diff options
| author | Andres Salomon <dilinger@queued.net> | 2010-10-10 21:35:05 -0600 |
|---|---|---|
| committer | Grant Likely <grant.likely@secretlab.ca> | 2010-10-12 21:58:27 -0600 |
| commit | 52f6537cb2f0b461a9ce3457c01a6cfa2ae0bb22 (patch) | |
| tree | db720ce58637b3c70277f9b0fbe5082fcf6f9b94 /drivers/of/irq.c | |
| parent | e2f2a93b6384cfe0face0be595bfbda1475d864b (diff) | |
of/irq: remove references to NO_IRQ in drivers/of/platform.c
Instead of referencing NO_IRQ in platform.c, define some helper functions
in irq.c to call instead from platform.c. Keep NO_IRQ usage local to
irq.c, and define NO_IRQ if not defined in headers.
Signed-off-by: Andres Salomon <dilinger@queued.net>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Diffstat (limited to 'drivers/of/irq.c')
| -rw-r--r-- | drivers/of/irq.c | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/drivers/of/irq.c b/drivers/of/irq.c index 6e595e5a397..75b0d3cb767 100644 --- a/drivers/of/irq.c +++ b/drivers/of/irq.c @@ -24,6 +24,11 @@ #include <linux/of_irq.h> #include <linux/string.h> +/* For archs that don't support NO_IRQ (such as x86), provide a dummy value */ +#ifndef NO_IRQ +#define NO_IRQ 0 +#endif + /** * irq_of_parse_and_map - Parse and map an interrupt into linux virq space * @device: Device node of the device whose interrupt is to be mapped @@ -347,3 +352,37 @@ int of_irq_to_resource(struct device_node *dev, int index, struct resource *r) return irq; } EXPORT_SYMBOL_GPL(of_irq_to_resource); + +/** + * of_irq_count - Count the number of IRQs a node uses + * @dev: pointer to device tree node + */ +int of_irq_count(struct device_node *dev) +{ + int nr = 0; + + while (of_irq_to_resource(dev, nr, NULL) != NO_IRQ) + nr++; + + return nr; +} + +/** + * of_irq_to_resource_table - Fill in resource table with node's IRQ info + * @dev: pointer to device tree node + * @res: array of resources to fill in + * @nr_irqs: the number of IRQs (and upper bound for num of @res elements) + * + * Returns the size of the filled in table (up to @nr_irqs). + */ +int of_irq_to_resource_table(struct device_node *dev, struct resource *res, + int nr_irqs) +{ + int i; + + for (i = 0; i < nr_irqs; i++, res++) + if (of_irq_to_resource(dev, i, res) == NO_IRQ) + break; + + return i; +} |