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

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Message-Id: <201612271451.01505@pali>
Date:   Tue, 27 Dec 2016 14:51:01 +0100
From:   Pali Rohár <pali.rohar@...il.com>
To:     Wolfram Sang <wsa@...-dreams.de>
Cc:     Jean Delvare <jdelvare@...e.com>,
        Steven Honeyman <stevenhoneyman@...il.com>,
        valdis.kletnieks@...edu,
        Jochen Eisinger <jochen@...guin-breeder.org>,
        Gabriele Mazzotta <gabriele.mzt@...il.com>,
        Andy Lutomirski <luto@...nel.org>, mario_limonciello@...l.com,
        Alex Hung <alex.hung@...onical.com>,
        MichaÅ‚ KÄ™pieÅ„ 
        <kernel@...pniu.pl>, Takashi Iwai <tiwai@...e.de>,
        linux-i2c@...r.kernel.org, linux-kernel@...r.kernel.org,
        platform-driver-x86@...r.kernel.org
Subject: Re: [PATCH] i2c: i801: Register optional lis3lv02d i2c device on  Dell machines

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.

Same thing is done for Fujitsu machines, see function 
i801_probe_optional_slaves() in i2c-i801.c file. So I did similar 
approach for Dell machines.

-- 
Pali Rohár
pali.rohar@...il.com

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