From: Mason Yang <masonccyang@mxic.com.tw>
To: miquel.raynal@bootlin.com, richard@nod.at, marek.vasut@gmail.com,
dwmw2@infradead.org, bbrezillon@kernel.org,
computersforpeace@gmail.com, vigneshr@ti.com
Cc: juliensu@mxic.com.tw, masonccyang@mxic.com.tw,
linux-mtd@lists.infradead.org, linux-kernel@vger.kernel.org
Subject: [PATCH v2 1/4] mtd: rawnand: Add support manufacturer specific lock/unlock operatoin
Date: Mon, 28 Oct 2019 17:55:24 +0800 [thread overview]
Message-ID: <1572256527-5074-2-git-send-email-masonccyang@mxic.com.tw> (raw)
In-Reply-To: <1572256527-5074-1-git-send-email-masonccyang@mxic.com.tw>
Add nand_lock() & nand_unlock() for manufacturer specific lock & unlock
operation while the device supports Block Protection function.
Signed-off-by: Mason Yang <masonccyang@mxic.com.tw>
---
drivers/mtd/nand/raw/nand_base.c | 32 ++++++++++++++++++++++++++++++--
include/linux/mtd/rawnand.h | 3 +++
2 files changed, 33 insertions(+), 2 deletions(-)
diff --git a/drivers/mtd/nand/raw/nand_base.c b/drivers/mtd/nand/raw/nand_base.c
index 5c2c30a..5e318ff 100644
--- a/drivers/mtd/nand/raw/nand_base.c
+++ b/drivers/mtd/nand/raw/nand_base.c
@@ -4356,6 +4356,34 @@ static void nand_shutdown(struct mtd_info *mtd)
nand_suspend(mtd);
}
+/**
+ * nand_lock - [MTD Interface] Lock the NAND flash
+ * @mtd: MTD device structure
+ */
+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)
+ return -ENOTSUPP;
+
+ return chip->_lock(chip, ofs, len);
+}
+
+/**
+ * nand_unlock - [MTD Interface] Unlock the NAND flash
+ * @mtd: MTD device structure
+ */
+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)
+ return -ENOTSUPP;
+
+ return chip->_unlock(chip, ofs, len);
+}
+
/* Set default functions */
static void nand_set_defaults(struct nand_chip *chip)
{
@@ -5782,8 +5810,8 @@ 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..2430ecd 100644
--- a/include/linux/mtd/rawnand.h
+++ b/include/linux/mtd/rawnand.h
@@ -1136,6 +1136,9 @@ struct nand_chip {
const struct nand_manufacturer *desc;
void *priv;
} manufacturer;
+
+ int (*_lock)(struct nand_chip *chip, loff_t ofs, uint64_t len);
+ int (*_unlock)(struct nand_chip *chip, loff_t ofs, uint64_t len);
};
extern const struct mtd_ooblayout_ops nand_ooblayout_sp_ops;
--
1.9.1
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http://lists.infradead.org/mailman/listinfo/linux-mtd/
next prev parent reply other threads:[~2019-10-28 9:31 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-10-28 9:55 [PATCH v2 0/4] mtd: rawnand: Add support Macronix Block Protection & deep power down mode Mason Yang
2019-10-28 9:55 ` Mason Yang [this message]
2019-10-30 3:22 ` [PATCH v2 1/4] mtd: rawnand: Add support manufacturer specific lock/unlock operatoin kbuild test robot
2020-01-09 16:41 ` Miquel Raynal
2020-02-17 8:05 ` masonccyang
2020-01-09 19:30 ` Boris Brezillon
2020-02-17 8:14 ` masonccyang
2020-02-17 9:01 ` Miquel Raynal
2020-02-17 9:22 ` Boris Brezillon
2020-02-18 3:13 ` masonccyang
2019-10-28 9:55 ` [PATCH v2 2/4] mtd: rawnand: Add support Macronix Block Protection function Mason Yang
2020-01-09 16:47 ` Miquel Raynal
2020-02-17 8:24 ` masonccyang
2019-10-28 9:55 ` [PATCH v2 3/4] mtd: rawnand: Add support manufacturer specific suspend/resume operation Mason Yang
2019-10-30 5:56 ` kbuild test robot
2020-01-09 16:53 ` Miquel Raynal
2019-10-28 9:55 ` [PATCH v2 4/4] mtd: rawnand: Add support Macronix deep power down mode Mason Yang
2019-10-31 7:36 ` kbuild test robot
2019-10-31 7:36 ` [RFC PATCH] mtd: rawnand: nand_power_down_op() can be static kbuild test robot
2020-01-09 17:01 ` [PATCH v2 4/4] mtd: rawnand: Add support Macronix deep power down mode Miquel Raynal
2020-02-21 2:44 ` masonccyang
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