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mtd: nand: Add manufacturer specific initialization/detection steps

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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 <michael@amarulasolutions.com>
Signed-off-by: Dario Binacchi <dario.binacchi@amarulasolutions.com>
This commit is contained in:
Michael Trimarchi
2022-07-20 18:22:06 +02:00
parent bd87603d5a
commit b8cd2df519
2 changed files with 105 additions and 23 deletions
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30
include/linux/mtd/rawnand.h
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@@ -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[];