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14#include <drm/drmP.h>
15#include <drm/drm_atomic.h>
16#include <drm/drm_atomic_helper.h>
17#include <drm/drm_crtc.h>
18#include <drm/drm_crtc_helper.h>
19#include <drm/drm_fb_cma_helper.h>
20#include <drm/drm_gem_cma_helper.h>
21#include <drm/drm_gem_framebuffer_helper.h>
22
23#include <linux/of_graph.h>
24#include <linux/wait.h>
25
26#include "rcar_du_crtc.h"
27#include "rcar_du_drv.h"
28#include "rcar_du_encoder.h"
29#include "rcar_du_kms.h"
30#include "rcar_du_regs.h"
31#include "rcar_du_vsp.h"
32
33
34
35
36
37static const struct rcar_du_format_info rcar_du_format_infos[] = {
38 {
39 .fourcc = DRM_FORMAT_RGB565,
40 .bpp = 16,
41 .planes = 1,
42 .pnmr = PnMR_SPIM_TP | PnMR_DDDF_16BPP,
43 .edf = PnDDCR4_EDF_NONE,
44 }, {
45 .fourcc = DRM_FORMAT_ARGB1555,
46 .bpp = 16,
47 .planes = 1,
48 .pnmr = PnMR_SPIM_ALP | PnMR_DDDF_ARGB,
49 .edf = PnDDCR4_EDF_NONE,
50 }, {
51 .fourcc = DRM_FORMAT_XRGB1555,
52 .bpp = 16,
53 .planes = 1,
54 .pnmr = PnMR_SPIM_ALP | PnMR_DDDF_ARGB,
55 .edf = PnDDCR4_EDF_NONE,
56 }, {
57 .fourcc = DRM_FORMAT_XRGB8888,
58 .bpp = 32,
59 .planes = 1,
60 .pnmr = PnMR_SPIM_TP | PnMR_DDDF_16BPP,
61 .edf = PnDDCR4_EDF_RGB888,
62 }, {
63 .fourcc = DRM_FORMAT_ARGB8888,
64 .bpp = 32,
65 .planes = 1,
66 .pnmr = PnMR_SPIM_ALP | PnMR_DDDF_16BPP,
67 .edf = PnDDCR4_EDF_ARGB8888,
68 }, {
69 .fourcc = DRM_FORMAT_UYVY,
70 .bpp = 16,
71 .planes = 1,
72 .pnmr = PnMR_SPIM_TP_OFF | PnMR_DDDF_YC,
73 .edf = PnDDCR4_EDF_NONE,
74 }, {
75 .fourcc = DRM_FORMAT_YUYV,
76 .bpp = 16,
77 .planes = 1,
78 .pnmr = PnMR_SPIM_TP_OFF | PnMR_DDDF_YC,
79 .edf = PnDDCR4_EDF_NONE,
80 }, {
81 .fourcc = DRM_FORMAT_NV12,
82 .bpp = 12,
83 .planes = 2,
84 .pnmr = PnMR_SPIM_TP_OFF | PnMR_DDDF_YC,
85 .edf = PnDDCR4_EDF_NONE,
86 }, {
87 .fourcc = DRM_FORMAT_NV21,
88 .bpp = 12,
89 .planes = 2,
90 .pnmr = PnMR_SPIM_TP_OFF | PnMR_DDDF_YC,
91 .edf = PnDDCR4_EDF_NONE,
92 }, {
93 .fourcc = DRM_FORMAT_NV16,
94 .bpp = 16,
95 .planes = 2,
96 .pnmr = PnMR_SPIM_TP_OFF | PnMR_DDDF_YC,
97 .edf = PnDDCR4_EDF_NONE,
98 },
99
100
101
102
103 {
104 .fourcc = DRM_FORMAT_NV61,
105 .bpp = 16,
106 .planes = 2,
107 }, {
108 .fourcc = DRM_FORMAT_YUV420,
109 .bpp = 12,
110 .planes = 3,
111 }, {
112 .fourcc = DRM_FORMAT_YVU420,
113 .bpp = 12,
114 .planes = 3,
115 }, {
116 .fourcc = DRM_FORMAT_YUV422,
117 .bpp = 16,
118 .planes = 3,
119 }, {
120 .fourcc = DRM_FORMAT_YVU422,
121 .bpp = 16,
122 .planes = 3,
123 }, {
124 .fourcc = DRM_FORMAT_YUV444,
125 .bpp = 24,
126 .planes = 3,
127 }, {
128 .fourcc = DRM_FORMAT_YVU444,
129 .bpp = 24,
130 .planes = 3,
131 },
132};
133
134const struct rcar_du_format_info *rcar_du_format_info(u32 fourcc)
135{
136 unsigned int i;
137
138 for (i = 0; i < ARRAY_SIZE(rcar_du_format_infos); ++i) {
139 if (rcar_du_format_infos[i].fourcc == fourcc)
140 return &rcar_du_format_infos[i];
141 }
142
143 return NULL;
144}
145
146
147
148
149
150int rcar_du_dumb_create(struct drm_file *file, struct drm_device *dev,
151 struct drm_mode_create_dumb *args)
152{
153 struct rcar_du_device *rcdu = dev->dev_private;
154 unsigned int min_pitch = DIV_ROUND_UP(args->width * args->bpp, 8);
155 unsigned int align;
156
157
158
159
160
161 if (rcar_du_needs(rcdu, RCAR_DU_QUIRK_ALIGN_128B))
162 align = 128;
163 else
164 align = 16 * args->bpp / 8;
165
166 args->pitch = roundup(min_pitch, align);
167
168 return drm_gem_cma_dumb_create_internal(file, dev, args);
169}
170
171static struct drm_framebuffer *
172rcar_du_fb_create(struct drm_device *dev, struct drm_file *file_priv,
173 const struct drm_mode_fb_cmd2 *mode_cmd)
174{
175 struct rcar_du_device *rcdu = dev->dev_private;
176 const struct rcar_du_format_info *format;
177 unsigned int max_pitch;
178 unsigned int align;
179 unsigned int bpp;
180 unsigned int i;
181
182 format = rcar_du_format_info(mode_cmd->pixel_format);
183 if (format == NULL) {
184 dev_dbg(dev->dev, "unsupported pixel format %08x\n",
185 mode_cmd->pixel_format);
186 return ERR_PTR(-EINVAL);
187 }
188
189
190
191
192
193 bpp = format->planes == 1 ? format->bpp / 8 : 1;
194 max_pitch = 4096 * bpp;
195
196 if (rcar_du_needs(rcdu, RCAR_DU_QUIRK_ALIGN_128B))
197 align = 128;
198 else
199 align = 16 * bpp;
200
201 if (mode_cmd->pitches[0] & (align - 1) ||
202 mode_cmd->pitches[0] >= max_pitch) {
203 dev_dbg(dev->dev, "invalid pitch value %u\n",
204 mode_cmd->pitches[0]);
205 return ERR_PTR(-EINVAL);
206 }
207
208 for (i = 1; i < format->planes; ++i) {
209 if (mode_cmd->pitches[i] != mode_cmd->pitches[0]) {
210 dev_dbg(dev->dev,
211 "luma and chroma pitches do not match\n");
212 return ERR_PTR(-EINVAL);
213 }
214 }
215
216 return drm_gem_fb_create(dev, file_priv, mode_cmd);
217}
218
219static void rcar_du_output_poll_changed(struct drm_device *dev)
220{
221 struct rcar_du_device *rcdu = dev->dev_private;
222
223 drm_fbdev_cma_hotplug_event(rcdu->fbdev);
224}
225
226
227
228
229
230static int rcar_du_atomic_check(struct drm_device *dev,
231 struct drm_atomic_state *state)
232{
233 struct rcar_du_device *rcdu = dev->dev_private;
234 int ret;
235
236 ret = drm_atomic_helper_check_modeset(dev, state);
237 if (ret)
238 return ret;
239
240 ret = drm_atomic_normalize_zpos(dev, state);
241 if (ret)
242 return ret;
243
244 ret = drm_atomic_helper_check_planes(dev, state);
245 if (ret)
246 return ret;
247
248 if (rcar_du_has(rcdu, RCAR_DU_FEATURE_VSP1_SOURCE))
249 return 0;
250
251 return rcar_du_atomic_check_planes(dev, state);
252}
253
254static void rcar_du_atomic_commit_tail(struct drm_atomic_state *old_state)
255{
256 struct drm_device *dev = old_state->dev;
257
258
259 drm_atomic_helper_commit_modeset_disables(dev, old_state);
260 drm_atomic_helper_commit_planes(dev, old_state,
261 DRM_PLANE_COMMIT_ACTIVE_ONLY);
262 drm_atomic_helper_commit_modeset_enables(dev, old_state);
263
264 drm_atomic_helper_commit_hw_done(old_state);
265 drm_atomic_helper_wait_for_flip_done(dev, old_state);
266
267 drm_atomic_helper_cleanup_planes(dev, old_state);
268}
269
270
271
272
273
274static const struct drm_mode_config_helper_funcs rcar_du_mode_config_helper = {
275 .atomic_commit_tail = rcar_du_atomic_commit_tail,
276};
277
278static const struct drm_mode_config_funcs rcar_du_mode_config_funcs = {
279 .fb_create = rcar_du_fb_create,
280 .output_poll_changed = rcar_du_output_poll_changed,
281 .atomic_check = rcar_du_atomic_check,
282 .atomic_commit = drm_atomic_helper_commit,
283};
284
285static int rcar_du_encoders_init_one(struct rcar_du_device *rcdu,
286 enum rcar_du_output output,
287 struct of_endpoint *ep)
288{
289 struct device_node *connector = NULL;
290 struct device_node *encoder = NULL;
291 struct device_node *ep_node = NULL;
292 struct device_node *entity_ep_node;
293 struct device_node *entity;
294 int ret;
295
296
297
298
299
300 entity = of_graph_get_remote_port_parent(ep->local_node);
301 if (!entity) {
302 dev_dbg(rcdu->dev, "unconnected endpoint %pOF, skipping\n",
303 ep->local_node);
304 return -ENODEV;
305 }
306
307 if (!of_device_is_available(entity)) {
308 dev_dbg(rcdu->dev,
309 "connected entity %pOF is disabled, skipping\n",
310 entity);
311 return -ENODEV;
312 }
313
314 entity_ep_node = of_graph_get_remote_endpoint(ep->local_node);
315
316 for_each_endpoint_of_node(entity, ep_node) {
317 if (ep_node == entity_ep_node)
318 continue;
319
320
321
322
323
324 encoder = entity;
325 connector = of_graph_get_remote_port_parent(ep_node);
326 of_node_put(ep_node);
327
328 if (!connector) {
329 dev_warn(rcdu->dev,
330 "no connector for encoder %pOF, skipping\n",
331 encoder);
332 of_node_put(entity_ep_node);
333 of_node_put(encoder);
334 return -ENODEV;
335 }
336
337 break;
338 }
339
340 of_node_put(entity_ep_node);
341
342 if (!encoder) {
343 dev_warn(rcdu->dev,
344 "no encoder found for endpoint %pOF, skipping\n",
345 ep->local_node);
346 return -ENODEV;
347 }
348
349 ret = rcar_du_encoder_init(rcdu, output, encoder, connector);
350 if (ret && ret != -EPROBE_DEFER)
351 dev_warn(rcdu->dev,
352 "failed to initialize encoder %pOF on output %u (%d), skipping\n",
353 encoder, output, ret);
354
355 of_node_put(encoder);
356 of_node_put(connector);
357
358 return ret;
359}
360
361static int rcar_du_encoders_init(struct rcar_du_device *rcdu)
362{
363 struct device_node *np = rcdu->dev->of_node;
364 struct device_node *ep_node;
365 unsigned int num_encoders = 0;
366
367
368
369
370
371 for_each_endpoint_of_node(np, ep_node) {
372 enum rcar_du_output output;
373 struct of_endpoint ep;
374 unsigned int i;
375 int ret;
376
377 ret = of_graph_parse_endpoint(ep_node, &ep);
378 if (ret < 0) {
379 of_node_put(ep_node);
380 return ret;
381 }
382
383
384 for (i = 0; i < RCAR_DU_OUTPUT_MAX; ++i) {
385 if (rcdu->info->routes[i].possible_crtcs &&
386 rcdu->info->routes[i].port == ep.port) {
387 output = i;
388 break;
389 }
390 }
391
392 if (i == RCAR_DU_OUTPUT_MAX) {
393 dev_warn(rcdu->dev,
394 "port %u references unexisting output, skipping\n",
395 ep.port);
396 continue;
397 }
398
399
400 ret = rcar_du_encoders_init_one(rcdu, output, &ep);
401 if (ret < 0) {
402 if (ret == -EPROBE_DEFER) {
403 of_node_put(ep_node);
404 return ret;
405 }
406
407 continue;
408 }
409
410 num_encoders++;
411 }
412
413 return num_encoders;
414}
415
416static int rcar_du_properties_init(struct rcar_du_device *rcdu)
417{
418 rcdu->props.alpha =
419 drm_property_create_range(rcdu->ddev, 0, "alpha", 0, 255);
420 if (rcdu->props.alpha == NULL)
421 return -ENOMEM;
422
423
424
425
426
427
428 rcdu->props.colorkey =
429 drm_property_create_range(rcdu->ddev, 0, "colorkey",
430 0, 0x01ffffff);
431 if (rcdu->props.colorkey == NULL)
432 return -ENOMEM;
433
434 return 0;
435}
436
437static int rcar_du_vsps_init(struct rcar_du_device *rcdu)
438{
439 const struct device_node *np = rcdu->dev->of_node;
440 struct of_phandle_args args;
441 struct {
442 struct device_node *np;
443 unsigned int crtcs_mask;
444 } vsps[RCAR_DU_MAX_VSPS] = { { 0, }, };
445 unsigned int vsps_count = 0;
446 unsigned int cells;
447 unsigned int i;
448 int ret;
449
450
451
452
453
454
455 cells = of_property_count_u32_elems(np, "vsps") / rcdu->num_crtcs - 1;
456 if (cells > 1)
457 return -EINVAL;
458
459 for (i = 0; i < rcdu->num_crtcs; ++i) {
460 unsigned int j;
461
462 ret = of_parse_phandle_with_fixed_args(np, "vsps", cells, i,
463 &args);
464 if (ret < 0)
465 goto error;
466
467
468
469
470
471 for (j = 0; j < vsps_count; ++j) {
472 if (vsps[j].np == args.np)
473 break;
474 }
475
476 if (j < vsps_count)
477 of_node_put(args.np);
478 else
479 vsps[vsps_count++].np = args.np;
480
481 vsps[j].crtcs_mask |= BIT(i);
482
483
484 rcdu->crtcs[i].vsp = &rcdu->vsps[j];
485 rcdu->crtcs[i].vsp_pipe = cells >= 1 ? args.args[0] : 0;
486 }
487
488
489
490
491
492 for (i = 0; i < vsps_count; ++i) {
493 struct rcar_du_vsp *vsp = &rcdu->vsps[i];
494
495 vsp->index = i;
496 vsp->dev = rcdu;
497
498 ret = rcar_du_vsp_init(vsp, vsps[i].np, vsps[i].crtcs_mask);
499 if (ret < 0)
500 goto error;
501 }
502
503 return 0;
504
505error:
506 for (i = 0; i < ARRAY_SIZE(vsps); ++i)
507 of_node_put(vsps[i].np);
508
509 return ret;
510}
511
512int rcar_du_modeset_init(struct rcar_du_device *rcdu)
513{
514 static const unsigned int mmio_offsets[] = {
515 DU0_REG_OFFSET, DU2_REG_OFFSET
516 };
517
518 struct drm_device *dev = rcdu->ddev;
519 struct drm_encoder *encoder;
520 struct drm_fbdev_cma *fbdev;
521 unsigned int num_encoders;
522 unsigned int num_groups;
523 unsigned int i;
524 int ret;
525
526 drm_mode_config_init(dev);
527
528 dev->mode_config.min_width = 0;
529 dev->mode_config.min_height = 0;
530 dev->mode_config.max_width = 4095;
531 dev->mode_config.max_height = 2047;
532 dev->mode_config.funcs = &rcar_du_mode_config_funcs;
533 dev->mode_config.helper_private = &rcar_du_mode_config_helper;
534
535 rcdu->num_crtcs = rcdu->info->num_crtcs;
536
537 ret = rcar_du_properties_init(rcdu);
538 if (ret < 0)
539 return ret;
540
541
542
543
544
545 ret = drm_vblank_init(dev, (1 << rcdu->info->num_crtcs) - 1);
546 if (ret < 0)
547 return ret;
548
549
550 num_groups = DIV_ROUND_UP(rcdu->num_crtcs, 2);
551
552 for (i = 0; i < num_groups; ++i) {
553 struct rcar_du_group *rgrp = &rcdu->groups[i];
554
555 mutex_init(&rgrp->lock);
556
557 rgrp->dev = rcdu;
558 rgrp->mmio_offset = mmio_offsets[i];
559 rgrp->index = i;
560 rgrp->num_crtcs = min(rcdu->num_crtcs - 2 * i, 2U);
561
562
563
564
565
566
567
568 rgrp->dptsr_planes = rgrp->num_crtcs > 1
569 ? (rcdu->info->gen >= 3 ? 0x04 : 0xf0)
570 : 0;
571
572 if (!rcar_du_has(rcdu, RCAR_DU_FEATURE_VSP1_SOURCE)) {
573 ret = rcar_du_planes_init(rgrp);
574 if (ret < 0)
575 return ret;
576 }
577 }
578
579
580 if (rcar_du_has(rcdu, RCAR_DU_FEATURE_VSP1_SOURCE)) {
581 ret = rcar_du_vsps_init(rcdu);
582 if (ret < 0)
583 return ret;
584 }
585
586
587 for (i = 0; i < rcdu->num_crtcs; ++i) {
588 struct rcar_du_group *rgrp = &rcdu->groups[i / 2];
589
590 ret = rcar_du_crtc_create(rgrp, i);
591 if (ret < 0)
592 return ret;
593 }
594
595
596 ret = rcar_du_encoders_init(rcdu);
597 if (ret < 0)
598 return ret;
599
600 if (ret == 0) {
601 dev_err(rcdu->dev, "error: no encoder could be initialized\n");
602 return -EINVAL;
603 }
604
605 num_encoders = ret;
606
607
608
609
610
611
612 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
613 struct rcar_du_encoder *renc = to_rcar_encoder(encoder);
614 const struct rcar_du_output_routing *route =
615 &rcdu->info->routes[renc->output];
616
617 encoder->possible_crtcs = route->possible_crtcs;
618 encoder->possible_clones = (1 << num_encoders) - 1;
619 }
620
621 drm_mode_config_reset(dev);
622
623 drm_kms_helper_poll_init(dev);
624
625 if (dev->mode_config.num_connector) {
626 fbdev = drm_fbdev_cma_init(dev, 32,
627 dev->mode_config.num_connector);
628 if (IS_ERR(fbdev))
629 return PTR_ERR(fbdev);
630
631 rcdu->fbdev = fbdev;
632 } else {
633 dev_info(rcdu->dev,
634 "no connector found, disabling fbdev emulation\n");
635 }
636
637 return 0;
638}
639