[sane-devel] Brother DS-600 has a new chip & new HW ID not supported by genesys backend

[Stef]

On 01/11/2012 03:10, Alex Howland wrote:
> Hi guys,
>
> Been trying to get a Brother DS-600 working for the better part of 
> today, because unlike the DS-600 supported by SANE, I was getting a 
> device ID of 0x204e (instead of sane's documented 0x2038). The DS-600 
> was formerly Pentax, which is what a lot of the documentation states 
> even though the second designation 0x047f9 / 0x2038 is a Brother (they 
> bought Pentax). Anyway, turns out Brother has updated the chipset to a 
> GL125 from the previous GL841 so current versions of this scanner are 
> not supported. At least as of .23, I haven't checked git.
>
> Brother DSmobile 600 (model: DS-600), usb ids 0x04f9 / 0x204e
> Shows up as chipset GL848+, but I checked the board inside and it's 
> definitely GL125.
>
> I poked my nose into genesys_devices.c and forced genesys settings for 
> GL841 (the old one for DS-600) and GL847 (used recently in Canons) but 
> was met only with an I/O error on both occasions, so I am assuming 
> this is a chip that actually needs to be implemented separately and 
> doesn't use the same api.
>
> I guess I just thought someone should know.
>
> Please let me know if I can help, or if there's another chip similar 
> to the GL125 I can try to force (maybe GL124?)
>
>
     Hello,

     there isn't support for GL125 based scanner in current genesys 
backend. What you have to do is to clone the GL124 code into a new one, 
adapting for the register differences. Since there is no sheet-fed 
support for the GL124, you'll have to add it, using the GL841 as a guide 
for the logic.

Regards,
     Stef