ASoC: Remove open coded symmetry implementation from WM8903

We're already flagged as using symmetric rates so we don't need to
have a custom implementation.

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

diff --git a/sound/soc/codecs/wm8903.c b/sound/soc/codecs/wm8903.c
index 542c7c4..f9ae403 100644 (file)
--- a/sound/soc/codecs/wm8903.c
+++ b/sound/soc/codecs/wm8903.c
@@ -218,10 +218,8 @@ struct wm8903_priv {
        int sysclk;
        int irq;
 
-       /* Reference counts */
+       /* Reference count */
        int class_w_users;
-       int playback_active;
-       int capture_active;
 
        struct completion wseq;
 
@@ -230,9 +228,6 @@ struct wm8903_priv {
        int mic_short;
        int mic_last_report;
        int mic_delay;
-
-       struct snd_pcm_substream *master_substream;
-       struct snd_pcm_substream *slave_substream;
 };
 
 static int wm8903_volatile_register(unsigned int reg)
@@ -1243,58 +1238,6 @@ static struct {
        { 0,      0 },
 };
 
-static int wm8903_startup(struct snd_pcm_substream *substream,
-                         struct snd_soc_dai *dai)
-{
-       struct snd_soc_pcm_runtime *rtd = substream->private_data;
-       struct snd_soc_codec *codec = rtd->codec;
-       struct wm8903_priv *wm8903 = snd_soc_codec_get_drvdata(codec);
-       struct snd_pcm_runtime *master_runtime;
-
-       if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
-               wm8903->playback_active++;
-       else
-               wm8903->capture_active++;
-
-       /* The DAI has shared clocks so if we already have a playback or
-        * capture going then constrain this substream to match it.
-        */
-       if (wm8903->master_substream) {
-               master_runtime = wm8903->master_substream->runtime;
-
-               dev_dbg(codec->dev, "Constraining to %d bits\n",
-                       master_runtime->sample_bits);
-
-               snd_pcm_hw_constraint_minmax(substream->runtime,
-                                            SNDRV_PCM_HW_PARAM_SAMPLE_BITS,
-                                            master_runtime->sample_bits,
-                                            master_runtime->sample_bits);
-
-               wm8903->slave_substream = substream;
-       } else
-               wm8903->master_substream = substream;
-
-       return 0;
-}
-
-static void wm8903_shutdown(struct snd_pcm_substream *substream,
-                           struct snd_soc_dai *dai)
-{
-       struct snd_soc_pcm_runtime *rtd = substream->private_data;
-       struct snd_soc_codec *codec = rtd->codec;
-       struct wm8903_priv *wm8903 = snd_soc_codec_get_drvdata(codec);
-
-       if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
-               wm8903->playback_active--;
-       else
-               wm8903->capture_active--;
-
-       if (wm8903->master_substream == substream)
-               wm8903->master_substream = wm8903->slave_substream;
-
-       wm8903->slave_substream = NULL;
-}
-
 static int wm8903_hw_params(struct snd_pcm_substream *substream,
                            struct snd_pcm_hw_params *params,
                            struct snd_soc_dai *dai)
@@ -1319,11 +1262,6 @@ static int wm8903_hw_params(struct snd_pcm_substream *substream,
        u16 clock1 = snd_soc_read(codec, WM8903_CLOCK_RATES_1);
        u16 dac_digital1 = snd_soc_read(codec, WM8903_DAC_DIGITAL_1);
 
-       if (substream == wm8903->slave_substream) {
-               dev_dbg(codec->dev, "Ignoring hw_params for slave substream\n");
-               return 0;
-       }
-
        /* Enable sloping stopband filter for low sample rates */
        if (fs <= 24000)
                dac_digital1 |= WM8903_DAC_SB_FILT;
@@ -1341,19 +1279,6 @@ static int wm8903_hw_params(struct snd_pcm_substream *substream,
                }
        }
 
-       /* Constraints should stop us hitting this but let's make sure */
-       if (wm8903->capture_active)
-               switch (sample_rates[dsp_config].rate) {
-               case 88200:
-               case 96000:
-                       dev_err(codec->dev, "%dHz unsupported by ADC\n",
-                               fs);
-                       return -EINVAL;
-
-               default:
-                       break;
-               }
-
        dev_dbg(codec->dev, "DSP fs = %dHz\n", sample_rates[dsp_config].rate);
        clock1 &= ~WM8903_SAMPLE_RATE_MASK;
        clock1 |= sample_rates[dsp_config].value;
@@ -1592,8 +1517,6 @@ static irqreturn_t wm8903_irq(int irq, void *data)
                        SNDRV_PCM_FMTBIT_S24_LE)
 
 static struct snd_soc_dai_ops wm8903_dai_ops = {
-       .startup        = wm8903_startup,
-       .shutdown       = wm8903_shutdown,
        .hw_params      = wm8903_hw_params,
        .digital_mute   = wm8903_digital_mute,
        .set_fmt        = wm8903_set_dai_fmt,