2012-10-15 下午4:35 於 "Takashi Iwai" tiwai@suse.de 寫道：
At Mon, 15 Oct 2012 16:15:20 +0800, Raymond Yau wrote:
2012-10-15 下午3:46 於 "Takashi Iwai" tiwai@suse.de 寫道：
At Mon, 15 Oct 2012 10:31:50 +0800, Raymond Yau wrote:
2012-10-12 下午11:19 於 "Takashi Iwai" tiwai@suse.de 寫道：
Hi,
there is a long-standing problem in HD-audio regarding IEC958 controls. When both an SPDIF and an HDMI are created on the same card (e.g. one from analog codec and one from graphics chip), the driver assigns the IEC958 controls just with new indices, 0, 1,
2...
The problem is that there is no way to connect between this index
and
the actual PCM device. Currently, alsa-lib HDA-Intel.conf has a
fixed
configuration: spdif -> IEC958 xxx index=0, PCM dev=1 hdmi,0 -> IEC958 xxx index=0, PCM dev=3 hdmi,1 -> IEC958 xxx index=1, PCM dev=7 hdmi,2 -> IEC958 xxx index=2, PCM dev=8 hdmi,3 -> IEC958 xxx index=3, PCM dev=9
So obviously spdif and the first hdmi conflict.
Basically this can be fixed by reassigning each IEC958 control
with
the same device number corresponding to the PCM device. That is,
for
SPDIF, assign a control element with device=1, for HDMI, device=3,7... However, this obviously breaks the old configuration unless user upgrades the alsa-lib configuration. Thus this is no-go.
Now here is a compromise: the IEC958 control for SPDIF is
reassigned
to device=1 *only* when SPDIF and HDMI coexist. Since the configuration is anyway broken as is now in such a case, it's no
big
deal to fix one side in an incompatible way. (The reason why
SPDIF
is re-assigned is that I guess majority of user require more HDMI
than
SPDIF in such a configuration.)
In addition, we need a fix in alsa-lib. Also not for breaking the compatibility with older kernel, we need some fallback check. I
did a
quick hack to alsa-lib conf code and added "skip_rest" option to
the
hook element, so that only the first matching element is taken.
how about those hdmi jack and iec958 on ad1989b?
On AD codecs, all digital outputs are exposed as a single cloned device with HDA_PCM_TYPE_SPDIF.
how about ad1988b with nvidia codec ?
Nvidia codec provides devices only with HDA_PCM_TYPE_HDMI, of course.
from user point of view , how can they differenitate hdmi jack is
digital
ouput and hdmi output ?
The device 1 is from AD and the device 3 is from Nvidia codec, as you can see below. And this is exactly the case the conflict happens as I mentioned in the original mail.
will your fix change the spdif of those motherboard with ad1988b which have iec958 but no hdmi jack ?
the current implementation does not expose the number of output streams supported by the hda controller
ich8 seem support 4 ouput streams , how many output streams supported by the nvidia controller
Which is connected to what output, you can't know exactly unless you compare the obtained ELD. The HD-audio spec isn't good enough to identify the actual output.
it seem that there is no presence detect on this codec
Codec: Nvidia MCP77/78 HDMI Address: 3 AFG Function Id: 0x1 (unsol 0) Vendor Id: 0x10de0002 Subsystem Id: 0x10de0101 Revision Id: 0x100000 No Modem Function Group found Default PCM: rates [0x0]: bits [0x0]: formats [0x0]: Default Amp-In caps: N/A Default Amp-Out caps: N/A GPIO: io=0, o=0, i=0, unsolicited=0, wake=0 Node 0x04 [Audio Output] wcaps 0x211: Stereo Digital Control: name="IEC958 Playback Con Mask", index=1, device=0 Control: name="IEC958 Playback Pro Mask", index=1, device=0 Control: name="IEC958 Playback Default", index=1, device=0 Control: name="IEC958 Playback Switch", index=1, device=0 Device: name="HDMI 0", type="HDMI", device=3 Converter: stream=0, channel=0 Digital: Digital category: 0x0 PCM: rates [0xc0]: 48000 88200 bits [0xf]: 8 16 20 24 formats [0x1]: PCM Node 0x05 [Pin Complex] wcaps 0x400381: Stereo Digital Pincap 0x00000014: OUT Detect Pin Default 0x18560110: [Jack] Digital Out at Int HDMI Conn = Digital, Color = Unknown DefAssociation = 0x1, Sequence = 0x0 Misc = NO_PRESENCE Pin-ctls: 0x40: OUT Unsolicited: tag=00, enabled=0 Connection: 1 0x04
Takashi
https://bugs.launchpad.net/ubuntu/+source/pulseaudio/+bug/881826
**** List of PLAYBACK Hardware Devices **** card 0: NVidia [HDA NVidia], device 0: AD198x Analog [AD198x Analog] Subdevices: 1/1 Subdevice #0: subdevice #0 card 0: NVidia [HDA NVidia], device 1: AD198x Digital [AD198x Digital] Subdevices: 1/1 Subdevice #0: subdevice #0 card 0: NVidia [HDA NVidia], device 3: HDMI 0 [HDMI 0] Subdevices: 1/1 Subdevice #0: subdevice #0