[PATCH v3 2/9] regmap: Introduce regmap_get_reg_stride.

[Srinivas Kandagatla]

This patch introduces regmap_get_reg_stride() function which would
be used by the infrastructures like eeprom framework built on top of
regmap. Mostly this function would be used for sanity checks on inputs
within such infrastructure.

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla at linaro.org>
---
 drivers/base/regmap/regmap.c | 11 +++++++++++
 include/linux/regmap.h       |  7 +++++++
 2 files changed, 18 insertions(+)

diff --git a/drivers/base/regmap/regmap.c b/drivers/base/regmap/regmap.c
index 6fd234b..44d3d94 100644
--- a/drivers/base/regmap/regmap.c
+++ b/drivers/base/regmap/regmap.c
@@ -2628,6 +2628,17 @@ int regmap_get_max_register(struct regmap *map)
 }
 EXPORT_SYMBOL_GPL(regmap_get_max_register);
 
+ /* regmap_get_reg_stride(): Report the register address stride
+ *
+ * Report the register address stride, mainly intended to for use by
+ * generic infrastructure built on top of regmap.
+ */
+int regmap_get_reg_stride(struct regmap *map)
+{
+	return map->reg_stride;
+}
+EXPORT_SYMBOL_GPL(regmap_get_reg_stride);
+
 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 c46dbf3..b58067c 100644
--- a/include/linux/regmap.h
+++ b/include/linux/regmap.h
@@ -434,6 +434,7 @@ int regmap_update_bits_check_async(struct regmap *map, unsigned int reg,
 				   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);
 int regmap_async_complete(struct regmap *map);
 bool regmap_can_raw_write(struct regmap *map);
 
@@ -683,6 +684,12 @@ static inline int regmap_get_max_register(struct regmap *map)
 	return -EINVAL;
 }
 
+static inline int regmap_get_reg_stride(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