1 // SPDX-License-Identifier: GPL-2.0
2 // Copyright (c) 2018, Linaro Limited.
3 // Copyright (c) 2018, The Linux Foundation. All rights reserved.
5 #include <linux/module.h>
8 int qcom_snd_parse_of(struct snd_soc_card *card)
10 struct device_node *np;
11 struct device_node *codec = NULL;
12 struct device_node *platform = NULL;
13 struct device_node *cpu = NULL;
14 struct device *dev = card->dev;
15 struct snd_soc_dai_link *link;
16 struct of_phandle_args args;
17 struct snd_soc_dai_link_component *dlc;
20 ret = snd_soc_of_parse_card_name(card, "model");
21 if (ret == 0 && !card->name)
22 /* Deprecated, only for compatibility with old device trees */
23 ret = snd_soc_of_parse_card_name(card, "qcom,model");
25 dev_err(dev, "Error parsing card name: %d\n", ret);
30 if (of_property_read_bool(dev->of_node, "audio-routing")) {
31 ret = snd_soc_of_parse_audio_routing(card, "audio-routing");
35 /* Deprecated, only for compatibility with old device trees */
36 if (of_property_read_bool(dev->of_node, "qcom,audio-routing")) {
37 ret = snd_soc_of_parse_audio_routing(card, "qcom,audio-routing");
43 num_links = of_get_child_count(dev->of_node);
45 /* Allocate the DAI link array */
46 card->dai_link = devm_kcalloc(dev, num_links, sizeof(*link), GFP_KERNEL);
50 card->num_links = num_links;
51 link = card->dai_link;
53 for_each_child_of_node(dev->of_node, np) {
54 dlc = devm_kzalloc(dev, 2 * sizeof(*dlc), GFP_KERNEL);
59 link->platforms = &dlc[1];
62 link->num_platforms = 1;
64 ret = of_property_read_string(np, "link-name", &link->name);
66 dev_err(card->dev, "error getting codec dai_link name\n");
70 cpu = of_get_child_by_name(np, "cpu");
71 platform = of_get_child_by_name(np, "platform");
72 codec = of_get_child_by_name(np, "codec");
75 dev_err(dev, "%s: Can't find cpu DT node\n", link->name);
80 ret = of_parse_phandle_with_args(cpu, "sound-dai",
81 "#sound-dai-cells", 0, &args);
83 dev_err(card->dev, "%s: error getting cpu phandle\n", link->name);
86 link->cpus->of_node = args.np;
87 link->id = args.args[0];
89 ret = snd_soc_of_get_dai_name(cpu, &link->cpus->dai_name);
91 if (ret != -EPROBE_DEFER)
92 dev_err(card->dev, "%s: error getting cpu dai name: %d\n",
98 link->platforms->of_node = of_parse_phandle(platform,
101 if (!link->platforms->of_node) {
102 dev_err(card->dev, "%s: platform dai not found\n", link->name);
107 link->platforms->of_node = link->cpus->of_node;
111 ret = snd_soc_of_get_dai_link_codecs(dev, codec, link);
113 if (ret != -EPROBE_DEFER)
114 dev_err(card->dev, "%s: codec dai not found: %d\n",
122 link->ignore_pmdown_time = 1;
126 dlc = devm_kzalloc(dev, sizeof(*dlc), GFP_KERNEL);
131 link->num_codecs = 1;
133 link->codecs->dai_name = "snd-soc-dummy-dai";
134 link->codecs->name = "snd-soc-dummy";
138 if (platform || !codec) {
140 snd_soc_dai_link_set_capabilities(link);
141 link->ignore_suspend = 1;
145 link->stream_name = link->name;
150 of_node_put(platform);
158 of_node_put(platform);
161 EXPORT_SYMBOL(qcom_snd_parse_of);
163 MODULE_LICENSE("GPL v2");