[PATCH 11/11] RFC: ARM: get PCI device IRQs from device tree

[Linus Walleij]

On Fri, Apr 12, 2013 at 10:22 AM, Andrew Murray <andrew.murray at arm.com> wrote:

Thanks for your prompt reply Andrew!

> I don't think any of these solutions are ideal - perhaps pcibios_init_hw needs
> to be changed... there are patches around which involve passing additional
> private data in sys_data/hw_pci see [1] and [4] if this additional data
> contains struct device or struct device_node then perhaps they can be plumbed
> into the default call to pci_scan_root_bus in bios32? If every ARM DT host
> bridge driver needs to implement their own scan function then something isn't
> quite right.

So yesterday I came up with the scheme of augmenting the
pci_common_init() call in bios32.c to take an additional struct device *parent
argument, then pass that to the pci_create_root_bus() call, as it is hard-coded
to NULL in bios32.c today. Current users were patched to pass NULL
as parent.

When you assign that from a struct device* instatiated from the device tree the
node gets properly resolved and the mappings start to work.

However I might have been too sleepy last night and misfired the patch since
it seems it has not yet made it onto the mailing list ... will resend.

Yours,
Linus Walleij