ALSA: hda - make a generic unsol event handler

Moving towards less duplication of code between codecs - this patch
takes some of the common code of unsol event handling and makes it
generic.

Signed-off-by: David Henningsson <david.henningsson@canonical.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

2 files changed, 39 insertions, 2 deletions

diff --git a/sound/pci/hda/hda_jack.c b/sound/pci/hda/hda_jack.c
index c9333c9688fb..5c690cb873d4 100644
--- a/sound/pci/hda/hda_jack.c
+++ b/sound/pci/hda/hda_jack.c
@@ -192,8 +192,9 @@ EXPORT_SYMBOL_HDA(snd_hda_jack_detect);
 /**
  * snd_hda_jack_detect_enable - enable the jack-detection
  */
-int snd_hda_jack_detect_enable(struct hda_codec *codec, hda_nid_t nid,
-                               unsigned char action)
+int snd_hda_jack_detect_enable_callback(struct hda_codec *codec, hda_nid_t nid,
+                                        unsigned char action,
+                                        hda_jack_callback cb)
 {
         struct hda_jack_tbl *jack = snd_hda_jack_tbl_new(codec, nid);
         if (!jack)
@@ -203,10 +204,19 @@ int snd_hda_jack_detect_enable(struct hda_codec *codec, hda_nid_t nid,
         jack->jack_detect = 1;
         if (action)
                 jack->action = action;
+        if (cb)
+                jack->callback = cb;
         return snd_hda_codec_write_cache(codec, nid, 0,
                                          AC_VERB_SET_UNSOLICITED_ENABLE,
                                          AC_USRSP_EN | jack->tag);
 }
+EXPORT_SYMBOL_HDA(snd_hda_jack_detect_enable_callback);
+
+int snd_hda_jack_detect_enable(struct hda_codec *codec, hda_nid_t nid,
+                               unsigned char action)
+{
+        return snd_hda_jack_detect_enable_callback(codec, nid, action, NULL);
+}
 EXPORT_SYMBOL_HDA(snd_hda_jack_detect_enable);
 
 /**
@@ -411,3 +421,21 @@ int snd_hda_jack_add_kctls(struct hda_codec *codec,
         return 0;
 }
 EXPORT_SYMBOL_HDA(snd_hda_jack_add_kctls);
+
+void snd_hda_jack_unsol_event(struct hda_codec *codec, unsigned int res)
+{
+        struct hda_jack_tbl *event;
+        int tag = (res >> AC_UNSOL_RES_TAG_SHIFT) & 0x7f;
+
+        event = snd_hda_jack_tbl_get_from_tag(codec, tag);
+        if (!event)
+                return;
+        event->jack_dirty = 1;
+
+        if (event->callback)
+                event->callback(codec, event);
+
+        snd_hda_jack_report_sync(codec);
+}
+EXPORT_SYMBOL_HDA(snd_hda_jack_unsol_event);
+
diff --git a/sound/pci/hda/hda_jack.h b/sound/pci/hda/hda_jack.h
index a9803da633c0..af8dd4724da5 100644
--- a/sound/pci/hda/hda_jack.h
+++ b/sound/pci/hda/hda_jack.h
@@ -13,12 +13,16 @@
 #define __SOUND_HDA_JACK_H
 
 struct auto_pin_cfg;
+struct hda_jack_tbl;
+
+typedef void (*hda_jack_callback) (struct hda_codec *, struct hda_jack_tbl *);
 
 struct hda_jack_tbl {
         hda_nid_t nid;
         unsigned char action;           /* event action (0 = none) */
         unsigned char tag;              /* unsol event tag */
         unsigned int private_data;      /* arbitrary data */
+        hda_jack_callback callback;
         /* jack-detection stuff */
         unsigned int pin_sense;         /* cached pin-sense value */
         unsigned int jack_detect:1;     /* capable of jack-detection? */
@@ -61,6 +65,10 @@ void snd_hda_jack_set_dirty_all(struct hda_codec *codec);
 
 int snd_hda_jack_detect_enable(struct hda_codec *codec, hda_nid_t nid,
                                unsigned char action);
+int snd_hda_jack_detect_enable_callback(struct hda_codec *codec, hda_nid_t nid,
+                                        unsigned char action,
+                                        hda_jack_callback cb);
+
 
 u32 snd_hda_pin_sense(struct hda_codec *codec, hda_nid_t nid);
 int snd_hda_jack_detect(struct hda_codec *codec, hda_nid_t nid);
@@ -74,5 +82,6 @@ int snd_hda_jack_add_kctls(struct hda_codec *codec,
 
 void snd_hda_jack_report_sync(struct hda_codec *codec);
 
+void snd_hda_jack_unsol_event(struct hda_codec *codec, unsigned int res);
 
 #endif /* __SOUND_HDA_JACK_H */