diff options
Diffstat (limited to 'sound/soc/codecs/wm8731.c')
| -rw-r--r-- | sound/soc/codecs/wm8731.c | 88 |
1 files changed, 79 insertions, 9 deletions
diff --git a/sound/soc/codecs/wm8731.c b/sound/soc/codecs/wm8731.c index a1041450d9bb..71122dc36826 100644 --- a/sound/soc/codecs/wm8731.c +++ b/sound/soc/codecs/wm8731.c @@ -46,6 +46,8 @@ struct wm8731_priv { u16 reg_cache[WM8731_CACHEREGNUM]; unsigned int sysclk; int sysclk_type; + int playback_fs; + bool deemph; }; @@ -64,16 +66,79 @@ static const u16 wm8731_reg[WM8731_CACHEREGNUM] = { #define wm8731_reset(c) snd_soc_write(c, WM8731_RESET, 0) static const char *wm8731_input_select[] = {"Line In", "Mic"}; -static const char *wm8731_deemph[] = {"None", "32Khz", "44.1Khz", "48Khz"}; -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; +} static const DECLARE_TLV_DB_SCALE(in_tlv, -3450, 150, 0); static const DECLARE_TLV_DB_SCALE(sidetone_tlv, -1500, 300, 0); static const DECLARE_TLV_DB_SCALE(out_tlv, -12100, 100, 1); +static const DECLARE_TLV_DB_SCALE(mic_tlv, 0, 2000, 0); static const struct snd_kcontrol_new wm8731_snd_controls[] = { @@ -86,7 +151,7 @@ SOC_DOUBLE_R_TLV("Capture Volume", WM8731_LINVOL, WM8731_RINVOL, 0, 31, 0, in_tlv), SOC_DOUBLE_R("Line Capture Switch", WM8731_LINVOL, WM8731_RINVOL, 7, 1, 1), -SOC_SINGLE("Mic Boost (+20dB)", WM8731_APANA, 0, 1, 0), +SOC_SINGLE_TLV("Mic Boost Volume", WM8731_APANA, 0, 1, 0, mic_tlv), SOC_SINGLE("Mic Capture Switch", WM8731_APANA, 1, 1, 1), SOC_SINGLE_TLV("Sidetone Playback Volume", WM8731_APANA, 6, 3, 1, @@ -95,7 +160,8 @@ SOC_SINGLE_TLV("Sidetone Playback Volume", WM8731_APANA, 6, 3, 1, SOC_SINGLE("ADC High Pass Filter Switch", WM8731_APDIGI, 0, 1, 1), SOC_SINGLE("Store DC Offset Switch", WM8731_APDIGI, 4, 1, 0), -SOC_ENUM("Playback De-emphasis", wm8731_enum[1]), +SOC_SINGLE_BOOL_EXT("Playback Deemphasis Switch", 0, + wm8731_get_deemph, wm8731_put_deemph), }; /* Output Mixer */ @@ -107,7 +173,7 @@ SOC_DAPM_SINGLE("HiFi Playback Switch", WM8731_APANA, 4, 1, 0), /* Input mux */ static const struct snd_kcontrol_new wm8731_input_mux_controls = -SOC_DAPM_ENUM("Input Select", wm8731_enum[0]); +SOC_DAPM_ENUM("Input Select", wm8731_insel_enum); static const struct snd_soc_dapm_widget wm8731_dapm_widgets[] = { SND_SOC_DAPM_SUPPLY("OSC", WM8731_PWR, 5, 1, NULL, 0), @@ -239,6 +305,8 @@ static int wm8731_hw_params(struct snd_pcm_substream *substream, u16 srate = (coeff_div[i].sr << 2) | (coeff_div[i].bosr << 1) | coeff_div[i].usb; + wm8731->playback_fs = params_rate(params); + snd_soc_write(codec, WM8731_SRATE, srate); /* bit size */ @@ -253,6 +321,8 @@ static int wm8731_hw_params(struct snd_pcm_substream *substream, break; } + wm8731_set_deemph(codec); + snd_soc_write(codec, WM8731_IFACE, iface); return 0; } @@ -526,7 +596,7 @@ static int wm8731_probe(struct snd_soc_codec *codec) snd_soc_update_bits(codec, WM8731_RINVOL, 0x100, 0); /* Disable bypass path by default */ - snd_soc_update_bits(codec, WM8731_APANA, 0x4, 0); + snd_soc_update_bits(codec, WM8731_APANA, 0x8, 0); snd_soc_add_controls(codec, wm8731_snd_controls, ARRAY_SIZE(wm8731_snd_controls)); |