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 struct mtk_soc_card_data *soc_card_data = snd_soc_card_get_drvdata(card);
58 struct mtk_sof_priv *sof_priv = soc_card_data->sof_priv;
59
60 /* Set stream_name to help sof bind widgets */
61 for_each_card_prelinks(card, i, dai_link) {
62 if (dai_link->no_pcm && !dai_link->stream_name && dai_link->name)
63 dai_link->stream_name = dai_link->name;
64 }
65
66 INIT_LIST_HEAD(&sof_priv->dai_link_list);
67
68 return 0;
69 }
70 EXPORT_SYMBOL_GPL(mtk_sof_card_probe);
71
mtk_sof_find_tplg_be(struct snd_soc_pcm_runtime * rtd)72 static struct snd_soc_pcm_runtime *mtk_sof_find_tplg_be(struct snd_soc_pcm_runtime *rtd)
73 {
74 struct snd_soc_card *card = rtd->card;
75 struct mtk_soc_card_data *soc_card_data = snd_soc_card_get_drvdata(card);
76 struct mtk_sof_priv *sof_priv = soc_card_data->sof_priv;
77 struct snd_soc_pcm_runtime *fe;
78 struct snd_soc_pcm_runtime *be;
79 struct snd_soc_dpcm *dpcm;
80 int i, stream;
81
82 for_each_pcm_streams(stream) {
83 fe = NULL;
84 for_each_dpcm_fe(rtd, stream, dpcm) {
85 fe = dpcm->fe;
86 if (fe)
87 break;
88 }
89
90 if (!fe)
91 continue;
92
93 for_each_dpcm_be(fe, stream, dpcm) {
94 be = dpcm->be;
95 if (be == rtd)
96 continue;
97
98 for (i = 0; i < sof_priv->num_streams; i++) {
99 const struct sof_conn_stream *conn = &sof_priv->conn_streams[i];
100
101 if (!strcmp(be->dai_link->name, conn->sof_link))
102 return be;
103 }
104 }
105 }
106
107 return NULL;
108 }
109
110 /* 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)111 static int mtk_sof_check_tplg_be_dai_link_fixup(struct snd_soc_pcm_runtime *rtd,
112 struct snd_pcm_hw_params *params)
113 {
114 struct snd_soc_card *card = rtd->card;
115 struct mtk_soc_card_data *soc_card_data = snd_soc_card_get_drvdata(card);
116 struct mtk_sof_priv *sof_priv = soc_card_data->sof_priv;
117 struct snd_soc_pcm_runtime *sof_be;
118 struct mtk_dai_link *dai_link;
119 int ret = 0;
120
121 sof_be = mtk_sof_find_tplg_be(rtd);
122 if (sof_be) {
123 if (sof_priv->sof_dai_link_fixup)
124 ret = sof_priv->sof_dai_link_fixup(rtd, params);
125 else if (sof_be->dai_link->be_hw_params_fixup)
126 ret = sof_be->dai_link->be_hw_params_fixup(sof_be, params);
127 } else {
128 list_for_each_entry(dai_link, &sof_priv->dai_link_list, list) {
129 if (strcmp(dai_link->name, rtd->dai_link->name) == 0) {
130 if (dai_link->be_hw_params_fixup)
131 ret = dai_link->be_hw_params_fixup(rtd, params);
132
133 break;
134 }
135 }
136 }
137
138 return ret;
139 }
140
mtk_sof_card_late_probe(struct snd_soc_card * card)141 int mtk_sof_card_late_probe(struct snd_soc_card *card)
142 {
143 struct snd_soc_pcm_runtime *rtd;
144 struct snd_soc_component *sof_comp = NULL;
145 struct mtk_soc_card_data *soc_card_data =
146 snd_soc_card_get_drvdata(card);
147 struct mtk_sof_priv *sof_priv = soc_card_data->sof_priv;
148 struct snd_soc_dai_link *dai_link;
149 struct mtk_dai_link *mtk_dai_link;
150 int i;
151
152 /* 1. find sof component */
153 for_each_card_rtds(card, rtd) {
154 sof_comp = snd_soc_rtdcom_lookup(rtd, "sof-audio-component");
155 if (sof_comp)
156 break;
157 }
158
159 if (!sof_comp) {
160 dev_info(card->dev, "probe without sof-audio-component\n");
161 return 0;
162 }
163
164 /* 2. overwrite all BE fixups, and backup the existing fixup */
165 for_each_card_prelinks(card, i, dai_link) {
166 if (dai_link->be_hw_params_fixup) {
167 mtk_dai_link = devm_kzalloc(card->dev,
168 sizeof(*mtk_dai_link),
169 GFP_KERNEL);
170 if (!mtk_dai_link)
171 return -ENOMEM;
172
173 mtk_dai_link->be_hw_params_fixup = dai_link->be_hw_params_fixup;
174 mtk_dai_link->name = dai_link->name;
175
176 list_add(&mtk_dai_link->list, &sof_priv->dai_link_list);
177 }
178
179 if (dai_link->no_pcm)
180 dai_link->be_hw_params_fixup = mtk_sof_check_tplg_be_dai_link_fixup;
181 }
182
183 /* 3. add route path and SOF_BE fixup callback */
184 for (i = 0; i < sof_priv->num_streams; i++) {
185 const struct sof_conn_stream *conn = &sof_priv->conn_streams[i];
186 struct snd_soc_pcm_runtime *sof_rtd = NULL;
187
188 for_each_card_rtds(card, rtd) {
189 if (!strcmp(rtd->dai_link->name, conn->sof_link)) {
190 sof_rtd = rtd;
191 break;
192 }
193 }
194 if (sof_rtd) {
195 int j;
196 struct snd_soc_dai *cpu_dai;
197
198 for_each_rtd_cpu_dais(sof_rtd, j, cpu_dai) {
199 struct snd_soc_dapm_route route;
200 struct snd_soc_dapm_path *p = NULL;
201 struct snd_soc_dapm_widget *widget = snd_soc_dai_get_widget(cpu_dai, conn->stream_dir);
202
203 memset(&route, 0, sizeof(route));
204 if (conn->stream_dir == SNDRV_PCM_STREAM_CAPTURE && widget) {
205 snd_soc_dapm_widget_for_each_sink_path(widget, p) {
206 route.source = conn->sof_dma;
207 route.sink = p->sink->name;
208 snd_soc_dapm_add_routes(&card->dapm, &route, 1);
209 }
210 } else if (conn->stream_dir == SNDRV_PCM_STREAM_PLAYBACK && widget) {
211 snd_soc_dapm_widget_for_each_source_path(widget, p) {
212 route.source = p->source->name;
213 route.sink = conn->sof_dma;
214 snd_soc_dapm_add_routes(&card->dapm, &route, 1);
215 }
216 } else {
217 dev_err(cpu_dai->dev, "stream dir and widget not pair\n");
218 }
219 }
220
221 /* overwrite SOF BE fixup */
222 sof_rtd->dai_link->be_hw_params_fixup =
223 sof_comp->driver->be_hw_params_fixup;
224 }
225 }
226
227 return 0;
228 }
229 EXPORT_SYMBOL_GPL(mtk_sof_card_late_probe);
230
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)231 int mtk_sof_dailink_parse_of(struct snd_soc_card *card, struct device_node *np,
232 const char *propname, struct snd_soc_dai_link *pre_dai_links,
233 int pre_num_links)
234 {
235 struct device *dev = card->dev;
236 struct snd_soc_dai_link *parsed_dai_link;
237 const char *dai_name = NULL;
238 int i, j, ret, num_links, parsed_num_links = 0;
239
240 num_links = of_property_count_strings(np, "mediatek,dai-link");
241 if (num_links < 0 || num_links > card->num_links) {
242 dev_dbg(dev, "number of dai-link is invalid\n");
243 return -EINVAL;
244 }
245
246 parsed_dai_link = devm_kcalloc(dev, num_links, sizeof(*parsed_dai_link), GFP_KERNEL);
247 if (!parsed_dai_link)
248 return -ENOMEM;
249
250 for (i = 0; i < num_links; i++) {
251 ret = of_property_read_string_index(np, propname, i, &dai_name);
252 if (ret) {
253 dev_dbg(dev, "ASoC: Property '%s' index %d could not be read: %d\n",
254 propname, i, ret);
255 return ret;
256 }
257 dev_dbg(dev, "ASoC: Property get dai_name:%s\n", dai_name);
258 for (j = 0; j < pre_num_links; j++) {
259 if (!strcmp(dai_name, pre_dai_links[j].name)) {
260 memcpy(&parsed_dai_link[parsed_num_links++], &pre_dai_links[j],
261 sizeof(struct snd_soc_dai_link));
262 break;
263 }
264 }
265 }
266
267 if (parsed_num_links != num_links)
268 return -EINVAL;
269
270 card->dai_link = parsed_dai_link;
271 card->num_links = parsed_num_links;
272
273 return 0;
274 }
275 EXPORT_SYMBOL_GPL(mtk_sof_dailink_parse_of);
276