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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 <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
20#include <linux/component.h>
21
22#include <drm/exynos_drm.h>
23
24#include "exynos_drm_drv.h"
25#include "exynos_drm_crtc.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_ipp.h"
33#include "exynos_drm_iommu.h"
34
35#define DRIVER_NAME "exynos"
36#define DRIVER_DESC "Samsung SoC DRM"
37#define DRIVER_DATE "20110530"
38#define DRIVER_MAJOR 1
39#define DRIVER_MINOR 0
40
41struct exynos_atomic_commit {
42 struct work_struct work;
43 struct drm_device *dev;
44 struct drm_atomic_state *state;
45 u32 crtcs;
46};
47
48static void exynos_atomic_wait_for_commit(struct drm_atomic_state *state)
49{
50 struct drm_crtc_state *crtc_state;
51 struct drm_crtc *crtc;
52 int i, ret;
53
54 for_each_crtc_in_state(state, crtc, crtc_state, i) {
55 struct exynos_drm_crtc *exynos_crtc = to_exynos_crtc(crtc);
56
57 if (!crtc->state->enable)
58 continue;
59
60 ret = drm_crtc_vblank_get(crtc);
61 if (ret)
62 continue;
63
64 exynos_drm_crtc_wait_pending_update(exynos_crtc);
65 drm_crtc_vblank_put(crtc);
66 }
67}
68
69static void exynos_atomic_commit_complete(struct exynos_atomic_commit *commit)
70{
71 struct drm_device *dev = commit->dev;
72 struct exynos_drm_private *priv = dev->dev_private;
73 struct drm_atomic_state *state = commit->state;
74 struct drm_plane *plane;
75 struct drm_crtc *crtc;
76 struct drm_plane_state *plane_state;
77 struct drm_crtc_state *crtc_state;
78 int i;
79
80 drm_atomic_helper_commit_modeset_disables(dev, state);
81
82 drm_atomic_helper_commit_modeset_enables(dev, state);
83
84 /*
85 * Exynos can't update planes with CRTCs and encoders disabled,
86 * its updates routines, specially for FIMD, requires the clocks
87 * to be enabled. So it is necessary to handle the modeset operations
88 * *before* the commit_planes() step, this way it will always
89 * have the relevant clocks enabled to perform the update.
90 */
91
92 for_each_crtc_in_state(state, crtc, crtc_state, i) {
93 struct exynos_drm_crtc *exynos_crtc = to_exynos_crtc(crtc);
94
95 atomic_set(&exynos_crtc->pending_update, 0);
96 }
97
98 for_each_plane_in_state(state, plane, plane_state, i) {
99 struct exynos_drm_crtc *exynos_crtc =
100 to_exynos_crtc(plane->crtc);
101
102 if (!plane->crtc)
103 continue;
104
105 atomic_inc(&exynos_crtc->pending_update);
106 }
107
108 drm_atomic_helper_commit_planes(dev, state, false);
109
110 exynos_atomic_wait_for_commit(state);
111
112 drm_atomic_helper_cleanup_planes(dev, state);
113
114 drm_atomic_state_free(state);
115
116 spin_lock(&priv->lock);
117 priv->pending &= ~commit->crtcs;
118 spin_unlock(&priv->lock);
119
120 wake_up_all(&priv->wait);
121
122 kfree(commit);
123}
124
125static void exynos_drm_atomic_work(struct work_struct *work)
126{
127 struct exynos_atomic_commit *commit = container_of(work,
128 struct exynos_atomic_commit, work);
129
130 exynos_atomic_commit_complete(commit);
131}
132
133static struct device *exynos_drm_get_dma_device(void);
134
135static int exynos_drm_load(struct drm_device *dev, unsigned long flags)
136{
137 struct exynos_drm_private *private;
138 struct drm_encoder *encoder;
139 unsigned int clone_mask;
140 int cnt, ret;
141
142 private = kzalloc(sizeof(struct exynos_drm_private), GFP_KERNEL);
143 if (!private)
144 return -ENOMEM;
145
146 init_waitqueue_head(&private->wait);
147 spin_lock_init(&private->lock);
148
149 dev_set_drvdata(dev->dev, dev);
150 dev->dev_private = (void *)private;
151
152 /* the first real CRTC device is used for all dma mapping operations */
153 private->dma_dev = exynos_drm_get_dma_device();
154 if (!private->dma_dev) {
155 DRM_ERROR("no device found for DMA mapping operations.\n");
156 ret = -ENODEV;
157 goto err_free_private;
158 }
159 DRM_INFO("Exynos DRM: using %s device for DMA mapping operations\n",
160 dev_name(private->dma_dev));
161
162 /*
163 * create mapping to manage iommu table and set a pointer to iommu
164 * mapping structure to iommu_mapping of private data.
165 * also this iommu_mapping can be used to check if iommu is supported
166 * or not.
167 */
168 ret = drm_create_iommu_mapping(dev);
169 if (ret < 0) {
170 DRM_ERROR("failed to create iommu mapping.\n");
171 goto err_free_private;
172 }
173
174 drm_mode_config_init(dev);
175
176 exynos_drm_mode_config_init(dev);
177
178 /* setup possible_clones. */
179 cnt = 0;
180 clone_mask = 0;
181 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head)
182 clone_mask |= (1 << (cnt++));
183
184 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head)
185 encoder->possible_clones = clone_mask;
186
187 platform_set_drvdata(dev->platformdev, dev);
188
189 /* Try to bind all sub drivers. */
190 ret = component_bind_all(dev->dev, dev);
191 if (ret)
192 goto err_mode_config_cleanup;
193
194 ret = drm_vblank_init(dev, dev->mode_config.num_crtc);
195 if (ret)
196 goto err_unbind_all;
197
198 /* Probe non kms sub drivers and virtual display driver. */
199 ret = exynos_drm_device_subdrv_probe(dev);
200 if (ret)
201 goto err_cleanup_vblank;
202
203 drm_mode_config_reset(dev);
204
205 /*
206 * enable drm irq mode.
207 * - with irq_enabled = true, we can use the vblank feature.
208 *
209 * P.S. note that we wouldn't use drm irq handler but
210 * just specific driver own one instead because
211 * drm framework supports only one irq handler.
212 */
213 dev->irq_enabled = true;
214
215 /*
216 * with vblank_disable_allowed = true, vblank interrupt will be disabled
217 * by drm timer once a current process gives up ownership of
218 * vblank event.(after drm_vblank_put function is called)
219 */
220 dev->vblank_disable_allowed = true;
221
222 /* init kms poll for handling hpd */
223 drm_kms_helper_poll_init(dev);
224
225 /* force connectors detection */
226 drm_helper_hpd_irq_event(dev);
227
228 return 0;
229
230err_cleanup_vblank:
231 drm_vblank_cleanup(dev);
232err_unbind_all:
233 component_unbind_all(dev->dev, dev);
234err_mode_config_cleanup:
235 drm_mode_config_cleanup(dev);
236 drm_release_iommu_mapping(dev);
237err_free_private:
238 kfree(private);
239
240 return ret;
241}
242
243static int exynos_drm_unload(struct drm_device *dev)
244{
245 exynos_drm_device_subdrv_remove(dev);
246
247 exynos_drm_fbdev_fini(dev);
248 drm_kms_helper_poll_fini(dev);
249
250 drm_vblank_cleanup(dev);
251 component_unbind_all(dev->dev, dev);
252 drm_mode_config_cleanup(dev);
253 drm_release_iommu_mapping(dev);
254
255 kfree(dev->dev_private);
256 dev->dev_private = NULL;
257
258 return 0;
259}
260
261static int commit_is_pending(struct exynos_drm_private *priv, u32 crtcs)
262{
263 bool pending;
264
265 spin_lock(&priv->lock);
266 pending = priv->pending & crtcs;
267 spin_unlock(&priv->lock);
268
269 return pending;
270}
271
272int exynos_atomic_commit(struct drm_device *dev, struct drm_atomic_state *state,
273 bool async)
274{
275 struct exynos_drm_private *priv = dev->dev_private;
276 struct exynos_atomic_commit *commit;
277 int i, ret;
278
279 commit = kzalloc(sizeof(*commit), GFP_KERNEL);
280 if (!commit)
281 return -ENOMEM;
282
283 ret = drm_atomic_helper_prepare_planes(dev, state);
284 if (ret) {
285 kfree(commit);
286 return ret;
287 }
288
289 /* This is the point of no return */
290
291 INIT_WORK(&commit->work, exynos_drm_atomic_work);
292 commit->dev = dev;
293 commit->state = state;
294
295 /* Wait until all affected CRTCs have completed previous commits and
296 * mark them as pending.
297 */
298 for (i = 0; i < dev->mode_config.num_crtc; ++i) {
299 if (state->crtcs[i])
300 commit->crtcs |= 1 << drm_crtc_index(state->crtcs[i]);
301 }
302
303 wait_event(priv->wait, !commit_is_pending(priv, commit->crtcs));
304
305 spin_lock(&priv->lock);
306 priv->pending |= commit->crtcs;
307 spin_unlock(&priv->lock);
308
309 drm_atomic_helper_swap_state(dev, state);
310
311 if (async)
312 schedule_work(&commit->work);
313 else
314 exynos_atomic_commit_complete(commit);
315
316 return 0;
317}
318
319static int exynos_drm_open(struct drm_device *dev, struct drm_file *file)
320{
321 struct drm_exynos_file_private *file_priv;
322 int ret;
323
324 file_priv = kzalloc(sizeof(*file_priv), GFP_KERNEL);
325 if (!file_priv)
326 return -ENOMEM;
327
328 file->driver_priv = file_priv;
329
330 ret = exynos_drm_subdrv_open(dev, file);
331 if (ret)
332 goto err_file_priv_free;
333
334 return ret;
335
336err_file_priv_free:
337 kfree(file_priv);
338 file->driver_priv = NULL;
339 return ret;
340}
341
342static void exynos_drm_preclose(struct drm_device *dev,
343 struct drm_file *file)
344{
345 struct drm_crtc *crtc;
346
347 exynos_drm_subdrv_close(dev, file);
348
349 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
350 exynos_drm_crtc_cancel_page_flip(crtc, file);
351}
352
353static void exynos_drm_postclose(struct drm_device *dev, struct drm_file *file)
354{
355 kfree(file->driver_priv);
356 file->driver_priv = NULL;
357}
358
359static void exynos_drm_lastclose(struct drm_device *dev)
360{
361 exynos_drm_fbdev_restore_mode(dev);
362}
363
364static const struct vm_operations_struct exynos_drm_gem_vm_ops = {
365 .fault = exynos_drm_gem_fault,
366 .open = drm_gem_vm_open,
367 .close = drm_gem_vm_close,
368};
369
370static const struct drm_ioctl_desc exynos_ioctls[] = {
371 DRM_IOCTL_DEF_DRV(EXYNOS_GEM_CREATE, exynos_drm_gem_create_ioctl,
372 DRM_AUTH | DRM_RENDER_ALLOW),
373 DRM_IOCTL_DEF_DRV(EXYNOS_GEM_MAP, exynos_drm_gem_map_ioctl,
374 DRM_AUTH | DRM_RENDER_ALLOW),
375 DRM_IOCTL_DEF_DRV(EXYNOS_GEM_GET, exynos_drm_gem_get_ioctl,
376 DRM_RENDER_ALLOW),
377 DRM_IOCTL_DEF_DRV(EXYNOS_VIDI_CONNECTION, vidi_connection_ioctl,
378 DRM_AUTH),
379 DRM_IOCTL_DEF_DRV(EXYNOS_G2D_GET_VER, exynos_g2d_get_ver_ioctl,
380 DRM_AUTH | DRM_RENDER_ALLOW),
381 DRM_IOCTL_DEF_DRV(EXYNOS_G2D_SET_CMDLIST, exynos_g2d_set_cmdlist_ioctl,
382 DRM_AUTH | DRM_RENDER_ALLOW),
383 DRM_IOCTL_DEF_DRV(EXYNOS_G2D_EXEC, exynos_g2d_exec_ioctl,
384 DRM_AUTH | DRM_RENDER_ALLOW),
385 DRM_IOCTL_DEF_DRV(EXYNOS_IPP_GET_PROPERTY, exynos_drm_ipp_get_property,
386 DRM_AUTH | DRM_RENDER_ALLOW),
387 DRM_IOCTL_DEF_DRV(EXYNOS_IPP_SET_PROPERTY, exynos_drm_ipp_set_property,
388 DRM_AUTH | DRM_RENDER_ALLOW),
389 DRM_IOCTL_DEF_DRV(EXYNOS_IPP_QUEUE_BUF, exynos_drm_ipp_queue_buf,
390 DRM_AUTH | DRM_RENDER_ALLOW),
391 DRM_IOCTL_DEF_DRV(EXYNOS_IPP_CMD_CTRL, exynos_drm_ipp_cmd_ctrl,
392 DRM_AUTH | DRM_RENDER_ALLOW),
393};
394
395static const struct file_operations exynos_drm_driver_fops = {
396 .owner = THIS_MODULE,
397 .open = drm_open,
398 .mmap = exynos_drm_gem_mmap,
399 .poll = drm_poll,
400 .read = drm_read,
401 .unlocked_ioctl = drm_ioctl,
402#ifdef CONFIG_COMPAT
403 .compat_ioctl = drm_compat_ioctl,
404#endif
405 .release = drm_release,
406};
407
408static struct drm_driver exynos_drm_driver = {
409 .driver_features = DRIVER_MODESET | DRIVER_GEM | DRIVER_PRIME
410 | DRIVER_ATOMIC | DRIVER_RENDER,
411 .load = exynos_drm_load,
412 .unload = exynos_drm_unload,
413 .open = exynos_drm_open,
414 .preclose = exynos_drm_preclose,
415 .lastclose = exynos_drm_lastclose,
416 .postclose = exynos_drm_postclose,
417 .set_busid = drm_platform_set_busid,
418 .get_vblank_counter = drm_vblank_no_hw_counter,
419 .enable_vblank = exynos_drm_crtc_enable_vblank,
420 .disable_vblank = exynos_drm_crtc_disable_vblank,
421 .gem_free_object = exynos_drm_gem_free_object,
422 .gem_vm_ops = &exynos_drm_gem_vm_ops,
423 .dumb_create = exynos_drm_gem_dumb_create,
424 .dumb_map_offset = exynos_drm_gem_dumb_map_offset,
425 .dumb_destroy = drm_gem_dumb_destroy,
426 .prime_handle_to_fd = drm_gem_prime_handle_to_fd,
427 .prime_fd_to_handle = drm_gem_prime_fd_to_handle,
428 .gem_prime_export = drm_gem_prime_export,
429 .gem_prime_import = drm_gem_prime_import,
430 .gem_prime_get_sg_table = exynos_drm_gem_prime_get_sg_table,
431 .gem_prime_import_sg_table = exynos_drm_gem_prime_import_sg_table,
432 .gem_prime_vmap = exynos_drm_gem_prime_vmap,
433 .gem_prime_vunmap = exynos_drm_gem_prime_vunmap,
434 .ioctls = exynos_ioctls,
435 .num_ioctls = ARRAY_SIZE(exynos_ioctls),
436 .fops = &exynos_drm_driver_fops,
437 .name = DRIVER_NAME,
438 .desc = DRIVER_DESC,
439 .date = DRIVER_DATE,
440 .major = DRIVER_MAJOR,
441 .minor = DRIVER_MINOR,
442};
443
444#ifdef CONFIG_PM_SLEEP
445static int exynos_drm_suspend(struct device *dev)
446{
447 struct drm_device *drm_dev = dev_get_drvdata(dev);
448 struct drm_connector *connector;
449
450 if (pm_runtime_suspended(dev) || !drm_dev)
451 return 0;
452
453 drm_modeset_lock_all(drm_dev);
454 drm_for_each_connector(connector, drm_dev) {
455 int old_dpms = connector->dpms;
456
457 if (connector->funcs->dpms)
458 connector->funcs->dpms(connector, DRM_MODE_DPMS_OFF);
459
460 /* Set the old mode back to the connector for resume */
461 connector->dpms = old_dpms;
462 }
463 drm_modeset_unlock_all(drm_dev);
464
465 return 0;
466}
467
468static int exynos_drm_resume(struct device *dev)
469{
470 struct drm_device *drm_dev = dev_get_drvdata(dev);
471 struct drm_connector *connector;
472
473 if (pm_runtime_suspended(dev) || !drm_dev)
474 return 0;
475
476 drm_modeset_lock_all(drm_dev);
477 drm_for_each_connector(connector, drm_dev) {
478 if (connector->funcs->dpms) {
479 int dpms = connector->dpms;
480
481 connector->dpms = DRM_MODE_DPMS_OFF;
482 connector->funcs->dpms(connector, dpms);
483 }
484 }
485 drm_modeset_unlock_all(drm_dev);
486
487 return 0;
488}
489#endif
490
491static const struct dev_pm_ops exynos_drm_pm_ops = {
492 SET_SYSTEM_SLEEP_PM_OPS(exynos_drm_suspend, exynos_drm_resume)
493};
494
495/* forward declaration */
496static struct platform_driver exynos_drm_platform_driver;
497
498struct exynos_drm_driver_info {
499 struct platform_driver *driver;
500 unsigned int flags;
501};
502
503#define DRM_COMPONENT_DRIVER BIT(0) /* supports component framework */
504#define DRM_VIRTUAL_DEVICE BIT(1) /* create virtual platform device */
505#define DRM_DMA_DEVICE BIT(2) /* can be used for dma allocations */
506
507#define DRV_PTR(drv, cond) (IS_ENABLED(cond) ? &drv : NULL)
508
509/*
510 * Connector drivers should not be placed before associated crtc drivers,
511 * because connector requires pipe number of its crtc during initialization.
512 */
513static struct exynos_drm_driver_info exynos_drm_drivers[] = {
514 {
515 DRV_PTR(fimd_driver, CONFIG_DRM_EXYNOS_FIMD),
516 DRM_COMPONENT_DRIVER | DRM_DMA_DEVICE
517 }, {
518 DRV_PTR(exynos5433_decon_driver, CONFIG_DRM_EXYNOS5433_DECON),
519 DRM_COMPONENT_DRIVER | DRM_DMA_DEVICE
520 }, {
521 DRV_PTR(decon_driver, CONFIG_DRM_EXYNOS7_DECON),
522 DRM_COMPONENT_DRIVER | DRM_DMA_DEVICE
523 }, {
524 DRV_PTR(mixer_driver, CONFIG_DRM_EXYNOS_MIXER),
525 DRM_COMPONENT_DRIVER | DRM_DMA_DEVICE
526 }, {
527 DRV_PTR(mic_driver, CONFIG_DRM_EXYNOS_MIC),
528 DRM_COMPONENT_DRIVER
529 }, {
530 DRV_PTR(dp_driver, CONFIG_DRM_EXYNOS_DP),
531 DRM_COMPONENT_DRIVER
532 }, {
533 DRV_PTR(dsi_driver, CONFIG_DRM_EXYNOS_DSI),
534 DRM_COMPONENT_DRIVER
535 }, {
536 DRV_PTR(hdmi_driver, CONFIG_DRM_EXYNOS_HDMI),
537 DRM_COMPONENT_DRIVER
538 }, {
539 DRV_PTR(vidi_driver, CONFIG_DRM_EXYNOS_VIDI),
540 DRM_COMPONENT_DRIVER | DRM_VIRTUAL_DEVICE
541 }, {
542 DRV_PTR(g2d_driver, CONFIG_DRM_EXYNOS_G2D),
543 }, {
544 DRV_PTR(fimc_driver, CONFIG_DRM_EXYNOS_FIMC),
545 }, {
546 DRV_PTR(rotator_driver, CONFIG_DRM_EXYNOS_ROTATOR),
547 }, {
548 DRV_PTR(gsc_driver, CONFIG_DRM_EXYNOS_GSC),
549 }, {
550 DRV_PTR(ipp_driver, CONFIG_DRM_EXYNOS_IPP),
551 DRM_VIRTUAL_DEVICE
552 }, {
553 &exynos_drm_platform_driver,
554 DRM_VIRTUAL_DEVICE
555 }
556};
557
558static int compare_dev(struct device *dev, void *data)
559{
560 return dev == (struct device *)data;
561}
562
563static struct component_match *exynos_drm_match_add(struct device *dev)
564{
565 struct component_match *match = NULL;
566 int i;
567
568 for (i = 0; i < ARRAY_SIZE(exynos_drm_drivers); ++i) {
569 struct exynos_drm_driver_info *info = &exynos_drm_drivers[i];
570 struct device *p = NULL, *d;
571
572 if (!info->driver || !(info->flags & DRM_COMPONENT_DRIVER))
573 continue;
574
575 while ((d = bus_find_device(&platform_bus_type, p,
576 &info->driver->driver,
577 (void *)platform_bus_type.match))) {
578 put_device(p);
579 component_match_add(dev, &match, compare_dev, d);
580 p = d;
581 }
582 put_device(p);
583 }
584
585 return match ?: ERR_PTR(-ENODEV);
586}
587
588static int exynos_drm_bind(struct device *dev)
589{
590 return drm_platform_init(&exynos_drm_driver, to_platform_device(dev));
591}
592
593static void exynos_drm_unbind(struct device *dev)
594{
595 drm_put_dev(dev_get_drvdata(dev));
596}
597
598static const struct component_master_ops exynos_drm_ops = {
599 .bind = exynos_drm_bind,
600 .unbind = exynos_drm_unbind,
601};
602
603static int exynos_drm_platform_probe(struct platform_device *pdev)
604{
605 struct component_match *match;
606
607 pdev->dev.coherent_dma_mask = DMA_BIT_MASK(32);
608 exynos_drm_driver.num_ioctls = ARRAY_SIZE(exynos_ioctls);
609
610 match = exynos_drm_match_add(&pdev->dev);
611 if (IS_ERR(match))
612 return PTR_ERR(match);
613
614 return component_master_add_with_match(&pdev->dev, &exynos_drm_ops,
615 match);
616}
617
618static int exynos_drm_platform_remove(struct platform_device *pdev)
619{
620 component_master_del(&pdev->dev, &exynos_drm_ops);
621 return 0;
622}
623
624static struct platform_driver exynos_drm_platform_driver = {
625 .probe = exynos_drm_platform_probe,
626 .remove = exynos_drm_platform_remove,
627 .driver = {
628 .name = "exynos-drm",
629 .pm = &exynos_drm_pm_ops,
630 },
631};
632
633static struct device *exynos_drm_get_dma_device(void)
634{
635 int i;
636
637 for (i = 0; i < ARRAY_SIZE(exynos_drm_drivers); ++i) {
638 struct exynos_drm_driver_info *info = &exynos_drm_drivers[i];
639 struct device *dev;
640
641 if (!info->driver || !(info->flags & DRM_DMA_DEVICE))
642 continue;
643
644 while ((dev = bus_find_device(&platform_bus_type, NULL,
645 &info->driver->driver,
646 (void *)platform_bus_type.match))) {
647 put_device(dev);
648 return dev;
649 }
650 }
651 return NULL;
652}
653
654static void exynos_drm_unregister_devices(void)
655{
656 int i;
657
658 for (i = ARRAY_SIZE(exynos_drm_drivers) - 1; i >= 0; --i) {
659 struct exynos_drm_driver_info *info = &exynos_drm_drivers[i];
660 struct device *dev;
661
662 if (!info->driver || !(info->flags & DRM_VIRTUAL_DEVICE))
663 continue;
664
665 while ((dev = bus_find_device(&platform_bus_type, NULL,
666 &info->driver->driver,
667 (void *)platform_bus_type.match))) {
668 put_device(dev);
669 platform_device_unregister(to_platform_device(dev));
670 }
671 }
672}
673
674static int exynos_drm_register_devices(void)
675{
676 struct platform_device *pdev;
677 int i;
678
679 for (i = 0; i < ARRAY_SIZE(exynos_drm_drivers); ++i) {
680 struct exynos_drm_driver_info *info = &exynos_drm_drivers[i];
681
682 if (!info->driver || !(info->flags & DRM_VIRTUAL_DEVICE))
683 continue;
684
685 pdev = platform_device_register_simple(
686 info->driver->driver.name, -1, NULL, 0);
687 if (IS_ERR(pdev))
688 goto fail;
689 }
690
691 return 0;
692fail:
693 exynos_drm_unregister_devices();
694 return PTR_ERR(pdev);
695}
696
697static void exynos_drm_unregister_drivers(void)
698{
699 int i;
700
701 for (i = ARRAY_SIZE(exynos_drm_drivers) - 1; i >= 0; --i) {
702 struct exynos_drm_driver_info *info = &exynos_drm_drivers[i];
703
704 if (!info->driver)
705 continue;
706
707 platform_driver_unregister(info->driver);
708 }
709}
710
711static int exynos_drm_register_drivers(void)
712{
713 int i, ret;
714
715 for (i = 0; i < ARRAY_SIZE(exynos_drm_drivers); ++i) {
716 struct exynos_drm_driver_info *info = &exynos_drm_drivers[i];
717
718 if (!info->driver)
719 continue;
720
721 ret = platform_driver_register(info->driver);
722 if (ret)
723 goto fail;
724 }
725 return 0;
726fail:
727 exynos_drm_unregister_drivers();
728 return ret;
729}
730
731static int exynos_drm_init(void)
732{
733 int ret;
734
735 ret = exynos_drm_register_devices();
736 if (ret)
737 return ret;
738
739 ret = exynos_drm_register_drivers();
740 if (ret)
741 goto err_unregister_pdevs;
742
743 return 0;
744
745err_unregister_pdevs:
746 exynos_drm_unregister_devices();
747
748 return ret;
749}
750
751static void exynos_drm_exit(void)
752{
753 exynos_drm_unregister_drivers();
754 exynos_drm_unregister_devices();
755}
756
757module_init(exynos_drm_init);
758module_exit(exynos_drm_exit);
759
760MODULE_AUTHOR("Inki Dae <inki.dae@samsung.com>");
761MODULE_AUTHOR("Joonyoung Shim <jy0922.shim@samsung.com>");
762MODULE_AUTHOR("Seung-Woo Kim <sw0312.kim@samsung.com>");
763MODULE_DESCRIPTION("Samsung SoC DRM Driver");
764MODULE_LICENSE("GPL");
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#include "exynos_drm_dmabuf.h"
43#include "exynos_drm_g2d.h"
44
45#define DRIVER_NAME "exynos"
46#define DRIVER_DESC "Samsung SoC DRM"
47#define DRIVER_DATE "20110530"
48#define DRIVER_MAJOR 1
49#define DRIVER_MINOR 0
50
51#define VBLANK_OFF_DELAY 50000
52
53static int exynos_drm_load(struct drm_device *dev, unsigned long flags)
54{
55 struct exynos_drm_private *private;
56 int ret;
57 int nr;
58
59 DRM_DEBUG_DRIVER("%s\n", __FILE__);
60
61 private = kzalloc(sizeof(struct exynos_drm_private), GFP_KERNEL);
62 if (!private) {
63 DRM_ERROR("failed to allocate private\n");
64 return -ENOMEM;
65 }
66
67 INIT_LIST_HEAD(&private->pageflip_event_list);
68 dev->dev_private = (void *)private;
69
70 drm_mode_config_init(dev);
71
72 /* init kms poll for handling hpd */
73 drm_kms_helper_poll_init(dev);
74
75 exynos_drm_mode_config_init(dev);
76
77 /*
78 * EXYNOS4 is enough to have two CRTCs and each crtc would be used
79 * without dependency of hardware.
80 */
81 for (nr = 0; nr < MAX_CRTC; nr++) {
82 ret = exynos_drm_crtc_create(dev, nr);
83 if (ret)
84 goto err_crtc;
85 }
86
87 for (nr = 0; nr < MAX_PLANE; nr++) {
88 ret = exynos_plane_init(dev, nr);
89 if (ret)
90 goto err_crtc;
91 }
92
93 ret = drm_vblank_init(dev, MAX_CRTC);
94 if (ret)
95 goto err_crtc;
96
97 /*
98 * probe sub drivers such as display controller and hdmi driver,
99 * that were registered at probe() of platform driver
100 * to the sub driver and create encoder and connector for them.
101 */
102 ret = exynos_drm_device_register(dev);
103 if (ret)
104 goto err_vblank;
105
106 /* setup possible_clones. */
107 exynos_drm_encoder_setup(dev);
108
109 /*
110 * create and configure fb helper and also exynos specific
111 * fbdev object.
112 */
113 ret = exynos_drm_fbdev_init(dev);
114 if (ret) {
115 DRM_ERROR("failed to initialize drm fbdev\n");
116 goto err_drm_device;
117 }
118
119 drm_vblank_offdelay = VBLANK_OFF_DELAY;
120
121 return 0;
122
123err_drm_device:
124 exynos_drm_device_unregister(dev);
125err_vblank:
126 drm_vblank_cleanup(dev);
127err_crtc:
128 drm_mode_config_cleanup(dev);
129 kfree(private);
130
131 return ret;
132}
133
134static int exynos_drm_unload(struct drm_device *dev)
135{
136 DRM_DEBUG_DRIVER("%s\n", __FILE__);
137
138 exynos_drm_fbdev_fini(dev);
139 exynos_drm_device_unregister(dev);
140 drm_vblank_cleanup(dev);
141 drm_kms_helper_poll_fini(dev);
142 drm_mode_config_cleanup(dev);
143 kfree(dev->dev_private);
144
145 dev->dev_private = NULL;
146
147 return 0;
148}
149
150static int exynos_drm_open(struct drm_device *dev, struct drm_file *file)
151{
152 struct drm_exynos_file_private *file_priv;
153
154 DRM_DEBUG_DRIVER("%s\n", __FILE__);
155
156 file_priv = kzalloc(sizeof(*file_priv), GFP_KERNEL);
157 if (!file_priv)
158 return -ENOMEM;
159
160 drm_prime_init_file_private(&file->prime);
161 file->driver_priv = file_priv;
162
163 return exynos_drm_subdrv_open(dev, file);
164}
165
166static void exynos_drm_preclose(struct drm_device *dev,
167 struct drm_file *file)
168{
169 struct exynos_drm_private *private = dev->dev_private;
170 struct drm_pending_vblank_event *e, *t;
171 unsigned long flags;
172
173 DRM_DEBUG_DRIVER("%s\n", __FILE__);
174
175 /* release events of current file */
176 spin_lock_irqsave(&dev->event_lock, flags);
177 list_for_each_entry_safe(e, t, &private->pageflip_event_list,
178 base.link) {
179 if (e->base.file_priv == file) {
180 list_del(&e->base.link);
181 e->base.destroy(&e->base);
182 }
183 }
184 drm_prime_destroy_file_private(&file->prime);
185 spin_unlock_irqrestore(&dev->event_lock, flags);
186
187 exynos_drm_subdrv_close(dev, file);
188}
189
190static void exynos_drm_postclose(struct drm_device *dev, struct drm_file *file)
191{
192 DRM_DEBUG_DRIVER("%s\n", __FILE__);
193
194 if (!file->driver_priv)
195 return;
196
197 kfree(file->driver_priv);
198 file->driver_priv = NULL;
199}
200
201static void exynos_drm_lastclose(struct drm_device *dev)
202{
203 DRM_DEBUG_DRIVER("%s\n", __FILE__);
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 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_PLANE_SET_ZPOS, exynos_plane_set_zpos_ioctl,
225 DRM_UNLOCKED | DRM_AUTH),
226 DRM_IOCTL_DEF_DRV(EXYNOS_VIDI_CONNECTION,
227 vidi_connection_ioctl, DRM_UNLOCKED | DRM_AUTH),
228 DRM_IOCTL_DEF_DRV(EXYNOS_G2D_GET_VER,
229 exynos_g2d_get_ver_ioctl, DRM_UNLOCKED | DRM_AUTH),
230 DRM_IOCTL_DEF_DRV(EXYNOS_G2D_SET_CMDLIST,
231 exynos_g2d_set_cmdlist_ioctl, DRM_UNLOCKED | DRM_AUTH),
232 DRM_IOCTL_DEF_DRV(EXYNOS_G2D_EXEC,
233 exynos_g2d_exec_ioctl, DRM_UNLOCKED | DRM_AUTH),
234};
235
236static const struct file_operations exynos_drm_driver_fops = {
237 .owner = THIS_MODULE,
238 .open = drm_open,
239 .mmap = exynos_drm_gem_mmap,
240 .poll = drm_poll,
241 .read = drm_read,
242 .unlocked_ioctl = drm_ioctl,
243 .release = drm_release,
244};
245
246static struct drm_driver exynos_drm_driver = {
247 .driver_features = DRIVER_HAVE_IRQ | DRIVER_MODESET |
248 DRIVER_GEM | DRIVER_PRIME,
249 .load = exynos_drm_load,
250 .unload = exynos_drm_unload,
251 .open = exynos_drm_open,
252 .preclose = exynos_drm_preclose,
253 .lastclose = exynos_drm_lastclose,
254 .postclose = exynos_drm_postclose,
255 .get_vblank_counter = drm_vblank_count,
256 .enable_vblank = exynos_drm_crtc_enable_vblank,
257 .disable_vblank = exynos_drm_crtc_disable_vblank,
258 .gem_init_object = exynos_drm_gem_init_object,
259 .gem_free_object = exynos_drm_gem_free_object,
260 .gem_vm_ops = &exynos_drm_gem_vm_ops,
261 .dumb_create = exynos_drm_gem_dumb_create,
262 .dumb_map_offset = exynos_drm_gem_dumb_map_offset,
263 .dumb_destroy = exynos_drm_gem_dumb_destroy,
264 .prime_handle_to_fd = drm_gem_prime_handle_to_fd,
265 .prime_fd_to_handle = drm_gem_prime_fd_to_handle,
266 .gem_prime_export = exynos_dmabuf_prime_export,
267 .gem_prime_import = exynos_dmabuf_prime_import,
268 .ioctls = exynos_ioctls,
269 .fops = &exynos_drm_driver_fops,
270 .name = DRIVER_NAME,
271 .desc = DRIVER_DESC,
272 .date = DRIVER_DATE,
273 .major = DRIVER_MAJOR,
274 .minor = DRIVER_MINOR,
275};
276
277static int exynos_drm_platform_probe(struct platform_device *pdev)
278{
279 DRM_DEBUG_DRIVER("%s\n", __FILE__);
280
281 exynos_drm_driver.num_ioctls = DRM_ARRAY_SIZE(exynos_ioctls);
282
283 return drm_platform_init(&exynos_drm_driver, pdev);
284}
285
286static int exynos_drm_platform_remove(struct platform_device *pdev)
287{
288 DRM_DEBUG_DRIVER("%s\n", __FILE__);
289
290 drm_platform_exit(&exynos_drm_driver, pdev);
291
292 return 0;
293}
294
295static struct platform_driver exynos_drm_platform_driver = {
296 .probe = exynos_drm_platform_probe,
297 .remove = __devexit_p(exynos_drm_platform_remove),
298 .driver = {
299 .owner = THIS_MODULE,
300 .name = "exynos-drm",
301 },
302};
303
304static int __init exynos_drm_init(void)
305{
306 int ret;
307
308 DRM_DEBUG_DRIVER("%s\n", __FILE__);
309
310#ifdef CONFIG_DRM_EXYNOS_FIMD
311 ret = platform_driver_register(&fimd_driver);
312 if (ret < 0)
313 goto out_fimd;
314#endif
315
316#ifdef CONFIG_DRM_EXYNOS_HDMI
317 ret = platform_driver_register(&hdmi_driver);
318 if (ret < 0)
319 goto out_hdmi;
320 ret = platform_driver_register(&mixer_driver);
321 if (ret < 0)
322 goto out_mixer;
323 ret = platform_driver_register(&exynos_drm_common_hdmi_driver);
324 if (ret < 0)
325 goto out_common_hdmi;
326#endif
327
328#ifdef CONFIG_DRM_EXYNOS_VIDI
329 ret = platform_driver_register(&vidi_driver);
330 if (ret < 0)
331 goto out_vidi;
332#endif
333
334#ifdef CONFIG_DRM_EXYNOS_G2D
335 ret = platform_driver_register(&g2d_driver);
336 if (ret < 0)
337 goto out_g2d;
338#endif
339
340 ret = platform_driver_register(&exynos_drm_platform_driver);
341 if (ret < 0)
342 goto out;
343
344 return 0;
345
346out:
347#ifdef CONFIG_DRM_EXYNOS_G2D
348 platform_driver_unregister(&g2d_driver);
349out_g2d:
350#endif
351
352#ifdef CONFIG_DRM_EXYNOS_VIDI
353out_vidi:
354 platform_driver_unregister(&vidi_driver);
355#endif
356
357#ifdef CONFIG_DRM_EXYNOS_HDMI
358 platform_driver_unregister(&exynos_drm_common_hdmi_driver);
359out_common_hdmi:
360 platform_driver_unregister(&mixer_driver);
361out_mixer:
362 platform_driver_unregister(&hdmi_driver);
363out_hdmi:
364#endif
365
366#ifdef CONFIG_DRM_EXYNOS_FIMD
367 platform_driver_unregister(&fimd_driver);
368out_fimd:
369#endif
370 return ret;
371}
372
373static void __exit exynos_drm_exit(void)
374{
375 DRM_DEBUG_DRIVER("%s\n", __FILE__);
376
377 platform_driver_unregister(&exynos_drm_platform_driver);
378
379#ifdef CONFIG_DRM_EXYNOS_G2D
380 platform_driver_unregister(&g2d_driver);
381#endif
382
383#ifdef CONFIG_DRM_EXYNOS_HDMI
384 platform_driver_unregister(&exynos_drm_common_hdmi_driver);
385 platform_driver_unregister(&mixer_driver);
386 platform_driver_unregister(&hdmi_driver);
387#endif
388
389#ifdef CONFIG_DRM_EXYNOS_VIDI
390 platform_driver_unregister(&vidi_driver);
391#endif
392
393#ifdef CONFIG_DRM_EXYNOS_FIMD
394 platform_driver_unregister(&fimd_driver);
395#endif
396}
397
398module_init(exynos_drm_init);
399module_exit(exynos_drm_exit);
400
401MODULE_AUTHOR("Inki Dae <inki.dae@samsung.com>");
402MODULE_AUTHOR("Joonyoung Shim <jy0922.shim@samsung.com>");
403MODULE_AUTHOR("Seung-Woo Kim <sw0312.kim@samsung.com>");
404MODULE_DESCRIPTION("Samsung SoC DRM Driver");
405MODULE_LICENSE("GPL");