[Bug 92386] New: Integrated sensor on nv43 doesn't work (wrong vbios parsing?) - bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ

From: bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ@public.gmane.org
To: nouveau-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org
Subject: [Bug 92386] New: Integrated sensor on nv43 doesn't work (wrong vbios parsing?)
Date: Sat, 10 Oct 2015 14:48:29 +0000	[thread overview]
Message-ID: <bug-92386-8800@http.bugs.freedesktop.org/> (raw)

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https://bugs.freedesktop.org/show_bug.cgi?id=92386

            Bug ID: 92386
           Summary: Integrated sensor on nv43 doesn't work (wrong vbios
                    parsing?)
           Product: xorg
           Version: git
          Hardware: x86 (IA32)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Driver/nouveau
          Assignee: nouveau-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org
          Reporter: randrik-JGs/UdohzUI@public.gmane.org
        QA Contact: xorg-team-go0+a7rfsptAfugRpC6u6w@public.gmane.org

Created attachment 118799
  --> https://bugs.freedesktop.org/attachment.cgi?id=118799&action=edit
hack for recognizing sensor on nv43

Hello, this is me again with my useful nv43.

As far as I can see nvidia binary driver can use integrated sensor on my card,
while nouveau can't. After some digging I found problem - nouveau can't find
some calibration coefficients in vbios. May be they missed completely, or bios
slightly misparsed. I'll attach again my vbios, and patch I made after looking
at nvclock sources [1]. Patch allow sensor to work, and reported temperature
roughly correspond to what I saw with binary driver (looking at raw output I
see nouveau still hotter than nvidia, but I can ignore this for now).

Not sure if such hack (?) should go into nouveau, or I (someone) better to find
if values really missed from vbios first.

Command for getting raw sensor value:
envytools/nva/nvapeek 0x15b4

[1] - http://www.linuxhardware.org/nvclock/

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