// SPDX-License-Identifier: GPL-2.0
/*
* mtk-dsp-sof-common.c -- MediaTek dsp sof common ctrl
*
* Copyright (c) 2022 MediaTek Inc.
* Author: Chunxu Li <[email protected]>
*/
#include "mtk-dsp-sof-common.h"
#include "mtk-soc-card.h"
/* fixup the BE DAI link to match any values from topology */
int mtk_sof_dai_link_fixup(struct snd_soc_pcm_runtime *rtd,
struct snd_pcm_hw_params *params)
{
struct snd_soc_card *card = rtd->card;
struct mtk_soc_card_data *soc_card_data = snd_soc_card_get_drvdata(card);
const struct mtk_sof_priv *sof_priv = soc_card_data->sof_priv;
int i, j, ret = 0;
for (i = 0; i < sof_priv->num_streams; i++) {
struct snd_soc_dai *cpu_dai;
struct snd_soc_pcm_runtime *runtime;
struct snd_soc_dai_link *sof_dai_link = NULL;
const struct sof_conn_stream *conn = &sof_priv->conn_streams[i];
if (conn->normal_link && strcmp(rtd->dai_link->name, conn->normal_link))
continue;
for_each_card_rtds(card, runtime) {
if (strcmp(runtime->dai_link->name, conn->sof_link))
continue;
for_each_rtd_cpu_dais(runtime, j, cpu_dai) {
if (snd_soc_dai_stream_active(cpu_dai, conn->stream_dir) > 0) {
sof_dai_link = runtime->dai_link;
break;
}
}
break;
}
if (sof_dai_link && sof_dai_link->be_hw_params_fixup)
ret = sof_dai_link->be_hw_params_fixup(runtime, params);
break;
}
return ret;
}
EXPORT_SYMBOL_GPL(mtk_sof_dai_link_fixup);
int mtk_sof_card_probe(struct snd_soc_card *card)
{
int i;
struct snd_soc_dai_link *dai_link;
struct mtk_soc_card_data *soc_card_data = snd_soc_card_get_drvdata(card);
/* Set stream_name to help sof bind widgets */
for_each_card_prelinks(card, i, dai_link) {
if (dai_link->no_pcm && !dai_link->stream_name && dai_link->name)
dai_link->stream_name = dai_link->name;
}
INIT_LIST_HEAD(&soc_card_data->sof_dai_link_list);
return 0;
}
EXPORT_SYMBOL_GPL(mtk_sof_card_probe);
static struct snd_soc_pcm_runtime *mtk_sof_find_tplg_be(struct snd_soc_pcm_runtime *rtd)
{
struct snd_soc_card *card = rtd->card;
struct mtk_soc_card_data *soc_card_data = snd_soc_card_get_drvdata(card);
const struct mtk_sof_priv *sof_priv = soc_card_data->sof_priv;
struct snd_soc_pcm_runtime *fe;
struct snd_soc_pcm_runtime *be;
struct snd_soc_dpcm *dpcm;
int i, stream;
for_each_pcm_streams(stream) {
fe = NULL;
for_each_dpcm_fe(rtd, stream, dpcm) {
fe = dpcm->fe;
if (fe)
break;
}
if (!fe)
continue;
for_each_dpcm_be(fe, stream, dpcm) {
be = dpcm->be;
if (be == rtd)
continue;
for (i = 0; i < sof_priv->num_streams; i++) {
const struct sof_conn_stream *conn = &sof_priv->conn_streams[i];
if (!strcmp(be->dai_link->name, conn->sof_link))
return be;
}
}
}
return NULL;
}
/* fixup the BE DAI link to match any values from topology */
static int mtk_sof_check_tplg_be_dai_link_fixup(struct snd_soc_pcm_runtime *rtd,
struct snd_pcm_hw_params *params)
{
struct snd_soc_card *card = rtd->card;
struct mtk_soc_card_data *soc_card_data = snd_soc_card_get_drvdata(card);
const struct mtk_sof_priv *sof_priv = soc_card_data->sof_priv;
struct snd_soc_pcm_runtime *sof_be;
struct mtk_dai_link *dai_link;
int ret = 0;
sof_be = mtk_sof_find_tplg_be(rtd);
if (sof_be) {
if (sof_priv->sof_dai_link_fixup)
ret = sof_priv->sof_dai_link_fixup(rtd, params);
else if (sof_be->dai_link->be_hw_params_fixup)
ret = sof_be->dai_link->be_hw_params_fixup(sof_be, params);
} else {
list_for_each_entry(dai_link, &soc_card_data->sof_dai_link_list, list) {
if (strcmp(dai_link->name, rtd->dai_link->name) == 0) {
if (dai_link->be_hw_params_fixup)
ret = dai_link->be_hw_params_fixup(rtd, params);
break;
}
}
}
return ret;
}
int mtk_sof_card_late_probe(struct snd_soc_card *card)
{
struct snd_soc_pcm_runtime *rtd;
struct snd_soc_component *sof_comp = NULL;
struct mtk_soc_card_data *soc_card_data =
snd_soc_card_get_drvdata(card);
const struct mtk_sof_priv *sof_priv = soc_card_data->sof_priv;
struct snd_soc_dai_link *dai_link;
struct mtk_dai_link *mtk_dai_link;
int i;
/* 1. find sof component */
for_each_card_rtds(card, rtd) {
sof_comp = snd_soc_rtdcom_lookup(rtd, "sof-audio-component");
if (sof_comp)
break;
}
if (!sof_comp) {
dev_info(card->dev, "probe without sof-audio-component\n");
return 0;
}
/* 2. overwrite all BE fixups, and backup the existing fixup */
for_each_card_prelinks(card, i, dai_link) {
if (dai_link->be_hw_params_fixup) {
mtk_dai_link = devm_kzalloc(card->dev,
sizeof(*mtk_dai_link),
GFP_KERNEL);
if (!mtk_dai_link)
return -ENOMEM;
mtk_dai_link->be_hw_params_fixup = dai_link->be_hw_params_fixup;
mtk_dai_link->name = dai_link->name;
list_add(&mtk_dai_link->list, &soc_card_data->sof_dai_link_list);
}
if (dai_link->no_pcm)
dai_link->be_hw_params_fixup = mtk_sof_check_tplg_be_dai_link_fixup;
}
/* 3. add route path and SOF_BE fixup callback */
for (i = 0; i < sof_priv->num_streams; i++) {
const struct sof_conn_stream *conn = &sof_priv->conn_streams[i];
struct snd_soc_pcm_runtime *sof_rtd = NULL;
for_each_card_rtds(card, rtd) {
if (!strcmp(rtd->dai_link->name, conn->sof_link)) {
sof_rtd = rtd;
break;
}
}
if (sof_rtd) {
int j;
struct snd_soc_dai *cpu_dai;
for_each_rtd_cpu_dais(sof_rtd, j, cpu_dai) {
struct snd_soc_dapm_route route;
struct snd_soc_dapm_path *p = NULL;
struct snd_soc_dapm_widget *widget = snd_soc_dai_get_widget(cpu_dai, conn->stream_dir);
memset(&route, 0, sizeof(route));
if (conn->stream_dir == SNDRV_PCM_STREAM_CAPTURE && widget) {
snd_soc_dapm_widget_for_each_sink_path(widget, p) {
route.source = conn->sof_dma;
route.sink = p->sink->name;
snd_soc_dapm_add_routes(&card->dapm, &route, 1);
}
} else if (conn->stream_dir == SNDRV_PCM_STREAM_PLAYBACK && widget) {
snd_soc_dapm_widget_for_each_source_path(widget, p) {
route.source = p->source->name;
route.sink = conn->sof_dma;
snd_soc_dapm_add_routes(&card->dapm, &route, 1);
}
} else {
dev_err(cpu_dai->dev, "stream dir and widget not pair\n");
}
}
/* overwrite SOF BE fixup */
sof_rtd->dai_link->be_hw_params_fixup =
sof_comp->driver->be_hw_params_fixup;
}
}
return 0;
}
EXPORT_SYMBOL_GPL(mtk_sof_card_late_probe);
int 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)
{
struct device *dev = card->dev;
struct snd_soc_dai_link *parsed_dai_link;
const char *dai_name = NULL;
int i, j, ret, num_links, parsed_num_links = 0;
num_links = of_property_count_strings(np, "mediatek,dai-link");
if (num_links < 0 || num_links > card->num_links) {
dev_dbg(dev, "number of dai-link is invalid\n");
return -EINVAL;
}
parsed_dai_link = devm_kcalloc(dev, num_links, sizeof(*parsed_dai_link), GFP_KERNEL);
if (!parsed_dai_link)
return -ENOMEM;
for (i = 0; i < num_links; i++) {
ret = of_property_read_string_index(np, propname, i, &dai_name);
if (ret) {
dev_dbg(dev, "ASoC: Property '%s' index %d could not be read: %d\n",
propname, i, ret);
return ret;
}
dev_dbg(dev, "ASoC: Property get dai_name:%s\n", dai_name);
for (j = 0; j < pre_num_links; j++) {
if (!strcmp(dai_name, pre_dai_links[j].name)) {
memcpy(&parsed_dai_link[parsed_num_links++], &pre_dai_links[j],
sizeof(struct snd_soc_dai_link));
break;
}
}
}
if (parsed_num_links != num_links)
return -EINVAL;
card->dai_link = parsed_dai_link;
card->num_links = parsed_num_links;
return 0;
}
EXPORT_SYMBOL_GPL(mtk_sof_dailink_parse_of);
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