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mtd: add the support to parse out the full-id nand type
When we meet a full-id nand type whose @id_len is not zero, we can use the find_full_id_nand() to parse out the necessary information for a nand chip. If we meet a non full-id nand type, we can handle it in the legacy way. Signed-off-by: Huang Shijie <b32955@freescale.com> Reviewed-by: Brian Norris <computersforpeace@gmail.com> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
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parent
f22d5f638b
commit
ec6e87e378
1 changed files with 32 additions and 3 deletions
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@ -3087,6 +3087,30 @@ static void nand_decode_bbm_options(struct mtd_info *mtd,
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chip->bbt_options |= NAND_BBT_SCAN2NDPAGE;
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}
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static inline bool is_full_id_nand(struct nand_flash_dev *type)
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{
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return type->id_len;
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}
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static bool find_full_id_nand(struct mtd_info *mtd, struct nand_chip *chip,
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struct nand_flash_dev *type, u8 *id_data, int *busw)
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{
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if (!strncmp(type->id, id_data, type->id_len)) {
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mtd->writesize = type->pagesize;
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mtd->erasesize = type->erasesize;
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mtd->oobsize = type->oobsize;
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chip->cellinfo = id_data[2];
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chip->chipsize = (uint64_t)type->chipsize << 20;
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chip->options |= type->options;
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*busw = type->options & NAND_BUSWIDTH_16;
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return true;
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}
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return false;
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}
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/*
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* Get the flash and manufacturer id and lookup if the type is supported.
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*/
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@ -3138,9 +3162,14 @@ static struct nand_flash_dev *nand_get_flash_type(struct mtd_info *mtd,
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if (!type)
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type = nand_flash_ids;
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for (; type->name != NULL; type++)
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if (*dev_id == type->dev_id)
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break;
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for (; type->name != NULL; type++) {
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if (is_full_id_nand(type)) {
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if (find_full_id_nand(mtd, chip, type, id_data, &busw))
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goto ident_done;
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} else if (*dev_id == type->dev_id) {
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break;
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}
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}
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chip->onfi_version = 0;
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if (!type->name || !type->pagesize) {
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