diff options
Diffstat (limited to 'drivers/char/hpet.c')
| -rw-r--r-- | drivers/char/hpet.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/drivers/char/hpet.c b/drivers/char/hpet.c index 0159c463f0f..e605259e375 100644 --- a/drivers/char/hpet.c +++ b/drivers/char/hpet.c @@ -49,6 +49,8 @@ #define HPET_USER_FREQ (64) #define HPET_DRIFT (500) +#define HPET_RANGE_SIZE 1024 /* from HPET spec */ + static u32 hpet_nhpet, hpet_max_freq = HPET_USER_FREQ; /* A lock for concurrent access by app and isr hpet activity. */ @@ -922,6 +924,21 @@ static acpi_status hpet_resources(struct acpi_resource *res, void *data) for (hpetp = hpets; hpetp; hpetp = hpetp->hp_next) if (hpetp->hp_hpet == hdp->hd_address) return -EBUSY; + } else if (res->id == ACPI_RSTYPE_FIXED_MEM32) { + struct acpi_resource_fixed_mem32 *fixmem32; + + fixmem32 = &res->data.fixed_memory32; + if (!fixmem32) + return -EINVAL; + + hdp->hd_phys_address = fixmem32->range_base_address; + hdp->hd_address = ioremap(fixmem32->range_base_address, + HPET_RANGE_SIZE); + + for (hpetp = hpets; hpetp; hpetp = hpetp->hp_next) + if (hpetp->hp_hpet == hdp->hd_address) { + return -EBUSY; + } } else if (res->id == ACPI_RSTYPE_EXT_IRQ) { struct acpi_resource_ext_irq *irqp; int i; |