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[6/9] ASoC: arizona: Calculate OUTDIV first

Message ID 1394210065-23941-7-git-send-email-ckeepax@opensource.wolfsonmicro.com (mailing list archive)
State Accepted
Commit f641aec62c948c7754429136ad176824fbb97238
Headers show

Commit Message

Charles Keepax March 7, 2014, 4:34 p.m. UTC 
OUTDIV will remain unchanged whilst the rest of the FLL configuration is
calculated so do this first.

Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
---
 sound/soc/codecs/arizona.c |   24 ++++++++++++------------
 1 files changed, 12 insertions(+), 12 deletions(-)
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Patch

diff --git a/sound/soc/codecs/arizona.c b/sound/soc/codecs/arizona.c
index e9488cd..175e230 100644
--- a/sound/soc/codecs/arizona.c
+++ b/sound/soc/codecs/arizona.c
@@ -1424,6 +1424,18 @@  static int arizona_calc_fll(struct arizona_fll *fll,
 
 	arizona_fll_dbg(fll, "Fref=%u Fout=%u\n", Fref, fll->fout);
 
+	/* Fvco should be over the targt; don't check the upper bound */
+	div = ARIZONA_FLL_MIN_OUTDIV;
+	while (fll->fout * div < ARIZONA_FLL_MIN_FVCO * fll->vco_mult) {
+		div++;
+		if (div > ARIZONA_FLL_MAX_OUTDIV)
+			return -EINVAL;
+	}
+	target = fll->fout * div / fll->vco_mult;
+	cfg->outdiv = div;
+
+	arizona_fll_dbg(fll, "Fvco=%dHz\n", target);
+
 	/* Fref must be <=13.5MHz */
 	div = 1;
 	cfg->refdiv = 0;
@@ -1438,18 +1450,6 @@  static int arizona_calc_fll(struct arizona_fll *fll,
 	/* Apply the division for our remaining calculations */
 	Fref /= div;
 
-	/* Fvco should be over the targt; don't check the upper bound */
-	div = ARIZONA_FLL_MIN_OUTDIV;
-	while (fll->fout * div < ARIZONA_FLL_MIN_FVCO * fll->vco_mult) {
-		div++;
-		if (div > ARIZONA_FLL_MAX_OUTDIV)
-			return -EINVAL;
-	}
-	target = fll->fout * div / fll->vco_mult;
-	cfg->outdiv = div;
-
-	arizona_fll_dbg(fll, "Fvco=%dHz\n", target);
-
 	/* Find an appropraite FLL_FRATIO and factor it out of the target */
 	for (i = 0; i < ARRAY_SIZE(fll_fratios); i++) {
 		if (fll_fratios[i].min <= Fref && Fref <= fll_fratios[i].max) {