1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3 * vsp1_drv.c -- R-Car VSP1 Driver
4 *
5 * Copyright (C) 2013-2015 Renesas Electronics Corporation
6 *
7 * Contact: Laurent Pinchart (laurent.pinchart@ideasonboard.com)
8 */
9
10 #include <linux/clk.h>
11 #include <linux/delay.h>
12 #include <linux/device.h>
13 #include <linux/interrupt.h>
14 #include <linux/module.h>
15 #include <linux/of.h>
16 #include <linux/of_device.h>
17 #include <linux/platform_device.h>
18 #include <linux/pm_runtime.h>
19 #include <linux/videodev2.h>
20
21 #include <media/rcar-fcp.h>
22 #include <media/v4l2-subdev.h>
23
24 #include "vsp1.h"
25 #include "vsp1_brx.h"
26 #include "vsp1_clu.h"
27 #include "vsp1_dl.h"
28 #include "vsp1_drm.h"
29 #include "vsp1_hgo.h"
30 #include "vsp1_hgt.h"
31 #include "vsp1_hsit.h"
32 #include "vsp1_lif.h"
33 #include "vsp1_lut.h"
34 #include "vsp1_pipe.h"
35 #include "vsp1_rwpf.h"
36 #include "vsp1_sru.h"
37 #include "vsp1_uds.h"
38 #include "vsp1_uif.h"
39 #include "vsp1_video.h"
40
41 /* -----------------------------------------------------------------------------
42 * Interrupt Handling
43 */
44
vsp1_irq_handler(int irq,void * data)45 static irqreturn_t vsp1_irq_handler(int irq, void *data)
46 {
47 u32 mask = VI6_WFP_IRQ_STA_DFE | VI6_WFP_IRQ_STA_FRE;
48 struct vsp1_device *vsp1 = data;
49 irqreturn_t ret = IRQ_NONE;
50 unsigned int i;
51 u32 status;
52
53 for (i = 0; i < vsp1->info->wpf_count; ++i) {
54 struct vsp1_rwpf *wpf = vsp1->wpf[i];
55
56 if (wpf == NULL)
57 continue;
58
59 status = vsp1_read(vsp1, VI6_WPF_IRQ_STA(i));
60 vsp1_write(vsp1, VI6_WPF_IRQ_STA(i), ~status & mask);
61
62 if (status & VI6_WFP_IRQ_STA_DFE) {
63 vsp1_pipeline_frame_end(wpf->entity.pipe);
64 ret = IRQ_HANDLED;
65 }
66 }
67
68 return ret;
69 }
70
71 /* -----------------------------------------------------------------------------
72 * Entities
73 */
74
75 /*
76 * vsp1_create_sink_links - Create links from all sources to the given sink
77 *
78 * This function creates media links from all valid sources to the given sink
79 * pad. Links that would be invalid according to the VSP1 hardware capabilities
80 * are skipped. Those include all links
81 *
82 * - from a UDS to a UDS (UDS entities can't be chained)
83 * - from an entity to itself (no loops are allowed)
84 *
85 * Furthermore, the BRS can't be connected to histogram generators, but no
86 * special check is currently needed as all VSP instances that include a BRS
87 * have no histogram generator.
88 */
vsp1_create_sink_links(struct vsp1_device * vsp1,struct vsp1_entity * sink)89 static int vsp1_create_sink_links(struct vsp1_device *vsp1,
90 struct vsp1_entity *sink)
91 {
92 struct media_entity *entity = &sink->subdev.entity;
93 struct vsp1_entity *source;
94 unsigned int pad;
95 int ret;
96
97 list_for_each_entry(source, &vsp1->entities, list_dev) {
98 u32 flags;
99
100 if (source->type == sink->type)
101 continue;
102
103 if (source->type == VSP1_ENTITY_HGO ||
104 source->type == VSP1_ENTITY_HGT ||
105 source->type == VSP1_ENTITY_LIF ||
106 source->type == VSP1_ENTITY_WPF)
107 continue;
108
109 flags = source->type == VSP1_ENTITY_RPF &&
110 sink->type == VSP1_ENTITY_WPF &&
111 source->index == sink->index
112 ? MEDIA_LNK_FL_ENABLED : 0;
113
114 for (pad = 0; pad < entity->num_pads; ++pad) {
115 if (!(entity->pads[pad].flags & MEDIA_PAD_FL_SINK))
116 continue;
117
118 ret = media_create_pad_link(&source->subdev.entity,
119 source->source_pad,
120 entity, pad, flags);
121 if (ret < 0)
122 return ret;
123
124 if (flags & MEDIA_LNK_FL_ENABLED)
125 source->sink = sink;
126 }
127 }
128
129 return 0;
130 }
131
vsp1_uapi_create_links(struct vsp1_device * vsp1)132 static int vsp1_uapi_create_links(struct vsp1_device *vsp1)
133 {
134 struct vsp1_entity *entity;
135 unsigned int i;
136 int ret;
137
138 list_for_each_entry(entity, &vsp1->entities, list_dev) {
139 if (entity->type == VSP1_ENTITY_LIF ||
140 entity->type == VSP1_ENTITY_RPF)
141 continue;
142
143 ret = vsp1_create_sink_links(vsp1, entity);
144 if (ret < 0)
145 return ret;
146 }
147
148 if (vsp1->hgo) {
149 ret = media_create_pad_link(&vsp1->hgo->histo.entity.subdev.entity,
150 HISTO_PAD_SOURCE,
151 &vsp1->hgo->histo.video.entity, 0,
152 MEDIA_LNK_FL_ENABLED |
153 MEDIA_LNK_FL_IMMUTABLE);
154 if (ret < 0)
155 return ret;
156 }
157
158 if (vsp1->hgt) {
159 ret = media_create_pad_link(&vsp1->hgt->histo.entity.subdev.entity,
160 HISTO_PAD_SOURCE,
161 &vsp1->hgt->histo.video.entity, 0,
162 MEDIA_LNK_FL_ENABLED |
163 MEDIA_LNK_FL_IMMUTABLE);
164 if (ret < 0)
165 return ret;
166 }
167
168 for (i = 0; i < vsp1->info->lif_count; ++i) {
169 if (!vsp1->lif[i])
170 continue;
171
172 ret = media_create_pad_link(&vsp1->wpf[i]->entity.subdev.entity,
173 RWPF_PAD_SOURCE,
174 &vsp1->lif[i]->entity.subdev.entity,
175 LIF_PAD_SINK, 0);
176 if (ret < 0)
177 return ret;
178 }
179
180 for (i = 0; i < vsp1->info->rpf_count; ++i) {
181 struct vsp1_rwpf *rpf = vsp1->rpf[i];
182
183 ret = media_create_pad_link(&rpf->video->video.entity, 0,
184 &rpf->entity.subdev.entity,
185 RWPF_PAD_SINK,
186 MEDIA_LNK_FL_ENABLED |
187 MEDIA_LNK_FL_IMMUTABLE);
188 if (ret < 0)
189 return ret;
190 }
191
192 for (i = 0; i < vsp1->info->wpf_count; ++i) {
193 /*
194 * Connect the video device to the WPF. All connections are
195 * immutable.
196 */
197 struct vsp1_rwpf *wpf = vsp1->wpf[i];
198
199 ret = media_create_pad_link(&wpf->entity.subdev.entity,
200 RWPF_PAD_SOURCE,
201 &wpf->video->video.entity, 0,
202 MEDIA_LNK_FL_IMMUTABLE |
203 MEDIA_LNK_FL_ENABLED);
204 if (ret < 0)
205 return ret;
206 }
207
208 return 0;
209 }
210
vsp1_destroy_entities(struct vsp1_device * vsp1)211 static void vsp1_destroy_entities(struct vsp1_device *vsp1)
212 {
213 struct vsp1_entity *entity, *_entity;
214 struct vsp1_video *video, *_video;
215
216 list_for_each_entry_safe(entity, _entity, &vsp1->entities, list_dev) {
217 list_del(&entity->list_dev);
218 vsp1_entity_destroy(entity);
219 }
220
221 list_for_each_entry_safe(video, _video, &vsp1->videos, list) {
222 list_del(&video->list);
223 vsp1_video_cleanup(video);
224 }
225
226 v4l2_device_unregister(&vsp1->v4l2_dev);
227 if (vsp1->info->uapi)
228 media_device_unregister(&vsp1->media_dev);
229 media_device_cleanup(&vsp1->media_dev);
230
231 if (!vsp1->info->uapi)
232 vsp1_drm_cleanup(vsp1);
233 }
234
vsp1_create_entities(struct vsp1_device * vsp1)235 static int vsp1_create_entities(struct vsp1_device *vsp1)
236 {
237 struct media_device *mdev = &vsp1->media_dev;
238 struct v4l2_device *vdev = &vsp1->v4l2_dev;
239 struct vsp1_entity *entity;
240 unsigned int i;
241 int ret;
242
243 mdev->dev = vsp1->dev;
244 mdev->hw_revision = vsp1->version;
245 strlcpy(mdev->model, vsp1->info->model, sizeof(mdev->model));
246 snprintf(mdev->bus_info, sizeof(mdev->bus_info), "platform:%s",
247 dev_name(mdev->dev));
248 media_device_init(mdev);
249
250 vsp1->media_ops.link_setup = vsp1_entity_link_setup;
251 /*
252 * Don't perform link validation when the userspace API is disabled as
253 * the pipeline is configured internally by the driver in that case, and
254 * its configuration can thus be trusted.
255 */
256 if (vsp1->info->uapi)
257 vsp1->media_ops.link_validate = v4l2_subdev_link_validate;
258
259 vdev->mdev = mdev;
260 ret = v4l2_device_register(vsp1->dev, vdev);
261 if (ret < 0) {
262 dev_err(vsp1->dev, "V4L2 device registration failed (%d)\n",
263 ret);
264 goto done;
265 }
266
267 /* Instantiate all the entities. */
268 if (vsp1_feature(vsp1, VSP1_HAS_BRS)) {
269 vsp1->brs = vsp1_brx_create(vsp1, VSP1_ENTITY_BRS);
270 if (IS_ERR(vsp1->brs)) {
271 ret = PTR_ERR(vsp1->brs);
272 goto done;
273 }
274
275 list_add_tail(&vsp1->brs->entity.list_dev, &vsp1->entities);
276 }
277
278 if (vsp1_feature(vsp1, VSP1_HAS_BRU)) {
279 vsp1->bru = vsp1_brx_create(vsp1, VSP1_ENTITY_BRU);
280 if (IS_ERR(vsp1->bru)) {
281 ret = PTR_ERR(vsp1->bru);
282 goto done;
283 }
284
285 list_add_tail(&vsp1->bru->entity.list_dev, &vsp1->entities);
286 }
287
288 if (vsp1_feature(vsp1, VSP1_HAS_CLU)) {
289 vsp1->clu = vsp1_clu_create(vsp1);
290 if (IS_ERR(vsp1->clu)) {
291 ret = PTR_ERR(vsp1->clu);
292 goto done;
293 }
294
295 list_add_tail(&vsp1->clu->entity.list_dev, &vsp1->entities);
296 }
297
298 vsp1->hsi = vsp1_hsit_create(vsp1, true);
299 if (IS_ERR(vsp1->hsi)) {
300 ret = PTR_ERR(vsp1->hsi);
301 goto done;
302 }
303
304 list_add_tail(&vsp1->hsi->entity.list_dev, &vsp1->entities);
305
306 vsp1->hst = vsp1_hsit_create(vsp1, false);
307 if (IS_ERR(vsp1->hst)) {
308 ret = PTR_ERR(vsp1->hst);
309 goto done;
310 }
311
312 list_add_tail(&vsp1->hst->entity.list_dev, &vsp1->entities);
313
314 if (vsp1_feature(vsp1, VSP1_HAS_HGO) && vsp1->info->uapi) {
315 vsp1->hgo = vsp1_hgo_create(vsp1);
316 if (IS_ERR(vsp1->hgo)) {
317 ret = PTR_ERR(vsp1->hgo);
318 goto done;
319 }
320
321 list_add_tail(&vsp1->hgo->histo.entity.list_dev,
322 &vsp1->entities);
323 }
324
325 if (vsp1_feature(vsp1, VSP1_HAS_HGT) && vsp1->info->uapi) {
326 vsp1->hgt = vsp1_hgt_create(vsp1);
327 if (IS_ERR(vsp1->hgt)) {
328 ret = PTR_ERR(vsp1->hgt);
329 goto done;
330 }
331
332 list_add_tail(&vsp1->hgt->histo.entity.list_dev,
333 &vsp1->entities);
334 }
335
336 /*
337 * The LIFs are only supported when used in conjunction with the DU, in
338 * which case the userspace API is disabled. If the userspace API is
339 * enabled skip the LIFs, even when present.
340 */
341 if (!vsp1->info->uapi) {
342 for (i = 0; i < vsp1->info->lif_count; ++i) {
343 struct vsp1_lif *lif;
344
345 lif = vsp1_lif_create(vsp1, i);
346 if (IS_ERR(lif)) {
347 ret = PTR_ERR(lif);
348 goto done;
349 }
350
351 vsp1->lif[i] = lif;
352 list_add_tail(&lif->entity.list_dev, &vsp1->entities);
353 }
354 }
355
356 if (vsp1_feature(vsp1, VSP1_HAS_LUT)) {
357 vsp1->lut = vsp1_lut_create(vsp1);
358 if (IS_ERR(vsp1->lut)) {
359 ret = PTR_ERR(vsp1->lut);
360 goto done;
361 }
362
363 list_add_tail(&vsp1->lut->entity.list_dev, &vsp1->entities);
364 }
365
366 for (i = 0; i < vsp1->info->rpf_count; ++i) {
367 struct vsp1_rwpf *rpf;
368
369 rpf = vsp1_rpf_create(vsp1, i);
370 if (IS_ERR(rpf)) {
371 ret = PTR_ERR(rpf);
372 goto done;
373 }
374
375 vsp1->rpf[i] = rpf;
376 list_add_tail(&rpf->entity.list_dev, &vsp1->entities);
377
378 if (vsp1->info->uapi) {
379 struct vsp1_video *video = vsp1_video_create(vsp1, rpf);
380
381 if (IS_ERR(video)) {
382 ret = PTR_ERR(video);
383 goto done;
384 }
385
386 list_add_tail(&video->list, &vsp1->videos);
387 }
388 }
389
390 if (vsp1_feature(vsp1, VSP1_HAS_SRU)) {
391 vsp1->sru = vsp1_sru_create(vsp1);
392 if (IS_ERR(vsp1->sru)) {
393 ret = PTR_ERR(vsp1->sru);
394 goto done;
395 }
396
397 list_add_tail(&vsp1->sru->entity.list_dev, &vsp1->entities);
398 }
399
400 for (i = 0; i < vsp1->info->uds_count; ++i) {
401 struct vsp1_uds *uds;
402
403 uds = vsp1_uds_create(vsp1, i);
404 if (IS_ERR(uds)) {
405 ret = PTR_ERR(uds);
406 goto done;
407 }
408
409 vsp1->uds[i] = uds;
410 list_add_tail(&uds->entity.list_dev, &vsp1->entities);
411 }
412
413 for (i = 0; i < vsp1->info->uif_count; ++i) {
414 struct vsp1_uif *uif;
415
416 uif = vsp1_uif_create(vsp1, i);
417 if (IS_ERR(uif)) {
418 ret = PTR_ERR(uif);
419 goto done;
420 }
421
422 vsp1->uif[i] = uif;
423 list_add_tail(&uif->entity.list_dev, &vsp1->entities);
424 }
425
426 for (i = 0; i < vsp1->info->wpf_count; ++i) {
427 struct vsp1_rwpf *wpf;
428
429 wpf = vsp1_wpf_create(vsp1, i);
430 if (IS_ERR(wpf)) {
431 ret = PTR_ERR(wpf);
432 goto done;
433 }
434
435 vsp1->wpf[i] = wpf;
436 list_add_tail(&wpf->entity.list_dev, &vsp1->entities);
437
438 if (vsp1->info->uapi) {
439 struct vsp1_video *video = vsp1_video_create(vsp1, wpf);
440
441 if (IS_ERR(video)) {
442 ret = PTR_ERR(video);
443 goto done;
444 }
445
446 list_add_tail(&video->list, &vsp1->videos);
447 }
448 }
449
450 /* Register all subdevs. */
451 list_for_each_entry(entity, &vsp1->entities, list_dev) {
452 ret = v4l2_device_register_subdev(&vsp1->v4l2_dev,
453 &entity->subdev);
454 if (ret < 0)
455 goto done;
456 }
457
458 /*
459 * Create links and register subdev nodes if the userspace API is
460 * enabled or initialize the DRM pipeline otherwise.
461 */
462 if (vsp1->info->uapi) {
463 ret = vsp1_uapi_create_links(vsp1);
464 if (ret < 0)
465 goto done;
466
467 ret = v4l2_device_register_subdev_nodes(&vsp1->v4l2_dev);
468 if (ret < 0)
469 goto done;
470
471 ret = media_device_register(mdev);
472 } else {
473 ret = vsp1_drm_init(vsp1);
474 }
475
476 done:
477 if (ret < 0)
478 vsp1_destroy_entities(vsp1);
479
480 return ret;
481 }
482
vsp1_reset_wpf(struct vsp1_device * vsp1,unsigned int index)483 int vsp1_reset_wpf(struct vsp1_device *vsp1, unsigned int index)
484 {
485 unsigned int timeout;
486 u32 status;
487
488 status = vsp1_read(vsp1, VI6_STATUS);
489 if (!(status & VI6_STATUS_SYS_ACT(index)))
490 return 0;
491
492 vsp1_write(vsp1, VI6_SRESET, VI6_SRESET_SRTS(index));
493 for (timeout = 10; timeout > 0; --timeout) {
494 status = vsp1_read(vsp1, VI6_STATUS);
495 if (!(status & VI6_STATUS_SYS_ACT(index)))
496 break;
497
498 usleep_range(1000, 2000);
499 }
500
501 if (!timeout) {
502 dev_err(vsp1->dev, "failed to reset wpf.%u\n", index);
503 return -ETIMEDOUT;
504 }
505
506 return 0;
507 }
508
vsp1_device_init(struct vsp1_device * vsp1)509 static int vsp1_device_init(struct vsp1_device *vsp1)
510 {
511 unsigned int i;
512 int ret;
513
514 /* Reset any channel that might be running. */
515 for (i = 0; i < vsp1->info->wpf_count; ++i) {
516 ret = vsp1_reset_wpf(vsp1, i);
517 if (ret < 0)
518 return ret;
519 }
520
521 vsp1_write(vsp1, VI6_CLK_DCSWT, (8 << VI6_CLK_DCSWT_CSTPW_SHIFT) |
522 (8 << VI6_CLK_DCSWT_CSTRW_SHIFT));
523
524 for (i = 0; i < vsp1->info->rpf_count; ++i)
525 vsp1_write(vsp1, VI6_DPR_RPF_ROUTE(i), VI6_DPR_NODE_UNUSED);
526
527 for (i = 0; i < vsp1->info->uds_count; ++i)
528 vsp1_write(vsp1, VI6_DPR_UDS_ROUTE(i), VI6_DPR_NODE_UNUSED);
529
530 for (i = 0; i < vsp1->info->uif_count; ++i)
531 vsp1_write(vsp1, VI6_DPR_UIF_ROUTE(i), VI6_DPR_NODE_UNUSED);
532
533 vsp1_write(vsp1, VI6_DPR_SRU_ROUTE, VI6_DPR_NODE_UNUSED);
534 vsp1_write(vsp1, VI6_DPR_LUT_ROUTE, VI6_DPR_NODE_UNUSED);
535 vsp1_write(vsp1, VI6_DPR_CLU_ROUTE, VI6_DPR_NODE_UNUSED);
536 vsp1_write(vsp1, VI6_DPR_HST_ROUTE, VI6_DPR_NODE_UNUSED);
537 vsp1_write(vsp1, VI6_DPR_HSI_ROUTE, VI6_DPR_NODE_UNUSED);
538 vsp1_write(vsp1, VI6_DPR_BRU_ROUTE, VI6_DPR_NODE_UNUSED);
539
540 if (vsp1_feature(vsp1, VSP1_HAS_BRS))
541 vsp1_write(vsp1, VI6_DPR_ILV_BRS_ROUTE, VI6_DPR_NODE_UNUSED);
542
543 vsp1_write(vsp1, VI6_DPR_HGO_SMPPT, (7 << VI6_DPR_SMPPT_TGW_SHIFT) |
544 (VI6_DPR_NODE_UNUSED << VI6_DPR_SMPPT_PT_SHIFT));
545 vsp1_write(vsp1, VI6_DPR_HGT_SMPPT, (7 << VI6_DPR_SMPPT_TGW_SHIFT) |
546 (VI6_DPR_NODE_UNUSED << VI6_DPR_SMPPT_PT_SHIFT));
547
548 vsp1_dlm_setup(vsp1);
549
550 return 0;
551 }
552
553 /*
554 * vsp1_device_get - Acquire the VSP1 device
555 *
556 * Make sure the device is not suspended and initialize it if needed.
557 *
558 * Return 0 on success or a negative error code otherwise.
559 */
vsp1_device_get(struct vsp1_device * vsp1)560 int vsp1_device_get(struct vsp1_device *vsp1)
561 {
562 int ret;
563
564 ret = pm_runtime_get_sync(vsp1->dev);
565 return ret < 0 ? ret : 0;
566 }
567
568 /*
569 * vsp1_device_put - Release the VSP1 device
570 *
571 * Decrement the VSP1 reference count and cleanup the device if the last
572 * reference is released.
573 */
vsp1_device_put(struct vsp1_device * vsp1)574 void vsp1_device_put(struct vsp1_device *vsp1)
575 {
576 pm_runtime_put_sync(vsp1->dev);
577 }
578
579 /* -----------------------------------------------------------------------------
580 * Power Management
581 */
582
vsp1_pm_suspend(struct device * dev)583 static int __maybe_unused vsp1_pm_suspend(struct device *dev)
584 {
585 struct vsp1_device *vsp1 = dev_get_drvdata(dev);
586
587 /*
588 * When used as part of a display pipeline, the VSP is stopped and
589 * restarted explicitly by the DU.
590 */
591 if (!vsp1->drm)
592 vsp1_video_suspend(vsp1);
593
594 pm_runtime_force_suspend(vsp1->dev);
595
596 return 0;
597 }
598
vsp1_pm_resume(struct device * dev)599 static int __maybe_unused vsp1_pm_resume(struct device *dev)
600 {
601 struct vsp1_device *vsp1 = dev_get_drvdata(dev);
602
603 pm_runtime_force_resume(vsp1->dev);
604
605 /*
606 * When used as part of a display pipeline, the VSP is stopped and
607 * restarted explicitly by the DU.
608 */
609 if (!vsp1->drm)
610 vsp1_video_resume(vsp1);
611
612 return 0;
613 }
614
vsp1_pm_runtime_suspend(struct device * dev)615 static int __maybe_unused vsp1_pm_runtime_suspend(struct device *dev)
616 {
617 struct vsp1_device *vsp1 = dev_get_drvdata(dev);
618
619 rcar_fcp_disable(vsp1->fcp);
620
621 return 0;
622 }
623
vsp1_pm_runtime_resume(struct device * dev)624 static int __maybe_unused vsp1_pm_runtime_resume(struct device *dev)
625 {
626 struct vsp1_device *vsp1 = dev_get_drvdata(dev);
627 int ret;
628
629 if (vsp1->info) {
630 ret = vsp1_device_init(vsp1);
631 if (ret < 0)
632 return ret;
633 }
634
635 return rcar_fcp_enable(vsp1->fcp);
636 }
637
638 static const struct dev_pm_ops vsp1_pm_ops = {
639 SET_SYSTEM_SLEEP_PM_OPS(vsp1_pm_suspend, vsp1_pm_resume)
640 SET_RUNTIME_PM_OPS(vsp1_pm_runtime_suspend, vsp1_pm_runtime_resume, NULL)
641 };
642
643 /* -----------------------------------------------------------------------------
644 * Platform Driver
645 */
646
647 static const struct vsp1_device_info vsp1_device_infos[] = {
648 {
649 .version = VI6_IP_VERSION_MODEL_VSPS_H2,
650 .model = "VSP1-S",
651 .gen = 2,
652 .features = VSP1_HAS_BRU | VSP1_HAS_CLU | VSP1_HAS_HGO
653 | VSP1_HAS_HGT | VSP1_HAS_LUT | VSP1_HAS_SRU
654 | VSP1_HAS_WPF_VFLIP,
655 .rpf_count = 5,
656 .uds_count = 3,
657 .wpf_count = 4,
658 .num_bru_inputs = 4,
659 .uapi = true,
660 }, {
661 .version = VI6_IP_VERSION_MODEL_VSPR_H2,
662 .model = "VSP1-R",
663 .gen = 2,
664 .features = VSP1_HAS_BRU | VSP1_HAS_SRU | VSP1_HAS_WPF_VFLIP,
665 .rpf_count = 5,
666 .uds_count = 3,
667 .wpf_count = 4,
668 .num_bru_inputs = 4,
669 .uapi = true,
670 }, {
671 .version = VI6_IP_VERSION_MODEL_VSPD_GEN2,
672 .model = "VSP1-D",
673 .gen = 2,
674 .features = VSP1_HAS_BRU | VSP1_HAS_HGO | VSP1_HAS_LUT,
675 .lif_count = 1,
676 .rpf_count = 4,
677 .uds_count = 1,
678 .wpf_count = 1,
679 .num_bru_inputs = 4,
680 .uapi = true,
681 }, {
682 .version = VI6_IP_VERSION_MODEL_VSPS_M2,
683 .model = "VSP1-S",
684 .gen = 2,
685 .features = VSP1_HAS_BRU | VSP1_HAS_CLU | VSP1_HAS_HGO
686 | VSP1_HAS_HGT | VSP1_HAS_LUT | VSP1_HAS_SRU
687 | VSP1_HAS_WPF_VFLIP,
688 .rpf_count = 5,
689 .uds_count = 1,
690 .wpf_count = 4,
691 .num_bru_inputs = 4,
692 .uapi = true,
693 }, {
694 .version = VI6_IP_VERSION_MODEL_VSPS_V2H,
695 .model = "VSP1V-S",
696 .gen = 2,
697 .features = VSP1_HAS_BRU | VSP1_HAS_CLU | VSP1_HAS_LUT
698 | VSP1_HAS_SRU | VSP1_HAS_WPF_VFLIP,
699 .rpf_count = 4,
700 .uds_count = 1,
701 .wpf_count = 4,
702 .num_bru_inputs = 4,
703 .uapi = true,
704 }, {
705 .version = VI6_IP_VERSION_MODEL_VSPD_V2H,
706 .model = "VSP1V-D",
707 .gen = 2,
708 .features = VSP1_HAS_BRU | VSP1_HAS_CLU | VSP1_HAS_LUT,
709 .lif_count = 1,
710 .rpf_count = 4,
711 .uds_count = 1,
712 .wpf_count = 1,
713 .num_bru_inputs = 4,
714 .uapi = true,
715 }, {
716 .version = VI6_IP_VERSION_MODEL_VSPI_GEN3,
717 .model = "VSP2-I",
718 .gen = 3,
719 .features = VSP1_HAS_CLU | VSP1_HAS_HGO | VSP1_HAS_HGT
720 | VSP1_HAS_LUT | VSP1_HAS_SRU | VSP1_HAS_WPF_HFLIP
721 | VSP1_HAS_WPF_VFLIP,
722 .rpf_count = 1,
723 .uds_count = 1,
724 .wpf_count = 1,
725 .uapi = true,
726 }, {
727 .version = VI6_IP_VERSION_MODEL_VSPBD_GEN3,
728 .model = "VSP2-BD",
729 .gen = 3,
730 .features = VSP1_HAS_BRU | VSP1_HAS_WPF_VFLIP,
731 .rpf_count = 5,
732 .wpf_count = 1,
733 .num_bru_inputs = 5,
734 .uapi = true,
735 }, {
736 .version = VI6_IP_VERSION_MODEL_VSPBC_GEN3,
737 .model = "VSP2-BC",
738 .gen = 3,
739 .features = VSP1_HAS_BRU | VSP1_HAS_CLU | VSP1_HAS_HGO
740 | VSP1_HAS_LUT | VSP1_HAS_WPF_VFLIP,
741 .rpf_count = 5,
742 .wpf_count = 1,
743 .num_bru_inputs = 5,
744 .uapi = true,
745 }, {
746 .version = VI6_IP_VERSION_MODEL_VSPBS_GEN3,
747 .model = "VSP2-BS",
748 .gen = 3,
749 .features = VSP1_HAS_BRS | VSP1_HAS_WPF_VFLIP,
750 .rpf_count = 2,
751 .wpf_count = 1,
752 .uapi = true,
753 }, {
754 .version = VI6_IP_VERSION_MODEL_VSPD_GEN3,
755 .model = "VSP2-D",
756 .gen = 3,
757 .features = VSP1_HAS_BRU | VSP1_HAS_WPF_VFLIP | VSP1_HAS_EXT_DL,
758 .lif_count = 1,
759 .rpf_count = 5,
760 .uif_count = 1,
761 .wpf_count = 2,
762 .num_bru_inputs = 5,
763 }, {
764 .version = VI6_IP_VERSION_MODEL_VSPD_V3,
765 .model = "VSP2-D",
766 .gen = 3,
767 .features = VSP1_HAS_BRS | VSP1_HAS_BRU,
768 .lif_count = 1,
769 .rpf_count = 5,
770 .uif_count = 1,
771 .wpf_count = 1,
772 .num_bru_inputs = 5,
773 }, {
774 .version = VI6_IP_VERSION_MODEL_VSPDL_GEN3,
775 .model = "VSP2-DL",
776 .gen = 3,
777 .features = VSP1_HAS_BRS | VSP1_HAS_BRU | VSP1_HAS_EXT_DL,
778 .lif_count = 2,
779 .rpf_count = 5,
780 .uif_count = 2,
781 .wpf_count = 2,
782 .num_bru_inputs = 5,
783 },
784 };
785
vsp1_probe(struct platform_device * pdev)786 static int vsp1_probe(struct platform_device *pdev)
787 {
788 struct vsp1_device *vsp1;
789 struct device_node *fcp_node;
790 struct resource *irq;
791 struct resource *io;
792 unsigned int i;
793 int ret;
794
795 vsp1 = devm_kzalloc(&pdev->dev, sizeof(*vsp1), GFP_KERNEL);
796 if (vsp1 == NULL)
797 return -ENOMEM;
798
799 vsp1->dev = &pdev->dev;
800 INIT_LIST_HEAD(&vsp1->entities);
801 INIT_LIST_HEAD(&vsp1->videos);
802
803 platform_set_drvdata(pdev, vsp1);
804
805 /* I/O and IRQ resources (clock managed by the clock PM domain) */
806 io = platform_get_resource(pdev, IORESOURCE_MEM, 0);
807 vsp1->mmio = devm_ioremap_resource(&pdev->dev, io);
808 if (IS_ERR(vsp1->mmio))
809 return PTR_ERR(vsp1->mmio);
810
811 irq = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
812 if (!irq) {
813 dev_err(&pdev->dev, "missing IRQ\n");
814 return -EINVAL;
815 }
816
817 ret = devm_request_irq(&pdev->dev, irq->start, vsp1_irq_handler,
818 IRQF_SHARED, dev_name(&pdev->dev), vsp1);
819 if (ret < 0) {
820 dev_err(&pdev->dev, "failed to request IRQ\n");
821 return ret;
822 }
823
824 /* FCP (optional) */
825 fcp_node = of_parse_phandle(pdev->dev.of_node, "renesas,fcp", 0);
826 if (fcp_node) {
827 vsp1->fcp = rcar_fcp_get(fcp_node);
828 of_node_put(fcp_node);
829 if (IS_ERR(vsp1->fcp)) {
830 dev_dbg(&pdev->dev, "FCP not found (%ld)\n",
831 PTR_ERR(vsp1->fcp));
832 return PTR_ERR(vsp1->fcp);
833 }
834
835 /*
836 * When the FCP is present, it handles all bus master accesses
837 * for the VSP and must thus be used in place of the VSP device
838 * to map DMA buffers.
839 */
840 vsp1->bus_master = rcar_fcp_get_device(vsp1->fcp);
841 } else {
842 vsp1->bus_master = vsp1->dev;
843 }
844
845 /* Configure device parameters based on the version register. */
846 pm_runtime_enable(&pdev->dev);
847
848 ret = pm_runtime_get_sync(&pdev->dev);
849 if (ret < 0)
850 goto done;
851
852 vsp1->version = vsp1_read(vsp1, VI6_IP_VERSION);
853 pm_runtime_put_sync(&pdev->dev);
854
855 for (i = 0; i < ARRAY_SIZE(vsp1_device_infos); ++i) {
856 if ((vsp1->version & VI6_IP_VERSION_MODEL_MASK) ==
857 vsp1_device_infos[i].version) {
858 vsp1->info = &vsp1_device_infos[i];
859 break;
860 }
861 }
862
863 if (!vsp1->info) {
864 dev_err(&pdev->dev, "unsupported IP version 0x%08x\n",
865 vsp1->version);
866 ret = -ENXIO;
867 goto done;
868 }
869
870 dev_dbg(&pdev->dev, "IP version 0x%08x\n", vsp1->version);
871
872 /* Instanciate entities */
873 ret = vsp1_create_entities(vsp1);
874 if (ret < 0) {
875 dev_err(&pdev->dev, "failed to create entities\n");
876 goto done;
877 }
878
879 done:
880 if (ret)
881 pm_runtime_disable(&pdev->dev);
882
883 return ret;
884 }
885
vsp1_remove(struct platform_device * pdev)886 static int vsp1_remove(struct platform_device *pdev)
887 {
888 struct vsp1_device *vsp1 = platform_get_drvdata(pdev);
889
890 vsp1_destroy_entities(vsp1);
891 rcar_fcp_put(vsp1->fcp);
892
893 pm_runtime_disable(&pdev->dev);
894
895 return 0;
896 }
897
898 static const struct of_device_id vsp1_of_match[] = {
899 { .compatible = "renesas,vsp1" },
900 { .compatible = "renesas,vsp2" },
901 { },
902 };
903 MODULE_DEVICE_TABLE(of, vsp1_of_match);
904
905 static struct platform_driver vsp1_platform_driver = {
906 .probe = vsp1_probe,
907 .remove = vsp1_remove,
908 .driver = {
909 .name = "vsp1",
910 .pm = &vsp1_pm_ops,
911 .of_match_table = vsp1_of_match,
912 },
913 };
914
915 module_platform_driver(vsp1_platform_driver);
916
917 MODULE_ALIAS("vsp1");
918 MODULE_AUTHOR("Laurent Pinchart <laurent.pinchart@ideasonboard.com>");
919 MODULE_DESCRIPTION("Renesas VSP1 Driver");
920 MODULE_LICENSE("GPL");
921
