lkml.org 
[lkml]   [2016]   [Feb]   [23]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH] ASoC: mediatek: remove soft reset and add second I2S clock
Date
To improve I2S flow, this patch removes soft reset and adds second
I2S clock to use.

Signed-off-by: PC Liao <pc.liao@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
\
 
 \ /
  Last update: 2016-02-23 09:41    [W:0.041 / U:0.480 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site