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* Merge tag 'powerpc-4.5-1' of ↵Linus Torvalds2016-01-151-1/+1
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux Pull powerpc updates from Michael Ellerman: "Core: - Ground work for the new Power9 MMU from Aneesh Kumar K.V - Optimise FP/VMX/VSX context switching from Anton Blanchard Misc: - Various cleanups from Krzysztof Kozlowski, John Ogness, Rashmica Gupta, Russell Currey, Gavin Shan, Daniel Axtens, Michael Neuling, Andrew Donnellan - Allow wrapper to work on non-english system from Laurent Vivier - Add rN aliases to the pt_regs_offset table from Rashmica Gupta - Fix module autoload for rackmeter & axonram drivers from Luis de Bethencourt - Include KVM guest test in all interrupt vectors from Paul Mackerras - Fix DSCR inheritance over fork() from Anton Blanchard - Make value-returning atomics & {cmp}xchg* & their atomic_ versions fully ordered from Boqun Feng - Print MSR TM bits in oops messages from Michael Neuling - Add TM signal return & invalid stack selftests from Michael Neuling - Limit EPOW reset event warnings from Vipin K Parashar - Remove the Cell QPACE code from Rashmica Gupta - Append linux_banner to exception information in xmon from Rashmica Gupta - Add selftest to check if VSRs are corrupted from Rashmica Gupta - Remove broken GregorianDay() from Daniel Axtens - Import Anton's context_switch2 benchmark into selftests from Michael Ellerman - Add selftest script to test HMI functionality from Daniel Axtens - Remove obsolete OPAL v2 support from Stewart Smith - Make enter_rtas() private from Michael Ellerman - PPR exception cleanups from Michael Ellerman - Add page soft dirty tracking from Laurent Dufour - Add support for Nvlink NPUs from Alistair Popple - Add support for kexec on 476fpe from Alistair Popple - Enable kernel CPU dlpar from sysfs from Nathan Fontenot - Copy only required pieces of the mm_context_t to the paca from Michael Neuling - Add a kmsg_dumper that flushes OPAL console output on panic from Russell Currey - Implement save_stack_trace_regs() to enable kprobe stack tracing from Steven Rostedt - Add HWCAP bits for Power9 from Michael Ellerman - Fix _PAGE_PTE breaking swapoff from Aneesh Kumar K.V - Fix _PAGE_SWP_SOFT_DIRTY breaking swapoff from Hugh Dickins - scripts/recordmcount.pl: support data in text section on powerpc from Ulrich Weigand - Handle R_PPC64_ENTRY relocations in modules from Ulrich Weigand cxl: - cxl: Fix possible idr warning when contexts are released from Vaibhav Jain - cxl: use correct operator when writing pcie config space values from Andrew Donnellan - cxl: Fix DSI misses when the context owning task exits from Vaibhav Jain - cxl: fix build for GCC 4.6.x from Brian Norris - cxl: use -Werror only with CONFIG_PPC_WERROR from Brian Norris - cxl: Enable PCI device ID for future IBM CXL adapter from Uma Krishnan Freescale: - Freescale updates from Scott: Highlights include moving QE code out of arch/powerpc (to be shared with arm), device tree updates, and minor fixes" * tag 'powerpc-4.5-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (149 commits) powerpc/module: Handle R_PPC64_ENTRY relocations scripts/recordmcount.pl: support data in text section on powerpc powerpc/powernv: Fix OPAL_CONSOLE_FLUSH prototype and usages powerpc/mm: fix _PAGE_SWP_SOFT_DIRTY breaking swapoff powerpc/mm: Fix _PAGE_PTE breaking swapoff cxl: Enable PCI device ID for future IBM CXL adapter cxl: use -Werror only with CONFIG_PPC_WERROR cxl: fix build for GCC 4.6.x powerpc: Add HWCAP bits for Power9 powerpc/powernv: Reserve PE#0 on NPU powerpc/powernv: Change NPU PE# assignment powerpc/powernv: Fix update of NVLink DMA mask powerpc/powernv: Remove misleading comment in pci.c powerpc: Implement save_stack_trace_regs() to enable kprobe stack tracing powerpc: Fix build break due to paca mm_context_t changes cxl: Fix DSI misses when the context owning task exits MAINTAINERS: Update Scott Wood's e-mail address powerpc/powernv: Fix minor off-by-one error in opal_mce_check_early_recovery() powerpc: Fix style of self-test config prompts powerpc/powernv: Only delay opal_rtc_read() retry when necessary ...
| * QE: Move QE from arch/powerpc to drivers/socZhao Qiang2015-12-231-1/+1
| | | | | | | | | | | | | | | | | | ls1 has qe and ls1 has arm cpu. move qe from arch/powerpc to drivers/soc/fsl to adapt to powerpc and arm Signed-off-by: Zhao Qiang <qiang.zhao@freescale.com> Signed-off-by: Scott Wood <scottwood@freescale.com>
* | Merge tag 'spi-v4.5' of ↵Linus Torvalds2016-01-1323-177/+1387
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi Pull spi updates from Mark Brown: "A quiet release for SPI, not even many driver updates: - Add a dummy loopback driver for use in exercising framework features during development. - Move the test utilities to tools/ and add support for transferring data to and from a file instead of stdin and stdout to spidev_test. - Support for Mediatek MT2701 and Renesas AG5 deices" * tag 'spi-v4.5' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi: (69 commits) spi: loopback: fix typo in MODULE_PARM_DESC spi: sun4i: Prevent chip-select from being activated twice before a transfer spi: loopback-test: spi_check_rx_ranges can get always done spi: loopback-test: rename method spi_test_fill_tx to spi_test_fill_pattern spi: loopback-test: write rx pattern also when running without tx_buf spi: fsl-espi: expose maximum transfer size limit spi: expose master transfer size limitation. spi: zynq: use to_platform_device() spi: cadence: use to_platform_device() spi: mediatek: Add spi support for mt2701 IC spi: mediatek: merge all identical compat to mtk_common_compat spi: mtk: Add bindings for mediatek MT2701 soc platform spi: mediatek: Prevent overflows in FIFO transfers spi: s3c64xx: Remove unused platform_device_id entries spi: use to_spi_device spi: dw: Use SPI_TMOD_TR rather than magic const 0 to set tmode spi: imx: defer spi initialization, if DMA engine is spi: imx: return error from dma channel request spi: imx: enable loopback only for ECSPI controller family spi: imx: fix loopback mode setup after controller reset ...
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| *---. \ Merge remote-tracking branches 'spi/topic/sun4i', 'spi/topic/topcliff-pch' ↵Mark Brown2016-01-114-15/+11Star
| |\ \ \ \ | | | | | | | | | | | | | | | | | | and 'spi/topic/zynq' into spi-next
| | | | * | spi: zynq: use to_platform_device()Geliang Tang2016-01-051-6/+2Star
| | | | |/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Use to_platform_device() instead of open-coding it. Signed-off-by: Geliang Tang <geliangtang@163.com> Reviewed-by: Moritz Fischer <moritz.fischer@ettus.com> Signed-off-by: Mark Brown <broonie@kernel.org>
| | | * / spi: topcliff-pch: allow build for MIPS platformsPaul Burton2015-11-301-1/+1
| | | |/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | Allow the topcliff-pch driver to be built for MIPS platforms, in preparation for use on the MIPS Boston board. Signed-off-by: Paul Burton <paul.burton@imgtec.com> Signed-off-by: Mark Brown <broonie@kernel.org>
| | * / spi: sun4i: allow transfers to set transmission speedMarcus Weseloh2015-11-182-8/+8
| | |/ | | | | | | | | | | | | | | | | | | | | | | | | Allow transfers to set the transmission speed rather than using the device max_speed_hz value. The SPI core makes sure that the speed_hz value is always set on the transfer. Signed-off-by: Marcus Weseloh <mweseloh42@gmail.com> Signed-off-by: Mark Brown <broonie@kernel.org>
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| *-------. \ Merge remote-tracking branches 'spi/topic/overlay', 'spi/topic/pxa2xx', ↵Mark Brown2016-01-114-30/+37
| |\ \ \ \ \ \ | | | | | | |/ | | | | | |/| | | | | | | | 'spi/topic/s3c64xx', 'spi/topic/sh-msiof' and 'spi/topic/spidev' into spi-next
| | | | | | * spi: spidev: Use "%u" to format __u32Geert Uytterhoeven2015-11-301-1/+1
| | | | | |/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | On 64-bit with CONFIG_SPI_DEBUG=y and #define VERBOSE: drivers/spi/spidev.c:287:3: warning: format '%zd' expects argument of type 'signed size_t', but argument 4 has type '__u32' [-Wformat=] Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Mark Brown <broonie@kernel.org>
| | | | * | spi: s3c64xx: Remove unused platform_device_id entriesSylwester Nawrocki2015-12-301-6/+0Star
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | s5pv210 and exynos4 are now DT only platforms hence these entries can now be safely removed from the match table. Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Signed-off-by: Mark Brown <broonie@kernel.org>
| | | | * | spi: s3c64xx: pass DMA arguments in platform dataArnd Bergmann2015-11-181-20/+7Star
| | | | |/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The s3c64xx platform data already contains a pointer to the DMA filter function, but not to the associated data. This simplifies the code and makes it more generic by passing the data along with the filter function like we do for other drivers. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Mark Brown <broonie@kernel.org>
| | | * / spi: pxa2xx: Remove redundant call to lpss_ssp_setup() in probeMika Westerberg2015-11-201-3/+0Star
| | | |/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit 8b136baa5892 ("spi: pxa2xx: Detect number of enabled Intel LPSS SPI chip select signals") added a block where lpss_ssp_setup() gets called again for Intel LPSS SPI host controllers before checking number of chip selects from the capabilities register. There is no point in calling the function twice in probe so remove the first call. Reported-by: Aaron Lu <aaron.lu@intel.com> Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com> Acked-by: Jarkko Nikula <jarkko.nikula@linux.intel.com> Signed-off-by: Mark Brown <broonie@kernel.org>
| | * | spi: Mark instantiated device nodes with OF_POPULATEGeert Uytterhoeven2015-12-011-2/+17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Mark (and unmark) device nodes with the POPULATE flag as appropriate. This is required to avoid multi probing when enabling and populating SPI buses in DT overlays. Based on commit 4f001fd30145a6a8 ("i2c: Mark instantiated device nodes with OF_POPULATE"). Suggested-by: Mark Brown <broonie@kernel.org> Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Mark Brown <broonie@kernel.org>
| | * | spi: Uninline spi_unregister_device()Geert Uytterhoeven2015-12-011-0/+14
| | |/ | | | | | | | | | | | | | | | | | | | | | Uninline spi_unregister_device() in preparation of adding more code to it. Add kerneldoc documentation while we're at it. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Mark Brown <broonie@kernel.org>
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| *-----. \ Merge remote-tracking branches 'spi/topic/lm70llp', 'spi/topic/loopback', ↵Mark Brown2016-01-117-45/+1216
| |\ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | 'spi/topic/mtk' and 'spi/topic/omap2-mcspi' into spi-next
| | | | | * | spi: omap2-mcspi: Prevent duplicate gpio_requestMichael Welling2015-12-011-9/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Occasionally the setup function will be called multiple times. Only request the gpio the first time otherwise -EBUSY will occur on subsequent calls to setup. Reported-by: Joseph Bell <joe@iachieved.it> Signed-off-by: Michael Welling <mwelling@ieee.org> Signed-off-by: Mark Brown <broonie@kernel.org>
| | | | | * | spi: omap2-mcspi: Add calls for pinctrl state selectPascal Huerst2015-11-191-1/+11
| | | | | |/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This adds calls to pinctrl subsystem in order to switch pin states on suspend/resume if you provide a "sleep" state in DT. If no "sleep" state is provided in DT, these calls turn to NOPs. Signed-off-by: Pascal Huerst <pascal.huerst@gmail.com> Signed-off-by: Mark Brown <broonie@kernel.org>
| | | | * | spi: mediatek: Add spi support for mt2701 ICLeilk Liu2015-12-311-0/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch adds spi support for mt2701 IC. Signed-off-by: Leilk Liu <leilk.liu@mediatek.com> Signed-off-by: Mark Brown <broonie@kernel.org>
| | | | * | spi: mediatek: merge all identical compat to mtk_common_compatLeilk Liu2015-12-311-5/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch merge all identical compat into on mtk_common_compat and used for all compatible soc. Signed-off-by: Leilk Liu <leilk.liu@mediatek.com> Reviewed-by: Matthias Brugger <matthias.bgg@gmail.com> Signed-off-by: Mark Brown <broonie@kernel.org>
| | | | * | spi: mediatek: revise mtk_spi_probe() failure flowLeilk Liu2015-11-251-7/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | mtk_spi_probe() calls pm_runtime_enable(), after pm_runtime_enable() is called, it should call pm_runtime_disable() in the failure flow. Signed-off-by: Leilk Liu <leilk.liu@mediatek.com> Signed-off-by: Mark Brown <broonie@kernel.org>
| | | | * | Merge branch 'fix/mediatek' of ↵Mark Brown2015-11-251-8/+18
| | | | |\ \ | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi into spi-mtk
| | | | * | | spi: mediatek: remove needless pair of writel()/readl()leilk.liu@mediatek.com2015-11-211-3/+0Star
| | | | | |/ | | | | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | It's not need to re-read and re-write SPI_CMD_REG, so remove it. Signed-off-by: Leilk Liu <leilk.liu@mediatek.com> Reviewed-by: Matthias Brugger <matthias.bgg@gmail.com> Signed-off-by: Mark Brown <broonie@kernel.org>
| | | * | | spi: loopback: fix typo in MODULE_PARM_DESCDan Carpenter2016-01-081-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | There should be an 's' on "dump_message" so it matches the module_param. Fixes: 84e0c4e5e2c4 ('spi: add loopback test driver to allow for spi_master regression tests') Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Mark Brown <broonie@kernel.org>
| | | * | | spi: loopback-test: spi_check_rx_ranges can get always doneMartin Sperl2016-01-051-5/+14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The spi_check_rx_ranges can always get executed independent of if we have a real loopback situation. Signed-off-by: Martin Sperl <kernel@martin.sperl.org> Signed-off-by: Mark Brown <broonie@kernel.org>
| | | * | | spi: loopback-test: rename method spi_test_fill_tx to spi_test_fill_patternMartin Sperl2016-01-051-3/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Rename method spi_test_fill_tx to spi_test_fill_pattern to better describe what it does. Signed-off-by: Martin Sperl <kernel@martin.sperl.org> Signed-off-by: Mark Brown <broonie@kernel.org>
| | | * | | spi: loopback-test: write rx pattern also when running without tx_bufMartin Sperl2016-01-051-4/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently the rx_buf does not get set with the SPI_TEST_PATTERN_UNWRITTEN when tx_buf == NULL in the transfer. Reorder code so that it gets done also under this specific condition. Signed-off-by: Martin Sperl <kernel@martin.sperl.org> Signed-off-by: Mark Brown <broonie@kernel.org>
| | | * | | spi: loopback: added additional non-power of 2 transfer lengthesMartin Sperl2015-12-131-3/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Added additional transfer length to test that are not a power of 2. Signed-off-by: Martin Sperl <kernel@martin.sperl.org> Signed-off-by: Mark Brown <broonie@kernel.org>
| | | * | | spi: loopback: match configuration of test to descriptionMartin Sperl2015-12-131-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The test "two tx+rx transfers - alter second" actually modifies the first not the second transfer, which - in conjunction with testing the read data - results also in overwriting data read earlier. Signed-off-by: Martin Sperl <kernel@martin.sperl.org> Signed-off-by: Mark Brown <broonie@kernel.org>
| | | * | | spi: loopback: fix printk format issues with size_tMartin Sperl2015-12-131-3/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fixes the reported printk format issues reported by kbuild-test-robot. Signed-off-by: Martin Sperl <kernel@martin.sperl.org> Signed-off-by: Mark Brown <broonie@kernel.org>
| | | * | | spi: add spi-loopback-test to build frameworkMartin Sperl2015-12-132-0/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | adding the spi-loopback-test module to Kconfig and Makefile Signed-off-by: Martin Sperl <kernel@martin.sperl.org> Signed-off-by: Mark Brown <broonie@kernel.org>
| | | * | | spi: add loopback test driver to allow for spi_master regression testsMartin Sperl2015-12-132-0/+1130
| | | |/ / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This driver is submitting lots of distinct spi-messages messages with all kinds of alignments and length pattern. Also distinct kinds of transfer pattern tests are implemented (rx, tx, rx/tx, tx+tx, tx+rx,...) Right now on a raspberry pi 752 distinct spi_messages are executed in 13 different scenarios. Configuration of additional test-pattern is easy, so that when new bugs in drivers get detected the relevant transfer pattern can also get added to the test framework, so that such situations are detected in other drivers as well. The idea behind this driver is to make it possible to also detect regressions in spi_master implementations when changes occur. Potentially these tests could get executed automatically in a test-server-farm. Signed-off-by: Martin Sperl <kernel@martin.sperl.org> Signed-off-by: Mark Brown <broonie@kernel.org>
| | * | | spi: lm70llp: remove printkSudip Mukherjee2015-12-071-4/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Using pr_* macros are more prefferable than using printk. Start using pr_* family of macros and define pr_fmt to be used with it. While at it remove DRVNAME from an existing pr_info() as the name is now being printed by pr_fmt. Signed-off-by: Sudip Mukherjee <sudip@vectorindia.org> Signed-off-by: Mark Brown <broonie@kernel.org>
| | * | | spi: lm70llp: use dev_warnSudip Mukherjee2015-12-071-4/+3Star
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | As we have a struct device available it is better to use dev_warn() instead of printk. Signed-off-by: Sudip Mukherjee <sudip@vectorindia.org> Signed-off-by: Mark Brown <broonie@kernel.org>
| | * | | spi: lm70llp: use new parport device modelSudip Mukherjee2015-12-041-4/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Modify spi-lm70llp driver to use the new parallel port device model. Signed-off-by: Sudip Mukherjee <sudip@vectorindia.org> Signed-off-by: Mark Brown <broonie@kernel.org>
| | * | | spi: lm70llp: remove spaceSudip Mukherjee2015-12-041-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | checkpatch complains about space before closing brace. Signed-off-by: Sudip Mukherjee <sudip@vectorindia.org> Signed-off-by: Mark Brown <broonie@kernel.org>
| | * | | spi: lm70llp: correct alignmentSudip Mukherjee2015-12-041-3/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | checkpatch complains about the allignment with open parenthesis. Signed-off-by: Sudip Mukherjee <sudip@vectorindia.org> Signed-off-by: Mark Brown <broonie@kernel.org>
| | * | | spi: lm70llp: remove cast to voidSudip Mukherjee2015-12-041-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | checkpatch was complaining about space after cast. But the cast to void is not required at that place. Signed-off-by: Sudip Mukherjee <sudip@vectorindia.org> Signed-off-by: Mark Brown <broonie@kernel.org>
| | * | | spi: lm70llp: add blank line after declarationSudip Mukherjee2015-12-041-0/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | checkpatch complains about missing blank line after declaration. Signed-off-by: Sudip Mukherjee <sudip@vectorindia.org> Signed-off-by: Mark Brown <broonie@kernel.org>
| | * | | spi: lm70llp: remove multiple blank linesSudip Mukherjee2015-12-041-4/+0Star
| | |/ / | | | | | | | | | | | | | | | | | | | | | | | | checkpatch complains about multiple blank lines. Signed-off-by: Sudip Mukherjee <sudip@vectorindia.org> Signed-off-by: Mark Brown <broonie@kernel.org>
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| *-----. \ \ Merge remote-tracking branches 'spi/topic/dw', 'spi/topic/dw-mid', ↵Mark Brown2016-01-115-37/+76
| |\ \ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | 'spi/topic/fsl-espi' and 'spi/topic/imx' into spi-next
| | | | | * | | spi: imx: defer spi initialization, if DMA engine isAnton Bondarenko2015-12-151-0/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | If SPI device supports DMA mode, but DMA controller is not yet available due to e.g. a delay in the corresponding kernel module initialization, retry to initialize SPI driver later on instead of falling back into PIO only mode. Signed-off-by: Anton Bondarenko <anton.bondarenko.sama@gmail.com> Signed-off-by: Mark Brown <broonie@kernel.org>
| | | | | * | | spi: imx: return error from dma channel requestAnton Bondarenko2015-12-151-11/+16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | On SDMA initialization return exactly the same error, which is reported by dma_request_slave_channel_reason(), it is a preceding change to defer SPI DMA initialization, if SDMA module is not yet available. Signed-off-by: Vladimir Zapolskiy <vladimir_zapolskiy@mentor.com> Signed-off-by: Anton Bondarenko <anton.bondarenko.sama@gmail.com> Signed-off-by: Mark Brown <broonie@kernel.org>
| | | | | * | | spi: imx: enable loopback only for ECSPI controller familyAnton Bondarenko2015-12-151-5/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Limit SPI_LOOP mode to ECSPI controller (iMX.51, iMX53 and i.MX6) only since there is no support in other families specific code for now. Signed-off-by: Anton Bondarenko <anton.bondarenko.sama@gmail.com> Signed-off-by: Mark Brown <broonie@kernel.org>
| | | | | * | | spi: imx: fix loopback mode setup after controller resetAnton Bondarenko2015-12-151-1/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | If controller hold in reset it's not possible to write any register except CTRL. So all other registers must be updated only after controller bring out from reset. Signed-off-by: Anton Bondarenko <anton.bondarenko.sama@gmail.com> Signed-off-by: Mark Brown <broonie@kernel.org>
| | | | | * | | spi: imx: add function to check for IMX51 family controllerAnton Bondarenko2015-12-071-3/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Similar to other controller type checks add check function for IMX51. It includes IMX53 and IMX6. Signed-off-by: Anton Bondarenko <anton.bondarenko.sama@gmail.com> Signed-off-by: Mark Brown <broonie@kernel.org>
| | | | | * | | spi: imx: replace multiple watermarks with single for RX, TX and RXTAnton Bondarenko2015-12-071-16/+13Star
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | There is no need to have different watermarks levels since they are the same. Merge them into one WML parameter. Signed-off-by: Anton Bondarenko <anton.bondarenko.sama@gmail.com> Signed-off-by: Mark Brown <broonie@kernel.org>
| | | | | * | | spi: imx: reorder HW operations enable order to avoid possible RX data lossAnton Bondarenko2015-12-071-2/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The overflow may happen due to rescheduling for another task and/or interrupt if we enable SPI HW before starting RX DMA. So RX DMA enabled first to make sure data would be read out from FIFO ASAP. TX DMA enabled next to start filling TX FIFO with new data. And finaly SPI HW enabled to start actual data transfer. The risk rise in case of heavy system load and high SPI clock. Signed-off-by: Anton Bondarenko <anton.bondarenko.sama@gmail.com> Signed-off-by: Mark Brown <broonie@kernel.org>
| | | | | * | | spi: imx: terminate RX DMA transaction in case of TX DMA timeoutAnton Bondarenko2015-12-071-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Not only TX DMA should be terminated, but RX DMA also. It's required to avoid accidential DMA memory writes from RX DMA channel and properly terminate transaction. Signed-off-by: Anton Bondarenko <anton.bondarenko.sama@gmail.com> Signed-off-by: Mark Brown <broonie@kernel.org>
| | | | | * | | spi: imx: Add loopback mode supportFabio Estevam2015-12-041-2/+13
| | | | | |/ / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Loopback mode can be activated by setting bit LBC (LoopBack Control) of register ECSPI_TESTREG. Add support for it. Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com> Signed-off-by: Mark Brown <broonie@kernel.org>
| | | | * / / spi: fsl-espi: expose maximum transfer size limitMichal Suchanek2016-01-051-0/+6
| | | | |/ / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The fsl-espi hardware can trasfer at most 64K data so report teh limitation. Based on patch by Heiner Kallweit <hkallweit1@gmail.com> CC: Heiner Kallweit <hkallweit1@gmail.com> Signed-off-by: Michal Suchanek <hramrach@gmail.com> Signed-off-by: Mark Brown <broonie@kernel.org>
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