Re: serial.c - start looking from 0x220 iomem_base ??

[Robert Woerle <robert@paceblade.com>]

Richard B. Johnson schrieb:

>On Fri, 13 Feb 2004, Robert Woerle wrote:
>
>  
>
>>Hi
>>
>>I am having here a device  (Tablet PC ) sample with a serial resistive
>>touchscreen  .
>>Under Windows it comes up as COM1 at IO-Base 0x220 -0x227 IRQ 4 .
>>Now it seems that in linux the serial driver doesnt look for so "low"
>>I/O-Base `s .
>>
>>By hacking around by hardcoding the 0x220 somehwere in serial.c i get it
>>to detect a standard 16550 , but
>>unfortunately it then assumes that all ttySX have this base .
>>This is because of my hardcoded hack and the driver not looking for all
>>the rest mem bases.
>>
>>So the quesion is :
>>Where do i tell serial.o  to start lower ( at 0x220 ) to look for
>>controllers .. .??
>>
>>
>>
>>Pls also CC me directly since i am only monitoring this list .
>>    
>>
>
>There are 4 de facto standard serial ports:
>
>COM1	0x3F8	IRQ4
>COM2	0x2F8	IRQ3
>COM3	0x3E8	IRQ4
>COM4	0x2E8	IRQ3
>
>If you have a port at 0x220, it is above the game-port area,
>but not where the kernel should "look for" serial devices.
>Therefore, you don't tell the kernel to, as you state, start
>lower. Instead, you tell the kernel where they are by putting
>them in the pnp_devices[] table.
>
>
>  
>
I tryed that now and added a device  like
ISAPNP_VENDOR('P', 'N', 'P'), ISAPNP_DEVICE(0x0220),

but nothing happens ... it leaves the function saying
<7>"Leaving  probe_serial_pci() (probe finished)

What can i do ?