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ASoC: wcd937x: Enable watchdog interrupt

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Handle PDM watchdog interrupt. Enable watchdog
before analog PA is enabled and disable it
after analog PA is disabled so as to prevent false alarms.

CRs-Fixed: 2336526
Change-Id: I3c16a9dcd0f4f84bf8ad0bfde9560330c143cdf9
Signed-off-by: Vatsal Bucha <vbucha@codeaurora.org>
This commit is contained in:
Vatsal Bucha
2018-10-22 12:03:15 +05:30
committed by Meng Wang
parent 63f4815535
commit beccfad9b6
2 changed files with 63 additions and 4 deletions
Download Patch File Download Diff File Expand all files Collapse all files

3
asoc/codecs/wcd937x/internal.h
View File

@@ -1,5 +1,5 @@
/* SPDX-License-Identifier: GPL-2.0-only */
/* Copyright (c) 2018, The Linux Foundation. All rights reserved.
/* Copyright (c) 2018-2019, The Linux Foundation. All rights reserved.
*/
#ifndef _WCD937X_INTERNAL_H
@@ -82,6 +82,7 @@ struct wcd937x_priv {
/* Entry for version info */
struct snd_info_entry *entry;
struct snd_info_entry *version_entry;
int ear_rx_path;
};
struct wcd937x_micbias_setting {

64
asoc/codecs/wcd937x/wcd937x.c
View File

@@ -1,6 +1,6 @@
// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (c) 2018, The Linux Foundation. All rights reserved.
* Copyright (c) 2018-2019, The Linux Foundation. All rights reserved.
*/
#include <linux/module.h>
@@ -34,6 +34,7 @@
#define WCD937X_VERSION_1_0 1
#define WCD937X_VERSION_ENTRY_SIZE 32
#define EAR_RX_PATH_AUX 1
enum {
CODEC_TX = 0,
@@ -653,6 +654,11 @@ static int wcd937x_codec_enable_hphr_pa(struct snd_soc_dapm_widget *w,
0x10, 0x10);
usleep_range(100, 110);
set_bit(HPH_PA_DELAY, &wcd937x->status_mask);
ret = swr_slvdev_datapath_control(wcd937x->rx_swr_dev,
wcd937x->rx_swr_dev->dev_num,
true);
snd_soc_component_update_bits(component,
WCD937X_DIGITAL_PDM_WD_CTL1, 0x17, 0x13);
break;
case SND_SOC_DAPM_POST_PMU:
/*
@@ -691,6 +697,8 @@ static int wcd937x_codec_enable_hphr_pa(struct snd_soc_dapm_widget *w,
break;
case SND_SOC_DAPM_POST_PMD:
usleep_range(7000, 7010);
snd_soc_component_update_bits(component,
WCD937X_DIGITAL_PDM_WD_CTL1, 0x17, 0x00);
blocking_notifier_call_chain(&wcd937x->mbhc->notifier,
WCD_EVENT_POST_HPHR_PA_OFF,
&wcd937x->mbhc->wcd_mbhc);
@@ -731,6 +739,8 @@ static int wcd937x_codec_enable_hphl_pa(struct snd_soc_dapm_widget *w,
0x20, 0x20);
usleep_range(100, 110);
set_bit(HPH_PA_DELAY, &wcd937x->status_mask);
snd_soc_component_update_bits(component,
WCD937X_DIGITAL_PDM_WD_CTL0, 0x17, 0x13);
break;
case SND_SOC_DAPM_POST_PMU:
/*
@@ -769,6 +779,8 @@ static int wcd937x_codec_enable_hphl_pa(struct snd_soc_dapm_widget *w,
break;
case SND_SOC_DAPM_POST_PMD:
usleep_range(7000, 7010);
snd_soc_component_update_bits(component,
WCD937X_DIGITAL_PDM_WD_CTL0, 0x17, 0x00);
blocking_notifier_call_chain(&wcd937x->mbhc->notifier,
WCD_EVENT_POST_HPHL_PA_OFF,
&wcd937x->mbhc->wcd_mbhc);
@@ -801,6 +813,8 @@ static int wcd937x_codec_enable_aux_pa(struct snd_soc_dapm_widget *w,
ret = swr_slvdev_datapath_control(wcd937x->rx_swr_dev,
wcd937x->rx_swr_dev->dev_num,
true);
snd_soc_component_update_bits(component,
WCD937X_DIGITAL_PDM_WD_CTL2, 0x05, 0x05);
break;
case SND_SOC_DAPM_POST_PMU:
usleep_range(1000, 1010);
@@ -820,12 +834,14 @@ static int wcd937x_codec_enable_aux_pa(struct snd_soc_dapm_widget *w,
(WCD_RX3 << 0x10 | 0x1));
break;
case SND_SOC_DAPM_POST_PMD:
usleep_range(1000, 1010);
usleep_range(1000, 1010);
/* Add delay as per hw requirement */
usleep_range(2000, 2010);
wcd_cls_h_fsm(component, &wcd937x->clsh_info,
WCD_CLSH_EVENT_POST_PA,
WCD_CLSH_STATE_AUX,
hph_mode);
snd_soc_component_update_bits(component,
WCD937X_DIGITAL_PDM_WD_CTL2, 0x05, 0x00);
break;
};
return ret;
@@ -849,6 +865,21 @@ static int wcd937x_codec_enable_ear_pa(struct snd_soc_dapm_widget *w,
ret = swr_slvdev_datapath_control(wcd937x->rx_swr_dev,
wcd937x->rx_swr_dev->dev_num,
true);
/*
* Enable watchdog interrupt for HPHL or AUX
* depending on mux value
*/
wcd937x->ear_rx_path =
snd_soc_component_read32(
component, WCD937X_DIGITAL_CDC_EAR_PATH_CTL);
if (wcd937x->ear_rx_path & EAR_RX_PATH_AUX)
snd_soc_component_update_bits(component,
WCD937X_DIGITAL_PDM_WD_CTL2,
0x05, 0x05);
else
snd_soc_component_update_bits(component,
WCD937X_DIGITAL_PDM_WD_CTL0,
0x17, 0x13);
break;
case SND_SOC_DAPM_POST_PMU:
usleep_range(6000, 6010);
@@ -873,6 +904,14 @@ static int wcd937x_codec_enable_ear_pa(struct snd_soc_dapm_widget *w,
WCD_CLSH_EVENT_POST_PA,
WCD_CLSH_STATE_EAR,
hph_mode);
if (wcd937x->ear_rx_path & EAR_RX_PATH_AUX)
snd_soc_component_update_bits(component,
WCD937X_DIGITAL_PDM_WD_CTL2,
0x05, 0x00);
else
snd_soc_component_update_bits(component,
WCD937X_DIGITAL_PDM_WD_CTL0,
0x17, 0x00);
break;
};
return ret;
@@ -2445,6 +2484,13 @@ static int wcd937x_wakeup(void *handle, bool enable)
return swr_device_wakeup_unvote(priv->tx_swr_dev);
}
static irqreturn_t wcd937x_wd_handle_irq(int irq, void *data)
{
pr_err_ratelimited("%s: Watchdog interrupt for irq =%d triggered\n",
__func__, irq);
return IRQ_HANDLED;
}
static int wcd937x_bind(struct device *dev)
{
int ret = 0, i = 0;
@@ -2575,6 +2621,18 @@ static int wcd937x_bind(struct device *dev)
wcd937x->tx_swr_dev->slave_irq = wcd937x->virq;
mutex_init(&wcd937x->micb_lock);
/* Request for watchdog interrupt */
wcd_request_irq(&wcd937x->irq_info, WCD937X_IRQ_HPHR_PDM_WD_INT,
"HPHR PDM WD INT", wcd937x_wd_handle_irq, NULL);
wcd_request_irq(&wcd937x->irq_info, WCD937X_IRQ_HPHL_PDM_WD_INT,
"HPHL PDM WD INT", wcd937x_wd_handle_irq, NULL);
wcd_request_irq(&wcd937x->irq_info, WCD937X_IRQ_AUX_PDM_WD_INT,
"AUX PDM WD INT", wcd937x_wd_handle_irq, NULL);
/* Enable watchdog interrupt for HPH and AUX */
wcd_enable_irq(&wcd937x->irq_info, WCD937X_IRQ_HPHR_PDM_WD_INT);
wcd_enable_irq(&wcd937x->irq_info, WCD937X_IRQ_HPHL_PDM_WD_INT);
wcd_enable_irq(&wcd937x->irq_info, WCD937X_IRQ_AUX_PDM_WD_INT);
ret = snd_soc_register_component(dev, &soc_codec_dev_wcd937x,
NULL, 0);
if (ret) {