Re: [Alsa-user] CM6206-LX usb sound card problem

2016-03-04 Thread Nikita Orlov
So, I have found CM6206 datasheet via baidu.cn. I think most things must be similar to mine CM6206-LX chip. It is unclear how to download pdf file, I am not very familiar with china language. There is description of internal registers. There is no much interesting settings, already existed initi

Re: [Alsa-user] CM6206-LX usb sound card problem

2016-03-04 Thread Nikita Orlov
I don`t know much about it. But I can think following way as both C6206 and CM6206LX have same ID, original Windows driver can read some internal register and get such info. I will try to find datasheets for both chips and see it. As I know from mailing list archives reg init in quirk was done b

Re: [Alsa-user] CM6206-LX usb sound card problem

2016-03-04 Thread Clemens Ladisch
Nikita Orlov wrote: > By the way CM6206-LX if different to CM6206. > CM6206 has 7.1 channels output and CM6206-LX has 5.1 channels output. > > Maybe these init: > static int snd_usb_cm6206_boot_quirk(struct usb_device *dev) > ... > is not sutible to -LX version, because it somehow try turn off

Re: [Alsa-user] CM6206-LX usb sound card problem

2016-03-03 Thread Nikita Orlov
By the way CM6206-LX if different to CM6206. CM6206 has 7.1 channels output and CM6206-LX has 5.1 channels output. Maybe these init: /* * C-Media CM6206 is based on CM106 with two additional * registers that are not documented in the data sheet. * Values here are chosen based on sniffing USB t

Re: [Alsa-user] CM6206-LX usb sound card problem

2016-03-03 Thread Nikita Orlov
Yes, device seems to be working, but I am worry that there can be different problems. Will do detailed test a bit later. Any way, I think it is a good idea try to fix these errors/warnings. 04.03.2016, 10:37, "Clemens Ladisch" : > Nikita Orlov wrote: >>  [ 3252.958799] usb 1-2: current rate 3046

Re: [Alsa-user] CM6206-LX usb sound card problem

2016-03-03 Thread Clemens Ladisch
Nikita Orlov wrote: > [ 3252.958799] usb 1-2: current rate 30464 is different from the runtime rate > 96000 > I don`t know what is it. Does the device actually work? With different sample rates? > Second error is not correct cval->res. Do the mixer controls actually work? Regards, Clemens -

[Alsa-user] CM6206-LX usb sound card problem

2016-03-03 Thread Nikita Orlov
Hello! I have cheap chinese usb audio card based on chip CM6206-LX dmesg shows me following: [ 3252.826326] usb 1-2: new full-speed USB device number 13 using xhci_hcd [ 3252.956008] usb 1-2: New USB device found, idVendor=0d8c, idProduct=0102 [ 3252.956013] usb 1-2: New USB device strings: Mfr=