diff options
Diffstat (limited to 'sound/soc/atmel/atmel_ssc_dai.c')
| -rw-r--r-- | sound/soc/atmel/atmel_ssc_dai.c | 54 |
1 files changed, 51 insertions, 3 deletions
diff --git a/sound/soc/atmel/atmel_ssc_dai.c b/sound/soc/atmel/atmel_ssc_dai.c index e13580d6c476..f3fdfa07fcb9 100644 --- a/sound/soc/atmel/atmel_ssc_dai.c +++ b/sound/soc/atmel/atmel_ssc_dai.c @@ -533,6 +533,49 @@ static int atmel_ssc_hw_params(struct snd_pcm_substream *substream, break; case SND_SOC_DAIFMT_DSP_A | SND_SOC_DAIFMT_CBM_CFM: + /* + * DSP/PCM Mode A format, CODEC supplies BCLK and LRC clocks. + * + * The SSC transmit clock is obtained from the BCLK signal on + * on the TK line, and the SSC receive clock is + * generated from the transmit clock. + * + * Data is transferred on first BCLK after LRC pulse rising + * edge.If stereo, the right channel data is contiguous with + * the left channel data. + */ + rcmr = SSC_BF(RCMR_PERIOD, 0) + | SSC_BF(RCMR_STTDLY, START_DELAY) + | SSC_BF(RCMR_START, SSC_START_RISING_RF) + | SSC_BF(RCMR_CKI, SSC_CKI_RISING) + | SSC_BF(RCMR_CKO, SSC_CKO_NONE) + | SSC_BF(RCMR_CKS, SSC_CKS_PIN); + + rfmr = SSC_BF(RFMR_FSEDGE, SSC_FSEDGE_POSITIVE) + | SSC_BF(RFMR_FSOS, SSC_FSOS_NONE) + | SSC_BF(RFMR_FSLEN, 0) + | 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, 0) + | SSC_BF(TCMR_STTDLY, START_DELAY) + | SSC_BF(TCMR_START, SSC_START_RISING_RF) + | SSC_BF(TCMR_CKI, SSC_CKI_FALLING) + | SSC_BF(TCMR_CKO, SSC_CKO_NONE) + | SSC_BF(TCMR_CKS, SSC_CKS_PIN); + + tfmr = SSC_BF(TFMR_FSEDGE, SSC_FSEDGE_POSITIVE) + | SSC_BF(TFMR_FSDEN, 0) + | SSC_BF(TFMR_FSOS, SSC_FSOS_NONE) + | SSC_BF(TFMR_FSLEN, 0) + | SSC_BF(TFMR_DATNB, (channels - 1)) + | SSC_BIT(TFMR_MSBF) + | SSC_BF(TFMR_DATDEF, 0) + | SSC_BF(TFMR_DATLEN, (bits - 1)); + break; + default: printk(KERN_WARNING "atmel_ssc_dai: unsupported DAI format 0x%x\n", ssc_p->daifmt); @@ -707,13 +750,18 @@ static struct snd_soc_dai_driver atmel_ssc_dai = { .ops = &atmel_ssc_dai_ops, }; +static const struct snd_soc_component_driver atmel_ssc_component = { + .name = "atmel-ssc", +}; + static int asoc_ssc_init(struct device *dev) { struct platform_device *pdev = to_platform_device(dev); struct ssc_device *ssc = platform_get_drvdata(pdev); int ret; - ret = snd_soc_register_dai(dev, &atmel_ssc_dai); + ret = snd_soc_register_component(dev, &atmel_ssc_component, + &atmel_ssc_dai, 1); if (ret) { dev_err(dev, "Could not register DAI: %d\n", ret); goto err; @@ -732,7 +780,7 @@ static int asoc_ssc_init(struct device *dev) return 0; err_unregister_dai: - snd_soc_unregister_dai(dev); + snd_soc_unregister_component(dev); err: return ret; } @@ -747,7 +795,7 @@ static void asoc_ssc_exit(struct device *dev) else atmel_pcm_pdc_platform_unregister(dev); - snd_soc_unregister_dai(dev); + snd_soc_unregister_component(dev); } /** |