Unverified Commit f18ee501 authored by Mark Brown's avatar Mark Brown
Browse files

regmap: Support paging for buses with reg_read()/reg_write() 



We don't currently support paging for regmaps where the I/O happens through
bus provided reg_read() and reg_write() operatons, we simply ignore the
range since nothing is wired up properly. Wire things up.

Signed-off-by: default avatarMark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20230324-regmap-reg-read-write-page-v1-1-1fbc0dac67ae@kernel.org
parent 2d38e861

drivers/base/regmap/regmap.c

+18 −0
Original line number Diff line number Diff line
@@ -1945,6 +1945,15 @@ static int _regmap_bus_reg_write(void *context, unsigned int reg, 
				 unsigned int val)

{

	struct regmap *map = context;

	struct regmap_range_node *range;

	int ret;



	range = _regmap_range_lookup(map, reg);

	if (range) {

		ret = _regmap_select_page(map, &reg, range, 1);

		if (ret != 0)

			return ret;

	}



	reg = regmap_reg_addr(map, reg);

	return map->bus->reg_write(map->bus_context, reg, val);
@@ -2842,6 +2851,15 @@ static int _regmap_bus_reg_read(void *context, unsigned int reg, 
				unsigned int *val)

{

	struct regmap *map = context;

	struct regmap_range_node *range;

	int ret;



	range = _regmap_range_lookup(map, reg);

	if (range) {

		ret = _regmap_select_page(map, &reg, range, 1);

		if (ret != 0)

			return ret;

	}



	reg = regmap_reg_addr(map, reg);

	return map->bus->reg_read(map->bus_context, reg, val);