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of: partitions: factor out function to parse a single partition 

To make it usable for other code.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This commit is contained in:
Sascha Hauer 2013-05-24 23:31:29 +02:00
parent f57a85985b
commit abf95154f5
2 changed files with 42 additions and 33 deletions
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74
drivers/of/partition.c
View File

@ -23,44 +23,52 @@
#include <linux/mtd/mtd.h>
#include <nand.h>
struct cdev *of_parse_partition(struct cdev *cdev, struct device_node *node)
{
const char *partname;
char *filename;
struct cdev *new;
const __be32 *reg;
unsigned long offset, size;
const char *name;
int len;
unsigned long flags = 0;
reg = of_get_property(node, "reg", &len);
if (!reg)
return NULL;
offset = be32_to_cpu(reg[0]);
size = be32_to_cpu(reg[1]);
partname = of_get_property(node, "label", &len);
if (!partname)
partname = of_get_property(node, "name", &len);
name = (char *)partname;
debug("add partition: %s.%s 0x%08lx 0x%08lx\n", cdev->name, partname, offset, size);
if (of_get_property(node, "read-only", &len))
flags = DEVFS_PARTITION_READONLY;
filename = asprintf("%s.%s", cdev->name, partname);
new = devfs_add_partition(cdev->name, offset, size, flags, filename);
if (cdev->mtd && cdev->mtd->type == MTD_NANDFLASH)
dev_add_bb_dev(filename, NULL);
free(filename);
return new;
}
int of_parse_partitions(struct cdev *cdev, struct device_node *node)
{
struct device_node *n;
const char *partname;
char *filename;
for_each_child_of_node(node, n) {
const __be32 *reg;
unsigned long offset, size;
const char *name;
int len;
unsigned long flags = 0;
reg = of_get_property(n, "reg", &len);
if (!reg)
continue;
offset = be32_to_cpu(reg[0]);
size = be32_to_cpu(reg[1]);
partname = of_get_property(n, "label", &len);
if (!partname)
partname = of_get_property(n, "name", &len);
name = (char *)partname;
debug("add partition: %s.%s 0x%08lx 0x%08lx\n", cdev->name, partname, offset, size);
if (of_get_property(n, "read-only", &len))
flags = DEVFS_PARTITION_READONLY;
filename = asprintf("%s.%s", cdev->name, partname);
devfs_add_partition(cdev->name, offset, size, flags, filename);
if (cdev->mtd && cdev->mtd->type == MTD_NANDFLASH)
dev_add_bb_dev(filename, NULL);
free(filename);
of_parse_partition(cdev, n);
}
return 0;

1
include/of.h
View File

@ -221,6 +221,7 @@ extern int of_platform_populate(struct device_node *root,
struct device_d *parent);
extern struct device_d *of_find_device_by_node(struct device_node *np);
struct cdev *of_parse_partition(struct cdev *cdev, struct device_node *node);
int of_parse_partitions(struct cdev *cdev, struct device_node *node);
int of_device_is_stdout_path(struct device_d *dev);
const char *of_get_model(void);