ASoC: mediatek: Turn AFE on/off in runtime resume/suspend

AFE is actually allowed to be turn on before configuration of DAIs
since each DAI has its own enabling control. Turn on/off AFE in
runtime resume/suspend to avoid AFE being shut down when closing a DAI
while other DAIs are still active.

Signed-off-by: Koro Chen <koro.chen@mediatek.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/sound/soc/mediatek/mtk-afe-pcm.c b/sound/soc/mediatek/mtk-afe-pcm.c
index 5399a0e..08af9f5 100644 (file)
--- a/sound/soc/mediatek/mtk-afe-pcm.c
+++ b/sound/soc/mediatek/mtk-afe-pcm.c
@@ -382,9 +382,6 @@ 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);
-
-       /* disable AFE */
-       regmap_update_bits(afe->regmap, AFE_DAC_CON0, 0x1, 0);
 }
 
 static int mtk_afe_i2s_prepare(struct snd_pcm_substream *substream,
@@ -433,9 +430,6 @@ static void mtk_afe_hdmi_shutdown(struct snd_pcm_substream *substream,
 
        mtk_afe_dais_disable_clks(afe, afe->clocks[MTK_CLK_I2S3_M],
                                  afe->clocks[MTK_CLK_I2S3_B]);
-
-       /* disable AFE */
-       regmap_update_bits(afe->regmap, AFE_DAC_CON0, 0x1, 0);
 }
 
 static int mtk_afe_hdmi_prepare(struct snd_pcm_substream *substream,
@@ -679,17 +673,6 @@ static int mtk_afe_dais_hw_free(struct snd_pcm_substream *substream,
        return snd_pcm_lib_free_pages(substream);
 }
 
-static int mtk_afe_dais_prepare(struct snd_pcm_substream *substream,
-                               struct snd_soc_dai *dai)
-{
-       struct snd_soc_pcm_runtime *rtd = substream->private_data;
-       struct mtk_afe *afe = snd_soc_platform_get_drvdata(rtd->platform);
-
-       /* enable AFE */
-       regmap_update_bits(afe->regmap, AFE_DAC_CON0, 0x1, 0x1);
-       return 0;
-}
-
 static int mtk_afe_dais_trigger(struct snd_pcm_substream *substream, int cmd,
                                struct snd_soc_dai *dai)
 {
@@ -757,7 +740,6 @@ static const struct snd_soc_dai_ops mtk_afe_dai_ops = {
        .shutdown       = mtk_afe_dais_shutdown,
        .hw_params      = mtk_afe_dais_hw_params,
        .hw_free        = mtk_afe_dais_hw_free,
-       .prepare        = mtk_afe_dais_prepare,
        .trigger        = mtk_afe_dais_trigger,
 };
 
@@ -1118,6 +1100,9 @@ static int mtk_afe_runtime_suspend(struct device *dev)
 {
        struct mtk_afe *afe = dev_get_drvdata(dev);
 
+       /* disable AFE */
+       regmap_update_bits(afe->regmap, AFE_DAC_CON0, 0x1, 0);
+
        /* disable AFE clk */
        regmap_update_bits(afe->regmap, AUDIO_TOP_CON0,
                           AUD_TCON0_PDN_AFE, AUD_TCON0_PDN_AFE);
@@ -1164,6 +1149,9 @@ static int mtk_afe_runtime_resume(struct device *dev)
 
        /* unmask all IRQs */
        regmap_update_bits(afe->regmap, AFE_IRQ_MCU_EN, 0xff, 0xff);
+
+       /* enable AFE */
+       regmap_update_bits(afe->regmap, AFE_DAC_CON0, 0x1, 0x1);
        return 0;
 
 err_bck0: