ata_dev_enable_pm
Prev Chapter 5. libata Core Internals Next

Name

ata_dev_enable_pm — enable SATA interface power management

Synopsis

void ata_dev_enable_pm (struct ata_device *  dev,
 enum link_pm  policy);

Arguments

dev

device to enable power management

policy

the link power management policy

Description

Enable SATA Interface power management. This will enable Device Interface Power Management (DIPM) for min_power policy, and then call driver specific callbacks for enabling Host Initiated Power management.

Locking

Caller.

Returns

-EINVAL if IPM is not supported, 0 otherwise.

Prev Up Next
ata_build_rw_tf Home ata_dev_disable_pm