ALSA: hda - Implement a poll loop for jacks as a module parameter

Now that we have a generic unsol mechanism, we can implement a generic
poll loop, which can be used for debugging, or if a codec's unsol
mechanism is broken.

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

1 files changed, 22 insertions, 0 deletions

diff --git a/sound/pci/hda/hda_jack.c b/sound/pci/hda/hda_jack.c
index 5c690cb873d4..07d5288ce8cf 100644
--- a/sound/pci/hda/hda_jack.c
+++ b/sound/pci/hda/hda_jack.c
@@ -439,3 +439,25 @@ void snd_hda_jack_unsol_event(struct hda_codec *codec, unsigned int res)
 }
 EXPORT_SYMBOL_HDA(snd_hda_jack_unsol_event);
 
+void snd_hda_jack_poll_all(struct hda_codec *codec)
+{
+        struct hda_jack_tbl *jack = codec->jacktbl.list;
+        int i, changes = 0;
+
+        for (i = 0; i < codec->jacktbl.used; i++, jack++) {
+                unsigned int old_sense;
+                if (!jack->nid || !jack->jack_dirty || jack->phantom_jack)
+                        continue;
+                old_sense = get_jack_plug_state(jack->pin_sense);
+                jack_detect_update(codec, jack);
+                if (old_sense == get_jack_plug_state(jack->pin_sense))
+                        continue;
+                changes = 1;
+                if (jack->callback)
+                        jack->callback(codec, jack);
+        }
+        if (changes)
+                snd_hda_jack_report_sync(codec);
+}
+EXPORT_SYMBOL_HDA(snd_hda_jack_poll_all);
+