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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_vidi.h"
31#include "exynos_drm_g2d.h"
32#include "exynos_drm_iommu.h"
33
34#define DRIVER_NAME "exynos"
35#define DRIVER_DESC "Samsung SoC DRM"
36#define DRIVER_DATE "20110530"
37#define DRIVER_MAJOR 1
38#define DRIVER_MINOR 0
39
40int exynos_atomic_check(struct drm_device *dev,
41 struct drm_atomic_state *state)
42{
43 int ret;
44
45 ret = drm_atomic_helper_check_modeset(dev, state);
46 if (ret)
47 return ret;
48
49 ret = drm_atomic_normalize_zpos(dev, state);
50 if (ret)
51 return ret;
52
53 ret = drm_atomic_helper_check_planes(dev, state);
54 if (ret)
55 return ret;
56
57 return ret;
58}
59
60static int exynos_drm_open(struct drm_device *dev, struct drm_file *file)
61{
62 struct drm_exynos_file_private *file_priv;
63 int ret;
64
65 file_priv = kzalloc(sizeof(*file_priv), GFP_KERNEL);
66 if (!file_priv)
67 return -ENOMEM;
68
69 file->driver_priv = file_priv;
70
71 ret = exynos_drm_subdrv_open(dev, file);
72 if (ret)
73 goto err_file_priv_free;
74
75 return ret;
76
77err_file_priv_free:
78 kfree(file_priv);
79 file->driver_priv = NULL;
80 return ret;
81}
82
83static void exynos_drm_postclose(struct drm_device *dev, struct drm_file *file)
84{
85 exynos_drm_subdrv_close(dev, file);
86 kfree(file->driver_priv);
87 file->driver_priv = NULL;
88}
89
90static const struct vm_operations_struct exynos_drm_gem_vm_ops = {
91 .fault = exynos_drm_gem_fault,
92 .open = drm_gem_vm_open,
93 .close = drm_gem_vm_close,
94};
95
96static const struct drm_ioctl_desc exynos_ioctls[] = {
97 DRM_IOCTL_DEF_DRV(EXYNOS_GEM_CREATE, exynos_drm_gem_create_ioctl,
98 DRM_AUTH | DRM_RENDER_ALLOW),
99 DRM_IOCTL_DEF_DRV(EXYNOS_GEM_MAP, exynos_drm_gem_map_ioctl,
100 DRM_AUTH | DRM_RENDER_ALLOW),
101 DRM_IOCTL_DEF_DRV(EXYNOS_GEM_GET, exynos_drm_gem_get_ioctl,
102 DRM_RENDER_ALLOW),
103 DRM_IOCTL_DEF_DRV(EXYNOS_VIDI_CONNECTION, vidi_connection_ioctl,
104 DRM_AUTH),
105 DRM_IOCTL_DEF_DRV(EXYNOS_G2D_GET_VER, exynos_g2d_get_ver_ioctl,
106 DRM_AUTH | DRM_RENDER_ALLOW),
107 DRM_IOCTL_DEF_DRV(EXYNOS_G2D_SET_CMDLIST, exynos_g2d_set_cmdlist_ioctl,
108 DRM_AUTH | DRM_RENDER_ALLOW),
109 DRM_IOCTL_DEF_DRV(EXYNOS_G2D_EXEC, exynos_g2d_exec_ioctl,
110 DRM_AUTH | DRM_RENDER_ALLOW),
111};
112
113static const struct file_operations exynos_drm_driver_fops = {
114 .owner = THIS_MODULE,
115 .open = drm_open,
116 .mmap = exynos_drm_gem_mmap,
117 .poll = drm_poll,
118 .read = drm_read,
119 .unlocked_ioctl = drm_ioctl,
120 .compat_ioctl = drm_compat_ioctl,
121 .release = drm_release,
122};
123
124static struct drm_driver exynos_drm_driver = {
125 .driver_features = DRIVER_MODESET | DRIVER_GEM | DRIVER_PRIME
126 | DRIVER_ATOMIC | DRIVER_RENDER,
127 .open = exynos_drm_open,
128 .lastclose = drm_fb_helper_lastclose,
129 .postclose = exynos_drm_postclose,
130 .gem_free_object_unlocked = exynos_drm_gem_free_object,
131 .gem_vm_ops = &exynos_drm_gem_vm_ops,
132 .dumb_create = exynos_drm_gem_dumb_create,
133 .prime_handle_to_fd = drm_gem_prime_handle_to_fd,
134 .prime_fd_to_handle = drm_gem_prime_fd_to_handle,
135 .gem_prime_export = drm_gem_prime_export,
136 .gem_prime_import = exynos_drm_gem_prime_import,
137 .gem_prime_get_sg_table = exynos_drm_gem_prime_get_sg_table,
138 .gem_prime_import_sg_table = exynos_drm_gem_prime_import_sg_table,
139 .gem_prime_vmap = exynos_drm_gem_prime_vmap,
140 .gem_prime_vunmap = exynos_drm_gem_prime_vunmap,
141 .gem_prime_mmap = exynos_drm_gem_prime_mmap,
142 .ioctls = exynos_ioctls,
143 .num_ioctls = ARRAY_SIZE(exynos_ioctls),
144 .fops = &exynos_drm_driver_fops,
145 .name = DRIVER_NAME,
146 .desc = DRIVER_DESC,
147 .date = DRIVER_DATE,
148 .major = DRIVER_MAJOR,
149 .minor = DRIVER_MINOR,
150};
151
152#ifdef CONFIG_PM_SLEEP
153static int exynos_drm_suspend(struct device *dev)
154{
155 struct drm_device *drm_dev = dev_get_drvdata(dev);
156 struct exynos_drm_private *private;
157
158 if (pm_runtime_suspended(dev) || !drm_dev)
159 return 0;
160
161 private = drm_dev->dev_private;
162
163 drm_kms_helper_poll_disable(drm_dev);
164 exynos_drm_fbdev_suspend(drm_dev);
165 private->suspend_state = drm_atomic_helper_suspend(drm_dev);
166 if (IS_ERR(private->suspend_state)) {
167 exynos_drm_fbdev_resume(drm_dev);
168 drm_kms_helper_poll_enable(drm_dev);
169 return PTR_ERR(private->suspend_state);
170 }
171
172 return 0;
173}
174
175static int exynos_drm_resume(struct device *dev)
176{
177 struct drm_device *drm_dev = dev_get_drvdata(dev);
178 struct exynos_drm_private *private;
179
180 if (pm_runtime_suspended(dev) || !drm_dev)
181 return 0;
182
183 private = drm_dev->dev_private;
184 drm_atomic_helper_resume(drm_dev, private->suspend_state);
185 exynos_drm_fbdev_resume(drm_dev);
186 drm_kms_helper_poll_enable(drm_dev);
187
188 return 0;
189}
190#endif
191
192static const struct dev_pm_ops exynos_drm_pm_ops = {
193 SET_SYSTEM_SLEEP_PM_OPS(exynos_drm_suspend, exynos_drm_resume)
194};
195
196
197static struct platform_driver exynos_drm_platform_driver;
198
199struct exynos_drm_driver_info {
200 struct platform_driver *driver;
201 unsigned int flags;
202};
203
204#define DRM_COMPONENT_DRIVER BIT(0)
205#define DRM_VIRTUAL_DEVICE BIT(1)
206#define DRM_DMA_DEVICE BIT(2)
207
208#define DRV_PTR(drv, cond) (IS_ENABLED(cond) ? &drv : NULL)
209
210
211
212
213
214static struct exynos_drm_driver_info exynos_drm_drivers[] = {
215 {
216 DRV_PTR(fimd_driver, CONFIG_DRM_EXYNOS_FIMD),
217 DRM_COMPONENT_DRIVER | DRM_DMA_DEVICE
218 }, {
219 DRV_PTR(exynos5433_decon_driver, CONFIG_DRM_EXYNOS5433_DECON),
220 DRM_COMPONENT_DRIVER | DRM_DMA_DEVICE
221 }, {
222 DRV_PTR(decon_driver, CONFIG_DRM_EXYNOS7_DECON),
223 DRM_COMPONENT_DRIVER | DRM_DMA_DEVICE
224 }, {
225 DRV_PTR(mixer_driver, CONFIG_DRM_EXYNOS_MIXER),
226 DRM_COMPONENT_DRIVER | DRM_DMA_DEVICE
227 }, {
228 DRV_PTR(mic_driver, CONFIG_DRM_EXYNOS_MIC),
229 DRM_COMPONENT_DRIVER
230 }, {
231 DRV_PTR(dp_driver, CONFIG_DRM_EXYNOS_DP),
232 DRM_COMPONENT_DRIVER
233 }, {
234 DRV_PTR(dsi_driver, CONFIG_DRM_EXYNOS_DSI),
235 DRM_COMPONENT_DRIVER
236 }, {
237 DRV_PTR(hdmi_driver, CONFIG_DRM_EXYNOS_HDMI),
238 DRM_COMPONENT_DRIVER
239 }, {
240 DRV_PTR(vidi_driver, CONFIG_DRM_EXYNOS_VIDI),
241 DRM_COMPONENT_DRIVER | DRM_VIRTUAL_DEVICE
242 }, {
243 DRV_PTR(g2d_driver, CONFIG_DRM_EXYNOS_G2D),
244 }, {
245 DRV_PTR(fimc_driver, CONFIG_DRM_EXYNOS_FIMC),
246 }, {
247 DRV_PTR(rotator_driver, CONFIG_DRM_EXYNOS_ROTATOR),
248 }, {
249 DRV_PTR(gsc_driver, CONFIG_DRM_EXYNOS_GSC),
250 }, {
251 &exynos_drm_platform_driver,
252 DRM_VIRTUAL_DEVICE
253 }
254};
255
256static int compare_dev(struct device *dev, void *data)
257{
258 return dev == (struct device *)data;
259}
260
261static struct component_match *exynos_drm_match_add(struct device *dev)
262{
263 struct component_match *match = NULL;
264 int i;
265
266 for (i = 0; i < ARRAY_SIZE(exynos_drm_drivers); ++i) {
267 struct exynos_drm_driver_info *info = &exynos_drm_drivers[i];
268 struct device *p = NULL, *d;
269
270 if (!info->driver || !(info->flags & DRM_COMPONENT_DRIVER))
271 continue;
272
273 while ((d = bus_find_device(&platform_bus_type, p,
274 &info->driver->driver,
275 (void *)platform_bus_type.match))) {
276 put_device(p);
277 component_match_add(dev, &match, compare_dev, d);
278 p = d;
279 }
280 put_device(p);
281 }
282
283 return match ?: ERR_PTR(-ENODEV);
284}
285
286static struct device *exynos_drm_get_dma_device(void)
287{
288 int i;
289
290 for (i = 0; i < ARRAY_SIZE(exynos_drm_drivers); ++i) {
291 struct exynos_drm_driver_info *info = &exynos_drm_drivers[i];
292 struct device *dev;
293
294 if (!info->driver || !(info->flags & DRM_DMA_DEVICE))
295 continue;
296
297 while ((dev = bus_find_device(&platform_bus_type, NULL,
298 &info->driver->driver,
299 (void *)platform_bus_type.match))) {
300 put_device(dev);
301 return dev;
302 }
303 }
304 return NULL;
305}
306
307static int exynos_drm_bind(struct device *dev)
308{
309 struct exynos_drm_private *private;
310 struct drm_encoder *encoder;
311 struct drm_device *drm;
312 unsigned int clone_mask;
313 int cnt, ret;
314
315 drm = drm_dev_alloc(&exynos_drm_driver, dev);
316 if (IS_ERR(drm))
317 return PTR_ERR(drm);
318
319 private = kzalloc(sizeof(struct exynos_drm_private), GFP_KERNEL);
320 if (!private) {
321 ret = -ENOMEM;
322 goto err_free_drm;
323 }
324
325 init_waitqueue_head(&private->wait);
326 spin_lock_init(&private->lock);
327
328 dev_set_drvdata(dev, drm);
329 drm->dev_private = (void *)private;
330
331
332 private->dma_dev = exynos_drm_get_dma_device();
333 if (!private->dma_dev) {
334 DRM_ERROR("no device found for DMA mapping operations.\n");
335 ret = -ENODEV;
336 goto err_free_private;
337 }
338 DRM_INFO("Exynos DRM: using %s device for DMA mapping operations\n",
339 dev_name(private->dma_dev));
340
341
342 ret = drm_create_iommu_mapping(drm);
343 if (ret < 0) {
344 DRM_ERROR("failed to create iommu mapping.\n");
345 goto err_free_private;
346 }
347
348 drm_mode_config_init(drm);
349
350 exynos_drm_mode_config_init(drm);
351
352
353 cnt = 0;
354 clone_mask = 0;
355 list_for_each_entry(encoder, &drm->mode_config.encoder_list, head)
356 clone_mask |= (1 << (cnt++));
357
358 list_for_each_entry(encoder, &drm->mode_config.encoder_list, head)
359 encoder->possible_clones = clone_mask;
360
361
362 ret = component_bind_all(drm->dev, drm);
363 if (ret)
364 goto err_mode_config_cleanup;
365
366 ret = drm_vblank_init(drm, drm->mode_config.num_crtc);
367 if (ret)
368 goto err_unbind_all;
369
370
371 ret = exynos_drm_device_subdrv_probe(drm);
372 if (ret)
373 goto err_unbind_all;
374
375 drm_mode_config_reset(drm);
376
377
378
379
380
381
382
383
384
385 drm->irq_enabled = true;
386
387
388 drm_kms_helper_poll_init(drm);
389
390 ret = exynos_drm_fbdev_init(drm);
391 if (ret)
392 goto err_cleanup_poll;
393
394
395 ret = drm_dev_register(drm, 0);
396 if (ret < 0)
397 goto err_cleanup_fbdev;
398
399 return 0;
400
401err_cleanup_fbdev:
402 exynos_drm_fbdev_fini(drm);
403err_cleanup_poll:
404 drm_kms_helper_poll_fini(drm);
405 exynos_drm_device_subdrv_remove(drm);
406err_unbind_all:
407 component_unbind_all(drm->dev, drm);
408err_mode_config_cleanup:
409 drm_mode_config_cleanup(drm);
410 drm_release_iommu_mapping(drm);
411err_free_private:
412 kfree(private);
413err_free_drm:
414 drm_dev_unref(drm);
415
416 return ret;
417}
418
419static void exynos_drm_unbind(struct device *dev)
420{
421 struct drm_device *drm = dev_get_drvdata(dev);
422
423 drm_dev_unregister(drm);
424
425 exynos_drm_device_subdrv_remove(drm);
426
427 exynos_drm_fbdev_fini(drm);
428 drm_kms_helper_poll_fini(drm);
429
430 component_unbind_all(drm->dev, drm);
431 drm_mode_config_cleanup(drm);
432 drm_release_iommu_mapping(drm);
433
434 kfree(drm->dev_private);
435 drm->dev_private = NULL;
436 dev_set_drvdata(dev, NULL);
437
438 drm_dev_unref(drm);
439}
440
441static const struct component_master_ops exynos_drm_ops = {
442 .bind = exynos_drm_bind,
443 .unbind = exynos_drm_unbind,
444};
445
446static int exynos_drm_platform_probe(struct platform_device *pdev)
447{
448 struct component_match *match;
449
450 pdev->dev.coherent_dma_mask = DMA_BIT_MASK(32);
451
452 match = exynos_drm_match_add(&pdev->dev);
453 if (IS_ERR(match))
454 return PTR_ERR(match);
455
456 return component_master_add_with_match(&pdev->dev, &exynos_drm_ops,
457 match);
458}
459
460static int exynos_drm_platform_remove(struct platform_device *pdev)
461{
462 component_master_del(&pdev->dev, &exynos_drm_ops);
463 return 0;
464}
465
466static struct platform_driver exynos_drm_platform_driver = {
467 .probe = exynos_drm_platform_probe,
468 .remove = exynos_drm_platform_remove,
469 .driver = {
470 .name = "exynos-drm",
471 .pm = &exynos_drm_pm_ops,
472 },
473};
474
475static void exynos_drm_unregister_devices(void)
476{
477 int i;
478
479 for (i = ARRAY_SIZE(exynos_drm_drivers) - 1; i >= 0; --i) {
480 struct exynos_drm_driver_info *info = &exynos_drm_drivers[i];
481 struct device *dev;
482
483 if (!info->driver || !(info->flags & DRM_VIRTUAL_DEVICE))
484 continue;
485
486 while ((dev = bus_find_device(&platform_bus_type, NULL,
487 &info->driver->driver,
488 (void *)platform_bus_type.match))) {
489 put_device(dev);
490 platform_device_unregister(to_platform_device(dev));
491 }
492 }
493}
494
495static int exynos_drm_register_devices(void)
496{
497 struct platform_device *pdev;
498 int i;
499
500 for (i = 0; i < ARRAY_SIZE(exynos_drm_drivers); ++i) {
501 struct exynos_drm_driver_info *info = &exynos_drm_drivers[i];
502
503 if (!info->driver || !(info->flags & DRM_VIRTUAL_DEVICE))
504 continue;
505
506 pdev = platform_device_register_simple(
507 info->driver->driver.name, -1, NULL, 0);
508 if (IS_ERR(pdev))
509 goto fail;
510 }
511
512 return 0;
513fail:
514 exynos_drm_unregister_devices();
515 return PTR_ERR(pdev);
516}
517
518static void exynos_drm_unregister_drivers(void)
519{
520 int i;
521
522 for (i = ARRAY_SIZE(exynos_drm_drivers) - 1; i >= 0; --i) {
523 struct exynos_drm_driver_info *info = &exynos_drm_drivers[i];
524
525 if (!info->driver)
526 continue;
527
528 platform_driver_unregister(info->driver);
529 }
530}
531
532static int exynos_drm_register_drivers(void)
533{
534 int i, ret;
535
536 for (i = 0; i < ARRAY_SIZE(exynos_drm_drivers); ++i) {
537 struct exynos_drm_driver_info *info = &exynos_drm_drivers[i];
538
539 if (!info->driver)
540 continue;
541
542 ret = platform_driver_register(info->driver);
543 if (ret)
544 goto fail;
545 }
546 return 0;
547fail:
548 exynos_drm_unregister_drivers();
549 return ret;
550}
551
552static int exynos_drm_init(void)
553{
554 int ret;
555
556 ret = exynos_drm_register_devices();
557 if (ret)
558 return ret;
559
560 ret = exynos_drm_register_drivers();
561 if (ret)
562 goto err_unregister_pdevs;
563
564 return 0;
565
566err_unregister_pdevs:
567 exynos_drm_unregister_devices();
568
569 return ret;
570}
571
572static void exynos_drm_exit(void)
573{
574 exynos_drm_unregister_drivers();
575 exynos_drm_unregister_devices();
576}
577
578module_init(exynos_drm_init);
579module_exit(exynos_drm_exit);
580
581MODULE_AUTHOR("Inki Dae <inki.dae@samsung.com>");
582MODULE_AUTHOR("Joonyoung Shim <jy0922.shim@samsung.com>");
583MODULE_AUTHOR("Seung-Woo Kim <sw0312.kim@samsung.com>");
584MODULE_DESCRIPTION("Samsung SoC DRM Driver");
585MODULE_LICENSE("GPL");
586
