I'm trying to nail down a strange behaviour. I have one "Master" and one
"Speaker" (or "Headphone") volume control, each ranging from -48 dB to 0
dB. Whenever the sum of "Master" and "Speaker" is below -48 dB, the
output mutes. Codec is attached.
"Master" is a "Virtual master" control, and both "Master" and "Speaker"
control amp-out on nid 0x13. Nid 0x13 does not have amp-out caps, but
the AFG specifies a range of -96 dB to 0 dB in 0.75 dB steps.
There is some strange things here. First, in
patch_sigmatel:create_controls_idx, there is this comment:
/* if dB scale is over -64dB, and finer enough,
* let's reduce it to half
*/
Hmm? Removing half of the volume slider?
Second, assuming we actually buy this decision, wouldn't it make sense
for people to be able to combine Master and Speaker to get the full -96
to 0 dB range? Instead, "Master" is just working over the range defined
by "Speaker".
Third, there is an interesting condition in hda_codec.c:update_amp_value:
if (val > 0)
val += ofs;
Now this is in practice turning all volume controls which have ofs (e g
those being "reduced to half") to a minimum-is-mute error: I can set the
amp value to either 0 (-96 dB) or the 65 - 127 range (~ -48 dB - 0 dB).
So it isn't really mute, it's -96 dB signal, but I can't hear that anyway.
So; I think I understand the problem, but I'm not sure of where I should
try to patch it, to make the best solution.
Finally, is there right to exist for both "virtual masters" and the
"PCM" softvol talked about a while ago? If I were to decide, I'd
personally like them both removed (the additional complexity isn't
motivated IMO), but wouldn't it at least make sense to name the virtual
master "PCM", to avoid the PCM softvol?
--
David Henningsson, Canonical Ltd.
http://launchpad.net/~diwic
Codec: IDT 92HD81B1X5
Address: 0
Function Id: 0x1
Vendor Id: 0x111d7605
Subsystem Id: 0x103c1413
Revision Id: 0x100402
No Modem Function Group found
Default PCM:
rates [0x5e0]: 44100 48000 88200 96000 192000
bits [0xe]: 16 20 24
formats [0x1]: PCM
Default Amp-In caps: ofs=0x00, nsteps=0x03, stepsize=0x27, mute=0
Default Amp-Out caps: ofs=0x7f, nsteps=0x7f, stepsize=0x02, mute=1
GPIO: io=3, 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=0, dir=0, wake=0, sticky=0, data=0, unsol=0
IO[2]: enable=0, dir=0, wake=0, sticky=0, data=0, unsol=0
Power-Map: 0x00
Node 0x0a [Pin Complex] wcaps 0x400583: Stereo Amp-In
Control: name="Mic Jack Mode", index=0, device=0
ControlAmp: chs=0, dir=In, idx=0, ofs=0
Control: name="Mic Capture Volume", index=0, device=0
ControlAmp: chs=3, dir=In, idx=0, ofs=0
Amp-In caps: N/A
Amp-In vals: [0x00 0x00]
Pincap 0x0001173c: IN OUT HP EAPD Detect
Vref caps: HIZ 50 GRD 80
EAPD 0x2: EAPD
Pin Default 0x03a19020: [Jack] Mic at Ext Left
Conn = 1/8, Color = Pink
DefAssociation = 0x2, Sequence = 0x0
Pin-ctls: 0x24: IN VREF_80
Unsolicited: tag=02, enabled=1
Power: setting=D0, actual=D0
Connection: 3
0x13* 0x14 0x1c
Node 0x0b [Pin Complex] wcaps 0x400581: Stereo
Pincap 0x0001001c: OUT HP EAPD Detect
EAPD 0x2: EAPD
Pin Default 0x0321401f: [Jack] HP Out at Ext Left
Conn = 1/8, Color = Green
DefAssociation = 0x1, Sequence = 0xf
Pin-ctls: 0xc0: OUT HP
Unsolicited: tag=01, enabled=1
Power: setting=D0, actual=D0
Connection: 3
0x13 0x14* 0x1c
Node 0x0c [Pin Complex] wcaps 0x400583: Stereo Amp-In
Amp-In caps: N/A
Amp-In vals: [0x00 0x00]
Pincap 0x00011734: IN OUT EAPD Detect
Vref caps: HIZ 50 GRD 80
EAPD 0x2: EAPD
Pin Default 0x40f000f0: [N/A] Other at Ext N/A
Conn = Unknown, Color = Unknown
DefAssociation = 0xf, Sequence = 0x0
Pin-ctls: 0x00: VREF_HIZ
Unsolicited: tag=00, enabled=0
Power: setting=D0, actual=D0
Connection: 3
0x13* 0x14 0x1c
Node 0x0d [Pin Complex] wcaps 0x400501: Stereo
Pincap 0x00010050: OUT EAPD Balanced
EAPD 0x2: EAPD
Pin Default 0x90170110: [Fixed] Speaker at Int N/A
Conn = Analog, Color = Unknown
DefAssociation = 0x1, Sequence = 0x0
Misc = NO_PRESENCE
Pin-ctls: 0x00:
Power: setting=D0, actual=D0
Connection: 3
0x13* 0x14 0x1c
Node 0x0e [Pin Complex] wcaps 0x400583: Stereo Amp-In
Amp-In caps: N/A
Amp-In vals: [0x00 0x00]
Pincap 0x00010034: IN OUT EAPD Detect
EAPD 0x2: EAPD
Pin Default 0x40f000f0: [N/A] Other at Ext N/A
Conn = Unknown, Color = Unknown
DefAssociation = 0xf, Sequence = 0x0
Pin-ctls: 0x00:
Unsolicited: tag=00, enabled=0
Power: setting=D0, actual=D0
Connection: 3
0x13 0x14* 0x1c
Node 0x0f [Pin Complex] wcaps 0x400583: Stereo Amp-In
Amp-In caps: N/A
Amp-In vals: [0x00 0x00]
Pincap 0x00010034: IN OUT EAPD Detect
EAPD 0x2: EAPD
Pin Default 0x40f000f0: [N/A] Other at Ext N/A
Conn = Unknown, Color = Unknown
DefAssociation = 0xf, Sequence = 0x0
Pin-ctls: 0x00:
Unsolicited: tag=00, enabled=0
Power: setting=D0, actual=D0
Connection: 3
0x13 0x14* 0x1c
Node 0x10 [Pin Complex] wcaps 0x400500: Mono
Pincap 0x00000010: OUT
Pin Default 0x40f000f0: [N/A] Other at Ext N/A
Conn = Unknown, Color = Unknown
DefAssociation = 0xf, Sequence = 0x0
Pin-ctls: 0x00:
Power: setting=D0, actual=D0
Connection: 1
0x1a
Node 0x11 [Pin Complex] wcaps 0x400483: Stereo Amp-In
Control: name="Front Mic Capture Volume", index=0, device=0
ControlAmp: chs=3, dir=In, idx=0, ofs=0
Amp-In caps: N/A
Amp-In vals: [0x01 0x01]
Pincap 0x00000024: IN Detect
Pin Default 0x90a60130: [Fixed] Mic at Int N/A
Conn = Digital, Color = Unknown
DefAssociation = 0x3, Sequence = 0x0
Misc = NO_PRESENCE
Pin-ctls: 0x20: IN
Unsolicited: tag=00, enabled=0
Power: setting=D0, actual=D0
Node 0x12 [Vendor Defined Widget] wcaps 0xf00503: Stereo Amp-In
Amp-In caps: N/A
Amp-In vals: [0x00 0x00]
Power: setting=D0, actual=D0
Connection: 1
0x20
Node 0x13 [Audio Output] wcaps 0xd0c05: Stereo Amp-Out R/L
Control: name="Speaker Playback Volume", index=0, device=0
ControlAmp: chs=3, dir=Out, idx=0, ofs=63
Control: name="Speaker Playback Switch", index=0, device=0
ControlAmp: chs=3, dir=Out, idx=0, ofs=0
Device: name="STAC92xx Analog", type="Audio", device=0
Amp-Out caps: N/A
Amp-Out vals: [0x41 0x41]
Converter: stream=5, channel=0
Power: setting=D0, actual=D0
Delay: 13 samples
Node 0x14 [Audio Output] wcaps 0xd0c05: Stereo Amp-Out R/L
Control: name="Headphone Playback Volume", index=0, device=0
ControlAmp: chs=3, dir=Out, idx=0, ofs=63
Control: name="Headphone Playback Switch", index=0, device=0
ControlAmp: chs=3, dir=Out, idx=0, ofs=0
Amp-Out caps: N/A
Amp-Out vals: [0x40 0x40]
Converter: stream=5, channel=0
Power: setting=D0, actual=D0
Delay: 13 samples
Node 0x15 [Audio Input] wcaps 0x1d0541: Stereo
Device: name="STAC92xx Analog", type="Audio", device=0
Converter: stream=0, channel=0
SDI-Select: 0
Power: setting=D0, actual=D0
Delay: 13 samples
Connection: 1
0x17
Processing caps: benign=0, ncoeff=0
Node 0x16 [Audio Input] wcaps 0x1d0541: Stereo
Converter: stream=0, channel=0
SDI-Select: 0
Power: setting=D0, actual=D0
Delay: 13 samples
Connection: 1
0x18
Processing caps: benign=0, ncoeff=0
Node 0x17 [Audio Selector] wcaps 0x300d0d: Stereo Amp-Out R/L
Control: name="Capture Volume", index=0, device=0
ControlAmp: chs=3, dir=Out, idx=0, ofs=0
Control: name="Capture Switch", index=0, device=0
ControlAmp: chs=3, dir=Out, idx=0, ofs=0
Amp-Out caps: ofs=0x00, nsteps=0x0f, stepsize=0x05, mute=1
Amp-Out vals: [0x00 0x00]
Power: setting=D0, actual=D0
Connection: 7
0x0c 0x0e 0x0f 0x1b 0x11* 0x12 0x0a
Node 0x18 [Audio Selector] wcaps 0x300d0d: Stereo Amp-Out R/L
Amp-Out caps: ofs=0x00, nsteps=0x0f, stepsize=0x05, mute=1
Amp-Out vals: [0x80 0x80]
Power: setting=D0, actual=D0
Connection: 7
0x0c* 0x0e 0x0f 0x1b 0x11 0x12 0x0a
Node 0x19 [Audio Selector] wcaps 0x300501: Stereo
Power: setting=D0, actual=D0
Connection: 3
0x13* 0x14 0x1c
Node 0x1a [Audio Mixer] wcaps 0x200500: Mono
Power: setting=D0, actual=D0
Connection: 1
0x19
Node 0x1b [Audio Mixer] wcaps 0x20050b: Stereo Amp-In
Amp-In caps: ofs=0x17, nsteps=0x1f, stepsize=0x05, mute=1
Amp-In vals: [0x97 0x97] [0x97 0x97] [0x97 0x97] [0x97 0x97] [0x97 0x97] [0x97 0x97]
Power: setting=D0, actual=D0
Connection: 6
0x0c 0x0e 0x0f 0x13 0x14 0x0a
Node 0x1c [Audio Selector] wcaps 0x30050d: Stereo Amp-Out
Amp-Out caps: ofs=0x1f, nsteps=0x1f, stepsize=0x05, mute=1
Amp-Out vals: [0x9f 0x9f]
Power: setting=D0, actual=D0
Connection: 1
0x1b
Node 0x1d [Audio Output] wcaps 0x4061d: Stereo Digital Amp-Out
Amp-Out caps: ofs=0x00, nsteps=0x00, stepsize=0x00, mute=1
Amp-Out vals: [0x00 0x00]
Converter: stream=0, channel=0
Digital:
Digital category: 0x0
PCM:
rates [0x5e0]: 44100 48000 88200 96000 192000
bits [0xe]: 16 20 24
formats [0x5]: PCM AC3
Power: setting=D0, actual=D0
Delay: 4 samples
Node 0x1e [Audio Output] wcaps 0x4061d: Stereo Digital Amp-Out
Amp-Out caps: ofs=0x00, nsteps=0x00, stepsize=0x00, mute=1
Amp-Out vals: [0x00 0x00]
Converter: stream=0, channel=0
Digital:
Digital category: 0x0
PCM:
rates [0x5e0]: 44100 48000 88200 96000 192000
bits [0xe]: 16 20 24
formats [0x5]: PCM AC3
Power: setting=D0, actual=D0
Delay: 4 samples
Node 0x1f [Pin Complex] wcaps 0x400781: Stereo Digital
Pincap 0x00000014: OUT Detect
Pin Default 0x40f000f0: [N/A] Other at Ext N/A
Conn = Unknown, Color = Unknown
DefAssociation = 0xf, Sequence = 0x0
Pin-ctls: 0x00:
Unsolicited: tag=00, enabled=0
Power: setting=D0, actual=D0
Connection: 1
0x1d
Node 0x20 [Pin Complex] wcaps 0x400781: Stereo Digital
Pincap 0x00000034: IN OUT Detect
Pin Default 0x40f000f0: [N/A] Other at Ext N/A
Conn = Unknown, Color = Unknown
DefAssociation = 0xf, Sequence = 0x0
Pin-ctls: 0x00:
Unsolicited: tag=00, enabled=0
Power: setting=D0, actual=D0
Connection: 1
0x1e
Node 0x21 [Beep Generator Widget] wcaps 0x70000c: Mono Amp-Out
Control: name="Beep Playback Switch", index=0, device=0
ControlAmp: chs=1, dir=Out, idx=0, ofs=0
Control: name="Beep Playback Volume", index=0, device=0
ControlAmp: chs=1, dir=Out, idx=0, ofs=0
Amp-Out caps: ofs=0x03, nsteps=0x03, stepsize=0x17, mute=1
Amp-Out vals: [0x00]
Node 0x22 [Vendor Defined Widget] wcaps 0xf00000: Mono
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