ASoC: arizona: Suppress noop FLL updates
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
diff --git a/sound/soc/codecs/arizona.c b/sound/soc/codecs/arizona.c
index 500e6cb..d497643 100644
--- a/sound/soc/codecs/arizona.c
+++ b/sound/soc/codecs/arizona.c
@@ -937,6 +937,9 @@
bool ena;
int ret;
+ if (fll->fref == Fref && fll->fout == Fout)
+ return 0;
+
ret = regmap_read(arizona->regmap, fll->base + 1, ®);
if (ret != 0) {
arizona_fll_err(fll, "Failed to read current state: %d\n",
@@ -1014,6 +1017,9 @@
if (ret == 0)
arizona_fll_warn(fll, "Timed out waiting for lock\n");
+ fll->fref = Fref;
+ fll->fout = Fout;
+
return 0;
}
EXPORT_SYMBOL_GPL(arizona_set_fll);
diff --git a/sound/soc/codecs/arizona.h b/sound/soc/codecs/arizona.h
index f1c0ec9..84c415d 100644
--- a/sound/soc/codecs/arizona.h
+++ b/sound/soc/codecs/arizona.h
@@ -191,6 +191,8 @@
unsigned int vco_mult;
struct completion lock;
struct completion ok;
+ unsigned int fref;
+ unsigned int fout;
char lock_name[ARIZONA_FLL_NAME_LEN];
char clock_ok_name[ARIZONA_FLL_NAME_LEN];