On Fri, 2006-12-08 at 00:28 +0800, Bjorn Helgaas wrote: > On Thursday 07 December 2006 05:56, Zhang Rui wrote: > > 1. ACPI driver model. > > ACPI driver are made to follow Linux driver model. > > The main work is to convert the registration interfaces,so that > > ACPI devices are registered with the global device tree. > > Note the new .uevent method mark ACPI drivers by PNPID > > instead of by name. Udev script needs to look for "HWID = " > > or "COMPTID = " to load the right ACPI driver. > > I generally like the direction this is headed. > > But I wonder whether it's right to expose the distinction between > PNP devices and ACPI devices to userspace. > > Assume you had a box where you can run either PNPBIOS firmware > or ACPI firmware. Since the box has exactly the same hardware > in either case, it would be nice if everything in /sys and udev > stayed the same. > > Is it possible to extend the PNP model to include ACPI, rather > than introducing a new ACPI model alongside the PNP model? Don't think it's easy. ACPI driver uses some acpi helpers and handle some ACPI specific event like notification/gpe ...
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