pata_ninja32: suspend/resume support

I had assumed that the standard recovery would be sufficient for this
hardware but it isn't. Fix up the other registers on resume as needed. See
bug #11735

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>

1 files changed, 34 insertions, 9 deletions

diff --git a/drivers/ata/pata_ninja32.c b/drivers/ata/pata_ninja32.c
index 5e76f96ec7e5..4e466eae8b46 100644
--- a/drivers/ata/pata_ninja32.c
+++ b/drivers/ata/pata_ninja32.c
@@ -44,7 +44,7 @@
 #include <linux/libata.h>
 
 #define DRV_NAME "pata_ninja32"
-#define DRV_VERSION "0.0.1"
+#define DRV_VERSION "0.1.1"
 
 
 /**
@@ -88,6 +88,17 @@ static struct ata_port_operations ninja32_port_ops = {
         .set_piomode    = ninja32_set_piomode,
 };
 
+static void ninja32_program(void __iomem *base)
+{
+        iowrite8(0x05, base + 0x01);    /* Enable interrupt lines */
+        iowrite8(0xBE, base + 0x02);    /* Burst, ?? setup */
+        iowrite8(0x01, base + 0x03);    /* Unknown */
+        iowrite8(0x20, base + 0x04);    /* WAIT0 */
+        iowrite8(0x8f, base + 0x05);    /* Unknown */
+        iowrite8(0xa4, base + 0x1c);    /* Unknown */
+        iowrite8(0x83, base + 0x1d);    /* BMDMA control: WAIT0 */
+}
+
 static int ninja32_init_one(struct pci_dev *dev, const struct pci_device_id *id)
 {
         struct ata_host *host;
@@ -133,18 +144,28 @@ static int ninja32_init_one(struct pci_dev *dev, const struct pci_device_id *id)
         ap->ioaddr.bmdma_addr = base;
         ata_sff_std_ports(&ap->ioaddr);
 
-        iowrite8(0x05, base + 0x01);    /* Enable interrupt lines */
-        iowrite8(0xBE, base + 0x02);    /* Burst, ?? setup */
-        iowrite8(0x01, base + 0x03);    /* Unknown */
-        iowrite8(0x20, base + 0x04);    /* WAIT0 */
-        iowrite8(0x8f, base + 0x05);    /* Unknown */
-        iowrite8(0xa4, base + 0x1c);    /* Unknown */
-        iowrite8(0x83, base + 0x1d);    /* BMDMA control: WAIT0 */
+        ninja32_program(base);
         /* FIXME: Should we disable them at remove ? */
         return ata_host_activate(host, dev->irq, ata_sff_interrupt,
                                  IRQF_SHARED, &ninja32_sht);
 }
 
+#ifdef CONFIG_PM
+
+static int ninja32_reinit_one(struct pci_dev *pdev)
+{
+        struct ata_host *host = dev_get_drvdata(&pdev->dev);
+        int rc;
+
+        rc = ata_pci_device_do_resume(pdev);
+        if (rc)
+                return rc;
+        ninja32_program(host->iomap[0]);
+        ata_host_resume(host);
+        return 0;                       
+}
+#endif
+
 static const struct pci_device_id ninja32[] = {
         { 0x1145, 0xf021, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
         { 0x1145, 0xf024, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
@@ -155,7 +176,11 @@ static struct pci_driver ninja32_pci_driver = {
         .name           = DRV_NAME,
         .id_table       = ninja32,
         .probe          = ninja32_init_one,
-        .remove         = ata_pci_remove_one
+        .remove         = ata_pci_remove_one,
+#ifdef CONFIG_PM
+        .suspend        = ata_pci_device_suspend,
+        .resume         = ninja32_reinit_one,
+#endif
 };
 
 static int __init ninja32_init(void)