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ASoC: codecs: Adds support for dummy codec

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Change-Id: I86cb74994d49178525e15b61b5056fd3995e904d
Signed-off-by: Sugar Zhang <sugar.zhang@rock-chips.com>
This commit is contained in:
Sugar Zhang
2019-11-21 15:14:23 +08:00
committed by Tao Huang
parent daf07e4866
commit faaf476d0a
3 changed files with 32 additions and 48 deletions
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4
sound/soc/codecs/Kconfig
View File

@@ -75,6 +75,7 @@ config SND_SOC_ALL_CODECS
select SND_SOC_DA732X if I2C
select SND_SOC_DA9055 if I2C
select SND_SOC_DMIC if GPIOLIB
select SND_SOC_DUMMY_CODEC
select SND_SOC_ES8316 if I2C
select SND_SOC_ES8328_SPI if SPI_MASTER
select SND_SOC_ES8328_I2C if I2C
@@ -583,6 +584,9 @@ config SND_SOC_DA9055
config SND_SOC_DMIC
tristate
config SND_SOC_DUMMY_CODEC
tristate "Dummy CODEC"
config SND_SOC_HDMI_CODEC
tristate
select SND_PCM_ELD

2
sound/soc/codecs/Makefile
View File

@@ -70,6 +70,7 @@ snd-soc-da7219-objs := da7219.o da7219-aad.o
snd-soc-da732x-objs := da732x.o
snd-soc-da9055-objs := da9055.o
snd-soc-dmic-objs := dmic.o
snd-soc-dummy-codec-objs := dummy-codec.o
snd-soc-es7134-objs := es7134.o
snd-soc-es7241-objs := es7241.o
snd-soc-es8316-objs := es8316.o
@@ -336,6 +337,7 @@ obj-$(CONFIG_SND_SOC_DA7219) += snd-soc-da7219.o
obj-$(CONFIG_SND_SOC_DA732X) += snd-soc-da732x.o
obj-$(CONFIG_SND_SOC_DA9055) += snd-soc-da9055.o
obj-$(CONFIG_SND_SOC_DMIC) += snd-soc-dmic.o
obj-$(CONFIG_SND_SOC_DUMMY_CODEC) += snd-soc-dummy-codec.o
obj-$(CONFIG_SND_SOC_ES7134) += snd-soc-es7134.o
obj-$(CONFIG_SND_SOC_ES7241) += snd-soc-es7241.o
obj-$(CONFIG_SND_SOC_ES8316) += snd-soc-es8316.o

74
sound/soc/codecs/dummy-codec.c
View File

@@ -1,18 +1,8 @@
/*
* dummy_codec.c -- dummy audio codec for rockchip
*
* Copyright (C) 2018 Fuzhou Rockchip Electronics Co., Ltd
*
* This software is licensed under the terms of the GNU General Public
* License version 2, as published by the Free Software Foundation, and
* may be copied, distributed, and modified under those terms.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
*/
// SPDX-License-Identifier: GPL-2.0
//
// dummy_codec.c -- dummy audio codec for rockchip
//
// Copyright (C) 2018 Fuzhou Rockchip Electronics Co., Ltd
#include <linux/clk.h>
#include <linux/module.h>
@@ -25,29 +15,28 @@
#include <sound/initval.h>
struct dummy_codec_priv {
struct snd_soc_codec *codec;
struct snd_soc_component *component;
struct clk *mclk;
};
static int dummy_codec_startup(struct snd_pcm_substream *substream,
struct snd_soc_dai *dai)
{
struct snd_soc_codec *codec = dai->codec;
struct dummy_codec_priv *dummy_codec = snd_soc_codec_get_drvdata(codec);
struct dummy_codec_priv *dcp = snd_soc_component_get_drvdata(dai->component);
if (!IS_ERR(dcp->mclk))
clk_prepare_enable(dcp->mclk);
if (!IS_ERR(dummy_codec->mclk))
clk_prepare_enable(dummy_codec->mclk);
return 0;
}
static void dummy_codec_shutdown(struct snd_pcm_substream *substream,
struct snd_soc_dai *dai)
{
struct snd_soc_codec *codec = dai->codec;
struct dummy_codec_priv *dummy_codec = snd_soc_codec_get_drvdata(codec);
struct dummy_codec_priv *dcp = snd_soc_component_get_drvdata(dai->component);
if (!IS_ERR(dummy_codec->mclk))
clk_disable_unprepare(dummy_codec->mclk);
if (!IS_ERR(dcp->mclk))
clk_disable_unprepare(dcp->mclk);
}
static struct snd_soc_dai_ops dummy_codec_dai_ops = {
@@ -80,39 +69,29 @@ struct snd_soc_dai_driver dummy_dai = {
.ops = &dummy_codec_dai_ops,
};
static struct snd_soc_codec_driver soc_dummy_codec;
static const struct snd_soc_component_driver soc_dummy_codec;
static int rockchip_dummy_codec_probe(struct platform_device *pdev)
{
struct dummy_codec_priv *codec_priv;
struct dummy_codec_priv *dcp;
codec_priv = devm_kzalloc(&pdev->dev, sizeof(*codec_priv),
GFP_KERNEL);
if (!codec_priv)
dcp = devm_kzalloc(&pdev->dev, sizeof(*dcp), GFP_KERNEL);
if (!dcp)
return -ENOMEM;
platform_set_drvdata(pdev, codec_priv);
codec_priv->mclk = devm_clk_get(&pdev->dev, "mclk");
if (IS_ERR(codec_priv->mclk)) {
/* some devices may not need mclk,so warnnig */
dev_warn(&pdev->dev, "Unable to get mclk\n");
if (PTR_ERR(codec_priv->mclk) == -EPROBE_DEFER)
platform_set_drvdata(pdev, dcp);
/* optional mclk, if needs, assign mclk in dts node */
dcp->mclk = devm_clk_get(&pdev->dev, "mclk");
if (IS_ERR(dcp->mclk)) {
if (PTR_ERR(dcp->mclk) == -EPROBE_DEFER)
return -EPROBE_DEFER;
else if (PTR_ERR(codec_priv->mclk) != -ENOENT)
else if (PTR_ERR(dcp->mclk) != -ENOENT)
return -EINVAL;
} else {
dev_info(&pdev->dev, "get mclk success\n");
}
return snd_soc_register_codec(&pdev->dev, &soc_dummy_codec,
&dummy_dai, 1);
}
static int rockchip_dummy_codec_remove(struct platform_device *pdev)
{
snd_soc_unregister_codec(&pdev->dev);
return 0;
return devm_snd_soc_register_component(&pdev->dev, &soc_dummy_codec,
&dummy_dai, 1);
}
static const struct of_device_id rockchip_dummy_codec_of_match[] = {
@@ -127,7 +106,6 @@ static struct platform_driver rockchip_dummy_codec_driver = {
.of_match_table = of_match_ptr(rockchip_dummy_codec_of_match),
},
.probe = rockchip_dummy_codec_probe,
.remove = rockchip_dummy_codec_remove,
};
module_platform_driver(rockchip_dummy_codec_driver);