ALSA: hda - add beep_mode module parameter

The beep_mode parameter for snd-hda-intel module allows to choose among
different digital beep device registation to the input layer.

0 = do not register to the input layer
1 = register to the input layer all time
2 = use "Beep Switch" control exported to user space mixer applications

Also, introduce CONFIG_SND_HDA_INPUT_BEEP_MODE for default value.

Signed-off-by: Jaroslav Kysela <perex@perex.cz>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

1 files changed, 16 insertions, 5 deletions

diff --git a/sound/pci/hda/hda_beep.c b/sound/pci/hda/hda_beep.c
index c819152de79b..9e48798b415b 100644
--- a/sound/pci/hda/hda_beep.c
+++ b/sound/pci/hda/hda_beep.c
@@ -190,14 +190,19 @@ int snd_hda_enable_beep_device(struct hda_codec *codec, int enable)
                 return 0;
         if (beep->enabled != enable) {
                 beep->enabled = enable;
-                if (enable) {
-                        cancel_delayed_work(&beep->unregister_work);
-                        schedule_work(&beep->register_work);
-                } else {
+                if (!enable) {
                         /* turn off beep */
                         snd_hda_codec_write_cache(beep->codec, beep->nid, 0,
                                                   AC_VERB_SET_BEEP_CONTROL, 0);
-                        schedule_delayed_work(&beep->unregister_work, HZ);
+                }
+                if (beep->mode == HDA_BEEP_MODE_SWREG) {
+                        if (enable) {
+                                cancel_delayed_work(&beep->unregister_work);
+                                schedule_work(&beep->register_work);
+                        } else {
+                                schedule_delayed_work(&beep->unregister_work,
+                                                                           HZ);
+                        }
                 }
                 return 1;
         }
@@ -223,6 +228,7 @@ int snd_hda_attach_beep_device(struct hda_codec *codec, int nid)
 
         beep->nid = nid;
         beep->codec = codec;
+        beep->mode = codec->beep_mode;
         codec->beep = beep;
 
         INIT_WORK(&beep->register_work, &snd_hda_do_register);
@@ -230,6 +236,11 @@ int snd_hda_attach_beep_device(struct hda_codec *codec, int nid)
         INIT_WORK(&beep->beep_work, &snd_hda_generate_beep);
         mutex_init(&beep->mutex);
 
+        if (beep->mode == HDA_BEEP_MODE_ON) {
+                beep->enabled = 1;
+                snd_hda_do_register(&beep->register_work);
+        }
+
         return 0;
 }
 EXPORT_SYMBOL_HDA(snd_hda_attach_beep_device);