linux-kernel - [PATCH 4/9] ASoC: amd: vg: update platform clock control sequence

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Date:   Wed, 23 Feb 2022 12:49:33 +0530
From:   Vijendar Mukunda <Vijendar.Mukunda@....com>
To:     <broonie@...nel.org>, <alsa-devel@...a-project.org>
CC:     <Alexander.Deucher@....com>, <Sunil-kumar.Dommati@....com>,
        <krisman@...labora.com>, <wtli@...oton.com>,
        Vijendar Mukunda <Vijendar.Mukunda@....com>,
        Liam Girdwood <lgirdwood@...il.com>,
        "Jaroslav Kysela" <perex@...ex.cz>, Takashi Iwai <tiwai@...e.com>,
        open list <linux-kernel@...r.kernel.org>
Subject: [PATCH 4/9] ASoC: amd: vg: update platform clock control sequence

Add pre power on widget event.
Based on this event update platform clock control sequence.

This will fix Codec clock and pll restoration issue during
system level resume.

Signed-off-by: Vijendar Mukunda <Vijendar.Mukunda@....com>
---
 sound/soc/amd/vangogh/acp5x-mach.c | 13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)

diff --git a/sound/soc/amd/vangogh/acp5x-mach.c b/sound/soc/amd/vangogh/acp5x-mach.c
index 14cf325e4b23..e610616d796c 100644
--- a/sound/soc/amd/vangogh/acp5x-mach.c
+++ b/sound/soc/amd/vangogh/acp5x-mach.c
@@ -33,6 +33,8 @@
 #define DUAL_CHANNEL		2
 #define ACP5X_NUVOTON_CODEC_DAI	"nau8821-hifi"
 #define VG_JUPITER 1
+#define ACP5X_NUVOTON_BCLK 3072000
+#define ACP5X_NAU8821_FREQ_OUT 12288000
 
 static unsigned long acp5x_machine_id;
 static struct snd_soc_jack vg_headset;
@@ -274,6 +276,15 @@ static int platform_clock_control(struct snd_soc_dapm_widget *w,
 			dev_err(card->dev, "set sysclk err = %d\n", ret);
 			return -EIO;
 		}
+	} else {
+		ret = snd_soc_dai_set_sysclk(codec_dai, NAU8821_CLK_FLL_BLK, 0,
+					     SND_SOC_CLOCK_IN);
+		if (ret < 0)
+			dev_err(codec_dai->dev, "can't set BLK clock %d\n", ret);
+		ret = snd_soc_dai_set_pll(codec_dai, 0, 0, ACP5X_NUVOTON_BCLK,
+					  ACP5X_NAU8821_FREQ_OUT);
+		if (ret < 0)
+			dev_err(codec_dai->dev, "can't set FLL: %d\n", ret);
 	}
 	return ret;
 }
@@ -289,7 +300,7 @@ static const struct snd_soc_dapm_widget acp5x_8821_widgets[] = {
 	SND_SOC_DAPM_MIC("Headset Mic", NULL),
 	SND_SOC_DAPM_MIC("Int Mic", NULL),
 	SND_SOC_DAPM_SUPPLY("Platform Clock", SND_SOC_NOPM, 0, 0,
-			    platform_clock_control, SND_SOC_DAPM_POST_PMD),
+			    platform_clock_control, SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
 };
 
 static const struct snd_soc_dapm_route acp5x_8821_audio_route[] = {
-- 
2.17.1