From b7950641374ddb41e9a03ff61b43f9ab3fcf763d Mon Sep 17 00:00:00 2001
From: Liam Girdwood <lrg@ti.com>
Date: Mon, 4 Jul 2011 22:10:52 +0100
Subject: [PATCH] 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>
---
include/sound/soc-dapm.h | 2 ++
include/sound/soc.h | 2 ++
sound/soc/soc-core.c | 4 ++++
sound/soc/soc-dapm.c | 13 +++++++++++--
4 files changed, 19 insertions(+), 2 deletions(-)
diff --git a/include/sound/soc-dapm.h b/include/sound/soc-dapm.h
index 602024d4c459..e09505c5a490 100644
--- 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 c421501532db..6ce8dc32a3db 100644
--- 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 16651814ecba..38f954af7bb5 100644
--- 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 ceb2ba44fd3f..54fa2e5e3078 100644
--- 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);
--
2.34.1