29 Oct, 2007

1 commit

• ca77329fb   [libata] Link power management infrastructure ... Browse Code »

  Device Initiated Power Management, which is defined
  in SATA 2.5 can be enabled for disks which support it.
  This patch enables DIPM when the user sets the link
  power management policy to "min_power".

  Additionally, libata drivers can define a function
  (enable_pm) that will perform hardware specific actions to
  enable whatever power management policy the user set up
  for Host Initiated Power management (HIPM).
  This power management policy will be activated after all
  disks have been enumerated and intialized. Drivers should
  also define disable_pm, which will turn off link power
  management, but not change link power management policy.

  Documentation/scsi/link_power_management_policy.txt has additional
  information.

  Signed-off-by: Kristen Carlson Accardi
  Signed-off-by: Jeff Garzik

  Kristen Carlson Accardi

  2007-10-29 23:00:35 +0800