diff options
| author | Mark Brown <broonie@opensource.wolfsonmicro.com> | 2013-05-08 13:55:22 +0100 |
|---|---|---|
| committer | Mark Brown <broonie@opensource.wolfsonmicro.com> | 2013-05-12 18:46:47 +0400 |
| commit | 697e85bc6a9aa44ecd73392586fe9cfd7e0467ba (patch) | |
| tree | c07e5c212d9eed90f1d80bc5b923755a5f6888ea /include | |
| parent | f722406faae2d073cc1d01063d1123c35425939e (diff) | |
regmap: Add support for discarding parts of the register cache
Allow drivers to discard parts of the register cache, for example if part
of the hardware has been reset.
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/regmap.h | 9 | ||||
| -rw-r--r-- | include/trace/events/regmap.h | 23 |
2 files changed, 32 insertions, 0 deletions
diff --git a/include/linux/regmap.h b/include/linux/regmap.h index 02d84e24b7c..5067ee94eb9 100644 --- a/include/linux/regmap.h +++ b/include/linux/regmap.h @@ -394,6 +394,8 @@ bool regmap_can_raw_write(struct regmap *map); int regcache_sync(struct regmap *map); int regcache_sync_region(struct regmap *map, unsigned int min, unsigned int max); +int regcache_drop_region(struct regmap *map, unsigned int min, + unsigned int max); void regcache_cache_only(struct regmap *map, bool enable); void regcache_cache_bypass(struct regmap *map, bool enable); void regcache_mark_dirty(struct regmap *map); @@ -562,6 +564,13 @@ static inline int regcache_sync_region(struct regmap *map, unsigned int min, return -EINVAL; } +static inline int regcache_drop_region(struct regmap *map, unsigned int min, + unsigned int max) +{ + WARN_ONCE(1, "regmap API is disabled"); + return -EINVAL; +} + static inline void regcache_cache_only(struct regmap *map, bool enable) { WARN_ONCE(1, "regmap API is disabled"); diff --git a/include/trace/events/regmap.h b/include/trace/events/regmap.h index a43a2f67bd8..23d561512f6 100644 --- a/include/trace/events/regmap.h +++ b/include/trace/events/regmap.h @@ -223,6 +223,29 @@ DEFINE_EVENT(regmap_async, regmap_async_complete_done, ); +TRACE_EVENT(regcache_drop_region, + + TP_PROTO(struct device *dev, unsigned int from, + unsigned int to), + + TP_ARGS(dev, from, to), + + TP_STRUCT__entry( + __string( name, dev_name(dev) ) + __field( unsigned int, from ) + __field( unsigned int, to ) + ), + + TP_fast_assign( + __assign_str(name, dev_name(dev)); + __entry->from = from; + __entry->to = to; + ), + + TP_printk("%s %u-%u", __get_str(name), (unsigned int)__entry->from, + (unsigned int)__entry->to) +); + #endif /* _TRACE_REGMAP_H */ /* This part must be outside protection */ |