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Subject[PATCH v4 01/10] regmap: Introduce regmap_get_max_register.
Date
This patch introduces regmap_get_max_register() function which would be
used by the infrastructures like eeprom framework built on top of
regmap.

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
---
drivers/base/regmap/regmap.c | 12 ++++++++++++
include/linux/regmap.h | 7 +++++++
2 files changed, 19 insertions(+)

diff --git a/drivers/base/regmap/regmap.c b/drivers/base/regmap/regmap.c
index f99b098..d703921 100644
--- a/drivers/base/regmap/regmap.c
+++ b/drivers/base/regmap/regmap.c
@@ -2617,6 +2617,18 @@ int regmap_get_val_bytes(struct regmap *map)
}
EXPORT_SYMBOL_GPL(regmap_get_val_bytes);

+/**
+ * regmap_get_max_register(): Report the max register value
+ *
+ * Report the max register value, mainly intended to for use by
+ * generic infrastructure built on top of regmap.
+ */
+int regmap_get_max_register(struct regmap *map)
+{
+ return map->max_register ? : -EINVAL;
+}
+EXPORT_SYMBOL_GPL(regmap_get_max_register);
+
int regmap_parse_val(struct regmap *map, const void *buf,
unsigned int *val)
{
diff --git a/include/linux/regmap.h b/include/linux/regmap.h
index 116655d..2d87ded 100644
--- a/include/linux/regmap.h
+++ b/include/linux/regmap.h
@@ -433,6 +433,7 @@ 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_async_complete(struct regmap *map);
bool regmap_can_raw_write(struct regmap *map);

@@ -676,6 +677,12 @@ static inline int regmap_get_val_bytes(struct regmap *map)
return -EINVAL;
}

+static inline int regmap_get_max_register(struct regmap *map)
+{
+ WARN_ONCE(1, "regmap API is disabled");
+ return -EINVAL;
+}
+
static inline int regcache_sync(struct regmap *map)
{
WARN_ONCE(1, "regmap API is disabled");
--
1.9.1


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