Commit | Line | Data |
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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 | * | |
d81aecb5 ID |
9 | * This program is free software; you can redistribute it and/or modify it |
10 | * under the terms of the GNU General Public License as published by the | |
11 | * Free Software Foundation; either version 2 of the License, or (at your | |
12 | * option) any later version. | |
1c248b7d ID |
13 | */ |
14 | ||
760285e7 | 15 | #include <drm/drmP.h> |
1c248b7d ID |
16 | #include "exynos_drm_drv.h" |
17 | #include "exynos_drm_encoder.h" | |
18 | #include "exynos_drm_connector.h" | |
19 | #include "exynos_drm_fbdev.h" | |
20 | ||
1c248b7d | 21 | static LIST_HEAD(exynos_drm_subdrv_list); |
1c248b7d | 22 | |
41fecf3e | 23 | static int exynos_drm_create_enc_conn(struct drm_device *dev, |
1c248b7d ID |
24 | struct exynos_drm_subdrv *subdrv) |
25 | { | |
26 | struct drm_encoder *encoder; | |
27 | struct drm_connector *connector; | |
41fecf3e | 28 | int ret; |
1c248b7d | 29 | |
677e84c1 JS |
30 | subdrv->manager->dev = subdrv->dev; |
31 | ||
1c248b7d | 32 | /* create and initialize a encoder for this sub driver. */ |
677e84c1 | 33 | encoder = exynos_drm_encoder_create(dev, subdrv->manager, |
1c248b7d ID |
34 | (1 << MAX_CRTC) - 1); |
35 | if (!encoder) { | |
36 | DRM_ERROR("failed to create encoder\n"); | |
37 | return -EFAULT; | |
38 | } | |
39 | ||
40 | /* | |
41 | * create and initialize a connector for this sub driver and | |
42 | * attach the encoder created above to the connector. | |
43 | */ | |
44 | connector = exynos_drm_connector_create(dev, encoder); | |
45 | if (!connector) { | |
46 | DRM_ERROR("failed to create connector\n"); | |
41fecf3e ID |
47 | ret = -EFAULT; |
48 | goto err_destroy_encoder; | |
1c248b7d ID |
49 | } |
50 | ||
51 | subdrv->encoder = encoder; | |
52 | subdrv->connector = connector; | |
53 | ||
54 | return 0; | |
41fecf3e ID |
55 | |
56 | err_destroy_encoder: | |
57 | encoder->funcs->destroy(encoder); | |
58 | return ret; | |
1c248b7d ID |
59 | } |
60 | ||
41fecf3e | 61 | static void exynos_drm_destroy_enc_conn(struct exynos_drm_subdrv *subdrv) |
1c248b7d | 62 | { |
1c248b7d ID |
63 | if (subdrv->encoder) { |
64 | struct drm_encoder *encoder = subdrv->encoder; | |
65 | encoder->funcs->destroy(encoder); | |
66 | subdrv->encoder = NULL; | |
67 | } | |
68 | ||
69 | if (subdrv->connector) { | |
70 | struct drm_connector *connector = subdrv->connector; | |
71 | connector->funcs->destroy(connector); | |
72 | subdrv->connector = NULL; | |
73 | } | |
74 | } | |
75 | ||
41fecf3e ID |
76 | static int exynos_drm_subdrv_probe(struct drm_device *dev, |
77 | struct exynos_drm_subdrv *subdrv) | |
78 | { | |
79 | if (subdrv->probe) { | |
80 | int ret; | |
81 | ||
82 | subdrv->drm_dev = dev; | |
83 | ||
84 | /* | |
85 | * this probe callback would be called by sub driver | |
86 | * after setting of all resources to this sub driver, | |
87 | * such as clock, irq and register map are done or by load() | |
88 | * of exynos drm driver. | |
89 | * | |
90 | * P.S. note that this driver is considered for modularization. | |
91 | */ | |
92 | ret = subdrv->probe(dev, subdrv->dev); | |
93 | if (ret) | |
94 | return ret; | |
95 | } | |
96 | ||
97 | return 0; | |
98 | } | |
99 | ||
100 | static void exynos_drm_subdrv_remove(struct drm_device *dev, | |
101 | struct exynos_drm_subdrv *subdrv) | |
102 | { | |
41fecf3e ID |
103 | if (subdrv->remove) |
104 | subdrv->remove(dev, subdrv->dev); | |
105 | } | |
106 | ||
1c248b7d ID |
107 | int exynos_drm_device_register(struct drm_device *dev) |
108 | { | |
109 | struct exynos_drm_subdrv *subdrv, *n; | |
41fecf3e | 110 | unsigned int fine_cnt = 0; |
1c248b7d ID |
111 | int err; |
112 | ||
1c248b7d ID |
113 | if (!dev) |
114 | return -EINVAL; | |
115 | ||
1c248b7d ID |
116 | list_for_each_entry_safe(subdrv, n, &exynos_drm_subdrv_list, list) { |
117 | err = exynos_drm_subdrv_probe(dev, subdrv); | |
118 | if (err) { | |
119 | DRM_DEBUG("exynos drm subdrv probe failed.\n"); | |
120 | list_del(&subdrv->list); | |
41fecf3e ID |
121 | continue; |
122 | } | |
123 | ||
124 | /* | |
125 | * if manager is null then it means that this sub driver | |
126 | * doesn't need encoder and connector. | |
127 | */ | |
128 | if (!subdrv->manager) { | |
129 | fine_cnt++; | |
130 | continue; | |
131 | } | |
132 | ||
133 | err = exynos_drm_create_enc_conn(dev, subdrv); | |
134 | if (err) { | |
135 | DRM_DEBUG("failed to create encoder and connector.\n"); | |
136 | exynos_drm_subdrv_remove(dev, subdrv); | |
137 | list_del(&subdrv->list); | |
138 | continue; | |
1c248b7d | 139 | } |
41fecf3e ID |
140 | |
141 | fine_cnt++; | |
1c248b7d ID |
142 | } |
143 | ||
41fecf3e ID |
144 | if (!fine_cnt) |
145 | return -EINVAL; | |
146 | ||
1c248b7d ID |
147 | return 0; |
148 | } | |
149 | EXPORT_SYMBOL_GPL(exynos_drm_device_register); | |
150 | ||
151 | int exynos_drm_device_unregister(struct drm_device *dev) | |
152 | { | |
153 | struct exynos_drm_subdrv *subdrv; | |
154 | ||
132a5b91 | 155 | if (!dev) { |
1c248b7d ID |
156 | WARN(1, "Unexpected drm device unregister!\n"); |
157 | return -EINVAL; | |
158 | } | |
159 | ||
41fecf3e | 160 | list_for_each_entry(subdrv, &exynos_drm_subdrv_list, list) { |
1c248b7d | 161 | exynos_drm_subdrv_remove(dev, subdrv); |
41fecf3e ID |
162 | exynos_drm_destroy_enc_conn(subdrv); |
163 | } | |
1c248b7d | 164 | |
1c248b7d ID |
165 | return 0; |
166 | } | |
167 | EXPORT_SYMBOL_GPL(exynos_drm_device_unregister); | |
168 | ||
1c248b7d ID |
169 | int exynos_drm_subdrv_register(struct exynos_drm_subdrv *subdrv) |
170 | { | |
1c248b7d ID |
171 | if (!subdrv) |
172 | return -EINVAL; | |
173 | ||
1c248b7d | 174 | list_add_tail(&subdrv->list, &exynos_drm_subdrv_list); |
1c248b7d ID |
175 | |
176 | return 0; | |
177 | } | |
178 | EXPORT_SYMBOL_GPL(exynos_drm_subdrv_register); | |
179 | ||
180 | int exynos_drm_subdrv_unregister(struct exynos_drm_subdrv *subdrv) | |
181 | { | |
132a5b91 JS |
182 | if (!subdrv) |
183 | return -EINVAL; | |
1c248b7d | 184 | |
132a5b91 | 185 | list_del(&subdrv->list); |
1c248b7d | 186 | |
132a5b91 | 187 | return 0; |
1c248b7d ID |
188 | } |
189 | EXPORT_SYMBOL_GPL(exynos_drm_subdrv_unregister); | |
9084f7b8 JS |
190 | |
191 | int exynos_drm_subdrv_open(struct drm_device *dev, struct drm_file *file) | |
192 | { | |
193 | struct exynos_drm_subdrv *subdrv; | |
194 | int ret; | |
195 | ||
196 | list_for_each_entry(subdrv, &exynos_drm_subdrv_list, list) { | |
197 | if (subdrv->open) { | |
677e84c1 | 198 | ret = subdrv->open(dev, subdrv->dev, file); |
9084f7b8 JS |
199 | if (ret) |
200 | goto err; | |
201 | } | |
202 | } | |
203 | ||
204 | return 0; | |
205 | ||
206 | err: | |
207 | list_for_each_entry_reverse(subdrv, &subdrv->list, list) { | |
208 | if (subdrv->close) | |
677e84c1 | 209 | subdrv->close(dev, subdrv->dev, file); |
9084f7b8 JS |
210 | } |
211 | return ret; | |
212 | } | |
213 | EXPORT_SYMBOL_GPL(exynos_drm_subdrv_open); | |
214 | ||
215 | void exynos_drm_subdrv_close(struct drm_device *dev, struct drm_file *file) | |
216 | { | |
217 | struct exynos_drm_subdrv *subdrv; | |
218 | ||
219 | list_for_each_entry(subdrv, &exynos_drm_subdrv_list, list) { | |
220 | if (subdrv->close) | |
677e84c1 | 221 | subdrv->close(dev, subdrv->dev, file); |
9084f7b8 JS |
222 | } |
223 | } | |
224 | EXPORT_SYMBOL_GPL(exynos_drm_subdrv_close); |