[PATCH 2/3] regcache: Introduce the index parsing API

From	Xiubo Li <lixiubo@cmss.chinamobile.com>
Newsgroups	linux.kernel
Subject	[PATCH 2/3] regcache: Introduce the index parsing API
Date	2015-12-17 09:50 +0100
Message-ID	<qGCq6-5pv-15@gated-at.bofh.it> (permalink)
References	<qGCq6-5pv-5@gated-at.bofh.it>
Organization	linux.* mail to news gateway

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Here introduces regcache_get_index() for regmap cache, which uses
the register stride order and bit rotation.

Signed-off-by: Xiubo Li <lixiubo@cmss.chinamobile.com>
---
 drivers/base/regmap/internal.h | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/base/regmap/internal.h b/drivers/base/regmap/internal.h
index d43784e..60699e6 100644
--- a/drivers/base/regmap/internal.h
+++ b/drivers/base/regmap/internal.h
@@ -270,4 +270,10 @@ static inline unsigned int regmap_get_offset(const struct regmap *map,
 	return index << map->reg_stride_order;
 }
 
+static inline unsigned int regcache_get_index(const struct regmap *map,
+					    unsigned int reg)
+{
+	return reg >> map->reg_stride_order;
+}
+
 #endif
-- 
1.8.3.1



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[PATCH 2/3] regcache: Introduce the index parsing API Xiubo Li <lixiubo@cmss.chinamobile.com> - 2015-12-17 09:50 +0100

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