- 30 Aug, 2019 1 commit
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The spi-nor controller defaults to BSPI mode, hence switch back to its default mode after MSPI operations (write or erase) are completed. Signed-off-by:
Rayagonda Kokatanur <rayagonda.kokatanur@broadcom.com> Reviewed-by:
Mark Brown <broonie@kernel.org> Reviewed-by:
Kamal Dasu <kdasu.kdev@gmail.com> Link: https://lore.kernel.org/r/1567139325-7912-1-git-send-email-rayagonda.kokatanur@broadcom.com Signed-off-by:
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- 07 Aug, 2019 1 commit
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Fix data transfer width settings based on DT field 'spi-rx-bus-width' to configure BSPI in single, dual or quad mode by using data width and not the command width. Fixes: 5f195ee7 ("spi: bcm-qspi: Implement the spi_mem interface") Signed-off-by:
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- 19 Jun, 2019 1 commit
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Thomas Gleixner authored
Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license version 2 as published by the free software foundation the gpl this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license version 2 gplv2 for more details you should have received a copy of the gnu general public license version 2 gplv2 along with this source code extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 16 file(s). Signed-off-by:
Thomas Gleixner <tglx@linutronix.de> Reviewed-by:
Enrico Weigelt <info@metux.net> Reviewed-by:
Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190604081201.771169395@linutronix.de Signed-off-by:
Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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- 11 Oct, 2018 2 commits
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Fixing/optimizing bcm_qspi_bspi_read() performance introduced two changes: 1) It added a loop to read all requested data using multiple BSPI ops. 2) It bumped max size of a single BSPI block request from 256 to 512 B. The later change resulted in occasional BSPI timeouts causing a regression. For some unknown reason hardware doesn't always handle reads as expected when using 512 B chunks. In such cases it may happen that BSPI returns amount of requested bytes without the last 1-3 ones. It provides the remaining bytes later but doesn't raise an interrupt until another LR start. Switching back to 256 B reads fixes that problem and regression. Fixes: 345309fa ("spi: bcm-qspi: Fix bcm_qspi_bspi_read() performance") Signed-off-by:
Rafał Miłecki <rafal@milecki.pl> Signed-off-by:
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During implementation of the new API bcm_qspi_bspi_set_flex_mode() has been modified breaking calculation of address length. An unnecessary multiplication was added breaking flash reads. Fixes: 5f195ee7 ("spi: bcm-qspi: Implement the spi_mem interface") Signed-off-by:
Boris Brezillon <boris.brezillon@bootlin.com> Signed-off-by:
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- 13 May, 2018 1 commit
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Patch http://patchwork.ozlabs.org/patch/905205/ has been partially applied, and changes to the bcm-qspi driver have been lost somehow (probably due to a conflict when applying the patch). Remove the ->spi_flash_read() bits from this driver to fix the build error. Fixes: c1f5ba70 ("spi: Get rid of the spi_flash_read() API") Signed-off-by:
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- 11 May, 2018 1 commit
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The spi_mem interface is meant to replace the ->spi_flash_read() one. Implement the ->exec_op() method to ease removal of the old interface. Not that ->spi_flash_read() is now implemented as a wrapper around the new bcm_qspi_exec_mem_op() function so that we can easily get rid of it when ->spi_flash_read() is removed. Signed-off-by:
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- 01 May, 2018 2 commits
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Always confirm the BSPI_MAST_N_BOOT_CTRL bit when enabling or disabling BSPI transfers. Fixes: 4e3b2d23 ("spi: bcm-qspi: Add BSPI spi-nor flash controller driver") Signed-off-by:
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Added fix for probing of spi-nor device non-zero chip selects. Set MSPI_CDRAM_PCS (peripheral chip select) with spi master for MSPI controller and not for MSPI/BSPI spi-nor master controller. Ensure setting of cs bit in chip select register on chip select change. Fixes: fa236a7e ("spi: bcm-qspi: Add Broadcom MSPI driver") Signed-off-by:
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- 14 Mar, 2018 1 commit
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For some reason, commit c0368e4d ("spi: bcm-qspi: Fix use after free in bcm_qspi_probe() in error path") has updated some gotos, but not all of them. This looks spurious, so fix it. Fixes: fa236a7e ("spi: bcm-qspi: Add Broadcom MSPI driver") Signed-off-by:
Christophe JAILLET <christophe.jaillet@wanadoo.fr> Signed-off-by:
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- 12 Oct, 2017 1 commit
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There was an inversion in how the error path in bcm_qspi_probe() is done which would make us trip over a KASAN use-after-free report. Turns out that qspi->dev_ids does not get allocated until later in the probe process. Fix this by introducing a new lable: qspi_resource_err which takes care of cleaning up the SPI master instance. Fixes: fa236a7e ("spi: bcm-qspi: Add Broadcom MSPI driver") Signed-off-by:
Florian Fainelli <f.fainelli@gmail.com> Signed-off-by:
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- 28 Jul, 2017 1 commit
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The newly added broadcom qspi driver in drivers/spi produces a build warning when CONFIG_MTD is disabled: include/linux/mtd/cfi.h:76:2: #warning No CONFIG_MTD_CFI_Ix selected. No NOR chip support can work. [-Werror=cpp] There has been discussion on this in the link provided below. This fix in SPI controller drivers implementing the ->spi_flash_read handler, now uses the settings provided inside the 'struct spi_flash_read_message' parameter instead of hardcoding them. Made changes to bcm_qspi_bspi_set_flex_mode() to set the BSPI controller using the passed msg structure and remove the need to include <linux/mtd/spi-nor.h> file by removing all use of SPINOR_OP_READ* macros. Fixes: 4e3b2d23 ("spi: bcm-qspi: Add BSPI spi-nor flash controller driver") Link: https://patchwork.kernel.org/patch/9624585/ Signed-off-by:
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- 14 Feb, 2017 2 commits
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The driver core clears the driver data to NULL after device_release or on probe failure. Thus, it is not needed to manually clear the device driver data to NULL. Signed-off-by:
Wei Yongjun <weiyongjun1@huawei.com> Signed-off-by:
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Let bcm_qspi_bspi_flash_read() return all the requested bytes by breaking up the reads for BSPI block into optimal chunks size that a BSPI block can handle. Signed-off-by:
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- 10 Feb, 2017 1 commit
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Cyrille Pitchen authored
This patch renames the SPINOR_OP_* macros of the 4-byte address instruction set so the new names all share a common pattern: the 4-byte address name is built from the 3-byte address name appending the "_4B" suffix. The patch also introduces new op codes to support other SPI protocols such as SPI 1-4-4 and SPI 1-2-2. This is a transitional patch and will help a later patch of spi-nor.c to automate the translation from the 3-byte address op codes into their 4-byte address version. Signed-off-by:
Cyrille Pitchen <cyrille.pitchen@atmel.com> Acked-by:
Marek Vasut <marek.vasut@gmail.com>
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- 31 Jan, 2017 1 commit
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Added mspi read fallback under certain circumstances like unaligned buffer, address on short reads. Also takes care of version 3.0 spi controller where flash address crosses 4MB boundary on transfers the driver resorts to mspi reads. Signed-off-by:
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- 24 Sep, 2016 1 commit
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This spi driver uses the common spi-bcm-qspi driver and implements iProc SoCs specific interrupt controller. The common driver now calls the SoC handlers when present. Adding support for both muxed l1 and unmuxed interrupt sources. Signed-off-by:
Yendapally Reddy Dhananjaya Reddy <yendapally.reddy@broadcom.com> Signed-off-by:
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- 16 Sep, 2016 4 commits
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Fix to return a negative error code from the error handling case instead of 0, as done elsewhere in this function. Fixes: fa236a7e ("spi: bcm-qspi: Add Broadcom MSPI driver") Signed-off-by:
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In case of error, the function kcalloc() returns NULL pointer not ERR_PTR(). The IS_ERR() test in the return value check should be replaced with NULL test. Fixes: fa236a7e ("spi: bcm-qspi: Add Broadcom MSPI driver") Signed-off-by:
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The two power management functions are define inside of an #ifdef but referenced unconditionally, which is obviously broken when CONFIG_PM_SLEEP is not set: drivers/spi/spi-bcm-qspi.c:1300:13: error: 'bcm_qspi_suspend' undeclared here (not in a function) drivers/spi/spi-bcm-qspi.c:1301:13: error: 'bcm_qspi_resume' undeclared here (not in a function) This replaces the #ifdef with a __maybe_unused annotation that lets the compiler figure out whether to drop the functions itself, and uses SIMPLE_DEV_PM_OPS() to refer to the functions. This will also fill the freeze/thaw/poweroff/restore callback pointers in addition to suspend/resume, but as far as I can tell, this is what we want. Signed-off-by:
Arnd Bergmann <arnd@arndb.de> Fixes: fa236a7e ("spi: bcm-qspi: Add Broadcom MSPI driver") Signed-off-by:
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The header isn't actually needed here, but including it leads to a build warning when CONFIG_MTD is disabled: include/linux/mtd/cfi.h:76:2: #warning No CONFIG_MTD_CFI_Ix selected. No NOR chip support can work. [-Werror=cpp] Fixes: fa236a7e (spi: bcm-qspi: Add Broadcom MSPI driver) Signed-off-by:
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- 14 Sep, 2016 2 commits
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This change implements BSPI driver for Broadcom BRCMSTB, NS2, NSP SoCs works in combination with the MSPI controller driver and implements flash read acceleration and implements the spi_flash_read() method. Both MSPI and BSPI controllers are needed to access spi-nor flash. Signed-off-by:
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Master SPI driver for Broadcom settop, iProc SoCs. The driver is used for devices that use SPI protocol on BRCMSTB, NSP, NS2 SoCs. SoC platform driver call exported porbe(), remove() and suspend/resume pm_ops implemented in this common driver. Signed-off-by:
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