rspi: Add support for specifying CPHA/CPOL
spi/pxa2xx: initialize DMA channels to -1 to prevent inadvertent match
spi: rspi: Add more QSPI register documentation
spi: rspi: Add more RSPI register documentation
spi: rspi: Remove dependency on DMAE for SHMOBILE
spi/s3c64xx: Correct indentation
spi: sh: Use spi_sh_clear_bit() instead of open-coded
spi: bitbang: Grammar s/make to make/to make/
spi: sh-hspi: Spelling s/recive/receive/
spi: core: Improve tx/rx_nbits check comments
...
582 lines
17 KiB
Text
582 lines
17 KiB
Text
#
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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_ALTERA
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tristate "Altera SPI Controller"
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select SPI_BITBANG
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help
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This is the driver for the Altera SPI Controller.
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config SPI_ATH79
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tristate "Atheros AR71XX/AR724X/AR913X SPI controller driver"
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depends on ATH79 && GPIOLIB
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select SPI_BITBANG
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help
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This enables support for the SPI controller present on the
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Atheros AR71XX/AR724X/AR913X SoCs.
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config SPI_ATMEL
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tristate "Atmel SPI Controller"
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depends on (ARCH_AT91 || AVR32 || COMPILE_TEST)
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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_BCM2835
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tristate "BCM2835 SPI controller"
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depends on ARCH_BCM2835 || COMPILE_TEST
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help
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This selects a driver for the Broadcom BCM2835 SPI master.
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The BCM2835 contains two types of SPI master controller; the
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"universal SPI master", and the regular SPI controller. This driver
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is for the regular SPI controller. Slave mode operation is not also
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not supported.
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config SPI_BFIN5XX
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tristate "SPI controller driver for ADI Blackfin5xx"
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depends on BLACKFIN && !BF60x
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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_BFIN_V3
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tristate "SPI controller v3 for Blackfin"
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depends on BF60x
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help
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This is the SPI controller v3 master driver
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found on Blackfin 60x processor.
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config SPI_BFIN_SPORT
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tristate "SPI bus via Blackfin SPORT"
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depends on BLACKFIN
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help
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Enable support for a SPI bus via the Blackfin SPORT peripheral.
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config SPI_AU1550
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tristate "Au1550/Au1200/Au1300 SPI Controller"
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depends on MIPS_ALCHEMY
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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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PSC SPI controller found on Au1550, Au1200 and Au1300 series.
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config SPI_BCM63XX
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tristate "Broadcom BCM63xx SPI controller"
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depends on BCM63XX
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help
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Enable support for the SPI controller on the Broadcom BCM63xx SoCs.
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config SPI_BCM63XX_HSSPI
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tristate "Broadcom BCM63XX HS SPI controller driver"
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depends on BCM63XX || COMPILE_TEST
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help
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This enables support for the High Speed SPI controller present on
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newer Broadcom BCM63XX SoCs.
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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_CLPS711X
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tristate "CLPS711X host SPI controller"
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depends on ARCH_CLPS711X
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help
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This enables dedicated general purpose SPI/Microwire1-compatible
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master mode interface (SSI1) for CLPS711X-based CPUs.
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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 || M525x || 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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config SPI_DAVINCI
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tristate "Texas Instruments DaVinci/DA8x/OMAP-L/AM1x SoC SPI controller"
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depends on ARCH_DAVINCI || ARCH_KEYSTONE
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select SPI_BITBANG
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help
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SPI master controller for DaVinci/DA8x/OMAP-L/AM1x SPI modules.
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config SPI_EFM32
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tristate "EFM32 SPI controller"
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depends on OF && ARM && (ARCH_EFM32 || COMPILE_TEST)
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select SPI_BITBANG
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help
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Driver for the spi controller found on Energy Micro's EFM32 SoCs.
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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 || COMPILE_TEST
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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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config SPI_FALCON
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tristate "Falcon SPI controller support"
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depends on SOC_FALCON
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help
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The external bus unit (EBU) found on the FALC-ON SoC has SPI
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emulation that is designed for serial flash access. This driver
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has only been tested with m25p80 type chips. The hardware has no
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support for other types of SPI peripherals.
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config SPI_GPIO
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tristate "GPIO-based bitbanging SPI Master"
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depends on GPIOLIB
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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 || COMPILE_TEST
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select SPI_BITBANG
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default m if IMX_HAVE_PLATFORM_SPI_IMX
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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
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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
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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
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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 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 OF
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config SPI_FSL_CPM
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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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bool "Freescale SPI controller and Aeroflex Gaisler GRLIB SPI controller"
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depends on OF
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select SPI_FSL_LIB
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select SPI_FSL_CPM if FSL_SOC
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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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This also enables using the Aeroflex Gaisler GRLIB SPI controller in
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master mode.
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config SPI_FSL_DSPI
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tristate "Freescale DSPI controller"
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select SPI_BITBANG
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depends on SOC_VF610 || COMPILE_TEST
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help
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This enables support for the Freescale DSPI controller in master
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mode. VF610 platform uses the controller.
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config SPI_FSL_ESPI
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bool "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_OC_TINY
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tristate "OpenCores tiny SPI"
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depends on GPIOLIB
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select SPI_BITBANG
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help
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This is the driver for OpenCores tiny SPI master controller.
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config SPI_OCTEON
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tristate "Cavium OCTEON SPI controller"
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depends on CAVIUM_OCTEON_SOC
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help
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SPI host driver for the hardware found on some Cavium OCTEON
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SOCs.
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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 ARM || ARM64 || AVR32 || HEXAGON || MIPS || SH
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depends on ARCH_OMAP2PLUS || COMPILE_TEST
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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_TI_QSPI
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tristate "DRA7xxx QSPI controller support"
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depends on ARCH_OMAP2PLUS || COMPILE_TEST
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help
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QSPI master controller for DRA7xxx used for flash devices.
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This device supports single, dual and quad read support, while
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it only supports single write mode.
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config SPI_OMAP_100K
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tristate "OMAP SPI 100K"
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depends on ARCH_OMAP850 || ARCH_OMAP730 || COMPILE_TEST
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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"
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depends on PLAT_ORION || COMPILE_TEST
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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"
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depends on ARM_AMBA
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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
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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_PXADMA
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bool "PXA2xx SSP legacy PXA DMA API support"
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depends on SPI_PXA2XX && ARCH_PXA
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help
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Enable PXA private legacy DMA API support. Note that this is
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deprecated in favor of generic DMA engine API.
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config SPI_PXA2XX_DMA
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def_bool y
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depends on SPI_PXA2XX && !SPI_PXA2XX_PXADMA
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config SPI_PXA2XX
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tristate "PXA2xx SSP SPI master"
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depends on (ARCH_PXA || PCI || ACPI)
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select PXA_SSP if ARCH_PXA
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help
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This enables using a PXA2xx or Sodaville SSP port as a SPI master
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controller. The driver can be configured to use any SSP port and
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additional documentation can be found a Documentation/spi/pxa2xx.
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config SPI_PXA2XX_PCI
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def_tristate SPI_PXA2XX && PCI
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config SPI_RSPI
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tristate "Renesas RSPI controller"
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depends on (SUPERH && SH_DMAE_BASE) || ARCH_SHMOBILE
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help
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SPI driver for Renesas RSPI blocks.
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config SPI_S3C24XX
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tristate "Samsung S3C24XX series SPI"
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depends on ARCH_S3C24XX
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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_S3C64XX
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tristate "Samsung S3C64XX series type SPI"
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depends on PLAT_SAMSUNG
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select S3C64XX_PL080 if ARCH_S3C64XX
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help
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SPI driver for Samsung S3C64XX and newer SoCs.
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config SPI_SC18IS602
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tristate "NXP SC18IS602/602B/603 I2C to SPI bridge"
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depends on I2C
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help
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SPI driver for NXP SC18IS602/602B/603 I2C to SPI bridge.
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config SPI_SH_MSIOF
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tristate "SuperH MSIOF SPI controller"
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depends on HAVE_CLK
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depends on SUPERH || ARCH_SHMOBILE || COMPILE_TEST
|
|
select SPI_BITBANG
|
|
help
|
|
SPI driver for SuperH and SH Mobile MSIOF blocks.
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|
|
|
config SPI_SH
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|
tristate "SuperH SPI controller"
|
|
depends on SUPERH || COMPILE_TEST
|
|
help
|
|
SPI driver for SuperH SPI blocks.
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|
|
|
config SPI_SH_SCI
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|
tristate "SuperH SCI SPI controller"
|
|
depends on SUPERH
|
|
select SPI_BITBANG
|
|
help
|
|
SPI driver for SuperH SCI blocks.
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|
|
|
config SPI_SH_HSPI
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|
tristate "SuperH HSPI controller"
|
|
depends on ARCH_SHMOBILE || COMPILE_TEST
|
|
help
|
|
SPI driver for SuperH HSPI blocks.
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|
|
|
config SPI_SIRF
|
|
tristate "CSR SiRFprimaII SPI controller"
|
|
depends on SIRF_DMA
|
|
select SPI_BITBANG
|
|
help
|
|
SPI driver for CSR SiRFprimaII SoCs
|
|
|
|
config SPI_MXS
|
|
tristate "Freescale MXS SPI controller"
|
|
depends on ARCH_MXS
|
|
select STMP_DEVICE
|
|
help
|
|
SPI driver for Freescale MXS devices.
|
|
|
|
config SPI_TEGRA114
|
|
tristate "NVIDIA Tegra114 SPI Controller"
|
|
depends on (ARCH_TEGRA && TEGRA20_APB_DMA) || COMPILE_TEST
|
|
depends on RESET_CONTROLLER
|
|
help
|
|
SPI driver for NVIDIA Tegra114 SPI Controller interface. This controller
|
|
is different than the older SoCs SPI controller and also register interface
|
|
get changed with this controller.
|
|
|
|
config SPI_TEGRA20_SFLASH
|
|
tristate "Nvidia Tegra20 Serial flash Controller"
|
|
depends on ARCH_TEGRA || COMPILE_TEST
|
|
depends on RESET_CONTROLLER
|
|
help
|
|
SPI driver for Nvidia Tegra20 Serial flash Controller interface.
|
|
The main usecase of this controller is to use spi flash as boot
|
|
device.
|
|
|
|
config SPI_TEGRA20_SLINK
|
|
tristate "Nvidia Tegra20/Tegra30 SLINK Controller"
|
|
depends on (ARCH_TEGRA && TEGRA20_APB_DMA) || COMPILE_TEST
|
|
depends on RESET_CONTROLLER
|
|
help
|
|
SPI driver for Nvidia Tegra20/Tegra30 SLINK Controller interface.
|
|
|
|
config SPI_TI_SSP
|
|
tristate "TI Sequencer Serial Port - SPI Support"
|
|
depends on MFD_TI_SSP
|
|
help
|
|
This selects an SPI master implementation using a TI sequencer
|
|
serial port.
|
|
|
|
config SPI_TOPCLIFF_PCH
|
|
tristate "Intel EG20T PCH/LAPIS Semicon IOH(ML7213/ML7223/ML7831) SPI"
|
|
depends on PCI
|
|
help
|
|
SPI driver for the Topcliff PCH (Platform Controller Hub) SPI bus
|
|
used in some x86 embedded processors.
|
|
|
|
This driver also supports the ML7213/ML7223/ML7831, a companion chip
|
|
for the Atom E6xx series and compatible with the Intel EG20T PCH.
|
|
|
|
config SPI_TXX9
|
|
tristate "Toshiba TXx9 SPI controller"
|
|
depends on GPIOLIB && (CPU_TX49XX || COMPILE_TEST)
|
|
help
|
|
SPI driver for Toshiba TXx9 MIPS SoCs
|
|
|
|
config SPI_XCOMM
|
|
tristate "Analog Devices AD-FMCOMMS1-EBZ SPI-I2C-bridge driver"
|
|
depends on I2C
|
|
help
|
|
Support for the SPI-I2C bridge found on the Analog Devices
|
|
AD-FMCOMMS1-EBZ board.
|
|
|
|
config SPI_XILINX
|
|
tristate "Xilinx SPI controller common module"
|
|
depends on HAS_IOMEM
|
|
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.
|
|
|
|
Or for the DS570, see "XPS Serial Peripheral Interface (SPI) (v2.00b)"
|
|
|
|
config SPI_NUC900
|
|
tristate "Nuvoton NUC900 series SPI"
|
|
depends on ARCH_W90X900
|
|
select SPI_BITBANG
|
|
help
|
|
SPI driver for Nuvoton NUC900 series ARM SoCs
|
|
|
|
#
|
|
# Add new SPI master controllers in alphabetical order above this line
|
|
#
|
|
|
|
config SPI_DESIGNWARE
|
|
tristate "DesignWare SPI controller core support"
|
|
help
|
|
general driver for SPI controller core from DesignWare
|
|
|
|
config SPI_DW_PCI
|
|
tristate "PCI interface driver for DW SPI core"
|
|
depends on SPI_DESIGNWARE && PCI
|
|
|
|
config SPI_DW_MID_DMA
|
|
bool "DMA support for DW SPI controller on Intel Moorestown platform"
|
|
depends on SPI_DW_PCI && INTEL_MID_DMAC
|
|
|
|
config SPI_DW_MMIO
|
|
tristate "Memory-mapped io interface driver for DW SPI core"
|
|
depends on SPI_DESIGNWARE && HAVE_CLK
|
|
|
|
#
|
|
# 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"
|
|
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
|