Audio driver template

John Baldwin jhb at
Tue Jul 10 21:22:16 UTC 2007

On Monday 09 July 2007 10:09:21 pm John-Mark Gurney wrote:
> Christopher Davis wrote this message on Mon, Jul 09, 2007 at 11:47 -0700:
> >
> > 
> > Thought I would take a look at the audio driver template as
> > part of my task to modernize drivers, soc2007. I would simplify
> > the read and write functions to avoid using the bus tag and
> > handle, but I'm not sure what else to do to bring it up to date.
> > 
> > How else can it be improved?
> Use bus_alloc_resources instead of using bus_alloc_resource...
> Maybe use pci_enable_busmaster and friends instead of using
> pci_write_config...  (In the future for suspend/resume, I would hope
> our pci layer would save the state, which it might not if you write
> directly to the config registers.)

It already saves the state, and it does so by reading all the regs during 
suspend, so that backdoor writes are saved and restored.

John Baldwin

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