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authorLen Brown <len.brown@intel.com>2011-01-12 04:55:28 -0500
committerLen Brown <len.brown@intel.com>2011-01-12 04:55:28 -0500
commit07bf280521bb06bc8e64f0b998fc391253fcb959 (patch)
tree323f0cb360d890889eacc7344e1dd42a2fb3ef68 /drivers/acpi/scan.c
parent1ae5ec903f71c0ffa583ec54d17415892036ee18 (diff)
parent53eac700b0df1fef8c957b9eedfd7f48120425e3 (diff)
downloadlinux-linaro-android-07bf280521bb06bc8e64f0b998fc391253fcb959.tar.gz
Merge branch 'power-resource' into release
Diffstat (limited to 'drivers/acpi/scan.c')
-rw-r--r--drivers/acpi/scan.c27
1 files changed, 23 insertions, 4 deletions
diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c
index ce6741ee196..148e7492d73 100644
--- a/drivers/acpi/scan.c
+++ b/drivers/acpi/scan.c
@@ -847,6 +847,8 @@ end:
return 0;
}
+static void acpi_bus_add_power_resource(acpi_handle handle);
+
static int acpi_bus_get_power_flags(struct acpi_device *device)
{
acpi_status status = 0;
@@ -875,8 +877,12 @@ static int acpi_bus_get_power_flags(struct acpi_device *device)
acpi_evaluate_reference(device->handle, object_name, NULL,
&ps->resources);
if (ps->resources.count) {
+ int j;
+
device->power.flags.power_resources = 1;
ps->flags.valid = 1;
+ for (j = 0; j < ps->resources.count; j++)
+ acpi_bus_add_power_resource(ps->resources.handles[j]);
}
/* Evaluate "_PSx" to see if we can do explicit sets */
@@ -901,10 +907,7 @@ static int acpi_bus_get_power_flags(struct acpi_device *device)
device->power.states[ACPI_STATE_D3].flags.valid = 1;
device->power.states[ACPI_STATE_D3].power = 0;
- /* TBD: System wake support and resource requirements. */
-
- device->power.state = ACPI_STATE_UNKNOWN;
- acpi_bus_get_power(device->handle, &(device->power.state));
+ acpi_bus_init_power(device);
return 0;
}
@@ -1326,6 +1329,20 @@ end:
#define ACPI_STA_DEFAULT (ACPI_STA_DEVICE_PRESENT | ACPI_STA_DEVICE_ENABLED | \
ACPI_STA_DEVICE_UI | ACPI_STA_DEVICE_FUNCTIONING)
+static void acpi_bus_add_power_resource(acpi_handle handle)
+{
+ struct acpi_bus_ops ops = {
+ .acpi_op_add = 1,
+ .acpi_op_start = 1,
+ };
+ struct acpi_device *device = NULL;
+
+ acpi_bus_get_device(handle, &device);
+ if (!device)
+ acpi_add_single_object(&device, handle, ACPI_BUS_TYPE_POWER,
+ ACPI_STA_DEFAULT, &ops);
+}
+
static int acpi_bus_type_and_status(acpi_handle handle, int *type,
unsigned long long *sta)
{
@@ -1573,6 +1590,8 @@ int __init acpi_scan_init(void)
printk(KERN_ERR PREFIX "Could not register bus type\n");
}
+ acpi_power_init();
+
/*
* Enumerate devices in the ACPI namespace.
*/