1 files changed, 29 insertions, 2 deletions

diff --git a/sound/soc/codecs/wm8731.c b/sound/soc/codecs/wm8731.c
index 19844fc8cb1..56f54083874 100644
--- a/sound/soc/codecs/wm8731.c
+++ b/sound/soc/codecs/wm8731.c
@@ -46,6 +46,7 @@ struct wm8731_priv {
         struct regulator_bulk_data supplies[WM8731_NUM_SUPPLIES];
         u16 reg_cache[WM8731_CACHEREGNUM];
         unsigned int sysclk;
+        int sysclk_type;
 };
 
 
@@ -110,6 +111,7 @@ static const struct snd_kcontrol_new wm8731_input_mux_controls =
 SOC_DAPM_ENUM("Input Select", wm8731_enum[0]);
 
 static const struct snd_soc_dapm_widget wm8731_dapm_widgets[] = {
+SND_SOC_DAPM_SUPPLY("OSC", WM8731_PWR, 5, 1, NULL, 0),
 SND_SOC_DAPM_MIXER("Output Mixer", WM8731_PWR, 4, 1,
         &wm8731_output_mixer_controls[0],
         ARRAY_SIZE(wm8731_output_mixer_controls)),
@@ -127,7 +129,18 @@ SND_SOC_DAPM_INPUT("RLINEIN"),
 SND_SOC_DAPM_INPUT("LLINEIN"),
 };
 
+static int wm8731_check_osc(struct snd_soc_dapm_widget *source,
+                            struct snd_soc_dapm_widget *sink)
+{
+        struct wm8731_priv *wm8731 = snd_soc_codec_get_drvdata(source->codec);
+
+        return wm8731->sysclk_type == WM8731_SYSCLK_MCLK;
+}
+
 static const struct snd_soc_dapm_route intercon[] = {
+        {"DAC", NULL, "OSC", wm8731_check_osc},
+        {"ADC", NULL, "OSC", wm8731_check_osc},
+
         /* output mixer */
         {"Output Mixer", "Line Bypass Switch", "Line Input"},
         {"Output Mixer", "HiFi Playback Switch", "DAC"},
@@ -285,6 +298,15 @@ static int wm8731_set_dai_sysclk(struct snd_soc_dai *codec_dai,
         struct snd_soc_codec *codec = codec_dai->codec;
         struct wm8731_priv *wm8731 = snd_soc_codec_get_drvdata(codec);
 
+        switch (clk_id) {
+        case WM8731_SYSCLK_XTAL:
+        case WM8731_SYSCLK_MCLK:
+                wm8731->sysclk_type = clk_id;
+                break;
+        default:
+                return -EINVAL;
+        }
+
         switch (freq) {
         case 11289600:
         case 12000000:
@@ -292,9 +314,14 @@ static int wm8731_set_dai_sysclk(struct snd_soc_dai *codec_dai,
         case 16934400:
         case 18432000:
                 wm8731->sysclk = freq;
-                return 0;
+                break;
+        default:
+                return -EINVAL;
         }
-        return -EINVAL;
+
+        snd_soc_dapm_sync(codec);
+
+        return 0;
 }