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path: root/drivers/spi/spi-nxp-fspi.c
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* spi: spi-nxp-fspi: fix fspi panic by unexpected interruptsRan Wang2020-11-231-0/+7
| | | | | | | | | | | | | | | | | | Given the case that bootloader(such as UEFI)'s FSPI driver might not handle all interrupts before loading kernel, those legacy interrupts would assert immidiately once kernel's FSPI driver enable them. Further, if it was FSPI_INTR_IPCMDDONE, the irq handler nxp_fspi_irq_handler() would call complete(&f->c) to notify others. However, f->c might not be initialized yet at that time, then cause kernel panic. Of cause, we should fix this issue within bootloader. But it would be better to have this pacth to make dirver more robust (by clearing all interrupt status bits before enabling interrupts). Suggested-by: Han Xu <han.xu@nxp.com> Signed-off-by: Ran Wang <ran.wang_1@nxp.com> Link: https://lore.kernel.org/r/20201123025715.14635-1-ran.wang_1@nxp.com Signed-off-by: Mark Brown <broonie@kernel.org>
* spi: spi-nxp-fspi: Add ACPI supportkuldip dwivedi2020-09-171-19/+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>
* spi: spi-nxp-fspi: Fix a NULL vs IS_ERR() check in probeDan Carpenter2020-03-121-2/+2
| | | | | | | | | | The platform_get_resource_byname() function returns NULL on error, it doesn't return error pointers. Fixes: d166a73503ef ("spi: fspi: dynamically alloc AHB memory") Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Link: https://lore.kernel.org/r/20200312113154.GC20562@mwanda Signed-off-by: Mark Brown <broonie@kernel.org>
* spi: spi-nxp-fspi: Enable the Octal Mode in MCR0Han Xu2020-03-051-2/+3
| | | | | | | | | | | Apply patch from NXP upstream repo to Enable the octal combination mode in MCR0 Signed-off-by: Adam Ford <aford173@gmail.com> Signed-off-by: Han Xu <han.xu@nxp.com> Link: https://lore.kernel.org/r/20200126140913.2139260-3-aford173@gmail.com Signed-off-by: Mark Brown <broonie@kernel.org>
* spi: fspi: dynamically alloc AHB memoryHan Xu2020-03-051-6/+34
| | | | | | | | | | | Apply patch from NXP upstream repo to dynamically allocate AHB memory as needed. Signed-off-by: Adam Ford <aford173@gmail.com> Signed-off-by: Han Xu <han.xu@nxp.com> Link: https://lore.kernel.org/r/20200126140913.2139260-2-aford173@gmail.com Signed-off-by: Mark Brown <broonie@kernel.org>
* spi: fspi: enable fspi on imx8qxp and imx8mmHan Xu2020-03-051-0/+18
| | | | | | | | | | | Pull in this patch from NXP's upstream repo to enable fspi on imx8qxp and imx8mm Signed-off-by: Adam Ford <aford173@gmail.com> Signed-off-by: Han Xu <han.xu@nxp.com> Link: https://lore.kernel.org/r/20200126140913.2139260-1-aford173@gmail.com Signed-off-by: Mark Brown <broonie@kernel.org>
* spi: nxp-fspi: Ensure width is respected in spi-mem operationsMichael Walle2019-12-161-1/+1
| | | | | | | | | | | | | | Make use of a core helper to ensure the desired width is respected when calling spi-mem operators. Otherwise only the SPI controller will be matched with the flash chip, which might lead to wrong widths. Also consider the width specified by the user in the device tree. Fixes: a5356aef6a90 ("spi: spi-mem: Add driver for NXP FlexSPI controller") Signed-off-by: Michael Walle <michael@walle.cc> Link: https://lore.kernel.org/r/20191211195730.26794-1-michael@walle.cc Signed-off-by: Mark Brown <broonie@kernel.org>
* spi: nxp-fspi: Use devm API to fix missed unregistration of controllerChuhong Yuan2019-11-111-1/+1
| | | | | | | | | This driver forgets to unregister controller when remove. Use devm API to unregister it automatically to fix it. Signed-off-by: Chuhong Yuan <hslester96@gmail.com> Link: https://lore.kernel.org/r/20191109075517.29988-1-hslester96@gmail.com Signed-off-by: Mark Brown <broonie@kernel.org>
* spi: Remove dev_err() usage after platform_get_irq()Stephen Boyd2019-08-021-3/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We don't need dev_err() messages when platform_get_irq() fails now that platform_get_irq() prints an error message itself when something goes wrong. Let's remove these prints with a simple semantic patch. // <smpl> @@ expression ret; struct platform_device *E; @@ ret = ( platform_get_irq(E, ...) | platform_get_irq_byname(E, ...) ); if ( \( ret < 0 \| ret <= 0 \) ) { ( -if (ret != -EPROBE_DEFER) -{ ... -dev_err(...); -... } | ... -dev_err(...); ) ... } // </smpl> While we're here, remove braces on if statements that only have one statement (manually). Cc: Mark Brown <broonie@kernel.org> Cc: linux-spi@vger.kernel.org Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Stephen Boyd <swboyd@chromium.org> Link: https://lore.kernel.org/r/20190730181557.90391-42-swboyd@chromium.org Signed-off-by: Mark Brown <broonie@kernel.org>
* spi: spi-mem: spi-nxp-fspi: add module license infoYogesh Narayan Gaur2019-01-291-2/+3
| | | | | | | | | | | | Add MODULE_LICENSE info to fix below warning: WARNING: modpost: missing MODULE_LICENSE() in drivers/spi/spi-nxp-fspi.o Typo fix in Boris Brezillon last name. Fixes: a5356aef6a90 ("spi: spi-mem: Add driver for NXP FlexSPI controller") Reported-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Yogesh Narayan Gaur <yogeshnarayan.gaur@nxp.com> Signed-off-by: Mark Brown <broonie@kernel.org>
* spi: nxp-fspi: add octal mode flag bit for octal supportYogesh Narayan Gaur2019-01-281-2/+2
| | | | | | | | Add octal mode flags for octal I/O data transfer support. NXP FlexSPI controller supports 8 lines Rx/Tx data transfer. Signed-off-by: Yogesh Narayan Gaur <yogeshnarayan.gaur@nxp.com> Signed-off-by: Mark Brown <broonie@kernel.org>
* spi: spi-mem: Add driver for NXP FlexSPI controllerYogesh Narayan Gaur2019-01-281-0/+1105
- Add driver for NXP FlexSPI host controller (0) What is the FlexSPI controller? FlexSPI is a flexsible SPI host controller which supports two SPI channels and up to 4 external devices. Each channel supports Single/Dual/Quad/Octal mode data transfer (1/2/4/8 bidirectional data lines) i.e. FlexSPI acts as an interface to external devices, maximum 4, each with up to 8 bidirectional data lines. It uses new SPI memory interface of the SPI framework to issue flash memory operations to up to four connected flash devices (2 buses with 2 CS each). (1) Tested this driver with the mtd_debug and JFFS2 filesystem utility on NXP LX2160ARDB and LX2160AQDS targets. LX2160ARDB is having two NOR slave device connected on single bus A i.e. A0 and A1 (CS0 and CS1). LX2160AQDS is having two NOR slave device connected on separate buses one flash on A0 and second on B1 i.e. (CS0 and CS3). Verified this driver on following SPI NOR flashes: Micron, mt35xu512ab, [Read - 1 bit mode] Cypress, s25fl512s, [Read - 1/2/4 bit mode] Signed-off-by: Yogesh Narayan Gaur <yogeshnarayan.gaur@nxp.com> Reviewed-by: Frieder Schrempf <frieder.schrempf@kontron.de> Reviewed-by: Boris Brezillon <bbrezillon@kernel.org> Tested-by: Ashish Kumar <Ashish.Kumar@nxp.com> Signed-off-by: Mark Brown <broonie@kernel.org>
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