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authorCharles Keepax <ckeepax@opensource.wolfsonmicro.com>2013-02-20 17:28:40 +0000
committerMark Brown <broonie@opensource.wolfsonmicro.com>2013-03-04 11:01:00 +0800
commitee929a9780605f21ad67a1ccb626baa41e038c1a (patch)
tree7f46c9218a20210e1fa8988d723af3c5ba90c0b2 /sound/soc/codecs/arizona.c
parentde1e6eedddeab2fa417c38c231d896198f903129 (diff)
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>
Diffstat (limited to 'sound/soc/codecs/arizona.c')
-rw-r--r--sound/soc/codecs/arizona.c39
1 files changed, 39 insertions, 0 deletions
diff --git a/sound/soc/codecs/arizona.c b/sound/soc/codecs/arizona.c
index 149e44f42f8..2bebfae3485 100644
--- a/sound/soc/codecs/arizona.c
+++ b/sound/soc/codecs/arizona.c
@@ -1139,6 +1139,45 @@ static void arizona_disable_fll(struct arizona_fll *fll)
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)
{