1
2
3
4
5
6
7
8
9
10
11
12
13
14#include <linux/pm_runtime.h>
15#include <drm/drmP.h>
16#include <drm/drm_atomic.h>
17#include <drm/drm_atomic_helper.h>
18#include <drm/drm_crtc_helper.h>
19#include <drm/drm_fb_helper.h>
20
21#include <linux/component.h>
22
23#include <drm/exynos_drm.h>
24
25#include "exynos_drm_drv.h"
26#include "exynos_drm_fbdev.h"
27#include "exynos_drm_fb.h"
28#include "exynos_drm_gem.h"
29#include "exynos_drm_plane.h"
30#include "exynos_drm_ipp.h"
31#include "exynos_drm_vidi.h"
32#include "exynos_drm_g2d.h"
33#include "exynos_drm_iommu.h"
34
35#define DRIVER_NAME "exynos"
36#define DRIVER_DESC "Samsung SoC DRM"
37#define DRIVER_DATE "20180330"
38
39
40
41
42
43
44
45#define DRIVER_MAJOR 1
46#define DRIVER_MINOR 1
47
48static int exynos_drm_open(struct drm_device *dev, struct drm_file *file)
49{
50 struct drm_exynos_file_private *file_priv;
51 int ret;
52
53 file_priv = kzalloc(sizeof(*file_priv), GFP_KERNEL);
54 if (!file_priv)
55 return -ENOMEM;
56
57 file->driver_priv = file_priv;
58
59 ret = exynos_drm_subdrv_open(dev, file);
60 if (ret)
61 goto err_file_priv_free;
62
63 return ret;
64
65err_file_priv_free:
66 kfree(file_priv);
67 file->driver_priv = NULL;
68 return ret;
69}
70
71static void exynos_drm_postclose(struct drm_device *dev, struct drm_file *file)
72{
73 exynos_drm_subdrv_close(dev, file);
74 kfree(file->driver_priv);
75 file->driver_priv = NULL;
76}
77
78static const struct vm_operations_struct exynos_drm_gem_vm_ops = {
79 .fault = exynos_drm_gem_fault,
80 .open = drm_gem_vm_open,
81 .close = drm_gem_vm_close,
82};
83
84static const struct drm_ioctl_desc exynos_ioctls[] = {
85 DRM_IOCTL_DEF_DRV(EXYNOS_GEM_CREATE, exynos_drm_gem_create_ioctl,
86 DRM_AUTH | DRM_RENDER_ALLOW),
87 DRM_IOCTL_DEF_DRV(EXYNOS_GEM_MAP, exynos_drm_gem_map_ioctl,
88 DRM_AUTH | DRM_RENDER_ALLOW),
89 DRM_IOCTL_DEF_DRV(EXYNOS_GEM_GET, exynos_drm_gem_get_ioctl,
90 DRM_RENDER_ALLOW),
91 DRM_IOCTL_DEF_DRV(EXYNOS_VIDI_CONNECTION, vidi_connection_ioctl,
92 DRM_AUTH),
93 DRM_IOCTL_DEF_DRV(EXYNOS_G2D_GET_VER, exynos_g2d_get_ver_ioctl,
94 DRM_AUTH | DRM_RENDER_ALLOW),
95 DRM_IOCTL_DEF_DRV(EXYNOS_G2D_SET_CMDLIST, exynos_g2d_set_cmdlist_ioctl,
96 DRM_AUTH | DRM_RENDER_ALLOW),
97 DRM_IOCTL_DEF_DRV(EXYNOS_G2D_EXEC, exynos_g2d_exec_ioctl,
98 DRM_AUTH | DRM_RENDER_ALLOW),
99 DRM_IOCTL_DEF_DRV(EXYNOS_IPP_GET_RESOURCES,
100 exynos_drm_ipp_get_res_ioctl,
101 DRM_AUTH | DRM_RENDER_ALLOW),
102 DRM_IOCTL_DEF_DRV(EXYNOS_IPP_GET_CAPS, exynos_drm_ipp_get_caps_ioctl,
103 DRM_AUTH | DRM_RENDER_ALLOW),
104 DRM_IOCTL_DEF_DRV(EXYNOS_IPP_GET_LIMITS,
105 exynos_drm_ipp_get_limits_ioctl,
106 DRM_AUTH | DRM_RENDER_ALLOW),
107 DRM_IOCTL_DEF_DRV(EXYNOS_IPP_COMMIT, exynos_drm_ipp_commit_ioctl,
108 DRM_AUTH | DRM_RENDER_ALLOW),
109};
110
111static const struct file_operations exynos_drm_driver_fops = {
112 .owner = THIS_MODULE,
113 .open = drm_open,
114 .mmap = exynos_drm_gem_mmap,
115 .poll = drm_poll,
116 .read = drm_read,
117 .unlocked_ioctl = drm_ioctl,
118 .compat_ioctl = drm_compat_ioctl,
119 .release = drm_release,
120};
121
122static struct drm_driver exynos_drm_driver = {
123 .driver_features = DRIVER_MODESET | DRIVER_GEM | DRIVER_PRIME
124 | DRIVER_ATOMIC | DRIVER_RENDER,
125 .open = exynos_drm_open,
126 .lastclose = drm_fb_helper_lastclose,
127 .postclose = exynos_drm_postclose,
128 .gem_free_object_unlocked = exynos_drm_gem_free_object,
129 .gem_vm_ops = &exynos_drm_gem_vm_ops,
130 .dumb_create = exynos_drm_gem_dumb_create,
131 .prime_handle_to_fd = drm_gem_prime_handle_to_fd,
132 .prime_fd_to_handle = drm_gem_prime_fd_to_handle,
133 .gem_prime_export = drm_gem_prime_export,
134 .gem_prime_import = exynos_drm_gem_prime_import,
135 .gem_prime_get_sg_table = exynos_drm_gem_prime_get_sg_table,
136 .gem_prime_import_sg_table = exynos_drm_gem_prime_import_sg_table,
137 .gem_prime_vmap = exynos_drm_gem_prime_vmap,
138 .gem_prime_vunmap = exynos_drm_gem_prime_vunmap,
139 .gem_prime_mmap = exynos_drm_gem_prime_mmap,
140 .ioctls = exynos_ioctls,
141 .num_ioctls = ARRAY_SIZE(exynos_ioctls),
142 .fops = &exynos_drm_driver_fops,
143 .name = DRIVER_NAME,
144 .desc = DRIVER_DESC,
145 .date = DRIVER_DATE,
146 .major = DRIVER_MAJOR,
147 .minor = DRIVER_MINOR,
148};
149
150#ifdef CONFIG_PM_SLEEP
151static int exynos_drm_suspend(struct device *dev)
152{
153 struct drm_device *drm_dev = dev_get_drvdata(dev);
154 struct exynos_drm_private *private;
155
156 if (pm_runtime_suspended(dev) || !drm_dev)
157 return 0;
158
159 private = drm_dev->dev_private;
160
161 drm_kms_helper_poll_disable(drm_dev);
162 exynos_drm_fbdev_suspend(drm_dev);
163 private->suspend_state = drm_atomic_helper_suspend(drm_dev);
164 if (IS_ERR(private->suspend_state)) {
165 exynos_drm_fbdev_resume(drm_dev);
166 drm_kms_helper_poll_enable(drm_dev);
167 return PTR_ERR(private->suspend_state);
168 }
169
170 return 0;
171}
172
173static int exynos_drm_resume(struct device *dev)
174{
175 struct drm_device *drm_dev = dev_get_drvdata(dev);
176 struct exynos_drm_private *private;
177
178 if (pm_runtime_suspended(dev) || !drm_dev)
179 return 0;
180
181 private = drm_dev->dev_private;
182 drm_atomic_helper_resume(drm_dev, private->suspend_state);
183 exynos_drm_fbdev_resume(drm_dev);
184 drm_kms_helper_poll_enable(drm_dev);
185
186 return 0;
187}
188#endif
189
190static const struct dev_pm_ops exynos_drm_pm_ops = {
191 SET_SYSTEM_SLEEP_PM_OPS(exynos_drm_suspend, exynos_drm_resume)
192};
193
194
195static struct platform_driver exynos_drm_platform_driver;
196
197struct exynos_drm_driver_info {
198 struct platform_driver *driver;
199 unsigned int flags;
200};
201
202#define DRM_COMPONENT_DRIVER BIT(0)
203#define DRM_VIRTUAL_DEVICE BIT(1)
204#define DRM_DMA_DEVICE BIT(2)
205#define DRM_FIMC_DEVICE BIT(3)
206
207#define DRV_PTR(drv, cond) (IS_ENABLED(cond) ? &drv : NULL)
208
209
210
211
212
213static struct exynos_drm_driver_info exynos_drm_drivers[] = {
214 {
215 DRV_PTR(fimd_driver, CONFIG_DRM_EXYNOS_FIMD),
216 DRM_COMPONENT_DRIVER | DRM_DMA_DEVICE
217 }, {
218 DRV_PTR(exynos5433_decon_driver, CONFIG_DRM_EXYNOS5433_DECON),
219 DRM_COMPONENT_DRIVER | DRM_DMA_DEVICE
220 }, {
221 DRV_PTR(decon_driver, CONFIG_DRM_EXYNOS7_DECON),
222 DRM_COMPONENT_DRIVER | DRM_DMA_DEVICE
223 }, {
224 DRV_PTR(mixer_driver, CONFIG_DRM_EXYNOS_MIXER),
225 DRM_COMPONENT_DRIVER | DRM_DMA_DEVICE
226 }, {
227 DRV_PTR(mic_driver, CONFIG_DRM_EXYNOS_MIC),
228 DRM_COMPONENT_DRIVER
229 }, {
230 DRV_PTR(dp_driver, CONFIG_DRM_EXYNOS_DP),
231 DRM_COMPONENT_DRIVER
232 }, {
233 DRV_PTR(dsi_driver, CONFIG_DRM_EXYNOS_DSI),
234 DRM_COMPONENT_DRIVER
235 }, {
236 DRV_PTR(hdmi_driver, CONFIG_DRM_EXYNOS_HDMI),
237 DRM_COMPONENT_DRIVER
238 }, {
239 DRV_PTR(vidi_driver, CONFIG_DRM_EXYNOS_VIDI),
240 DRM_COMPONENT_DRIVER | DRM_VIRTUAL_DEVICE
241 }, {
242 DRV_PTR(g2d_driver, CONFIG_DRM_EXYNOS_G2D),
243 }, {
244 DRV_PTR(fimc_driver, CONFIG_DRM_EXYNOS_FIMC),
245 DRM_COMPONENT_DRIVER | DRM_FIMC_DEVICE,
246 }, {
247 DRV_PTR(rotator_driver, CONFIG_DRM_EXYNOS_ROTATOR),
248 DRM_COMPONENT_DRIVER
249 }, {
250 DRV_PTR(scaler_driver, CONFIG_DRM_EXYNOS_SCALER),
251 DRM_COMPONENT_DRIVER
252 }, {
253 DRV_PTR(gsc_driver, CONFIG_DRM_EXYNOS_GSC),
254 DRM_COMPONENT_DRIVER
255 }, {
256 &exynos_drm_platform_driver,
257 DRM_VIRTUAL_DEVICE
258 }
259};
260
261static int compare_dev(struct device *dev, void *data)
262{
263 return dev == (struct device *)data;
264}
265
266static struct component_match *exynos_drm_match_add(struct device *dev)
267{
268 struct component_match *match = NULL;
269 int i;
270
271 for (i = 0; i < ARRAY_SIZE(exynos_drm_drivers); ++i) {
272 struct exynos_drm_driver_info *info = &exynos_drm_drivers[i];
273 struct device *p = NULL, *d;
274
275 if (!info->driver || !(info->flags & DRM_COMPONENT_DRIVER))
276 continue;
277
278 while ((d = bus_find_device(&platform_bus_type, p,
279 &info->driver->driver,
280 (void *)platform_bus_type.match))) {
281 put_device(p);
282
283 if (!(info->flags & DRM_FIMC_DEVICE) ||
284 exynos_drm_check_fimc_device(d) == 0)
285 component_match_add(dev, &match,
286 compare_dev, d);
287 p = d;
288 }
289 put_device(p);
290 }
291
292 return match ?: ERR_PTR(-ENODEV);
293}
294
295static struct device *exynos_drm_get_dma_device(void)
296{
297 int i;
298
299 for (i = 0; i < ARRAY_SIZE(exynos_drm_drivers); ++i) {
300 struct exynos_drm_driver_info *info = &exynos_drm_drivers[i];
301 struct device *dev;
302
303 if (!info->driver || !(info->flags & DRM_DMA_DEVICE))
304 continue;
305
306 while ((dev = bus_find_device(&platform_bus_type, NULL,
307 &info->driver->driver,
308 (void *)platform_bus_type.match))) {
309 put_device(dev);
310 return dev;
311 }
312 }
313 return NULL;
314}
315
316static int exynos_drm_bind(struct device *dev)
317{
318 struct exynos_drm_private *private;
319 struct drm_encoder *encoder;
320 struct drm_device *drm;
321 unsigned int clone_mask;
322 int cnt, ret;
323
324 drm = drm_dev_alloc(&exynos_drm_driver, dev);
325 if (IS_ERR(drm))
326 return PTR_ERR(drm);
327
328 private = kzalloc(sizeof(struct exynos_drm_private), GFP_KERNEL);
329 if (!private) {
330 ret = -ENOMEM;
331 goto err_free_drm;
332 }
333
334 init_waitqueue_head(&private->wait);
335 spin_lock_init(&private->lock);
336
337 dev_set_drvdata(dev, drm);
338 drm->dev_private = (void *)private;
339
340
341 private->dma_dev = exynos_drm_get_dma_device();
342 if (!private->dma_dev) {
343 DRM_ERROR("no device found for DMA mapping operations.\n");
344 ret = -ENODEV;
345 goto err_free_private;
346 }
347 DRM_INFO("Exynos DRM: using %s device for DMA mapping operations\n",
348 dev_name(private->dma_dev));
349
350
351 ret = drm_create_iommu_mapping(drm);
352 if (ret < 0) {
353 DRM_ERROR("failed to create iommu mapping.\n");
354 goto err_free_private;
355 }
356
357 drm_mode_config_init(drm);
358
359 exynos_drm_mode_config_init(drm);
360
361
362 cnt = 0;
363 clone_mask = 0;
364 list_for_each_entry(encoder, &drm->mode_config.encoder_list, head)
365 clone_mask |= (1 << (cnt++));
366
367 list_for_each_entry(encoder, &drm->mode_config.encoder_list, head)
368 encoder->possible_clones = clone_mask;
369
370
371 ret = component_bind_all(drm->dev, drm);
372 if (ret)
373 goto err_mode_config_cleanup;
374
375 ret = drm_vblank_init(drm, drm->mode_config.num_crtc);
376 if (ret)
377 goto err_unbind_all;
378
379
380 ret = exynos_drm_device_subdrv_probe(drm);
381 if (ret)
382 goto err_unbind_all;
383
384 drm_mode_config_reset(drm);
385
386
387
388
389
390
391
392
393
394 drm->irq_enabled = true;
395
396
397 drm_kms_helper_poll_init(drm);
398
399 ret = exynos_drm_fbdev_init(drm);
400 if (ret)
401 goto err_cleanup_poll;
402
403
404 ret = drm_dev_register(drm, 0);
405 if (ret < 0)
406 goto err_cleanup_fbdev;
407
408 return 0;
409
410err_cleanup_fbdev:
411 exynos_drm_fbdev_fini(drm);
412err_cleanup_poll:
413 drm_kms_helper_poll_fini(drm);
414 exynos_drm_device_subdrv_remove(drm);
415err_unbind_all:
416 component_unbind_all(drm->dev, drm);
417err_mode_config_cleanup:
418 drm_mode_config_cleanup(drm);
419 drm_release_iommu_mapping(drm);
420err_free_private:
421 kfree(private);
422err_free_drm:
423 drm_dev_put(drm);
424
425 return ret;
426}
427
428static void exynos_drm_unbind(struct device *dev)
429{
430 struct drm_device *drm = dev_get_drvdata(dev);
431
432 drm_dev_unregister(drm);
433
434 exynos_drm_device_subdrv_remove(drm);
435
436 exynos_drm_fbdev_fini(drm);
437 drm_kms_helper_poll_fini(drm);
438
439 component_unbind_all(drm->dev, drm);
440 drm_mode_config_cleanup(drm);
441 drm_release_iommu_mapping(drm);
442
443 kfree(drm->dev_private);
444 drm->dev_private = NULL;
445 dev_set_drvdata(dev, NULL);
446
447 drm_dev_put(drm);
448}
449
450static const struct component_master_ops exynos_drm_ops = {
451 .bind = exynos_drm_bind,
452 .unbind = exynos_drm_unbind,
453};
454
455static int exynos_drm_platform_probe(struct platform_device *pdev)
456{
457 struct component_match *match;
458
459 pdev->dev.coherent_dma_mask = DMA_BIT_MASK(32);
460
461 match = exynos_drm_match_add(&pdev->dev);
462 if (IS_ERR(match))
463 return PTR_ERR(match);
464
465 return component_master_add_with_match(&pdev->dev, &exynos_drm_ops,
466 match);
467}
468
469static int exynos_drm_platform_remove(struct platform_device *pdev)
470{
471 component_master_del(&pdev->dev, &exynos_drm_ops);
472 return 0;
473}
474
475static struct platform_driver exynos_drm_platform_driver = {
476 .probe = exynos_drm_platform_probe,
477 .remove = exynos_drm_platform_remove,
478 .driver = {
479 .name = "exynos-drm",
480 .pm = &exynos_drm_pm_ops,
481 },
482};
483
484static void exynos_drm_unregister_devices(void)
485{
486 int i;
487
488 for (i = ARRAY_SIZE(exynos_drm_drivers) - 1; i >= 0; --i) {
489 struct exynos_drm_driver_info *info = &exynos_drm_drivers[i];
490 struct device *dev;
491
492 if (!info->driver || !(info->flags & DRM_VIRTUAL_DEVICE))
493 continue;
494
495 while ((dev = bus_find_device(&platform_bus_type, NULL,
496 &info->driver->driver,
497 (void *)platform_bus_type.match))) {
498 put_device(dev);
499 platform_device_unregister(to_platform_device(dev));
500 }
501 }
502}
503
504static int exynos_drm_register_devices(void)
505{
506 struct platform_device *pdev;
507 int i;
508
509 for (i = 0; i < ARRAY_SIZE(exynos_drm_drivers); ++i) {
510 struct exynos_drm_driver_info *info = &exynos_drm_drivers[i];
511
512 if (!info->driver || !(info->flags & DRM_VIRTUAL_DEVICE))
513 continue;
514
515 pdev = platform_device_register_simple(
516 info->driver->driver.name, -1, NULL, 0);
517 if (IS_ERR(pdev))
518 goto fail;
519 }
520
521 return 0;
522fail:
523 exynos_drm_unregister_devices();
524 return PTR_ERR(pdev);
525}
526
527static void exynos_drm_unregister_drivers(void)
528{
529 int i;
530
531 for (i = ARRAY_SIZE(exynos_drm_drivers) - 1; i >= 0; --i) {
532 struct exynos_drm_driver_info *info = &exynos_drm_drivers[i];
533
534 if (!info->driver)
535 continue;
536
537 platform_driver_unregister(info->driver);
538 }
539}
540
541static int exynos_drm_register_drivers(void)
542{
543 int i, ret;
544
545 for (i = 0; i < ARRAY_SIZE(exynos_drm_drivers); ++i) {
546 struct exynos_drm_driver_info *info = &exynos_drm_drivers[i];
547
548 if (!info->driver)
549 continue;
550
551 ret = platform_driver_register(info->driver);
552 if (ret)
553 goto fail;
554 }
555 return 0;
556fail:
557 exynos_drm_unregister_drivers();
558 return ret;
559}
560
561static int exynos_drm_init(void)
562{
563 int ret;
564
565 ret = exynos_drm_register_devices();
566 if (ret)
567 return ret;
568
569 ret = exynos_drm_register_drivers();
570 if (ret)
571 goto err_unregister_pdevs;
572
573 return 0;
574
575err_unregister_pdevs:
576 exynos_drm_unregister_devices();
577
578 return ret;
579}
580
581static void exynos_drm_exit(void)
582{
583 exynos_drm_unregister_drivers();
584 exynos_drm_unregister_devices();
585}
586
587module_init(exynos_drm_init);
588module_exit(exynos_drm_exit);
589
590MODULE_AUTHOR("Inki Dae <inki.dae@samsung.com>");
591MODULE_AUTHOR("Joonyoung Shim <jy0922.shim@samsung.com>");
592MODULE_AUTHOR("Seung-Woo Kim <sw0312.kim@samsung.com>");
593MODULE_DESCRIPTION("Samsung SoC DRM Driver");
594MODULE_LICENSE("GPL");
595
