sound:wm8960:Supports playback at different sampling rates

Fixed I2S and wm8960 cannot continuous playback at
different sampling rates in 5 seconds.

Signed-off-by: Xingyu Wu <xingyu.wu@starfivetech.com>

diff --git a/sound/soc/codecs/wm8960.c b/sound/soc/codecs/wm8960.c
index c18f55e..a7acef8 100755 (executable)
--- a/sound/soc/codecs/wm8960.c
+++ b/sound/soc/codecs/wm8960.c
@@ -820,6 +820,7 @@ static int wm8960_hw_params(struct snd_pcm_substream *substream,
        int freq_out, freq_in;
        int i, j, k;
        u16 word_length = 0;
+       int ret;
 
        wm8960->bclk = snd_soc_params_to_bclk(params);
        if (params_channels(params) == 1)
@@ -956,8 +957,18 @@ static int wm8960_hw_params(struct snd_pcm_substream *substream,
 
        wm8960->is_stream_in_use[tx] = true;
 
-       if (!wm8960->is_stream_in_use[!tx])
-               return wm8960_configure_clocking(component);
+       if (!wm8960->is_stream_in_use[!tx]) {
+               ret = wm8960_configure_clocking(component);
+               if (ret)
+                       return ret;
+       }
+
+       if (tx) {
+               snd_soc_component_update_bits(component, WM8960_POWER3, 0xc, 0xc);
+               msleep(100);
+               snd_soc_component_update_bits(component, WM8960_POWER2, 0x1e0, 0x1e0);
+               msleep(100);
+       }
 
        return 0;
 }
@@ -969,6 +980,8 @@ static int wm8960_hw_free(struct snd_pcm_substream *substream,
        struct wm8960_priv *wm8960 = snd_soc_component_get_drvdata(component);
        bool tx = substream->stream == SNDRV_PCM_STREAM_PLAYBACK;
 
+       if (tx)
+               snd_soc_component_update_bits(component, WM8960_POWER2, 0x1e0, 0);
        wm8960->is_stream_in_use[tx] = false;
 
        return 0;
@@ -1013,6 +1026,8 @@ static int wm8960_set_bias_level_out3(struct snd_soc_component *component,
                        if (ret)
                                return ret;
 
+                       snd_soc_component_update_bits(component, WM8960_POWER3, 0xc, 0xc);
+                       msleep(100);
                        /* Set VMID to 2x50k */
                        snd_soc_component_update_bits(component, WM8960_POWER1, 0x180, 0x80);
                        break;