diff options
| author | Bjorn Helgaas <bjorn.helgaas@hp.com> | 2008-04-28 16:34:14 -0600 |
|---|---|---|
| committer | Len Brown <len.brown@intel.com> | 2008-04-29 03:22:23 -0400 |
| commit | b90eca0a61ebd010036242e29610bc6a909e3f19 (patch) | |
| tree | 7f92620157786997dc0123b75b8c38b61e8dd2be | |
| parent | d948a8daa059cf5b3e7f002e7b92acf00fc70c49 (diff) | |
PNP: add pnp_get_resource() interface
This adds a pnp_get_resource() that works the same way as
platform_get_resource(). This will enable us to consolidate
many pnp_resource_table references in one place, which will
make it easier to make the table dynamic.
Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Acked-By: Rene Herman <rene.herman@gmail.com>
Signed-off-by: Len Brown <len.brown@intel.com>
| -rw-r--r-- | drivers/pnp/resource.c | 27 | ||||
| -rw-r--r-- | include/linux/pnp.h | 1 |
2 files changed, 28 insertions, 0 deletions
diff --git a/drivers/pnp/resource.c b/drivers/pnp/resource.c index eee6d8eddcb..ef8835ec577 100644 --- a/drivers/pnp/resource.c +++ b/drivers/pnp/resource.c @@ -487,6 +487,33 @@ int pnp_check_dma(struct pnp_dev *dev, int idx) #endif } +struct resource *pnp_get_resource(struct pnp_dev *dev, + unsigned int type, unsigned int num) +{ + struct pnp_resource_table *res = &dev->res; + + switch (type) { + case IORESOURCE_IO: + if (num >= PNP_MAX_PORT) + return NULL; + return &res->port_resource[num]; + case IORESOURCE_MEM: + if (num >= PNP_MAX_MEM) + return NULL; + return &res->mem_resource[num]; + case IORESOURCE_IRQ: + if (num >= PNP_MAX_IRQ) + return NULL; + return &res->irq_resource[num]; + case IORESOURCE_DMA: + if (num >= PNP_MAX_DMA) + return NULL; + return &res->dma_resource[num]; + } + return NULL; +} +EXPORT_SYMBOL(pnp_get_resource); + /* format is: pnp_reserve_irq=irq1[,irq2] .... */ static int __init pnp_setup_reserve_irq(char *str) { diff --git a/include/linux/pnp.h b/include/linux/pnp.h index e8187d9faf0..b5fd03854fa 100644 --- a/include/linux/pnp.h +++ b/include/linux/pnp.h @@ -25,6 +25,7 @@ struct pnp_dev; /* * Resource Management */ +struct resource *pnp_get_resource(struct pnp_dev *, unsigned int, unsigned int); /* Use these instead of directly reading pnp_dev to get resource information */ #define pnp_port_start(dev,bar) ((dev)->res.port_resource[(bar)].start) |