1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * Copyright (C) 2013 Red Hat
4 * Author: Rob Clark <robdclark@gmail.com>
5 */
6
7#include <drm/drm_crtc.h>
8#include <drm/drm_flip_work.h>
9#include <drm/drm_managed.h>
10#include <drm/drm_mode.h>
11#include <drm/drm_probe_helper.h>
12#include <drm/drm_vblank.h>
13
14#include "mdp4_kms.h"
15#include "msm_gem.h"
16
17struct mdp4_crtc {
18 struct drm_crtc base;
19 char name[8];
20 int id;
21 int ovlp;
22 enum mdp4_dma dma;
23 bool enabled;
24
25 /* which mixer/encoder we route output to: */
26 int mixer;
27
28 struct {
29 spinlock_t lock;
30 bool stale;
31 uint32_t width, height;
32 uint32_t x, y;
33
34 /* next cursor to scan-out: */
35 uint32_t next_iova;
36 struct drm_gem_object *next_bo;
37
38 /* current cursor being scanned out: */
39 struct drm_gem_object *scanout_bo;
40 } cursor;
41
42
43 /* if there is a pending flip, these will be non-null: */
44 struct drm_pending_vblank_event *event;
45
46 /* Bits have been flushed at the last commit,
47 * used to decide if a vsync has happened since last commit.
48 */
49 u32 flushed_mask;
50
51#define PENDING_CURSOR 0x1
52#define PENDING_FLIP 0x2
53 atomic_t pending;
54
55 /* for unref'ing cursor bo's after scanout completes: */
56 struct drm_flip_work unref_cursor_work;
57
58 struct mdp_irq vblank;
59 struct mdp_irq err;
60};
61#define to_mdp4_crtc(x) container_of(x, struct mdp4_crtc, base)
62
63static struct mdp4_kms *get_kms(struct drm_crtc *crtc)
64{
65 struct msm_drm_private *priv = crtc->dev->dev_private;
66 return to_mdp4_kms(to_mdp_kms(priv->kms));
67}
68
69static void request_pending(struct drm_crtc *crtc, uint32_t pending)
70{
71 struct mdp4_crtc *mdp4_crtc = to_mdp4_crtc(crtc);
72
73 atomic_or(i: pending, v: &mdp4_crtc->pending);
74 mdp_irq_register(&get_kms(crtc)->base, &mdp4_crtc->vblank);
75}
76
77static void crtc_flush(struct drm_crtc *crtc)
78{
79 struct mdp4_crtc *mdp4_crtc = to_mdp4_crtc(crtc);
80 struct mdp4_kms *mdp4_kms = get_kms(crtc);
81 struct drm_plane *plane;
82 uint32_t flush = 0;
83
84 drm_atomic_crtc_for_each_plane(plane, crtc) {
85 enum mdp4_pipe pipe_id = mdp4_plane_pipe(plane);
86 flush |= pipe2flush(pipe: pipe_id);
87 }
88
89 flush |= ovlp2flush(ovlp: mdp4_crtc->ovlp);
90
91 DBG("%s: flush=%08x", mdp4_crtc->name, flush);
92
93 mdp4_crtc->flushed_mask = flush;
94
95 mdp4_write(mdp4_kms, REG_MDP4_OVERLAY_FLUSH, flush);
96}
97
98/* if file!=NULL, this is preclose potential cancel-flip path */
99static void complete_flip(struct drm_crtc *crtc, struct drm_file *file)
100{
101 struct mdp4_crtc *mdp4_crtc = to_mdp4_crtc(crtc);
102 struct drm_device *dev = crtc->dev;
103 struct drm_pending_vblank_event *event;
104 unsigned long flags;
105
106 spin_lock_irqsave(&dev->event_lock, flags);
107 event = mdp4_crtc->event;
108 if (event) {
109 mdp4_crtc->event = NULL;
110 DBG("%s: send event: %p", mdp4_crtc->name, event);
111 drm_crtc_send_vblank_event(crtc, e: event);
112 }
113 spin_unlock_irqrestore(lock: &dev->event_lock, flags);
114}
115
116static void unref_cursor_worker(struct drm_flip_work *work, void *val)
117{
118 struct mdp4_crtc *mdp4_crtc =
119 container_of(work, struct mdp4_crtc, unref_cursor_work);
120 struct mdp4_kms *mdp4_kms = get_kms(crtc: &mdp4_crtc->base);
121 struct msm_kms *kms = &mdp4_kms->base.base;
122
123 msm_gem_unpin_iova(val, kms->aspace);
124 drm_gem_object_put(val);
125}
126
127/* statically (for now) map planes to mixer stage (z-order): */
128static const int idxs[] = {
129 [VG1] = 1,
130 [VG2] = 2,
131 [RGB1] = 0,
132 [RGB2] = 0,
133 [RGB3] = 0,
134 [VG3] = 3,
135 [VG4] = 4,
136
137};
138
139/* setup mixer config, for which we need to consider all crtc's and
140 * the planes attached to them
141 *
142 * TODO may possibly need some extra locking here
143 */
144static void setup_mixer(struct mdp4_kms *mdp4_kms)
145{
146 struct drm_mode_config *config = &mdp4_kms->dev->mode_config;
147 struct drm_crtc *crtc;
148 uint32_t mixer_cfg = 0;
149 static const enum mdp_mixer_stage_id stages[] = {
150 STAGE_BASE, STAGE0, STAGE1, STAGE2, STAGE3,
151 };
152
153 list_for_each_entry(crtc, &config->crtc_list, head) {
154 struct mdp4_crtc *mdp4_crtc = to_mdp4_crtc(crtc);
155 struct drm_plane *plane;
156
157 drm_atomic_crtc_for_each_plane(plane, crtc) {
158 enum mdp4_pipe pipe_id = mdp4_plane_pipe(plane);
159 int idx = idxs[pipe_id];
160 mixer_cfg = mixercfg(mixer_cfg, mixer: mdp4_crtc->mixer,
161 pipe: pipe_id, stage: stages[idx]);
162 }
163 }
164
165 mdp4_write(mdp4_kms, REG_MDP4_LAYERMIXER_IN_CFG, mixer_cfg);
166}
167
168static void blend_setup(struct drm_crtc *crtc)
169{
170 struct mdp4_crtc *mdp4_crtc = to_mdp4_crtc(crtc);
171 struct mdp4_kms *mdp4_kms = get_kms(crtc);
172 struct drm_plane *plane;
173 int i, ovlp = mdp4_crtc->ovlp;
174 bool alpha[4]= { false, false, false, false };
175
176 mdp4_write(mdp4_kms, reg: REG_MDP4_OVLP_TRANSP_LOW0(ovlp), data: 0);
177 mdp4_write(mdp4_kms, reg: REG_MDP4_OVLP_TRANSP_LOW1(ovlp), data: 0);
178 mdp4_write(mdp4_kms, reg: REG_MDP4_OVLP_TRANSP_HIGH0(ovlp), data: 0);
179 mdp4_write(mdp4_kms, reg: REG_MDP4_OVLP_TRANSP_HIGH1(ovlp), data: 0);
180
181 drm_atomic_crtc_for_each_plane(plane, crtc) {
182 enum mdp4_pipe pipe_id = mdp4_plane_pipe(plane);
183 int idx = idxs[pipe_id];
184 if (idx > 0) {
185 const struct msm_format *format =
186 msm_framebuffer_format(plane->state->fb);
187 alpha[idx-1] = format->alpha_enable;
188 }
189 }
190
191 for (i = 0; i < 4; i++) {
192 uint32_t op;
193
194 if (alpha[i]) {
195 op = MDP4_OVLP_STAGE_OP_FG_ALPHA(FG_PIXEL) |
196 MDP4_OVLP_STAGE_OP_BG_ALPHA(FG_PIXEL) |
197 MDP4_OVLP_STAGE_OP_BG_INV_ALPHA;
198 } else {
199 op = MDP4_OVLP_STAGE_OP_FG_ALPHA(FG_CONST) |
200 MDP4_OVLP_STAGE_OP_BG_ALPHA(BG_CONST);
201 }
202
203 mdp4_write(mdp4_kms, reg: REG_MDP4_OVLP_STAGE_FG_ALPHA(ovlp, i), data: 0xff);
204 mdp4_write(mdp4_kms, reg: REG_MDP4_OVLP_STAGE_BG_ALPHA(ovlp, i), data: 0x00);
205 mdp4_write(mdp4_kms, reg: REG_MDP4_OVLP_STAGE_OP(ovlp, i), data: op);
206 mdp4_write(mdp4_kms, reg: REG_MDP4_OVLP_STAGE_CO3(ovlp, i), data: 1);
207 mdp4_write(mdp4_kms, reg: REG_MDP4_OVLP_STAGE_TRANSP_LOW0(ovlp, i), data: 0);
208 mdp4_write(mdp4_kms, reg: REG_MDP4_OVLP_STAGE_TRANSP_LOW1(ovlp, i), data: 0);
209 mdp4_write(mdp4_kms, reg: REG_MDP4_OVLP_STAGE_TRANSP_HIGH0(ovlp, i), data: 0);
210 mdp4_write(mdp4_kms, reg: REG_MDP4_OVLP_STAGE_TRANSP_HIGH1(ovlp, i), data: 0);
211 }
212
213 setup_mixer(mdp4_kms);
214}
215
216static void mdp4_crtc_mode_set_nofb(struct drm_crtc *crtc)
217{
218 struct mdp4_crtc *mdp4_crtc = to_mdp4_crtc(crtc);
219 struct mdp4_kms *mdp4_kms = get_kms(crtc);
220 enum mdp4_dma dma = mdp4_crtc->dma;
221 int ovlp = mdp4_crtc->ovlp;
222 struct drm_display_mode *mode;
223
224 if (WARN_ON(!crtc->state))
225 return;
226
227 mode = &crtc->state->adjusted_mode;
228
229 DBG("%s: set mode: " DRM_MODE_FMT,
230 mdp4_crtc->name, DRM_MODE_ARG(mode));
231
232 mdp4_write(mdp4_kms, reg: REG_MDP4_DMA_SRC_SIZE(dma),
233 data: MDP4_DMA_SRC_SIZE_WIDTH(mode->hdisplay) |
234 MDP4_DMA_SRC_SIZE_HEIGHT(mode->vdisplay));
235
236 /* take data from pipe: */
237 mdp4_write(mdp4_kms, reg: REG_MDP4_DMA_SRC_BASE(dma), data: 0);
238 mdp4_write(mdp4_kms, reg: REG_MDP4_DMA_SRC_STRIDE(dma), data: 0);
239 mdp4_write(mdp4_kms, reg: REG_MDP4_DMA_DST_SIZE(dma),
240 data: MDP4_DMA_DST_SIZE_WIDTH(0) |
241 MDP4_DMA_DST_SIZE_HEIGHT(0));
242
243 mdp4_write(mdp4_kms, reg: REG_MDP4_OVLP_BASE(ovlp), data: 0);
244 mdp4_write(mdp4_kms, reg: REG_MDP4_OVLP_SIZE(ovlp),
245 data: MDP4_OVLP_SIZE_WIDTH(mode->hdisplay) |
246 MDP4_OVLP_SIZE_HEIGHT(mode->vdisplay));
247 mdp4_write(mdp4_kms, reg: REG_MDP4_OVLP_STRIDE(ovlp), data: 0);
248
249 mdp4_write(mdp4_kms, reg: REG_MDP4_OVLP_CFG(ovlp), data: 1);
250
251 if (dma == DMA_E) {
252 mdp4_write(mdp4_kms, reg: REG_MDP4_DMA_E_QUANT(0), data: 0x00ff0000);
253 mdp4_write(mdp4_kms, reg: REG_MDP4_DMA_E_QUANT(1), data: 0x00ff0000);
254 mdp4_write(mdp4_kms, reg: REG_MDP4_DMA_E_QUANT(2), data: 0x00ff0000);
255 }
256}
257
258static void mdp4_crtc_atomic_disable(struct drm_crtc *crtc,
259 struct drm_atomic_state *state)
260{
261 struct mdp4_crtc *mdp4_crtc = to_mdp4_crtc(crtc);
262 struct mdp4_kms *mdp4_kms = get_kms(crtc);
263 unsigned long flags;
264
265 DBG("%s", mdp4_crtc->name);
266
267 if (WARN_ON(!mdp4_crtc->enabled))
268 return;
269
270 /* Disable/save vblank irq handling before power is disabled */
271 drm_crtc_vblank_off(crtc);
272
273 mdp_irq_unregister(&mdp4_kms->base, &mdp4_crtc->err);
274 mdp4_disable(mdp4_kms);
275
276 if (crtc->state->event && !crtc->state->active) {
277 WARN_ON(mdp4_crtc->event);
278 spin_lock_irqsave(&mdp4_kms->dev->event_lock, flags);
279 drm_crtc_send_vblank_event(crtc, e: crtc->state->event);
280 crtc->state->event = NULL;
281 spin_unlock_irqrestore(lock: &mdp4_kms->dev->event_lock, flags);
282 }
283
284 mdp4_crtc->enabled = false;
285}
286
287static void mdp4_crtc_atomic_enable(struct drm_crtc *crtc,
288 struct drm_atomic_state *state)
289{
290 struct mdp4_crtc *mdp4_crtc = to_mdp4_crtc(crtc);
291 struct mdp4_kms *mdp4_kms = get_kms(crtc);
292
293 DBG("%s", mdp4_crtc->name);
294
295 if (WARN_ON(mdp4_crtc->enabled))
296 return;
297
298 mdp4_enable(mdp4_kms);
299
300 /* Restore vblank irq handling after power is enabled */
301 drm_crtc_vblank_on(crtc);
302
303 mdp_irq_register(&mdp4_kms->base, &mdp4_crtc->err);
304
305 crtc_flush(crtc);
306
307 mdp4_crtc->enabled = true;
308}
309
310static int mdp4_crtc_atomic_check(struct drm_crtc *crtc,
311 struct drm_atomic_state *state)
312{
313 struct mdp4_crtc *mdp4_crtc = to_mdp4_crtc(crtc);
314 DBG("%s: check", mdp4_crtc->name);
315 // TODO anything else to check?
316 return 0;
317}
318
319static void mdp4_crtc_atomic_begin(struct drm_crtc *crtc,
320 struct drm_atomic_state *state)
321{
322 struct mdp4_crtc *mdp4_crtc = to_mdp4_crtc(crtc);
323 DBG("%s: begin", mdp4_crtc->name);
324}
325
326static void mdp4_crtc_atomic_flush(struct drm_crtc *crtc,
327 struct drm_atomic_state *state)
328{
329 struct mdp4_crtc *mdp4_crtc = to_mdp4_crtc(crtc);
330 struct drm_device *dev = crtc->dev;
331 unsigned long flags;
332
333 DBG("%s: event: %p", mdp4_crtc->name, crtc->state->event);
334
335 WARN_ON(mdp4_crtc->event);
336
337 spin_lock_irqsave(&dev->event_lock, flags);
338 mdp4_crtc->event = crtc->state->event;
339 crtc->state->event = NULL;
340 spin_unlock_irqrestore(lock: &dev->event_lock, flags);
341
342 blend_setup(crtc);
343 crtc_flush(crtc);
344 request_pending(crtc, PENDING_FLIP);
345}
346
347#define CURSOR_WIDTH 64
348#define CURSOR_HEIGHT 64
349
350/* called from IRQ to update cursor related registers (if needed). The
351 * cursor registers, other than x/y position, appear not to be double
352 * buffered, and changing them other than from vblank seems to trigger
353 * underflow.
354 */
355static void update_cursor(struct drm_crtc *crtc)
356{
357 struct mdp4_crtc *mdp4_crtc = to_mdp4_crtc(crtc);
358 struct mdp4_kms *mdp4_kms = get_kms(crtc);
359 struct msm_kms *kms = &mdp4_kms->base.base;
360 enum mdp4_dma dma = mdp4_crtc->dma;
361 unsigned long flags;
362
363 spin_lock_irqsave(&mdp4_crtc->cursor.lock, flags);
364 if (mdp4_crtc->cursor.stale) {
365 struct drm_gem_object *next_bo = mdp4_crtc->cursor.next_bo;
366 struct drm_gem_object *prev_bo = mdp4_crtc->cursor.scanout_bo;
367 uint64_t iova = mdp4_crtc->cursor.next_iova;
368
369 if (next_bo) {
370 /* take a obj ref + iova ref when we start scanning out: */
371 drm_gem_object_get(next_bo);
372 msm_gem_get_and_pin_iova(next_bo, kms->aspace, &iova);
373
374 /* enable cursor: */
375 mdp4_write(mdp4_kms, reg: REG_MDP4_DMA_CURSOR_SIZE(dma),
376 data: MDP4_DMA_CURSOR_SIZE_WIDTH(mdp4_crtc->cursor.width) |
377 MDP4_DMA_CURSOR_SIZE_HEIGHT(mdp4_crtc->cursor.height));
378 mdp4_write(mdp4_kms, reg: REG_MDP4_DMA_CURSOR_BASE(dma), data: iova);
379 mdp4_write(mdp4_kms, REG_MDP4_DMA_CURSOR_BLEND_CONFIG(dma),
380 MDP4_DMA_CURSOR_BLEND_CONFIG_FORMAT(CURSOR_ARGB) |
381 MDP4_DMA_CURSOR_BLEND_CONFIG_CURSOR_EN);
382 } else {
383 /* disable cursor: */
384 mdp4_write(mdp4_kms, reg: REG_MDP4_DMA_CURSOR_BASE(dma),
385 data: mdp4_kms->blank_cursor_iova);
386 }
387
388 /* and drop the iova ref + obj rev when done scanning out: */
389 if (prev_bo)
390 drm_flip_work_queue(work: &mdp4_crtc->unref_cursor_work, val: prev_bo);
391
392 mdp4_crtc->cursor.scanout_bo = next_bo;
393 mdp4_crtc->cursor.stale = false;
394 }
395
396 mdp4_write(mdp4_kms, reg: REG_MDP4_DMA_CURSOR_POS(dma),
397 data: MDP4_DMA_CURSOR_POS_X(mdp4_crtc->cursor.x) |
398 MDP4_DMA_CURSOR_POS_Y(mdp4_crtc->cursor.y));
399
400 spin_unlock_irqrestore(lock: &mdp4_crtc->cursor.lock, flags);
401}
402
403static int mdp4_crtc_cursor_set(struct drm_crtc *crtc,
404 struct drm_file *file_priv, uint32_t handle,
405 uint32_t width, uint32_t height)
406{
407 struct mdp4_crtc *mdp4_crtc = to_mdp4_crtc(crtc);
408 struct mdp4_kms *mdp4_kms = get_kms(crtc);
409 struct msm_kms *kms = &mdp4_kms->base.base;
410 struct drm_device *dev = crtc->dev;
411 struct drm_gem_object *cursor_bo, *old_bo;
412 unsigned long flags;
413 uint64_t iova;
414 int ret;
415
416 if ((width > CURSOR_WIDTH) || (height > CURSOR_HEIGHT)) {
417 DRM_DEV_ERROR(dev->dev, "bad cursor size: %dx%d\n", width, height);
418 return -EINVAL;
419 }
420
421 if (handle) {
422 cursor_bo = drm_gem_object_lookup(file_priv, handle);
423 if (!cursor_bo)
424 return -ENOENT;
425 } else {
426 cursor_bo = NULL;
427 }
428
429 if (cursor_bo) {
430 ret = msm_gem_get_and_pin_iova(cursor_bo, kms->aspace, &iova);
431 if (ret)
432 goto fail;
433 } else {
434 iova = 0;
435 }
436
437 spin_lock_irqsave(&mdp4_crtc->cursor.lock, flags);
438 old_bo = mdp4_crtc->cursor.next_bo;
439 mdp4_crtc->cursor.next_bo = cursor_bo;
440 mdp4_crtc->cursor.next_iova = iova;
441 mdp4_crtc->cursor.width = width;
442 mdp4_crtc->cursor.height = height;
443 mdp4_crtc->cursor.stale = true;
444 spin_unlock_irqrestore(lock: &mdp4_crtc->cursor.lock, flags);
445
446 if (old_bo) {
447 /* drop our previous reference: */
448 drm_flip_work_queue(work: &mdp4_crtc->unref_cursor_work, val: old_bo);
449 }
450
451 request_pending(crtc, PENDING_CURSOR);
452
453 return 0;
454
455fail:
456 drm_gem_object_put(cursor_bo);
457 return ret;
458}
459
460static int mdp4_crtc_cursor_move(struct drm_crtc *crtc, int x, int y)
461{
462 struct mdp4_crtc *mdp4_crtc = to_mdp4_crtc(crtc);
463 unsigned long flags;
464
465 spin_lock_irqsave(&mdp4_crtc->cursor.lock, flags);
466 mdp4_crtc->cursor.x = x;
467 mdp4_crtc->cursor.y = y;
468 spin_unlock_irqrestore(lock: &mdp4_crtc->cursor.lock, flags);
469
470 crtc_flush(crtc);
471 request_pending(crtc, PENDING_CURSOR);
472
473 return 0;
474}
475
476static const struct drm_crtc_funcs mdp4_crtc_funcs = {
477 .set_config = drm_atomic_helper_set_config,
478 .page_flip = drm_atomic_helper_page_flip,
479 .cursor_set = mdp4_crtc_cursor_set,
480 .cursor_move = mdp4_crtc_cursor_move,
481 .reset = drm_atomic_helper_crtc_reset,
482 .atomic_duplicate_state = drm_atomic_helper_crtc_duplicate_state,
483 .atomic_destroy_state = drm_atomic_helper_crtc_destroy_state,
484 .enable_vblank = msm_crtc_enable_vblank,
485 .disable_vblank = msm_crtc_disable_vblank,
486};
487
488static const struct drm_crtc_helper_funcs mdp4_crtc_helper_funcs = {
489 .mode_set_nofb = mdp4_crtc_mode_set_nofb,
490 .atomic_check = mdp4_crtc_atomic_check,
491 .atomic_begin = mdp4_crtc_atomic_begin,
492 .atomic_flush = mdp4_crtc_atomic_flush,
493 .atomic_enable = mdp4_crtc_atomic_enable,
494 .atomic_disable = mdp4_crtc_atomic_disable,
495};
496
497static void mdp4_crtc_vblank_irq(struct mdp_irq *irq, uint32_t irqstatus)
498{
499 struct mdp4_crtc *mdp4_crtc = container_of(irq, struct mdp4_crtc, vblank);
500 struct drm_crtc *crtc = &mdp4_crtc->base;
501 struct msm_drm_private *priv = crtc->dev->dev_private;
502 unsigned pending;
503
504 mdp_irq_unregister(&get_kms(crtc)->base, &mdp4_crtc->vblank);
505
506 pending = atomic_xchg(v: &mdp4_crtc->pending, new: 0);
507
508 if (pending & PENDING_FLIP) {
509 complete_flip(crtc, NULL);
510 }
511
512 if (pending & PENDING_CURSOR) {
513 update_cursor(crtc);
514 drm_flip_work_commit(work: &mdp4_crtc->unref_cursor_work, wq: priv->wq);
515 }
516}
517
518static void mdp4_crtc_err_irq(struct mdp_irq *irq, uint32_t irqstatus)
519{
520 struct mdp4_crtc *mdp4_crtc = container_of(irq, struct mdp4_crtc, err);
521 struct drm_crtc *crtc = &mdp4_crtc->base;
522 DBG("%s: error: %08x", mdp4_crtc->name, irqstatus);
523 crtc_flush(crtc);
524}
525
526static void mdp4_crtc_wait_for_flush_done(struct drm_crtc *crtc)
527{
528 struct drm_device *dev = crtc->dev;
529 struct mdp4_crtc *mdp4_crtc = to_mdp4_crtc(crtc);
530 struct mdp4_kms *mdp4_kms = get_kms(crtc);
531 int ret;
532
533 ret = drm_crtc_vblank_get(crtc);
534 if (ret)
535 return;
536
537 ret = wait_event_timeout(dev->vblank[drm_crtc_index(crtc)].queue,
538 !(mdp4_read(mdp4_kms, REG_MDP4_OVERLAY_FLUSH) &
539 mdp4_crtc->flushed_mask),
540 msecs_to_jiffies(50));
541 if (ret <= 0)
542 dev_warn(dev->dev, "vblank time out, crtc=%d\n", mdp4_crtc->id);
543
544 mdp4_crtc->flushed_mask = 0;
545
546 drm_crtc_vblank_put(crtc);
547}
548
549uint32_t mdp4_crtc_vblank(struct drm_crtc *crtc)
550{
551 struct mdp4_crtc *mdp4_crtc = to_mdp4_crtc(crtc);
552 return mdp4_crtc->vblank.irqmask;
553}
554
555/* set dma config, ie. the format the encoder wants. */
556void mdp4_crtc_set_config(struct drm_crtc *crtc, uint32_t config)
557{
558 struct mdp4_crtc *mdp4_crtc = to_mdp4_crtc(crtc);
559 struct mdp4_kms *mdp4_kms = get_kms(crtc);
560
561 mdp4_write(mdp4_kms, reg: REG_MDP4_DMA_CONFIG(mdp4_crtc->dma), data: config);
562}
563
564/* set interface for routing crtc->encoder: */
565void mdp4_crtc_set_intf(struct drm_crtc *crtc, enum mdp4_intf intf, int mixer)
566{
567 struct mdp4_crtc *mdp4_crtc = to_mdp4_crtc(crtc);
568 struct mdp4_kms *mdp4_kms = get_kms(crtc);
569 uint32_t intf_sel;
570
571 intf_sel = mdp4_read(mdp4_kms, REG_MDP4_DISP_INTF_SEL);
572
573 switch (mdp4_crtc->dma) {
574 case DMA_P:
575 intf_sel &= ~MDP4_DISP_INTF_SEL_PRIM__MASK;
576 intf_sel |= MDP4_DISP_INTF_SEL_PRIM(intf);
577 break;
578 case DMA_S:
579 intf_sel &= ~MDP4_DISP_INTF_SEL_SEC__MASK;
580 intf_sel |= MDP4_DISP_INTF_SEL_SEC(intf);
581 break;
582 case DMA_E:
583 intf_sel &= ~MDP4_DISP_INTF_SEL_EXT__MASK;
584 intf_sel |= MDP4_DISP_INTF_SEL_EXT(intf);
585 break;
586 }
587
588 if (intf == INTF_DSI_VIDEO) {
589 intf_sel &= ~MDP4_DISP_INTF_SEL_DSI_CMD;
590 intf_sel |= MDP4_DISP_INTF_SEL_DSI_VIDEO;
591 } else if (intf == INTF_DSI_CMD) {
592 intf_sel &= ~MDP4_DISP_INTF_SEL_DSI_VIDEO;
593 intf_sel |= MDP4_DISP_INTF_SEL_DSI_CMD;
594 }
595
596 mdp4_crtc->mixer = mixer;
597
598 blend_setup(crtc);
599
600 DBG("%s: intf_sel=%08x", mdp4_crtc->name, intf_sel);
601
602 mdp4_write(mdp4_kms, REG_MDP4_DISP_INTF_SEL, intf_sel);
603}
604
605void mdp4_crtc_wait_for_commit_done(struct drm_crtc *crtc)
606{
607 /* wait_for_flush_done is the only case for now.
608 * Later we will have command mode CRTC to wait for
609 * other event.
610 */
611 mdp4_crtc_wait_for_flush_done(crtc);
612}
613
614static const char *dma_names[] = {
615 "DMA_P", "DMA_S", "DMA_E",
616};
617
618static void mdp4_crtc_flip_cleanup(struct drm_device *dev, void *ptr)
619{
620 struct mdp4_crtc *mdp4_crtc = ptr;
621
622 drm_flip_work_cleanup(work: &mdp4_crtc->unref_cursor_work);
623}
624
625/* initialize crtc */
626struct drm_crtc *mdp4_crtc_init(struct drm_device *dev,
627 struct drm_plane *plane, int id, int ovlp_id,
628 enum mdp4_dma dma_id)
629{
630 struct drm_crtc *crtc = NULL;
631 struct mdp4_crtc *mdp4_crtc;
632 int ret;
633
634 mdp4_crtc = drmm_crtc_alloc_with_planes(dev, struct mdp4_crtc, base,
635 plane, NULL,
636 &mdp4_crtc_funcs, NULL);
637 if (IS_ERR(ptr: mdp4_crtc))
638 return ERR_CAST(ptr: mdp4_crtc);
639
640 crtc = &mdp4_crtc->base;
641
642 mdp4_crtc->id = id;
643
644 mdp4_crtc->ovlp = ovlp_id;
645 mdp4_crtc->dma = dma_id;
646
647 mdp4_crtc->vblank.irqmask = dma2irq(dma: mdp4_crtc->dma);
648 mdp4_crtc->vblank.irq = mdp4_crtc_vblank_irq;
649
650 mdp4_crtc->err.irqmask = dma2err(dma: mdp4_crtc->dma);
651 mdp4_crtc->err.irq = mdp4_crtc_err_irq;
652
653 snprintf(buf: mdp4_crtc->name, size: sizeof(mdp4_crtc->name), fmt: "%s:%d",
654 dma_names[dma_id], ovlp_id);
655
656 spin_lock_init(&mdp4_crtc->cursor.lock);
657
658 drm_flip_work_init(work: &mdp4_crtc->unref_cursor_work,
659 name: "unref cursor", func: unref_cursor_worker);
660 ret = drmm_add_action_or_reset(dev, mdp4_crtc_flip_cleanup, mdp4_crtc);
661 if (ret)
662 return ERR_PTR(error: ret);
663
664 drm_crtc_helper_add(crtc, &mdp4_crtc_helper_funcs);
665
666 return crtc;
667}
668

source code of linux/drivers/gpu/drm/msm/disp/mdp4/mdp4_crtc.c