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");
42 ret
= snd_soc_of_parse_aux_devs(card
, "aux-devs");
47 num_links
= of_get_child_count(dev
->of_node
);
49 /* Allocate the DAI link array */
50 card
->dai_link
= devm_kcalloc(dev
, num_links
, sizeof(*link
), GFP_KERNEL
);
54 card
->num_links
= num_links
;
55 link
= card
->dai_link
;
57 for_each_child_of_node(dev
->of_node
, np
) {
58 dlc
= devm_kzalloc(dev
, 2 * sizeof(*dlc
), GFP_KERNEL
);
65 link
->platforms
= &dlc
[1];
68 link
->num_platforms
= 1;
70 ret
= of_property_read_string(np
, "link-name", &link
->name
);
72 dev_err(card
->dev
, "error getting codec dai_link name\n");
76 cpu
= of_get_child_by_name(np
, "cpu");
77 platform
= of_get_child_by_name(np
, "platform");
78 codec
= of_get_child_by_name(np
, "codec");
81 dev_err(dev
, "%s: Can't find cpu DT node\n", link
->name
);
86 ret
= of_parse_phandle_with_args(cpu
, "sound-dai",
87 "#sound-dai-cells", 0, &args
);
89 dev_err(card
->dev
, "%s: error getting cpu phandle\n", link
->name
);
92 link
->cpus
->of_node
= args
.np
;
93 link
->id
= args
.args
[0];
95 ret
= snd_soc_of_get_dai_name(cpu
, &link
->cpus
->dai_name
);
97 if (ret
!= -EPROBE_DEFER
)
98 dev_err(card
->dev
, "%s: error getting cpu dai name: %d\n",
104 link
->platforms
->of_node
= of_parse_phandle(platform
,
107 if (!link
->platforms
->of_node
) {
108 dev_err(card
->dev
, "%s: platform dai not found\n", link
->name
);
113 link
->platforms
->of_node
= link
->cpus
->of_node
;
117 ret
= snd_soc_of_get_dai_link_codecs(dev
, codec
, link
);
119 if (ret
!= -EPROBE_DEFER
)
120 dev_err(card
->dev
, "%s: codec dai not found: %d\n",
128 link
->ignore_pmdown_time
= 1;
132 dlc
= devm_kzalloc(dev
, sizeof(*dlc
), GFP_KERNEL
);
139 link
->num_codecs
= 1;
141 link
->codecs
->dai_name
= "snd-soc-dummy-dai";
142 link
->codecs
->name
= "snd-soc-dummy";
146 if (platform
|| !codec
) {
148 snd_soc_dai_link_set_capabilities(link
);
149 link
->ignore_suspend
= 1;
153 link
->stream_name
= link
->name
;
158 of_node_put(platform
);
165 of_node_put(platform
);
170 EXPORT_SYMBOL(qcom_snd_parse_of
);
172 MODULE_LICENSE("GPL v2");