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authorBartlomiej Zolnierkiewicz <bzolnier@gmail.com>2008-10-10 22:39:32 +0200
committerBartlomiej Zolnierkiewicz <bzolnier@gmail.com>2008-10-10 22:39:32 +0200
commitfeb22b7f8e62b1b987a3a1dbad95af767a1df832 (patch)
tree428e5294a077fc629caa3706396e835b164eee7c /drivers/ide/setup-pci.c
parent1785192b5310ee25165768f5bb80f13146788e3e (diff)
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.c33
1 files changed, 33 insertions, 0 deletions
diff --git a/drivers/ide/setup-pci.c b/drivers/ide/setup-pci.c
index a8e9e8a69a5..9f1f9163a13 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