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[PATCH] Add support for type argument in PAL_GET_PSTATE

Browse source 
PAL_GET_PSTATE accepts a type argument to return different kinds of
frequency information.
Refer: Intel Itanium�Architecture Software Developer's Manual -
Volume 2: System Architecture, Revision 2.2
(http://developer.intel.com/design/itanium/manuals/245318.htm)

Add the support for type argument and use Instantaneous frequency
in the acpi driver.

Also fix a bug, where in return value of PAL_GET_PSTATE was getting compared
with 'control' bits instead of 'status' bits.

Signed-off-by: Venkatesh Pallipadi <[email protected]>
Signed-off-by: Tony Luck <[email protected]>
This commit is contained in:
Venkatesh Pallipadi 2006-12-01 15:28:14 -08:00 • committed by Tony Luck
commit 17e77b1cc3
2 changed files with 11 additions and 9 deletions
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9
include/asm-ia64/pal.h
View file

@ -84,6 +84,11 @@
#define PAL_SET_PSTATE 263 /* set the P-state */
#define PAL_BRAND_INFO 274 /* Processor branding information */
#define PAL_GET_PSTATE_TYPE_LASTSET 0
#define PAL_GET_PSTATE_TYPE_AVGANDRESET 1
#define PAL_GET_PSTATE_TYPE_AVGNORESET 2
#define PAL_GET_PSTATE_TYPE_INSTANT 3
#ifndef __ASSEMBLY__
#include <linux/types.h>
@ -1141,10 +1146,10 @@ ia64_pal_halt_info (pal_power_mgmt_info_u_t *power_buf)
/* Get the current P-state information */
static inline s64
ia64_pal_get_pstate (u64 *pstate_index)
ia64_pal_get_pstate (u64 *pstate_index, unsigned long type)
{
struct ia64_pal_retval iprv;
PAL_CALL_STK(iprv, PAL_GET_PSTATE, 0, 0, 0);
PAL_CALL_STK(iprv, PAL_GET_PSTATE, type, 0, 0);
*pstate_index = iprv.v0;
return iprv.status;
}