linux/drivers/base/regmap/regcache.c, branch v3.2-rc2

drivers/base: Add export.h for EXPORT_SYMBOL/THIS_MODULE as required.

2011-10-31T23:31:38Z

Most of these files were implicitly getting EXPORT_SYMBOL via device.h which was including module.h, but that path will be broken soon. [ with input from Stephen Rothwell ] Signed-off-by: Paul Gortmaker

regmap: Allow caches for devices with no defaults

2011-10-10T10:55:32Z

We only really need the defaults in order to cut down the number of registers we sync and to satisfy reads while the device is powered off but not all devices are going to need to do that (always on devices like PMICs being the prime example) so don't require those devices to supply a default. Instead only try to fall back to hardware defaults if the driver told us to. Devices using LZO won't be able to instantiate with this, that will require some updates in the LZO code to handle this case. Signed-off-by: Mark Brown Acked-by: Dimitris Papastamos

regmap: Return a sensible error code if we fail to read the cache

2011-10-10T09:24:03Z

If a register isn't cached then let callers know that so they can fall back or error handle appropriately. Signed-off-by: Mark Brown Acked-by: Dimitris Papastamos

regmap: Use bsearch() to search the register defaults

2011-10-09T11:36:56Z

Rather than open coding a binary search use the standard bsearch() using the comparison function we're already using for sort() on insert. This fixes a lockup I was observing due to iterating on min <= max rather than min < max when we fail to look up. Signed-off-by: Mark Brown Acked-by: Dimitris Papastamos

regmap: Fix doc comment

2011-10-03T10:50:53Z

Signed-off-by: Dimitris Papastamos Signed-off-by: Mark Brown

regmap: Optimize the lookup path to use binary search

2011-10-03T10:50:53Z

Since there are more lookups than insertions in a typical scenario, optimize the linear search into a binary search. For this to work, we need to keep reg_defaults sorted upon insertions, for now be lazy and use sort(). Signed-off-by: Dimitris Papastamos Signed-off-by: Mark Brown

regmap: Ensure we scream if we enable cache bypass/only at the same time

2011-09-30T12:57:47Z

Signed-off-by: Dimitris Papastamos Signed-off-by: Mark Brown

regmap: Implement regcache_cache_bypass helper function

2011-09-30T12:57:47Z

Ensure we've got a function so users can enable/disable the cache bypass option. Signed-off-by: Dimitris Papastamos Signed-off-by: Mark Brown

regmap: Save/restore the bypass state upon syncing

2011-09-30T12:57:47Z

Signed-off-by: Dimitris Papastamos Signed-off-by: Mark Brown

regmap: Lock the sync path, ensure we use the lockless _regmap_write()

2011-09-30T12:57:47Z

Signed-off-by: Dimitris Papastamos Signed-off-by: Mark Brown