116 lines
2.7 KiB
C
116 lines
2.7 KiB
C
// 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;
|
|
struct of_phandle_args args;
|
|
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;
|
|
}
|
|
|
|
ret = of_parse_phandle_with_args(cpu, "sound-dai",
|
|
"#sound-dai-cells", 0, &args);
|
|
if (ret) {
|
|
dev_err(card->dev, "error getting cpu phandle\n");
|
|
goto err;
|
|
}
|
|
link->cpu_of_node = args.np;
|
|
link->id = args.args[0];
|
|
|
|
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");
|