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mtd: rawnand: Expose monolithic read/write_page_raw() helpers

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The current nand_read/write_page_raw() helpers are already widely used
but do not fit the purpose of "constrained" controllers which cannot,
for instance, separate command/address cycles with data cycles.

Workaround this issue by proposing alternative helpers that can be
used by these controller drivers instead.

Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com>
Link: https://lore.kernel.org/linux-mtd/20200507105241.14299-12-miquel.raynal@bootlin.com
This commit is contained in:
Miquel Raynal
2020-05-07 12:52:39 +02:00
parent daca31765e
commit 658beb6639
2 changed files with 83 additions and 2 deletions
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8
include/linux/mtd/rawnand.h
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@@ -1328,13 +1328,17 @@ int nand_read_oob_std(struct nand_chip *chip, int page);
int nand_get_set_features_notsupp(struct nand_chip *chip, int addr,
u8 *subfeature_param);
/* Default read_page_raw implementation */
/* read_page_raw implementations */
int nand_read_page_raw(struct nand_chip *chip, uint8_t *buf, int oob_required,
int page);
int nand_monolithic_read_page_raw(struct nand_chip *chip, uint8_t *buf,
int oob_required, int page);
/* Default write_page_raw implementation */
/* write_page_raw implementations */
int nand_write_page_raw(struct nand_chip *chip, const uint8_t *buf,
int oob_required, int page);
int nand_monolithic_write_page_raw(struct nand_chip *chip, const uint8_t *buf,
int oob_required, int page);
/* Reset and initialize a NAND device */
int nand_reset(struct nand_chip *chip, int chipnr);