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

Pali Rohár
2016-12-28T08:38:48Z

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On Tuesday 27 December 2016 23:15:30 Andy Shevchenko wrote:
> On Tue, Dec 27, 2016 at 3:51 PM, Pali Rohár <pali.rohar@gmail.com>
> 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 doubt we need a single line of code for this. See [1] and perhaps
> create an EFI variable with necessary upgrade device node.

Sorry, but EFI variable is not accessible from BIOS booted kernel. So
such thing will not work.

--
Pali Rohár
pali.rohar@gmail.com

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