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10#include <linux/component.h>
11#include <linux/pm_runtime.h>
12
13#include <drm/drm_atomic.h>
14#include <drm/drm_atomic_helper.h>
15#include <drm/drm_fb_helper.h>
16#include <drm/drm_probe_helper.h>
17#include <drm/exynos_drm.h>
18
19#include "exynos_drm_drv.h"
20#include "exynos_drm_fb.h"
21#include "exynos_drm_fbdev.h"
22#include "exynos_drm_g2d.h"
23#include "exynos_drm_gem.h"
24#include "exynos_drm_ipp.h"
25#include "exynos_drm_plane.h"
26#include "exynos_drm_vidi.h"
27
28#define DRIVER_NAME "exynos"
29#define DRIVER_DESC "Samsung SoC DRM"
30#define DRIVER_DATE "20180330"
31
32
33
34
35
36
37
38#define DRIVER_MAJOR 1
39#define DRIVER_MINOR 1
40
41static int exynos_drm_open(struct drm_device *dev, struct drm_file *file)
42{
43 struct drm_exynos_file_private *file_priv;
44 int ret;
45
46 file_priv = kzalloc(sizeof(*file_priv), GFP_KERNEL);
47 if (!file_priv)
48 return -ENOMEM;
49
50 file->driver_priv = file_priv;
51 ret = g2d_open(dev, file);
52 if (ret)
53 goto err_file_priv_free;
54
55 return ret;
56
57err_file_priv_free:
58 kfree(file_priv);
59 file->driver_priv = NULL;
60 return ret;
61}
62
63static void exynos_drm_postclose(struct drm_device *dev, struct drm_file *file)
64{
65 g2d_close(dev, file);
66 kfree(file->driver_priv);
67 file->driver_priv = NULL;
68}
69
70static const struct vm_operations_struct exynos_drm_gem_vm_ops = {
71 .fault = exynos_drm_gem_fault,
72 .open = drm_gem_vm_open,
73 .close = drm_gem_vm_close,
74};
75
76static const struct drm_ioctl_desc exynos_ioctls[] = {
77 DRM_IOCTL_DEF_DRV(EXYNOS_GEM_CREATE, exynos_drm_gem_create_ioctl,
78 DRM_AUTH | DRM_RENDER_ALLOW),
79 DRM_IOCTL_DEF_DRV(EXYNOS_GEM_MAP, exynos_drm_gem_map_ioctl,
80 DRM_AUTH | DRM_RENDER_ALLOW),
81 DRM_IOCTL_DEF_DRV(EXYNOS_GEM_GET, exynos_drm_gem_get_ioctl,
82 DRM_RENDER_ALLOW),
83 DRM_IOCTL_DEF_DRV(EXYNOS_VIDI_CONNECTION, vidi_connection_ioctl,
84 DRM_AUTH),
85 DRM_IOCTL_DEF_DRV(EXYNOS_G2D_GET_VER, exynos_g2d_get_ver_ioctl,
86 DRM_AUTH | DRM_RENDER_ALLOW),
87 DRM_IOCTL_DEF_DRV(EXYNOS_G2D_SET_CMDLIST, exynos_g2d_set_cmdlist_ioctl,
88 DRM_AUTH | DRM_RENDER_ALLOW),
89 DRM_IOCTL_DEF_DRV(EXYNOS_G2D_EXEC, exynos_g2d_exec_ioctl,
90 DRM_AUTH | DRM_RENDER_ALLOW),
91 DRM_IOCTL_DEF_DRV(EXYNOS_IPP_GET_RESOURCES,
92 exynos_drm_ipp_get_res_ioctl,
93 DRM_AUTH | DRM_RENDER_ALLOW),
94 DRM_IOCTL_DEF_DRV(EXYNOS_IPP_GET_CAPS, exynos_drm_ipp_get_caps_ioctl,
95 DRM_AUTH | DRM_RENDER_ALLOW),
96 DRM_IOCTL_DEF_DRV(EXYNOS_IPP_GET_LIMITS,
97 exynos_drm_ipp_get_limits_ioctl,
98 DRM_AUTH | DRM_RENDER_ALLOW),
99 DRM_IOCTL_DEF_DRV(EXYNOS_IPP_COMMIT, exynos_drm_ipp_commit_ioctl,
100 DRM_AUTH | DRM_RENDER_ALLOW),
101};
102
103static const struct file_operations exynos_drm_driver_fops = {
104 .owner = THIS_MODULE,
105 .open = drm_open,
106 .mmap = exynos_drm_gem_mmap,
107 .poll = drm_poll,
108 .read = drm_read,
109 .unlocked_ioctl = drm_ioctl,
110 .compat_ioctl = drm_compat_ioctl,
111 .release = drm_release,
112};
113
114static struct drm_driver exynos_drm_driver = {
115 .driver_features = DRIVER_MODESET | DRIVER_GEM | DRIVER_PRIME
116 | DRIVER_ATOMIC | DRIVER_RENDER,
117 .open = exynos_drm_open,
118 .lastclose = drm_fb_helper_lastclose,
119 .postclose = exynos_drm_postclose,
120 .gem_free_object_unlocked = exynos_drm_gem_free_object,
121 .gem_vm_ops = &exynos_drm_gem_vm_ops,
122 .dumb_create = exynos_drm_gem_dumb_create,
123 .prime_handle_to_fd = drm_gem_prime_handle_to_fd,
124 .prime_fd_to_handle = drm_gem_prime_fd_to_handle,
125 .gem_prime_export = drm_gem_prime_export,
126 .gem_prime_import = exynos_drm_gem_prime_import,
127 .gem_prime_get_sg_table = exynos_drm_gem_prime_get_sg_table,
128 .gem_prime_import_sg_table = exynos_drm_gem_prime_import_sg_table,
129 .gem_prime_vmap = exynos_drm_gem_prime_vmap,
130 .gem_prime_vunmap = exynos_drm_gem_prime_vunmap,
131 .gem_prime_mmap = exynos_drm_gem_prime_mmap,
132 .ioctls = exynos_ioctls,
133 .num_ioctls = ARRAY_SIZE(exynos_ioctls),
134 .fops = &exynos_drm_driver_fops,
135 .name = DRIVER_NAME,
136 .desc = DRIVER_DESC,
137 .date = DRIVER_DATE,
138 .major = DRIVER_MAJOR,
139 .minor = DRIVER_MINOR,
140};
141
142static int exynos_drm_suspend(struct device *dev)
143{
144 struct drm_device *drm_dev = dev_get_drvdata(dev);
145
146 return drm_mode_config_helper_suspend(drm_dev);
147}
148
149static void exynos_drm_resume(struct device *dev)
150{
151 struct drm_device *drm_dev = dev_get_drvdata(dev);
152
153 drm_mode_config_helper_resume(drm_dev);
154}
155
156static const struct dev_pm_ops exynos_drm_pm_ops = {
157 .prepare = exynos_drm_suspend,
158 .complete = exynos_drm_resume,
159};
160
161
162static struct platform_driver exynos_drm_platform_driver;
163
164struct exynos_drm_driver_info {
165 struct platform_driver *driver;
166 unsigned int flags;
167};
168
169#define DRM_COMPONENT_DRIVER BIT(0)
170#define DRM_VIRTUAL_DEVICE BIT(1)
171#define DRM_FIMC_DEVICE BIT(2)
172
173#define DRV_PTR(drv, cond) (IS_ENABLED(cond) ? &drv : NULL)
174
175
176
177
178
179static struct exynos_drm_driver_info exynos_drm_drivers[] = {
180 {
181 DRV_PTR(fimd_driver, CONFIG_DRM_EXYNOS_FIMD),
182 DRM_COMPONENT_DRIVER
183 }, {
184 DRV_PTR(exynos5433_decon_driver, CONFIG_DRM_EXYNOS5433_DECON),
185 DRM_COMPONENT_DRIVER
186 }, {
187 DRV_PTR(decon_driver, CONFIG_DRM_EXYNOS7_DECON),
188 DRM_COMPONENT_DRIVER
189 }, {
190 DRV_PTR(mixer_driver, CONFIG_DRM_EXYNOS_MIXER),
191 DRM_COMPONENT_DRIVER
192 }, {
193 DRV_PTR(mic_driver, CONFIG_DRM_EXYNOS_MIC),
194 DRM_COMPONENT_DRIVER
195 }, {
196 DRV_PTR(dp_driver, CONFIG_DRM_EXYNOS_DP),
197 DRM_COMPONENT_DRIVER
198 }, {
199 DRV_PTR(dsi_driver, CONFIG_DRM_EXYNOS_DSI),
200 DRM_COMPONENT_DRIVER
201 }, {
202 DRV_PTR(hdmi_driver, CONFIG_DRM_EXYNOS_HDMI),
203 DRM_COMPONENT_DRIVER
204 }, {
205 DRV_PTR(vidi_driver, CONFIG_DRM_EXYNOS_VIDI),
206 DRM_COMPONENT_DRIVER | DRM_VIRTUAL_DEVICE
207 }, {
208 DRV_PTR(g2d_driver, CONFIG_DRM_EXYNOS_G2D),
209 DRM_COMPONENT_DRIVER
210 }, {
211 DRV_PTR(fimc_driver, CONFIG_DRM_EXYNOS_FIMC),
212 DRM_COMPONENT_DRIVER | DRM_FIMC_DEVICE,
213 }, {
214 DRV_PTR(rotator_driver, CONFIG_DRM_EXYNOS_ROTATOR),
215 DRM_COMPONENT_DRIVER
216 }, {
217 DRV_PTR(scaler_driver, CONFIG_DRM_EXYNOS_SCALER),
218 DRM_COMPONENT_DRIVER
219 }, {
220 DRV_PTR(gsc_driver, CONFIG_DRM_EXYNOS_GSC),
221 DRM_COMPONENT_DRIVER
222 }, {
223 &exynos_drm_platform_driver,
224 DRM_VIRTUAL_DEVICE
225 }
226};
227
228static int compare_dev(struct device *dev, void *data)
229{
230 return dev == (struct device *)data;
231}
232
233static struct component_match *exynos_drm_match_add(struct device *dev)
234{
235 struct component_match *match = NULL;
236 int i;
237
238 for (i = 0; i < ARRAY_SIZE(exynos_drm_drivers); ++i) {
239 struct exynos_drm_driver_info *info = &exynos_drm_drivers[i];
240 struct device *p = NULL, *d;
241
242 if (!info->driver || !(info->flags & DRM_COMPONENT_DRIVER))
243 continue;
244
245 while ((d = bus_find_device(&platform_bus_type, p,
246 &info->driver->driver,
247 (void *)platform_bus_type.match))) {
248 put_device(p);
249
250 if (!(info->flags & DRM_FIMC_DEVICE) ||
251 exynos_drm_check_fimc_device(d) == 0)
252 component_match_add(dev, &match,
253 compare_dev, d);
254 p = d;
255 }
256 put_device(p);
257 }
258
259 return match ?: ERR_PTR(-ENODEV);
260}
261
262static int exynos_drm_bind(struct device *dev)
263{
264 struct exynos_drm_private *private;
265 struct drm_encoder *encoder;
266 struct drm_device *drm;
267 unsigned int clone_mask;
268 int cnt, ret;
269
270 drm = drm_dev_alloc(&exynos_drm_driver, dev);
271 if (IS_ERR(drm))
272 return PTR_ERR(drm);
273
274 private = kzalloc(sizeof(struct exynos_drm_private), GFP_KERNEL);
275 if (!private) {
276 ret = -ENOMEM;
277 goto err_free_drm;
278 }
279
280 init_waitqueue_head(&private->wait);
281 spin_lock_init(&private->lock);
282
283 dev_set_drvdata(dev, drm);
284 drm->dev_private = (void *)private;
285
286 drm_mode_config_init(drm);
287
288 exynos_drm_mode_config_init(drm);
289
290
291 cnt = 0;
292 clone_mask = 0;
293 list_for_each_entry(encoder, &drm->mode_config.encoder_list, head)
294 clone_mask |= (1 << (cnt++));
295
296 list_for_each_entry(encoder, &drm->mode_config.encoder_list, head)
297 encoder->possible_clones = clone_mask;
298
299
300 ret = component_bind_all(drm->dev, drm);
301 if (ret)
302 goto err_mode_config_cleanup;
303
304 ret = drm_vblank_init(drm, drm->mode_config.num_crtc);
305 if (ret)
306 goto err_unbind_all;
307
308 drm_mode_config_reset(drm);
309
310
311
312
313
314
315
316
317
318 drm->irq_enabled = true;
319
320
321 drm_kms_helper_poll_init(drm);
322
323 ret = exynos_drm_fbdev_init(drm);
324 if (ret)
325 goto err_cleanup_poll;
326
327
328 ret = drm_dev_register(drm, 0);
329 if (ret < 0)
330 goto err_cleanup_fbdev;
331
332 return 0;
333
334err_cleanup_fbdev:
335 exynos_drm_fbdev_fini(drm);
336err_cleanup_poll:
337 drm_kms_helper_poll_fini(drm);
338err_unbind_all:
339 component_unbind_all(drm->dev, drm);
340err_mode_config_cleanup:
341 drm_mode_config_cleanup(drm);
342 exynos_drm_cleanup_dma(drm);
343 kfree(private);
344err_free_drm:
345 drm_dev_put(drm);
346
347 return ret;
348}
349
350static void exynos_drm_unbind(struct device *dev)
351{
352 struct drm_device *drm = dev_get_drvdata(dev);
353
354 drm_dev_unregister(drm);
355
356 exynos_drm_fbdev_fini(drm);
357 drm_kms_helper_poll_fini(drm);
358
359 component_unbind_all(drm->dev, drm);
360 drm_mode_config_cleanup(drm);
361 exynos_drm_cleanup_dma(drm);
362
363 kfree(drm->dev_private);
364 drm->dev_private = NULL;
365 dev_set_drvdata(dev, NULL);
366
367 drm_dev_put(drm);
368}
369
370static const struct component_master_ops exynos_drm_ops = {
371 .bind = exynos_drm_bind,
372 .unbind = exynos_drm_unbind,
373};
374
375static int exynos_drm_platform_probe(struct platform_device *pdev)
376{
377 struct component_match *match;
378
379 pdev->dev.coherent_dma_mask = DMA_BIT_MASK(32);
380
381 match = exynos_drm_match_add(&pdev->dev);
382 if (IS_ERR(match))
383 return PTR_ERR(match);
384
385 return component_master_add_with_match(&pdev->dev, &exynos_drm_ops,
386 match);
387}
388
389static int exynos_drm_platform_remove(struct platform_device *pdev)
390{
391 component_master_del(&pdev->dev, &exynos_drm_ops);
392 return 0;
393}
394
395static struct platform_driver exynos_drm_platform_driver = {
396 .probe = exynos_drm_platform_probe,
397 .remove = exynos_drm_platform_remove,
398 .driver = {
399 .name = "exynos-drm",
400 .pm = &exynos_drm_pm_ops,
401 },
402};
403
404static void exynos_drm_unregister_devices(void)
405{
406 int i;
407
408 for (i = ARRAY_SIZE(exynos_drm_drivers) - 1; i >= 0; --i) {
409 struct exynos_drm_driver_info *info = &exynos_drm_drivers[i];
410 struct device *dev;
411
412 if (!info->driver || !(info->flags & DRM_VIRTUAL_DEVICE))
413 continue;
414
415 while ((dev = bus_find_device(&platform_bus_type, NULL,
416 &info->driver->driver,
417 (void *)platform_bus_type.match))) {
418 put_device(dev);
419 platform_device_unregister(to_platform_device(dev));
420 }
421 }
422}
423
424static int exynos_drm_register_devices(void)
425{
426 struct platform_device *pdev;
427 int i;
428
429 for (i = 0; i < ARRAY_SIZE(exynos_drm_drivers); ++i) {
430 struct exynos_drm_driver_info *info = &exynos_drm_drivers[i];
431
432 if (!info->driver || !(info->flags & DRM_VIRTUAL_DEVICE))
433 continue;
434
435 pdev = platform_device_register_simple(
436 info->driver->driver.name, -1, NULL, 0);
437 if (IS_ERR(pdev))
438 goto fail;
439 }
440
441 return 0;
442fail:
443 exynos_drm_unregister_devices();
444 return PTR_ERR(pdev);
445}
446
447static void exynos_drm_unregister_drivers(void)
448{
449 int i;
450
451 for (i = ARRAY_SIZE(exynos_drm_drivers) - 1; i >= 0; --i) {
452 struct exynos_drm_driver_info *info = &exynos_drm_drivers[i];
453
454 if (!info->driver)
455 continue;
456
457 platform_driver_unregister(info->driver);
458 }
459}
460
461static int exynos_drm_register_drivers(void)
462{
463 int i, ret;
464
465 for (i = 0; i < ARRAY_SIZE(exynos_drm_drivers); ++i) {
466 struct exynos_drm_driver_info *info = &exynos_drm_drivers[i];
467
468 if (!info->driver)
469 continue;
470
471 ret = platform_driver_register(info->driver);
472 if (ret)
473 goto fail;
474 }
475 return 0;
476fail:
477 exynos_drm_unregister_drivers();
478 return ret;
479}
480
481static int exynos_drm_init(void)
482{
483 int ret;
484
485 ret = exynos_drm_register_devices();
486 if (ret)
487 return ret;
488
489 ret = exynos_drm_register_drivers();
490 if (ret)
491 goto err_unregister_pdevs;
492
493 return 0;
494
495err_unregister_pdevs:
496 exynos_drm_unregister_devices();
497
498 return ret;
499}
500
501static void exynos_drm_exit(void)
502{
503 exynos_drm_unregister_drivers();
504 exynos_drm_unregister_devices();
505}
506
507module_init(exynos_drm_init);
508module_exit(exynos_drm_exit);
509
510MODULE_AUTHOR("Inki Dae <inki.dae@samsung.com>");
511MODULE_AUTHOR("Joonyoung Shim <jy0922.shim@samsung.com>");
512MODULE_AUTHOR("Seung-Woo Kim <sw0312.kim@samsung.com>");
513MODULE_DESCRIPTION("Samsung SoC DRM Driver");
514MODULE_LICENSE("GPL");
515
