ASoC: arizona: Add support for directly setting the FLL REFCLK
This patch allows the REFCLK to be set directly allowing much greater
flexibility in how the FLLs are configured.
Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
diff --git a/sound/soc/codecs/arizona.c b/sound/soc/codecs/arizona.c
index 149e44f..2bebfae 100644
--- a/sound/soc/codecs/arizona.c
+++ b/sound/soc/codecs/arizona.c
@@ -1139,6 +1139,45 @@
pm_runtime_put_autosuspend(arizona->dev);
}
+int arizona_set_fll_refclk(struct arizona_fll *fll, int source,
+ unsigned int Fref, unsigned int Fout)
+{
+ struct arizona_fll_cfg ref, sync;
+ int ret;
+
+ if (source < 0)
+ return -EINVAL;
+
+ if (fll->ref_src == source && fll->ref_freq == Fref &&
+ fll->fout == Fout)
+ return 0;
+
+ if (Fout) {
+ ret = arizona_calc_fll(fll, &ref, Fref, Fout);
+ if (ret != 0)
+ return ret;
+
+ if (fll->sync_src >= 0) {
+ ret = arizona_calc_fll(fll, &sync, fll->sync_freq, Fout);
+ if (ret != 0)
+ return ret;
+ }
+ }
+
+ fll->ref_src = source;
+ fll->ref_freq = Fref;
+ fll->fout = Fout;
+
+ if (Fout) {
+ arizona_enable_fll(fll, &ref, &sync);
+ } else {
+ arizona_disable_fll(fll);
+ }
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(arizona_set_fll_refclk);
+
int arizona_set_fll(struct arizona_fll *fll, int source,
unsigned int Fref, unsigned int Fout)
{