summaryrefslogtreecommitdiffstats
path: root/drivers/spi
Commit message (Collapse)AuthorAgeFilesLines
* Merge tag 'soc2' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-socLinus Torvalds2012-05-261-1/+1
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull arm-soc: soc specific changes (part 2) from Olof Johansson: "This adds support for the spear13xx platform, which has first been under review a long time ago and finally been completed after generic spear work has gone into the clock, dt and pinctrl branches. Also a number of updates for the samsung socs are part of this branch." Fix up trivial conflicts in drivers/gpio/gpio-samsung.c that look much worse than they are: the exonys5 init code was refactored in commit fd454997d687 ("gpio: samsung: refactor gpiolib init for exynos4/5"), and then commit f10590c9836c ("ARM: EXYNOS: add GPC4 bank instance") added a new gpio chip define and did tiny updates to the init code. So the conflict diff looks like hell, but it's actually a fairly simple change. * tag 'soc2' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (34 commits) ARM: exynos: fix building with CONFIG_OF disabled ARM: EXYNOS: Add AUXDATA for i2c controllers ARM: dts: Update device tree source files for EXYNOS5250 ARM: EXYNOS: Add device tree support for interrupt combiner ARM: EXYNOS: Add irq_domain support for interrupt combiner ARM: EXYNOS: Remove a new bus_type instance for EXYNOS5 ARM: EXYNOS: update irqs for EXYNOS5250 SoC ARM: EXYNOS: Add pre-divider and fout mux clocks for bpll and mpll ARM: EXYNOS: add GPC4 bank instance ARM: EXYNOS: Redefine IRQ_MCT_L0,1 definition ARM: EXYNOS: Modify the GIC physical address for static io-mapping ARM: EXYNOS: Add watchdog timer clock instance pinctrl: SPEAr1310: Fix pin numbers for clcd_high_res SPEAr: Update MAINTAINERS and Documentation SPEAr13xx: Add defconfig SPEAr13xx: Add compilation support SPEAr13xx: Add dts and dtsi files pinctrl: Add SPEAr13xx pinctrl drivers pinctrl: SPEAr: Create macro for declaring GPIO PINS SPEAr13xx: Add common clock framework support ...
| * Merge branch 'next/devel-s3c24xx-hsspi' into next/devel-samsungKukjin Kim2012-05-141-1/+1
| |\
| | * spi/s3c64xx: Allow usage for ARCH_S3C24XXHeiko Stuebner2012-04-241-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Newer SoCs from the S3C24XX line, namely S3C2416/2443/2450 contain hsspi-controllers compatible with the s3c64xx type. The previous patches enabled platform support for it, so make the driver also usable for the S3C24xx architecture. Signed-off-by: Heiko Stuebner <heiko@sntech.de> Acked-by: Grant Likely <grant.likely@secretlab.ca> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
* | | Merge tag 'clock' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-socLinus Torvalds2012-05-262-18/+42
|\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull arm-soc clock driver changes from Olof Johansson: "The new clock subsystem was merged in linux-3.4 without any users, this now moves the first three platforms over to it: imx, mxs and spear. The series also contains the changes for the clock subsystem itself, since Mike preferred to have it together with the platforms that require these changes, in order to avoid interdependencies and conflicts." Fix up trivial conflicts in arch/arm/mach-kirkwood/common.c (code removed in one branch, added OF support in another) and drivers/dma/imx-sdma.c (independent changes next to each other). * tag 'clock' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (97 commits) clk: Fix CLK_SET_RATE_GATE flag validation in clk_set_rate(). clk: Provide dummy clk_unregister() SPEAr: Update defconfigs SPEAr: Add SMI NOR partition info in dts files SPEAr: Switch to common clock framework SPEAr: Call clk_prepare() before calling clk_enable SPEAr: clk: Add General Purpose Timer Synthesizer clock SPEAr: clk: Add Fractional Synthesizer clock SPEAr: clk: Add Auxiliary Synthesizer clock SPEAr: clk: Add VCO-PLL Synthesizer clock SPEAr: Add DT bindings for SPEAr's timer ARM i.MX: remove now unused clock files ARM: i.MX6: implement clocks using common clock framework ARM i.MX35: implement clocks using common clock framework ARM i.MX5: implement clocks using common clock framework ARM: Kirkwood: Replace clock gating ARM: Orion: Audio: Add clk/clkdev support ARM: Orion: PCIE: Add support for clk ARM: Orion: XOR: Add support for clk ARM: Orion: CESA: Add support for clk ...
| * \ \ Merge branch 'clk-next' of git://git.linaro.org/people/mturquette/linux into ↵Arnd Bergmann2012-05-161-7/+23
| |\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | next/clock * 'clk-next' of git://git.linaro.org/people/mturquette/linux: clk: Fix CLK_SET_RATE_GATE flag validation in clk_set_rate(). clk: Provide dummy clk_unregister() ARM: Kirkwood: Replace clock gating ARM: Orion: Audio: Add clk/clkdev support ARM: Orion: PCIE: Add support for clk ARM: Orion: XOR: Add support for clk ARM: Orion: CESA: Add support for clk ARM: Orion: SDIO: Add support for clk. ARM: Orion: NAND: Add support for clk, if there is one. ARM: Orion: EHCI: Add support for enabling clocks ARM: Orion: SATA: Add per channel clk/clkdev support. ARM: Orion: UART: Get the clock rate via clk_get_rate(). ARM: Orion: WDT: Add clk/clkdev support ARM: Orion: Eth: Add clk/clkdev support. ARM: Orion: SPI: Add clk/clkdev support. ARM: Orion: Add clocks using the generic clk infrastructure. Signed-off-by: Arnd Bergmann <arnd@arndb.de>
| | * | | ARM: Orion: SPI: Add clk/clkdev support.Andrew Lunn2012-05-081-7/+23
| | | |/ | | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | Remove now redundant tclk from SPI platform data. This makes the platform data empty, so remove it. Signed-off-by: Andrew Lunn <andrew@lunn.ch> Tested-by: Jamie Lentin <jm@lentin.co.uk> Signed-off-by: Mike Turquette <mturquette@linaro.org>
| * | | Merge branch 'imx/pinctrl' into imx/clockArnd Bergmann2012-05-148-127/+165
| |\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Conflicts: drivers/mmc/host/sdhci-esdhc-imx.c drivers/net/ethernet/freescale/fec.c drivers/spi/spi-imx.c drivers/tty/serial/imx.c This resolves dependencies between the pinctrl and clock changes in imx. Signed-off-by: Arnd Bergmann <arnd@arndb.de>
| * | | | spi i.MX: do not depend on grouped clocksSascha Hauer2012-04-251-11/+19
| | |/ / | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | the current i.MX clock support groups together unrelated clocks to a single clock which is then used by the driver. This can't be accomplished with the generic clock framework so we instead request the individual clocks in the driver. For i.MX there are generally three different clocks: ipg: bus clock (needed to access registers) ahb: dma relevant clock, sometimes referred to as hclk in the datasheet per: bit clock, pixel clock This patch changes the driver to request the individual clocks. Currently all clk_get will get the same clock until the SoCs are converted to the generic clock framework Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* | | | Merge tag 'spi-for-linus' of git://git.secretlab.ca/git/linux-2.6Linus Torvalds2012-05-2416-444/+705
|\ \ \ \ | |_|/ / |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull SPI changes from Grant Likely: "Bug fixes and new features for SPI device drivers. Also move device tree support code out of drivers/of and into drivers/spi/spi.c where it makes more sense." * tag 'spi-for-linus' of git://git.secretlab.ca/git/linux-2.6: spi: By default setup spi_masters with 1 chipselect and dynamics bus number SPI: PRIMA2: use the newest APIs of PINCTRL to fix compiling errors spi/spi-fsl-spi: reference correct pdata in fsl_spi_cs_control spi: refactor spi-coldfire-qspi to use SPI queue framework. spi/omap2-mcspi: convert to the pump message infrastructure spi/rspi: add dmaengine support spi/topcliff: use correct __devexit_p annotation spi: Dont call prepare/unprepare transfer if not populated spi/ep93xx: clean probe/remove routines spi/devicetree: Move devicetree support code into spi directory spi: use module_pci_driver spi/omap2-mcspi: Trivial optimisation spi: omap2-mcspi: add support for pm_runtime autosuspend spi/omap: Remove bus_num usage for instance index OMAP : SPI : use devm_* functions spi: omap2-mcspi: convert to module_platform_driver spi: omap2-mcspi: make it behave as a module
| * | | spi: By default setup spi_masters with 1 chipselect and dynamics bus numberGrant Likely2012-05-196-13/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Trivial simplification. Instead of requiring spi master drivers to always set the bus number (even when a dynamic number is desired), this patch modifies spi_alloc_master() to initialize num_chipselect to 1 (because there will always be at least one CS) and bus_num to -1 for dynamic allocation. This simplifies the code needed to be written for drivers. Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
| * | | SPI: PRIMA2: use the newest APIs of PINCTRL to fix compiling errorsBarry Song2012-05-191-12/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fix the compiling errors: drivers/spi/spi-sirf.c: In function 'spi_sirfsoc_probe': drivers/spi/spi-sirf.c:563: error: implicit declaration of function 'pinmux_get' drivers/spi/spi-sirf.c:563: warning: assignment makes pointer from integer without a cast drivers/spi/spi-sirf.c:568: error: implicit declaration of function 'pinmux_enable' drivers/spi/spi-sirf.c:602: error: implicit declaration of function 'pinmux_disable' drivers/spi/spi-sirf.c:603: error: implicit declaration of function 'pinmux_put' make[3]: *** [drivers/spi/spi-sirf.o] Error 1 Signed-off-by: Barry Song <Baohua.Song@csr.com> Cc: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Acked-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
| * | | spi/spi-fsl-spi: reference correct pdata in fsl_spi_cs_controlHerton Ronaldo Krzesinski2012-05-191-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit 178db7d3, "spi: Fix device unregistration when unregistering the bus master", changed spi device initialization of dev.parent pointer to be the master's device pointer instead of his parent. This introduced a bug in spi-fsl-spi, since its usage of spi device pointer was not updated accordingly. This was later fixed by commit 5039a86, "spi/mpc83xx: fix NULL pdata dereference bug", but it missed another spot on fsl_spi_cs_control function where we also need to update usage of spi device pointer. This change address that. Cc: stable@vger.kernel.org Signed-off-by: Herton Ronaldo Krzesinski <herton.krzesinski@canonical.com> Acked-by: Joakim Tjernlund <Joakim.Tjernlund@transmode.se> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
| * | | spi: refactor spi-coldfire-qspi to use SPI queue framework.Steven King2012-05-191-141/+114
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Use the new SPI queue framework; remove use of workqueue, replace mcfqspi_transfer with mcfqspi_transfer_one_message, add mcfqspi_prepare_transfer_hw and mcfqspi_unprepare_transfer_hw, update power management routines. Signed-off-by: Steven King <sfking@fdwdc.com> Acked-by: Greg Ungerer <gerg@snapgear.com> Acked-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
| * | | spi/omap2-mcspi: convert to the pump message infrastructureShubhrajyoti D2012-05-191-133/+110
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch converts the OMAP SPI driver to use the SPI infrastructure pump message queue.Also fixes the below warning. master is unqueued, this is deprecated Signed-off-by: Shubhrajyoti D <shubhrajyoti@ti.com> Acked-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
| * | | spi/rspi: add dmaengine supportShimoda, Yoshihiro2012-05-191-6/+314
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch adds dmaengine supporting using sh_dma driver. The module receives data by DMAC, it also needs TX DMAC to generate SPI's clocks. Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
| * | | spi/topcliff: use correct __devexit_p annotationArnd Bergmann2012-05-191-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | __devexit functions are discarded when CONFIG_HOTPLUG is not set, so the symbol needs to be referenced carefully. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
| * | | spi: Dont call prepare/unprepare transfer if not populatedShubhrajyoti D2012-05-101-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently the prepare/unprepare transfer are called unconditionally. The assumption is that every driver using the spi core queue infrastructure has to populate the prepare and unprepare functions. This encourages drivers to populate empty functions to prevent crashing. This patch prevents the call to prepare/unprepare if not populated. Signed-off-by: Shubhrajyoti D <shubhrajyoti@ti.com> Acked-by: Linus Walleij <linus.walleij@linaro.org> [grant.likely: fix whitespace defect] Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
| * | | spi/ep93xx: clean probe/remove routinesHannu Heikkinen2012-05-091-27/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Use devm_* functions for managing devres resources. Also use local variable irq and remove irq variable from struct ep93xx_spi, as it is needed only in probe routine. Acked-by: Mika Westerberg <mika.westerberg@iki.fi> Acked-by: H Hartley Sweeten <hsweeten@visionengravers.com> Signed-off-by: Hannu Heikkinen <hannuxx@iki.fi> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
| * | | Merge tag 'v3.4-rc6' into spi/nextGrant Likely2012-05-0910-137/+171
| |\ \ \ | | | |/ | | |/| | | | | Linux 3.4-rc6
| * | | spi/devicetree: Move devicetree support code into spi directoryGrant Likely2012-04-134-4/+92
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The SPI device tree support code isn't shared by any other subsystem. It can be moved into the core drivers/spi directory and the exported symbol can be removed. Signed-off-by: Grant Likely <grant.likely@secretlab.ca> Cc: Rob Herring <rob.herring@calxeda.com>
| * | | spi: use module_pci_driverAxel Lin2012-04-102-23/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch converts the drivers in drivers/spi/* to use module_pci_driver() macro which makes the code smaller and a bit simpler. Signed-off-by: Axel Lin <axel.lin@gmail.com> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
| * | | spi/omap2-mcspi: Trivial optimisationShubhrajyoti D2012-04-101-4/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Trivial optimisation of tmp variable by directly writing the value to the register. Cc: Tarun Kanti DebBarma <tarun.kanti@ti.com> Signed-off-by: Shubhrajyoti D <shubhrajyoti@ti.com>
| * | | spi: omap2-mcspi: add support for pm_runtime autosuspendShubhrajyoti D2012-04-101-1/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Adds support for configuring the omap2-mcspi driver use autosuspend for runtime power management. This can reduce the latency in starting an spi transfer by not suspending the device immediately following completion of a transfer. If another transfer then takes place before the autosuspend timeout (2 secs), the call to resume the device can return immediately saving some save/ restore cycles. Acked-by: Govindraj.R <govindraj.raja@ti.com> Signed-off-by: Shubhrajyoti D <shubhrajyoti@ti.com>
| * | | spi/omap: Remove bus_num usage for instance indexBenoit Cousson2012-04-101-41/+34
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | bus_num was used to reference the mcspi controller instance in a fixed array. Remove this array and store this information directly inside drvdata structure. bus_num is now just set if the pdev->id is present or with -1 for dynamic allocation by SPI core, but the driver does not access it anymore. Clean some bad comments format, and remove un-needed space. Signed-off-by: Benoit Cousson <b-cousson@ti.com> [Cleanup the OMAP2_MCSPI_MAX_CTRL macro as it is not needed anymore] Signed-off-by: Shubhrajyoti D <shubhrajyoti@ti.com>
| * | | Merge branch 'spi' of git://gitorious.org/linus-tree/linus-tree into spi/nextGrant Likely2012-04-101-37/+9
| |\ \ \
| | * | | OMAP : SPI : use devm_* functionsShubhrajyoti D2012-03-191-20/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The various devm_* functions allocate memory that is released when a driver detaches. This patch uses devm_request_and_ioremap to request memory in probe function. Since the freeing is not needed the calls are deleted from remove function.Also use use devm_kzalloc for the cs memory allocation. Signed-off-by: Shubhrajyoti D <shubhrajyoti@ti.com>
| | * | | spi: omap2-mcspi: convert to module_platform_driverFelipe Balbi2012-03-191-14/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | this will delete a few lines of code, no functional changes. Signed-off-by: Felipe Balbi <balbi@ti.com> Signed-off-by: Shubhrajyoti D <shubhrajyoti@ti.com>
| | * | | spi: omap2-mcspi: make it behave as a moduleFelipe Balbi2012-03-191-4/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | move probe away from __init section and use platform_driver_register() instead of platform_driver_probe(). Signed-off-by: Felipe Balbi <balbi@ti.com> Signed-off-by: Shubhrajyoti D <shubhrajyoti@ti.com>
* | | | | spi/imx: adopt pinctrl supportShawn Guo2012-05-121-0/+8
| |_|/ / |/| | | | | | | | | | | | | | | | | | | | | | | Cc: spi-devel-general@lists.sourceforge.net Cc: Grant Likely <grant.likely@secretlab.ca> Signed-off-by: Shawn Guo <shawn.guo@linaro.org> Acked-by: Dong Aisheng <dong.aisheng@linaro.org>
* | | | spi/spi-bfin5xx: Fix flush of last bit after each spi transferScott Jiang2012-04-271-1/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch ensures that the last bit of a transfer gets correctly flushed out of the register. Signed-off-by: Scott Jiang <scott.jiang.linux@gmail.com> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
* | | | spi/spi-bfin5xx: fix reversed if condition in interrupt modeScott Jiang2012-04-271-4/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This condition is used to determine 8 bits or 16 and 32 bits transfer. Obviously it is reversed. Signed-off-by: Scott Jiang <scott.jiang.linux@gmail.com> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
* | | | spi/spi_bfin_sport: drop bits_per_word from client dataScott Jiang2012-04-271-6/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Since the member was dropped from the common Blackfin header, we need to stop using it in the SPORT driver too. Signed-off-by: Mike Frysinger <vapier@gentoo.org> Signed-off-by: Scott Jiang <scott.jiang.linux@gmail.com> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
* | | | spi/bfin_spi: drop bits_per_word from client dataScott Jiang2012-04-271-1/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | No other SPI controller has this field, and SPI clients should be setting this up in their own drivers. So drop it from the Blackfin controller to keep people from using it. Signed-off-by: Mike Frysinger <vapier@gentoo.org> Signed-off-by: Scott Jiang <scott.jiang.linux@gmail.com> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
* | | | spi/spi-bfin-sport: move word length setup to transfer handlerScott Jiang2012-04-271-4/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Each transfer may have its own bits per word. Signed-off-by: Scott Jiang <scott.jiang.linux@gmail.com> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
* | | | spi/bfin5xx: rename config macro name for bfin5xx spi controller driverScott Jiang2012-04-272-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | This controller is only for blackfin 5xx soc, so rename it to BFIN5XX Signed-off-by: Scott Jiang <scott.jiang.linux@gmail.com> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
* | | | spi/pl022: Allow request for higher frequency than maximum possibleViresh Kumar2012-04-271-2/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently, if we request for frequency greater than maximum possible, spi driver returns error. For example, if the spi block src frequency is 333/4 MHz, i.e. 83.33.. MHz, maximum frequency programmable would be src/2. Which would come around 41.6... It is difficult to pass frequency in these figures. We normally try to program in round figures, like 42 MHz and it should get programmed to <= requested_frequency, i.e. 41.6... For this to happen, we must not return error even if requested freq is higher than max possible. But should program it to max possible. Reported-by: Vinit Kamalaksha Shenoy <vinit.shenoy@st.com> Signed-off-by: Viresh Kumar <viresh.kumar@st.com> Acked-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
* | | | spi/bcm63xx: set master driver mode_bits.Florian Fainelli2012-04-271-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We were not properly advertising the MODE bits supported by this driver, fix that. Signed-off-by: Florian Fainelli <florian@openwrt.org> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
* | | | spi/bcm63xx: don't use the stopping stateFlorian Fainelli2012-04-271-11/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We do not need to use a flag to indicate if the master driver is stopping it is sufficient to perform spi master unregistering in the platform driver's remove function. Signed-off-by: Florian Fainelli <florian@openwrt.org> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
* | | | spi/bcm63xx: convert to the pump message infrastructureFlorian Fainelli2012-04-271-60/+89
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch converts the bcm63xx SPI driver to use the SPI infrastructure pump message queue. Since we were previously sleeping in the SPI driver's transfer() function (which is not allowed) this is now fixed as well. To complete that conversion a certain number of changes have been made: - the transfer len is split into multiple hardware transfers in case its size is bigger than the hardware FIFO size - the FIFO refill is no longer done in the interrupt context, which was a bad idea leading to quick interrupt handler re-entrancy Tested-by: Tanguy Bouzeloc <tanguy.bouzeloc@efixo.com> Signed-off-by: Florian Fainelli <florian@openwrt.org> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
* | | | spi/spi-ep93xx.c: use dma_transfer_direction instead of dma_data_directionH Hartley Sweeten2012-04-271-14/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | A new enum indicating the dma channel direction was introduced by: commit 49920bc66984a512f4bcc7735a61642cd0e4d6f2 dmaengine: add new enum dma_transfer_direction The following commit changed spi-ep93xx to use the new enum: commit a485df4b4404379786c4bdd258bc528b2617449d spi, serial: move to dma_transfer_direction In doing so a sparse warning was introduced: warning: mixing different enum types int enum dma_data_direction versus int enum dma_transfer_direction This is produced because the 'dir' passed in ep93xx_spi_dma_prepare is an enum dma_data_direction and is being used to set the dma_slave_config 'direction' which is now an enum dma_transfer_direction. Fix this by converting spi-ep93xx to use the new enum type in all places. Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Acked-by: Mika Westerberg <mika.westerberg@iki.fi> Acked-by: Vinod Koul <vinod.koul@intel.com> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
* | | | spi/pl022: Fix calculate_effective_freq()Viresh Kumar2012-04-271-6/+17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | calculate_effective_freq() was still not optimized and there were cases when it returned without error and with values of cpsr and scr as zero. Also, the variable named found is not used well. This patch targets to optimize and correct this routine. Tested for SPEAr. Signed-off-by: Viresh Kumar <viresh.kumar@st.com> Tested-by: Vinit Kamalaksha Shenoy <vinit.shenoy@st.com> Acked-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
* | | | spi/pl022: Fix range checking for bits per wordVinit Shenoy2012-04-171-16/+9
| |_|/ |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | pl022 ssp controller supports word lengths from 4 to 16 (or 32) bits. Currently implemented checks were incorrect. It has following check if (pl022->vendor->max_bpw >= 32) which must be checking for <=. Also error print message is incorrect, that prints "range is from 1 to 16". Fix both these issues. Signed-off-by: Vinit Shenoy <vinit.shenoy@st.com> Acked-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
* | | Merge branch 'fixes' of git://git.linaro.org/people/rmk/linux-armLinus Torvalds2012-04-151-2/+0
|\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull ARM fixes from Russell King: "Nothing too disasterous, the biggest thing being the removal of the regulator support for vcore in the AMBA driver; only one SoC was using this and it got broken during the last merge window, which then started causing problems for other people. Mutual agreement was reached for it to be removed." * 'fixes' of git://git.linaro.org/people/rmk/linux-arm: ARM: 7386/1: jump_label: fixup for rename to static_key ARM: 7384/1: ThumbEE: Disable userspace TEEHBR access for !CONFIG_ARM_THUMBEE ARM: 7382/1: mm: truncate memory banks to fit in 4GB space for classic MMU ARM: 7359/2: smp_twd: Only wait for reprogramming on active cpus ARM: 7383/1: nommu: populate vectors page from paging_init ARM: 7381/1: nommu: fix typo in mm/Kconfig ARM: 7380/1: DT: do not add a zero-sized memory property ARM: 7379/1: DT: fix atags_to_fdt() second call site ARM: 7366/3: amba: Remove AMBA level regulator support ARM: 7377/1: vic: re-read status register before dispatching each IRQ handler ARM: 7368/1: fault.c: correct how the tsk->[maj|min]_flt gets incremented
| * | | ARM: 7366/3: amba: Remove AMBA level regulator supportMark Brown2012-04-131-2/+0
| |/ / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The AMBA bus regulator support is being used to model on/off switches for power domains which isn't terribly idiomatic for modern kernels with the generic power domain code and creates integration problems on platforms which don't use regulators for their power domains as it's hard to tell the difference between a regulator that is needed but failed to be provided and one that isn't supposed to be there (though DT does make that easier). Platforms that wish to use the regulator API to manage their power domains can indirect via the power domain interface. This feature is only used with the vape supply of the db8500 PRCMU driver which supplies the UARTs and MMC controllers, none of which have support for managing vcore at runtime in mainline (only pl022 SPI controller does). Update that supply to have an always_on constraint until the power domain support for the system is updated so that it is enabled for these users, this is likely to have no impact on practical systems as probably at least one of these devices will be active and cause AMBA to hold the supply on anyway. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Acked-by: Linus Walleij <linus.walleij@linaro.org> Tested-by: Shawn Guo <shawn.guo@linaro.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* | | Merge tag 'spi-for-linus' of git://git.secretlab.ca/git/linux-2.6Linus Torvalds2012-04-133-8/+14
|\ \ \ | |/ / |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull SPI bug fixes from Grant Likely: "Miscellaneous driver bug fixes. No major changes in this branch." * tag 'spi-for-linus' of git://git.secretlab.ca/git/linux-2.6: spi/imx: prevent NULL pointer dereference in spi_imx_probe() spi/imx: mark base member in spi_imx_data as __iomem spi/mpc83xx: fix NULL pdata dereference bug spi/davinci: Fix DMA API usage in davinci spi/pL022: include types.h to remove compilation warnings
| * | spi/imx: prevent NULL pointer dereference in spi_imx_probe()Lothar Waßmann2012-04-101-3/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When no platform_data is present and either 'spi-num-chipselects' is not defined in the DT or 'cs-gpios' has less entries than 'spi-num-chipselects' specifies, the NULL platform_data pointer is being dereferenced. Signed-off-by: Lothar Waßmann <LW@KARO-electronics.de> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
| * | spi/imx: mark base member in spi_imx_data as __iomemUwe Kleine-König2012-03-301-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This fixes 36 sparse warnings like: drivers/spi/spi-imx.c:143:1: warning: incorrect type in argument 1 (different address spaces) drivers/spi/spi-imx.c:143:1: expected void const volatile [noderef] <asn:2>*<noident> drivers/spi/spi-imx.c:143:1: got void * Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
| * | spi/mpc83xx: fix NULL pdata dereference bugKenth Eriksson2012-03-301-1/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit 178db7d3, "spi: Fix device unregistration when unregistering the bus master", changed device initialization to be children of the bus master, not children of the bus masters parent device. The pdata pointer used in fsl_spi_chipselect must updated to reflect the changed initialization. Signed-off-by: Kenth Eriksson <kenth.eriksson@transmode.com> Acked-by: Joakim Tjernlund <Joakim.Tjernlund@transmode.se> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
| * | spi/davinci: Fix DMA API usage in davinciShubhrajyoti D2012-03-301-3/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | The driver uses NULL for dma_unmap_single instead of the struct device that the API expects. Signed-off-by: Shubhrajyoti D <shubhrajyoti@ti.com> Tested-by: Akshay Shankarmurthy <akshay.s@ti.com> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
* | | Merge branch 'akpm' (Andrew's patch-bomb)Linus Torvalds2012-04-051-7/+1
|\ \ \ | |/ / |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Merge batch of fixes from Andrew Morton: "The simple_open() cleanup was held back while I wanted for laggards to merge things. I still need to send a few checkpoint/restore patches. I've been wobbly about merging them because I'm wobbly about the overall prospects for success of the project. But after speaking with Pavel at the LSF conference, it sounds like they're further toward completion than I feared - apparently davem is at the "has stopped complaining" stage regarding the net changes. So I need to go back and re-review those patchs and their (lengthy) discussion." * emailed from Andrew Morton <akpm@linux-foundation.org>: (16 patches) memcg swap: use mem_cgroup_uncharge_swap fix backlight: add driver for DA9052/53 PMIC v1 C6X: use set_current_blocked() and block_sigmask() MAINTAINERS: add entry for sparse checker MAINTAINERS: fix REMOTEPROC F: typo alpha: use set_current_blocked() and block_sigmask() simple_open: automatically convert to simple_open() scripts/coccinelle/api/simple_open.cocci: semantic patch for simple_open() libfs: add simple_open() hugetlbfs: remove unregister_filesystem() when initializing module drivers/rtc/rtc-88pm860x.c: fix rtc irq enable callback fs/xattr.c:setxattr(): improve handling of allocation failures fs/xattr.c:listxattr(): fall back to vmalloc() if kmalloc() failed fs/xattr.c: suppress page allocation failure warnings from sys_listxattr() sysrq: use SEND_SIG_FORCED instead of force_sig() proc: fix mount -t proc -o AAA
generated by cgit (git 2.34.1) at 2024-05-28 06:10:47 +0000