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