tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of the GNU General Public License as published by the
10 * Free Software Foundation; either version 2 of the License, or (at your
11 * option) any later version.
12 */
13
14#include <drm/drmP.h>
15#include <drm/drm_crtc_helper.h>
16
17#include <drm/exynos_drm.h>
18
19#include "exynos_drm_drv.h"
20#include "exynos_drm_crtc.h"
21#include "exynos_drm_encoder.h"
22#include "exynos_drm_fbdev.h"
23#include "exynos_drm_fb.h"
24#include "exynos_drm_gem.h"
25#include "exynos_drm_plane.h"
26#include "exynos_drm_vidi.h"
27#include "exynos_drm_dmabuf.h"
28#include "exynos_drm_g2d.h"
29#include "exynos_drm_ipp.h"
30#include "exynos_drm_iommu.h"
31
32#define DRIVER_NAME "exynos"
33#define DRIVER_DESC "Samsung SoC DRM"
34#define DRIVER_DATE "20110530"
35#define DRIVER_MAJOR 1
36#define DRIVER_MINOR 0
37
38#define VBLANK_OFF_DELAY 50000
39
40/* platform device pointer for eynos drm device. */
41static struct platform_device *exynos_drm_pdev;
42
43static int exynos_drm_load(struct drm_device *dev, unsigned long flags)
44{
45 struct exynos_drm_private *private;
46 int ret;
47 int nr;
48
49 private = kzalloc(sizeof(struct exynos_drm_private), GFP_KERNEL);
50 if (!private)
51 return -ENOMEM;
52
53 INIT_LIST_HEAD(&private->pageflip_event_list);
54 dev->dev_private = (void *)private;
55
56 /*
57 * create mapping to manage iommu table and set a pointer to iommu
58 * mapping structure to iommu_mapping of private data.
59 * also this iommu_mapping can be used to check if iommu is supported
60 * or not.
61 */
62 ret = drm_create_iommu_mapping(dev);
63 if (ret < 0) {
64 DRM_ERROR("failed to create iommu mapping.\n");
65 goto err_crtc;
66 }
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_release_iommu_mapping;
83 }
84
85 for (nr = 0; nr < MAX_PLANE; nr++) {
86 struct drm_plane *plane;
87 unsigned int possible_crtcs = (1 << MAX_CRTC) - 1;
88
89 plane = exynos_plane_init(dev, possible_crtcs, false);
90 if (!plane)
91 goto err_release_iommu_mapping;
92 }
93
94 ret = drm_vblank_init(dev, MAX_CRTC);
95 if (ret)
96 goto err_release_iommu_mapping;
97
98 /*
99 * probe sub drivers such as display controller and hdmi driver,
100 * that were registered at probe() of platform driver
101 * to the sub driver and create encoder and connector for them.
102 */
103 ret = exynos_drm_device_register(dev);
104 if (ret)
105 goto err_vblank;
106
107 /* setup possible_clones. */
108 exynos_drm_encoder_setup(dev);
109
110 /*
111 * create and configure fb helper and also exynos specific
112 * fbdev object.
113 */
114 ret = exynos_drm_fbdev_init(dev);
115 if (ret) {
116 DRM_ERROR("failed to initialize drm fbdev\n");
117 goto err_drm_device;
118 }
119
120 drm_vblank_offdelay = VBLANK_OFF_DELAY;
121
122 return 0;
123
124err_drm_device:
125 exynos_drm_device_unregister(dev);
126err_vblank:
127 drm_vblank_cleanup(dev);
128err_release_iommu_mapping:
129 drm_release_iommu_mapping(dev);
130err_crtc:
131 drm_mode_config_cleanup(dev);
132 kfree(private);
133
134 return ret;
135}
136
137static int exynos_drm_unload(struct drm_device *dev)
138{
139 exynos_drm_fbdev_fini(dev);
140 exynos_drm_device_unregister(dev);
141 drm_vblank_cleanup(dev);
142 drm_kms_helper_poll_fini(dev);
143 drm_mode_config_cleanup(dev);
144
145 drm_release_iommu_mapping(dev);
146 kfree(dev->dev_private);
147
148 dev->dev_private = NULL;
149
150 return 0;
151}
152
153static int exynos_drm_open(struct drm_device *dev, struct drm_file *file)
154{
155 struct drm_exynos_file_private *file_priv;
156 int ret;
157
158 file_priv = kzalloc(sizeof(*file_priv), GFP_KERNEL);
159 if (!file_priv)
160 return -ENOMEM;
161
162 file->driver_priv = file_priv;
163
164 ret = exynos_drm_subdrv_open(dev, file);
165 if (ret) {
166 kfree(file_priv);
167 file->driver_priv = NULL;
168 }
169
170 return ret;
171}
172
173static void exynos_drm_preclose(struct drm_device *dev,
174 struct drm_file *file)
175{
176 struct exynos_drm_private *private = dev->dev_private;
177 struct drm_pending_vblank_event *e, *t;
178 unsigned long flags;
179
180 /* release events of current file */
181 spin_lock_irqsave(&dev->event_lock, flags);
182 list_for_each_entry_safe(e, t, &private->pageflip_event_list,
183 base.link) {
184 if (e->base.file_priv == file) {
185 list_del(&e->base.link);
186 e->base.destroy(&e->base);
187 }
188 }
189 spin_unlock_irqrestore(&dev->event_lock, flags);
190
191 exynos_drm_subdrv_close(dev, file);
192}
193
194static void exynos_drm_postclose(struct drm_device *dev, struct drm_file *file)
195{
196 if (!file->driver_priv)
197 return;
198
199 kfree(file->driver_priv);
200 file->driver_priv = NULL;
201}
202
203static void exynos_drm_lastclose(struct drm_device *dev)
204{
205 exynos_drm_fbdev_restore_mode(dev);
206}
207
208static const struct vm_operations_struct exynos_drm_gem_vm_ops = {
209 .fault = exynos_drm_gem_fault,
210 .open = drm_gem_vm_open,
211 .close = drm_gem_vm_close,
212};
213
214static const struct drm_ioctl_desc exynos_ioctls[] = {
215 DRM_IOCTL_DEF_DRV(EXYNOS_GEM_CREATE, exynos_drm_gem_create_ioctl,
216 DRM_UNLOCKED | DRM_AUTH),
217 DRM_IOCTL_DEF_DRV(EXYNOS_GEM_MAP_OFFSET,
218 exynos_drm_gem_map_offset_ioctl, DRM_UNLOCKED |
219 DRM_AUTH),
220 DRM_IOCTL_DEF_DRV(EXYNOS_GEM_MMAP,
221 exynos_drm_gem_mmap_ioctl, DRM_UNLOCKED | DRM_AUTH),
222 DRM_IOCTL_DEF_DRV(EXYNOS_GEM_GET,
223 exynos_drm_gem_get_ioctl, DRM_UNLOCKED),
224 DRM_IOCTL_DEF_DRV(EXYNOS_VIDI_CONNECTION,
225 vidi_connection_ioctl, DRM_UNLOCKED | DRM_AUTH),
226 DRM_IOCTL_DEF_DRV(EXYNOS_G2D_GET_VER,
227 exynos_g2d_get_ver_ioctl, DRM_UNLOCKED | DRM_AUTH),
228 DRM_IOCTL_DEF_DRV(EXYNOS_G2D_SET_CMDLIST,
229 exynos_g2d_set_cmdlist_ioctl, DRM_UNLOCKED | DRM_AUTH),
230 DRM_IOCTL_DEF_DRV(EXYNOS_G2D_EXEC,
231 exynos_g2d_exec_ioctl, DRM_UNLOCKED | DRM_AUTH),
232 DRM_IOCTL_DEF_DRV(EXYNOS_IPP_GET_PROPERTY,
233 exynos_drm_ipp_get_property, DRM_UNLOCKED | DRM_AUTH),
234 DRM_IOCTL_DEF_DRV(EXYNOS_IPP_SET_PROPERTY,
235 exynos_drm_ipp_set_property, DRM_UNLOCKED | DRM_AUTH),
236 DRM_IOCTL_DEF_DRV(EXYNOS_IPP_QUEUE_BUF,
237 exynos_drm_ipp_queue_buf, DRM_UNLOCKED | DRM_AUTH),
238 DRM_IOCTL_DEF_DRV(EXYNOS_IPP_CMD_CTRL,
239 exynos_drm_ipp_cmd_ctrl, DRM_UNLOCKED | DRM_AUTH),
240};
241
242static const struct file_operations exynos_drm_driver_fops = {
243 .owner = THIS_MODULE,
244 .open = drm_open,
245 .mmap = exynos_drm_gem_mmap,
246 .poll = drm_poll,
247 .read = drm_read,
248 .unlocked_ioctl = drm_ioctl,
249#ifdef CONFIG_COMPAT
250 .compat_ioctl = drm_compat_ioctl,
251#endif
252 .release = drm_release,
253};
254
255static struct drm_driver exynos_drm_driver = {
256 .driver_features = DRIVER_HAVE_IRQ | DRIVER_MODESET |
257 DRIVER_GEM | DRIVER_PRIME,
258 .load = exynos_drm_load,
259 .unload = exynos_drm_unload,
260 .open = exynos_drm_open,
261 .preclose = exynos_drm_preclose,
262 .lastclose = exynos_drm_lastclose,
263 .postclose = exynos_drm_postclose,
264 .get_vblank_counter = drm_vblank_count,
265 .enable_vblank = exynos_drm_crtc_enable_vblank,
266 .disable_vblank = exynos_drm_crtc_disable_vblank,
267 .gem_init_object = exynos_drm_gem_init_object,
268 .gem_free_object = exynos_drm_gem_free_object,
269 .gem_vm_ops = &exynos_drm_gem_vm_ops,
270 .dumb_create = exynos_drm_gem_dumb_create,
271 .dumb_map_offset = exynos_drm_gem_dumb_map_offset,
272 .dumb_destroy = drm_gem_dumb_destroy,
273 .prime_handle_to_fd = drm_gem_prime_handle_to_fd,
274 .prime_fd_to_handle = drm_gem_prime_fd_to_handle,
275 .gem_prime_export = exynos_dmabuf_prime_export,
276 .gem_prime_import = exynos_dmabuf_prime_import,
277 .ioctls = exynos_ioctls,
278 .num_ioctls = ARRAY_SIZE(exynos_ioctls),
279 .fops = &exynos_drm_driver_fops,
280 .name = DRIVER_NAME,
281 .desc = DRIVER_DESC,
282 .date = DRIVER_DATE,
283 .major = DRIVER_MAJOR,
284 .minor = DRIVER_MINOR,
285};
286
287static int exynos_drm_platform_probe(struct platform_device *pdev)
288{
289 pdev->dev.coherent_dma_mask = DMA_BIT_MASK(32);
290
291 return drm_platform_init(&exynos_drm_driver, pdev);
292}
293
294static int exynos_drm_platform_remove(struct platform_device *pdev)
295{
296 drm_platform_exit(&exynos_drm_driver, pdev);
297
298 return 0;
299}
300
301static struct platform_driver exynos_drm_platform_driver = {
302 .probe = exynos_drm_platform_probe,
303 .remove = exynos_drm_platform_remove,
304 .driver = {
305 .owner = THIS_MODULE,
306 .name = "exynos-drm",
307 },
308};
309
310static int __init exynos_drm_init(void)
311{
312 int ret;
313
314#ifdef CONFIG_DRM_EXYNOS_FIMD
315 ret = platform_driver_register(&fimd_driver);
316 if (ret < 0)
317 goto out_fimd;
318#endif
319
320#ifdef CONFIG_DRM_EXYNOS_HDMI
321 ret = platform_driver_register(&hdmi_driver);
322 if (ret < 0)
323 goto out_hdmi;
324 ret = platform_driver_register(&mixer_driver);
325 if (ret < 0)
326 goto out_mixer;
327 ret = platform_driver_register(&exynos_drm_common_hdmi_driver);
328 if (ret < 0)
329 goto out_common_hdmi;
330
331 ret = exynos_platform_device_hdmi_register();
332 if (ret < 0)
333 goto out_common_hdmi_dev;
334#endif
335
336#ifdef CONFIG_DRM_EXYNOS_VIDI
337 ret = platform_driver_register(&vidi_driver);
338 if (ret < 0)
339 goto out_vidi;
340#endif
341
342#ifdef CONFIG_DRM_EXYNOS_G2D
343 ret = platform_driver_register(&g2d_driver);
344 if (ret < 0)
345 goto out_g2d;
346#endif
347
348#ifdef CONFIG_DRM_EXYNOS_FIMC
349 ret = platform_driver_register(&fimc_driver);
350 if (ret < 0)
351 goto out_fimc;
352#endif
353
354#ifdef CONFIG_DRM_EXYNOS_ROTATOR
355 ret = platform_driver_register(&rotator_driver);
356 if (ret < 0)
357 goto out_rotator;
358#endif
359
360#ifdef CONFIG_DRM_EXYNOS_GSC
361 ret = platform_driver_register(&gsc_driver);
362 if (ret < 0)
363 goto out_gsc;
364#endif
365
366#ifdef CONFIG_DRM_EXYNOS_IPP
367 ret = platform_driver_register(&ipp_driver);
368 if (ret < 0)
369 goto out_ipp;
370
371 ret = exynos_platform_device_ipp_register();
372 if (ret < 0)
373 goto out_ipp_dev;
374#endif
375
376 ret = platform_driver_register(&exynos_drm_platform_driver);
377 if (ret < 0)
378 goto out_drm;
379
380 exynos_drm_pdev = platform_device_register_simple("exynos-drm", -1,
381 NULL, 0);
382 if (IS_ERR(exynos_drm_pdev)) {
383 ret = PTR_ERR(exynos_drm_pdev);
384 goto out;
385 }
386
387 return 0;
388
389out:
390 platform_driver_unregister(&exynos_drm_platform_driver);
391
392out_drm:
393#ifdef CONFIG_DRM_EXYNOS_IPP
394 exynos_platform_device_ipp_unregister();
395out_ipp_dev:
396 platform_driver_unregister(&ipp_driver);
397out_ipp:
398#endif
399
400#ifdef CONFIG_DRM_EXYNOS_GSC
401 platform_driver_unregister(&gsc_driver);
402out_gsc:
403#endif
404
405#ifdef CONFIG_DRM_EXYNOS_ROTATOR
406 platform_driver_unregister(&rotator_driver);
407out_rotator:
408#endif
409
410#ifdef CONFIG_DRM_EXYNOS_FIMC
411 platform_driver_unregister(&fimc_driver);
412out_fimc:
413#endif
414
415#ifdef CONFIG_DRM_EXYNOS_G2D
416 platform_driver_unregister(&g2d_driver);
417out_g2d:
418#endif
419
420#ifdef CONFIG_DRM_EXYNOS_VIDI
421 platform_driver_unregister(&vidi_driver);
422out_vidi:
423#endif
424
425#ifdef CONFIG_DRM_EXYNOS_HDMI
426 exynos_platform_device_hdmi_unregister();
427out_common_hdmi_dev:
428 platform_driver_unregister(&exynos_drm_common_hdmi_driver);
429out_common_hdmi:
430 platform_driver_unregister(&mixer_driver);
431out_mixer:
432 platform_driver_unregister(&hdmi_driver);
433out_hdmi:
434#endif
435
436#ifdef CONFIG_DRM_EXYNOS_FIMD
437 platform_driver_unregister(&fimd_driver);
438out_fimd:
439#endif
440 return ret;
441}
442
443static void __exit exynos_drm_exit(void)
444{
445 platform_device_unregister(exynos_drm_pdev);
446
447 platform_driver_unregister(&exynos_drm_platform_driver);
448
449#ifdef CONFIG_DRM_EXYNOS_IPP
450 exynos_platform_device_ipp_unregister();
451 platform_driver_unregister(&ipp_driver);
452#endif
453
454#ifdef CONFIG_DRM_EXYNOS_GSC
455 platform_driver_unregister(&gsc_driver);
456#endif
457
458#ifdef CONFIG_DRM_EXYNOS_ROTATOR
459 platform_driver_unregister(&rotator_driver);
460#endif
461
462#ifdef CONFIG_DRM_EXYNOS_FIMC
463 platform_driver_unregister(&fimc_driver);
464#endif
465
466#ifdef CONFIG_DRM_EXYNOS_G2D
467 platform_driver_unregister(&g2d_driver);
468#endif
469
470#ifdef CONFIG_DRM_EXYNOS_HDMI
471 exynos_platform_device_hdmi_unregister();
472 platform_driver_unregister(&exynos_drm_common_hdmi_driver);
473 platform_driver_unregister(&mixer_driver);
474 platform_driver_unregister(&hdmi_driver);
475#endif
476
477#ifdef CONFIG_DRM_EXYNOS_VIDI
478 platform_driver_unregister(&vidi_driver);
479#endif
480
481#ifdef CONFIG_DRM_EXYNOS_FIMD
482 platform_driver_unregister(&fimd_driver);
483#endif
484}
485
486module_init(exynos_drm_init);
487module_exit(exynos_drm_exit);
488
489MODULE_AUTHOR("Inki Dae <inki.dae@samsung.com>");
490MODULE_AUTHOR("Joonyoung Shim <jy0922.shim@samsung.com>");
491MODULE_AUTHOR("Seung-Woo Kim <sw0312.kim@samsung.com>");
492MODULE_DESCRIPTION("Samsung SoC DRM Driver");
493MODULE_LICENSE("GPL");