1 files changed, 103 insertions, 0 deletions
diff --git a/arch/arm/mach-mxs/devices.c b/arch/arm/mach-mxs/devices.c
new file mode 100644
index 00000000..01faffec
--- /dev/null
+++ b/arch/arm/mach-mxs/devices.c
@@ -0,0 +1,103 @@
+/*
+ * Copyright 2008 Sascha Hauer, kernel@pengutronix.de
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ * Boston, MA  02110-1301, USA.
+ */
+
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/init.h>
+#include <linux/platform_device.h>
+#include <linux/amba/bus.h>
+
+struct platform_device *__init mxs_add_platform_device_dmamask(
+		const char *name, int id,
+		const struct resource *res, unsigned int num_resources,
+		const void *data, size_t size_data, u64 dmamask)
+{
+	int ret = -ENOMEM;
+	struct platform_device *pdev;
+
+	pdev = platform_device_alloc(name, id);
+	if (!pdev)
+		goto err;
+
+	if (dmamask) {
+		/*
+		 * This memory isn't freed when the device is put,
+		 * I don't have a nice idea for that though.  Conceptually
+		 * dma_mask in struct device should not be a pointer.
+		 * See http://thread.gmane.org/gmane.linux.kernel.pci/9081
+		 */
+		pdev->dev.dma_mask =
+			kmalloc(sizeof(*pdev->dev.dma_mask), GFP_KERNEL);
+		if (!pdev->dev.dma_mask)
+			/* ret is still -ENOMEM; */
+			goto err;
+
+		*pdev->dev.dma_mask = dmamask;
+		pdev->dev.coherent_dma_mask = dmamask;
+	}
+
+	if (res) {
+		ret = platform_device_add_resources(pdev, res, num_resources);
+		if (ret)
+			goto err;
+	}
+
+	if (data) {
+		ret = platform_device_add_data(pdev, data, size_data);
+		if (ret)
+			goto err;
+	}
+
+	ret = platform_device_add(pdev);
+	if (ret) {
+err:
+		if (dmamask)
+			kfree(pdev->dev.dma_mask);
+		platform_device_put(pdev);
+		return ERR_PTR(ret);
+	}
+
+	return pdev;
+}
+
+int __init mxs_add_amba_device(const struct amba_device *dev)
+{
+	struct amba_device *adev = amba_device_alloc(dev->dev.init_name,
+		dev->res.start, resource_size(&dev->res));
+
+	if (!adev) {
+		pr_err("%s: failed to allocate memory", __func__);
+		return -ENOMEM;
+	}
+
+	adev->irq[0] = dev->irq[0];
+	adev->irq[1] = dev->irq[1];
+
+	return amba_device_add(adev, &iomem_resource);
+}
+
+struct device mxs_apbh_bus = {
+	.init_name	= "mxs_apbh",
+	.parent         = &platform_bus,
+};
+
+static int __init mxs_device_init(void)
+{
+	return device_register(&mxs_apbh_bus);
+}
+core_initcall(mxs_device_init);