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authorBartlomiej Zolnierkiewicz <bzolnier@gmail.com>2011-10-13 12:57:51 +0200
committerJeff Garzik <jgarzik@redhat.com>2011-10-14 13:32:52 -0400
commitadacaf1449ebb69f68075ba197495e3a61946fc2 (patch)
tree3824335aa08896728232dd8f908599af2fda5013 /drivers/ata
parentb2f104bba39e16f48b7e0ac6447cc167c54505b8 (diff)
downloadop-kernel-dev-adacaf1449ebb69f68075ba197495e3a61946fc2.zip
op-kernel-dev-adacaf1449ebb69f68075ba197495e3a61946fc2.tar.gz
pata_pdc2027x: add Power Management support
Fixes IDE -> libata regression. There shouldn't be any problems with it as corresponding IDE's host driver (pdc202xx_new) has been supporting PCI Power Management since Oct 10 2008 (commit feb22b7f "ide: add proper PCI PM support (v2)") and IDE PM since Jun 14 2003 (patch v2.5.73 "ide: Power Management"). Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Diffstat (limited to 'drivers/ata')
-rw-r--r--drivers/ata/pata_pdc2027x.c30
1 files changed, 30 insertions, 0 deletions
diff --git a/drivers/ata/pata_pdc2027x.c b/drivers/ata/pata_pdc2027x.c
index b1511f3..7d63f24 100644
--- a/drivers/ata/pata_pdc2027x.c
+++ b/drivers/ata/pata_pdc2027x.c
@@ -63,6 +63,7 @@ enum {
};
static int pdc2027x_init_one(struct pci_dev *pdev, const struct pci_device_id *ent);
+static int pdc2027x_reinit_one(struct pci_dev *pdev);
static int pdc2027x_prereset(struct ata_link *link, unsigned long deadline);
static void pdc2027x_set_piomode(struct ata_port *ap, struct ata_device *adev);
static void pdc2027x_set_dmamode(struct ata_port *ap, struct ata_device *adev);
@@ -126,6 +127,10 @@ static struct pci_driver pdc2027x_pci_driver = {
.id_table = pdc2027x_pci_tbl,
.probe = pdc2027x_init_one,
.remove = ata_pci_remove_one,
+#ifdef CONFIG_PM
+ .suspend = ata_pci_device_suspend,
+ .resume = pdc2027x_reinit_one,
+#endif
};
static struct scsi_host_template pdc2027x_sht = {
@@ -754,6 +759,31 @@ static int __devinit pdc2027x_init_one(struct pci_dev *pdev, const struct pci_de
IRQF_SHARED, &pdc2027x_sht);
}
+#ifdef CONFIG_PM
+static int pdc2027x_reinit_one(struct pci_dev *pdev)
+{
+ struct ata_host *host = dev_get_drvdata(&pdev->dev);
+ unsigned int board_idx;
+ int rc;
+
+ rc = ata_pci_device_do_resume(pdev);
+ if (rc)
+ return rc;
+
+ if (pdev->device == PCI_DEVICE_ID_PROMISE_20268 ||
+ pdev->device == PCI_DEVICE_ID_PROMISE_20270)
+ board_idx = PDC_UDMA_100;
+ else
+ board_idx = PDC_UDMA_133;
+
+ if (pdc_hardware_init(host, board_idx))
+ return -EIO;
+
+ ata_host_resume(host);
+ return 0;
+}
+#endif
+
/**
* pdc2027x_init - Called after this module is loaded into the kernel.
*/
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