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1c248b7d ID |
1 | /* exynos_drm_core.c |
2 | * | |
3 | * Copyright (c) 2011 Samsung Electronics Co., Ltd. | |
4 | * Author: | |
5 | * Inki Dae <inki.dae@samsung.com> | |
6 | * Joonyoung Shim <jy0922.shim@samsung.com> | |
7 | * Seung-Woo Kim <sw0312.kim@samsung.com> | |
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 | |
23 | * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR | |
24 | * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, | |
25 | * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR | |
26 | * OTHER DEALINGS IN THE SOFTWARE. | |
27 | */ | |
28 | ||
29 | #include "drmP.h" | |
30 | #include "exynos_drm_drv.h" | |
31 | #include "exynos_drm_encoder.h" | |
32 | #include "exynos_drm_connector.h" | |
33 | #include "exynos_drm_fbdev.h" | |
34 | ||
1c248b7d ID |
35 | static LIST_HEAD(exynos_drm_subdrv_list); |
36 | static struct drm_device *drm_dev; | |
37 | ||
38 | static int exynos_drm_subdrv_probe(struct drm_device *dev, | |
39 | struct exynos_drm_subdrv *subdrv) | |
40 | { | |
41 | struct drm_encoder *encoder; | |
42 | struct drm_connector *connector; | |
43 | ||
44 | DRM_DEBUG_DRIVER("%s\n", __FILE__); | |
45 | ||
46 | if (subdrv->probe) { | |
47 | int ret; | |
48 | ||
49 | /* | |
50 | * this probe callback would be called by sub driver | |
51 | * after setting of all resources to this sub driver, | |
52 | * such as clock, irq and register map are done or by load() | |
53 | * of exynos drm driver. | |
54 | * | |
55 | * P.S. note that this driver is considered for modularization. | |
56 | */ | |
41c24346 | 57 | ret = subdrv->probe(dev, subdrv->manager.dev); |
1c248b7d ID |
58 | if (ret) |
59 | return ret; | |
60 | } | |
61 | ||
a31f6ecf JS |
62 | if (subdrv->is_local) |
63 | return 0; | |
64 | ||
1c248b7d ID |
65 | /* create and initialize a encoder for this sub driver. */ |
66 | encoder = exynos_drm_encoder_create(dev, &subdrv->manager, | |
67 | (1 << MAX_CRTC) - 1); | |
68 | if (!encoder) { | |
69 | DRM_ERROR("failed to create encoder\n"); | |
70 | return -EFAULT; | |
71 | } | |
72 | ||
73 | /* | |
74 | * create and initialize a connector for this sub driver and | |
75 | * attach the encoder created above to the connector. | |
76 | */ | |
77 | connector = exynos_drm_connector_create(dev, encoder); | |
78 | if (!connector) { | |
79 | DRM_ERROR("failed to create connector\n"); | |
80 | encoder->funcs->destroy(encoder); | |
81 | return -EFAULT; | |
82 | } | |
83 | ||
84 | subdrv->encoder = encoder; | |
85 | subdrv->connector = connector; | |
86 | ||
87 | return 0; | |
88 | } | |
89 | ||
90 | static void exynos_drm_subdrv_remove(struct drm_device *dev, | |
91 | struct exynos_drm_subdrv *subdrv) | |
92 | { | |
93 | DRM_DEBUG_DRIVER("%s\n", __FILE__); | |
94 | ||
95 | if (subdrv->remove) | |
96 | subdrv->remove(dev); | |
97 | ||
98 | if (subdrv->encoder) { | |
99 | struct drm_encoder *encoder = subdrv->encoder; | |
100 | encoder->funcs->destroy(encoder); | |
101 | subdrv->encoder = NULL; | |
102 | } | |
103 | ||
104 | if (subdrv->connector) { | |
105 | struct drm_connector *connector = subdrv->connector; | |
106 | connector->funcs->destroy(connector); | |
107 | subdrv->connector = NULL; | |
108 | } | |
109 | } | |
110 | ||
111 | int exynos_drm_device_register(struct drm_device *dev) | |
112 | { | |
113 | struct exynos_drm_subdrv *subdrv, *n; | |
114 | int err; | |
115 | ||
116 | DRM_DEBUG_DRIVER("%s\n", __FILE__); | |
117 | ||
118 | if (!dev) | |
119 | return -EINVAL; | |
120 | ||
132a5b91 | 121 | drm_dev = dev; |
1c248b7d | 122 | |
1c248b7d | 123 | list_for_each_entry_safe(subdrv, n, &exynos_drm_subdrv_list, list) { |
132a5b91 | 124 | subdrv->drm_dev = dev; |
1c248b7d ID |
125 | err = exynos_drm_subdrv_probe(dev, subdrv); |
126 | if (err) { | |
127 | DRM_DEBUG("exynos drm subdrv probe failed.\n"); | |
128 | list_del(&subdrv->list); | |
129 | } | |
130 | } | |
131 | ||
1c248b7d ID |
132 | return 0; |
133 | } | |
134 | EXPORT_SYMBOL_GPL(exynos_drm_device_register); | |
135 | ||
136 | int exynos_drm_device_unregister(struct drm_device *dev) | |
137 | { | |
138 | struct exynos_drm_subdrv *subdrv; | |
139 | ||
140 | DRM_DEBUG_DRIVER("%s\n", __FILE__); | |
141 | ||
132a5b91 | 142 | if (!dev) { |
1c248b7d ID |
143 | WARN(1, "Unexpected drm device unregister!\n"); |
144 | return -EINVAL; | |
145 | } | |
146 | ||
1c248b7d ID |
147 | list_for_each_entry(subdrv, &exynos_drm_subdrv_list, list) |
148 | exynos_drm_subdrv_remove(dev, subdrv); | |
149 | ||
150 | drm_dev = NULL; | |
1c248b7d ID |
151 | |
152 | return 0; | |
153 | } | |
154 | EXPORT_SYMBOL_GPL(exynos_drm_device_unregister); | |
155 | ||
1c248b7d ID |
156 | int exynos_drm_subdrv_register(struct exynos_drm_subdrv *subdrv) |
157 | { | |
1c248b7d ID |
158 | DRM_DEBUG_DRIVER("%s\n", __FILE__); |
159 | ||
160 | if (!subdrv) | |
161 | return -EINVAL; | |
162 | ||
1c248b7d | 163 | list_add_tail(&subdrv->list, &exynos_drm_subdrv_list); |
1c248b7d ID |
164 | |
165 | return 0; | |
166 | } | |
167 | EXPORT_SYMBOL_GPL(exynos_drm_subdrv_register); | |
168 | ||
169 | int exynos_drm_subdrv_unregister(struct exynos_drm_subdrv *subdrv) | |
170 | { | |
1c248b7d ID |
171 | DRM_DEBUG_DRIVER("%s\n", __FILE__); |
172 | ||
132a5b91 JS |
173 | if (!subdrv) |
174 | return -EINVAL; | |
1c248b7d | 175 | |
132a5b91 | 176 | list_del(&subdrv->list); |
1c248b7d | 177 | |
132a5b91 | 178 | return 0; |
1c248b7d ID |
179 | } |
180 | EXPORT_SYMBOL_GPL(exynos_drm_subdrv_unregister); | |
9084f7b8 JS |
181 | |
182 | int exynos_drm_subdrv_open(struct drm_device *dev, struct drm_file *file) | |
183 | { | |
184 | struct exynos_drm_subdrv *subdrv; | |
185 | int ret; | |
186 | ||
187 | list_for_each_entry(subdrv, &exynos_drm_subdrv_list, list) { | |
188 | if (subdrv->open) { | |
189 | ret = subdrv->open(dev, subdrv->manager.dev, file); | |
190 | if (ret) | |
191 | goto err; | |
192 | } | |
193 | } | |
194 | ||
195 | return 0; | |
196 | ||
197 | err: | |
198 | list_for_each_entry_reverse(subdrv, &subdrv->list, list) { | |
199 | if (subdrv->close) | |
200 | subdrv->close(dev, subdrv->manager.dev, file); | |
201 | } | |
202 | return ret; | |
203 | } | |
204 | EXPORT_SYMBOL_GPL(exynos_drm_subdrv_open); | |
205 | ||
206 | void exynos_drm_subdrv_close(struct drm_device *dev, struct drm_file *file) | |
207 | { | |
208 | struct exynos_drm_subdrv *subdrv; | |
209 | ||
210 | list_for_each_entry(subdrv, &exynos_drm_subdrv_list, list) { | |
211 | if (subdrv->close) | |
212 | subdrv->close(dev, subdrv->manager.dev, file); | |
213 | } | |
214 | } | |
215 | EXPORT_SYMBOL_GPL(exynos_drm_subdrv_close); |