ASoC: core: Add support for DAI and machine kcontrols.

Currently ASoC can only add kcontrols using codec and platform component device
handles. It's also desirable to add kcontrols for DAIs (i.e. McBSP) and for
SoC card machine drivers too. This allows the kcontrol to have a direct handle to
the parent ASoC component DAI/SoC Card/Platform/Codec device and hence easily
get it's private data.

This change makes snd_soc_add_controls() static and wraps it in the folowing
calls (card and dai are new) :-

snd_soc_add_card_controls()
snd_soc_add_codec_controls()
snd_soc_add_dai_controls()
snd_soc_add_platform_controls()

This patch also does a lot of small mechanical changes in individual codec drivers
to replace snd_soc_add_controls() with snd_soc_add_codec_controls().

It also updates the McBSP DAI driver to use snd_soc_add_dai_controls().

Finally, it updates the existing machine drivers that register controls to either :-

1) Use snd_soc_add_card_controls() where no direct codec control is required.
2) Use snd_soc_add_codec_controls() where there is direct codec control.

In the case of 1) above we also update the machine drivers to get the correct
component data pointers from the kcontrol (rather than getting the machine pointer
via the codec pointer).

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

1 files changed, 6 insertions, 8 deletions

diff --git a/sound/soc/pxa/poodle.c b/sound/soc/pxa/poodle.c
index fd0ed10c6fe7..d2cc81735036 100644
--- a/sound/soc/pxa/poodle.c
+++ b/sound/soc/pxa/poodle.c
@@ -43,10 +43,8 @@
 static int poodle_jack_func;
 static int poodle_spk_func;
 
-static void poodle_ext_control(struct snd_soc_codec *codec)
+static void poodle_ext_control(struct snd_soc_dapm_context *dapm)
 {
-	struct snd_soc_dapm_context *dapm = &codec->dapm;
-
 	/* set up jack connection */
 	if (poodle_jack_func == POODLE_HP) {
 		/* set = unmute headphone */
@@ -81,7 +79,7 @@ static int poodle_startup(struct snd_pcm_substream *substream)
 	mutex_lock(&codec->mutex);
 
 	/* check the jack status at stream startup */
-	poodle_ext_control(codec);
+	poodle_ext_control(&codec->dapm);
 
 	mutex_unlock(&codec->mutex);
 
@@ -152,13 +150,13 @@ static int poodle_get_jack(struct snd_kcontrol *kcontrol,
 static int poodle_set_jack(struct snd_kcontrol *kcontrol,
 	struct snd_ctl_elem_value *ucontrol)
 {
-	struct snd_soc_codec *codec =  snd_kcontrol_chip(kcontrol);
+	struct snd_soc_card *card =  snd_kcontrol_chip(kcontrol);
 
 	if (poodle_jack_func == ucontrol->value.integer.value[0])
 		return 0;
 
 	poodle_jack_func = ucontrol->value.integer.value[0];
-	poodle_ext_control(codec);
+	poodle_ext_control(&card->dapm);
 	return 1;
 }
 
@@ -172,13 +170,13 @@ static int poodle_get_spk(struct snd_kcontrol *kcontrol,
 static int poodle_set_spk(struct snd_kcontrol *kcontrol,
 	struct snd_ctl_elem_value *ucontrol)
 {
-	struct snd_soc_codec *codec =  snd_kcontrol_chip(kcontrol);
+	struct snd_soc_card *card =  snd_kcontrol_chip(kcontrol);
 
 	if (poodle_spk_func == ucontrol->value.integer.value[0])
 		return 0;
 
 	poodle_spk_func = ucontrol->value.integer.value[0];
-	poodle_ext_control(codec);
+	poodle_ext_control(&card->dapm);
 	return 1;
 }