Re: [PATCH] i2c: i801: Register optional lis3lv02d i2c device on Dell machines
From: Wolfram Sang
Date: Wed Dec 28 2016 - 09:03:22 EST
On Tue, Dec 27, 2016 at 02:51:01PM +0100, Pali RohÃr 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
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
precedence (Fujitsu case), I'll leave it to Jean who is the maintainer
of this driver.