ASoC: cs4349: Set .writeable_reg for cs4349_regmap

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>

1 files changed, 12 insertions, 8 deletions

diff --git a/sound/soc/codecs/cs4349.c b/sound/soc/codecs/cs4349.c
index 4885695e35a7..a6604a34db34 100644
--- a/sound/soc/codecs/cs4349.c
+++ b/sound/soc/codecs/cs4349.c
@@ -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,
 };