From: Mark Brown <broonie@opensource.wolfsonmicro.com>
Date: Tue, 17 Jan 2012 16:28:59 +0000 (+0000)
Subject: ASoC: Wait for WM8993 FLL to stabilise
X-Git-Tag: upstream/snapshot3+hdmi~8282^2
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=986b2f2c21b308e21160a40359b81370f8fee6ec;p=platform%2Fadaptation%2Frenesas_rcar%2Frenesas_kernel.git

ASoC: Wait for WM8993 FLL to stabilise

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

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
---

diff --git a/sound/soc/codecs/wm8993.c b/sound/soc/codecs/wm8993.c
index 2b40c93..7c7fd92 100644
--- a/sound/soc/codecs/wm8993.c
+++ b/sound/soc/codecs/wm8993.c
@@ -444,6 +444,12 @@ static int _wm8993_set_fll(struct snd_soc_codec *codec, int fll_id, int source,
 	/* Enable the FLL */
 	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);
 
 	wm8993->fll_fref = Fref;