[alsa-devel] [PATCH] ALSA: hda - Add extra chmap for 2.1 outputs on ASUS laptops

[David Henningsson]

On 10/30/2013 05:44 PM, Takashi Iwai wrote:
> ASUS N56VZ and N76VZ laptops have a bass speaker but its output comes
> only from the right channel.  This patch adds the extra chmap specific
> to these models.
> 
> Bugzilla: https://bugzilla.novell.com/show_bug.cgi?id=846531

Hmm, according to the bug report, the chmap (before this patch) was FL,
FR, RL, RR.

I thought this was already fixed; but if it isn't, it should probably be
fixed on a more generic level: e g, whenever there is a "Bass Speaker"
control, the chmap should also be changed.

> Signed-off-by: Takashi Iwai <tiwai at suse.de>
> ---
>  sound/pci/hda/patch_realtek.c | 30 ++++++++++++++++++++++++++++--
>  1 file changed, 28 insertions(+), 2 deletions(-)
> 
> diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c
> index 13ad49ca9357..2d7c86d81196 100644
> --- a/sound/pci/hda/patch_realtek.c
> +++ b/sound/pci/hda/patch_realtek.c
> @@ -4426,6 +4426,25 @@ static void alc272_fixup_mario(struct hda_codec *codec,
>  		       "hda_codec: failed to override amp caps for NID 0x2\n");
>  }
>  
> +static const struct snd_pcm_chmap_elem asus_pcm_2_1_chmaps[] = {
> +	{ .channels = 2,
> +	  .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR } },
> +	{ .channels = 4,
> +	  .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR,
> +		   SNDRV_CHMAP_NA, SNDRV_CHMAP_LFE } }, /* LFE only on right */
> +	{ }
> +};
> +
> +/* override the 2.1 chmap */
> +static void alc662_fixup_bass_chmap(struct hda_codec *codec,
> +				    const struct hda_fixup *fix, int action)
> +{
> +	if (action == HDA_FIXUP_ACT_BUILD) {
> +		struct alc_spec *spec = codec->spec;
> +		spec->gen.pcm_rec[0].stream[0].chmap = asus_pcm_2_1_chmaps;
> +	}
> +}
> +
>  enum {
>  	ALC662_FIXUP_ASPIRE,
>  	ALC662_FIXUP_IDEAPAD,
> @@ -4446,6 +4465,7 @@ enum {
>  	ALC662_FIXUP_INV_DMIC,
>  	ALC668_FIXUP_DELL_MIC_NO_PRESENCE,
>  	ALC668_FIXUP_HEADSET_MODE,
> +	ALC662_FIXUP_BASS_CHMAP,
>  };
>  
>  static const struct hda_fixup alc662_fixups[] = {
> @@ -4620,6 +4640,12 @@ static const struct hda_fixup alc662_fixups[] = {
>  		.type = HDA_FIXUP_FUNC,
>  		.v.func = alc_fixup_headset_mode_alc668,
>  	},
> +	[ALC662_FIXUP_BASS_CHMAP] = {
> +		.type = HDA_FIXUP_FUNC,
> +		.v.func = alc662_fixup_bass_chmap,
> +		.chained = true,
> +		.chain_id = ALC662_FIXUP_ASUS_MODE4
> +	},
>  };
>  
>  static const struct snd_pci_quirk alc662_fixup_tbl[] = {
> @@ -4633,8 +4659,8 @@ static const struct snd_pci_quirk alc662_fixup_tbl[] = {
>  	SND_PCI_QUIRK(0x1028, 0x05d8, "Dell", ALC668_FIXUP_DELL_MIC_NO_PRESENCE),
>  	SND_PCI_QUIRK(0x1028, 0x05db, "Dell", ALC668_FIXUP_DELL_MIC_NO_PRESENCE),
>  	SND_PCI_QUIRK(0x103c, 0x1632, "HP RP5800", ALC662_FIXUP_HP_RP5800),
> -	SND_PCI_QUIRK(0x1043, 0x1477, "ASUS N56VZ", ALC662_FIXUP_ASUS_MODE4),
> -	SND_PCI_QUIRK(0x1043, 0x1bf3, "ASUS N76VZ", ALC662_FIXUP_ASUS_MODE4),
> +	SND_PCI_QUIRK(0x1043, 0x1477, "ASUS N56VZ", ALC662_FIXUP_BASS_CHMAP),
> +	SND_PCI_QUIRK(0x1043, 0x1bf3, "ASUS N76VZ", ALC662_FIXUP_BASS_CHMAP),
>  	SND_PCI_QUIRK(0x1043, 0x8469, "ASUS mobo", ALC662_FIXUP_NO_JACK_DETECT),
>  	SND_PCI_QUIRK(0x105b, 0x0cd6, "Foxconn", ALC662_FIXUP_ASUS_MODE2),
>  	SND_PCI_QUIRK(0x144d, 0xc051, "Samsung R720", ALC662_FIXUP_IDEAPAD),
> 



-- 
David Henningsson, Canonical Ltd.
https://launchpad.net/~diwic