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Commit a6539c32949063c8147905512a83a98842c2d254

Authored by Mark Brown
1 parent b01543dfe6
Exists in smarc-l5.0.0_1.0.0-ga and in 5 other branches imx_3.10.17_1.0.1_ga, imx_3.10.53_1.1.0_ga, imx_3.14.28_1.0.0_ga, smarc-imx_3.10.53_1.1.0_ga, smarc-imx_3.14.28_1.0.0_ga

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>

Showing 2 changed files with 16 additions and 0 deletions Side-by-side Diff

drivers/base/regmap/regmap.c
Diff comments   View file @ a6539c3
... ... @@ -672,6 +672,21 @@
672 672 }
673 673 EXPORT_SYMBOL_GPL(regmap_update_bits_check);
674 674  
  675 +/**
  676 + * regmap_get_val_bytes(): Report the size of a register value
  677 + *
  678 + * Report the size of a register value, mainly intended to for use by
  679 + * generic infrastructure built on top of regmap.
  680 + */
  681 +int regmap_get_val_bytes(struct regmap *map)
  682 +{
  683 + if (map->format.format_write)
  684 + return -EINVAL;
  685 +
  686 + return map->format.val_bytes;
  687 +}
  688 +EXPORT_SYMBOL_GPL(regmap_get_val_bytes);
  689 +
675 690 static int __init regmap_initcall(void)
676 691 {
677 692 regmap_debugfs_initcall();
include/linux/regmap.h
Diff comments   View file @ a6539c3
... ... @@ -143,6 +143,7 @@
143 143 int regmap_update_bits_check(struct regmap *map, unsigned int reg,
144 144 unsigned int mask, unsigned int val,
145 145 bool *change);
  146 +int regmap_get_val_bytes(struct regmap *map);
146 147  
147 148 int regcache_sync(struct regmap *map);
148 149 void regcache_cache_only(struct regmap *map, bool enable);