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2023-07-20spi: fix return value check in bcm2835_spi_probe()Yuanjun Gong
in bcm2835_spi_probe(), clk_prepare_enable() may fail, therefore, the return value of clk_prepare_enable() should be checked, and the function should return error if clk_prepare_enable() fails. Signed-off-by: Yuanjun Gong <ruc_gongyuanjun@163.com> Link: https://lore.kernel.org/r/20230720140859.33883-1-ruc_gongyuanjun@163.com Signed-off-by: Mark Brown <broonie@kernel.org>
2023-07-19spi: rzv2m-csi: Make use of device_set_nodeFabrizio Castro
Use device_set_node instead of assigning controller->dev.of_node directly because it also sets the firmware node. Signed-off-by: Fabrizio Castro <fabrizio.castro.jz@renesas.com> Suggested-by: Andy Shevchenko <andy.shevchenko@gmail.com> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> Link: https://lore.kernel.org/r/20230718192453.543549-5-fabrizio.castro.jz@renesas.com Signed-off-by: Mark Brown <broonie@kernel.org>
2023-07-19spi: rzv2m-csi: Get rid of the x_trg{_words} tablesFabrizio Castro
Table x_trg can be replaced with ilog2(), and table x_trg_words can be replaced with rounddown_pow_of_two(). Replace the tables usage with the corresponding macros. While at it, remove a couple of unnecessary empty lines. Signed-off-by: Fabrizio Castro <fabrizio.castro.jz@renesas.com> Suggested-by: Andy Shevchenko <andy.shevchenko@gmail.com> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://lore.kernel.org/r/20230718192453.543549-4-fabrizio.castro.jz@renesas.com Signed-off-by: Mark Brown <broonie@kernel.org>
2023-07-19spi: rzv2m-csi: Improve data types, casting and alignmentFabrizio Castro
"unsigned int" is more appropriate than "int" for the members of "struct rzv2m_csi_priv". Using void* rather than u8* for txbuf and rxbuf allows for the removal of some type casting. Remove the unnecessary casting of "data" to "struct rzv2m_csi_priv*" in function "rzv2m_csi_irq_handler". Also, members "bytes_per_word" and "errors" introduce gaps in the structure. Adjust "struct rzv2m_csi_priv" and its members usage accordingly. Signed-off-by: Fabrizio Castro <fabrizio.castro.jz@renesas.com> Suggested-by: Geert Uytterhoeven <geert+renesas@glider.be> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://lore.kernel.org/r/20230718192453.543549-3-fabrizio.castro.jz@renesas.com Signed-off-by: Mark Brown <broonie@kernel.org>
2023-07-19spi: rzv2m-csi: Squash timing settings into one statementFabrizio Castro
Register CLKSEL hosts the configuration for both clock polarity and data phase, and both values can be set in one write operation. Squash the clock polarity and data phase register writes into one statement, for efficiency. Signed-off-by: Fabrizio Castro <fabrizio.castro.jz@renesas.com> Suggested-by: Andy Shevchenko <andy.shevchenko@gmail.com> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> Link: https://lore.kernel.org/r/20230718192453.543549-2-fabrizio.castro.jz@renesas.com Signed-off-by: Mark Brown <broonie@kernel.org>
2023-07-18spi: rzv2m-csi: Code refactoringMark Brown
Merge series from Fabrizio Castro <fabrizio.castro.jz@renesas.com>: This series is to follow up on Geert and Andy feedback: https://patchwork.kernel.org/project/linux-renesas-soc/patch/20230622113341.657842-4-fabrizio.castro.jz@renesas.com/
2023-07-18spi: spi-fsl-lpspi: Read chip-select amount from hardware for i.MX93Alexander Stein
PARAM.PCSNUM register on i.MX93 indicates the number of supported (hw) chip-selects. LPSPI4 has 3 while others have only 2. Still allow overwriting from DT. Signed-off-by: Alexander Stein <alexander.stein@ew.tq-group.com> Link: https://lore.kernel.org/r/20230717085934.409476-3-alexander.stein@ew.tq-group.com Signed-off-by: Mark Brown <broonie@kernel.org>
2023-07-18spi: spi-fsl-lpspi: Move controller initialization further downAlexander Stein
This is a preparation for reading number of chip-selects from hardware. This needs IO resources mapped and peripheral clocking enabled. No functional changes intended. Signed-off-by: Alexander Stein <alexander.stein@ew.tq-group.com> Link: https://lore.kernel.org/r/20230717085934.409476-2-alexander.stein@ew.tq-group.com Signed-off-by: Mark Brown <broonie@kernel.org>
2023-07-17spi: rzv2m-csi: Replace unnecessary ternary operatorsFabrizio Castro
The ternary operators used to initialize tx_completed and rx_completed are not necessary, replace them with a better implementation. Signed-off-by: Fabrizio Castro <fabrizio.castro.jz@renesas.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> Link: https://lore.kernel.org/r/20230715010407.1751715-6-fabrizio.castro.jz@renesas.com Signed-off-by: Mark Brown <broonie@kernel.org>
2023-07-17spi: rzv2m-csi: Leave readl_poll_timeout calls for lastFabrizio Castro
Both rzv2m_csi_sw_reset and rzv2m_csi_start_stop_operation call into readl_poll_timeout upon a certain condition, and return 0 otherwise. Flip the logic to improve readability. Signed-off-by: Fabrizio Castro <fabrizio.castro.jz@renesas.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> Link: https://lore.kernel.org/r/20230715010407.1751715-5-fabrizio.castro.jz@renesas.com Signed-off-by: Mark Brown <broonie@kernel.org>
2023-07-17spi: rzv2m-csi: Rework CSI_CKS_MAX definitionFabrizio Castro
Clock "csiclk" gets divided by 2 * CSI_CLKSEL_CKS in order to generate the serial clock (output from master), with CSI_CLKSEL_CKS ranging from 0x1 (that means "csiclk" is divided by 2) to 0x3FFF ("csiclk" is divided by 32766). CSI_CKS_MAX is used for referring to the setting corresponding to the maximum frequency divider. Value 0x3FFF for CSI_CKS_MAX doesn't really means much to the reader without an explanation and a more readable definition. Add a comment with a meaningful description and also replace value 0x3FFF with the corresponding GENMASK, to make it very clear what the macro means. Signed-off-by: Fabrizio Castro <fabrizio.castro.jz@renesas.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> Link: https://lore.kernel.org/r/20230715010407.1751715-4-fabrizio.castro.jz@renesas.com Signed-off-by: Mark Brown <broonie@kernel.org>
2023-07-17spi: rzv2m-csi: Adopt HZ_PER_MHZ for max spi clockFabrizio Castro
Make use of HZ_PER_MHZ for CSI_MAX_SPI_SCKO to make it clear what its value means. Signed-off-by: Fabrizio Castro <fabrizio.castro.jz@renesas.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> Link: https://lore.kernel.org/r/20230715010407.1751715-3-fabrizio.castro.jz@renesas.com Signed-off-by: Mark Brown <broonie@kernel.org>
2023-07-17spi: rzv2m-csi: Add missing includeFabrizio Castro
Add missing include of bits.h file. Signed-off-by: Fabrizio Castro <fabrizio.castro.jz@renesas.com> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> Link: https://lore.kernel.org/r/20230715010407.1751715-2-fabrizio.castro.jz@renesas.com Signed-off-by: Mark Brown <broonie@kernel.org>
2023-07-17spi: spi-fsl-lpspi: Remove num_cs from device structAlexander Stein
This is only used during probe() call, so there is no need to store it longer than that. Signed-off-by: Alexander Stein <alexander.stein@ew.tq-group.com> Link: https://lore.kernel.org/r/20230705090145.1354663-1-alexander.stein@ew.tq-group.com Signed-off-by: Mark Brown <broonie@kernel.org>
2023-07-14spi: Explicitly include correct DT includesRob Herring
The DT of_device.h and of_platform.h date back to the separate of_platform_bus_type before it as merged into the regular platform bus. As part of that merge prepping Arm DT support 13 years ago, they "temporarily" include each other. They also include platform_device.h and of.h. As a result, there's a pretty much random mix of those include files used throughout the tree. In order to detangle these headers and replace the implicit includes with struct declarations, users need to explicitly include the correct includes. Signed-off-by: Rob Herring <robh@kernel.org> Link: https://lore.kernel.org/r/20230714174955.4064174-1-robh@kernel.org Signed-off-by: Mark Brown <broonie@kernel.org>
2023-07-14spi: Use struct_size() helperAndy Shevchenko
The Documentation/process/deprecated.rst suggests to use flexible array members to provide a way to declare having a dynamically sized set of trailing elements in a structure.This makes code robust agains bunch of the issues described in the documentation, main of which is about the correctness of the sizeof() calculation for this data structure. Due to above, prefer struct_size() over open-coded versions. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Link: https://lore.kernel.org/r/20230714091748.89681-5-andriy.shevchenko@linux.intel.com Signed-off-by: Mark Brown <broonie@kernel.org>
2023-07-14spi: Use BITS_TO_BYTES()Andy Shevchenko
BITS_TO_BYTES() is the existing macro which takes care about full bytes that may fully hold the given amount of bits. Use it. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Link: https://lore.kernel.org/r/20230714091748.89681-4-andriy.shevchenko@linux.intel.com Signed-off-by: Mark Brown <broonie@kernel.org>
2023-07-14spi: Kill spi_add_device_locked()Andy Shevchenko
Now, spi_add_device_locked() has just a line on top of __spi_add_device(). Besides that, it has a single caller. So, just kill it and embed its parts into the caller. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Link: https://lore.kernel.org/r/20230714091748.89681-3-andriy.shevchenko@linux.intel.com Signed-off-by: Mark Brown <broonie@kernel.org>
2023-07-14spi: Remove code duplication in spi_add_device*()Andy Shevchenko
The commit 0c79378c0199 ("spi: add ancillary device support") added a dozen of duplicating lines of code. We may move them to the __spi_add_device(). Note, that the code may be called under the mutex. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: Sebastian Reichel <sebastian.reichel@collabora.com> Link: https://lore.kernel.org/r/20230714091748.89681-2-andriy.shevchenko@linux.intel.com Signed-off-by: Mark Brown <broonie@kernel.org>
2023-07-12spi: spi-cadence: Delete unmatched commentsYangtao Li
The function no longer returns a value, synchronize the comments. Signed-off-by: Yangtao Li <frank.li@vivo.com> Link: https://lore.kernel.org/r/20230712064832.67091-1-frank.li@vivo.com Signed-off-by: Mark Brown <broonie@kernel.org>
2023-07-12spi: Header and core clean up and refactoringMark Brown
Merge series from Andy Shevchenko <andriy.shevchenko@linux.intel.com>: Various cleanups and refactorings of the SPI header and core parts united in a single series. It also touches drivers under SPI subsystem folder on the pure renaming purposes of some constants. No functional change intended.
2023-07-12Allwinner R329/D1/R528/T113s Dual/Quad SPI modesMark Brown
Merge series from Maksim Kiselev <bigunclemax@gmail.com>: This series extends the previous https://lore.kernel.org/all/20230510081121.3463710-1-bigunclemax@gmail.com And adds support for Dual and Quad SPI modes for the listed SoCs. Both modes have been tested on the T113s and should work on other Allwinner's SoCs that have a similar SPI conttoller. It may also work for previous SoCs that support Dual/Quad modes. One of them are H6 and H616.
2023-07-12spi: amlogic-spifc-a1: fixes and improvements forMark Brown
Merge series from Martin Kurbanov <mmkurbanov@sberdevices.ru>: This series adds support for max_speed_hz and implement adjust_op_size() callback.
2023-07-11spi: Fix spelling typos and acronyms capitalizationAndy Shevchenko
Fix - spelling typos - capitalization of acronyms in the comments. While at it, fix the multi-line comment style. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Link: https://lore.kernel.org/r/20230710154932.68377-16-andriy.shevchenko@linux.intel.com Signed-off-by: Mark Brown <broonie@kernel.org>
2023-07-11spi: Convert to SPI_CONTROLLER_HALF_DUPLEXAndy Shevchenko
Convert the users under SPI subsystem to SPI_CONTROLLER_HALF_DUPLEX. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Link: https://lore.kernel.org/r/20230710154932.68377-15-andriy.shevchenko@linux.intel.com Signed-off-by: Mark Brown <broonie@kernel.org>
2023-07-11spi: Rename SPI_MASTER_GPIO_SS to SPI_CONTROLLER_GPIO_SSAndy Shevchenko
Rename SPI_MASTER_GPIO_SS to SPI_CONTROLLER_GPIO_SS and convert the users to SPI_CONTROLLER_GPIO_SS to follow the new naming shema. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Link: https://lore.kernel.org/r/20230710154932.68377-14-andriy.shevchenko@linux.intel.com Reviewed-by: Serge Semin <fancer.lancer@gmail.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2023-07-11spi: Get rid of old SPI_MASTER_MUST_TX & SPI_MASTER_MUST_RXAndy Shevchenko
Convert the users from SPI_MASTER_MUST_TX and/or SPI_MASTER_MUST_RX to SPI_CONTROLLER_MUST_TX and/or SPI_CONTROLLER_MUST_RX respectively and kill the not used anymore definitions. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Link: https://lore.kernel.org/r/20230710154932.68377-13-andriy.shevchenko@linux.intel.com Signed-off-by: Mark Brown <broonie@kernel.org>
2023-07-11spi: Get rid of old SPI_MASTER_NO_TX & SPI_MASTER_NO_RXAndy Shevchenko
Convert the users from SPI_MASTER_NO_TX and/or SPI_MASTER_NO_RX to SPI_CONTROLLER_NO_TX and/or SPI_CONTROLLER_NO_RX respectively and kill the not used anymore definitions. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Link: https://lore.kernel.org/r/20230710154932.68377-12-andriy.shevchenko@linux.intel.com Signed-off-by: Mark Brown <broonie@kernel.org>
2023-07-10spi: Sort headers alphabeticallyAndy Shevchenko
Sorting headers alphabetically helps locating duplicates, and make it easier to figure out where to insert new headers. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Link: https://lore.kernel.org/r/20230710154932.68377-8-andriy.shevchenko@linux.intel.com Signed-off-by: Mark Brown <broonie@kernel.org>
2023-07-10spi: Use sysfs_emit() to instead of s*printf()Andy Shevchenko
Follow the advice of the Documentation/filesystems/sysfs.rst and show() should only use sysfs_emit() or sysfs_emit_at() when formatting the value to be returned to user space. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Link: https://lore.kernel.org/r/20230710154932.68377-7-andriy.shevchenko@linux.intel.com Signed-off-by: Mark Brown <broonie@kernel.org>
2023-07-10spi: Replace if-else-if by bitops and multiplicationsAndy Shevchenko
Instead of if-else-if, simply call roundup_pow_of_two(BITS_PER_BYTES()). Note, there is no division assumed as compiler may optimize it away. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Link: https://lore.kernel.org/r/20230710154932.68377-4-andriy.shevchenko@linux.intel.com Signed-off-by: Mark Brown <broonie@kernel.org>
2023-07-10spi: Drop duplicate IDR allocation code in spi_register_controller()Andy Shevchenko
Refactor spi_register_controller() to drop duplicate IDR allocation. Instead of if-else-if branching use two sequential if:s, which allows to re-use the logic of IDR allocation in all cases. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Link: https://lore.kernel.org/r/20230710154932.68377-3-andriy.shevchenko@linux.intel.com Signed-off-by: Mark Brown <broonie@kernel.org>
2023-07-10spi: Remove unneeded OF node NULL checksAndy Shevchenko
In the couple of places the NULL check of OF node is implied by the call that takes it as a parameter. Drop the respective duplicate checks. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Link: https://lore.kernel.org/r/20230710154932.68377-2-andriy.shevchenko@linux.intel.com Signed-off-by: Mark Brown <broonie@kernel.org>
2023-07-09dt-bindings: spi: Convert Tegra114 SPI to json-schemaThierry Reding
Convert the Tegra114 SPI controller device tree bindings from plain text to json-schema format. Signed-off-by: Thierry Reding <treding@nvidia.com> Reviewed-by: Rob Herring <robh@kernel.org> Link: https://lore.kernel.org/r/20230705152603.2514235-3-thierry.reding@gmail.com Signed-off-by: Mark Brown <broonie@kernel.org>
2023-07-09dt-bindings: spi: tegra-sflash: Convert to json-schemaThierry Reding
Convert the Tegra SFLASH controller bindings from the free-form text format to json-schema. Signed-off-by: Thierry Reding <treding@nvidia.com> Reviewed-by: Rob Herring <robh@kernel.org> Link: https://lore.kernel.org/r/20230705152603.2514235-2-thierry.reding@gmail.com Signed-off-by: Mark Brown <broonie@kernel.org>
2023-07-09dt-bindings: spi: tegra-slink: Convert to json-schemaThierry Reding
Convert the Tegra SLINK bindings from the free-form text format to json-schema. Signed-off-by: Thierry Reding <treding@nvidia.com> Reviewed-by: Rob Herring <robh@kernel.org> Link: https://lore.kernel.org/r/20230705152603.2514235-1-thierry.reding@gmail.com Signed-off-by: Mark Brown <broonie@kernel.org>
2023-07-09spi: s3c64xx: Use devm_platform_get_and_ioremap_resource()Yangtao Li
Convert platform_get_resource(), devm_ioremap_resource() to a single call to devm_platform_get_and_ioremap_resource(), as this is exactly what this function does. Signed-off-by: Yangtao Li <frank.li@vivo.com> Link: https://lore.kernel.org/r/20230706032727.9180-7-frank.li@vivo.com Signed-off-by: Mark Brown <broonie@kernel.org>
2023-07-09spi: tegra20-slink: Use devm_platform_get_and_ioremap_resource()Yangtao Li
Convert platform_get_resource(), devm_ioremap_resource() to a single call to devm_platform_get_and_ioremap_resource(), as this is exactly what this function does. Signed-off-by: Yangtao Li <frank.li@vivo.com> Acked-by: Thierry Reding <treding@nvidia.com> Link: https://lore.kernel.org/r/20230706032727.9180-6-frank.li@vivo.com Signed-off-by: Mark Brown <broonie@kernel.org>
2023-07-09spi: rspi: Use devm_platform_get_and_ioremap_resource()Yangtao Li
Convert platform_get_resource(), devm_ioremap_resource() to a single call to devm_platform_get_and_ioremap_resource(), as this is exactly what this function does. Signed-off-by: Yangtao Li <frank.li@vivo.com> Link: https://lore.kernel.org/r/20230706032727.9180-5-frank.li@vivo.com Signed-off-by: Mark Brown <broonie@kernel.org>
2023-07-09spi: spi-nxp-fspi: Convert to devm_platform_ioremap_resource() and ↵Yangtao Li
devm_platform_ioremap_resource_byname() Use devm_platform_ioremap_resource() and devm_platform_ioremap_resource_byname() to simplify code. Signed-off-by: Yangtao Li <frank.li@vivo.com> Reviewed-by: Haibo Chen <haibo.chen@nxp.com> Link: https://lore.kernel.org/r/20230706032727.9180-4-frank.li@vivo.com Signed-off-by: Mark Brown <broonie@kernel.org>
2023-07-09spi: ep93xx: Use devm_platform_get_and_ioremap_resource()Yangtao Li
Convert platform_get_resource(), devm_ioremap_resource() to a single call to devm_platform_get_and_ioremap_resource(), as this is exactly what this function does. Signed-off-by: Yangtao Li <frank.li@vivo.com> Link: https://lore.kernel.org/r/20230706032727.9180-3-frank.li@vivo.com Signed-off-by: Mark Brown <broonie@kernel.org>
2023-07-09spi: davinci: Use devm_platform_get_and_ioremap_resource()Yangtao Li
Convert platform_get_resource(), devm_ioremap_resource() to a single call to devm_platform_get_and_ioremap_resource(), as this is exactly what this function does. Signed-off-by: Yangtao Li <frank.li@vivo.com> Link: https://lore.kernel.org/r/20230706032727.9180-2-frank.li@vivo.com Signed-off-by: Mark Brown <broonie@kernel.org>
2023-07-09spi: atmel: Use devm_platform_get_and_ioremap_resource()Yangtao Li
Convert platform_get_resource(), devm_ioremap_resource() to a single call to devm_platform_get_and_ioremap_resource(), as this is exactly what this function does. Signed-off-by: Yangtao Li <frank.li@vivo.com> Link: https://lore.kernel.org/r/20230706032727.9180-1-frank.li@vivo.com Signed-off-by: Mark Brown <broonie@kernel.org>
2023-07-09spi: rzv2m-csi: Convert to platform remove callback returning voidUwe Kleine-König
The .remove() callback for a platform driver returns an int which makes many driver authors wrongly assume it's possible to do error handling by returning an error code. However the value returned is ignored (apart from emitting a warning) and this typically results in resource leaks. To improve here there is a quest to make the remove callback return void. In the first step of this quest all drivers are converted to .remove_new() which already returns void. Eventually after all drivers are converted, .remove_new() is renamed to .remove(). Trivially convert this driver from always returning zero in the remove callback to the void returning variant. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Link: https://lore.kernel.org/r/20230707071119.3394198-1-u.kleine-koenig@pengutronix.de Signed-off-by: Mark Brown <broonie@kernel.org>
2023-07-09spi: Increase imx51 ecspi burst length based on transfer lengthStefan Moring
IMX51 supports 4096 bit burst lengths. Using the spi transfer length instead of bits_per_word increases performance significantly. Signed-off-by: Stefan Moring <stefan.moring@technolution.nl> Link: https://lore.kernel.org/r/20230628125406.237949-1-stefan.moring@technolution.nl Signed-off-by: Mark Brown <broonie@kernel.org>
2023-07-09spi: stm32: disable device mode with st,stm32f4-spi compatibleValentin Caron
STM32 SPI driver is not capable to handle device mode with stm32f4 soc. Stop probing if this case happens. Signed-off-by: Valentin Caron <valentin.caron@foss.st.com> Link: https://lore.kernel.org/r/20230706081342.468090-1-valentin.caron@foss.st.com Signed-off-by: Mark Brown <broonie@kernel.org>
2023-07-09spi: amlogic-spifc-a1: add support for max_speed_hzMartin Kurbanov
This patch sets the clock rate (spi_transfer->max_speed_hz) from the amlogic_spifc_a1_exec_op(). Signed-off-by: Martin Kurbanov <mmkurbanov@sberdevices.ru> Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org> Link: https://lore.kernel.org/r/20230706110331.19794-3-mmkurbanov@sberdevices.ru Signed-off-by: Mark Brown <broonie@kernel.org>
2023-07-09spi: amlogic-spifc-a1: implement adjust_op_size()Martin Kurbanov
This enhancement eliminates the need for a loop in the amlogic_spifc_a1_exec_op() function and allows the SPI core to dynamically divide transactions into appropriately sized chunks. Signed-off-by: Martin Kurbanov <mmkurbanov@sberdevices.ru> Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org> Link: https://lore.kernel.org/r/20230706110331.19794-2-mmkurbanov@sberdevices.ru Signed-off-by: Mark Brown <broonie@kernel.org>
2023-07-09spi: sun6i: add dual and quad SPI modes support for R329/D1/R528/T113sMaksim Kiselev
Listed SoCs have SPI controllers that can operate in dual or quad modes. This patch adds dual/quad mode bits for spi_master on these SoCS. Signed-off-by: Maksim Kiselev <bigunclemax@gmail.com> Link: https://lore.kernel.org/r/20230624131632.2972546-3-bigunclemax@gmail.com Signed-off-by: Mark Brown <broonie@kernel.org>
2023-07-09spi: sun6i: add quirk for dual and quad SPI modes supportMaksim Kiselev
New Allwinner's SPI controllers can support dual and quad SPI modes. To enable one of these modes, we should set the corresponding bit in the SUN6I_BURST_CTL_CNT_REG register. DRM (28 bits) for dual mode and Quad_EN (29 bits) for quad transmission. Signed-off-by: Maksim Kiselev <bigunclemax@gmail.com> Link: https://lore.kernel.org/r/20230624131632.2972546-2-bigunclemax@gmail.com Signed-off-by: Mark Brown <broonie@kernel.org>
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