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1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * Copyright (c) 2015 MediaTek Inc.
4 */
5
6#include <linux/clk.h>
7#include <linux/dma-mapping.h>
8#include <linux/mailbox_controller.h>
9#include <linux/of.h>
10#include <linux/pm_runtime.h>
11#include <linux/soc/mediatek/mtk-cmdq.h>
12#include <linux/soc/mediatek/mtk-mmsys.h>
13#include <linux/soc/mediatek/mtk-mutex.h>
14
15#include <asm/barrier.h>
16
17#include <drm/drm_atomic.h>
18#include <drm/drm_atomic_helper.h>
19#include <drm/drm_probe_helper.h>
20#include <drm/drm_vblank.h>
21
22#include "mtk_drm_drv.h"
23#include "mtk_drm_crtc.h"
24#include "mtk_drm_ddp_comp.h"
25#include "mtk_drm_gem.h"
26#include "mtk_drm_plane.h"
27
28/*
29 * struct mtk_drm_crtc - MediaTek specific crtc structure.
30 * @base: crtc object.
31 * @enabled: records whether crtc_enable succeeded
32 * @planes: array of 4 drm_plane structures, one for each overlay plane
33 * @pending_planes: whether any plane has pending changes to be applied
34 * @mmsys_dev: pointer to the mmsys device for configuration registers
35 * @mutex: handle to one of the ten disp_mutex streams
36 * @ddp_comp_nr: number of components in ddp_comp
37 * @ddp_comp: array of pointers the mtk_ddp_comp structures used by this crtc
38 *
39 * TODO: Needs update: this header is missing a bunch of member descriptions.
40 */
41struct mtk_drm_crtc {
42 struct drm_crtc base;
43 bool enabled;
44
45 bool pending_needs_vblank;
46 struct drm_pending_vblank_event *event;
47
48 struct drm_plane *planes;
49 unsigned int layer_nr;
50 bool pending_planes;
51 bool pending_async_planes;
52
53#if IS_REACHABLE(CONFIG_MTK_CMDQ)
54 struct cmdq_client cmdq_client;
55 struct cmdq_pkt cmdq_handle;
56 u32 cmdq_event;
57 u32 cmdq_vblank_cnt;
58 wait_queue_head_t cb_blocking_queue;
59#endif
60
61 struct device *mmsys_dev;
62 struct device *dma_dev;
63 struct mtk_mutex *mutex;
64 unsigned int ddp_comp_nr;
65 struct mtk_ddp_comp **ddp_comp;
66 unsigned int num_conn_routes;
67 const struct mtk_drm_route *conn_routes;
68
69 /* lock for display hardware access */
70 struct mutex hw_lock;
71 bool config_updating;
72};
73
74struct mtk_crtc_state {
75 struct drm_crtc_state base;
76
77 bool pending_config;
78 unsigned int pending_width;
79 unsigned int pending_height;
80 unsigned int pending_vrefresh;
81};
82
83static inline struct mtk_drm_crtc *to_mtk_crtc(struct drm_crtc *c)
84{
85 return container_of(c, struct mtk_drm_crtc, base);
86}
87
88static inline struct mtk_crtc_state *to_mtk_crtc_state(struct drm_crtc_state *s)
89{
90 return container_of(s, struct mtk_crtc_state, base);
91}
92
93static void mtk_drm_crtc_finish_page_flip(struct mtk_drm_crtc *mtk_crtc)
94{
95 struct drm_crtc *crtc = &mtk_crtc->base;
96 unsigned long flags;
97
98 spin_lock_irqsave(&crtc->dev->event_lock, flags);
99 drm_crtc_send_vblank_event(crtc, mtk_crtc->event);
100 drm_crtc_vblank_put(crtc);
101 mtk_crtc->event = NULL;
102 spin_unlock_irqrestore(&crtc->dev->event_lock, flags);
103}
104
105static void mtk_drm_finish_page_flip(struct mtk_drm_crtc *mtk_crtc)
106{
107 drm_crtc_handle_vblank(&mtk_crtc->base);
108 if (!mtk_crtc->config_updating && mtk_crtc->pending_needs_vblank) {
109 mtk_drm_crtc_finish_page_flip(mtk_crtc);
110 mtk_crtc->pending_needs_vblank = false;
111 }
112}
113
114#if IS_REACHABLE(CONFIG_MTK_CMDQ)
115static int mtk_drm_cmdq_pkt_create(struct cmdq_client *client, struct cmdq_pkt *pkt,
116 size_t size)
117{
118 struct device *dev;
119 dma_addr_t dma_addr;
120
121 pkt->va_base = kzalloc(size, GFP_KERNEL);
122 if (!pkt->va_base)
123 return -ENOMEM;
124
125 pkt->buf_size = size;
126 pkt->cl = (void *)client;
127
128 dev = client->chan->mbox->dev;
129 dma_addr = dma_map_single(dev, pkt->va_base, pkt->buf_size,
130 DMA_TO_DEVICE);
131 if (dma_mapping_error(dev, dma_addr)) {
132 dev_err(dev, "dma map failed, size=%u\n", (u32)(u64)size);
133 kfree(pkt->va_base);
134 return -ENOMEM;
135 }
136
137 pkt->pa_base = dma_addr;
138
139 return 0;
140}
141
142static void mtk_drm_cmdq_pkt_destroy(struct cmdq_pkt *pkt)
143{
144 struct cmdq_client *client = (struct cmdq_client *)pkt->cl;
145
146 dma_unmap_single(client->chan->mbox->dev, pkt->pa_base, pkt->buf_size,
147 DMA_TO_DEVICE);
148 kfree(pkt->va_base);
149}
150#endif
151
152static void mtk_drm_crtc_destroy(struct drm_crtc *crtc)
153{
154 struct mtk_drm_crtc *mtk_crtc = to_mtk_crtc(crtc);
155 int i;
156
157 mtk_mutex_put(mtk_crtc->mutex);
158#if IS_REACHABLE(CONFIG_MTK_CMDQ)
159 mtk_drm_cmdq_pkt_destroy(&mtk_crtc->cmdq_handle);
160
161 if (mtk_crtc->cmdq_client.chan) {
162 mbox_free_channel(mtk_crtc->cmdq_client.chan);
163 mtk_crtc->cmdq_client.chan = NULL;
164 }
165#endif
166
167 for (i = 0; i < mtk_crtc->ddp_comp_nr; i++) {
168 struct mtk_ddp_comp *comp;
169
170 comp = mtk_crtc->ddp_comp[i];
171 mtk_ddp_comp_unregister_vblank_cb(comp);
172 }
173
174 drm_crtc_cleanup(crtc);
175}
176
177static void mtk_drm_crtc_reset(struct drm_crtc *crtc)
178{
179 struct mtk_crtc_state *state;
180
181 if (crtc->state)
182 __drm_atomic_helper_crtc_destroy_state(crtc->state);
183
184 kfree(to_mtk_crtc_state(crtc->state));
185 crtc->state = NULL;
186
187 state = kzalloc(sizeof(*state), GFP_KERNEL);
188 if (state)
189 __drm_atomic_helper_crtc_reset(crtc, &state->base);
190}
191
192static struct drm_crtc_state *mtk_drm_crtc_duplicate_state(struct drm_crtc *crtc)
193{
194 struct mtk_crtc_state *state;
195
196 state = kmalloc(sizeof(*state), GFP_KERNEL);
197 if (!state)
198 return NULL;
199
200 __drm_atomic_helper_crtc_duplicate_state(crtc, &state->base);
201
202 WARN_ON(state->base.crtc != crtc);
203 state->base.crtc = crtc;
204 state->pending_config = false;
205
206 return &state->base;
207}
208
209static void mtk_drm_crtc_destroy_state(struct drm_crtc *crtc,
210 struct drm_crtc_state *state)
211{
212 __drm_atomic_helper_crtc_destroy_state(state);
213 kfree(to_mtk_crtc_state(state));
214}
215
216static bool mtk_drm_crtc_mode_fixup(struct drm_crtc *crtc,
217 const struct drm_display_mode *mode,
218 struct drm_display_mode *adjusted_mode)
219{
220 /* Nothing to do here, but this callback is mandatory. */
221 return true;
222}
223
224static void mtk_drm_crtc_mode_set_nofb(struct drm_crtc *crtc)
225{
226 struct mtk_crtc_state *state = to_mtk_crtc_state(crtc->state);
227
228 state->pending_width = crtc->mode.hdisplay;
229 state->pending_height = crtc->mode.vdisplay;
230 state->pending_vrefresh = drm_mode_vrefresh(&crtc->mode);
231 wmb(); /* Make sure the above parameters are set before update */
232 state->pending_config = true;
233}
234
235static int mtk_crtc_ddp_clk_enable(struct mtk_drm_crtc *mtk_crtc)
236{
237 int ret;
238 int i;
239
240 for (i = 0; i < mtk_crtc->ddp_comp_nr; i++) {
241 ret = mtk_ddp_comp_clk_enable(mtk_crtc->ddp_comp[i]);
242 if (ret) {
243 DRM_ERROR("Failed to enable clock %d: %d\n", i, ret);
244 goto err;
245 }
246 }
247
248 return 0;
249err:
250 while (--i >= 0)
251 mtk_ddp_comp_clk_disable(mtk_crtc->ddp_comp[i]);
252 return ret;
253}
254
255static void mtk_crtc_ddp_clk_disable(struct mtk_drm_crtc *mtk_crtc)
256{
257 int i;
258
259 for (i = 0; i < mtk_crtc->ddp_comp_nr; i++)
260 mtk_ddp_comp_clk_disable(mtk_crtc->ddp_comp[i]);
261}
262
263static
264struct mtk_ddp_comp *mtk_drm_ddp_comp_for_plane(struct drm_crtc *crtc,
265 struct drm_plane *plane,
266 unsigned int *local_layer)
267{
268 struct mtk_drm_crtc *mtk_crtc = to_mtk_crtc(crtc);
269 struct mtk_ddp_comp *comp;
270 int i, count = 0;
271 unsigned int local_index = plane - mtk_crtc->planes;
272
273 for (i = 0; i < mtk_crtc->ddp_comp_nr; i++) {
274 comp = mtk_crtc->ddp_comp[i];
275 if (local_index < (count + mtk_ddp_comp_layer_nr(comp))) {
276 *local_layer = local_index - count;
277 return comp;
278 }
279 count += mtk_ddp_comp_layer_nr(comp);
280 }
281
282 WARN(1, "Failed to find component for plane %d\n", plane->index);
283 return NULL;
284}
285
286#if IS_REACHABLE(CONFIG_MTK_CMDQ)
287static void ddp_cmdq_cb(struct mbox_client *cl, void *mssg)
288{
289 struct cmdq_cb_data *data = mssg;
290 struct cmdq_client *cmdq_cl = container_of(cl, struct cmdq_client, client);
291 struct mtk_drm_crtc *mtk_crtc = container_of(cmdq_cl, struct mtk_drm_crtc, cmdq_client);
292 struct mtk_crtc_state *state;
293 unsigned int i;
294
295 if (data->sta < 0)
296 return;
297
298 state = to_mtk_crtc_state(mtk_crtc->base.state);
299
300 state->pending_config = false;
301
302 if (mtk_crtc->pending_planes) {
303 for (i = 0; i < mtk_crtc->layer_nr; i++) {
304 struct drm_plane *plane = &mtk_crtc->planes[i];
305 struct mtk_plane_state *plane_state;
306
307 plane_state = to_mtk_plane_state(plane->state);
308
309 plane_state->pending.config = false;
310 }
311 mtk_crtc->pending_planes = false;
312 }
313
314 if (mtk_crtc->pending_async_planes) {
315 for (i = 0; i < mtk_crtc->layer_nr; i++) {
316 struct drm_plane *plane = &mtk_crtc->planes[i];
317 struct mtk_plane_state *plane_state;
318
319 plane_state = to_mtk_plane_state(plane->state);
320
321 plane_state->pending.async_config = false;
322 }
323 mtk_crtc->pending_async_planes = false;
324 }
325
326 mtk_crtc->cmdq_vblank_cnt = 0;
327 wake_up(&mtk_crtc->cb_blocking_queue);
328}
329#endif
330
331static int mtk_crtc_ddp_hw_init(struct mtk_drm_crtc *mtk_crtc)
332{
333 struct drm_crtc *crtc = &mtk_crtc->base;
334 struct drm_connector *connector;
335 struct drm_encoder *encoder;
336 struct drm_connector_list_iter conn_iter;
337 unsigned int width, height, vrefresh, bpc = MTK_MAX_BPC;
338 int ret;
339 int i;
340
341 if (WARN_ON(!crtc->state))
342 return -EINVAL;
343
344 width = crtc->state->adjusted_mode.hdisplay;
345 height = crtc->state->adjusted_mode.vdisplay;
346 vrefresh = drm_mode_vrefresh(&crtc->state->adjusted_mode);
347
348 drm_for_each_encoder(encoder, crtc->dev) {
349 if (encoder->crtc != crtc)
350 continue;
351
352 drm_connector_list_iter_begin(crtc->dev, &conn_iter);
353 drm_for_each_connector_iter(connector, &conn_iter) {
354 if (connector->encoder != encoder)
355 continue;
356 if (connector->display_info.bpc != 0 &&
357 bpc > connector->display_info.bpc)
358 bpc = connector->display_info.bpc;
359 }
360 drm_connector_list_iter_end(&conn_iter);
361 }
362
363 ret = pm_runtime_resume_and_get(crtc->dev->dev);
364 if (ret < 0) {
365 DRM_ERROR("Failed to enable power domain: %d\n", ret);
366 return ret;
367 }
368
369 ret = mtk_mutex_prepare(mtk_crtc->mutex);
370 if (ret < 0) {
371 DRM_ERROR("Failed to enable mutex clock: %d\n", ret);
372 goto err_pm_runtime_put;
373 }
374
375 ret = mtk_crtc_ddp_clk_enable(mtk_crtc);
376 if (ret < 0) {
377 DRM_ERROR("Failed to enable component clocks: %d\n", ret);
378 goto err_mutex_unprepare;
379 }
380
381 for (i = 0; i < mtk_crtc->ddp_comp_nr - 1; i++) {
382 if (!mtk_ddp_comp_connect(mtk_crtc->ddp_comp[i], mtk_crtc->mmsys_dev,
383 mtk_crtc->ddp_comp[i + 1]->id))
384 mtk_mmsys_ddp_connect(mtk_crtc->mmsys_dev,
385 mtk_crtc->ddp_comp[i]->id,
386 mtk_crtc->ddp_comp[i + 1]->id);
387 if (!mtk_ddp_comp_add(mtk_crtc->ddp_comp[i], mtk_crtc->mutex))
388 mtk_mutex_add_comp(mtk_crtc->mutex,
389 mtk_crtc->ddp_comp[i]->id);
390 }
391 if (!mtk_ddp_comp_add(mtk_crtc->ddp_comp[i], mtk_crtc->mutex))
392 mtk_mutex_add_comp(mtk_crtc->mutex, mtk_crtc->ddp_comp[i]->id);
393 mtk_mutex_enable(mtk_crtc->mutex);
394
395 for (i = 0; i < mtk_crtc->ddp_comp_nr; i++) {
396 struct mtk_ddp_comp *comp = mtk_crtc->ddp_comp[i];
397
398 if (i == 1)
399 mtk_ddp_comp_bgclr_in_on(comp);
400
401 mtk_ddp_comp_config(comp, width, height, vrefresh, bpc, NULL);
402 mtk_ddp_comp_start(comp);
403 }
404
405 /* Initially configure all planes */
406 for (i = 0; i < mtk_crtc->layer_nr; i++) {
407 struct drm_plane *plane = &mtk_crtc->planes[i];
408 struct mtk_plane_state *plane_state;
409 struct mtk_ddp_comp *comp;
410 unsigned int local_layer;
411
412 plane_state = to_mtk_plane_state(plane->state);
413
414 /* should not enable layer before crtc enabled */
415 plane_state->pending.enable = false;
416 comp = mtk_drm_ddp_comp_for_plane(crtc, plane, &local_layer);
417 if (comp)
418 mtk_ddp_comp_layer_config(comp, local_layer,
419 plane_state, NULL);
420 }
421
422 return 0;
423
424err_mutex_unprepare:
425 mtk_mutex_unprepare(mtk_crtc->mutex);
426err_pm_runtime_put:
427 pm_runtime_put(crtc->dev->dev);
428 return ret;
429}
430
431static void mtk_crtc_ddp_hw_fini(struct mtk_drm_crtc *mtk_crtc)
432{
433 struct drm_device *drm = mtk_crtc->base.dev;
434 struct drm_crtc *crtc = &mtk_crtc->base;
435 int i;
436
437 for (i = 0; i < mtk_crtc->ddp_comp_nr; i++) {
438 mtk_ddp_comp_stop(mtk_crtc->ddp_comp[i]);
439 if (i == 1)
440 mtk_ddp_comp_bgclr_in_off(mtk_crtc->ddp_comp[i]);
441 }
442
443 for (i = 0; i < mtk_crtc->ddp_comp_nr; i++)
444 if (!mtk_ddp_comp_remove(mtk_crtc->ddp_comp[i], mtk_crtc->mutex))
445 mtk_mutex_remove_comp(mtk_crtc->mutex,
446 mtk_crtc->ddp_comp[i]->id);
447 mtk_mutex_disable(mtk_crtc->mutex);
448 for (i = 0; i < mtk_crtc->ddp_comp_nr - 1; i++) {
449 if (!mtk_ddp_comp_disconnect(mtk_crtc->ddp_comp[i], mtk_crtc->mmsys_dev,
450 mtk_crtc->ddp_comp[i + 1]->id))
451 mtk_mmsys_ddp_disconnect(mtk_crtc->mmsys_dev,
452 mtk_crtc->ddp_comp[i]->id,
453 mtk_crtc->ddp_comp[i + 1]->id);
454 if (!mtk_ddp_comp_remove(mtk_crtc->ddp_comp[i], mtk_crtc->mutex))
455 mtk_mutex_remove_comp(mtk_crtc->mutex,
456 mtk_crtc->ddp_comp[i]->id);
457 }
458 if (!mtk_ddp_comp_remove(mtk_crtc->ddp_comp[i], mtk_crtc->mutex))
459 mtk_mutex_remove_comp(mtk_crtc->mutex, mtk_crtc->ddp_comp[i]->id);
460 mtk_crtc_ddp_clk_disable(mtk_crtc);
461 mtk_mutex_unprepare(mtk_crtc->mutex);
462
463 pm_runtime_put(drm->dev);
464
465 if (crtc->state->event && !crtc->state->active) {
466 spin_lock_irq(&crtc->dev->event_lock);
467 drm_crtc_send_vblank_event(crtc, crtc->state->event);
468 crtc->state->event = NULL;
469 spin_unlock_irq(&crtc->dev->event_lock);
470 }
471}
472
473static void mtk_crtc_ddp_config(struct drm_crtc *crtc,
474 struct cmdq_pkt *cmdq_handle)
475{
476 struct mtk_drm_crtc *mtk_crtc = to_mtk_crtc(crtc);
477 struct mtk_crtc_state *state = to_mtk_crtc_state(mtk_crtc->base.state);
478 struct mtk_ddp_comp *comp = mtk_crtc->ddp_comp[0];
479 unsigned int i;
480 unsigned int local_layer;
481
482 /*
483 * TODO: instead of updating the registers here, we should prepare
484 * working registers in atomic_commit and let the hardware command
485 * queue update module registers on vblank.
486 */
487 if (state->pending_config) {
488 mtk_ddp_comp_config(comp, state->pending_width,
489 state->pending_height,
490 state->pending_vrefresh, 0,
491 cmdq_handle);
492
493 if (!cmdq_handle)
494 state->pending_config = false;
495 }
496
497 if (mtk_crtc->pending_planes) {
498 for (i = 0; i < mtk_crtc->layer_nr; i++) {
499 struct drm_plane *plane = &mtk_crtc->planes[i];
500 struct mtk_plane_state *plane_state;
501
502 plane_state = to_mtk_plane_state(plane->state);
503
504 if (!plane_state->pending.config)
505 continue;
506
507 comp = mtk_drm_ddp_comp_for_plane(crtc, plane,
508 &local_layer);
509
510 if (comp)
511 mtk_ddp_comp_layer_config(comp, local_layer,
512 plane_state,
513 cmdq_handle);
514 if (!cmdq_handle)
515 plane_state->pending.config = false;
516 }
517
518 if (!cmdq_handle)
519 mtk_crtc->pending_planes = false;
520 }
521
522 if (mtk_crtc->pending_async_planes) {
523 for (i = 0; i < mtk_crtc->layer_nr; i++) {
524 struct drm_plane *plane = &mtk_crtc->planes[i];
525 struct mtk_plane_state *plane_state;
526
527 plane_state = to_mtk_plane_state(plane->state);
528
529 if (!plane_state->pending.async_config)
530 continue;
531
532 comp = mtk_drm_ddp_comp_for_plane(crtc, plane,
533 &local_layer);
534
535 if (comp)
536 mtk_ddp_comp_layer_config(comp, local_layer,
537 plane_state,
538 cmdq_handle);
539 if (!cmdq_handle)
540 plane_state->pending.async_config = false;
541 }
542
543 if (!cmdq_handle)
544 mtk_crtc->pending_async_planes = false;
545 }
546}
547
548static void mtk_drm_crtc_update_config(struct mtk_drm_crtc *mtk_crtc,
549 bool needs_vblank)
550{
551#if IS_REACHABLE(CONFIG_MTK_CMDQ)
552 struct cmdq_pkt *cmdq_handle = &mtk_crtc->cmdq_handle;
553#endif
554 struct drm_crtc *crtc = &mtk_crtc->base;
555 struct mtk_drm_private *priv = crtc->dev->dev_private;
556 unsigned int pending_planes = 0, pending_async_planes = 0;
557 int i;
558
559 mutex_lock(&mtk_crtc->hw_lock);
560 mtk_crtc->config_updating = true;
561 if (needs_vblank)
562 mtk_crtc->pending_needs_vblank = true;
563
564 for (i = 0; i < mtk_crtc->layer_nr; i++) {
565 struct drm_plane *plane = &mtk_crtc->planes[i];
566 struct mtk_plane_state *plane_state;
567
568 plane_state = to_mtk_plane_state(plane->state);
569 if (plane_state->pending.dirty) {
570 plane_state->pending.config = true;
571 plane_state->pending.dirty = false;
572 pending_planes |= BIT(i);
573 } else if (plane_state->pending.async_dirty) {
574 plane_state->pending.async_config = true;
575 plane_state->pending.async_dirty = false;
576 pending_async_planes |= BIT(i);
577 }
578 }
579 if (pending_planes)
580 mtk_crtc->pending_planes = true;
581 if (pending_async_planes)
582 mtk_crtc->pending_async_planes = true;
583
584 if (priv->data->shadow_register) {
585 mtk_mutex_acquire(mtk_crtc->mutex);
586 mtk_crtc_ddp_config(crtc, NULL);
587 mtk_mutex_release(mtk_crtc->mutex);
588 }
589#if IS_REACHABLE(CONFIG_MTK_CMDQ)
590 if (mtk_crtc->cmdq_client.chan) {
591 mbox_flush(mtk_crtc->cmdq_client.chan, 2000);
592 cmdq_handle->cmd_buf_size = 0;
593 cmdq_pkt_clear_event(cmdq_handle, mtk_crtc->cmdq_event);
594 cmdq_pkt_wfe(cmdq_handle, mtk_crtc->cmdq_event, false);
595 mtk_crtc_ddp_config(crtc, cmdq_handle);
596 cmdq_pkt_finalize(cmdq_handle);
597 dma_sync_single_for_device(mtk_crtc->cmdq_client.chan->mbox->dev,
598 cmdq_handle->pa_base,
599 cmdq_handle->cmd_buf_size,
600 DMA_TO_DEVICE);
601 /*
602 * CMDQ command should execute in next 3 vblank.
603 * One vblank interrupt before send message (occasionally)
604 * and one vblank interrupt after cmdq done,
605 * so it's timeout after 3 vblank interrupt.
606 * If it fail to execute in next 3 vblank, timeout happen.
607 */
608 mtk_crtc->cmdq_vblank_cnt = 3;
609
610 mbox_send_message(mtk_crtc->cmdq_client.chan, cmdq_handle);
611 mbox_client_txdone(mtk_crtc->cmdq_client.chan, 0);
612 }
613#endif
614 mtk_crtc->config_updating = false;
615 mutex_unlock(&mtk_crtc->hw_lock);
616}
617
618static void mtk_crtc_ddp_irq(void *data)
619{
620 struct drm_crtc *crtc = data;
621 struct mtk_drm_crtc *mtk_crtc = to_mtk_crtc(crtc);
622 struct mtk_drm_private *priv = crtc->dev->dev_private;
623
624#if IS_REACHABLE(CONFIG_MTK_CMDQ)
625 if (!priv->data->shadow_register && !mtk_crtc->cmdq_client.chan)
626 mtk_crtc_ddp_config(crtc, NULL);
627 else if (mtk_crtc->cmdq_vblank_cnt > 0 && --mtk_crtc->cmdq_vblank_cnt == 0)
628 DRM_ERROR("mtk_crtc %d CMDQ execute command timeout!\n",
629 drm_crtc_index(&mtk_crtc->base));
630#else
631 if (!priv->data->shadow_register)
632 mtk_crtc_ddp_config(crtc, NULL);
633#endif
634 mtk_drm_finish_page_flip(mtk_crtc);
635}
636
637static int mtk_drm_crtc_enable_vblank(struct drm_crtc *crtc)
638{
639 struct mtk_drm_crtc *mtk_crtc = to_mtk_crtc(crtc);
640 struct mtk_ddp_comp *comp = mtk_crtc->ddp_comp[0];
641
642 mtk_ddp_comp_enable_vblank(comp);
643
644 return 0;
645}
646
647static void mtk_drm_crtc_disable_vblank(struct drm_crtc *crtc)
648{
649 struct mtk_drm_crtc *mtk_crtc = to_mtk_crtc(crtc);
650 struct mtk_ddp_comp *comp = mtk_crtc->ddp_comp[0];
651
652 mtk_ddp_comp_disable_vblank(comp);
653}
654
655static void mtk_drm_crtc_update_output(struct drm_crtc *crtc,
656 struct drm_atomic_state *state)
657{
658 int crtc_index = drm_crtc_index(crtc);
659 int i;
660 struct device *dev;
661 struct drm_crtc_state *crtc_state = state->crtcs[crtc_index].new_state;
662 struct mtk_drm_crtc *mtk_crtc = to_mtk_crtc(crtc);
663 struct mtk_drm_private *priv;
664 unsigned int encoder_mask = crtc_state->encoder_mask;
665
666 if (!crtc_state->connectors_changed)
667 return;
668
669 if (!mtk_crtc->num_conn_routes)
670 return;
671
672 priv = ((struct mtk_drm_private *)crtc->dev->dev_private)->all_drm_private[crtc_index];
673 dev = priv->dev;
674
675 dev_dbg(dev, "connector change:%d, encoder mask:0x%x for crtc:%d\n",
676 crtc_state->connectors_changed, encoder_mask, crtc_index);
677
678 for (i = 0; i < mtk_crtc->num_conn_routes; i++) {
679 unsigned int comp_id = mtk_crtc->conn_routes[i].route_ddp;
680 struct mtk_ddp_comp *comp = &priv->ddp_comp[comp_id];
681
682 if (comp->encoder_index >= 0 &&
683 (encoder_mask & BIT(comp->encoder_index))) {
684 mtk_crtc->ddp_comp[mtk_crtc->ddp_comp_nr - 1] = comp;
685 dev_dbg(dev, "Add comp_id: %d at path index %d\n",
686 comp->id, mtk_crtc->ddp_comp_nr - 1);
687 break;
688 }
689 }
690}
691
692int mtk_drm_crtc_plane_check(struct drm_crtc *crtc, struct drm_plane *plane,
693 struct mtk_plane_state *state)
694{
695 unsigned int local_layer;
696 struct mtk_ddp_comp *comp;
697
698 comp = mtk_drm_ddp_comp_for_plane(crtc, plane, &local_layer);
699 if (comp)
700 return mtk_ddp_comp_layer_check(comp, local_layer, state);
701 return 0;
702}
703
704void mtk_drm_crtc_async_update(struct drm_crtc *crtc, struct drm_plane *plane,
705 struct drm_atomic_state *state)
706{
707 struct mtk_drm_crtc *mtk_crtc = to_mtk_crtc(crtc);
708
709 if (!mtk_crtc->enabled)
710 return;
711
712 mtk_drm_crtc_update_config(mtk_crtc, false);
713}
714
715static void mtk_drm_crtc_atomic_enable(struct drm_crtc *crtc,
716 struct drm_atomic_state *state)
717{
718 struct mtk_drm_crtc *mtk_crtc = to_mtk_crtc(crtc);
719 struct mtk_ddp_comp *comp = mtk_crtc->ddp_comp[0];
720 int ret;
721
722 DRM_DEBUG_DRIVER("%s %d\n", __func__, crtc->base.id);
723
724 ret = mtk_ddp_comp_power_on(comp);
725 if (ret < 0) {
726 DRM_DEV_ERROR(comp->dev, "Failed to enable power domain: %d\n", ret);
727 return;
728 }
729
730 mtk_drm_crtc_update_output(crtc, state);
731
732 ret = mtk_crtc_ddp_hw_init(mtk_crtc);
733 if (ret) {
734 mtk_ddp_comp_power_off(comp);
735 return;
736 }
737
738 drm_crtc_vblank_on(crtc);
739 mtk_crtc->enabled = true;
740}
741
742static void mtk_drm_crtc_atomic_disable(struct drm_crtc *crtc,
743 struct drm_atomic_state *state)
744{
745 struct mtk_drm_crtc *mtk_crtc = to_mtk_crtc(crtc);
746 struct mtk_ddp_comp *comp = mtk_crtc->ddp_comp[0];
747 int i;
748
749 DRM_DEBUG_DRIVER("%s %d\n", __func__, crtc->base.id);
750 if (!mtk_crtc->enabled)
751 return;
752
753 /* Set all pending plane state to disabled */
754 for (i = 0; i < mtk_crtc->layer_nr; i++) {
755 struct drm_plane *plane = &mtk_crtc->planes[i];
756 struct mtk_plane_state *plane_state;
757
758 plane_state = to_mtk_plane_state(plane->state);
759 plane_state->pending.enable = false;
760 plane_state->pending.config = true;
761 }
762 mtk_crtc->pending_planes = true;
763
764 mtk_drm_crtc_update_config(mtk_crtc, false);
765#if IS_REACHABLE(CONFIG_MTK_CMDQ)
766 /* Wait for planes to be disabled by cmdq */
767 if (mtk_crtc->cmdq_client.chan)
768 wait_event_timeout(mtk_crtc->cb_blocking_queue,
769 mtk_crtc->cmdq_vblank_cnt == 0,
770 msecs_to_jiffies(500));
771#endif
772 /* Wait for planes to be disabled */
773 drm_crtc_wait_one_vblank(crtc);
774
775 drm_crtc_vblank_off(crtc);
776 mtk_crtc_ddp_hw_fini(mtk_crtc);
777 mtk_ddp_comp_power_off(comp);
778
779 mtk_crtc->enabled = false;
780}
781
782static void mtk_drm_crtc_atomic_begin(struct drm_crtc *crtc,
783 struct drm_atomic_state *state)
784{
785 struct drm_crtc_state *crtc_state = drm_atomic_get_new_crtc_state(state,
786 crtc);
787 struct mtk_crtc_state *mtk_crtc_state = to_mtk_crtc_state(crtc_state);
788 struct mtk_drm_crtc *mtk_crtc = to_mtk_crtc(crtc);
789 unsigned long flags;
790
791 if (mtk_crtc->event && mtk_crtc_state->base.event)
792 DRM_ERROR("new event while there is still a pending event\n");
793
794 if (mtk_crtc_state->base.event) {
795 mtk_crtc_state->base.event->pipe = drm_crtc_index(crtc);
796 WARN_ON(drm_crtc_vblank_get(crtc) != 0);
797
798 spin_lock_irqsave(&crtc->dev->event_lock, flags);
799 mtk_crtc->event = mtk_crtc_state->base.event;
800 spin_unlock_irqrestore(&crtc->dev->event_lock, flags);
801
802 mtk_crtc_state->base.event = NULL;
803 }
804}
805
806static void mtk_drm_crtc_atomic_flush(struct drm_crtc *crtc,
807 struct drm_atomic_state *state)
808{
809 struct mtk_drm_crtc *mtk_crtc = to_mtk_crtc(crtc);
810 int i;
811
812 if (crtc->state->color_mgmt_changed)
813 for (i = 0; i < mtk_crtc->ddp_comp_nr; i++) {
814 mtk_ddp_gamma_set(mtk_crtc->ddp_comp[i], crtc->state);
815 mtk_ddp_ctm_set(mtk_crtc->ddp_comp[i], crtc->state);
816 }
817 mtk_drm_crtc_update_config(mtk_crtc, !!mtk_crtc->event);
818}
819
820static const struct drm_crtc_funcs mtk_crtc_funcs = {
821 .set_config = drm_atomic_helper_set_config,
822 .page_flip = drm_atomic_helper_page_flip,
823 .destroy = mtk_drm_crtc_destroy,
824 .reset = mtk_drm_crtc_reset,
825 .atomic_duplicate_state = mtk_drm_crtc_duplicate_state,
826 .atomic_destroy_state = mtk_drm_crtc_destroy_state,
827 .enable_vblank = mtk_drm_crtc_enable_vblank,
828 .disable_vblank = mtk_drm_crtc_disable_vblank,
829};
830
831static const struct drm_crtc_helper_funcs mtk_crtc_helper_funcs = {
832 .mode_fixup = mtk_drm_crtc_mode_fixup,
833 .mode_set_nofb = mtk_drm_crtc_mode_set_nofb,
834 .atomic_begin = mtk_drm_crtc_atomic_begin,
835 .atomic_flush = mtk_drm_crtc_atomic_flush,
836 .atomic_enable = mtk_drm_crtc_atomic_enable,
837 .atomic_disable = mtk_drm_crtc_atomic_disable,
838};
839
840static int mtk_drm_crtc_init(struct drm_device *drm,
841 struct mtk_drm_crtc *mtk_crtc,
842 unsigned int pipe)
843{
844 struct drm_plane *primary = NULL;
845 struct drm_plane *cursor = NULL;
846 int i, ret;
847
848 for (i = 0; i < mtk_crtc->layer_nr; i++) {
849 if (mtk_crtc->planes[i].type == DRM_PLANE_TYPE_PRIMARY)
850 primary = &mtk_crtc->planes[i];
851 else if (mtk_crtc->planes[i].type == DRM_PLANE_TYPE_CURSOR)
852 cursor = &mtk_crtc->planes[i];
853 }
854
855 ret = drm_crtc_init_with_planes(drm, &mtk_crtc->base, primary, cursor,
856 &mtk_crtc_funcs, NULL);
857 if (ret)
858 goto err_cleanup_crtc;
859
860 drm_crtc_helper_add(&mtk_crtc->base, &mtk_crtc_helper_funcs);
861
862 return 0;
863
864err_cleanup_crtc:
865 drm_crtc_cleanup(&mtk_crtc->base);
866 return ret;
867}
868
869static int mtk_drm_crtc_num_comp_planes(struct mtk_drm_crtc *mtk_crtc,
870 int comp_idx)
871{
872 struct mtk_ddp_comp *comp;
873
874 if (comp_idx > 1)
875 return 0;
876
877 comp = mtk_crtc->ddp_comp[comp_idx];
878 if (!comp->funcs)
879 return 0;
880
881 if (comp_idx == 1 && !comp->funcs->bgclr_in_on)
882 return 0;
883
884 return mtk_ddp_comp_layer_nr(comp);
885}
886
887static inline
888enum drm_plane_type mtk_drm_crtc_plane_type(unsigned int plane_idx,
889 unsigned int num_planes)
890{
891 if (plane_idx == 0)
892 return DRM_PLANE_TYPE_PRIMARY;
893 else if (plane_idx == (num_planes - 1))
894 return DRM_PLANE_TYPE_CURSOR;
895 else
896 return DRM_PLANE_TYPE_OVERLAY;
897
898}
899
900static int mtk_drm_crtc_init_comp_planes(struct drm_device *drm_dev,
901 struct mtk_drm_crtc *mtk_crtc,
902 int comp_idx, int pipe)
903{
904 int num_planes = mtk_drm_crtc_num_comp_planes(mtk_crtc, comp_idx);
905 struct mtk_ddp_comp *comp = mtk_crtc->ddp_comp[comp_idx];
906 int i, ret;
907
908 for (i = 0; i < num_planes; i++) {
909 ret = mtk_plane_init(drm_dev,
910 &mtk_crtc->planes[mtk_crtc->layer_nr],
911 BIT(pipe),
912 mtk_drm_crtc_plane_type(mtk_crtc->layer_nr,
913 num_planes),
914 mtk_ddp_comp_supported_rotations(comp),
915 mtk_ddp_comp_get_formats(comp),
916 mtk_ddp_comp_get_num_formats(comp));
917 if (ret)
918 return ret;
919
920 mtk_crtc->layer_nr++;
921 }
922 return 0;
923}
924
925struct device *mtk_drm_crtc_dma_dev_get(struct drm_crtc *crtc)
926{
927 struct mtk_drm_crtc *mtk_crtc = NULL;
928
929 if (!crtc)
930 return NULL;
931
932 mtk_crtc = to_mtk_crtc(crtc);
933 if (!mtk_crtc)
934 return NULL;
935
936 return mtk_crtc->dma_dev;
937}
938
939int mtk_drm_crtc_create(struct drm_device *drm_dev,
940 const unsigned int *path, unsigned int path_len,
941 int priv_data_index, const struct mtk_drm_route *conn_routes,
942 unsigned int num_conn_routes)
943{
944 struct mtk_drm_private *priv = drm_dev->dev_private;
945 struct device *dev = drm_dev->dev;
946 struct mtk_drm_crtc *mtk_crtc;
947 unsigned int num_comp_planes = 0;
948 int ret;
949 int i;
950 bool has_ctm = false;
951 uint gamma_lut_size = 0;
952 struct drm_crtc *tmp;
953 int crtc_i = 0;
954
955 if (!path)
956 return 0;
957
958 priv = priv->all_drm_private[priv_data_index];
959
960 drm_for_each_crtc(tmp, drm_dev)
961 crtc_i++;
962
963 for (i = 0; i < path_len; i++) {
964 enum mtk_ddp_comp_id comp_id = path[i];
965 struct device_node *node;
966 struct mtk_ddp_comp *comp;
967
968 node = priv->comp_node[comp_id];
969 comp = &priv->ddp_comp[comp_id];
970
971 /* Not all drm components have a DTS device node, such as ovl_adaptor,
972 * which is the drm bring up sub driver
973 */
974 if (!node && comp_id != DDP_COMPONENT_DRM_OVL_ADAPTOR) {
975 dev_info(dev,
976 "Not creating crtc %d because component %d is disabled or missing\n",
977 crtc_i, comp_id);
978 return 0;
979 }
980
981 if (!comp->dev) {
982 dev_err(dev, "Component %pOF not initialized\n", node);
983 return -ENODEV;
984 }
985 }
986
987 mtk_crtc = devm_kzalloc(dev, sizeof(*mtk_crtc), GFP_KERNEL);
988 if (!mtk_crtc)
989 return -ENOMEM;
990
991 mtk_crtc->mmsys_dev = priv->mmsys_dev;
992 mtk_crtc->ddp_comp_nr = path_len;
993 mtk_crtc->ddp_comp = devm_kmalloc_array(dev,
994 mtk_crtc->ddp_comp_nr + (conn_routes ? 1 : 0),
995 sizeof(*mtk_crtc->ddp_comp),
996 GFP_KERNEL);
997 if (!mtk_crtc->ddp_comp)
998 return -ENOMEM;
999
1000 mtk_crtc->mutex = mtk_mutex_get(priv->mutex_dev);
1001 if (IS_ERR(mtk_crtc->mutex)) {
1002 ret = PTR_ERR(mtk_crtc->mutex);
1003 dev_err(dev, "Failed to get mutex: %d\n", ret);
1004 return ret;
1005 }
1006
1007 for (i = 0; i < mtk_crtc->ddp_comp_nr; i++) {
1008 unsigned int comp_id = path[i];
1009 struct mtk_ddp_comp *comp;
1010
1011 comp = &priv->ddp_comp[comp_id];
1012 mtk_crtc->ddp_comp[i] = comp;
1013
1014 if (comp->funcs) {
1015 if (comp->funcs->gamma_set && comp->funcs->gamma_get_lut_size) {
1016 unsigned int lut_sz = mtk_ddp_gamma_get_lut_size(comp);
1017
1018 if (lut_sz)
1019 gamma_lut_size = lut_sz;
1020 }
1021
1022 if (comp->funcs->ctm_set)
1023 has_ctm = true;
1024 }
1025
1026 mtk_ddp_comp_register_vblank_cb(comp, mtk_crtc_ddp_irq,
1027 &mtk_crtc->base);
1028 }
1029
1030 for (i = 0; i < mtk_crtc->ddp_comp_nr; i++)
1031 num_comp_planes += mtk_drm_crtc_num_comp_planes(mtk_crtc, i);
1032
1033 mtk_crtc->planes = devm_kcalloc(dev, num_comp_planes,
1034 sizeof(struct drm_plane), GFP_KERNEL);
1035 if (!mtk_crtc->planes)
1036 return -ENOMEM;
1037
1038 for (i = 0; i < mtk_crtc->ddp_comp_nr; i++) {
1039 ret = mtk_drm_crtc_init_comp_planes(drm_dev, mtk_crtc, i,
1040 crtc_i);
1041 if (ret)
1042 return ret;
1043 }
1044
1045 /*
1046 * Default to use the first component as the dma dev.
1047 * In the case of ovl_adaptor sub driver, it needs to use the
1048 * dma_dev_get function to get representative dma dev.
1049 */
1050 mtk_crtc->dma_dev = mtk_ddp_comp_dma_dev_get(&priv->ddp_comp[path[0]]);
1051
1052 ret = mtk_drm_crtc_init(drm_dev, mtk_crtc, crtc_i);
1053 if (ret < 0)
1054 return ret;
1055
1056 if (gamma_lut_size)
1057 drm_mode_crtc_set_gamma_size(&mtk_crtc->base, gamma_lut_size);
1058 drm_crtc_enable_color_mgmt(&mtk_crtc->base, 0, has_ctm, gamma_lut_size);
1059 mutex_init(&mtk_crtc->hw_lock);
1060
1061#if IS_REACHABLE(CONFIG_MTK_CMDQ)
1062 i = priv->mbox_index++;
1063 mtk_crtc->cmdq_client.client.dev = mtk_crtc->mmsys_dev;
1064 mtk_crtc->cmdq_client.client.tx_block = false;
1065 mtk_crtc->cmdq_client.client.knows_txdone = true;
1066 mtk_crtc->cmdq_client.client.rx_callback = ddp_cmdq_cb;
1067 mtk_crtc->cmdq_client.chan =
1068 mbox_request_channel(&mtk_crtc->cmdq_client.client, i);
1069 if (IS_ERR(mtk_crtc->cmdq_client.chan)) {
1070 dev_dbg(dev, "mtk_crtc %d failed to create mailbox client, writing register by CPU now\n",
1071 drm_crtc_index(&mtk_crtc->base));
1072 mtk_crtc->cmdq_client.chan = NULL;
1073 }
1074
1075 if (mtk_crtc->cmdq_client.chan) {
1076 ret = of_property_read_u32_index(priv->mutex_node,
1077 "mediatek,gce-events",
1078 i,
1079 &mtk_crtc->cmdq_event);
1080 if (ret) {
1081 dev_dbg(dev, "mtk_crtc %d failed to get mediatek,gce-events property\n",
1082 drm_crtc_index(&mtk_crtc->base));
1083 mbox_free_channel(mtk_crtc->cmdq_client.chan);
1084 mtk_crtc->cmdq_client.chan = NULL;
1085 } else {
1086 ret = mtk_drm_cmdq_pkt_create(&mtk_crtc->cmdq_client,
1087 &mtk_crtc->cmdq_handle,
1088 PAGE_SIZE);
1089 if (ret) {
1090 dev_dbg(dev, "mtk_crtc %d failed to create cmdq packet\n",
1091 drm_crtc_index(&mtk_crtc->base));
1092 mbox_free_channel(mtk_crtc->cmdq_client.chan);
1093 mtk_crtc->cmdq_client.chan = NULL;
1094 }
1095 }
1096
1097 /* for sending blocking cmd in crtc disable */
1098 init_waitqueue_head(&mtk_crtc->cb_blocking_queue);
1099 }
1100#endif
1101
1102 if (conn_routes) {
1103 for (i = 0; i < num_conn_routes; i++) {
1104 unsigned int comp_id = conn_routes[i].route_ddp;
1105 struct device_node *node = priv->comp_node[comp_id];
1106 struct mtk_ddp_comp *comp = &priv->ddp_comp[comp_id];
1107
1108 if (!comp->dev) {
1109 dev_dbg(dev, "comp_id:%d, Component %pOF not initialized\n",
1110 comp_id, node);
1111 /* mark encoder_index to -1, if route comp device is not enabled */
1112 comp->encoder_index = -1;
1113 continue;
1114 }
1115
1116 mtk_ddp_comp_encoder_index_set(&priv->ddp_comp[comp_id]);
1117 }
1118
1119 mtk_crtc->num_conn_routes = num_conn_routes;
1120 mtk_crtc->conn_routes = conn_routes;
1121
1122 /* increase ddp_comp_nr at the end of mtk_drm_crtc_create */
1123 mtk_crtc->ddp_comp_nr++;
1124 }
1125
1126 return 0;
1127}
1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * Copyright (c) 2015 MediaTek Inc.
4 */
5
6#include <linux/clk.h>
7#include <linux/dma-mapping.h>
8#include <linux/mailbox_controller.h>
9#include <linux/pm_runtime.h>
10#include <linux/soc/mediatek/mtk-cmdq.h>
11#include <linux/soc/mediatek/mtk-mmsys.h>
12#include <linux/soc/mediatek/mtk-mutex.h>
13
14#include <asm/barrier.h>
15
16#include <drm/drm_atomic.h>
17#include <drm/drm_atomic_helper.h>
18#include <drm/drm_probe_helper.h>
19#include <drm/drm_vblank.h>
20
21#include "mtk_drm_drv.h"
22#include "mtk_drm_crtc.h"
23#include "mtk_drm_ddp_comp.h"
24#include "mtk_drm_gem.h"
25#include "mtk_drm_plane.h"
26
27/*
28 * struct mtk_drm_crtc - MediaTek specific crtc structure.
29 * @base: crtc object.
30 * @enabled: records whether crtc_enable succeeded
31 * @planes: array of 4 drm_plane structures, one for each overlay plane
32 * @pending_planes: whether any plane has pending changes to be applied
33 * @mmsys_dev: pointer to the mmsys device for configuration registers
34 * @mutex: handle to one of the ten disp_mutex streams
35 * @ddp_comp_nr: number of components in ddp_comp
36 * @ddp_comp: array of pointers the mtk_ddp_comp structures used by this crtc
37 *
38 * TODO: Needs update: this header is missing a bunch of member descriptions.
39 */
40struct mtk_drm_crtc {
41 struct drm_crtc base;
42 bool enabled;
43
44 bool pending_needs_vblank;
45 struct drm_pending_vblank_event *event;
46
47 struct drm_plane *planes;
48 unsigned int layer_nr;
49 bool pending_planes;
50 bool pending_async_planes;
51
52#if IS_REACHABLE(CONFIG_MTK_CMDQ)
53 struct cmdq_client cmdq_client;
54 struct cmdq_pkt cmdq_handle;
55 u32 cmdq_event;
56 u32 cmdq_vblank_cnt;
57 wait_queue_head_t cb_blocking_queue;
58#endif
59
60 struct device *mmsys_dev;
61 struct mtk_mutex *mutex;
62 unsigned int ddp_comp_nr;
63 struct mtk_ddp_comp **ddp_comp;
64
65 /* lock for display hardware access */
66 struct mutex hw_lock;
67 bool config_updating;
68};
69
70struct mtk_crtc_state {
71 struct drm_crtc_state base;
72
73 bool pending_config;
74 unsigned int pending_width;
75 unsigned int pending_height;
76 unsigned int pending_vrefresh;
77};
78
79static inline struct mtk_drm_crtc *to_mtk_crtc(struct drm_crtc *c)
80{
81 return container_of(c, struct mtk_drm_crtc, base);
82}
83
84static inline struct mtk_crtc_state *to_mtk_crtc_state(struct drm_crtc_state *s)
85{
86 return container_of(s, struct mtk_crtc_state, base);
87}
88
89static void mtk_drm_crtc_finish_page_flip(struct mtk_drm_crtc *mtk_crtc)
90{
91 struct drm_crtc *crtc = &mtk_crtc->base;
92 unsigned long flags;
93
94 spin_lock_irqsave(&crtc->dev->event_lock, flags);
95 drm_crtc_send_vblank_event(crtc, mtk_crtc->event);
96 drm_crtc_vblank_put(crtc);
97 mtk_crtc->event = NULL;
98 spin_unlock_irqrestore(&crtc->dev->event_lock, flags);
99}
100
101static void mtk_drm_finish_page_flip(struct mtk_drm_crtc *mtk_crtc)
102{
103 drm_crtc_handle_vblank(&mtk_crtc->base);
104 if (!mtk_crtc->config_updating && mtk_crtc->pending_needs_vblank) {
105 mtk_drm_crtc_finish_page_flip(mtk_crtc);
106 mtk_crtc->pending_needs_vblank = false;
107 }
108}
109
110#if IS_REACHABLE(CONFIG_MTK_CMDQ)
111static int mtk_drm_cmdq_pkt_create(struct cmdq_client *client, struct cmdq_pkt *pkt,
112 size_t size)
113{
114 struct device *dev;
115 dma_addr_t dma_addr;
116
117 pkt->va_base = kzalloc(size, GFP_KERNEL);
118 if (!pkt->va_base) {
119 kfree(pkt);
120 return -ENOMEM;
121 }
122 pkt->buf_size = size;
123 pkt->cl = (void *)client;
124
125 dev = client->chan->mbox->dev;
126 dma_addr = dma_map_single(dev, pkt->va_base, pkt->buf_size,
127 DMA_TO_DEVICE);
128 if (dma_mapping_error(dev, dma_addr)) {
129 dev_err(dev, "dma map failed, size=%u\n", (u32)(u64)size);
130 kfree(pkt->va_base);
131 kfree(pkt);
132 return -ENOMEM;
133 }
134
135 pkt->pa_base = dma_addr;
136
137 return 0;
138}
139
140static void mtk_drm_cmdq_pkt_destroy(struct cmdq_pkt *pkt)
141{
142 struct cmdq_client *client = (struct cmdq_client *)pkt->cl;
143
144 dma_unmap_single(client->chan->mbox->dev, pkt->pa_base, pkt->buf_size,
145 DMA_TO_DEVICE);
146 kfree(pkt->va_base);
147 kfree(pkt);
148}
149#endif
150
151static void mtk_drm_crtc_destroy(struct drm_crtc *crtc)
152{
153 struct mtk_drm_crtc *mtk_crtc = to_mtk_crtc(crtc);
154 int i;
155
156 mtk_mutex_put(mtk_crtc->mutex);
157#if IS_REACHABLE(CONFIG_MTK_CMDQ)
158 mtk_drm_cmdq_pkt_destroy(&mtk_crtc->cmdq_handle);
159
160 if (mtk_crtc->cmdq_client.chan) {
161 mbox_free_channel(mtk_crtc->cmdq_client.chan);
162 mtk_crtc->cmdq_client.chan = NULL;
163 }
164#endif
165
166 for (i = 0; i < mtk_crtc->ddp_comp_nr; i++) {
167 struct mtk_ddp_comp *comp;
168
169 comp = mtk_crtc->ddp_comp[i];
170 mtk_ddp_comp_unregister_vblank_cb(comp);
171 }
172
173 drm_crtc_cleanup(crtc);
174}
175
176static void mtk_drm_crtc_reset(struct drm_crtc *crtc)
177{
178 struct mtk_crtc_state *state;
179
180 if (crtc->state)
181 __drm_atomic_helper_crtc_destroy_state(crtc->state);
182
183 kfree(to_mtk_crtc_state(crtc->state));
184 crtc->state = NULL;
185
186 state = kzalloc(sizeof(*state), GFP_KERNEL);
187 if (state)
188 __drm_atomic_helper_crtc_reset(crtc, &state->base);
189}
190
191static struct drm_crtc_state *mtk_drm_crtc_duplicate_state(struct drm_crtc *crtc)
192{
193 struct mtk_crtc_state *state;
194
195 state = kmalloc(sizeof(*state), GFP_KERNEL);
196 if (!state)
197 return NULL;
198
199 __drm_atomic_helper_crtc_duplicate_state(crtc, &state->base);
200
201 WARN_ON(state->base.crtc != crtc);
202 state->base.crtc = crtc;
203 state->pending_config = false;
204
205 return &state->base;
206}
207
208static void mtk_drm_crtc_destroy_state(struct drm_crtc *crtc,
209 struct drm_crtc_state *state)
210{
211 __drm_atomic_helper_crtc_destroy_state(state);
212 kfree(to_mtk_crtc_state(state));
213}
214
215static bool mtk_drm_crtc_mode_fixup(struct drm_crtc *crtc,
216 const struct drm_display_mode *mode,
217 struct drm_display_mode *adjusted_mode)
218{
219 /* Nothing to do here, but this callback is mandatory. */
220 return true;
221}
222
223static void mtk_drm_crtc_mode_set_nofb(struct drm_crtc *crtc)
224{
225 struct mtk_crtc_state *state = to_mtk_crtc_state(crtc->state);
226
227 state->pending_width = crtc->mode.hdisplay;
228 state->pending_height = crtc->mode.vdisplay;
229 state->pending_vrefresh = drm_mode_vrefresh(&crtc->mode);
230 wmb(); /* Make sure the above parameters are set before update */
231 state->pending_config = true;
232}
233
234static int mtk_crtc_ddp_clk_enable(struct mtk_drm_crtc *mtk_crtc)
235{
236 int ret;
237 int i;
238
239 for (i = 0; i < mtk_crtc->ddp_comp_nr; i++) {
240 ret = mtk_ddp_comp_clk_enable(mtk_crtc->ddp_comp[i]);
241 if (ret) {
242 DRM_ERROR("Failed to enable clock %d: %d\n", i, ret);
243 goto err;
244 }
245 }
246
247 return 0;
248err:
249 while (--i >= 0)
250 mtk_ddp_comp_clk_disable(mtk_crtc->ddp_comp[i]);
251 return ret;
252}
253
254static void mtk_crtc_ddp_clk_disable(struct mtk_drm_crtc *mtk_crtc)
255{
256 int i;
257
258 for (i = 0; i < mtk_crtc->ddp_comp_nr; i++)
259 mtk_ddp_comp_clk_disable(mtk_crtc->ddp_comp[i]);
260}
261
262static
263struct mtk_ddp_comp *mtk_drm_ddp_comp_for_plane(struct drm_crtc *crtc,
264 struct drm_plane *plane,
265 unsigned int *local_layer)
266{
267 struct mtk_drm_crtc *mtk_crtc = to_mtk_crtc(crtc);
268 struct mtk_ddp_comp *comp;
269 int i, count = 0;
270 unsigned int local_index = plane - mtk_crtc->planes;
271
272 for (i = 0; i < mtk_crtc->ddp_comp_nr; i++) {
273 comp = mtk_crtc->ddp_comp[i];
274 if (local_index < (count + mtk_ddp_comp_layer_nr(comp))) {
275 *local_layer = local_index - count;
276 return comp;
277 }
278 count += mtk_ddp_comp_layer_nr(comp);
279 }
280
281 WARN(1, "Failed to find component for plane %d\n", plane->index);
282 return NULL;
283}
284
285#if IS_REACHABLE(CONFIG_MTK_CMDQ)
286static void ddp_cmdq_cb(struct mbox_client *cl, void *mssg)
287{
288 struct cmdq_cb_data *data = mssg;
289 struct cmdq_client *cmdq_cl = container_of(cl, struct cmdq_client, client);
290 struct mtk_drm_crtc *mtk_crtc = container_of(cmdq_cl, struct mtk_drm_crtc, cmdq_client);
291 struct mtk_crtc_state *state;
292 unsigned int i;
293
294 if (data->sta < 0)
295 return;
296
297 state = to_mtk_crtc_state(mtk_crtc->base.state);
298
299 state->pending_config = false;
300
301 if (mtk_crtc->pending_planes) {
302 for (i = 0; i < mtk_crtc->layer_nr; i++) {
303 struct drm_plane *plane = &mtk_crtc->planes[i];
304 struct mtk_plane_state *plane_state;
305
306 plane_state = to_mtk_plane_state(plane->state);
307
308 plane_state->pending.config = false;
309 }
310 mtk_crtc->pending_planes = false;
311 }
312
313 if (mtk_crtc->pending_async_planes) {
314 for (i = 0; i < mtk_crtc->layer_nr; i++) {
315 struct drm_plane *plane = &mtk_crtc->planes[i];
316 struct mtk_plane_state *plane_state;
317
318 plane_state = to_mtk_plane_state(plane->state);
319
320 plane_state->pending.async_config = false;
321 }
322 mtk_crtc->pending_async_planes = false;
323 }
324
325 mtk_crtc->cmdq_vblank_cnt = 0;
326 wake_up(&mtk_crtc->cb_blocking_queue);
327}
328#endif
329
330static int mtk_crtc_ddp_hw_init(struct mtk_drm_crtc *mtk_crtc)
331{
332 struct drm_crtc *crtc = &mtk_crtc->base;
333 struct drm_connector *connector;
334 struct drm_encoder *encoder;
335 struct drm_connector_list_iter conn_iter;
336 unsigned int width, height, vrefresh, bpc = MTK_MAX_BPC;
337 int ret;
338 int i;
339
340 if (WARN_ON(!crtc->state))
341 return -EINVAL;
342
343 width = crtc->state->adjusted_mode.hdisplay;
344 height = crtc->state->adjusted_mode.vdisplay;
345 vrefresh = drm_mode_vrefresh(&crtc->state->adjusted_mode);
346
347 drm_for_each_encoder(encoder, crtc->dev) {
348 if (encoder->crtc != crtc)
349 continue;
350
351 drm_connector_list_iter_begin(crtc->dev, &conn_iter);
352 drm_for_each_connector_iter(connector, &conn_iter) {
353 if (connector->encoder != encoder)
354 continue;
355 if (connector->display_info.bpc != 0 &&
356 bpc > connector->display_info.bpc)
357 bpc = connector->display_info.bpc;
358 }
359 drm_connector_list_iter_end(&conn_iter);
360 }
361
362 ret = pm_runtime_resume_and_get(crtc->dev->dev);
363 if (ret < 0) {
364 DRM_ERROR("Failed to enable power domain: %d\n", ret);
365 return ret;
366 }
367
368 ret = mtk_mutex_prepare(mtk_crtc->mutex);
369 if (ret < 0) {
370 DRM_ERROR("Failed to enable mutex clock: %d\n", ret);
371 goto err_pm_runtime_put;
372 }
373
374 ret = mtk_crtc_ddp_clk_enable(mtk_crtc);
375 if (ret < 0) {
376 DRM_ERROR("Failed to enable component clocks: %d\n", ret);
377 goto err_mutex_unprepare;
378 }
379
380 for (i = 0; i < mtk_crtc->ddp_comp_nr - 1; i++) {
381 mtk_mmsys_ddp_connect(mtk_crtc->mmsys_dev,
382 mtk_crtc->ddp_comp[i]->id,
383 mtk_crtc->ddp_comp[i + 1]->id);
384 mtk_mutex_add_comp(mtk_crtc->mutex,
385 mtk_crtc->ddp_comp[i]->id);
386 }
387 mtk_mutex_add_comp(mtk_crtc->mutex, mtk_crtc->ddp_comp[i]->id);
388 mtk_mutex_enable(mtk_crtc->mutex);
389
390 for (i = 0; i < mtk_crtc->ddp_comp_nr; i++) {
391 struct mtk_ddp_comp *comp = mtk_crtc->ddp_comp[i];
392
393 if (i == 1)
394 mtk_ddp_comp_bgclr_in_on(comp);
395
396 mtk_ddp_comp_config(comp, width, height, vrefresh, bpc, NULL);
397 mtk_ddp_comp_start(comp);
398 }
399
400 /* Initially configure all planes */
401 for (i = 0; i < mtk_crtc->layer_nr; i++) {
402 struct drm_plane *plane = &mtk_crtc->planes[i];
403 struct mtk_plane_state *plane_state;
404 struct mtk_ddp_comp *comp;
405 unsigned int local_layer;
406
407 plane_state = to_mtk_plane_state(plane->state);
408 comp = mtk_drm_ddp_comp_for_plane(crtc, plane, &local_layer);
409 if (comp)
410 mtk_ddp_comp_layer_config(comp, local_layer,
411 plane_state, NULL);
412 }
413
414 return 0;
415
416err_mutex_unprepare:
417 mtk_mutex_unprepare(mtk_crtc->mutex);
418err_pm_runtime_put:
419 pm_runtime_put(crtc->dev->dev);
420 return ret;
421}
422
423static void mtk_crtc_ddp_hw_fini(struct mtk_drm_crtc *mtk_crtc)
424{
425 struct drm_device *drm = mtk_crtc->base.dev;
426 struct drm_crtc *crtc = &mtk_crtc->base;
427 int i;
428
429 for (i = 0; i < mtk_crtc->ddp_comp_nr; i++) {
430 mtk_ddp_comp_stop(mtk_crtc->ddp_comp[i]);
431 if (i == 1)
432 mtk_ddp_comp_bgclr_in_off(mtk_crtc->ddp_comp[i]);
433 }
434
435 for (i = 0; i < mtk_crtc->ddp_comp_nr; i++)
436 mtk_mutex_remove_comp(mtk_crtc->mutex,
437 mtk_crtc->ddp_comp[i]->id);
438 mtk_mutex_disable(mtk_crtc->mutex);
439 for (i = 0; i < mtk_crtc->ddp_comp_nr - 1; i++) {
440 mtk_mmsys_ddp_disconnect(mtk_crtc->mmsys_dev,
441 mtk_crtc->ddp_comp[i]->id,
442 mtk_crtc->ddp_comp[i + 1]->id);
443 mtk_mutex_remove_comp(mtk_crtc->mutex,
444 mtk_crtc->ddp_comp[i]->id);
445 }
446 mtk_mutex_remove_comp(mtk_crtc->mutex, mtk_crtc->ddp_comp[i]->id);
447 mtk_crtc_ddp_clk_disable(mtk_crtc);
448 mtk_mutex_unprepare(mtk_crtc->mutex);
449
450 pm_runtime_put(drm->dev);
451
452 if (crtc->state->event && !crtc->state->active) {
453 spin_lock_irq(&crtc->dev->event_lock);
454 drm_crtc_send_vblank_event(crtc, crtc->state->event);
455 crtc->state->event = NULL;
456 spin_unlock_irq(&crtc->dev->event_lock);
457 }
458}
459
460static void mtk_crtc_ddp_config(struct drm_crtc *crtc,
461 struct cmdq_pkt *cmdq_handle)
462{
463 struct mtk_drm_crtc *mtk_crtc = to_mtk_crtc(crtc);
464 struct mtk_crtc_state *state = to_mtk_crtc_state(mtk_crtc->base.state);
465 struct mtk_ddp_comp *comp = mtk_crtc->ddp_comp[0];
466 unsigned int i;
467 unsigned int local_layer;
468
469 /*
470 * TODO: instead of updating the registers here, we should prepare
471 * working registers in atomic_commit and let the hardware command
472 * queue update module registers on vblank.
473 */
474 if (state->pending_config) {
475 mtk_ddp_comp_config(comp, state->pending_width,
476 state->pending_height,
477 state->pending_vrefresh, 0,
478 cmdq_handle);
479
480 if (!cmdq_handle)
481 state->pending_config = false;
482 }
483
484 if (mtk_crtc->pending_planes) {
485 for (i = 0; i < mtk_crtc->layer_nr; i++) {
486 struct drm_plane *plane = &mtk_crtc->planes[i];
487 struct mtk_plane_state *plane_state;
488
489 plane_state = to_mtk_plane_state(plane->state);
490
491 if (!plane_state->pending.config)
492 continue;
493
494 comp = mtk_drm_ddp_comp_for_plane(crtc, plane,
495 &local_layer);
496
497 if (comp)
498 mtk_ddp_comp_layer_config(comp, local_layer,
499 plane_state,
500 cmdq_handle);
501 if (!cmdq_handle)
502 plane_state->pending.config = false;
503 }
504
505 if (!cmdq_handle)
506 mtk_crtc->pending_planes = false;
507 }
508
509 if (mtk_crtc->pending_async_planes) {
510 for (i = 0; i < mtk_crtc->layer_nr; i++) {
511 struct drm_plane *plane = &mtk_crtc->planes[i];
512 struct mtk_plane_state *plane_state;
513
514 plane_state = to_mtk_plane_state(plane->state);
515
516 if (!plane_state->pending.async_config)
517 continue;
518
519 comp = mtk_drm_ddp_comp_for_plane(crtc, plane,
520 &local_layer);
521
522 if (comp)
523 mtk_ddp_comp_layer_config(comp, local_layer,
524 plane_state,
525 cmdq_handle);
526 if (!cmdq_handle)
527 plane_state->pending.async_config = false;
528 }
529
530 if (!cmdq_handle)
531 mtk_crtc->pending_async_planes = false;
532 }
533}
534
535static void mtk_drm_crtc_update_config(struct mtk_drm_crtc *mtk_crtc,
536 bool needs_vblank)
537{
538#if IS_REACHABLE(CONFIG_MTK_CMDQ)
539 struct cmdq_pkt *cmdq_handle = &mtk_crtc->cmdq_handle;
540#endif
541 struct drm_crtc *crtc = &mtk_crtc->base;
542 struct mtk_drm_private *priv = crtc->dev->dev_private;
543 unsigned int pending_planes = 0, pending_async_planes = 0;
544 int i;
545
546 mutex_lock(&mtk_crtc->hw_lock);
547 mtk_crtc->config_updating = true;
548 if (needs_vblank)
549 mtk_crtc->pending_needs_vblank = true;
550
551 for (i = 0; i < mtk_crtc->layer_nr; i++) {
552 struct drm_plane *plane = &mtk_crtc->planes[i];
553 struct mtk_plane_state *plane_state;
554
555 plane_state = to_mtk_plane_state(plane->state);
556 if (plane_state->pending.dirty) {
557 plane_state->pending.config = true;
558 plane_state->pending.dirty = false;
559 pending_planes |= BIT(i);
560 } else if (plane_state->pending.async_dirty) {
561 plane_state->pending.async_config = true;
562 plane_state->pending.async_dirty = false;
563 pending_async_planes |= BIT(i);
564 }
565 }
566 if (pending_planes)
567 mtk_crtc->pending_planes = true;
568 if (pending_async_planes)
569 mtk_crtc->pending_async_planes = true;
570
571 if (priv->data->shadow_register) {
572 mtk_mutex_acquire(mtk_crtc->mutex);
573 mtk_crtc_ddp_config(crtc, NULL);
574 mtk_mutex_release(mtk_crtc->mutex);
575 }
576#if IS_REACHABLE(CONFIG_MTK_CMDQ)
577 if (mtk_crtc->cmdq_client.chan) {
578 mbox_flush(mtk_crtc->cmdq_client.chan, 2000);
579 cmdq_handle->cmd_buf_size = 0;
580 cmdq_pkt_clear_event(cmdq_handle, mtk_crtc->cmdq_event);
581 cmdq_pkt_wfe(cmdq_handle, mtk_crtc->cmdq_event, false);
582 mtk_crtc_ddp_config(crtc, cmdq_handle);
583 cmdq_pkt_finalize(cmdq_handle);
584 dma_sync_single_for_device(mtk_crtc->cmdq_client.chan->mbox->dev,
585 cmdq_handle->pa_base,
586 cmdq_handle->cmd_buf_size,
587 DMA_TO_DEVICE);
588 /*
589 * CMDQ command should execute in next 3 vblank.
590 * One vblank interrupt before send message (occasionally)
591 * and one vblank interrupt after cmdq done,
592 * so it's timeout after 3 vblank interrupt.
593 * If it fail to execute in next 3 vblank, timeout happen.
594 */
595 mtk_crtc->cmdq_vblank_cnt = 3;
596
597 mbox_send_message(mtk_crtc->cmdq_client.chan, cmdq_handle);
598 mbox_client_txdone(mtk_crtc->cmdq_client.chan, 0);
599 }
600#endif
601 mtk_crtc->config_updating = false;
602 mutex_unlock(&mtk_crtc->hw_lock);
603}
604
605static void mtk_crtc_ddp_irq(void *data)
606{
607 struct drm_crtc *crtc = data;
608 struct mtk_drm_crtc *mtk_crtc = to_mtk_crtc(crtc);
609 struct mtk_drm_private *priv = crtc->dev->dev_private;
610
611#if IS_REACHABLE(CONFIG_MTK_CMDQ)
612 if (!priv->data->shadow_register && !mtk_crtc->cmdq_client.chan)
613 mtk_crtc_ddp_config(crtc, NULL);
614 else if (mtk_crtc->cmdq_vblank_cnt > 0 && --mtk_crtc->cmdq_vblank_cnt == 0)
615 DRM_ERROR("mtk_crtc %d CMDQ execute command timeout!\n",
616 drm_crtc_index(&mtk_crtc->base));
617#else
618 if (!priv->data->shadow_register)
619 mtk_crtc_ddp_config(crtc, NULL);
620#endif
621 mtk_drm_finish_page_flip(mtk_crtc);
622}
623
624static int mtk_drm_crtc_enable_vblank(struct drm_crtc *crtc)
625{
626 struct mtk_drm_crtc *mtk_crtc = to_mtk_crtc(crtc);
627 struct mtk_ddp_comp *comp = mtk_crtc->ddp_comp[0];
628
629 mtk_ddp_comp_enable_vblank(comp);
630
631 return 0;
632}
633
634static void mtk_drm_crtc_disable_vblank(struct drm_crtc *crtc)
635{
636 struct mtk_drm_crtc *mtk_crtc = to_mtk_crtc(crtc);
637 struct mtk_ddp_comp *comp = mtk_crtc->ddp_comp[0];
638
639 mtk_ddp_comp_disable_vblank(comp);
640}
641
642int mtk_drm_crtc_plane_check(struct drm_crtc *crtc, struct drm_plane *plane,
643 struct mtk_plane_state *state)
644{
645 unsigned int local_layer;
646 struct mtk_ddp_comp *comp;
647
648 comp = mtk_drm_ddp_comp_for_plane(crtc, plane, &local_layer);
649 if (comp)
650 return mtk_ddp_comp_layer_check(comp, local_layer, state);
651 return 0;
652}
653
654void mtk_drm_crtc_async_update(struct drm_crtc *crtc, struct drm_plane *plane,
655 struct drm_atomic_state *state)
656{
657 struct mtk_drm_crtc *mtk_crtc = to_mtk_crtc(crtc);
658
659 if (!mtk_crtc->enabled)
660 return;
661
662 mtk_drm_crtc_update_config(mtk_crtc, false);
663}
664
665static void mtk_drm_crtc_atomic_enable(struct drm_crtc *crtc,
666 struct drm_atomic_state *state)
667{
668 struct mtk_drm_crtc *mtk_crtc = to_mtk_crtc(crtc);
669 struct mtk_ddp_comp *comp = mtk_crtc->ddp_comp[0];
670 int ret;
671
672 DRM_DEBUG_DRIVER("%s %d\n", __func__, crtc->base.id);
673
674 ret = pm_runtime_resume_and_get(comp->dev);
675 if (ret < 0) {
676 DRM_DEV_ERROR(comp->dev, "Failed to enable power domain: %d\n", ret);
677 return;
678 }
679
680 ret = mtk_crtc_ddp_hw_init(mtk_crtc);
681 if (ret) {
682 pm_runtime_put(comp->dev);
683 return;
684 }
685
686 drm_crtc_vblank_on(crtc);
687 mtk_crtc->enabled = true;
688}
689
690static void mtk_drm_crtc_atomic_disable(struct drm_crtc *crtc,
691 struct drm_atomic_state *state)
692{
693 struct mtk_drm_crtc *mtk_crtc = to_mtk_crtc(crtc);
694 struct mtk_ddp_comp *comp = mtk_crtc->ddp_comp[0];
695 int i, ret;
696
697 DRM_DEBUG_DRIVER("%s %d\n", __func__, crtc->base.id);
698 if (!mtk_crtc->enabled)
699 return;
700
701 /* Set all pending plane state to disabled */
702 for (i = 0; i < mtk_crtc->layer_nr; i++) {
703 struct drm_plane *plane = &mtk_crtc->planes[i];
704 struct mtk_plane_state *plane_state;
705
706 plane_state = to_mtk_plane_state(plane->state);
707 plane_state->pending.enable = false;
708 plane_state->pending.config = true;
709 }
710 mtk_crtc->pending_planes = true;
711
712 mtk_drm_crtc_update_config(mtk_crtc, false);
713#if IS_REACHABLE(CONFIG_MTK_CMDQ)
714 /* Wait for planes to be disabled by cmdq */
715 if (mtk_crtc->cmdq_client.chan)
716 wait_event_timeout(mtk_crtc->cb_blocking_queue,
717 mtk_crtc->cmdq_vblank_cnt == 0,
718 msecs_to_jiffies(500));
719#endif
720 /* Wait for planes to be disabled */
721 drm_crtc_wait_one_vblank(crtc);
722
723 drm_crtc_vblank_off(crtc);
724 mtk_crtc_ddp_hw_fini(mtk_crtc);
725 ret = pm_runtime_put(comp->dev);
726 if (ret < 0)
727 DRM_DEV_ERROR(comp->dev, "Failed to disable power domain: %d\n", ret);
728
729 mtk_crtc->enabled = false;
730}
731
732static void mtk_drm_crtc_atomic_begin(struct drm_crtc *crtc,
733 struct drm_atomic_state *state)
734{
735 struct drm_crtc_state *crtc_state = drm_atomic_get_new_crtc_state(state,
736 crtc);
737 struct mtk_crtc_state *mtk_crtc_state = to_mtk_crtc_state(crtc_state);
738 struct mtk_drm_crtc *mtk_crtc = to_mtk_crtc(crtc);
739
740 if (mtk_crtc->event && mtk_crtc_state->base.event)
741 DRM_ERROR("new event while there is still a pending event\n");
742
743 if (mtk_crtc_state->base.event) {
744 mtk_crtc_state->base.event->pipe = drm_crtc_index(crtc);
745 WARN_ON(drm_crtc_vblank_get(crtc) != 0);
746 mtk_crtc->event = mtk_crtc_state->base.event;
747 mtk_crtc_state->base.event = NULL;
748 }
749}
750
751static void mtk_drm_crtc_atomic_flush(struct drm_crtc *crtc,
752 struct drm_atomic_state *state)
753{
754 struct mtk_drm_crtc *mtk_crtc = to_mtk_crtc(crtc);
755 int i;
756
757 if (crtc->state->color_mgmt_changed)
758 for (i = 0; i < mtk_crtc->ddp_comp_nr; i++) {
759 mtk_ddp_gamma_set(mtk_crtc->ddp_comp[i], crtc->state);
760 mtk_ddp_ctm_set(mtk_crtc->ddp_comp[i], crtc->state);
761 }
762 mtk_drm_crtc_update_config(mtk_crtc, !!mtk_crtc->event);
763}
764
765static const struct drm_crtc_funcs mtk_crtc_funcs = {
766 .set_config = drm_atomic_helper_set_config,
767 .page_flip = drm_atomic_helper_page_flip,
768 .destroy = mtk_drm_crtc_destroy,
769 .reset = mtk_drm_crtc_reset,
770 .atomic_duplicate_state = mtk_drm_crtc_duplicate_state,
771 .atomic_destroy_state = mtk_drm_crtc_destroy_state,
772 .enable_vblank = mtk_drm_crtc_enable_vblank,
773 .disable_vblank = mtk_drm_crtc_disable_vblank,
774};
775
776static const struct drm_crtc_helper_funcs mtk_crtc_helper_funcs = {
777 .mode_fixup = mtk_drm_crtc_mode_fixup,
778 .mode_set_nofb = mtk_drm_crtc_mode_set_nofb,
779 .atomic_begin = mtk_drm_crtc_atomic_begin,
780 .atomic_flush = mtk_drm_crtc_atomic_flush,
781 .atomic_enable = mtk_drm_crtc_atomic_enable,
782 .atomic_disable = mtk_drm_crtc_atomic_disable,
783};
784
785static int mtk_drm_crtc_init(struct drm_device *drm,
786 struct mtk_drm_crtc *mtk_crtc,
787 unsigned int pipe)
788{
789 struct drm_plane *primary = NULL;
790 struct drm_plane *cursor = NULL;
791 int i, ret;
792
793 for (i = 0; i < mtk_crtc->layer_nr; i++) {
794 if (mtk_crtc->planes[i].type == DRM_PLANE_TYPE_PRIMARY)
795 primary = &mtk_crtc->planes[i];
796 else if (mtk_crtc->planes[i].type == DRM_PLANE_TYPE_CURSOR)
797 cursor = &mtk_crtc->planes[i];
798 }
799
800 ret = drm_crtc_init_with_planes(drm, &mtk_crtc->base, primary, cursor,
801 &mtk_crtc_funcs, NULL);
802 if (ret)
803 goto err_cleanup_crtc;
804
805 drm_crtc_helper_add(&mtk_crtc->base, &mtk_crtc_helper_funcs);
806
807 return 0;
808
809err_cleanup_crtc:
810 drm_crtc_cleanup(&mtk_crtc->base);
811 return ret;
812}
813
814static int mtk_drm_crtc_num_comp_planes(struct mtk_drm_crtc *mtk_crtc,
815 int comp_idx)
816{
817 struct mtk_ddp_comp *comp;
818
819 if (comp_idx > 1)
820 return 0;
821
822 comp = mtk_crtc->ddp_comp[comp_idx];
823 if (!comp->funcs)
824 return 0;
825
826 if (comp_idx == 1 && !comp->funcs->bgclr_in_on)
827 return 0;
828
829 return mtk_ddp_comp_layer_nr(comp);
830}
831
832static inline
833enum drm_plane_type mtk_drm_crtc_plane_type(unsigned int plane_idx,
834 unsigned int num_planes)
835{
836 if (plane_idx == 0)
837 return DRM_PLANE_TYPE_PRIMARY;
838 else if (plane_idx == (num_planes - 1))
839 return DRM_PLANE_TYPE_CURSOR;
840 else
841 return DRM_PLANE_TYPE_OVERLAY;
842
843}
844
845static int mtk_drm_crtc_init_comp_planes(struct drm_device *drm_dev,
846 struct mtk_drm_crtc *mtk_crtc,
847 int comp_idx, int pipe)
848{
849 int num_planes = mtk_drm_crtc_num_comp_planes(mtk_crtc, comp_idx);
850 struct mtk_ddp_comp *comp = mtk_crtc->ddp_comp[comp_idx];
851 int i, ret;
852
853 for (i = 0; i < num_planes; i++) {
854 ret = mtk_plane_init(drm_dev,
855 &mtk_crtc->planes[mtk_crtc->layer_nr],
856 BIT(pipe),
857 mtk_drm_crtc_plane_type(mtk_crtc->layer_nr,
858 num_planes),
859 mtk_ddp_comp_supported_rotations(comp));
860 if (ret)
861 return ret;
862
863 mtk_crtc->layer_nr++;
864 }
865 return 0;
866}
867
868int mtk_drm_crtc_create(struct drm_device *drm_dev,
869 const enum mtk_ddp_comp_id *path, unsigned int path_len)
870{
871 struct mtk_drm_private *priv = drm_dev->dev_private;
872 struct device *dev = drm_dev->dev;
873 struct mtk_drm_crtc *mtk_crtc;
874 unsigned int num_comp_planes = 0;
875 int pipe = priv->num_pipes;
876 int ret;
877 int i;
878 bool has_ctm = false;
879 uint gamma_lut_size = 0;
880
881 if (!path)
882 return 0;
883
884 for (i = 0; i < path_len; i++) {
885 enum mtk_ddp_comp_id comp_id = path[i];
886 struct device_node *node;
887 struct mtk_ddp_comp *comp;
888
889 node = priv->comp_node[comp_id];
890 comp = &priv->ddp_comp[comp_id];
891
892 if (!node) {
893 dev_info(dev,
894 "Not creating crtc %d because component %d is disabled or missing\n",
895 pipe, comp_id);
896 return 0;
897 }
898
899 if (!comp->dev) {
900 dev_err(dev, "Component %pOF not initialized\n", node);
901 return -ENODEV;
902 }
903 }
904
905 mtk_crtc = devm_kzalloc(dev, sizeof(*mtk_crtc), GFP_KERNEL);
906 if (!mtk_crtc)
907 return -ENOMEM;
908
909 mtk_crtc->mmsys_dev = priv->mmsys_dev;
910 mtk_crtc->ddp_comp_nr = path_len;
911 mtk_crtc->ddp_comp = devm_kmalloc_array(dev, mtk_crtc->ddp_comp_nr,
912 sizeof(*mtk_crtc->ddp_comp),
913 GFP_KERNEL);
914 if (!mtk_crtc->ddp_comp)
915 return -ENOMEM;
916
917 mtk_crtc->mutex = mtk_mutex_get(priv->mutex_dev);
918 if (IS_ERR(mtk_crtc->mutex)) {
919 ret = PTR_ERR(mtk_crtc->mutex);
920 dev_err(dev, "Failed to get mutex: %d\n", ret);
921 return ret;
922 }
923
924 for (i = 0; i < mtk_crtc->ddp_comp_nr; i++) {
925 enum mtk_ddp_comp_id comp_id = path[i];
926 struct mtk_ddp_comp *comp;
927
928 comp = &priv->ddp_comp[comp_id];
929 mtk_crtc->ddp_comp[i] = comp;
930
931 if (comp->funcs) {
932 if (comp->funcs->gamma_set)
933 gamma_lut_size = MTK_LUT_SIZE;
934
935 if (comp->funcs->ctm_set)
936 has_ctm = true;
937 }
938
939 mtk_ddp_comp_register_vblank_cb(comp, mtk_crtc_ddp_irq,
940 &mtk_crtc->base);
941 }
942
943 for (i = 0; i < mtk_crtc->ddp_comp_nr; i++)
944 num_comp_planes += mtk_drm_crtc_num_comp_planes(mtk_crtc, i);
945
946 mtk_crtc->planes = devm_kcalloc(dev, num_comp_planes,
947 sizeof(struct drm_plane), GFP_KERNEL);
948
949 for (i = 0; i < mtk_crtc->ddp_comp_nr; i++) {
950 ret = mtk_drm_crtc_init_comp_planes(drm_dev, mtk_crtc, i,
951 pipe);
952 if (ret)
953 return ret;
954 }
955
956 ret = mtk_drm_crtc_init(drm_dev, mtk_crtc, pipe);
957 if (ret < 0)
958 return ret;
959
960 if (gamma_lut_size)
961 drm_mode_crtc_set_gamma_size(&mtk_crtc->base, gamma_lut_size);
962 drm_crtc_enable_color_mgmt(&mtk_crtc->base, 0, has_ctm, gamma_lut_size);
963 priv->num_pipes++;
964 mutex_init(&mtk_crtc->hw_lock);
965
966#if IS_REACHABLE(CONFIG_MTK_CMDQ)
967 mtk_crtc->cmdq_client.client.dev = mtk_crtc->mmsys_dev;
968 mtk_crtc->cmdq_client.client.tx_block = false;
969 mtk_crtc->cmdq_client.client.knows_txdone = true;
970 mtk_crtc->cmdq_client.client.rx_callback = ddp_cmdq_cb;
971 mtk_crtc->cmdq_client.chan =
972 mbox_request_channel(&mtk_crtc->cmdq_client.client,
973 drm_crtc_index(&mtk_crtc->base));
974 if (IS_ERR(mtk_crtc->cmdq_client.chan)) {
975 dev_dbg(dev, "mtk_crtc %d failed to create mailbox client, writing register by CPU now\n",
976 drm_crtc_index(&mtk_crtc->base));
977 mtk_crtc->cmdq_client.chan = NULL;
978 }
979
980 if (mtk_crtc->cmdq_client.chan) {
981 ret = of_property_read_u32_index(priv->mutex_node,
982 "mediatek,gce-events",
983 drm_crtc_index(&mtk_crtc->base),
984 &mtk_crtc->cmdq_event);
985 if (ret) {
986 dev_dbg(dev, "mtk_crtc %d failed to get mediatek,gce-events property\n",
987 drm_crtc_index(&mtk_crtc->base));
988 mbox_free_channel(mtk_crtc->cmdq_client.chan);
989 mtk_crtc->cmdq_client.chan = NULL;
990 } else {
991 ret = mtk_drm_cmdq_pkt_create(&mtk_crtc->cmdq_client,
992 &mtk_crtc->cmdq_handle,
993 PAGE_SIZE);
994 if (ret) {
995 dev_dbg(dev, "mtk_crtc %d failed to create cmdq packet\n",
996 drm_crtc_index(&mtk_crtc->base));
997 mbox_free_channel(mtk_crtc->cmdq_client.chan);
998 mtk_crtc->cmdq_client.chan = NULL;
999 }
1000 }
1001
1002 /* for sending blocking cmd in crtc disable */
1003 init_waitqueue_head(&mtk_crtc->cb_blocking_queue);
1004 }
1005#endif
1006 return 0;
1007}