Re: ioctl for i2c devices

[Rohan Akela <rohanakela%gmail.com@localhost>]

Thanks for the clarification.

As far I2C device driver, my question was really "can i write a I2C
driver for a specific device with ioctl support and submit it for
review ?" I don't see any existing I2C device driver with ioctl
support and hence the question.

On Tue, Feb 5, 2013 at 1:59 PM, Paul Goyette <paul%whooppee.com@localhost> 
wrote:
> The existing ioctl mechanism is for access to the i2c bus itself.  For an
> example of how to use the existing i2c ioctl interface, please take a look
> at $SRCDIR/usr.sbin/i2cscan/i2cscan.c
>
> Note that this is really different from providing an ioctl for accessing
> your specific i2c device.  The existing mechanism accesses the i2c bus
> itself.  Your device driver would need to have its own routines.
>
> Please feel free to submit your completed driver to us for review.
>
>
>
> On Tue, 5 Feb 2013, Rohan Akela wrote:
>
>> Hello
>>
>> I am in the process of implementing driver for I2C device and need to
>> read/write to device from user space. I was thinking of using usual
>> ioctl based mechanism to do it.I don't see any issues in implementing
>> ioctls for I2C device. But this email thread
>> http://osdir.com/ml/os.netbsd.devel.embedded/2006-05/msg00008.html
>> seems to suggest that I2c drivers in NetBSD should not use ioctl. I am
>> not sure if the observations in thread are still relevant.
>>
>> What is the issue in implementing ioctl for I2C device ?
>>
>> If I submit I2C driver to NetBSD,will it accepted or rejected ?
>>
>> Thanks
>>
>> !DSPAM:51117ee3145151234514069!
>>
>>
>
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