1 files changed, 44 insertions, 0 deletions
diff --git a/drivers/mtd/maps/map_funcs.c b/drivers/mtd/maps/map_funcs.c
new file mode 100644
index 0000000000..5b684c170d
--- /dev/null
+++ b/drivers/mtd/maps/map_funcs.c
@@ -0,0 +1,44 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Out-of-line map I/O functions for simple maps when CONFIG_COMPLEX_MAPPINGS
+ * is enabled.
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+
+#include <linux/mtd/map.h>
+#include <linux/mtd/xip.h>
+
+static map_word __xipram simple_map_read(struct map_info *map, unsigned long ofs)
+{
+	return inline_map_read(map, ofs);
+}
+
+static void __xipram simple_map_write(struct map_info *map, const map_word datum, unsigned long ofs)
+{
+	inline_map_write(map, datum, ofs);
+}
+
+static void __xipram simple_map_copy_from(struct map_info *map, void *to, unsigned long from, ssize_t len)
+{
+	inline_map_copy_from(map, to, from, len);
+}
+
+static void __xipram simple_map_copy_to(struct map_info *map, unsigned long to, const void *from, ssize_t len)
+{
+	inline_map_copy_to(map, to, from, len);
+}
+
+void simple_map_init(struct map_info *map)
+{
+	BUG_ON(!map_bankwidth_supported(map->bankwidth));
+
+	map->read = simple_map_read;
+	map->write = simple_map_write;
+	map->copy_from = simple_map_copy_from;
+	map->copy_to = simple_map_copy_to;
+}
+
+EXPORT_SYMBOL(simple_map_init);
+MODULE_LICENSE("GPL");