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 */
 13int 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}
 51EXPORT_SYMBOL_GPL(mtk_sof_dai_link_fixup);
 52
 53int 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}
 69EXPORT_SYMBOL_GPL(mtk_sof_card_probe);
 70
 71static 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 */
110static 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
140int 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}
228EXPORT_SYMBOL_GPL(mtk_sof_card_late_probe);
229
230int 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}
274EXPORT_SYMBOL_GPL(mtk_sof_dailink_parse_of);