1 /*
2 * vsp1_drv.c -- R-Car VSP1 Driver
3 *
4 * Copyright (C) 2013-2015 Renesas Electronics Corporation
5 *
6 * Contact: Laurent Pinchart (laurent.pinchart@ideasonboard.com)
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 */
13
14 #include <linux/clk.h>
15 #include <linux/delay.h>
16 #include <linux/device.h>
17 #include <linux/interrupt.h>
18 #include <linux/module.h>
19 #include <linux/of.h>
20 #include <linux/of_device.h>
21 #include <linux/platform_device.h>
22 #include <linux/pm_runtime.h>
23 #include <linux/videodev2.h>
24
25 #include <media/rcar-fcp.h>
26 #include <media/v4l2-subdev.h>
27
28 #include "vsp1.h"
29 #include "vsp1_bru.h"
30 #include "vsp1_clu.h"
31 #include "vsp1_dl.h"
32 #include "vsp1_drm.h"
33 #include "vsp1_hsit.h"
34 #include "vsp1_lif.h"
35 #include "vsp1_lut.h"
36 #include "vsp1_pipe.h"
37 #include "vsp1_rwpf.h"
38 #include "vsp1_sru.h"
39 #include "vsp1_uds.h"
40 #include "vsp1_video.h"
41
42 /* -----------------------------------------------------------------------------
43 * Interrupt Handling
44 */
45
vsp1_irq_handler(int irq,void * data)46 static irqreturn_t vsp1_irq_handler(int irq, void *data)
47 {
48 u32 mask = VI6_WFP_IRQ_STA_DFE | VI6_WFP_IRQ_STA_FRE;
49 struct vsp1_device *vsp1 = data;
50 irqreturn_t ret = IRQ_NONE;
51 unsigned int i;
52 u32 status;
53
54 for (i = 0; i < vsp1->info->wpf_count; ++i) {
55 struct vsp1_rwpf *wpf = vsp1->wpf[i];
56
57 if (wpf == NULL)
58 continue;
59
60 status = vsp1_read(vsp1, VI6_WPF_IRQ_STA(i));
61 vsp1_write(vsp1, VI6_WPF_IRQ_STA(i), ~status & mask);
62
63 if (status & VI6_WFP_IRQ_STA_DFE) {
64 vsp1_pipeline_frame_end(wpf->pipe);
65 ret = IRQ_HANDLED;
66 }
67 }
68
69 status = vsp1_read(vsp1, VI6_DISP_IRQ_STA);
70 vsp1_write(vsp1, VI6_DISP_IRQ_STA, ~status & VI6_DISP_IRQ_STA_DST);
71
72 if (status & VI6_DISP_IRQ_STA_DST) {
73 vsp1_drm_display_start(vsp1);
74 ret = IRQ_HANDLED;
75 }
76
77 return ret;
78 }
79
80 /* -----------------------------------------------------------------------------
81 * Entities
82 */
83
84 /*
85 * vsp1_create_sink_links - Create links from all sources to the given sink
86 *
87 * This function creates media links from all valid sources to the given sink
88 * pad. Links that would be invalid according to the VSP1 hardware capabilities
89 * are skipped. Those include all links
90 *
91 * - from a UDS to a UDS (UDS entities can't be chained)
92 * - from an entity to itself (no loops are allowed)
93 */
vsp1_create_sink_links(struct vsp1_device * vsp1,struct vsp1_entity * sink)94 static int vsp1_create_sink_links(struct vsp1_device *vsp1,
95 struct vsp1_entity *sink)
96 {
97 struct media_entity *entity = &sink->subdev.entity;
98 struct vsp1_entity *source;
99 unsigned int pad;
100 int ret;
101
102 list_for_each_entry(source, &vsp1->entities, list_dev) {
103 u32 flags;
104
105 if (source->type == sink->type)
106 continue;
107
108 if (source->type == VSP1_ENTITY_LIF ||
109 source->type == VSP1_ENTITY_WPF)
110 continue;
111
112 flags = source->type == VSP1_ENTITY_RPF &&
113 sink->type == VSP1_ENTITY_WPF &&
114 source->index == sink->index
115 ? MEDIA_LNK_FL_ENABLED : 0;
116
117 for (pad = 0; pad < entity->num_pads; ++pad) {
118 if (!(entity->pads[pad].flags & MEDIA_PAD_FL_SINK))
119 continue;
120
121 ret = media_create_pad_link(&source->subdev.entity,
122 source->source_pad,
123 entity, pad, flags);
124 if (ret < 0)
125 return ret;
126
127 if (flags & MEDIA_LNK_FL_ENABLED)
128 source->sink = entity;
129 }
130 }
131
132 return 0;
133 }
134
vsp1_uapi_create_links(struct vsp1_device * vsp1)135 static int vsp1_uapi_create_links(struct vsp1_device *vsp1)
136 {
137 struct vsp1_entity *entity;
138 unsigned int i;
139 int ret;
140
141 list_for_each_entry(entity, &vsp1->entities, list_dev) {
142 if (entity->type == VSP1_ENTITY_LIF ||
143 entity->type == VSP1_ENTITY_RPF)
144 continue;
145
146 ret = vsp1_create_sink_links(vsp1, entity);
147 if (ret < 0)
148 return ret;
149 }
150
151 if (vsp1->lif) {
152 ret = media_create_pad_link(&vsp1->wpf[0]->entity.subdev.entity,
153 RWPF_PAD_SOURCE,
154 &vsp1->lif->entity.subdev.entity,
155 LIF_PAD_SINK, 0);
156 if (ret < 0)
157 return ret;
158 }
159
160 for (i = 0; i < vsp1->info->rpf_count; ++i) {
161 struct vsp1_rwpf *rpf = vsp1->rpf[i];
162
163 ret = media_create_pad_link(&rpf->video->video.entity, 0,
164 &rpf->entity.subdev.entity,
165 RWPF_PAD_SINK,
166 MEDIA_LNK_FL_ENABLED |
167 MEDIA_LNK_FL_IMMUTABLE);
168 if (ret < 0)
169 return ret;
170 }
171
172 for (i = 0; i < vsp1->info->wpf_count; ++i) {
173 /* Connect the video device to the WPF. All connections are
174 * immutable.
175 */
176 struct vsp1_rwpf *wpf = vsp1->wpf[i];
177
178 ret = media_create_pad_link(&wpf->entity.subdev.entity,
179 RWPF_PAD_SOURCE,
180 &wpf->video->video.entity, 0,
181 MEDIA_LNK_FL_IMMUTABLE |
182 MEDIA_LNK_FL_ENABLED);
183 if (ret < 0)
184 return ret;
185 }
186
187 return 0;
188 }
189
vsp1_destroy_entities(struct vsp1_device * vsp1)190 static void vsp1_destroy_entities(struct vsp1_device *vsp1)
191 {
192 struct vsp1_entity *entity, *_entity;
193 struct vsp1_video *video, *_video;
194
195 list_for_each_entry_safe(entity, _entity, &vsp1->entities, list_dev) {
196 list_del(&entity->list_dev);
197 vsp1_entity_destroy(entity);
198 }
199
200 list_for_each_entry_safe(video, _video, &vsp1->videos, list) {
201 list_del(&video->list);
202 vsp1_video_cleanup(video);
203 }
204
205 v4l2_device_unregister(&vsp1->v4l2_dev);
206 if (vsp1->info->uapi)
207 media_device_unregister(&vsp1->media_dev);
208 media_device_cleanup(&vsp1->media_dev);
209
210 if (!vsp1->info->uapi)
211 vsp1_drm_cleanup(vsp1);
212 }
213
vsp1_create_entities(struct vsp1_device * vsp1)214 static int vsp1_create_entities(struct vsp1_device *vsp1)
215 {
216 struct media_device *mdev = &vsp1->media_dev;
217 struct v4l2_device *vdev = &vsp1->v4l2_dev;
218 struct vsp1_entity *entity;
219 unsigned int i;
220 int ret;
221
222 mdev->dev = vsp1->dev;
223 mdev->hw_revision = vsp1->version;
224 strlcpy(mdev->model, vsp1->info->model, sizeof(mdev->model));
225 snprintf(mdev->bus_info, sizeof(mdev->bus_info), "platform:%s",
226 dev_name(mdev->dev));
227 media_device_init(mdev);
228
229 vsp1->media_ops.link_setup = vsp1_entity_link_setup;
230 /* Don't perform link validation when the userspace API is disabled as
231 * the pipeline is configured internally by the driver in that case, and
232 * its configuration can thus be trusted.
233 */
234 if (vsp1->info->uapi)
235 vsp1->media_ops.link_validate = v4l2_subdev_link_validate;
236
237 vdev->mdev = mdev;
238 ret = v4l2_device_register(vsp1->dev, vdev);
239 if (ret < 0) {
240 dev_err(vsp1->dev, "V4L2 device registration failed (%d)\n",
241 ret);
242 goto done;
243 }
244
245 /* Instantiate all the entities. */
246 if (vsp1->info->features & VSP1_HAS_BRU) {
247 vsp1->bru = vsp1_bru_create(vsp1);
248 if (IS_ERR(vsp1->bru)) {
249 ret = PTR_ERR(vsp1->bru);
250 goto done;
251 }
252
253 list_add_tail(&vsp1->bru->entity.list_dev, &vsp1->entities);
254 }
255
256 if (vsp1->info->features & VSP1_HAS_CLU) {
257 vsp1->clu = vsp1_clu_create(vsp1);
258 if (IS_ERR(vsp1->clu)) {
259 ret = PTR_ERR(vsp1->clu);
260 goto done;
261 }
262
263 list_add_tail(&vsp1->clu->entity.list_dev, &vsp1->entities);
264 }
265
266 vsp1->hsi = vsp1_hsit_create(vsp1, true);
267 if (IS_ERR(vsp1->hsi)) {
268 ret = PTR_ERR(vsp1->hsi);
269 goto done;
270 }
271
272 list_add_tail(&vsp1->hsi->entity.list_dev, &vsp1->entities);
273
274 vsp1->hst = vsp1_hsit_create(vsp1, false);
275 if (IS_ERR(vsp1->hst)) {
276 ret = PTR_ERR(vsp1->hst);
277 goto done;
278 }
279
280 list_add_tail(&vsp1->hst->entity.list_dev, &vsp1->entities);
281
282 /* The LIF is only supported when used in conjunction with the DU, in
283 * which case the userspace API is disabled. If the userspace API is
284 * enabled skip the LIF, even when present.
285 */
286 if (vsp1->info->features & VSP1_HAS_LIF && !vsp1->info->uapi) {
287 vsp1->lif = vsp1_lif_create(vsp1);
288 if (IS_ERR(vsp1->lif)) {
289 ret = PTR_ERR(vsp1->lif);
290 goto done;
291 }
292
293 list_add_tail(&vsp1->lif->entity.list_dev, &vsp1->entities);
294 }
295
296 if (vsp1->info->features & VSP1_HAS_LUT) {
297 vsp1->lut = vsp1_lut_create(vsp1);
298 if (IS_ERR(vsp1->lut)) {
299 ret = PTR_ERR(vsp1->lut);
300 goto done;
301 }
302
303 list_add_tail(&vsp1->lut->entity.list_dev, &vsp1->entities);
304 }
305
306 for (i = 0; i < vsp1->info->rpf_count; ++i) {
307 struct vsp1_rwpf *rpf;
308
309 rpf = vsp1_rpf_create(vsp1, i);
310 if (IS_ERR(rpf)) {
311 ret = PTR_ERR(rpf);
312 goto done;
313 }
314
315 vsp1->rpf[i] = rpf;
316 list_add_tail(&rpf->entity.list_dev, &vsp1->entities);
317
318 if (vsp1->info->uapi) {
319 struct vsp1_video *video = vsp1_video_create(vsp1, rpf);
320
321 if (IS_ERR(video)) {
322 ret = PTR_ERR(video);
323 goto done;
324 }
325
326 list_add_tail(&video->list, &vsp1->videos);
327 }
328 }
329
330 if (vsp1->info->features & VSP1_HAS_SRU) {
331 vsp1->sru = vsp1_sru_create(vsp1);
332 if (IS_ERR(vsp1->sru)) {
333 ret = PTR_ERR(vsp1->sru);
334 goto done;
335 }
336
337 list_add_tail(&vsp1->sru->entity.list_dev, &vsp1->entities);
338 }
339
340 for (i = 0; i < vsp1->info->uds_count; ++i) {
341 struct vsp1_uds *uds;
342
343 uds = vsp1_uds_create(vsp1, i);
344 if (IS_ERR(uds)) {
345 ret = PTR_ERR(uds);
346 goto done;
347 }
348
349 vsp1->uds[i] = uds;
350 list_add_tail(&uds->entity.list_dev, &vsp1->entities);
351 }
352
353 for (i = 0; i < vsp1->info->wpf_count; ++i) {
354 struct vsp1_rwpf *wpf;
355
356 wpf = vsp1_wpf_create(vsp1, i);
357 if (IS_ERR(wpf)) {
358 ret = PTR_ERR(wpf);
359 goto done;
360 }
361
362 vsp1->wpf[i] = wpf;
363 list_add_tail(&wpf->entity.list_dev, &vsp1->entities);
364
365 if (vsp1->info->uapi) {
366 struct vsp1_video *video = vsp1_video_create(vsp1, wpf);
367
368 if (IS_ERR(video)) {
369 ret = PTR_ERR(video);
370 goto done;
371 }
372
373 list_add_tail(&video->list, &vsp1->videos);
374 wpf->entity.sink = &video->video.entity;
375 }
376 }
377
378 /* Register all subdevs. */
379 list_for_each_entry(entity, &vsp1->entities, list_dev) {
380 ret = v4l2_device_register_subdev(&vsp1->v4l2_dev,
381 &entity->subdev);
382 if (ret < 0)
383 goto done;
384 }
385
386 /* Create links. */
387 if (vsp1->info->uapi)
388 ret = vsp1_uapi_create_links(vsp1);
389 else
390 ret = vsp1_drm_create_links(vsp1);
391 if (ret < 0)
392 goto done;
393
394 /* Register subdev nodes if the userspace API is enabled or initialize
395 * the DRM pipeline otherwise.
396 */
397 if (vsp1->info->uapi) {
398 ret = v4l2_device_register_subdev_nodes(&vsp1->v4l2_dev);
399 if (ret < 0)
400 goto done;
401
402 ret = media_device_register(mdev);
403 } else {
404 ret = vsp1_drm_init(vsp1);
405 }
406
407 done:
408 if (ret < 0)
409 vsp1_destroy_entities(vsp1);
410
411 return ret;
412 }
413
vsp1_reset_wpf(struct vsp1_device * vsp1,unsigned int index)414 int vsp1_reset_wpf(struct vsp1_device *vsp1, unsigned int index)
415 {
416 unsigned int timeout;
417 u32 status;
418
419 status = vsp1_read(vsp1, VI6_STATUS);
420 if (!(status & VI6_STATUS_SYS_ACT(index)))
421 return 0;
422
423 vsp1_write(vsp1, VI6_SRESET, VI6_SRESET_SRTS(index));
424 for (timeout = 10; timeout > 0; --timeout) {
425 status = vsp1_read(vsp1, VI6_STATUS);
426 if (!(status & VI6_STATUS_SYS_ACT(index)))
427 break;
428
429 usleep_range(1000, 2000);
430 }
431
432 if (!timeout) {
433 dev_err(vsp1->dev, "failed to reset wpf.%u\n", index);
434 return -ETIMEDOUT;
435 }
436
437 return 0;
438 }
439
vsp1_device_init(struct vsp1_device * vsp1)440 static int vsp1_device_init(struct vsp1_device *vsp1)
441 {
442 unsigned int i;
443 int ret;
444
445 /* Reset any channel that might be running. */
446 for (i = 0; i < vsp1->info->wpf_count; ++i) {
447 ret = vsp1_reset_wpf(vsp1, i);
448 if (ret < 0)
449 return ret;
450 }
451
452 vsp1_write(vsp1, VI6_CLK_DCSWT, (8 << VI6_CLK_DCSWT_CSTPW_SHIFT) |
453 (8 << VI6_CLK_DCSWT_CSTRW_SHIFT));
454
455 for (i = 0; i < vsp1->info->rpf_count; ++i)
456 vsp1_write(vsp1, VI6_DPR_RPF_ROUTE(i), VI6_DPR_NODE_UNUSED);
457
458 for (i = 0; i < vsp1->info->uds_count; ++i)
459 vsp1_write(vsp1, VI6_DPR_UDS_ROUTE(i), VI6_DPR_NODE_UNUSED);
460
461 vsp1_write(vsp1, VI6_DPR_SRU_ROUTE, VI6_DPR_NODE_UNUSED);
462 vsp1_write(vsp1, VI6_DPR_LUT_ROUTE, VI6_DPR_NODE_UNUSED);
463 vsp1_write(vsp1, VI6_DPR_CLU_ROUTE, VI6_DPR_NODE_UNUSED);
464 vsp1_write(vsp1, VI6_DPR_HST_ROUTE, VI6_DPR_NODE_UNUSED);
465 vsp1_write(vsp1, VI6_DPR_HSI_ROUTE, VI6_DPR_NODE_UNUSED);
466 vsp1_write(vsp1, VI6_DPR_BRU_ROUTE, VI6_DPR_NODE_UNUSED);
467
468 vsp1_write(vsp1, VI6_DPR_HGO_SMPPT, (7 << VI6_DPR_SMPPT_TGW_SHIFT) |
469 (VI6_DPR_NODE_UNUSED << VI6_DPR_SMPPT_PT_SHIFT));
470 vsp1_write(vsp1, VI6_DPR_HGT_SMPPT, (7 << VI6_DPR_SMPPT_TGW_SHIFT) |
471 (VI6_DPR_NODE_UNUSED << VI6_DPR_SMPPT_PT_SHIFT));
472
473 vsp1_dlm_setup(vsp1);
474
475 return 0;
476 }
477
478 /*
479 * vsp1_device_get - Acquire the VSP1 device
480 *
481 * Make sure the device is not suspended and initialize it if needed.
482 *
483 * Return 0 on success or a negative error code otherwise.
484 */
vsp1_device_get(struct vsp1_device * vsp1)485 int vsp1_device_get(struct vsp1_device *vsp1)
486 {
487 int ret;
488
489 ret = pm_runtime_get_sync(vsp1->dev);
490 return ret < 0 ? ret : 0;
491 }
492
493 /*
494 * vsp1_device_put - Release the VSP1 device
495 *
496 * Decrement the VSP1 reference count and cleanup the device if the last
497 * reference is released.
498 */
vsp1_device_put(struct vsp1_device * vsp1)499 void vsp1_device_put(struct vsp1_device *vsp1)
500 {
501 pm_runtime_put_sync(vsp1->dev);
502 }
503
504 /* -----------------------------------------------------------------------------
505 * Power Management
506 */
507
vsp1_pm_suspend(struct device * dev)508 static int __maybe_unused vsp1_pm_suspend(struct device *dev)
509 {
510 struct vsp1_device *vsp1 = dev_get_drvdata(dev);
511
512 /*
513 * When used as part of a display pipeline, the VSP is stopped and
514 * restarted explicitly by the DU.
515 */
516 if (!vsp1->drm)
517 vsp1_pipelines_suspend(vsp1);
518
519 pm_runtime_force_suspend(vsp1->dev);
520
521 return 0;
522 }
523
vsp1_pm_resume(struct device * dev)524 static int __maybe_unused vsp1_pm_resume(struct device *dev)
525 {
526 struct vsp1_device *vsp1 = dev_get_drvdata(dev);
527
528 pm_runtime_force_resume(vsp1->dev);
529
530 /*
531 * When used as part of a display pipeline, the VSP is stopped and
532 * restarted explicitly by the DU.
533 */
534 if (!vsp1->drm)
535 vsp1_pipelines_resume(vsp1);
536
537 return 0;
538 }
539
vsp1_pm_runtime_suspend(struct device * dev)540 static int __maybe_unused vsp1_pm_runtime_suspend(struct device *dev)
541 {
542 struct vsp1_device *vsp1 = dev_get_drvdata(dev);
543
544 rcar_fcp_disable(vsp1->fcp);
545
546 return 0;
547 }
548
vsp1_pm_runtime_resume(struct device * dev)549 static int __maybe_unused vsp1_pm_runtime_resume(struct device *dev)
550 {
551 struct vsp1_device *vsp1 = dev_get_drvdata(dev);
552 int ret;
553
554 if (vsp1->info) {
555 ret = vsp1_device_init(vsp1);
556 if (ret < 0)
557 return ret;
558 }
559
560 return rcar_fcp_enable(vsp1->fcp);
561 }
562
563 static const struct dev_pm_ops vsp1_pm_ops = {
564 SET_SYSTEM_SLEEP_PM_OPS(vsp1_pm_suspend, vsp1_pm_resume)
565 SET_RUNTIME_PM_OPS(vsp1_pm_runtime_suspend, vsp1_pm_runtime_resume, NULL)
566 };
567
568 /* -----------------------------------------------------------------------------
569 * Platform Driver
570 */
571
572 static const struct vsp1_device_info vsp1_device_infos[] = {
573 {
574 .version = VI6_IP_VERSION_MODEL_VSPS_H2,
575 .model = "VSP1-S",
576 .gen = 2,
577 .features = VSP1_HAS_BRU | VSP1_HAS_CLU | VSP1_HAS_LUT
578 | VSP1_HAS_SRU | VSP1_HAS_WPF_VFLIP,
579 .rpf_count = 5,
580 .uds_count = 3,
581 .wpf_count = 4,
582 .num_bru_inputs = 4,
583 .uapi = true,
584 }, {
585 .version = VI6_IP_VERSION_MODEL_VSPR_H2,
586 .model = "VSP1-R",
587 .gen = 2,
588 .features = VSP1_HAS_BRU | VSP1_HAS_SRU | VSP1_HAS_WPF_VFLIP,
589 .rpf_count = 5,
590 .uds_count = 3,
591 .wpf_count = 4,
592 .num_bru_inputs = 4,
593 .uapi = true,
594 }, {
595 .version = VI6_IP_VERSION_MODEL_VSPD_GEN2,
596 .model = "VSP1-D",
597 .gen = 2,
598 .features = VSP1_HAS_BRU | VSP1_HAS_LIF | VSP1_HAS_LUT,
599 .rpf_count = 4,
600 .uds_count = 1,
601 .wpf_count = 1,
602 .num_bru_inputs = 4,
603 .uapi = true,
604 }, {
605 .version = VI6_IP_VERSION_MODEL_VSPS_M2,
606 .model = "VSP1-S",
607 .gen = 2,
608 .features = VSP1_HAS_BRU | VSP1_HAS_CLU | VSP1_HAS_LUT
609 | VSP1_HAS_SRU | VSP1_HAS_WPF_VFLIP,
610 .rpf_count = 5,
611 .uds_count = 1,
612 .wpf_count = 4,
613 .num_bru_inputs = 4,
614 .uapi = true,
615 }, {
616 .version = VI6_IP_VERSION_MODEL_VSPS_V2H,
617 .model = "VSP1V-S",
618 .gen = 2,
619 .features = VSP1_HAS_BRU | VSP1_HAS_CLU | VSP1_HAS_LUT
620 | VSP1_HAS_SRU | VSP1_HAS_WPF_VFLIP,
621 .rpf_count = 4,
622 .uds_count = 1,
623 .wpf_count = 4,
624 .num_bru_inputs = 4,
625 .uapi = true,
626 }, {
627 .version = VI6_IP_VERSION_MODEL_VSPD_V2H,
628 .model = "VSP1V-D",
629 .gen = 2,
630 .features = VSP1_HAS_BRU | VSP1_HAS_CLU | VSP1_HAS_LUT
631 | VSP1_HAS_LIF,
632 .rpf_count = 4,
633 .uds_count = 1,
634 .wpf_count = 1,
635 .num_bru_inputs = 4,
636 .uapi = true,
637 }, {
638 .version = VI6_IP_VERSION_MODEL_VSPI_GEN3,
639 .model = "VSP2-I",
640 .gen = 3,
641 .features = VSP1_HAS_CLU | VSP1_HAS_LUT | VSP1_HAS_SRU
642 | VSP1_HAS_WPF_HFLIP | VSP1_HAS_WPF_VFLIP,
643 .rpf_count = 1,
644 .uds_count = 1,
645 .wpf_count = 1,
646 .uapi = true,
647 }, {
648 .version = VI6_IP_VERSION_MODEL_VSPBD_GEN3,
649 .model = "VSP2-BD",
650 .gen = 3,
651 .features = VSP1_HAS_BRU | VSP1_HAS_WPF_VFLIP,
652 .rpf_count = 5,
653 .wpf_count = 1,
654 .num_bru_inputs = 5,
655 .uapi = true,
656 }, {
657 .version = VI6_IP_VERSION_MODEL_VSPBC_GEN3,
658 .model = "VSP2-BC",
659 .gen = 3,
660 .features = VSP1_HAS_BRU | VSP1_HAS_CLU | VSP1_HAS_LUT
661 | VSP1_HAS_WPF_VFLIP,
662 .rpf_count = 5,
663 .wpf_count = 1,
664 .num_bru_inputs = 5,
665 .uapi = true,
666 }, {
667 .version = VI6_IP_VERSION_MODEL_VSPD_GEN3,
668 .model = "VSP2-D",
669 .gen = 3,
670 .features = VSP1_HAS_BRU | VSP1_HAS_LIF | VSP1_HAS_WPF_VFLIP,
671 .rpf_count = 5,
672 .wpf_count = 2,
673 .num_bru_inputs = 5,
674 },
675 };
676
vsp1_probe(struct platform_device * pdev)677 static int vsp1_probe(struct platform_device *pdev)
678 {
679 struct vsp1_device *vsp1;
680 struct device_node *fcp_node;
681 struct resource *irq;
682 struct resource *io;
683 unsigned int i;
684 int ret;
685
686 vsp1 = devm_kzalloc(&pdev->dev, sizeof(*vsp1), GFP_KERNEL);
687 if (vsp1 == NULL)
688 return -ENOMEM;
689
690 vsp1->dev = &pdev->dev;
691 INIT_LIST_HEAD(&vsp1->entities);
692 INIT_LIST_HEAD(&vsp1->videos);
693
694 platform_set_drvdata(pdev, vsp1);
695
696 /* I/O and IRQ resources (clock managed by the clock PM domain) */
697 io = platform_get_resource(pdev, IORESOURCE_MEM, 0);
698 vsp1->mmio = devm_ioremap_resource(&pdev->dev, io);
699 if (IS_ERR(vsp1->mmio))
700 return PTR_ERR(vsp1->mmio);
701
702 irq = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
703 if (!irq) {
704 dev_err(&pdev->dev, "missing IRQ\n");
705 return -EINVAL;
706 }
707
708 ret = devm_request_irq(&pdev->dev, irq->start, vsp1_irq_handler,
709 IRQF_SHARED, dev_name(&pdev->dev), vsp1);
710 if (ret < 0) {
711 dev_err(&pdev->dev, "failed to request IRQ\n");
712 return ret;
713 }
714
715 /* FCP (optional) */
716 fcp_node = of_parse_phandle(pdev->dev.of_node, "renesas,fcp", 0);
717 if (fcp_node) {
718 vsp1->fcp = rcar_fcp_get(fcp_node);
719 of_node_put(fcp_node);
720 if (IS_ERR(vsp1->fcp)) {
721 dev_dbg(&pdev->dev, "FCP not found (%ld)\n",
722 PTR_ERR(vsp1->fcp));
723 return PTR_ERR(vsp1->fcp);
724 }
725 }
726
727 /* Configure device parameters based on the version register. */
728 pm_runtime_enable(&pdev->dev);
729
730 ret = pm_runtime_get_sync(&pdev->dev);
731 if (ret < 0)
732 goto done;
733
734 vsp1->version = vsp1_read(vsp1, VI6_IP_VERSION);
735 pm_runtime_put_sync(&pdev->dev);
736
737 for (i = 0; i < ARRAY_SIZE(vsp1_device_infos); ++i) {
738 if ((vsp1->version & VI6_IP_VERSION_MODEL_MASK) ==
739 vsp1_device_infos[i].version) {
740 vsp1->info = &vsp1_device_infos[i];
741 break;
742 }
743 }
744
745 if (!vsp1->info) {
746 dev_err(&pdev->dev, "unsupported IP version 0x%08x\n",
747 vsp1->version);
748 ret = -ENXIO;
749 goto done;
750 }
751
752 dev_dbg(&pdev->dev, "IP version 0x%08x\n", vsp1->version);
753
754 /* Instanciate entities */
755 ret = vsp1_create_entities(vsp1);
756 if (ret < 0) {
757 dev_err(&pdev->dev, "failed to create entities\n");
758 goto done;
759 }
760
761 done:
762 if (ret)
763 pm_runtime_disable(&pdev->dev);
764
765 return ret;
766 }
767
vsp1_remove(struct platform_device * pdev)768 static int vsp1_remove(struct platform_device *pdev)
769 {
770 struct vsp1_device *vsp1 = platform_get_drvdata(pdev);
771
772 vsp1_destroy_entities(vsp1);
773 rcar_fcp_put(vsp1->fcp);
774
775 pm_runtime_disable(&pdev->dev);
776
777 return 0;
778 }
779
780 static const struct of_device_id vsp1_of_match[] = {
781 { .compatible = "renesas,vsp1" },
782 { .compatible = "renesas,vsp2" },
783 { },
784 };
785
786 static struct platform_driver vsp1_platform_driver = {
787 .probe = vsp1_probe,
788 .remove = vsp1_remove,
789 .driver = {
790 .name = "vsp1",
791 .pm = &vsp1_pm_ops,
792 .of_match_table = vsp1_of_match,
793 },
794 };
795
796 module_platform_driver(vsp1_platform_driver);
797
798 MODULE_ALIAS("vsp1");
799 MODULE_AUTHOR("Laurent Pinchart <laurent.pinchart@ideasonboard.com>");
800 MODULE_DESCRIPTION("Renesas VSP1 Driver");
801 MODULE_LICENSE("GPL");
802