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authorBjorn Helgaas <bjorn.helgaas@hp.com>2008-04-28 16:34:02 -0600
committerLen Brown <len.brown@intel.com>2008-04-29 03:22:18 -0400
commitcd7ec927d9cd3d2001cbbdce872bd73f6e49c986 (patch)
tree33ed9035c8404b21848a8fff9e4cf8a70d791f3a /drivers/pnp/pnpacpi/rsparser.c
parentbb84b41d1a1e3ad1ebe7f91a7c97d3b6ca242e9d (diff)
downloadlinux-linaro-stable-cd7ec927d9cd3d2001cbbdce872bd73f6e49c986.tar.gz
PNPACPI: extend irq_flags() to set IORESOURCE_IRQ_SHAREABLE when appropriate
This simplifies IRQ resource parsing slightly by computing all the IORESOURCE_IRQ_* flags at the same time. This also keeps track of shareability information when parsing options from _PRS. Previously we ignored shareability in _PRS. 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>
Diffstat (limited to 'drivers/pnp/pnpacpi/rsparser.c')
-rw-r--r--drivers/pnp/pnpacpi/rsparser.c26
1 files changed, 15 insertions, 11 deletions
diff --git a/drivers/pnp/pnpacpi/rsparser.c b/drivers/pnp/pnpacpi/rsparser.c
index 2a47e977d8a8..a5f5e2130e75 100644
--- a/drivers/pnp/pnpacpi/rsparser.c
+++ b/drivers/pnp/pnpacpi/rsparser.c
@@ -32,19 +32,26 @@
/*
* Allocated Resources
*/
-static int irq_flags(int triggering, int polarity)
+static int irq_flags(int triggering, int polarity, int shareable)
{
+ int flags;
+
if (triggering == ACPI_LEVEL_SENSITIVE) {
if (polarity == ACPI_ACTIVE_LOW)
- return IORESOURCE_IRQ_LOWLEVEL;
+ flags = IORESOURCE_IRQ_LOWLEVEL;
else
- return IORESOURCE_IRQ_HIGHLEVEL;
+ flags = IORESOURCE_IRQ_HIGHLEVEL;
} else {
if (polarity == ACPI_ACTIVE_LOW)
- return IORESOURCE_IRQ_LOWEDGE;
+ flags = IORESOURCE_IRQ_LOWEDGE;
else
- return IORESOURCE_IRQ_HIGHEDGE;
+ flags = IORESOURCE_IRQ_HIGHEDGE;
}
+
+ if (shareable)
+ flags |= IORESOURCE_IRQ_SHAREABLE;
+
+ return flags;
}
static void decode_irq_flags(int flag, int *triggering, int *polarity)
@@ -110,16 +117,13 @@ static void pnpacpi_parse_allocated_irqresource(struct pnp_resource_table *res,
}
res->irq_resource[i].flags = IORESOURCE_IRQ; // Also clears _UNSET flag
- res->irq_resource[i].flags |= irq_flags(triggering, polarity);
+ res->irq_resource[i].flags |= irq_flags(triggering, polarity, shareable);
irq = acpi_register_gsi(gsi, triggering, polarity);
if (irq < 0) {
res->irq_resource[i].flags |= IORESOURCE_DISABLED;
return;
}
- if (shareable)
- res->irq_resource[i].flags |= IORESOURCE_IRQ_SHAREABLE;
-
res->irq_resource[i].start = irq;
res->irq_resource[i].end = irq;
pcibios_penalize_isa_irq(irq, 1);
@@ -441,7 +445,7 @@ static __init void pnpacpi_parse_irq_option(struct pnp_option *option,
for (i = 0; i < p->interrupt_count; i++)
if (p->interrupts[i])
__set_bit(p->interrupts[i], irq->map);
- irq->flags = irq_flags(p->triggering, p->polarity);
+ irq->flags = irq_flags(p->triggering, p->polarity, p->sharable);
pnp_register_irq_resource(option, irq);
}
@@ -461,7 +465,7 @@ static __init void pnpacpi_parse_ext_irq_option(struct pnp_option *option,
for (i = 0; i < p->interrupt_count; i++)
if (p->interrupts[i])
__set_bit(p->interrupts[i], irq->map);
- irq->flags = irq_flags(p->triggering, p->polarity);
+ irq->flags = irq_flags(p->triggering, p->polarity, p->sharable);
pnp_register_irq_resource(option, irq);
}