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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 ID |
29 | |
30 | DRM_DEBUG_DRIVER("%s\n", __FILE__); | |
31 | ||
677e84c1 JS |
32 | subdrv->manager->dev = subdrv->dev; |
33 | ||
1c248b7d | 34 | /* create and initialize a encoder for this sub driver. */ |
677e84c1 | 35 | encoder = exynos_drm_encoder_create(dev, subdrv->manager, |
1c248b7d ID |
36 | (1 << MAX_CRTC) - 1); |
37 | if (!encoder) { | |
38 | DRM_ERROR("failed to create encoder\n"); | |
39 | return -EFAULT; | |
40 | } | |
41 | ||
42 | /* | |
43 | * create and initialize a connector for this sub driver and | |
44 | * attach the encoder created above to the connector. | |
45 | */ | |
46 | connector = exynos_drm_connector_create(dev, encoder); | |
47 | if (!connector) { | |
48 | DRM_ERROR("failed to create connector\n"); | |
41fecf3e ID |
49 | ret = -EFAULT; |
50 | goto err_destroy_encoder; | |
1c248b7d ID |
51 | } |
52 | ||
53 | subdrv->encoder = encoder; | |
54 | subdrv->connector = connector; | |
55 | ||
56 | return 0; | |
41fecf3e ID |
57 | |
58 | err_destroy_encoder: | |
59 | encoder->funcs->destroy(encoder); | |
60 | return ret; | |
1c248b7d ID |
61 | } |
62 | ||
41fecf3e | 63 | static void exynos_drm_destroy_enc_conn(struct exynos_drm_subdrv *subdrv) |
1c248b7d | 64 | { |
1c248b7d ID |
65 | if (subdrv->encoder) { |
66 | struct drm_encoder *encoder = subdrv->encoder; | |
67 | encoder->funcs->destroy(encoder); | |
68 | subdrv->encoder = NULL; | |
69 | } | |
70 | ||
71 | if (subdrv->connector) { | |
72 | struct drm_connector *connector = subdrv->connector; | |
73 | connector->funcs->destroy(connector); | |
74 | subdrv->connector = NULL; | |
75 | } | |
76 | } | |
77 | ||
41fecf3e ID |
78 | static int exynos_drm_subdrv_probe(struct drm_device *dev, |
79 | struct exynos_drm_subdrv *subdrv) | |
80 | { | |
81 | if (subdrv->probe) { | |
82 | int ret; | |
83 | ||
84 | subdrv->drm_dev = dev; | |
85 | ||
86 | /* | |
87 | * this probe callback would be called by sub driver | |
88 | * after setting of all resources to this sub driver, | |
89 | * such as clock, irq and register map are done or by load() | |
90 | * of exynos drm driver. | |
91 | * | |
92 | * P.S. note that this driver is considered for modularization. | |
93 | */ | |
94 | ret = subdrv->probe(dev, subdrv->dev); | |
95 | if (ret) | |
96 | return ret; | |
97 | } | |
98 | ||
99 | return 0; | |
100 | } | |
101 | ||
102 | static void exynos_drm_subdrv_remove(struct drm_device *dev, | |
103 | struct exynos_drm_subdrv *subdrv) | |
104 | { | |
105 | DRM_DEBUG_DRIVER("%s\n", __FILE__); | |
106 | ||
107 | if (subdrv->remove) | |
108 | subdrv->remove(dev, subdrv->dev); | |
109 | } | |
110 | ||
1c248b7d ID |
111 | int exynos_drm_device_register(struct drm_device *dev) |
112 | { | |
113 | struct exynos_drm_subdrv *subdrv, *n; | |
41fecf3e | 114 | unsigned int fine_cnt = 0; |
1c248b7d ID |
115 | int err; |
116 | ||
117 | DRM_DEBUG_DRIVER("%s\n", __FILE__); | |
118 | ||
119 | if (!dev) | |
120 | return -EINVAL; | |
121 | ||
1c248b7d ID |
122 | list_for_each_entry_safe(subdrv, n, &exynos_drm_subdrv_list, list) { |
123 | err = exynos_drm_subdrv_probe(dev, subdrv); | |
124 | if (err) { | |
125 | DRM_DEBUG("exynos drm subdrv probe failed.\n"); | |
126 | list_del(&subdrv->list); | |
41fecf3e ID |
127 | continue; |
128 | } | |
129 | ||
130 | /* | |
131 | * if manager is null then it means that this sub driver | |
132 | * doesn't need encoder and connector. | |
133 | */ | |
134 | if (!subdrv->manager) { | |
135 | fine_cnt++; | |
136 | continue; | |
137 | } | |
138 | ||
139 | err = exynos_drm_create_enc_conn(dev, subdrv); | |
140 | if (err) { | |
141 | DRM_DEBUG("failed to create encoder and connector.\n"); | |
142 | exynos_drm_subdrv_remove(dev, subdrv); | |
143 | list_del(&subdrv->list); | |
144 | continue; | |
1c248b7d | 145 | } |
41fecf3e ID |
146 | |
147 | fine_cnt++; | |
1c248b7d ID |
148 | } |
149 | ||
41fecf3e ID |
150 | if (!fine_cnt) |
151 | return -EINVAL; | |
152 | ||
1c248b7d ID |
153 | return 0; |
154 | } | |
155 | EXPORT_SYMBOL_GPL(exynos_drm_device_register); | |
156 | ||
157 | int exynos_drm_device_unregister(struct drm_device *dev) | |
158 | { | |
159 | struct exynos_drm_subdrv *subdrv; | |
160 | ||
161 | DRM_DEBUG_DRIVER("%s\n", __FILE__); | |
162 | ||
132a5b91 | 163 | if (!dev) { |
1c248b7d ID |
164 | WARN(1, "Unexpected drm device unregister!\n"); |
165 | return -EINVAL; | |
166 | } | |
167 | ||
41fecf3e | 168 | list_for_each_entry(subdrv, &exynos_drm_subdrv_list, list) { |
1c248b7d | 169 | exynos_drm_subdrv_remove(dev, subdrv); |
41fecf3e ID |
170 | exynos_drm_destroy_enc_conn(subdrv); |
171 | } | |
1c248b7d | 172 | |
1c248b7d ID |
173 | return 0; |
174 | } | |
175 | EXPORT_SYMBOL_GPL(exynos_drm_device_unregister); | |
176 | ||
1c248b7d ID |
177 | int exynos_drm_subdrv_register(struct exynos_drm_subdrv *subdrv) |
178 | { | |
1c248b7d ID |
179 | DRM_DEBUG_DRIVER("%s\n", __FILE__); |
180 | ||
181 | if (!subdrv) | |
182 | return -EINVAL; | |
183 | ||
1c248b7d | 184 | list_add_tail(&subdrv->list, &exynos_drm_subdrv_list); |
1c248b7d ID |
185 | |
186 | return 0; | |
187 | } | |
188 | EXPORT_SYMBOL_GPL(exynos_drm_subdrv_register); | |
189 | ||
190 | int exynos_drm_subdrv_unregister(struct exynos_drm_subdrv *subdrv) | |
191 | { | |
1c248b7d ID |
192 | DRM_DEBUG_DRIVER("%s\n", __FILE__); |
193 | ||
132a5b91 JS |
194 | if (!subdrv) |
195 | return -EINVAL; | |
1c248b7d | 196 | |
132a5b91 | 197 | list_del(&subdrv->list); |
1c248b7d | 198 | |
132a5b91 | 199 | return 0; |
1c248b7d ID |
200 | } |
201 | EXPORT_SYMBOL_GPL(exynos_drm_subdrv_unregister); | |
9084f7b8 JS |
202 | |
203 | int exynos_drm_subdrv_open(struct drm_device *dev, struct drm_file *file) | |
204 | { | |
205 | struct exynos_drm_subdrv *subdrv; | |
206 | int ret; | |
207 | ||
208 | list_for_each_entry(subdrv, &exynos_drm_subdrv_list, list) { | |
209 | if (subdrv->open) { | |
677e84c1 | 210 | ret = subdrv->open(dev, subdrv->dev, file); |
9084f7b8 JS |
211 | if (ret) |
212 | goto err; | |
213 | } | |
214 | } | |
215 | ||
216 | return 0; | |
217 | ||
218 | err: | |
219 | list_for_each_entry_reverse(subdrv, &subdrv->list, list) { | |
220 | if (subdrv->close) | |
677e84c1 | 221 | subdrv->close(dev, subdrv->dev, file); |
9084f7b8 JS |
222 | } |
223 | return ret; | |
224 | } | |
225 | EXPORT_SYMBOL_GPL(exynos_drm_subdrv_open); | |
226 | ||
227 | void exynos_drm_subdrv_close(struct drm_device *dev, struct drm_file *file) | |
228 | { | |
229 | struct exynos_drm_subdrv *subdrv; | |
230 | ||
231 | list_for_each_entry(subdrv, &exynos_drm_subdrv_list, list) { | |
232 | if (subdrv->close) | |
677e84c1 | 233 | subdrv->close(dev, subdrv->dev, file); |
9084f7b8 JS |
234 | } |
235 | } | |
236 | EXPORT_SYMBOL_GPL(exynos_drm_subdrv_close); |