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Commit b90eca0a authored by Bjorn Helgaas's avatar Bjorn Helgaas Committed by Len Brown
Browse files

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: default avatarBjorn Helgaas <bjorn.helgaas@hp.com>
Acked-By: default avatarRene Herman <rene.herman@gmail.com>
Signed-off-by: default avatarLen Brown <len.brown@intel.com>
parent d948a8da

drivers/pnp/resource.c

+27 −0
Original line number Original line Diff line number Diff line
@@ -487,6 +487,33 @@ int pnp_check_dma(struct pnp_dev *dev, int idx) 
#endif

#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] .... */

/* format is: pnp_reserve_irq=irq1[,irq2] .... */

static int __init pnp_setup_reserve_irq(char *str)

static int __init pnp_setup_reserve_irq(char *str)

{

{

include/linux/pnp.h

+1 −0
Original line number Original line Diff line number Diff line
@@ -25,6 +25,7 @@ struct pnp_dev; 
/*

/*

 * Resource Management

 * 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 */

/* Use these instead of directly reading pnp_dev to get resource information */

#define pnp_port_start(dev,bar)   ((dev)->res.port_resource[(bar)].start)

#define pnp_port_start(dev,bar)   ((dev)->res.port_resource[(bar)].start)