diff options
Diffstat (limited to 'sound/soc/codecs/tlv320dac33.c')
| -rw-r--r-- | sound/soc/codecs/tlv320dac33.c | 35 |
1 files changed, 34 insertions, 1 deletions
diff --git a/sound/soc/codecs/tlv320dac33.c b/sound/soc/codecs/tlv320dac33.c index c684aa2..bc35f3f 100644 --- a/sound/soc/codecs/tlv320dac33.c +++ b/sound/soc/codecs/tlv320dac33.c @@ -62,6 +62,7 @@ enum dac33_state { enum dac33_fifo_modes { DAC33_FIFO_BYPASS = 0, DAC33_FIFO_MODE1, + DAC33_FIFO_MODE7, DAC33_FIFO_LAST_MODE, }; @@ -422,7 +423,7 @@ static int dac33_set_fifo_mode(struct snd_kcontrol *kcontrol, /* Codec operation modes */ static const char *dac33_fifo_mode_texts[] = { - "Bypass", "Mode 1" + "Bypass", "Mode 1", "Mode 7" }; static const struct soc_enum dac33_fifo_mode_enum = @@ -556,6 +557,10 @@ static inline void dac33_prefill_handler(struct tlv320dac33_priv *dac33) dac33_write16(codec, DAC33_PREFILL_MSB, DAC33_THRREG(dac33->alarm_threshold)); break; + case DAC33_FIFO_MODE7: + dac33_write16(codec, DAC33_PREFILL_MSB, + DAC33_THRREG(20)); + break; default: dev_warn(codec->dev, "Unhandled FIFO mode: %d\n", dac33->fifo_mode); @@ -574,6 +579,9 @@ static inline void dac33_playback_handler(struct tlv320dac33_priv *dac33) dac33_write16(codec, DAC33_NSAMPLE_MSB, DAC33_THRREG(dac33->nsample)); break; + case DAC33_FIFO_MODE7: + /* At the moment we are not using interrupts in mode7 */ + break; default: dev_warn(codec->dev, "Unhandled FIFO mode: %d\n", dac33->fifo_mode); @@ -788,6 +796,10 @@ static int dac33_prepare_chip(struct snd_pcm_substream *substream) DAC33_ATM(DAC33_FIFO_IRQ_MODE_LEVEL)); dac33_write(codec, DAC33_FIFO_IRQ_MASK, DAC33_MAT); break; + case DAC33_FIFO_MODE7: + /* Disable all interrupts */ + dac33_write(codec, DAC33_FIFO_IRQ_MASK, 0); + break; default: /* in FIFO bypass mode, the interrupts are not used */ break; @@ -807,6 +819,17 @@ static int dac33_prepare_chip(struct snd_pcm_substream *substream) fifoctrl_a &= ~DAC33_FAUTO; aictrl_b &= ~DAC33_BCLKON; break; + case DAC33_FIFO_MODE7: + /* + * For mode1: + * Disable the FIFO bypass (Enable the use of FIFO) + * Select Threshold mode + * BCLK is only running when data is needed by DAC33 + */ + fifoctrl_a &= ~DAC33_FBYPAS; + fifoctrl_a |= DAC33_FAUTO; + aictrl_b &= ~DAC33_BCLKON; + break; default: /* * For FIFO bypass mode: @@ -830,6 +853,16 @@ static int dac33_prepare_chip(struct snd_pcm_substream *substream) dac33_write16(codec, DAC33_ATHR_MSB, DAC33_THRREG(dac33->alarm_threshold)); break; + case DAC33_FIFO_MODE7: + /* + * Configure the threshold levels, and leave 10 sample space + * at the bottom, and also at the top of the FIFO + */ + dac33_write16(codec, DAC33_UTHR_MSB, + DAC33_THRREG(DAC33_BUFFER_SIZE_SAMPLES - 10)); + dac33_write16(codec, DAC33_LTHR_MSB, + DAC33_THRREG(10)); + break; default: /* BYPASS mode */ dac33_write(codec, DAC33_SER_AUDIOIF_CTRL_C, 32); |