From c2ca9645de688095eeee67ce765c09018f154252 Mon Sep 17 00:00:00 2001
From: Mark Brown <broonie@opensource.wolfsonmicro.com>
Date: Mon, 19 Sep 2011 18:22:14 +0100
Subject: [PATCH] --- yaml --- r: 266992 b: refs/heads/master c:
 92afb286d744511f51a05f8acb6c111d05737617 h: refs/heads/master v: v3

---
 [refs]                               |  2 +-
 trunk/drivers/base/regmap/regcache.c | 18 ++++++++++++++++++
 trunk/include/linux/regmap.h         |  2 ++
 3 files changed, 21 insertions(+), 1 deletion(-)

diff --git a/[refs] b/[refs]
index 9058c71ab0ba..1ebcaeadce4f 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 39a58439d6006c48941511276c0041f56352c529
+refs/heads/master: 92afb286d744511f51a05f8acb6c111d05737617
diff --git a/trunk/drivers/base/regmap/regcache.c b/trunk/drivers/base/regmap/regcache.c
index 179f222d76c3..e2b172b93dba 100644
--- a/trunk/drivers/base/regmap/regcache.c
+++ b/trunk/drivers/base/regmap/regcache.c
@@ -240,6 +240,24 @@ int regcache_sync(struct regmap *map)
 }
 EXPORT_SYMBOL_GPL(regcache_sync);
 
+/**
+ * regcache_cache_only: Put a register map into cache only mode
+ *
+ * @map: map to configure
+ * @cache_only: flag if changes should be written to the hardware
+ *
+ * When a register map is marked as cache only writes to the register
+ * map API will only update the register cache, they will not cause
+ * any hardware changes.  This is useful for allowing portions of
+ * drivers to act as though the device were functioning as normal when
+ * it is disabled for power saving reasons.
+ */
+void regcache_cache_only(struct regmap *map, bool enable)
+{
+	map->cache_only = enable;
+}
+EXPORT_SYMBOL_GPL(regcache_cache_only);
+
 bool regcache_set_val(void *base, unsigned int idx,
 		      unsigned int val, unsigned int word_size)
 {
diff --git a/trunk/include/linux/regmap.h b/trunk/include/linux/regmap.h
index 63b30752adfd..76ac255a17a5 100644
--- a/trunk/include/linux/regmap.h
+++ b/trunk/include/linux/regmap.h
@@ -141,4 +141,6 @@ int regmap_update_bits(struct regmap *map, unsigned int reg,
 		       unsigned int mask, unsigned int val);
 
 int regcache_sync(struct regmap *map);
+void regcache_cache_only(struct regmap *map, bool enable);
+
 #endif