-static const struct soc_enum wm8731_enum[] = {
- SOC_ENUM_SINGLE(WM8731_APANA, 2, 2, wm8731_input_select),
- SOC_ENUM_SINGLE(WM8731_APDIGI, 1, 4, wm8731_deemph),
-};
+static const struct soc_enum wm8731_insel_enum =
+ SOC_ENUM_SINGLE(WM8731_APANA, 2, 2, wm8731_input_select);
+
+static int wm8731_deemph[] = { 0, 32000, 44100, 48000 };
+
+static int wm8731_set_deemph(struct snd_soc_codec *codec)
+{
+ struct wm8731_priv *wm8731 = snd_soc_codec_get_drvdata(codec);
+ int val, i, best;
+
+ /* If we're using deemphasis select the nearest available sample
+ * rate.
+ */
+ if (wm8731->deemph) {
+ best = 1;
+ for (i = 2; i < ARRAY_SIZE(wm8731_deemph); i++) {
+ if (abs(wm8731_deemph[i] - wm8731->playback_fs) <
+ abs(wm8731_deemph[best] - wm8731->playback_fs))
+ best = i;
+ }
+
+ val = best << 1;
+ } else {
+ best = 0;
+ val = 0;
+ }
+
+ dev_dbg(codec->dev, "Set deemphasis %d (%dHz)\n",
+ best, wm8731_deemph[best]);
+
+ return snd_soc_update_bits(codec, WM8731_APDIGI, 0x6, val);
+}
+
+static int wm8731_get_deemph(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
+ struct wm8731_priv *wm8731 = snd_soc_codec_get_drvdata(codec);
+
+ ucontrol->value.enumerated.item[0] = wm8731->deemph;
+
+ return 0;
+}
+
+static int wm8731_put_deemph(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
+ struct wm8731_priv *wm8731 = snd_soc_codec_get_drvdata(codec);
+ int deemph = ucontrol->value.enumerated.item[0];
+ int ret = 0;
+
+ if (deemph > 1)
+ return -EINVAL;
+
+ mutex_lock(&codec->mutex);
+ if (wm8731->deemph != deemph) {
+ wm8731->deemph = deemph;
+
+ wm8731_set_deemph(codec);
+
+ ret = 1;
+ }
+ mutex_unlock(&codec->mutex);
+
+ return ret;
+}