From 668abc729fcb9d034eccadf63166d2c76cd645d1 Mon Sep 17 00:00:00 2001 From: Srinivas Kandagatla Date: Thu, 21 May 2015 17:42:43 +0100 Subject: [PATCH] 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 Signed-off-by: Mark Brown --- 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 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"); -- 2.39.2