ALSA: hda - Allow multiple callbacks for jack

So far, hda_jack infrastructure allows only one callback per jack, and
this makes things slightly complicated when a driver wants to assign
multiple tasks to a jack, e.g. the standard auto-mute with a power
up/down sequence.  This can be simplified if the hda_jack accepts
multiple callbacks.

This patch is such an extension: the callback-specific part (the
function and private_data) is split to another struct from
hda_jack_tbl, and multiple such objects can be assigned to a single
hda_jack_tbl entry.

The new struct hda_jack_callback is passed to each callback function
now, thus the patch became bigger than expected.  But these changes
are mostly trivial.

Signed-off-by: Takashi Iwai <tiwai@suse.de>

1 files changed, 7 insertions, 4 deletions

diff --git a/sound/pci/hda/patch_via.c b/sound/pci/hda/patch_via.c
index 2a8be5a..8d234ab 100644
--- a/sound/pci/hda/patch_via.c
+++ b/sound/pci/hda/patch_via.c
@@ -118,7 +118,7 @@ static void via_playback_pcm_hook(struct hda_pcm_stream *hinfo,
 				  struct hda_codec *codec,
 				  struct snd_pcm_substream *substream,
 				  int action);
-static void via_hp_automute(struct hda_codec *codec, struct hda_jack_tbl *tbl);
+static void via_hp_automute(struct hda_codec *codec, struct hda_jack_callback *tbl);
 
 static struct via_spec *via_new_spec(struct hda_codec *codec)
 {
@@ -575,19 +575,22 @@ static const struct snd_kcontrol_new vt1708_jack_detect_ctl[] = {
 	{} /* terminator */
 };
 
-static void via_hp_automute(struct hda_codec *codec, struct hda_jack_tbl *tbl)
+static void via_hp_automute(struct hda_codec *codec,
+			    struct hda_jack_callback *tbl)
 {
 	set_widgets_power_state(codec);
 	snd_hda_gen_hp_automute(codec, tbl);
 }
 
-static void via_line_automute(struct hda_codec *codec, struct hda_jack_tbl *tbl)
+static void via_line_automute(struct hda_codec *codec,
+			      struct hda_jack_callback *tbl)
 {
 	set_widgets_power_state(codec);
 	snd_hda_gen_line_automute(codec, tbl);
 }
 
-static void via_jack_powerstate_event(struct hda_codec *codec, struct hda_jack_tbl *tbl)
+static void via_jack_powerstate_event(struct hda_codec *codec,
+				      struct hda_jack_callback *tbl)
 {
 	set_widgets_power_state(codec);
 }