ASoC: wm8996: Add 44.1kHz support

The WM8996 specification has been updated to specify 44.1kHz as a supported
sample rate. Update the driver to accept this configuration.

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

diff --git a/sound/soc/codecs/wm8996.c b/sound/soc/codecs/wm8996.c
index 40a124c..1fd6354 100644 (file)
--- a/sound/soc/codecs/wm8996.c
+++ b/sound/soc/codecs/wm8996.c
@@ -1914,7 +1914,7 @@ static int wm8996_hw_params(struct snd_pcm_substream *substream,
 {
        struct snd_soc_codec *codec = dai->codec;
        struct wm8996_priv *wm8996 = snd_soc_codec_get_drvdata(codec);
-       int bits, i, bclk_rate;
+       int bits, i, bclk_rate, best;
        int aifdata = 0;
        int lrclk = 0;
        int dsp = 0;
@@ -1963,14 +1963,11 @@ static int wm8996_hw_params(struct snd_pcm_substream *substream,
                return bits;
        aifdata |= (bits << WM8996_AIF1TX_WL_SHIFT) | bits;
 
+       best = 0;
        for (i = 0; i < ARRAY_SIZE(dsp_divs); i++) {
-               if (dsp_divs[i] == params_rate(params))
-                       break;
-       }
-       if (i == ARRAY_SIZE(dsp_divs)) {
-               dev_err(codec->dev, "Unsupported sample rate %dHz\n",
-                       params_rate(params));
-               return -EINVAL;
+               if (abs(dsp_divs[i] - params_rate(params)) <
+                   abs(dsp_divs[best] - params_rate(params)))
+                       best = i;
        }
        dsp |= i << dsp_shift;
 
@@ -2030,13 +2027,16 @@ static int wm8996_set_sysclk(struct snd_soc_dai *dai,
        }
 
        switch (wm8996->sysclk) {
+       case 5644800:
        case 6144000:
                snd_soc_update_bits(codec, WM8996_AIF_RATE,
                                    WM8996_SYSCLK_RATE, 0);
                break;
+       case 22579200:
        case 24576000:
                ratediv = WM8996_SYSCLK_DIV;
                wm8996->sysclk /= 2;
+       case 11289600:
        case 12288000:
                snd_soc_update_bits(codec, WM8996_AIF_RATE,
                                    WM8996_SYSCLK_RATE, WM8996_SYSCLK_RATE);
@@ -3060,7 +3060,8 @@ static struct snd_soc_codec_driver soc_codec_dev_wm8996 = {
 };
 
 #define WM8996_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_16000 |\
-                     SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_48000)
+                     SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 |\
+                     SNDRV_PCM_RATE_48000)
 #define WM8996_FORMATS (SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_S16_LE |\
                        SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S24_LE |\
                        SNDRV_PCM_FMTBIT_S32_LE)