1 files changed, 101 insertions, 0 deletions

diff --git a/arch/arm/mach-mxs/devices.c b/arch/arm/mach-mxs/devices.c
new file mode 100644
index 00000000000..fe3e847930c
--- /dev/null
+++ b/arch/arm/mach-mxs/devices.c
@@ -0,0 +1,101 @@
+/*
+ * 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 = kmalloc(sizeof(*adev), GFP_KERNEL);
+
+        if (!adev) {
+                pr_err("%s: failed to allocate memory", __func__);
+                return -ENOMEM;
+        }
+
+        *adev = *dev;
+
+        return amba_device_register(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);