// SPDX-License-Identifier: GPL-2.0 // // ASoC simple sound card support // // Copyright (C) 2012 Renesas Solutions Corp. // Kuninori Morimoto #include #include #include #include #include #include #include #include #include struct simple_card_data { struct snd_soc_card snd_card; struct simple_dai_props { struct asoc_simple_dai *cpu_dai; struct asoc_simple_dai *codec_dai; struct snd_soc_dai_link_component codecs; /* single codec */ struct snd_soc_dai_link_component platform; struct asoc_simple_card_data adata; struct snd_soc_codec_conf *codec_conf; unsigned int mclk_fs; } *dai_props; struct asoc_simple_jack hp_jack; struct asoc_simple_jack mic_jack; struct snd_soc_dai_link *dai_link; struct asoc_simple_dai *dais; struct snd_soc_codec_conf *codec_conf; }; struct link_info { int dais; /* number of dai */ int link; /* number of link */ int conf; /* number of codec_conf */ int cpu; /* turn for CPU / Codec */ }; #define simple_priv_to_card(priv) (&(priv)->snd_card) #define simple_priv_to_props(priv, i) ((priv)->dai_props + (i)) #define simple_priv_to_dev(priv) (simple_priv_to_card(priv)->dev) #define simple_priv_to_link(priv, i) (simple_priv_to_card(priv)->dai_link + (i)) #define DAI "sound-dai" #define CELL "#sound-dai-cells" #define PREFIX "simple-audio-card," static int asoc_simple_card_startup(struct snd_pcm_substream *substream) { struct snd_soc_pcm_runtime *rtd = substream->private_data; struct simple_card_data *priv = snd_soc_card_get_drvdata(rtd->card); struct simple_dai_props *dai_props = simple_priv_to_props(priv, rtd->num); int ret; ret = asoc_simple_card_clk_enable(dai_props->cpu_dai); if (ret) return ret; ret = asoc_simple_card_clk_enable(dai_props->codec_dai); if (ret) asoc_simple_card_clk_disable(dai_props->cpu_dai); return ret; } static void asoc_simple_card_shutdown(struct snd_pcm_substream *substream) { struct snd_soc_pcm_runtime *rtd = substream->private_data; struct simple_card_data *priv = snd_soc_card_get_drvdata(rtd->card); struct simple_dai_props *dai_props = simple_priv_to_props(priv, rtd->num); asoc_simple_card_clk_disable(dai_props->cpu_dai); asoc_simple_card_clk_disable(dai_props->codec_dai); } static int asoc_simple_set_clk_rate(struct asoc_simple_dai *simple_dai, unsigned long rate) { if (!simple_dai) return 0; if (!simple_dai->clk) return 0; if (clk_get_rate(simple_dai->clk) == rate) return 0; return clk_set_rate(simple_dai->clk, rate); } static int asoc_simple_card_hw_params(struct snd_pcm_substream *substream, struct snd_pcm_hw_params *params) { struct snd_soc_pcm_runtime *rtd = substream->private_data; struct snd_soc_dai *codec_dai = rtd->codec_dai; struct snd_soc_dai *cpu_dai = rtd->cpu_dai; struct simple_card_data *priv = snd_soc_card_get_drvdata(rtd->card); struct simple_dai_props *dai_props = simple_priv_to_props(priv, rtd->num); unsigned int mclk, mclk_fs = 0; int ret = 0; if (dai_props->mclk_fs) mclk_fs = dai_props->mclk_fs; if (mclk_fs) { mclk = params_rate(params) * mclk_fs; ret = asoc_simple_set_clk_rate(dai_props->codec_dai, mclk); if (ret < 0) return ret; ret = asoc_simple_set_clk_rate(dai_props->cpu_dai, mclk); if (ret < 0) return ret; ret = snd_soc_dai_set_sysclk(codec_dai, 0, mclk, SND_SOC_CLOCK_IN); if (ret && ret != -ENOTSUPP) goto err; ret = snd_soc_dai_set_sysclk(cpu_dai, 0, mclk, SND_SOC_CLOCK_OUT); if (ret && ret != -ENOTSUPP) goto err; } return 0; err: return ret; } static const struct snd_soc_ops asoc_simple_card_ops = { .startup = asoc_simple_card_startup, .shutdown = asoc_simple_card_shutdown, .hw_params = asoc_simple_card_hw_params, }; static int asoc_simple_card_dai_init(struct snd_soc_pcm_runtime *rtd) { struct simple_card_data *priv = snd_soc_card_get_drvdata(rtd->card); struct simple_dai_props *dai_props = simple_priv_to_props(priv, rtd->num); int ret; ret = asoc_simple_card_init_dai(rtd->codec_dai, dai_props->codec_dai); if (ret < 0) return ret; ret = asoc_simple_card_init_dai(rtd->cpu_dai, dai_props->cpu_dai); if (ret < 0) return ret; return 0; } static int asoc_simple_card_be_hw_params_fixup(struct snd_soc_pcm_runtime *rtd, struct snd_pcm_hw_params *params) { struct simple_card_data *priv = snd_soc_card_get_drvdata(rtd->card); struct simple_dai_props *dai_props = simple_priv_to_props(priv, rtd->num); asoc_simple_card_convert_fixup(&dai_props->adata, params); return 0; } static void asoc_simple_card_get_conversion(struct device *dev, struct device_node *np, struct asoc_simple_card_data *adata) { struct device_node *top = dev->of_node; struct device_node *node = of_get_parent(np); asoc_simple_card_parse_convert(dev, top, PREFIX, adata); asoc_simple_card_parse_convert(dev, node, PREFIX, adata); asoc_simple_card_parse_convert(dev, node, NULL, adata); asoc_simple_card_parse_convert(dev, np, NULL, adata); of_node_put(node); } static int asoc_simple_card_dai_link_of_dpcm(struct simple_card_data *priv, struct device_node *np, struct device_node *codec, struct link_info *li, bool is_top) { struct device *dev = simple_priv_to_dev(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 asoc_simple_dai *dai; struct snd_soc_dai_link_component *codecs = dai_link->codecs; struct device_node *top = dev->of_node; struct device_node *node = of_get_parent(np); char prop[128]; char *prefix = ""; int ret; /* * |CPU |Codec : turn * CPU |Pass |return * Codec |return|Pass * np */ if (li->cpu == (np == codec)) return 0; dev_dbg(dev, "link_of DPCM (%pOF)\n", np); li->link++; of_node_put(node); /* For single DAI link & old style of DT node */ if (is_top) prefix = PREFIX; if (li->cpu) { int is_single_links = 0; /* BE is dummy */ codecs->of_node = NULL; codecs->dai_name = "snd-soc-dummy-dai"; codecs->name = "snd-soc-dummy"; /* FE settings */ dai_link->dynamic = 1; dai_link->dpcm_merged_format = 1; dai = dai_props->cpu_dai = &priv->dais[li->dais++]; ret = asoc_simple_card_parse_cpu(np, dai_link, DAI, CELL, &is_single_links); if (ret) return ret; ret = asoc_simple_card_parse_clk_cpu(dev, np, dai_link, dai); if (ret < 0) return ret; ret = asoc_simple_card_set_dailink_name(dev, dai_link, "fe.%s", dai_link->cpu_dai_name); if (ret < 0) return ret; asoc_simple_card_canonicalize_cpu(dai_link, is_single_links); } else { struct snd_soc_codec_conf *cconf; /* FE is dummy */ dai_link->cpu_of_node = NULL; dai_link->cpu_dai_name = "snd-soc-dummy-dai"; dai_link->cpu_name = "snd-soc-dummy"; /* BE settings */ dai_link->no_pcm = 1; dai_link->be_hw_params_fixup = asoc_simple_card_be_hw_params_fixup; dai = dai_props->codec_dai = &priv->dais[li->dais++]; cconf = dai_props->codec_conf = &priv->codec_conf[li->conf++]; ret = asoc_simple_card_parse_codec(np, dai_link, DAI, CELL); if (ret < 0) return ret; ret = asoc_simple_card_parse_clk_codec(dev, np, dai_link, dai); if (ret < 0) return ret; ret = asoc_simple_card_set_dailink_name(dev, dai_link, "be.%s", codecs->dai_name); if (ret < 0) return ret; /* check "prefix" from top node */ snd_soc_of_parse_node_prefix(top, cconf, codecs->of_node, PREFIX "prefix"); snd_soc_of_parse_node_prefix(node, cconf, codecs->of_node, "prefix"); snd_soc_of_parse_node_prefix(np, cconf, codecs->of_node, "prefix"); } asoc_simple_card_get_conversion(dev, np, &dai_props->adata); ret = asoc_simple_card_of_parse_tdm(np, dai); if (ret) return ret; ret = asoc_simple_card_canonicalize_dailink(dai_link); if (ret < 0) return ret; snprintf(prop, sizeof(prop), "%smclk-fs", prefix); of_property_read_u32(top, PREFIX "mclk-fs", &dai_props->mclk_fs); of_property_read_u32(node, prop, &dai_props->mclk_fs); of_property_read_u32(np, prop, &dai_props->mclk_fs); ret = asoc_simple_card_parse_daifmt(dev, node, codec, prefix, &dai_link->dai_fmt); if (ret < 0) return ret; dai_link->dpcm_playback = 1; dai_link->dpcm_capture = 1; dai_link->ops = &asoc_simple_card_ops; dai_link->init = asoc_simple_card_dai_init; return 0; } static int asoc_simple_card_dai_link_of(struct simple_card_data *priv, struct device_node *np, struct device_node *codec, struct link_info *li, bool is_top) { struct device *dev = simple_priv_to_dev(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 asoc_simple_dai *cpu_dai; struct asoc_simple_dai *codec_dai; struct device_node *top = dev->of_node; struct device_node *cpu = NULL; struct device_node *node = NULL; struct device_node *plat = NULL; char prop[128]; char *prefix = ""; int ret, single_cpu; /* * |CPU |Codec : turn * CPU |Pass |return * Codec |return|return * np */ if (!li->cpu || np == codec) return 0; cpu = np; node = of_get_parent(np); li->link++; dev_dbg(dev, "link_of (%pOF)\n", node); /* For single DAI link & old style of DT node */ if (is_top) prefix = PREFIX; snprintf(prop, sizeof(prop), "%splat", prefix); plat = of_get_child_by_name(node, prop); cpu_dai = dai_props->cpu_dai = &priv->dais[li->dais++]; codec_dai = dai_props->codec_dai = &priv->dais[li->dais++]; ret = asoc_simple_card_parse_daifmt(dev, node, codec, prefix, &dai_link->dai_fmt); if (ret < 0) goto dai_link_of_err; snprintf(prop, sizeof(prop), "%smclk-fs", prefix); of_property_read_u32(top, PREFIX "mclk-fs", &dai_props->mclk_fs); of_property_read_u32(node, prop, &dai_props->mclk_fs); of_property_read_u32(cpu, prop, &dai_props->mclk_fs); of_property_read_u32(codec, prop, &dai_props->mclk_fs); ret = asoc_simple_card_parse_cpu(cpu, dai_link, DAI, CELL, &single_cpu); if (ret < 0) goto dai_link_of_err; ret = asoc_simple_card_parse_codec(codec, dai_link, DAI, CELL); if (ret < 0) goto dai_link_of_err; ret = asoc_simple_card_parse_platform(plat, dai_link, DAI, CELL); if (ret < 0) goto dai_link_of_err; ret = asoc_simple_card_of_parse_tdm(cpu, cpu_dai); if (ret < 0) goto dai_link_of_err; ret = asoc_simple_card_of_parse_tdm(codec, codec_dai); if (ret < 0) goto dai_link_of_err; ret = asoc_simple_card_parse_clk_cpu(dev, cpu, dai_link, cpu_dai); if (ret < 0) goto dai_link_of_err; ret = asoc_simple_card_parse_clk_codec(dev, codec, dai_link, codec_dai); if (ret < 0) goto dai_link_of_err; ret = asoc_simple_card_canonicalize_dailink(dai_link); if (ret < 0) goto dai_link_of_err; ret = asoc_simple_card_set_dailink_name(dev, dai_link, "%s-%s", dai_link->cpu_dai_name, dai_link->codecs->dai_name); if (ret < 0) goto dai_link_of_err; dai_link->ops = &asoc_simple_card_ops; dai_link->init = asoc_simple_card_dai_init; asoc_simple_card_canonicalize_cpu(dai_link, single_cpu); dai_link_of_err: of_node_put(node); return ret; } static int asoc_simple_card_for_each_link(struct simple_card_data *priv, struct link_info *li, int (*func_noml)(struct simple_card_data *priv, struct device_node *np, struct device_node *codec, struct link_info *li, bool is_top), int (*func_dpcm)(struct simple_card_data *priv, struct device_node *np, struct device_node *codec, struct link_info *li, bool is_top)) { struct device *dev = simple_priv_to_dev(priv); struct device_node *top = dev->of_node; struct device_node *node; bool is_top = 0; /* Check if it has dai-link */ node = of_get_child_by_name(top, PREFIX "dai-link"); if (!node) { node = top; is_top = 1; } /* loop for all dai-link */ do { struct asoc_simple_card_data adata; struct device_node *codec; struct device_node *np; int num = of_get_child_count(node); int ret; /* get codec */ codec = of_get_child_by_name(node, is_top ? PREFIX "codec" : "codec"); if (!codec) return -ENODEV; of_node_put(codec); /* get convert-xxx property */ memset(&adata, 0, sizeof(adata)); for_each_child_of_node(node, np) asoc_simple_card_get_conversion(dev, np, &adata); /* loop for all CPU/Codec node */ for_each_child_of_node(node, np) { /* * It is DPCM * if it has many CPUs, * or has convert-xxx property */ if (num > 2 || adata.convert_rate || adata.convert_channels) ret = func_dpcm(priv, np, codec, li, is_top); /* else normal sound */ else ret = func_noml(priv, np, codec, li, is_top); if (ret < 0) return ret; } node = of_get_next_child(top, node); } while (!is_top && node); return 0; } static int asoc_simple_card_parse_aux_devs(struct device_node *node, struct simple_card_data *priv) { struct device *dev = simple_priv_to_dev(priv); struct device_node *aux_node; struct snd_soc_card *card = simple_priv_to_card(priv); int i, n, len; if (!of_find_property(node, PREFIX "aux-devs", &len)) return 0; /* Ok to have no aux-devs */ n = len / sizeof(__be32); if (n <= 0) return -EINVAL; card->aux_dev = devm_kcalloc(dev, n, sizeof(*card->aux_dev), GFP_KERNEL); if (!card->aux_dev) return -ENOMEM; for (i = 0; i < n; i++) { aux_node = of_parse_phandle(node, PREFIX "aux-devs", i); if (!aux_node) return -EINVAL; card->aux_dev[i].codec_of_node = aux_node; } card->num_aux_devs = n; return 0; } static int asoc_simple_card_parse_of(struct simple_card_data *priv) { struct device *dev = simple_priv_to_dev(priv); struct device_node *top = dev->of_node; struct snd_soc_card *card = simple_priv_to_card(priv); struct link_info li; int ret; if (!top) return -EINVAL; ret = asoc_simple_card_of_parse_widgets(card, PREFIX); if (ret < 0) return ret; ret = asoc_simple_card_of_parse_routing(card, PREFIX); if (ret < 0) return ret; /* Single/Muti DAI link(s) & New style of DT node */ memset(&li, 0, sizeof(li)); for (li.cpu = 1; li.cpu >= 0; li.cpu--) { /* * Detect all CPU first, and Detect all Codec 2nd. * * In Normal sound case, all DAIs are detected * as "CPU-Codec". * * In DPCM sound case, * all CPUs are detected as "CPU-dummy", and * all Codecs are detected as "dummy-Codec". * To avoid random sub-device numbering, * detect "dummy-Codec" in last; */ ret = asoc_simple_card_for_each_link(priv, &li, asoc_simple_card_dai_link_of, asoc_simple_card_dai_link_of_dpcm); if (ret < 0) return ret; } ret = asoc_simple_card_parse_card_name(card, PREFIX); if (ret < 0) return ret; ret = asoc_simple_card_parse_aux_devs(top, priv); return ret; } static int asoc_simple_card_count_noml(struct simple_card_data *priv, struct device_node *np, struct device_node *codec, struct link_info *li, bool is_top) { li->dais++; /* CPU or Codec */ if (np != codec) li->link++; /* CPU-Codec */ return 0; } static int asoc_simple_card_count_dpcm(struct simple_card_data *priv, struct device_node *np, struct device_node *codec, struct link_info *li, bool is_top) { li->dais++; /* CPU or Codec */ li->link++; /* CPU-dummy or dummy-Codec */ if (np == codec) li->conf++; return 0; } static void asoc_simple_card_get_dais_count(struct simple_card_data *priv, struct link_info *li) { struct device *dev = simple_priv_to_dev(priv); struct device_node *top = dev->of_node; /* * link_num : number of links. * CPU-Codec / CPU-dummy / dummy-Codec * dais_num : number of DAIs * ccnf_num : number of codec_conf * same number for "dummy-Codec" * * ex1) * CPU0 --- Codec0 link : 5 * CPU1 --- Codec1 dais : 7 * CPU2 -/ ccnf : 1 * CPU3 --- Codec2 * * => 5 links = 2xCPU-Codec + 2xCPU-dummy + 1xdummy-Codec * => 7 DAIs = 4xCPU + 3xCodec * => 1 ccnf = 1xdummy-Codec * * ex2) * CPU0 --- Codec0 link : 5 * CPU1 --- Codec1 dais : 6 * CPU2 -/ ccnf : 1 * CPU3 -/ * * => 5 links = 1xCPU-Codec + 3xCPU-dummy + 1xdummy-Codec * => 6 DAIs = 4xCPU + 2xCodec * => 1 ccnf = 1xdummy-Codec * * ex3) * CPU0 --- Codec0 link : 6 * CPU1 -/ dais : 6 * CPU2 --- Codec1 ccnf : 2 * CPU3 -/ * * => 6 links = 0xCPU-Codec + 4xCPU-dummy + 2xdummy-Codec * => 6 DAIs = 4xCPU + 2xCodec * => 2 ccnf = 2xdummy-Codec * * ex4) * CPU0 --- Codec0 (convert-rate) link : 3 * CPU1 --- Codec1 dais : 4 * ccnf : 1 * * => 3 links = 1xCPU-Codec + 1xCPU-dummy + 1xdummy-Codec * => 4 DAIs = 2xCPU + 2xCodec * => 1 ccnf = 1xdummy-Codec */ if (!top) { li->link = 1; li->dais = 2; li->conf = 0; return; } asoc_simple_card_for_each_link(priv, li, asoc_simple_card_count_noml, asoc_simple_card_count_dpcm); dev_dbg(dev, "link %d, dais %d, ccnf %d\n", li->link, li->dais, li->conf); } static int asoc_simple_soc_card_probe(struct snd_soc_card *card) { struct simple_card_data *priv = snd_soc_card_get_drvdata(card); int ret; ret = asoc_simple_card_init_hp(card, &priv->hp_jack, PREFIX); if (ret < 0) return ret; ret = asoc_simple_card_init_mic(card, &priv->mic_jack, PREFIX); if (ret < 0) return ret; return 0; } static int asoc_simple_card_probe(struct platform_device *pdev) { struct simple_card_data *priv; struct snd_soc_dai_link *dai_link; struct simple_dai_props *dai_props; struct asoc_simple_dai *dais; struct device *dev = &pdev->dev; struct device_node *np = dev->of_node; struct snd_soc_card *card; struct snd_soc_codec_conf *cconf; struct link_info li; int ret, i; /* Allocate the private data and the DAI link array */ priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); if (!priv) return -ENOMEM; card = simple_priv_to_card(priv); card->owner = THIS_MODULE; card->dev = dev; card->probe = asoc_simple_soc_card_probe; memset(&li, 0, sizeof(li)); asoc_simple_card_get_dais_count(priv, &li); if (!li.link || !li.dais) return -EINVAL; dai_props = devm_kcalloc(dev, li.link, sizeof(*dai_props), GFP_KERNEL); dai_link = devm_kcalloc(dev, li.link, sizeof(*dai_link), GFP_KERNEL); dais = devm_kcalloc(dev, li.dais, sizeof(*dais), GFP_KERNEL); cconf = devm_kcalloc(dev, li.conf, sizeof(*cconf), GFP_KERNEL); if (!dai_props || !dai_link || !dais) return -ENOMEM; /* * Use snd_soc_dai_link_component instead of legacy style * It is codec only. but cpu/platform will be supported in the future. * see * soc-core.c :: snd_soc_init_multicodec() */ for (i = 0; i < li.link; i++) { dai_link[i].codecs = &dai_props[i].codecs; dai_link[i].num_codecs = 1; dai_link[i].platform = &dai_props[i].platform; } priv->dai_props = dai_props; priv->dai_link = dai_link; priv->dais = dais; priv->codec_conf = cconf; card->dai_link = priv->dai_link; card->num_links = li.link; card->codec_conf = cconf; card->num_configs = li.conf; if (np && of_device_is_available(np)) { ret = asoc_simple_card_parse_of(priv); if (ret < 0) { if (ret != -EPROBE_DEFER) dev_err(dev, "parse error %d\n", ret); goto err; } } else { struct asoc_simple_card_info *cinfo; struct snd_soc_dai_link_component *codecs; struct snd_soc_dai_link_component *platform; int dai_idx = 0; cinfo = dev->platform_data; if (!cinfo) { dev_err(dev, "no info for asoc-simple-card\n"); return -EINVAL; } if (!cinfo->name || !cinfo->codec_dai.name || !cinfo->codec || !cinfo->platform || !cinfo->cpu_dai.name) { dev_err(dev, "insufficient asoc_simple_card_info settings\n"); return -EINVAL; } dai_props->cpu_dai = &priv->dais[dai_idx++]; dai_props->codec_dai = &priv->dais[dai_idx++]; codecs = dai_link->codecs; codecs->name = cinfo->codec; codecs->dai_name = cinfo->codec_dai.name; platform = dai_link->platform; platform->name = cinfo->platform; card->name = (cinfo->card) ? cinfo->card : cinfo->name; dai_link->name = cinfo->name; dai_link->stream_name = cinfo->name; dai_link->cpu_dai_name = cinfo->cpu_dai.name; dai_link->dai_fmt = cinfo->daifmt; dai_link->init = asoc_simple_card_dai_init; memcpy(priv->dai_props->cpu_dai, &cinfo->cpu_dai, sizeof(*priv->dai_props->cpu_dai)); memcpy(priv->dai_props->codec_dai, &cinfo->codec_dai, sizeof(*priv->dai_props->codec_dai)); } snd_soc_card_set_drvdata(card, priv); ret = devm_snd_soc_register_card(dev, card); if (ret < 0) goto err; return 0; err: asoc_simple_card_clean_reference(card); return ret; } static int asoc_simple_card_remove(struct platform_device *pdev) { struct snd_soc_card *card = platform_get_drvdata(pdev); return asoc_simple_card_clean_reference(card); } static const struct of_device_id asoc_simple_of_match[] = { { .compatible = "simple-audio-card", }, { .compatible = "simple-scu-audio-card", }, {}, }; MODULE_DEVICE_TABLE(of, asoc_simple_of_match); static struct platform_driver asoc_simple_card = { .driver = { .name = "asoc-simple-card", .pm = &snd_soc_pm_ops, .of_match_table = asoc_simple_of_match, }, .probe = asoc_simple_card_probe, .remove = asoc_simple_card_remove, }; module_platform_driver(asoc_simple_card); MODULE_ALIAS("platform:asoc-simple-card"); MODULE_LICENSE("GPL v2"); MODULE_DESCRIPTION("ASoC Simple Sound Card"); MODULE_AUTHOR("Kuninori Morimoto ");