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ASoC: wcd938x: add support to retrieve codec variant

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Machine driver requires a mechanism to know the codec variant
to limit supported configurations respective to that codec.
Add a function to return the wcd938x codec variant.

CRs-Fixed: 2488322
Change-Id: I16631cccb3abd32c933389e110e5b5a6b762a0e2
Signed-off-by: Vignesh Kulothungan <vigneshk@codeaurora.org>
This commit is contained in:
Vignesh Kulothungan 2019-07-19 10:17:55 -07:00
commit c001b153fc
2 changed files with 36 additions and 6 deletions
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30
asoc/codecs/wcd938x/wcd938x.c
View file

@ -23,6 +23,7 @@
#include "internal.h"
#include "wcd938x-registers.h"
#include "wcd938x.h"
#define WCD938X_DRV_NAME "wcd938x_codec"
#define NUM_SWRS_DT_PARAMS 5
@ -39,11 +40,6 @@
#define ADC_MODE_VAL_ULP1 0x09
#define ADC_MODE_VAL_ULP2 0x0B
enum {
WCD9380 = 0,
WCD9385 = 5,
};
enum {
CODEC_TX = 0,
CODEC_RX,
@ -2680,6 +2676,30 @@ static struct snd_info_entry_ops wcd938x_variant_ops = {
.read = wcd938x_variant_read,
};
/*
* wcd938x_get_codec_variant
* @component: component instance
*
* Return: codec variant or -EINVAL in error.
*/
int wcd938x_get_codec_variant(struct snd_soc_component *component)
{
struct wcd938x_priv *priv = NULL;
if (!component)
return -EINVAL;
priv = snd_soc_component_get_drvdata(component);
if (!priv) {
dev_err(component->dev,
"%s:wcd938x not probed\n", __func__);
return 0;
}
return priv->variant;
}
EXPORT_SYMBOL(wcd938x_get_codec_variant);
/*
* wcd938x_info_create_codec_entry - creates wcd938x module
* @codec_root: The parent directory

12
asoc/codecs/wcd938x/wcd938x.h
View file

@ -1,19 +1,29 @@
/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Copyright (c) 2018, The Linux Foundation. All rights reserved.
* Copyright (c) 2018-2019, The Linux Foundation. All rights reserved.
*/
#ifndef _WCD938X_H
#define _WCD938X_H
enum {
WCD9380 = 0,
WCD9385 = 5,
};
#ifdef CONFIG_SND_SOC_WCD938X
extern int wcd938x_info_create_codec_entry(struct snd_info_entry *codec_root,
struct snd_soc_component *component);
extern int wcd938x_get_codec_variant(struct snd_soc_component *component);
#else
extern int wcd938x_info_create_codec_entry(struct snd_info_entry *codec_root,
struct snd_soc_component *component)
{
return 0;
}
extern int wcd938x_get_codec_variant(struct snd_soc_component *component)
{
return 0;
}
#endif /* CONFIG_SND_SOC_WCD938X */
#endif /* _WCD938X_H */