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asoc: mbhc: fix for fake ins irq

Bläddra i källkod 
Check for in2p clamp state in insertion irq
and ignore the interrupt if the clamp is already
set, which means the mechanical removal is about
to happen next.

Change-Id: I55691d427cf07d5b61862b6dbd39f3ec34d873e5
Signed-off-by: Karthikeyan Mani <kmani@codeaurora.org>
This commit is contained in:
Karthikeyan Mani
2018-02-01 14:07:41 -08:00
committad av Gerrit - the friendly Code Review server
förälder aa9c44a396
incheckning dd50371847
3 ändrade filer med 21 tillägg och 2 borttagningar
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18
asoc/codecs/wcd-mbhc-adc.c
Visa fil

@@ -1,4 +1,4 @@
/* Copyright (c) 2017, The Linux Foundation. All rights reserved.
/* Copyright (c) 2017-2018, The Linux Foundation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 and
@@ -34,6 +34,7 @@
#define WCD_MBHC_ADC_HS_THRESHOLD_MV 1700
#define WCD_MBHC_ADC_HPH_THRESHOLD_MV 75
#define WCD_MBHC_ADC_MICBIAS_MV 1800
#define WCD_MBHC_FAKE_INS_RETRY 4
static int wcd_mbhc_get_micbias(struct wcd_mbhc *mbhc)
{
@@ -1021,6 +1022,8 @@ exit:
static irqreturn_t wcd_mbhc_adc_hs_ins_irq(int irq, void *data)
{
struct wcd_mbhc *mbhc = data;
u8 clamp_state = 0;
u8 clamp_retry = WCD_MBHC_FAKE_INS_RETRY;
pr_debug("%s: enter\n", __func__);
@@ -1035,6 +1038,19 @@ static irqreturn_t wcd_mbhc_adc_hs_ins_irq(int irq, void *data)
return IRQ_HANDLED;
}
do {
WCD_MBHC_REG_READ(WCD_MBHC_IN2P_CLAMP_STATE, clamp_state);
if (clamp_state) {
pr_debug("%s: fake insertion irq, leave\n", __func__);
return IRQ_HANDLED;
}
/*
* check clamp for 120ms but at 30ms chunks to leave
* room for other interrupts to be processed
*/
usleep_range(30000, 30100);
} while (--clamp_retry);
WCD_MBHC_RSC_LOCK(mbhc);
/*
* If current plug is headphone then there is no chance to

1
asoc/codecs/wcd-mbhc-v2.h
Visa fil

@@ -189,6 +189,7 @@ enum wcd_mbhc_register_function {
WCD_MBHC_BTN_DBNC,
WCD_MBHC_HS_VREF,
WCD_MBHC_HS_COMP_RESULT,
WCD_MBHC_IN2P_CLAMP_STATE,
WCD_MBHC_MIC_SCHMT_RESULT,
WCD_MBHC_HPHL_SCHMT_RESULT,
WCD_MBHC_HPHR_SCHMT_RESULT,

4
asoc/codecs/wcd934x/wcd934x-mbhc.c
Visa fil

@@ -1,5 +1,5 @@
/*
* Copyright (c) 2015-2017, The Linux Foundation. All rights reserved.
* Copyright (c) 2015-2018, The Linux Foundation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 and
@@ -86,6 +86,8 @@ static struct wcd_mbhc_register
WCD934X_MBHC_NEW_CTL_2, 0x03, 0, 0),
WCD_MBHC_REGISTER("WCD_MBHC_HS_COMP_RESULT",
WCD934X_ANA_MBHC_RESULT_3, 0x08, 3, 0),
WCD_MBHC_REGISTER("WCD_MBHC_IN2P_CLAMP_STATE",
WCD934X_ANA_MBHC_RESULT_3, 0x10, 4, 0),
WCD_MBHC_REGISTER("WCD_MBHC_MIC_SCHMT_RESULT",
WCD934X_ANA_MBHC_RESULT_3, 0x20, 5, 0),
WCD_MBHC_REGISTER("WCD_MBHC_HPHL_SCHMT_RESULT",