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2012-12-19spi: fix tegra SPI binding examplesAllen Martin2-2/+2
Fix name of slink binding and address of sflash example to make it self consistent. Signed-off-by: Allen Martin <amartin@nvidia.com> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2012-12-17spi/atmel: add DT supportJean-Christophe PLAGNIOL-VILLARD1-0/+26
Use the newly introduce cs-gpios dt support on atmel. We do not use the hardware cs as it's wired and has bugs and limitations. As the controller believes that only active-low devices/systems exists. Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2012-12-07spi: Add support for specifying 3-wire mode via device treeLars-Peter Clausen1-0/+2
This patch allows to specify that a SPI device is connected in 3-wire mode via device tree. Signed-off-by: Lars-Peter Clausen <lars@metafoo.de> Acked-by: Rob Herring <rob.herring@calxeda.com> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2012-12-06Merge branch 'spi-next' from git://git.kernel.org/pub/scm/linux/kernel/git/broonie/misc.gitGrant Likely3-1/+55
Pull in the changes Mark has queued up for SPI
2012-11-21of_spi: add generic binding support to specify cs gpioJean-Christophe PLAGNIOL-VILLARD1-0/+20
This will allow to use gpio for chip select with no modification in the driver binding When use the cs-gpios, the gpio number will be passed via the cs_gpio field and the number of chip select will automatically increased with max(hw cs, gpio cs). So if for example the controller has 2 CS lines, and the cs-gpios property looks like this: cs-gpios = <&gpio1 0 0> <0> <&gpio1 1 0> <&gpio1 2 0>; Then it should be configured so that num_chipselect = 4 with the following mapping: cs0 : &gpio1 0 0 cs1 : native cs2 : &gpio1 1 0 cs3 : &gpio1 2 0 Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> Cc: devicetree-discuss@lists.ozlabs.org Cc: spi-devel-general@lists.sourceforge.net Signed-off-by: Richard Genoud <richard.genoud@gmail.com> [grant.likely: fixed up type of cs count so min() can do type checking] Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2012-11-14Merge branch 'spi-mcspi' into spi-nextMark Brown1-3/+3
2012-11-14spi/omap: fix D0/D1 direction confusionDaniel Mack1-3/+3
0384e90b8 ("spi/mcspi: allow configuration of pin directions") did what it claimed to do the wrong way around. D0/D1 is configured as output by *clearing* the bits in the conf registers, hence also breaking the former default behaviour. Fix this before that change is merged to mainline. Signed-off-by: Daniel Mack <zonque@gmail.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-11-14Merge branch 'spi-tegra' into spi-nextMark Brown1-0/+26
2012-11-14spi: tegra: add spi driver for sflash controllerLaxman Dewangan1-0/+26
NVIDIA's Tegra20 have the SPI (SFLASH) controller to interface with spi flash device which is used for system boot. Add the spi driver for this controller. Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com> Acked-by: Stephen Warren <swarren@nvidia.com> Tested-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-10-30Merge branch 'spi-tegra' into spi-nextMark Brown1-0/+26
2012-10-30spi: tegra: add spi driver for SLINK controllerLaxman Dewangan1-0/+26
Tegra20/Tegra30 supports the spi interface through its SLINK controller. Add spi driver for SLINK controller. Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com> Reviewed-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-10-17spi/mcspi: allow configuration of pin directionsDaniel Mack1-1/+3
Allow D0 to be an input and D1 to be an output, configurable via platform data and a new DT property. Based on a patch from Matus Ujhelyi <matus.ujhelyi@streamunlimited.com> Signed-off-by: Daniel Mack <zonque@gmail.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-10-09Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linusLinus Torvalds1-0/+33
Pull MIPS update from Ralf Baechle: "This is the MIPS update for 3.7. A fair chunk of them are platform updates to the Cavium Octeon SOC (which involves machine generated header files of considerable size), Atheros ATH79xx, RMI aka Netlogic aka Broadcom XLP, Broadcom BCM63xx platforms. Support for the commercial MIPS simulator MIPSsim has been removed as MIPS Technologies is shifting away from this product and Qemu is offering various more powerful platforms. The generic MIPS code can now also probe for no-execute / write-only TLB features implemented without the full SmartMIPS extension as permitted by the latest MIPS processor architecture. Lots of small changes to generic code." * 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus: (78 commits) MIPS: ath79: Fix CPU/DDR frequency calculation for SRIF PLLs MIPS: ath79: use correct fractional dividers for {CPU,DDR}_PLL on AR934x MIPS: BCM63XX: Properly handle mac address octet overflow MIPS: Kconfig: Avoid build errors by hiding USE_OF from the user. MIPS: Replace `-' in defconfig filename wth `_' for consistency. MIPS: Wire kcmp syscall. MIPS: MIPSsim: Remove the MIPSsim platform. MIPS: NOTIFY_RESUME is not needed in TIF masks MIPS: Merge the identical "return from syscall" per-ABI code MIPS: Unobfuscate _TIF..._MASK MIPS: Prevent hitting do_notify_resume() with !user_mode(regs). MIPS: Replace 'kernel_uses_smartmips_rixi' with 'cpu_has_rixi'. MIPS: Add base architecture support for RI and XI. MIPS: Optimise TLB handlers for MIPS32/64 R2 cores. MIPS: uasm: Add INS and EXT instructions. MIPS: Avoid pipeline stalls on some MIPS32R2 cores. MIPS: Make VPE count to be one-based. MIPS: Add new end of interrupt functionality for GIC. MIPS: Add EIC support for GIC. MIPS: Code clean-ups for the GIC. ...
2012-09-28Merge branches 'spi-drivers' and 'spi-mxs' into spi-nextMark Brown5-0/+99
2012-09-25spi/pl022: Devicetree support w/o platform dataRoland Stigge1-0/+7
Even with devicetree support, we needed platform data to provide some data, leading to mixed device tree and platform data. This patch makes it possible to provide all that information via device tree. Now, the data must be provided via platform data _or_ device tree completely. Only in case of DMA where a callback specification is necessary (dma_filter()), platform data is the only option. Signed-off-by: Roland Stigge <stigge@antcom.de> Acked-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-09-06spi/mxs: Make the SPI block clock speed configurable via DTMarek Vasut1-0/+4
Add "clock-frequency" property, which allows configuring the SPI block's base speed. Signed-off-by: Marek Vasut <marex@denx.de> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-09-06spi: spi-gpio: Add DT bindingsDaniel Mack1-0/+29
This patch adds DT bindings to the spi-gpio driver and some documentation about how to use it. Signed-off-by: Daniel Mack <zonque@gmail.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-08-22spi: Add SPI master controller for OCTEON SOCs.David Daney1-0/+33
Add the driver, link it into the kbuild system and provide device tree binding documentation. Signed-off-by: David Daney <david.daney@cavium.com> Acked-by: Grant Likely <grant.likely@secretlab.ca> Patchwork: http://patchwork.linux-mips.org/patch/4292/ Signed-off-by: John Crispin <blogic@openwrt.org>
2012-08-22spi/dt: DT bindings documentation: "num-cs" property for SPI controllersRoland Stigge1-0/+3
Several SPI controller drivers have defined differently named properties for the number of chip selects. Now adding "num-cs" as a reference name for new bindings. Signed-off-by: Roland Stigge <stigge@antcom.de> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-08-22spi/pl022: Add devicetree supportRoland Stigge1-0/+15
This patch adds device tree support to the spi-pl022 driver. Based on the initial patch by Alexandre Pereira da Silva <aletes.xgr@gmail.com> Signed-off-by: Roland Stigge <stigge@antcom.de> Acked-by: Alexandre Pereira da Silva <aletes.xgr@gmail.com> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-08-22spi: Master driver for NXP SC18IS602/603Guenter Roeck1-0/+23
This driver adds support for NXP SC18IS602/603 I2C to SPI bus bridge. Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-08-17spi/mxs: Add SSP/SPI device tree documentationMarek Vasut1-0/+18
Signed-off-by: Marek Vasut <marex@denx.de> Acked-by: Chris Ball <cjb@laptop.org> Acked-by: Shawn Guo <shawn.guo@linaro.org> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-07-26Merge tag 'spi-3.6' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/miscLinus Torvalds1-0/+19
Pull spi updates from Mark Brown: "Since Grant is even more specacularly busy than usual for the time being I've been collecting SPI patches for him for this release - probably things will revert back to Grant before the next release. There's nothing too exciting here, mostly it's simple driver specific stuff: - Add spi: to the modaliases of SPI devices to provide namespacing. - A driver for AD-FMCOMMS1-EBZ. - DT binding for Orion. - Fixes and cleanups for i.MX, PL0022, OMAP and bitbang drivers. There may be a few more fixes I've missed, people keep sending me new things." * tag 'spi-3.6' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/misc: spi/orion: remove uneeded spi_info spi/bcm63xx: fix clock configuration selection spi/orion: add device tree binding spi/omap2: mark omap2_mcspi_master_setup as __devinit spi: omap2-mcspi: Fix the below warning spi: Add AD-FMCOMMS1-EBZ I2C-SPI bridge driver spi/imx: use gpio_is_valid to determine if a gpio is valid spi/imx: remove redundant config.speed_hz setting spi/gpio: start with CS non-active spi: tegra: use dmaengine based dma driver spi/pl022: cleanup pl022 header documentation spi/pl022: enable runtime PM spi/pl022: delete DB5500 support spi/pl022: disable port when unused spi: Add "spi:" prefix to modalias attribute of spi devices
2012-07-23spi/orion: add device tree bindingAndrew Lunn1-0/+19
Signed-off-by: Michael Walle <michael@walle.cc> Signed-off-by: Andrew Lunn <andrew@lunn.ch> Acked-by: Jason Cooper <jason@lakedaemon.net> Acked-by: Sebastian Hesselbarth <sebastian.hesselbarth@googlemail.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-07-17ARM: EXYNOS: mark the DMA channel binding for SPI as preliminaryArnd Bergmann1-0/+3
Bindings for DMA channels are still under discussion and will change once this has been resolved. Therefore we mark them the newly added ones as preliminary. Let's hope nobody starts relying on them... Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2012-07-17Merge branch 'next/dt-samsung' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung into next/dtArnd Bergmann1-0/+113
From Kukjin Kim <kgene.kim@samsung.com>: It is for supporting spi dt for exynos4210 and exynos5250, and got the ack from Grant Likely for spi driver. Note: Since this is including spi driver changes, so it was made based on next/devel-dma-ops which touches same file, Samsung spi driver for avoiding bad conflicts. * 'next/dt-samsung' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung: ARM: dts: Add nodes for spi controllers for SAMSUNG EXYNOS5 platforms ARM: EXYNOS: Enable platform support for SPI controllers for EXYNOS5 ARM: EXYNOS: Add spi clock support for EXYNOS5 ARM: dts: Add nodes for spi controllers for SAMSUNG EXYNOS4 platforms ARM: EXYNOS: Enable platform support for SPI controllers for EXYNOX4 ARM: EXYNOS: Fix the incorrect hierarchy of spi controller bus clock ARM: EXYNOS: Add device tree node for EXYNOS4 interrupt combiner controller spi: s3c64xx: add device tree support spi: s3c64xx: Remove the 'set_level' callback from controller data ARM: SAMSUNG: Modify s3c64xx_spi{0|1|2}_set_platdata function ARM: SAMSUNG: Remove pdev pointer parameter from spi gpio setup functions spi: s3c64xx: move controller information into driver data spi: s3c64xx: remove unused S3C64XX_SPI_ST_TRLCNTZ macro ARM: S3C64XX: Add a new dma request id for device tree based dma channel lookup Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2012-07-13spi: s3c64xx: add device tree supportThomas Abraham1-0/+113
Add support for device based discovery. Signed-off-by: Thomas Abraham <thomas.abraham@linaro.org> Acked-by: Jaswinder Singh <jaswinder.singh@linaro.org> Acked-by: Grant Likely <grant.likely@secretlab.ca> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2012-07-12Merge tag 'v3.5-rc6' into next/dtArnd Bergmann1-2/+2
New pull requests are based on Linux 3.5-rc6
2012-06-13dt: fsl-imx-cspi.txt: Fix comment about GPIOs used for chip selectsFabio Estevam1-2/+2
The gpio numbers does not match the comment. Fix the comments for GPIOs used for chip selects. Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com> Signed-off-by: Rob Herring <rob.herring@calxeda.com>
2012-06-11dt: name all Tegra binding docs consistentlyStephen Warren1-0/+0
Rename all Tegra binding documentation according to the first or primary compatible value they describe. This provides a clear naming scheme for the files, and prevents any naming conflicts should future SoC versions require their own binding. Signed-off-by: Stephen Warren <swarren@nvidia.com>
2012-02-15spi/omap: Add DT support to McSPI driverBenoit Cousson1-0/+20
Add device tree support to the OMAP2+ McSPI driver. Add the bindings documentation. Based on original code from Rajendra. Signed-off-by: Benoit Cousson <b-cousson@ti.com> Cc: Grant Likely <grant.likely@secretlab.ca> Cc: Rajendra Nayak <rnayak@ti.com> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2011-10-05devicetree: Add ARM pl022 spi controller binding docRob Herring1-0/+12
Add binding documentation for ARM's Primecell PL022 SPI controller. Signed-off-by: Rob Herring <rob.herring@calxeda.com>
2011-07-14spi/imx: add device tree probe supportShawn Guo1-0/+22
It adds device tree probe support for spi-imx driver. Signed-off-by: Shawn Guo <shawn.guo@linaro.org> Cc: Grant Likely <grant.likely@secretlab.ca> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2011-07-05spi/tegra: Use engineering names in DT compatible propertyStephen Warren1-1/+1
Engineering names are more stable than marketing names. Hence, use them for Device Tree compatible properties instead. Signed-off-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2011-06-15gpio/tegra: Move Tegra gpio driver to drivers/gpioGrant Likely1-0/+5
As part of the gpio driver consolidation, this patch moves the Tegra driver into drivers/gpio Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2011-03-12Merge commit 'v2.6.38-rc8' into spi/nextGrant Likely2-0/+110
Conflicts: drivers/spi/pxa2xx_spi_pci.c
2011-02-22spi: New driver for Altera SPIThomas Chou1-0/+4
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 <thomas@wytron.com.tw> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2011-02-22spi: add OpenCores tiny SPI driverThomas Chou1-0/+12
This patch adds support of OpenCores tiny SPI driver. http://opencores.org/project,tiny_spi Signed-off-by: Thomas Chou <thomas@wytron.com.tw> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2011-01-31dt: Move device tree documentation out of powerpc directoryGrant Likely2-0/+110
The device tree is used by more than just PowerPC. Make the documentation directory available to all. v2: reorganized files while moving to create arch and driver specific directories. Signed-off-by: Grant Likely <grant.likely@secretlab.ca> Acked-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
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