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authorDmitry Eremin-Solenikov <dbaryshkov@gmail.com>2011-05-30 01:26:17 +0400
committerArtem Bityutskiy <artem.bityutskiy@intel.com>2011-09-11 15:02:12 +0300
commitfbcf62a32be1e897a1d730af430758f881f8ef35 (patch)
tree43a99117f7857424f1f57b2dcf2e62ecd2d7ced0 /drivers/mtd/ofpart.c
parent628376fb5369c353680f03f47705b1437ff8de80 (diff)
downloadlinux-fbcf62a32be1e897a1d730af430758f881f8ef35.tar.bz2
mtd: physmap_of: move parse_obsolete_partitions to become separate parser
Move parse_obsolete_partitions() to ofpart.c and register it as an ofoldpart partitions parser. Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com> Signed-off-by: Artem Bityutskiy <dedekind1@gmail.com>
Diffstat (limited to 'drivers/mtd/ofpart.c')
-rw-r--r--drivers/mtd/ofpart.c75
1 files changed, 74 insertions, 1 deletions
diff --git a/drivers/mtd/ofpart.c b/drivers/mtd/ofpart.c
index 24007f3c2c2f..41c451842fd2 100644
--- a/drivers/mtd/ofpart.c
+++ b/drivers/mtd/ofpart.c
@@ -93,9 +93,82 @@ static struct mtd_part_parser ofpart_parser = {
.name = "ofpart",
};
+static int parse_ofoldpart_partitions(struct mtd_info *master,
+ struct mtd_partition **pparts,
+ struct mtd_part_parser_data *data)
+{
+ struct device_node *dp;
+ int i, plen, nr_parts;
+ const struct {
+ __be32 offset, len;
+ } *part;
+ const char *names;
+
+ if (!data)
+ return 0;
+
+ dp = data->of_node;
+ if (!dp)
+ return 0;
+
+ part = of_get_property(dp, "partitions", &plen);
+ if (!part)
+ return 0; /* No partitions found */
+
+ pr_warning("Device tree uses obsolete partition map binding: %s\n",
+ dp->full_name);
+
+ nr_parts = plen / sizeof(part[0]);
+
+ *pparts = kzalloc(nr_parts * sizeof(*(*pparts)), GFP_KERNEL);
+ if (!pparts)
+ return -ENOMEM;
+
+ names = of_get_property(dp, "partition-names", &plen);
+
+ for (i = 0; i < nr_parts; i++) {
+ (*pparts)[i].offset = be32_to_cpu(part->offset);
+ (*pparts)[i].size = be32_to_cpu(part->len) & ~1;
+ /* bit 0 set signifies read only partition */
+ if (be32_to_cpu(part->len) & 1)
+ (*pparts)[i].mask_flags = MTD_WRITEABLE;
+
+ if (names && (plen > 0)) {
+ int len = strlen(names) + 1;
+
+ (*pparts)[i].name = (char *)names;
+ plen -= len;
+ names += len;
+ } else {
+ (*pparts)[i].name = "unnamed";
+ }
+
+ part++;
+ }
+
+ return nr_parts;
+}
+
+static struct mtd_part_parser ofoldpart_parser = {
+ .owner = THIS_MODULE,
+ .parse_fn = parse_ofoldpart_partitions,
+ .name = "ofoldpart",
+};
+
static int __init ofpart_parser_init(void)
{
- return register_mtd_parser(&ofpart_parser);
+ int rc;
+ rc = register_mtd_parser(&ofpart_parser);
+ if (rc)
+ goto out;
+
+ rc = register_mtd_parser(&ofoldpart_parser);
+ if (!rc)
+ return 0;
+
+ deregister_mtd_parser(&ofoldpart_parser);
+out:
+ return rc;
}
module_init(ofpart_parser_init);