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 3/4] mtd: rawnand: Add support manufacturer specific suspend/resume operation
Date: Mon, 28 Oct 2019 17:55:26 +0800 [thread overview]
Message-ID: <1572256527-5074-4-git-send-email-masonccyang@mxic.com.tw> (raw)
In-Reply-To: <1572256527-5074-1-git-send-email-masonccyang@mxic.com.tw>
Patch nand_suspend() & nand_resume() for manufacturer specific
suspend/resume operation.
Signed-off-by: Mason Yang <masonccyang@mxic.com.tw>
---
drivers/mtd/nand/raw/nand_base.c | 9 +++++++--
include/linux/mtd/rawnand.h | 2 ++
2 files changed, 9 insertions(+), 2 deletions(-)
diff --git a/drivers/mtd/nand/raw/nand_base.c b/drivers/mtd/nand/raw/nand_base.c
index 5e318ff..2a9c5bb 100644
--- a/drivers/mtd/nand/raw/nand_base.c
+++ b/drivers/mtd/nand/raw/nand_base.c
@@ -4323,6 +4323,8 @@ static int nand_suspend(struct mtd_info *mtd)
struct nand_chip *chip = mtd_to_nand(mtd);
mutex_lock(&chip->lock);
+ if (chip->_suspend)
+ chip->_suspend(chip);
chip->suspended = 1;
mutex_unlock(&chip->lock);
@@ -4338,11 +4340,14 @@ static void nand_resume(struct mtd_info *mtd)
struct nand_chip *chip = mtd_to_nand(mtd);
mutex_lock(&chip->lock);
- if (chip->suspended)
+ if (chip->suspended) {
+ if (chip->_resume)
+ chip->_resume(chip);
chip->suspended = 0;
- else
+ } else {
pr_err("%s called for a chip which is not in suspended state\n",
__func__);
+ }
mutex_unlock(&chip->lock);
}
diff --git a/include/linux/mtd/rawnand.h b/include/linux/mtd/rawnand.h
index 2430ecd..6b14041 100644
--- a/include/linux/mtd/rawnand.h
+++ b/include/linux/mtd/rawnand.h
@@ -1117,6 +1117,8 @@ struct nand_chip {
struct mutex lock;
unsigned int suspended : 1;
+ int (*_suspend)(struct nand_chip *chip);
+ void (*_resume)(struct nand_chip *chip);
uint8_t *oob_poi;
struct nand_controller *controller;
--
1.9.1
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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 ` [PATCH v2 1/4] mtd: rawnand: Add support manufacturer specific lock/unlock operatoin Mason Yang
2019-10-30 3:22 ` 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 ` Mason Yang [this message]
2019-10-30 5:56 ` [PATCH v2 3/4] mtd: rawnand: Add support manufacturer specific suspend/resume operation 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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