Liam Girdwood <liam.r.girdwood <at> linux.intel.com> writes:
On Tue, 2014-02-18 at 20:59 -0800, Adam Williamson wrote:
On Mon, 2014-02-17 at 16:48 -0800, Adam Williamson wrote:
On Mon, 2014-02-17 at 16:40 -0800, Adam Williamson wrote:
On Mon, 2014-02-17 at 09:54 +0000, bobby wrote:
This is a pci device for which the driver is not yet available. I went through the intel atom processor manual and found that it
has 3 I2S
ports, has its own DMA. The Soc is interfaced with LPE audio core via internal
PCI bus.
Did you guys hear anything from intel about the driver support.
Any inputs
would be of great help please
Jan Michael Brummer at Intel pointed this out to me recently:
https://kernel.googlesource.com/pub/scm/linux/kernel/git/lrg/asoc/+/intel/h aswell-audio-dsp%5E
looks like it's being worked on.
Heh, that's actually just a mirror of the git ASoC branch. All those patches went through this very list last week. I don't know precisely how the upstreaming process goes for this stuff, but I'm guessing
it'll
wind up in 3.14 or 3.15.
(I may try building the patches into my Fedlet kernel builds and see
if
that gets anywhere...)
FWIW, I tried building a 3.14rc3 kernel with these patches applied and the drivers enabled as modules. On boot on a Dell Venue 8 Pro, all the relevant modules are loaded, but there's no ALSA device, and no obviously useful errors in any logs, or useful output from alsa-
info.sh.
Is it expected that the driver doesn't actually work yet? Per the
recent
commits, do I need some kind of firmware? Any debugging that would be useful?
Sorry, we're not finished with the upstreaming yet. The current patches upstream are for the low level parts of the Intel DSP drivers. Jarkko and I still have to upstream the upper layers of the drivers (probably today) and you will also need firmware.
Once upstream the drivers will support Valley View, Baytrail, Haswell and Broadwell. The firmware for Baytrail and Valleyview will be available shortly too.
Liam
Thanks Liam and Jarkko saw your patches related to the Intel SST Audio Platform drivers, I hope the upstreaming process is complete for this module. Please let us know when the firmware is available.
I have few question here, the i2s mode should be enabled in the platform drivers right.
In the Bayley Bay bios I saw that the LPE audio could be enumerated via PCI or ACPI, the patches I saw mostly cover the ACPI mode. Will the PCI mode be covered in the patches.
Thanks in Advance Bobby