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authorHuang Shijie <b32955@freescale.com>2013-09-25 14:58:10 +0800
committerBrian Norris <computersforpeace@gmail.com>2013-10-27 16:27:04 -0700
commit1d0ed69ddd714b6e2a974f42896463366923ded6 (patch)
tree958946ae1a2823cea55b6a1a4d4e4417faa6896b /include
parent4ae7d228d6048d25a16bee209ebea24c5ecde825 (diff)
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mtd: nand: add a helper to check the SLC/MLC nand chip
Add a helper to check if a nand chip is SLC or MLC. This helper makes the code more readable. Signed-off-by: Huang Shijie <b32955@freescale.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Diffstat (limited to 'include')
-rw-r--r--include/linux/mtd/nand.h9
1 files changed, 9 insertions, 0 deletions
diff --git a/include/linux/mtd/nand.h b/include/linux/mtd/nand.h
index 129548169400..5c05bab0ad89 100644
--- a/include/linux/mtd/nand.h
+++ b/include/linux/mtd/nand.h
@@ -795,4 +795,13 @@ static inline int onfi_get_sync_timing_mode(struct nand_chip *chip)
return le16_to_cpu(chip->onfi_params.src_sync_timing_mode);
}
+/*
+ * Check if it is a SLC nand.
+ * The !nand_is_slc() can be used to check the MLC/TLC nand chips.
+ * We do not distinguish the MLC and TLC now.
+ */
+static inline bool nand_is_slc(struct nand_chip *chip)
+{
+ return !(chip->cellinfo & NAND_CI_CELLTYPE_MSK);
+}
#endif /* __LINUX_MTD_NAND_H */