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ASoC: qcom: Add support to parse common audio device nodes 

This adds support to parse cpu, platform and codec
device nodes and add them in dai-links. Also, update
apq8096 machine driver to use the common API.

Acked-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Signed-off-by: Rohit kumar <rohitkr@codeaurora.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
hifive-unleashed-5.1
Rohit kumar 2018-08-01 14:31:08 +05:30 committed by Mark Brown
parent 0c901e8cea
commit c25e295cd7
No known key found for this signature in database
GPG Key ID: 24D68B725D5487D0
4 changed files with 136 additions and 101 deletions
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2
sound/soc/qcom/Makefile
View File

@ -13,7 +13,7 @@ obj-$(CONFIG_SND_SOC_LPASS_APQ8016) += snd-soc-lpass-apq8016.o
# Machine
snd-soc-storm-objs := storm.o
snd-soc-apq8016-sbc-objs := apq8016_sbc.o
snd-soc-apq8096-objs := apq8096.o
snd-soc-apq8096-objs := apq8096.o common.o
obj-$(CONFIG_SND_SOC_STORM) += snd-soc-storm.o
obj-$(CONFIG_SND_SOC_APQ8016_SBC) += snd-soc-apq8016-sbc.o

111
sound/soc/qcom/apq8096.c
View File

@ -9,6 +9,7 @@
#include <sound/soc.h>
#include <sound/soc-dapm.h>
#include <sound/pcm.h>
#include "common.h"
static int apq8096_be_hw_params_fixup(struct snd_soc_pcm_runtime *rtd,
struct snd_pcm_hw_params *params)
@ -24,109 +25,16 @@ static int apq8096_be_hw_params_fixup(struct snd_soc_pcm_runtime *rtd,
return 0;
}
static int apq8096_sbc_parse_of(struct snd_soc_card *card)
static void apq8096_add_be_ops(struct snd_soc_card *card)
{
struct device_node *np;
struct device_node *codec = NULL;
struct device_node *platform = NULL;
struct device_node *cpu = NULL;
struct device *dev = card->dev;
struct snd_soc_dai_link *link;
int ret, num_links;
struct snd_soc_dai_link *link = card->dai_link;
int i, num_links = card->num_links;
ret = snd_soc_of_parse_card_name(card, "qcom,model");
if (ret) {
dev_err(dev, "Error parsing card name: %d\n", ret);
return ret;
}
/* DAPM routes */
if (of_property_read_bool(dev->of_node, "qcom,audio-routing")) {
ret = snd_soc_of_parse_audio_routing(card,
"qcom,audio-routing");
if (ret)
return ret;
}
/* Populate links */
num_links = of_get_child_count(dev->of_node);
/* Allocate the DAI link array */
card->dai_link = kcalloc(num_links, sizeof(*link), GFP_KERNEL);
if (!card->dai_link)
return -ENOMEM;
card->num_links = num_links;
link = card->dai_link;
for_each_child_of_node(dev->of_node, np) {
cpu = of_get_child_by_name(np, "cpu");
if (!cpu) {
dev_err(dev, "Can't find cpu DT node\n");
ret = -EINVAL;
goto err;
}
link->cpu_of_node = of_parse_phandle(cpu, "sound-dai", 0);
if (!link->cpu_of_node) {
dev_err(card->dev, "error getting cpu phandle\n");
ret = -EINVAL;
goto err;
}
ret = snd_soc_of_get_dai_name(cpu, &link->cpu_dai_name);
if (ret) {
dev_err(card->dev, "error getting cpu dai name\n");
goto err;
}
platform = of_get_child_by_name(np, "platform");
codec = of_get_child_by_name(np, "codec");
if (codec && platform) {
link->platform_of_node = of_parse_phandle(platform,
"sound-dai",
0);
if (!link->platform_of_node) {
dev_err(card->dev, "platform dai not found\n");
ret = -EINVAL;
goto err;
}
ret = snd_soc_of_get_dai_link_codecs(dev, codec, link);
if (ret < 0) {
dev_err(card->dev, "codec dai not found\n");
goto err;
}
link->no_pcm = 1;
link->ignore_pmdown_time = 1;
for (i = 0; i < num_links; i++) {
if (link->no_pcm == 1)
link->be_hw_params_fixup = apq8096_be_hw_params_fixup;
} else {
link->platform_of_node = link->cpu_of_node;
link->codec_dai_name = "snd-soc-dummy-dai";
link->codec_name = "snd-soc-dummy";
link->dynamic = 1;
}
link->ignore_suspend = 1;
ret = of_property_read_string(np, "link-name", &link->name);
if (ret) {
dev_err(card->dev, "error getting codec dai_link name\n");
goto err;
}
link->dpcm_playback = 1;
link->dpcm_capture = 1;
link->stream_name = link->name;
link++;
}
return 0;
err:
of_node_put(cpu);
of_node_put(codec);
of_node_put(platform);
kfree(card->dai_link);
return ret;
}
static int apq8096_platform_probe(struct platform_device *pdev)
@ -142,18 +50,21 @@ static int apq8096_platform_probe(struct platform_device *pdev)
card->dev = dev;
card->auto_bind = true;
dev_set_drvdata(dev, card);
ret = apq8096_sbc_parse_of(card);
ret = qcom_snd_parse_of(card);
if (ret) {
dev_err(dev, "Error parsing OF data\n");
goto err;
}
apq8096_add_be_ops(card);
ret = snd_soc_register_card(card);
if (ret)
goto err;
goto err_card_register;
return 0;
err_card_register:
kfree(card->dai_link);
err:
kfree(card);
return ret;

112
sound/soc/qcom/common.c 100644
View File

@ -0,0 +1,112 @@
// SPDX-License-Identifier: GPL-2.0
// Copyright (c) 2018, Linaro Limited.
// Copyright (c) 2018, The Linux Foundation. All rights reserved.
#include <linux/module.h>
#include "common.h"
int qcom_snd_parse_of(struct snd_soc_card *card)
{
struct device_node *np;
struct device_node *codec = NULL;
struct device_node *platform = NULL;
struct device_node *cpu = NULL;
struct device *dev = card->dev;
struct snd_soc_dai_link *link;
int ret, num_links;
ret = snd_soc_of_parse_card_name(card, "model");
if (ret) {
dev_err(dev, "Error parsing card name: %d\n", ret);
return ret;
}
/* DAPM routes */
if (of_property_read_bool(dev->of_node, "audio-routing")) {
ret = snd_soc_of_parse_audio_routing(card,
"audio-routing");
if (ret)
return ret;
}
/* Populate links */
num_links = of_get_child_count(dev->of_node);
/* Allocate the DAI link array */
card->dai_link = kcalloc(num_links, sizeof(*link), GFP_KERNEL);
if (!card->dai_link)
return -ENOMEM;
card->num_links = num_links;
link = card->dai_link;
for_each_child_of_node(dev->of_node, np) {
cpu = of_get_child_by_name(np, "cpu");
if (!cpu) {
dev_err(dev, "Can't find cpu DT node\n");
ret = -EINVAL;
goto err;
}
link->cpu_of_node = of_parse_phandle(cpu, "sound-dai", 0);
if (!link->cpu_of_node) {
dev_err(card->dev, "error getting cpu phandle\n");
ret = -EINVAL;
goto err;
}
ret = snd_soc_of_get_dai_name(cpu, &link->cpu_dai_name);
if (ret) {
dev_err(card->dev, "error getting cpu dai name\n");
goto err;
}
platform = of_get_child_by_name(np, "platform");
codec = of_get_child_by_name(np, "codec");
if (codec && platform) {
link->platform_of_node = of_parse_phandle(platform,
"sound-dai",
0);
if (!link->platform_of_node) {
dev_err(card->dev, "platform dai not found\n");
ret = -EINVAL;
goto err;
}
ret = snd_soc_of_get_dai_link_codecs(dev, codec, link);
if (ret < 0) {
dev_err(card->dev, "codec dai not found\n");
goto err;
}
link->no_pcm = 1;
link->ignore_pmdown_time = 1;
} else {
link->platform_of_node = link->cpu_of_node;
link->codec_dai_name = "snd-soc-dummy-dai";
link->codec_name = "snd-soc-dummy";
link->dynamic = 1;
}
link->ignore_suspend = 1;
ret = of_property_read_string(np, "link-name", &link->name);
if (ret) {
dev_err(card->dev, "error getting codec dai_link name\n");
goto err;
}
link->dpcm_playback = 1;
link->dpcm_capture = 1;
link->stream_name = link->name;
link++;
}
return 0;
err:
of_node_put(cpu);
of_node_put(codec);
of_node_put(platform);
kfree(card->dai_link);
return ret;
}
EXPORT_SYMBOL(qcom_snd_parse_of);
MODULE_LICENSE("GPL v2");

12
sound/soc/qcom/common.h 100644
View File

@ -0,0 +1,12 @@
/* SPDX-License-Identifier: GPL-2.0 */
// Copyright (c) 2018, The Linux Foundation. All rights reserved.
#ifndef __QCOM_SND_COMMON_H__
#define __QCOM_SND_COMMON_H__
#include <linux/component.h>
#include <sound/soc.h>
int qcom_snd_parse_of(struct snd_soc_card *card);
#endif