On 02/01/2016 08:59 AM, Pierre-Louis Bossart wrote:
On 01/31/2016 07:51 AM, Tobias Mädel wrote:
Hello,
we're currently trying to get the new bytcr_rt5651 driver to run on a TrekStor SurfTab wintron 7.0 (x86 tablet).
Unlike the previous driver for the rt5640 chipset, the new bytcr_rt5651 driver actually detects the card out-of-the-box.
Good to know.
This is the dmesg output on the device: bytcr_rt5651: snd-soc-dummy-dai <-> media-cpu-dai mapping ok bytcr_rt5651: snd-soc-dummy-dai <-> deepbuffer-cpu-dai mapping ok bytcr_rt5651: Invalid direction for compress P 0, C 0 bytcr_rt5651: ASoC: can't create compress Compress bytcr_rt5651: ASoC: failed to instantiate card -22 bytcr_rt5651: devm_snd_soc_register_card failed -22 bytcr_rt5651: probe of bytcr_rt5651 failed with error -22
So -- apparently it is successfully initializing 2 of the DAIs, but it can't find the Compress-DAI. My first guess would just be to try and disable the Compress DAI in the code just for debugging, but I'm sure that there's a better way.
I'm running a bleeding edge kernel build from the main linux git tree, build from yesterday's github.com/torvalds/linux.git repo.
Does anyone have any ideas on how to get alsa to detect the card properly?
Here's the complete dmesg output: https://gist.github.com/Manawyrm/70d90e95e9c578a7fb26
This is weird. I checked the DSDT tables and couldn't see anything blatantly wrong. If there was a problem with the compress DAI it would show on other platforms as well. It could also be a configuration issue with bad controls, I put my UCM configuration on github plbosssart/UCM/, you may want to look into this as well.
The same issues happens with an Asus t100 with 4.5-rc2, I get the same message of invalid direction so it's not a codec issue but a regression on all Atom platforms. The code for this direction check was added by commit " ASoC: compress: Fix compress device direction check" a1068045883ed4a18363a4ebad0c3d55e473b716pe by Vinod Koul (cc:ed), somehow the logic must be wrong or missing something.