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ASoC: wcd9335: Configure DMIC clock rate for ECPP path

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DMIC clock on ECPP(Echo Cancellation Ping-Pong) hardware path
can run at lower clock rate to avoid power consumption. Select
ECPP dmic clock rate when decimator is connected only to ECPP
path.

CRs-fixed: 1022917
Change-Id: I968e1fe6b099ebf5334eadb209219181293b207f
Signed-off-by: Sudheer Papothi <spapothi@codeaurora.org>
Signed-off-by: Vidyakumar Athota <vathota@codeaurora.org>
This commit is contained in:
Sudheer Papothi 2016-05-19 20:44:15 +05:30 • committed by Gerrit - the friendly Code Review server
parent c5ee57ee2b
commit c199c86a61
1 changed files with 23 additions and 0 deletions
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23
sound/soc/codecs/wcd9335.c
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@ -5820,6 +5820,18 @@ static u32 tasha_get_dmic_sample_rate(struct snd_soc_codec *codec,
tx_stream_fs = snd_soc_read(codec, tx_fs_reg) & 0x0F;
dmic_fs = tx_stream_fs <= 4 ? WCD9XXX_DMIC_SAMPLE_RATE_2P4MHZ :
WCD9XXX_DMIC_SAMPLE_RATE_4P8MHZ;
/*
* Check for ECPP path selection and DEC1 not connected to
* any other audio path to apply ECPP DMIC sample rate
*/
if ((adc_mux_index == 1) &&
((snd_soc_read(codec, WCD9335_CPE_SS_US_EC_MUX_CFG)
& 0x0F) == 0x0A) &&
((snd_soc_read(codec, WCD9335_CDC_IF_ROUTER_TX_MUX_CFG0)
& 0x0C) == 0x00)) {
dmic_fs = pdata->ecpp_dmic_sample_rate;
}
} else {
dmic_fs = pdata->dmic_sample_rate;
}
@ -12476,6 +12488,17 @@ static int tasha_handle_pdata(struct tasha_priv *tasha,
*/
pdata->mad_dmic_sample_rate = pdata->dmic_sample_rate;
}
if (pdata->ecpp_dmic_sample_rate ==
WCD9XXX_DMIC_SAMPLE_RATE_UNDEFINED) {
dev_info(codec->dev,
"%s: ecpp_dmic_rate invalid default = %d\n",
__func__, def_dmic_rate);
/*
* use dmic_sample_rate as the default for ECPP DMIC
* if ecpp dmic sample rate is undefined
*/
pdata->ecpp_dmic_sample_rate = pdata->dmic_sample_rate;
}
if (pdata->dmic_clk_drv ==
WCD9XXX_DMIC_CLK_DRIVE_UNDEFINED) {