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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 | ||
760285e7 | 29 | #include <drm/drmP.h> |
1c248b7d ID |
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 | 35 | static LIST_HEAD(exynos_drm_subdrv_list); |
1c248b7d ID |
36 | |
37 | static int exynos_drm_subdrv_probe(struct drm_device *dev, | |
38 | struct exynos_drm_subdrv *subdrv) | |
39 | { | |
40 | struct drm_encoder *encoder; | |
41 | struct drm_connector *connector; | |
42 | ||
43 | DRM_DEBUG_DRIVER("%s\n", __FILE__); | |
44 | ||
45 | if (subdrv->probe) { | |
46 | int ret; | |
47 | ||
48 | /* | |
49 | * this probe callback would be called by sub driver | |
50 | * after setting of all resources to this sub driver, | |
51 | * such as clock, irq and register map are done or by load() | |
52 | * of exynos drm driver. | |
53 | * | |
54 | * P.S. note that this driver is considered for modularization. | |
55 | */ | |
677e84c1 | 56 | ret = subdrv->probe(dev, subdrv->dev); |
1c248b7d ID |
57 | if (ret) |
58 | return ret; | |
59 | } | |
60 | ||
677e84c1 | 61 | if (!subdrv->manager) |
a31f6ecf JS |
62 | return 0; |
63 | ||
677e84c1 JS |
64 | subdrv->manager->dev = subdrv->dev; |
65 | ||
1c248b7d | 66 | /* create and initialize a encoder for this sub driver. */ |
677e84c1 | 67 | encoder = exynos_drm_encoder_create(dev, subdrv->manager, |
1c248b7d ID |
68 | (1 << MAX_CRTC) - 1); |
69 | if (!encoder) { | |
70 | DRM_ERROR("failed to create encoder\n"); | |
71 | return -EFAULT; | |
72 | } | |
73 | ||
74 | /* | |
75 | * create and initialize a connector for this sub driver and | |
76 | * attach the encoder created above to the connector. | |
77 | */ | |
78 | connector = exynos_drm_connector_create(dev, encoder); | |
79 | if (!connector) { | |
80 | DRM_ERROR("failed to create connector\n"); | |
81 | encoder->funcs->destroy(encoder); | |
82 | return -EFAULT; | |
83 | } | |
84 | ||
85 | subdrv->encoder = encoder; | |
86 | subdrv->connector = connector; | |
87 | ||
88 | return 0; | |
89 | } | |
90 | ||
91 | static void exynos_drm_subdrv_remove(struct drm_device *dev, | |
92 | struct exynos_drm_subdrv *subdrv) | |
93 | { | |
94 | DRM_DEBUG_DRIVER("%s\n", __FILE__); | |
95 | ||
96 | if (subdrv->remove) | |
97 | subdrv->remove(dev); | |
98 | ||
99 | if (subdrv->encoder) { | |
100 | struct drm_encoder *encoder = subdrv->encoder; | |
101 | encoder->funcs->destroy(encoder); | |
102 | subdrv->encoder = NULL; | |
103 | } | |
104 | ||
105 | if (subdrv->connector) { | |
106 | struct drm_connector *connector = subdrv->connector; | |
107 | connector->funcs->destroy(connector); | |
108 | subdrv->connector = NULL; | |
109 | } | |
110 | } | |
111 | ||
112 | int exynos_drm_device_register(struct drm_device *dev) | |
113 | { | |
114 | struct exynos_drm_subdrv *subdrv, *n; | |
115 | int err; | |
116 | ||
117 | DRM_DEBUG_DRIVER("%s\n", __FILE__); | |
118 | ||
119 | if (!dev) | |
120 | return -EINVAL; | |
121 | ||
1c248b7d | 122 | list_for_each_entry_safe(subdrv, n, &exynos_drm_subdrv_list, list) { |
132a5b91 | 123 | subdrv->drm_dev = dev; |
1c248b7d ID |
124 | err = exynos_drm_subdrv_probe(dev, subdrv); |
125 | if (err) { | |
126 | DRM_DEBUG("exynos drm subdrv probe failed.\n"); | |
127 | list_del(&subdrv->list); | |
128 | } | |
129 | } | |
130 | ||
1c248b7d ID |
131 | return 0; |
132 | } | |
133 | EXPORT_SYMBOL_GPL(exynos_drm_device_register); | |
134 | ||
135 | int exynos_drm_device_unregister(struct drm_device *dev) | |
136 | { | |
137 | struct exynos_drm_subdrv *subdrv; | |
138 | ||
139 | DRM_DEBUG_DRIVER("%s\n", __FILE__); | |
140 | ||
132a5b91 | 141 | if (!dev) { |
1c248b7d ID |
142 | WARN(1, "Unexpected drm device unregister!\n"); |
143 | return -EINVAL; | |
144 | } | |
145 | ||
1c248b7d ID |
146 | list_for_each_entry(subdrv, &exynos_drm_subdrv_list, list) |
147 | exynos_drm_subdrv_remove(dev, subdrv); | |
148 | ||
1c248b7d ID |
149 | return 0; |
150 | } | |
151 | EXPORT_SYMBOL_GPL(exynos_drm_device_unregister); | |
152 | ||
1c248b7d ID |
153 | int exynos_drm_subdrv_register(struct exynos_drm_subdrv *subdrv) |
154 | { | |
1c248b7d ID |
155 | DRM_DEBUG_DRIVER("%s\n", __FILE__); |
156 | ||
157 | if (!subdrv) | |
158 | return -EINVAL; | |
159 | ||
1c248b7d | 160 | list_add_tail(&subdrv->list, &exynos_drm_subdrv_list); |
1c248b7d ID |
161 | |
162 | return 0; | |
163 | } | |
164 | EXPORT_SYMBOL_GPL(exynos_drm_subdrv_register); | |
165 | ||
166 | int exynos_drm_subdrv_unregister(struct exynos_drm_subdrv *subdrv) | |
167 | { | |
1c248b7d ID |
168 | DRM_DEBUG_DRIVER("%s\n", __FILE__); |
169 | ||
132a5b91 JS |
170 | if (!subdrv) |
171 | return -EINVAL; | |
1c248b7d | 172 | |
132a5b91 | 173 | list_del(&subdrv->list); |
1c248b7d | 174 | |
132a5b91 | 175 | return 0; |
1c248b7d ID |
176 | } |
177 | EXPORT_SYMBOL_GPL(exynos_drm_subdrv_unregister); | |
9084f7b8 JS |
178 | |
179 | int exynos_drm_subdrv_open(struct drm_device *dev, struct drm_file *file) | |
180 | { | |
181 | struct exynos_drm_subdrv *subdrv; | |
182 | int ret; | |
183 | ||
184 | list_for_each_entry(subdrv, &exynos_drm_subdrv_list, list) { | |
185 | if (subdrv->open) { | |
677e84c1 | 186 | ret = subdrv->open(dev, subdrv->dev, file); |
9084f7b8 JS |
187 | if (ret) |
188 | goto err; | |
189 | } | |
190 | } | |
191 | ||
192 | return 0; | |
193 | ||
194 | err: | |
195 | list_for_each_entry_reverse(subdrv, &subdrv->list, list) { | |
196 | if (subdrv->close) | |
677e84c1 | 197 | subdrv->close(dev, subdrv->dev, file); |
9084f7b8 JS |
198 | } |
199 | return ret; | |
200 | } | |
201 | EXPORT_SYMBOL_GPL(exynos_drm_subdrv_open); | |
202 | ||
203 | void exynos_drm_subdrv_close(struct drm_device *dev, struct drm_file *file) | |
204 | { | |
205 | struct exynos_drm_subdrv *subdrv; | |
206 | ||
207 | list_for_each_entry(subdrv, &exynos_drm_subdrv_list, list) { | |
208 | if (subdrv->close) | |
677e84c1 | 209 | subdrv->close(dev, subdrv->dev, file); |
9084f7b8 JS |
210 | } |
211 | } | |
212 | EXPORT_SYMBOL_GPL(exynos_drm_subdrv_close); |