ASoC: core - Add platform widget IO

Allow platform driver widgets to perform any IO required for DAPM.

Signed-off-by: Liam Girdwood <lrg@ti.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

diff --git a/include/sound/soc-dapm.h b/include/sound/soc-dapm.h
index 602024d..e09505c 100644 (file)
--- a/include/sound/soc-dapm.h
+++ b/include/sound/soc-dapm.h
@@ -447,6 +447,7 @@ struct snd_soc_dapm_widget {
        char *name;             /* widget name */
        char *sname;    /* stream name */
        struct snd_soc_codec *codec;
+       struct snd_soc_platform *platform;
        struct list_head list;
        struct snd_soc_dapm_context *dapm;
 
@@ -510,6 +511,7 @@ struct snd_soc_dapm_context {
 
        struct device *dev; /* from parent - for debug */
        struct snd_soc_codec *codec; /* parent codec */
+       struct snd_soc_platform *platform; /* parent platform */
        struct snd_soc_card *card; /* parent card */
 
        /* used during DAPM updates */

diff --git a/include/sound/soc.h b/include/sound/soc.h
index c421501..6ce8dc3 100644 (file)
--- a/include/sound/soc.h
+++ b/include/sound/soc.h
@@ -682,6 +682,8 @@ struct snd_soc_platform {
        struct snd_soc_card *card;
        struct list_head list;
        struct list_head card_list;
+
+       struct snd_soc_dapm_context dapm;
 };
 
 struct snd_soc_dai_link {

diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c
index 1665181..38f954a 100644 (file)
--- a/sound/soc/soc-core.c
+++ b/sound/soc/soc-core.c
@@ -993,6 +993,7 @@ static int soc_probe_platform(struct snd_soc_card *card,
        const struct snd_soc_platform_driver *driver = platform->driver;
 
        platform->card = card;
+       platform->dapm.card = card;
 
        if (!try_module_get(platform->dev->driver->owner))
                return -ENODEV;
@@ -1010,6 +1011,7 @@ static int soc_probe_platform(struct snd_soc_card *card,
        /* mark platform as probed and add to card platform list */
        platform->probed = 1;
        list_add(&platform->card_list, &card->platform_dev_list);
+       list_add(&platform->dapm.list, &card->dapm_list);
 
        return 0;
 
@@ -3122,6 +3124,8 @@ int snd_soc_register_platform(struct device *dev,
 
        platform->dev = dev;
        platform->driver = platform_drv;
+       platform->dapm.dev = dev;
+       platform->dapm.platform = platform;
 
        mutex_lock(&client_mutex);
        list_add(&platform->list, &platform_list);

diff --git a/sound/soc/soc-dapm.c b/sound/soc/soc-dapm.c
index ceb2ba4..54fa2e5 100644 (file)
--- a/sound/soc/soc-dapm.c
+++ b/sound/soc/soc-dapm.c
@@ -128,14 +128,22 @@ static int soc_widget_read(struct snd_soc_dapm_widget *w, int reg)
 {
        if (w->codec)
                return snd_soc_read(w->codec, reg);
-       return 0;
+       else if (w->platform)
+               return snd_soc_platform_read(w->platform, reg);
+
+       dev_err(w->dapm->dev, "no valid widget read method\n");
+       return -1;
 }
 
 static int soc_widget_write(struct snd_soc_dapm_widget *w, int reg, int val)
 {
        if (w->codec)
                return snd_soc_write(w->codec, reg, val);
-       return 0;
+       else if (w->platform)
+               return snd_soc_platform_write(w->platform, reg, val);
+
+       dev_err(w->dapm->dev, "no valid widget write method\n");
+       return -1;
 }
 
 static int soc_widget_update_bits(struct snd_soc_dapm_widget *w,
@@ -2495,6 +2503,7 @@ int snd_soc_dapm_new_control(struct snd_soc_dapm_context *dapm,
        dapm->n_widgets++;
        w->dapm = dapm;
        w->codec = dapm->codec;
+       w->platform = dapm->platform;
        INIT_LIST_HEAD(&w->sources);
        INIT_LIST_HEAD(&w->sinks);
        INIT_LIST_HEAD(&w->list);