Kernel/linux
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git synced 2025-01-12 08:09:56 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

[ACPI] update /proc/acpi/processor/*/power even if only C1 support

Browse Source 
Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
This commit is contained in:
Venkatesh Pallipadi 2005-03-31 23:23:15 -05:00 committed by Len Brown
parent 55e59c511c
commit acf05f4b7f
1 changed files with 26 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

33
drivers/acpi/processor_idle.c
View File

@ -519,6 +519,29 @@ static int acpi_processor_get_power_info_fadt (struct acpi_processor *pr)
}
static int acpi_processor_get_power_info_default_c1 (struct acpi_processor *pr)
{
int i;
ACPI_FUNCTION_TRACE("acpi_processor_get_power_info_default_c1");
for (i = 0; i < ACPI_PROCESSOR_MAX_POWER; i++)
memset(pr->power.states, 0, sizeof(struct acpi_processor_cx));
/* if info is obtained from pblk/fadt, type equals state */
pr->power.states[ACPI_STATE_C1].type = ACPI_STATE_C1;
pr->power.states[ACPI_STATE_C2].type = ACPI_STATE_C2;
pr->power.states[ACPI_STATE_C3].type = ACPI_STATE_C3;
/* the C0 state only exists as a filler in our array,
* and all processors need to support C1 */
pr->power.states[ACPI_STATE_C0].valid = 1;
pr->power.states[ACPI_STATE_C1].valid = 1;
return_VALUE(0);
}
static int acpi_processor_get_power_info_cst (struct acpi_processor *pr)
{
acpi_status status = 0;
@ -787,10 +810,7 @@ static int acpi_processor_get_power_info (
if ((result) || (acpi_processor_power_verify(pr) < 2)) {
result = acpi_processor_get_power_info_fadt(pr);
if (result)
return_VALUE(result);
if (acpi_processor_power_verify(pr) < 2)
return_VALUE(-ENODEV);
result = acpi_processor_get_power_info_default_c1(pr);
}
/*
@ -810,11 +830,10 @@ static int acpi_processor_get_power_info (
* CPU as being "idle manageable"
*/
for (i = 1; i < ACPI_PROCESSOR_MAX_POWER; i++) {
if (pr->power.states[i].valid)
if (pr->power.states[i].valid) {
pr->power.count = i;
if ((pr->power.states[i].valid) &&
(pr->power.states[i].type >= ACPI_STATE_C2))
pr->flags.power = 1;
}
}
return_VALUE(0);