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2020-09-29spi: dw: Disable all IRQs when controller is unusedSerge Semin1-5/+5
It's a good practice to disable all IRQs if a device is fully unused. In our case it is supposed to be done before requesting the IRQ and after the last byte of an SPI transfer is received. In the former case it's required to prevent the IRQ handler invocation before the driver data is fully initialized (which may happen if the IRQs status has been left uncleared before the device is probed). So we just moved the spi_hw_init() method invocation to the earlier stage before requesting the IRQ. In the later case there is just no point in having any of the IRQs enabled between SPI transfers and when there is no SPI message currently being processed. Signed-off-by: Serge Semin <Sergey.Semin@baikalelectronics.ru> Link: https://lore.kernel.org/r/20200920112914.26501-7-Sergey.Semin@baikalelectronics.ru Signed-off-by: Mark Brown <broonie@kernel.org>
2020-09-29spi: dw: Clear IRQ status on DW SPI controller resetSerge Semin1-3/+4
It turns out the IRQ status isn't cleared after switching the controller off and getting it back on, which may cause raising false error interrupts if controller has been unsuccessfully used by, for instance, a bootloader before the driver is loaded. Let's explicitly clear the interrupts status in the dedicated controller reset method. Signed-off-by: Serge Semin <Sergey.Semin@baikalelectronics.ru> Link: https://lore.kernel.org/r/20200920112914.26501-6-Sergey.Semin@baikalelectronics.ru Signed-off-by: Mark Brown <broonie@kernel.org>
2020-09-29spi: dw: Initialize n_bytes before the memory barrierSerge Semin1-1/+1
Since n_bytes field of the DW SPI private data is also utilized by the IRQ handler, we need to make sure it' initialization is done before the memory barrier. Signed-off-by: Serge Semin <Sergey.Semin@baikalelectronics.ru> Link: https://lore.kernel.org/r/20200920112914.26501-4-Sergey.Semin@baikalelectronics.ru Signed-off-by: Mark Brown <broonie@kernel.org>
2020-09-29spi: dw: Discard IRQ threshold macroSerge Semin1-3/+0
The macro has been unused since a half of FIFO length was defined to be a marker of the IRQ. Let's remove it definition. Signed-off-by: Serge Semin <Sergey.Semin@baikalelectronics.ru> Link: https://lore.kernel.org/r/20200920112914.26501-2-Sergey.Semin@baikalelectronics.ru Signed-off-by: Mark Brown <broonie@kernel.org>
2020-09-28spi: hisi-sfc-v3xx: fix spelling mistake "occured" -> "occurred"Colin Ian King1-1/+1
There is a spelling mistake in a dev_err message. Fix it. Signed-off-by: Colin Ian King <colin.king@canonical.com> Link: https://lore.kernel.org/r/20200928123042.125359-1-colin.king@canonical.com Signed-off-by: Mark Brown <broonie@kernel.org>
2020-09-25Merge series "Add IRQ mode support for hisi-sfc-v3xx driver and some ↵Mark Brown1-71/+190
cleanups" from Yicong Yang <yangyicong@hisilicon.com>: This series mainly add the IRQ mode support for hisi-sfc-v3xx driver, and some cleanups for the preparation of the IRQ mode. After this patch, the device can work in IRQ mode, or if firmware doesn't declare irq support it will fall back to Poll mode. Patch 1-2 refactor the .exec_op() path to make it simpler and clearer. Patch 3 factor the definition of the interrupt bits. Patch 4 add the IRQ support of the driver. Yicong Yang (4): spi: hisi-sfc-v3xx: factor out IO modes configuration spi: hisi-sfc-v3xx: factor out bus config and transfer functions spi: hisi-sfc-v3xx: factor out the bit definition of interrupt register spi: hisi-sfc-v3xx: add support for IRQ mode drivers/spi/spi-hisi-sfc-v3xx.c | 261 +++++++++++++++++++++++++++++----------- 1 file changed, 190 insertions(+), 71 deletions(-) -- 2.8.1 ______________________________________________________ Linux MTD discussion mailing list http://lists.infradead.org/mailman/listinfo/linux-mtd/
2020-09-25spi: spi-mtk-nor: fix timeout calculation overflowChuanhong Guo1-1/+5
CLK_TO_US macro is used to calculate potential transfer time for various timeout handling. However it overflows on transfer bigger than 512 bytes because it first did (len * 8 * 1000000). This controller typically operates at 45MHz. This patch did 2 things: 1. calculate clock / 1000000 first 2. add a 4M transfer size cap so that the final timeout in DMA reading doesn't overflow Fixes: 881d1ee9fe81f ("spi: add support for mediatek spi-nor controller") Cc: <stable@vger.kernel.org> Signed-off-by: Chuanhong Guo <gch981213@gmail.com> Link: https://lore.kernel.org/r/20200922114905.2942859-1-gch981213@gmail.com Signed-off-by: Mark Brown <broonie@kernel.org>
2020-09-25spi: hisi-sfc-v3xx: add support for IRQ modeYicong Yang1-22/+109
The controller can work with interrupts, so add support for it. Then we can work under IRQ mode or Poll mode now, if firmware doesn't declare the IRQ support, it will fall back to Poll mode. Acked-by: John Garry <john.garry@huawei.com> Signed-off-by: Yicong Yang <yangyicong@hisilicon.com> Link: https://lore.kernel.org/r/1600950270-52536-5-git-send-email-yangyicong@hisilicon.com Signed-off-by: Mark Brown <broonie@kernel.org>
2020-09-25spi: hisi-sfc-v3xx: factor out the bit definition of interrupt registerYicong Yang1-6/+10
The definition of the register field in the interrupt corresponding registers are the same. So factor them out to public place. Acked-by: John Garry <john.garry@huawei.com> Signed-off-by: Yicong Yang <yangyicong@hisilicon.com> Link: https://lore.kernel.org/r/1600950270-52536-4-git-send-email-yangyicong@hisilicon.com Signed-off-by: Mark Brown <broonie@kernel.org>
2020-09-25spi: hisi-sfc-v3xx: factor out bus config and transfer functionsYicong Yang1-9/+24
In hisi_sfc_v3xx_generic_exec_op(), we will write the data to the buffer, configure and start the transfer, read the data to the buffer and check whether occurs an error. Factor out the config and transfer start codes as individual functions, to make the process a bit clearer. Acked-by: John Garry <john.garry@huawei.com> Signed-off-by: Yicong Yang <yangyicong@hisilicon.com> Link: https://lore.kernel.org/r/1600950270-52536-3-git-send-email-yangyicong@hisilicon.com Signed-off-by: Mark Brown <broonie@kernel.org>
2020-09-25spi: hisi-sfc-v3xx: factor out IO modes configurationYicong Yang1-42/+55
Factor IO modes configuration out of hisi_sfc_v3xx_generic_exec_op() using an IO modes lookup table. This will make the process a bit clearer and reduce the cyclomatic complexity. Simplify the IO mode definition macros a little bit as well. Also add the .supports_op() method for the controller mem ops, in order to avoid OOB access. Acked-by: John Garry <john.garry@huawei.com> Signed-off-by: Yicong Yang <yangyicong@hisilicon.com> Link: https://lore.kernel.org/r/1600950270-52536-2-git-send-email-yangyicong@hisilicon.com Signed-off-by: Mark Brown <broonie@kernel.org>
2020-09-24spi: spi-zynqmp-gqspi: Fix incorrect indentationAmit Kumar Mahapatra1-23/+23
Fixed incorrect indentation in ZynqMP qspi controller driver. Signed-off-by: Amit Kumar Mahapatra <amit.kumar-mahapatra@xilinx.com> Signed-off-by: Michal Simek <michal.simek@xilinx.com> Link: https://lore.kernel.org/r/2b246b6f0925c8a2a767a4240e8738ffeefd62be.1600931476.git.michal.simek@xilinx.com Signed-off-by: Mark Brown <broonie@kernel.org>
2020-09-24spi: spi-zynqmp-gqspi: Update driver to use spi-mem frameworkAmit Kumar Mahapatra1-276/+369
Updated Zynqmp qspi controller driver to use spi-mem framework. Signed-off-by: Amit Kumar Mahapatra <amit.kumar-mahapatra@xilinx.com> Signed-off-by: Michal Simek <michal.simek@xilinx.com> Link: https://lore.kernel.org/r/490a7642a975f4d3dd9618304e9e45f7e2414661.1600931476.git.michal.simek@xilinx.com Signed-off-by: Mark Brown <broonie@kernel.org>
2020-09-24spi: spi-zynqmp-gqspi: Fix kernel-doc warningsAmit Kumar Mahapatra1-22/+23
Fix kernel-doc warnings in ZynqMP qspi driver file. Signed-off-by: Amit Kumar Mahapatra <amit.kumar-mahapatra@xilinx.com> Signed-off-by: Michal Simek <michal.simek@xilinx.com> Link: https://lore.kernel.org/r/ba5920c57eee06fafa6f9d1df9859e69819ac301.1600931476.git.michal.simek@xilinx.com Signed-off-by: Mark Brown <broonie@kernel.org>
2020-09-23spi: spi-imx: spi_imx_transfer(): add support for effective_speed_hzMarc Kleine-Budde1-0/+2
This patch implementes the reporting of the effectivly used speed_hz for the transfer by setting tfr->effective_speed_hz. See the following patch, which adds this feature to the SPI core for more information: 5d7e2b5ed585 spi: core: allow reporting the effectivly used speed_hz for a transfer Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de> Link: https://lore.kernel.org/r/20200917202420.1914104-1-mkl@pengutronix.de Signed-off-by: Mark Brown <broonie@kernel.org>
2020-09-22spi: omap2-mcspi: Improve performance waiting for CHSTATAswath Govindraju1-4/+13
This reverts commit 13d515c796 (spi: omap2-mcspi: Switch to readl_poll_timeout()). The amount of time spent polling for the MCSPI_CHSTAT bits to be set on AM335x-icev2 platform is less than 1us (about 0.6us) in most cases, with or without using DMA. So, in most cases the function need not sleep. Also, setting the sleep_usecs to zero would not be optimal here because ktime_add_us() used in readl_poll_timeout() is slower compared to the direct addition used after the revert. So, it is sub-optimal to use readl_poll_timeout in this case. When DMA is not enabled, this revert results in an increase of about 27% in throughput and decrease of about 20% in CPU usage. However, the CPU usage and throughput are almost the same when used with DMA. Therefore, fix this by reverting the commit which switched to using readl_poll_timeout(). Fixes: 13d515c796ad ("spi: omap2-mcspi: Switch to readl_poll_timeout()") Signed-off-by: Aswath Govindraju <a-govindraju@ti.com> Link: https://lore.kernel.org/r/20200910122624.8769-1-a-govindraju@ti.com Signed-off-by: Mark Brown <broonie@kernel.org>
2020-09-22spi: npcm-fiu: simplify the return expression of npcm_fiu_probe()Qinglang Miao1-6/+1
Simplify the return expression. Signed-off-by: Qinglang Miao <miaoqinglang@huawei.com> Link: https://lore.kernel.org/r/20200921131106.93228-1-miaoqinglang@huawei.com Signed-off-by: Mark Brown <broonie@kernel.org>
2020-09-21spi/topcliff-pch: drop double zeroingJulia Lawall1-2/+2
sg_init_table zeroes its first argument, so the allocation of that argument doesn't have to. the semantic patch that makes this change is as follows: (http://coccinelle.lip6.fr/) // <smpl> @@ expression x,n,flags; @@ x = - kcalloc + kmalloc_array (n,sizeof(*x),flags) ... sg_init_table(x,n) // </smpl> Signed-off-by: Julia Lawall <Julia.Lawall@inria.fr> Link: https://lore.kernel.org/r/1600601186-7420-12-git-send-email-Julia.Lawall@inria.fr Signed-off-by: Mark Brown <broonie@kernel.org>
2020-09-17Merge series "spi: Fixes for FSI-attached controller" from Eddie James ↵Mark Brown2-31/+109
<eajames@linux.ibm.com>: This series implements a number of fixes for the FSI-attached SPI controller driver. Changes since v1: - Switch to a new compatible string for the restricted version of the SPI controller, rather than a new boolean parameter. Brad Bishop (3): spi: fsi: Handle 9 to 15 byte transfers lengths spi: fsi: Fix clock running too fast spi: fsi: Fix use of the bneq+ sequencer instruction Eddie James (3): dt-bindings: fsi: fsi2spi: Add compatible string for restricted version spi: fsi: Implement restricted size for certain controllers spi: fsi: Check mux status before transfers .../devicetree/bindings/fsi/ibm,fsi2spi.yaml | 1 + drivers/spi/spi-fsi.c | 139 ++++++++++++++---- 2 files changed, 109 insertions(+), 31 deletions(-) -- 2.26.2
2020-09-17spi: dw-pci: free previously allocated IRQs if desc->setup() failsJay Fang1-7/+9
Free previously allocated IRQs when return an error code of desc->setup() which is not always successful. And simplify the code by adding a goto label. Fixes: 8f5c285f3ef5 ("SPI: designware: pci: Switch over to MSI interrupts") CC: Felipe Balbi <felipe.balbi@linux.intel.com> Signed-off-by: Jay Fang <f.fangjian@huawei.com> Link: https://lore.kernel.org/r/1600132969-53037-1-git-send-email-f.fangjian@huawei.com Signed-off-by: Mark Brown <broonie@kernel.org>
2020-09-17spi: spi-nxp-fspi: Add ACPI supportkuldip dwivedi1-19/+50
Currently NXP fspi driver has support of DT only. Adding ACPI support to the driver so that it can be used by UEFI firmware booting in ACPI mode. This driver will be probed if any firmware will expose HID "NXP0009" in DSDT table. Signed-off-by: kuldip dwivedi <kuldip.dwivedi@puresoftware.com> Reviewed-by: Ashish Kumar <Ashish.Kumar@nxp.com> Link: https://lore.kernel.org/r/20200911130331.6313-1-kuldip.dwivedi@puresoftware.com Signed-off-by: Mark Brown <broonie@kernel.org>
2020-09-17spi: lantiq: remove redundant irqsave and irqrestore in hardIRQBarry Song1-7/+5
Running in hardIRQ, disabling irq is redundant. Signed-off-by: Barry Song <song.bao.hua@hisilicon.com> Link: https://lore.kernel.org/r/20200916101042.21860-1-song.bao.hua@hisilicon.com Signed-off-by: Mark Brown <broonie@kernel.org>
2020-09-17spi: xilinx: Fix info message during probeRicardo Ribalda1-2/+1
The info message was showing the mapped address of the device. To avoid security problems, all virtual addresses are converted to __ptrval__, so the message was useless/ugly: [ 2.304949] xilinx_spi b0010000.spi-flash: at 0xB0010000 mapped to 0x(____ptrval____), irq=37 Use %pR instead: [ 15.021354] xilinx_spi b0010000.spi-flash: at [mem 0xb0010000-0xb001ffff], irq=37 Signed-off-by: Ricardo Ribalda <ribalda@kernel.org> Acked-by: Michal Simek <michal.simek@xilinx.com> Link: https://lore.kernel.org/r/20200915112936.320647-1-ribalda@kernel.org Signed-off-by: Mark Brown <broonie@kernel.org>
2020-09-17spi: fsi: fsi2spi: Add compatible string for restricted versionEddie James1-0/+1
Add a compatible string for the restricted version of the SPI controller. The restricted version cannot process sequence loop operations and therefore has a smaller transfer size. Signed-off-by: Eddie James <eajames@linux.ibm.com> Link: https://lore.kernel.org/r/20200909222857.28653-5-eajames@linux.ibm.com Signed-off-by: Mark Brown <broonie@kernel.org>
2020-09-17spi: fsi: Check mux status before transfersEddie James1-13/+27
The SPI controllers are not accessible if the mux isn't set. Therefore, check the mux status before starting a transfer and fail out if it isn't set. Signed-off-by: Eddie James <eajames@linux.ibm.com> Signed-off-by: Joel Stanley <joel@jms.id.au> Link: https://lore.kernel.org/r/20200909222857.28653-7-eajames@linux.ibm.com Signed-off-by: Mark Brown <broonie@kernel.org>
2020-09-17spi: fsi: Implement restricted size for certain controllersEddie James1-12/+53
Some of the FSI-attached SPI controllers cannot use the loop command in programming the sequencer due to security requirements. Check the devicetree compatibility that indicates this condition and restrict the size for these controllers. Also, add more transfers directly in the sequence up to the length of the sequence register. Fixes: bbb6b2f9865b ("spi: Add FSI-attached SPI controller driver") Signed-off-by: Eddie James <eajames@linux.ibm.com> Reviewed-by: Joel Stanley <joel@jms.id.au> Signed-off-by: Joel Stanley <joel@jms.id.au> Link: https://lore.kernel.org/r/20200909222857.28653-6-eajames@linux.ibm.com Signed-off-by: Mark Brown <broonie@kernel.org>
2020-09-17spi: fsi: Fix use of the bneq+ sequencer instructionBrad Bishop1-3/+25
All of the switches in N2_count_control in the counter configuration are required to make the branch if not equal and increment command work. Set them when using bneq+. A side effect of this mode requires a dummy write to TDR when both transmitting and receiving otherwise the controller won't start shifting receive data. It is likely not possible to avoid TDR underrun errors in this mode and they are harmless, so do not check for them. Fixes: bbb6b2f9865b ("spi: Add FSI-attached SPI controller driver") Signed-off-by: Brad Bishop <bradleyb@fuzziesquirrel.com> Signed-off-by: Eddie James <eajames@linux.ibm.com> Reviewed-by: Joel Stanley <joel@jms.id.au> Signed-off-by: Joel Stanley <joel@jms.id.au> Link: https://lore.kernel.org/r/20200909222857.28653-4-eajames@linux.ibm.com Signed-off-by: Mark Brown <broonie@kernel.org>
2020-09-17spi: fsi: Fix clock running too fastBrad Bishop1-1/+1
Use a clock divider tuned to a 200MHz FSI bus frequency (the maximum). Use of the previous divider at 200MHz results in corrupt data from endpoint devices. Ideally the clock divider would be calculated from the FSI clock, but that would require some significant work on the FSI driver. With FSI frequencies slower than 200MHz, the SPI clock will simply run slower, but safely. Signed-off-by: Brad Bishop <bradleyb@fuzziesquirrel.com> Signed-off-by: Eddie James <eajames@linux.ibm.com> Signed-off-by: Joel Stanley <joel@jms.id.au> Link: https://lore.kernel.org/r/20200909222857.28653-3-eajames@linux.ibm.com Signed-off-by: Mark Brown <broonie@kernel.org>
2020-09-17spi: fsi: Handle 9 to 15 byte transfers lengthsBrad Bishop1-3/+3
The trailing <len> - 8 bytes of transfer data in this size range is no longer ignored. Fixes: bbb6b2f9865b ("spi: Add FSI-attached SPI controller driver") Signed-off-by: Brad Bishop <bradleyb@fuzziesquirrel.com> Signed-off-by: Eddie James <eajames@linux.ibm.com> Reviewed-by: Joel Stanley <joel@jms.id.au> Signed-off-by: Joel Stanley <joel@jms.id.au> Link: https://lore.kernel.org/r/20200909222857.28653-2-eajames@linux.ibm.com Signed-off-by: Mark Brown <broonie@kernel.org>
2020-09-14spi: sprd: Simplify with dev_err_probe()Krzysztof Kozlowski2-16/+6
Common pattern of handling deferred probe can be simplified with dev_err_probe(). Less code and the error value gets printed. Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org> Acked-by: Chunyan Zhang <zhang.lyra@gmail.com> Link: https://lore.kernel.org/r/20200910160706.5883-1-krzk@kernel.org Signed-off-by: Mark Brown <broonie@kernel.org>
2020-09-14spi: spi-geni-qcom: Don't wait to start 1st transfer if transmittingDouglas Anderson1-81/+86
If we're sending bytes over SPI, we know the FIFO is empty at the start of the transfer. There's no reason to wait for the interrupt telling us to start--we can just start right away. Then if we transmit everything in one swell foop we don't even need to bother listening for TX interrupts. In a test of "flashrom -p ec -r /tmp/foo.bin" interrupts were reduced from ~30560 to ~29730, about a 3% savings. This patch looks bigger than it is because I moved a few functions rather than adding a forward declaration. The only actual change to geni_spi_handle_tx() was to make it return a bool indicating if there is more to tx. Signed-off-by: Douglas Anderson <dianders@chromium.org> Reviewed-by: Akash Asthana <akashast@codeaurora.org> Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org> Link: https://lore.kernel.org/r/20200912111716.1.Ied5e843fad0d6b733a1fb8bcfb364dd2fa889eb3@changeid Signed-off-by: Mark Brown <broonie@kernel.org>
2020-09-14spi: bcm2835: Make polling_limit_us staticJason Yan1-1/+1
This eliminates the following sparse warning: drivers/spi/spi-bcm2835.c:78:14: warning: symbol 'polling_limit_us' was not declared. Should it be static? Reported-by: Hulk Robot <hulkci@huawei.com> Signed-off-by: Jason Yan <yanaijie@huawei.com> Link: https://lore.kernel.org/r/20200912072211.602735-1-yanaijie@huawei.com Signed-off-by: Mark Brown <broonie@kernel.org>
2020-09-14spi: spi-fsl-dspi: use XSPI mode instead of DMA for DPAA2 SoCsVladimir Oltean1-3/+3
The arch/arm64/boot/dts/freescale/fsl-ls208xa.dtsi device tree lacks DMA channels for DSPI, so naturally, the driver fails to probe: [ 2.945302] fsl-dspi 2100000.spi: rx dma channel not available [ 2.951134] fsl-dspi 2100000.spi: can't get dma channels In retrospect, this should have been obvious, because LS2080A, LS2085A LS2088A and LX2160A don't appear to have an eDMA module at all. Looking again at their datasheets, the CTARE register (which is specific to XSPI functionality) seems to be documented, so switch them to XSPI mode instead. Fixes: 0feaf8f5afe0 ("spi: spi-fsl-dspi: Convert the instantiations that support it to DMA") Reported-by: Qiang Zhao <qiang.zhao@nxp.com> Tested-by: Qiang Zhao <qiang.zhao@nxp.com> Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com> Link: https://lore.kernel.org/r/20200910121532.1138596-1-olteanv@gmail.com Signed-off-by: Mark Brown <broonie@kernel.org>
2020-09-14spi: spi-geni-qcom: Don't program CS_TOGGLE again and againDouglas Anderson1-5/+7
We always toggle the chip select manually in spi-geni-qcom so that we can properly implement the Linux API. There's no reason to program this to the hardware on every transfer. Program it once at init and be done with it. This saves some part of a microsecond of overhead on each transfer. While not really noticeable on any real world benchmarks, we might as well save the time. Signed-off-by: Douglas Anderson <dianders@chromium.org> Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org> Link: https://lore.kernel.org/r/20200912140730.2.I33e571179986850b4ec17042e813d0b08fb1b9c1@changeid Signed-off-by: Mark Brown <broonie@kernel.org>
2020-09-14spi: spi-geni-qcom: Use the FIFO even moreDouglas Anderson1-1/+1
In commit 902481a78ee4 ("spi: spi-geni-qcom: Actually use our FIFO") I explained that the maximum size we could program the FIFO was "mas->tx_fifo_depth - 3" but that I chose "mas->tx_fifo_depth()" because I was worried about decreased bandwidth. Since that time: * All the interconnect patches have landed, making things run at the proper speed. * I've done more measurements. This lets me confirm that there's really no downside of using the FIFO more. Specifically I did "flashrom -p ec -r /tmp/foo.bin" on a Chromebook and averaged over several runs. Before: It took 6.66 seconds and 59669 interrupts fired. After: It took 6.66 seconds and 47992 interrupts fired. Signed-off-by: Douglas Anderson <dianders@chromium.org> Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org> Link: https://lore.kernel.org/r/20200912140730.1.Ie67fa32009b94702d56232c064f1d89065ee8836@changeid Signed-off-by: Mark Brown <broonie@kernel.org>
2020-09-14spi: spi-qcom-qspi: replace spin_lock_irqsave by spin_lock in hard IRQBarry Song1-3/+2
It is redundant to do irqsave and irqrestore in hardIRQ context. Cc: Andy Gross <agross@kernel.org> Cc: Bjorn Andersson <bjorn.andersson@linaro.org> Signed-off-by: Barry Song <song.bao.hua@hisilicon.com> Link: https://lore.kernel.org/r/20200910100246.32696-1-song.bao.hua@hisilicon.com Signed-off-by: Mark Brown <broonie@kernel.org>
2020-09-14spi: Add compatible string for brcmstb SoCsRay Jui1-0/+2
Add compatible string for brcmstb 7445 SoCs. Signed-off-by: Ray Jui <ray.jui@broadcom.com> Acked-by: Florian Fainelli <f.fainelli@gmail.com> Link: https://lore.kernel.org/r/20200910152539.45584-1-ray.jui@broadcom.com Signed-off-by: Mark Brown <broonie@kernel.org>
2020-09-14spi: bcm-qspi: Clean up 7425, 7429, and 7435 settingsRay Jui1-12/+0
The Broadcom QSPI driver now falls back to no MSPI_DEV support as the default setting in the generic compatible string, explicit settings for STB chips 7425, 7429, and 7435 can be removed. Signed-off-by: Ray Jui <ray.jui@broadcom.com> Acked-by: Florian Fainelli <f.fainelli@gmail.com> Link: https://lore.kernel.org/r/20200910152539.45584-4-ray.jui@broadcom.com Signed-off-by: Mark Brown <broonie@kernel.org>
2020-09-14spi: bcm-qspi: Fix probe regression on iProc platformsRay Jui1-1/+1
iProc chips have QSPI controller that does not have the MSPI_REV offset. Reading from that offset will cause a bus error. Fix it by having MSPI_REV query disabled in the generic compatible string. Fixes: 3a01f04d74ef ("spi: bcm-qspi: Handle lack of MSPI_REV offset") Link: https://lore.kernel.org/linux-arm-kernel/20200909211857.4144718-1-f.fainelli@gmail.com/T/#u Signed-off-by: Ray Jui <ray.jui@broadcom.com> Acked-by: Florian Fainelli <f.fainelli@gmail.com> Link: https://lore.kernel.org/r/20200910152539.45584-3-ray.jui@broadcom.com Signed-off-by: Mark Brown <broonie@kernel.org>
2020-09-14spi: bcm-qspi: Add compatible string for BRCMSTB 7445 SoCsRay Jui1-0/+5
Add compatible string for BRCMSTB 7445 SoCs and indicate it has MSPI rev support. Signed-off-by: Ray Jui <ray.jui@broadcom.com> Acked-by: Florian Fainelli <f.fainelli@gmail.com> Link: https://lore.kernel.org/r/20200910152539.45584-2-ray.jui@broadcom.com Signed-off-by: Mark Brown <broonie@kernel.org>
2020-09-14spi: qup: remove redundant assignment to variable retColin Ian King1-1/+1
The variable ret is being initialized with a value that is never read and it is being updated later with a new value. The initialization is redundant and can be removed. Addresses-Coverity: ("Unused value") Signed-off-by: Colin Ian King <colin.king@canonical.com> Link: https://lore.kernel.org/r/20200910150410.750959-1-colin.king@canonical.com Signed-off-by: Mark Brown <broonie@kernel.org>
2020-09-09Merge series "opp: Unconditionally call dev_pm_opp_of_remove_table()" from ↵Mark Brown1735-6096/+9163
Viresh Kumar <viresh.kumar@linaro.org>: Hello, This cleans up some of the user code around calls to dev_pm_opp_of_remove_table(). All the patches can be picked by respective maintainers directly except for the last patch, which needs the previous two to get merged first. These are based for 5.9-rc1. Rajendra, Since most of these changes are related to qcom stuff, it would be great if you can give them a try. I wasn't able to test them due to lack of hardware. Ulf, I had to revise the sdhci patch, sorry about that. Please pick this one. Diff between V1 and V2 is mentioned in each of the patches separately. Viresh Kumar (8): cpufreq: imx6q: Unconditionally call dev_pm_opp_of_remove_table() drm/lima: Unconditionally call dev_pm_opp_of_remove_table() drm/msm: Unconditionally call dev_pm_opp_of_remove_table() mmc: sdhci-msm: Unconditionally call dev_pm_opp_of_remove_table() spi: spi-geni-qcom: Unconditionally call dev_pm_opp_of_remove_table() spi: spi-qcom-qspi: Unconditionally call dev_pm_opp_of_remove_table() tty: serial: qcom_geni_serial: Unconditionally call dev_pm_opp_of_remove_table() qcom-geni-se: remove has_opp_table drivers/cpufreq/imx6q-cpufreq.c | 10 ++-------- drivers/gpu/drm/lima/lima_devfreq.c | 6 +----- drivers/gpu/drm/lima/lima_devfreq.h | 1 - drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c | 14 +++++--------- drivers/gpu/drm/msm/disp/dpu1/dpu_kms.h | 1 - drivers/gpu/drm/msm/dsi/dsi_host.c | 8 ++------ drivers/mmc/host/sdhci-msm.c | 14 +++++--------- drivers/spi/spi-geni-qcom.c | 13 +++++-------- drivers/spi/spi-qcom-qspi.c | 15 ++++++--------- drivers/tty/serial/qcom_geni_serial.c | 13 +++++-------- include/linux/qcom-geni-se.h | 2 -- 11 files changed, 31 insertions(+), 66 deletions(-) base-commit: f4d51dffc6c01a9e94650d95ce0104964f8ae822 -- 2.25.0.rc1.19.g042ed3e048af
2020-09-09spi: spidev: Remove redundant initialization of variable statusJay Fang1-2/+2
In spidev_read() and spidev_write(), the variable status is being initialized with a value that is never read and it is being updated later with a new value. The initialization is redundant and can be removed. Signed-off-by: Jay Fang <f.fangjian@huawei.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://lore.kernel.org/r/1599631704-53232-1-git-send-email-f.fangjian@huawei.com Signed-off-by: Mark Brown <broonie@kernel.org>
2020-09-09spi: spi-qcom-qspi: Unconditionally call dev_pm_opp_of_remove_table()Viresh Kumar1-9/+6
dev_pm_opp_of_remove_table() doesn't report any errors when it fails to find the OPP table with error -ENODEV (i.e. OPP table not present for the device). And we can call dev_pm_opp_of_remove_table() unconditionally here. While at it, create a new label and put clkname on errors. Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Link: https://lore.kernel.org/r/b77aa0bbe82a580508e321a34da488b4b27966d0.1598594714.git.viresh.kumar@linaro.org Signed-off-by: Mark Brown <broonie@kernel.org>
2020-09-09spi: spi-geni-qcom: Unconditionally call dev_pm_opp_of_remove_table()Viresh Kumar1-8/+5
dev_pm_opp_of_remove_table() doesn't report any errors when it fails to find the OPP table with error -ENODEV (i.e. OPP table not present for the device). And we can call dev_pm_opp_of_remove_table() unconditionally here. While at it, create a new label and put clkname on errors. Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Link: https://lore.kernel.org/r/ea0864d41277e61fa31d304fbd4cf9af6b314269.1598594714.git.viresh.kumar@linaro.org Signed-off-by: Mark Brown <broonie@kernel.org>
2020-09-08Merge series "spi: Adding support for Microchip Sparx5 SoC" from Lars ↵Mark Brown4-1/+119
Povlsen <lars.povlsen@microchip.com>: The series add support for the Sparx5 SoC SPI controller in the spi-dw-mmio.c spi driver. v5 changes: - rx-sample-delay-ns documentation changes from Rob Herring: - Drop superfluous type $ref - Add default value = 0 v4 changes: - Changed snps,rx-sample-delay-ns to snps,rx-sample-delay-ns suggested by Rob Herring (rockchip also has this property). - Added support for controller-level rx-sample-delay-ns value as well as per SPI slave value (rockchip has controller-level property). - Dropped internal mux in favor of suggested spi-mux to control bus inteface selection. v3 changes: - Added mux support for controlling SPI bus interface. This is new mux driver, bindings and added to sparx5 base DT. - Removed "microchip,spi-interface2" property in favour of "mux-controls" property in SPI controller (sparx5 only). - Changed dw_spi_sparx5_set_cs() to use the mux control instead of directly acessing "mux" register. Associated code/defines moved to mux driver. - Changed dw_spi_sparx5_set_cs() to match other similar functions in signature and avoid explicit CS toggling. - Spun off duplicated NAND device DT chunks into separate DT file. v2 changes: - Moved all RX sample delay into spi-dw-core.c, using the "snps,rx-sample-delay-ns" device property. - Integrated Sparx5 support directly in spi-dw-mmio.c - Changed SPI2 configuration to per-slave "microchip,spi-interface2" property. - Added bindings to existing snps,dw-apb-ssi.yaml file - Dropped patches for polled mode and SPI memory operations. Lars Povlsen (6): spi: dw: Add support for RX sample delay register spi: dw: Add Microchip Sparx5 support arm64: dts: sparx5: Add SPI controller and associated mmio-mux dt-bindings: snps,dw-apb-ssi: Add sparx5 support, plus rx-sample-delay-ns property arm64: dts: sparx5: Add spi-nor support arm64: dts: sparx5: Add spi-nand devices .../bindings/spi/snps,dw-apb-ssi.yaml | 21 ++++++ arch/arm64/boot/dts/microchip/sparx5.dtsi | 47 ++++++++++++- .../arm64/boot/dts/microchip/sparx5_nand.dtsi | 31 ++++++++ .../boot/dts/microchip/sparx5_pcb125.dts | 30 ++++++++ .../boot/dts/microchip/sparx5_pcb134.dts | 1 + .../dts/microchip/sparx5_pcb134_board.dtsi | 16 +++++ .../boot/dts/microchip/sparx5_pcb135.dts | 1 + .../dts/microchip/sparx5_pcb135_board.dtsi | 16 +++++ drivers/spi/spi-dw-core.c | 26 +++++++ drivers/spi/spi-dw-mmio.c | 70 ++++++++++++++++++- drivers/spi/spi-dw.h | 3 + 11 files changed, 260 insertions(+), 2 deletions(-) create mode 100644 arch/arm64/boot/dts/microchip/sparx5_nand.dtsi -- 2.27.0 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
2020-09-08spi: spi-mtk-nor: support standard spi propertiesIkjoon Jang1-13/+16
Use default supports_op() to support spi-[rt]x-bus-width properties. And check dummy op's byte length instead of its bus width for output. Signed-off-by: Ikjoon Jang <ikjn@chromium.org> Link: https://lore.kernel.org/r/20200826091852.519138-1-ikjn@chromium.org Signed-off-by: Mark Brown <broonie@kernel.org>
2020-09-08spi: tegra20: Simplify with dev_err_probe()Krzysztof Kozlowski1-7/+3
Common pattern of handling deferred probe can be simplified with dev_err_probe(). Less code and the error value gets printed. Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org> Link: https://lore.kernel.org/r/20200901152713.18629-11-krzk@kernel.org Signed-off-by: Mark Brown <broonie@kernel.org>
2020-09-08spi: tegra114: Simplify with dev_err_probe()Krzysztof Kozlowski1-8/+3
Common pattern of handling deferred probe can be simplified with dev_err_probe(). Less code and the error value gets printed. Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org> Link: https://lore.kernel.org/r/20200901152713.18629-10-krzk@kernel.org Signed-off-by: Mark Brown <broonie@kernel.org>
2020-09-08spi: synquacer: Simplify with dev_err_probe()Krzysztof Kozlowski1-3/+2
Common pattern of handling deferred probe can be simplified with dev_err_probe(). Less code and the error value gets printed. Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org> Link: https://lore.kernel.org/r/20200901152713.18629-9-krzk@kernel.org Signed-off-by: Mark Brown <broonie@kernel.org>
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