regmap: Implement writable register checks
authorMark Brown <broonie@opensource.wolfsonmicro.com>
Sun, 24 Jul 2011 10:46:20 +0000 (11:46 +0100)
committerMark Brown <broonie@opensource.wolfsonmicro.com>
Mon, 8 Aug 2011 06:56:41 +0000 (15:56 +0900)
This is mainly intended to be used by devices which can dynamically
block register writes at runtime, for other devices there is usually
limited value.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

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