diff options
Diffstat (limited to 'sound/soc/soc-core.c')
-rw-r--r-- | sound/soc/soc-core.c | 273 |
1 files changed, 194 insertions, 79 deletions
diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c index 1a0bde23f5e6..cc442c52cdea 100644 --- a/sound/soc/soc-core.c +++ b/sound/soc/soc-core.c @@ -238,6 +238,81 @@ static inline void snd_soc_debugfs_exit(void) { } #endif +static int snd_soc_is_match_dai_args(struct of_phandle_args *args1, + struct of_phandle_args *args2) +{ + if (!args1 || !args2) + return 0; + + if (args1->np != args2->np) + return 0; + + for (int i = 0; i < args1->args_count; i++) + if (args1->args[i] != args2->args[i]) + return 0; + + return 1; +} + +static inline int snd_soc_dlc_component_is_empty(struct snd_soc_dai_link_component *dlc) +{ + return !(dlc->dai_args || dlc->name || dlc->of_node); +} + +static inline int snd_soc_dlc_component_is_invalid(struct snd_soc_dai_link_component *dlc) +{ + return (dlc->name && dlc->of_node); +} + +static inline int snd_soc_dlc_dai_is_empty(struct snd_soc_dai_link_component *dlc) +{ + return !(dlc->dai_args || dlc->dai_name); +} + +static int snd_soc_is_matching_dai(const struct snd_soc_dai_link_component *dlc, + struct snd_soc_dai *dai) +{ + if (!dlc) + return 0; + + if (dlc->dai_args) + return snd_soc_is_match_dai_args(dai->driver->dai_args, dlc->dai_args); + + if (!dlc->dai_name) + return 1; + + /* see snd_soc_dai_name_get() */ + + if (strcmp(dlc->dai_name, dai->name) == 0) + return 1; + + if (dai->driver->name && + strcmp(dai->driver->name, dlc->dai_name) == 0) + return 1; + + if (dai->component->name && + strcmp(dlc->dai_name, dai->component->name) == 0) + return 1; + + return 0; +} + +const char *snd_soc_dai_name_get(struct snd_soc_dai *dai) +{ + /* see snd_soc_is_matching_dai() */ + if (dai->name) + return dai->name; + + if (dai->driver->name) + return dai->driver->name; + + if (dai->component->name) + return dai->component->name; + + return NULL; +} +EXPORT_SYMBOL_GPL(snd_soc_dai_name_get); + static int snd_soc_rtd_add_component(struct snd_soc_pcm_runtime *rtd, struct snd_soc_component *component) { @@ -734,6 +809,19 @@ static struct device_node return of_node; } +struct of_phandle_args *snd_soc_copy_dai_args(struct device *dev, struct of_phandle_args *args) +{ + struct of_phandle_args *ret = devm_kzalloc(dev, sizeof(*ret), GFP_KERNEL); + + if (!ret) + return NULL; + + *ret = *args; + + return ret; +} +EXPORT_SYMBOL_GPL(snd_soc_copy_dai_args); + static int snd_soc_is_matching_component( const struct snd_soc_dai_link_component *dlc, struct snd_soc_component *component) @@ -743,6 +831,15 @@ static int snd_soc_is_matching_component( if (!dlc) return 0; + if (dlc->dai_args) { + struct snd_soc_dai *dai; + + for_each_component_dais(component, dai) + if (snd_soc_is_matching_dai(dlc, dai)) + return 1; + return 0; + } + component_of_node = soc_component_to_node(component); if (dlc->of_node && component_of_node != dlc->of_node) @@ -795,18 +892,11 @@ struct snd_soc_dai *snd_soc_find_dai( lockdep_assert_held(&client_mutex); /* Find CPU DAI from registered DAIs */ - for_each_component(component) { - if (!snd_soc_is_matching_component(dlc, component)) - continue; - for_each_component_dais(component, dai) { - if (dlc->dai_name && strcmp(dai->name, dlc->dai_name) - && (!dai->driver->name - || strcmp(dai->driver->name, dlc->dai_name))) - continue; - - return dai; - } - } + for_each_component(component) + if (snd_soc_is_matching_component(dlc, component)) + for_each_component_dais(component, dai) + if (snd_soc_is_matching_dai(dlc, dai)) + return dai; return NULL; } @@ -829,102 +919,100 @@ static int soc_dai_link_sanity_check(struct snd_soc_card *card, struct snd_soc_dai_link *link) { int i; - struct snd_soc_dai_link_component *cpu, *codec, *platform; + struct snd_soc_dai_link_component *dlc; - for_each_link_codecs(link, i, codec) { + /* Codec check */ + for_each_link_codecs(link, i, dlc) { /* * Codec must be specified by 1 of name or OF node, * not both or neither. */ - if (!!codec->name == !!codec->of_node) { - dev_err(card->dev, "ASoC: Neither/both codec name/of_node are set for %s\n", - link->name); - return -EINVAL; - } + if (snd_soc_dlc_component_is_invalid(dlc)) + goto component_invalid; + + if (snd_soc_dlc_component_is_empty(dlc)) + goto component_empty; /* Codec DAI name must be specified */ - if (!codec->dai_name) { - dev_err(card->dev, "ASoC: codec_dai_name not set for %s\n", - link->name); - return -EINVAL; - } + if (snd_soc_dlc_dai_is_empty(dlc)) + goto dai_empty; /* * Defer card registration if codec component is not added to * component list. */ - if (!soc_find_component(codec)) { - dev_dbg(card->dev, - "ASoC: codec component %s not found for link %s\n", - codec->name, link->name); - return -EPROBE_DEFER; - } + if (!soc_find_component(dlc)) + goto component_not_found; } - for_each_link_platforms(link, i, platform) { + /* Platform check */ + for_each_link_platforms(link, i, dlc) { /* * Platform may be specified by either name or OF node, but it * can be left unspecified, then no components will be inserted * in the rtdcom list */ - if (!!platform->name == !!platform->of_node) { - dev_err(card->dev, - "ASoC: Neither/both platform name/of_node are set for %s\n", - link->name); - return -EINVAL; - } + if (snd_soc_dlc_component_is_invalid(dlc)) + goto component_invalid; + + if (snd_soc_dlc_component_is_empty(dlc)) + goto component_empty; /* * Defer card registration if platform component is not added to * component list. */ - if (!soc_find_component(platform)) { - dev_dbg(card->dev, - "ASoC: platform component %s not found for link %s\n", - platform->name, link->name); - return -EPROBE_DEFER; - } + if (!soc_find_component(dlc)) + goto component_not_found; } - for_each_link_cpus(link, i, cpu) { + /* CPU check */ + for_each_link_cpus(link, i, dlc) { /* * CPU device may be specified by either name or OF node, but * can be left unspecified, and will be matched based on DAI * name alone.. */ - if (cpu->name && cpu->of_node) { - dev_err(card->dev, - "ASoC: Neither/both cpu name/of_node are set for %s\n", - link->name); - return -EINVAL; - } + if (snd_soc_dlc_component_is_invalid(dlc)) + goto component_invalid; - /* - * Defer card registration if cpu dai component is not added to - * component list. - */ - if ((cpu->of_node || cpu->name) && - !soc_find_component(cpu)) { - dev_dbg(card->dev, - "ASoC: cpu component %s not found for link %s\n", - cpu->name, link->name); - return -EPROBE_DEFER; - } - /* - * At least one of CPU DAI name or CPU device name/node must be - * specified - */ - if (!cpu->dai_name && - !(cpu->name || cpu->of_node)) { - dev_err(card->dev, - "ASoC: Neither cpu_dai_name nor cpu_name/of_node are set for %s\n", - link->name); - return -EINVAL; + if (snd_soc_dlc_component_is_empty(dlc)) { + /* + * At least one of CPU DAI name or CPU device name/node must be specified + */ + if (snd_soc_dlc_dai_is_empty(dlc)) + goto component_dai_empty; + } else { + /* + * Defer card registration if Component is not added + */ + if (!soc_find_component(dlc)) + goto component_not_found; } } return 0; + +component_invalid: + dev_err(card->dev, "ASoC: Both Component name/of_node are set for %s\n", link->name); + return -EINVAL; + +component_empty: + dev_err(card->dev, "ASoC: Neither Component name/of_node are set for %s\n", link->name); + return -EINVAL; + +component_not_found: + dev_dbg(card->dev, "ASoC: Component %s not found for link %s\n", dlc->name, link->name); + return -EPROBE_DEFER; + +dai_empty: + dev_err(card->dev, "ASoC: DAI name is not set for %s\n", link->name); + return -EINVAL; + +component_dai_empty: + dev_err(card->dev, "ASoC: Neither DAI/Component name/of_node are set for %s\n", link->name); + return -EINVAL; } /** @@ -2930,6 +3018,14 @@ int snd_soc_of_parse_tdm_slot(struct device_node *np, } EXPORT_SYMBOL_GPL(snd_soc_of_parse_tdm_slot); +void snd_soc_dlc_use_cpu_as_platform(struct snd_soc_dai_link_component *platforms, + struct snd_soc_dai_link_component *cpus) +{ + platforms->of_node = cpus->of_node; + platforms->dai_args = cpus->dai_args; +} +EXPORT_SYMBOL_GPL(snd_soc_dlc_use_cpu_as_platform); + void snd_soc_of_parse_node_prefix(struct device_node *np, struct snd_soc_codec_conf *codec_conf, struct device_node *of_node, @@ -3235,11 +3331,12 @@ EXPORT_SYMBOL_GPL(snd_soc_get_stream_cpu); int snd_soc_get_dai_id(struct device_node *ep) { struct snd_soc_component *component; - struct snd_soc_dai_link_component dlc; + struct snd_soc_dai_link_component dlc = { + .of_node = of_graph_get_port_parent(ep), + }; int ret; - dlc.of_node = of_graph_get_port_parent(ep); - dlc.name = NULL; + /* * For example HDMI case, HDMI has video/sound port, * but ALSA SoC needs sound port number only. @@ -3264,8 +3361,6 @@ int snd_soc_get_dlc(const struct of_phandle_args *args, struct snd_soc_dai_link_ struct snd_soc_component *pos; int ret = -EPROBE_DEFER; - dlc->of_node = args->np; - mutex_lock(&client_mutex); for_each_component(pos) { struct device_node *component_of_node = soc_component_to_node(pos); @@ -3304,9 +3399,7 @@ int snd_soc_get_dlc(const struct of_phandle_args *args, struct snd_soc_dai_link_ id--; } - dlc->dai_name = dai->driver->name; - if (!dlc->dai_name) - dlc->dai_name = pos->name; + dlc->dai_name = snd_soc_dai_name_get(dai); } else if (ret) { /* * if another error than ENOTSUPP is returned go on and @@ -3319,6 +3412,10 @@ int snd_soc_get_dlc(const struct of_phandle_args *args, struct snd_soc_dai_link_ break; } + + if (ret == 0) + dlc->of_node = args->np; + mutex_unlock(&client_mutex); return ret; } @@ -3370,6 +3467,24 @@ int snd_soc_of_get_dai_name(struct device_node *of_node, } EXPORT_SYMBOL_GPL(snd_soc_of_get_dai_name); +struct snd_soc_dai *snd_soc_get_dai_via_args(struct of_phandle_args *dai_args) +{ + struct snd_soc_dai *dai; + struct snd_soc_component *component; + + mutex_lock(&client_mutex); + for_each_component(component) { + for_each_component_dais(component, dai) + if (snd_soc_is_match_dai_args(dai->driver->dai_args, dai_args)) + goto found; + } + dai = NULL; +found: + mutex_unlock(&client_mutex); + return dai; +} +EXPORT_SYMBOL_GPL(snd_soc_get_dai_via_args); + static void __snd_soc_of_put_component(struct snd_soc_dai_link_component *component) { if (component->of_node) { |