summaryrefslogtreecommitdiff
path: root/drivers/spi
AgeCommit message (Collapse)Author
2022-05-11spi: stm32-qspi: Fix wait_cmd timeout in APM modePatrice Chotard
In APM mode, TCF and TEF flags are not set. To avoid timeout in stm32_qspi_wait_cmd(), don't check if TCF/TEF are set. Signed-off-by: Patrice Chotard <patrice.chotard@foss.st.com> Reported-by: eberhard.stoll@kontron.de Link: https://lore.kernel.org/r/20220511074644.558874-2-patrice.chotard@foss.st.com Signed-off-by: Mark Brown <broonie@kernel.org>
2022-05-10spi: cadence-quadspi: remove unnecessary (void *) castsIan Abbott
Remove a couple of unnecessary casts to `(void *)` when initializing the `.data` members in the device ID table. Signed-off-by: Ian Abbott <abbotti@mev.co.uk> Link: https://lore.kernel.org/r/20220510115141.212779-3-abbotti@mev.co.uk Signed-off-by: Mark Brown <broonie@kernel.org>
2022-05-10spi: cadence-quadspi: Add missing blank line in cqspi_request_mmap_dma()Ian Abbott
Fix "WARNING: Missing a blank line after declarations" reported by checkpatch.pl. Signed-off-by: Ian Abbott <abbotti@mev.co.uk> Link: https://lore.kernel.org/r/20220510115141.212779-2-abbotti@mev.co.uk Signed-off-by: Mark Brown <broonie@kernel.org>
2022-05-09spi: spi-imx: mx51_ecspi_prepare_message(): skip writing MX51_ECSPI_CONFIG ↵Marc Kleine-Budde
register if unchanged In mx51_ecspi_prepare_message() the MX51_ECSPI_CONFIG register is setup for the current spi_message. After writing the register, there is a delay to ensure that the changes hit the hardware. This patch checks if the register MX51_ECSPI_CONFIG actually needs to be changed. If the register content is unchanged the function is left early, skipping the write to the hardware and the delay. This leads to a small, but measurable performance increase. For a given workload with small transfers on an imx6 single core the CPU load decreases from 30% to ~27%. Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de> Link: https://lore.kernel.org/r/20220502175457.1977983-10-mkl@pengutronix.de Signed-off-by: Mark Brown <broonie@kernel.org>
2022-05-09spi: spi-imx: add PIO polling supportMarc Kleine-Budde
The driver supports several modes, one of them is PIO/IRQ "spi_imx_pio_transfer()". The data is exchanged with the IP core using PIO, an IRQ is setup to signal empty/full FIFOs and the end of the transfer. The IRQ and scheduling overhead for short transfers is significant. Using polling instead of IRQs can be beneficial to reduce the overall CPU load, especially on small transfer workloads. On an imx6 single core, a given RX workload of the mcp251xfd driver results in 40% CPU load. Using polling mode reduces the CPU load to 30%. This patch adds PIO polling support to the driver. For transfers with a duration of less than 30 µs the polling mode instead of IRQ based PIO mode is used. 30 µs seems to be a good compromise, which is used the by the SPI drivers for the raspberry Pi (spi-bcm2835, spi-bcm2835), too. Co-developed-by: David Jander <david@protonic.nl> Signed-off-by: David Jander <david@protonic.nl> Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de> Link: https://lore.kernel.org/r/20220502175457.1977983-9-mkl@pengutronix.de Signed-off-by: Mark Brown <broonie@kernel.org>
2022-05-09spi: spi-imx: replace struct spi_imx_data::bitbang by pointer to struct ↵Marc Kleine-Budde
spi_controller There's no need to embed the struct spi_bitbang into our private data (struct spi_imx_data), the spi core is flexible enough, so that we only need a pointer to the allocated struct spi_controller. This is also a preparation patch to add PIO based polling support to the driver. Co-developed-by: David Jander <david@protonic.nl> Signed-off-by: David Jander <david@protonic.nl> Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de> Link: https://lore.kernel.org/r/20220502175457.1977983-8-mkl@pengutronix.de Signed-off-by: Mark Brown <broonie@kernel.org>
2022-05-09spi: spi-imx: complete conversion from master -> controllerMarc Kleine-Budde
With patch: | 8caab75fd2c2 ("spi: Generalize SPI "master" to "controller"") the SPI "master" was generalized to "controller". This patch completed the conversion of the spi-imx driver by replacing the remaining occurrences of master to controller. Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de> Link: https://lore.kernel.org/r/20220502175457.1977983-7-mkl@pengutronix.de Signed-off-by: Mark Brown <broonie@kernel.org>
2022-05-09spi: spi-imx: spi_imx_buf_rx_swap_u32(): replace open coded swahw32s()Marc Kleine-Budde
This patch replaces an open coded swahw32s(). Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de> Link: https://lore.kernel.org/r/20220502175457.1977983-6-mkl@pengutronix.de Signed-off-by: Mark Brown <broonie@kernel.org>
2022-05-09spi: spi-imx: spi_imx_buf_rx_swap_u32(): fix sparse warning: use swab32s() ↵Marc Kleine-Budde
instead of cpu_to_be32() This patch fixes the following sparse warning by using a swab32s() instead of a cpu_to_be32(). The driver is used on little endian systems only and we really want to swap the bytes. | drivers/spi/spi-imx.c:305:29: warning: incorrect type in assignment (different base types) | drivers/spi/spi-imx.c:305:29: expected unsigned int val | drivers/spi/spi-imx.c:305:29: got restricted __be32 [usertype] | drivers/spi/spi-imx.c:361:21: warning: incorrect type in assignment (different base types) | drivers/spi/spi-imx.c:361:21: expected unsigned int [assigned] [usertype] val | drivers/spi/spi-imx.c:361:21: got restricted __be32 [usertype] Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de> Link: https://lore.kernel.org/r/20220502175457.1977983-5-mkl@pengutronix.de Signed-off-by: Mark Brown <broonie@kernel.org>
2022-05-09spi: spi-imx: mx51_ecspi_intctrl(): prefer 'unsigned int' to bare use of ↵Marc Kleine-Budde
'unsigned' This patch fixes the following checkpatch warning, by making val an "unsigned int". | WARNING: Prefer 'unsigned int' to bare use of 'unsigned' | + unsigned val = 0; Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de> Link: https://lore.kernel.org/r/20220502175457.1977983-4-mkl@pengutronix.de Signed-off-by: Mark Brown <broonie@kernel.org>
2022-05-09spi: spi-imx: avoid unnecessary line continuationsMarc Kleine-Budde
This patch fixes the following checkpatch warning by removing the trailing backslash: | WARNING: Avoid unnecessary line continuations | + spi_imx->bitbang.master->mode_bits = SPI_CPOL | SPI_CPHA | SPI_CS_HIGH \ Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de> Link: https://lore.kernel.org/r/20220502175457.1977983-3-mkl@pengutronix.de Signed-off-by: Mark Brown <broonie@kernel.org>
2022-05-09spi: spi-imx: fix sparse warning: add identifier name to function definitionMarc Kleine-Budde
This patch fixes the following and similar sparse warnings by adding the missing identifier names to the function definitions: | WARNING: function definition argument 'struct spi_imx_data *' should also have an identifier name | #68: FILE: drivers/spi/spi-imx.c:68: | + int (*prepare_message)(struct spi_imx_data *, struct spi_message *); Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de> Link: https://lore.kernel.org/r/20220502175457.1977983-2-mkl@pengutronix.de Signed-off-by: Mark Brown <broonie@kernel.org>
2022-05-09spi: spi-fsl-qspi: check return value after calling ↵Yang Yingliang
platform_get_resource_byname() It will cause null-ptr-deref if platform_get_resource_byname() returns NULL, we need check the return value. Fixes: 858e26a515c2 ("spi: spi-fsl-qspi: Reduce devm_ioremap size to 4 times AHB buffer size") Signed-off-by: Yang Yingliang <yangyingliang@huawei.com> Link: https://lore.kernel.org/r/20220505093954.1285615-1-yangyingliang@huawei.com Signed-off-by: Mark Brown <broonie@kernel.org>
2022-05-04spi: omap2-mcspi: add support for interword delayAndrea Zanotti
The module omap2-mcspi does not support the interword delay parameter present in the spi transfer. On one side, if the module is instructed to use the dma, this parameter is correctly ignored. However, without the usage of the dma, that parameter should be used. The patch introduce the handling of such delay in the omap2-mcspi module, using standard spi_delay struct. The patch has been tested using as benchmark a DM3730. The delay function used (spi_delay_exec) is already present in the kernel and it checks on its own the validity of the input, as such, no additional checks are present. The range of usage of the udelay function is incremented to 200 us, as the change from udelay to usleep_range introduces not neglectible delays. Signed-off-by: Andrea Zanotti <andreazanottifo@gmail.com> Link: https://lore.kernel.org/r/20220502111300.24754-1-andreazanottifo@gmail.com Signed-off-by: Mark Brown <broonie@kernel.org>
2022-05-03spi: mtk-snfi: preserve dma_mapping_error() error codesDan Carpenter
Return -ENOMEM of there is a dma mapping error. Do not return success. Fixes: 764f1b748164 ("spi: add driver for MTK SPI NAND Flash Interface") Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Reviewed-by: Chuanhong Guo <gch981213@gmail.com> Link: https://lore.kernel.org/r/YmwjUcTKyQNrrn2g@kili Signed-off-by: Mark Brown <broonie@kernel.org>
2022-05-03spi: cadence-quadspi: fix Direct Access Mode disable for SoCFPGAIan Abbott
The Cadence QSPI compatible string required for the SoCFPGA platform changed from the default "cdns,qspi-nor" to "intel,socfpga-qspi" with the introduction of an additional quirk in commit 98d948eb8331 ("spi: cadence-quadspi: fix write completion support"). However, that change did not preserve the previously used quirk for this platform. Reinstate the `CQSPI_DISABLE_DAC_MODE` quirk for the SoCFPGA platform. Fixes: 98d948eb8331 ("spi: cadence-quadspi: fix write completion support") Cc: Dinh Nguyen <dinguyen@kernel.org> Signed-off-by: Ian Abbott <abbotti@mev.co.uk> Link: https://lore.kernel.org/r/20220427153446.10113-1-abbotti@mev.co.uk Signed-off-by: Mark Brown <broonie@kernel.org>
2022-05-02Merge 5.18-rc5 into driver-core-nextGreg Kroah-Hartman
We need the kernfs/driver core fixes in here as well. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-04-27spi: add driver for MTK SPI NAND Flash InterfaceChuanhong Guo
This driver implements support for the SPI-NAND mode of MTK NAND Flash Interface as a SPI-MEM controller with pipelined ECC capability. Signed-off-by: Chuanhong Guo <gch981213@gmail.com> Tested-by: Daniel Golle <daniel@makrotopia.org> Link: https://lore.kernel.org/r/20220424032527.673605-3-gch981213@gmail.com Signed-off-by: Mark Brown <broonie@kernel.org>
2022-04-25Improve SPI support for Ingenic SoCs.Mark Brown
Merge series from 周琰杰 (Zhou Yanjie) <zhouyanjie@wanyeetech.com>: 1.Add support for using GPIOs as chip select lines on Ingenic SoCs. 2.Add support for probing the spi-ingenic driver on the JZ4775 SoC, the X1000 SoC, and the X2000 SoC. 3.Modify annotation texts to be more in line with the current state.
2022-04-25spi: clps711x: Use syscon_regmap_lookup_by_phandleAlexander Shiyan
Since version 5.13, the standard syscon bindings have been added to all clps711x DT nodes, so we can now use the more general syscon_regmap_lookup_by_phandle function to get the syscon pointer. Signed-off-by: Alexander Shiyan <eagle.alexander923@gmail.com> Link: https://lore.kernel.org/r/20220420061038.22570-1-eagle.alexander923@gmail.com Signed-off-by: Mark Brown <broonie@kernel.org>
2022-04-25spi: stm32: using pm_runtime_resume_and_get instead of pm_runtime_get_syncMinghao Chi
Using pm_runtime_resume_and_get() to replace pm_runtime_get_sync and pm_runtime_put_noidle. This change is just to simplify the code, no actual functional changes. Reported-by: Zeal Robot <zealci@zte.com.cn> Signed-off-by: Minghao Chi <chi.minghao@zte.com.cn> Link: https://lore.kernel.org/r/20220420090452.2588930-1-chi.minghao@zte.com.cn Signed-off-by: Mark Brown <broonie@kernel.org>
2022-04-25spi: spi-cadence-quadspi: using pm_runtime_resume_and_get instead of ↵Minghao Chi
pm_runtime_get_sync Using pm_runtime_resume_and_get() to replace pm_runtime_get_sync and pm_runtime_put_noidle. This change is just to simplify the code, no actual functional changes. Reported-by: Zeal Robot <zealci@zte.com.cn> Signed-off-by: Minghao Chi <chi.minghao@zte.com.cn> Link: https://lore.kernel.org/r/20220414085637.2541805-1-chi.minghao@zte.com.cn Signed-off-by: Mark Brown <broonie@kernel.org>
2022-04-25spi: spi-tegra20-slink: using pm_runtime_resume_and_get instead of ↵Minghao Chi
pm_runtime_get_sync Using pm_runtime_resume_and_get is more appropriate for simplifing code Reported-by: Zeal Robot <zealci@zte.com.cn> Signed-off-by: Minghao Chi <chi.minghao@zte.com.cn> Link: https://lore.kernel.org/r/20220418110141.2559019-1-chi.minghao@zte.com.cn Signed-off-by: Mark Brown <broonie@kernel.org>
2022-04-25spi: cadence-quadspi: allow operations with cmd/addr buswidth >1Matthias Schiffer
With the removal of the incorrect logic of cqspi_set_protocol(), ops with cmd/addr buswidth >1 are now working correctly. Tested on a TI AM64x with a Macronix MX25U51245G QSPI flash using 1-4-4 operations. DTR operations are currently untested, so we leave them disabled for now (except for the previously allowed 8-8-8 ops). Signed-off-by: Matthias Schiffer <matthias.schiffer@ew.tq-group.com> Link: https://lore.kernel.org/r/20220420155616.281730-2-matthias.schiffer@ew.tq-group.com Signed-off-by: Mark Brown <broonie@kernel.org>
2022-04-25spi: cadence-quadspi: drop cqspi_set_protocol()Matthias Schiffer
As suggested, this removes the whole cqspi_set_protocol() function, as it is not actually needed: - Checks for unsupported operations are already handled by supports_op(), removing the need to distinguish DTR and non-DTR modes in the buswidth setup - supports_op() ensures that the DTR flags match for all relevant parts of an operation, so op->cmd.dtr can be used instead of copying the flag to the cqspi_flash_pdata - The logic in cqspi_set_protocol() is moved to cqspi_calc_rdreg() and cqspi_write_setup() (with a helper macro CQSPI_OP_WIDTH()) The helper macro checks nbytes instead of buswidth for 0, for consistency with supports_op() etc. Suggested-by: Pratyush Yadav <p.yadav@ti.com> Signed-off-by: Matthias Schiffer <matthias.schiffer@ew.tq-group.com> Link: https://lore.kernel.org/r/20220420155616.281730-1-matthias.schiffer@ew.tq-group.com Signed-off-by: Mark Brown <broonie@kernel.org>
2022-04-25spi: spi-tegra20-sflash: using pm_runtime_resume_and_get instead of ↵Minghao Chi
pm_runtime_get_sync Using pm_runtime_resume_and_get is more appropriate for simplifing code Reported-by: Zeal Robot <zealci@zte.com.cn> Signed-off-by: Minghao Chi <chi.minghao@zte.com.cn> Link: https://lore.kernel.org/r/20220418110103.2558955-1-chi.minghao@zte.com.cn Signed-off-by: Mark Brown <broonie@kernel.org>
2022-04-25spi: rockchip: fix missing error on unsupported SPI_CS_HIGHLuca Ceresoli
The hardware (except for the ROCKCHIP_SPI_VER2_TYPE2 version) does not support active-high native chip selects. However if such a CS is configured the core does not error as it normally should, because the 'ctlr->use_gpio_descriptors = true' line in rockchip_spi_probe() makes the core set SPI_CS_HIGH in ctlr->mode_bits. In such a case the spi-rockchip driver operates normally but produces an active-low chip select signal without notice. There is no provision in the current core code to handle this situation. Fix by adding a check in the ctlr->setup function (similarly to what spi-atmel.c does). This cannot be done reading the SPI_CS_HIGH but in ctlr->mode_bits because that bit gets always set by the core for master mode (see above). Fixes: eb1262e3cc8b ("spi: spi-rockchip: use num-cs property and ctlr->enable_gpiods") Signed-off-by: Luca Ceresoli <luca.ceresoli@bootlin.com> Link: https://lore.kernel.org/r/20220421213251.1077899-1-luca.ceresoli@bootlin.com Signed-off-by: Mark Brown <broonie@kernel.org>
2022-04-25spi: spi-omap2-mcspi: using pm_runtime_resume_and_get instead of ↵Minghao Chi
pm_runtime_get_sync Using pm_runtime_resume_and_get() to replace pm_runtime_get_sync and pm_runtime_put_noidle. This change is just to simplify the code, no actual functional changes. Reported-by: Zeal Robot <zealci@zte.com.cn> Signed-off-by: Minghao Chi <chi.minghao@zte.com.cn> Link: https://lore.kernel.org/r/20220414085433.2541670-1-chi.minghao@zte.com.cn Signed-off-by: Mark Brown <broonie@kernel.org>
2022-04-25spi: mxs: using pm_runtime_resume_and_get instead of pm_runtime_get_syncMinghao Chi
Using pm_runtime_resume_and_get() to replace pm_runtime_get_sync and pm_runtime_put_noidle. This change is just to simplify the code, no actual functional changes. Reported-by: Zeal Robot <zealci@zte.com.cn> Signed-off-by: Minghao Chi <chi.minghao@zte.com.cn> Link: https://lore.kernel.org/r/20220420090420.2588868-1-chi.minghao@zte.com.cn Signed-off-by: Mark Brown <broonie@kernel.org>
2022-04-25spi: spi-imx: using pm_runtime_resume_and_get instead of pm_runtime_get_syncMinghao Chi
Using pm_runtime_resume_and_get() to replace pm_runtime_get_sync and pm_runtime_put_noidle. This change is just to simplify the code, no actual functional changes. Reported-by: Zeal Robot <zealci@zte.com.cn> Signed-off-by: Minghao Chi <chi.minghao@zte.com.cn> Link: https://lore.kernel.org/r/20220414085343.2541608-1-chi.minghao@zte.com.cn Signed-off-by: Mark Brown <broonie@kernel.org>
2022-04-25spi: spi-sprd: using pm_runtime_resume_and_get instead of pm_runtime_get_syncMinghao Chi
Using pm_runtime_resume_and_get() to replace pm_runtime_get_sync and pm_runtime_put_noidle. This change is just to simplify the code, no actual functional changes. Reported-by: Zeal Robot <zealci@zte.com.cn> Signed-off-by: Minghao Chi <chi.minghao@zte.com.cn> Link: https://lore.kernel.org/r/20220414085506.2541732-1-chi.minghao@zte.com.cn Signed-off-by: Mark Brown <broonie@kernel.org>
2022-04-25spi: ingenic: Add support for new Ingenic SoCs.周琰杰 (Zhou Yanjie)
1.Since it would be dangerous to specify a newer SoC's compatible string as the fallback of an older SoC's compatible string, we add support for the "ingenic,jz4775-spi" compatible string in the driver. This will permit to support the JZ4775 by having: compatible = "ingenic,jz4775-spi"; Instead of doing: compatible = "ingenic,jz4775-spi", "ingenic,jz4780-spi"; 2.Add support for probing the spi-ingenic driver on the X1000 SoC from Ingenic. From the X1000 SoC onwards, the maximum frequency allowed by the SSI module of Ingenic SoCs has been changed from 54MHz to 50MHz. So "max_speed_hz" is introduced in "jz_soc_info" to set different maximum frequency values. 3.Add support for probing the spi-ingenic driver on the X2000 SoC from Ingenic. The X2000 SoC has only one native chip select line, so "max_native_cs" is introduced in "jz_soc_info" to set different maximum number of native chip select lines. 4.Because of the introduction of support for the X-series SoCs, the current driver is not only applicable to the JZ-series SoCs, so the description texts has been modified to avoid misunderstanding. Signed-off-by: 周琰杰 (Zhou Yanjie) <zhouyanjie@wanyeetech.com> Reviewed-by: Paul Cercueil <paul@crapouillou.net> Link: https://lore.kernel.org/r/1650724725-93758-4-git-send-email-zhouyanjie@wanyeetech.com Signed-off-by: Mark Brown <broonie@kernel.org>
2022-04-25spi: ingenic: Add support for use GPIO as chip select line.周琰杰 (Zhou Yanjie)
Add support for using GPIOs as chip select lines on Ingenic SoCs. Signed-off-by: 周琰杰 (Zhou Yanjie) <zhouyanjie@wanyeetech.com> Reviewed-by: Paul Cercueil <paul@crapouillou.net> Link: https://lore.kernel.org/r/1650724725-93758-2-git-send-email-zhouyanjie@wanyeetech.com Signed-off-by: Mark Brown <broonie@kernel.org>
2022-04-22spi: Use helper for safer setting of driver_overrideKrzysztof Kozlowski
Use a helper to set driver_override to the reduce amount of duplicated code. Reviewed-by: Mark Brown <broonie@kernel.org> Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Link: https://lore.kernel.org/r/20220419113435.246203-8-krzysztof.kozlowski@linaro.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-04-22spi: img-spfi: Fix pm_runtime_get_sync() error checkingZheng Yongjun
If the device is already in a runtime PM enabled state pm_runtime_get_sync() will return 1, so a test for negative value should be used to check for errors. Fixes: deba25800a12b ("spi: Add driver for IMG SPFI controller") Signed-off-by: Zheng Yongjun <zhengyongjun3@huawei.com> Link: https://lore.kernel.org/r/20220422062641.10486-1-zhengyongjun3@huawei.com Signed-off-by: Mark Brown <broonie@kernel.org>
2022-04-21spi: spi-mem: check if data buffers are on stackPratyush Yadav
The buffers passed in the data phase must be DMA-able. Programmers often don't realise this requirement and pass in buffers that reside on the stack. This can be hard to spot when reviewing code. Reject ops if their data buffer is on the stack to avoid this. Signed-off-by: Pratyush Yadav <p.yadav@ti.com> Link: https://lore.kernel.org/r/20220420102022.3310970-1-p.yadav@ti.com Signed-off-by: Mark Brown <broonie@kernel.org>
2022-04-21ARM: omap1: move perseus spi pinconf to board fileArnd Bergmann
The driver has always had a FIXME about this, and it seems like this trivial code move avoids a mach header inclusion, so just do it. With that out of the way, and the header file inclusions changed to global files, the driver can also be compile-tested on other platforms. Acked-by: Mark Brown <broonie@kernel.org> Acked-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2022-04-20spi: intel: Implement dirmap hooksMika Westerberg
Currently the driver goes over the supported opcodes list each time ->exec_op() is called and finds the suitable for the given operation. This consumes unnecessary amount of CPU cycles because the operation is always the same. For this reason populate dirmap hooks for the driver so that we cache the selected operation and then simply call it on each read/write. Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com> Link: https://lore.kernel.org/r/20220420104350.19510-1-mika.westerberg@linux.intel.com Signed-off-by: Mark Brown <broonie@kernel.org>
2022-04-20MediaTek SPI controller cleanups and documentationMark Brown
Merge series from AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>: This series performs some cleanups to the spi-mt65xx driver, removing all gotos, simplifying the probe function and adding kerneldoc to the driver structures.
2022-04-19Merge tag 'spi-fix-v5.18-rc3' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi Pull spi fixes from Mark Brown: "A few more fixes for SPI, plus one new PCI ID for another Intel chipset. All device specific stuff" * tag 'spi-fix-v5.18-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi: spi: atmel-quadspi: Fix the buswidth adjustment between spi-mem and controller spi: cadence-quadspi: fix incorrect supports_op() return value spi: intel: Add support for Raptor Lake-S SPI serial flash spi: spi-mtk-nor: initialize spi controller after resume
2022-04-19spi: mt65xx: Fix definitions indentationAngeloGioacchino Del Regno
Some definitions at the beginning of this file were wrongly indented: fix the indentation for all of these and, while at it, also move the MTK_SPI_IDLE and MTK_SPI_PAUSED down, as to implicitly group the hardware related definitions to the software (driver) related ones. Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com> Link: https://lore.kernel.org/r/20220407114428.167091-9-angelogioacchino.delregno@collabora.com Signed-off-by: Mark Brown <broonie@kernel.org>
2022-04-19spi: mt65xx: Add kerneldoc for driver structuresAngeloGioacchino Del Regno
One of the two structures was already partially documented, but not in kerneldoc format: enhance readability by adding the missing documentation bits and use kerneldoc. Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com> Link: https://lore.kernel.org/r/20220407114428.167091-8-angelogioacchino.delregno@collabora.com Signed-off-by: Mark Brown <broonie@kernel.org>
2022-04-19spi: mt65xx: Simplify probe function with dev_err_probe()AngeloGioacchino Del Regno
Switch to dev_err_probe() to remove all dev_err() -> return repeated patterns, simplifying and shortening the probe function. Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com> Link: https://lore.kernel.org/r/20220407114428.167091-7-angelogioacchino.delregno@collabora.com Signed-off-by: Mark Brown <broonie@kernel.org>
2022-04-19spi: mt65xx: Move pm_runtime_enable() call to remove all gotosAngeloGioacchino Del Regno
The last goto in the probe function can be removed by calling pm_runtime_enable() right before devm_spi_register_master(), as only some init checks were being performed after enabling pm. This is a cleanup and brings no functional changes. Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com> Link: https://lore.kernel.org/r/20220407114428.167091-6-angelogioacchino.delregno@collabora.com Signed-off-by: Mark Brown <broonie@kernel.org>
2022-04-19spi: mt65xx: Move clock parent setting to remove clock disable gotosAngeloGioacchino Del Regno
Reparenting sel_clk to parent_clk can be done before enabling any of spi_clk and spi_hclk. Move the call to clk_set_parent() for sel_clk earlier, and call disable_unprepare() upon spi_clk prepare_enable() failure to remove all clock disablement related gotos. This commit is in preparation of a later cleanup. Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com> Link: https://lore.kernel.org/r/20220407114428.167091-5-angelogioacchino.delregno@collabora.com Signed-off-by: Mark Brown <broonie@kernel.org>
2022-04-19spi: mt65xx: Add and use pointer to struct device in mtk_spi_probe()AngeloGioacchino Del Regno
In preparation for switching to dev_err_probe() in this function, add a pointer to struct device and replace all occurrences of '&pdev->dev' to using this 'dev' pointer. This is done for one-line fitting of the dev_err_probe() calls. Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com> Link: https://lore.kernel.org/r/20220407114428.167091-4-angelogioacchino.delregno@collabora.com Signed-off-by: Mark Brown <broonie@kernel.org>
2022-04-19spi: mt65xx: Switch to device_get_match_data()AngeloGioacchino Del Regno
Instead of performing yet another match check in the probe function, simply switch to device_get_match_data(). This is a cleanup and brings no functional change. Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com> Link: https://lore.kernel.org/r/20220407114428.167091-3-angelogioacchino.delregno@collabora.com Signed-off-by: Mark Brown <broonie@kernel.org>
2022-04-19spi: mt65xx: Simplify probe function with devm_spi_alloc_masterAngeloGioacchino Del Regno
Switch to the devm variant of spi_alloc_master() to save some gotos. This patch is a cleanup that brings no functional changes. Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com> Link: https://lore.kernel.org/r/20220407114428.167091-2-angelogioacchino.delregno@collabora.com Signed-off-by: Mark Brown <broonie@kernel.org>
2022-04-19spi: using pm_runtime_resume_and_get instead of pm_runtime_get_syncMinghao Chi
Using pm_runtime_resume_and_get is more appropriate for simplifing code Reported-by: Zeal Robot <zealci@zte.com.cn> Signed-off-by: Minghao Chi <chi.minghao@zte.com.cn> Link: https://lore.kernel.org/r/20220418110226.2559081-1-chi.minghao@zte.com.cn Signed-off-by: Mark Brown <broonie@kernel.org>
2022-04-19spi: spi-imx: add support for SPI_RX_CPHA_FLIPBaruch Siach
When SPI_RX_CPHA_FLIP is set, flip CPHA on Rx only transfers. This is useful to access devices that use inverted CPHA for MISO vs MOSI signals. Only support the mx51/mx53 variants for now. Tested on i.MX6ULL based system. Signed-off-by: Baruch Siach <baruch.siach@siklu.com> Link: https://lore.kernel.org/r/e11b4446afe9a46a282dd923d22c27d03fae15f8.1649702729.git.baruch@tkos.co.il Signed-off-by: Mark Brown <broonie@kernel.org>
generated by cgit (git 2.34.1) at 2025-09-21 04:27:21 +0000