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Two helpers have been added to the core to do all kind of controller
side configuration/initialization between the detection phase and the
final NAND scan. Implement these hooks so that we can convert the driver
to just use nand_scan() instead of the nand_scan_ident() +
nand_scan_tail() pair.
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Reviewed-by: Boris Brezillon <boris.brezillon@bootlin.com>
Reviewed-by: Stefan Agner <stefan@agner.ch>
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git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux into mtd/next
Backmerge v4.16-rc2 into mtd/next to resolve a conflict between Linus'
master branch and nand/for-4.17.
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With the move to ->exec_op() the driver should now support ONFI
SET/GET_FEATURES commands.
Signed-off-by: Stefan Agner <stefan@agner.ch>
Reviewed-by: Miquel Raynal <miquel.raynal@bootlin.com>
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
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Now that the driver is using ->exec_op(), remove the old
hooks.
Signed-off-by: Stefan Agner <stefan@agner.ch>
Reviewed-by: Miquel Raynal <miquel.raynal@bootlin.com>
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
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This reworks the driver to make use of ->exec_op() callback. The
command sequencer of the VF610 NFC aligns well with the new ops
interface.
The operations are translated to a NFC command code while filling
the necessary registers. Instead of using the special status and
read ID command codes (which require to read status/ID from
special registers instead of the regular data area) the driver
now now uses the main data buffer for all commands. This
simplifies the driver as no special casing is needed.
For control data (status byte, id bytes and parameter page) the
driver needs to reverse byte order for little endian CPUs since
the controller seems to store the bytes in big endian order in
the data buffer.
The current state seems to pass MTD tests on a Colibri VF61.
Signed-off-by: Stefan Agner <stefan@agner.ch>
Reviewed-by: Miquel Raynal <miquel.raynal@bootlin.com>
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
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As part of the process of sharing more code between different NAND
based devices, we need to move all raw NAND related code to the raw/
subdirectory.
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
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