diff --git a/include/sound/graph_card.h b/include/sound/graph_card.h new file mode 100644 index 0000000000000000000000000000000000000000..bbb5a137855c1789aec69d1ceab4bc669d20036d --- /dev/null +++ b/include/sound/graph_card.h @@ -0,0 +1,16 @@ +/* SPDX-License-Identifier: GPL-2.0 + * + * ASoC audio graph card support + * + */ + +#ifndef __GRAPH_CARD_H +#define __GRAPH_CARD_H + +#include + +int graph_card_probe(struct snd_soc_card *card); + +int graph_parse_of(struct asoc_simple_priv *priv, struct device *dev); + +#endif /* __GRAPH_CARD_H */ diff --git a/include/sound/simple_card_utils.h b/include/sound/simple_card_utils.h index 86a1e956991eec36ef699fc860bff14a6a430cb8..ba4a3e1897b96fcde2a2e486f3fa10333f82503c 100644 --- a/include/sound/simple_card_utils.h +++ b/include/sound/simple_card_utils.h @@ -56,6 +56,9 @@ struct asoc_simple_priv { struct asoc_simple_dai *dais; struct snd_soc_codec_conf *codec_conf; struct gpio_desc *pa_gpio; + const struct snd_soc_ops *ops; + unsigned int dpcm_selectable:1; + unsigned int force_dpcm:1; }; #define simple_priv_to_card(priv) (&(priv)->snd_card) #define simple_priv_to_props(priv, i) ((priv)->dai_props + (i)) diff --git a/include/sound/soc.h b/include/sound/soc.h index 5ac578c9340cec20dc3a8266af02bc7381612c45..4a9958b9b53245f200bc235e012b881919d932d2 100644 --- a/include/sound/soc.h +++ b/include/sound/soc.h @@ -1084,6 +1084,7 @@ struct snd_soc_card { unsigned int fully_routed:1; unsigned int disable_route_checks:1; unsigned int probed:1; + unsigned int component_chaining:1; void *drvdata; }; diff --git a/sound/soc/generic/audio-graph-card.c b/sound/soc/generic/audio-graph-card.c index 97b4f5480a31cb94c6c39a2a7d6466744e7d017d..16a04a67882829003aa7ee6a4fc2139b157e48a0 100644 --- a/sound/soc/generic/audio-graph-card.c +++ b/sound/soc/generic/audio-graph-card.c @@ -18,7 +18,7 @@ #include #include #include -#include +#include #define DPCM_SELECTABLE 1 @@ -111,6 +111,17 @@ static int graph_get_dai_id(struct device_node *ep) return id; } +static bool soc_component_is_pcm(struct snd_soc_dai_link_component *dlc) +{ + struct snd_soc_dai *dai = snd_soc_find_dai_with_mutex(dlc); + + if (dai && (dai->component->driver->pcm_construct || + dai->driver->pcm_new)) + return true; + + return false; +} + static int asoc_simple_parse_dai(struct device_node *ep, struct snd_soc_dai_link_component *dlc, int *is_single_link) @@ -205,6 +216,7 @@ static int graph_dai_link_of_dpcm(struct asoc_simple_priv *priv, int dup_codec) { struct device *dev = simple_priv_to_dev(priv); + struct snd_soc_card *card = simple_priv_to_card(priv); struct snd_soc_dai_link *dai_link = simple_priv_to_link(priv, li->link); struct simple_dai_props *dai_props = simple_priv_to_props(priv, li->link); struct device_node *top = dev->of_node; @@ -217,6 +229,14 @@ static int graph_dai_link_of_dpcm(struct asoc_simple_priv *priv, struct snd_soc_dai_link_component *codecs = dai_link->codecs; int ret; + /* + * Codec endpoint can be NULL for pluggable audio HW. + * Platform DT can populate the Codec endpoint depending on the + * plugged HW. + */ + if (!li->cpu && !codec_ep) + return 0; + /* Do it all CPU endpoint, and 1st Codec endpoint */ if (!li->cpu && dup_codec) return 0; @@ -253,11 +273,25 @@ static int graph_dai_link_of_dpcm(struct asoc_simple_priv *priv, goto out_put_node; ret = asoc_simple_set_dailink_name(dev, dai_link, - "fe.%s", + "fe.%pOFP.%s", + cpus->of_node, cpus->dai_name); if (ret < 0) goto out_put_node; + /* + * In BE<->BE connections it is not required to create + * PCM devices at CPU end of the dai link and thus 'no_pcm' + * flag needs to be set. It is useful when there are many + * BE components and some of these have to be connected to + * form a valid audio path. + * + * For example: FE <-> BE1 <-> BE2 <-> ... <-> BEn where + * there are 'n' BE components in the path. + */ + if (card->component_chaining && !soc_component_is_pcm(cpus)) + dai_link->no_pcm = 1; + /* card->num_links includes Codec */ asoc_simple_canonicalize_cpu(dai_link, is_single_links); } else { @@ -287,7 +321,8 @@ static int graph_dai_link_of_dpcm(struct asoc_simple_priv *priv, goto out_put_node; ret = asoc_simple_set_dailink_name(dev, dai_link, - "be.%s", + "be.%pOFP.%s", + codecs->of_node, codecs->dai_name); if (ret < 0) goto out_put_node; @@ -320,6 +355,11 @@ static int graph_dai_link_of_dpcm(struct asoc_simple_priv *priv, snd_soc_dai_link_set_capabilities(dai_link); dai_link->ops = &graph_ops; + + /* Use custom snd_soc_ops callbacks if available */ + if (priv->ops) + dai_link->ops = priv->ops; + dai_link->init = asoc_simple_dai_init; out_put_node: @@ -404,6 +444,28 @@ static int graph_dai_link_of(struct asoc_simple_priv *priv, return 0; } +static inline bool parse_as_dpcm_link(struct asoc_simple_priv *priv, + struct device_node *codec_port, + struct asoc_simple_data *adata) +{ + if (priv->force_dpcm) + return true; + + if (!priv->dpcm_selectable) + return false; + + /* + * It is DPCM + * if Codec port has many endpoints, + * or has convert-xxx property + */ + if ((of_get_child_count(codec_port) > 1) || + (adata->convert_rate || adata->convert_channels)) + return true; + + return false; +} + static int graph_for_each_link(struct asoc_simple_priv *priv, struct link_info *li, int (*func_noml)(struct asoc_simple_priv *priv, @@ -424,7 +486,6 @@ static int graph_for_each_link(struct asoc_simple_priv *priv, struct device_node *codec_port; struct device_node *codec_port_old = NULL; struct asoc_simple_data adata; - uintptr_t dpcm_selectable = (uintptr_t)of_device_get_match_data(dev); int rc, ret; /* loop for all listed CPU port */ @@ -447,14 +508,8 @@ static int graph_for_each_link(struct asoc_simple_priv *priv, graph_parse_convert(dev, codec_ep, &adata); graph_parse_convert(dev, cpu_ep, &adata); - /* - * It is DPCM - * if Codec port has many endpoints, - * or has convert-xxx property - */ - if (dpcm_selectable && - ((of_get_child_count(codec_port) > 1) || - adata.convert_rate || adata.convert_channels)) + /* check if link requires DPCM parsing */ + if (parse_as_dpcm_link(priv, codec_port, &adata)) ret = func_dpcm(priv, cpu_ep, codec_ep, li, (codec_port_old == codec_port)); /* else normal sound */ @@ -474,12 +529,34 @@ static int graph_for_each_link(struct asoc_simple_priv *priv, return 0; } -static int graph_parse_of(struct asoc_simple_priv *priv) +static void graph_get_dais_count(struct asoc_simple_priv *priv, + struct link_info *li); + +int graph_parse_of(struct asoc_simple_priv *priv, struct device *dev) { struct snd_soc_card *card = simple_priv_to_card(priv); struct link_info li; int ret; + card->owner = THIS_MODULE; + card->dev = dev; + + memset(&li, 0, sizeof(li)); + graph_get_dais_count(priv, &li); + if (!li.link || !li.dais) + return -EINVAL; + + ret = asoc_simple_init_priv(priv, &li); + if (ret < 0) + return ret; + + priv->pa_gpio = devm_gpiod_get_optional(dev, "pa", GPIOD_OUT_LOW); + if (IS_ERR(priv->pa_gpio)) { + ret = PTR_ERR(priv->pa_gpio); + dev_err(dev, "failed to get amplifier gpio: %d\n", ret); + return ret; + } + ret = asoc_simple_parse_widgets(card, NULL); if (ret < 0) return ret; @@ -506,11 +583,32 @@ static int graph_parse_of(struct asoc_simple_priv *priv) graph_dai_link_of, graph_dai_link_of_dpcm); if (ret < 0) - return ret; + goto err; } - return asoc_simple_parse_card_name(card, NULL); + ret = asoc_simple_parse_card_name(card, NULL); + if (ret < 0) + goto err; + + snd_soc_card_set_drvdata(card, priv); + + asoc_simple_debug_info(priv); + + ret = devm_snd_soc_register_card(dev, card); + if (ret < 0) + goto err; + + return 0; + +err: + asoc_simple_clean_reference(card); + + if (ret != -EPROBE_DEFER) + dev_err(dev, "parse error %d\n", ret); + + return ret; } +EXPORT_SYMBOL_GPL(graph_parse_of); static int graph_count_noml(struct asoc_simple_priv *priv, struct device_node *cpu_ep, @@ -538,7 +636,7 @@ static int graph_count_dpcm(struct asoc_simple_priv *priv, li->link++; /* 1xCPU-dummy */ li->dais++; /* 1xCPU */ - if (!dup_codec) { + if (!dup_codec && codec_ep) { li->link++; /* 1xdummy-Codec */ li->conf++; /* 1xdummy-Codec */ li->dais++; /* 1xCodec */ @@ -607,7 +705,7 @@ static void graph_get_dais_count(struct asoc_simple_priv *priv, li->link, li->dais, li->conf); } -static int graph_card_probe(struct snd_soc_card *card) +int graph_card_probe(struct snd_soc_card *card) { struct asoc_simple_priv *priv = snd_soc_card_get_drvdata(card); int ret; @@ -622,14 +720,13 @@ static int graph_card_probe(struct snd_soc_card *card) return 0; } +EXPORT_SYMBOL_GPL(graph_card_probe); static int graph_probe(struct platform_device *pdev) { struct asoc_simple_priv *priv; struct device *dev = &pdev->dev; struct snd_soc_card *card; - struct link_info li; - int ret; /* Allocate the private data and the DAI link array */ priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); @@ -637,48 +734,14 @@ static int graph_probe(struct platform_device *pdev) return -ENOMEM; card = simple_priv_to_card(priv); - card->owner = THIS_MODULE; - card->dev = dev; card->dapm_widgets = graph_dapm_widgets; card->num_dapm_widgets = ARRAY_SIZE(graph_dapm_widgets); card->probe = graph_card_probe; - memset(&li, 0, sizeof(li)); - graph_get_dais_count(priv, &li); - if (!li.link || !li.dais) - return -EINVAL; - - ret = asoc_simple_init_priv(priv, &li); - if (ret < 0) - return ret; + if (of_device_get_match_data(dev)) + priv->dpcm_selectable = 1; - priv->pa_gpio = devm_gpiod_get_optional(dev, "pa", GPIOD_OUT_LOW); - if (IS_ERR(priv->pa_gpio)) { - ret = PTR_ERR(priv->pa_gpio); - dev_err(dev, "failed to get amplifier gpio: %d\n", ret); - return ret; - } - - ret = graph_parse_of(priv); - if (ret < 0) { - if (ret != -EPROBE_DEFER) - dev_err(dev, "parse error %d\n", ret); - goto err; - } - - snd_soc_card_set_drvdata(card, priv); - - asoc_simple_debug_info(priv); - - ret = devm_snd_soc_register_card(dev, card); - if (ret < 0) - goto err; - - return 0; -err: - asoc_simple_clean_reference(card); - - return ret; + return graph_parse_of(priv, dev); } static int graph_remove(struct platform_device *pdev) diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c index ea3986a46c12a8325e430d618b1f65422593235c..cb7333da58f164fb7c63542b9b6267ee7c272e95 100644 --- a/sound/soc/soc-core.c +++ b/sound/soc/soc-core.c @@ -1124,7 +1124,8 @@ static void soc_set_name_prefix(struct snd_soc_card *card, for (i = 0; i < card->num_configs; i++) { struct snd_soc_codec_conf *map = &card->codec_conf[i]; - if (snd_soc_is_matching_component(&map->dlc, component)) { + if (snd_soc_is_matching_component(&map->dlc, component) && + map->name_prefix) { component->name_prefix = map->name_prefix; return; } diff --git a/sound/soc/soc-pcm.c b/sound/soc/soc-pcm.c index 2a39f355b3a4a2a2a8e051bf0bd2670b050f96d1..aaab5cfe986b5bd7e882f0985c3c7ffb9cd7b23c 100644 --- a/sound/soc/soc-pcm.c +++ b/sound/soc/soc-pcm.c @@ -1259,7 +1259,8 @@ int dpcm_path_get(struct snd_soc_pcm_runtime *fe, /* get number of valid DAI paths and their widgets */ paths = snd_soc_dapm_dai_get_connected_widgets(cpu_dai, stream, list, - dpcm_end_walk_at_be); + fe->card->component_chaining ? + NULL : dpcm_end_walk_at_be); dev_dbg(fe->dev, "ASoC: found %d audio %s paths\n", paths, stream ? "capture" : "playback");