linux-kernel - [PATCH V1 1/4] regmap: add function for set/clear bits

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Message-Id: <1336376139-1048-2-git-send-email-ldewangan@nvidia.com>
Date:	Mon,  7 May 2012 13:05:36 +0530
From:	Laxman Dewangan <ldewangan@...dia.com>
To:	broonie@...nsource.wolfsonmicro.com, gregkh@...uxfoundation.org,
	lrg@...com, linux-kernel@...r.kernel.org
Cc:	Laxman Dewangan <ldewangan@...dia.com>
Subject: [PATCH V1 1/4] regmap: add function for set/clear bits

Add regmap_set_bits() and regmap_clear_bits() for
setting/clearing bits.
Although this can be achieve by regmap_update_bits() but
having these functions gives good readability in driver
code which uses regmap apis.

Signed-off-by: Laxman Dewangan <ldewangan@...dia.com>
---
 drivers/base/regmap/regmap.c |   32 ++++++++++++++++++++++++++++++++
 include/linux/regmap.h       |   15 +++++++++++++++
 2 files changed, 47 insertions(+), 0 deletions(-)

diff --git a/drivers/base/regmap/regmap.c b/drivers/base/regmap/regmap.c
index 8a25006..d0c8144 100644
--- a/drivers/base/regmap/regmap.c
+++ b/drivers/base/regmap/regmap.c
@@ -942,6 +942,38 @@ int regmap_update_bits_check(struct regmap *map, unsigned int reg,
 EXPORT_SYMBOL_GPL(regmap_update_bits_check);
 
 /**
+ * regmap_set_bits: Set bits of register.
+ *
+ * @map: Register map to update
+ * @reg: Register to update
+ * @bits: Bits to set
+ *
+ * Returns zero for success, a negative number on error.
+ */
+int regmap_set_bits(struct regmap *map, unsigned int reg, unsigned int bits)
+{
+	bool change;
+	return _regmap_update_bits(map, reg, bits, bits, &change);
+}
+EXPORT_SYMBOL_GPL(regmap_set_bits);
+
+/**
+ * regmap_clear_bits: Clear bits of register.
+ *
+ * @map: Register map to update
+ * @reg: Register to update
+ * @bits: Bits to clear
+ *
+ * Returns zero for success, a negative number on error.
+ */
+int regmap_clear_bits(struct regmap *map, unsigned int reg, unsigned int bits)
+{
+	bool change;
+	return _regmap_update_bits(map, reg, bits, 0, &change);
+}
+EXPORT_SYMBOL_GPL(regmap_clear_bits);
+
+/**
  * regmap_register_patch: Register and apply register updates to be applied
  *                        on device initialistion
  *
diff --git a/include/linux/regmap.h b/include/linux/regmap.h
index ae797b1..bc859b2 100644
--- a/include/linux/regmap.h
+++ b/include/linux/regmap.h
@@ -185,6 +185,8 @@ int regmap_update_bits(struct regmap *map, unsigned int reg,
 int regmap_update_bits_check(struct regmap *map, unsigned int reg,
 			     unsigned int mask, unsigned int val,
 			     bool *change);
+int regmap_set_bits(struct regmap *map, unsigned int reg, unsigned int bits);
+int regmap_clear_bits(struct regmap *map, unsigned int reg, unsigned int bits);
 int regmap_get_val_bytes(struct regmap *map);
 
 int regcache_sync(struct regmap *map);
@@ -311,6 +313,19 @@ static inline int regmap_update_bits_check(struct regmap *map,
 	WARN_ONCE(1, "regmap API is disabled");
 	return -EINVAL;
 }
+static inline int regmap_set_bits(struct regmap *map,
+			unsigned int reg, unsigned int bits)
+{
+	WARN_ONCE(1, "regmap API is disabled");
+	return -EINVAL;
+}
+
+static inline int regmap_clear_bits(struct regmap *map,
+			unsigned int reg, unsigned int bits)
+{
+	WARN_ONCE(1, "regmap API is disabled");
+	return -EINVAL;
+}
 
 static inline int regmap_get_val_bytes(struct regmap *map)
 {
-- 
1.7.1.1

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