05 Jul, 2011
1 commit
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It was equivalent to spi-gpio, and there's no longer any in-tree users
of it, so get rid of it.Signed-off-by: Peter Korsgaard
Acked-by: Ben Dooks
Signed-off-by: Grant Likely
06 Jun, 2011
1 commit
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Sort the SPI makefile and enforce the naming convention spi_*.c for
spi drivers.This change also rolls the contents of atmel_spi.h into the .c file
since there is only one user of that particular include file.v2: - Use 'spi-' prefix instead of 'spi_' to match what seems to be
be the predominant pattern for subsystem prefixes.
- Clean up filenames in Kconfig and header comment blocksSigned-off-by: Grant Likely
Acked-by: Wolfram Sang
Acked-by: Linus Walleij
27 May, 2011
1 commit
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The Blackfin SPORT peripheral is a pretty flexible device. With enough
coaching, we can make it generate SPI compatible waveforms. This is
desirable as the SPORT can run at much higher clock frequencies than the
dedicated on-chip SPI peripheral, and it can do full duplex DMA. It also
opens up the possibility of multiple SPI buses in case someone wants to
dedicate a whole bus to a specific part that does not play well with
others.Signed-off-by: Cliff Cai
Signed-off-by: Bryan Wu
Signed-off-by: Michael Hennerich
Signed-off-by: Mike Frysinger
Signed-off-by: Grant Likely
19 Mar, 2011
1 commit
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* 'spi/next' of git://git.secretlab.ca/git/linux-2.6: (34 commits)
spi/dw_spi: move dw_spi.h into drivers/spi
spi/dw_spi: Fix missing header
gpio/langwell: Clear edge bit before handling
gpio/langwell: Simplify demux loop
gpio/langwell: Convert irq name space
gpio/langwell: Fix broken irq_eoi change.
gpio; Make Intel chipset gpio drivers depend on x86
gpio/cs5535-gpio: Fix section mismatch
spi/rtc-{ds1390,ds3234,m41t94}: Use spi_get_drvdata() for SPI devices
spi/davinci: Support DMA transfers larger than 65535 words
spi/davinci: Use correct length parameter to dma_map_single calls
gpio: Use __devexit at necessary places
gpio: add MODULE_DEVICE_TABLE to pch_gpio and ml_ioh_gpio
gpio/mcp23s08: support mcp23s17 variant
of_mmc_spi: add card detect irq support
spi/omap_mcspi: catch xfers of non-multiple SPI word size
spi/omap_mcspi: Off-by-one error in finding the right divisor
gpio/pca953x: Fix wrong pointer type
spi/pl022: rid dangling labels
spi: add support for SuperH SPI
...
15 Mar, 2011
1 commit
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This patch adds an SPI master implementation that operates on top of an
underlying TI-SSP port.Acked-by: Grant Likely
Signed-off-by: Cyril Chemparathy
Signed-off-by: Sekhar Nori
Signed-off-by: Kevin Hilman
23 Feb, 2011
3 commits
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The SH7757 has SPI0 module. This patch supports it.
Signed-off-by: Yoshihiro Shimoda
[grant.likely@secretlab.ca: fixed Makefile ordering, added
__dev{init,exit} annotations, removed DRIVER_VERSION (this is
mainline, the version == the kernel version) and tidied some
indentation & style stuff]
Signed-off-by: Grant Likely -
This patch adds a new SPI driver to support the Altera SOPC Builder
SPI component. It uses the bitbanging library.Signed-off-by: Thomas Chou
Signed-off-by: Grant Likely -
This patch adds support of OpenCores tiny SPI driver.
http://opencores.org/project,tiny_spi
Signed-off-by: Thomas Chou
Signed-off-by: Grant Likely
19 Jan, 2011
1 commit
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The Atheros AR71XX/AR724X/AR913X SoCs have a built-in SPI controller. This
patch implements a driver for that.Signed-off-by: Gabor Juhos
Cc: David Brownell
Cc: spi-devel-general@lists.sourceforge.net
Acked-by: Grant Likely
Cc: linux-mips@linux-mips.org
Cc: Imre Kaloz
Cc: Luis R. Rodriguez
Cc: Cliff Holden
Cc: Kathy Giori
Patchwork: https://patchwork.linux-mips.org/patch/1960/
Signed-off-by: Ralf Baechle
29 Dec, 2010
1 commit
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* 'spi' of git://git.linutronix.de/users/bigeasy/soda into spi/next
spi/pxa2xx: register driver properly
spi/pxa2xx: add support for shared IRQ handler
spi/pxa2xx: Use define for SSSR_TFL_MASK instead of plain numbers
arm/pxa2xx: reorgazine SSP and SPI header files
spi/pxa2xx: Add CE4100 support
spi/pxa2xx: Consider CE4100's FIFO depth
spi/pxa2xx: Add chipselect support for Sodaville
spi/pxa2xx: Modify RX-Tresh instead of busy-loop for the remaining RX bytes.
spi/pxa2xx: pass of_node to spi device and set a parent device
24 Dec, 2010
1 commit
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dw_spi driver in upstream only supports PIO mode, and this patch
will support it to cowork with the Designware dma controller used
on Intel Moorestown platform, at the same time it provides a general
framework to support dw_spi core to cowork with dma controllers on
other platformsIt has been tested with a Option GTM501L 3G modem and Infenion 60x60
modem. To use DMA mode, DMA controller 2 of Moorestown has to be enabledAlso change the dma interface suggested by Linus Walleij.
Acked-by: Linus Walleij
Signed-off-by: Feng Tang
[Typo fix and renames to match intel_mid_dma renaming]
Signed-off-by: Vinod Koul
Signed-off-by: Alan Cox
Signed-off-by: Grant Likely
01 Dec, 2010
1 commit
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Sodaville's SPI controller is very much the same as in PXA25x. The
difference:
- The RX/TX FIFO is only 4 words deep instead of 16
- No DMA support
- The SPI controller offers a CS functionalitySigned-off-by: Sebastian Andrzej Siewior
Signed-off-by: Dirk Brandewie
10 Nov, 2010
2 commits
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Now that the of_platform_bus_type has been merged with the platform
bus type, a single platform driver can handle both OF and non-OF use
cases. This patch merges the OF support into the platform driver.Signed-off-by: Grant Likely
Tested-by: Michal Simek -
This patch merges the platform driver support into the main body of
xilinx_spi.c in preparation for merging the OF and non-OF support
code.Signed-off-by: Grant Likely
Tested-by: Michal Simek
22 Oct, 2010
1 commit
-
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 -> __devexitv3 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_initv3 changes:
from Grant Likely:
* update spi_tegra to use PTR_ERRless dma APIv4 changes:
from Grant Likely:
* remove empty spi_tegra_cleanup fucntion
* allow device ids of -1Signed-off-by: Erik Gilling
Acked-by: Grant Likely
Cc: Thierry Reding
Cc: Russell Kingspi: tegra: cleanups from upstream review
Change-Id: Icecf7e64efcb39de072a15234ba1faa4bad40d25
Signed-off-by: Erik Gilling
13 Oct, 2010
4 commits
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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
Signed-off-by: Grant Likely -
Refactor the common code in file spi_fsl_spi.c to spi_fsl_lib.c used
by SPI/eSPI controller driver as a library, and leave the QE/CPM SPI
controller code in the SPI controller driver spi_fsl_spi.c.Because the register map of the SPI controller and eSPI controller
is so different, also leave the code operated the register to the
driver code, not the common code.Signed-off-by: Mingkai Hu
Signed-off-by: Grant Likely -
This will pave the way to refactor out the common code which can be used
by the eSPI controller driver, and rename the SPI controller dirver to the
file spi_fsl_spi.c.Signed-off-by: Mingkai Hu
Signed-off-by: Grant Likely -
Replace EXTRA_CFLAGS with ccflags-y.
Signed-off-by: matt mooney
Signed-off-by: Grant Likely
09 Oct, 2010
1 commit
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Topcliff PCH is the platform controller hub that is going to be used
in Intel's upcoming general embedded platform. All IO peripherals in
Topcliff PCH are actually devices sitting on AMBA bus. This patch
adds a driver for the SPI bus integrated into the Topcliff device.Signed-off-by: Masayuki Ohtake
Signed-off-by: Grant Likely
25 May, 2010
2 commits
-
Signed-off-by: John Rigby
Signed-off-by: Anatolij Gustschin
Signed-off-by: Grant Likely -
This patch adds an SPI master driver for the Cirrus EP93xx SPI controller found
in EP93xx chips.Signed-off-by: Mika Westerberg
Signed-off-by: H Hartley Sweeten
Acked-by: H Hartley Sweeten
Signed-off-by: Grant Likely
21 Jan, 2010
3 commits
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Adds a memory-mapped I/O dw_spi platform device.
Signed-off-by: Jean-Hugues Deschenes
Signed-off-by: Grant Likely -
Add support for the QSPI controller found some on Freescale/Motorola
Coldfire MCUs.Full duplex, active high cs, spi modes 0-3 and word sizes 8-16 bits are
supported. The hardware drives the MISO, MOSI and SCLK lines, but the chip
selects are managed via GPIO and must be configured by the board code.The QSPI controller has an 80 byte buffer which allows us to transfer up to 16
words at a time. For transfers longer than 16 words, we split the buffer in
half so we can update in one half while the controller is operating on the
other half. Interrupt latencies then ultimately limits our sustained thru-put
to something less than half the maximum speed supported by the part.Signed-off-by: Steven King
Signed-off-by: Grant Likely -
This patch adds support for a SPI master driver for the
DaVinci series of SOCsSigned-off-by: Sandeep Paulraj
Signed-off-by: Mark A. Greer
Signed-off-by: Philby John
Signed-off-by: Sudhakar Rajashekhara
Signed-off-by: Kevin Hilman
Signed-off-by: Grant Likely
17 Dec, 2009
3 commits
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Each SPI controller has exactly one CS line and as such doesn't
provide for multi-cs. We implement a workaround to support
multi-cs by _not_ configuring the mux'ed CS pin for each SPI
controller. The CS mechanism is assumed to be fully machine
specific - the driver doesn't even assume some GPIO pin is used
to control the CS.The driver selects between DMA and POLLING mode depending upon
the xfer size - DMA mode for xfers bigger than FIFO size, POLLING
mode otherwise.The driver has been designed to be capable of running SoCs since
s3c64xx and till date, for that reason some of the register fields
have been passed via, SoC specific, platform data.Signed-off-by: Jassi Brar
Signed-off-by: Grant Likely -
Add pseudo-DMA by FIQ to the S3C24XX SPI driver. This allows the driver
to get DMA-like performance where there are either no free DMA channels or
when doing transfers that required both TX and RX data paths.Since this patch requires the addition of an assembly file to hold the FIQ
code, we rename the module (instead of adding a rename of the .c file to
this patch). We expect most users are loading this via udev and thus
there should be no change to the userland configuration.Signed-off-by: Ben Dooks
Signed-off-by: Simtec Linux Team
Cc: David Brownell
Signed-off-by: Andrew Morton
Signed-off-by: Grant Likely -
Driver for the Designware SPI core, it supports multipul interfaces like
PCI/APB etc. User can use "dw_apb_ssi_db.pdf" from Synopsys as HW
datasheet.[randy.dunlap@oracle.com: fix build]
[akpm@linux-foundation.org: build fix]
Signed-off-by: Feng Tang
Cc: David Brownell
Signed-off-by: Randy Dunlap
Signed-off-by: Andrew Morton
Signed-off-by: Grant Likely
13 Dec, 2009
3 commits
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This change adds the OMAP SPI 100k driver created by
Fabrice Crohas . This SPI bus is found on
OMAP7xx-series smartphones, and for many, the touchscreen is
attached to this bus.The lion's share of the work was done by Fabrice on this driver --
I am merely porting it from the Linwizard project on his behalf.Signed-off-by: Cory Maccarrone
Signed-off-by: Grant Likely -
Signed-off-by: Wan ZongShun
Signed-off-by: Grant Likely -
This patch is V2 of SPI Master support for the SuperH MSIOF.
Full duplex, spi mode 0-3, active high cs, 3-wire and lsb
first should all be supported, but the driver has so far
only been tested with "mmc_spi".The MSIOF hardware comes with 32-bit FIFOs for receive and
transmit, and this driver simply breaks the SPI messages
into FIFO-sized chunks. The MSIOF hardware manages the pins
for clock, receive and transmit (sck/miso/mosi), but the chip
select pin is managed by software and must be configured as
a regular GPIO pin by the board code.Performance wise there is still room for improvement, but
on a Ecovec board with the built-in sh7724 MSIOF0 this driver
gets Mini-sd read speeds of about half a megabyte per second.Future work include better clock setup and merging of 8-bit
transfers into 32-bit words to reduce interrupt load and
improve throughput.Signed-off-by: Magnus Damm
Signed-off-by: Grant Likely
09 Dec, 2009
2 commits
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This patch adds in a platform device driver using the xilinx_spi common module.
Tested-by: John Linn
Signed-off-by: Richard Röjfors
Signed-off-by: Grant Likely -
This patch splits the xilinx_spi driver into a generic part and a
OF driver part.The reason for this is to later add in a platform driver as well.
Tested-by: John Linn
Signed-off-by: Richard Röjfors
Signed-off-by: Grant Likely
05 Nov, 2009
1 commit
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Adds support for the dedicated SPI device on the Freescale MPC5200(b)
SoC.Signed-off-by: Grant Likely
02 Oct, 2009
1 commit
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This makes the filename match the Kconfig symbol and the driver name.
Signed-off-by: Uwe Kleine-König
Cc: Sascha Hauer
Cc: David Brownell
Cc: Guennadi Liakhovetski
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
23 Sep, 2009
4 commits
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Add SPI driver for Freescale STMP 3xxx-based boards
[dbrownell@users.sourceforge.net: cleanup sequence, spi_unregister_master]
Signed-off-by: dmitry pervushin
Signed-off-by: David Brownell
Cc: Kumar Gala
Cc: Timur Tabi
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
This driver has been tested on i.MX1/i.MX27/i.MX35 with an AT25 type
EEPROM and on i.MX27/i.MX31 with a Freescale MC13783 PMIC.Signed-off-by: Sascha Hauer
Tested-by: Guennadi Liakhovetski
Acked-by: David Brownell
Cc: Andrea Paterniani
Cc: Russell King
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
This adds a SPI driver for the SPI controller found in the IBM/AMCC
4xx PowerPC's.Signed-off-by: Stefan Roese
Signed-off-by: Wolfgang Ocker
Acked-by: Josh Boyer
Signed-off-by: Steven A. Falco
Signed-off-by: David Brownell
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
This driver is in a non working state at the moment and will be replaced
by a bitbang driver which can also handle the newer i.MX variantsSigned-off-by: Sascha Hauer
Cc: Guennadi Liakhovetski
Acked-by: David Brownell
Acked-by: Andrea Paterniani
Cc: Russell King
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
20 Jun, 2009
1 commit
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Since we renamed the file, we might want to rename the file internals too.
Though we don't bother with changing platform driver name and platform
module alias. The stuff is legacy and hopefully we'll remove it soon.Suggested-by: Kumar Gala
Signed-off-by: Anton Vorontsov
Cc: David Brownell
Cc: Benjamin Herrenschmidt
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
