From fd4b7286ccc469bf5dde22db6b8fcc455c3c4a66 Mon Sep 17 00:00:00 2001
From: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Date: Tue, 16 Jun 2015 08:52:39 +0000
Subject: [PATCH] regmap: add regmap_write_bits()
regmap_write_bits() is similar to regmap_update_bits(),
but regmap_write_bits() write data to register even though
it is same value.
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
---
drivers/base/regmap/regmap.c | 23 +++++++++++++++++++++++
include/linux/regmap.h | 9 +++++++++
2 files changed, 32 insertions(+)
diff --git a/drivers/base/regmap/regmap.c b/drivers/base/regmap/regmap.c
index 69ec411ce7224..d93bb9a8ab98c 100644
--- a/drivers/base/regmap/regmap.c
+++ b/drivers/base/regmap/regmap.c
@@ -2374,6 +2374,29 @@ int regmap_update_bits(struct regmap *map, unsigned int reg,
}
EXPORT_SYMBOL_GPL(regmap_update_bits);
+/**
+ * regmap_write_bits: Perform a read/modify/write cycle on the register map
+ *
+ * @map: Register map to update
+ * @reg: Register to update
+ * @mask: Bitmask to change
+ * @val: New value for bitmask
+ *
+ * Returns zero for success, a negative number on error.
+ */
+int regmap_write_bits(struct regmap *map, unsigned int reg,
+ unsigned int mask, unsigned int val)
+{
+ int ret;
+
+ map->lock(map->lock_arg);
+ ret = _regmap_update_bits(map, reg, mask, val, NULL);
+ map->unlock(map->lock_arg);
+
+ return ret;
+}
+EXPORT_SYMBOL_GPL(regmap_write_bits);
+
/**
* regmap_update_bits_async: Perform a read/modify/write cycle on the register
* map asynchronously
diff --git a/include/linux/regmap.h b/include/linux/regmap.h
index 59c55ea0f0b50..e4b9ad4f05ef3 100644
--- a/include/linux/regmap.h
+++ b/include/linux/regmap.h
@@ -424,6 +424,8 @@ int regmap_bulk_read(struct regmap *map, unsigned int reg, void *val,
size_t val_count);
int regmap_update_bits(struct regmap *map, unsigned int reg,
unsigned int mask, unsigned int val);
+int regmap_write_bits(struct regmap *map, unsigned int reg,
+ unsigned int mask, unsigned int val);
int regmap_update_bits_async(struct regmap *map, unsigned int reg,
unsigned int mask, unsigned int val);
int regmap_update_bits_check(struct regmap *map, unsigned int reg,
@@ -645,6 +647,13 @@ static inline int regmap_update_bits(struct regmap *map, unsigned int reg,
return -EINVAL;
}
+static inline int regmap_write_bits(struct regmap *map, unsigned int reg,
+ unsigned int mask, unsigned int val)
+{
+ WARN_ONCE(1, "regmap API is disabled");
+ return -EINVAL;
+}
+
static inline int regmap_update_bits_async(struct regmap *map,
unsigned int reg,
unsigned int mask, unsigned int val)