ASoC: Support 24.576MHz MCLKs in WM8915

We can safely divide these down to within the supported SYSCLK range.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Liam Girdwood <lrg@ti.com>

1 files changed, 5 insertions, 2 deletions

diff --git a/sound/soc/codecs/wm8915.c b/sound/soc/codecs/wm8915.c
index 083609418bf4..4a3c5cc77e55 100644
--- a/sound/soc/codecs/wm8915.c
+++ b/sound/soc/codecs/wm8915.c
@@ -1831,6 +1831,7 @@ static int wm8915_set_sysclk(struct snd_soc_dai *dai,
         struct snd_soc_codec *codec = dai->codec;
         struct wm8915_priv *wm8915 = snd_soc_codec_get_drvdata(codec);
         int lfclk = 0;
+        int ratediv = 0;
         int src;
         int old;
 
@@ -1862,6 +1863,8 @@ static int wm8915_set_sysclk(struct snd_soc_dai *dai,
                 snd_soc_update_bits(codec, WM8915_AIF_RATE,
                                     WM8915_SYSCLK_RATE, 0);
                 break;
+        case 24576000:
+                ratediv = WM8915_SYSCLK_DIV;
         case 12288000:
                 snd_soc_update_bits(codec, WM8915_AIF_RATE,
                                     WM8915_SYSCLK_RATE, WM8915_SYSCLK_RATE);
@@ -1877,8 +1880,8 @@ static int wm8915_set_sysclk(struct snd_soc_dai *dai,
         }
 
         snd_soc_update_bits(codec, WM8915_AIF_CLOCKING_1,
-                            WM8915_SYSCLK_SRC_MASK,
-                            src << WM8915_SYSCLK_SRC_SHIFT);
+                            WM8915_SYSCLK_SRC_MASK | WM8915_SYSCLK_DIV_MASK,
+                            src << WM8915_SYSCLK_SRC_SHIFT | ratediv);
         snd_soc_update_bits(codec, WM8915_CLOCKING_1, WM8915_LFCLK_ENA, lfclk);
         snd_soc_update_bits(codec, WM8915_AIF_CLOCKING_1,
                             WM8915_SYSCLK_ENA, old);