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[-v3,4/4] PCI/PM: Add ABI document for sysfs file d3cold_allowed

Message ID 1344388061-18981-5-git-send-email-ying.huang@intel.com (mailing list archive)
State New, archived
Headers show

Commit Message

ying.huang@intel.com Aug. 8, 2012, 1:07 a.m. UTC
This patch adds ABI document for the following sysfs file:


Signed-off-by: Huang Ying <ying.huang@intel.com>
Acked-by: Rafael J. Wysocki <rjw@sisk.pl>
 Documentation/ABI/testing/sysfs-bus-pci |   12 ++++++++++++
 1 file changed, 12 insertions(+)

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diff mbox


--- 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>
+		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.