On Mon, Apr 11, 2022 at 6:49 PM Greg KH <greg@xxxxxxxxx> wrote:
On Mon, Apr 11, 2022 at 03:32:23PM +0100, Peter Maydell wrote:
> On Mon, 11 Apr 2022 at 15:22, Chan Kim <ckim@xxxxxxxxxx> wrote:
> >
> >
> > > > > What bus type is your driver written for?
> > > > >
> > > > That sounds very logical. In my case I added it to system bus.
> > >
> > > What exactly do you mean by "system bus"?
> > >
> > I meant 'sysbus' in qemu code that I showed in the qemu code.
> > And I think it's the CPU bus.
>
> The 'sysbus' is just QEMU's abstraction for "devices mapped into
> memory at a fixed physical address", ie simple MMIO devices that
> aren't on a complex bus like PCI or USB or SPI.
So, a platform_device in Linux kernel terms, right?
Hello, yes thats correct because it uses platform_device.h
but *dev in platform_device is not called this code, already defined in a device struct header file.
this *dev and *resource will be able to return for resource IRQ and interrupt.
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