Merge git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc

1 files changed, 15 insertions, 0 deletions

diff --git a/drivers/ide/pci/aec62xx.c b/drivers/ide/pci/aec62xx.c
index a21b1e11eef4..c743e68c33aa 100644
--- a/drivers/ide/pci/aec62xx.c
+++ b/drivers/ide/pci/aec62xx.c
@@ -262,6 +262,21 @@ static unsigned int __devinit init_chipset_aec62xx(struct pci_dev *dev, const ch
         else
                 pci_set_drvdata(dev, (void *) aec6xxx_34_base);
 
+        /* These are necessary to get AEC6280 Macintosh cards to work */
+        if ((dev->device == PCI_DEVICE_ID_ARTOP_ATP865) ||
+            (dev->device == PCI_DEVICE_ID_ARTOP_ATP865R)) {
+                u8 reg49h = 0, reg4ah = 0;
+                /* Clear reset and test bits.  */
+                pci_read_config_byte(dev, 0x49, &reg49h);
+                pci_write_config_byte(dev, 0x49, reg49h & ~0x30);
+                /* Enable chip interrupt output.  */
+                pci_read_config_byte(dev, 0x4a, &reg4ah);
+                pci_write_config_byte(dev, 0x4a, reg4ah & ~0x01);
+                /* Enable burst mode. */
+                pci_read_config_byte(dev, 0x4a, &reg4ah);
+                pci_write_config_byte(dev, 0x4a, reg4ah | 0x80);
+        }
+
         return dev->irq;
 }