diff options
author | Aaron Lu <aaron.lu@intel.com> | 2013-01-15 04:20:58 -0500 |
---|---|---|
committer | Jeff Garzik <jgarzik@redhat.com> | 2013-01-21 15:40:35 -0500 |
commit | afe759511808cd5bb508b598007cf0c7b0ca8e08 (patch) | |
tree | 26073c5a74b5fe2183aa457da6d9b5cc3d9912bb /drivers/ata/Kconfig | |
parent | 1757d902b029a29dfcef63609964385cf8865b5a (diff) |
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 | |||
58 | You can disable this at kernel boot time by using the | 58 | You can disable this at kernel boot time by using the |
59 | option libata.noacpi=1 | 59 | option libata.noacpi=1 |
60 | 60 | ||
61 | config SATA_ZPODD | ||
62 | bool "SATA Zero Power ODD Support" | ||
63 | depends on ATA_ACPI | ||
64 | default n | ||
65 | help | ||
66 | This option adds support for SATA ZPODD. It requires both | ||
67 | ODD and the platform support, and if enabled, will automatically | ||
68 | power on/off the ODD when certain condition is satisfied. This | ||
69 | does not impact user's experience of the ODD, only power is saved | ||
70 | when ODD is not in use(i.e. no disc inside). | ||
71 | |||
72 | If unsure, say N. | ||
73 | |||
61 | config SATA_PMP | 74 | config SATA_PMP |
62 | bool "SATA Port Multiplier support" | 75 | bool "SATA Port Multiplier support" |
63 | default y | 76 | default y |