From: Bard Liao bardliao@realtek.com

This patch add ASRC support for rt5640 series codecs.

Signed-off-by: Bard Liao bardliao@realtek.com --- sound/soc/codecs/rt5640.c | 79 ++++++++++++++++++++++++++++++++++++++++++++++- sound/soc/codecs/rt5640.h | 2 ++ 2 files changed, 80 insertions(+), 1 deletion(-)

diff --git a/sound/soc/codecs/rt5640.c b/sound/soc/codecs/rt5640.c index 6bc6efd..3245ec4 100644 --- a/sound/soc/codecs/rt5640.c +++ b/sound/soc/codecs/rt5640.c @@ -341,6 +341,43 @@ static bool rt5640_readable_register(struct device *dev, unsigned int reg) } }

+static const char * const rt5640_asrc_mode[] = { + "disable", "enable" +}; + +static const SOC_ENUM_SINGLE_DECL(rt5640_asrc_enum, SND_SOC_NOPM, + 0, rt5640_asrc_mode); + +static int rt5640_asrc_put(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct snd_soc_codec *codec = snd_soc_kcontrol_codec(kcontrol); + struct rt5640_priv *rt5640 = snd_soc_codec_get_drvdata(codec); + + rt5640->asrc_en = ucontrol->value.integer.value[0]; + + if (rt5640->asrc_en) { + snd_soc_update_bits(codec, RT5640_DUMMY1, 0x70, 0x70); + snd_soc_update_bits(codec, RT5640_JD_CTRL, 0x3, 0x3); + } else { + snd_soc_update_bits(codec, RT5640_DUMMY1, 0x70, 0x0); + snd_soc_update_bits(codec, RT5640_JD_CTRL, 0x3, 0x0); + } + + return 0; +} + +static int rt5640_asrc_get(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct snd_soc_codec *codec = snd_soc_kcontrol_codec(kcontrol); + struct rt5640_priv *rt5640 = snd_soc_codec_get_drvdata(codec); + + ucontrol->value.enumerated.item[0] = rt5640->asrc_en; + + return 0; +} + static const DECLARE_TLV_DB_SCALE(out_vol_tlv, -4650, 150, 0); static const DECLARE_TLV_DB_SCALE(dac_vol_tlv, -65625, 375, 0); static const DECLARE_TLV_DB_SCALE(in_vol_tlv, -3450, 150, 0); @@ -436,6 +473,10 @@ static const struct snd_kcontrol_new rt5640_snd_controls[] = { SOC_ENUM("DAC IF1 Data Switch", rt5640_if1_dac_enum), SOC_ENUM("ADC IF2 Data Switch", rt5640_if2_adc_enum), SOC_ENUM("DAC IF2 Data Switch", rt5640_if2_dac_enum), + + /* ASRC */ + SOC_ENUM_EXT("ASRC Switch", rt5640_asrc_enum, + rt5640_asrc_get, rt5640_asrc_put), };

static const struct snd_kcontrol_new rt5640_specific_snd_controls[] = { @@ -1020,9 +1061,37 @@ static int rt5640_hp_post_event(struct snd_soc_dapm_widget *w, return 0; }

+static int rt5640_asrc_event(struct snd_soc_dapm_widget *w, + struct snd_kcontrol *kcontrol, int event) +{ + struct rt5640_priv *rt5640 = snd_soc_codec_get_drvdata(w->codec); + + if (!rt5640->asrc_en) + return 0; + + switch (event) { + case SND_SOC_DAPM_PRE_PMU: + snd_soc_write(w->codec, RT5640_ASRC_1, 0x9b00); + snd_soc_write(w->codec, RT5640_ASRC_2, 0xf800); + break; + case SND_SOC_DAPM_POST_PMD: + snd_soc_write(w->codec, RT5640_ASRC_1, 0x0); + snd_soc_write(w->codec, RT5640_ASRC_2, 0x0); + break; + default: + return 0; + } + + return 0; +} + static const struct snd_soc_dapm_widget rt5640_dapm_widgets[] = { SND_SOC_DAPM_SUPPLY("PLL1", RT5640_PWR_ANLG2, RT5640_PWR_PLL_BIT, 0, NULL, 0), + + SND_SOC_DAPM_SUPPLY_S("ASRC Function", 1, SND_SOC_NOPM, + 0, 0, rt5640_asrc_event, + SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD), /* Input Side */ /* micbias */ SND_SOC_DAPM_SUPPLY("LDO2", RT5640_PWR_ANLG1, @@ -1276,6 +1345,9 @@ static const struct snd_soc_dapm_widget rt5639_specific_dapm_widgets[] = { };

static const struct snd_soc_dapm_route rt5640_dapm_routes[] = { + {"I2S1", NULL, "ASRC Function"}, + {"I2S2", NULL, "ASRC Function"}, + {"IN1P", NULL, "LDO2"}, {"IN2P", NULL, "LDO2"},

@@ -1635,7 +1707,12 @@ static int rt5640_hw_params(struct snd_pcm_substream *substream, int dai_sel, pre_div, bclk_ms, frame_size;

rt5640->lrck[dai->id] = params_rate(params); - pre_div = rl6231_get_clk_info(rt5640->sysclk, rt5640->lrck[dai->id]); + if (rt5640->asrc_en) + pre_div = 0; + else + pre_div = rl6231_get_clk_info(rt5640->sysclk, + rt5640->lrck[dai->id]); + if (pre_div < 0) { dev_err(codec->dev, "Unsupported clock setting %d for DAI %d\n", rt5640->lrck[dai->id], dai->id); diff --git a/sound/soc/codecs/rt5640.h b/sound/soc/codecs/rt5640.h index 58ebe96..0b39178 100644 --- a/sound/soc/codecs/rt5640.h +++ b/sound/soc/codecs/rt5640.h @@ -2095,6 +2095,8 @@ struct rt5640_priv { int pll_out;

bool hp_mute; + + int asrc_en; };

#endif