diff options
| author | Mark Brown <broonie@kernel.org> | 2023-03-25 01:58:42 +0300 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2023-03-27 03:42:37 +0300 |
| commit | f18ee501e233a2b830a0c84a2e780ab02d946c04 (patch) | |
| tree | 6fb284a776a1655dda42cee619a2eca2852d421a /drivers | |
| parent | 2d38e8615a21e264042870f811247d5c52c27f4e (diff) | |
| download | linux-f18ee501e233a2b830a0c84a2e780ab02d946c04.tar.xz | |
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: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20230324-regmap-reg-read-write-page-v1-1-1fbc0dac67ae@kernel.org
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/base/regmap/regmap.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/drivers/base/regmap/regmap.c b/drivers/base/regmap/regmap.c index a4e4367648bf..473b65b102db 100644 --- a/drivers/base/regmap/regmap.c +++ b/drivers/base/regmap/regmap.c @@ -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, ®, 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, ®, range, 1); + if (ret != 0) + return ret; + } reg = regmap_reg_addr(map, reg); return map->bus->reg_read(map->bus_context, reg, val); |