From: Naresh Medisetty <[EMAIL PROTECTED]>
Fix concurrent capture/playback issue.
The issue is caused by re-initialization of control registers used specifically
for capture or playback in both capture and playback operations.
Signed-off-by: Steve Chen <[EMAIL PROTECTED]>
Naresh Medisetty <[EMAIL PROTECTED]>
---
sound/soc/davinci/davinci-i2s.c | 31 +++++++++++++++++++------------
1 files changed, 19 insertions(+), 12 deletions(-)
diff --git a/sound/soc/davinci/davinci-i2s.c b/sound/soc/davinci/davinci-i2s.c
index 8c1bf87..11c20d0 100644
--- a/sound/soc/davinci/davinci-i2s.c
+++ b/sound/soc/davinci/davinci-i2s.c
@@ -295,10 +295,14 @@ static int davinci_i2s_hw_params(struct snd_pcm_substream
*substream,
u32 w;
/* general line settings */
- davinci_mcbsp_write_reg(dev, DAVINCI_MCBSP_SPCR_REG,
- DAVINCI_MCBSP_SPCR_RINTM(3) |
- DAVINCI_MCBSP_SPCR_XINTM(3) |
- DAVINCI_MCBSP_SPCR_FREE);
+ w = davinci_mcbsp_read_reg(dev, DAVINCI_MCBSP_SPCR_REG);
+ if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) {
+ w |= DAVINCI_MCBSP_SPCR_RINTM(3) | DAVINCI_MCBSP_SPCR_FREE;
+ davinci_mcbsp_write_reg(dev, DAVINCI_MCBSP_SPCR_REG, w);
+ } else {
+ w |= DAVINCI_MCBSP_SPCR_XINTM(3) | DAVINCI_MCBSP_SPCR_FREE;
+ davinci_mcbsp_write_reg(dev, DAVINCI_MCBSP_SPCR_REG, w);
+ }
i = hw_param_interval(params, SNDRV_PCM_HW_PARAM_SAMPLE_BITS);
w = davinci_mcbsp_read_reg(dev, DAVINCI_MCBSP_SRGR_REG);
@@ -329,16 +333,19 @@ static int davinci_i2s_hw_params(struct snd_pcm_substream
*substream,
return -EINVAL;
}
- w = davinci_mcbsp_read_reg(dev, DAVINCI_MCBSP_RCR_REG);
- MOD_REG_BIT(w, DAVINCI_MCBSP_RCR_RWDLEN1(mcbsp_word_length) |
- DAVINCI_MCBSP_RCR_RWDLEN2(mcbsp_word_length), 1);
- davinci_mcbsp_write_reg(dev, DAVINCI_MCBSP_RCR_REG, w);
+ if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) {
+ w = davinci_mcbsp_read_reg(dev, DAVINCI_MCBSP_RCR_REG);
+ MOD_REG_BIT(w, DAVINCI_MCBSP_RCR_RWDLEN1(mcbsp_word_length) |
+ DAVINCI_MCBSP_RCR_RWDLEN2(mcbsp_word_length), 1);
+ davinci_mcbsp_write_reg(dev, DAVINCI_MCBSP_RCR_REG, w);
- w = davinci_mcbsp_read_reg(dev, DAVINCI_MCBSP_XCR_REG);
- MOD_REG_BIT(w, DAVINCI_MCBSP_XCR_XWDLEN1(mcbsp_word_length) |
- DAVINCI_MCBSP_XCR_XWDLEN2(mcbsp_word_length), 1);
- davinci_mcbsp_write_reg(dev, DAVINCI_MCBSP_XCR_REG, w);
+ } else {
+ w = davinci_mcbsp_read_reg(dev, DAVINCI_MCBSP_XCR_REG);
+ MOD_REG_BIT(w, DAVINCI_MCBSP_XCR_XWDLEN1(mcbsp_word_length) |
+ DAVINCI_MCBSP_XCR_XWDLEN2(mcbsp_word_length), 1);
+ davinci_mcbsp_write_reg(dev, DAVINCI_MCBSP_XCR_REG, w);
+ }
return 0;
}
--
1.5.4.1
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