ALSA: hda - Disable tigger at pin-sensing on AD codecs

Analog Device codecs seem to have problems with the triggering of
pin-sensing although their pincaps give the trigger requirements.
Some reported that constant CPU load on HP laptops with AD codecs.

For avoiding this regression, add a flag to codec struct to notify
explicitly that the codec doesn't suppot the trigger at pin-sensing.

Tested-by: Maciej Rutecki <maciej.rutecki@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

diff --git a/sound/pci/hda/hda_codec.c b/sound/pci/hda/hda_codec.c
index 950ee5c..f98b47c 100644 (file)
--- a/sound/pci/hda/hda_codec.c
+++ b/sound/pci/hda/hda_codec.c
@@ -1327,11 +1327,13 @@ EXPORT_SYMBOL_HDA(snd_hda_query_pin_caps);
  */
 u32 snd_hda_pin_sense(struct hda_codec *codec, hda_nid_t nid)
 {
-       u32 pincap = snd_hda_query_pin_caps(codec, nid);
-
-       if (pincap & AC_PINCAP_TRIG_REQ) /* need trigger? */
-               snd_hda_codec_read(codec, nid, 0, AC_VERB_SET_PIN_SENSE, 0);
+       u32 pincap;
 
+       if (!codec->no_trigger_sense) {
+               pincap = snd_hda_query_pin_caps(codec, nid);
+               if (pincap & AC_PINCAP_TRIG_REQ) /* need trigger? */
+                       snd_hda_codec_read(codec, nid, 0, AC_VERB_SET_PIN_SENSE, 0);
+       }
        return snd_hda_codec_read(codec, nid, 0,
                                  AC_VERB_GET_PIN_SENSE, 0);
 }

diff --git a/sound/pci/hda/hda_codec.h b/sound/pci/hda/hda_codec.h
index 1d541b7..0a770a2 100644 (file)
--- a/sound/pci/hda/hda_codec.h
+++ b/sound/pci/hda/hda_codec.h
@@ -817,6 +817,7 @@ struct hda_codec {
        unsigned int pin_amp_workaround:1; /* pin out-amp takes index
                                            * (e.g. Conexant codecs)
                                            */
+       unsigned int no_trigger_sense:1; /* don't trigger at pin-sensing */
 #ifdef CONFIG_SND_HDA_POWER_SAVE
        unsigned int power_on :1;       /* current (global) power-state */
        unsigned int power_transition :1; /* power-state in transition */

diff --git a/sound/pci/hda/patch_analog.c b/sound/pci/hda/patch_analog.c
index 1a36137..69a941c 100644 (file)
--- a/sound/pci/hda/patch_analog.c
+++ b/sound/pci/hda/patch_analog.c
@@ -1186,6 +1186,8 @@ static int patch_ad1986a(struct hda_codec *codec)
         */
        spec->multiout.no_share_stream = 1;
 
+       codec->no_trigger_sense = 1;
+
        return 0;
 }
 
@@ -1371,6 +1373,8 @@ static int patch_ad1983(struct hda_codec *codec)
 
        codec->patch_ops = ad198x_patch_ops;
 
+       codec->no_trigger_sense = 1;
+
        return 0;
 }
 
@@ -1813,6 +1817,9 @@ static int patch_ad1981(struct hda_codec *codec)
                codec->patch_ops.unsol_event = ad1981_hp_unsol_event;
                break;
        }
+
+       codec->no_trigger_sense = 1;
+
        return 0;
 }
 
@@ -3118,6 +3125,8 @@ static int patch_ad1988(struct hda_codec *codec)
 #endif
        spec->vmaster_nid = 0x04;
 
+       codec->no_trigger_sense = 1;
+
        return 0;
 }
 
@@ -3330,6 +3339,8 @@ static int patch_ad1884(struct hda_codec *codec)
 
        codec->patch_ops = ad198x_patch_ops;
 
+       codec->no_trigger_sense = 1;
+
        return 0;
 }
 
@@ -4287,6 +4298,8 @@ static int patch_ad1884a(struct hda_codec *codec)
                break;
        }
 
+       codec->no_trigger_sense = 1;
+
        return 0;
 }
 
@@ -4623,6 +4636,9 @@ static int patch_ad1882(struct hda_codec *codec)
                spec->mixers[2] = ad1882_6stack_mixers;
                break;
        }
+
+       codec->no_trigger_sense = 1;
+
        return 0;
 }