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| author | Tejun Heo <htejun@gmail.com> | 2007-05-15 03:28:16 +0900 |
|---|---|---|
| committer | Jeff Garzik <jeff@garzik.org> | 2007-07-09 12:17:32 -0400 |
| commit | 64578a3de723d502621860f9d4d28f34d001b066 (patch) | |
| tree | 821e7ad8e8d6c3a0f3224b479ff000e00001a165 /drivers/ata/libata.h | |
| parent | e5fa24dfdb522b642dbe9b8b1b692f68dce89835 (diff) | |
| download | linux-64578a3de723d502621860f9d4d28f34d001b066.tar.bz2 | |
libata-acpi: implement _GTM/_STM support
Implement _GTM/_STM support. acpi_gtm is added to ata_port which
stores _GTM parameters over suspend/resume cycle. A new hook
ata_acpi_on_suspend() is responsible for storing _GTM parameters
during suspend. _STM is executed in ata_acpi_on_resume(). With this
change, invoking _GTF is safe on IDE hierarchy and acpi_sata check
before _GTF is removed.
ata_acpi_gtm() and ata_acpi_stm() implementation is taken from Alan
Cox's pata_acpi implementation. ata_acpi_gtm() is fixed such that the
result parameter is not shifted by sizeof(union acpi_object).
Signed-off-by: Tejun Heo <htejun@gmail.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Diffstat (limited to 'drivers/ata/libata.h')
| -rw-r--r-- | drivers/ata/libata.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/ata/libata.h b/drivers/ata/libata.h index bee7cbc4c97c..ba17fc5f2e99 100644 --- a/drivers/ata/libata.h +++ b/drivers/ata/libata.h @@ -99,10 +99,12 @@ extern struct ata_port *ata_port_alloc(struct ata_host *host); /* libata-acpi.c */ #ifdef CONFIG_ATA_ACPI extern void ata_acpi_associate(struct ata_host *host); +extern int ata_acpi_on_suspend(struct ata_port *ap); extern void ata_acpi_on_resume(struct ata_port *ap); extern int ata_acpi_on_devcfg(struct ata_device *adev); #else static inline void ata_acpi_associate(struct ata_host *host) { } +static inline int ata_acpi_on_suspend(struct ata_port *ap) { return 0; } static inline void ata_acpi_on_resume(struct ata_port *ap) { } static inline int ata_acpi_on_devcfg(struct ata_device *adev) { return 0; } #endif |