Hi,
On 16-12-18 23:03, Antonio Ospite wrote:
On Sun, 16 Dec 2018 20:07:30 +0100
Hans de Goede <hdegoede@xxxxxxxxxx> wrote:
Hi,
On 16-12-18 19:54, Stephan Gerhold wrote:
[...]
Unlike many of the other DSDT dumps I've looked at, there is only one
interrupt listed. Full ACPI DSDT table is at [1].
Since there is no IRQ at index 5, platform_get_irq will return -ENXIO.
Couldn't we fall back to index 0 in this case? I would say that if the
seemingly "correct" IRQ at index 5 does not even exist, we still have
a better chance of picking the right one if we try the one at index 0.
Or we could check the number of interrupts that are actually available.
If I'm not mistaken then you already mentioned in another thread
(the "tusb1210 probe of dwc3.0.auto.ulpi fails with EBUSY on 4.19+")
thread that the DSTD of this Andriod only device has several bugs in
there such as wrong GPIOs in some places, etc. and you need to do a
DSDT override anyways to get some things to work, right ?
In that case I believe it would be best to just also patch up this
part of the DSDT in your override and leave the current kernel code
as is.
FWIW that is what I did when playing with a Teclast X98 Air 3G some
years ago, see:
https://git.ao2.it/Teclast-X98-Air-3G_C6J6_custom_DSDT.git/
In my case I just had to fix the ordering:
https://git.ao2.it/Teclast-X98-Air-3G_C6J6_custom_DSDT.git/commitdiff/f718ea7d184cf266d7b5453124139b1c627221e6
It's been a while tho, I just committed and pushed the change now
because I had forgotten back in the day.
The Makefile in the repository contains some pointers about how to build
a DSDT override, what is missing is that you still have to manually
append the original initrd to the file created by the Makefile.
If that is the only issue the DSTD of the Teclast-X98-Air-3G has, then this
seems like a case where a DMI quirk might be a good solution, so that it
will work out of the box for users trying to put Linux on there.
Regards,
Hans
_______________________________________________
Alsa-devel mailing list
Alsa-devel@xxxxxxxxxxxxxxxx
http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
