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authorGrant Likely <grant.likely@linaro.org>2013-09-15 22:32:39 +0100
committerGrant Likely <grant.likely@linaro.org>2013-10-24 11:43:04 +0100
commit2361613206e66ce59cc0e08efa8d98ec15b84ed1 (patch)
tree5e4f5fc33f715202f71770890dcc09ac09a2d851 /include
parente6d30ab1e7d1281784672c0fc2ffa385cfb7279e (diff)
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 'include')
-rw-r--r--include/linux/of_irq.h5
1 files changed, 1 insertions, 4 deletions
diff --git a/include/linux/of_irq.h b/include/linux/of_irq.h
index 3bbba8d6adc8..c0d6dfe80895 100644
--- a/include/linux/of_irq.h
+++ b/include/linux/of_irq.h
@@ -31,10 +31,7 @@ static inline int of_irq_parse_oldworld(struct device_node *device, int index,
}
#endif /* CONFIG_PPC32 && CONFIG_PPC_PMAC */
-
-extern int of_irq_parse_raw(struct device_node *parent, const __be32 *intspec,
- u32 ointsize, const __be32 *addr,
- struct of_phandle_args *out_irq);
+extern int of_irq_parse_raw(const __be32 *addr, struct of_phandle_args *out_irq);
extern int of_irq_parse_one(struct device_node *device, int index,
struct of_phandle_args *out_irq);
extern unsigned int irq_create_of_mapping(struct of_phandle_args *irq_data);