1/*
2 * Copyright 2008 Sascha Hauer, kernel@pengutronix.de
3 *
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public License
6 * as published by the Free Software Foundation; either version 2
7 * of the License, or (at your option) any later version.
8 * This program is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
11 * GNU General Public License for more details.
12 *
13 * You should have received a copy of the GNU General Public License
14 * along with this program; if not, write to the Free Software
15 * Foundation, Inc., 51 Franklin Street, Fifth Floor,
16 * Boston, MA  02110-1301, USA.
17 */
18
19#include <linux/kernel.h>
20#include <linux/slab.h>
21#include <linux/init.h>
22#include <linux/platform_device.h>
23#include <linux/amba/bus.h>
24
25struct platform_device *__init mxs_add_platform_device_dmamask(
26		const char *name, int id,
27		const struct resource *res, unsigned int num_resources,
28		const void *data, size_t size_data, u64 dmamask)
29{
30	int ret = -ENOMEM;
31	struct platform_device *pdev;
32
33	pdev = platform_device_alloc(name, id);
34	if (!pdev)
35		goto err;
36
37	if (dmamask) {
38		/*
39		 * This memory isn't freed when the device is put,
40		 * I don't have a nice idea for that though.  Conceptually
41		 * dma_mask in struct device should not be a pointer.
42		 * See http://thread.gmane.org/gmane.linux.kernel.pci/9081
43		 */
44		pdev->dev.dma_mask =
45			kmalloc(sizeof(*pdev->dev.dma_mask), GFP_KERNEL);
46		if (!pdev->dev.dma_mask)
47			/* ret is still -ENOMEM; */
48			goto err;
49
50		*pdev->dev.dma_mask = dmamask;
51		pdev->dev.coherent_dma_mask = dmamask;
52	}
53
54	if (res) {
55		ret = platform_device_add_resources(pdev, res, num_resources);
56		if (ret)
57			goto err;
58	}
59
60	if (data) {
61		ret = platform_device_add_data(pdev, data, size_data);
62		if (ret)
63			goto err;
64	}
65
66	ret = platform_device_add(pdev);
67	if (ret) {
68err:
69		if (dmamask)
70			kfree(pdev->dev.dma_mask);
71		platform_device_put(pdev);
72		return ERR_PTR(ret);
73	}
74
75	return pdev;
76}
77
78int __init mxs_add_amba_device(const struct amba_device *dev)
79{
80	struct amba_device *adev = amba_device_alloc(dev->dev.init_name,
81		dev->res.start, resource_size(&dev->res));
82
83	if (!adev) {
84		pr_err("%s: failed to allocate memory", __func__);
85		return -ENOMEM;
86	}
87
88	adev->irq[0] = dev->irq[0];
89	adev->irq[1] = dev->irq[1];
90
91	return amba_device_add(adev, &iomem_resource);
92}
93
94struct device mxs_apbh_bus = {
95	.init_name	= "mxs_apbh",
96	.parent         = &platform_bus,
97};
98
99static int __init mxs_device_init(void)
100{
101	return device_register(&mxs_apbh_bus);
102}
103core_initcall(mxs_device_init);
104