[PATCH 01/15] mtd: nand: get rid of the mtd parameter in all auto-detection functions
Boris Brezillon
boris.brezillon at free-electrons.com
Fri May 27 05:54:47 PDT 2016
Now that struct nand_chip embeds an mtd_info object we can get rid of the
mtd parameter and extract it from the chip parameter with the nand_to_mtd()
helper.
Signed-off-by: Boris Brezillon <boris.brezillon at free-electrons.com>
---
drivers/mtd/nand/nand_base.c | 56 ++++++++++++++++++++++++--------------------
1 file changed, 30 insertions(+), 26 deletions(-)
diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c
index 7bc37b4..c0d8c43 100644
--- a/drivers/mtd/nand/nand_base.c
+++ b/drivers/mtd/nand/nand_base.c
@@ -3228,9 +3228,10 @@ static u16 onfi_crc16(u16 crc, u8 const *p, size_t len)
}
/* Parse the Extended Parameter Page. */
-static int nand_flash_detect_ext_param_page(struct mtd_info *mtd,
- struct nand_chip *chip, struct nand_onfi_params *p)
+static int nand_flash_detect_ext_param_page(struct nand_chip *chip,
+ struct nand_onfi_params *p)
{
+ struct mtd_info *mtd = nand_to_mtd(chip);
struct onfi_ext_param_page *ep;
struct onfi_ext_section *s;
struct onfi_ext_ecc_info *ecc;
@@ -3325,9 +3326,9 @@ static void nand_onfi_detect_micron(struct nand_chip *chip,
/*
* Check if the NAND chip is ONFI compliant, returns 1 if it is, 0 otherwise.
*/
-static int nand_flash_detect_onfi(struct mtd_info *mtd, struct nand_chip *chip,
- int *busw)
+static int nand_flash_detect_onfi(struct nand_chip *chip, int *busw)
{
+ struct mtd_info *mtd = nand_to_mtd(chip);
struct nand_onfi_params *p = &chip->onfi_params;
int i, j;
int val;
@@ -3414,7 +3415,7 @@ static int nand_flash_detect_onfi(struct mtd_info *mtd, struct nand_chip *chip,
chip->cmdfunc = nand_command_lp;
/* The Extended Parameter Page is supported since ONFI 2.1. */
- if (nand_flash_detect_ext_param_page(mtd, chip, p))
+ if (nand_flash_detect_ext_param_page(chip, p))
pr_warn("Failed to detect ONFI extended param page\n");
} else {
pr_warn("Could not retrieve ONFI ECC requirements\n");
@@ -3429,9 +3430,9 @@ static int nand_flash_detect_onfi(struct mtd_info *mtd, struct nand_chip *chip,
/*
* Check if the NAND chip is JEDEC compliant, returns 1 if it is, 0 otherwise.
*/
-static int nand_flash_detect_jedec(struct mtd_info *mtd, struct nand_chip *chip,
- int *busw)
+static int nand_flash_detect_jedec(struct nand_chip *chip, int *busw)
{
+ struct mtd_info *mtd = nand_to_mtd(chip);
struct nand_jedec_params *p = &chip->jedec_params;
struct jedec_ecc_info *ecc;
int val;
@@ -3581,9 +3582,10 @@ static int nand_get_bits_per_cell(u8 cellinfo)
* chip. The rest of the parameters must be decoded according to generic or
* manufacturer-specific "extended ID" decoding patterns.
*/
-static void nand_decode_ext_id(struct mtd_info *mtd, struct nand_chip *chip,
- u8 id_data[8], int *busw)
+static void nand_decode_ext_id(struct nand_chip *chip, u8 id_data[8],
+ int *busw)
{
+ struct mtd_info *mtd = nand_to_mtd(chip);
int extid, id_len;
/* The 3rd id byte holds MLC / multichip data */
chip->bits_per_cell = nand_get_bits_per_cell(id_data[2]);
@@ -3714,10 +3716,10 @@ static void nand_decode_ext_id(struct mtd_info *mtd, struct nand_chip *chip,
* decodes a matching ID table entry and assigns the MTD size parameters for
* the chip.
*/
-static void nand_decode_id(struct mtd_info *mtd, struct nand_chip *chip,
- struct nand_flash_dev *type, u8 id_data[8],
- int *busw)
+static void nand_decode_id(struct nand_chip *chip, struct nand_flash_dev *type,
+ u8 id_data[8], int *busw)
{
+ struct mtd_info *mtd = nand_to_mtd(chip);
int maf_id = id_data[0];
mtd->erasesize = type->erasesize;
@@ -3747,9 +3749,9 @@ static void nand_decode_id(struct mtd_info *mtd, struct nand_chip *chip,
* heuristic patterns using various detected parameters (e.g., manufacturer,
* page size, cell-type information).
*/
-static void nand_decode_bbm_options(struct mtd_info *mtd,
- struct nand_chip *chip, u8 id_data[8])
+static void nand_decode_bbm_options(struct nand_chip *chip, u8 id_data[8])
{
+ struct mtd_info *mtd = nand_to_mtd(chip);
int maf_id = id_data[0];
/* Set the bad block position */
@@ -3784,9 +3786,12 @@ static inline bool is_full_id_nand(struct nand_flash_dev *type)
return type->id_len;
}
-static bool find_full_id_nand(struct mtd_info *mtd, struct nand_chip *chip,
- struct nand_flash_dev *type, u8 *id_data, int *busw)
+static bool find_full_id_nand(struct nand_chip *chip,
+ struct nand_flash_dev *type, u8 *id_data,
+ int *busw)
{
+ struct mtd_info *mtd = nand_to_mtd(chip);
+
if (!strncmp(type->id, id_data, type->id_len)) {
mtd->writesize = type->pagesize;
mtd->erasesize = type->erasesize;
@@ -3813,11 +3818,11 @@ static bool find_full_id_nand(struct mtd_info *mtd, struct nand_chip *chip,
/*
* Get the flash and manufacturer id and lookup if the type is supported.
*/
-static struct nand_flash_dev *nand_get_flash_type(struct mtd_info *mtd,
- struct nand_chip *chip,
+static struct nand_flash_dev *nand_get_flash_type(struct nand_chip *chip,
int *maf_id, int *dev_id,
struct nand_flash_dev *type)
{
+ struct mtd_info *mtd = nand_to_mtd(chip);
int busw;
int i, maf_idx;
u8 id_data[8];
@@ -3862,7 +3867,7 @@ static struct nand_flash_dev *nand_get_flash_type(struct mtd_info *mtd,
for (; type->name != NULL; type++) {
if (is_full_id_nand(type)) {
- if (find_full_id_nand(mtd, chip, type, id_data, &busw))
+ if (find_full_id_nand(chip, type, id_data, &busw))
goto ident_done;
} else if (*dev_id == type->dev_id) {
break;
@@ -3872,11 +3877,11 @@ static struct nand_flash_dev *nand_get_flash_type(struct mtd_info *mtd,
chip->onfi_version = 0;
if (!type->name || !type->pagesize) {
/* Check if the chip is ONFI compliant */
- if (nand_flash_detect_onfi(mtd, chip, &busw))
+ if (nand_flash_detect_onfi(chip, &busw))
goto ident_done;
/* Check if the chip is JEDEC compliant */
- if (nand_flash_detect_jedec(mtd, chip, &busw))
+ if (nand_flash_detect_jedec(chip, &busw))
goto ident_done;
}
@@ -3890,9 +3895,9 @@ static struct nand_flash_dev *nand_get_flash_type(struct mtd_info *mtd,
if (!type->pagesize) {
/* Decode parameters from extended ID */
- nand_decode_ext_id(mtd, chip, id_data, &busw);
+ nand_decode_ext_id(chip, id_data, &busw);
} else {
- nand_decode_id(mtd, chip, type, id_data, &busw);
+ nand_decode_id(chip, type, id_data, &busw);
}
/* Get chip options */
chip->options |= type->options;
@@ -3929,7 +3934,7 @@ ident_done:
return ERR_PTR(-EINVAL);
}
- nand_decode_bbm_options(mtd, chip, id_data);
+ nand_decode_bbm_options(chip, id_data);
/* Calculate the address shift from the page size */
chip->page_shift = ffs(mtd->writesize) - 1;
@@ -4140,8 +4145,7 @@ int nand_scan_ident(struct mtd_info *mtd, int maxchips,
nand_set_defaults(chip, chip->options & NAND_BUSWIDTH_16);
/* Read the flash type */
- type = nand_get_flash_type(mtd, chip, &nand_maf_id,
- &nand_dev_id, table);
+ type = nand_get_flash_type(chip, &nand_maf_id, &nand_dev_id, table);
if (IS_ERR(type)) {
if (!(chip->options & NAND_SCAN_SILENT_NODEV))
--
2.7.4
More information about the linux-mtd
mailing list