diff options
| -rw-r--r-- | sound/soc/codecs/tlv320aic3x.c | 62 | ||||
| -rw-r--r-- | sound/soc/codecs/tlv320aic3x.h | 1 |
2 files changed, 60 insertions, 3 deletions
diff --git a/sound/soc/codecs/tlv320aic3x.c b/sound/soc/codecs/tlv320aic3x.c index f7c2a575a892..8770e28e53a4 100644 --- a/sound/soc/codecs/tlv320aic3x.c +++ b/sound/soc/codecs/tlv320aic3x.c @@ -78,6 +78,8 @@ struct aic3x_priv { struct aic3x_disable_nb disable_nb[AIC3X_NUM_SUPPLIES]; struct aic3x_setup_data *setup; unsigned int sysclk; + unsigned int dai_fmt; + unsigned int tdm_delay; struct list_head list; int master; int gpio_reset; @@ -1009,6 +1011,25 @@ found: return 0; } +static int aic3x_prepare(struct snd_pcm_substream *substream, + struct snd_soc_dai *dai) +{ + struct snd_soc_codec *codec = dai->codec; + struct aic3x_priv *aic3x = snd_soc_codec_get_drvdata(codec); + int delay = 0; + + /* TDM slot selection only valid in DSP_A/_B mode */ + if (aic3x->dai_fmt == SND_SOC_DAIFMT_DSP_A) + delay += (aic3x->tdm_delay + 1); + else if (aic3x->dai_fmt == SND_SOC_DAIFMT_DSP_B) + delay += aic3x->tdm_delay; + + /* Configure data delay */ + snd_soc_write(codec, AIC3X_ASD_INTF_CTRLC, aic3x->tdm_delay); + + return 0; +} + static int aic3x_mute(struct snd_soc_dai *dai, int mute) { struct snd_soc_codec *codec = dai->codec; @@ -1048,7 +1069,6 @@ static int aic3x_set_dai_fmt(struct snd_soc_dai *codec_dai, struct snd_soc_codec *codec = codec_dai->codec; struct aic3x_priv *aic3x = snd_soc_codec_get_drvdata(codec); u8 iface_areg, iface_breg; - int delay = 0; iface_areg = snd_soc_read(codec, AIC3X_ASD_INTF_CTRLA) & 0x3f; iface_breg = snd_soc_read(codec, AIC3X_ASD_INTF_CTRLB) & 0x3f; @@ -1076,7 +1096,6 @@ static int aic3x_set_dai_fmt(struct snd_soc_dai *codec_dai, case (SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF): break; case (SND_SOC_DAIFMT_DSP_A | SND_SOC_DAIFMT_IB_NF): - delay = 1; case (SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_IB_NF): iface_breg |= (0x01 << 6); break; @@ -1090,10 +1109,45 @@ static int aic3x_set_dai_fmt(struct snd_soc_dai *codec_dai, return -EINVAL; } + aic3x->dai_fmt = fmt & SND_SOC_DAIFMT_FORMAT_MASK; + /* set iface */ snd_soc_write(codec, AIC3X_ASD_INTF_CTRLA, iface_areg); snd_soc_write(codec, AIC3X_ASD_INTF_CTRLB, iface_breg); - snd_soc_write(codec, AIC3X_ASD_INTF_CTRLC, delay); + + return 0; +} + +static int aic3x_set_dai_tdm_slot(struct snd_soc_dai *codec_dai, + unsigned int tx_mask, unsigned int rx_mask, + int slots, int slot_width) +{ + struct snd_soc_codec *codec = codec_dai->codec; + struct aic3x_priv *aic3x = snd_soc_codec_get_drvdata(codec); + unsigned int lsb; + + if (tx_mask != rx_mask) { + dev_err(codec->dev, "tx and rx masks must be symmetric\n"); + return -EINVAL; + } + + if (unlikely(!tx_mask)) { + dev_err(codec->dev, "tx and rx masks need to be non 0\n"); + return -EINVAL; + } + + /* TDM based on DSP mode requires slots to be adjacent */ + lsb = __ffs(tx_mask); + if ((lsb + 1) != __fls(tx_mask)) { + dev_err(codec->dev, "Invalid mask, slots must be adjacent\n"); + return -EINVAL; + } + + aic3x->tdm_delay = lsb * slot_width; + + /* DOUT in high-impedance on inactive bit clocks */ + snd_soc_update_bits(codec, AIC3X_ASD_INTF_CTRLA, + DOUT_TRISTATE, DOUT_TRISTATE); return 0; } @@ -1212,9 +1266,11 @@ static int aic3x_set_bias_level(struct snd_soc_codec *codec, static const struct snd_soc_dai_ops aic3x_dai_ops = { .hw_params = aic3x_hw_params, + .prepare = aic3x_prepare, .digital_mute = aic3x_mute, .set_sysclk = aic3x_set_dai_sysclk, .set_fmt = aic3x_set_dai_fmt, + .set_tdm_slot = aic3x_set_dai_tdm_slot, }; static struct snd_soc_dai_driver aic3x_dai = { diff --git a/sound/soc/codecs/tlv320aic3x.h b/sound/soc/codecs/tlv320aic3x.h index e521ac3ddde8..89fa692df206 100644 --- a/sound/soc/codecs/tlv320aic3x.h +++ b/sound/soc/codecs/tlv320aic3x.h @@ -169,6 +169,7 @@ /* Audio serial data interface control register A bits */ #define BIT_CLK_MASTER 0x80 #define WORD_CLK_MASTER 0x40 +#define DOUT_TRISTATE 0x20 /* Codec Datapath setup register 7 */ #define FSREF_44100 (1 << 7) |