Commit | Line | Data |
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dcdb1674 JC |
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 | } |