[PATCH] ASoC: mediatek: remove soft reset and add second I2S clock

[PC Liao]

To improve I2S flow, this patch removes soft reset and adds second
I2S clock to use.

Signed-off-by: PC Liao <pc.l...@mediatek.com>
---
 sound/soc/mediatek/mtk-afe-pcm.c |   14 ++++++--------
 1 file changed, 6 insertions(+), 8 deletions(-)

diff --git a/sound/soc/mediatek/mtk-afe-pcm.c b/sound/soc/mediatek/mtk-afe-pcm.c
index 689c51f..3456bfa 100644
--- a/sound/soc/mediatek/mtk-afe-pcm.c
+++ b/sound/soc/mediatek/mtk-afe-pcm.c
@@ -283,20 +283,13 @@ static void mtk_afe_set_i2s_enable(struct mtk_afe *afe, 
bool enable)
 
        regmap_read(afe->regmap, AFE_I2S_CON2, &val);
        if (!!(val & AFE_I2S_CON2_EN) == enable)
-               return; /* must skip soft reset */
-
-       /* I2S soft reset begin */
-       regmap_update_bits(afe->regmap, AUDIO_TOP_CON1, 0x4, 0x4);
+               return;
 
        /* input */
        regmap_update_bits(afe->regmap, AFE_I2S_CON2, 0x1, enable);
 
        /* output */
        regmap_update_bits(afe->regmap, AFE_I2S_CON1, 0x1, enable);
-
-       /* I2S soft reset end */
-       udelay(1);
-       regmap_update_bits(afe->regmap, AUDIO_TOP_CON1, 0x4, 0);
 }
 
 static int mtk_afe_dais_enable_clks(struct mtk_afe *afe,
@@ -365,6 +358,7 @@ static int mtk_afe_i2s_startup(struct snd_pcm_substream 
*substream,
                return 0;
 
        mtk_afe_dais_enable_clks(afe, afe->clocks[MTK_CLK_I2S1_M], NULL);
+       mtk_afe_dais_enable_clks(afe, afe->clocks[MTK_CLK_I2S2_M], NULL);
        regmap_update_bits(afe->regmap, AUDIO_TOP_CON0,
                           AUD_TCON0_PDN_22M | AUD_TCON0_PDN_24M, 0);
        return 0;
@@ -384,6 +378,7 @@ static void mtk_afe_i2s_shutdown(struct snd_pcm_substream 
*substream,
                           AUD_TCON0_PDN_22M | AUD_TCON0_PDN_24M,
                           AUD_TCON0_PDN_22M | AUD_TCON0_PDN_24M);
        mtk_afe_dais_disable_clks(afe, afe->clocks[MTK_CLK_I2S1_M], NULL);
+       mtk_afe_dais_disable_clks(afe, afe->clocks[MTK_CLK_I2S2_M], NULL);
 }
 
 static int mtk_afe_i2s_prepare(struct snd_pcm_substream *substream,
@@ -397,6 +392,9 @@ static int mtk_afe_i2s_prepare(struct snd_pcm_substream 
*substream,
        mtk_afe_dais_set_clks(afe,
                              afe->clocks[MTK_CLK_I2S1_M], runtime->rate * 256,
                              NULL, 0);
+       mtk_afe_dais_set_clks(afe,
+                             afe->clocks[MTK_CLK_I2S2_M], runtime->rate * 256,
+                             NULL, 0);
        /* config I2S */
        ret = mtk_afe_set_i2s(afe, substream->runtime->rate);
        if (ret)
-- 
1.7.9.5