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Commit 13faf538 authored by Vatsal Bucha's avatar Vatsal Bucha Committed by Meng Wang
Browse files

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



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: default avatarVatsal Bucha <vbucha@codeaurora.org>
parent 256a8567

asoc/codecs/wcd937x/internal.h

+2 −0
Original line number Diff line number Diff line
@@ -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 {

asoc/codecs/wcd937x/wcd937x.c

+31 −1
Original line number Diff line number Diff line
@@ -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);

		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[] = {