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Linux - Embedded & Single-board computer This forum is for the discussion of Linux on both embedded devices and single-board computers (such as the Raspberry Pi, BeagleBoard and PandaBoard). Discussions involving Arduino, plug computers and other micro-controller like devices are also welcome.

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Old 11-13-2010, 07:01 AM   #1
pavius
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Registered: Nov 2010
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Exar 16L784 quad serial - do I need to rewrite or can I reuse?


I have an Exar 16L784 mapped to memory (directly, via a GPCM) on a PPC8xx. It seems that all the drivers related to similar devices assume communication over PCI. Do i need to implement my own driver or can I somehow use them?

The 16L784 exports 4 blocks of 16550 compatible registers, but i am not sure about how compatible the interrupt logic is. In a perfect world i would somehow add a record with a compatible device to my DTS file, but i am not sure how that would go.

I started writing my own driver (loaded, remapped, initialized successfully) but think that i'm barking up the wrong tree and that i should be able to reuse existing drivers.

Any tips/pointers appreciated.
 
  


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