diff options
| author | Bastien Curutchet <bastien.curutchet@bootlin.com> | 2024-04-02 10:12:10 +0300 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2024-04-09 18:58:41 +0300 |
| commit | 091b440ffd7cb542fd45c39dddd56bd870f9e180 (patch) | |
| tree | c80c0b3a67761cf48c55916b4544aa74b30ab5b3 /sound/soc/ti | |
| parent | 94d57c541dbdd350a91baeee94d3f5148e1d4dd7 (diff) | |
| download | linux-091b440ffd7cb542fd45c39dddd56bd870f9e180.tar.xz | |
ASoC: ti: davinci-i2s: Link free-run mode to SND_SOC_DAIFMT_[GATED/CONT]
McBSP has free-running mode where serial clocks continue to run during
emulation halts. This mode is always enabled by the driver.
Set free-running mode when SND_SOC_DAIFMT_CONT is selected by DAI
format, unset it when SND_SOC_DAIFMT_GATED is selected.
Signed-off-by: Bastien Curutchet <bastien.curutchet@bootlin.com>
Acked-by: Peter Ujfalusi <peter.ujfalusi@gmail.com>
Link: https://msgid.link/r/20240402071213.11671-11-bastien.curutchet@bootlin.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'sound/soc/ti')
| -rw-r--r-- | sound/soc/ti/davinci-i2s.c | 22 |
1 files changed, 20 insertions, 2 deletions
diff --git a/sound/soc/ti/davinci-i2s.c b/sound/soc/ti/davinci-i2s.c index 82a0dfa07cec..7fb41987175b 100644 --- a/sound/soc/ti/davinci-i2s.c +++ b/sound/soc/ti/davinci-i2s.c @@ -280,6 +280,7 @@ static int davinci_i2s_set_dai_fmt(struct snd_soc_dai *cpu_dai, { struct davinci_mcbsp_dev *dev = snd_soc_dai_get_drvdata(cpu_dai); unsigned int pcr; + unsigned int spcr; unsigned int srgr; bool inv_fs = false; /* Attention srgr is updated by hw_params! */ @@ -288,6 +289,23 @@ static int davinci_i2s_set_dai_fmt(struct snd_soc_dai *cpu_dai, DAVINCI_MCBSP_SRGR_FWID(DEFAULT_BITPERSAMPLE - 1); dev->fmt = fmt; + + spcr = davinci_mcbsp_read_reg(dev, DAVINCI_MCBSP_SPCR_REG); + switch (fmt & SND_SOC_DAIFMT_CLOCK_MASK) { + case SND_SOC_DAIFMT_CONT: + spcr |= DAVINCI_MCBSP_SPCR_FREE; + dev_dbg(dev->dev, "Free-running mode ON\n"); + break; + case SND_SOC_DAIFMT_GATED: + spcr &= ~DAVINCI_MCBSP_SPCR_FREE; + dev_dbg(dev->dev, "Free-running mode OFF\n"); + break; + default: + dev_err(dev->dev, "Invalid clock gating\n"); + return -EINVAL; + } + davinci_mcbsp_write_reg(dev, DAVINCI_MCBSP_SPCR_REG, spcr); + /* set master/slave audio interface */ switch (fmt & SND_SOC_DAIFMT_CLOCK_PROVIDER_MASK) { case SND_SOC_DAIFMT_BP_FP: @@ -452,10 +470,10 @@ static int davinci_i2s_hw_params(struct snd_pcm_substream *substream, /* general line settings */ spcr = davinci_mcbsp_read_reg(dev, DAVINCI_MCBSP_SPCR_REG); if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) { - spcr |= DAVINCI_MCBSP_SPCR_RINTM(3) | DAVINCI_MCBSP_SPCR_FREE; + spcr |= DAVINCI_MCBSP_SPCR_RINTM(3); davinci_mcbsp_write_reg(dev, DAVINCI_MCBSP_SPCR_REG, spcr); } else { - spcr |= DAVINCI_MCBSP_SPCR_XINTM(3) | DAVINCI_MCBSP_SPCR_FREE; + spcr |= DAVINCI_MCBSP_SPCR_XINTM(3); davinci_mcbsp_write_reg(dev, DAVINCI_MCBSP_SPCR_REG, spcr); } |