Minki/linux
1
0
Fork 1
mirror of https://github.com/torvalds/linux.git synced 2024-11-11 06:31:49 +00:00
Code Issues Packages Projects Releases Wiki Activity

ASoC: cs4349: Set .writeable_reg for cs4349_regmap

Browse Source 
The first valid register index is 1 rather than 0, and the CS4349_CHIPID
is readonly. So set .writeable_reg to avoid writing to these registers.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Axel Lin 2015-07-19 09:14:23 +08:00 committed by Mark Brown
parent da304ac37e
commit 0443de7e7e
1 changed files with 12 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

20
sound/soc/codecs/cs4349.c
View File

@ -54,14 +54,17 @@ struct cs4349_private {
static bool cs4349_readable_register(struct device *dev, unsigned int reg)
{
switch (reg) {
case CS4349_CHIPID:
case CS4349_MODE:
case CS4349_VMI:
case CS4349_MUTE:
case CS4349_VOLA:
case CS4349_VOLB:
case CS4349_RMPFLT:
case CS4349_MISC:
case CS4349_CHIPID ... CS4349_MISC:
return true;
default:
return false;
}
}
static bool cs4349_writeable_register(struct device *dev, unsigned int reg)
{
switch (reg) {
case CS4349_MODE ... CS4349_MISC:
return true;
default:
return false;
@ -270,6 +273,7 @@ static const struct regmap_config cs4349_regmap = {
.reg_defaults = cs4349_reg_defaults,
.num_reg_defaults = ARRAY_SIZE(cs4349_reg_defaults),
.readable_reg = cs4349_readable_register,
.writeable_reg = cs4349_writeable_register,
.cache_type = REGCACHE_RBTREE,
};