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| author |   Mark Brown <broonie@opensource.wolfsonmicro.com> | 2012-02-17 14:20:14 -0800 |
|---|---|---|
| committer | Mark Brown <broonie@opensource.wolfsonmicro.com> | 2012-02-20 21:17:08 +0000 |
| commit | a6539c32949063c8147905512a83a98842c2d254 (patch) | |
| tree | 0eb2d7a118d3fc94b998bc6fe24239fcdefa4450 /drivers/base | |
| parent | Linux 3.3-rc4 (diff) | |
| download | linux-dev-a6539c32949063c8147905512a83a98842c2d254.tar.xz linux-dev-a6539c32949063c8147905512a83a98842c2d254.zip | |
regmap: Allow users to query the size of register values
Generic infrastructure based on top of regmap may want to operate on
blocks of data and therefore find it useful to find the size of the
register values. Provide an accessor operation for this.
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Diffstat (limited to 'drivers/base')
| -rw-r--r-- | drivers/base/regmap/regmap.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/drivers/base/regmap/regmap.c b/drivers/base/regmap/regmap.c index 65558034318f..e09119684c06 100644 --- a/drivers/base/regmap/regmap.c +++ b/drivers/base/regmap/regmap.c @@ -672,6 +672,21 @@ int regmap_update_bits_check(struct regmap *map, unsigned int reg, } EXPORT_SYMBOL_GPL(regmap_update_bits_check); +/** + * regmap_get_val_bytes(): Report the size of a register value + * + * Report the size of a register value, mainly intended to for use by + * generic infrastructure built on top of regmap. + */ +int regmap_get_val_bytes(struct regmap *map) +{ + if (map->format.format_write) + return -EINVAL; + + return map->format.val_bytes; +} +EXPORT_SYMBOL_GPL(regmap_get_val_bytes); + static int __init regmap_initcall(void) { regmap_debugfs_initcall(); |