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Commit 8237880b authored by Sudheer Papothi's avatar Sudheer Papothi Committed by Gerrit - the friendly Code Review server
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ASoC: msm8996: Add independent clock support on codec 



WCD9335 codec has single master clock supply widget for both
playback and recording paths. Adding separate clock supply
for playback and recording paths will help handle low power
audio recording usecases without affecting playback usecases.
Change is to enable separate clock supply widgets for playback
and recording paths.

CRs-fixed: 1022917
Change-Id: I3978d2c53f2b04104d9d279f8acad60326f9405c
Signed-off-by: default avatarSudheer Papothi <spapothi@codeaurora.org>
Signed-off-by: default avatarVidyakumar Athota <vathota@codeaurora.org>
parent 7dcf64b6

sound/soc/msm/msm8996.c

+36 −4
Original line number Diff line number Diff line
@@ -490,6 +490,35 @@ static int msm8996_mclk_event(struct snd_soc_dapm_widget *w, 
	return 0;

}



static int msm_snd_enable_codec_ext_tx_clk(struct snd_soc_codec *codec,

					   int enable, bool dapm)

{

	int ret = 0;



	if (!strcmp(dev_name(codec->dev), "tasha_codec"))

		ret = tasha_cdc_mclk_tx_enable(codec, enable, dapm);

	else {

		dev_err(codec->dev, "%s: unknown codec to enable ext clk\n",

			__func__);

		ret = -EINVAL;

	}

	return ret;

}



static int msm8996_mclk_tx_event(struct snd_soc_dapm_widget *w,

				 struct snd_kcontrol *kcontrol, int event)

{

	pr_debug("%s: event = %d\n", __func__, event);



	switch (event) {

	case SND_SOC_DAPM_PRE_PMU:

		return msm_snd_enable_codec_ext_tx_clk(w->codec, 1, true);

	case SND_SOC_DAPM_POST_PMD:

		return msm_snd_enable_codec_ext_tx_clk(w->codec, 0, true);

	}

	return 0;

}



static int msm_hifi_ctrl_event(struct snd_soc_dapm_widget *w,

				    struct snd_kcontrol *k, int event)

{
@@ -533,6 +562,9 @@ static const struct snd_soc_dapm_widget msm8996_dapm_widgets[] = { 
	SND_SOC_DAPM_SUPPLY("MCLK",  SND_SOC_NOPM, 0, 0,

	msm8996_mclk_event, SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),



	SND_SOC_DAPM_SUPPLY("MCLK TX",  SND_SOC_NOPM, 0, 0,

	msm8996_mclk_tx_event, SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),



	SND_SOC_DAPM_SPK("Lineout_1 amp", NULL),

	SND_SOC_DAPM_SPK("Lineout_3 amp", NULL),

	SND_SOC_DAPM_SPK("Lineout_2 amp", NULL),
@@ -558,10 +590,10 @@ static const struct snd_soc_dapm_widget msm8996_dapm_widgets[] = { 
};



static struct snd_soc_dapm_route wcd9335_audio_paths[] = {

	{"MIC BIAS1", NULL, "MCLK"},

	{"MIC BIAS2", NULL, "MCLK"},

	{"MIC BIAS3", NULL, "MCLK"},

	{"MIC BIAS4", NULL, "MCLK"},

	{"MIC BIAS1", NULL, "MCLK TX"},

	{"MIC BIAS2", NULL, "MCLK TX"},

	{"MIC BIAS3", NULL, "MCLK TX"},

	{"MIC BIAS4", NULL, "MCLK TX"},

};



static int slim5_rx_sample_rate_get(struct snd_kcontrol *kcontrol,