[sane-devel] HP ADF Support for chipset RT58822

Alejandro Imass aimass at p2ee.org
Sat Aug 21 13:00:13 UTC 2010

On Fri, Aug 20, 2010 at 9:36 PM, JKD <jkdsoft at gmail.com> wrote:
> Hello,
> 2010/8/20 Alejandro Imass <aimass at p2ee.org>
> hp3900 focuses on RTS8822 and derivates. I don't know if RT58822 is just
> a mistake or another chipset.

With the hp3900 enabled scanimage -L says it's RT58822 but when I try
scanimage -h -d hp3900 it doesn't have the usb hw code in the list so
the driver croaks. I tried adding it by brute force to the code (just
adding the hw code in every place I could find the other ones) but I
couldn't get it to even get the scanner options. I didn't spend much
time with it either; thought it was better to ask before I fry my
client's scanners.

>  All scanners I've tested using RTS882x don't provide ADF functionality so I
> didn't
> recognize any related register and hp3900 doesn't support it.

Hmmm, so hp3900 doesn't support ADF.

> hp3900 backend has extended options to test device's behavior using known
> settings from recognized chipsets but this chipset is a bit complex needing
> many data to be programmed (such as lamp settings, sensor type, sensor
> clocks,
> motor steps depending on supported resolutions and so on). The idea is
> analyze
> windows' driver to extract all necessary data that may be different in each
> scanner
> model. That may take some time.

Ok, well let me check to see if I can first determine the actual
chipset, but I won't see the scanners again till tuesday.


> Jonathan Bravo Lopez
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