Refer to http://www.analog.com/en/audiovideo-products/audio-codecs/ad1988a/products/p...

20 Analog Mixer Audio mixer Mixes individual gain analog inputs 21 Mixer Output Attenuator Audio selector Attenuates the mixer output to drive the port mixers

patch_analog.c create "Analog Mix Playback"volume control/switch for node 0x21

when any one of the three [Audio selector] Input source conrol select "mix" ( node 0x20) it seem need to mute the node 0x21 and umute "Line Playback Switch" to get the signal from 0x20

But when using "Line Playback volume" (route the input from. blue jack to green jack ) when you plug the output of other audio device (e.g. TV card ) into blue jack, "Analog Mix Playback Switch" need to be unmute and "Analog Mix Playback Volume" to be set at level selected by user

Does this mean that ad1988 may need to implement its a specific snd_hda_input_mux_put() to handle the above requirement ?

Simple mixer control 'Input Source',0 Capabilities: cenum Items: 'Front Mic' 'Rear Mic' 'Line' 'CD' 'Mix' Item0: 'Front Mic' Simple mixer control 'Input Source',1 Capabilities: cenum Items: 'Front Mic' 'Rear Mic' 'Line' 'CD' 'Mix' Item0: 'Front Mic' Simple mixer control 'Input Source',2 Capabilities: cenum Items: 'Front Mic' 'Rear Mic' 'Line' 'CD' 'Mix' Item0: 'Front Mic'

Node 0x0c [Audio Selector] wcaps 0x30010d: Stereo Amp-Out 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 Control: name="Input Source", index=0, device=0 Amp-Out caps: ofs=0x27, nsteps=0x36, stepsize=0x05, mute=1 Amp-Out vals: [0x27 0x27] Connection: 10 0x38 0x39* 0x3a 0x3b 0x3c 0x18 0x24 0x25 0x3d 0x20 Node 0x0d [Audio Selector] wcaps 0x30010d: Stereo Amp-Out Control: name="Capture Volume", index=1, device=0 ControlAmp: chs=3, dir=Out, idx=0, ofs=0 Control: name="Capture Switch", index=1, device=0 ControlAmp: chs=3, dir=Out, idx=0, ofs=0 Control: name="Input Source", index=1, device=0 Amp-Out caps: ofs=0x27, nsteps=0x36, stepsize=0x05, mute=1 Amp-Out vals: [0xa7 0xa7] Connection: 10 0x38 0x39* 0x3a 0x3b 0x3c 0x18 0x24 0x25 0x3d 0x20 Node 0x0e [Audio Selector] wcaps 0x30010d: Stereo Amp-Out Control: name="Capture Volume", index=2, device=0 ControlAmp: chs=3, dir=Out, idx=0, ofs=0 Control: name="Capture Switch", index=2, device=0 ControlAmp: chs=3, dir=Out, idx=0, ofs=0 Control: name="Input Source", index=2, device=0 Amp-Out caps: ofs=0x27, nsteps=0x36, stepsize=0x05, mute=1 Amp-Out vals: [0xa7 0xa7] Connection: 10 0x38 0x39* 0x3a 0x3b 0x3c 0x18 0x24 0x25 0x3d 0x20

Node 0x20 [Audio Mixer] wcaps 0x20010b: Stereo Amp-In Control: name="Front Mic Playback Volume", index=0, device=0 ControlAmp: chs=3, dir=In, idx=0, ofs=0 Control: name="Front Mic Playback Switch", index=0, device=0 ControlAmp: chs=3, dir=In, idx=0, ofs=0 Control: name="Rear Mic Playback Volume", index=0, device=0 ControlAmp: chs=3, dir=In, idx=4, ofs=0 Control: name="Rear Mic Playback Switch", index=0, device=0 ControlAmp: chs=3, dir=In, idx=4, ofs=0 Control: name="Line Playback Volume", index=0, device=0 ControlAmp: chs=3, dir=In, idx=1, ofs=0 Control: name="Line Playback Switch", index=0, device=0 ControlAmp: chs=3, dir=In, idx=1, ofs=0 Control: name="CD Playback Volume", index=0, device=0 ControlAmp: chs=3, dir=In, idx=6, ofs=0 Control: name="CD Playback Switch", index=0, device=0 ControlAmp: chs=3, dir=In, idx=6, ofs=0 Amp-In caps: ofs=0x17, nsteps=0x1f, stepsize=0x05, mute=1 Amp-In vals: [0x80 0x80] [0x80 0x80] [0x80 0x80] [0x80 0x80] [0x80 0x80] [0x80 0x80] [0x80 0x80] [0x80 0x80] Connection: 8 0x39 0x33 0x38 0x3d 0x34 0x3b 0x18 0x1a Node 0x21 [Audio Selector] wcaps 0x30010d: Stereo Amp-Out Control: name="Analog Mix Playback Volume", index=0, device=0 ControlAmp: chs=3, dir=Out, idx=0, ofs=0 Control: name="Analog Mix Playback Switch", index=0, device=0 ControlAmp: chs=3, dir=Out, idx=0, ofs=0 Amp-Out caps: ofs=0x1f, nsteps=0x1f, stepsize=0x05, mute=1 Amp-Out vals: [0x80 0x80] Connection: 1 0x20