linux-kernel - [PATCH 3/3] mtd: spinand: Insert Plane Select bit for the column address

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Message-Id: <20240710011541.342682-4-linchengming884@gmail.com>
Date: Wed, 10 Jul 2024 09:15:41 +0800
From: Cheng Ming Lin <linchengming884@...il.com>
To: miquel.raynal@...tlin.com,
	vigneshr@...com,
	linux-mtd@...ts.infradead.org,
	linux-kernel@...r.kernel.org
Cc: richard@....at,
	alvinzhou@...c.com.tw,
	leoyu@...c.com.tw,
	Cheng Ming Lin <chengminglin@...c.com.tw>
Subject: [PATCH 3/3] mtd: spinand: Insert Plane Select bit for the column address

From: Cheng Ming Lin <chengminglin@...c.com.tw>

In the function spinand_read_from_cache_op and
spinand_write_to_cache_op, add an if statement
to determine whether the device has fixups and
their corresponding functions. If so, give the
Plane Select bit to the column address.

In the function spinand_match_and_init, add
spinand_info in spinand_device for determining
whether Plane Select bit should be inserted.

Signed-off-by: Cheng Ming Lin <chengminglin@...c.com.tw>
---
 drivers/mtd/nand/spi/core.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/drivers/mtd/nand/spi/core.c b/drivers/mtd/nand/spi/core.c
index e0b6715e5dfe..d6d6f3832f9d 100644
--- a/drivers/mtd/nand/spi/core.c
+++ b/drivers/mtd/nand/spi/core.c
@@ -386,6 +386,9 @@ static int spinand_read_from_cache_op(struct spinand_device *spinand,
 	else
 		rdesc = spinand->dirmaps[req->pos.plane].rdesc_ecc;
 
+	if (spinand->info->fixups && spinand->info->fixups->read_from_cache)
+		column = spinand->info->fixups->read_from_cache(spinand, req, column);
+
 	while (nbytes) {
 		ret = spi_mem_dirmap_read(rdesc, column, nbytes, buf);
 		if (ret < 0)
@@ -460,6 +463,9 @@ static int spinand_write_to_cache_op(struct spinand_device *spinand,
 	else
 		wdesc = spinand->dirmaps[req->pos.plane].wdesc_ecc;
 
+	if (spinand->info->fixups && spinand->info->fixups->write_to_cache)
+		column = spinand->info->fixups->write_to_cache(spinand, req, column);
+
 	while (nbytes) {
 		ret = spi_mem_dirmap_write(wdesc, column, nbytes, buf);
 		if (ret < 0)
@@ -1095,6 +1101,7 @@ int spinand_match_and_init(struct spinand_device *spinand,
 		spinand->flags = table[i].flags;
 		spinand->id.len = 1 + table[i].devid.len;
 		spinand->select_target = table[i].select_target;
+		spinand->info = info;
 
 		op = spinand_select_op_variant(spinand,
 					       info->op_variants.read_cache);
-- 
2.25.1