Messages in this thread | | | Date | Mon, 25 Jul 2016 13:05:47 +0200 | From | Antonio Ospite <> | Subject | Re: [PATCH] HID: sony: disable descriptor fixup for FutureMax Dance Mat |
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On Mon, 25 Jul 2016 11:14:04 +0200 Benjamin Tissoires <benjamin.tissoires@redhat.com> wrote:
> On Jul 21 2016 or thereabouts, Antonio Ospite wrote: [...] > > It would be interesting to understand why some (supposedly) compatible > > devices break, maybe they rely on the fact that the PS3 would use the > > original report? > > [just speculating] > I would be *really* surprised if the Sony software were to overwrite the > report descriptor of their own sony controllers. My guess is that their > HID stack or their Playstation driver is compatible with the original > report descriptors and so they can handle the differences between > original and weirdo controllers. >
That's basically what I was thinking too, in my last sentence I meant to write report _descriptor_ :)
Mikko, if you have some time, could you post the original report descriptor for your device?
$ hexdump /sys/bus/hid/devices/XXXX\:YYYY\:ZZZZ.0001/report_descriptor
or
$ hidrd-convert -i natv -o code /sys/bus/hid/devices/XXXX\:YYYY\:ZZZZ.0001/report_descriptor
You can also find out the length of the raw output report with trial and error, start with a line like this:
$ sudo hexdump -v -e '49/1 "%02x " "\n"' /dev/hidraw0
and increase/decrease the value (49 works with original controllers) until you see a regular pattern when comparing lines.
Anyways this is just for curiosity, we are not going to spend too much time on that... or are we? :)
Thanks, Antonio
-- Antonio Ospite http://ao2.it
A: Because it messes up the order in which people normally read text. See http://en.wikipedia.org/wiki/Posting_style Q: Why is top-posting such a bad thing?
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