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libata-acpi: add ata port runtime D3Cold support

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ATA port may support runtime D3Cold state, for example, Zero-power ODD case.
This patch adds wakeup notifier and enable/disable run_wake during
supend/resume.

Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
This commit is contained in:
Lin Ming
2012-06-25 16:13:06 +08:00
committed by Jeff Garzik
parent febe53ba6b
commit 3bd46600a7
4 changed files with 83 additions and 4 deletions
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2
drivers/acpi/sleep.c
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@@ -795,6 +795,7 @@ int acpi_pm_device_sleep_state(struct device *dev, int *d_min_p)
*d_min_p = d_min;
return d_max;
}
EXPORT_SYMBOL(acpi_pm_device_sleep_state);
#endif /* CONFIG_PM */
#ifdef CONFIG_PM_SLEEP
@@ -831,6 +832,7 @@ int acpi_pm_device_run_wake(struct device *phys_dev, bool enable)
return 0;
}
EXPORT_SYMBOL(acpi_pm_device_run_wake);
/**
* acpi_pm_device_sleep_wake - enable or disable the system wake-up