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| author | Grant Likely <grant.likely@linaro.org> | 2013-09-19 16:47:37 -0500 |
|---|---|---|
| committer | Grant Likely <grant.likely@linaro.org> | 2013-10-28 16:48:14 -0700 |
| commit | 79d9701559a9f3e9b2021fbd292f5e70ad75f686 (patch) | |
| tree | bbbcc05e19c73ffe9f6a5b71c8c45c5e051c2747 /drivers/of/irq.c | |
| parent | f27446c3ad5b6d3b5b28ec0176e23d3ceca595d8 (diff) | |
| download | linux-79d9701559a9f3e9b2021fbd292f5e70ad75f686.tar.gz linux-79d9701559a9f3e9b2021fbd292f5e70ad75f686.tar.bz2 linux-79d9701559a9f3e9b2021fbd292f5e70ad75f686.zip | |
of/irq: create interrupts-extended property
The standard interrupts property in device tree can only handle
interrupts coming from a single interrupt parent. If a device is wired
to multiple interrupt controllers, then it needs to be attached to a
node with an interrupt-map property to demux the interrupt specifiers
which is confusing. It would be a lot easier if there was a form of the
interrupts property that allows for a separate interrupt phandle for
each interrupt specifier.
This patch does exactly that by creating a new interrupts-extended
property which reuses the phandle+arguments pattern used by GPIOs and
other core bindings.
Signed-off-by: Grant Likely <grant.likely@linaro.org>
Acked-by: Tony Lindgren <tony@atomide.com>
Acked-by: Kumar Gala <galak@codeaurora.org>
[grant.likely: removed versatile platform hunks into separate patch]
Cc: Rob Herring <rob.herring@calxeda.com>
Diffstat (limited to 'drivers/of/irq.c')
| -rw-r--r-- | drivers/of/irq.c | 16 |
1 files changed, 11 insertions, 5 deletions
diff --git a/drivers/of/irq.c b/drivers/of/irq.c index 7c4ff122785f..8cc62b4a7988 100644 --- a/drivers/of/irq.c +++ b/drivers/of/irq.c @@ -292,17 +292,23 @@ int of_irq_parse_one(struct device_node *device, int index, struct of_phandle_ar if (of_irq_workarounds & OF_IMAP_OLDWORLD_MAC) return of_irq_parse_oldworld(device, index, out_irq); + /* Get the reg property (if any) */ + addr = of_get_property(device, "reg", NULL); + /* Get the interrupts property */ intspec = of_get_property(device, "interrupts", &intlen); - if (intspec == NULL) - return -EINVAL; + if (intspec == NULL) { + /* Try the new-style interrupts-extended */ + res = of_parse_phandle_with_args(device, "interrupts-extended", + "#interrupt-cells", index, out_irq); + if (res) + return -EINVAL; + return of_irq_parse_raw(addr, out_irq); + } intlen /= sizeof(*intspec); pr_debug(" intspec=%d intlen=%d\n", be32_to_cpup(intspec), intlen); - /* Get the reg property (if any) */ - addr = of_get_property(device, "reg", NULL); - /* Look for the interrupt parent. */ p = of_irq_find_parent(device); if (p == NULL) |