| 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> |
| 22 | #include <linux/err.h> |
| 23 | #include <linux/platform_device.h> |
| 24 | #include <mach/common.h> |
| 25 | |
| 26 | struct platform_device *__init mxs_add_platform_device_dmamask( |
| 27 | const char *name, int id, |
| 28 | const struct resource *res, unsigned int num_resources, |
| 29 | const void *data, size_t size_data, u64 dmamask) |
| 30 | { |
| 31 | int ret = -ENOMEM; |
| 32 | struct platform_device *pdev; |
| 33 | |
| 34 | pdev = platform_device_alloc(name, id); |
| 35 | if (!pdev) |
| 36 | goto err; |
| 37 | |
| 38 | if (dmamask) { |
| 39 | /* |
| 40 | * This memory isn't freed when the device is put, |
| 41 | * I don't have a nice idea for that though. Conceptually |
| 42 | * dma_mask in struct device should not be a pointer. |
| 43 | * See http://thread.gmane.org/gmane.linux.kernel.pci/9081 |
| 44 | */ |
| 45 | pdev->dev.dma_mask = |
| 46 | kmalloc(sizeof(*pdev->dev.dma_mask), GFP_KERNEL); |
| 47 | if (!pdev->dev.dma_mask) |
| 48 | /* ret is still -ENOMEM; */ |
| 49 | goto err; |
| 50 | |
| 51 | *pdev->dev.dma_mask = dmamask; |
| 52 | pdev->dev.coherent_dma_mask = dmamask; |
| 53 | } |
| 54 | |
| 55 | if (res) { |
| 56 | ret = platform_device_add_resources(pdev, res, num_resources); |
| 57 | if (ret) |
| 58 | goto err; |
| 59 | } |
| 60 | |
| 61 | if (data) { |
| 62 | ret = platform_device_add_data(pdev, data, size_data); |
| 63 | if (ret) |
| 64 | goto err; |
| 65 | } |
| 66 | |
| 67 | ret = platform_device_add(pdev); |
| 68 | if (ret) { |
| 69 | err: |
| 70 | platform_device_put(pdev); |
| 71 | return ERR_PTR(ret); |
| 72 | } |
| 73 | |
| 74 | return pdev; |
| 75 | } |