Messages in this thread | | | Subject | Re: [PATCH] i2c: i801: Register optional lis3lv02d i2c device on Dell machines | Date | Wed, 28 Dec 2016 15:02:52 +0100 | From | Wolfram Sang <> |
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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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