forked from luck/tmp_suning_uos_patched
0c03a1dd5b
v2 changes:
from Thierry Reding:
* add "select TEGRA_SYSTEM_DMA" to Kconfig
from Grant Likely:
* add oneline description to header
* inline references to DRIVER_NAME
* inline references to BUSY_TIMEOUT
* open coded bytes_per_word()
* spi_readl/writel -> spi_tegra_readl/writel
* move transfer validation to spi_tegra_transfer
* don't request_mem_region iomem as platform bus does that for us
* __exit -> __devexit
v3 changes:
from Russell King:
* put request_mem_region back int
from Grant Likely:
* remove #undef DEBUG
* add SLINK_ to register bit defines
* remove unused bytes_per_word
* make spi_tegra_readl/writel static linine
* various refactoring for clarity
* mark err if BSY bit is not cleared after 1000 retries
* move spinlock to protect setting of RDY bit
* subsys_initcall -> module_init
v3 changes:
from Grant Likely:
* update spi_tegra to use PTR_ERRless dma API
v4 changes:
from Grant Likely:
* remove empty spi_tegra_cleanup fucntion
* allow device ids of -1
Signed-off-by: Erik Gilling <konkers@android.com>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Cc: Thierry Reding <thierry.reding@avionic-design.de>
Cc: Russell King <linux@arm.linux.org.uk>
spi: tegra: cleanups from upstream review
Change-Id: Icecf7e64efcb39de072a15234ba1faa4bad40d25
Signed-off-by: Erik Gilling <konkers@android.com>
436 lines
13 KiB
Plaintext
436 lines
13 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_VER_IMX1
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def_bool y if SOC_IMX1
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config SPI_IMX_VER_0_0
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def_bool y if SOC_IMX21 || SOC_IMX27
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config SPI_IMX_VER_0_4
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def_bool y if ARCH_MX31
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config SPI_IMX_VER_0_7
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def_bool y if ARCH_MX25 || ARCH_MX35 || ARCH_MX51
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config SPI_IMX_VER_2_3
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def_bool y if ARCH_MX51
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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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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 && 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_TEGRA
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tristate "Nvidia Tegra SPI controller"
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depends on ARCH_TEGRA
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select TEGRA_SYSTEM_DMA
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help
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SPI driver for NVidia Tegra SoCs
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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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