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-rw-r--r--include/linux/mtd/nand.h19
1 files changed, 19 insertions, 0 deletions
diff --git a/include/linux/mtd/nand.h b/include/linux/mtd/nand.h
index 0546565..991bd8e 100644
--- a/include/linux/mtd/nand.h
+++ b/include/linux/mtd/nand.h
@@ -719,4 +719,23 @@ static inline int onfi_get_sync_timing_mode(struct nand_chip *chip)
}
#endif
+/**
+ * Check if the opcode's address should be sent only on the lower 8 bits
+ * @command: opcode to check
+ */
+static inline int nand_opcode_8bits(unsigned int command)
+{
+ switch (command) {
+ case NAND_CMD_READID:
+ case NAND_CMD_PARAM:
+ case NAND_CMD_GET_FEATURES:
+ case NAND_CMD_SET_FEATURES:
+ return 1;
+ default:
+ break;
+ }
+ return 0;
+}
+
+
#endif /* __LINUX_MTD_NAND_H */