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Message-ID: <20230810081139.27957-3-trevor.wu@mediatek.com>
Date: Thu, 10 Aug 2023 16:11:38 +0800
From: Trevor Wu <trevor.wu@...iatek.com>
To: <broonie@...nel.org>, <lgirdwood@...il.com>, <tiwai@...e.com>,
<perex@...ex.cz>, <robh+dt@...nel.org>,
<krzysztof.kozlowski+dt@...aro.org>, <conor+dt@...nel.org>,
<matthias.bgg@...il.com>, <angelogioacchino.delregno@...labora.com>
CC: <trevor.wu@...iatek.com>, <alsa-devel@...a-project.org>,
<linux-mediatek@...ts.infradead.org>,
<linux-arm-kernel@...ts.infradead.org>,
<linux-kernel@...r.kernel.org>, <devicetree@...r.kernel.org>
Subject: [PATCH v3 2/3] ASoC: mediatek: common: revise SOF common code
Originally, normal dai link fixup callback is overwritten by sof fixup
callback on mtk_sof_card_late_probe and it relies on the mapping defined
on struct sof_conn_stream.
It's not flexible. When a new hardware connection is adopted, user needs
to update struct sof_conn_stream defined in machine driver which is used
to specify the mapping relationship of normal BE and SOF BE.
In the patch, mtk_sof_check_tplg_be_dai_link_fixup() is introduced for
all normal BEs. In mtk_sof_late_probe, back up normal BE fixup if it
exists and then overwrite be_hw_params_fixup by the new callback.
There are two cases for FE and BE connection.
case 1:
SOF FE -> normal BE
-> SOF_BE
case 2:
normal FE -> normal BE
In the new fixup callback, it tries to find SOF_BE which connects to the
same FE, and then reuses the fixup of SOF_BE. If no SOF_BE exists,
it must be case 2, so rollback to the original fixup if it exists.
As a result, the predefined relation is not needed anymore. Hardware
connection can be controlled by the mixer control for AFE interconn.
Then, DPCM finds the BE mapping at runtime.
Signed-off-by: Trevor Wu <trevor.wu@...iatek.com>
---
.../soc/mediatek/common/mtk-dsp-sof-common.c | 113 +++++++++++++++---
.../soc/mediatek/common/mtk-dsp-sof-common.h | 8 ++
2 files changed, 106 insertions(+), 15 deletions(-)
diff --git a/sound/soc/mediatek/common/mtk-dsp-sof-common.c b/sound/soc/mediatek/common/mtk-dsp-sof-common.c
index 6fef16306f74..f3894010f656 100644
--- a/sound/soc/mediatek/common/mtk-dsp-sof-common.c
+++ b/sound/soc/mediatek/common/mtk-dsp-sof-common.c
@@ -54,6 +54,8 @@ 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);
+ struct mtk_sof_priv *sof_priv = soc_card_data->sof_priv;
/* Set stream_name to help sof bind widgets */
for_each_card_prelinks(card, i, dai_link) {
@@ -61,10 +63,81 @@ int mtk_sof_card_probe(struct snd_soc_card *card)
dai_link->stream_name = dai_link->name;
}
+ INIT_LIST_HEAD(&sof_priv->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);
+ 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);
+ 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, &sof_priv->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;
@@ -72,6 +145,8 @@ int mtk_sof_card_late_probe(struct snd_soc_card *card)
struct mtk_soc_card_data *soc_card_data =
snd_soc_card_get_drvdata(card);
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 */
@@ -86,25 +161,37 @@ int mtk_sof_card_late_probe(struct snd_soc_card *card)
return 0;
}
- /* 2. add route path and fixup callback */
+ /* 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, &sof_priv->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;
- struct snd_soc_pcm_runtime *normal_rtd = NULL;
for_each_card_rtds(card, rtd) {
if (!strcmp(rtd->dai_link->name, conn->sof_link)) {
sof_rtd = rtd;
- continue;
- }
- if (!strcmp(rtd->dai_link->name, conn->normal_link)) {
- normal_rtd = rtd;
- continue;
- }
- if (normal_rtd && sof_rtd)
break;
+ }
}
- if (normal_rtd && sof_rtd) {
+ if (sof_rtd) {
int j;
struct snd_soc_dai *cpu_dai;
@@ -131,13 +218,9 @@ int mtk_sof_card_late_probe(struct snd_soc_card *card)
}
}
+ /* overwrite SOF BE fixup */
sof_rtd->dai_link->be_hw_params_fixup =
sof_comp->driver->be_hw_params_fixup;
- if (sof_priv->sof_dai_link_fixup)
- normal_rtd->dai_link->be_hw_params_fixup =
- sof_priv->sof_dai_link_fixup;
- else
- normal_rtd->dai_link->be_hw_params_fixup = mtk_sof_dai_link_fixup;
}
}
diff --git a/sound/soc/mediatek/common/mtk-dsp-sof-common.h b/sound/soc/mediatek/common/mtk-dsp-sof-common.h
index dd38c4a93574..4bc5e1c0c8ed 100644
--- a/sound/soc/mediatek/common/mtk-dsp-sof-common.h
+++ b/sound/soc/mediatek/common/mtk-dsp-sof-common.h
@@ -18,11 +18,19 @@ struct sof_conn_stream {
int stream_dir;
};
+struct mtk_dai_link {
+ const char *name;
+ int (*be_hw_params_fixup)(struct snd_soc_pcm_runtime *rtd,
+ struct snd_pcm_hw_params *params);
+ struct list_head list;
+};
+
struct mtk_sof_priv {
const struct sof_conn_stream *conn_streams;
int num_streams;
int (*sof_dai_link_fixup)(struct snd_soc_pcm_runtime *rtd,
struct snd_pcm_hw_params *params);
+ struct list_head dai_link_list;
};
int mtk_sof_dai_link_fixup(struct snd_soc_pcm_runtime *rtd,
--
2.18.0
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