Jordan Crouse | dcdb167 | 2010-05-27 13:40:25 -0600 | [diff] [blame] | 1 | /* |
| 2 | * Derived from drm_pci.c |
| 3 | * |
| 4 | * Copyright 2003 José Fonseca. |
| 5 | * Copyright 2003 Leif Delgass. |
| 6 | * Copyright (c) 2009, Code Aurora Forum. |
| 7 | * All Rights Reserved. |
| 8 | * |
| 9 | * Permission is hereby granted, free of charge, to any person obtaining a |
| 10 | * copy of this software and associated documentation files (the "Software"), |
| 11 | * to deal in the Software without restriction, including without limitation |
| 12 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| 13 | * and/or sell copies of the Software, and to permit persons to whom the |
| 14 | * Software is furnished to do so, subject to the following conditions: |
| 15 | * |
| 16 | * The above copyright notice and this permission notice (including the next |
| 17 | * paragraph) shall be included in all copies or substantial portions of the |
| 18 | * Software. |
| 19 | * |
| 20 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 21 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 22 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
| 23 | * AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN |
| 24 | * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION |
| 25 | * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
| 26 | */ |
| 27 | |
| 28 | #include "drmP.h" |
| 29 | |
| 30 | /** |
| 31 | * Register. |
| 32 | * |
| 33 | * \param platdev - Platform device struture |
| 34 | * \return zero on success or a negative number on failure. |
| 35 | * |
| 36 | * Attempt to gets inter module "drm" information. If we are first |
| 37 | * then register the character device and inter module information. |
| 38 | * Try and register, if we fail to register, backout previous work. |
| 39 | */ |
| 40 | |
| 41 | int drm_get_platform_dev(struct platform_device *platdev, |
| 42 | struct drm_driver *driver) |
| 43 | { |
| 44 | struct drm_device *dev; |
| 45 | int ret; |
| 46 | |
| 47 | DRM_DEBUG("\n"); |
| 48 | |
| 49 | dev = kzalloc(sizeof(*dev), GFP_KERNEL); |
| 50 | if (!dev) |
| 51 | return -ENOMEM; |
| 52 | |
| 53 | dev->platformdev = platdev; |
| 54 | dev->dev = &platdev->dev; |
| 55 | |
| 56 | ret = drm_fill_in_dev(dev, NULL, driver); |
| 57 | |
| 58 | if (ret) { |
| 59 | printk(KERN_ERR "DRM: Fill_in_dev failed.\n"); |
| 60 | goto err_g1; |
| 61 | } |
| 62 | |
| 63 | if (drm_core_check_feature(dev, DRIVER_MODESET)) { |
| 64 | dev_set_drvdata(&platdev->dev, dev); |
| 65 | ret = drm_get_minor(dev, &dev->control, DRM_MINOR_CONTROL); |
| 66 | if (ret) |
| 67 | goto err_g1; |
| 68 | } |
| 69 | |
| 70 | ret = drm_get_minor(dev, &dev->primary, DRM_MINOR_LEGACY); |
| 71 | if (ret) |
| 72 | goto err_g2; |
| 73 | |
| 74 | if (dev->driver->load) { |
| 75 | ret = dev->driver->load(dev, 0); |
| 76 | if (ret) |
| 77 | goto err_g3; |
| 78 | } |
| 79 | |
| 80 | /* setup the grouping for the legacy output */ |
| 81 | if (drm_core_check_feature(dev, DRIVER_MODESET)) { |
| 82 | ret = drm_mode_group_init_legacy_group(dev, |
| 83 | &dev->primary->mode_group); |
| 84 | if (ret) |
| 85 | goto err_g3; |
| 86 | } |
| 87 | |
| 88 | list_add_tail(&dev->driver_item, &driver->device_list); |
| 89 | |
| 90 | DRM_INFO("Initialized %s %d.%d.%d %s on minor %d\n", |
| 91 | driver->name, driver->major, driver->minor, driver->patchlevel, |
| 92 | driver->date, dev->primary->index); |
| 93 | |
| 94 | return 0; |
| 95 | |
| 96 | err_g3: |
| 97 | drm_put_minor(&dev->primary); |
| 98 | err_g2: |
| 99 | if (drm_core_check_feature(dev, DRIVER_MODESET)) |
| 100 | drm_put_minor(&dev->control); |
| 101 | err_g1: |
| 102 | kfree(dev); |
| 103 | return ret; |
| 104 | } |
| 105 | EXPORT_SYMBOL(drm_get_platform_dev); |
| 106 | |
| 107 | /** |
| 108 | * Platform device initialization. Called via drm_init at module load time, |
| 109 | * |
| 110 | * \return zero on success or a negative number on failure. |
| 111 | * |
| 112 | * Initializes a drm_device structures,registering the |
| 113 | * stubs |
| 114 | * |
| 115 | * Expands the \c DRIVER_PREINIT and \c DRIVER_POST_INIT macros before and |
| 116 | * after the initialization for driver customization. |
| 117 | */ |
| 118 | |
| 119 | int drm_platform_init(struct drm_driver *driver) |
| 120 | { |
| 121 | return drm_get_platform_dev(driver->platform_device, driver); |
| 122 | } |