1 /*
2 * Copyright (c) 2011 Samsung Electronics Co., Ltd.
3 * Authors:
4 * Inki Dae <inki.dae@samsung.com>
5 * Joonyoung Shim <jy0922.shim@samsung.com>
6 * Seung-Woo Kim <sw0312.kim@samsung.com>
7 *
8 * Permission is hereby granted, free of charge, to any person obtaining a
9 * copy of this software and associated documentation files (the "Software"),
10 * to deal in the Software without restriction, including without limitation
11 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
12 * and/or sell copies of the Software, and to permit persons to whom the
13 * Software is furnished to do so, subject to the following conditions:
14 *
15 * The above copyright notice and this permission notice (including the next
16 * paragraph) shall be included in all copies or substantial portions of the
17 * Software.
18 *
19 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
20 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
21 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
22 * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
23 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
24 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
25 * OTHER DEALINGS IN THE SOFTWARE.
26 */
27
28 #include "drmP.h"
29 #include "drm.h"
30 #include "drm_crtc_helper.h"
31
32 #include <drm/exynos_drm.h>
33
34 #include "exynos_drm_drv.h"
35 #include "exynos_drm_crtc.h"
36 #include "exynos_drm_encoder.h"
37 #include "exynos_drm_fbdev.h"
38 #include "exynos_drm_fb.h"
39 #include "exynos_drm_gem.h"
40 #include "exynos_drm_plane.h"
41
42 #define DRIVER_NAME "exynos"
43 #define DRIVER_DESC "Samsung SoC DRM"
44 #define DRIVER_DATE "20110530"
45 #define DRIVER_MAJOR 1
46 #define DRIVER_MINOR 0
47
48 #define VBLANK_OFF_DELAY 50000
49
exynos_drm_load(struct drm_device * dev,unsigned long flags)50 static int exynos_drm_load(struct drm_device *dev, unsigned long flags)
51 {
52 struct exynos_drm_private *private;
53 int ret;
54 int nr;
55
56 DRM_DEBUG_DRIVER("%s\n", __FILE__);
57
58 private = kzalloc(sizeof(struct exynos_drm_private), GFP_KERNEL);
59 if (!private) {
60 DRM_ERROR("failed to allocate private\n");
61 return -ENOMEM;
62 }
63
64 INIT_LIST_HEAD(&private->pageflip_event_list);
65 dev->dev_private = (void *)private;
66
67 drm_mode_config_init(dev);
68
69 /* init kms poll for handling hpd */
70 drm_kms_helper_poll_init(dev);
71
72 exynos_drm_mode_config_init(dev);
73
74 /*
75 * EXYNOS4 is enough to have two CRTCs and each crtc would be used
76 * without dependency of hardware.
77 */
78 for (nr = 0; nr < MAX_CRTC; nr++) {
79 ret = exynos_drm_crtc_create(dev, nr);
80 if (ret)
81 goto err_crtc;
82 }
83
84 for (nr = 0; nr < MAX_PLANE; nr++) {
85 ret = exynos_plane_init(dev, nr);
86 if (ret)
87 goto err_crtc;
88 }
89
90 ret = drm_vblank_init(dev, MAX_CRTC);
91 if (ret)
92 goto err_crtc;
93
94 /*
95 * probe sub drivers such as display controller and hdmi driver,
96 * that were registered at probe() of platform driver
97 * to the sub driver and create encoder and connector for them.
98 */
99 ret = exynos_drm_device_register(dev);
100 if (ret)
101 goto err_vblank;
102
103 /* setup possible_clones. */
104 exynos_drm_encoder_setup(dev);
105
106 /*
107 * create and configure fb helper and also exynos specific
108 * fbdev object.
109 */
110 ret = exynos_drm_fbdev_init(dev);
111 if (ret) {
112 DRM_ERROR("failed to initialize drm fbdev\n");
113 goto err_drm_device;
114 }
115
116 drm_vblank_offdelay = VBLANK_OFF_DELAY;
117
118 return 0;
119
120 err_drm_device:
121 exynos_drm_device_unregister(dev);
122 err_vblank:
123 drm_vblank_cleanup(dev);
124 err_crtc:
125 drm_mode_config_cleanup(dev);
126 kfree(private);
127
128 return ret;
129 }
130
exynos_drm_unload(struct drm_device * dev)131 static int exynos_drm_unload(struct drm_device *dev)
132 {
133 DRM_DEBUG_DRIVER("%s\n", __FILE__);
134
135 exynos_drm_fbdev_fini(dev);
136 exynos_drm_device_unregister(dev);
137 drm_vblank_cleanup(dev);
138 drm_kms_helper_poll_fini(dev);
139 drm_mode_config_cleanup(dev);
140 kfree(dev->dev_private);
141
142 dev->dev_private = NULL;
143
144 return 0;
145 }
146
exynos_drm_preclose(struct drm_device * dev,struct drm_file * file)147 static void exynos_drm_preclose(struct drm_device *dev,
148 struct drm_file *file)
149 {
150 DRM_DEBUG_DRIVER("%s\n", __FILE__);
151
152 }
153
exynos_drm_postclose(struct drm_device * dev,struct drm_file * file)154 static void exynos_drm_postclose(struct drm_device *dev, struct drm_file *file)
155 {
156 DRM_DEBUG_DRIVER("%s\n", __FILE__);
157
158 if (!file->driver_priv)
159 return;
160
161 kfree(file->driver_priv);
162 file->driver_priv = NULL;
163 }
164
exynos_drm_lastclose(struct drm_device * dev)165 static void exynos_drm_lastclose(struct drm_device *dev)
166 {
167 DRM_DEBUG_DRIVER("%s\n", __FILE__);
168
169 exynos_drm_fbdev_restore_mode(dev);
170 }
171
172 static struct vm_operations_struct exynos_drm_gem_vm_ops = {
173 .fault = exynos_drm_gem_fault,
174 .open = drm_gem_vm_open,
175 .close = drm_gem_vm_close,
176 };
177
178 static struct drm_ioctl_desc exynos_ioctls[] = {
179 DRM_IOCTL_DEF_DRV(EXYNOS_GEM_CREATE, exynos_drm_gem_create_ioctl,
180 DRM_UNLOCKED | DRM_AUTH),
181 DRM_IOCTL_DEF_DRV(EXYNOS_GEM_MAP_OFFSET,
182 exynos_drm_gem_map_offset_ioctl, DRM_UNLOCKED |
183 DRM_AUTH),
184 DRM_IOCTL_DEF_DRV(EXYNOS_GEM_MMAP,
185 exynos_drm_gem_mmap_ioctl, DRM_UNLOCKED | DRM_AUTH),
186 DRM_IOCTL_DEF_DRV(EXYNOS_PLANE_SET_ZPOS, exynos_plane_set_zpos_ioctl,
187 DRM_UNLOCKED | DRM_AUTH),
188 };
189
190 static const struct file_operations exynos_drm_driver_fops = {
191 .owner = THIS_MODULE,
192 .open = drm_open,
193 .mmap = exynos_drm_gem_mmap,
194 .poll = drm_poll,
195 .read = drm_read,
196 .unlocked_ioctl = drm_ioctl,
197 .release = drm_release,
198 };
199
200 static struct drm_driver exynos_drm_driver = {
201 .driver_features = DRIVER_HAVE_IRQ | DRIVER_BUS_PLATFORM |
202 DRIVER_MODESET | DRIVER_GEM,
203 .load = exynos_drm_load,
204 .unload = exynos_drm_unload,
205 .preclose = exynos_drm_preclose,
206 .lastclose = exynos_drm_lastclose,
207 .postclose = exynos_drm_postclose,
208 .get_vblank_counter = drm_vblank_count,
209 .enable_vblank = exynos_drm_crtc_enable_vblank,
210 .disable_vblank = exynos_drm_crtc_disable_vblank,
211 .gem_init_object = exynos_drm_gem_init_object,
212 .gem_free_object = exynos_drm_gem_free_object,
213 .gem_vm_ops = &exynos_drm_gem_vm_ops,
214 .dumb_create = exynos_drm_gem_dumb_create,
215 .dumb_map_offset = exynos_drm_gem_dumb_map_offset,
216 .dumb_destroy = exynos_drm_gem_dumb_destroy,
217 .ioctls = exynos_ioctls,
218 .fops = &exynos_drm_driver_fops,
219 .name = DRIVER_NAME,
220 .desc = DRIVER_DESC,
221 .date = DRIVER_DATE,
222 .major = DRIVER_MAJOR,
223 .minor = DRIVER_MINOR,
224 };
225
exynos_drm_platform_probe(struct platform_device * pdev)226 static int exynos_drm_platform_probe(struct platform_device *pdev)
227 {
228 DRM_DEBUG_DRIVER("%s\n", __FILE__);
229
230 exynos_drm_driver.num_ioctls = DRM_ARRAY_SIZE(exynos_ioctls);
231
232 return drm_platform_init(&exynos_drm_driver, pdev);
233 }
234
exynos_drm_platform_remove(struct platform_device * pdev)235 static int exynos_drm_platform_remove(struct platform_device *pdev)
236 {
237 DRM_DEBUG_DRIVER("%s\n", __FILE__);
238
239 drm_platform_exit(&exynos_drm_driver, pdev);
240
241 return 0;
242 }
243
244 static struct platform_driver exynos_drm_platform_driver = {
245 .probe = exynos_drm_platform_probe,
246 .remove = __devexit_p(exynos_drm_platform_remove),
247 .driver = {
248 .owner = THIS_MODULE,
249 .name = "exynos-drm",
250 },
251 };
252
exynos_drm_init(void)253 static int __init exynos_drm_init(void)
254 {
255 DRM_DEBUG_DRIVER("%s\n", __FILE__);
256
257 return platform_driver_register(&exynos_drm_platform_driver);
258 }
259
exynos_drm_exit(void)260 static void __exit exynos_drm_exit(void)
261 {
262 DRM_DEBUG_DRIVER("%s\n", __FILE__);
263
264 platform_driver_unregister(&exynos_drm_platform_driver);
265 }
266
267 module_init(exynos_drm_init);
268 module_exit(exynos_drm_exit);
269
270 MODULE_AUTHOR("Inki Dae <inki.dae@samsung.com>");
271 MODULE_AUTHOR("Joonyoung Shim <jy0922.shim@samsung.com>");
272 MODULE_AUTHOR("Seung-Woo Kim <sw0312.kim@samsung.com>");
273 MODULE_DESCRIPTION("Samsung SoC DRM Driver");
274 MODULE_LICENSE("GPL");
275