From 22f0d90a34827812413bb3fbeda6a2a79bb58423 Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Sat, 21 Jan 2012 12:01:14 +0000 Subject: regmap: Support register patch sets Device manufacturers frequently provide register sequences, usually not fully documented, to be run at startup in order to provide better defaults for devices (for example, improving performance in the light of silicon evaluation). Support such updates by allowing drivers to register update sets with the core. These updates will be written to the device immediately and will also be rewritten when the cache is synced. The assumption is that the reason for resyncing the cache will always be that the device has been powered off. If this turns out to not be the case then a separate operation can be provided. Currently the implementation only allows a single set of updates to be specified for a device, this could be extended in future. Signed-off-by: Mark Brown --- drivers/base/regmap/internal.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'drivers/base/regmap/internal.h') diff --git a/drivers/base/regmap/internal.h b/drivers/base/regmap/internal.h index 1a02b7537c8b..d141b80479b5 100644 --- a/drivers/base/regmap/internal.h +++ b/drivers/base/regmap/internal.h @@ -75,6 +75,9 @@ struct regmap { const void *reg_defaults_raw; void *cache; bool cache_dirty; + + struct reg_default *patch; + int patch_regs; }; struct regcache_ops { -- cgit v1.2.1