projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| dc38ad40 SG |
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> | |
| dc38ad40 | 22 | #include <linux/platform_device.h> |
| dbc4245b | 23 | #include <linux/amba/bus.h> |
| dc38ad40 SG |
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: | |
| 84082d66 LW |
69 | if (dmamask) |
| 70 | kfree(pdev->dev.dma_mask); | |
| dc38ad40 SG |
71 | platform_device_put(pdev); |
| 72 | return ERR_PTR(ret); | |
| 73 | } | |
| 74 | ||
| 75 | return pdev; | |
| 76 | } | |
| dbc4245b | 77 | |
| 8d7cf837 SG |
78 | struct device mxs_apbh_bus = { |
| 79 | .init_name = "mxs_apbh", | |
| 80 | .parent = &platform_bus, | |
| 81 | }; | |
| 82 | ||
| 83 | static int __init mxs_device_init(void) | |
| 84 | { | |
| 85 | return device_register(&mxs_apbh_bus); | |
| 86 | } | |
| 87 | core_initcall(mxs_device_init); |