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-rw-r--r--sound/soc/codecs/twl4030.c12
1 files changed, 9 insertions, 3 deletions
diff --git a/sound/soc/codecs/twl4030.c b/sound/soc/codecs/twl4030.c
index df474a5dd357..c53c7cabbd27 100644
--- a/sound/soc/codecs/twl4030.c
+++ b/sound/soc/codecs/twl4030.c
@@ -1608,9 +1608,15 @@ static int twl4030_hw_params(struct snd_pcm_substream *substream,
1608 1608
1609 /* If the substream has 4 channel, do the necessary setup */ 1609 /* If the substream has 4 channel, do the necessary setup */
1610 if (params_channels(params) == 4) { 1610 if (params_channels(params) == 4) {
1611 /* Safety check: are we in the correct operating mode? */ 1611 u8 format, mode;
1612 if ((twl4030_read_reg_cache(codec, TWL4030_REG_CODEC_MODE) & 1612
1613 TWL4030_OPTION_1)) 1613 format = twl4030_read_reg_cache(codec, TWL4030_REG_AUDIO_IF);
1614 mode = twl4030_read_reg_cache(codec, TWL4030_REG_CODEC_MODE);
1615
1616 /* Safety check: are we in the correct operating mode and
1617 * the interface is in TDM mode? */
1618 if ((mode & TWL4030_OPTION_1) &&
1619 ((format & TWL4030_AIF_FORMAT) == TWL4030_AIF_FORMAT_TDM))
1614 twl4030_tdm_enable(codec, substream->stream, 1); 1620 twl4030_tdm_enable(codec, substream->stream, 1);
1615 else 1621 else
1616 return -EINVAL; 1622 return -EINVAL;