diff options
| author | Peter Rosin <peda@axentia.se> | 2015-01-29 11:16:29 +0100 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2015-01-30 13:29:04 +0100 |
| commit | eb5271497f212f9e2323adc0a2fd8a9358e751e4 (patch) | |
| tree | 8ac69077046a49d325e5a0c064078cebdd2a718a /sound/soc/atmel/atmel_ssc_dai.c | |
| parent | 67d1aed0a5de49dfbc81315610a4fd49c864ec45 (diff) | |
ASoC: atmel_ssc_dai: Support SND_SOC_DAIFMT_CBM_CFS on I2S
Signed-off-by: Peter Rosin <peda@axentia.se>
Acked-by: Bo Shen <voice.shen@atmel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'sound/soc/atmel/atmel_ssc_dai.c')
| -rw-r--r-- | sound/soc/atmel/atmel_ssc_dai.c | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/sound/soc/atmel/atmel_ssc_dai.c b/sound/soc/atmel/atmel_ssc_dai.c index 3cd70597d109..f55f3aab8bdd 100644 --- a/sound/soc/atmel/atmel_ssc_dai.c +++ b/sound/soc/atmel/atmel_ssc_dai.c @@ -485,6 +485,54 @@ static int atmel_ssc_hw_params(struct snd_pcm_substream *substream, | SSC_BF(TFMR_DATLEN, (bits - 1)); break; + case SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_CBM_CFS: + /* I2S format, CODEC supplies BCLK, SSC supplies LRCLK. */ + if (bits > 16 && !ssc->pdata->has_fslen_ext) { + dev_err(dai->dev, + "sample size %d is too large for SSC device\n", + bits); + return -EINVAL; + } + + fslen_ext = (bits - 1) / 16; + fslen = (bits - 1) % 16; + + rcmr = SSC_BF(RCMR_PERIOD, ssc_p->rcmr_period) + | SSC_BF(RCMR_STTDLY, START_DELAY) + | SSC_BF(RCMR_START, SSC_START_FALLING_RF) + | SSC_BF(RCMR_CKI, SSC_CKI_RISING) + | SSC_BF(RCMR_CKO, SSC_CKO_NONE) + | SSC_BF(RCMR_CKS, ssc->clk_from_rk_pin ? + SSC_CKS_PIN : SSC_CKS_CLOCK); + + rfmr = SSC_BF(RFMR_FSLEN_EXT, fslen_ext) + | SSC_BF(RFMR_FSEDGE, SSC_FSEDGE_POSITIVE) + | SSC_BF(RFMR_FSOS, SSC_FSOS_NEGATIVE) + | SSC_BF(RFMR_FSLEN, fslen) + | SSC_BF(RFMR_DATNB, (channels - 1)) + | SSC_BIT(RFMR_MSBF) + | SSC_BF(RFMR_LOOP, 0) + | SSC_BF(RFMR_DATLEN, (bits - 1)); + + tcmr = SSC_BF(TCMR_PERIOD, ssc_p->tcmr_period) + | SSC_BF(TCMR_STTDLY, START_DELAY) + | SSC_BF(TCMR_START, SSC_START_FALLING_RF) + | SSC_BF(TCMR_CKI, SSC_CKI_FALLING) + | SSC_BF(TCMR_CKO, SSC_CKO_NONE) + | SSC_BF(TCMR_CKS, ssc->clk_from_rk_pin ? + SSC_CKS_CLOCK : SSC_CKS_PIN); + + tfmr = SSC_BF(TFMR_FSLEN_EXT, fslen_ext) + | SSC_BF(TFMR_FSEDGE, SSC_FSEDGE_NEGATIVE) + | SSC_BF(TFMR_FSDEN, 0) + | SSC_BF(TFMR_FSOS, SSC_FSOS_NEGATIVE) + | SSC_BF(TFMR_FSLEN, fslen) + | SSC_BF(TFMR_DATNB, (channels - 1)) + | SSC_BIT(TFMR_MSBF) + | SSC_BF(TFMR_DATDEF, 0) + | SSC_BF(TFMR_DATLEN, (bits - 1)); + break; + case SND_SOC_DAIFMT_DSP_A | SND_SOC_DAIFMT_CBS_CFS: /* * DSP/PCM Mode A format, SSC provides BCLK and LRC clocks. |