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Subject[PATCH v2 03/17] drivers:mtd:add dual plane page program support in partition layer
Date
From: Bean Huo <beanhuo@micron.com>

This file patch is to add multi-plane page program function in MTD partition layer and
call back MTD master dual plane page program function.

Signed-off-by: BeanHuo <beanhuo@micron.com>
---
drivers/mtd/mtdpart.c | 19 +++++++++++++++++++
1 file changed, 19 insertions(+)

diff --git a/drivers/mtd/mtdpart.c b/drivers/mtd/mtdpart.c
index cafdb88..85f68d0 100644
--- a/drivers/mtd/mtdpart.c
+++ b/drivers/mtd/mtdpart.c
@@ -203,6 +203,23 @@ static int part_write_oob(struct mtd_info *mtd, loff_t to,
return part->master->_write_oob(part->master, to + part->offset, ops);
}

+static int part_write_dual_plane_oob(struct mtd_info *mtd, loff_t to_plane0,
+ struct mtd_oob_ops *ops_plane0, loff_t to_plane1,
+ struct mtd_oob_ops *ops_plane1)
+{
+ struct mtd_part *part = PART(mtd);
+
+ if ((to_plane0 >= mtd->size) || ((to_plane1 >= mtd->size)))
+ return -EINVAL;
+ if ((ops_plane0->datbuf && to_plane0 + ops_plane0->len > mtd->size) ||
+ (ops_plane1->datbuf && to_plane1 + ops_plane0->len > mtd->size))
+ return -EINVAL;
+
+ return part->master->_dual_plane_write_oob(part->master,
+ to_plane0 + part->offset, ops_plane0,
+ to_plane1 + part->offset, ops_plane1);
+}
+
static int part_write_user_prot_reg(struct mtd_info *mtd, loff_t from,
size_t len, size_t *retlen, u_char *buf)
{
@@ -409,6 +426,8 @@ static struct mtd_part *allocate_partition(struct mtd_info *master,
slave->mtd._read_oob = part_read_oob;
if (master->_write_oob)
slave->mtd._write_oob = part_write_oob;
+ if (master->_dual_plane_write_oob)
+ slave->mtd._dual_plane_write_oob = part_write_dual_plane_oob;
if (master->_read_user_prot_reg)
slave->mtd._read_user_prot_reg = part_read_user_prot_reg;
if (master->_read_fact_prot_reg)
--
1.9.1
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