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drm/exynos: remove wait queue for pending page flip
[deliverable/linux.git] / drivers / gpu / drm / exynos / exynos_drm_drv.c
CommitLineData
1c248b7d
ID		 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 *
d81aecb5
ID		 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.
1c248b7d
ID		 12 */
13
af65c804 14#include <linux/pm_runtime.h>
760285e7 15#include <drm/drmP.h>
a379df19
GP		 16#include <drm/drm_atomic.h>
17#include <drm/drm_atomic_helper.h>
760285e7 18#include <drm/drm_crtc_helper.h>
1c248b7d 19
f37cd5e8 20#include <linux/component.h>
96f54215 21
1c248b7d
ID		 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"
864ee9e6 29#include "exynos_drm_plane.h"
b73d1230 30#include "exynos_drm_vidi.h"
d7f1642c 31#include "exynos_drm_g2d.h"
cb471f14 32#include "exynos_drm_ipp.h"
0519f9a1 33#include "exynos_drm_iommu.h"
1c248b7d 34
0edf9936 35#define DRIVER_NAME "exynos"
1c248b7d
ID		 36#define DRIVER_DESC "Samsung SoC DRM"
37#define DRIVER_DATE "20110530"
38#define DRIVER_MAJOR 1
39#define DRIVER_MINOR 0
40
a379df19
GP		 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
c4533665
GP		 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
a379df19
GP		 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;
c4533665
GP		 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;
a379df19
GP		 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
c4533665
GP		 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
a379df19
GP		 108 drm_atomic_helper_commit_planes(dev, state);
109
c4533665 110 exynos_atomic_wait_for_commit(state);
a379df19
GP		 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
1c248b7d
ID		 133static int exynos_drm_load(struct drm_device *dev, unsigned long flags)
134{
135 struct exynos_drm_private *private;
6cf27275
GP		 136 struct drm_encoder *encoder;
137 unsigned int clone_mask;
138 int cnt, ret;
1c248b7d 139
1c248b7d 140 private = kzalloc(sizeof(struct exynos_drm_private), GFP_KERNEL);
38bb5253 141 if (!private)
1c248b7d 142 return -ENOMEM;
1c248b7d 143
a379df19
GP		 144 init_waitqueue_head(&private->wait);
145 spin_lock_init(&private->lock);
146
af65c804 147 dev_set_drvdata(dev->dev, dev);
1c248b7d
ID		 148 dev->dev_private = (void *)private;
149
0519f9a1
ID		 150 /*
151 * create mapping to manage iommu table and set a pointer to iommu
152 * mapping structure to iommu_mapping of private data.
153 * also this iommu_mapping can be used to check if iommu is supported
154 * or not.
155 */
156 ret = drm_create_iommu_mapping(dev);
157 if (ret < 0) {
158 DRM_ERROR("failed to create iommu mapping.\n");
d2ba65f6 159 goto err_free_private;
0519f9a1
ID		 160 }
161
1c248b7d
ID		 162 drm_mode_config_init(dev);
163
164 exynos_drm_mode_config_init(dev);
165
d081f566 166 /* setup possible_clones. */
6cf27275
GP		 167 cnt = 0;
168 clone_mask = 0;
169 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head)
170 clone_mask |= (1 << (cnt++));
171
172 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head)
173 encoder->possible_clones = clone_mask;
d081f566 174
a9a346d6
DV		 175 platform_set_drvdata(dev->platformdev, dev);
176
f37cd5e8
ID		 177 /* Try to bind all sub drivers. */
178 ret = component_bind_all(dev->dev, dev);
179 if (ret)
c52142e6
AH		 180 goto err_mode_config_cleanup;
181
182 ret = drm_vblank_init(dev, dev->mode_config.num_crtc);
183 if (ret)
184 goto err_unbind_all;
f37cd5e8 185
d1afe7d4 186 /* Probe non kms sub drivers and virtual display driver. */
f37cd5e8
ID		 187 ret = exynos_drm_device_subdrv_probe(dev);
188 if (ret)
c52142e6 189 goto err_cleanup_vblank;
f37cd5e8 190
4ea9526b
GP		 191 drm_mode_config_reset(dev);
192
4a3ffedd
JS		 193 /*
194 * enable drm irq mode.
195 * - with irq_enabled = true, we can use the vblank feature.
196 *
197 * P.S. note that we wouldn't use drm irq handler but
198 * just specific driver own one instead because
199 * drm framework supports only one irq handler.
200 */
201 dev->irq_enabled = true;
202
203 /*
204 * with vblank_disable_allowed = true, vblank interrupt will be disabled
205 * by drm timer once a current process gives up ownership of
206 * vblank event.(after drm_vblank_put function is called)
207 */
208 dev->vblank_disable_allowed = true;
209
3cb6830a
AH		 210 /* init kms poll for handling hpd */
211 drm_kms_helper_poll_init(dev);
212
213 /* force connectors detection */
214 drm_helper_hpd_irq_event(dev);
215
1c248b7d
ID		 216 return 0;
217
f37cd5e8 218err_cleanup_vblank:
1c248b7d 219 drm_vblank_cleanup(dev);
c52142e6
AH		 220err_unbind_all:
221 component_unbind_all(dev->dev, dev);
080be03d
SP		 222err_mode_config_cleanup:
223 drm_mode_config_cleanup(dev);
0519f9a1 224 drm_release_iommu_mapping(dev);
d2ba65f6 225err_free_private:
1c248b7d
ID		 226 kfree(private);
227
228 return ret;
229}
230
231static int exynos_drm_unload(struct drm_device *dev)
232{
f37cd5e8
ID		 233 exynos_drm_device_subdrv_remove(dev);
234
1c248b7d 235 exynos_drm_fbdev_fini(dev);
7db3eba6 236 drm_kms_helper_poll_fini(dev);
0519f9a1 237
9f3dd7db 238 drm_vblank_cleanup(dev);
c52142e6 239 component_unbind_all(dev->dev, dev);
9f3dd7db 240 drm_mode_config_cleanup(dev);
0519f9a1 241 drm_release_iommu_mapping(dev);
1c248b7d 242
9f3dd7db 243 kfree(dev->dev_private);
1c248b7d
ID		 244 dev->dev_private = NULL;
245
246 return 0;
247}
248
a379df19
GP		 249static int commit_is_pending(struct exynos_drm_private *priv, u32 crtcs)
250{
251 bool pending;
252
253 spin_lock(&priv->lock);
254 pending = priv->pending & crtcs;
255 spin_unlock(&priv->lock);
256
257 return pending;
258}
259
260int exynos_atomic_commit(struct drm_device *dev, struct drm_atomic_state *state,
261 bool async)
262{
263 struct exynos_drm_private *priv = dev->dev_private;
264 struct exynos_atomic_commit *commit;
265 int i, ret;
266
267 commit = kzalloc(sizeof(*commit), GFP_KERNEL);
268 if (!commit)
269 return -ENOMEM;
270
271 ret = drm_atomic_helper_prepare_planes(dev, state);
272 if (ret) {
273 kfree(commit);
274 return ret;
275 }
276
277 /* This is the point of no return */
278
279 INIT_WORK(&commit->work, exynos_drm_atomic_work);
280 commit->dev = dev;
281 commit->state = state;
282
283 /* Wait until all affected CRTCs have completed previous commits and
284 * mark them as pending.
285 */
286 for (i = 0; i < dev->mode_config.num_crtc; ++i) {
287 if (state->crtcs[i])
288 commit->crtcs |= 1 << drm_crtc_index(state->crtcs[i]);
289 }
290
291 wait_event(priv->wait, !commit_is_pending(priv, commit->crtcs));
292
293 spin_lock(&priv->lock);
294 priv->pending |= commit->crtcs;
295 spin_unlock(&priv->lock);
296
297 drm_atomic_helper_swap_state(dev, state);
298
299 if (async)
300 schedule_work(&commit->work);
301 else
302 exynos_atomic_commit_complete(commit);
303
304 return 0;
305}
306
af65c804
SP		 307static int exynos_drm_suspend(struct drm_device *dev, pm_message_t state)
308{
309 struct drm_connector *connector;
310
311 drm_modeset_lock_all(dev);
312 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
313 int old_dpms = connector->dpms;
314
315 if (connector->funcs->dpms)
316 connector->funcs->dpms(connector, DRM_MODE_DPMS_OFF);
317
318 /* Set the old mode back to the connector for resume */
319 connector->dpms = old_dpms;
320 }
321 drm_modeset_unlock_all(dev);
322
323 return 0;
324}
325
326static int exynos_drm_resume(struct drm_device *dev)
327{
328 struct drm_connector *connector;
329
330 drm_modeset_lock_all(dev);
331 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
74cfe07a
AH		 332 if (connector->funcs->dpms) {
333 int dpms = connector->dpms;
334
335 connector->dpms = DRM_MODE_DPMS_OFF;
336 connector->funcs->dpms(connector, dpms);
337 }
af65c804 338 }
a16f223e 339 drm_modeset_unlock_all(dev);
af65c804 340
af65c804
SP		 341 return 0;
342}
343
9084f7b8
JS		 344static int exynos_drm_open(struct drm_device *dev, struct drm_file *file)
345{
d7f1642c 346 struct drm_exynos_file_private *file_priv;
ba3706c0 347 int ret;
d7f1642c 348
d7f1642c
JS		 349 file_priv = kzalloc(sizeof(*file_priv), GFP_KERNEL);
350 if (!file_priv)
351 return -ENOMEM;
352
d7f1642c 353 file->driver_priv = file_priv;
b2df26c1 354
ba3706c0 355 ret = exynos_drm_subdrv_open(dev, file);
6ca605f7 356 if (ret)
307ceaff 357 goto err_file_priv_free;
ba3706c0 358
6ca605f7 359 return ret;
307ceaff 360
307ceaff 361err_file_priv_free:
6ca605f7
SK		 362 kfree(file_priv);
363 file->driver_priv = NULL;
ba3706c0 364 return ret;
9084f7b8
JS		 365}
366
ccf4d883 367static void exynos_drm_preclose(struct drm_device *dev,
6f811502 368 struct drm_file *file)
0cbc330e
ID		 369{
370 exynos_drm_subdrv_close(dev, file);
371}
372
373static void exynos_drm_postclose(struct drm_device *dev, struct drm_file *file)
ccf4d883 374{
0cbc330e 375 struct drm_pending_event *e, *et;
3ab09435
JS		 376 unsigned long flags;
377
0cbc330e
ID		 378 if (!file->driver_priv)
379 return;
380
3ab09435 381 spin_lock_irqsave(&dev->event_lock, flags);
0cbc330e
ID		 382 /* Release all events handled by page flip handler but not freed. */
383 list_for_each_entry_safe(e, et, &file->event_list, link) {
384 list_del(&e->link);
385 e->destroy(e);
386 }
387 spin_unlock_irqrestore(&dev->event_lock, flags);
ccf4d883 388
53ef299f
ID		 389 kfree(file->driver_priv);
390 file->driver_priv = NULL;
391}
392
1c248b7d
ID		 393static void exynos_drm_lastclose(struct drm_device *dev)
394{
1c248b7d
ID		 395 exynos_drm_fbdev_restore_mode(dev);
396}
397
78b68556 398static const struct vm_operations_struct exynos_drm_gem_vm_ops = {
1c248b7d
ID		 399 .fault = exynos_drm_gem_fault,
400 .open = drm_gem_vm_open,
401 .close = drm_gem_vm_close,
402};
403
baa70943 404static const struct drm_ioctl_desc exynos_ioctls[] = {
1c248b7d
ID		 405 DRM_IOCTL_DEF_DRV(EXYNOS_GEM_CREATE, exynos_drm_gem_create_ioctl,
406 DRM_UNLOCKED | DRM_AUTH),
40cd7e0c
ID		 407 DRM_IOCTL_DEF_DRV(EXYNOS_GEM_GET,
408 exynos_drm_gem_get_ioctl, DRM_UNLOCKED),
b73d1230
ID		 409 DRM_IOCTL_DEF_DRV(EXYNOS_VIDI_CONNECTION,
410 vidi_connection_ioctl, DRM_UNLOCKED | DRM_AUTH),
d7f1642c
JS		 411 DRM_IOCTL_DEF_DRV(EXYNOS_G2D_GET_VER,
412 exynos_g2d_get_ver_ioctl, DRM_UNLOCKED | DRM_AUTH),
413 DRM_IOCTL_DEF_DRV(EXYNOS_G2D_SET_CMDLIST,
414 exynos_g2d_set_cmdlist_ioctl, DRM_UNLOCKED | DRM_AUTH),
415 DRM_IOCTL_DEF_DRV(EXYNOS_G2D_EXEC,
416 exynos_g2d_exec_ioctl, DRM_UNLOCKED | DRM_AUTH),
cb471f14
EK		 417 DRM_IOCTL_DEF_DRV(EXYNOS_IPP_GET_PROPERTY,
418 exynos_drm_ipp_get_property, DRM_UNLOCKED | DRM_AUTH),
419 DRM_IOCTL_DEF_DRV(EXYNOS_IPP_SET_PROPERTY,
420 exynos_drm_ipp_set_property, DRM_UNLOCKED | DRM_AUTH),
421 DRM_IOCTL_DEF_DRV(EXYNOS_IPP_QUEUE_BUF,
422 exynos_drm_ipp_queue_buf, DRM_UNLOCKED | DRM_AUTH),
423 DRM_IOCTL_DEF_DRV(EXYNOS_IPP_CMD_CTRL,
424 exynos_drm_ipp_cmd_ctrl, DRM_UNLOCKED | DRM_AUTH),
1c248b7d
ID		 425};
426
ac2bdf73
JS		 427static const struct file_operations exynos_drm_driver_fops = {
428 .owner = THIS_MODULE,
429 .open = drm_open,
430 .mmap = exynos_drm_gem_mmap,
431 .poll = drm_poll,
432 .read = drm_read,
433 .unlocked_ioctl = drm_ioctl,
804d74ab
KP		 434#ifdef CONFIG_COMPAT
435 .compat_ioctl = drm_compat_ioctl,
436#endif
ac2bdf73
JS		 437 .release = drm_release,
438};
439
1c248b7d 440static struct drm_driver exynos_drm_driver = {
be9b64a8 441 .driver_features = DRIVER_MODESET | DRIVER_GEM | DRIVER_PRIME,
1c248b7d
ID		 442 .load = exynos_drm_load,
443 .unload = exynos_drm_unload,
af65c804
SP		 444 .suspend = exynos_drm_suspend,
445 .resume = exynos_drm_resume,
9084f7b8 446 .open = exynos_drm_open,
ccf4d883 447 .preclose = exynos_drm_preclose,
1c248b7d 448 .lastclose = exynos_drm_lastclose,
53ef299f 449 .postclose = exynos_drm_postclose,
915b4d11 450 .set_busid = drm_platform_set_busid,
1c248b7d
ID		 451 .get_vblank_counter = drm_vblank_count,
452 .enable_vblank = exynos_drm_crtc_enable_vblank,
453 .disable_vblank = exynos_drm_crtc_disable_vblank,
1c248b7d
ID		 454 .gem_free_object = exynos_drm_gem_free_object,
455 .gem_vm_ops = &exynos_drm_gem_vm_ops,
456 .dumb_create = exynos_drm_gem_dumb_create,
457 .dumb_map_offset = exynos_drm_gem_dumb_map_offset,
43387b37 458 .dumb_destroy = drm_gem_dumb_destroy,
b2df26c1
ID		 459 .prime_handle_to_fd = drm_gem_prime_handle_to_fd,
460 .prime_fd_to_handle = drm_gem_prime_fd_to_handle,
01ed50dd
JS		 461 .gem_prime_export = drm_gem_prime_export,
462 .gem_prime_import = drm_gem_prime_import,
463 .gem_prime_get_sg_table = exynos_drm_gem_prime_get_sg_table,
464 .gem_prime_import_sg_table = exynos_drm_gem_prime_import_sg_table,
465 .gem_prime_vmap = exynos_drm_gem_prime_vmap,
466 .gem_prime_vunmap = exynos_drm_gem_prime_vunmap,
1c248b7d 467 .ioctls = exynos_ioctls,
baa70943 468 .num_ioctls = ARRAY_SIZE(exynos_ioctls),
ac2bdf73 469 .fops = &exynos_drm_driver_fops,
1c248b7d
ID		 470 .name = DRIVER_NAME,
471 .desc = DRIVER_DESC,
472 .date = DRIVER_DATE,
473 .major = DRIVER_MAJOR,
474 .minor = DRIVER_MINOR,
475};
476
af65c804
SP		 477#ifdef CONFIG_PM_SLEEP
478static int exynos_drm_sys_suspend(struct device *dev)
479{
480 struct drm_device *drm_dev = dev_get_drvdata(dev);
481 pm_message_t message;
482
d50a1907 483 if (pm_runtime_suspended(dev) || !drm_dev)
af65c804
SP		 484 return 0;
485
486 message.event = PM_EVENT_SUSPEND;
487 return exynos_drm_suspend(drm_dev, message);
488}
489
490static int exynos_drm_sys_resume(struct device *dev)
491{
492 struct drm_device *drm_dev = dev_get_drvdata(dev);
493
d50a1907 494 if (pm_runtime_suspended(dev) || !drm_dev)
af65c804
SP		 495 return 0;
496
497 return exynos_drm_resume(drm_dev);
498}
499#endif
500
af65c804
SP		 501static const struct dev_pm_ops exynos_drm_pm_ops = {
502 SET_SYSTEM_SLEEP_PM_OPS(exynos_drm_sys_suspend, exynos_drm_sys_resume)
af65c804
SP		 503};
504
86650408
AH		 505/* forward declaration */
506static struct platform_driver exynos_drm_platform_driver;
f37cd5e8 507
86650408
AH		 508/*
509 * Connector drivers should not be placed before associated crtc drivers,
510 * because connector requires pipe number of its crtc during initialization.
511 */
512static struct platform_driver *const exynos_drm_kms_drivers[] = {
86650408
AH		 513#ifdef CONFIG_DRM_EXYNOS_FIMD
514 &fimd_driver,
515#endif
516#ifdef CONFIG_DRM_EXYNOS5433_DECON
517 &exynos5433_decon_driver,
518#endif
519#ifdef CONFIG_DRM_EXYNOS7_DECON
520 &decon_driver,
521#endif
77bbd891
HH		 522#ifdef CONFIG_DRM_EXYNOS_MIC
523 &mic_driver,
524#endif
86650408
AH		 525#ifdef CONFIG_DRM_EXYNOS_DP
526 &dp_driver,
527#endif
528#ifdef CONFIG_DRM_EXYNOS_DSI
529 &dsi_driver,
530#endif
531#ifdef CONFIG_DRM_EXYNOS_HDMI
532 &mixer_driver,
533 &hdmi_driver,
534#endif
735c21c3
JS		 535#ifdef CONFIG_DRM_EXYNOS_VIDI
536 &vidi_driver,
537#endif
86650408 538};
df5225bc 539
86650408 540static struct platform_driver *const exynos_drm_non_kms_drivers[] = {
86650408
AH		 541#ifdef CONFIG_DRM_EXYNOS_G2D
542 &g2d_driver,
543#endif
544#ifdef CONFIG_DRM_EXYNOS_FIMC
545 &fimc_driver,
546#endif
547#ifdef CONFIG_DRM_EXYNOS_ROTATOR
548 &rotator_driver,
549#endif
550#ifdef CONFIG_DRM_EXYNOS_GSC
551 &gsc_driver,
552#endif
553#ifdef CONFIG_DRM_EXYNOS_IPP
554 &ipp_driver,
555#endif
556 &exynos_drm_platform_driver,
557};
f37cd5e8 558
86650408
AH		 559static struct platform_driver *const exynos_drm_drv_with_simple_dev[] = {
560#ifdef CONFIG_DRM_EXYNOS_VIDI
561 &vidi_driver,
562#endif
563#ifdef CONFIG_DRM_EXYNOS_IPP
564 &ipp_driver,
565#endif
566 &exynos_drm_platform_driver,
567};
568#define PDEV_COUNT ARRAY_SIZE(exynos_drm_drv_with_simple_dev)
f37cd5e8 569
53c5558d 570static int compare_dev(struct device *dev, void *data)
f37cd5e8
ID		 571{
572 return dev == (struct device *)data;
573}
574
53c5558d 575static struct component_match *exynos_drm_match_add(struct device *dev)
f37cd5e8 576{
53c5558d 577 struct component_match *match = NULL;
86650408 578 int i;
f37cd5e8 579
86650408
AH		 580 for (i = 0; i < ARRAY_SIZE(exynos_drm_kms_drivers); ++i) {
581 struct device_driver *drv = &exynos_drm_kms_drivers[i]->driver;
582 struct device *p = NULL, *d;
f7c2f36f 583
86650408
AH		 584 while ((d = bus_find_device(&platform_bus_type, p, drv,
585 (void *)platform_bus_type.match))) {
586 put_device(p);
587 component_match_add(dev, &match, compare_dev, d);
588 p = d;
df5225bc 589 }
86650408 590 put_device(p);
f37cd5e8
ID		 591 }
592
86650408 593 return match ?: ERR_PTR(-ENODEV);
f37cd5e8
ID		 594}
595
596static int exynos_drm_bind(struct device *dev)
597{
f37cd5e8
ID		 598 return drm_platform_init(&exynos_drm_driver, to_platform_device(dev));
599}
600
601static void exynos_drm_unbind(struct device *dev)
602{
603 drm_put_dev(dev_get_drvdata(dev));
604}
605
606static const struct component_master_ops exynos_drm_ops = {
f37cd5e8
ID		 607 .bind = exynos_drm_bind,
608 .unbind = exynos_drm_unbind,
1c248b7d
ID		 609};
610
417133e4
AH		 611static int exynos_drm_platform_probe(struct platform_device *pdev)
612{
613 struct component_match *match;
614
615 pdev->dev.coherent_dma_mask = DMA_BIT_MASK(32);
616 exynos_drm_driver.num_ioctls = ARRAY_SIZE(exynos_ioctls);
617
618 match = exynos_drm_match_add(&pdev->dev);
619 if (IS_ERR(match))
620 return PTR_ERR(match);
621
622 return component_master_add_with_match(&pdev->dev, &exynos_drm_ops,
623 match);
624}
625
626static int exynos_drm_platform_remove(struct platform_device *pdev)
627{
628 component_master_del(&pdev->dev, &exynos_drm_ops);
629 return 0;
630}
631
632static struct platform_driver exynos_drm_platform_driver = {
633 .probe = exynos_drm_platform_probe,
634 .remove = exynos_drm_platform_remove,
635 .driver = {
636 .name = "exynos-drm",
637 .pm = &exynos_drm_pm_ops,
638 },
639};
640
417133e4
AH		 641static struct platform_device *exynos_drm_pdevs[PDEV_COUNT];
642
643static void exynos_drm_unregister_devices(void)
72390677 644{
417133e4 645 int i = PDEV_COUNT;
25928a39 646
417133e4
AH		 647 while (--i >= 0) {
648 platform_device_unregister(exynos_drm_pdevs[i]);
649 exynos_drm_pdevs[i] = NULL;
650 }
651}
7eb8f069 652
417133e4
AH		 653static int exynos_drm_register_devices(void)
654{
655 int i;
656
657 for (i = 0; i < PDEV_COUNT; ++i) {
658 struct platform_driver *d = exynos_drm_drv_with_simple_dev[i];
659 struct platform_device *pdev =
660 platform_device_register_simple(d->driver.name, -1,
661 NULL, 0);
662
663 if (!IS_ERR(pdev)) {
664 exynos_drm_pdevs[i] = pdev;
665 continue;
666 }
667 while (--i >= 0) {
668 platform_device_unregister(exynos_drm_pdevs[i]);
669 exynos_drm_pdevs[i] = NULL;
670 }
671
672 return PTR_ERR(pdev);
72390677 673 }
f37cd5e8 674
417133e4 675 return 0;
1c248b7d
ID		 676}
677
417133e4
AH		 678static void exynos_drm_unregister_drivers(struct platform_driver * const *drv,
679 int count)
1c248b7d 680{
417133e4
AH		 681 while (--count >= 0)
682 platform_driver_unregister(drv[count]);
683}
684
685static int exynos_drm_register_drivers(struct platform_driver * const *drv,
686 int count)
687{
688 int i, ret;
689
690 for (i = 0; i < count; ++i) {
691 ret = platform_driver_register(drv[i]);
692 if (!ret)
693 continue;
694
695 while (--i >= 0)
696 platform_driver_unregister(drv[i]);
697
698 return ret;
699 }
700
f37cd5e8
ID		 701 return 0;
702}
703
417133e4
AH		 704static inline int exynos_drm_register_kms_drivers(void)
705{
706 return exynos_drm_register_drivers(exynos_drm_kms_drivers,
707 ARRAY_SIZE(exynos_drm_kms_drivers));
708}
709
710static inline int exynos_drm_register_non_kms_drivers(void)
711{
712 return exynos_drm_register_drivers(exynos_drm_non_kms_drivers,
713 ARRAY_SIZE(exynos_drm_non_kms_drivers));
714}
715
716static inline void exynos_drm_unregister_kms_drivers(void)
717{
718 exynos_drm_unregister_drivers(exynos_drm_kms_drivers,
719 ARRAY_SIZE(exynos_drm_kms_drivers));
720}
721
722static inline void exynos_drm_unregister_non_kms_drivers(void)
723{
724 exynos_drm_unregister_drivers(exynos_drm_non_kms_drivers,
725 ARRAY_SIZE(exynos_drm_non_kms_drivers));
726}
727
f37cd5e8
ID		 728static int exynos_drm_init(void)
729{
e3b9e460 730 int ret;
f37cd5e8 731
417133e4
AH		 732 ret = exynos_drm_register_devices();
733 if (ret)
734 return ret;
820687be 735
417133e4
AH		 736 ret = exynos_drm_register_kms_drivers();
737 if (ret)
738 goto err_unregister_pdevs;
f37cd5e8 739
417133e4 740 ret = exynos_drm_register_non_kms_drivers();
f37cd5e8 741 if (ret)
417133e4 742 goto err_unregister_kms_drivers;
f37cd5e8
ID		 743
744 return 0;
745
820687be 746err_unregister_kms_drivers:
417133e4 747 exynos_drm_unregister_kms_drivers();
820687be 748
417133e4
AH		 749err_unregister_pdevs:
750 exynos_drm_unregister_devices();
f37cd5e8
ID		 751
752 return ret;
753}
754
755static void exynos_drm_exit(void)
756{
417133e4
AH		 757 exynos_drm_unregister_non_kms_drivers();
758 exynos_drm_unregister_kms_drivers();
759 exynos_drm_unregister_devices();
1c248b7d
ID		 760}
761
762module_init(exynos_drm_init);
763module_exit(exynos_drm_exit);
764
765MODULE_AUTHOR("Inki Dae <inki.dae@samsung.com>");
766MODULE_AUTHOR("Joonyoung Shim <jy0922.shim@samsung.com>");
767MODULE_AUTHOR("Seung-Woo Kim <sw0312.kim@samsung.com>");
768MODULE_DESCRIPTION("Samsung SoC DRM Driver");
769MODULE_LICENSE("GPL");
Linux kernel - Deliverables
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