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Commit 137b8334 authored by Mark Brown's avatar Mark Brown
Browse files

regmap: cache: Use raw I/O to sync rbtrees if we can 



This will bring no meaningful benefit by itself, it is done as a separate
commit to aid bisection if there are problems with the following commits
adding support for coalescing adjacent writes.

Signed-off-by: default avatarMark Brown <broonie@opensource.wolfsonmicro.com>
parent 221ad7f2

drivers/base/regmap/regcache-rbtree.c

+18 −1
Original line number Diff line number Diff line
@@ -55,6 +55,12 @@ static unsigned int regcache_rbtree_get_register(struct regmap *map, 
	return regcache_get_val(map, rbnode->block, idx);

}



static const void *regcache_rbtree_get_reg_addr(struct regmap *map,

	struct regcache_rbtree_node *rbnode, unsigned int idx)

{

	return regcache_get_val_addr(map, rbnode->block, idx);

}



static void regcache_rbtree_set_register(struct regmap *map,

					 struct regcache_rbtree_node *rbnode,

					 unsigned int idx, unsigned int val)
@@ -442,6 +448,7 @@ static int regcache_rbtree_sync(struct regmap *map, unsigned int min, 
	struct regcache_rbtree_node *rbnode;

	unsigned int regtmp;

	unsigned int val;

	const void *addr;

	int ret;

	int i, base, end;
@@ -480,7 +487,17 @@ static int regcache_rbtree_sync(struct regmap *map, unsigned int min, 
				continue;



			map->cache_bypass = 1;



			if (regmap_can_raw_write(map)) {

				addr = regcache_rbtree_get_reg_addr(map,

								    rbnode, i);

				ret = _regmap_raw_write(map, regtmp, addr,

							map->format.val_bytes,

							false);

			} else {

				ret = _regmap_write(map, regtmp, val);

			}



			map->cache_bypass = 0;

			if (ret)

				return ret;