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asoc: codecs: wcd938x: Add widget to enable micbias standalone

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

Change-Id: I1f61cd9403d3f83baa199f9c669680d9c7b5c371
Signed-off-by: Karthikeyan Mani <kmani@codeaurora.org>
This commit is contained in:
Karthikeyan Mani
2020-01-17 00:24:39 -08:00
committed by Gerrit - the friendly Code Review server
parent 669b885ac7
commit a5a7ba3b43
2 changed files with 73 additions and 21 deletions
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3
asoc/codecs/wcd938x/internal.h
View File

@@ -1,6 +1,6 @@
/* 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;

91
asoc/codecs/wcd938x/wcd938x.c
View File

@@ -1,6 +1,6 @@
// 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;