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ASoC: wcd934x: Avoid soundwire enable when codec is in power collapse

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During SSR, when the playback on speaker gets started before codec
is out of digital core power collapse, results in soundwire
register read/write failures. Check for codec power state before
enabling the soundwire during speaker device path enablement for
playback usecase to avoid soundwire register read/write failures.

Change-Id: I3b45ef0c34ad4f97aad89afaf719989ffbda7485
Signed-off-by: Sudheer Papothi <spapothi@codeaurora.org>
This commit is contained in:
Sudheer Papothi 2018-09-01 04:33:47 +05:30 committed by Gerrit - the friendly Code Review server
parent 662dec1e1e
commit 2498e397f4
1 changed files with 6 additions and 0 deletions
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6
asoc/codecs/wcd934x/wcd934x.c
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@ -2974,6 +2974,11 @@ static int __tavil_codec_enable_swr(struct snd_soc_dapm_widget *w, int event)
tavil->swr.rx_8_count++;
ch_cnt = !!(tavil->swr.rx_7_count) + tavil->swr.rx_8_count;
if (wcd9xxx_get_current_power_state(tavil->wcd9xxx,
WCD9XXX_DIG_CORE_REGION_1)
!= WCD_REGION_POWER_COLLAPSE_REMOVE)
goto done;
swrm_wcd_notify(tavil->swr.ctrl_data[0].swr_pdev,
SWR_DEVICE_UP, NULL);
swrm_wcd_notify(tavil->swr.ctrl_data[0].swr_pdev,
@ -2994,6 +2999,7 @@ static int __tavil_codec_enable_swr(struct snd_soc_dapm_widget *w, int event)
break;
}
done:
dev_dbg(tavil->dev, "%s: %s: current swr ch cnt: %d\n",
__func__, w->name, ch_cnt);