[PATCH 1/1] ASoC: sirf: usp: Add bitclock inversion support

[rongjun.ying@csr.com (Rongjun Ying)]

Signed-off-by: Rongjun Ying <rongjun.ying@csr.com>
---
 sound/soc/sirf/sirf-usp.c | 24 +++++++++++++++++++++++-
 1 file changed, 23 insertions(+), 1 deletion(-)

diff --git a/sound/soc/sirf/sirf-usp.c b/sound/soc/sirf/sirf-usp.c
index 3a73037..186dc7f 100644
--- a/sound/soc/sirf/sirf-usp.c
+++ b/sound/soc/sirf/sirf-usp.c
@@ -100,6 +100,16 @@ static int sirf_usp_pcm_set_dai_fmt(struct snd_soc_dai *dai,
 		return -EINVAL;
 	}
 
+	switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
+	case SND_SOC_DAIFMT_NB_NF:
+		break;
+	case SND_SOC_DAIFMT_IB_NF:
+		usp->daifmt_format |= (fmt & SND_SOC_DAIFMT_INV_MASK);
+		break;
+	default:
+		return -EINVAL;
+	}
+
 	return 0;
 }
 
@@ -177,7 +187,7 @@ static int sirf_usp_pcm_hw_params(struct snd_pcm_substream *substream,
 
 	shifter_len = data_len;
 
-	switch (usp->daifmt_format) {
+	switch (usp->daifmt_format & SND_SOC_DAIFMT_FORMAT_MASK) {
 	case SND_SOC_DAIFMT_I2S:
 		regmap_update_bits(usp->regmap, USP_RX_FRAME_CTRL,
 			USP_I2S_SYNC_CHG, USP_I2S_SYNC_CHG);
@@ -193,6 +203,18 @@ static int sirf_usp_pcm_hw_params(struct snd_pcm_substream *substream,
 		return -EINVAL;
 	}
 
+	switch (usp->daifmt_format & SND_SOC_DAIFMT_INV_MASK) {
+	case SND_SOC_DAIFMT_NB_NF:
+		break;
+	case SND_SOC_DAIFMT_IB_NF:
+		regmap_update_bits(usp->regmap, USP_MODE1,
+			USP_RXD_ACT_EDGE_FALLING | USP_TXD_ACT_EDGE_FALLING,
+			USP_RXD_ACT_EDGE_FALLING);
+		break;
+	default:
+		return -EINVAL;
+	}
+
 	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
 		regmap_update_bits(usp->regmap, USP_TX_FRAME_CTRL,
 			USP_TXC_DATA_LEN_MASK | USP_TXC_FRAME_LEN_MASK
-- 
2.0.4



Member of the CSR plc group of companies. CSR plc registered in England and Wales, registered number 4187346, registered office Churchill House, Cambridge Business Park, Cowley Road, Cambridge, CB4 0WZ, United Kingdom
More information can be found at www.csr.com. Keep up to date with CSR on our technical blog, www.csr.com/blog, CSR people blog, www.csr.com/people, YouTube, www.youtube.com/user/CSRplc, Facebook, www.facebook.com/pages/CSR/191038434253534, or follow us on Twitter at www.twitter.com/CSR_plc.
New for 2014, you can now access the wide range of products powered by aptX at www.aptx.com.