diff options
author | Grant Likely <grant.likely@linaro.org> | 2013-09-15 21:32:39 (GMT) |
---|---|---|
committer | Grant Likely <grant.likely@linaro.org> | 2013-10-24 10:43:04 (GMT) |
commit | 2361613206e66ce59cc0e08efa8d98ec15b84ed1 (patch) | |
tree | 5e4f5fc33f715202f71770890dcc09ac09a2d851 /drivers/of/of_pci_irq.c | |
parent | e6d30ab1e7d1281784672c0fc2ffa385cfb7279e (diff) | |
download | linux-2361613206e66ce59cc0e08efa8d98ec15b84ed1.tar.xz |
of/irq: Refactor interrupt-map parsing
All the users of of_irq_parse_raw pass in a raw interrupt specifier from
the device tree and expect it to be returned (possibly modified) in an
of_phandle_args structure. However, the primary function of
of_irq_parse_raw() is to check for translations due to the presence of
one or more interrupt-map properties. The actual placing of the data
into an of_phandle_args structure is trivial. If it is refactored to
accept an of_phandle_args structure directly, then it becomes possible
to consume of_phandle_args from other sources. This is important for an
upcoming patch that allows a device to be connected to more than one
interrupt parent. It also simplifies the code a bit.
The biggest complication with this patch is that the old version works
on the interrupt specifiers in __be32 form, but the of_phandle_args
structure is intended to carry it in the cpu-native version. A bit of
churn was required to make this work. In the end it results in tighter
code, so the churn is worth it.
Signed-off-by: Grant Likely <grant.likely@linaro.org>
Acked-by: Tony Lindgren <tony@atomide.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'drivers/of/of_pci_irq.c')
-rw-r--r-- | drivers/of/of_pci_irq.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/drivers/of/of_pci_irq.c b/drivers/of/of_pci_irq.c index ee3293d..303afeb 100644 --- a/drivers/of/of_pci_irq.c +++ b/drivers/of/of_pci_irq.c @@ -85,9 +85,12 @@ int of_irq_parse_pci(const struct pci_dev *pdev, struct of_phandle_args *out_irq pdev = ppdev; } + out_irq->np = ppnode; + out_irq->args_count = 1; + out_irq->args[0] = lspec; lspec_be = cpu_to_be32(lspec); laddr[0] = cpu_to_be32((pdev->bus->number << 16) | (pdev->devfn << 8)); - laddr[1] = laddr[2] = cpu_to_be32(0); - return of_irq_parse_raw(ppnode, &lspec_be, 1, laddr, out_irq); + laddr[1] = laddr[2] = cpu_to_be32(0); + return of_irq_parse_raw(laddr, out_irq); } EXPORT_SYMBOL_GPL(of_irq_parse_pci); |