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mtd: rawnand: get rid of the JEDEC parameter page in nand_chip

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The NAND chip parameter page is statically allocated within the
nand_chip structure, which reserves a lot of space. Even not ONFI nor
JEDEC chips have it embedded. Also, only a few parameters are actually
read from the parameter page after the detection.

Now that there is a small nand_parameters structure that can held
generic parameters, remove the JEDEC page from the nand_chip structure
by just allocating it during the identification phase and removing it
right after.

Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
This commit is contained in:
Miquel Raynal
2018-03-19 14:47:30 +01:00
committed by Boris Brezillon
parent 34c5c01e0c
commit 480139d922
2 changed files with 29 additions and 29 deletions
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17
include/linux/mtd/rawnand.h
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@@ -1200,12 +1200,8 @@ int nand_op_parser_exec_op(struct nand_chip *chip,
* currently in data_buf.
* @subpagesize: [INTERN] holds the subpagesize
* @id: [INTERN] holds NAND ID
* @jedec_version: [INTERN] holds the chip JEDEC version (BCD encoded),
* non 0 if JEDEC supported.
* @onfi_params: [INTERN] holds the ONFI page parameter when ONFI is
* supported, 0 otherwise.
* @jedec_params: [INTERN] holds the JEDEC parameter page when JEDEC is
* supported, 0 otherwise.
* @parameters: [INTERN] holds generic parameters under an easily
* readable form.
* @max_bb_per_die: [INTERN] the max number of bad blocks each die of a
@@ -1286,11 +1282,7 @@ struct nand_chip {
int badblockbits;
struct nand_id id;
int jedec_version;
union {
struct nand_onfi_params onfi_params;
struct nand_jedec_params jedec_params;
};
struct nand_onfi_params onfi_params;
struct nand_parameters parameters;
u16 max_bb_per_die;
u32 blocks_per_die;
@@ -1621,13 +1613,6 @@ static inline int nand_opcode_8bits(unsigned int command)
return 0;
}
/* return the supported JEDEC features. */
static inline int jedec_feature(struct nand_chip *chip)
{
return chip->jedec_version ? le16_to_cpu(chip->jedec_params.features)
: 0;
}
/* get timing characteristics from ONFI timing mode. */
const struct nand_sdr_timings *onfi_async_timing_mode_to_sdr_timings(int mode);