[alsa-devel] CX20724 headset button detect
David Woodhouse
dwmw2 at infradead.org
Wed Apr 4 18:29:23 CEST 2018
On Wed, 2018-04-04 at 17:32 +0200, Takashi Iwai wrote:
> On Wed, 04 Apr 2018 13:30:12 +0200,
> David Woodhouse wrote:
> >
> >
> > I have an HP EliteBook 850 G3 with CX20724:
> >
> > hdaudioC0D0: CX20724: BIOS auto-probing.
> > hdaudioC0D0: action: 0 gpio_led: 0
> > hdaudioC0D0: autoconfig for CX20724: line_outs=1 (0x16/0x0/0x0/0x0/0x0) type:line
> > hdaudioC0D0: speaker_outs=1 (0x17/0x0/0x0/0x0/0x0)
> > hdaudioC0D0: hp_outs=1 (0x1d/0x0/0x0/0x0/0x0)
> > hdaudioC0D0: mono: mono_out=0x0
> > hdaudioC0D0: inputs:
> > hdaudioC0D0: Mic=0x19
> > hdaudioC0D0: Internal Mic=0x1a
> > hdaudioC0D0: Line=0x18
> > hdaudioC0D0: Enable sync_write for stable communication
> > hdaudioC0D0: action: 1 gpio_led: 0
> > hdaudioC0D0: action: 2 gpio_led: 0
> > ...
> > input: HDA Intel PCH Mic as /devices/pci0000:00/0000:00:1f.3/sound/card0/input21
> >
> > The CX20724 datasheet¹ suggests that it supports headset button events
> > — at least 'Function A' when the mic pin is shorted to ground, if not
> > the other functions.
> >
> > But it isn't working. Only the jack insertion is reported through the
> > corresponding input device, not the button press. I added a printk into
> > snd_hda_jack_unsol_event(), and it isn't even being invoked at all for
> > the button presses; only insertion/removal.
> >
> > How do we make this work?
> >
> > ¹ https://www.tonymacx86.com/attachments/datasheet_cx20724-pdf.203615/
>
>
> Unfortunately, there is no standard definition for the headset button
> handling in HD-audio spec, and each vendor implements in own way
> without disclosure.
> For example, the datasheet you gave also doesn't shed any light how
> it's triggered (the headset button widget NID is empty and no more
> information).
>
> So at this moment, only Conexant people can answer to this question
> properly, sorry.
Thanks. I think that would be "Synaptics people" now... Andrew, is
there any chance you could find a better datasheet for this part
please? I see mention of a 'BIOS guide' in what we have so far.
Alternatively… David, in https://bugs.launchpad.net/ubuntu/+bug/1198030
you added code which touches registers in the vendor-specific 0x1C NID.
Do you have access to something I haven't been able to find, and does
it say anything about headset button detection?
> Maybe you can try to enable the GPIO unsolicited event and see whether
> any unsolicited event is generated. Though, the datasheet says it's
> something else individual, but who knows.
Hm... forgive my ignorance; how do I do that? FWIW here's the content
of /proc/asound/card0/codec#0:
Codec: Conexant CX20724
Address: 0
AFG Function Id: 0x1 (unsol 1)
Vendor Id: 0x14f150f4
Subsystem Id: 0x103c814d
Revision Id: 0x100109
No Modem Function Group found
Default PCM:
rates [0x140]: 48000 96000
bits [0xa]: 16 24
formats [0x1]: PCM
Default Amp-In caps: N/A
Default Amp-Out caps: N/A
State of AFG node 0x01:
Power states: D0 D1 D2 D3 D3cold S3D3cold CLKSTOP EPSS
Power: setting=D0, actual=D0
GPIO: io=7, o=0, i=0, unsolicited=1, wake=1
IO[0]: enable=1, dir=1, wake=0, sticky=0, data=0, unsol=0
IO[1]: enable=1, dir=1, wake=0, sticky=0, data=0, unsol=0
IO[2]: enable=0, dir=0, wake=0, sticky=0, data=0, unsol=0
IO[3]: enable=0, dir=0, wake=0, sticky=0, data=0, unsol=0
IO[4]: enable=0, dir=0, wake=0, sticky=0, data=0, unsol=0
IO[5]: enable=0, dir=0, wake=0, sticky=0, data=0, unsol=0
IO[6]: enable=0, dir=0, wake=0, sticky=0, data=0, unsol=0
Node 0x10 [Audio Output] wcaps 0xc1d: Stereo Amp-Out R/L
Control: name="Speaker+LO Playback Volume", index=0, device=0
ControlAmp: chs=3, dir=Out, idx=0, ofs=0
Control: name="Speaker+LO Playback Switch", index=0, device=0
ControlAmp: chs=3, dir=Out, idx=0, ofs=0
Device: name="CX20724 Analog", type="Audio", device=0
Amp-Out caps: ofs=0x4a, nsteps=0x4a, stepsize=0x03, mute=1
Amp-Out vals: [0x80 0x80]
Converter: stream=1, channel=0
PCM:
rates [0x540]: 48000 96000 192000
bits [0xa]: 16 24
formats [0x1]: PCM
Power states: D0 D1 D2 D3 EPSS
Power: setting=D0, actual=D0
Node 0x11 [Audio Output] wcaps 0xc1d: Stereo Amp-Out R/L
Control: name="Headphone Playback Volume", index=0, device=0
ControlAmp: chs=3, dir=Out, idx=0, ofs=0
Control: name="Headphone Playback Switch", index=0, device=0
ControlAmp: chs=3, dir=Out, idx=0, ofs=0
Amp-Out caps: ofs=0x4a, nsteps=0x4a, stepsize=0x03, mute=1
Amp-Out vals: [0x3d 0x3d]
Converter: stream=1, channel=0
PCM:
rates [0x540]: 48000 96000 192000
bits [0xa]: 16 24
formats [0x1]: PCM
Power states: D0 D1 D2 D3 EPSS
Power: setting=D0, actual=D0
Node 0x12 [Beep Generator Widget] wcaps 0x70000c: Mono Amp-Out
Control: name="Beep Playback Volume", index=0, device=0
ControlAmp: chs=1, dir=Out, idx=0, ofs=0
Control: name="Beep Playback Switch", index=0, device=0
ControlAmp: chs=1, dir=Out, idx=0, ofs=0
Amp-Out caps: ofs=0x07, nsteps=0x07, stepsize=0x0f, mute=0
Amp-Out vals: [0x03]
Node 0x13 [Audio Input] wcaps 0x100d1b: Stereo Amp-In R/L
Control: name="Capture Volume", index=0, device=0
ControlAmp: chs=3, dir=In, idx=0, ofs=0
Control: name="Capture Switch", index=0, device=0
ControlAmp: chs=3, dir=In, idx=0, ofs=0
Device: name="CX20724 Analog", type="Audio", device=0
Amp-In caps: ofs=0x4a, nsteps=0x50, stepsize=0x03, mute=1
Amp-In vals: [0x50 0x50] [0x50 0x50] [0x50 0x50] [0x80 0x80] [0x80 0x80] [0x80 0x80] [0x80 0x80]
Converter: stream=1, channel=0
SDI-Select: 0
PCM:
rates [0x140]: 48000 96000
bits [0xa]: 16 24
formats [0x1]: PCM
Power states: D0 D1 D2 D3 EPSS
Power: setting=D0, actual=D0
Connection: 7
0x18 0x19* 0x1a 0x15 0x1d 0x1e 0x1f
Node 0x14 [Audio Input] wcaps 0x100d1b: Stereo Amp-In R/L
Amp-In caps: ofs=0x4a, nsteps=0x50, stepsize=0x03, mute=1
Amp-In vals: [0x4a 0x4a] [0x4a 0x4a] [0x4a 0x4a]
Converter: stream=0, channel=0
SDI-Select: 0
PCM:
rates [0x140]: 48000 96000
bits [0xa]: 16 24
formats [0x1]: PCM
Power states: D0 D1 D2 D3 EPSS
Power: setting=D0, actual=D0
Connection: 3
0x1a* 0x15 0x1f
Node 0x15 [Vendor Defined Widget] wcaps 0xf0050b: Stereo Amp-In
Amp-In caps: ofs=0x4a, nsteps=0x4a, stepsize=0x03, mute=1
Amp-In vals: [0x4a 0x4a] [0x4a 0x4a]
Power states: D0 D1 D2 D3 EPSS
Power: setting=D0, actual=D0
Connection: 2
0x10* 0x11
Node 0x16 [Pin Complex] wcaps 0x400581: Stereo
Pincap 0x0001001c: OUT HP EAPD Detect
EAPD 0x0:
Pin Default 0x40f001f0: [N/A] Other at Ext N/A
Conn = Unknown, Color = Unknown
DefAssociation = 0xf, Sequence = 0x0
Misc = NO_PRESENCE
Pin-ctls: 0x40: OUT
Unsolicited: tag=02, enabled=1
Power states: D0 D1 D2 D3 EPSS
Power: setting=D0, actual=D0
Connection: 2
0x10* 0x11
Node 0x17 [Pin Complex] wcaps 0x400501: Stereo
Pincap 0x00010010: OUT EAPD
EAPD 0x0:
Pin Default 0x91170110: [Fixed] Speaker at Int Rear
Conn = Analog, Color = Unknown
DefAssociation = 0x1, Sequence = 0x0
Misc = NO_PRESENCE
Pin-ctls: 0x40: OUT
Power states: D0 D1 D2 D3 EPSS
Power: setting=D0, actual=D0
Connection: 2
0x10* 0x11
Node 0x18 [Pin Complex] wcaps 0x40048b: Stereo Amp-In
Control: name="Line Boost Volume", index=0, device=0
ControlAmp: chs=3, dir=In, idx=0, ofs=0
Amp-In caps: ofs=0x00, nsteps=0x03, stepsize=0x2f, mute=0
Amp-In vals: [0x00 0x00]
Pincap 0x00001324: IN Detect
Vref caps: HIZ 50 80
Pin Default 0x40f001f0: [N/A] Other at Ext N/A
Conn = Unknown, Color = Unknown
DefAssociation = 0xf, Sequence = 0x0
Misc = NO_PRESENCE
Pin-ctls: 0x20: IN VREF_HIZ
Unsolicited: tag=05, enabled=1
Power states: D0 D1 D2 D3 EPSS
Power: setting=D0, actual=D0
Node 0x19 [Pin Complex] wcaps 0x40048b: Stereo Amp-In
Control: name="Mic Boost Volume", index=0, device=0
ControlAmp: chs=3, dir=In, idx=0, ofs=0
Amp-In caps: ofs=0x00, nsteps=0x03, stepsize=0x2f, mute=0
Amp-In vals: [0x03 0x03]
Pincap 0x00001324: IN Detect
Vref caps: HIZ 50 80
Pin Default 0x04a11030: [Jack] Mic at Ext Right
Conn = 1/8, Color = Black
DefAssociation = 0x3, Sequence = 0x0
Pin-ctls: 0x24: IN VREF_80
Unsolicited: tag=03, enabled=1
Power states: D0 D1 D2 D3 EPSS
Power: setting=D0, actual=D0
Node 0x1a [Pin Complex] wcaps 0x40040b: Stereo Amp-In
Control: name="Internal Mic Boost Volume", index=0, device=0
ControlAmp: chs=3, dir=In, idx=0, ofs=0
Amp-In caps: ofs=0x00, nsteps=0x03, stepsize=0x2f, mute=0
Amp-In vals: [0x00 0x00]
Pincap 0x00000020: IN
Pin Default 0x95a60120: [Fixed] Mic at Int Top
Conn = Digital, Color = Unknown
DefAssociation = 0x2, Sequence = 0x0
Misc = NO_PRESENCE
Pin-ctls: 0x20: IN
Power states: D0 D1 D2 D3 EPSS
Power: setting=D0, actual=D0
Node 0x1b [Vendor Defined Widget] wcaps 0xf00000: Mono
Node 0x1c [Vendor Defined Widget] wcaps 0xf00000: Mono
Node 0x1d [Pin Complex] wcaps 0x40058b: Stereo Amp-In
Amp-In caps: ofs=0x00, nsteps=0x03, stepsize=0x2f, mute=0
Amp-In vals: [0x00 0x00]
Pincap 0x0001133c: IN OUT HP EAPD Detect
Vref caps: HIZ 50 80
EAPD 0x0:
Pin Default 0x04211040: [Jack] HP Out at Ext Right
Conn = 1/8, Color = Black
DefAssociation = 0x4, Sequence = 0x0
Pin-ctls: 0xc0: OUT HP VREF_HIZ
Unsolicited: tag=01, enabled=1
Power states: D0 D1 D2 D3 EPSS
Power: setting=D0, actual=D0
Connection: 2
0x10 0x11*
Node 0x1e [Pin Complex] wcaps 0x40048b: Stereo Amp-In
Amp-In caps: ofs=0x00, nsteps=0x03, stepsize=0x2f, mute=0
Amp-In vals: [0x00 0x00]
Pincap 0x00000024: IN Detect
Pin Default 0x40f001f0: [N/A] Other at Ext N/A
Conn = Unknown, Color = Unknown
DefAssociation = 0xf, Sequence = 0x0
Misc = NO_PRESENCE
Pin-ctls: 0x00:
Unsolicited: tag=00, enabled=0
Power states: D0 D1 D2 D3 EPSS
Power: setting=D0, actual=D0
Node 0x1f [Pin Complex] wcaps 0x40040b: Stereo Amp-In
Amp-In caps: ofs=0x00, nsteps=0x03, stepsize=0x2f, mute=0
Amp-In vals: [0x00 0x00]
Pincap 0x00000020: IN
Pin Default 0x40f001f0: [N/A] Other at Ext N/A
Conn = Unknown, Color = Unknown
DefAssociation = 0xf, Sequence = 0x0
Misc = NO_PRESENCE
Pin-ctls: 0x00:
Power states: D0 D1 D2 D3 EPSS
Power: setting=D0, actual=D0
Node 0x20 [Audio Output] wcaps 0x611: Stereo Digital
Converter: stream=0, channel=0
Digital:
Digital category: 0x0
IEC Coding Type: 0x0
PCM:
rates [0x540]: 48000 96000 192000
bits [0xe]: 16 20 24
formats [0x5]: PCM AC3
Power states: D0 D1 D2 D3 EPSS
Power: setting=D0, actual=D0
Node 0x21 [Pin Complex] wcaps 0x400701: Stereo Digital
Pincap 0x00000010: OUT
Pin Default 0x40f001f0: [N/A] Other at Ext N/A
Conn = Unknown, Color = Unknown
DefAssociation = 0xf, Sequence = 0x0
Misc = NO_PRESENCE
Pin-ctls: 0x00:
Power states: D0 D1 D2 D3 EPSS
Power: setting=D0, actual=D0
Connection: 1
0x20
Node 0x22 [Pin Complex] wcaps 0x400501: Stereo
Pincap 0x00010010: OUT EAPD
EAPD 0x0:
Pin Default 0x40f001f0: [N/A] Other at Ext N/A
Conn = Unknown, Color = Unknown
DefAssociation = 0xf, Sequence = 0x0
Misc = NO_PRESENCE
Pin-ctls: 0x00:
Power states: D0 D1 D2 D3 EPSS
Power: setting=D0, actual=D0
Connection: 2
0x10* 0x11
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