read/write functions

read/write functions

[Abraham vd Merwe]

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Hi!

Do you need to implement all read/write/copy functions in the map driver
even if your chip driver only uses some of those functions?

For example, let's say I only use map->read32() and map->write32(), do I
still need map->read16(), etc in my map driver or can I just leave them
uninitialized (NULL)?

-- 

Regards
 Abraham

My cup hath runneth'd over with love.

__________________________________________________________
 Abraham vd Merwe - 2d3D, Inc.

 Device Driver Development, Outsourcing, Embedded Systems

  Cell: +27 82 565 4451         Snailmail:
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Re: read/write functions

[David Woodhouse]

abraham@2d3d.co.za said:
>  Do you need to implement all read/write/copy functions in the map
> driver even if your chip driver only uses some of those functions?

> For example, let's say I only use map->read32() and map->write32(), do
> I still need map->read16(), etc in my map driver or can I just leave
> them uninitialized (NULL)? 

You can leave them NULL. If any chip driver calls them it's buggy, so it'll 
oops.

--
dwmw2