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| | * | | spi: fsl-spi: Fix memory leakAxel Lin2014-04-141-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | mpc8xxx_spi_probe() has set master->cleanup = mpc8xxx_spi_cleanup, however current code overrides the setting in fsl_spi_probe() and set master->cleanup = fsl_spi_cleanup. Thus the memory allocated for cs is not freed anywhere. Convert to use devm_kzalloc to fix the memory leak. Signed-off-by: Axel Lin <axel.lin@ingics.com> Signed-off-by: Mark Brown <broonie@linaro.org>
| | * | | spi: fsl: Kill mpc8xxx_spi_cleanup and convert fsl_espi_setup to use ↵Axel Lin2014-04-143-8/+1
| | |/ / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | devm_kzalloc In current code, master->cleanup and master->setup are not set in the same function. This makes it hard to read and not good for code maintain. One example is in fsl-spi.c, master->cleanup is overrided in mpc8xxx_spi_probe() which leads to a memory leak. This patch removes mpc8xxx_spi_cleanup() and converts fsl_espi_setup to use devm_kzalloc so we don't need to take care of freeing memory. Signed-off-by: Axel Lin <axel.lin@ingics.com> Signed-off-by: Mark Brown <broonie@linaro.org>
| * | | spi: dw: Remove unused dw_spi_cleanup functionAxel Lin2014-05-121-6/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The dw_spi_cleanup() function was removed by commit c63f5da00845 "spi: dw: Don't call kfree for memory allocated by devm_kzalloc". commit ec37e8e1f0e3 "spi: dw: migrate to generic queue infrastructure" added dw_spi_cleanup() but never use it. So now I got below build warning: CC [M] drivers/spi/spi-dw.o drivers/spi/spi-dw.c:609:13: warning: 'dw_spi_cleanup' defined but not used [-Wunused-function] Signed-off-by: Axel Lin <axel.lin@ingics.com> Acked-by: Baruch Siach <baruch@tkos.co.il> Signed-off-by: Mark Brown <broonie@linaro.org>
| * | | spi: dw: add support for gpio controlled chip selectBaruch Siach2014-04-243-11/+45
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Also, use this opportunity to let spi_chip_sel() handle chip-select deactivation as well. Signed-off-by: Baruch Siach <baruch@tkos.co.il> Signed-off-by: Mark Brown <broonie@linaro.org>
| * | | spi: dw: migrate to generic queue infrastructureBaruch Siach2014-04-242-176/+15
| |/ / | | | | | | | | | | | | Signed-off-by: Baruch Siach <baruch@tkos.co.il> Signed-off-by: Mark Brown <broonie@linaro.org>
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*---. \ \ Merge remote-tracking branches 'spi/topic/adi', 'spi/topic/atmel' and ↵Mark Brown2014-06-025-212/+917
|\ \ \ \ \ | | | | | | | | | | | | | | | | | | 'spi/topic/cadence' into spi-next
| | | * | | spi: cadence: Add dependency on ARMHarini Katakam2014-04-151-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add dependency on ARM in Kconfig. This is to fix the build error related to _relaxed IO. Remove dependency on SPI_MASTER because this is already defined under if SPI_MASTER in Kconfig. Signed-off-by: Harini Katakam <harinik@xilinx.com> Signed-off-by: Mark Brown <broonie@linaro.org>
| | | * | | spi: Add driver for Cadence SPI controllerHarini Katakam2014-04-143-0/+681
| | | |/ / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add driver for Cadence SPI controller. This is used in Xilinx Zynq. Signed-off-by: Harini Katakam <harinik@xilinx.com> Signed-off-by: Mark Brown <broonie@linaro.org>
| | * | | spi: atmel: fix incorrect comparisonAlexandre Belloni2014-05-071-2/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Found using smatch: drivers/spi/spi-atmel.c:878 atmel_spi_pump_pio_data() warn: unsigned 'as->current_remaining_bytes' is never less than zero. Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com> Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com> Signed-off-by: Mark Brown <broonie@linaro.org>
| | * | | spi: atmel: Make current_remaining_bytes to be intAxel Lin2014-04-141-1/+3
| | |/ / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Don't use unsigned for current_remaining_bytes so we can check current_remaining_bytes < 0 case. Use int is enough for current_remaining_bytes. Signed-off-by: Axel Lin <axel.lin@ingics.com> Signed-off-by: Wenyou Yang <wenyou.yang@atmel.com> Signed-off-by: Mark Brown <broonie@linaro.org>
| * | | spi: spi-adi-v3: convert to use common clk frameworkScott Jiang2014-04-141-6/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Use common clk api to get spi clock. Signed-off-by: Scott Jiang <scott.jiang.linux@gmail.com> Signed-off-by: Mark Brown <broonie@linaro.org>
| * | | spi: convert spi-bfin-v3.c to a multiplatform driverScott Jiang2014-04-143-203/+223
| |/ / | | | | | | | | | | | | | | | | | | | | | Spi v3 controller is not only used on Blackfin. So rename it and use ioread/iowrite api to make it work on other platform. Signed-off-by: Scott Jiang <scott.jiang.linux@gmail.com> Signed-off-by: Mark Brown <broonie@linaro.org>
* | | Merge remote-tracking branch 'spi/topic/dt' into spi-nextMark Brown2014-06-021-0/+2
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| * | | spi: add "spi-lsb-first" to devicetreeZhao Qiang2014-04-141-0/+2
| |/ / | | | | | | | | | | | | | | | | | | | | | add optional property devicetree for SPI slave nodes into devicetree so that LSB mode can be enabled by devicetree. Signed-off-by: Zhao Qiang <B45475@freescale.com> Signed-off-by: Mark Brown <broonie@linaro.org>
* | | Merge remote-tracking branch 'spi/topic/core' into spi-nextMark Brown2014-06-021-11/+9
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| * | | spi: core: Ignore unsupported spi-[tr]x-bus-width property valuesGeert Uytterhoeven2014-05-261-10/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Rejecting unsupported values of spi-tx-bus-width and spi-rx-bus-width may break compatibility with future DTs. Just ignore them, falling back to Single SPI Transfers. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Mark Brown <broonie@linaro.org>
| * | | spi: core: Increase timeout valueHarini Katakam2014-04-141-1/+1
| |/ / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The existing timeout value in wait_for_completion_timeout is calculated from the transfer length and speed with tolerance of 10msec. This is too low because this is used for error conditions such as hardware hang etc. The xfer->speed_hz considered may not be the actual speed set because the best clock divisor is chosen from a limited set such that the actual speed <= requested speed. This will lead to timeout being less than actual transfer time. Considering acceptable latencies, this timeout can be set to a value double the expected transfer plus 100 msecs. This patch adds the same in the core. Signed-off-by: Harini Katakam <harinik@xilinx.com> Signed-off-by: Mark Brown <broonie@linaro.org>
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*-. \ \ Merge remote-tracking branches 'spi/fix/qup' and 'spi/fix/topcliff-pch' into ↵Mark Brown2014-06-022-3/+3
|\ \ \ \ | | | | | | | | | | | | | | | spi-linus
| | * | | spi/topcliff-pch: Fix Kconfig dependenciesJean Delvare2014-05-161-1/+1
| | |/ / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The spi-topcliff-pch driver is for a companion chip to the Intel Atom E600 series processors. These are 32-bit x86 processors so the driver is only needed on X86_32. Add COMPILE_TEST as an alternative, so that the driver can still be build-tested elsewhere. Signed-off-by: Jean Delvare <jdelvare@suse.de> Signed-off-by: Mark Brown <broonie@linaro.org>
| * | | spi: qup: Correct selection of FIFO/Block modeAndy Gross2014-05-141-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch fixes the calculation for determining whether to use FIFO or BLOCK mode. Signed-off-by: Andy Gross <agross@codeaurora.org> Signed-off-by: Mark Brown <broonie@linaro.org>
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*-. | | | Merge remote-tracking branches 'spi/fix/pxa2xx' and 'spi/fix/qup' into spi-linusMark Brown2014-05-132-17/+1
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| | * | | spi: qup: Fix return value checking for pm_runtime_get_sync()Axel Lin2014-05-031-1/+1
| | |/ / | | | | | | | | | | | | | | | | | | | | | | | | pm_runtime_get_sync() returns 1 if !CONFIG_PM_RUNTIME. Signed-off-by: Axel Lin <axel.lin@ingics.com> Signed-off-by: Mark Brown <broonie@linaro.org>
| * / / spi/pxa2xx: Prevent DMA from transferring too many bytesMika Westerberg2014-05-121-16/+0
| |/ / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In case we are doing DMA transfer and the size of the buffer is not multiple of 4 bytes the driver truncates that to 4-byte boundary and tries to handle remaining bytes using PIO. Or that is what it tried to do. What actually happens is that it calls ALIGN() to the buffer size which aligns it to the next 4-byte boundary (doesn't truncate). Doing this results 1-3 bytes extra to be transferred. Furthermore we handle remaining bytes using PIO which results one extra byte to be transferred. In worst case the driver transfers 4 extra bytes. While investigating this it turned out that the DMA hardware doesn't even have such limitation so we can solve this by dropping the code that tries to handle unaligned bytes. Reported-by: Chiau Ee Chew <chiau.ee.chew@intel.com> Reported-by: Hock Leong Kweh <hock.leong.kweh@intel.com> Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com> Signed-off-by: Mark Brown <broonie@linaro.org>
* | | Merge remote-tracking branch 'spi/fix/core' into spi-linusMark Brown2014-05-131-47/+77
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| * | | spi: core: Don't destroy master queue if we fail to create itMark Brown2014-05-031-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | If we fail to create the master queue for some reason we should not attempt to clean it up since attempting to stop a kthread that was not created will hang and it's just generally bad practice. Unfortunately at present we call spi_destroy_queue() even in cases where the creation fails. Fix this by fixing the error handling in spi_master_initialize_queue() so that we only flag the master as queued or destroy the queue if creation succeeded. The change to the flag is done since the general master cleanup uses this to destroy the queue. Reported-by: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com> Signed-off-by: Mark Brown <broonie@linaro.org> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
| * | | spi: core: Protect DMA code by #ifdef CONFIG_HAS_DMAGeert Uytterhoeven2014-05-021-44/+65
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | If NO_DMA=y: drivers/built-in.o: In function `spi_map_buf': spi.c:(.text+0x21bc60): undefined reference to `dma_map_sg' drivers/built-in.o: In function `spi_unmap_buf.isra.33': spi.c:(.text+0x21c32e): undefined reference to `dma_unmap_sg' make[3]: *** [vmlinux] Error 1 Protect the DMA code by #ifdef CONFIG_HAS_DMA to fix this: - Extract __spi_map_msg() from spi_map_msg(), - Provide dummy definitions of __spi_map_msg() and spi_unmap_msg() if !CONFIG_HAS_DMA. Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Mark Brown <broonie@linaro.org>
| * | | spi: core: Ignore unsupported Dual/Quad Transfer Mode bitsGeert Uytterhoeven2014-04-181-1/+10
| |/ / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The availability of SPI Dual or Quad Transfer Mode as indicated by the "spi-tx-bus-width" and "spi-rx-bus-width" properties in the device tree is a hardware property of the SPI master, SPI slave, and board wiring. Hence the SPI core should not reject an SPI slave because an SPI master driver doesn't (yet) support Dual or Quad Transfer Mode. Change the lack of Dual or Quad Transfer Mode support in the SPI master driver from an error condition to a warning condition, and ignore the unsupported mode bits, falling back to Single Transfer Mode, to avoid breakages when running old kernels with new device trees. Fixes: f477b7fb13df (spi: DUAL and QUAD support) Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Mark Brown <broonie@linaro.org> Cc: stable@vger.kernel.org
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*-----. \ \ Merge remote-tracking branches 'spi/fix/atmel', 'spi/fix/bfin5xx', ↵Mark Brown2014-04-234-5/+23
|\ \ \ \ \ \ | |_|_|_|/ / |/| | | | / | | | | |/ 'spi/fix/hspi' and 'spi/fix/sirf' into spi-linus
| | | | * spi: sirf: make GPIO chipselect function work wellQipan Li2014-04-141-1/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | orignal GPIO chipslect is not standard because it don't take care to the chipselect signal: BITBANG_CS_ACTIVE and BITBANG_CS_INACTIVE. Signed-off-by: Qipan Li <Qipan.Li@csr.com> Signed-off-by: Barry Song <Baohua.Song@csr.com> Signed-off-by: Mark Brown <broonie@linaro.org>
| | | | * spi: sirf: set SPI controller in RISC IO chipselect modeQipan Li2014-04-141-0/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | SPI bitbang supply "chipselect" interface for change chip-select line , in the SiRFSoC SPI controller, we need to enable "SPI_CS_IO_MODE", otherwise, spi_sirfsoc_chipselect() has no effect. now the driver is working is because SPI controller will control CS automatically without SPI_CS_IO_MODE. this patch makes the CS controller really controlled by software. Signed-off-by: Qipan Li <Qipan.Li@csr.com> Signed-off-by: Barry Song <Baohua.Song@csr.com> Signed-off-by: Mark Brown <broonie@linaro.org>
| | | | * spi: sirf: correct TXFIFO empty interrupt status bitQipan Li2014-04-141-2/+2
| |_|_|/ |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | the old code uses wrong marco - SIRFSOC_SPI_FIFO_FULL is not for FIFO interrupt status, it is for FIFO status. here in the ISR, SIRFSOC_SPI_TXFIFO_EMPTY is the right bit for SPI TXFIFO interrupt status. Signed-off-by: Qipan Li <Qipan.Li@csr.com> Signed-off-by: Barry Song <Baohua.Song@csr.com> Signed-off-by: Mark Brown <broonie@linaro.org>
| | | * spi: sh-hspi: Do not specifically request shyway_clk clockSimon Horman2014-04-141-2/+2
| |_|/ |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Rather than requesting the shyway_clk call clk_get with the device and a NULL con_id. This is in keeping with the way that clk_get() is called on other drivers used by Renesas Gen 1 SoCs. And I believe it is compatible with supplying clocks via DT, unlike the current code. It appears to me that the two uses of this driver are the r8a7778 and r8a7779 SoCs. The r8a7779 already has clocks setup to allow this driver to continue to work with this change applied. The r8a7778 has clocks incorrectly setup to allow this driver to continue to work with this change applied. This problem is addressed in "ARM: shmobile: r8a7778: Use clks as MSTP007 parent" which is thus a pre-requisite of this patch. Signed-off-by: Simon Horman <horms+renesas@verge.net.au> Signed-off-by: Mark Brown <broonie@linaro.org>
| | * spi: bfin5xx: fix build errorSteven Miao2014-04-141-0/+1
| |/ |/| | | | | | | | | | | should include linux/gpio.h Signed-off-by: Steven Miao <realmz6@gmail.com> Signed-off-by: Mark Brown <broonie@linaro.org>
| * spi: atmel: Fix scheduling while atomic bugAlexander Stein2014-04-181-0/+3
|/ | | | | | | | atmel_spi_lock does a spin_lock_irqsave, so we need to renable the interrupts when we want to schedule. Signed-off-by: Alexander Stein <alexanders83@web.de> Signed-off-by: Mark Brown <broonie@linaro.org>
* Merge tag 'spi-v3.15-fixes' of ↵Linus Torvalds2014-04-119-27/+28
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi Pull spi fixes from Mark Brown: "A few driver specific fixes, the main one being the fix for handling of complete callbacks that are open coded in individual drivers to allow callers to omit the completion. As we move things into the core that sort of issue should become less and less common" * tag 'spi-v3.15-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi: spi: qup: Depend on ARCH_QCOM spi: efm32: Update binding document to make "efm32,location" property optional spi: omap2-mcspi: Convert to use devm_kcalloc spi: Always check complete callback before calling it
| *---. Merge remote-tracking branches 'spi/fix/complete', 'spi/fix/efm32', ↵Mark Brown2014-04-119-27/+28
| |\ \ \ | | | | | | | | | | | | | | | 'spi/fix/omap2-mcspi' and 'spi/fix/qup' into spi-linus
| | | | * spi: qup: Depend on ARCH_QCOMPaul Bolle2014-04-081-1/+1
| | |_|/ | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit 8fc1b0f87d9f ("ARM: qcom: Split Qualcomm support into legacy and multiplatform") removed Kconfig symbol ARCH_MSM_DT. But that commit left one (optional) dependency on ARCH_MSM_DT untouched. Three Kconfig symbols used to depend on ARCH_MSM_DT: ARCH_MSM8X60, ARCH_MSM8960, and ARCH_MSM8974. These three symbols now depend on ARCH_QCOM. So it appears this driver needs to depend on ARCH_QCOM too. Signed-off-by: Paul Bolle <pebolle@tiscali.nl> Reviewed-by: Stephen Boyd <sboyd@codeaurora.org> Signed-off-by: Mark Brown <broonie@linaro.org>
| | | * spi: omap2-mcspi: Convert to use devm_kcallocAxel Lin2014-04-031-17/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | This saves a few unwind code and return proper error if devm_kcalloc fails. Signed-off-by: Axel Lin <axel.lin@ingics.com> Signed-off-by: Mark Brown <broonie@linaro.org>
| | * | spi: Always check complete callback before calling itAxel Lin2014-04-037-9/+18
| | |/ | | | | | | | | | | | | | | | | | | | | | Since commit 1e25cd4729bd "spi: Do not require a completion", this checking is required to prevent NULL pointer dereference. Signed-off-by: Axel Lin <axel.lin@ingics.com> Signed-off-by: Mark Brown <broonie@linaro.org>
* | | Merge branch 'mips-for-linux-next' of ↵Linus Torvalds2014-04-021-0/+9
|\ \ \ | |/ / |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.linux-mips.org/pub/scm/ralf/upstream-sfr Pull MIPS updates from Ralf Baechle: - Support for Imgtec's Aptiv family of MIPS cores. - Improved detection of BCM47xx configurations. - Fix hiberation for certain configurations. - Add support for the Chinese Loongson 3 CPU, a MIPS64 R2 core and systems. - Detection and support for the MIPS P5600 core. - A few more random fixes that didn't make 3.14. - Support for the EVA Extended Virtual Addressing - Switch Alchemy to the platform PATA driver - Complete unification of Alchemy support - Allow availability of I/O cache coherency to be runtime detected - Improvments to multiprocessing support for Imgtec platforms - A few microoptimizations - Cleanups of FPU support - Paul Gortmaker's fixes for the init stuff - Support for seccomp * 'mips-for-linux-next' of git://git.linux-mips.org/pub/scm/ralf/upstream-sfr: (165 commits) MIPS: CPC: Use __raw_ memory access functions MIPS: CM: use __raw_ memory access functions MIPS: Fix warning when including smp-ops.h with CONFIG_SMP=n MIPS: Malta: GIC IPIs may be used without MT MIPS: smp-mt: Use common GIC IPI implementation MIPS: smp-cmp: Remove incorrect core number probe MIPS: Fix gigaton of warning building with microMIPS. MIPS: Fix core number detection for MT cores MIPS: MT: core_nvpes function to retrieve VPE count MIPS: Provide empty mips_mt_set_cpuoptions when CONFIG_MIPS_MT=n MIPS: Lasat: Replace del_timer by del_timer_sync MIPS: Malta: Setup PM I/O region on boot MIPS: Loongson: Add a Loongson-3 default config file MIPS: Loongson 3: Add CPU hotplug support MIPS: Loongson 3: Add Loongson-3 SMP support MIPS: Loongson: Add Loongson-3 Kconfig options MIPS: Loongson: Add swiotlb to support All-Memory DMA MIPS: Loongson 3: Add serial port support MIPS: Loongson 3: Add IRQ init and dispatch support MIPS: Loongson 3: Add HT-linked PCI support ...
| * | Merge branch '3.14-fixes' into mips-for-linux-nextRalf Baechle2014-03-316-17/+35
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| * | MIPS: Alchemy: Unify Devboard support.Manuel Lauss2014-03-261-0/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch merges support for all DB1xxx and PB1xxx boards into a single image, along with a new single defconfig for them. Run-tested on DB1300 and DB1500. Signed-off-by: Manuel Lauss <manuel.lauss@gmail.com> Cc: Linux-MIPS <linux-mips@linux-mips.org> Patchwork: https://patchwork.linux-mips.org/patch/6577/ Patchwork: https://patchwork.linux-mips.org/patch/6659/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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*-. \ \ Merge remote-tracking branches 'spi/topic/xilinx' and 'spi/topic/xtfpga' ↵Mark Brown2014-03-304-20/+190
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| | * | | spi: xtensa-xtfpga: Enable driver compilation with COMPILE_TESTAxel Lin2014-03-211-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This helps increasing build testing coverage. Signed-off-by: Axel Lin <axel.lin@ingics.com> Reviewed-by: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Mark Brown <broonie@linaro.org>
| | * | | spi: add xtfpga SPI controller driverMax Filippov2014-03-133-0/+184
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This simple SPI master controller is built into xtfpga bitstreams. It always transfers 16 bit words in SPI mode 0, automatically asserting CS on transfer start and deasserting on end. Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Mark Brown <broonie@linaro.org>
| * | | | spi: xilinx: remove unnecessary spacesJingoo Han2014-02-271-4/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Remove unnecessary space in order to fix the following checkpatch issues. WARNING: Unnecessary space after function pointer name Signed-off-by: Jingoo Han <jg1.han@samsung.com> Reviewed-by: Michal Simek <monstr@monstr.eu> Signed-off-by: Mark Brown <broonie@linaro.org>
| * | | | spi: xilinx: Convert to let spi core validate bits_per_wordAxel Lin2014-02-231-16/+2
| |/ / / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Set bits_per_word_mask so spi core will reject transfers that attempt to use an unsupported bits_per_word value. spi_bitbang requires custom setup_transfer() to be defined if there is a custom txrx_bufs(). Thus keep the empty xilinx_spi_setup_transfer() function in the code. Signed-off-by: Axel Lin <axel.lin@ingics.com> Acked-by: Michal Simek <michal.simek@xilinx.com> Signed-off-by: Mark Brown <broonie@linaro.org>
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*-------------. \ \ \ Merge remote-tracking branches 'spi/topic/sunxi', 'spi/topic/tegra114', ↵Mark Brown2014-03-3011-459/+1005
|\ \ \ \ \ \ \ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 'spi/topic/ti-qspi', 'spi/topic/ti-ssp', 'spi/topic/topcliff-pch', 'spi/topic/txx9', 'spi/topic/xcomm' and 'spi/topic/xfer' into spi-next
| | | | | | | | * | | | spi: Add a timeout when waiting for transfersMark Brown2014-02-031-1/+11
| | | | | | | | |/ / / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Don't wait indefinitely for transfers to complete but time out after 10ms more than we expect the transfer to take on the wire. Signed-off-by: Mark Brown <broonie@linaro.org>
| | | | | | | * / / / spi: xcomm: Remove duplicate code to set default bits_per_word and max speedAxel Lin2014-03-041-8/+4
| | | | | | | |/ / / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In the implementation of __spi_validate(), spi core will set transfer bits_per_word and max speed as spi device default if it is not set for this transfer. So we can remove the same logic in spi_xcomm_setup_transfer(). Also remove a redundant code to initialize is_first variable. Signed-off-by: Axel Lin <axel.lin@ingics.com> Acked-by: Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Mark Brown <broonie@linaro.org>
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