diff options
| author | Huang Ying <ying.huang@intel.com> | 2012-08-08 09:07:41 +0800 |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2012-08-21 17:36:33 -0600 |
| commit | 046c6531b60e8b9eabf47820a06161338a612167 (patch) | |
| tree | 8fb963061b2f1162c8801f85b402df2a65382026 /Documentation | |
| parent | 3d8387efe1ad9eb5bfe8a2e58cdbd1b88b247eef (diff) | |
PCI/PM: Add ABI document for sysfs file d3cold_allowed
This patch adds ABI document for the following sysfs file:
/sys/bus/pci/devices/.../d3cold_allowed
Signed-off-by: Huang Ying <ying.huang@intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Rafael J. Wysocki <rjw@sisk.pl>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/ABI/testing/sysfs-bus-pci | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/sysfs-bus-pci b/Documentation/ABI/testing/sysfs-bus-pci index 34f51100f02..dff1f48d252 100644 --- a/Documentation/ABI/testing/sysfs-bus-pci +++ b/Documentation/ABI/testing/sysfs-bus-pci @@ -210,3 +210,15 @@ Users: firmware assigned instance number of the PCI device that can help in understanding the firmware intended order of the PCI device. + +What: /sys/bus/pci/devices/.../d3cold_allowed +Date: July 2012 +Contact: Huang Ying <ying.huang@intel.com> +Description: + d3cold_allowed is bit to control whether the corresponding PCI + device can be put into D3Cold state. If it is cleared, the + device will never be put into D3Cold state. If it is set, the + device may be put into D3Cold state if other requirements are + satisfied too. Reading this attribute will show the current + value of d3cold_allowed bit. Writing this attribute will set + the value of d3cold_allowed bit. |