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Commit a5a7ba3b authored by Karthikeyan Mani's avatar Karthikeyan Mani Committed by Gerrit - the friendly Code Review server
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asoc: codecs: wcd938x: Add widget to enable micbias standalone 



Add widgets to enable mic bias standlaone without
dependency on any use case.

Change-Id: I1f61cd9403d3f83baa199f9c669680d9c7b5c371
Signed-off-by: default avatarKarthikeyan Mani <kmani@codeaurora.org>
parent 669b885a

asoc/codecs/wcd938x/internal.h

+2 −1
Original line number Diff line number Diff line 
/* SPDX-License-Identifier: GPL-2.0-only */

/*

 * Copyright (c) 2018-2019, The Linux Foundation. All rights reserved.

 * Copyright (c) 2018-2020, The Linux Foundation. All rights reserved.

 */



#ifndef _WCD938X_INTERNAL_H
@@ -55,6 +55,7 @@ struct wcd938x_priv { 
	struct device_node *wcd_rst_np;



	struct mutex micb_lock;

	struct mutex wakeup_lock;

	s32 dmic_0_1_clk_cnt;

	s32 dmic_2_3_clk_cnt;

	s32 dmic_4_5_clk_cnt;

asoc/codecs/wcd938x/wcd938x.c

+71 −20
Original line number Diff line number Diff line 
// SPDX-License-Identifier: GPL-2.0-only

/*

 * Copyright (c) 2018-2019, The Linux Foundation. All rights reserved.

 * Copyright (c) 2018-2020, The Linux Foundation. All rights reserved.

 */



#include <linux/module.h>
@@ -43,6 +43,11 @@ 


#define NUM_ATTEMPTS 5



#define DAPM_MICBIAS1_STANDALONE "MIC BIAS1 Standalone"

#define DAPM_MICBIAS2_STANDALONE "MIC BIAS2 Standalone"

#define DAPM_MICBIAS3_STANDALONE "MIC BIAS3 Standalone"

#define DAPM_MICBIAS4_STANDALONE "MIC BIAS4 Standalone"



enum {

	CODEC_TX = 0,

	CODEC_RX,
@@ -2033,6 +2038,55 @@ static int wcd938x_codec_enable_micbias_pullup(struct snd_soc_dapm_widget *w, 
	return __wcd938x_codec_enable_micbias_pullup(w, event);

}



static int wcd938x_wakeup(void *handle, bool enable)

{

	struct wcd938x_priv *priv;

	int ret = 0;



	if (!handle) {

		pr_err("%s: NULL handle\n", __func__);

		return -EINVAL;

	}

	priv = (struct wcd938x_priv *)handle;

	if (!priv->tx_swr_dev) {

		pr_err("%s: tx swr dev is NULL\n", __func__);

		return -EINVAL;

	}

	mutex_lock(&priv->wakeup_lock);

	if (enable)

		ret = swr_device_wakeup_vote(priv->tx_swr_dev);

	else

		ret = swr_device_wakeup_unvote(priv->tx_swr_dev);

	mutex_unlock(&priv->wakeup_lock);



	return ret;

}



static int wcd938x_codec_force_enable_micbias(struct snd_soc_dapm_widget *w,

					    struct snd_kcontrol *kcontrol,

					    int event)

{

	int ret = 0;

	struct snd_soc_component *component =

			snd_soc_dapm_to_component(w->dapm);

	struct wcd938x_priv *wcd938x = snd_soc_component_get_drvdata(component);



	switch (event) {

	case SND_SOC_DAPM_PRE_PMU:

		wcd938x_wakeup(wcd938x, true);

		ret = __wcd938x_codec_enable_micbias(w, SND_SOC_DAPM_PRE_PMU);

		wcd938x_wakeup(wcd938x, false);

		break;

	case SND_SOC_DAPM_POST_PMD:

		wcd938x_wakeup(wcd938x, true);

		ret = __wcd938x_codec_enable_micbias(w, SND_SOC_DAPM_POST_PMD);

		wcd938x_wakeup(wcd938x, false);

		break;

	}



	return ret;

}



static inline int wcd938x_tx_path_get(const char *wname,

				      unsigned int *path_num)

{
@@ -2641,6 +2695,19 @@ static const struct snd_soc_dapm_widget wcd938x_dapm_widgets[] = { 
				SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMU |

				SND_SOC_DAPM_POST_PMD),



	SND_SOC_DAPM_SUPPLY(DAPM_MICBIAS1_STANDALONE, SND_SOC_NOPM, 0, 0,

		wcd938x_codec_force_enable_micbias,

		SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),

	SND_SOC_DAPM_SUPPLY(DAPM_MICBIAS2_STANDALONE, SND_SOC_NOPM, 0, 0,

		wcd938x_codec_force_enable_micbias,

		SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),

	SND_SOC_DAPM_SUPPLY(DAPM_MICBIAS3_STANDALONE, SND_SOC_NOPM, 0, 0,

		wcd938x_codec_force_enable_micbias,

		SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),

	SND_SOC_DAPM_SUPPLY(DAPM_MICBIAS4_STANDALONE, SND_SOC_NOPM, 0, 0,

		wcd938x_codec_force_enable_micbias,

		SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),



	SND_SOC_DAPM_SUPPLY_S("CLS_H_PORT", 1, SND_SOC_NOPM, 0, 0,

			     wcd938x_enable_clsh,

			     SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
@@ -3537,25 +3604,6 @@ static int wcd938x_add_slave_components(struct device *dev, 
	return 0;

}



static int wcd938x_wakeup(void *handle, bool enable)

{

	struct wcd938x_priv *priv;



	if (!handle) {

		pr_err("%s: NULL handle\n", __func__);

		return -EINVAL;

	}

	priv = (struct wcd938x_priv *)handle;

	if (!priv->tx_swr_dev) {

		pr_err("%s: tx swr dev is NULL\n", __func__);

		return -EINVAL;

	}

	if (enable)

		return swr_device_wakeup_vote(priv->tx_swr_dev);

	else

		return swr_device_wakeup_unvote(priv->tx_swr_dev);

}



static int wcd938x_probe(struct platform_device *pdev)

{

	struct component_match *match = NULL;
@@ -3633,6 +3681,7 @@ static int wcd938x_probe(struct platform_device *pdev) 
		goto err;

	}



	mutex_init(&wcd938x->wakeup_lock);

	mutex_init(&wcd938x->micb_lock);

	ret = wcd938x_add_slave_components(dev, &match);

	if (ret)
@@ -3647,6 +3696,7 @@ static int wcd938x_probe(struct platform_device *pdev) 


err_lock_init:

	mutex_destroy(&wcd938x->micb_lock);

	mutex_destroy(&wcd938x->wakeup_lock);

err:

	return ret;

}
@@ -3658,6 +3708,7 @@ static int wcd938x_remove(struct platform_device *pdev) 
	wcd938x = platform_get_drvdata(pdev);

	component_master_del(&pdev->dev, &wcd938x_comp_ops);

	mutex_destroy(&wcd938x->micb_lock);

	mutex_destroy(&wcd938x->wakeup_lock);

	dev_set_drvdata(&pdev->dev, NULL);



	return 0;