diff options
| author | Peter Ujfalusi <peter.ujfalusi@ti.com> | 2014-04-04 14:31:45 +0300 |
|---|---|---|
| committer | Mark Brown <broonie@linaro.org> | 2014-04-14 17:24:24 +0100 |
| commit | ffd950f75dd71f13194b5d5c8ec67926a1996102 (patch) | |
| tree | b34d421c814369f6ca5b14bbeec7c2a3ff9bc211 /sound/soc/davinci | |
| parent | 83f12503bd1fb18d3fd460871660b34faf671918 (diff) | |
ASoC: davinci-mcasp: Add support for I2S format
The FS needs to be inverted in McASP compared to other supported formats.
Use a flag to indicate if the FS needs to be inverted.
At the same time fail when non supported format is asked since the default
case was anyways configuring McASP to a not valid format.
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
Diffstat (limited to 'sound/soc/davinci')
| -rw-r--r-- | sound/soc/davinci/davinci-mcasp.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/sound/soc/davinci/davinci-mcasp.c b/sound/soc/davinci/davinci-mcasp.c index 113e74c9479..d4d640004be 100644 --- a/sound/soc/davinci/davinci-mcasp.c +++ b/sound/soc/davinci/davinci-mcasp.c @@ -273,6 +273,7 @@ static int davinci_mcasp_set_dai_fmt(struct snd_soc_dai *cpu_dai, int ret = 0; u32 data_delay; bool fs_pol_rising; + bool inv_fs = false; pm_runtime_get_sync(mcasp->dev); switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { @@ -291,14 +292,19 @@ static int davinci_mcasp_set_dai_fmt(struct snd_soc_dai *cpu_dai, /* No delay after FS */ data_delay = 0; break; - default: + case SND_SOC_DAIFMT_I2S: /* configure a full-word SYNC pulse (LRCLK) */ mcasp_set_bits(mcasp, DAVINCI_MCASP_TXFMCTL_REG, FSXDUR); mcasp_set_bits(mcasp, DAVINCI_MCASP_RXFMCTL_REG, FSRDUR); /* 1st data bit occur one ACLK cycle after the frame sync */ data_delay = 1; + /* FS need to be inverted */ + inv_fs = true; break; + default: + ret = -EINVAL; + goto out; } mcasp_mod_bits(mcasp, DAVINCI_MCASP_TXFMT_REG, FSXDLY(data_delay), @@ -379,6 +385,9 @@ static int davinci_mcasp_set_dai_fmt(struct snd_soc_dai *cpu_dai, goto out; } + if (inv_fs) + fs_pol_rising = !fs_pol_rising; + if (fs_pol_rising) { mcasp_clr_bits(mcasp, DAVINCI_MCASP_TXFMCTL_REG, FSXPOL); mcasp_clr_bits(mcasp, DAVINCI_MCASP_RXFMCTL_REG, FSRPOL); |