1// SPDX-License-Identifier: GPL-2.0+
2/*
3 * i.MX IPUv3 DP Overlay Planes
4 *
5 * Copyright (C) 2013 Philipp Zabel, Pengutronix
6 */
7
8#include <drm/drm_atomic.h>
9#include <drm/drm_atomic_helper.h>
10#include <drm/drm_blend.h>
11#include <drm/drm_fb_dma_helper.h>
12#include <drm/drm_fourcc.h>
13#include <drm/drm_framebuffer.h>
14#include <drm/drm_gem_atomic_helper.h>
15#include <drm/drm_gem_dma_helper.h>
16#include <drm/drm_managed.h>
17
18#include <video/imx-ipu-v3.h>
19
20#include "imx-drm.h"
21#include "ipuv3-plane.h"
22
23struct ipu_plane_state {
24 struct drm_plane_state base;
25 bool use_pre;
26};
27
28static inline struct ipu_plane_state *
29to_ipu_plane_state(struct drm_plane_state *p)
30{
31 return container_of(p, struct ipu_plane_state, base);
32}
33
34static unsigned int ipu_src_rect_width(const struct drm_plane_state *state)
35{
36 return ALIGN(drm_rect_width(&state->src) >> 16, 8);
37}
38
39static inline struct ipu_plane *to_ipu_plane(struct drm_plane *p)
40{
41 return container_of(p, struct ipu_plane, base);
42}
43
44static const uint32_t ipu_plane_all_formats[] = {
45 DRM_FORMAT_ARGB1555,
46 DRM_FORMAT_XRGB1555,
47 DRM_FORMAT_ABGR1555,
48 DRM_FORMAT_XBGR1555,
49 DRM_FORMAT_RGBA5551,
50 DRM_FORMAT_BGRA5551,
51 DRM_FORMAT_ARGB4444,
52 DRM_FORMAT_ARGB8888,
53 DRM_FORMAT_XRGB8888,
54 DRM_FORMAT_ABGR8888,
55 DRM_FORMAT_XBGR8888,
56 DRM_FORMAT_RGBA8888,
57 DRM_FORMAT_RGBX8888,
58 DRM_FORMAT_BGRA8888,
59 DRM_FORMAT_BGRX8888,
60 DRM_FORMAT_UYVY,
61 DRM_FORMAT_VYUY,
62 DRM_FORMAT_YUYV,
63 DRM_FORMAT_YVYU,
64 DRM_FORMAT_YUV420,
65 DRM_FORMAT_YVU420,
66 DRM_FORMAT_YUV422,
67 DRM_FORMAT_YVU422,
68 DRM_FORMAT_YUV444,
69 DRM_FORMAT_YVU444,
70 DRM_FORMAT_NV12,
71 DRM_FORMAT_NV16,
72 DRM_FORMAT_RGB565,
73 DRM_FORMAT_RGB565_A8,
74 DRM_FORMAT_BGR565_A8,
75 DRM_FORMAT_RGB888_A8,
76 DRM_FORMAT_BGR888_A8,
77 DRM_FORMAT_RGBX8888_A8,
78 DRM_FORMAT_BGRX8888_A8,
79};
80
81static const uint32_t ipu_plane_rgb_formats[] = {
82 DRM_FORMAT_ARGB1555,
83 DRM_FORMAT_XRGB1555,
84 DRM_FORMAT_ABGR1555,
85 DRM_FORMAT_XBGR1555,
86 DRM_FORMAT_RGBA5551,
87 DRM_FORMAT_BGRA5551,
88 DRM_FORMAT_ARGB4444,
89 DRM_FORMAT_ARGB8888,
90 DRM_FORMAT_XRGB8888,
91 DRM_FORMAT_ABGR8888,
92 DRM_FORMAT_XBGR8888,
93 DRM_FORMAT_RGBA8888,
94 DRM_FORMAT_RGBX8888,
95 DRM_FORMAT_BGRA8888,
96 DRM_FORMAT_BGRX8888,
97 DRM_FORMAT_RGB565,
98 DRM_FORMAT_RGB565_A8,
99 DRM_FORMAT_BGR565_A8,
100 DRM_FORMAT_RGB888_A8,
101 DRM_FORMAT_BGR888_A8,
102 DRM_FORMAT_RGBX8888_A8,
103 DRM_FORMAT_BGRX8888_A8,
104};
105
106static const uint64_t ipu_format_modifiers[] = {
107 DRM_FORMAT_MOD_LINEAR,
108 DRM_FORMAT_MOD_INVALID
109};
110
111static const uint64_t pre_format_modifiers[] = {
112 DRM_FORMAT_MOD_LINEAR,
113 DRM_FORMAT_MOD_VIVANTE_TILED,
114 DRM_FORMAT_MOD_VIVANTE_SUPER_TILED,
115 DRM_FORMAT_MOD_INVALID
116};
117
118int ipu_plane_irq(struct ipu_plane *ipu_plane)
119{
120 return ipu_idmac_channel_irq(ipu: ipu_plane->ipu, channel: ipu_plane->ipu_ch,
121 irq: IPU_IRQ_EOF);
122}
123
124static inline unsigned long
125drm_plane_state_to_eba(struct drm_plane_state *state, int plane)
126{
127 struct drm_framebuffer *fb = state->fb;
128 struct drm_gem_dma_object *dma_obj;
129 int x = state->src.x1 >> 16;
130 int y = state->src.y1 >> 16;
131
132 dma_obj = drm_fb_dma_get_gem_obj(fb, plane);
133 BUG_ON(!dma_obj);
134
135 return dma_obj->dma_addr + fb->offsets[plane] + fb->pitches[plane] * y +
136 fb->format->cpp[plane] * x;
137}
138
139static inline unsigned long
140drm_plane_state_to_ubo(struct drm_plane_state *state)
141{
142 struct drm_framebuffer *fb = state->fb;
143 struct drm_gem_dma_object *dma_obj;
144 unsigned long eba = drm_plane_state_to_eba(state, plane: 0);
145 int x = state->src.x1 >> 16;
146 int y = state->src.y1 >> 16;
147
148 dma_obj = drm_fb_dma_get_gem_obj(fb, plane: 1);
149 BUG_ON(!dma_obj);
150
151 x /= fb->format->hsub;
152 y /= fb->format->vsub;
153
154 return dma_obj->dma_addr + fb->offsets[1] + fb->pitches[1] * y +
155 fb->format->cpp[1] * x - eba;
156}
157
158static inline unsigned long
159drm_plane_state_to_vbo(struct drm_plane_state *state)
160{
161 struct drm_framebuffer *fb = state->fb;
162 struct drm_gem_dma_object *dma_obj;
163 unsigned long eba = drm_plane_state_to_eba(state, plane: 0);
164 int x = state->src.x1 >> 16;
165 int y = state->src.y1 >> 16;
166
167 dma_obj = drm_fb_dma_get_gem_obj(fb, plane: 2);
168 BUG_ON(!dma_obj);
169
170 x /= fb->format->hsub;
171 y /= fb->format->vsub;
172
173 return dma_obj->dma_addr + fb->offsets[2] + fb->pitches[2] * y +
174 fb->format->cpp[2] * x - eba;
175}
176
177static void ipu_plane_put_resources(struct drm_device *dev, void *ptr)
178{
179 struct ipu_plane *ipu_plane = ptr;
180
181 if (!IS_ERR_OR_NULL(ptr: ipu_plane->dp))
182 ipu_dp_put(ipu_plane->dp);
183 if (!IS_ERR_OR_NULL(ptr: ipu_plane->dmfc))
184 ipu_dmfc_put(dmfc: ipu_plane->dmfc);
185 if (!IS_ERR_OR_NULL(ptr: ipu_plane->ipu_ch))
186 ipu_idmac_put(ipu_plane->ipu_ch);
187 if (!IS_ERR_OR_NULL(ptr: ipu_plane->alpha_ch))
188 ipu_idmac_put(ipu_plane->alpha_ch);
189}
190
191static int ipu_plane_get_resources(struct drm_device *dev,
192 struct ipu_plane *ipu_plane)
193{
194 int ret;
195 int alpha_ch;
196
197 ipu_plane->ipu_ch = ipu_idmac_get(ipu: ipu_plane->ipu, channel: ipu_plane->dma);
198 if (IS_ERR(ptr: ipu_plane->ipu_ch)) {
199 ret = PTR_ERR(ptr: ipu_plane->ipu_ch);
200 DRM_ERROR("failed to get idmac channel: %d\n", ret);
201 return ret;
202 }
203
204 ret = drmm_add_action_or_reset(dev, ipu_plane_put_resources, ipu_plane);
205 if (ret)
206 return ret;
207
208 alpha_ch = ipu_channel_alpha_channel(ch_num: ipu_plane->dma);
209 if (alpha_ch >= 0) {
210 ipu_plane->alpha_ch = ipu_idmac_get(ipu: ipu_plane->ipu, channel: alpha_ch);
211 if (IS_ERR(ptr: ipu_plane->alpha_ch)) {
212 ret = PTR_ERR(ptr: ipu_plane->alpha_ch);
213 DRM_ERROR("failed to get alpha idmac channel %d: %d\n",
214 alpha_ch, ret);
215 return ret;
216 }
217 }
218
219 ipu_plane->dmfc = ipu_dmfc_get(ipu: ipu_plane->ipu, ipuv3_channel: ipu_plane->dma);
220 if (IS_ERR(ptr: ipu_plane->dmfc)) {
221 ret = PTR_ERR(ptr: ipu_plane->dmfc);
222 DRM_ERROR("failed to get dmfc: ret %d\n", ret);
223 return ret;
224 }
225
226 if (ipu_plane->dp_flow >= 0) {
227 ipu_plane->dp = ipu_dp_get(ipu: ipu_plane->ipu, flow: ipu_plane->dp_flow);
228 if (IS_ERR(ptr: ipu_plane->dp)) {
229 ret = PTR_ERR(ptr: ipu_plane->dp);
230 DRM_ERROR("failed to get dp flow: %d\n", ret);
231 return ret;
232 }
233 }
234
235 return 0;
236}
237
238static bool ipu_plane_separate_alpha(struct ipu_plane *ipu_plane)
239{
240 switch (ipu_plane->base.state->fb->format->format) {
241 case DRM_FORMAT_RGB565_A8:
242 case DRM_FORMAT_BGR565_A8:
243 case DRM_FORMAT_RGB888_A8:
244 case DRM_FORMAT_BGR888_A8:
245 case DRM_FORMAT_RGBX8888_A8:
246 case DRM_FORMAT_BGRX8888_A8:
247 return true;
248 default:
249 return false;
250 }
251}
252
253static void ipu_plane_enable(struct ipu_plane *ipu_plane)
254{
255 if (ipu_plane->dp)
256 ipu_dp_enable(ipu: ipu_plane->ipu);
257 ipu_dmfc_enable_channel(dmfc: ipu_plane->dmfc);
258 ipu_idmac_enable_channel(channel: ipu_plane->ipu_ch);
259 if (ipu_plane_separate_alpha(ipu_plane))
260 ipu_idmac_enable_channel(channel: ipu_plane->alpha_ch);
261 if (ipu_plane->dp)
262 ipu_dp_enable_channel(dp: ipu_plane->dp);
263}
264
265void ipu_plane_disable(struct ipu_plane *ipu_plane, bool disable_dp_channel)
266{
267 int ret;
268
269 DRM_DEBUG_KMS("[%d] %s\n", __LINE__, __func__);
270
271 ret = ipu_idmac_wait_busy(channel: ipu_plane->ipu_ch, ms: 50);
272 if (ret == -ETIMEDOUT) {
273 DRM_ERROR("[PLANE:%d] IDMAC timeout\n",
274 ipu_plane->base.base.id);
275 }
276
277 if (ipu_plane->dp && disable_dp_channel)
278 ipu_dp_disable_channel(dp: ipu_plane->dp, sync: false);
279 ipu_idmac_disable_channel(channel: ipu_plane->ipu_ch);
280 if (ipu_plane->alpha_ch)
281 ipu_idmac_disable_channel(channel: ipu_plane->alpha_ch);
282 ipu_dmfc_disable_channel(dmfc: ipu_plane->dmfc);
283 if (ipu_plane->dp)
284 ipu_dp_disable(ipu: ipu_plane->ipu);
285 if (ipu_prg_present(ipu: ipu_plane->ipu))
286 ipu_prg_channel_disable(ipu_chan: ipu_plane->ipu_ch);
287}
288
289void ipu_plane_disable_deferred(struct drm_plane *plane)
290{
291 struct ipu_plane *ipu_plane = to_ipu_plane(p: plane);
292
293 if (ipu_plane->disabling) {
294 ipu_plane->disabling = false;
295 ipu_plane_disable(ipu_plane, disable_dp_channel: false);
296 }
297}
298
299static void ipu_plane_state_reset(struct drm_plane *plane)
300{
301 struct ipu_plane_state *ipu_state;
302
303 if (plane->state) {
304 ipu_state = to_ipu_plane_state(p: plane->state);
305 __drm_atomic_helper_plane_destroy_state(state: plane->state);
306 kfree(objp: ipu_state);
307 plane->state = NULL;
308 }
309
310 ipu_state = kzalloc(size: sizeof(*ipu_state), GFP_KERNEL);
311
312 if (ipu_state)
313 __drm_atomic_helper_plane_reset(plane, state: &ipu_state->base);
314}
315
316static struct drm_plane_state *
317ipu_plane_duplicate_state(struct drm_plane *plane)
318{
319 struct ipu_plane_state *state;
320
321 if (WARN_ON(!plane->state))
322 return NULL;
323
324 state = kmalloc(size: sizeof(*state), GFP_KERNEL);
325 if (state)
326 __drm_atomic_helper_plane_duplicate_state(plane, state: &state->base);
327
328 return &state->base;
329}
330
331static void ipu_plane_destroy_state(struct drm_plane *plane,
332 struct drm_plane_state *state)
333{
334 struct ipu_plane_state *ipu_state = to_ipu_plane_state(p: state);
335
336 __drm_atomic_helper_plane_destroy_state(state);
337 kfree(objp: ipu_state);
338}
339
340static bool ipu_plane_format_mod_supported(struct drm_plane *plane,
341 uint32_t format, uint64_t modifier)
342{
343 struct ipu_soc *ipu = to_ipu_plane(p: plane)->ipu;
344
345 /* linear is supported for all planes and formats */
346 if (modifier == DRM_FORMAT_MOD_LINEAR)
347 return true;
348
349 /*
350 * Without a PRG the possible modifiers list only includes the linear
351 * modifier, so we always take the early return from this function and
352 * only end up here if the PRG is present.
353 */
354 return ipu_prg_format_supported(ipu, format, modifier);
355}
356
357static const struct drm_plane_funcs ipu_plane_funcs = {
358 .update_plane = drm_atomic_helper_update_plane,
359 .disable_plane = drm_atomic_helper_disable_plane,
360 .reset = ipu_plane_state_reset,
361 .atomic_duplicate_state = ipu_plane_duplicate_state,
362 .atomic_destroy_state = ipu_plane_destroy_state,
363 .format_mod_supported = ipu_plane_format_mod_supported,
364};
365
366static int ipu_plane_atomic_check(struct drm_plane *plane,
367 struct drm_atomic_state *state)
368{
369 struct drm_plane_state *new_state = drm_atomic_get_new_plane_state(state,
370 plane);
371 struct drm_plane_state *old_state = drm_atomic_get_old_plane_state(state,
372 plane);
373 struct drm_crtc_state *crtc_state;
374 struct device *dev = plane->dev->dev;
375 struct drm_framebuffer *fb = new_state->fb;
376 struct drm_framebuffer *old_fb = old_state->fb;
377 unsigned long eba, ubo, vbo, old_ubo, old_vbo, alpha_eba;
378 bool can_position = (plane->type == DRM_PLANE_TYPE_OVERLAY);
379 int ret;
380
381 /* Ok to disable */
382 if (!fb)
383 return 0;
384
385 if (WARN_ON(!new_state->crtc))
386 return -EINVAL;
387
388 crtc_state =
389 drm_atomic_get_existing_crtc_state(state,
390 crtc: new_state->crtc);
391 if (WARN_ON(!crtc_state))
392 return -EINVAL;
393
394 ret = drm_atomic_helper_check_plane_state(plane_state: new_state, crtc_state,
395 DRM_PLANE_NO_SCALING,
396 DRM_PLANE_NO_SCALING,
397 can_position, can_update_disabled: true);
398 if (ret)
399 return ret;
400
401 /* nothing to check when disabling or disabled */
402 if (!crtc_state->enable)
403 return 0;
404
405 switch (plane->type) {
406 case DRM_PLANE_TYPE_PRIMARY:
407 /* full plane minimum width is 13 pixels */
408 if (drm_rect_width(r: &new_state->dst) < 13)
409 return -EINVAL;
410 break;
411 case DRM_PLANE_TYPE_OVERLAY:
412 break;
413 default:
414 dev_warn(dev, "Unsupported plane type %d\n", plane->type);
415 return -EINVAL;
416 }
417
418 if (drm_rect_height(r: &new_state->dst) < 2)
419 return -EINVAL;
420
421 /*
422 * We support resizing active plane or changing its format by
423 * forcing CRTC mode change in plane's ->atomic_check callback
424 * and disabling all affected active planes in CRTC's ->atomic_disable
425 * callback. The planes will be reenabled in plane's ->atomic_update
426 * callback.
427 */
428 if (old_fb &&
429 (drm_rect_width(r: &new_state->dst) != drm_rect_width(r: &old_state->dst) ||
430 drm_rect_height(r: &new_state->dst) != drm_rect_height(r: &old_state->dst) ||
431 fb->format != old_fb->format))
432 crtc_state->mode_changed = true;
433
434 eba = drm_plane_state_to_eba(state: new_state, plane: 0);
435
436 if (eba & 0x7)
437 return -EINVAL;
438
439 if (fb->pitches[0] < 1 || fb->pitches[0] > 16384)
440 return -EINVAL;
441
442 if (old_fb && fb->pitches[0] != old_fb->pitches[0])
443 crtc_state->mode_changed = true;
444
445 if (ALIGN(fb->width, 8) * fb->format->cpp[0] >
446 fb->pitches[0] + fb->offsets[0]) {
447 dev_warn(dev, "pitch is not big enough for 8 pixels alignment");
448 return -EINVAL;
449 }
450
451 switch (fb->format->format) {
452 case DRM_FORMAT_YUV420:
453 case DRM_FORMAT_YVU420:
454 case DRM_FORMAT_YUV422:
455 case DRM_FORMAT_YVU422:
456 case DRM_FORMAT_YUV444:
457 case DRM_FORMAT_YVU444:
458 /*
459 * Multiplanar formats have to meet the following restrictions:
460 * - The (up to) three plane addresses are EBA, EBA+UBO, EBA+VBO
461 * - EBA, UBO and VBO are a multiple of 8
462 * - UBO and VBO are unsigned and not larger than 0xfffff8
463 * - Only EBA may be changed while scanout is active
464 * - The strides of U and V planes must be identical.
465 */
466 vbo = drm_plane_state_to_vbo(state: new_state);
467
468 if (vbo & 0x7 || vbo > 0xfffff8)
469 return -EINVAL;
470
471 if (old_fb && (fb->format == old_fb->format)) {
472 old_vbo = drm_plane_state_to_vbo(state: old_state);
473 if (vbo != old_vbo)
474 crtc_state->mode_changed = true;
475 }
476
477 if (fb->pitches[1] != fb->pitches[2])
478 return -EINVAL;
479
480 fallthrough;
481 case DRM_FORMAT_NV12:
482 case DRM_FORMAT_NV16:
483 ubo = drm_plane_state_to_ubo(state: new_state);
484
485 if (ubo & 0x7 || ubo > 0xfffff8)
486 return -EINVAL;
487
488 if (old_fb && (fb->format == old_fb->format)) {
489 old_ubo = drm_plane_state_to_ubo(state: old_state);
490 if (ubo != old_ubo)
491 crtc_state->mode_changed = true;
492 }
493
494 if (fb->pitches[1] < 1 || fb->pitches[1] > 16384)
495 return -EINVAL;
496
497 if (old_fb && old_fb->pitches[1] != fb->pitches[1])
498 crtc_state->mode_changed = true;
499
500 /*
501 * The x/y offsets must be even in case of horizontal/vertical
502 * chroma subsampling.
503 */
504 if (((new_state->src.x1 >> 16) & (fb->format->hsub - 1)) ||
505 ((new_state->src.y1 >> 16) & (fb->format->vsub - 1)))
506 return -EINVAL;
507 break;
508 case DRM_FORMAT_RGB565_A8:
509 case DRM_FORMAT_BGR565_A8:
510 case DRM_FORMAT_RGB888_A8:
511 case DRM_FORMAT_BGR888_A8:
512 case DRM_FORMAT_RGBX8888_A8:
513 case DRM_FORMAT_BGRX8888_A8:
514 alpha_eba = drm_plane_state_to_eba(state: new_state, plane: 1);
515 if (alpha_eba & 0x7)
516 return -EINVAL;
517
518 if (fb->pitches[1] < 1 || fb->pitches[1] > 16384)
519 return -EINVAL;
520
521 if (old_fb && old_fb->pitches[1] != fb->pitches[1])
522 crtc_state->mode_changed = true;
523 break;
524 }
525
526 return 0;
527}
528
529static void ipu_plane_atomic_disable(struct drm_plane *plane,
530 struct drm_atomic_state *state)
531{
532 struct ipu_plane *ipu_plane = to_ipu_plane(p: plane);
533
534 if (ipu_plane->dp)
535 ipu_dp_disable_channel(dp: ipu_plane->dp, sync: true);
536 ipu_plane->disabling = true;
537}
538
539static int ipu_chan_assign_axi_id(int ipu_chan)
540{
541 switch (ipu_chan) {
542 case IPUV3_CHANNEL_MEM_BG_SYNC:
543 return 1;
544 case IPUV3_CHANNEL_MEM_FG_SYNC:
545 return 2;
546 case IPUV3_CHANNEL_MEM_DC_SYNC:
547 return 3;
548 default:
549 return 0;
550 }
551}
552
553static void ipu_calculate_bursts(u32 width, u32 cpp, u32 stride,
554 u8 *burstsize, u8 *num_bursts)
555{
556 const unsigned int width_bytes = width * cpp;
557 unsigned int npb, bursts;
558
559 /* Maximum number of pixels per burst without overshooting stride */
560 for (npb = 64 / cpp; npb > 0; --npb) {
561 if (round_up(width_bytes, npb * cpp) <= stride)
562 break;
563 }
564 *burstsize = npb;
565
566 /* Maximum number of consecutive bursts without overshooting stride */
567 for (bursts = 8; bursts > 1; bursts /= 2) {
568 if (round_up(width_bytes, npb * cpp * bursts) <= stride)
569 break;
570 }
571 *num_bursts = bursts;
572}
573
574static void ipu_plane_atomic_update(struct drm_plane *plane,
575 struct drm_atomic_state *state)
576{
577 struct drm_plane_state *old_state = drm_atomic_get_old_plane_state(state,
578 plane);
579 struct ipu_plane *ipu_plane = to_ipu_plane(p: plane);
580 struct drm_plane_state *new_state = drm_atomic_get_new_plane_state(state,
581 plane);
582 struct ipu_plane_state *ipu_state = to_ipu_plane_state(p: new_state);
583 struct drm_crtc_state *crtc_state = new_state->crtc->state;
584 struct drm_framebuffer *fb = new_state->fb;
585 struct drm_rect *dst = &new_state->dst;
586 unsigned long eba, ubo, vbo;
587 unsigned long alpha_eba = 0;
588 enum ipu_color_space ics;
589 unsigned int axi_id = 0;
590 const struct drm_format_info *info;
591 u8 burstsize, num_bursts;
592 u32 width, height;
593 int active;
594
595 if (ipu_plane->dp_flow == IPU_DP_FLOW_SYNC_FG)
596 ipu_dp_set_window_pos(ipu_plane->dp, x_pos: dst->x1, y_pos: dst->y1);
597
598 switch (ipu_plane->dp_flow) {
599 case IPU_DP_FLOW_SYNC_BG:
600 if (new_state->normalized_zpos == 1) {
601 ipu_dp_set_global_alpha(dp: ipu_plane->dp,
602 enable: !fb->format->has_alpha, alpha: 0xff,
603 bg_chan: true);
604 } else {
605 ipu_dp_set_global_alpha(dp: ipu_plane->dp, enable: true, alpha: 0, bg_chan: true);
606 }
607 break;
608 case IPU_DP_FLOW_SYNC_FG:
609 if (new_state->normalized_zpos == 1) {
610 ipu_dp_set_global_alpha(dp: ipu_plane->dp,
611 enable: !fb->format->has_alpha, alpha: 0xff,
612 bg_chan: false);
613 }
614 break;
615 }
616
617 if (ipu_plane->dp_flow == IPU_DP_FLOW_SYNC_BG)
618 width = ipu_src_rect_width(state: new_state);
619 else
620 width = drm_rect_width(r: &new_state->src) >> 16;
621 height = drm_rect_height(r: &new_state->src) >> 16;
622
623 eba = drm_plane_state_to_eba(state: new_state, plane: 0);
624
625 /*
626 * Configure PRG channel and attached PRE, this changes the EBA to an
627 * internal SRAM location.
628 */
629 if (ipu_state->use_pre) {
630 axi_id = ipu_chan_assign_axi_id(ipu_chan: ipu_plane->dma);
631 ipu_prg_channel_configure(ipu_chan: ipu_plane->ipu_ch, axi_id, width,
632 height, stride: fb->pitches[0],
633 format: fb->format->format, modifier: fb->modifier,
634 eba: &eba);
635 }
636
637 if (!old_state->fb ||
638 old_state->fb->format->format != fb->format->format ||
639 old_state->color_encoding != new_state->color_encoding ||
640 old_state->color_range != new_state->color_range) {
641 ics = ipu_drm_fourcc_to_colorspace(drm_fourcc: fb->format->format);
642 switch (ipu_plane->dp_flow) {
643 case IPU_DP_FLOW_SYNC_BG:
644 ipu_dp_setup_channel(dp: ipu_plane->dp, ycbcr_enc: new_state->color_encoding,
645 range: new_state->color_range, in: ics,
646 out: IPUV3_COLORSPACE_RGB);
647 break;
648 case IPU_DP_FLOW_SYNC_FG:
649 ipu_dp_setup_channel(dp: ipu_plane->dp, ycbcr_enc: new_state->color_encoding,
650 range: new_state->color_range, in: ics,
651 out: IPUV3_COLORSPACE_UNKNOWN);
652 break;
653 }
654 }
655
656 if (old_state->fb && !drm_atomic_crtc_needs_modeset(state: crtc_state)) {
657 /* nothing to do if PRE is used */
658 if (ipu_state->use_pre)
659 return;
660 active = ipu_idmac_get_current_buffer(channel: ipu_plane->ipu_ch);
661 ipu_cpmem_set_buffer(ch: ipu_plane->ipu_ch, bufnum: !active, buf: eba);
662 ipu_idmac_select_buffer(channel: ipu_plane->ipu_ch, buf_num: !active);
663 if (ipu_plane_separate_alpha(ipu_plane)) {
664 active = ipu_idmac_get_current_buffer(channel: ipu_plane->alpha_ch);
665 ipu_cpmem_set_buffer(ch: ipu_plane->alpha_ch, bufnum: !active,
666 buf: alpha_eba);
667 ipu_idmac_select_buffer(channel: ipu_plane->alpha_ch, buf_num: !active);
668 }
669 return;
670 }
671
672 ics = ipu_drm_fourcc_to_colorspace(drm_fourcc: fb->format->format);
673 switch (ipu_plane->dp_flow) {
674 case IPU_DP_FLOW_SYNC_BG:
675 ipu_dp_setup_channel(dp: ipu_plane->dp, ycbcr_enc: DRM_COLOR_YCBCR_BT601,
676 range: DRM_COLOR_YCBCR_LIMITED_RANGE, in: ics,
677 out: IPUV3_COLORSPACE_RGB);
678 break;
679 case IPU_DP_FLOW_SYNC_FG:
680 ipu_dp_setup_channel(dp: ipu_plane->dp, ycbcr_enc: DRM_COLOR_YCBCR_BT601,
681 range: DRM_COLOR_YCBCR_LIMITED_RANGE, in: ics,
682 out: IPUV3_COLORSPACE_UNKNOWN);
683 break;
684 }
685
686 ipu_dmfc_config_wait4eot(dmfc: ipu_plane->dmfc, width);
687
688 info = drm_format_info(format: fb->format->format);
689 ipu_calculate_bursts(width, cpp: info->cpp[0], stride: fb->pitches[0],
690 burstsize: &burstsize, num_bursts: &num_bursts);
691
692 ipu_cpmem_zero(ch: ipu_plane->ipu_ch);
693 ipu_cpmem_set_resolution(ch: ipu_plane->ipu_ch, xres: width, yres: height);
694 ipu_cpmem_set_fmt(ch: ipu_plane->ipu_ch, drm_fourcc: fb->format->format);
695 ipu_cpmem_set_burstsize(ch: ipu_plane->ipu_ch, burstsize);
696 ipu_cpmem_set_high_priority(ch: ipu_plane->ipu_ch);
697 ipu_idmac_enable_watermark(channel: ipu_plane->ipu_ch, enable: true);
698 ipu_idmac_set_double_buffer(channel: ipu_plane->ipu_ch, doublebuffer: 1);
699 ipu_cpmem_set_stride(ch: ipu_plane->ipu_ch, stride: fb->pitches[0]);
700 ipu_cpmem_set_axi_id(ch: ipu_plane->ipu_ch, id: axi_id);
701
702 switch (fb->format->format) {
703 case DRM_FORMAT_YUV420:
704 case DRM_FORMAT_YVU420:
705 case DRM_FORMAT_YUV422:
706 case DRM_FORMAT_YVU422:
707 case DRM_FORMAT_YUV444:
708 case DRM_FORMAT_YVU444:
709 ubo = drm_plane_state_to_ubo(state: new_state);
710 vbo = drm_plane_state_to_vbo(state: new_state);
711 if (fb->format->format == DRM_FORMAT_YVU420 ||
712 fb->format->format == DRM_FORMAT_YVU422 ||
713 fb->format->format == DRM_FORMAT_YVU444)
714 swap(ubo, vbo);
715
716 ipu_cpmem_set_yuv_planar_full(ch: ipu_plane->ipu_ch,
717 uv_stride: fb->pitches[1], u_offset: ubo, v_offset: vbo);
718
719 dev_dbg(ipu_plane->base.dev->dev,
720 "phy = %lu %lu %lu, x = %d, y = %d", eba, ubo, vbo,
721 new_state->src.x1 >> 16, new_state->src.y1 >> 16);
722 break;
723 case DRM_FORMAT_NV12:
724 case DRM_FORMAT_NV16:
725 ubo = drm_plane_state_to_ubo(state: new_state);
726
727 ipu_cpmem_set_yuv_planar_full(ch: ipu_plane->ipu_ch,
728 uv_stride: fb->pitches[1], u_offset: ubo, v_offset: ubo);
729
730 dev_dbg(ipu_plane->base.dev->dev,
731 "phy = %lu %lu, x = %d, y = %d", eba, ubo,
732 new_state->src.x1 >> 16, new_state->src.y1 >> 16);
733 break;
734 case DRM_FORMAT_RGB565_A8:
735 case DRM_FORMAT_BGR565_A8:
736 case DRM_FORMAT_RGB888_A8:
737 case DRM_FORMAT_BGR888_A8:
738 case DRM_FORMAT_RGBX8888_A8:
739 case DRM_FORMAT_BGRX8888_A8:
740 alpha_eba = drm_plane_state_to_eba(state: new_state, plane: 1);
741 num_bursts = 0;
742
743 dev_dbg(ipu_plane->base.dev->dev, "phys = %lu %lu, x = %d, y = %d",
744 eba, alpha_eba, new_state->src.x1 >> 16,
745 new_state->src.y1 >> 16);
746
747 ipu_cpmem_set_burstsize(ch: ipu_plane->ipu_ch, burstsize: 16);
748
749 ipu_cpmem_zero(ch: ipu_plane->alpha_ch);
750 ipu_cpmem_set_resolution(ch: ipu_plane->alpha_ch, xres: width, yres: height);
751 ipu_cpmem_set_format_passthrough(ch: ipu_plane->alpha_ch, width: 8);
752 ipu_cpmem_set_high_priority(ch: ipu_plane->alpha_ch);
753 ipu_idmac_set_double_buffer(channel: ipu_plane->alpha_ch, doublebuffer: 1);
754 ipu_cpmem_set_stride(ch: ipu_plane->alpha_ch, stride: fb->pitches[1]);
755 ipu_cpmem_set_burstsize(ch: ipu_plane->alpha_ch, burstsize: 16);
756 ipu_cpmem_set_buffer(ch: ipu_plane->alpha_ch, bufnum: 0, buf: alpha_eba);
757 ipu_cpmem_set_buffer(ch: ipu_plane->alpha_ch, bufnum: 1, buf: alpha_eba);
758 break;
759 default:
760 dev_dbg(ipu_plane->base.dev->dev, "phys = %lu, x = %d, y = %d",
761 eba, new_state->src.x1 >> 16, new_state->src.y1 >> 16);
762 break;
763 }
764 ipu_cpmem_set_buffer(ch: ipu_plane->ipu_ch, bufnum: 0, buf: eba);
765 ipu_cpmem_set_buffer(ch: ipu_plane->ipu_ch, bufnum: 1, buf: eba);
766 ipu_idmac_lock_enable(channel: ipu_plane->ipu_ch, num_bursts);
767 ipu_plane_enable(ipu_plane);
768}
769
770static const struct drm_plane_helper_funcs ipu_plane_helper_funcs = {
771 .atomic_check = ipu_plane_atomic_check,
772 .atomic_disable = ipu_plane_atomic_disable,
773 .atomic_update = ipu_plane_atomic_update,
774};
775
776bool ipu_plane_atomic_update_pending(struct drm_plane *plane)
777{
778 struct ipu_plane *ipu_plane = to_ipu_plane(p: plane);
779 struct drm_plane_state *state = plane->state;
780 struct ipu_plane_state *ipu_state = to_ipu_plane_state(p: state);
781
782 /* disabled crtcs must not block the update */
783 if (!state->crtc)
784 return false;
785
786 if (ipu_state->use_pre)
787 return ipu_prg_channel_configure_pending(ipu_chan: ipu_plane->ipu_ch);
788
789 /*
790 * Pretend no update is pending in the non-PRE/PRG case. For this to
791 * happen, an atomic update would have to be deferred until after the
792 * start of the next frame and simultaneously interrupt latency would
793 * have to be high enough to let the atomic update finish and issue an
794 * event before the previous end of frame interrupt handler can be
795 * executed.
796 */
797 return false;
798}
799int ipu_planes_assign_pre(struct drm_device *dev,
800 struct drm_atomic_state *state)
801{
802 struct drm_crtc_state *old_crtc_state, *crtc_state;
803 struct drm_plane_state *plane_state;
804 struct ipu_plane_state *ipu_state;
805 struct ipu_plane *ipu_plane;
806 struct drm_plane *plane;
807 struct drm_crtc *crtc;
808 int available_pres = ipu_prg_max_active_channels();
809 int ret, i;
810
811 for_each_oldnew_crtc_in_state(state, crtc, old_crtc_state, crtc_state, i) {
812 ret = drm_atomic_add_affected_planes(state, crtc);
813 if (ret)
814 return ret;
815 }
816
817 /*
818 * We are going over the planes in 2 passes: first we assign PREs to
819 * planes with a tiling modifier, which need the PREs to resolve into
820 * linear. Any failure to assign a PRE there is fatal. In the second
821 * pass we try to assign PREs to linear FBs, to improve memory access
822 * patterns for them. Failure at this point is non-fatal, as we can
823 * scan out linear FBs without a PRE.
824 */
825 for_each_new_plane_in_state(state, plane, plane_state, i) {
826 ipu_state = to_ipu_plane_state(p: plane_state);
827 ipu_plane = to_ipu_plane(p: plane);
828
829 if (!plane_state->fb) {
830 ipu_state->use_pre = false;
831 continue;
832 }
833
834 if (!(plane_state->fb->flags & DRM_MODE_FB_MODIFIERS) ||
835 plane_state->fb->modifier == DRM_FORMAT_MOD_LINEAR)
836 continue;
837
838 if (!ipu_prg_present(ipu: ipu_plane->ipu) || !available_pres)
839 return -EINVAL;
840
841 if (!ipu_prg_format_supported(ipu: ipu_plane->ipu,
842 format: plane_state->fb->format->format,
843 modifier: plane_state->fb->modifier))
844 return -EINVAL;
845
846 ipu_state->use_pre = true;
847 available_pres--;
848 }
849
850 for_each_new_plane_in_state(state, plane, plane_state, i) {
851 ipu_state = to_ipu_plane_state(p: plane_state);
852 ipu_plane = to_ipu_plane(p: plane);
853
854 if (!plane_state->fb) {
855 ipu_state->use_pre = false;
856 continue;
857 }
858
859 if ((plane_state->fb->flags & DRM_MODE_FB_MODIFIERS) &&
860 plane_state->fb->modifier != DRM_FORMAT_MOD_LINEAR)
861 continue;
862
863 /* make sure that modifier is initialized */
864 plane_state->fb->modifier = DRM_FORMAT_MOD_LINEAR;
865
866 if (ipu_prg_present(ipu: ipu_plane->ipu) && available_pres &&
867 ipu_prg_format_supported(ipu: ipu_plane->ipu,
868 format: plane_state->fb->format->format,
869 modifier: plane_state->fb->modifier)) {
870 ipu_state->use_pre = true;
871 available_pres--;
872 } else {
873 ipu_state->use_pre = false;
874 }
875 }
876
877 return 0;
878}
879
880struct ipu_plane *ipu_plane_init(struct drm_device *dev, struct ipu_soc *ipu,
881 int dma, int dp, unsigned int possible_crtcs,
882 enum drm_plane_type type)
883{
884 struct ipu_plane *ipu_plane;
885 const uint64_t *modifiers = ipu_format_modifiers;
886 unsigned int zpos = (type == DRM_PLANE_TYPE_PRIMARY) ? 0 : 1;
887 unsigned int format_count;
888 const uint32_t *formats;
889 int ret;
890
891 DRM_DEBUG_KMS("channel %d, dp flow %d, possible_crtcs=0x%x\n",
892 dma, dp, possible_crtcs);
893
894 if (dp == IPU_DP_FLOW_SYNC_BG || dp == IPU_DP_FLOW_SYNC_FG) {
895 formats = ipu_plane_all_formats;
896 format_count = ARRAY_SIZE(ipu_plane_all_formats);
897 } else {
898 formats = ipu_plane_rgb_formats;
899 format_count = ARRAY_SIZE(ipu_plane_rgb_formats);
900 }
901
902 if (ipu_prg_present(ipu))
903 modifiers = pre_format_modifiers;
904
905 ipu_plane = drmm_universal_plane_alloc(dev, struct ipu_plane, base,
906 possible_crtcs, &ipu_plane_funcs,
907 formats, format_count, modifiers,
908 type, NULL);
909 if (IS_ERR(ptr: ipu_plane)) {
910 DRM_ERROR("failed to allocate and initialize %s plane\n",
911 zpos ? "overlay" : "primary");
912 return ipu_plane;
913 }
914
915 ipu_plane->ipu = ipu;
916 ipu_plane->dma = dma;
917 ipu_plane->dp_flow = dp;
918
919 drm_plane_helper_add(plane: &ipu_plane->base, funcs: &ipu_plane_helper_funcs);
920
921 if (dp == IPU_DP_FLOW_SYNC_BG || dp == IPU_DP_FLOW_SYNC_FG)
922 ret = drm_plane_create_zpos_property(plane: &ipu_plane->base, zpos, min: 0,
923 max: 1);
924 else
925 ret = drm_plane_create_zpos_immutable_property(plane: &ipu_plane->base,
926 zpos: 0);
927 if (ret)
928 return ERR_PTR(error: ret);
929
930 ret = drm_plane_create_color_properties(plane: &ipu_plane->base,
931 BIT(DRM_COLOR_YCBCR_BT601) |
932 BIT(DRM_COLOR_YCBCR_BT709),
933 BIT(DRM_COLOR_YCBCR_LIMITED_RANGE),
934 default_encoding: DRM_COLOR_YCBCR_BT601,
935 default_range: DRM_COLOR_YCBCR_LIMITED_RANGE);
936 if (ret)
937 return ERR_PTR(error: ret);
938
939 ret = ipu_plane_get_resources(dev, ipu_plane);
940 if (ret) {
941 DRM_ERROR("failed to get %s plane resources: %pe\n",
942 zpos ? "overlay" : "primary", &ret);
943 return ERR_PTR(error: ret);
944 }
945
946 return ipu_plane;
947}
948

source code of linux/drivers/gpu/drm/imx/ipuv3/ipuv3-plane.c