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2020-03-12mtd: spinand: micron: identify SPI NAND device with Continuous Read modeShivamurthy Shastri1-0/+16
Add SPINAND_HAS_CR_FEAT_BIT flag to identify the SPI NAND device with the Continuous Read mode. Some of the Micron SPI NAND devices have the "Continuous Read" feature enabled by default, which does not fit the subsystem needs. In this mode, the READ CACHE command doesn't require the starting column address. The device always output the data starting from the first column of the cache register, and once the end of the cache register reached, the data output continues through the next page. With the continuous read mode, it is possible to read out the entire block using a single READ command, and once the end of the block reached, the output pins become High-Z state. However, during this mode the read command doesn't output the OOB area. Hence, we disable the feature at probe time. Signed-off-by: Shivamurthy Shastri <sshivamurthy@micron.com> Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/20200311175735.2007-5-sshivamurthy@micron.com
2020-03-12mtd: spinand: micron: Add new Micron SPI NAND devicesShivamurthy Shastri1-0/+33
Add device table for M79A and M78A series Micron SPI NAND devices. Signed-off-by: Shivamurthy Shastri <sshivamurthy@micron.com> Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/20200311175735.2007-4-sshivamurthy@micron.com
2020-03-12mtd: spinand: micron: Describe the SPI NAND device MT29F2G01ABAGDShivamurthy Shastri1-0/+1
Add the SPI NAND device MT29F2G01ABAGD series number, size and voltage details as a comment. Signed-off-by: Shivamurthy Shastri <sshivamurthy@micron.com> Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/20200311175735.2007-3-sshivamurthy@micron.com
2020-03-12mtd: spinand: micron: Generalize the OOB layout structure and function namesShivamurthy Shastri1-14/+14
In order to add new Micron SPI NAND devices, we generalized the OOB layout structure and function names. Signed-off-by: Shivamurthy Shastri <sshivamurthy@micron.com> Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/20200311175735.2007-2-sshivamurthy@micron.com
2020-03-11mtd: spi-nor: remove mtk-quadspi driverChuanhong Guo3-574/+0
This driver is superseded by the new spi-mtk-nor driver. Signed-off-by: Chuanhong Guo <gch981213@gmail.com> Acked-by: Tudor Ambarus <tudor.ambarus@microchip.com> Link: https://lore.kernel.org/r/20200306085052.28258-5-gch981213@gmail.com Signed-off-by: Mark Brown <broonie@kernel.org>
2020-03-11mtd: rawnand: brcmnand: Add support for flash-edu for dma transfersKamal Dasu1-6/+287
Legacy mips soc platforms that have controller v5.0 and 6.0 use flash-edu block for dma transfers. This change adds support for nand dma transfers using the EDU block. Signed-off-by: Kamal Dasu <kdasu.kdev@gmail.com> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/20200122213313.35820-4-kdasu.kdev@gmail.com
2020-03-11mtd: rawnand: cadence: reinit completion before executing a new commandPiotr Sroka1-0/+1
Reing the completion object before executing CDMA command to make sure the 'done' flag is OK. Fixes: ec4ba01e894d ("mtd: rawnand: Add new Cadence NAND driver to MTD subsystem") Cc: stable@vger.kernel.org Signed-off-by: Piotr Sroka <piotrs@cadence.com> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/1581328530-29966-4-git-send-email-piotrs@cadence.com
2020-03-11mtd: rawnand: cadence: change bad block marker sizePiotr Sroka1-6/+3
Increase bad block marker size from one byte to two bytes. Bad block marker is handled by skip bytes feature of HPNFC. Controller expects this value to be an even number. Fixes: ec4ba01e894d ("mtd: rawnand: Add new Cadence NAND driver to MTD subsystem") Cc: stable@vger.kernel.org Signed-off-by: Piotr Sroka <piotrs@cadence.com> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/1581328530-29966-3-git-send-email-piotrs@cadence.com
2020-03-11mtd: rawnand: cadence: fix the calculation of the avaialble OOB sizePiotr Sroka1-1/+2
The value of cdns_chip->sector_count is not known at the moment of the derivation of ecc_size, leading to a zero value. Fix this by assigning ecc_size later in the code. Fixes: ec4ba01e894d ("mtd: rawnand: Add new Cadence NAND driver to MTD subsystem") Cc: stable@vger.kernel.org Signed-off-by: Piotr Sroka <piotrs@cadence.com> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/1581328530-29966-2-git-send-email-piotrs@cadence.com
2020-03-11mtd: rawnand: cadence: get meta data size from registersPiotr Sroka1-7/+14
Add checking size of BCH meta data size in capabilities registers instead of using fixed value. BCH meta data is used to keep data from NAND flash OOB area. Signed-off-by: Piotr Sroka <piotrs@cadence.com> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/1581328530-29966-1-git-send-email-piotrs@cadence.com
2020-03-11mtd: rawnand: Macronix: Add support for block protectionMason Yang1-0/+72
Macronix AC/AD series support using SET_FEATURES to change block protection and unprotection. Block protection support can be checked with GET_FEATURES. Signed-off-by: Mason Yang <masonccyang@mxic.com.tw> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/1583220084-10890-3-git-send-email-masonccyang@mxic.com.tw
2020-03-11mtd: rawnand: Add support for manufacturer specific lock/unlock operationMason Yang1-2/+34
Add nand_lock() & nand_unlock() for manufacturer specific lock & unlock operation while the device supports Block Portection function. Signed-off-by: Mason Yang <masonccyang@mxic.com.tw> Reviewed-by: Miquel Raynal <miquel.raynal@bootlin.com> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/1583220084-10890-2-git-send-email-masonccyang@mxic.com.tw
2020-03-11mtd: rawnand: ingenic: Add dependency on MIPS || COMPILE_TESTPaul Cercueil1-0/+1
This driver has no arch-specific instructions but is only ever useful on MIPS; so disable this driver if we're not compiling for MIPS, unless the driver is compile-tested. Signed-off-by: Paul Cercueil <paul@crapouillou.net> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/20200302184509.10666-1-paul@crapouillou.net
2020-03-11mtd: rawnand: stm32_fmc2: Use dma_request_chan() instead ↵Peter Ujfalusi1-7/+37
dma_request_slave_channel() dma_request_slave_channel() is a wrapper on top of dma_request_chan() eating up the error code. Use using dma_request_chan() directly and inform user of error in case the DMA request failed. Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/20200227123749.24064-8-peter.ujfalusi@ti.com
2020-03-11mtd: rawnand: qcom: Use dma_request_chan() instead dma_request_slave_channel()Peter Ujfalusi1-17/+33
dma_request_slave_channel() is a wrapper on top of dma_request_chan() eating up the error code. Use using dma_request_chan() directly to return the real error code. Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/20200227123749.24064-7-peter.ujfalusi@ti.com
2020-03-11mtd: rawnand: qcom: Release resources on failure within qcom_nandc_alloc()Peter Ujfalusi1-27/+34
In case when DMA channel request or alloc_bam_transaction() fails, dma_unmap_single() and any channels already requested should be released. Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/20200227123749.24064-6-peter.ujfalusi@ti.com
2020-03-11mtd: rawnand: sunxi: Use dma_request_chan() instead dma_request_slave_channel()Peter Ujfalusi1-5/+10
dma_request_slave_channel() is a wrapper on top of dma_request_chan() eating up the error code. By using dma_request_chan() directly the driver can support deferred probing against DMA. Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com> Acked-by: Maxime Ripard <mripard@kernel.org> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/20200227123749.24064-5-peter.ujfalusi@ti.com
2020-03-11mtd: rawnand: marvell: Use dma_request_chan() instead ↵Peter Ujfalusi1-5/+8
dma_request_slave_channel() dma_request_slave_channel() is a wrapper on top of dma_request_chan() eating up the error code. Use using dma_request_chan() directly to return the real error code. Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/20200227123749.24064-4-peter.ujfalusi@ti.com
2020-03-11mtd: rawnand: marvell: Release DMA channel on errorPeter Ujfalusi1-6/+19
Release the DMA channel on errors after the channel has been successfully requested. Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/20200227123749.24064-3-peter.ujfalusi@ti.com
2020-03-11mtd: rawnand: gpmi: Use dma_request_chan() instead dma_request_slave_channel()Peter Ujfalusi1-10/+11
dma_request_slave_channel() is a wrapper on top of dma_request_chan() eating up the error code. Use using dma_request_chan() directly to return the real error code. Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/20200227123749.24064-2-peter.ujfalusi@ti.com
2020-03-11mtd: rawnand: Replace zero-length array with flexible-array memberGustavo A. R. Silva6-6/+6
The current codebase makes use of the zero-length array language extension to the C90 standard, but the preferred mechanism to declare variable-length types such as these ones is a flexible array member[1][2], introduced in C99: struct foo { int stuff; struct boo array[]; }; By making use of the mechanism above, we will get a compiler warning in case the flexible array does not occur last in the structure, which will help us prevent some kind of undefined behavior bugs from being inadvertently introduced[3] to the codebase from now on. Also, notice that, dynamic memory allocations won't be affected by this change: "Flexible array members have incomplete type, and so the sizeof operator may not be applied. As a quirk of the original implementation of zero-length arrays, sizeof evaluates to zero."[1] This issue was found with the help of Coccinelle. [1] https://gcc.gnu.org/onlinedocs/gcc/Zero-Length.html [2] https://github.com/KSPP/linux/issues/21 [3] commit 76497732932f ("cxgb3/l2t: Fix undefined behaviour") Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com> Acked-by: Masahiro Yamada <yamada.masahiro@socionext.com> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/20200226222722.GA18020@embeddedor
2020-03-11mtd: spinand: Do not erase the block before writing a bad block markerFrieder Schrempf1-3/+0
Currently when marking a block, we use spinand_erase_op() to erase the block before writing the marker to the OOB area. Doing so without waiting for the operation to finish can lead to the marking failing silently and no bad block marker being written to the flash. In fact we don't need to do an erase at all before writing the BBM. The ECC is disabled for raw accesses to the OOB data and we don't need to work around any issues with chips reporting ECC errors as it is known to be the case for raw NAND. Fixes: 7529df465248 ("mtd: nand: Add core infrastructure to support SPI NANDs") Cc: stable@vger.kernel.org Signed-off-by: Frieder Schrempf <frieder.schrempf@kontron.de> Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/20200218100432.32433-4-frieder.schrempf@kontron.de
2020-03-11mtd: spinand: Explicitly use MTD_OPS_RAW to write the bad block marker to OOBFrieder Schrempf1-0/+1
When writing the bad block marker to the OOB area the access mode should be set to MTD_OPS_RAW as it is done for reading the marker. Currently this only works because req.mode is initialized to MTD_OPS_PLACE_OOB (0) and spinand_write_to_cache_op() checks for req.mode != MTD_OPS_AUTO_OOB. Fix this by explicitly setting req.mode to MTD_OPS_RAW. Fixes: 7529df465248 ("mtd: nand: Add core infrastructure to support SPI NANDs") Signed-off-by: Frieder Schrempf <frieder.schrempf@kontron.de> Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/20200218100432.32433-3-frieder.schrempf@kontron.de
2020-03-11mtd: spinand: Stop using spinand->oobbuf for buffering bad block markersFrieder Schrempf1-7/+7
For reading and writing the bad block markers, spinand->oobbuf is currently used as a buffer for the marker bytes. During the underlying read and write operations to actually get/set the content of the OOB area, the content of spinand->oobbuf is reused and changed by accessing it through spinand->oobbuf and/or spinand->databuf. This is a flaw in the original design of the SPI NAND core and at the latest from 13c15e07eedf ("mtd: spinand: Handle the case where PROGRAM LOAD does not reset the cache") on, it results in not having the bad block marker written at all, as the spinand->oobbuf is cleared to 0xff after setting the marker bytes to zero. To fix it, we now just store the two bytes for the marker on the stack and let the read/write operations copy it from/to the page buffer later. Fixes: 7529df465248 ("mtd: nand: Add core infrastructure to support SPI NANDs") Cc: stable@vger.kernel.org Signed-off-by: Frieder Schrempf <frieder.schrempf@kontron.de> Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/20200218100432.32433-2-frieder.schrempf@kontron.de
2020-03-11mtd: rawnand: Add support for Macronix NAND randomizerMason Yang1-0/+81
Macronix NANDs support randomizer operation for user data scrambled, which can be enabled with a SET_FEATURE. User data written to the NAND device without randomizer is still readable after randomizer function enabled. The penalty of randomizer are subpage accesses prohibited and more time period is needed in program operation and entering deep power-down mode. i.e., tPROG 300us to 340us(randomizer enabled) For more high-reliability concern, if subpage write not available with hardware ECC and then to enable randomizer is recommended by default. Driver checks byte 167 of Vendor Blocks in ONFI parameter page table to see if this high-reliability function is supported. By adding a new specific DT property in children nodes to enable randomizer function. Signed-off-by: Mason Yang <masonccyang@mxic.com.tw> Reviewed-by: Miquel Raynal <miquel.raynal@bootlin.com> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/1581922600-25461-2-git-send-email-masonccyang@mxic.com.tw
2020-03-11mtd: rawnand: ams-delta: Rename structures and functions to gpio_nand*Janusz Krzysztofik1-44/+42
Another step in preparation for merging the driver with "gpio-nand". Signed-off-by: Janusz Krzysztofik <jmkrzyszt@gmail.com> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/20200212003929.6682-15-jmkrzyszt@gmail.com
2020-03-11mtd: rawnand: ams-delta: Make the driver custom I/O readyJanusz Krzysztofik1-6/+26
In order to be merged with "gpio-nand", the driver must support custom (non-GPIO) I/O accessors. Allow platforms to omit data GPIO port as well as NWE pin info from device setup. For the driver to still work on such platform, custom I/O accessors as well as a custom probe function which initialises the driver private structure with those accessors must be added to the driver. Signed-off-by: Janusz Krzysztofik <jmkrzyszt@gmail.com> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/20200212003929.6682-14-jmkrzyszt@gmail.com
2020-03-11mtd: rawnand: ams-delta: Drop useless local variableJanusz Krzysztofik1-5/+3
For consistency with adjacent code patterns used in the driver probe function, store data GPIO array pointer directly in a respective field of the driver private structure instead of storing it intermediately in a local variable for error checking. Signed-off-by: Janusz Krzysztofik <jmkrzyszt@gmail.com> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/20200212003929.6682-13-jmkrzyszt@gmail.com
2020-03-11mtd: rawnand: ams-delta: Support custom driver initialisationJanusz Krzysztofik1-0/+11
In preparation for extending the driver with custom I/O support, try to obtain device specific initialisation routine from a matching device table entry and run it as an additional step of device probe. Signed-off-by: Janusz Krzysztofik <jmkrzyszt@gmail.com> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/20200212003929.6682-12-jmkrzyszt@gmail.com
2020-03-11mtd: rawnand: ams-delta: Add module device tablesJanusz Krzysztofik1-0/+18
In preparation for merging the driver with "gpio-nand", introduce module device tables where new device models can be accommodated as soon as respective support is added. Signed-off-by: Janusz Krzysztofik <jmkrzyszt@gmail.com> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/20200212003929.6682-11-jmkrzyszt@gmail.com
2020-03-11mtd: lpddr: Fix a double free in probe()Dan Carpenter1-1/+0
This function is only called from lpddr_probe(). We free "lpddr" both here and in the caller, so it's a double free. The best place to free "lpddr" is in lpddr_probe() so let's delete this one. Fixes: 8dc004395d5e ("[MTD] LPDDR qinfo probing.") Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/20200228092554.o57igp3nqhyvf66t@kili.mountain
2020-03-11mtd: fix spelling mistake "BlockMultiplerBits" -> "BlockMultiplierBits"Colin Ian King2-2/+2
There is a spelling mistake (missing i) in pr_info messages. Fix these. Signed-off-by: Colin Ian King <colin.king@canonical.com> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/20200208113612.817988-1-colin.king@canonical.com
2020-03-11mtd: implement proper partition handlingMiquel Raynal3-594/+363
Instead of collecting partitions in a flat list, create a hierarchy within the mtd_info structure: use a partitions list to keep track of the partitions of an MTD device (which might be itself a partition of another MTD device), a pointer to the parent device (NULL when the MTD device is the root one, not a partition). By also saving directly in mtd_info the offset of the partition, we can get rid of the mtd_part structure. While at it, be consistent in the naming of the mtd_info structures to ease the understanding of the new hierarchy: these structures are usually called 'mtd', unless there are multiple instances of the same structure. In this case, there is usually a parent/child bound so we will call them 'parent' and 'child'. Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/20200114090952.11232-1-miquel.raynal@bootlin.com
2020-03-09mtd: rawnand: ams-delta: Handle more GPIO pins as optionalJanusz Krzysztofik1-2/+4
In order to make the driver more useful on platforms other than Amstrad Delta, allow GPIO descriptor pointers of possibly non-critical NWP and NCE pins to be initialised as NULL. Signed-off-by: Janusz Krzysztofik <jmkrzyszt@gmail.com> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/20200212003929.6682-10-jmkrzyszt@gmail.com
2020-03-09mtd: rawnand: ams-delta: Make read pulses optionalJanusz Krzysztofik1-3/+6
Allow platforms to omit NRE pin from device configuration by requesting that pin as optional. In that case, also don't apply read pulse width from chip SDR timings. There should be no need for further code adjustments as gpiolib can handle NULL GPIO descriptor pointers. Signed-off-by: Janusz Krzysztofik <jmkrzyszt@gmail.com> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/20200212003929.6682-9-jmkrzyszt@gmail.com
2020-03-09mtd: rawnand: ams-delta: Don't hardcode read/write pulse widthsJanusz Krzysztofik1-2/+27
Instead of forcing Amstrad Delta specific read/write pulse widths, use variables initialised from respective fields of chip SDR timings. Signed-off-by: Janusz Krzysztofik <jmkrzyszt@gmail.com> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/20200212003929.6682-8-jmkrzyszt@gmail.com
2020-03-09mtd: rawnand: ams-delta: Push inversion handling to gpiolibJanusz Krzysztofik1-11/+11
Let platforms take care of declaring correct GPIO pin polarity so we can just ask a GPIO line to be asserted or deasserted and gpiolib deals with the rest depending on how the platform is configured. Inspired by similar changes to regulator drivers by Linus Walleij <linus.walleij@linaro.org>, thanks! Signed-off-by: Janusz Krzysztofik <jmkrzyszt@gmail.com> Acked-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/20200212003929.6682-7-jmkrzyszt@gmail.com
2020-03-09mtd: rawnand: ams-delta: Enable OF partition info supportJanusz Krzysztofik1-0/+1
Provide MTD layer with device OF node info required by OF partition parser. Signed-off-by: Janusz Krzysztofik <jmkrzyszt@gmail.com> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/20200212003929.6682-6-jmkrzyszt@gmail.com
2020-03-09mtd: rawnand: ams-delta: Drop board specific partition infoJanusz Krzysztofik1-27/+2
Now as we support fetching partition info from device platform data and the Amstrad Delta board file provides that info, drop it from the driver code. v2: rebase on top of gpio_nand_platdata extension Signed-off-by: Janusz Krzysztofik <jmkrzyszt@gmail.com> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/20200212003929.6682-5-jmkrzyszt@gmail.com
2020-03-09mtd: rawnand: ams-delta: Use struct gpio_nand_platdataJanusz Krzysztofik1-2/+10
In order to be able to move the hardcoded Amstrad Delta partition info from the driver code to the board file, reuse gpio_nand_platdata structure owned by "gpio-nand" driver and try to obtain information on device partitions from device platform data. Signed-off-by: Janusz Krzysztofik <jmkrzyszt@gmail.com> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/20200212003929.6682-3-jmkrzyszt@gmail.com
2020-03-09mtd: rawnand: ams-delta: Write protect device during probeJanusz Krzysztofik1-2/+16
Initialise NWP GPIO pin as asserted to protect the device from hazard during setup of other GPIO pins. Signed-off-by: Janusz Krzysztofik <jmkrzyszt@gmail.com> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/20200212003929.6682-2-jmkrzyszt@gmail.com
2020-03-09mtd: rawnand: ingenic: Use devm_platform_ioremap_resource()Paul Cercueil1-3/+1
Use devm_platform_ioremap_resource() instead of platform_get_resource() + devm_ioremap_resource(). Signed-off-by: Paul Cercueil <paul@crapouillou.net> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/20200211173151.27587-1-paul@crapouillou.net
2020-03-09mtd: spinand: rework detect procedure for different READ_ID operationChuanhong Guo7-181/+113
Currently there are 3 different variants of read_id implementation: 1. opcode only. Found in GD5FxGQ4xF. 2. opcode + 1 addr byte. Found in GD5GxGQ4xA/E 3. opcode + 1 dummy byte. Found in other currently supported chips. Original implementation was for variant 1 and let detect function of chips with variant 2 and 3 to ignore the first byte. This isn't robust: 1. For chips of variant 2, if SPI master doesn't keep MOSI low during read, chip will get a random id offset, and the entire id buffer will shift by that offset, causing detect failure. 2. For chips of variant 1, if it happens to get a devid that equals to manufacture id of variant 2 or 3 chips, it'll get incorrectly detected. This patch reworks detect procedure to address problems above. New logic do detection for all variants separatedly, in 1-2-3 order. Since all current detect methods do exactly the same id matching procedure, unify them into core.c and remove detect method from manufacture_ops. Tested on GD5F1GQ4UAYIG and W25N01GVZEIG. Signed-off-by: Chuanhong Guo <gch981213@gmail.com> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/20200208074439.146296-1-gch981213@gmail.com
2020-03-09mtd: spinand: toshiba: Add comment about Kioxia IDYoshio Furuyama2-0/+2
Add a comment above NAND_MFR_TOSHIBA and SPINAND_MFR_TOSHIBA definitions that Toshiba and Kioxia ID are the same. Since its independence from Toshiba Group, Toshiba memory Co has become Kioxia Co. Signed-off-by: Yoshio Furuyama <ytc-mb-yfuruyama7@kioxia.com> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/1581051561-7302-1-git-send-email-ytc-mb-yfuruyama7@kioxia.com
2020-03-09mtd: rawnand: denali: deassert write protect pinMasahiro Yamada1-0/+1
If the write protect signal from this IP is connected to the NAND device, this IP can handle the WP# pin via the WRITE_PROTECT register. The Denali NAND Flash Memory Controller User's Guide describes this register like follows: When the controller is in reset, the WP# pin is always asserted to the device. Once the reset is removed, the WP# is de-asserted. The software will then have to come and program this bit to assert/de-assert the same. 1 - Write protect de-assert 0 - Write protect assert The default value is 1, so the write protect is de-asserted after the reset is removed. The driver can write to the device unless someone has explicitly cleared register before booting the kernel. The boot ROM of some UniPhier SoCs (LD4, Pro4, sLD8, Pro5) is the case; the boot ROM clears the WRITE_PROTECT register when the system is booting from the NAND device, so the NAND device becomes read-only. Set it to 1 in the driver in order to allow the write access to the device. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/20200127123934.11847-1-yamada.masahiro@socionext.com
2020-03-09mtd: rawnand: free the nand_device objectChristophe Kerello1-0/+2
This patch releases the resources allocated in nanddev_init function. Fixes: a7ab085d7c16 ("mtd: rawnand: Initialize the nand_device object") Signed-off-by: Christophe Kerello <christophe.kerello@st.com> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/1579767768-32295-1-git-send-email-christophe.kerello@st.com
2020-03-09mtd: rawnand: Ensure nand_soft_waitrdy wait period is enoughMartin Devera1-1/+6
The used way to compute jiffies timeout brokes when jiffie difference is 1. Assume that nand_soft_waitrdy is called with timeout_ms==1. Jiffies are 1000 for example (assume something more like 1000.99 - just before incrementing to 1001). We compute timeout_ms = 1000+msecs_to_jiffies(1) = 1001. nand_read_data_op is called for the first time and returns 0. During the call jiffies changes to 1001 thus "while loop" ends here (wrongly). Notice that routine was called with expected timeout 1ms but actual timeout used was something between 0...1ms. Fixes STM32MP1 FMC2 NAND controller which sometimes failed exactly in this way. Signed-off-by: Martin Devera <devik@eaxlabs.cz> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/20200116135431.17480-1-devik@eaxlabs.cz
2020-03-03mtd: hyperbus: move direct mapping setup to AM654 HBMC driverSergei Shtylyov2-11/+12
The Hyperbus core expects that HyperFlash is always directly mapped for both read and write, but in reality this may not always be the case, e.g. Renesas RPC-IF has read only direct mapping. Move the code setting up the direct mapping from the Hyperbus core to thh TI AM554 HBMC driver. Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com> Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com>
2020-03-03mtd: hyperbus: Add proper error message for missing compatibleDirk Behme1-1/+3
In case the compatible "cypress,hyperflash" is not given output a proper error message. Signed-off-by: Dirk Behme <dirk.behme@de.bosch.com> Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com>
2020-02-27mtd: spi-nor: Refactor spi_nor_read_id()Jonathan Neuschäfer1-14/+12
- Don't use `tmp` for two purposes (return value, loop counter). Instead, use `i` for the loop counter, and `ret` for the return value. - Don't use tabs between type and name in variable declarations, for consistency with other functions in spi-nor.c. - Rewrite nested `if`s as `if (a && b)`. - Remove `info` variable, and use spi_nor_ids[i] directly. Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net> [tudor.ambarus@microchip.com: change i's type from int to unsigned int, reorder local variables] Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com>
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