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@mediatek.com --- .../soc/mediatek/common/mtk-dsp-sof-common.c | 106 +++++++++++++++--- .../soc/mediatek/common/mtk-dsp-sof-common.h | 8 ++ 2 files changed, 99 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..ef49c2c0e253 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 +63,74 @@ 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);
+/* 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 *fe; + struct snd_soc_pcm_runtime *be; + struct snd_soc_dai_link *sof_dai_link = NULL; + struct mtk_dai_link *dai_link; + struct snd_soc_dpcm *dpcm; + int i, stream; + int ret = 0; + + 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)) { + sof_dai_link = be->dai_link; + goto FIXUP; + } + } + } + } + +FIXUP: + if (sof_dai_link) { + if (sof_priv->sof_dai_link_fixup) + ret = sof_priv->sof_dai_link_fixup(rtd, params); + else if (sof_dai_link->be_hw_params_fixup) + ret = sof_dai_link->be_hw_params_fixup(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 +138,8 @@ 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 +154,37 @@ 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 == NULL) + 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 +211,9 @@ 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,