[RFC PATCH 2/6] mtd: part: pass OF node to the MTD partition layer
Boris Brezillon
boris.brezillon at free-electrons.com
Thu Jul 30 06:50:21 PDT 2015
Pass the OF node attached an MTD partition so that specific MTD device
implementations can extract extra information from the DT definition.
Signed-off-by: Boris Brezillon <boris.brezillon at free-electrons.com>
---
drivers/mtd/mtdpart.c | 2 ++
drivers/mtd/ofpart.c | 1 +
include/linux/mtd/partitions.h | 3 ++-
3 files changed, 5 insertions(+), 1 deletion(-)
diff --git a/drivers/mtd/mtdpart.c b/drivers/mtd/mtdpart.c
index 9a45230..c2e5920 100644
--- a/drivers/mtd/mtdpart.c
+++ b/drivers/mtd/mtdpart.c
@@ -362,6 +362,8 @@ static struct mtd_part *allocate_partition(struct mtd_info *master,
return ERR_PTR(-ENOMEM);
}
+ slave->mtd.dev.of_node = part->of_node;
+
/* set up the MTD object for this partition */
slave->mtd.type = master->type;
slave->mtd.flags = master->flags & ~part->mask_flags;
diff --git a/drivers/mtd/ofpart.c b/drivers/mtd/ofpart.c
index aa26c32..8a06cfb 100644
--- a/drivers/mtd/ofpart.c
+++ b/drivers/mtd/ofpart.c
@@ -73,6 +73,7 @@ static int parse_ofpart_partitions(struct mtd_info *master,
continue;
}
+ (*pparts)[i].of_node = pp;
a_cells = of_n_addr_cells(pp);
s_cells = of_n_size_cells(pp);
(*pparts)[i].offset = of_read_number(reg, a_cells);
diff --git a/include/linux/mtd/partitions.h b/include/linux/mtd/partitions.h
index 6a35e6d..e4ff8a3 100644
--- a/include/linux/mtd/partitions.h
+++ b/include/linux/mtd/partitions.h
@@ -12,6 +12,7 @@
#include <linux/types.h>
+
/*
* Partition definition structure:
*
@@ -42,6 +43,7 @@ struct mtd_partition {
uint64_t offset; /* offset within the master MTD space */
uint32_t mask_flags; /* master MTD flags to mask out for this partition */
struct nand_ecclayout *ecclayout; /* out of band layout for this partition (NAND only) */
+ struct device_node *of_node; /* OF node attached to this partition (optional) */
};
#define MTDPART_OFS_RETAIN (-3)
@@ -63,7 +65,6 @@ struct mtd_part_parser_data {
struct device_node *of_node;
};
-
/*
* Functions dealing with the various ways of partitioning the space
*/
--
1.9.1
More information about the linux-mtd
mailing list