Hi Pierre, how are you? >> I also ported a machine driver code from a kernel Lenovo made available >> for a similar hardware (Lenovo yoga 2 1050 - uses the same baytrail >> Z3745 and wolfson wm5102 audio) [4] > > > There are quite a few references in the machine driver to concepts related > to Clovertrail+ and early versions of Baytrail. I am fairly convinced the > mentions of 'BYT_COMMS_BT' or 'modem mixing' are no longer supported with > the DPCM platform driver/firmware you used. Yes, the code I ported was originally wrote for kernel 3.10.x targeted for Android In any case, I didn't enable this option on our kernel config > > To enable this codec it would be simpler to start with a newer machine > driver derived from the bytcr_rt5640 one, with just a basic SSP0-aif1 link > for starters (+ MCLK). Thanks for the tip. I can try it ( create a machine driver derived from bytcr_rt5640 ). Will just wait for Charles help on analyzing CODEC output I provided. [1] If he says this part seems ok, I will work on machine driver I'm not sure this hardware uses SSP0 or SSP2, so I'm testing with both firmwares. Is there any method I can confirm it? (querying an ACPI entry listed on DSDT maybe?) > Better yet, do this work with a MinnowBoard and an > WM5102 eval board and test all this with more control on how the hardware is > setup. This is probably the best approach (minnowboard + WM5102 eval board). But unfortunatelly my skills are limited... > If you stick to working directly on the Lenovo device, make sure you use all > the DSP controls set in the UCM files used for baytrail/baytrail-CR (see > github.com/plbossart/UCM). In fact, currently I don't have this device. Some volunteers from Android-x86 google group are testing changes made on their hardware and provide the info I ask for (logcat / dmesg / mixer output, etc) Thanks Pstglia [1] - https://drive.google.com/file/d/0BxO6THtB865fS2NxUkdOa18zUlE/view?usp=sharing _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
