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>

1 files changed, 1 insertions, 78 deletions

diff --git a/sound/soc/codecs/wm8903.c b/sound/soc/codecs/wm8903.c
index 542c7c4868ba..f9ae403715c6 100644
--- 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,