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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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  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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