ASoC: ak4642: Add support for extended sysclk frequencies of the ak4648

Additionally to the ak4642 pll frequencies the ak4648 also supports 13MHz,
19.2MHz and 26MHz. This adds support for these frequencies.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Mark Brown <broonie@linaro.org>

1 files changed, 20 insertions, 0 deletions

diff --git a/sound/soc/codecs/ak4642.c b/sound/soc/codecs/ak4642.c
index b568692a256b..3ba4c0f11418 100644
--- a/sound/soc/codecs/ak4642.c
+++ b/sound/soc/codecs/ak4642.c
@@ -136,6 +136,7 @@
 
 struct ak4642_drvdata {
         const struct regmap_config *regmap_config;
+        int extended_frequencies;
 };
 
 struct ak4642_priv {
@@ -297,7 +298,9 @@ static int ak4642_dai_set_sysclk(struct snd_soc_dai *codec_dai,
         int clk_id, unsigned int freq, int dir)
 {
         struct snd_soc_codec *codec = codec_dai->codec;
+        struct ak4642_priv *priv = snd_soc_codec_get_drvdata(codec);
         u8 pll;
+        int extended_freq = 0;
 
         switch (freq) {
         case 11289600:
@@ -318,9 +321,25 @@ static int ak4642_dai_set_sysclk(struct snd_soc_dai *codec_dai,
         case 27000000:
                 pll = PLL3 | PLL2 | PLL0;
                 break;
+        case 19200000:
+                pll = PLL3;
+                extended_freq = 1;
+                break;
+        case 13000000:
+                pll = PLL3 | PLL2 | PLL1;
+                extended_freq = 1;
+                break;
+        case 26000000:
+                pll = PLL3 | PLL2 | PLL1 | PLL0;
+                extended_freq = 1;
+                break;
         default:
                 return -EINVAL;
         }
+
+        if (extended_freq && !priv->drvdata->extended_frequencies)
+                return -EINVAL;
+
         snd_soc_update_bits(codec, MD_CTL1, PLL_MASK, pll);
 
         return 0;
@@ -525,6 +544,7 @@ static const struct ak4642_drvdata ak4643_drvdata = {
 
 static const struct ak4642_drvdata ak4648_drvdata = {
         .regmap_config = &ak4648_regmap,
+        .extended_frequencies = 1,
 };
 
 static struct of_device_id ak4642_of_match[];