[alsa-devel] [ALSA][hda-codec] fix-connexant-headphone-mute

[Andrei Popa]

On Sun, 2007-04-29 at 04:43 +0300, Andrei Popa wrote:
> Hi,
> 
> The sound works ok with the built-in speakers on my Fujitsu laptop(amilo
> pro v3205). But if I plug in headphones in the audio out jack there is
> no sound in the headphones. With kernel 2.6.20 it worked ok. With 2.6.21
> it doesn't.
> This BUG is reported in ALSA bugtracking system with ID 0003039.
> 
> Patch that fixes this bug:
> 
> diff --git a/sound/pci/hda/patch_conexant.c
> b/sound/pci/hda/patch_conexant.c
> index 46e93c6..5edd330 100644
> --- a/sound/pci/hda/patch_conexant.c
> +++ b/sound/pci/hda/patch_conexant.c
> @@ -636,7 +636,7 @@ static void cxt5045_hp_automute(struct hda_codec
> *codec)
> 
>         bits = (spec->hp_present || !spec->cur_eapd) ? 0x80 : 0;
>         snd_hda_codec_amp_update(codec, 0x10, 0, HDA_OUTPUT, 0, 0x80,
> bits);
> -       snd_hda_codec_amp_update(codec, 0x10, 1, HDA_OUTPUT, 0, 0x80,
> bits);
> +       snd_hda_codec_amp_update(codec, 0x10, 1, HDA_OUTPUT, 0, 0,
> bits);
>  }
> 
>  /* unsolicited event for HP jack sensing */
> @@ -988,10 +988,10 @@ static void cxt5047_hp_automute(struct hda_codec
> *codec)
> 
>         bits = (spec->hp_present || !spec->cur_eapd) ? 0x80 : 0;
>         snd_hda_codec_amp_update(codec, 0x1d, 0, HDA_OUTPUT, 0, 0x80,
> bits);
> -       snd_hda_codec_amp_update(codec, 0x1d, 1, HDA_OUTPUT, 0, 0x80,
> bits);
> +       snd_hda_codec_amp_update(codec, 0x1d, 1, HDA_OUTPUT, 0, 0,
> bits);
>         /* Mute/Unmute PCM 2 for good measure - some systems need this
> */
>         snd_hda_codec_amp_update(codec, 0x1c, 0, HDA_OUTPUT, 0, 0x80,
> bits);
> -       snd_hda_codec_amp_update(codec, 0x1c, 1, HDA_OUTPUT, 0, 0x80,
> bits);
> +       snd_hda_codec_amp_update(codec, 0x1c, 1, HDA_OUTPUT, 0, 0,
> bits);
>  }
> 
>  /* toggle input of built-in and mic jack appropriately */
> 

first patch was broken. it only worked for the right channel.
this fixes this:

diff --git a/sound/pci/hda/patch_conexant.c
b/sound/pci/hda/patch_conexant.c
index 46e93c6..0822df7 100644
--- a/sound/pci/hda/patch_conexant.c
+++ b/sound/pci/hda/patch_conexant.c
@@ -635,8 +635,8 @@ static void cxt5045_hp_automute(struct hda_codec
*codec)
                                     AC_VERB_GET_PIN_SENSE, 0) &
0x80000000;

        bits = (spec->hp_present || !spec->cur_eapd) ? 0x80 : 0;
-       snd_hda_codec_amp_update(codec, 0x10, 0, HDA_OUTPUT, 0, 0x80,
bits);
-       snd_hda_codec_amp_update(codec, 0x10, 1, HDA_OUTPUT, 0, 0x80,
bits);
+       snd_hda_codec_amp_update(codec, 0x10, 0, HDA_OUTPUT, 0, 0,
bits);
+       snd_hda_codec_amp_update(codec, 0x10, 1, HDA_OUTPUT, 0, 0,
bits);
 }

 /* unsolicited event for HP jack sensing */
@@ -987,11 +987,11 @@ static void cxt5047_hp_automute(struct hda_codec
*codec)
                                     AC_VERB_GET_PIN_SENSE, 0) &
0x80000000;

        bits = (spec->hp_present || !spec->cur_eapd) ? 0x80 : 0;
-       snd_hda_codec_amp_update(codec, 0x1d, 0, HDA_OUTPUT, 0, 0x80,
bits);
-       snd_hda_codec_amp_update(codec, 0x1d, 1, HDA_OUTPUT, 0, 0x80,
bits);
+       snd_hda_codec_amp_update(codec, 0x1d, 0, HDA_OUTPUT, 0, 0,
bits);
+       snd_hda_codec_amp_update(codec, 0x1d, 1, HDA_OUTPUT, 0, 0,
bits);
        /* Mute/Unmute PCM 2 for good measure - some systems need this
*/
-       snd_hda_codec_amp_update(codec, 0x1c, 0, HDA_OUTPUT, 0, 0x80,
bits);
-       snd_hda_codec_amp_update(codec, 0x1c, 1, HDA_OUTPUT, 0, 0x80,
bits);
+       snd_hda_codec_amp_update(codec, 0x1c, 0, HDA_OUTPUT, 0, 0,
bits);
+       snd_hda_codec_amp_update(codec, 0x1c, 1, HDA_OUTPUT, 0, 0,
bits);
 }

 /* toggle input of built-in and mic jack appropriately */