1 files changed, 26 insertions, 74 deletions

diff --git a/drivers/amba/bus.c b/drivers/amba/bus.c
index 962041148482..720aa6cdd402 100644
--- a/drivers/amba/bus.c
+++ b/drivers/amba/bus.c
@@ -19,6 +19,7 @@
 #include <linux/clk/clk-conf.h>
 #include <linux/platform_device.h>
 #include <linux/reset.h>
+#include <linux/of_irq.h>
 
 #include <asm/irq.h>
 
@@ -371,14 +372,37 @@ static void amba_device_release(struct device *dev)
 	kfree(d);
 }
 
+static int of_amba_device_decode_irq(struct amba_device *dev)
+{
+	struct device_node *node = dev->dev.of_node;
+	int i, irq = 0;
+
+	if (IS_ENABLED(CONFIG_OF_IRQ) && node) {
+		/* Decode the IRQs and address ranges */
+		for (i = 0; i < AMBA_NR_IRQS; i++) {
+			irq = of_irq_get(node, i);
+			if (irq < 0) {
+				if (irq == -EPROBE_DEFER)
+					return irq;
+				irq = 0;
+			}
+
+			dev->irq[i] = irq;
+		}
+	}
+
+	return 0;
+}
+
 static int amba_device_try_add(struct amba_device *dev, struct resource *parent)
 {
 	u32 size;
 	void __iomem *tmp;
 	int i, ret;
 
-	WARN_ON(dev->irq[0] == (unsigned int)-1);
-	WARN_ON(dev->irq[1] == (unsigned int)-1);
+	ret = of_amba_device_decode_irq(dev);
+	if (ret)
+		goto err_out;
 
 	ret = request_resource(parent, &dev->res);
 	if (ret)
@@ -579,78 +603,6 @@ int amba_device_add(struct amba_device *dev, struct resource *parent)
 }
 EXPORT_SYMBOL_GPL(amba_device_add);
 
-static struct amba_device *
-amba_aphb_device_add(struct device *parent, const char *name,
-		     resource_size_t base, size_t size, int irq1, int irq2,
-		     void *pdata, unsigned int periphid, u64 dma_mask,
-		     struct resource *resbase)
-{
-	struct amba_device *dev;
-	int ret;
-
-	dev = amba_device_alloc(name, base, size);
-	if (!dev)
-		return ERR_PTR(-ENOMEM);
-
-	dev->dev.coherent_dma_mask = dma_mask;
-	dev->irq[0] = irq1;
-	dev->irq[1] = irq2;
-	dev->periphid = periphid;
-	dev->dev.platform_data = pdata;
-	dev->dev.parent = parent;
-
-	ret = amba_device_add(dev, resbase);
-	if (ret) {
-		amba_device_put(dev);
-		return ERR_PTR(ret);
-	}
-
-	return dev;
-}
-
-struct amba_device *
-amba_apb_device_add(struct device *parent, const char *name,
-		    resource_size_t base, size_t size, int irq1, int irq2,
-		    void *pdata, unsigned int periphid)
-{
-	return amba_aphb_device_add(parent, name, base, size, irq1, irq2, pdata,
-				    periphid, 0, &iomem_resource);
-}
-EXPORT_SYMBOL_GPL(amba_apb_device_add);
-
-struct amba_device *
-amba_ahb_device_add(struct device *parent, const char *name,
-		    resource_size_t base, size_t size, int irq1, int irq2,
-		    void *pdata, unsigned int periphid)
-{
-	return amba_aphb_device_add(parent, name, base, size, irq1, irq2, pdata,
-				    periphid, ~0ULL, &iomem_resource);
-}
-EXPORT_SYMBOL_GPL(amba_ahb_device_add);
-
-struct amba_device *
-amba_apb_device_add_res(struct device *parent, const char *name,
-			resource_size_t base, size_t size, int irq1,
-			int irq2, void *pdata, unsigned int periphid,
-			struct resource *resbase)
-{
-	return amba_aphb_device_add(parent, name, base, size, irq1, irq2, pdata,
-				    periphid, 0, resbase);
-}
-EXPORT_SYMBOL_GPL(amba_apb_device_add_res);
-
-struct amba_device *
-amba_ahb_device_add_res(struct device *parent, const char *name,
-			resource_size_t base, size_t size, int irq1,
-			int irq2, void *pdata, unsigned int periphid,
-			struct resource *resbase)
-{
-	return amba_aphb_device_add(parent, name, base, size, irq1, irq2, pdata,
-				    periphid, ~0ULL, resbase);
-}
-EXPORT_SYMBOL_GPL(amba_ahb_device_add_res);
-
-
 static void amba_device_initialize(struct amba_device *dev, const char *name)
 {
 	device_initialize(&dev->dev);