1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * mtk-dsp-sof-common.c -- MediaTek dsp sof common ctrl
4 *
5 * Copyright (c) 2022 MediaTek Inc.
6 * Author: Chunxu Li <chunxu.li@mediatek.com>
7 */
8
9 #include "mtk-dsp-sof-common.h"
10 #include "mtk-soc-card.h"
11
12 /* fixup the BE DAI link to match any values from topology */
mtk_sof_dai_link_fixup(struct snd_soc_pcm_runtime * rtd,struct snd_pcm_hw_params * params)13 int mtk_sof_dai_link_fixup(struct snd_soc_pcm_runtime *rtd,
14 struct snd_pcm_hw_params *params)
15 {
16 struct snd_soc_card *card = rtd->card;
17 struct mtk_soc_card_data *soc_card_data = snd_soc_card_get_drvdata(card);
18 struct mtk_sof_priv *sof_priv = soc_card_data->sof_priv;
19 int i, j, ret = 0;
20
21 for (i = 0; i < sof_priv->num_streams; i++) {
22 struct snd_soc_dai *cpu_dai;
23 struct snd_soc_pcm_runtime *runtime;
24 struct snd_soc_dai_link *sof_dai_link = NULL;
25 const struct sof_conn_stream *conn = &sof_priv->conn_streams[i];
26
27 if (conn->normal_link && strcmp(rtd->dai_link->name, conn->normal_link))
28 continue;
29
30 for_each_card_rtds(card, runtime) {
31 if (strcmp(runtime->dai_link->name, conn->sof_link))
32 continue;
33
34 for_each_rtd_cpu_dais(runtime, j, cpu_dai) {
35 if (snd_soc_dai_stream_active(cpu_dai, conn->stream_dir) > 0) {
36 sof_dai_link = runtime->dai_link;
37 break;
38 }
39 }
40 break;
41 }
42
43 if (sof_dai_link && sof_dai_link->be_hw_params_fixup)
44 ret = sof_dai_link->be_hw_params_fixup(runtime, params);
45
46 break;
47 }
48
49 return ret;
50 }
51 EXPORT_SYMBOL_GPL(mtk_sof_dai_link_fixup);
52
mtk_sof_card_probe(struct snd_soc_card * card)53 int mtk_sof_card_probe(struct snd_soc_card *card)
54 {
55 int i;
56 struct snd_soc_dai_link *dai_link;
57
58 /* Set stream_name to help sof bind widgets */
59 for_each_card_prelinks(card, i, dai_link) {
60 if (dai_link->no_pcm && !dai_link->stream_name && dai_link->name)
61 dai_link->stream_name = dai_link->name;
62 }
63
64 return 0;
65 }
66 EXPORT_SYMBOL_GPL(mtk_sof_card_probe);
67
mtk_sof_card_late_probe(struct snd_soc_card * card)68 int mtk_sof_card_late_probe(struct snd_soc_card *card)
69 {
70 struct snd_soc_pcm_runtime *rtd;
71 struct snd_soc_component *sof_comp = NULL;
72 struct mtk_soc_card_data *soc_card_data =
73 snd_soc_card_get_drvdata(card);
74 struct mtk_sof_priv *sof_priv = soc_card_data->sof_priv;
75 int i;
76
77 /* 1. find sof component */
78 for_each_card_rtds(card, rtd) {
79 sof_comp = snd_soc_rtdcom_lookup(rtd, "sof-audio-component");
80 if (sof_comp)
81 break;
82 }
83
84 if (!sof_comp) {
85 dev_info(card->dev, "probe without sof-audio-component\n");
86 return 0;
87 }
88
89 /* 2. add route path and fixup callback */
90 for (i = 0; i < sof_priv->num_streams; i++) {
91 const struct sof_conn_stream *conn = &sof_priv->conn_streams[i];
92 struct snd_soc_pcm_runtime *sof_rtd = NULL;
93 struct snd_soc_pcm_runtime *normal_rtd = NULL;
94
95 for_each_card_rtds(card, rtd) {
96 if (!strcmp(rtd->dai_link->name, conn->sof_link)) {
97 sof_rtd = rtd;
98 continue;
99 }
100 if (!strcmp(rtd->dai_link->name, conn->normal_link)) {
101 normal_rtd = rtd;
102 continue;
103 }
104 if (normal_rtd && sof_rtd)
105 break;
106 }
107 if (normal_rtd && sof_rtd) {
108 int j;
109 struct snd_soc_dai *cpu_dai;
110
111 for_each_rtd_cpu_dais(sof_rtd, j, cpu_dai) {
112 struct snd_soc_dapm_route route;
113 struct snd_soc_dapm_path *p = NULL;
114 struct snd_soc_dapm_widget *widget = snd_soc_dai_get_widget(cpu_dai, conn->stream_dir);
115
116 memset(&route, 0, sizeof(route));
117 if (conn->stream_dir == SNDRV_PCM_STREAM_CAPTURE && widget) {
118 snd_soc_dapm_widget_for_each_sink_path(widget, p) {
119 route.source = conn->sof_dma;
120 route.sink = p->sink->name;
121 snd_soc_dapm_add_routes(&card->dapm, &route, 1);
122 }
123 } else if (conn->stream_dir == SNDRV_PCM_STREAM_PLAYBACK && widget) {
124 snd_soc_dapm_widget_for_each_source_path(widget, p) {
125 route.source = p->source->name;
126 route.sink = conn->sof_dma;
127 snd_soc_dapm_add_routes(&card->dapm, &route, 1);
128 }
129 } else {
130 dev_err(cpu_dai->dev, "stream dir and widget not pair\n");
131 }
132 }
133
134 sof_rtd->dai_link->be_hw_params_fixup =
135 sof_comp->driver->be_hw_params_fixup;
136 if (sof_priv->sof_dai_link_fixup)
137 normal_rtd->dai_link->be_hw_params_fixup =
138 sof_priv->sof_dai_link_fixup;
139 else
140 normal_rtd->dai_link->be_hw_params_fixup = mtk_sof_dai_link_fixup;
141 }
142 }
143
144 return 0;
145 }
146 EXPORT_SYMBOL_GPL(mtk_sof_card_late_probe);
147
mtk_sof_dailink_parse_of(struct snd_soc_card * card,struct device_node * np,const char * propname,struct snd_soc_dai_link * pre_dai_links,int pre_num_links)148 int mtk_sof_dailink_parse_of(struct snd_soc_card *card, struct device_node *np,
149 const char *propname, struct snd_soc_dai_link *pre_dai_links,
150 int pre_num_links)
151 {
152 struct device *dev = card->dev;
153 struct snd_soc_dai_link *parsed_dai_link;
154 const char *dai_name = NULL;
155 int i, j, ret, num_links, parsed_num_links = 0;
156
157 num_links = of_property_count_strings(np, "mediatek,dai-link");
158 if (num_links < 0 || num_links > card->num_links) {
159 dev_dbg(dev, "number of dai-link is invalid\n");
160 return -EINVAL;
161 }
162
163 parsed_dai_link = devm_kcalloc(dev, num_links, sizeof(*parsed_dai_link), GFP_KERNEL);
164 if (!parsed_dai_link)
165 return -ENOMEM;
166
167 for (i = 0; i < num_links; i++) {
168 ret = of_property_read_string_index(np, propname, i, &dai_name);
169 if (ret) {
170 dev_dbg(dev, "ASoC: Property '%s' index %d could not be read: %d\n",
171 propname, i, ret);
172 return ret;
173 }
174 dev_dbg(dev, "ASoC: Property get dai_name:%s\n", dai_name);
175 for (j = 0; j < pre_num_links; j++) {
176 if (!strcmp(dai_name, pre_dai_links[j].name)) {
177 memcpy(&parsed_dai_link[parsed_num_links++], &pre_dai_links[j],
178 sizeof(struct snd_soc_dai_link));
179 break;
180 }
181 }
182 }
183
184 if (parsed_num_links != num_links)
185 return -EINVAL;
186
187 card->dai_link = parsed_dai_link;
188 card->num_links = parsed_num_links;
189
190 return 0;
191 }
192 EXPORT_SYMBOL_GPL(mtk_sof_dailink_parse_of);
193