diff options
| author | Alex Chiang <achiang@hp.com> | 2009-12-20 12:19:24 -0700 |
|---|---|---|
| committer | Len Brown <len.brown@intel.com> | 2009-12-22 03:24:12 -0500 |
| commit | 08ea48a326d8030ef5b7fb02292faf5a53c95e0a (patch) | |
| tree | c0f9dd9001c50925fc85b18b5f2afc24000d90f6 /drivers/acpi | |
| parent | 407cd87c54e76c266245e8faef8dd4a84b7254fe (diff) | |
ACPI: processor: factor out common _PDC settings
Both x86 and ia64 initialize _PDC with mostly common bit settings.
Factor out the common settings and leave the arch-specific ones alone.
Cc: Tony Luck <tony.luck@intel.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Signed-off-by: Alex Chiang <achiang@hp.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'drivers/acpi')
| -rw-r--r-- | drivers/acpi/processor_pdc.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/acpi/processor_pdc.c b/drivers/acpi/processor_pdc.c index 87946b6da76..ccda7c95d07 100644 --- a/drivers/acpi/processor_pdc.c +++ b/drivers/acpi/processor_pdc.c @@ -33,6 +33,15 @@ static struct dmi_system_id __cpuinitdata processor_idle_dmi_table[] = { {}, }; +static void acpi_set_pdc_bits(u32 *buf) +{ + buf[0] = ACPI_PDC_REVISION_ID; + buf[1] = 1; + + /* Enable coordination with firmware's _TSD info */ + buf[2] = ACPI_PDC_SMP_T_SWCOORD; +} + static void acpi_processor_init_pdc(struct acpi_processor *pr) { struct acpi_object_list *obj_list; @@ -63,6 +72,8 @@ static void acpi_processor_init_pdc(struct acpi_processor *pr) return; } + acpi_set_pdc_bits(buf); + obj->type = ACPI_TYPE_BUFFER; obj->buffer.length = 12; obj->buffer.pointer = (u8 *) buf; |