| /* |
| * drivers/gpu/tegra/tegra_ion.c |
| * |
| * Copyright (C) 2011 Google, Inc. |
| * |
| * This software is licensed under the terms of the GNU General Public |
| * License version 2, as published by the Free Software Foundation, and |
| * may be copied, distributed, and modified under those terms. |
| * |
| * 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. |
| * |
| */ |
| |
| #include <linux/err.h> |
| #include <linux/platform_device.h> |
| #include <linux/slab.h> |
| #include "../ion.h" |
| #include "../ion_priv.h" |
| |
| struct ion_device *idev; |
| struct ion_mapper *tegra_user_mapper; |
| int num_heaps; |
| struct ion_heap **heaps; |
| |
| int tegra_ion_probe(struct platform_device *pdev) |
| { |
| struct ion_platform_data *pdata = pdev->dev.platform_data; |
| int err; |
| int i; |
| |
| num_heaps = pdata->nr; |
| |
| heaps = kzalloc(sizeof(struct ion_heap *) * pdata->nr, GFP_KERNEL); |
| |
| idev = ion_device_create(NULL); |
| if (IS_ERR_OR_NULL(idev)) { |
| kfree(heaps); |
| return PTR_ERR(idev); |
| } |
| |
| /* create the heaps as specified in the board file */ |
| for (i = 0; i < num_heaps; i++) { |
| struct ion_platform_heap *heap_data = &pdata->heaps[i]; |
| |
| heaps[i] = ion_heap_create(heap_data); |
| if (IS_ERR_OR_NULL(heaps[i])) { |
| err = PTR_ERR(heaps[i]); |
| goto err; |
| } |
| ion_device_add_heap(idev, heaps[i]); |
| } |
| platform_set_drvdata(pdev, idev); |
| return 0; |
| err: |
| for (i = 0; i < num_heaps; i++) { |
| if (heaps[i]) |
| ion_heap_destroy(heaps[i]); |
| } |
| kfree(heaps); |
| return err; |
| } |
| |
| int tegra_ion_remove(struct platform_device *pdev) |
| { |
| struct ion_device *idev = platform_get_drvdata(pdev); |
| int i; |
| |
| ion_device_destroy(idev); |
| for (i = 0; i < num_heaps; i++) |
| ion_heap_destroy(heaps[i]); |
| kfree(heaps); |
| return 0; |
| } |
| |
| static struct platform_driver ion_driver = { |
| .probe = tegra_ion_probe, |
| .remove = tegra_ion_remove, |
| .driver = { .name = "ion-tegra" } |
| }; |
| |
| static int __init ion_init(void) |
| { |
| return platform_driver_register(&ion_driver); |
| } |
| |
| static void __exit ion_exit(void) |
| { |
| platform_driver_unregister(&ion_driver); |
| } |
| |
| module_init(ion_init); |
| module_exit(ion_exit); |
| |