ASoC: mediatek: mt6359: add mtkaif gpio setting

Add mtkaif gpio driving to increase signal strength and smt setting to
prevent from overshooting.

Signed-off-by: Trevor Wu <trevor.wu@mediatek.com>
Link: https://lore.kernel.org/r/20230508071532.21665-4-trevor.wu@mediatek.com
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/sound/soc/codecs/mt6359.c b/sound/soc/codecs/mt6359.c
index 65e6d4d08b6a6eaf82b243d3a19892f9b909df53..a37ad61a825394081567af5941d7e59e5487b34a 100644 (file)
--- a/sound/soc/codecs/mt6359.c
+++ b/sound/soc/codecs/mt6359.c
@@ -18,6 +18,20 @@
 
 #include "mt6359.h"
 
+static void mt6359_set_gpio_smt(struct mt6359_priv *priv)
+{
+       /* set gpio SMT mode */
+       regmap_update_bits(priv->regmap, MT6359_SMT_CON1, 0x3ff0, 0x3ff0);
+}
+
+static void mt6359_set_gpio_driving(struct mt6359_priv *priv)
+{
+       /* 8:4mA(default), a:8mA, c:12mA, e:16mA */
+       regmap_update_bits(priv->regmap, MT6359_DRV_CON2, 0xffff, 0x8888);
+       regmap_update_bits(priv->regmap, MT6359_DRV_CON3, 0xffff, 0x8888);
+       regmap_update_bits(priv->regmap, MT6359_DRV_CON4, 0x00ff, 0x88);
+}
+
 static void mt6359_set_playback_gpio(struct mt6359_priv *priv)
 {
        /* set gpio mosi mode, clk / data mosi */
@@ -2745,6 +2759,8 @@ static int mt6359_codec_init_reg(struct snd_soc_component *cmpnt)
                           0x1 << RG_AUDLOLSCDISABLE_VAUDP32_SFT);
 
        /* set gpio */
+       mt6359_set_gpio_smt(priv);
+       mt6359_set_gpio_driving(priv);
        mt6359_reset_playback_gpio(priv);
        mt6359_reset_capture_gpio(priv);