/*
* 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;
}
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);
