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| author | Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> | 2008-10-11 00:39:32 +0400 |
|---|---|---|
| committer | Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> | 2008-10-11 00:39:32 +0400 |
| commit | feb22b7f8e62b1b987a3a1dbad95af767a1df832 (patch) | |
| tree | 428e5294a077fc629caa3706396e835b164eee7c /drivers/ide/setup-pci.c | |
| parent | 1785192b5310ee25165768f5bb80f13146788e3e (diff) | |
| download | linux-feb22b7f8e62b1b987a3a1dbad95af767a1df832.tar.xz | |
ide: add proper PCI PM support (v2)
* Keep pointer to ->init_chipset method also in
struct ide_host and set it in ide_host_alloc_all().
* Add ide_pci_suspend() and ide_pci_resume() helpers
(default ->suspend and ->resume implementations).
* ->init_chipset can no longer be marked __devinit.
* Add proper PCI PM support to IDE PCI host drivers
(rz1000.c and tc86c001.c are skipped for now since
they need to be converted from using ->init_hwif
to use ->init_chipset instead).
v2:
* Cleanup CONFIG_PM #ifdef-s per akpm's suggestion.
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: "Rafael J. Wysocki" <rjw@sisk.pl>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Diffstat (limited to 'drivers/ide/setup-pci.c')
| -rw-r--r-- | drivers/ide/setup-pci.c | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/drivers/ide/setup-pci.c b/drivers/ide/setup-pci.c index a8e9e8a69a52..9f1f9163a136 100644 --- a/drivers/ide/setup-pci.c +++ b/drivers/ide/setup-pci.c @@ -659,3 +659,36 @@ void ide_pci_remove(struct pci_dev *dev) pci_disable_device(dev); } EXPORT_SYMBOL_GPL(ide_pci_remove); + +#ifdef CONFIG_PM +int ide_pci_suspend(struct pci_dev *dev, pm_message_t state) +{ + pci_save_state(dev); + pci_disable_device(dev); + pci_set_power_state(dev, pci_choose_state(dev, state)); + + return 0; +} +EXPORT_SYMBOL_GPL(ide_pci_suspend); + +int ide_pci_resume(struct pci_dev *dev) +{ + struct ide_host *host = pci_get_drvdata(dev); + int rc; + + pci_set_power_state(dev, PCI_D0); + + rc = pci_enable_device(dev); + if (rc) + return rc; + + pci_restore_state(dev); + pci_set_master(dev); + + if (host->init_chipset) + host->init_chipset(dev); + + return 0; +} +EXPORT_SYMBOL_GPL(ide_pci_resume); +#endif |