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authorSrinivas Kandagatla <srinivas.kandagatla@linaro.org>2015-05-21 17:42:43 +0100
committerMark Brown <broonie@kernel.org>2015-05-22 12:19:18 +0100
commit668abc729fcb9d034eccadf63166d2c76cd645d1 (patch)
tree600b49220d650e05eda81702ae08b6a838f94f9f
parentb787f68c36d49bb1d9236f403813641efa74a031 (diff)
downloadlinux-linaro-stable-668abc729fcb9d034eccadf63166d2c76cd645d1.tar.gz
regmap: Introduce regmap_get_max_register
This patch introduces regmap_get_max_register() function which would be used by the infrastructures like nvmem framework built on top of regmap. Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Signed-off-by: Mark Brown <broonie@kernel.org>
-rw-r--r--drivers/base/regmap/regmap.c12
-rw-r--r--include/linux/regmap.h7
2 files changed, 19 insertions, 0 deletions
diff --git a/drivers/base/regmap/regmap.c b/drivers/base/regmap/regmap.c
index 6273ff072f3e..d6c84047b957 100644
--- a/drivers/base/regmap/regmap.c
+++ b/drivers/base/regmap/regmap.c
@@ -2613,6 +2613,18 @@ 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 ? 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 116655d92269..2d87deda79cd 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");