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ASoC: wcd937x: Fix playback stop issue after SSR/PDR on special hs

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If we start playback on special hs after record is done and perform
SSR/PDR then playback gets paused. This happens because ANA_TX_DIV2_CLK
which needs to be enabled for special hs gets disabled after record
is stopped. Maintain a count for ANA_DIV2_CLK to enable/disable it
as required.

Change-Id: Ic73475c83cb16e3c014f35b8d46ee22d2e7a2efd
Signed-off-by: Vatsal Bucha <vbucha@codeaurora.org>
This commit is contained in:
Vatsal Bucha 2019-02-13 12:55:30 +05:30 committed by Meng Wang
parent 256a85678f
commit 13faf538b3
2 changed files with 33 additions and 1 deletions
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2
asoc/codecs/wcd937x/internal.h
View File

@ -83,6 +83,8 @@ struct wcd937x_priv {
struct snd_info_entry *entry;
struct snd_info_entry *version_entry;
int ear_rx_path;
int ana_clk_count;
struct mutex ana_tx_clk_lock;
};
struct wcd937x_micbias_setting {

32
asoc/codecs/wcd937x/wcd937x.c
View File

@ -1267,12 +1267,17 @@ static int wcd937x_codec_enable_adc(struct snd_soc_dapm_widget *w,
struct snd_soc_component *component =
snd_soc_dapm_to_component(w->dapm);
struct wcd937x_priv *wcd937x =
snd_soc_component_get_drvdata(component);
dev_dbg(component->dev, "%s wname: %s event: %d\n", __func__,
w->name, event);
switch (event) {
case SND_SOC_DAPM_PRE_PMU:
mutex_lock(&wcd937x->ana_tx_clk_lock);
wcd937x->ana_clk_count++;
mutex_unlock(&wcd937x->ana_tx_clk_lock);
snd_soc_component_update_bits(component,
WCD937X_DIGITAL_CDC_DIG_CLK_CTL, 0x80, 0x80);
snd_soc_component_update_bits(component,
@ -1296,6 +1301,8 @@ static int wcd937x_enable_req(struct snd_soc_dapm_widget *w,
{
struct snd_soc_component *component =
snd_soc_dapm_to_component(w->dapm);
struct wcd937x_priv *wcd937x =
snd_soc_component_get_drvdata(component);
dev_dbg(component->dev, "%s wname: %s event: %d\n", __func__,
w->name, event);
@ -1324,8 +1331,15 @@ static int wcd937x_enable_req(struct snd_soc_dapm_widget *w,
WCD937X_ANA_TX_CH2, 0x80, 0x00);
snd_soc_component_update_bits(component,
WCD937X_DIGITAL_CDC_DIG_CLK_CTL, 0x10, 0x00);
snd_soc_component_update_bits(component,
mutex_lock(&wcd937x->ana_tx_clk_lock);
wcd937x->ana_clk_count--;
if (wcd937x->ana_clk_count <= 0) {
snd_soc_component_update_bits(component,
WCD937X_DIGITAL_CDC_ANA_CLK_CTL, 0x10, 0x00);
wcd937x->ana_clk_count = 0;
}
mutex_unlock(&wcd937x->ana_tx_clk_lock);
snd_soc_component_update_bits(component,
WCD937X_DIGITAL_CDC_DIG_CLK_CTL, 0x80, 0x00);
break;
@ -1389,6 +1403,9 @@ int wcd937x_micbias_control(struct snd_soc_component *component,
break;
case MICB_ENABLE:
wcd937x->micb_ref[micb_index]++;
mutex_lock(&wcd937x->ana_tx_clk_lock);
wcd937x->ana_clk_count++;
mutex_unlock(&wcd937x->ana_tx_clk_lock);
if (wcd937x->micb_ref[micb_index] == 1) {
snd_soc_component_update_bits(component,
WCD937X_DIGITAL_CDC_DIG_CLK_CTL, 0xE0, 0xE0);
@ -1413,6 +1430,9 @@ int wcd937x_micbias_control(struct snd_soc_component *component,
&wcd937x->mbhc->wcd_mbhc);
break;
case MICB_DISABLE:
mutex_lock(&wcd937x->ana_tx_clk_lock);
wcd937x->ana_clk_count--;
mutex_unlock(&wcd937x->ana_tx_clk_lock);
if (wcd937x->micb_ref[micb_index] > 0)
wcd937x->micb_ref[micb_index]--;
if ((wcd937x->micb_ref[micb_index] == 0) &&
@ -1433,6 +1453,14 @@ int wcd937x_micbias_control(struct snd_soc_component *component,
post_off_event,
&wcd937x->mbhc->wcd_mbhc);
}
mutex_lock(&wcd937x->ana_tx_clk_lock);
if (wcd937x->ana_clk_count <= 0) {
snd_soc_component_update_bits(component,
WCD937X_DIGITAL_CDC_ANA_CLK_CTL,
0x10, 0x00);
wcd937x->ana_clk_count = 0;
}
mutex_unlock(&wcd937x->ana_tx_clk_lock);
if (is_dapm && post_dapm_off && wcd937x->mbhc)
blocking_notifier_call_chain(
&wcd937x->mbhc->notifier, post_dapm_off,
@ -2757,6 +2785,7 @@ static int wcd937x_bind(struct device *dev)
}
mutex_init(&wcd937x->micb_lock);
mutex_init(&wcd937x->ana_tx_clk_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);
@ -2793,6 +2822,7 @@ static void wcd937x_unbind(struct device *dev)
snd_soc_unregister_component(dev);
component_unbind_all(dev, wcd937x);
mutex_destroy(&wcd937x->micb_lock);
mutex_destroy(&wcd937x->ana_tx_clk_lock);
}
static const struct of_device_id wcd937x_dt_match[] = {