Merge branch 'topic/component' of git://git.kernel.org/pub/scm/linux/kernel/git/broon...
[muen/linux.git] / sound / soc / soc-core.c
index 3bb8c63564cfba66e3f0f6de4caf9db2c45347d1..b1860b14b0757ac4327e0864b66c02b7250687b4 100644 (file)
@@ -339,11 +339,12 @@ static void soc_cleanup_component_debugfs(struct snd_soc_component *component)
 static void soc_init_codec_debugfs(struct snd_soc_component *component)
 {
        struct snd_soc_codec *codec = snd_soc_component_to_codec(component);
+       struct dentry *debugfs_reg;
 
-       codec->debugfs_reg = debugfs_create_file("codec_reg", 0644,
-                                                codec->component.debugfs_root,
-                                                codec, &codec_reg_fops);
-       if (!codec->debugfs_reg)
+       debugfs_reg = debugfs_create_file("codec_reg", 0644,
+                                         codec->component.debugfs_root,
+                                         codec, &codec_reg_fops);
+       if (!debugfs_reg)
                dev_warn(codec->dev,
                        "ASoC: Failed to create codec register debugfs file\n");
 }
@@ -494,7 +495,7 @@ static void soc_cleanup_card_debugfs(struct snd_soc_card *card)
 static void snd_soc_debugfs_init(void)
 {
        snd_soc_debugfs_root = debugfs_create_dir("asoc", NULL);
-       if (IS_ERR(snd_soc_debugfs_root) || !snd_soc_debugfs_root) {
+       if (IS_ERR_OR_NULL(snd_soc_debugfs_root)) {
                pr_warn("ASoC: Failed to create debugfs directory\n");
                snd_soc_debugfs_root = NULL;
                return;
@@ -550,6 +551,54 @@ static inline void snd_soc_debugfs_exit(void)
 
 #endif
 
+static int snd_soc_rtdcom_add(struct snd_soc_pcm_runtime *rtd,
+                             struct snd_soc_component *component)
+{
+       struct snd_soc_rtdcom_list *rtdcom;
+       struct snd_soc_rtdcom_list *new_rtdcom;
+
+       for_each_rtdcom(rtd, rtdcom) {
+               /* already connected */
+               if (rtdcom->component == component)
+                       return 0;
+       }
+
+       new_rtdcom = kmalloc(sizeof(*new_rtdcom), GFP_KERNEL);
+       if (!new_rtdcom)
+               return -ENOMEM;
+
+       new_rtdcom->component = component;
+       INIT_LIST_HEAD(&new_rtdcom->list);
+
+       list_add_tail(&new_rtdcom->list, &rtd->component_list);
+
+       return 0;
+}
+
+static void snd_soc_rtdcom_del_all(struct snd_soc_pcm_runtime *rtd)
+{
+       struct snd_soc_rtdcom_list *rtdcom1, *rtdcom2;
+
+       for_each_rtdcom_safe(rtd, rtdcom1, rtdcom2)
+               kfree(rtdcom1);
+
+       INIT_LIST_HEAD(&rtd->component_list);
+}
+
+struct snd_soc_component *snd_soc_rtdcom_lookup(struct snd_soc_pcm_runtime *rtd,
+                                               const char *driver_name)
+{
+       struct snd_soc_rtdcom_list *rtdcom;
+
+       for_each_rtdcom(rtd, rtdcom) {
+               if ((rtdcom->component->driver->name == driver_name) ||
+                   strcmp(rtdcom->component->driver->name, driver_name) == 0)
+                       return rtdcom->component;
+       }
+
+       return NULL;
+}
+
 struct snd_pcm_substream *snd_soc_get_dai_substream(struct snd_soc_card *card,
                const char *dai_link, int stream)
 {
@@ -574,6 +623,7 @@ static struct snd_soc_pcm_runtime *soc_new_pcm_runtime(
        if (!rtd)
                return NULL;
 
+       INIT_LIST_HEAD(&rtd->component_list);
        rtd->card = card;
        rtd->dai_link = dai_link;
        rtd->codec_dais = kzalloc(sizeof(struct snd_soc_dai *) *
@@ -591,6 +641,7 @@ static void soc_free_pcm_runtime(struct snd_soc_pcm_runtime *rtd)
 {
        if (rtd && rtd->codec_dais)
                kfree(rtd->codec_dais);
+       snd_soc_rtdcom_del_all(rtd);
        kfree(rtd);
 }
 
@@ -1049,6 +1100,7 @@ static int soc_bind_dai_link(struct snd_soc_card *card,
        struct snd_soc_pcm_runtime *rtd;
        struct snd_soc_dai_link_component *codecs = dai_link->codecs;
        struct snd_soc_dai_link_component cpu_dai_component;
+       struct snd_soc_component *component;
        struct snd_soc_dai **codec_dais;
        struct snd_soc_platform *platform;
        struct device_node *platform_of_node;
@@ -1076,6 +1128,7 @@ static int soc_bind_dai_link(struct snd_soc_card *card,
                        dai_link->cpu_dai_name);
                goto _err_defer;
        }
+       snd_soc_rtdcom_add(rtd, rtd->cpu_dai->component);
 
        rtd->num_codecs = dai_link->num_codecs;
 
@@ -1088,6 +1141,7 @@ static int soc_bind_dai_link(struct snd_soc_card *card,
                                codecs[i].dai_name);
                        goto _err_defer;
                }
+               snd_soc_rtdcom_add(rtd, codec_dais[i]->component);
        }
 
        /* Single codec links expect codec and codec_dai in runtime data */
@@ -1099,6 +1153,23 @@ static int soc_bind_dai_link(struct snd_soc_card *card,
        if (!platform_name && !dai_link->platform_of_node)
                platform_name = "snd-soc-dummy";
 
+       /* find one from the set of registered platforms */
+       list_for_each_entry(component, &component_list, list) {
+               platform_of_node = component->dev->of_node;
+               if (!platform_of_node && component->dev->parent->of_node)
+                       platform_of_node = component->dev->parent->of_node;
+
+               if (dai_link->platform_of_node) {
+                       if (platform_of_node != dai_link->platform_of_node)
+                               continue;
+               } else {
+                       if (strcmp(component->name, platform_name))
+                               continue;
+               }
+
+               snd_soc_rtdcom_add(rtd, component);
+       }
+
        /* find one from the set of registered platforms */
        list_for_each_entry(platform, &platform_list, list) {
                platform_of_node = platform->dev->of_node;
@@ -1184,27 +1255,15 @@ static void soc_remove_link_dais(struct snd_soc_card *card,
 static void soc_remove_link_components(struct snd_soc_card *card,
        struct snd_soc_pcm_runtime *rtd, int order)
 {
-       struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
-       struct snd_soc_platform *platform = rtd->platform;
        struct snd_soc_component *component;
-       int i;
+       struct snd_soc_rtdcom_list *rtdcom;
 
-       /* remove the platform */
-       if (platform && platform->component.driver->remove_order == order)
-               soc_remove_component(&platform->component);
+       for_each_rtdcom(rtd, rtdcom) {
+               component = rtdcom->component;
 
-       /* remove the CODEC-side CODEC */
-       for (i = 0; i < rtd->num_codecs; i++) {
-               component = rtd->codec_dais[i]->component;
                if (component->driver->remove_order == order)
                        soc_remove_component(component);
        }
-
-       /* remove any CPU-side CODEC */
-       if (cpu_dai) {
-               if (cpu_dai->component->driver->remove_order == order)
-                       soc_remove_component(cpu_dai->component);
-       }
 }
 
 static void soc_remove_dai_links(struct snd_soc_card *card)
@@ -1556,21 +1615,13 @@ static int soc_probe_link_components(struct snd_soc_card *card,
                        struct snd_soc_pcm_runtime *rtd,
                                     int order)
 {
-       struct snd_soc_platform *platform = rtd->platform;
        struct snd_soc_component *component;
-       int i, ret;
+       struct snd_soc_rtdcom_list *rtdcom;
+       int ret;
 
-       /* probe the CPU-side component, if it is a CODEC */
-       component = rtd->cpu_dai->component;
-       if (component->driver->probe_order == order) {
-               ret = soc_probe_component(card, component);
-               if (ret < 0)
-                       return ret;
-       }
+       for_each_rtdcom(rtd, rtdcom) {
+               component = rtdcom->component;
 
-       /* probe the CODEC-side components */
-       for (i = 0; i < rtd->num_codecs; i++) {
-               component = rtd->codec_dais[i]->component;
                if (component->driver->probe_order == order) {
                        ret = soc_probe_component(card, component);
                        if (ret < 0)
@@ -1578,13 +1629,6 @@ static int soc_probe_link_components(struct snd_soc_card *card,
                }
        }
 
-       /* probe the platform */
-       if (platform->component.driver->probe_order == order) {
-               ret = soc_probe_component(card, &platform->component);
-               if (ret < 0)
-                       return ret;
-       }
-
        return 0;
 }