From b8cd2df5198c11360d514cd8529da992848d83b3 Mon Sep 17 00:00:00 2001 From: Michael Trimarchi Date: Wed, 20 Jul 2022 18:22:06 +0200 Subject: mtd: nand: Add manufacturer specific initialization/detection steps Upstream linux commit abbe26d144ec22. A lot of NANDs are implementing generic features in a non-generic way, or are providing advanced auto-detection logic where the NAND ID bytes meaning changes with the NAND generation. Providing this vendor specific initialization step will allow us to get rid of full-id entries in the nand_ids table or all the vendor specific cases added over the time in the generic NAND ID decoding logic. Signed-off-by: Michael Trimarchi Signed-off-by: Dario Binacchi --- include/linux/mtd/rawnand.h | 30 ++++++++++++++++++++++++++++++ 1 file changed, 30 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mtd/rawnand.h b/include/linux/mtd/rawnand.h index f2c6a978cbf..57fe7fb47bd 100644 --- a/include/linux/mtd/rawnand.h +++ b/include/linux/mtd/rawnand.h @@ -796,6 +796,17 @@ nand_get_sdr_timings(const struct nand_data_interface *conf) return &conf->timings.sdr; } +/** + * struct nand_manufacturer_ops - NAND Manufacturer operations + * @detect: detect the NAND memory organization and capabilities + * @init: initialize all vendor specific fields (like the ->read_retry() + * implementation) if any. + */ +struct nand_manufacturer_ops { + void (*detect)(struct nand_chip *chip); + int (*init)(struct nand_chip *chip); +}; + /** * struct nand_chip - NAND Private Flash Chip Data * @mtd: MTD device registered to the MTD framework @@ -897,6 +908,7 @@ nand_get_sdr_timings(const struct nand_data_interface *conf) * devices. * @priv: [OPTIONAL] pointer to private chip data * @write_page: [REPLACEABLE] High-level page write function + * @manufacturer: [INTERN] Contains manufacturer information */ struct nand_chip { @@ -983,6 +995,11 @@ struct nand_chip { struct nand_bbt_descr *badblock_pattern; void *priv; + + struct { + const struct nand_manufacturers *desc; + void *priv; + } manufacturer; }; static inline void nand_set_flash_node(struct nand_chip *chip, @@ -1016,6 +1033,17 @@ static inline void nand_set_controller_data(struct nand_chip *chip, void *priv) chip->priv = priv; } +static inline void nand_set_manufacturer_data(struct nand_chip *chip, + void *priv) +{ + chip->manufacturer.priv = priv; +} + +static inline void *nand_get_manufacturer_data(struct nand_chip *chip) +{ + return chip->manufacturer.priv; +} + /* * NAND Flash Manufacturer ID Codes */ @@ -1120,10 +1148,12 @@ struct nand_flash_dev { * struct nand_manufacturers - NAND Flash Manufacturer ID Structure * @name: Manufacturer name * @id: manufacturer ID code of device. + * @ops: manufacturer operations */ struct nand_manufacturers { int id; char *name; + const struct nand_manufacturer_ops *ops; }; extern struct nand_flash_dev nand_flash_ids[]; -- cgit v1.2.3