From: Mason Yang <masonccyang@mxic.com.tw>
To: miquel.raynal@bootlin.com, richard@nod.at, vigneshr@ti.com
Cc: frieder.schrempf@kontron.de, tglx@linutronix.de, stefan@agner.ch,
juliensu@mxic.com.tw, allison@lohutok.net,
linux-kernel@vger.kernel.org, bbrezillon@kernel.org,
rfontana@redhat.com, linux-mtd@lists.infradead.org,
yuehaibing@huawei.com, s.hauer@pengutronix.de,
Mason Yang <masonccyang@mxic.com.tw>
Subject: [PATCH v3 1/4] mtd: rawnand: Add support manufacturer specific lock/unlock operation
Date: Tue, 3 Mar 2020 15:21:21 +0800 [thread overview]
Message-ID: <1583220084-10890-2-git-send-email-masonccyang@mxic.com.tw> (raw)
In-Reply-To: <1583220084-10890-1-git-send-email-masonccyang@mxic.com.tw>
Add nand_lock() & nand_unlock() for manufacturer specific lock & unlock
operation while the device supports Block Portection function.
Signed-off-by: Mason Yang <masonccyang@mxic.com.tw>
Reported-by: kbuild test robot <lkp@intel.com>
Reviewed-by: Miquel Raynal <miquel.raynal@bootlin.com>
---
drivers/mtd/nand/raw/nand_base.c | 36 ++++++++++++++++++++++++++++++++++--
include/linux/mtd/rawnand.h | 5 +++++
2 files changed, 39 insertions(+), 2 deletions(-)
diff --git a/drivers/mtd/nand/raw/nand_base.c b/drivers/mtd/nand/raw/nand_base.c
index f64e3b6..769be81 100644
--- a/drivers/mtd/nand/raw/nand_base.c
+++ b/drivers/mtd/nand/raw/nand_base.c
@@ -4360,6 +4360,38 @@ static void nand_shutdown(struct mtd_info *mtd)
nand_suspend(mtd);
}
+/**
+ * nand_lock - [MTD Interface] Lock the NAND flash
+ * @mtd: MTD device structure
+ * @ofs: offset byte address
+ * @len: number of bytes to lock (must be a multiple of block/page size)
+ */
+static int nand_lock(struct mtd_info *mtd, loff_t ofs, uint64_t len)
+{
+ struct nand_chip *chip = mtd_to_nand(mtd);
+
+ if (!chip->lock_area)
+ return -ENOTSUPP;
+
+ return chip->lock_area(chip, ofs, len);
+}
+
+/**
+ * nand_unlock - [MTD Interface] Unlock the NAND flash
+ * @mtd: MTD device structure
+ * @ofs: offset byte address
+ * @len: number of bytes to unlock (must be a multiple of block/page size)
+ */
+static int nand_unlock(struct mtd_info *mtd, loff_t ofs, uint64_t len)
+{
+ struct nand_chip *chip = mtd_to_nand(mtd);
+
+ if (!chip->unlock_area)
+ return -ENOTSUPP;
+
+ return chip->unlock_area(chip, ofs, len);
+}
+
/* Set default functions */
static void nand_set_defaults(struct nand_chip *chip)
{
@@ -5786,8 +5818,8 @@ static int nand_scan_tail(struct nand_chip *chip)
mtd->_read_oob = nand_read_oob;
mtd->_write_oob = nand_write_oob;
mtd->_sync = nand_sync;
- mtd->_lock = NULL;
- mtd->_unlock = NULL;
+ mtd->_lock = nand_lock;
+ mtd->_unlock = nand_unlock;
mtd->_suspend = nand_suspend;
mtd->_resume = nand_resume;
mtd->_reboot = nand_shutdown;
diff --git a/include/linux/mtd/rawnand.h b/include/linux/mtd/rawnand.h
index 4ab9bcc..bc2fa3c 100644
--- a/include/linux/mtd/rawnand.h
+++ b/include/linux/mtd/rawnand.h
@@ -1077,6 +1077,8 @@ struct nand_legacy {
* @manufacturer: [INTERN] Contains manufacturer information
* @manufacturer.desc: [INTERN] Contains manufacturer's description
* @manufacturer.priv: [INTERN] Contains manufacturer private information
+ * @lock_area: [REPLACEABLE] specific NAND chip lock operation
+ * @unlock_area: [REPLACEABLE] specific NAND chip unlock operation
*/
struct nand_chip {
@@ -1136,6 +1138,9 @@ struct nand_chip {
const struct nand_manufacturer *desc;
void *priv;
} manufacturer;
+
+ int (*lock_area)(struct nand_chip *chip, loff_t ofs, uint64_t len);
+ int (*unlock_area)(struct nand_chip *chip, loff_t ofs, uint64_t len);
};
extern const struct mtd_ooblayout_ops nand_ooblayout_sp_ops;
--
1.9.1
next prev parent reply other threads:[~2020-03-03 7:21 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-03-03 7:21 [PATCH v3 0/4] mtd: rawnand: Add support Macronix Block Portection & Deep Power Down mode Mason Yang
2020-03-03 7:21 ` Mason Yang [this message]
2020-03-10 18:30 ` [PATCH v3 1/4] mtd: rawnand: Add support manufacturer specific lock/unlock operation Miquel Raynal
2020-03-10 19:27 ` Boris Brezillon
2020-03-11 2:40 ` masonccyang
2020-03-11 7:25 ` Miquel Raynal
2020-03-03 7:21 ` [PATCH v3 2/4] mtd: rawnand: Add support Macronix Block Protection function Mason Yang
2020-03-03 7:21 ` [PATCH v3 3/4] mtd: rawnand: Add support manufacturer specific suspend/resume operation Mason Yang
2020-03-10 18:30 ` Miquel Raynal
2020-03-10 19:33 ` Boris Brezillon
2020-03-11 5:40 ` masonccyang
2020-03-11 7:43 ` Miquel Raynal
2020-03-11 7:56 ` Boris Brezillon
2020-03-12 1:45 ` masonccyang
2020-03-10 19:39 ` Boris Brezillon
2020-03-10 19:41 ` Boris Brezillon
2020-03-11 6:13 ` masonccyang
2020-03-11 8:01 ` Boris Brezillon
2020-03-12 1:48 ` masonccyang
2020-03-03 7:21 ` [PATCH v3 4/4] mtd: rawnand: Add support Macronix deep power down mode Mason Yang
2020-03-09 13:14 ` [PATCH v3 0/4] mtd: rawnand: Add support Macronix Block Portection & Deep Power Down mode Miquel Raynal
2020-03-10 2:30 ` masonccyang
2020-03-10 7:44 ` Miquel Raynal
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