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| author | Aaron Lu | 2013-01-15 10:20:58 +0100 |
|---|---|---|
| committer | Jeff Garzik | 2013-01-21 21:40:35 +0100 |
| commit | afe759511808cd5bb508b598007cf0c7b0ca8e08 (patch) | |
| tree | 26073c5a74b5fe2183aa457da6d9b5cc3d9912bb /drivers/ata/Kconfig | |
| parent | libata: export host controller number thru /sys (diff) | |
| download | kernel-qcow2-linux-afe759511808cd5bb508b598007cf0c7b0ca8e08.tar.gz kernel-qcow2-linux-afe759511808cd5bb508b598007cf0c7b0ca8e08.tar.xz kernel-qcow2-linux-afe759511808cd5bb508b598007cf0c7b0ca8e08.zip | |
libata: identify and init ZPODD devices
The ODD can be enabled for ZPODD if the following three conditions are
satisfied:
1 The ODD supports device attention;
2 The platform can runtime power off the ODD through ACPI;
3 The ODD is either slot type or drawer type.
For such ODDs, zpodd_init is called and a new structure is allocated for
it to store ZPODD related stuffs.
And the zpodd_dev_enabled function is used to test if ZPODD is currently
enabled for this ODD.
A new config CONFIG_SATA_ZPODD is added to selectively build ZPODD code.
Signed-off-by: Aaron Lu <aaron.lu@intel.com>
Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Diffstat (limited to 'drivers/ata/Kconfig')
| -rw-r--r-- | drivers/ata/Kconfig | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/ata/Kconfig b/drivers/ata/Kconfig index e08d322d01d7..996d16c9c6e5 100644 --- a/drivers/ata/Kconfig +++ b/drivers/ata/Kconfig @@ -58,6 +58,19 @@ config ATA_ACPI You can disable this at kernel boot time by using the option libata.noacpi=1 +config SATA_ZPODD + bool "SATA Zero Power ODD Support" + depends on ATA_ACPI + default n + help + This option adds support for SATA ZPODD. It requires both + ODD and the platform support, and if enabled, will automatically + power on/off the ODD when certain condition is satisfied. This + does not impact user's experience of the ODD, only power is saved + when ODD is not in use(i.e. no disc inside). + + If unsure, say N. + config SATA_PMP bool "SATA Port Multiplier support" default y |