ASoC: wcd9xxx: Handle ADSP Subsystem Restart
Exercise codec reset as part of ADSP subsystem restart handling
and also update codec and ASoC cache registers to defaults. This
is required to clean up codec state post ADSP restart. Add flag
to avoid codec reset during device bootup.
If the software workaround to prevent leakage on the spkdrv is
enabled, handle the workaround post subsystem restart by turning
on PA and bandgap again.
Change-Id: Ieb7f9892b45bc01f0e2ea38485c4f63298f83999
Signed-off-by: Ravishankar Sarawadi <crsaraw@codeaurora.org>
diff --git a/sound/soc/codecs/wcd9xxx-resmgr.c b/sound/soc/codecs/wcd9xxx-resmgr.c
index d744cb9..0ab650e 100644
--- a/sound/soc/codecs/wcd9xxx-resmgr.c
+++ b/sound/soc/codecs/wcd9xxx-resmgr.c
@@ -195,6 +195,24 @@
pr_debug("%s: leave\n", __func__);
}
+void wcd9xxx_resmgr_post_ssr(struct wcd9xxx_resmgr *resmgr)
+{
+ int old_bg_audio_users, old_bg_mbhc_users;
+
+ WCD9XXX_BCL_ASSERT_LOCKED(resmgr);
+
+ old_bg_audio_users = resmgr->bg_audio_users;
+ resmgr->bg_audio_users = 0;
+ old_bg_mbhc_users = resmgr->bg_mbhc_users;
+ resmgr->bg_mbhc_users = 0;
+
+ while (old_bg_audio_users && --old_bg_audio_users)
+ wcd9xxx_resmgr_get_bandgap(resmgr, WCD9XXX_BANDGAP_AUDIO_MODE);
+
+ while (old_bg_mbhc_users && --old_bg_mbhc_users)
+ wcd9xxx_resmgr_get_bandgap(resmgr, WCD9XXX_BANDGAP_MBHC_MODE);
+}
+
/*
* wcd9xxx_resmgr_get_bandgap : Vote for bandgap ref
* choice : WCD9XXX_BANDGAP_AUDIO_MODE, WCD9XXX_BANDGAP_MBHC_MODE