Add an instance of an anonymous struct to store the ECC infor for full id
nand chips.
@ecc.strength_ds: ECC correctability from the datasheet.
@ecc.step_ds: ECC size required by the @ecc.strength_ds,
These two fields are all from the datasheet.
Also add the necessary macros to make the code simple and clean.
Signed-off-by: Huang Shijie <b32...@freescale.com>
---
include/linux/mtd/nand.h | 15 +++++++++++++++
1 files changed, 15 insertions(+), 0 deletions(-)
diff --git a/include/linux/mtd/nand.h b/include/linux/mtd/nand.h
index 9574e0a..217cdfe 100644
--- a/include/linux/mtd/nand.h
+++ b/include/linux/mtd/nand.h
@@ -625,6 +625,11 @@ struct nand_chip {
{ .name = (nm), {{ .dev_id = (devid) }}, .chipsize = (chipsz), \
.options = (opts) }
+#define NAND_ECC_INFO(_strength, _step) \
+ { .strength_ds = (_strength), .step_ds = (_step) }
+#define NAND_ECC_STRENGTH(type) ((type)->ecc.strength_ds)
+#define NAND_ECC_STEP(type) ((type)->ecc.step_ds)
+
/**
* struct nand_flash_dev - NAND Flash Device ID Structure
* @name: a human-readable name of the NAND chip
@@ -642,6 +647,12 @@ struct nand_chip {
* @options: stores various chip bit options
* @id_len: The valid length of the @id.
* @oobsize: OOB size
+ * @ecc.strength_ds: The ECC correctability from the datasheet, same as the
+ * @ecc_strength_ds in nand_chip{}.
+ * @ecc.step_ds: The ECC step required by the @ecc.strength_ds, same as the
+ * @ecc_step_ds in nand_chip{}, also from the datasheet.
+ * For example, the "4bit ECC for each 512Byte" can be set with
+ * NAND_ECC_INFO(4, 512).
*/
struct nand_flash_dev {
char *name;
@@ -658,6 +669,10 @@ struct nand_flash_dev {
unsigned int options;
uint16_t id_len;
uint16_t oobsize;
+ struct {
+ uint16_t strength_ds;
+ uint16_t step_ds;
+ } ecc;
};
/**
--
1.7.1
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majord...@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
