Commit Graph

3691 Commits

Author SHA1 Message Date
Miquel Raynal 025a06c110 mtd: Convert fallthrough comments into statements
Use Joe Perches cvt_fallthrough.pl script to convert

	/* fallthrough */

comments (and its derivatives) into a

	fallthrough;

statement. This automatically drops useless ones.

Do it MTD-wide.

Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Acked-by: Vignesh Raghavendra <vigneshr@ti.com>
Acked-by: Tudor Ambarus <tudor.ambarus@microchip.com>
Acked-by: Richard Weinberger <richard@nod.at>
Link: https://lore.kernel.org/linux-mtd/20200325212115.14170-1-miquel.raynal@bootlin.com
2020-03-30 10:14:54 +02:00
Miquel Raynal 699274b1a1 Raw NAND core changes:
* Add support for manufacturer specific suspend/resume operation
 * Add support for manufacturer specific lock/unlock operation
 * Replace zero-length array with flexible-array member
 * Fix a typo ("manufecturer")
 * Ensure nand_soft_waitrdy wait period is enough
 
 Raw NAND controller driver changes:
 * Brcmnand:
 Add support for flash-edu for dma transfers (+ bindings)
 * Cadence:
 Reinit completion before executing a new command
 Change bad block marker size
 Fix the calculation of the avaialble OOB size
 Get meta data size from registers
 * Qualcom:
 Use dma_request_chan() instead dma_request_slave_channel()
 Release resources on failure within qcom_nandc_alloc()
 * Allwinner:
 Use dma_request_chan() instead dma_request_slave_channel()
 * Marvell:
 Use dma_request_chan() instead dma_request_slave_channel()
 Release DMA channel on error
 * Freescale:
 Use dma_request_chan() instead dma_request_slave_channel()
 * Macronix:
 Add support for Macronix NAND randomizer (+ bindings)
 * Ams-delta:
 Rename structures and functions to gpio_nand*
 Make the driver custom I/O ready
 Drop useless local variable
 Support custom driver initialisation
 Add module device tables
 Handle more GPIO pins as optional
 Make read pulses optional
 Don't hardcode read/write pulse widths
 Push inversion handling to gpiolib
 Enable OF partition info support
 Drop board specific partition info
 Use struct gpio_nand_platdata
 Write protect device during probe
 * Ingenic:
 Use devm_platform_ioremap_resource()
 Add dependency on MIPS || COMPILE_TEST
 * Denali:
 Deassert write protect pin
 * ST:
 Use dma_request_chan() instead dma_request_slave_channel()
 
 Raw NAND chip driver changes:
 * Toshiba:
 Support reading the number of bitflips for BENAND (Built-in ECC NAND)
 * Macronix:
 Add support for deep power down mode
 Add support for block protection
 
 SPI-NAND core changes:
 * Do not erase the block before writing a bad block marker
 * Explicitly use MTD_OPS_RAW to write the bad block marker to OOB
 * Stop using spinand->oobbuf for buffering bad block markers
 * Rework detect procedure for different READ_ID operation
 
 SPI-NAND driver changes:
 * Toshiba:
 Support for new Kioxia Serial NAND
 Rename function name to change suffix and prefix (8Gbit)
 Add comment about Kioxia ID
 * Micron:
 Add new Micron SPI NAND devices with multiple dies
 Add M70A series Micron SPI NAND devices
 identify SPI NAND device with Continuous Read mode
 Add new Micron SPI NAND devices
 Describe the SPI NAND device MT29F2G01ABAGD
 Generalize the OOB layout structure and function names
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Merge tag 'nand/for-5.7' into mtd/next

Raw NAND core changes:
* Add support for manufacturer specific suspend/resume operation
* Add support for manufacturer specific lock/unlock operation
* Replace zero-length array with flexible-array member
* Fix a typo ("manufecturer")
* Ensure nand_soft_waitrdy wait period is enough

Raw NAND controller driver changes:
* Brcmnand:
Add support for flash-edu for dma transfers (+ bindings)
* Cadence:
Reinit completion before executing a new command
Change bad block marker size
Fix the calculation of the avaialble OOB size
Get meta data size from registers
* Qualcom:
Use dma_request_chan() instead dma_request_slave_channel()
Release resources on failure within qcom_nandc_alloc()
* Allwinner:
Use dma_request_chan() instead dma_request_slave_channel()
* Marvell:
Use dma_request_chan() instead dma_request_slave_channel()
Release DMA channel on error
* Freescale:
Use dma_request_chan() instead dma_request_slave_channel()
* Macronix:
Add support for Macronix NAND randomizer (+ bindings)
* Ams-delta:
Rename structures and functions to gpio_nand*
Make the driver custom I/O ready
Drop useless local variable
Support custom driver initialisation
Add module device tables
Handle more GPIO pins as optional
Make read pulses optional
Don't hardcode read/write pulse widths
Push inversion handling to gpiolib
Enable OF partition info support
Drop board specific partition info
Use struct gpio_nand_platdata
Write protect device during probe
* Ingenic:
Use devm_platform_ioremap_resource()
Add dependency on MIPS || COMPILE_TEST
* Denali:
Deassert write protect pin
* ST:
Use dma_request_chan() instead dma_request_slave_channel()

Raw NAND chip driver changes:
* Toshiba:
Support reading the number of bitflips for BENAND (Built-in ECC NAND)
* Macronix:
Add support for deep power down mode
Add support for block protection

SPI-NAND core changes:
* Do not erase the block before writing a bad block marker
* Explicitly use MTD_OPS_RAW to write the bad block marker to OOB
* Stop using spinand->oobbuf for buffering bad block markers
* Rework detect procedure for different READ_ID operation

SPI-NAND driver changes:
* Toshiba:
Support for new Kioxia Serial NAND
Rename function name to change suffix and prefix (8Gbit)
Add comment about Kioxia ID
* Micron:
Add new Micron SPI NAND devices with multiple dies
Add M70A series Micron SPI NAND devices
identify SPI NAND device with Continuous Read mode
Add new Micron SPI NAND devices
Describe the SPI NAND device MT29F2G01ABAGD
Generalize the OOB layout structure and function names
2020-03-30 10:14:19 +02:00
Yoshio Furuyama fca88925d7 mtd: rawnand: toshiba: Support reading the number of bitflips for BENAND (Built-in ECC NAND)
Add support vendor specific commands for KIOXIA CORPORATION BENAND.
The actual bitflips number can be retrieved by this command.

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/1585124572-4693-1-git-send-email-ytc-mb-yfuruyama7@kioxia.com
2020-03-25 22:13:04 +01:00
Yoshio Furuyama 798fcdd010 mtd: spinand: toshiba: Support for new Kioxia Serial NAND
Add support for new Kioxia products.
The new Kioxia products support program load x4 command, and have
HOLD_D bit which is equivalent to QE bit.

Signed-off-by: Yoshio Furuyama <ytc-mb-yfuruyama7@kioxia.com>
Reviewed-by: Frieder Schrempf <frieder.schrempf@kontron.de>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/aa69e455beedc5ce0d7141359b9364ed8aec9e65.1584949601.git.ytc-mb-yfuruyama7@kioxia.com
2020-03-24 22:51:22 +01:00
Yoshio Furuyama 6b49e58d6d mtd: spinand: toshiba: Rename function name to change suffix and prefix (8Gbit)
The suffix was changed from "G" to "J" to classify between 1st generation
and 2nd generation serial NAND devices (which now belong to the Kioxia
brand).
As reference that's
1st generation device of 1Gbit product is "TC58CVG0S3HRAIG"
2nd generation device of 1Gbit product is "TC58CVG0S3HRAIJ".

The 8Gbit type "TH58CxG3S0HRAIJ" is new to Kioxia's serial NAND lineup and
the prefix was changed from "TC58" to "TH58".

Thus the functions were renamed from tc58cxgxsx_*() to tx58cxgxsxraix_*().

Signed-off-by: Yoshio Furuyama <ytc-mb-yfuruyama7@kioxia.com>
Reviewed-by: Frieder Schrempf <frieder.schrempf@kontron.de>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/0dedd9869569a17625822dba87878254d253ba0e.1584949601.git.ytc-mb-yfuruyama7@kioxia.com
2020-03-24 22:51:19 +01:00
Mason Yang 19301d5499 mtd: rawnand: macronix: Add support for deep power down mode
Macronix AD series support deep power down mode for a minimum
power consumption state.

Overload nand_suspend() & nand_resume() in Macronix specific code to
support deep power down mode.

Signed-off-by: Mason Yang <masonccyang@mxic.com.tw>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
2020-03-24 22:51:01 +01:00
Mason Yang adc6162b9a mtd: rawnand: Add support for manufacturer specific suspend/resume operation
Patch nand_suspend() & nand_resume() to let manufacturers overwrite
suspend/resume operations.

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/1584517348-14486-2-git-send-email-masonccyang@mxic.com.tw
2020-03-24 22:44:45 +01:00
Shivamurthy Shastri 9f9ae0c253 mtd: spinand: micron: Add new Micron SPI NAND devices with multiple dies
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
2020-03-12 13:33:36 +01:00
Shivamurthy Shastri a7e5daccc3 mtd: spinand: micron: Add M70A series Micron SPI NAND devices
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
2020-03-12 13:33:34 +01:00
Shivamurthy Shastri 0bc68af913 mtd: spinand: micron: identify SPI NAND device with Continuous Read mode
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
2020-03-12 13:33:32 +01:00
Shivamurthy Shastri a15335a17f mtd: spinand: micron: Add new Micron SPI NAND devices
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
2020-03-12 13:33:30 +01:00
Shivamurthy Shastri 8511a3a993 mtd: spinand: micron: Describe the SPI NAND device MT29F2G01ABAGD
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
2020-03-12 13:33:28 +01:00
Shivamurthy Shastri d313704344 mtd: spinand: micron: Generalize the OOB layout structure and function names
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
2020-03-12 13:33:26 +01:00
Kamal Dasu a5d53ad26a mtd: rawnand: brcmnand: Add support for flash-edu for dma transfers
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
2020-03-11 16:21:38 +01:00
Piotr Sroka 0d7d6c8183 mtd: rawnand: cadence: reinit completion before executing a new command
Reing the completion object before executing CDMA command to make sure
the 'done' flag is OK.

Fixes: ec4ba01e89 ("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
2020-03-11 16:17:55 +01:00
Piotr Sroka 9bf1903bed mtd: rawnand: cadence: change bad block marker size
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: ec4ba01e89 ("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
2020-03-11 16:17:55 +01:00
Piotr Sroka e4578af035 mtd: rawnand: cadence: fix the calculation of the avaialble OOB size
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: ec4ba01e89 ("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
2020-03-11 16:17:55 +01:00
Piotr Sroka 397deafc02 mtd: rawnand: cadence: get meta data size from registers
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
2020-03-11 16:17:55 +01:00
Mason Yang 03a539c7a1 mtd: rawnand: Macronix: Add support for block protection
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
2020-03-11 16:17:55 +01:00
Mason Yang 92270086b7 mtd: rawnand: Add support for manufacturer specific lock/unlock operation
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
2020-03-11 16:17:55 +01:00
Paul Cercueil e015d72f32 mtd: rawnand: ingenic: Add dependency on MIPS || COMPILE_TEST
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
2020-03-11 16:17:55 +01:00
Peter Ujfalusi b35f79aa46 mtd: rawnand: stm32_fmc2: Use dma_request_chan() instead 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
2020-03-11 16:17:54 +01:00
Peter Ujfalusi 92f0f8efbd mtd: rawnand: qcom: Use dma_request_chan() instead 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/20200227123749.24064-7-peter.ujfalusi@ti.com
2020-03-11 16:17:54 +01:00
Peter Ujfalusi 80c3012e12 mtd: rawnand: qcom: Release resources on failure within qcom_nandc_alloc()
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
2020-03-11 16:17:54 +01:00
Peter Ujfalusi ac80c55b46 mtd: rawnand: sunxi: Use dma_request_chan() instead dma_request_slave_channel()
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
2020-03-11 16:17:54 +01:00
Peter Ujfalusi cf9e238948 mtd: rawnand: marvell: Use dma_request_chan() instead 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
2020-03-11 16:17:54 +01:00
Peter Ujfalusi aafe30baf4 mtd: rawnand: marvell: Release DMA channel on error
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
2020-03-11 16:17:54 +01:00
Peter Ujfalusi 7cd8c0adb4 mtd: rawnand: gpmi: Use dma_request_chan() instead 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/20200227123749.24064-2-peter.ujfalusi@ti.com
2020-03-11 16:17:54 +01:00
Gustavo A. R. Silva 49f1c33076 mtd: rawnand: Replace zero-length array with flexible-array member
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 7649773293 ("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
2020-03-11 16:17:54 +01:00
Frieder Schrempf b645ad39d5 mtd: spinand: Do not erase the block before writing a bad block marker
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: 7529df4652 ("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
2020-03-11 16:17:54 +01:00
Frieder Schrempf 621a7b780b mtd: spinand: Explicitly use MTD_OPS_RAW to write the bad block marker to OOB
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: 7529df4652 ("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
2020-03-11 16:17:54 +01:00
Frieder Schrempf 2148937501 mtd: spinand: Stop using spinand->oobbuf for buffering bad block markers
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 13c15e07ee ("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: 7529df4652 ("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
2020-03-11 16:17:54 +01:00
Mason Yang 8423465259 mtd: rawnand: Add support for Macronix NAND randomizer
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
2020-03-11 16:17:54 +01:00
Janusz Krzysztofik 16d00cd612 mtd: rawnand: ams-delta: Rename structures and functions to gpio_nand*
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
2020-03-11 16:17:53 +01:00
Janusz Krzysztofik 2b1dcee304 mtd: rawnand: ams-delta: Make the driver custom I/O ready
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
2020-03-11 16:17:53 +01:00
Janusz Krzysztofik edfd8d9c76 mtd: rawnand: ams-delta: Drop useless local variable
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
2020-03-11 16:17:53 +01:00
Janusz Krzysztofik d1b1a8f73a mtd: rawnand: ams-delta: Support custom driver initialisation
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
2020-03-11 16:17:53 +01:00
Janusz Krzysztofik 7c2f66a960 mtd: rawnand: ams-delta: Add module device tables
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
2020-03-11 16:17:53 +01:00
Colin Ian King 13a964665f mtd: fix spelling mistake "BlockMultiplerBits" -> "BlockMultiplierBits"
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
2020-03-11 14:49:30 +01:00
Janusz Krzysztofik ea5ea9fa6d mtd: rawnand: ams-delta: Handle more GPIO pins as optional
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
2020-03-09 14:51:02 +01:00
Janusz Krzysztofik 586a746b32 mtd: rawnand: ams-delta: Make read pulses optional
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
2020-03-09 14:51:02 +01:00
Janusz Krzysztofik ccada49b05 mtd: rawnand: ams-delta: Don't hardcode read/write pulse widths
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
2020-03-09 14:51:01 +01:00
Janusz Krzysztofik 241008ed0b mtd: rawnand: ams-delta: Push inversion handling to gpiolib
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
2020-03-09 14:51:01 +01:00
Janusz Krzysztofik 2cef3d4cf4 mtd: rawnand: ams-delta: Enable OF partition info support
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
2020-03-09 14:51:01 +01:00
Janusz Krzysztofik d7ffe387cc mtd: rawnand: ams-delta: Drop board specific partition info
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
2020-03-09 14:51:01 +01:00
Janusz Krzysztofik 1698ea3213 mtd: rawnand: ams-delta: Use struct gpio_nand_platdata
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
2020-03-09 14:51:01 +01:00
Janusz Krzysztofik 91a1abfb75 mtd: rawnand: ams-delta: Write protect device during probe
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
2020-03-09 14:51:01 +01:00
Paul Cercueil c4b7dd35d3 mtd: rawnand: ingenic: Use devm_platform_ioremap_resource()
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
2020-03-09 14:51:01 +01:00
Chuanhong Guo f1541773af mtd: spinand: rework detect procedure for different READ_ID operation
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
2020-03-09 14:50:19 +01:00
Yoshio Furuyama a91f8170df mtd: spinand: toshiba: Add comment about Kioxia ID
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
2020-03-09 14:49:14 +01:00