Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux
[~shefty/rdma-dev.git] / drivers / gpu / drm / exynos / exynos_drm_drv.c
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 #include "exynos_drm_vidi.h"
42
43 #define DRIVER_NAME     "exynos"
44 #define DRIVER_DESC     "Samsung SoC DRM"
45 #define DRIVER_DATE     "20110530"
46 #define DRIVER_MAJOR    1
47 #define DRIVER_MINOR    0
48
49 #define VBLANK_OFF_DELAY        50000
50
51 static int exynos_drm_load(struct drm_device *dev, unsigned long flags)
52 {
53         struct exynos_drm_private *private;
54         int ret;
55         int nr;
56
57         DRM_DEBUG_DRIVER("%s\n", __FILE__);
58
59         private = kzalloc(sizeof(struct exynos_drm_private), GFP_KERNEL);
60         if (!private) {
61                 DRM_ERROR("failed to allocate private\n");
62                 return -ENOMEM;
63         }
64
65         INIT_LIST_HEAD(&private->pageflip_event_list);
66         dev->dev_private = (void *)private;
67
68         drm_mode_config_init(dev);
69
70         /* init kms poll for handling hpd */
71         drm_kms_helper_poll_init(dev);
72
73         exynos_drm_mode_config_init(dev);
74
75         /*
76          * EXYNOS4 is enough to have two CRTCs and each crtc would be used
77          * without dependency of hardware.
78          */
79         for (nr = 0; nr < MAX_CRTC; nr++) {
80                 ret = exynos_drm_crtc_create(dev, nr);
81                 if (ret)
82                         goto err_crtc;
83         }
84
85         for (nr = 0; nr < MAX_PLANE; nr++) {
86                 ret = exynos_plane_init(dev, nr);
87                 if (ret)
88                         goto err_crtc;
89         }
90
91         ret = drm_vblank_init(dev, MAX_CRTC);
92         if (ret)
93                 goto err_crtc;
94
95         /*
96          * probe sub drivers such as display controller and hdmi driver,
97          * that were registered at probe() of platform driver
98          * to the sub driver and create encoder and connector for them.
99          */
100         ret = exynos_drm_device_register(dev);
101         if (ret)
102                 goto err_vblank;
103
104         /* setup possible_clones. */
105         exynos_drm_encoder_setup(dev);
106
107         /*
108          * create and configure fb helper and also exynos specific
109          * fbdev object.
110          */
111         ret = exynos_drm_fbdev_init(dev);
112         if (ret) {
113                 DRM_ERROR("failed to initialize drm fbdev\n");
114                 goto err_drm_device;
115         }
116
117         drm_vblank_offdelay = VBLANK_OFF_DELAY;
118
119         return 0;
120
121 err_drm_device:
122         exynos_drm_device_unregister(dev);
123 err_vblank:
124         drm_vblank_cleanup(dev);
125 err_crtc:
126         drm_mode_config_cleanup(dev);
127         kfree(private);
128
129         return ret;
130 }
131
132 static int exynos_drm_unload(struct drm_device *dev)
133 {
134         DRM_DEBUG_DRIVER("%s\n", __FILE__);
135
136         exynos_drm_fbdev_fini(dev);
137         exynos_drm_device_unregister(dev);
138         drm_vblank_cleanup(dev);
139         drm_kms_helper_poll_fini(dev);
140         drm_mode_config_cleanup(dev);
141         kfree(dev->dev_private);
142
143         dev->dev_private = NULL;
144
145         return 0;
146 }
147
148 static int exynos_drm_open(struct drm_device *dev, struct drm_file *file)
149 {
150         DRM_DEBUG_DRIVER("%s\n", __FILE__);
151
152         return exynos_drm_subdrv_open(dev, file);
153 }
154
155 static void exynos_drm_preclose(struct drm_device *dev,
156                                         struct drm_file *file)
157 {
158         struct exynos_drm_private *private = dev->dev_private;
159         struct drm_pending_vblank_event *e, *t;
160         unsigned long flags;
161
162         DRM_DEBUG_DRIVER("%s\n", __FILE__);
163
164         /* release events of current file */
165         spin_lock_irqsave(&dev->event_lock, flags);
166         list_for_each_entry_safe(e, t, &private->pageflip_event_list,
167                         base.link) {
168                 if (e->base.file_priv == file) {
169                         list_del(&e->base.link);
170                         e->base.destroy(&e->base);
171                 }
172         }
173         spin_unlock_irqrestore(&dev->event_lock, flags);
174
175         exynos_drm_subdrv_close(dev, file);
176 }
177
178 static void exynos_drm_postclose(struct drm_device *dev, struct drm_file *file)
179 {
180         DRM_DEBUG_DRIVER("%s\n", __FILE__);
181
182         if (!file->driver_priv)
183                 return;
184
185         kfree(file->driver_priv);
186         file->driver_priv = NULL;
187 }
188
189 static void exynos_drm_lastclose(struct drm_device *dev)
190 {
191         DRM_DEBUG_DRIVER("%s\n", __FILE__);
192
193         exynos_drm_fbdev_restore_mode(dev);
194 }
195
196 static struct vm_operations_struct exynos_drm_gem_vm_ops = {
197         .fault = exynos_drm_gem_fault,
198         .open = drm_gem_vm_open,
199         .close = drm_gem_vm_close,
200 };
201
202 static struct drm_ioctl_desc exynos_ioctls[] = {
203         DRM_IOCTL_DEF_DRV(EXYNOS_GEM_CREATE, exynos_drm_gem_create_ioctl,
204                         DRM_UNLOCKED | DRM_AUTH),
205         DRM_IOCTL_DEF_DRV(EXYNOS_GEM_MAP_OFFSET,
206                         exynos_drm_gem_map_offset_ioctl, DRM_UNLOCKED |
207                         DRM_AUTH),
208         DRM_IOCTL_DEF_DRV(EXYNOS_GEM_MMAP,
209                         exynos_drm_gem_mmap_ioctl, DRM_UNLOCKED | DRM_AUTH),
210         DRM_IOCTL_DEF_DRV(EXYNOS_PLANE_SET_ZPOS, exynos_plane_set_zpos_ioctl,
211                         DRM_UNLOCKED | DRM_AUTH),
212         DRM_IOCTL_DEF_DRV(EXYNOS_VIDI_CONNECTION,
213                         vidi_connection_ioctl, DRM_UNLOCKED | DRM_AUTH),
214 };
215
216 static const struct file_operations exynos_drm_driver_fops = {
217         .owner          = THIS_MODULE,
218         .open           = drm_open,
219         .mmap           = exynos_drm_gem_mmap,
220         .poll           = drm_poll,
221         .read           = drm_read,
222         .unlocked_ioctl = drm_ioctl,
223         .release        = drm_release,
224 };
225
226 static struct drm_driver exynos_drm_driver = {
227         .driver_features        = DRIVER_HAVE_IRQ | DRIVER_BUS_PLATFORM |
228                                   DRIVER_MODESET | DRIVER_GEM,
229         .load                   = exynos_drm_load,
230         .unload                 = exynos_drm_unload,
231         .open                   = exynos_drm_open,
232         .preclose               = exynos_drm_preclose,
233         .lastclose              = exynos_drm_lastclose,
234         .postclose              = exynos_drm_postclose,
235         .get_vblank_counter     = drm_vblank_count,
236         .enable_vblank          = exynos_drm_crtc_enable_vblank,
237         .disable_vblank         = exynos_drm_crtc_disable_vblank,
238         .gem_init_object        = exynos_drm_gem_init_object,
239         .gem_free_object        = exynos_drm_gem_free_object,
240         .gem_vm_ops             = &exynos_drm_gem_vm_ops,
241         .dumb_create            = exynos_drm_gem_dumb_create,
242         .dumb_map_offset        = exynos_drm_gem_dumb_map_offset,
243         .dumb_destroy           = exynos_drm_gem_dumb_destroy,
244         .ioctls                 = exynos_ioctls,
245         .fops                   = &exynos_drm_driver_fops,
246         .name   = DRIVER_NAME,
247         .desc   = DRIVER_DESC,
248         .date   = DRIVER_DATE,
249         .major  = DRIVER_MAJOR,
250         .minor  = DRIVER_MINOR,
251 };
252
253 static int exynos_drm_platform_probe(struct platform_device *pdev)
254 {
255         DRM_DEBUG_DRIVER("%s\n", __FILE__);
256
257         exynos_drm_driver.num_ioctls = DRM_ARRAY_SIZE(exynos_ioctls);
258
259         return drm_platform_init(&exynos_drm_driver, pdev);
260 }
261
262 static int exynos_drm_platform_remove(struct platform_device *pdev)
263 {
264         DRM_DEBUG_DRIVER("%s\n", __FILE__);
265
266         drm_platform_exit(&exynos_drm_driver, pdev);
267
268         return 0;
269 }
270
271 static struct platform_driver exynos_drm_platform_driver = {
272         .probe          = exynos_drm_platform_probe,
273         .remove         = __devexit_p(exynos_drm_platform_remove),
274         .driver         = {
275                 .owner  = THIS_MODULE,
276                 .name   = "exynos-drm",
277         },
278 };
279
280 static int __init exynos_drm_init(void)
281 {
282         int ret;
283
284         DRM_DEBUG_DRIVER("%s\n", __FILE__);
285
286 #ifdef CONFIG_DRM_EXYNOS_FIMD
287         ret = platform_driver_register(&fimd_driver);
288         if (ret < 0)
289                 goto out_fimd;
290 #endif
291
292 #ifdef CONFIG_DRM_EXYNOS_HDMI
293         ret = platform_driver_register(&hdmi_driver);
294         if (ret < 0)
295                 goto out_hdmi;
296         ret = platform_driver_register(&mixer_driver);
297         if (ret < 0)
298                 goto out_mixer;
299         ret = platform_driver_register(&exynos_drm_common_hdmi_driver);
300         if (ret < 0)
301                 goto out_common_hdmi;
302 #endif
303
304 #ifdef CONFIG_DRM_EXYNOS_VIDI
305         ret = platform_driver_register(&vidi_driver);
306         if (ret < 0)
307                 goto out_vidi;
308 #endif
309
310         ret = platform_driver_register(&exynos_drm_platform_driver);
311         if (ret < 0)
312                 goto out;
313
314         return 0;
315
316 out:
317 #ifdef CONFIG_DRM_EXYNOS_VIDI
318 out_vidi:
319         platform_driver_unregister(&vidi_driver);
320 #endif
321
322 #ifdef CONFIG_DRM_EXYNOS_HDMI
323         platform_driver_unregister(&exynos_drm_common_hdmi_driver);
324 out_common_hdmi:
325         platform_driver_unregister(&mixer_driver);
326 out_mixer:
327         platform_driver_unregister(&hdmi_driver);
328 out_hdmi:
329 #endif
330
331 #ifdef CONFIG_DRM_EXYNOS_FIMD
332         platform_driver_unregister(&fimd_driver);
333 out_fimd:
334 #endif
335         return ret;
336 }
337
338 static void __exit exynos_drm_exit(void)
339 {
340         DRM_DEBUG_DRIVER("%s\n", __FILE__);
341
342         platform_driver_unregister(&exynos_drm_platform_driver);
343
344 #ifdef CONFIG_DRM_EXYNOS_HDMI
345         platform_driver_unregister(&exynos_drm_common_hdmi_driver);
346         platform_driver_unregister(&mixer_driver);
347         platform_driver_unregister(&hdmi_driver);
348 #endif
349
350 #ifdef CONFIG_DRM_EXYNOS_VIDI
351         platform_driver_unregister(&vidi_driver);
352 #endif
353
354 #ifdef CONFIG_DRM_EXYNOS_FIMD
355         platform_driver_unregister(&fimd_driver);
356 #endif
357 }
358
359 module_init(exynos_drm_init);
360 module_exit(exynos_drm_exit);
361
362 MODULE_AUTHOR("Inki Dae <inki.dae@samsung.com>");
363 MODULE_AUTHOR("Joonyoung Shim <jy0922.shim@samsung.com>");
364 MODULE_AUTHOR("Seung-Woo Kim <sw0312.kim@samsung.com>");
365 MODULE_DESCRIPTION("Samsung SoC DRM Driver");
366 MODULE_LICENSE("GPL");