Shawn Guo | dc38ad4 | 2010-12-09 23:12:46 +0800 | [diff] [blame] | 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> |
Shawn Guo | dc38ad4 | 2010-12-09 23:12:46 +0800 | [diff] [blame] | 22 | #include <linux/platform_device.h> |
Shawn Guo | dbc4245 | 2011-01-04 14:20:52 +0800 | [diff] [blame] | 23 | #include <linux/amba/bus.h> |
Shawn Guo | dc38ad4 | 2010-12-09 23:12:46 +0800 | [diff] [blame] | 24 | |
| 25 | struct 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) { |
| 68 | err: |
Lothar Waßmann | 84082d6 | 2010-12-15 22:11:31 +0100 | [diff] [blame] | 69 | if (dmamask) |
| 70 | kfree(pdev->dev.dma_mask); |
Shawn Guo | dc38ad4 | 2010-12-09 23:12:46 +0800 | [diff] [blame] | 71 | platform_device_put(pdev); |
| 72 | return ERR_PTR(ret); |
| 73 | } |
| 74 | |
| 75 | return pdev; |
| 76 | } |
Shawn Guo | dbc4245 | 2011-01-04 14:20:52 +0800 | [diff] [blame] | 77 | |
| 78 | int __init mxs_add_amba_device(const struct amba_device *dev) |
| 79 | { |
| 80 | struct amba_device *adev = kmalloc(sizeof(*adev), GFP_KERNEL); |
| 81 | |
| 82 | if (!adev) { |
| 83 | pr_err("%s: failed to allocate memory", __func__); |
| 84 | return -ENOMEM; |
| 85 | } |
| 86 | |
| 87 | *adev = *dev; |
| 88 | |
| 89 | return amba_device_register(adev, &iomem_resource); |
| 90 | } |
Shawn Guo | 8d7cf83 | 2011-06-06 09:37:58 -0600 | [diff] [blame] | 91 | |
| 92 | struct device mxs_apbh_bus = { |
| 93 | .init_name = "mxs_apbh", |
| 94 | .parent = &platform_bus, |
| 95 | }; |
| 96 | |
| 97 | static int __init mxs_device_init(void) |
| 98 | { |
| 99 | return device_register(&mxs_apbh_bus); |
| 100 | } |
| 101 | core_initcall(mxs_device_init); |