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Commit b2c0c896 authored by Aditya Bavanari's avatar Aditya Bavanari Committed by Prasad Kumpatla
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asoc: codecs: Add variant entry support for wcd937x 



Add variant entry support for wcd937x codec to
differentiate between wcd9370 and wcd9375 variants.

Change-Id: Ife20d14462a0b0968e0458471af3823872592e10
Signed-off-by: default avatarPrasad Kumpatla <nkumpat@codeaurora.org>
parent f03bd8bb

asoc/codecs/wcd937x/internal.h

+3 −1
Original line number Diff line number Diff line 
/* Copyright (c) 2018-2019, The Linux Foundation. All rights reserved.

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



 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License version 2 and
@@ -90,6 +90,8 @@ struct wcd937x_priv { 
	/* Entry for version info */

	struct snd_info_entry *entry;

	struct snd_info_entry *version_entry;

	/*Entry for Variant info*/

	struct snd_info_entry *variant_entry;

	int ana_clk_count;

	struct mutex ana_tx_clk_lock;

};

asoc/codecs/wcd937x/wcd937x.c

+58 −2
Original line number Diff line number Diff line 
/*

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

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

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License version 2 and
@@ -35,6 +35,7 @@ 


#define WCD9370_VARIANT 0

#define WCD9375_VARIANT 5

#define WCD937X_VARIANT_ENTRY_SIZE 32



#define NUM_SWRS_DT_PARAMS 5
@@ -2100,12 +2101,47 @@ static struct snd_info_entry_ops wcd937x_info_ops = { 
	.read = wcd937x_version_read,

};





static ssize_t wcd937x_variant_read(struct snd_info_entry *entry,

				    void *file_private_data,

				    struct file *file,

				    char __user *buf, size_t count,

				    loff_t pos)

{

	struct wcd937x_priv *priv;

	char buffer[WCD937X_VARIANT_ENTRY_SIZE];

	int len = 0;



	priv = (struct wcd937x_priv *) entry->private_data;

	if (!priv) {

		pr_err("%s: wcd937x priv is null\n", __func__);

		return -EINVAL;

	}



	switch (priv->variant) {

	case WCD9370_VARIANT:

		len = snprintf(buffer, sizeof(buffer), "WCD9370\n");

		break;

	case WCD9375_VARIANT:

		len = snprintf(buffer, sizeof(buffer), "WCD9375\n");

		break;

	default:

		len = snprintf(buffer, sizeof(buffer), "VER_UNDEFINED\n");

	}



	return simple_read_from_buffer(buf, count, &pos, buffer, len);

}



static struct snd_info_entry_ops wcd937x_variant_ops = {

	.read = wcd937x_variant_read,

};



/*

 * wcd937x_info_create_codec_entry - creates wcd937x module

 * @codec_root: The parent directory

 * @codec: Codec instance

 *

 * Creates wcd937x module and version entry under the given

 * Creates wcd937x module, variant and version entry under the given

 * parent directory.

 *

 * Return: 0 on success or negative error code on failure.
@@ -2114,6 +2150,7 @@ int wcd937x_info_create_codec_entry(struct snd_info_entry *codec_root, 
				   struct snd_soc_codec *codec)

{

	struct snd_info_entry *version_entry;

	struct snd_info_entry *variant_entry;

	struct wcd937x_priv *priv;

	struct snd_soc_card *card;
@@ -2154,6 +2191,25 @@ int wcd937x_info_create_codec_entry(struct snd_info_entry *codec_root, 
	}

	priv->version_entry = version_entry;



	variant_entry = snd_info_create_card_entry(card->snd_card,

						   "variant",

						   priv->entry);

	if (!variant_entry) {

		dev_dbg(codec->dev, "%s: failed to create wcd937x variant entry\n",

			__func__);

		return -ENOMEM;

	}



	variant_entry->private_data = priv;

	variant_entry->size = WCD937X_VARIANT_ENTRY_SIZE;

	variant_entry->content = SNDRV_INFO_CONTENT_DATA;

	variant_entry->c.ops = &wcd937x_variant_ops;



	if (snd_info_register(variant_entry) < 0) {

		snd_info_free_entry(variant_entry);

		return -ENOMEM;

	}

	priv->variant_entry = variant_entry;

	return 0;

}

EXPORT_SYMBOL(wcd937x_info_create_codec_entry);