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authorVenkatesh Pallipadi <venkatesh.pallipadi@intel.com>2005-03-31 23:23:15 -0500
committerLen Brown <len.brown@intel.com>2005-07-12 00:02:27 -0400
commitacf05f4b7f558051ea0028e8e617144123650272 (patch)
tree6511ffff222d497814e35adf374bfde201fd0fc1 /drivers/acpi/processor_idle.c
parent55e59c511cea3c6c721971467c707e9955922bc2 (diff)
[ACPI] update /proc/acpi/processor/*/power even if only C1 support
Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'drivers/acpi/processor_idle.c')
-rw-r--r--drivers/acpi/processor_idle.c33
1 files changed, 26 insertions, 7 deletions
diff --git a/drivers/acpi/processor_idle.c b/drivers/acpi/processor_idle.c
index ff64d333e95f..79d5ca3066c6 100644
--- a/drivers/acpi/processor_idle.c
+++ b/drivers/acpi/processor_idle.c
@@ -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);