X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=arch%2Farm%2Fmach-omap%2Fbus.c;h=07da30d52b3a323b7bb99c244f0800dfa0d6aabb;hb=1be35e94e1da3669db492995cd2c8b1a37016b11;hp=24a57f2a8dd04ad093acf4a36837bdebca30cba2;hpb=a91482bdcc2e0f6035702e46f1b99043a0893346;p=linux-2.6.git

diff --git a/arch/arm/mach-omap/bus.c b/arch/arm/mach-omap/bus.c
index 24a57f2a8..07da30d52 100644
--- a/arch/arm/mach-omap/bus.c
+++ b/arch/arm/mach-omap/bus.c
@@ -81,6 +81,40 @@ static struct bus_type omap_bus_types[OMAP_NR_BUSES] = {
 	},
 };
 
+#ifdef CONFIG_ARCH_OMAP1510
+/*
+ * NOTE: This code _should_ go somewhere else. But let's wait for the
+ *	 dma-mapping code to settle down first.
+ */
+
+/*
+ * Test for Local Bus device in order to do address translation between
+ * dma_handle and Local Bus address.
+ */
+inline int dmadev_uses_omap_lbus(struct device * dev)
+{
+	if (dev == NULL || !cpu_is_omap1510())
+		return 0;
+	return dev->bus == &omap_bus_types[OMAP_BUS_LBUS] ? 1 : 0;
+}
+
+/*
+ * Translate bus address to Local Bus address for dma-mapping
+ */
+inline int dmadev_to_lbus(dma_addr_t addr)
+{
+	return bus_to_lbus(addr);
+}
+
+/*
+ * Translate Local Bus address to bus address for dma-mapping
+ */
+inline int lbus_to_dmadev(dma_addr_t addr)
+{
+	return lbus_to_bus(addr);
+}
+#endif
+
 static int omap_bus_match(struct device *dev, struct device_driver *drv)
 {
 	struct omap_dev *omapdev = OMAP_DEV(dev);
@@ -244,3 +278,8 @@ EXPORT_SYMBOL(omap_driver_unregister);
 EXPORT_SYMBOL(omap_device_register);
 EXPORT_SYMBOL(omap_device_unregister);
 
+#ifdef CONFIG_ARCH_OMAP1510
+EXPORT_SYMBOL(dmadev_uses_omap_lbus);
+EXPORT_SYMBOL(dmadev_to_lbus);
+EXPORT_SYMBOL(lbus_to_dmadev);
+#endif