2015-8-10 上午11:15於 "Yang, Libin" libin.yang@intel.com寫道：
Hi Raymond,
}
- if (is_haswell_plus(codec)) {
if (acomp && acomp->ops && acomp->ops->set_ncts)acomp->ops->set_ncts(acomp->dev, per_pin-pin_nid - 4,
Please describe more how "pin_nid - 4" is supposed to work. Also...
OK, I see.
0, runtime->rate);... this implies that no MST support included?
We will support MST later. Currently I just add the interface to support MST, but not implementing it.
Refer to DCN HDA040-A Multi-stream over Single Display Port Can the driver use subdevices for those display port support multi
streaming ?
[Libin] What do you mean subdevice here, using a struct device to represent a dev_entry or an int type?
http://git.kernel.org/cgit/linux/kernel/git/tiwai/hda-emu.git/tree/codecs/st...
When HDA codecs have three Audio Input widgets, the driver create three subdevices for those desktop which have three or more input sources in the past
ARECORD
**** List of CAPTURE Hardware Devices **** card 0: Intel [HDA Intel], device 0: STAC92xx Analog [STAC92xx Analog] Subdevices: 3/3 Subdevice #0: subdevice #0 Subdevice #1: subdevice #1 Subdevice #2: subdevice #2
With the auto generic parser , the driver create one subdevice for Analog two subdevices for Alt Analog
**** List of CAPTURE Hardware Devices **** card 0: Intel [HDA Intel], device 0: STAC92xx Analog [STAC92xx Analog] Subdevices: 1/1 Subdevice #0: subdevice #0 card 0: Intel [HDA Intel], device 2: STAC92xx Alt Analog [STAC92xx Alt Analog] Subdevices: 2/2 Subdevice #0: subdevice #0 Subdevice #1: subdevice #1
The specification allow up to 64 device entries This mean the number of subdevices is equal to the device list length More than one audio output /converters can be connected to the multi
stream displayport pin widget but different device entry while only one audio output can be dynamically allocated to other HDMI pin widget
[Libin] Yes, Pin widget can have multiple device entry and connecting
different converters. The audio output will be based on device entry.