MTD: OneNAND: interrupt based wait support

  We can use the two methods to wait.
  1. polling: read interrupt status register
  2. interrupt: use kernel ineterrupt mechanism

  To use interrupt method, you first connect onenand interrupt pin to your
platform and configure interrupt properly

Signed-off-by: Kyungmin Park <kyungmin.park at samsung.com>

1 files changed, 4 insertions, 0 deletions

diff --git a/include/linux/mtd/onenand.h b/include/linux/mtd/onenand.h
index 6f045b586e7..df963f1f6f8 100644
--- a/include/linux/mtd/onenand.h
+++ b/include/linux/mtd/onenand.h
@@ -13,6 +13,7 @@
 #define __LINUX_MTD_ONENAND_H
 
 #include <linux/spinlock.h>
+#include <linux/completion.h>
 #include <linux/mtd/onenand_regs.h>
 #include <linux/mtd/bbm.h>
 
@@ -120,6 +121,9 @@ struct onenand_chip {
         int (*block_markbad)(struct mtd_info *mtd, loff_t ofs);
         int (*scan_bbt)(struct mtd_info *mtd);
 
+        struct completion       complete;
+        int                     irq;
+
         spinlock_t              chip_lock;
         wait_queue_head_t       wq;
         onenand_state_t         state;