diff options
| author | Lin Ming <ming.m.lin@intel.com> | 2011-05-04 22:56:43 +0800 |
|---|---|---|
| committer | Len Brown <len.brown@intel.com> | 2011-05-29 02:21:08 -0400 |
| commit | 28c2103dad04dba29ba86e22dad5735db8f0e13c (patch) | |
| tree | 7bdd422ae53e4f48bdaa48e1d83e6c25a1ee56e4 /drivers | |
| parent | 61c4f2c81c61f73549928dfd9f3e8f26aa36a8cf (diff) | |
ACPI: Add D3 cold state
_SxW returns an Integer containing the lowest D-state supported in state
Sx. If OSPM has not indicated that it supports _PR3, then the value “3”
corresponds to D3. If it has indicated _PR3 support, the value “3”
represents D3hot and the value “4” represents D3cold.
Linux does set _OSC._PR3, so we should fix it to expect that _SxW can
return 4.
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Acked-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/acpi/bus.c | 2 | ||||
| -rw-r--r-- | drivers/pci/pci-acpi.c | 2 |
2 files changed, 3 insertions, 1 deletions
diff --git a/drivers/acpi/bus.c b/drivers/acpi/bus.c index 9749980ca6ca..d1e06c182cdb 100644 --- a/drivers/acpi/bus.c +++ b/drivers/acpi/bus.c @@ -227,7 +227,7 @@ static int __acpi_bus_set_power(struct acpi_device *device, int state) acpi_status status = AE_OK; char object_name[5] = { '_', 'P', 'S', '0' + state, '\0' }; - if (!device || (state < ACPI_STATE_D0) || (state > ACPI_STATE_D3)) + if (!device || (state < ACPI_STATE_D0) || (state > ACPI_STATE_D3_COLD)) return -EINVAL; /* Make sure this is a valid target state */ diff --git a/drivers/pci/pci-acpi.c b/drivers/pci/pci-acpi.c index 7c3b18e78cee..d36f41ea8cbf 100644 --- a/drivers/pci/pci-acpi.c +++ b/drivers/pci/pci-acpi.c @@ -195,6 +195,8 @@ static pci_power_t acpi_pci_choose_state(struct pci_dev *pdev) return PCI_D2; case ACPI_STATE_D3: return PCI_D3hot; + case ACPI_STATE_D3_COLD: + return PCI_D3cold; } return PCI_POWER_ERROR; } |