2 Dec
2012
2 Dec
'12
5:02 a.m.
On Fri, Nov 30, 2012 at 11:28:57AM +0100, Daniel Mack wrote:
- Note that this is not needed in case the clocks are stable
- throughout the entire runtime of the codec.
That's really quite rare for embeded systems, though - normally at least the LRCLK is going to be enabled only when there's audio.
+static int cs4271_startup(struct snd_pcm_substream *subs,
struct snd_soc_dai *codec_dai)+{
- int ret;
- struct snd_soc_codec *codec = codec_dai->codec;
- struct cs4271_private *cs4271 = snd_soc_codec_get_drvdata(codec);
- if (!cs4271->enable_soft_reset)
return 0;- /*
* Put the codec in soft reset and back again in case it's not* currently streaming data. This way of bringing the codec in* sync to the current clocks is not explicitly documented in* the data sheet, but it seems to work fine.*/
Since startup() is called before hw_params() you might well find even an active LRCLK is going to change underneath the driver here...