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1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * Copyright (C) 2015 Broadcom
4 */
5
6/**
7 * DOC: VC4 plane module
8 *
9 * Each DRM plane is a layer of pixels being scanned out by the HVS.
10 *
11 * At atomic modeset check time, we compute the HVS display element
12 * state that would be necessary for displaying the plane (giving us a
13 * chance to figure out if a plane configuration is invalid), then at
14 * atomic flush time the CRTC will ask us to write our element state
15 * into the region of the HVS that it has allocated for us.
16 */
17
18#include <drm/drm_atomic.h>
19#include <drm/drm_atomic_helper.h>
20#include <drm/drm_atomic_uapi.h>
21#include <drm/drm_blend.h>
22#include <drm/drm_drv.h>
23#include <drm/drm_fb_dma_helper.h>
24#include <drm/drm_fourcc.h>
25#include <drm/drm_framebuffer.h>
26#include <drm/drm_gem_atomic_helper.h>
27
28#include "uapi/drm/vc4_drm.h"
29
30#include "vc4_drv.h"
31#include "vc4_regs.h"
32
33static const struct hvs_format {
34 u32 drm; /* DRM_FORMAT_* */
35 u32 hvs; /* HVS_FORMAT_* */
36 u32 pixel_order;
37 u32 pixel_order_hvs5;
38 bool hvs5_only;
39} hvs_formats[] = {
40 {
41 .drm = DRM_FORMAT_XRGB8888,
42 .hvs = HVS_PIXEL_FORMAT_RGBA8888,
43 .pixel_order = HVS_PIXEL_ORDER_ABGR,
44 .pixel_order_hvs5 = HVS_PIXEL_ORDER_ARGB,
45 },
46 {
47 .drm = DRM_FORMAT_ARGB8888,
48 .hvs = HVS_PIXEL_FORMAT_RGBA8888,
49 .pixel_order = HVS_PIXEL_ORDER_ABGR,
50 .pixel_order_hvs5 = HVS_PIXEL_ORDER_ARGB,
51 },
52 {
53 .drm = DRM_FORMAT_ABGR8888,
54 .hvs = HVS_PIXEL_FORMAT_RGBA8888,
55 .pixel_order = HVS_PIXEL_ORDER_ARGB,
56 .pixel_order_hvs5 = HVS_PIXEL_ORDER_ABGR,
57 },
58 {
59 .drm = DRM_FORMAT_XBGR8888,
60 .hvs = HVS_PIXEL_FORMAT_RGBA8888,
61 .pixel_order = HVS_PIXEL_ORDER_ARGB,
62 .pixel_order_hvs5 = HVS_PIXEL_ORDER_ABGR,
63 },
64 {
65 .drm = DRM_FORMAT_RGB565,
66 .hvs = HVS_PIXEL_FORMAT_RGB565,
67 .pixel_order = HVS_PIXEL_ORDER_XRGB,
68 .pixel_order_hvs5 = HVS_PIXEL_ORDER_XRGB,
69 },
70 {
71 .drm = DRM_FORMAT_BGR565,
72 .hvs = HVS_PIXEL_FORMAT_RGB565,
73 .pixel_order = HVS_PIXEL_ORDER_XBGR,
74 .pixel_order_hvs5 = HVS_PIXEL_ORDER_XBGR,
75 },
76 {
77 .drm = DRM_FORMAT_ARGB1555,
78 .hvs = HVS_PIXEL_FORMAT_RGBA5551,
79 .pixel_order = HVS_PIXEL_ORDER_ABGR,
80 .pixel_order_hvs5 = HVS_PIXEL_ORDER_ARGB,
81 },
82 {
83 .drm = DRM_FORMAT_XRGB1555,
84 .hvs = HVS_PIXEL_FORMAT_RGBA5551,
85 .pixel_order = HVS_PIXEL_ORDER_ABGR,
86 .pixel_order_hvs5 = HVS_PIXEL_ORDER_ARGB,
87 },
88 {
89 .drm = DRM_FORMAT_RGB888,
90 .hvs = HVS_PIXEL_FORMAT_RGB888,
91 .pixel_order = HVS_PIXEL_ORDER_XRGB,
92 .pixel_order_hvs5 = HVS_PIXEL_ORDER_XRGB,
93 },
94 {
95 .drm = DRM_FORMAT_BGR888,
96 .hvs = HVS_PIXEL_FORMAT_RGB888,
97 .pixel_order = HVS_PIXEL_ORDER_XBGR,
98 .pixel_order_hvs5 = HVS_PIXEL_ORDER_XBGR,
99 },
100 {
101 .drm = DRM_FORMAT_YUV422,
102 .hvs = HVS_PIXEL_FORMAT_YCBCR_YUV422_3PLANE,
103 .pixel_order = HVS_PIXEL_ORDER_XYCBCR,
104 .pixel_order_hvs5 = HVS_PIXEL_ORDER_XYCBCR,
105 },
106 {
107 .drm = DRM_FORMAT_YVU422,
108 .hvs = HVS_PIXEL_FORMAT_YCBCR_YUV422_3PLANE,
109 .pixel_order = HVS_PIXEL_ORDER_XYCRCB,
110 .pixel_order_hvs5 = HVS_PIXEL_ORDER_XYCRCB,
111 },
112 {
113 .drm = DRM_FORMAT_YUV420,
114 .hvs = HVS_PIXEL_FORMAT_YCBCR_YUV420_3PLANE,
115 .pixel_order = HVS_PIXEL_ORDER_XYCBCR,
116 .pixel_order_hvs5 = HVS_PIXEL_ORDER_XYCBCR,
117 },
118 {
119 .drm = DRM_FORMAT_YVU420,
120 .hvs = HVS_PIXEL_FORMAT_YCBCR_YUV420_3PLANE,
121 .pixel_order = HVS_PIXEL_ORDER_XYCRCB,
122 .pixel_order_hvs5 = HVS_PIXEL_ORDER_XYCRCB,
123 },
124 {
125 .drm = DRM_FORMAT_NV12,
126 .hvs = HVS_PIXEL_FORMAT_YCBCR_YUV420_2PLANE,
127 .pixel_order = HVS_PIXEL_ORDER_XYCBCR,
128 .pixel_order_hvs5 = HVS_PIXEL_ORDER_XYCBCR,
129 },
130 {
131 .drm = DRM_FORMAT_NV21,
132 .hvs = HVS_PIXEL_FORMAT_YCBCR_YUV420_2PLANE,
133 .pixel_order = HVS_PIXEL_ORDER_XYCRCB,
134 .pixel_order_hvs5 = HVS_PIXEL_ORDER_XYCRCB,
135 },
136 {
137 .drm = DRM_FORMAT_NV16,
138 .hvs = HVS_PIXEL_FORMAT_YCBCR_YUV422_2PLANE,
139 .pixel_order = HVS_PIXEL_ORDER_XYCBCR,
140 .pixel_order_hvs5 = HVS_PIXEL_ORDER_XYCBCR,
141 },
142 {
143 .drm = DRM_FORMAT_NV61,
144 .hvs = HVS_PIXEL_FORMAT_YCBCR_YUV422_2PLANE,
145 .pixel_order = HVS_PIXEL_ORDER_XYCRCB,
146 .pixel_order_hvs5 = HVS_PIXEL_ORDER_XYCRCB,
147 },
148 {
149 .drm = DRM_FORMAT_P030,
150 .hvs = HVS_PIXEL_FORMAT_YCBCR_10BIT,
151 .pixel_order_hvs5 = HVS_PIXEL_ORDER_XYCBCR,
152 .hvs5_only = true,
153 },
154 {
155 .drm = DRM_FORMAT_XRGB2101010,
156 .hvs = HVS_PIXEL_FORMAT_RGBA1010102,
157 .pixel_order_hvs5 = HVS_PIXEL_ORDER_ARGB,
158 .hvs5_only = true,
159 },
160 {
161 .drm = DRM_FORMAT_ARGB2101010,
162 .hvs = HVS_PIXEL_FORMAT_RGBA1010102,
163 .pixel_order_hvs5 = HVS_PIXEL_ORDER_ARGB,
164 .hvs5_only = true,
165 },
166 {
167 .drm = DRM_FORMAT_ABGR2101010,
168 .hvs = HVS_PIXEL_FORMAT_RGBA1010102,
169 .pixel_order_hvs5 = HVS_PIXEL_ORDER_ABGR,
170 .hvs5_only = true,
171 },
172 {
173 .drm = DRM_FORMAT_XBGR2101010,
174 .hvs = HVS_PIXEL_FORMAT_RGBA1010102,
175 .pixel_order_hvs5 = HVS_PIXEL_ORDER_ABGR,
176 .hvs5_only = true,
177 },
178 {
179 .drm = DRM_FORMAT_RGB332,
180 .hvs = HVS_PIXEL_FORMAT_RGB332,
181 .pixel_order = HVS_PIXEL_ORDER_ARGB,
182 .pixel_order_hvs5 = HVS_PIXEL_ORDER_ARGB,
183 },
184 {
185 .drm = DRM_FORMAT_BGR233,
186 .hvs = HVS_PIXEL_FORMAT_RGB332,
187 .pixel_order = HVS_PIXEL_ORDER_ABGR,
188 .pixel_order_hvs5 = HVS_PIXEL_ORDER_ABGR,
189 },
190 {
191 .drm = DRM_FORMAT_XRGB4444,
192 .hvs = HVS_PIXEL_FORMAT_RGBA4444,
193 .pixel_order = HVS_PIXEL_ORDER_ABGR,
194 .pixel_order_hvs5 = HVS_PIXEL_ORDER_ARGB,
195 },
196 {
197 .drm = DRM_FORMAT_ARGB4444,
198 .hvs = HVS_PIXEL_FORMAT_RGBA4444,
199 .pixel_order = HVS_PIXEL_ORDER_ABGR,
200 .pixel_order_hvs5 = HVS_PIXEL_ORDER_ARGB,
201 },
202 {
203 .drm = DRM_FORMAT_XBGR4444,
204 .hvs = HVS_PIXEL_FORMAT_RGBA4444,
205 .pixel_order = HVS_PIXEL_ORDER_ARGB,
206 .pixel_order_hvs5 = HVS_PIXEL_ORDER_ABGR,
207 },
208 {
209 .drm = DRM_FORMAT_ABGR4444,
210 .hvs = HVS_PIXEL_FORMAT_RGBA4444,
211 .pixel_order = HVS_PIXEL_ORDER_ARGB,
212 .pixel_order_hvs5 = HVS_PIXEL_ORDER_ABGR,
213 },
214 {
215 .drm = DRM_FORMAT_BGRX4444,
216 .hvs = HVS_PIXEL_FORMAT_RGBA4444,
217 .pixel_order = HVS_PIXEL_ORDER_RGBA,
218 .pixel_order_hvs5 = HVS_PIXEL_ORDER_BGRA,
219 },
220 {
221 .drm = DRM_FORMAT_BGRA4444,
222 .hvs = HVS_PIXEL_FORMAT_RGBA4444,
223 .pixel_order = HVS_PIXEL_ORDER_RGBA,
224 .pixel_order_hvs5 = HVS_PIXEL_ORDER_BGRA,
225 },
226 {
227 .drm = DRM_FORMAT_RGBX4444,
228 .hvs = HVS_PIXEL_FORMAT_RGBA4444,
229 .pixel_order = HVS_PIXEL_ORDER_BGRA,
230 .pixel_order_hvs5 = HVS_PIXEL_ORDER_RGBA,
231 },
232 {
233 .drm = DRM_FORMAT_RGBA4444,
234 .hvs = HVS_PIXEL_FORMAT_RGBA4444,
235 .pixel_order = HVS_PIXEL_ORDER_BGRA,
236 .pixel_order_hvs5 = HVS_PIXEL_ORDER_RGBA,
237 },
238};
239
240static const struct hvs_format *vc4_get_hvs_format(u32 drm_format)
241{
242 unsigned i;
243
244 for (i = 0; i < ARRAY_SIZE(hvs_formats); i++) {
245 if (hvs_formats[i].drm == drm_format)
246 return &hvs_formats[i];
247 }
248
249 return NULL;
250}
251
252static enum vc4_scaling_mode vc4_get_scaling_mode(u32 src, u32 dst)
253{
254 if (dst == src)
255 return VC4_SCALING_NONE;
256 if (3 * dst >= 2 * src)
257 return VC4_SCALING_PPF;
258 else
259 return VC4_SCALING_TPZ;
260}
261
262static bool plane_enabled(struct drm_plane_state *state)
263{
264 return state->fb && !WARN_ON(!state->crtc);
265}
266
267static struct drm_plane_state *vc4_plane_duplicate_state(struct drm_plane *plane)
268{
269 struct vc4_plane_state *vc4_state;
270
271 if (WARN_ON(!plane->state))
272 return NULL;
273
274 vc4_state = kmemdup(plane->state, sizeof(*vc4_state), GFP_KERNEL);
275 if (!vc4_state)
276 return NULL;
277
278 memset(&vc4_state->lbm, 0, sizeof(vc4_state->lbm));
279 vc4_state->dlist_initialized = 0;
280
281 __drm_atomic_helper_plane_duplicate_state(plane, &vc4_state->base);
282
283 if (vc4_state->dlist) {
284 vc4_state->dlist = kmemdup(vc4_state->dlist,
285 vc4_state->dlist_count * 4,
286 GFP_KERNEL);
287 if (!vc4_state->dlist) {
288 kfree(vc4_state);
289 return NULL;
290 }
291 vc4_state->dlist_size = vc4_state->dlist_count;
292 }
293
294 return &vc4_state->base;
295}
296
297static void vc4_plane_destroy_state(struct drm_plane *plane,
298 struct drm_plane_state *state)
299{
300 struct vc4_dev *vc4 = to_vc4_dev(plane->dev);
301 struct vc4_plane_state *vc4_state = to_vc4_plane_state(state);
302
303 if (drm_mm_node_allocated(&vc4_state->lbm)) {
304 unsigned long irqflags;
305
306 spin_lock_irqsave(&vc4->hvs->mm_lock, irqflags);
307 drm_mm_remove_node(&vc4_state->lbm);
308 spin_unlock_irqrestore(&vc4->hvs->mm_lock, irqflags);
309 }
310
311 kfree(vc4_state->dlist);
312 __drm_atomic_helper_plane_destroy_state(&vc4_state->base);
313 kfree(state);
314}
315
316/* Called during init to allocate the plane's atomic state. */
317static void vc4_plane_reset(struct drm_plane *plane)
318{
319 struct vc4_plane_state *vc4_state;
320
321 WARN_ON(plane->state);
322
323 vc4_state = kzalloc(sizeof(*vc4_state), GFP_KERNEL);
324 if (!vc4_state)
325 return;
326
327 __drm_atomic_helper_plane_reset(plane, &vc4_state->base);
328}
329
330static void vc4_dlist_counter_increment(struct vc4_plane_state *vc4_state)
331{
332 if (vc4_state->dlist_count == vc4_state->dlist_size) {
333 u32 new_size = max(4u, vc4_state->dlist_count * 2);
334 u32 *new_dlist = kmalloc_array(new_size, 4, GFP_KERNEL);
335
336 if (!new_dlist)
337 return;
338 memcpy(new_dlist, vc4_state->dlist, vc4_state->dlist_count * 4);
339
340 kfree(vc4_state->dlist);
341 vc4_state->dlist = new_dlist;
342 vc4_state->dlist_size = new_size;
343 }
344
345 vc4_state->dlist_count++;
346}
347
348static void vc4_dlist_write(struct vc4_plane_state *vc4_state, u32 val)
349{
350 unsigned int idx = vc4_state->dlist_count;
351
352 vc4_dlist_counter_increment(vc4_state);
353 vc4_state->dlist[idx] = val;
354}
355
356/* Returns the scl0/scl1 field based on whether the dimensions need to
357 * be up/down/non-scaled.
358 *
359 * This is a replication of a table from the spec.
360 */
361static u32 vc4_get_scl_field(struct drm_plane_state *state, int plane)
362{
363 struct vc4_plane_state *vc4_state = to_vc4_plane_state(state);
364
365 switch (vc4_state->x_scaling[plane] << 2 | vc4_state->y_scaling[plane]) {
366 case VC4_SCALING_PPF << 2 | VC4_SCALING_PPF:
367 return SCALER_CTL0_SCL_H_PPF_V_PPF;
368 case VC4_SCALING_TPZ << 2 | VC4_SCALING_PPF:
369 return SCALER_CTL0_SCL_H_TPZ_V_PPF;
370 case VC4_SCALING_PPF << 2 | VC4_SCALING_TPZ:
371 return SCALER_CTL0_SCL_H_PPF_V_TPZ;
372 case VC4_SCALING_TPZ << 2 | VC4_SCALING_TPZ:
373 return SCALER_CTL0_SCL_H_TPZ_V_TPZ;
374 case VC4_SCALING_PPF << 2 | VC4_SCALING_NONE:
375 return SCALER_CTL0_SCL_H_PPF_V_NONE;
376 case VC4_SCALING_NONE << 2 | VC4_SCALING_PPF:
377 return SCALER_CTL0_SCL_H_NONE_V_PPF;
378 case VC4_SCALING_NONE << 2 | VC4_SCALING_TPZ:
379 return SCALER_CTL0_SCL_H_NONE_V_TPZ;
380 case VC4_SCALING_TPZ << 2 | VC4_SCALING_NONE:
381 return SCALER_CTL0_SCL_H_TPZ_V_NONE;
382 default:
383 case VC4_SCALING_NONE << 2 | VC4_SCALING_NONE:
384 /* The unity case is independently handled by
385 * SCALER_CTL0_UNITY.
386 */
387 return 0;
388 }
389}
390
391static int vc4_plane_margins_adj(struct drm_plane_state *pstate)
392{
393 struct vc4_plane_state *vc4_pstate = to_vc4_plane_state(pstate);
394 unsigned int left, right, top, bottom, adjhdisplay, adjvdisplay;
395 struct drm_crtc_state *crtc_state;
396
397 crtc_state = drm_atomic_get_new_crtc_state(pstate->state,
398 pstate->crtc);
399
400 vc4_crtc_get_margins(crtc_state, &left, &right, &top, &bottom);
401 if (!left && !right && !top && !bottom)
402 return 0;
403
404 if (left + right >= crtc_state->mode.hdisplay ||
405 top + bottom >= crtc_state->mode.vdisplay)
406 return -EINVAL;
407
408 adjhdisplay = crtc_state->mode.hdisplay - (left + right);
409 vc4_pstate->crtc_x = DIV_ROUND_CLOSEST(vc4_pstate->crtc_x *
410 adjhdisplay,
411 crtc_state->mode.hdisplay);
412 vc4_pstate->crtc_x += left;
413 if (vc4_pstate->crtc_x > crtc_state->mode.hdisplay - right)
414 vc4_pstate->crtc_x = crtc_state->mode.hdisplay - right;
415
416 adjvdisplay = crtc_state->mode.vdisplay - (top + bottom);
417 vc4_pstate->crtc_y = DIV_ROUND_CLOSEST(vc4_pstate->crtc_y *
418 adjvdisplay,
419 crtc_state->mode.vdisplay);
420 vc4_pstate->crtc_y += top;
421 if (vc4_pstate->crtc_y > crtc_state->mode.vdisplay - bottom)
422 vc4_pstate->crtc_y = crtc_state->mode.vdisplay - bottom;
423
424 vc4_pstate->crtc_w = DIV_ROUND_CLOSEST(vc4_pstate->crtc_w *
425 adjhdisplay,
426 crtc_state->mode.hdisplay);
427 vc4_pstate->crtc_h = DIV_ROUND_CLOSEST(vc4_pstate->crtc_h *
428 adjvdisplay,
429 crtc_state->mode.vdisplay);
430
431 if (!vc4_pstate->crtc_w || !vc4_pstate->crtc_h)
432 return -EINVAL;
433
434 return 0;
435}
436
437static int vc4_plane_setup_clipping_and_scaling(struct drm_plane_state *state)
438{
439 struct vc4_plane_state *vc4_state = to_vc4_plane_state(state);
440 struct drm_framebuffer *fb = state->fb;
441 struct drm_gem_dma_object *bo;
442 int num_planes = fb->format->num_planes;
443 struct drm_crtc_state *crtc_state;
444 u32 h_subsample = fb->format->hsub;
445 u32 v_subsample = fb->format->vsub;
446 int i, ret;
447
448 crtc_state = drm_atomic_get_existing_crtc_state(state->state,
449 state->crtc);
450 if (!crtc_state) {
451 DRM_DEBUG_KMS("Invalid crtc state\n");
452 return -EINVAL;
453 }
454
455 ret = drm_atomic_helper_check_plane_state(state, crtc_state, 1,
456 INT_MAX, true, true);
457 if (ret)
458 return ret;
459
460 for (i = 0; i < num_planes; i++) {
461 bo = drm_fb_dma_get_gem_obj(fb, i);
462 vc4_state->offsets[i] = bo->dma_addr + fb->offsets[i];
463 }
464
465 /*
466 * We don't support subpixel source positioning for scaling,
467 * but fractional coordinates can be generated by clipping
468 * so just round for now
469 */
470 vc4_state->src_x = DIV_ROUND_CLOSEST(state->src.x1, 1 << 16);
471 vc4_state->src_y = DIV_ROUND_CLOSEST(state->src.y1, 1 << 16);
472 vc4_state->src_w[0] = DIV_ROUND_CLOSEST(state->src.x2, 1 << 16) - vc4_state->src_x;
473 vc4_state->src_h[0] = DIV_ROUND_CLOSEST(state->src.y2, 1 << 16) - vc4_state->src_y;
474
475 vc4_state->crtc_x = state->dst.x1;
476 vc4_state->crtc_y = state->dst.y1;
477 vc4_state->crtc_w = state->dst.x2 - state->dst.x1;
478 vc4_state->crtc_h = state->dst.y2 - state->dst.y1;
479
480 ret = vc4_plane_margins_adj(state);
481 if (ret)
482 return ret;
483
484 vc4_state->x_scaling[0] = vc4_get_scaling_mode(vc4_state->src_w[0],
485 vc4_state->crtc_w);
486 vc4_state->y_scaling[0] = vc4_get_scaling_mode(vc4_state->src_h[0],
487 vc4_state->crtc_h);
488
489 vc4_state->is_unity = (vc4_state->x_scaling[0] == VC4_SCALING_NONE &&
490 vc4_state->y_scaling[0] == VC4_SCALING_NONE);
491
492 if (num_planes > 1) {
493 vc4_state->is_yuv = true;
494
495 vc4_state->src_w[1] = vc4_state->src_w[0] / h_subsample;
496 vc4_state->src_h[1] = vc4_state->src_h[0] / v_subsample;
497
498 vc4_state->x_scaling[1] =
499 vc4_get_scaling_mode(vc4_state->src_w[1],
500 vc4_state->crtc_w);
501 vc4_state->y_scaling[1] =
502 vc4_get_scaling_mode(vc4_state->src_h[1],
503 vc4_state->crtc_h);
504
505 /* YUV conversion requires that horizontal scaling be enabled
506 * on the UV plane even if vc4_get_scaling_mode() returned
507 * VC4_SCALING_NONE (which can happen when the down-scaling
508 * ratio is 0.5). Let's force it to VC4_SCALING_PPF in this
509 * case.
510 */
511 if (vc4_state->x_scaling[1] == VC4_SCALING_NONE)
512 vc4_state->x_scaling[1] = VC4_SCALING_PPF;
513 } else {
514 vc4_state->is_yuv = false;
515 vc4_state->x_scaling[1] = VC4_SCALING_NONE;
516 vc4_state->y_scaling[1] = VC4_SCALING_NONE;
517 }
518
519 return 0;
520}
521
522static void vc4_write_tpz(struct vc4_plane_state *vc4_state, u32 src, u32 dst)
523{
524 u32 scale, recip;
525
526 scale = (1 << 16) * src / dst;
527
528 /* The specs note that while the reciprocal would be defined
529 * as (1<<32)/scale, ~0 is close enough.
530 */
531 recip = ~0 / scale;
532
533 vc4_dlist_write(vc4_state,
534 VC4_SET_FIELD(scale, SCALER_TPZ0_SCALE) |
535 VC4_SET_FIELD(0, SCALER_TPZ0_IPHASE));
536 vc4_dlist_write(vc4_state,
537 VC4_SET_FIELD(recip, SCALER_TPZ1_RECIP));
538}
539
540static void vc4_write_ppf(struct vc4_plane_state *vc4_state, u32 src, u32 dst)
541{
542 u32 scale = (1 << 16) * src / dst;
543
544 vc4_dlist_write(vc4_state,
545 SCALER_PPF_AGC |
546 VC4_SET_FIELD(scale, SCALER_PPF_SCALE) |
547 VC4_SET_FIELD(0, SCALER_PPF_IPHASE));
548}
549
550static u32 vc4_lbm_size(struct drm_plane_state *state)
551{
552 struct vc4_plane_state *vc4_state = to_vc4_plane_state(state);
553 struct vc4_dev *vc4 = to_vc4_dev(state->plane->dev);
554 u32 pix_per_line;
555 u32 lbm;
556
557 /* LBM is not needed when there's no vertical scaling. */
558 if (vc4_state->y_scaling[0] == VC4_SCALING_NONE &&
559 vc4_state->y_scaling[1] == VC4_SCALING_NONE)
560 return 0;
561
562 /*
563 * This can be further optimized in the RGB/YUV444 case if the PPF
564 * decimation factor is between 0.5 and 1.0 by using crtc_w.
565 *
566 * It's not an issue though, since in that case since src_w[0] is going
567 * to be greater than or equal to crtc_w.
568 */
569 if (vc4_state->x_scaling[0] == VC4_SCALING_TPZ)
570 pix_per_line = vc4_state->crtc_w;
571 else
572 pix_per_line = vc4_state->src_w[0];
573
574 if (!vc4_state->is_yuv) {
575 if (vc4_state->y_scaling[0] == VC4_SCALING_TPZ)
576 lbm = pix_per_line * 8;
577 else {
578 /* In special cases, this multiplier might be 12. */
579 lbm = pix_per_line * 16;
580 }
581 } else {
582 /* There are cases for this going down to a multiplier
583 * of 2, but according to the firmware source, the
584 * table in the docs is somewhat wrong.
585 */
586 lbm = pix_per_line * 16;
587 }
588
589 /* Align it to 64 or 128 (hvs5) bytes */
590 lbm = roundup(lbm, vc4->is_vc5 ? 128 : 64);
591
592 /* Each "word" of the LBM memory contains 2 or 4 (hvs5) pixels */
593 lbm /= vc4->is_vc5 ? 4 : 2;
594
595 return lbm;
596}
597
598static void vc4_write_scaling_parameters(struct drm_plane_state *state,
599 int channel)
600{
601 struct vc4_plane_state *vc4_state = to_vc4_plane_state(state);
602
603 /* Ch0 H-PPF Word 0: Scaling Parameters */
604 if (vc4_state->x_scaling[channel] == VC4_SCALING_PPF) {
605 vc4_write_ppf(vc4_state,
606 vc4_state->src_w[channel], vc4_state->crtc_w);
607 }
608
609 /* Ch0 V-PPF Words 0-1: Scaling Parameters, Context */
610 if (vc4_state->y_scaling[channel] == VC4_SCALING_PPF) {
611 vc4_write_ppf(vc4_state,
612 vc4_state->src_h[channel], vc4_state->crtc_h);
613 vc4_dlist_write(vc4_state, 0xc0c0c0c0);
614 }
615
616 /* Ch0 H-TPZ Words 0-1: Scaling Parameters, Recip */
617 if (vc4_state->x_scaling[channel] == VC4_SCALING_TPZ) {
618 vc4_write_tpz(vc4_state,
619 vc4_state->src_w[channel], vc4_state->crtc_w);
620 }
621
622 /* Ch0 V-TPZ Words 0-2: Scaling Parameters, Recip, Context */
623 if (vc4_state->y_scaling[channel] == VC4_SCALING_TPZ) {
624 vc4_write_tpz(vc4_state,
625 vc4_state->src_h[channel], vc4_state->crtc_h);
626 vc4_dlist_write(vc4_state, 0xc0c0c0c0);
627 }
628}
629
630static void vc4_plane_calc_load(struct drm_plane_state *state)
631{
632 unsigned int hvs_load_shift, vrefresh, i;
633 struct drm_framebuffer *fb = state->fb;
634 struct vc4_plane_state *vc4_state;
635 struct drm_crtc_state *crtc_state;
636 unsigned int vscale_factor;
637
638 vc4_state = to_vc4_plane_state(state);
639 crtc_state = drm_atomic_get_existing_crtc_state(state->state,
640 state->crtc);
641 vrefresh = drm_mode_vrefresh(&crtc_state->adjusted_mode);
642
643 /* The HVS is able to process 2 pixels/cycle when scaling the source,
644 * 4 pixels/cycle otherwise.
645 * Alpha blending step seems to be pipelined and it's always operating
646 * at 4 pixels/cycle, so the limiting aspect here seems to be the
647 * scaler block.
648 * HVS load is expressed in clk-cycles/sec (AKA Hz).
649 */
650 if (vc4_state->x_scaling[0] != VC4_SCALING_NONE ||
651 vc4_state->x_scaling[1] != VC4_SCALING_NONE ||
652 vc4_state->y_scaling[0] != VC4_SCALING_NONE ||
653 vc4_state->y_scaling[1] != VC4_SCALING_NONE)
654 hvs_load_shift = 1;
655 else
656 hvs_load_shift = 2;
657
658 vc4_state->membus_load = 0;
659 vc4_state->hvs_load = 0;
660 for (i = 0; i < fb->format->num_planes; i++) {
661 /* Even if the bandwidth/plane required for a single frame is
662 *
663 * vc4_state->src_w[i] * vc4_state->src_h[i] * cpp * vrefresh
664 *
665 * when downscaling, we have to read more pixels per line in
666 * the time frame reserved for a single line, so the bandwidth
667 * demand can be punctually higher. To account for that, we
668 * calculate the down-scaling factor and multiply the plane
669 * load by this number. We're likely over-estimating the read
670 * demand, but that's better than under-estimating it.
671 */
672 vscale_factor = DIV_ROUND_UP(vc4_state->src_h[i],
673 vc4_state->crtc_h);
674 vc4_state->membus_load += vc4_state->src_w[i] *
675 vc4_state->src_h[i] * vscale_factor *
676 fb->format->cpp[i];
677 vc4_state->hvs_load += vc4_state->crtc_h * vc4_state->crtc_w;
678 }
679
680 vc4_state->hvs_load *= vrefresh;
681 vc4_state->hvs_load >>= hvs_load_shift;
682 vc4_state->membus_load *= vrefresh;
683}
684
685static int vc4_plane_allocate_lbm(struct drm_plane_state *state)
686{
687 struct vc4_dev *vc4 = to_vc4_dev(state->plane->dev);
688 struct vc4_plane_state *vc4_state = to_vc4_plane_state(state);
689 unsigned long irqflags;
690 u32 lbm_size;
691
692 lbm_size = vc4_lbm_size(state);
693 if (!lbm_size)
694 return 0;
695
696 if (WARN_ON(!vc4_state->lbm_offset))
697 return -EINVAL;
698
699 /* Allocate the LBM memory that the HVS will use for temporary
700 * storage due to our scaling/format conversion.
701 */
702 if (!drm_mm_node_allocated(&vc4_state->lbm)) {
703 int ret;
704
705 spin_lock_irqsave(&vc4->hvs->mm_lock, irqflags);
706 ret = drm_mm_insert_node_generic(&vc4->hvs->lbm_mm,
707 &vc4_state->lbm,
708 lbm_size,
709 vc4->is_vc5 ? 64 : 32,
710 0, 0);
711 spin_unlock_irqrestore(&vc4->hvs->mm_lock, irqflags);
712
713 if (ret)
714 return ret;
715 } else {
716 WARN_ON_ONCE(lbm_size != vc4_state->lbm.size);
717 }
718
719 vc4_state->dlist[vc4_state->lbm_offset] = vc4_state->lbm.start;
720
721 return 0;
722}
723
724/*
725 * The colorspace conversion matrices are held in 3 entries in the dlist.
726 * Create an array of them, with entries for each full and limited mode, and
727 * each supported colorspace.
728 */
729static const u32 colorspace_coeffs[2][DRM_COLOR_ENCODING_MAX][3] = {
730 {
731 /* Limited range */
732 {
733 /* BT601 */
734 SCALER_CSC0_ITR_R_601_5,
735 SCALER_CSC1_ITR_R_601_5,
736 SCALER_CSC2_ITR_R_601_5,
737 }, {
738 /* BT709 */
739 SCALER_CSC0_ITR_R_709_3,
740 SCALER_CSC1_ITR_R_709_3,
741 SCALER_CSC2_ITR_R_709_3,
742 }, {
743 /* BT2020 */
744 SCALER_CSC0_ITR_R_2020,
745 SCALER_CSC1_ITR_R_2020,
746 SCALER_CSC2_ITR_R_2020,
747 }
748 }, {
749 /* Full range */
750 {
751 /* JFIF */
752 SCALER_CSC0_JPEG_JFIF,
753 SCALER_CSC1_JPEG_JFIF,
754 SCALER_CSC2_JPEG_JFIF,
755 }, {
756 /* BT709 */
757 SCALER_CSC0_ITR_R_709_3_FR,
758 SCALER_CSC1_ITR_R_709_3_FR,
759 SCALER_CSC2_ITR_R_709_3_FR,
760 }, {
761 /* BT2020 */
762 SCALER_CSC0_ITR_R_2020_FR,
763 SCALER_CSC1_ITR_R_2020_FR,
764 SCALER_CSC2_ITR_R_2020_FR,
765 }
766 }
767};
768
769static u32 vc4_hvs4_get_alpha_blend_mode(struct drm_plane_state *state)
770{
771 if (!state->fb->format->has_alpha)
772 return VC4_SET_FIELD(SCALER_POS2_ALPHA_MODE_FIXED,
773 SCALER_POS2_ALPHA_MODE);
774
775 switch (state->pixel_blend_mode) {
776 case DRM_MODE_BLEND_PIXEL_NONE:
777 return VC4_SET_FIELD(SCALER_POS2_ALPHA_MODE_FIXED,
778 SCALER_POS2_ALPHA_MODE);
779 default:
780 case DRM_MODE_BLEND_PREMULTI:
781 return VC4_SET_FIELD(SCALER_POS2_ALPHA_MODE_PIPELINE,
782 SCALER_POS2_ALPHA_MODE) |
783 SCALER_POS2_ALPHA_PREMULT;
784 case DRM_MODE_BLEND_COVERAGE:
785 return VC4_SET_FIELD(SCALER_POS2_ALPHA_MODE_PIPELINE,
786 SCALER_POS2_ALPHA_MODE);
787 }
788}
789
790static u32 vc4_hvs5_get_alpha_blend_mode(struct drm_plane_state *state)
791{
792 if (!state->fb->format->has_alpha)
793 return VC4_SET_FIELD(SCALER5_CTL2_ALPHA_MODE_FIXED,
794 SCALER5_CTL2_ALPHA_MODE);
795
796 switch (state->pixel_blend_mode) {
797 case DRM_MODE_BLEND_PIXEL_NONE:
798 return VC4_SET_FIELD(SCALER5_CTL2_ALPHA_MODE_FIXED,
799 SCALER5_CTL2_ALPHA_MODE);
800 default:
801 case DRM_MODE_BLEND_PREMULTI:
802 return VC4_SET_FIELD(SCALER5_CTL2_ALPHA_MODE_PIPELINE,
803 SCALER5_CTL2_ALPHA_MODE) |
804 SCALER5_CTL2_ALPHA_PREMULT;
805 case DRM_MODE_BLEND_COVERAGE:
806 return VC4_SET_FIELD(SCALER5_CTL2_ALPHA_MODE_PIPELINE,
807 SCALER5_CTL2_ALPHA_MODE);
808 }
809}
810
811/* Writes out a full display list for an active plane to the plane's
812 * private dlist state.
813 */
814static int vc4_plane_mode_set(struct drm_plane *plane,
815 struct drm_plane_state *state)
816{
817 struct vc4_dev *vc4 = to_vc4_dev(plane->dev);
818 struct vc4_plane_state *vc4_state = to_vc4_plane_state(state);
819 struct drm_framebuffer *fb = state->fb;
820 u32 ctl0_offset = vc4_state->dlist_count;
821 const struct hvs_format *format = vc4_get_hvs_format(fb->format->format);
822 u64 base_format_mod = fourcc_mod_broadcom_mod(fb->modifier);
823 int num_planes = fb->format->num_planes;
824 u32 h_subsample = fb->format->hsub;
825 u32 v_subsample = fb->format->vsub;
826 bool mix_plane_alpha;
827 bool covers_screen;
828 u32 scl0, scl1, pitch0;
829 u32 tiling, src_y;
830 u32 hvs_format = format->hvs;
831 unsigned int rotation;
832 int ret, i;
833
834 if (vc4_state->dlist_initialized)
835 return 0;
836
837 ret = vc4_plane_setup_clipping_and_scaling(state);
838 if (ret)
839 return ret;
840
841 /* SCL1 is used for Cb/Cr scaling of planar formats. For RGB
842 * and 4:4:4, scl1 should be set to scl0 so both channels of
843 * the scaler do the same thing. For YUV, the Y plane needs
844 * to be put in channel 1 and Cb/Cr in channel 0, so we swap
845 * the scl fields here.
846 */
847 if (num_planes == 1) {
848 scl0 = vc4_get_scl_field(state, 0);
849 scl1 = scl0;
850 } else {
851 scl0 = vc4_get_scl_field(state, 1);
852 scl1 = vc4_get_scl_field(state, 0);
853 }
854
855 rotation = drm_rotation_simplify(state->rotation,
856 DRM_MODE_ROTATE_0 |
857 DRM_MODE_REFLECT_X |
858 DRM_MODE_REFLECT_Y);
859
860 /* We must point to the last line when Y reflection is enabled. */
861 src_y = vc4_state->src_y;
862 if (rotation & DRM_MODE_REFLECT_Y)
863 src_y += vc4_state->src_h[0] - 1;
864
865 switch (base_format_mod) {
866 case DRM_FORMAT_MOD_LINEAR:
867 tiling = SCALER_CTL0_TILING_LINEAR;
868 pitch0 = VC4_SET_FIELD(fb->pitches[0], SCALER_SRC_PITCH);
869
870 /* Adjust the base pointer to the first pixel to be scanned
871 * out.
872 */
873 for (i = 0; i < num_planes; i++) {
874 vc4_state->offsets[i] += src_y /
875 (i ? v_subsample : 1) *
876 fb->pitches[i];
877
878 vc4_state->offsets[i] += vc4_state->src_x /
879 (i ? h_subsample : 1) *
880 fb->format->cpp[i];
881 }
882
883 break;
884
885 case DRM_FORMAT_MOD_BROADCOM_VC4_T_TILED: {
886 u32 tile_size_shift = 12; /* T tiles are 4kb */
887 /* Whole-tile offsets, mostly for setting the pitch. */
888 u32 tile_w_shift = fb->format->cpp[0] == 2 ? 6 : 5;
889 u32 tile_h_shift = 5; /* 16 and 32bpp are 32 pixels high */
890 u32 tile_w_mask = (1 << tile_w_shift) - 1;
891 /* The height mask on 32-bit-per-pixel tiles is 63, i.e. twice
892 * the height (in pixels) of a 4k tile.
893 */
894 u32 tile_h_mask = (2 << tile_h_shift) - 1;
895 /* For T-tiled, the FB pitch is "how many bytes from one row to
896 * the next, such that
897 *
898 * pitch * tile_h == tile_size * tiles_per_row
899 */
900 u32 tiles_w = fb->pitches[0] >> (tile_size_shift - tile_h_shift);
901 u32 tiles_l = vc4_state->src_x >> tile_w_shift;
902 u32 tiles_r = tiles_w - tiles_l;
903 u32 tiles_t = src_y >> tile_h_shift;
904 /* Intra-tile offsets, which modify the base address (the
905 * SCALER_PITCH0_TILE_Y_OFFSET tells HVS how to walk from that
906 * base address).
907 */
908 u32 tile_y = (src_y >> 4) & 1;
909 u32 subtile_y = (src_y >> 2) & 3;
910 u32 utile_y = src_y & 3;
911 u32 x_off = vc4_state->src_x & tile_w_mask;
912 u32 y_off = src_y & tile_h_mask;
913
914 /* When Y reflection is requested we must set the
915 * SCALER_PITCH0_TILE_LINE_DIR flag to tell HVS that all lines
916 * after the initial one should be fetched in descending order,
917 * which makes sense since we start from the last line and go
918 * backward.
919 * Don't know why we need y_off = max_y_off - y_off, but it's
920 * definitely required (I guess it's also related to the "going
921 * backward" situation).
922 */
923 if (rotation & DRM_MODE_REFLECT_Y) {
924 y_off = tile_h_mask - y_off;
925 pitch0 = SCALER_PITCH0_TILE_LINE_DIR;
926 } else {
927 pitch0 = 0;
928 }
929
930 tiling = SCALER_CTL0_TILING_256B_OR_T;
931 pitch0 |= (VC4_SET_FIELD(x_off, SCALER_PITCH0_SINK_PIX) |
932 VC4_SET_FIELD(y_off, SCALER_PITCH0_TILE_Y_OFFSET) |
933 VC4_SET_FIELD(tiles_l, SCALER_PITCH0_TILE_WIDTH_L) |
934 VC4_SET_FIELD(tiles_r, SCALER_PITCH0_TILE_WIDTH_R));
935 vc4_state->offsets[0] += tiles_t * (tiles_w << tile_size_shift);
936 vc4_state->offsets[0] += subtile_y << 8;
937 vc4_state->offsets[0] += utile_y << 4;
938
939 /* Rows of tiles alternate left-to-right and right-to-left. */
940 if (tiles_t & 1) {
941 pitch0 |= SCALER_PITCH0_TILE_INITIAL_LINE_DIR;
942 vc4_state->offsets[0] += (tiles_w - tiles_l) <<
943 tile_size_shift;
944 vc4_state->offsets[0] -= (1 + !tile_y) << 10;
945 } else {
946 vc4_state->offsets[0] += tiles_l << tile_size_shift;
947 vc4_state->offsets[0] += tile_y << 10;
948 }
949
950 break;
951 }
952
953 case DRM_FORMAT_MOD_BROADCOM_SAND64:
954 case DRM_FORMAT_MOD_BROADCOM_SAND128:
955 case DRM_FORMAT_MOD_BROADCOM_SAND256: {
956 uint32_t param = fourcc_mod_broadcom_param(fb->modifier);
957
958 if (param > SCALER_TILE_HEIGHT_MASK) {
959 DRM_DEBUG_KMS("SAND height too large (%d)\n",
960 param);
961 return -EINVAL;
962 }
963
964 if (fb->format->format == DRM_FORMAT_P030) {
965 hvs_format = HVS_PIXEL_FORMAT_YCBCR_10BIT;
966 tiling = SCALER_CTL0_TILING_128B;
967 } else {
968 hvs_format = HVS_PIXEL_FORMAT_H264;
969
970 switch (base_format_mod) {
971 case DRM_FORMAT_MOD_BROADCOM_SAND64:
972 tiling = SCALER_CTL0_TILING_64B;
973 break;
974 case DRM_FORMAT_MOD_BROADCOM_SAND128:
975 tiling = SCALER_CTL0_TILING_128B;
976 break;
977 case DRM_FORMAT_MOD_BROADCOM_SAND256:
978 tiling = SCALER_CTL0_TILING_256B_OR_T;
979 break;
980 default:
981 return -EINVAL;
982 }
983 }
984
985 /* Adjust the base pointer to the first pixel to be scanned
986 * out.
987 *
988 * For P030, y_ptr [31:4] is the 128bit word for the start pixel
989 * y_ptr [3:0] is the pixel (0-11) contained within that 128bit
990 * word that should be taken as the first pixel.
991 * Ditto uv_ptr [31:4] vs [3:0], however [3:0] contains the
992 * element within the 128bit word, eg for pixel 3 the value
993 * should be 6.
994 */
995 for (i = 0; i < num_planes; i++) {
996 u32 tile_w, tile, x_off, pix_per_tile;
997
998 if (fb->format->format == DRM_FORMAT_P030) {
999 /*
1000 * Spec says: bits [31:4] of the given address
1001 * should point to the 128-bit word containing
1002 * the desired starting pixel, and bits[3:0]
1003 * should be between 0 and 11, indicating which
1004 * of the 12-pixels in that 128-bit word is the
1005 * first pixel to be used
1006 */
1007 u32 remaining_pixels = vc4_state->src_x % 96;
1008 u32 aligned = remaining_pixels / 12;
1009 u32 last_bits = remaining_pixels % 12;
1010
1011 x_off = aligned * 16 + last_bits;
1012 tile_w = 128;
1013 pix_per_tile = 96;
1014 } else {
1015 switch (base_format_mod) {
1016 case DRM_FORMAT_MOD_BROADCOM_SAND64:
1017 tile_w = 64;
1018 break;
1019 case DRM_FORMAT_MOD_BROADCOM_SAND128:
1020 tile_w = 128;
1021 break;
1022 case DRM_FORMAT_MOD_BROADCOM_SAND256:
1023 tile_w = 256;
1024 break;
1025 default:
1026 return -EINVAL;
1027 }
1028 pix_per_tile = tile_w / fb->format->cpp[0];
1029 x_off = (vc4_state->src_x % pix_per_tile) /
1030 (i ? h_subsample : 1) *
1031 fb->format->cpp[i];
1032 }
1033
1034 tile = vc4_state->src_x / pix_per_tile;
1035
1036 vc4_state->offsets[i] += param * tile_w * tile;
1037 vc4_state->offsets[i] += src_y /
1038 (i ? v_subsample : 1) *
1039 tile_w;
1040 vc4_state->offsets[i] += x_off & ~(i ? 1 : 0);
1041 }
1042
1043 pitch0 = VC4_SET_FIELD(param, SCALER_TILE_HEIGHT);
1044 break;
1045 }
1046
1047 default:
1048 DRM_DEBUG_KMS("Unsupported FB tiling flag 0x%16llx",
1049 (long long)fb->modifier);
1050 return -EINVAL;
1051 }
1052
1053 /* Don't waste cycles mixing with plane alpha if the set alpha
1054 * is opaque or there is no per-pixel alpha information.
1055 * In any case we use the alpha property value as the fixed alpha.
1056 */
1057 mix_plane_alpha = state->alpha != DRM_BLEND_ALPHA_OPAQUE &&
1058 fb->format->has_alpha;
1059
1060 if (!vc4->is_vc5) {
1061 /* Control word */
1062 vc4_dlist_write(vc4_state,
1063 SCALER_CTL0_VALID |
1064 (rotation & DRM_MODE_REFLECT_X ? SCALER_CTL0_HFLIP : 0) |
1065 (rotation & DRM_MODE_REFLECT_Y ? SCALER_CTL0_VFLIP : 0) |
1066 VC4_SET_FIELD(SCALER_CTL0_RGBA_EXPAND_ROUND, SCALER_CTL0_RGBA_EXPAND) |
1067 (format->pixel_order << SCALER_CTL0_ORDER_SHIFT) |
1068 (hvs_format << SCALER_CTL0_PIXEL_FORMAT_SHIFT) |
1069 VC4_SET_FIELD(tiling, SCALER_CTL0_TILING) |
1070 (vc4_state->is_unity ? SCALER_CTL0_UNITY : 0) |
1071 VC4_SET_FIELD(scl0, SCALER_CTL0_SCL0) |
1072 VC4_SET_FIELD(scl1, SCALER_CTL0_SCL1));
1073
1074 /* Position Word 0: Image Positions and Alpha Value */
1075 vc4_state->pos0_offset = vc4_state->dlist_count;
1076 vc4_dlist_write(vc4_state,
1077 VC4_SET_FIELD(state->alpha >> 8, SCALER_POS0_FIXED_ALPHA) |
1078 VC4_SET_FIELD(vc4_state->crtc_x, SCALER_POS0_START_X) |
1079 VC4_SET_FIELD(vc4_state->crtc_y, SCALER_POS0_START_Y));
1080
1081 /* Position Word 1: Scaled Image Dimensions. */
1082 if (!vc4_state->is_unity) {
1083 vc4_dlist_write(vc4_state,
1084 VC4_SET_FIELD(vc4_state->crtc_w,
1085 SCALER_POS1_SCL_WIDTH) |
1086 VC4_SET_FIELD(vc4_state->crtc_h,
1087 SCALER_POS1_SCL_HEIGHT));
1088 }
1089
1090 /* Position Word 2: Source Image Size, Alpha */
1091 vc4_state->pos2_offset = vc4_state->dlist_count;
1092 vc4_dlist_write(vc4_state,
1093 (mix_plane_alpha ? SCALER_POS2_ALPHA_MIX : 0) |
1094 vc4_hvs4_get_alpha_blend_mode(state) |
1095 VC4_SET_FIELD(vc4_state->src_w[0],
1096 SCALER_POS2_WIDTH) |
1097 VC4_SET_FIELD(vc4_state->src_h[0],
1098 SCALER_POS2_HEIGHT));
1099
1100 /* Position Word 3: Context. Written by the HVS. */
1101 vc4_dlist_write(vc4_state, 0xc0c0c0c0);
1102
1103 } else {
1104 /* Control word */
1105 vc4_dlist_write(vc4_state,
1106 SCALER_CTL0_VALID |
1107 (format->pixel_order_hvs5 << SCALER_CTL0_ORDER_SHIFT) |
1108 (hvs_format << SCALER_CTL0_PIXEL_FORMAT_SHIFT) |
1109 VC4_SET_FIELD(tiling, SCALER_CTL0_TILING) |
1110 (vc4_state->is_unity ?
1111 SCALER5_CTL0_UNITY : 0) |
1112 VC4_SET_FIELD(scl0, SCALER_CTL0_SCL0) |
1113 VC4_SET_FIELD(scl1, SCALER_CTL0_SCL1) |
1114 SCALER5_CTL0_ALPHA_EXPAND |
1115 SCALER5_CTL0_RGB_EXPAND);
1116
1117 /* Position Word 0: Image Positions and Alpha Value */
1118 vc4_state->pos0_offset = vc4_state->dlist_count;
1119 vc4_dlist_write(vc4_state,
1120 (rotation & DRM_MODE_REFLECT_Y ?
1121 SCALER5_POS0_VFLIP : 0) |
1122 VC4_SET_FIELD(vc4_state->crtc_x,
1123 SCALER_POS0_START_X) |
1124 (rotation & DRM_MODE_REFLECT_X ?
1125 SCALER5_POS0_HFLIP : 0) |
1126 VC4_SET_FIELD(vc4_state->crtc_y,
1127 SCALER5_POS0_START_Y)
1128 );
1129
1130 /* Control Word 2 */
1131 vc4_dlist_write(vc4_state,
1132 VC4_SET_FIELD(state->alpha >> 4,
1133 SCALER5_CTL2_ALPHA) |
1134 vc4_hvs5_get_alpha_blend_mode(state) |
1135 (mix_plane_alpha ?
1136 SCALER5_CTL2_ALPHA_MIX : 0)
1137 );
1138
1139 /* Position Word 1: Scaled Image Dimensions. */
1140 if (!vc4_state->is_unity) {
1141 vc4_dlist_write(vc4_state,
1142 VC4_SET_FIELD(vc4_state->crtc_w,
1143 SCALER5_POS1_SCL_WIDTH) |
1144 VC4_SET_FIELD(vc4_state->crtc_h,
1145 SCALER5_POS1_SCL_HEIGHT));
1146 }
1147
1148 /* Position Word 2: Source Image Size */
1149 vc4_state->pos2_offset = vc4_state->dlist_count;
1150 vc4_dlist_write(vc4_state,
1151 VC4_SET_FIELD(vc4_state->src_w[0],
1152 SCALER5_POS2_WIDTH) |
1153 VC4_SET_FIELD(vc4_state->src_h[0],
1154 SCALER5_POS2_HEIGHT));
1155
1156 /* Position Word 3: Context. Written by the HVS. */
1157 vc4_dlist_write(vc4_state, 0xc0c0c0c0);
1158 }
1159
1160
1161 /* Pointer Word 0/1/2: RGB / Y / Cb / Cr Pointers
1162 *
1163 * The pointers may be any byte address.
1164 */
1165 vc4_state->ptr0_offset = vc4_state->dlist_count;
1166 for (i = 0; i < num_planes; i++)
1167 vc4_dlist_write(vc4_state, vc4_state->offsets[i]);
1168
1169 /* Pointer Context Word 0/1/2: Written by the HVS */
1170 for (i = 0; i < num_planes; i++)
1171 vc4_dlist_write(vc4_state, 0xc0c0c0c0);
1172
1173 /* Pitch word 0 */
1174 vc4_dlist_write(vc4_state, pitch0);
1175
1176 /* Pitch word 1/2 */
1177 for (i = 1; i < num_planes; i++) {
1178 if (hvs_format != HVS_PIXEL_FORMAT_H264 &&
1179 hvs_format != HVS_PIXEL_FORMAT_YCBCR_10BIT) {
1180 vc4_dlist_write(vc4_state,
1181 VC4_SET_FIELD(fb->pitches[i],
1182 SCALER_SRC_PITCH));
1183 } else {
1184 vc4_dlist_write(vc4_state, pitch0);
1185 }
1186 }
1187
1188 /* Colorspace conversion words */
1189 if (vc4_state->is_yuv) {
1190 enum drm_color_encoding color_encoding = state->color_encoding;
1191 enum drm_color_range color_range = state->color_range;
1192 const u32 *ccm;
1193
1194 if (color_encoding >= DRM_COLOR_ENCODING_MAX)
1195 color_encoding = DRM_COLOR_YCBCR_BT601;
1196 if (color_range >= DRM_COLOR_RANGE_MAX)
1197 color_range = DRM_COLOR_YCBCR_LIMITED_RANGE;
1198
1199 ccm = colorspace_coeffs[color_range][color_encoding];
1200
1201 vc4_dlist_write(vc4_state, ccm[0]);
1202 vc4_dlist_write(vc4_state, ccm[1]);
1203 vc4_dlist_write(vc4_state, ccm[2]);
1204 }
1205
1206 vc4_state->lbm_offset = 0;
1207
1208 if (vc4_state->x_scaling[0] != VC4_SCALING_NONE ||
1209 vc4_state->x_scaling[1] != VC4_SCALING_NONE ||
1210 vc4_state->y_scaling[0] != VC4_SCALING_NONE ||
1211 vc4_state->y_scaling[1] != VC4_SCALING_NONE) {
1212 /* Reserve a slot for the LBM Base Address. The real value will
1213 * be set when calling vc4_plane_allocate_lbm().
1214 */
1215 if (vc4_state->y_scaling[0] != VC4_SCALING_NONE ||
1216 vc4_state->y_scaling[1] != VC4_SCALING_NONE) {
1217 vc4_state->lbm_offset = vc4_state->dlist_count;
1218 vc4_dlist_counter_increment(vc4_state);
1219 }
1220
1221 if (num_planes > 1) {
1222 /* Emit Cb/Cr as channel 0 and Y as channel
1223 * 1. This matches how we set up scl0/scl1
1224 * above.
1225 */
1226 vc4_write_scaling_parameters(state, 1);
1227 }
1228 vc4_write_scaling_parameters(state, 0);
1229
1230 /* If any PPF setup was done, then all the kernel
1231 * pointers get uploaded.
1232 */
1233 if (vc4_state->x_scaling[0] == VC4_SCALING_PPF ||
1234 vc4_state->y_scaling[0] == VC4_SCALING_PPF ||
1235 vc4_state->x_scaling[1] == VC4_SCALING_PPF ||
1236 vc4_state->y_scaling[1] == VC4_SCALING_PPF) {
1237 u32 kernel = VC4_SET_FIELD(vc4->hvs->mitchell_netravali_filter.start,
1238 SCALER_PPF_KERNEL_OFFSET);
1239
1240 /* HPPF plane 0 */
1241 vc4_dlist_write(vc4_state, kernel);
1242 /* VPPF plane 0 */
1243 vc4_dlist_write(vc4_state, kernel);
1244 /* HPPF plane 1 */
1245 vc4_dlist_write(vc4_state, kernel);
1246 /* VPPF plane 1 */
1247 vc4_dlist_write(vc4_state, kernel);
1248 }
1249 }
1250
1251 vc4_state->dlist[ctl0_offset] |=
1252 VC4_SET_FIELD(vc4_state->dlist_count, SCALER_CTL0_SIZE);
1253
1254 /* crtc_* are already clipped coordinates. */
1255 covers_screen = vc4_state->crtc_x == 0 && vc4_state->crtc_y == 0 &&
1256 vc4_state->crtc_w == state->crtc->mode.hdisplay &&
1257 vc4_state->crtc_h == state->crtc->mode.vdisplay;
1258 /* Background fill might be necessary when the plane has per-pixel
1259 * alpha content or a non-opaque plane alpha and could blend from the
1260 * background or does not cover the entire screen.
1261 */
1262 vc4_state->needs_bg_fill = fb->format->has_alpha || !covers_screen ||
1263 state->alpha != DRM_BLEND_ALPHA_OPAQUE;
1264
1265 /* Flag the dlist as initialized to avoid checking it twice in case
1266 * the async update check already called vc4_plane_mode_set() and
1267 * decided to fallback to sync update because async update was not
1268 * possible.
1269 */
1270 vc4_state->dlist_initialized = 1;
1271
1272 vc4_plane_calc_load(state);
1273
1274 return 0;
1275}
1276
1277/* If a modeset involves changing the setup of a plane, the atomic
1278 * infrastructure will call this to validate a proposed plane setup.
1279 * However, if a plane isn't getting updated, this (and the
1280 * corresponding vc4_plane_atomic_update) won't get called. Thus, we
1281 * compute the dlist here and have all active plane dlists get updated
1282 * in the CRTC's flush.
1283 */
1284static int vc4_plane_atomic_check(struct drm_plane *plane,
1285 struct drm_atomic_state *state)
1286{
1287 struct drm_plane_state *new_plane_state = drm_atomic_get_new_plane_state(state,
1288 plane);
1289 struct vc4_plane_state *vc4_state = to_vc4_plane_state(new_plane_state);
1290 int ret;
1291
1292 vc4_state->dlist_count = 0;
1293
1294 if (!plane_enabled(new_plane_state))
1295 return 0;
1296
1297 ret = vc4_plane_mode_set(plane, new_plane_state);
1298 if (ret)
1299 return ret;
1300
1301 return vc4_plane_allocate_lbm(new_plane_state);
1302}
1303
1304static void vc4_plane_atomic_update(struct drm_plane *plane,
1305 struct drm_atomic_state *state)
1306{
1307 /* No contents here. Since we don't know where in the CRTC's
1308 * dlist we should be stored, our dlist is uploaded to the
1309 * hardware with vc4_plane_write_dlist() at CRTC atomic_flush
1310 * time.
1311 */
1312}
1313
1314u32 vc4_plane_write_dlist(struct drm_plane *plane, u32 __iomem *dlist)
1315{
1316 struct vc4_plane_state *vc4_state = to_vc4_plane_state(plane->state);
1317 int i;
1318 int idx;
1319
1320 if (!drm_dev_enter(plane->dev, &idx))
1321 goto out;
1322
1323 vc4_state->hw_dlist = dlist;
1324
1325 /* Can't memcpy_toio() because it needs to be 32-bit writes. */
1326 for (i = 0; i < vc4_state->dlist_count; i++)
1327 writel(vc4_state->dlist[i], &dlist[i]);
1328
1329 drm_dev_exit(idx);
1330
1331out:
1332 return vc4_state->dlist_count;
1333}
1334
1335u32 vc4_plane_dlist_size(const struct drm_plane_state *state)
1336{
1337 const struct vc4_plane_state *vc4_state = to_vc4_plane_state(state);
1338
1339 return vc4_state->dlist_count;
1340}
1341
1342/* Updates the plane to immediately (well, once the FIFO needs
1343 * refilling) scan out from at a new framebuffer.
1344 */
1345void vc4_plane_async_set_fb(struct drm_plane *plane, struct drm_framebuffer *fb)
1346{
1347 struct vc4_plane_state *vc4_state = to_vc4_plane_state(plane->state);
1348 struct drm_gem_dma_object *bo = drm_fb_dma_get_gem_obj(fb, 0);
1349 uint32_t addr;
1350 int idx;
1351
1352 if (!drm_dev_enter(plane->dev, &idx))
1353 return;
1354
1355 /* We're skipping the address adjustment for negative origin,
1356 * because this is only called on the primary plane.
1357 */
1358 WARN_ON_ONCE(plane->state->crtc_x < 0 || plane->state->crtc_y < 0);
1359 addr = bo->dma_addr + fb->offsets[0];
1360
1361 /* Write the new address into the hardware immediately. The
1362 * scanout will start from this address as soon as the FIFO
1363 * needs to refill with pixels.
1364 */
1365 writel(addr, &vc4_state->hw_dlist[vc4_state->ptr0_offset]);
1366
1367 /* Also update the CPU-side dlist copy, so that any later
1368 * atomic updates that don't do a new modeset on our plane
1369 * also use our updated address.
1370 */
1371 vc4_state->dlist[vc4_state->ptr0_offset] = addr;
1372
1373 drm_dev_exit(idx);
1374}
1375
1376static void vc4_plane_atomic_async_update(struct drm_plane *plane,
1377 struct drm_atomic_state *state)
1378{
1379 struct drm_plane_state *new_plane_state = drm_atomic_get_new_plane_state(state,
1380 plane);
1381 struct vc4_plane_state *vc4_state, *new_vc4_state;
1382 int idx;
1383
1384 if (!drm_dev_enter(plane->dev, &idx))
1385 return;
1386
1387 swap(plane->state->fb, new_plane_state->fb);
1388 plane->state->crtc_x = new_plane_state->crtc_x;
1389 plane->state->crtc_y = new_plane_state->crtc_y;
1390 plane->state->crtc_w = new_plane_state->crtc_w;
1391 plane->state->crtc_h = new_plane_state->crtc_h;
1392 plane->state->src_x = new_plane_state->src_x;
1393 plane->state->src_y = new_plane_state->src_y;
1394 plane->state->src_w = new_plane_state->src_w;
1395 plane->state->src_h = new_plane_state->src_h;
1396 plane->state->alpha = new_plane_state->alpha;
1397 plane->state->pixel_blend_mode = new_plane_state->pixel_blend_mode;
1398 plane->state->rotation = new_plane_state->rotation;
1399 plane->state->zpos = new_plane_state->zpos;
1400 plane->state->normalized_zpos = new_plane_state->normalized_zpos;
1401 plane->state->color_encoding = new_plane_state->color_encoding;
1402 plane->state->color_range = new_plane_state->color_range;
1403 plane->state->src = new_plane_state->src;
1404 plane->state->dst = new_plane_state->dst;
1405 plane->state->visible = new_plane_state->visible;
1406
1407 new_vc4_state = to_vc4_plane_state(new_plane_state);
1408 vc4_state = to_vc4_plane_state(plane->state);
1409
1410 vc4_state->crtc_x = new_vc4_state->crtc_x;
1411 vc4_state->crtc_y = new_vc4_state->crtc_y;
1412 vc4_state->crtc_h = new_vc4_state->crtc_h;
1413 vc4_state->crtc_w = new_vc4_state->crtc_w;
1414 vc4_state->src_x = new_vc4_state->src_x;
1415 vc4_state->src_y = new_vc4_state->src_y;
1416 memcpy(vc4_state->src_w, new_vc4_state->src_w,
1417 sizeof(vc4_state->src_w));
1418 memcpy(vc4_state->src_h, new_vc4_state->src_h,
1419 sizeof(vc4_state->src_h));
1420 memcpy(vc4_state->x_scaling, new_vc4_state->x_scaling,
1421 sizeof(vc4_state->x_scaling));
1422 memcpy(vc4_state->y_scaling, new_vc4_state->y_scaling,
1423 sizeof(vc4_state->y_scaling));
1424 vc4_state->is_unity = new_vc4_state->is_unity;
1425 vc4_state->is_yuv = new_vc4_state->is_yuv;
1426 memcpy(vc4_state->offsets, new_vc4_state->offsets,
1427 sizeof(vc4_state->offsets));
1428 vc4_state->needs_bg_fill = new_vc4_state->needs_bg_fill;
1429
1430 /* Update the current vc4_state pos0, pos2 and ptr0 dlist entries. */
1431 vc4_state->dlist[vc4_state->pos0_offset] =
1432 new_vc4_state->dlist[vc4_state->pos0_offset];
1433 vc4_state->dlist[vc4_state->pos2_offset] =
1434 new_vc4_state->dlist[vc4_state->pos2_offset];
1435 vc4_state->dlist[vc4_state->ptr0_offset] =
1436 new_vc4_state->dlist[vc4_state->ptr0_offset];
1437
1438 /* Note that we can't just call vc4_plane_write_dlist()
1439 * because that would smash the context data that the HVS is
1440 * currently using.
1441 */
1442 writel(vc4_state->dlist[vc4_state->pos0_offset],
1443 &vc4_state->hw_dlist[vc4_state->pos0_offset]);
1444 writel(vc4_state->dlist[vc4_state->pos2_offset],
1445 &vc4_state->hw_dlist[vc4_state->pos2_offset]);
1446 writel(vc4_state->dlist[vc4_state->ptr0_offset],
1447 &vc4_state->hw_dlist[vc4_state->ptr0_offset]);
1448
1449 drm_dev_exit(idx);
1450}
1451
1452static int vc4_plane_atomic_async_check(struct drm_plane *plane,
1453 struct drm_atomic_state *state)
1454{
1455 struct drm_plane_state *new_plane_state = drm_atomic_get_new_plane_state(state,
1456 plane);
1457 struct vc4_plane_state *old_vc4_state, *new_vc4_state;
1458 int ret;
1459 u32 i;
1460
1461 ret = vc4_plane_mode_set(plane, new_plane_state);
1462 if (ret)
1463 return ret;
1464
1465 old_vc4_state = to_vc4_plane_state(plane->state);
1466 new_vc4_state = to_vc4_plane_state(new_plane_state);
1467
1468 if (!new_vc4_state->hw_dlist)
1469 return -EINVAL;
1470
1471 if (old_vc4_state->dlist_count != new_vc4_state->dlist_count ||
1472 old_vc4_state->pos0_offset != new_vc4_state->pos0_offset ||
1473 old_vc4_state->pos2_offset != new_vc4_state->pos2_offset ||
1474 old_vc4_state->ptr0_offset != new_vc4_state->ptr0_offset ||
1475 vc4_lbm_size(plane->state) != vc4_lbm_size(new_plane_state))
1476 return -EINVAL;
1477
1478 /* Only pos0, pos2 and ptr0 DWORDS can be updated in an async update
1479 * if anything else has changed, fallback to a sync update.
1480 */
1481 for (i = 0; i < new_vc4_state->dlist_count; i++) {
1482 if (i == new_vc4_state->pos0_offset ||
1483 i == new_vc4_state->pos2_offset ||
1484 i == new_vc4_state->ptr0_offset ||
1485 (new_vc4_state->lbm_offset &&
1486 i == new_vc4_state->lbm_offset))
1487 continue;
1488
1489 if (new_vc4_state->dlist[i] != old_vc4_state->dlist[i])
1490 return -EINVAL;
1491 }
1492
1493 return 0;
1494}
1495
1496static int vc4_prepare_fb(struct drm_plane *plane,
1497 struct drm_plane_state *state)
1498{
1499 struct vc4_bo *bo;
1500
1501 if (!state->fb)
1502 return 0;
1503
1504 bo = to_vc4_bo(&drm_fb_dma_get_gem_obj(state->fb, 0)->base);
1505
1506 drm_gem_plane_helper_prepare_fb(plane, state);
1507
1508 if (plane->state->fb == state->fb)
1509 return 0;
1510
1511 return vc4_bo_inc_usecnt(bo);
1512}
1513
1514static void vc4_cleanup_fb(struct drm_plane *plane,
1515 struct drm_plane_state *state)
1516{
1517 struct vc4_bo *bo;
1518
1519 if (plane->state->fb == state->fb || !state->fb)
1520 return;
1521
1522 bo = to_vc4_bo(&drm_fb_dma_get_gem_obj(state->fb, 0)->base);
1523 vc4_bo_dec_usecnt(bo);
1524}
1525
1526static const struct drm_plane_helper_funcs vc4_plane_helper_funcs = {
1527 .atomic_check = vc4_plane_atomic_check,
1528 .atomic_update = vc4_plane_atomic_update,
1529 .prepare_fb = vc4_prepare_fb,
1530 .cleanup_fb = vc4_cleanup_fb,
1531 .atomic_async_check = vc4_plane_atomic_async_check,
1532 .atomic_async_update = vc4_plane_atomic_async_update,
1533};
1534
1535static const struct drm_plane_helper_funcs vc5_plane_helper_funcs = {
1536 .atomic_check = vc4_plane_atomic_check,
1537 .atomic_update = vc4_plane_atomic_update,
1538 .atomic_async_check = vc4_plane_atomic_async_check,
1539 .atomic_async_update = vc4_plane_atomic_async_update,
1540};
1541
1542static bool vc4_format_mod_supported(struct drm_plane *plane,
1543 uint32_t format,
1544 uint64_t modifier)
1545{
1546 /* Support T_TILING for RGB formats only. */
1547 switch (format) {
1548 case DRM_FORMAT_XRGB8888:
1549 case DRM_FORMAT_ARGB8888:
1550 case DRM_FORMAT_ABGR8888:
1551 case DRM_FORMAT_XBGR8888:
1552 case DRM_FORMAT_RGB565:
1553 case DRM_FORMAT_BGR565:
1554 case DRM_FORMAT_ARGB1555:
1555 case DRM_FORMAT_XRGB1555:
1556 switch (fourcc_mod_broadcom_mod(modifier)) {
1557 case DRM_FORMAT_MOD_LINEAR:
1558 case DRM_FORMAT_MOD_BROADCOM_VC4_T_TILED:
1559 return true;
1560 default:
1561 return false;
1562 }
1563 case DRM_FORMAT_NV12:
1564 case DRM_FORMAT_NV21:
1565 switch (fourcc_mod_broadcom_mod(modifier)) {
1566 case DRM_FORMAT_MOD_LINEAR:
1567 case DRM_FORMAT_MOD_BROADCOM_SAND64:
1568 case DRM_FORMAT_MOD_BROADCOM_SAND128:
1569 case DRM_FORMAT_MOD_BROADCOM_SAND256:
1570 return true;
1571 default:
1572 return false;
1573 }
1574 case DRM_FORMAT_P030:
1575 switch (fourcc_mod_broadcom_mod(modifier)) {
1576 case DRM_FORMAT_MOD_BROADCOM_SAND128:
1577 return true;
1578 default:
1579 return false;
1580 }
1581 case DRM_FORMAT_RGBX1010102:
1582 case DRM_FORMAT_BGRX1010102:
1583 case DRM_FORMAT_RGBA1010102:
1584 case DRM_FORMAT_BGRA1010102:
1585 case DRM_FORMAT_XRGB4444:
1586 case DRM_FORMAT_ARGB4444:
1587 case DRM_FORMAT_XBGR4444:
1588 case DRM_FORMAT_ABGR4444:
1589 case DRM_FORMAT_RGBX4444:
1590 case DRM_FORMAT_RGBA4444:
1591 case DRM_FORMAT_BGRX4444:
1592 case DRM_FORMAT_BGRA4444:
1593 case DRM_FORMAT_RGB332:
1594 case DRM_FORMAT_BGR233:
1595 case DRM_FORMAT_YUV422:
1596 case DRM_FORMAT_YVU422:
1597 case DRM_FORMAT_YUV420:
1598 case DRM_FORMAT_YVU420:
1599 case DRM_FORMAT_NV16:
1600 case DRM_FORMAT_NV61:
1601 default:
1602 return (modifier == DRM_FORMAT_MOD_LINEAR);
1603 }
1604}
1605
1606static const struct drm_plane_funcs vc4_plane_funcs = {
1607 .update_plane = drm_atomic_helper_update_plane,
1608 .disable_plane = drm_atomic_helper_disable_plane,
1609 .reset = vc4_plane_reset,
1610 .atomic_duplicate_state = vc4_plane_duplicate_state,
1611 .atomic_destroy_state = vc4_plane_destroy_state,
1612 .format_mod_supported = vc4_format_mod_supported,
1613};
1614
1615struct drm_plane *vc4_plane_init(struct drm_device *dev,
1616 enum drm_plane_type type,
1617 uint32_t possible_crtcs)
1618{
1619 struct vc4_dev *vc4 = to_vc4_dev(dev);
1620 struct drm_plane *plane;
1621 struct vc4_plane *vc4_plane;
1622 u32 formats[ARRAY_SIZE(hvs_formats)];
1623 int num_formats = 0;
1624 unsigned i;
1625 static const uint64_t modifiers[] = {
1626 DRM_FORMAT_MOD_BROADCOM_VC4_T_TILED,
1627 DRM_FORMAT_MOD_BROADCOM_SAND128,
1628 DRM_FORMAT_MOD_BROADCOM_SAND64,
1629 DRM_FORMAT_MOD_BROADCOM_SAND256,
1630 DRM_FORMAT_MOD_LINEAR,
1631 DRM_FORMAT_MOD_INVALID
1632 };
1633
1634 for (i = 0; i < ARRAY_SIZE(hvs_formats); i++) {
1635 if (!hvs_formats[i].hvs5_only || vc4->is_vc5) {
1636 formats[num_formats] = hvs_formats[i].drm;
1637 num_formats++;
1638 }
1639 }
1640
1641 vc4_plane = drmm_universal_plane_alloc(dev, struct vc4_plane, base,
1642 possible_crtcs,
1643 &vc4_plane_funcs,
1644 formats, num_formats,
1645 modifiers, type, NULL);
1646 if (IS_ERR(vc4_plane))
1647 return ERR_CAST(vc4_plane);
1648 plane = &vc4_plane->base;
1649
1650 if (vc4->is_vc5)
1651 drm_plane_helper_add(plane, &vc5_plane_helper_funcs);
1652 else
1653 drm_plane_helper_add(plane, &vc4_plane_helper_funcs);
1654
1655 drm_plane_create_alpha_property(plane);
1656 drm_plane_create_blend_mode_property(plane,
1657 BIT(DRM_MODE_BLEND_PIXEL_NONE) |
1658 BIT(DRM_MODE_BLEND_PREMULTI) |
1659 BIT(DRM_MODE_BLEND_COVERAGE));
1660 drm_plane_create_rotation_property(plane, DRM_MODE_ROTATE_0,
1661 DRM_MODE_ROTATE_0 |
1662 DRM_MODE_ROTATE_180 |
1663 DRM_MODE_REFLECT_X |
1664 DRM_MODE_REFLECT_Y);
1665
1666 drm_plane_create_color_properties(plane,
1667 BIT(DRM_COLOR_YCBCR_BT601) |
1668 BIT(DRM_COLOR_YCBCR_BT709) |
1669 BIT(DRM_COLOR_YCBCR_BT2020),
1670 BIT(DRM_COLOR_YCBCR_LIMITED_RANGE) |
1671 BIT(DRM_COLOR_YCBCR_FULL_RANGE),
1672 DRM_COLOR_YCBCR_BT709,
1673 DRM_COLOR_YCBCR_LIMITED_RANGE);
1674
1675 if (type == DRM_PLANE_TYPE_PRIMARY)
1676 drm_plane_create_zpos_immutable_property(plane, 0);
1677
1678 return plane;
1679}
1680
1681#define VC4_NUM_OVERLAY_PLANES 16
1682
1683int vc4_plane_create_additional_planes(struct drm_device *drm)
1684{
1685 struct drm_plane *cursor_plane;
1686 struct drm_crtc *crtc;
1687 unsigned int i;
1688
1689 /* Set up some arbitrary number of planes. We're not limited
1690 * by a set number of physical registers, just the space in
1691 * the HVS (16k) and how small an plane can be (28 bytes).
1692 * However, each plane we set up takes up some memory, and
1693 * increases the cost of looping over planes, which atomic
1694 * modesetting does quite a bit. As a result, we pick a
1695 * modest number of planes to expose, that should hopefully
1696 * still cover any sane usecase.
1697 */
1698 for (i = 0; i < VC4_NUM_OVERLAY_PLANES; i++) {
1699 struct drm_plane *plane =
1700 vc4_plane_init(drm, DRM_PLANE_TYPE_OVERLAY,
1701 GENMASK(drm->mode_config.num_crtc - 1, 0));
1702
1703 if (IS_ERR(plane))
1704 continue;
1705
1706 /* Create zpos property. Max of all the overlays + 1 primary +
1707 * 1 cursor plane on a crtc.
1708 */
1709 drm_plane_create_zpos_property(plane, i + 1, 1,
1710 VC4_NUM_OVERLAY_PLANES + 1);
1711 }
1712
1713 drm_for_each_crtc(crtc, drm) {
1714 /* Set up the legacy cursor after overlay initialization,
1715 * since the zpos fallback is that planes are rendered by plane
1716 * ID order, and that then puts the cursor on top.
1717 */
1718 cursor_plane = vc4_plane_init(drm, DRM_PLANE_TYPE_CURSOR,
1719 drm_crtc_mask(crtc));
1720 if (!IS_ERR(cursor_plane)) {
1721 crtc->cursor = cursor_plane;
1722
1723 drm_plane_create_zpos_property(cursor_plane,
1724 VC4_NUM_OVERLAY_PLANES + 1,
1725 1,
1726 VC4_NUM_OVERLAY_PLANES + 1);
1727 }
1728 }
1729
1730 return 0;
1731}