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-rw-r--r--target/linux/generic/backport-4.9/066-v4.16-0001-mtd-partitions-add-of_match_table-parser-matching.patch121
-rw-r--r--target/linux/generic/backport-4.9/066-v4.16-0002-mtd-ofpart-add-of_match_table-with-fixed-partitions.patch43
2 files changed, 164 insertions, 0 deletions
diff --git a/target/linux/generic/backport-4.9/066-v4.16-0001-mtd-partitions-add-of_match_table-parser-matching.patch b/target/linux/generic/backport-4.9/066-v4.16-0001-mtd-partitions-add-of_match_table-parser-matching.patch
new file mode 100644
index 0000000000..06931ce2a4
--- /dev/null
+++ b/target/linux/generic/backport-4.9/066-v4.16-0001-mtd-partitions-add-of_match_table-parser-matching.patch
@@ -0,0 +1,121 @@
+From bb2192123ec70470d6ea33f138846b175403a968 Mon Sep 17 00:00:00 2001
+From: Brian Norris <computersforpeace@gmail.com>
+Date: Thu, 4 Jan 2018 08:05:33 +0100
+Subject: [PATCH] mtd: partitions: add of_match_table parser matching
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+Partition parsers can now provide an of_match_table to enable
+flash<-->parser matching via device tree as documented in the
+mtd/partition.txt.
+
+It works by looking for a matching parser for every string in the
+"compatibility" property (starting with the most specific one).
+
+This support is currently limited to built-in parsers as it uses
+request_module() and friends. This should be sufficient for most cases
+though as compiling parsers as modules isn't a common choice.
+
+Signed-off-by: Brian Norris <computersforpeace@gmail.com>
+Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
+Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
+---
+ drivers/mtd/mtdpart.c | 59 ++++++++++++++++++++++++++++++++++++++++++
+ include/linux/mtd/partitions.h | 1 +
+ 2 files changed, 60 insertions(+)
+
+--- a/drivers/mtd/mtdpart.c
++++ b/drivers/mtd/mtdpart.c
+@@ -30,6 +30,7 @@
+ #include <linux/mtd/mtd.h>
+ #include <linux/mtd/partitions.h>
+ #include <linux/err.h>
++#include <linux/of.h>
+
+ #include "mtdcore.h"
+
+@@ -886,6 +887,45 @@ static int mtd_part_do_parse(struct mtd_
+ }
+
+ /**
++ * mtd_part_get_compatible_parser - find MTD parser by a compatible string
++ *
++ * @compat: compatible string describing partitions in a device tree
++ *
++ * MTD parsers can specify supported partitions by providing a table of
++ * compatibility strings. This function finds a parser that advertises support
++ * for a passed value of "compatible".
++ */
++static struct mtd_part_parser *mtd_part_get_compatible_parser(const char *compat)
++{
++ struct mtd_part_parser *p, *ret = NULL;
++
++ spin_lock(&part_parser_lock);
++
++ list_for_each_entry(p, &part_parsers, list) {
++ const struct of_device_id *matches;
++
++ matches = p->of_match_table;
++ if (!matches)
++ continue;
++
++ for (; matches->compatible[0]; matches++) {
++ if (!strcmp(matches->compatible, compat) &&
++ try_module_get(p->owner)) {
++ ret = p;
++ break;
++ }
++ }
++
++ if (ret)
++ break;
++ }
++
++ spin_unlock(&part_parser_lock);
++
++ return ret;
++}
++
++/**
+ * parse_mtd_partitions - parse MTD partitions
+ * @master: the master partition (describes whole MTD device)
+ * @types: names of partition parsers to try or %NULL
+@@ -911,8 +951,27 @@ int parse_mtd_partitions(struct mtd_info
+ struct mtd_part_parser_data *data)
+ {
+ struct mtd_part_parser *parser;
++ struct device_node *np;
++ struct property *prop;
++ const char *compat;
+ int ret, err = 0;
+
++ np = of_get_child_by_name(mtd_get_of_node(master), "partitions");
++ of_property_for_each_string(np, "compatible", prop, compat) {
++ parser = mtd_part_get_compatible_parser(compat);
++ if (!parser)
++ continue;
++ ret = mtd_part_do_parse(parser, master, pparts, data);
++ if (ret > 0) {
++ of_node_put(np);
++ return 0;
++ }
++ mtd_part_parser_put(parser);
++ if (ret < 0 && !err)
++ err = ret;
++ }
++ of_node_put(np);
++
+ if (!types)
+ types = default_mtd_part_types;
+
+--- a/include/linux/mtd/partitions.h
++++ b/include/linux/mtd/partitions.h
+@@ -77,6 +77,7 @@ struct mtd_part_parser {
+ struct list_head list;
+ struct module *owner;
+ const char *name;
++ const struct of_device_id *of_match_table;
+ int (*parse_fn)(struct mtd_info *, const struct mtd_partition **,
+ struct mtd_part_parser_data *);
+ void (*cleanup)(const struct mtd_partition *pparts, int nr_parts);
diff --git a/target/linux/generic/backport-4.9/066-v4.16-0002-mtd-ofpart-add-of_match_table-with-fixed-partitions.patch b/target/linux/generic/backport-4.9/066-v4.16-0002-mtd-ofpart-add-of_match_table-with-fixed-partitions.patch
new file mode 100644
index 0000000000..2092cc28fd
--- /dev/null
+++ b/target/linux/generic/backport-4.9/066-v4.16-0002-mtd-ofpart-add-of_match_table-with-fixed-partitions.patch
@@ -0,0 +1,43 @@
+From 4ac9222778478a00c7fc9d347b7ed1e0e595120d Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal@milecki.pl>
+Date: Thu, 4 Jan 2018 08:05:34 +0100
+Subject: [PATCH] mtd: ofpart: add of_match_table with "fixed-partitions"
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+This allows using this parser with any flash driver that takes care of
+setting of_node (using mtd_set_of_node helper) correctly. Up to now
+support for "fixed-partitions" DT compatibility string was working only
+with flash drivers that were specifying "ofpart" (manually or by letting
+mtd use the default set of parsers).
+
+This matches existing bindings documentation.
+
+Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
+Reviewed-by: Brian Norris <computersforpeace@gmail.com>
+Tested-by: Brian Norris <computersforpeace@gmail.com>
+Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
+---
+ drivers/mtd/ofpart.c | 7 +++++++
+ 1 file changed, 7 insertions(+)
+
+--- a/drivers/mtd/ofpart.c
++++ b/drivers/mtd/ofpart.c
+@@ -140,9 +140,16 @@ ofpart_none:
+ return ret;
+ }
+
++static const struct of_device_id parse_ofpart_match_table[] = {
++ { .compatible = "fixed-partitions" },
++ {},
++};
++MODULE_DEVICE_TABLE(of, parse_ofpart_match_table);
++
+ static struct mtd_part_parser ofpart_parser = {
+ .parse_fn = parse_ofpart_partitions,
+ .name = "ofpart",
++ .of_match_table = parse_ofpart_match_table,
+ };
+
+ static int parse_ofoldpart_partitions(struct mtd_info *master,