From feb22b7f8e62b1b987a3a1dbad95af767a1df832 Mon Sep 17 00:00:00 2001 From: Bartlomiej Zolnierkiewicz Date: Fri, 10 Oct 2008 22:39:32 +0200 Subject: 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 Cc: "Rafael J. Wysocki" Signed-off-by: Bartlomiej Zolnierkiewicz --- drivers/ide/setup-pci.c | 33 +++++++++++++++++++++++++++++++++ 1 file changed, 33 insertions(+) (limited to 'drivers/ide/setup-pci.c') 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 -- cgit v1.2.3