Re: Researching An Experimental Touchscreen Driver

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On Sat, Nov 27, 2010 at 11:12:51PM -0500, Jeremy Moles wrote:
> 
> WHOA! Now we're cooking! My probe succeeds and now my
> event/input_mapping/input_mapped functions all get called!
> 
> When driver developers are writing HID glue drivers like this, how is it
> you generally determine the contents of your drv_data structure? Via
> hardware specs or is there some way to poke at the device via USB and
> have it tell you? Perhaps this question is a bit TOO out of line, as I'm
> sure that information is available in the standard USB HID
> information...
> 

If you are talking about data structures that are accessed via
hig_get_drvdata() and hid_set_drvdata() then it is entirely up to driver
writer to define them. Basically whatever state you need to be able to
handle the device.

-- 
Dmitry
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