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 const 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 struct mtk_soc_card_data *soc_card_data = snd_soc_card_get_drvdata(card);
58
59 /* Set stream_name to help sof bind widgets */
60 for_each_card_prelinks(card, i, dai_link) {
61 if (dai_link->no_pcm && !dai_link->stream_name && dai_link->name)
62 dai_link->stream_name = dai_link->name;
63 }
64
65 INIT_LIST_HEAD(&soc_card_data->sof_dai_link_list);
66
67 return 0;
68 }
69 EXPORT_SYMBOL_GPL(mtk_sof_card_probe);
70
mtk_sof_find_tplg_be(struct snd_soc_pcm_runtime * rtd)71 static struct snd_soc_pcm_runtime *mtk_sof_find_tplg_be(struct snd_soc_pcm_runtime *rtd)
72 {
73 struct snd_soc_card *card = rtd->card;
74 struct mtk_soc_card_data *soc_card_data = snd_soc_card_get_drvdata(card);
75 const struct mtk_sof_priv *sof_priv = soc_card_data->sof_priv;
76 struct snd_soc_pcm_runtime *fe;
77 struct snd_soc_pcm_runtime *be;
78 struct snd_soc_dpcm *dpcm;
79 int i, stream;
80
81 for_each_pcm_streams(stream) {
82 fe = NULL;
83 for_each_dpcm_fe(rtd, stream, dpcm) {
84 fe = dpcm->fe;
85 if (fe)
86 break;
87 }
88
89 if (!fe)
90 continue;
91
92 for_each_dpcm_be(fe, stream, dpcm) {
93 be = dpcm->be;
94 if (be == rtd)
95 continue;
96
97 for (i = 0; i < sof_priv->num_streams; i++) {
98 const struct sof_conn_stream *conn = &sof_priv->conn_streams[i];
99
100 if (!strcmp(be->dai_link->name, conn->sof_link))
101 return be;
102 }
103 }
104 }
105
106 return NULL;
107 }
108
109 /* fixup the BE DAI link to match any values from topology */
mtk_sof_check_tplg_be_dai_link_fixup(struct snd_soc_pcm_runtime * rtd,struct snd_pcm_hw_params * params)110 static int mtk_sof_check_tplg_be_dai_link_fixup(struct snd_soc_pcm_runtime *rtd,
111 struct snd_pcm_hw_params *params)
112 {
113 struct snd_soc_card *card = rtd->card;
114 struct mtk_soc_card_data *soc_card_data = snd_soc_card_get_drvdata(card);
115 const struct mtk_sof_priv *sof_priv = soc_card_data->sof_priv;
116 struct snd_soc_pcm_runtime *sof_be;
117 struct mtk_dai_link *dai_link;
118 int ret = 0;
119
120 sof_be = mtk_sof_find_tplg_be(rtd);
121 if (sof_be) {
122 if (sof_priv->sof_dai_link_fixup)
123 ret = sof_priv->sof_dai_link_fixup(rtd, params);
124 else if (sof_be->dai_link->be_hw_params_fixup)
125 ret = sof_be->dai_link->be_hw_params_fixup(sof_be, params);
126 } else {
127 list_for_each_entry(dai_link, &soc_card_data->sof_dai_link_list, list) {
128 if (strcmp(dai_link->name, rtd->dai_link->name) == 0) {
129 if (dai_link->be_hw_params_fixup)
130 ret = dai_link->be_hw_params_fixup(rtd, params);
131
132 break;
133 }
134 }
135 }
136
137 return ret;
138 }
139
mtk_sof_card_late_probe(struct snd_soc_card * card)140 int mtk_sof_card_late_probe(struct snd_soc_card *card)
141 {
142 struct snd_soc_pcm_runtime *rtd;
143 struct snd_soc_component *sof_comp = NULL;
144 struct mtk_soc_card_data *soc_card_data =
145 snd_soc_card_get_drvdata(card);
146 const struct mtk_sof_priv *sof_priv = soc_card_data->sof_priv;
147 struct snd_soc_dai_link *dai_link;
148 struct mtk_dai_link *mtk_dai_link;
149 int i;
150
151 /* 1. find sof component */
152 for_each_card_rtds(card, rtd) {
153 sof_comp = snd_soc_rtdcom_lookup(rtd, "sof-audio-component");
154 if (sof_comp)
155 break;
156 }
157
158 if (!sof_comp) {
159 dev_info(card->dev, "probe without sof-audio-component\n");
160 return 0;
161 }
162
163 /* 2. overwrite all BE fixups, and backup the existing fixup */
164 for_each_card_prelinks(card, i, dai_link) {
165 if (dai_link->be_hw_params_fixup) {
166 mtk_dai_link = devm_kzalloc(card->dev,
167 sizeof(*mtk_dai_link),
168 GFP_KERNEL);
169 if (!mtk_dai_link)
170 return -ENOMEM;
171
172 mtk_dai_link->be_hw_params_fixup = dai_link->be_hw_params_fixup;
173 mtk_dai_link->name = dai_link->name;
174
175 list_add(&mtk_dai_link->list, &soc_card_data->sof_dai_link_list);
176 }
177
178 if (dai_link->no_pcm)
179 dai_link->be_hw_params_fixup = mtk_sof_check_tplg_be_dai_link_fixup;
180 }
181
182 /* 3. add route path and SOF_BE fixup callback */
183 for (i = 0; i < sof_priv->num_streams; i++) {
184 const struct sof_conn_stream *conn = &sof_priv->conn_streams[i];
185 struct snd_soc_pcm_runtime *sof_rtd = NULL;
186
187 for_each_card_rtds(card, rtd) {
188 if (!strcmp(rtd->dai_link->name, conn->sof_link)) {
189 sof_rtd = rtd;
190 break;
191 }
192 }
193 if (sof_rtd) {
194 int j;
195 struct snd_soc_dai *cpu_dai;
196
197 for_each_rtd_cpu_dais(sof_rtd, j, cpu_dai) {
198 struct snd_soc_dapm_route route;
199 struct snd_soc_dapm_path *p = NULL;
200 struct snd_soc_dapm_widget *widget = snd_soc_dai_get_widget(cpu_dai, conn->stream_dir);
201
202 memset(&route, 0, sizeof(route));
203 if (conn->stream_dir == SNDRV_PCM_STREAM_CAPTURE && widget) {
204 snd_soc_dapm_widget_for_each_sink_path(widget, p) {
205 route.source = conn->sof_dma;
206 route.sink = p->sink->name;
207 snd_soc_dapm_add_routes(&card->dapm, &route, 1);
208 }
209 } else if (conn->stream_dir == SNDRV_PCM_STREAM_PLAYBACK && widget) {
210 snd_soc_dapm_widget_for_each_source_path(widget, p) {
211 route.source = p->source->name;
212 route.sink = conn->sof_dma;
213 snd_soc_dapm_add_routes(&card->dapm, &route, 1);
214 }
215 } else {
216 dev_err(cpu_dai->dev, "stream dir and widget not pair\n");
217 }
218 }
219
220 /* overwrite SOF BE fixup */
221 sof_rtd->dai_link->be_hw_params_fixup =
222 sof_comp->driver->be_hw_params_fixup;
223 }
224 }
225
226 return 0;
227 }
228 EXPORT_SYMBOL_GPL(mtk_sof_card_late_probe);
229
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)230 int mtk_sof_dailink_parse_of(struct snd_soc_card *card, struct device_node *np,
231 const char *propname, struct snd_soc_dai_link *pre_dai_links,
232 int pre_num_links)
233 {
234 struct device *dev = card->dev;
235 struct snd_soc_dai_link *parsed_dai_link;
236 const char *dai_name = NULL;
237 int i, j, ret, num_links, parsed_num_links = 0;
238
239 num_links = of_property_count_strings(np, "mediatek,dai-link");
240 if (num_links < 0 || num_links > card->num_links) {
241 dev_dbg(dev, "number of dai-link is invalid\n");
242 return -EINVAL;
243 }
244
245 parsed_dai_link = devm_kcalloc(dev, num_links, sizeof(*parsed_dai_link), GFP_KERNEL);
246 if (!parsed_dai_link)
247 return -ENOMEM;
248
249 for (i = 0; i < num_links; i++) {
250 ret = of_property_read_string_index(np, propname, i, &dai_name);
251 if (ret) {
252 dev_dbg(dev, "ASoC: Property '%s' index %d could not be read: %d\n",
253 propname, i, ret);
254 return ret;
255 }
256 dev_dbg(dev, "ASoC: Property get dai_name:%s\n", dai_name);
257 for (j = 0; j < pre_num_links; j++) {
258 if (!strcmp(dai_name, pre_dai_links[j].name)) {
259 memcpy(&parsed_dai_link[parsed_num_links++], &pre_dai_links[j],
260 sizeof(struct snd_soc_dai_link));
261 break;
262 }
263 }
264 }
265
266 if (parsed_num_links != num_links)
267 return -EINVAL;
268
269 card->dai_link = parsed_dai_link;
270 card->num_links = parsed_num_links;
271
272 return 0;
273 }
274 EXPORT_SYMBOL_GPL(mtk_sof_dailink_parse_of);
275