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Date: Tue, 03 Mar 2009 15:36:31 +0900
From: Kyungmin Park <kmpark@...radead.org>
To: linux-mtd@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: [PATCH 3/3] [MTD] [OneNAND] Add bbt_wait & unlock_all as replaceable
for some platform
Add bbt_wait & unlock_all as replaceable for some platform such as s3c64xx
s3c64xx has its own OneNAND controller and another interface
Signed-off-by: Kyungmin Park <kyungmin.park@...sung.com>
---
drivers/mtd/onenand/onenand_base.c | 12 ++++++++++--
include/linux/mtd/onenand.h | 5 +++++
2 files changed, 15 insertions(+), 2 deletions(-)
diff --git a/drivers/mtd/onenand/onenand_base.c b/drivers/mtd/onenand/onenand_base.c
index 7af863a..565599b 100644
--- a/drivers/mtd/onenand/onenand_base.c
+++ b/drivers/mtd/onenand/onenand_base.c
@@ -1511,7 +1511,7 @@ int onenand_bbt_read_oob(struct mtd_info *mtd, loff_t from,
onenand_update_bufferram(mtd, from, 0);
- ret = onenand_bbt_wait(mtd, FL_READING);
+ ret = this->bbt_wait(mtd, FL_READING);
if (unlikely(ret))
ret = onenand_recover_lsb(mtd, from, ret);
@@ -2532,6 +2532,10 @@ static void onenand_unlock_all(struct mtd_info *mtd)
& ONENAND_CTRL_ONGO)
continue;
+ /* Don't check lock status */
+ if (this->options & ONENAND_SKIP_UNLOCK_CHECK)
+ return;
+
/* Check lock status */
if (onenand_check_lock_status(this))
return;
@@ -3407,6 +3411,10 @@ int onenand_scan(struct mtd_info *mtd, int maxchips)
this->command = onenand_command;
if (!this->wait)
onenand_setup_wait(mtd);
+ if (!this->bbt_wait)
+ this->bbt_wait = onenand_bbt_wait;
+ if (!this->unlock_all)
+ this->unlock_all = onenand_unlock_all;
if (!this->read_bufferram)
this->read_bufferram = onenand_read_bufferram;
@@ -3524,7 +3532,7 @@ int onenand_scan(struct mtd_info *mtd, int maxchips)
mtd->owner = THIS_MODULE;
/* Unlock whole block */
- onenand_unlock_all(mtd);
+ this->unlock_all(mtd);
ret = this->scan_bbt(mtd);
if ((!FLEXONENAND(this)) || ret)
diff --git a/include/linux/mtd/onenand.h b/include/linux/mtd/onenand.h
index 1ce6c39..c3aed89 100644
--- a/include/linux/mtd/onenand.h
+++ b/include/linux/mtd/onenand.h
@@ -97,6 +97,8 @@ struct onenand_bufferram {
* @command: [REPLACEABLE] hardware specific function for writing
* commands to the chip
* @wait: [REPLACEABLE] hardware specific function for wait on ready
+ * @bbt_wait: [REPLACEABLE] hardware specific function for bbt wait on ready
+ * @unlock_all: [REPLACEABLE] hardware specific function for unlock all
* @read_bufferram: [REPLACEABLE] hardware specific function for BufferRAM Area
* @write_bufferram: [REPLACEABLE] hardware specific function for BufferRAM Area
* @read_word: [REPLACEABLE] hardware specific function for read
@@ -141,6 +143,8 @@ struct onenand_chip {
int (*command)(struct mtd_info *mtd, int cmd, loff_t address, size_t len);
int (*wait)(struct mtd_info *mtd, int state);
+ int (*bbt_wait)(struct mtd_info *mtd, int state);
+ void (*unlock_all)(struct mtd_info *mtd);
int (*read_bufferram)(struct mtd_info *mtd, int area,
unsigned char *buffer, int offset, size_t count);
int (*write_bufferram)(struct mtd_info *mtd, int area,
@@ -207,6 +211,7 @@ struct onenand_chip {
#define ONENAND_HAS_CONT_LOCK (0x0001)
#define ONENAND_HAS_UNLOCK_ALL (0x0002)
#define ONENAND_HAS_2PLANE (0x0004)
+#define ONENAND_SKIP_UNLOCK_CHECK (0x0100)
#define ONENAND_PAGEBUF_ALLOC (0x1000)
#define ONENAND_OOBBUF_ALLOC (0x2000)
--
1.5.3.3
--
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