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mtd: rawnand: Create a nand_chip operations structure

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And move nand_chip hooks there.

While moving entries from one structure to the other, adapt the
documentation style.

Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com>
Link: https://lore.kernel.org/linux-mtd/20200529111322.7184-4-miquel.raynal@bootlin.com
This commit is contained in:
Miquel Raynal
2020-05-29 13:12:57 +02:00
parent d1f3837a50
commit 8e8b2706e1
5 changed files with 35 additions and 31 deletions
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32
include/linux/mtd/rawnand.h
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@@ -1027,16 +1027,31 @@ struct nand_legacy {
struct nand_controller dummy_controller;
};
/**
* struct nand_chip_ops - NAND chip operations
* @suspend: Suspend operation
* @resume: Resume operation
* @lock_area: Lock operation
* @unlock_area: Unlock operation
* @setup_read_retry: Set the read-retry mode (mostly needed for MLC NANDs)
*/
struct nand_chip_ops {
int (*suspend)(struct nand_chip *chip);
void (*resume)(struct nand_chip *chip);
int (*lock_area)(struct nand_chip *chip, loff_t ofs, uint64_t len);
int (*unlock_area)(struct nand_chip *chip, loff_t ofs, uint64_t len);
int (*setup_read_retry)(struct nand_chip *chip, int retry_mode);
};
/**
* struct nand_chip - NAND Private Flash Chip Data
* @base: Inherit from the generic NAND device
* @ops: NAND chip operations
* @legacy: All legacy fields/hooks. If you develop a new driver,
* don't even try to use any of these fields/hooks, and if
* you're modifying an existing driver that is using those
* fields/hooks, you should consider reworking the driver
* avoid using them.
* @setup_read_retry: [FLASHSPECIFIC] flash (vendor) specific function for
* setting the read-retry mode. Mostly needed for MLC NAND.
* @ecc: [BOARDSPECIFIC] ECC control structure
* @buf_align: minimum buffer alignment required by a platform
* @oob_poi: "poison value buffer," used for laying out OOB data
@@ -1081,8 +1096,6 @@ struct nand_legacy {
* @lock: lock protecting the suspended field. Also used to
* serialize accesses to the NAND device.
* @suspended: set to 1 when the device is suspended, 0 when it's not.
* @suspend: [REPLACEABLE] specific NAND device suspend operation
* @resume: [REPLACEABLE] specific NAND device resume operation
* @bbt: [INTERN] bad block table pointer
* @bbt_td: [REPLACEABLE] bad block table descriptor for flash
* lookup.
@@ -1096,17 +1109,13 @@ struct nand_legacy {
* @manufacturer: [INTERN] Contains manufacturer information
* @manufacturer.desc: [INTERN] Contains manufacturer's description
* @manufacturer.priv: [INTERN] Contains manufacturer private information
* @lock_area: [REPLACEABLE] specific NAND chip lock operation
* @unlock_area: [REPLACEABLE] specific NAND chip unlock operation
*/
struct nand_chip {
struct nand_device base;
struct nand_chip_ops ops;
struct nand_legacy legacy;
int (*setup_read_retry)(struct nand_chip *chip, int retry_mode);
unsigned int options;
unsigned int bbt_options;
@@ -1138,8 +1147,6 @@ struct nand_chip {
struct mutex lock;
unsigned int suspended : 1;
int (*suspend)(struct nand_chip *chip);
void (*resume)(struct nand_chip *chip);
u8 *oob_poi;
struct nand_controller *controller;
@@ -1159,9 +1166,6 @@ struct nand_chip {
const struct nand_manufacturer *desc;
void *priv;
} manufacturer;
int (*lock_area)(struct nand_chip *chip, loff_t ofs, uint64_t len);
int (*unlock_area)(struct nand_chip *chip, loff_t ofs, uint64_t len);
};
extern const struct mtd_ooblayout_ops nand_ooblayout_sp_ops;