redonkable/alistair23-linux
redonkable/alistair23-linux
1
0
Fork 0
Code Releases Activity

ASoC: arizona: Calculate OUTDIV first

Browse source 
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>
Signed-off-by: Mark Brown <broonie@linaro.org>
This commit is contained in:
Charles Keepax 2014-03-07 16:34:22 +00:00 committed by Mark Brown
parent 8ccefcd265
commit f641aec62c
1 changed files with 12 additions and 12 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

24
sound/soc/codecs/arizona.c
View file

@ -1415,6 +1415,18 @@ 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;
@ -1429,18 +1441,6 @@ 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) {