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ASoC: Wait for WM8993 FLL to stabilise

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Ensure the FLL is locked before we return from set_fll().

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
Mark Brown 2012-01-17 16:28:59 +00:00
parent 675c496ba4
commit 986b2f2c21
1 changed files with 6 additions and 0 deletions
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6
sound/soc/codecs/wm8993.c
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@ -444,6 +444,12 @@ static int _wm8993_set_fll(struct snd_soc_codec *codec, int fll_id, int source,
/* Enable the FLL */ /* Enable the FLL */
snd_soc_write(codec, WM8993_FLL_CONTROL_1, reg1 | WM8993_FLL_ENA); snd_soc_write(codec, WM8993_FLL_CONTROL_1, reg1 | WM8993_FLL_ENA);
/* Both overestimates */
if (Fref < 1000000)
msleep(3);
else
msleep(1);
dev_dbg(codec->dev, "FLL enabled at %dHz->%dHz\n", Fref, Fout); dev_dbg(codec->dev, "FLL enabled at %dHz->%dHz\n", Fref, Fout);
wm8993->fll_fref = Fref; wm8993->fll_fref = Fref;