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asoc: wcd938x: 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.

Change-Id: Id45dee1a150c471d1bb29b9bfed9f416b8454a5f
Signed-off-by: Karthikeyan Mani <kmani@codeaurora.org>
This commit is contained in:
Karthikeyan Mani 2019-05-15 15:14:51 -07:00 committed by Gerrit - the friendly Code Review server
parent 31231c306d
commit 17bea6ec6f
2 changed files with 56 additions and 0 deletions
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1
asoc/codecs/wcd938x/internal.h
View File

@ -95,6 +95,7 @@ struct wcd938x_priv {
struct snd_info_entry *entry;
struct snd_info_entry *version_entry;
int flyback_cur_det_disable;
int ear_rx_path;
};
struct wcd938x_micbias_setting {

55
asoc/codecs/wcd938x/wcd938x.c
View File

@ -29,6 +29,7 @@
#define WCD938X_VERSION_1_0 1
#define WCD938X_VERSION_ENTRY_SIZE 32
#define EAR_RX_PATH_AUX 1
#define ADC_MODE_VAL_HIFI 0x01
#define ADC_MODE_VAL_LO_HIF 0x02
@ -629,6 +630,8 @@ static int wcd938x_codec_enable_hphr_pa(struct snd_soc_dapm_widget *w,
/* 100 usec delay as per HW requirement */
usleep_range(100, 110);
set_bit(HPH_PA_DELAY, &wcd938x->status_mask);
snd_soc_component_update_bits(component,
WCD938X_DIGITAL_PDM_WD_CTL1, 0x17, 0x13);
break;
case SND_SOC_DAPM_POST_PMU:
/*
@ -666,6 +669,8 @@ static int wcd938x_codec_enable_hphr_pa(struct snd_soc_dapm_widget *w,
case SND_SOC_DAPM_POST_PMD:
/* 7 msec delay as per HW requirement */
usleep_range(7000, 7010);
snd_soc_component_update_bits(component,
WCD938X_DIGITAL_PDM_WD_CTL1, 0x17, 0x00);
blocking_notifier_call_chain(&wcd938x->mbhc->notifier,
WCD_EVENT_POST_HPHR_PA_OFF,
&wcd938x->mbhc->wcd_mbhc);
@ -706,6 +711,8 @@ static int wcd938x_codec_enable_hphl_pa(struct snd_soc_dapm_widget *w,
/* 100 usec delay as per HW requirement */
usleep_range(100, 110);
set_bit(HPH_PA_DELAY, &wcd938x->status_mask);
snd_soc_component_update_bits(component,
WCD938X_DIGITAL_PDM_WD_CTL0, 0x17, 0x13);
break;
case SND_SOC_DAPM_POST_PMU:
/*
@ -743,6 +750,8 @@ static int wcd938x_codec_enable_hphl_pa(struct snd_soc_dapm_widget *w,
case SND_SOC_DAPM_POST_PMD:
/* 7 msec delay as per HW requirement */
usleep_range(7000, 7010);
snd_soc_component_update_bits(component,
WCD938X_DIGITAL_PDM_WD_CTL0, 0x17, 0x00);
blocking_notifier_call_chain(&wcd938x->mbhc->notifier,
WCD_EVENT_POST_HPHL_PA_OFF,
&wcd938x->mbhc->wcd_mbhc);
@ -775,6 +784,8 @@ static int wcd938x_codec_enable_aux_pa(struct snd_soc_dapm_widget *w,
ret = swr_slvdev_datapath_control(wcd938x->rx_swr_dev,
wcd938x->rx_swr_dev->dev_num,
true);
snd_soc_component_update_bits(component,
WCD938X_DIGITAL_PDM_WD_CTL2, 0x05, 0x05);
break;
case SND_SOC_DAPM_POST_PMU:
/* 1 msec delay as per HW requirement */
@ -798,6 +809,8 @@ static int wcd938x_codec_enable_aux_pa(struct snd_soc_dapm_widget *w,
case SND_SOC_DAPM_POST_PMD:
/* 1 msec delay as per HW requirement */
usleep_range(1000, 1010);
snd_soc_component_update_bits(component,
WCD938X_DIGITAL_PDM_WD_CTL2, 0x05, 0x00);
wcd_cls_h_fsm(component, &wcd938x->clsh_info,
WCD_CLSH_EVENT_POST_PA,
WCD_CLSH_STATE_AUX,
@ -831,6 +844,21 @@ static int wcd938x_codec_enable_ear_pa(struct snd_soc_dapm_widget *w,
ret = swr_slvdev_datapath_control(wcd938x->rx_swr_dev,
wcd938x->rx_swr_dev->dev_num,
true);
/*
* Enable watchdog interrupt for HPHL or AUX
* depending on mux value
*/
wcd938x->ear_rx_path =
snd_soc_component_read32(
component, WCD938X_DIGITAL_CDC_EAR_PATH_CTL);
if (wcd938x->ear_rx_path & EAR_RX_PATH_AUX)
snd_soc_component_update_bits(component,
WCD938X_DIGITAL_PDM_WD_CTL2,
0x05, 0x05);
else
snd_soc_component_update_bits(component,
WCD938X_DIGITAL_PDM_WD_CTL0,
0x17, 0x13);
break;
case SND_SOC_DAPM_POST_PMU:
/* 6 msec delay as per HW requirement */
@ -854,6 +882,14 @@ static int wcd938x_codec_enable_ear_pa(struct snd_soc_dapm_widget *w,
case SND_SOC_DAPM_POST_PMD:
/* 7 msec delay as per HW requirement */
usleep_range(7000, 7010);
if (wcd938x->ear_rx_path & EAR_RX_PATH_AUX)
snd_soc_component_update_bits(component,
WCD938X_DIGITAL_PDM_WD_CTL2,
0x05, 0x00);
else
snd_soc_component_update_bits(component,
WCD938X_DIGITAL_PDM_WD_CTL0,
0x17, 0x00);
wcd_cls_h_fsm(component, &wcd938x->clsh_info,
WCD_CLSH_EVENT_POST_PA,
WCD_CLSH_STATE_EAR,
@ -2717,6 +2753,13 @@ struct wcd938x_pdata *wcd938x_populate_dt_data(struct device *dev)
return pdata;
}
static irqreturn_t wcd938x_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 wcd938x_bind(struct device *dev)
{
int ret = 0, i = 0;
@ -2780,6 +2823,18 @@ static int wcd938x_bind(struct device *dev)
}
wcd938x->tx_swr_dev->slave_irq = wcd938x->virq;
/* Request for watchdog interrupt */
wcd_request_irq(&wcd938x->irq_info, WCD938X_IRQ_HPHR_PDM_WD_INT,
"HPHR PDM WD INT", wcd938x_wd_handle_irq, NULL);
wcd_request_irq(&wcd938x->irq_info, WCD938X_IRQ_HPHL_PDM_WD_INT,
"HPHL PDM WD INT", wcd938x_wd_handle_irq, NULL);
wcd_request_irq(&wcd938x->irq_info, WCD938X_IRQ_AUX_PDM_WD_INT,
"AUX PDM WD INT", wcd938x_wd_handle_irq, NULL);
/* Enable watchdog interrupt for HPH and AUX */
wcd_enable_irq(&wcd938x->irq_info, WCD938X_IRQ_HPHR_PDM_WD_INT);
wcd_enable_irq(&wcd938x->irq_info, WCD938X_IRQ_HPHL_PDM_WD_INT);
wcd_enable_irq(&wcd938x->irq_info, WCD938X_IRQ_AUX_PDM_WD_INT);
ret = snd_soc_register_component(dev, &soc_codec_dev_wcd938x,
NULL, 0);
if (ret) {