From: Emanuele Ghidoli <emanuele.ghidoli@xxxxxxxxxxx>
Allow configuring the two loudspeaker outputs as a
single Bridge Tied Load output getting higher output power.
Signed-off-by: Emanuele Ghidoli <emanuele.ghidoli@xxxxxxxxxxx>
Signed-off-by: Francesco Dolcini <francesco.dolcini@xxxxxxxxxxx>
---
sound/soc/codecs/nau8822.c | 9 +++++++++
sound/soc/codecs/nau8822.h | 9 +++++++++
2 files changed, 18 insertions(+)
diff --git a/sound/soc/codecs/nau8822.c b/sound/soc/codecs/nau8822.c
index 1aef281a9972..d5006d8de639 100644
--- a/sound/soc/codecs/nau8822.c
+++ b/sound/soc/codecs/nau8822.c
@@ -1056,6 +1056,7 @@ static const int update_reg[] = {
static int nau8822_probe(struct snd_soc_component *component)
{
int i;
+ struct device_node *of_node = component->dev->of_node;
/*
* Set the update bit in all registers, that have one. This way all
@@ -1066,6 +1067,14 @@ static int nau8822_probe(struct snd_soc_component *component)
snd_soc_component_update_bits(component,
update_reg[i], 0x100, 0x100);
+ /* Check property to configure the two loudspeaker outputs as
+ * a single Bridge Tied Load output
+ */
+ if (of_property_read_bool(of_node, "nuvoton,spk-btl"))
+ snd_soc_component_update_bits(component,
+ NAU8822_REG_RIGHT_SPEAKER_CONTROL,
+ NAU8822_RSUBBYP, NAU8822_RSUBBYP);
+
return 0;
}
diff --git a/sound/soc/codecs/nau8822.h b/sound/soc/codecs/nau8822.h
index 547ec057f853..646f6bb64bc5 100644
--- a/sound/soc/codecs/nau8822.h
+++ b/sound/soc/codecs/nau8822.h
@@ -187,6 +187,15 @@
/* NAU8822_REG_PLL_K3 (0x27) */
#define NAU8822_PLLK3_MASK 0x1FF
+/* NAU8822_REG_RIGHT_SPEAKER_CONTROL (0x2B) */
+#define NAU8822_RMIXMUT 0x20
+#define NAU8822_RSUBBYP 0x10
+
+#define NAU8822_RAUXRSUBG_SFT 1
+#define NAU8822_RAUXRSUBG_MASK 0x0E
+
+#define NAU8822_RAUXSMUT 0x01
+
/* System Clock Source */
enum {
NAU8822_CLK_MCLK,
--
2.25.1
