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Subject[PATCH 1/7][RFC] regmap: add regmap_raw_update_bits() and merge all regmap_update_bits_xxx()
Date
From: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>

Current regmap has many similar update functions, but the difference is
very few. This patch adds new regmap_raw_update_bits() and merge all
update functions into it by macro.
regmap_update_bits()
regmap_update_bits_async()
regmap_update_bits_check()
regmap_update_bits_check_async()

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
---
drivers/base/regmap/regmap.c | 113 ++++++-------------------------------------
include/linux/regmap.h | 54 ++++++---------------
2 files changed, 31 insertions(+), 136 deletions(-)

diff --git a/drivers/base/regmap/regmap.c b/drivers/base/regmap/regmap.c
index ee54e84..c91e67b 100644
--- a/drivers/base/regmap/regmap.c
+++ b/drivers/base/regmap/regmap.c
@@ -2648,76 +2648,34 @@ static int _regmap_update_bits(struct regmap *map, unsigned int reg,
}

/**
- * regmap_update_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_update_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, false);
- map->unlock(map->lock_arg);
-
- return ret;
-}
-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, true);
- 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
+ * regmap_raw_update_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
+ * @change: Boolean indicating if a write was done
+ * @async: Boolean indicating asynchronously
+ * @force: Boolean indicating use force update
*
+ * if async was true,
* With most buses the read must be done synchronously so this is most
* useful for devices with a cache which do not need to interact with
* the hardware to determine the current register value.
*
* Returns zero for success, a negative number on error.
*/
-int regmap_update_bits_async(struct regmap *map, unsigned int reg,
- unsigned int mask, unsigned int val)
+int regmap_raw_update_bits(struct regmap *map, unsigned int reg,
+ unsigned int mask, unsigned int val,
+ bool *change, bool async, bool force)
{
int ret;

map->lock(map->lock_arg);

- map->async = true;
+ map->async = async ? true : false;

- ret = _regmap_update_bits(map, reg, mask, val, NULL, false);
+ ret = _regmap_update_bits(map, reg, mask, val, change, force);

map->async = false;

@@ -2725,69 +2683,30 @@ int regmap_update_bits_async(struct regmap *map, unsigned int reg,

return ret;
}
-EXPORT_SYMBOL_GPL(regmap_update_bits_async);
-
-/**
- * regmap_update_bits_check: Perform a read/modify/write cycle on the
- * register map and report if updated
- *
- * @map: Register map to update
- * @reg: Register to update
- * @mask: Bitmask to change
- * @val: New value for bitmask
- * @change: Boolean indicating if a write was done
- *
- * Returns zero for success, a negative number on error.
- */
-int regmap_update_bits_check(struct regmap *map, unsigned int reg,
- unsigned int mask, unsigned int val,
- bool *change)
-{
- int ret;
-
- map->lock(map->lock_arg);
- ret = _regmap_update_bits(map, reg, mask, val, change, false);
- map->unlock(map->lock_arg);
- return ret;
-}
-EXPORT_SYMBOL_GPL(regmap_update_bits_check);
+EXPORT_SYMBOL_GPL(regmap_raw_update_bits);

/**
- * regmap_update_bits_check_async: Perform a read/modify/write cycle on the
- * register map asynchronously and report if
- * updated
+ * 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
- * @change: Boolean indicating if a write was done
- *
- * With most buses the read must be done synchronously so this is most
- * useful for devices with a cache which do not need to interact with
- * the hardware to determine the current register value.
*
* Returns zero for success, a negative number on error.
*/
-int regmap_update_bits_check_async(struct regmap *map, unsigned int reg,
- unsigned int mask, unsigned int val,
- bool *change)
+int regmap_write_bits(struct regmap *map, unsigned int reg,
+ unsigned int mask, unsigned int val)
{
int ret;

map->lock(map->lock_arg);
-
- map->async = true;
-
- ret = _regmap_update_bits(map, reg, mask, val, change, false);
-
- map->async = false;
-
+ ret = _regmap_update_bits(map, reg, mask, val, NULL, true);
map->unlock(map->lock_arg);

return ret;
}
-EXPORT_SYMBOL_GPL(regmap_update_bits_check_async);
+EXPORT_SYMBOL_GPL(regmap_write_bits);

void regmap_async_complete_cb(struct regmap_async *async, int ret)
{
diff --git a/include/linux/regmap.h b/include/linux/regmap.h
index 1839434..0b8b76a 100644
--- a/include/linux/regmap.h
+++ b/include/linux/regmap.h
@@ -65,6 +65,15 @@ struct reg_sequence {
unsigned int delay_us;
};

+#define regmap_update_bits(map, reg, mask, val) \
+ regmap_raw_update_bits(map, reg, mask, val, NULL, false, false)
+#define regmap_update_bits_async(map, reg, mask, val)\
+ regmap_raw_update_bits(map, reg, mask, val, NULL, true, false)
+#define regmap_update_bits_check(map, reg, mask, val, change)\
+ regmap_raw_update_bits(map, reg, mask, val, change, false, false)
+#define regmap_update_bits_check_async(map, reg, mask, val, change)\
+ regmap_raw_update_bits(map, reg, mask, val, change, true, false)
+
#ifdef CONFIG_REGMAP

enum regmap_endian {
@@ -691,18 +700,11 @@ int regmap_raw_read(struct regmap *map, unsigned int reg,
void *val, size_t val_len);
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_raw_update_bits(struct regmap *map, unsigned int reg,
+ unsigned int mask, unsigned int val,
+ bool *change, bool async, bool force);
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,
- unsigned int mask, unsigned int val,
- bool *change);
-int regmap_update_bits_check_async(struct regmap *map, unsigned int reg,
- unsigned int mask, unsigned int val,
- bool *change);
int regmap_get_val_bytes(struct regmap *map);
int regmap_get_max_register(struct regmap *map);
int regmap_get_reg_stride(struct regmap *map);
@@ -937,8 +939,9 @@ static inline int regmap_bulk_read(struct regmap *map, unsigned int reg,
return -EINVAL;
}

-static inline int regmap_update_bits(struct regmap *map, unsigned int reg,
- unsigned int mask, unsigned int val)
+static inline int regmap_raw_update_bits(struct regmap *map, unsigned int reg,
+ unsigned int mask, unsigned int val,
+ bool *change, bool async, bool force)
{
WARN_ONCE(1, "regmap API is disabled");
return -EINVAL;
@@ -951,33 +954,6 @@ static inline int regmap_write_bits(struct regmap *map, unsigned int reg,
return -EINVAL;
}

-static inline int regmap_update_bits_async(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_check(struct regmap *map,
- unsigned int reg,
- unsigned int mask, unsigned int val,
- bool *change)
-{
- WARN_ONCE(1, "regmap API is disabled");
- return -EINVAL;
-}
-
-static inline int regmap_update_bits_check_async(struct regmap *map,
- unsigned int reg,
- unsigned int mask,
- unsigned int val,
- bool *change)
-{
- WARN_ONCE(1, "regmap API is disabled");
- return -EINVAL;
-}
-
static inline int regmap_get_val_bytes(struct regmap *map)
{
WARN_ONCE(1, "regmap API is disabled");
--
1.9.1
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