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ASoC: codecs: handle device disconnect during SSR

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During SSR, when usbc analog device is disconnected, the
respective disconnect interrupt is not handled and hence userspace
is not notified. When ADSP recovers, fsa driver sends a disconnect
notification. So handle device disconnect and notify jack/userspace
through this notification.

Change-Id: Ic695c2267c9289f9528d50202938ec09f634de8a
Signed-off-by: Vignesh Kulothungan <vigneshk@codeaurora.org>
This commit is contained in:
Vignesh Kulothungan
2020-05-20 15:50:14 -07:00
committed by Gerrit - the friendly Code Review server
parent 06ed8063cd
commit 75f229237a
3 changed files with 22 additions and 0 deletions
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19
asoc/codecs/wcd-mbhc-v2.c
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@@ -1621,6 +1621,8 @@ static int wcd_mbhc_set_keycode(struct wcd_mbhc *mbhc)
static int wcd_mbhc_usbc_ana_event_handler(struct notifier_block *nb,
unsigned long mode, void *ptr)
{
unsigned int l_det_en = 0;
unsigned int detection_type = 0;
struct wcd_mbhc *mbhc = container_of(nb, struct wcd_mbhc, fsa_nb);
if (!mbhc)
@@ -1633,6 +1635,23 @@ static int wcd_mbhc_usbc_ana_event_handler(struct notifier_block *nb,
mbhc->mbhc_cb->clk_setup(mbhc->component, true);
/* insertion detected, enable L_DET_EN */
WCD_MBHC_REG_UPDATE_BITS(WCD_MBHC_L_DET_EN, 1);
} else {
WCD_MBHC_REG_READ(WCD_MBHC_MECH_DETECTION_TYPE, detection_type);
WCD_MBHC_REG_READ(WCD_MBHC_L_DET_EN, l_det_en);
/* If both l_det_en and detection type are set, it means device was
* unplugged during SSR and detection interrupt was not handled.
* So trigger device disconnect */
if (detection_type && l_det_en) {
/* Set the detection type appropriately */
WCD_MBHC_REG_UPDATE_BITS(WCD_MBHC_MECH_DETECTION_TYPE,
!detection_type);
/* Set current plug type to the state before SSR */
mbhc->current_plug = mbhc->plug_before_ssr;
wcd_mbhc_swch_irq_handler(mbhc);
mbhc->mbhc_cb->lock_sleep(mbhc, false);
mbhc->plug_before_ssr = MBHC_PLUG_TYPE_NONE;
}
}
return 0;
}