+
+static struct sysdev_class alchemy_dbdma_sysdev_class = {
+ .name = "dbdma",
+ .suspend = alchemy_dbdma_suspend,
+ .resume = alchemy_dbdma_resume,
+};
+
+static int __init alchemy_dbdma_sysdev_init(void)
+{
+ struct alchemy_dbdma_sysdev *sdev;
+ int ret;
+
+ ret = sysdev_class_register(&alchemy_dbdma_sysdev_class);
+ if (ret)
+ return ret;
+
+ sdev = kzalloc(sizeof(struct alchemy_dbdma_sysdev), GFP_KERNEL);
+ if (!sdev)
+ return -ENOMEM;
+
+ sdev->sysdev.id = -1;
+ sdev->sysdev.cls = &alchemy_dbdma_sysdev_class;
+ ret = sysdev_register(&sdev->sysdev);
+ if (ret)
+ kfree(sdev);
+
+ return ret;
+}
+
+static int __init au1xxx_dbdma_init(void)
+{
+ int irq_nr, ret;
+
+ dbdma_gptr->ddma_config = 0;
+ dbdma_gptr->ddma_throttle = 0;
+ dbdma_gptr->ddma_inten = 0xffff;
+ au_sync();
+
+ switch (alchemy_get_cputype()) {
+ case ALCHEMY_CPU_AU1550:
+ irq_nr = AU1550_DDMA_INT;
+ break;
+ case ALCHEMY_CPU_AU1200:
+ irq_nr = AU1200_DDMA_INT;
+ break;
+ default:
+ return -ENODEV;
+ }
+
+ ret = request_irq(irq_nr, dbdma_interrupt, IRQF_DISABLED,
+ "Au1xxx dbdma", (void *)dbdma_gptr);
+ if (ret)
+ printk(KERN_ERR "Cannot grab DBDMA interrupt!\n");
+ else {
+ dbdma_initialized = 1;
+ printk(KERN_INFO "Alchemy DBDMA initialized\n");
+ ret = alchemy_dbdma_sysdev_init();
+ if (ret) {
+ printk(KERN_ERR "DBDMA PM init failed\n");
+ ret = 0;
+ }
+ }
+
+ return ret;
+}
+subsys_initcall(au1xxx_dbdma_init);
+