ASoC: Use regmap update bits operation for drivers using regmap

If a driver is using regmap directly ensure that we're coherent with
non-ASoC register updates by using the regmap API directly to do our
read/modify/write cycles. This will bypass the ASoC cache but drivers
using regmap directly should not be using the ASoC cache.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

3 files changed, 33 insertions, 20 deletions

diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c
index 41c8e45a23e..35a1e639d7f 100644
--- a/sound/soc/soc-core.c
+++ b/sound/soc/soc-core.c
@@ -1869,23 +1869,28 @@ EXPORT_SYMBOL_GPL(snd_soc_bulk_write_raw);
 int snd_soc_update_bits(struct snd_soc_codec *codec, unsigned short reg,
                                 unsigned int mask, unsigned int value)
 {
-        int change;
+        bool change;
         unsigned int old, new;
         int ret;
 
-        ret = snd_soc_read(codec, reg);
-        if (ret < 0)
-                return ret;
-
-        old = ret;
-        new = (old & ~mask) | (value & mask);
-        change = old != new;
-        if (change) {
-                ret = snd_soc_write(codec, reg, new);
+        if (codec->using_regmap) {
+                ret = regmap_update_bits_check(codec->control_data, reg,
+                                               mask, value, &change);
+        } else {
+                ret = snd_soc_read(codec, reg);
                 if (ret < 0)
                         return ret;
+
+                old = ret;
+                new = (old & ~mask) | (value & mask);
+                change = old != new;
+                if (change)
+                        ret = snd_soc_write(codec, reg, new);
         }
 
+        if (ret < 0)
+                return ret;
+
         return change;
 }
 EXPORT_SYMBOL_GPL(snd_soc_update_bits);
diff --git a/sound/soc/soc-dapm.c b/sound/soc/soc-dapm.c
index 1f55ded4047..31a06b2b444 100644
--- a/sound/soc/soc-dapm.c
+++ b/sound/soc/soc-dapm.c
@@ -197,21 +197,28 @@ static int soc_widget_write(struct snd_soc_dapm_widget *w, int reg, int val)
 static int soc_widget_update_bits(struct snd_soc_dapm_widget *w,
         unsigned short reg, unsigned int mask, unsigned int value)
 {
-        int change;
+        bool change;
         unsigned int old, new;
         int ret;
 
-        ret = soc_widget_read(w, reg);
-        if (ret < 0)
-                return ret;
-
-        old = ret;
-        new = (old & ~mask) | (value & mask);
-        change = old != new;
-        if (change) {
-                ret = soc_widget_write(w, reg, new);
+        if (w->codec && w->codec->using_regmap) {
+                ret = regmap_update_bits_check(w->codec->control_data,
+                                               reg, mask, value, &change);
+                if (ret != 0)
+                        return ret;
+        } else {
+                ret = soc_widget_read(w, reg);
                 if (ret < 0)
                         return ret;
+
+                old = ret;
+                new = (old & ~mask) | (value & mask);
+                change = old != new;
+                if (change) {
+                        ret = soc_widget_write(w, reg, new);
+                        if (ret < 0)
+                                return ret;
+                }
         }
 
         return change;
diff --git a/sound/soc/soc-io.c b/sound/soc/soc-io.c
index c8610cbf34a..39ba5070ff9 100644
--- a/sound/soc/soc-io.c
+++ b/sound/soc/soc-io.c
@@ -140,6 +140,7 @@ int snd_soc_codec_set_cache_io(struct snd_soc_codec *codec,
 
         case SND_SOC_REGMAP:
                 /* Device has made its own regmap arrangements */
+                codec->using_regmap = true;
                 break;
 
         default: