diff options
Diffstat (limited to 'sound/soc/generic/simple-card-utils.c')
| -rw-r--r-- | sound/soc/generic/simple-card-utils.c | 118 |
1 files changed, 105 insertions, 13 deletions
diff --git a/sound/soc/generic/simple-card-utils.c b/sound/soc/generic/simple-card-utils.c index e5ff61c1e9d1..3019626b0592 100644 --- a/sound/soc/generic/simple-card-utils.c +++ b/sound/soc/generic/simple-card-utils.c @@ -889,11 +889,6 @@ int asoc_simple_init_priv(struct asoc_simple_priv *priv, dev_dbg(dev, "link %d, dais %d, ccnf %d\n", li->link, dai_num, cnf_num); - /* dummy CPU/Codec */ - priv->dummy.of_node = NULL; - priv->dummy.dai_name = "snd-soc-dummy-dai"; - priv->dummy.name = "snd-soc-dummy"; - priv->dai_props = dai_props; priv->dai_link = dai_link; priv->dais = dais; @@ -908,7 +903,6 @@ int asoc_simple_init_priv(struct asoc_simple_priv *priv, for (i = 0; i < li->link; i++) { if (li->num[i].cpus) { /* Normal CPU */ - dai_props[i].cpus = dai_link[i].cpus = dlcs; dai_props[i].num.cpus = dai_link[i].num_cpus = li->num[i].cpus; @@ -918,15 +912,13 @@ int asoc_simple_init_priv(struct asoc_simple_priv *priv, dais += li->num[i].cpus; } else { /* DPCM Be's CPU = dummy */ - dai_props[i].cpus = - dai_link[i].cpus = &priv->dummy; + dai_link[i].cpus = &asoc_dummy_dlc; dai_props[i].num.cpus = dai_link[i].num_cpus = 1; } if (li->num[i].codecs) { /* Normal Codec */ - dai_props[i].codecs = dai_link[i].codecs = dlcs; dai_props[i].num.codecs = dai_link[i].num_codecs = li->num[i].codecs; @@ -942,15 +934,13 @@ int asoc_simple_init_priv(struct asoc_simple_priv *priv, } } else { /* DPCM Fe's Codec = dummy */ - dai_props[i].codecs = - dai_link[i].codecs = &priv->dummy; + dai_link[i].codecs = &asoc_dummy_dlc; dai_props[i].num.codecs = dai_link[i].num_codecs = 1; } if (li->num[i].platforms) { /* Have Platform */ - dai_props[i].platforms = dai_link[i].platforms = dlcs; dai_props[i].num.platforms = dai_link[i].num_platforms = li->num[i].platforms; @@ -958,7 +948,6 @@ int asoc_simple_init_priv(struct asoc_simple_priv *priv, dlcs += li->num[i].platforms; } else { /* Doesn't have Platform */ - dai_props[i].platforms = dai_link[i].platforms = NULL; dai_props[i].num.platforms = dai_link[i].num_platforms = 0; @@ -1024,6 +1013,109 @@ int asoc_graph_is_ports0(struct device_node *np) } EXPORT_SYMBOL_GPL(asoc_graph_is_ports0); +static int graph_get_dai_id(struct device_node *ep) +{ + struct device_node *node; + struct device_node *endpoint; + struct of_endpoint info; + int i, id; + int ret; + + /* use driver specified DAI ID if exist */ + ret = snd_soc_get_dai_id(ep); + if (ret != -ENOTSUPP) + return ret; + + /* use endpoint/port reg if exist */ + ret = of_graph_parse_endpoint(ep, &info); + if (ret == 0) { + /* + * Because it will count port/endpoint if it doesn't have "reg". + * But, we can't judge whether it has "no reg", or "reg = <0>" + * only of_graph_parse_endpoint(). + * We need to check "reg" property + */ + if (of_property_present(ep, "reg")) + return info.id; + + node = of_get_parent(ep); + ret = of_property_present(node, "reg"); + of_node_put(node); + if (ret) + return info.port; + } + node = of_graph_get_port_parent(ep); + + /* + * Non HDMI sound case, counting port/endpoint on its DT + * is enough. Let's count it. + */ + i = 0; + id = -1; + for_each_endpoint_of_node(node, endpoint) { + if (endpoint == ep) + id = i; + i++; + } + + of_node_put(node); + + if (id < 0) + return -ENODEV; + + return id; +} + +int asoc_graph_parse_dai(struct device_node *ep, + struct snd_soc_dai_link_component *dlc, + int *is_single_link) +{ + struct device_node *node; + struct of_phandle_args args = {}; + int ret; + + if (!ep) + return 0; + + node = of_graph_get_port_parent(ep); + + /* Get dai->name */ + args.np = node; + args.args[0] = graph_get_dai_id(ep); + args.args_count = (of_graph_get_endpoint_count(node) > 1); + + /* + * FIXME + * + * Here, dlc->dai_name is pointer to CPU/Codec DAI name. + * If user unbinded CPU or Codec driver, but not for Sound Card, + * dlc->dai_name is keeping unbinded CPU or Codec + * driver's pointer. + * + * If user re-bind CPU or Codec driver again, ALSA SoC will try + * to rebind Card via snd_soc_try_rebind_card(), but because of + * above reason, it might can't bind Sound Card. + * Because Sound Card is pointing to released dai_name pointer. + * + * To avoid this rebind Card issue, + * 1) It needs to alloc memory to keep dai_name eventhough + * CPU or Codec driver was unbinded, or + * 2) user need to rebind Sound Card everytime + * if he unbinded CPU or Codec. + */ + ret = snd_soc_get_dlc(&args, dlc); + if (ret < 0) { + of_node_put(node); + return ret; + } + + if (is_single_link) + *is_single_link = of_graph_get_endpoint_count(node) == 1; + + return 0; +} +EXPORT_SYMBOL_GPL(asoc_graph_parse_dai); + /* Module information */ MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>"); MODULE_DESCRIPTION("ALSA SoC Simple Card Utils"); |