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Re: [PATCH] i2c: i801: Register optional lis3lv02d i2c device on Dell machines

From Wolfram Sang <wsa@the-dreams.de>
Newsgroups linux.kernel
Subject Re: [PATCH] i2c: i801: Register optional lis3lv02d i2c device on Dell machines
Date 2016-12-28 15:10 +0100
Message-ID <sTn5w-M9-5@gated-at.bofh.it> (permalink)
References <sSZwd-29x-9@gated-at.bofh.it> <sT0sh-2KW-7@gated-at.bofh.it> <sT0sh-2KW-9@gated-at.bofh.it>
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On Tue, Dec 27, 2016 at 02:51:01PM +0100, Pali Rohár wrote:
> On Tuesday 27 December 2016 14:43:49 Wolfram Sang wrote:
> > > Dell platform team told us that some (DMI whitelisted) Dell
> > > Latitude machines have ST microelectronics accelerometer at i2c
> > > address 0x29. That
> > > i2c address is not specified in DMI or ACPI, so runtime detection
> > > without
> > > whitelist which is below is not possible.
> >
> > I'd think this should rather live somewhere in
> > drivers/platform/x86/dell*.c?
>
> i2c_new_device() with lis3lv02d for i801 i2c bus needs to be called
> after initializing i2c-i801 bus driver.
>
> I have no idea how to do it (properly) outside of i2c-i801.c file.

I once used bus_notifiers to achieve something similar. You could check
arch/arm/mach-shmobile/regulator-quirk-rcar-gen2.c to see an action
triggered once a client device got added, but you could act on another
action like BUS_NOTIFY_BOUND_DRIVER. I used exactly that, too, somewhen
somewhere.  Haven't checked if that helps here, too. And since we have 
a
precedence (Fujitsu case), I'll leave it to Jean who is the maintainer
of this driver.

Thanks,

    Wolfram

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[PATCH] i2c: i801: Register optional lis3lv02d i2c device on Dell machines Pali Rohár <pali.rohar@gmail.com> - 2016-12-27 14:00 +0100
  Re: [PATCH] i2c: i801: Register optional lis3lv02d i2c device on  Dell machines Wolfram Sang <wsa@the-dreams.de> - 2016-12-27 15:00 +0100
    Re: [PATCH] i2c: i801: Register optional lis3lv02d i2c device on  Dell machines Pali Rohár <pali.rohar@gmail.com> - 2016-12-27 15:00 +0100
      Re: [PATCH] i2c: i801: Register optional lis3lv02d i2c device on Dell machines Andy Shevchenko <andy.shevchenko@gmail.com> - 2016-12-27 23:20 +0100
        Re: [PATCH] i2c: i801: Register optional lis3lv02d i2c device on Dell machines Valdis.Kletnieks@vt.edu - 2016-12-27 23:50 +0100
          Re: [PATCH] i2c: i801: Register optional lis3lv02d i2c device on Dell machines Andy Shevchenko <andy.shevchenko@gmail.com> - 2016-12-28 09:00 +0100
            Re: [PATCH] i2c: i801: Register optional lis3lv02d i2c device on Dell machines Pali Rohár <pali.rohar@gmail.com> - 2016-12-28 10:10 +0100
              Re: [PATCH] i2c: i801: Register optional lis3lv02d i2c device on  Dell machines Wolfram Sang <wsa@the-dreams.de> - 2016-12-28 15:10 +0100
                Re: [PATCH] i2c: i801: Register optional lis3lv02d i2c device on Dell machines Valdis.Kletnieks@vt.edu - 2016-12-29 05:40 +0100
        Re: [PATCH] i2c: i801: Register optional lis3lv02d i2c device on Dell machines Pali Rohár <pali.rohar@gmail.com> - 2016-12-28 09:40 +0100
      Re: [PATCH] i2c: i801: Register optional lis3lv02d i2c device on  Dell machines Wolfram Sang <wsa@the-dreams.de> - 2016-12-28 15:10 +0100
  Re: [PATCH] i2c: i801: Register optional lis3lv02d i2c device on  Dell machines Michał Kępień <kernel@kempniu.pl> - 2016-12-29 09:30 +0100
    Re: [PATCH] i2c: i801: Register optional lis3lv02d i2c device on Dell machines Pali Rohár <pali.rohar@gmail.com> - 2016-12-29 10:10 +0100
      Re: [PATCH] i2c: i801: Register optional lis3lv02d i2c device on  Dell machines Michał Kępień <kernel@kempniu.pl> - 2016-12-29 14:50 +0100
        Re: [PATCH] i2c: i801: Register optional lis3lv02d i2c device on Dell machines Pali Rohár <pali.rohar@gmail.com> - 2016-12-29 15:20 +0100
          Re: [PATCH] i2c: i801: Register optional lis3lv02d i2c device on  Dell machines Michał Kępień <kernel@kempniu.pl> - 2016-12-29 22:10 +0100
            Re: [PATCH] i2c: i801: Register optional lis3lv02d i2c device on Dell machines Pali Rohár <pali.rohar@gmail.com> - 2016-12-29 22:30 +0100
              Re: [PATCH] i2c: i801: Register optional lis3lv02d i2c device on  Dell machines Benjamin Tissoires <benjamin.tissoires@redhat.com> - 2017-01-03 10:10 +0100
                Re: [PATCH] i2c: i801: Register optional lis3lv02d i2c device on  Dell machines Pali Rohár <pali.rohar@gmail.com> - 2017-01-03 10:30 +0100

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