On Thu, Jun 4, 2009 at 8:26 PM, Hans Verkuil<hverkuil@xxxxxxxxx> wrote:
>
>> Hello everyone,
>>
>> In subdev framework, we already have "init" API but not recommended
>> for new drivers to use this. But I'm so frustrated for the absence of
>> that kind of API.
>
> What I want to do is that you can pass such data through the board_info.
> Patch for that have been posted but I still haven't had the chance to sit
> down and review them :-(
Hmm... I tried to find the patch you mentioned, but still not popping
up. Can you give me some hint?
>
> This method is the common method for existing i2c drivers and should (I
> think) be used for all new i2c drivers.
>
>> I'm working on camera driver which needs to programme registors
>> through I2C bus and just stuck figuring out how to make it programmed
>> in device open (in this case, camera interface should be opened)
>> procedure.
>
> You're not trying to pass register/value pairs to the i2c driver, are you?
> You should tell the i2c driver what you want and let the i2c driver do the
> register programming for you. Only the i2c driver should know about the
> registers of the i2c device.
Actually I'm trying to do a very ordinary I2C programming job through
i2c_transfer() like any of sensor device. There are so many registers
to be programmed..like hundreds? I suppose..One single register is
consisted of 2bytes for address and 2bytes for values or multiple
bytes for some cases.
>
>> So, if I have no chance to use "init" API with implementing
>> my driver, which API should be used? Actually without "init" API, I
>> should make my driver to programme initializing registors in s_fmt or
>> s_parm sort of APIs.
>
> Use init as long as the new functions passing the board_info to the i2c
> core are not yet available. You can convert once we have the new API in
> place.
>
OK, I'll try to use if I can't find the patch using board_info you
have mentioned.
>> Any other alternative API is served in subdev framework? Please let me
>> know if there is something I missed.
>
> It's work in progress and I'm the bottleneck here :-(
>
I really wanna give you a hand! If I could..
Cheers,
Nate
>> BTW, subdev framework is really
>> cool. Totally arranged and easy to use.
>
> Thanks!
>
> Regards,
>
> Hans
>
>> Cheers,
>>
>> Nate
>>
>>
>> --
>> =
>> DongSoo, Nathaniel Kim
>> Engineer
>> Mobile S/W Platform Lab.
>> Digital Media & Communications R&D Centre
>> Samsung Electronics CO., LTD.
>> e-mail : dongsoo.kim@xxxxxxxxx
>> dongsoo45.kim@xxxxxxxxxxx
>>
>
>
> --
> Hans Verkuil - video4linux developer - sponsored by TANDBERG
>
>
--
=
DongSoo, Nathaniel Kim
Engineer
Mobile S/W Platform Lab.
Digital Media & Communications R&D Centre
Samsung Electronics CO., LTD.
e-mail : dongsoo.kim@xxxxxxxxx
dongsoo45.kim@xxxxxxxxxxx
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