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2020-03-17mtd: spi-nor: Move Fujitsu bits out of core.cBoris Brezillon4-3/+23
Create a SPI NOR manufacturer driver for Fujitsu chips, and move the Fujitsu definitions outside of core.c. Signed-off-by: Boris Brezillon <bbrezillon@kernel.org> Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com>
2020-03-17mtd: spi-nor: Move Everspin bits out of core.cBoris Brezillon4-6/+30
Create a SPI NOR manufacturer driver for Everspin chips, and move the Everspin definitions outside of core.c. Signed-off-by: Boris Brezillon <bbrezillon@kernel.org> Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com>
2020-03-17mtd: spi-nor: Move ESMT bits out of core.cBoris Brezillon4-5/+28
Create a SPI NOR manufacturer driver for ESMT chips, and move the ESMT definitions outside of core.c. Signed-off-by: Boris Brezillon <bbrezillon@kernel.org> Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com>
2020-03-17mtd: spi-nor: Move Eon bits out of core.cBoris Brezillon4-17/+37
Create a SPI NOR manufacturer driver for Eon chips, and move the Eon definitions outside of core.c. Signed-off-by: Boris Brezillon <bbrezillon@kernel.org> Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com>
2020-03-17mtd: spi-nor: Move Atmel bits out of core.cBoris Brezillon4-29/+53
Create a SPI NOR manufacturer driver for Atmel chips, and move the Atmel definitions outside of core.c. Signed-off-by: Boris Brezillon <bbrezillon@kernel.org> Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com>
2020-03-17mtd: spi-nor: Add the concept of SPI NOR manufacturer driverBoris Brezillon2-11/+81
Declare a spi_nor_manufacturer struct and add basic building blocks to move manufacturer specific code outside of the core. Signed-off-by: Boris Brezillon <bbrezillon@kernel.org> Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com> Reviewed-by: Vignesh Raghavendra <vigneshr@ti.com>
2020-03-17mtd: spi-nor: Expose stuctures and functions to manufacturer driversBoris Brezillon2-158/+169
Expose the flash_info struct and some function prototypes that will be used by manufacturers. Signed-off-by: Boris Brezillon <bbrezillon@kernel.org> Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com> Reviewed-by: Vignesh Raghavendra <vigneshr@ti.com>
2020-03-16mtd: spi-nor: Move SFDP logic out of the coreTudor Ambarus5-1297/+1349
It makes the core file a bit smaller and provides better separation between the SFDP parsing and core logic. Keep the core.h and sfdp.h definitions private in drivers/mtd/spi-nor/. Both expose just the definitions that are required by the core and manufacturer drivers. None of the SPI NOR controller drivers should include them. Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com> Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com> Reviewed-by: Vignesh Raghavendra <vigneshr@ti.com>
2020-03-16mtd: spi-nor: Prepare core / manufacturer code splitBoris Brezillon13-81/+86
Move all SPI NOR controller drivers to a controllers/ sub-directory so that we only have SPI NOR related source files under drivers/mtd/spi-nor/. Rename spi-nor.c into core.c, we are about to split this file in multiple source files (one per manufacturer, plus one for the SFDP parsing logic). Signed-off-by: Boris Brezillon <bbrezillon@kernel.org> Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com> Reviewed-by: Vignesh Raghavendra <vigneshr@ti.com>
2020-03-16mtd: spi-nor: Emphasise which is the generic set_4byte_addr_mode() methodTudor Ambarus1-16/+18
Rename (*set_4byte)() to (*set_4byte_addr_mode)() for a better differentiation between the 4 byte address mode and opcodes. Rename macronix_set_4byte() to spi_nor_set_4byte_addr_mode(), it will be the only 4 byte address mode method exposed to the manufacturer drivers. Here's how the manufacturers enter and exit the 4 byte address mode: - eon, gidadevice, issi, macronix, xmc use EN4B/EX4B - micron-st needs WEN. st_micron_set_4byte_addr_mode() will become a private method, as they are the only ones that need WEN before the EN4B/EX4B commands. - newer spansion have a 4BAM opcode (this translates to a new, public command). Older spansion flashes use the BRWR command (legacy in core.c -> spansion_set_4byte_addr_mode()) - winbond's method is hackish and may be reason for just a flash fixup hook -> private method Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com> Reviewed-by: Vignesh Raghavendra <vigneshr@ti.com>
2020-03-16mtd: spi-nor: Stop prefixing generic functions with a manufacturer nameBoris Brezillon1-35/+35
Replace the manufacturer prefix by something describing more precisely what those functions do. Signed-off-by: Boris Brezillon <bbrezillon@kernel.org> [tudor.ambarus@microchip.com: prepend spi_nor_ to all modified methods.] Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com> Reviewed-by: Vignesh Raghavendra <vigneshr@ti.com>
2020-03-13Merge tag 'mtk-mtd-spi-move' into spi-nor/nextTudor Ambarus3-574/+0
spi: Rewrite mtk-quadspi spi-nor driver with spi-mem This patchset from Chuanhong Guo <gch981213@gmail.com> adds a spi-mem driver for Mediatek SPI-NOR controller, which already has limited support by mtk-quadspi. This new driver can make use of full quadspi capability of this controller. The mtk-quadspi driver is replaced by the new spi-mtk-nor driver. Merge it in spi-nor/next to avoid conflicts during the release cycle.
2020-03-12mtd: spinand: micron: Add new Micron SPI NAND devices with multiple diesShivamurthy Shastri1-0/+58
Add device table for new Micron SPI NAND devices, which have multiple dies. Also, enable support to select the dies. 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/20200311175735.2007-7-sshivamurthy@micron.com
2020-03-12mtd: spinand: micron: Add M70A series Micron SPI NAND devicesShivamurthy Shastri1-0/+22
Add device table for M70A 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/20200311175735.2007-6-sshivamurthy@micron.com
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 dma_request_slave_channel()Peter Ujfalusi1-7/+37
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 dma_request_slave_channel()Peter Ujfalusi1-5/+8
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 Raynal3-592/+361
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
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