ASoC: davinci-mcasp: dai format runtime reconfiguration
In case when the dai format is set via the dai_link the format
configuration happens once when the links are probed. If the McASP lose
context after this, the information will be lost and McASP will not going
to work correctly.
To overcome this issue, we save the fmt and set it within hw_params as
well.
Reported-by: Misael Lopez Cruz <misael.lopez@ti.com>
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Jyri Sarha <jsarha@ti.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
diff --git a/sound/soc/davinci/davinci-mcasp.c b/sound/soc/davinci/davinci-mcasp.c
index 3cf46af..e132498 100644
--- a/sound/soc/davinci/davinci-mcasp.c
+++ b/sound/soc/davinci/davinci-mcasp.c
@@ -77,6 +77,7 @@
u32 fifo_base;
struct device *dev;
struct snd_pcm_substream *substreams[2];
+ unsigned int dai_fmt;
/* McASP specific data */
int tdm_slots;
@@ -398,6 +399,9 @@
bool fs_pol_rising;
bool inv_fs = false;
+ if (!fmt)
+ return 0;
+
pm_runtime_get_sync(mcasp->dev);
switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
case SND_SOC_DAIFMT_DSP_A:
@@ -529,6 +533,8 @@
mcasp_set_bits(mcasp, DAVINCI_MCASP_TXFMCTL_REG, FSXPOL);
mcasp_set_bits(mcasp, DAVINCI_MCASP_RXFMCTL_REG, FSRPOL);
}
+
+ mcasp->dai_fmt = fmt;
out:
pm_runtime_put(mcasp->dev);
return ret;
@@ -1026,6 +1032,10 @@
int period_size = params_period_size(params);
int ret;
+ ret = davinci_mcasp_set_dai_fmt(cpu_dai, mcasp->dai_fmt);
+ if (ret)
+ return ret;
+
/*
* If mcasp is BCLK master, and a BCLK divider was not provided by
* the machine driver, we need to calculate the ratio.