[PATCH 59/86] pata_pdc2027x: add Power Management support

Bartlomiej Zolnierkiewicz
2009-11-25T17:10:18Z

From: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Subject: [PATCH] pata_pdc2027x: add Power Management support

There shouldn't be any problems with it as IDE pdc202xx_new host driver
has been supporting Power Management for over year now.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
---
drivers/ata/pata_pdc2027x.c | 30 ++++++++++++++++++++++++++++++
1 file changed, 30 insertions(+)

Index: b/drivers/ata/pata_pdc2027x.c
===================================================================
--- 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_dr
.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 = {
@@ -758,6 +763,31 @@ static int __devinit pdc2027x_init_one(s
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.
*/