diff mbox series

ALSA: hda: generic: change the DAC ctl name for LO+SPK or LO+HP

Message ID 20210504073917.22406-1-hui.wang@canonical.com
State Accepted
Commit f48652bbe3ae62ba2835a396b7e01f063e51c4cd
Headers show
Series ALSA: hda: generic: change the DAC ctl name for LO+SPK or LO+HP | expand

Commit Message

Hui Wang May 4, 2021, 7:39 a.m. UTC
Without this change, the DAC ctl's name could be changed only when
the machine has both Speaker and Headphone, but we met some machines
which only has Lineout and Headhpone, and the Lineout and Headphone
share the Audio Mixer0 and DAC0, the ctl's name is set to "Front".

On most of machines, the "Front" is used for Speaker only or Lineout
only, but on this machine it is shared by Lineout and Headphone,
This introduces an issue in the pipewire and pulseaudio, suppose users
want the Headphone to be on and the Speaker/Lineout to be off, they
could turn off the "Front", this works on most of the machines, but on
this machine, the "Front" couldn't be turned off otherwise the
headphone will be off too. Here we do some change to let the ctl's
name change to "Headphone+LO" on this machine, and pipewire and
pulseaudio already could handle "Headphone+LO" and "Speaker+LO".
(https://gitlab.freedesktop.org/pipewire/pipewire/-/issues/747)

BugLink: http://bugs.launchpad.net/bugs/804178
Signed-off-by: Hui Wang <hui.wang@canonical.com>
---
 sound/pci/hda/hda_generic.c | 16 +++++++++++-----
 1 file changed, 11 insertions(+), 5 deletions(-)

Comments

Hui Wang May 6, 2021, 7:23 a.m. UTC | #1
On 5/4/21 4:30 PM, Takashi Iwai wrote:
> On Tue, 04 May 2021 09:39:17 +0200,
> Hui Wang wrote:
>> Without this change, the DAC ctl's name could be changed only when
>> the machine has both Speaker and Headphone, but we met some machines
>> which only has Lineout and Headhpone, and the Lineout and Headphone
>> share the Audio Mixer0 and DAC0, the ctl's name is set to "Front".
>>
>> On most of machines, the "Front" is used for Speaker only or Lineout
>> only, but on this machine it is shared by Lineout and Headphone,
>> This introduces an issue in the pipewire and pulseaudio, suppose users
>> want the Headphone to be on and the Speaker/Lineout to be off, they
>> could turn off the "Front", this works on most of the machines, but on
>> this machine, the "Front" couldn't be turned off otherwise the
>> headphone will be off too. Here we do some change to let the ctl's
>> name change to "Headphone+LO" on this machine, and pipewire and
>> pulseaudio already could handle "Headphone+LO" and "Speaker+LO".
>> (https://gitlab.freedesktop.org/pipewire/pipewire/-/issues/747)
>>
>> BugLink: http://bugs.launchpad.net/bugs/804178
>> Signed-off-by: Hui Wang <hui.wang@canonical.com>
> I'm fine to take the change, but wouldn't this break anything else in
> PA?  Once when I get a positive answer, I'll apply it.

I think this change is safe to PA, both "Headphone+LO" and "Speaker+LO" 
are already in the analog-output-*.conf of PA. And I raised the 
regression concern in the 
https://gitlab.freedesktop.org/pipewire/pipewire/-/issues/747, all 
participants of the discussion on that issue don't express objection on 
this change so far.

Thanks,

Hui.

>
> thanks,
>
> Takashi
>
>> ---
>>   sound/pci/hda/hda_generic.c | 16 +++++++++++-----
>>   1 file changed, 11 insertions(+), 5 deletions(-)
>>
diff mbox series

Patch

diff --git a/sound/pci/hda/hda_generic.c b/sound/pci/hda/hda_generic.c
index 3998e1771805..b638fc2ef6f7 100644
--- a/sound/pci/hda/hda_generic.c
+++ b/sound/pci/hda/hda_generic.c
@@ -1204,11 +1204,17 @@  static const char *get_line_out_pfx(struct hda_codec *codec, int ch,
 		*index = ch;
 		return "Headphone";
 	case AUTO_PIN_LINE_OUT:
-		/* This deals with the case where we have two DACs and
-		 * one LO, one HP and one Speaker */
-		if (!ch && cfg->speaker_outs && cfg->hp_outs) {
-			bool hp_lo_shared = !path_has_mixer(codec, spec->hp_paths[0], ctl_type);
-			bool spk_lo_shared = !path_has_mixer(codec, spec->speaker_paths[0], ctl_type);
+		/* This deals with the case where one HP or one Speaker or
+		 * one HP + one Speaker need to share the DAC with LO
+		 */
+		if (!ch) {
+			bool hp_lo_shared = false, spk_lo_shared = false;
+
+			if (cfg->speaker_outs)
+				spk_lo_shared = !path_has_mixer(codec,
+								spec->speaker_paths[0],	ctl_type);
+			if (cfg->hp_outs)
+				hp_lo_shared = !path_has_mixer(codec, spec->hp_paths[0], ctl_type);
 			if (hp_lo_shared && spk_lo_shared)
 				return spec->vmaster_mute.hook ? "PCM" : "Master";
 			if (hp_lo_shared)