1 /*
2  * Copyright 2012-15 Advanced Micro Devices, Inc.
3  *
4  * Permission is hereby granted, free of charge, to any person obtaining a
5  * copy of this software and associated documentation files (the "Software"),
6  * to deal in the Software without restriction, including without limitation
7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8  * and/or sell copies of the Software, and to permit persons to whom the
9  * Software is furnished to do so, subject to the following conditions:
10  *
11  * The above copyright notice and this permission notice shall be included in
12  * all copies or substantial portions of the Software.
13  *
14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
17  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
18  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
19  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
20  * OTHER DEALINGS IN THE SOFTWARE.
21  *
22  * Authors: AMD
23  *
24  */
25 
26 #include <linux/slab.h>
27 
28 #include "dm_services.h"
29 
30 #include "resource.h"
31 #include "include/irq_service_interface.h"
32 #include "link_encoder.h"
33 #include "stream_encoder.h"
34 #include "opp.h"
35 #include "timing_generator.h"
36 #include "transform.h"
37 #include "dccg.h"
38 #include "dchubbub.h"
39 #include "dpp.h"
40 #include "core_types.h"
41 #include "set_mode_types.h"
42 #include "virtual/virtual_stream_encoder.h"
43 #include "dpcd_defs.h"
44 #include "link_enc_cfg.h"
45 #include "dc_link_dp.h"
46 
47 #if defined(CONFIG_DRM_AMD_DC_SI)
48 #include "dce60/dce60_resource.h"
49 #endif
50 #include "dce80/dce80_resource.h"
51 #include "dce100/dce100_resource.h"
52 #include "dce110/dce110_resource.h"
53 #include "dce112/dce112_resource.h"
54 #include "dce120/dce120_resource.h"
55 #if defined(CONFIG_DRM_AMD_DC_DCN)
56 #include "dcn10/dcn10_resource.h"
57 #include "dcn20/dcn20_resource.h"
58 #include "dcn21/dcn21_resource.h"
59 #include "dcn201/dcn201_resource.h"
60 #include "dcn30/dcn30_resource.h"
61 #include "dcn301/dcn301_resource.h"
62 #include "dcn302/dcn302_resource.h"
63 #include "dcn303/dcn303_resource.h"
64 #include "dcn31/dcn31_resource.h"
65 #endif
66 
67 #define DC_LOGGER_INIT(logger)
68 
69 enum dce_version resource_parse_asic_id(struct hw_asic_id asic_id)
70 {
71 	enum dce_version dc_version = DCE_VERSION_UNKNOWN;
72 	switch (asic_id.chip_family) {
73 
74 #if defined(CONFIG_DRM_AMD_DC_SI)
75 	case FAMILY_SI:
76 		if (ASIC_REV_IS_TAHITI_P(asic_id.hw_internal_rev) ||
77 		    ASIC_REV_IS_PITCAIRN_PM(asic_id.hw_internal_rev) ||
78 		    ASIC_REV_IS_CAPEVERDE_M(asic_id.hw_internal_rev))
79 			dc_version = DCE_VERSION_6_0;
80 		else if (ASIC_REV_IS_OLAND_M(asic_id.hw_internal_rev))
81 			dc_version = DCE_VERSION_6_4;
82 		else
83 			dc_version = DCE_VERSION_6_1;
84 		break;
85 #endif
86 	case FAMILY_CI:
87 		dc_version = DCE_VERSION_8_0;
88 		break;
89 	case FAMILY_KV:
90 		if (ASIC_REV_IS_KALINDI(asic_id.hw_internal_rev) ||
91 		    ASIC_REV_IS_BHAVANI(asic_id.hw_internal_rev) ||
92 		    ASIC_REV_IS_GODAVARI(asic_id.hw_internal_rev))
93 			dc_version = DCE_VERSION_8_3;
94 		else
95 			dc_version = DCE_VERSION_8_1;
96 		break;
97 	case FAMILY_CZ:
98 		dc_version = DCE_VERSION_11_0;
99 		break;
100 
101 	case FAMILY_VI:
102 		if (ASIC_REV_IS_TONGA_P(asic_id.hw_internal_rev) ||
103 				ASIC_REV_IS_FIJI_P(asic_id.hw_internal_rev)) {
104 			dc_version = DCE_VERSION_10_0;
105 			break;
106 		}
107 		if (ASIC_REV_IS_POLARIS10_P(asic_id.hw_internal_rev) ||
108 				ASIC_REV_IS_POLARIS11_M(asic_id.hw_internal_rev) ||
109 				ASIC_REV_IS_POLARIS12_V(asic_id.hw_internal_rev)) {
110 			dc_version = DCE_VERSION_11_2;
111 		}
112 		if (ASIC_REV_IS_VEGAM(asic_id.hw_internal_rev))
113 			dc_version = DCE_VERSION_11_22;
114 		break;
115 	case FAMILY_AI:
116 		if (ASICREV_IS_VEGA20_P(asic_id.hw_internal_rev))
117 			dc_version = DCE_VERSION_12_1;
118 		else
119 			dc_version = DCE_VERSION_12_0;
120 		break;
121 #if defined(CONFIG_DRM_AMD_DC_DCN)
122 	case FAMILY_RV:
123 		dc_version = DCN_VERSION_1_0;
124 		if (ASICREV_IS_RAVEN2(asic_id.hw_internal_rev))
125 			dc_version = DCN_VERSION_1_01;
126 		if (ASICREV_IS_RENOIR(asic_id.hw_internal_rev))
127 			dc_version = DCN_VERSION_2_1;
128 		if (ASICREV_IS_GREEN_SARDINE(asic_id.hw_internal_rev))
129 			dc_version = DCN_VERSION_2_1;
130 		break;
131 
132 	case FAMILY_NV:
133 		dc_version = DCN_VERSION_2_0;
134 		if (asic_id.chip_id == DEVICE_ID_NV_13FE) {
135 			dc_version = DCN_VERSION_2_01;
136 			break;
137 		}
138 		if (ASICREV_IS_SIENNA_CICHLID_P(asic_id.hw_internal_rev))
139 			dc_version = DCN_VERSION_3_0;
140 		if (ASICREV_IS_DIMGREY_CAVEFISH_P(asic_id.hw_internal_rev))
141 			dc_version = DCN_VERSION_3_02;
142 		if (ASICREV_IS_BEIGE_GOBY_P(asic_id.hw_internal_rev))
143 			dc_version = DCN_VERSION_3_03;
144 		break;
145 
146 	case FAMILY_VGH:
147 		dc_version = DCN_VERSION_3_01;
148 		break;
149 
150 	case FAMILY_YELLOW_CARP:
151 		if (ASICREV_IS_YELLOW_CARP(asic_id.hw_internal_rev))
152 			dc_version = DCN_VERSION_3_1;
153 		break;
154 #endif
155 
156 	default:
157 		dc_version = DCE_VERSION_UNKNOWN;
158 		break;
159 	}
160 	return dc_version;
161 }
162 
163 struct resource_pool *dc_create_resource_pool(struct dc  *dc,
164 					      const struct dc_init_data *init_data,
165 					      enum dce_version dc_version)
166 {
167 	struct resource_pool *res_pool = NULL;
168 
169 	switch (dc_version) {
170 #if defined(CONFIG_DRM_AMD_DC_SI)
171 	case DCE_VERSION_6_0:
172 		res_pool = dce60_create_resource_pool(
173 			init_data->num_virtual_links, dc);
174 		break;
175 	case DCE_VERSION_6_1:
176 		res_pool = dce61_create_resource_pool(
177 			init_data->num_virtual_links, dc);
178 		break;
179 	case DCE_VERSION_6_4:
180 		res_pool = dce64_create_resource_pool(
181 			init_data->num_virtual_links, dc);
182 		break;
183 #endif
184 	case DCE_VERSION_8_0:
185 		res_pool = dce80_create_resource_pool(
186 				init_data->num_virtual_links, dc);
187 		break;
188 	case DCE_VERSION_8_1:
189 		res_pool = dce81_create_resource_pool(
190 				init_data->num_virtual_links, dc);
191 		break;
192 	case DCE_VERSION_8_3:
193 		res_pool = dce83_create_resource_pool(
194 				init_data->num_virtual_links, dc);
195 		break;
196 	case DCE_VERSION_10_0:
197 		res_pool = dce100_create_resource_pool(
198 				init_data->num_virtual_links, dc);
199 		break;
200 	case DCE_VERSION_11_0:
201 		res_pool = dce110_create_resource_pool(
202 				init_data->num_virtual_links, dc,
203 				init_data->asic_id);
204 		break;
205 	case DCE_VERSION_11_2:
206 	case DCE_VERSION_11_22:
207 		res_pool = dce112_create_resource_pool(
208 				init_data->num_virtual_links, dc);
209 		break;
210 	case DCE_VERSION_12_0:
211 	case DCE_VERSION_12_1:
212 		res_pool = dce120_create_resource_pool(
213 				init_data->num_virtual_links, dc);
214 		break;
215 
216 #if defined(CONFIG_DRM_AMD_DC_DCN)
217 	case DCN_VERSION_1_0:
218 	case DCN_VERSION_1_01:
219 		res_pool = dcn10_create_resource_pool(init_data, dc);
220 		break;
221 	case DCN_VERSION_2_0:
222 		res_pool = dcn20_create_resource_pool(init_data, dc);
223 		break;
224 	case DCN_VERSION_2_1:
225 		res_pool = dcn21_create_resource_pool(init_data, dc);
226 		break;
227 	case DCN_VERSION_2_01:
228 		res_pool = dcn201_create_resource_pool(init_data, dc);
229 		break;
230 	case DCN_VERSION_3_0:
231 		res_pool = dcn30_create_resource_pool(init_data, dc);
232 		break;
233 	case DCN_VERSION_3_01:
234 		res_pool = dcn301_create_resource_pool(init_data, dc);
235 		break;
236 	case DCN_VERSION_3_02:
237 		res_pool = dcn302_create_resource_pool(init_data, dc);
238 		break;
239 	case DCN_VERSION_3_03:
240 		res_pool = dcn303_create_resource_pool(init_data, dc);
241 		break;
242 	case DCN_VERSION_3_1:
243 		res_pool = dcn31_create_resource_pool(init_data, dc);
244 		break;
245 #endif
246 	default:
247 		break;
248 	}
249 
250 	if (res_pool != NULL) {
251 		if (dc->ctx->dc_bios->fw_info_valid) {
252 			res_pool->ref_clocks.xtalin_clock_inKhz =
253 				dc->ctx->dc_bios->fw_info.pll_info.crystal_frequency;
254 			/* initialize with firmware data first, no all
255 			 * ASIC have DCCG SW component. FPGA or
256 			 * simulation need initialization of
257 			 * dccg_ref_clock_inKhz, dchub_ref_clock_inKhz
258 			 * with xtalin_clock_inKhz
259 			 */
260 			res_pool->ref_clocks.dccg_ref_clock_inKhz =
261 				res_pool->ref_clocks.xtalin_clock_inKhz;
262 			res_pool->ref_clocks.dchub_ref_clock_inKhz =
263 				res_pool->ref_clocks.xtalin_clock_inKhz;
264 		} else
265 			ASSERT_CRITICAL(false);
266 	}
267 
268 	return res_pool;
269 }
270 
271 void dc_destroy_resource_pool(struct dc  *dc)
272 {
273 	if (dc) {
274 		if (dc->res_pool)
275 			dc->res_pool->funcs->destroy(&dc->res_pool);
276 
277 		kfree(dc->hwseq);
278 	}
279 }
280 
281 static void update_num_audio(
282 	const struct resource_straps *straps,
283 	unsigned int *num_audio,
284 	struct audio_support *aud_support)
285 {
286 	aud_support->dp_audio = true;
287 	aud_support->hdmi_audio_native = false;
288 	aud_support->hdmi_audio_on_dongle = false;
289 
290 	if (straps->hdmi_disable == 0) {
291 		if (straps->dc_pinstraps_audio & 0x2) {
292 			aud_support->hdmi_audio_on_dongle = true;
293 			aud_support->hdmi_audio_native = true;
294 		}
295 	}
296 
297 	switch (straps->audio_stream_number) {
298 	case 0: /* multi streams supported */
299 		break;
300 	case 1: /* multi streams not supported */
301 		*num_audio = 1;
302 		break;
303 	default:
304 		DC_ERR("DC: unexpected audio fuse!\n");
305 	}
306 }
307 
308 bool resource_construct(
309 	unsigned int num_virtual_links,
310 	struct dc  *dc,
311 	struct resource_pool *pool,
312 	const struct resource_create_funcs *create_funcs)
313 {
314 	struct dc_context *ctx = dc->ctx;
315 	const struct resource_caps *caps = pool->res_cap;
316 	int i;
317 	unsigned int num_audio = caps->num_audio;
318 	struct resource_straps straps = {0};
319 
320 	if (create_funcs->read_dce_straps)
321 		create_funcs->read_dce_straps(dc->ctx, &straps);
322 
323 	pool->audio_count = 0;
324 	if (create_funcs->create_audio) {
325 		/* find the total number of streams available via the
326 		 * AZALIA_F0_CODEC_PIN_CONTROL_RESPONSE_CONFIGURATION_DEFAULT
327 		 * registers (one for each pin) starting from pin 1
328 		 * up to the max number of audio pins.
329 		 * We stop on the first pin where
330 		 * PORT_CONNECTIVITY == 1 (as instructed by HW team).
331 		 */
332 		update_num_audio(&straps, &num_audio, &pool->audio_support);
333 		for (i = 0; i < caps->num_audio; i++) {
334 			struct audio *aud = create_funcs->create_audio(ctx, i);
335 
336 			if (aud == NULL) {
337 				DC_ERR("DC: failed to create audio!\n");
338 				return false;
339 			}
340 			if (!aud->funcs->endpoint_valid(aud)) {
341 				aud->funcs->destroy(&aud);
342 				break;
343 			}
344 			pool->audios[i] = aud;
345 			pool->audio_count++;
346 		}
347 	}
348 
349 	pool->stream_enc_count = 0;
350 	if (create_funcs->create_stream_encoder) {
351 		for (i = 0; i < caps->num_stream_encoder; i++) {
352 			pool->stream_enc[i] = create_funcs->create_stream_encoder(i, ctx);
353 			if (pool->stream_enc[i] == NULL)
354 				DC_ERR("DC: failed to create stream_encoder!\n");
355 			pool->stream_enc_count++;
356 		}
357 	}
358 
359 #if defined(CONFIG_DRM_AMD_DC_DCN)
360 	pool->hpo_dp_stream_enc_count = 0;
361 	if (create_funcs->create_hpo_dp_stream_encoder) {
362 		for (i = 0; i < caps->num_hpo_dp_stream_encoder; i++) {
363 			pool->hpo_dp_stream_enc[i] = create_funcs->create_hpo_dp_stream_encoder(i+ENGINE_ID_HPO_DP_0, ctx);
364 			if (pool->hpo_dp_stream_enc[i] == NULL)
365 				DC_ERR("DC: failed to create HPO DP stream encoder!\n");
366 			pool->hpo_dp_stream_enc_count++;
367 
368 		}
369 	}
370 
371 	pool->hpo_dp_link_enc_count = 0;
372 	if (create_funcs->create_hpo_dp_link_encoder) {
373 		for (i = 0; i < caps->num_hpo_dp_link_encoder; i++) {
374 			pool->hpo_dp_link_enc[i] = create_funcs->create_hpo_dp_link_encoder(i, ctx);
375 			if (pool->hpo_dp_link_enc[i] == NULL)
376 				DC_ERR("DC: failed to create HPO DP link encoder!\n");
377 			pool->hpo_dp_link_enc_count++;
378 		}
379 	}
380 #endif
381 
382 #if defined(CONFIG_DRM_AMD_DC_DCN)
383 	for (i = 0; i < caps->num_mpc_3dlut; i++) {
384 		pool->mpc_lut[i] = dc_create_3dlut_func();
385 		if (pool->mpc_lut[i] == NULL)
386 			DC_ERR("DC: failed to create MPC 3dlut!\n");
387 		pool->mpc_shaper[i] = dc_create_transfer_func();
388 		if (pool->mpc_shaper[i] == NULL)
389 			DC_ERR("DC: failed to create MPC shaper!\n");
390 	}
391 #endif
392 	dc->caps.dynamic_audio = false;
393 	if (pool->audio_count < pool->stream_enc_count) {
394 		dc->caps.dynamic_audio = true;
395 	}
396 	for (i = 0; i < num_virtual_links; i++) {
397 		pool->stream_enc[pool->stream_enc_count] =
398 			virtual_stream_encoder_create(
399 					ctx, ctx->dc_bios);
400 		if (pool->stream_enc[pool->stream_enc_count] == NULL) {
401 			DC_ERR("DC: failed to create stream_encoder!\n");
402 			return false;
403 		}
404 		pool->stream_enc_count++;
405 	}
406 
407 	dc->hwseq = create_funcs->create_hwseq(ctx);
408 
409 	return true;
410 }
411 static int find_matching_clock_source(
412 		const struct resource_pool *pool,
413 		struct clock_source *clock_source)
414 {
415 
416 	int i;
417 
418 	for (i = 0; i < pool->clk_src_count; i++) {
419 		if (pool->clock_sources[i] == clock_source)
420 			return i;
421 	}
422 	return -1;
423 }
424 
425 void resource_unreference_clock_source(
426 		struct resource_context *res_ctx,
427 		const struct resource_pool *pool,
428 		struct clock_source *clock_source)
429 {
430 	int i = find_matching_clock_source(pool, clock_source);
431 
432 	if (i > -1)
433 		res_ctx->clock_source_ref_count[i]--;
434 
435 	if (pool->dp_clock_source == clock_source)
436 		res_ctx->dp_clock_source_ref_count--;
437 }
438 
439 void resource_reference_clock_source(
440 		struct resource_context *res_ctx,
441 		const struct resource_pool *pool,
442 		struct clock_source *clock_source)
443 {
444 	int i = find_matching_clock_source(pool, clock_source);
445 
446 	if (i > -1)
447 		res_ctx->clock_source_ref_count[i]++;
448 
449 	if (pool->dp_clock_source == clock_source)
450 		res_ctx->dp_clock_source_ref_count++;
451 }
452 
453 int resource_get_clock_source_reference(
454 		struct resource_context *res_ctx,
455 		const struct resource_pool *pool,
456 		struct clock_source *clock_source)
457 {
458 	int i = find_matching_clock_source(pool, clock_source);
459 
460 	if (i > -1)
461 		return res_ctx->clock_source_ref_count[i];
462 
463 	if (pool->dp_clock_source == clock_source)
464 		return res_ctx->dp_clock_source_ref_count;
465 
466 	return -1;
467 }
468 
469 bool resource_are_vblanks_synchronizable(
470 	struct dc_stream_state *stream1,
471 	struct dc_stream_state *stream2)
472 {
473 	uint32_t base60_refresh_rates[] = {10, 20, 5};
474 	uint8_t i;
475 	uint8_t rr_count = ARRAY_SIZE(base60_refresh_rates);
476 	uint64_t frame_time_diff;
477 
478 	if (stream1->ctx->dc->config.vblank_alignment_dto_params &&
479 		stream1->ctx->dc->config.vblank_alignment_max_frame_time_diff > 0 &&
480 		dc_is_dp_signal(stream1->signal) &&
481 		dc_is_dp_signal(stream2->signal) &&
482 		false == stream1->has_non_synchronizable_pclk &&
483 		false == stream2->has_non_synchronizable_pclk &&
484 		stream1->timing.flags.VBLANK_SYNCHRONIZABLE &&
485 		stream2->timing.flags.VBLANK_SYNCHRONIZABLE) {
486 		/* disable refresh rates higher than 60Hz for now */
487 		if (stream1->timing.pix_clk_100hz*100/stream1->timing.h_total/
488 				stream1->timing.v_total > 60)
489 			return false;
490 		if (stream2->timing.pix_clk_100hz*100/stream2->timing.h_total/
491 				stream2->timing.v_total > 60)
492 			return false;
493 		frame_time_diff = (uint64_t)10000 *
494 			stream1->timing.h_total *
495 			stream1->timing.v_total *
496 			stream2->timing.pix_clk_100hz;
497 		frame_time_diff = div_u64(frame_time_diff, stream1->timing.pix_clk_100hz);
498 		frame_time_diff = div_u64(frame_time_diff, stream2->timing.h_total);
499 		frame_time_diff = div_u64(frame_time_diff, stream2->timing.v_total);
500 		for (i = 0; i < rr_count; i++) {
501 			int64_t diff = (int64_t)div_u64(frame_time_diff * base60_refresh_rates[i], 10) - 10000;
502 
503 			if (diff < 0)
504 				diff = -diff;
505 			if (diff < stream1->ctx->dc->config.vblank_alignment_max_frame_time_diff)
506 				return true;
507 		}
508 	}
509 	return false;
510 }
511 
512 bool resource_are_streams_timing_synchronizable(
513 	struct dc_stream_state *stream1,
514 	struct dc_stream_state *stream2)
515 {
516 	if (stream1->timing.h_total != stream2->timing.h_total)
517 		return false;
518 
519 	if (stream1->timing.v_total != stream2->timing.v_total)
520 		return false;
521 
522 	if (stream1->timing.h_addressable
523 				!= stream2->timing.h_addressable)
524 		return false;
525 
526 	if (stream1->timing.v_addressable
527 				!= stream2->timing.v_addressable)
528 		return false;
529 
530 	if (stream1->timing.v_front_porch
531 				!= stream2->timing.v_front_porch)
532 		return false;
533 
534 	if (stream1->timing.pix_clk_100hz
535 				!= stream2->timing.pix_clk_100hz)
536 		return false;
537 
538 	if (stream1->clamping.c_depth != stream2->clamping.c_depth)
539 		return false;
540 
541 	if (stream1->phy_pix_clk != stream2->phy_pix_clk
542 			&& (!dc_is_dp_signal(stream1->signal)
543 			|| !dc_is_dp_signal(stream2->signal)))
544 		return false;
545 
546 	if (stream1->view_format != stream2->view_format)
547 		return false;
548 
549 	if (stream1->ignore_msa_timing_param || stream2->ignore_msa_timing_param)
550 		return false;
551 
552 	return true;
553 }
554 static bool is_dp_and_hdmi_sharable(
555 		struct dc_stream_state *stream1,
556 		struct dc_stream_state *stream2)
557 {
558 	if (stream1->ctx->dc->caps.disable_dp_clk_share)
559 		return false;
560 
561 	if (stream1->clamping.c_depth != COLOR_DEPTH_888 ||
562 		stream2->clamping.c_depth != COLOR_DEPTH_888)
563 		return false;
564 
565 	return true;
566 
567 }
568 
569 static bool is_sharable_clk_src(
570 	const struct pipe_ctx *pipe_with_clk_src,
571 	const struct pipe_ctx *pipe)
572 {
573 	if (pipe_with_clk_src->clock_source == NULL)
574 		return false;
575 
576 	if (pipe_with_clk_src->stream->signal == SIGNAL_TYPE_VIRTUAL)
577 		return false;
578 
579 	if (dc_is_dp_signal(pipe_with_clk_src->stream->signal) ||
580 		(dc_is_dp_signal(pipe->stream->signal) &&
581 		!is_dp_and_hdmi_sharable(pipe_with_clk_src->stream,
582 				     pipe->stream)))
583 		return false;
584 
585 	if (dc_is_hdmi_signal(pipe_with_clk_src->stream->signal)
586 			&& dc_is_dual_link_signal(pipe->stream->signal))
587 		return false;
588 
589 	if (dc_is_hdmi_signal(pipe->stream->signal)
590 			&& dc_is_dual_link_signal(pipe_with_clk_src->stream->signal))
591 		return false;
592 
593 	if (!resource_are_streams_timing_synchronizable(
594 			pipe_with_clk_src->stream, pipe->stream))
595 		return false;
596 
597 	return true;
598 }
599 
600 struct clock_source *resource_find_used_clk_src_for_sharing(
601 					struct resource_context *res_ctx,
602 					struct pipe_ctx *pipe_ctx)
603 {
604 	int i;
605 
606 	for (i = 0; i < MAX_PIPES; i++) {
607 		if (is_sharable_clk_src(&res_ctx->pipe_ctx[i], pipe_ctx))
608 			return res_ctx->pipe_ctx[i].clock_source;
609 	}
610 
611 	return NULL;
612 }
613 
614 static enum pixel_format convert_pixel_format_to_dalsurface(
615 		enum surface_pixel_format surface_pixel_format)
616 {
617 	enum pixel_format dal_pixel_format = PIXEL_FORMAT_UNKNOWN;
618 
619 	switch (surface_pixel_format) {
620 	case SURFACE_PIXEL_FORMAT_GRPH_PALETA_256_COLORS:
621 		dal_pixel_format = PIXEL_FORMAT_INDEX8;
622 		break;
623 	case SURFACE_PIXEL_FORMAT_GRPH_ARGB1555:
624 		dal_pixel_format = PIXEL_FORMAT_RGB565;
625 		break;
626 	case SURFACE_PIXEL_FORMAT_GRPH_RGB565:
627 		dal_pixel_format = PIXEL_FORMAT_RGB565;
628 		break;
629 	case SURFACE_PIXEL_FORMAT_GRPH_ARGB8888:
630 		dal_pixel_format = PIXEL_FORMAT_ARGB8888;
631 		break;
632 	case SURFACE_PIXEL_FORMAT_GRPH_ABGR8888:
633 		dal_pixel_format = PIXEL_FORMAT_ARGB8888;
634 		break;
635 	case SURFACE_PIXEL_FORMAT_GRPH_ARGB2101010:
636 		dal_pixel_format = PIXEL_FORMAT_ARGB2101010;
637 		break;
638 	case SURFACE_PIXEL_FORMAT_GRPH_ABGR2101010:
639 		dal_pixel_format = PIXEL_FORMAT_ARGB2101010;
640 		break;
641 	case SURFACE_PIXEL_FORMAT_GRPH_ABGR2101010_XR_BIAS:
642 		dal_pixel_format = PIXEL_FORMAT_ARGB2101010_XRBIAS;
643 		break;
644 	case SURFACE_PIXEL_FORMAT_GRPH_ABGR16161616F:
645 	case SURFACE_PIXEL_FORMAT_GRPH_ARGB16161616F:
646 		dal_pixel_format = PIXEL_FORMAT_FP16;
647 		break;
648 	case SURFACE_PIXEL_FORMAT_VIDEO_420_YCbCr:
649 	case SURFACE_PIXEL_FORMAT_VIDEO_420_YCrCb:
650 		dal_pixel_format = PIXEL_FORMAT_420BPP8;
651 		break;
652 	case SURFACE_PIXEL_FORMAT_VIDEO_420_10bpc_YCbCr:
653 	case SURFACE_PIXEL_FORMAT_VIDEO_420_10bpc_YCrCb:
654 		dal_pixel_format = PIXEL_FORMAT_420BPP10;
655 		break;
656 	case SURFACE_PIXEL_FORMAT_GRPH_ARGB16161616:
657 	case SURFACE_PIXEL_FORMAT_GRPH_ABGR16161616:
658 	default:
659 		dal_pixel_format = PIXEL_FORMAT_UNKNOWN;
660 		break;
661 	}
662 	return dal_pixel_format;
663 }
664 
665 static inline void get_vp_scan_direction(
666 	enum dc_rotation_angle rotation,
667 	bool horizontal_mirror,
668 	bool *orthogonal_rotation,
669 	bool *flip_vert_scan_dir,
670 	bool *flip_horz_scan_dir)
671 {
672 	*orthogonal_rotation = false;
673 	*flip_vert_scan_dir = false;
674 	*flip_horz_scan_dir = false;
675 	if (rotation == ROTATION_ANGLE_180) {
676 		*flip_vert_scan_dir = true;
677 		*flip_horz_scan_dir = true;
678 	} else if (rotation == ROTATION_ANGLE_90) {
679 		*orthogonal_rotation = true;
680 		*flip_horz_scan_dir = true;
681 	} else if (rotation == ROTATION_ANGLE_270) {
682 		*orthogonal_rotation = true;
683 		*flip_vert_scan_dir = true;
684 	}
685 
686 	if (horizontal_mirror)
687 		*flip_horz_scan_dir = !*flip_horz_scan_dir;
688 }
689 
690 int get_num_mpc_splits(struct pipe_ctx *pipe)
691 {
692 	int mpc_split_count = 0;
693 	struct pipe_ctx *other_pipe = pipe->bottom_pipe;
694 
695 	while (other_pipe && other_pipe->plane_state == pipe->plane_state) {
696 		mpc_split_count++;
697 		other_pipe = other_pipe->bottom_pipe;
698 	}
699 	other_pipe = pipe->top_pipe;
700 	while (other_pipe && other_pipe->plane_state == pipe->plane_state) {
701 		mpc_split_count++;
702 		other_pipe = other_pipe->top_pipe;
703 	}
704 
705 	return mpc_split_count;
706 }
707 
708 int get_num_odm_splits(struct pipe_ctx *pipe)
709 {
710 	int odm_split_count = 0;
711 	struct pipe_ctx *next_pipe = pipe->next_odm_pipe;
712 	while (next_pipe) {
713 		odm_split_count++;
714 		next_pipe = next_pipe->next_odm_pipe;
715 	}
716 	pipe = pipe->prev_odm_pipe;
717 	while (pipe) {
718 		odm_split_count++;
719 		pipe = pipe->prev_odm_pipe;
720 	}
721 	return odm_split_count;
722 }
723 
724 static void calculate_split_count_and_index(struct pipe_ctx *pipe_ctx, int *split_count, int *split_idx)
725 {
726 	*split_count = get_num_odm_splits(pipe_ctx);
727 	*split_idx = 0;
728 	if (*split_count == 0) {
729 		/*Check for mpc split*/
730 		struct pipe_ctx *split_pipe = pipe_ctx->top_pipe;
731 
732 		*split_count = get_num_mpc_splits(pipe_ctx);
733 		while (split_pipe && split_pipe->plane_state == pipe_ctx->plane_state) {
734 			(*split_idx)++;
735 			split_pipe = split_pipe->top_pipe;
736 		}
737 	} else {
738 		/*Get odm split index*/
739 		struct pipe_ctx *split_pipe = pipe_ctx->prev_odm_pipe;
740 
741 		while (split_pipe) {
742 			(*split_idx)++;
743 			split_pipe = split_pipe->prev_odm_pipe;
744 		}
745 	}
746 }
747 
748 /*
749  * This is a preliminary vp size calculation to allow us to check taps support.
750  * The result is completely overridden afterwards.
751  */
752 static void calculate_viewport_size(struct pipe_ctx *pipe_ctx)
753 {
754 	struct scaler_data *data = &pipe_ctx->plane_res.scl_data;
755 
756 	data->viewport.width = dc_fixpt_ceil(dc_fixpt_mul_int(data->ratios.horz, data->recout.width));
757 	data->viewport.height = dc_fixpt_ceil(dc_fixpt_mul_int(data->ratios.vert, data->recout.height));
758 	data->viewport_c.width = dc_fixpt_ceil(dc_fixpt_mul_int(data->ratios.horz_c, data->recout.width));
759 	data->viewport_c.height = dc_fixpt_ceil(dc_fixpt_mul_int(data->ratios.vert_c, data->recout.height));
760 	if (pipe_ctx->plane_state->rotation == ROTATION_ANGLE_90 ||
761 			pipe_ctx->plane_state->rotation == ROTATION_ANGLE_270) {
762 		swap(data->viewport.width, data->viewport.height);
763 		swap(data->viewport_c.width, data->viewport_c.height);
764 	}
765 }
766 
767 static void calculate_recout(struct pipe_ctx *pipe_ctx)
768 {
769 	const struct dc_plane_state *plane_state = pipe_ctx->plane_state;
770 	const struct dc_stream_state *stream = pipe_ctx->stream;
771 	struct scaler_data *data = &pipe_ctx->plane_res.scl_data;
772 	struct rect surf_clip = plane_state->clip_rect;
773 	bool split_tb = stream->view_format == VIEW_3D_FORMAT_TOP_AND_BOTTOM;
774 	int split_count, split_idx;
775 
776 	calculate_split_count_and_index(pipe_ctx, &split_count, &split_idx);
777 	if (stream->view_format == VIEW_3D_FORMAT_SIDE_BY_SIDE)
778 		split_idx = 0;
779 
780 	/*
781 	 * Only the leftmost ODM pipe should be offset by a nonzero distance
782 	 */
783 	if (!pipe_ctx->prev_odm_pipe || split_idx == split_count) {
784 		data->recout.x = stream->dst.x;
785 		if (stream->src.x < surf_clip.x)
786 			data->recout.x += (surf_clip.x - stream->src.x) * stream->dst.width
787 						/ stream->src.width;
788 	} else
789 		data->recout.x = 0;
790 
791 	if (stream->src.x > surf_clip.x)
792 		surf_clip.width -= stream->src.x - surf_clip.x;
793 	data->recout.width = surf_clip.width * stream->dst.width / stream->src.width;
794 	if (data->recout.width + data->recout.x > stream->dst.x + stream->dst.width)
795 		data->recout.width = stream->dst.x + stream->dst.width - data->recout.x;
796 
797 	data->recout.y = stream->dst.y;
798 	if (stream->src.y < surf_clip.y)
799 		data->recout.y += (surf_clip.y - stream->src.y) * stream->dst.height
800 						/ stream->src.height;
801 	else if (stream->src.y > surf_clip.y)
802 		surf_clip.height -= stream->src.y - surf_clip.y;
803 
804 	data->recout.height = surf_clip.height * stream->dst.height / stream->src.height;
805 	if (data->recout.height + data->recout.y > stream->dst.y + stream->dst.height)
806 		data->recout.height = stream->dst.y + stream->dst.height - data->recout.y;
807 
808 	/* Handle h & v split */
809 	if (split_tb) {
810 		ASSERT(data->recout.height % 2 == 0);
811 		data->recout.height /= 2;
812 	} else if (split_count) {
813 		if (!pipe_ctx->next_odm_pipe && !pipe_ctx->prev_odm_pipe) {
814 			/* extra pixels in the division remainder need to go to pipes after
815 			 * the extra pixel index minus one(epimo) defined here as:
816 			 */
817 			int epimo = split_count - data->recout.width % (split_count + 1);
818 
819 			data->recout.x += (data->recout.width / (split_count + 1)) * split_idx;
820 			if (split_idx > epimo)
821 				data->recout.x += split_idx - epimo - 1;
822 			ASSERT(stream->view_format != VIEW_3D_FORMAT_SIDE_BY_SIDE || data->recout.width % 2 == 0);
823 			data->recout.width = data->recout.width / (split_count + 1) + (split_idx > epimo ? 1 : 0);
824 		} else {
825 			/* odm */
826 			if (split_idx == split_count) {
827 				/* rightmost pipe is the remainder recout */
828 				data->recout.width -= data->h_active * split_count - data->recout.x;
829 
830 				/* ODM combine cases with MPO we can get negative widths */
831 				if (data->recout.width < 0)
832 					data->recout.width = 0;
833 
834 				data->recout.x = 0;
835 			} else
836 				data->recout.width = data->h_active - data->recout.x;
837 		}
838 	}
839 }
840 
841 static void calculate_scaling_ratios(struct pipe_ctx *pipe_ctx)
842 {
843 	const struct dc_plane_state *plane_state = pipe_ctx->plane_state;
844 	const struct dc_stream_state *stream = pipe_ctx->stream;
845 	struct rect surf_src = plane_state->src_rect;
846 	const int in_w = stream->src.width;
847 	const int in_h = stream->src.height;
848 	const int out_w = stream->dst.width;
849 	const int out_h = stream->dst.height;
850 
851 	/*Swap surf_src height and width since scaling ratios are in recout rotation*/
852 	if (pipe_ctx->plane_state->rotation == ROTATION_ANGLE_90 ||
853 			pipe_ctx->plane_state->rotation == ROTATION_ANGLE_270)
854 		swap(surf_src.height, surf_src.width);
855 
856 	pipe_ctx->plane_res.scl_data.ratios.horz = dc_fixpt_from_fraction(
857 					surf_src.width,
858 					plane_state->dst_rect.width);
859 	pipe_ctx->plane_res.scl_data.ratios.vert = dc_fixpt_from_fraction(
860 					surf_src.height,
861 					plane_state->dst_rect.height);
862 
863 	if (stream->view_format == VIEW_3D_FORMAT_SIDE_BY_SIDE)
864 		pipe_ctx->plane_res.scl_data.ratios.horz.value *= 2;
865 	else if (stream->view_format == VIEW_3D_FORMAT_TOP_AND_BOTTOM)
866 		pipe_ctx->plane_res.scl_data.ratios.vert.value *= 2;
867 
868 	pipe_ctx->plane_res.scl_data.ratios.vert.value = div64_s64(
869 		pipe_ctx->plane_res.scl_data.ratios.vert.value * in_h, out_h);
870 	pipe_ctx->plane_res.scl_data.ratios.horz.value = div64_s64(
871 		pipe_ctx->plane_res.scl_data.ratios.horz.value * in_w, out_w);
872 
873 	pipe_ctx->plane_res.scl_data.ratios.horz_c = pipe_ctx->plane_res.scl_data.ratios.horz;
874 	pipe_ctx->plane_res.scl_data.ratios.vert_c = pipe_ctx->plane_res.scl_data.ratios.vert;
875 
876 	if (pipe_ctx->plane_res.scl_data.format == PIXEL_FORMAT_420BPP8
877 			|| pipe_ctx->plane_res.scl_data.format == PIXEL_FORMAT_420BPP10) {
878 		pipe_ctx->plane_res.scl_data.ratios.horz_c.value /= 2;
879 		pipe_ctx->plane_res.scl_data.ratios.vert_c.value /= 2;
880 	}
881 	pipe_ctx->plane_res.scl_data.ratios.horz = dc_fixpt_truncate(
882 			pipe_ctx->plane_res.scl_data.ratios.horz, 19);
883 	pipe_ctx->plane_res.scl_data.ratios.vert = dc_fixpt_truncate(
884 			pipe_ctx->plane_res.scl_data.ratios.vert, 19);
885 	pipe_ctx->plane_res.scl_data.ratios.horz_c = dc_fixpt_truncate(
886 			pipe_ctx->plane_res.scl_data.ratios.horz_c, 19);
887 	pipe_ctx->plane_res.scl_data.ratios.vert_c = dc_fixpt_truncate(
888 			pipe_ctx->plane_res.scl_data.ratios.vert_c, 19);
889 }
890 
891 
892 /*
893  * We completely calculate vp offset, size and inits here based entirely on scaling
894  * ratios and recout for pixel perfect pipe combine.
895  */
896 static void calculate_init_and_vp(
897 		bool flip_scan_dir,
898 		int recout_offset_within_recout_full,
899 		int recout_size,
900 		int src_size,
901 		int taps,
902 		struct fixed31_32 ratio,
903 		struct fixed31_32 *init,
904 		int *vp_offset,
905 		int *vp_size)
906 {
907 	struct fixed31_32 temp;
908 	int int_part;
909 
910 	/*
911 	 * First of the taps starts sampling pixel number <init_int_part> corresponding to recout
912 	 * pixel 1. Next recout pixel samples int part of <init + scaling ratio> and so on.
913 	 * All following calculations are based on this logic.
914 	 *
915 	 * Init calculated according to formula:
916 	 * 	init = (scaling_ratio + number_of_taps + 1) / 2
917 	 * 	init_bot = init + scaling_ratio
918 	 * 	to get pixel perfect combine add the fraction from calculating vp offset
919 	 */
920 	temp = dc_fixpt_mul_int(ratio, recout_offset_within_recout_full);
921 	*vp_offset = dc_fixpt_floor(temp);
922 	temp.value &= 0xffffffff;
923 	*init = dc_fixpt_truncate(dc_fixpt_add(dc_fixpt_div_int(
924 			dc_fixpt_add_int(ratio, taps + 1), 2), temp), 19);
925 	/*
926 	 * If viewport has non 0 offset and there are more taps than covered by init then
927 	 * we should decrease the offset and increase init so we are never sampling
928 	 * outside of viewport.
929 	 */
930 	int_part = dc_fixpt_floor(*init);
931 	if (int_part < taps) {
932 		int_part = taps - int_part;
933 		if (int_part > *vp_offset)
934 			int_part = *vp_offset;
935 		*vp_offset -= int_part;
936 		*init = dc_fixpt_add_int(*init, int_part);
937 	}
938 	/*
939 	 * If taps are sampling outside of viewport at end of recout and there are more pixels
940 	 * available in the surface we should increase the viewport size, regardless set vp to
941 	 * only what is used.
942 	 */
943 	temp = dc_fixpt_add(*init, dc_fixpt_mul_int(ratio, recout_size - 1));
944 	*vp_size = dc_fixpt_floor(temp);
945 	if (*vp_size + *vp_offset > src_size)
946 		*vp_size = src_size - *vp_offset;
947 
948 	/* We did all the math assuming we are scanning same direction as display does,
949 	 * however mirror/rotation changes how vp scans vs how it is offset. If scan direction
950 	 * is flipped we simply need to calculate offset from the other side of plane.
951 	 * Note that outside of viewport all scaling hardware works in recout space.
952 	 */
953 	if (flip_scan_dir)
954 		*vp_offset = src_size - *vp_offset - *vp_size;
955 }
956 
957 static void calculate_inits_and_viewports(struct pipe_ctx *pipe_ctx)
958 {
959 	const struct dc_plane_state *plane_state = pipe_ctx->plane_state;
960 	const struct dc_stream_state *stream = pipe_ctx->stream;
961 	struct scaler_data *data = &pipe_ctx->plane_res.scl_data;
962 	struct rect src = plane_state->src_rect;
963 	int vpc_div = (data->format == PIXEL_FORMAT_420BPP8
964 				|| data->format == PIXEL_FORMAT_420BPP10) ? 2 : 1;
965 	int split_count, split_idx, ro_lb, ro_tb, recout_full_x, recout_full_y;
966 	bool orthogonal_rotation, flip_vert_scan_dir, flip_horz_scan_dir;
967 
968 	calculate_split_count_and_index(pipe_ctx, &split_count, &split_idx);
969 	/*
970 	 * recout full is what the recout would have been if we didnt clip
971 	 * the source plane at all. We only care about left(ro_lb) and top(ro_tb)
972 	 * offsets of recout within recout full because those are the directions
973 	 * we scan from and therefore the only ones that affect inits.
974 	 */
975 	recout_full_x = stream->dst.x + (plane_state->dst_rect.x - stream->src.x)
976 			* stream->dst.width / stream->src.width;
977 	recout_full_y = stream->dst.y + (plane_state->dst_rect.y - stream->src.y)
978 			* stream->dst.height / stream->src.height;
979 	if (pipe_ctx->prev_odm_pipe && split_idx)
980 		ro_lb = data->h_active * split_idx - recout_full_x;
981 	else
982 		ro_lb = data->recout.x - recout_full_x;
983 	ro_tb = data->recout.y - recout_full_y;
984 	ASSERT(ro_lb >= 0 && ro_tb >= 0);
985 
986 	/*
987 	 * Work in recout rotation since that requires less transformations
988 	 */
989 	get_vp_scan_direction(
990 			plane_state->rotation,
991 			plane_state->horizontal_mirror,
992 			&orthogonal_rotation,
993 			&flip_vert_scan_dir,
994 			&flip_horz_scan_dir);
995 
996 	if (orthogonal_rotation) {
997 		swap(src.width, src.height);
998 		swap(flip_vert_scan_dir, flip_horz_scan_dir);
999 	}
1000 
1001 	calculate_init_and_vp(
1002 			flip_horz_scan_dir,
1003 			ro_lb,
1004 			data->recout.width,
1005 			src.width,
1006 			data->taps.h_taps,
1007 			data->ratios.horz,
1008 			&data->inits.h,
1009 			&data->viewport.x,
1010 			&data->viewport.width);
1011 	calculate_init_and_vp(
1012 			flip_horz_scan_dir,
1013 			ro_lb,
1014 			data->recout.width,
1015 			src.width / vpc_div,
1016 			data->taps.h_taps_c,
1017 			data->ratios.horz_c,
1018 			&data->inits.h_c,
1019 			&data->viewport_c.x,
1020 			&data->viewport_c.width);
1021 	calculate_init_and_vp(
1022 			flip_vert_scan_dir,
1023 			ro_tb,
1024 			data->recout.height,
1025 			src.height,
1026 			data->taps.v_taps,
1027 			data->ratios.vert,
1028 			&data->inits.v,
1029 			&data->viewport.y,
1030 			&data->viewport.height);
1031 	calculate_init_and_vp(
1032 			flip_vert_scan_dir,
1033 			ro_tb,
1034 			data->recout.height,
1035 			src.height / vpc_div,
1036 			data->taps.v_taps_c,
1037 			data->ratios.vert_c,
1038 			&data->inits.v_c,
1039 			&data->viewport_c.y,
1040 			&data->viewport_c.height);
1041 	if (orthogonal_rotation) {
1042 		swap(data->viewport.x, data->viewport.y);
1043 		swap(data->viewport.width, data->viewport.height);
1044 		swap(data->viewport_c.x, data->viewport_c.y);
1045 		swap(data->viewport_c.width, data->viewport_c.height);
1046 	}
1047 	data->viewport.x += src.x;
1048 	data->viewport.y += src.y;
1049 	ASSERT(src.x % vpc_div == 0 && src.y % vpc_div == 0);
1050 	data->viewport_c.x += src.x / vpc_div;
1051 	data->viewport_c.y += src.y / vpc_div;
1052 }
1053 
1054 bool resource_build_scaling_params(struct pipe_ctx *pipe_ctx)
1055 {
1056 	const struct dc_plane_state *plane_state = pipe_ctx->plane_state;
1057 	struct dc_crtc_timing *timing = &pipe_ctx->stream->timing;
1058 	bool res = false;
1059 	DC_LOGGER_INIT(pipe_ctx->stream->ctx->logger);
1060 
1061 	pipe_ctx->plane_res.scl_data.format = convert_pixel_format_to_dalsurface(
1062 			pipe_ctx->plane_state->format);
1063 
1064 	/* Timing borders are part of vactive that we are also supposed to skip in addition
1065 	 * to any stream dst offset. Since dm logic assumes dst is in addressable
1066 	 * space we need to add the left and top borders to dst offsets temporarily.
1067 	 * TODO: fix in DM, stream dst is supposed to be in vactive
1068 	 */
1069 	pipe_ctx->stream->dst.x += timing->h_border_left;
1070 	pipe_ctx->stream->dst.y += timing->v_border_top;
1071 
1072 	/* Calculate H and V active size */
1073 	pipe_ctx->plane_res.scl_data.h_active = timing->h_addressable +
1074 			timing->h_border_left + timing->h_border_right;
1075 	pipe_ctx->plane_res.scl_data.v_active = timing->v_addressable +
1076 		timing->v_border_top + timing->v_border_bottom;
1077 	if (pipe_ctx->next_odm_pipe || pipe_ctx->prev_odm_pipe)
1078 		pipe_ctx->plane_res.scl_data.h_active /= get_num_odm_splits(pipe_ctx) + 1;
1079 
1080 	/* depends on h_active */
1081 	calculate_recout(pipe_ctx);
1082 	/* depends on pixel format */
1083 	calculate_scaling_ratios(pipe_ctx);
1084 	/* depends on scaling ratios and recout, does not calculate offset yet */
1085 	calculate_viewport_size(pipe_ctx);
1086 
1087 	/* Stopgap for validation of ODM + MPO on one side of screen case */
1088 	if (pipe_ctx->plane_res.scl_data.viewport.height < 1 ||
1089 			pipe_ctx->plane_res.scl_data.viewport.width < 1)
1090 		return false;
1091 
1092 	/*
1093 	 * LB calculations depend on vp size, h/v_active and scaling ratios
1094 	 * Setting line buffer pixel depth to 24bpp yields banding
1095 	 * on certain displays, such as the Sharp 4k. 36bpp is needed
1096 	 * to support SURFACE_PIXEL_FORMAT_GRPH_ARGB16161616 and
1097 	 * SURFACE_PIXEL_FORMAT_GRPH_ABGR16161616 with actual > 10 bpc
1098 	 * precision on at least DCN display engines. However, at least
1099 	 * Carrizo with DCE_VERSION_11_0 does not like 36 bpp lb depth,
1100 	 * so use only 30 bpp on DCE_VERSION_11_0. Testing with DCE 11.2 and 8.3
1101 	 * did not show such problems, so this seems to be the exception.
1102 	 */
1103 	if (plane_state->ctx->dce_version > DCE_VERSION_11_0)
1104 		pipe_ctx->plane_res.scl_data.lb_params.depth = LB_PIXEL_DEPTH_36BPP;
1105 	else
1106 		pipe_ctx->plane_res.scl_data.lb_params.depth = LB_PIXEL_DEPTH_30BPP;
1107 
1108 	pipe_ctx->plane_res.scl_data.lb_params.alpha_en = plane_state->per_pixel_alpha;
1109 
1110 	if (pipe_ctx->plane_res.xfm != NULL)
1111 		res = pipe_ctx->plane_res.xfm->funcs->transform_get_optimal_number_of_taps(
1112 				pipe_ctx->plane_res.xfm, &pipe_ctx->plane_res.scl_data, &plane_state->scaling_quality);
1113 
1114 	if (pipe_ctx->plane_res.dpp != NULL)
1115 		res = pipe_ctx->plane_res.dpp->funcs->dpp_get_optimal_number_of_taps(
1116 				pipe_ctx->plane_res.dpp, &pipe_ctx->plane_res.scl_data, &plane_state->scaling_quality);
1117 
1118 
1119 	if (!res) {
1120 		/* Try 24 bpp linebuffer */
1121 		pipe_ctx->plane_res.scl_data.lb_params.depth = LB_PIXEL_DEPTH_24BPP;
1122 
1123 		if (pipe_ctx->plane_res.xfm != NULL)
1124 			res = pipe_ctx->plane_res.xfm->funcs->transform_get_optimal_number_of_taps(
1125 					pipe_ctx->plane_res.xfm,
1126 					&pipe_ctx->plane_res.scl_data,
1127 					&plane_state->scaling_quality);
1128 
1129 		if (pipe_ctx->plane_res.dpp != NULL)
1130 			res = pipe_ctx->plane_res.dpp->funcs->dpp_get_optimal_number_of_taps(
1131 					pipe_ctx->plane_res.dpp,
1132 					&pipe_ctx->plane_res.scl_data,
1133 					&plane_state->scaling_quality);
1134 	}
1135 
1136 	/*
1137 	 * Depends on recout, scaling ratios, h_active and taps
1138 	 * May need to re-check lb size after this in some obscure scenario
1139 	 */
1140 	if (res)
1141 		calculate_inits_and_viewports(pipe_ctx);
1142 
1143 	/*
1144 	 * Handle side by side and top bottom 3d recout offsets after vp calculation
1145 	 * since 3d is special and needs to calculate vp as if there is no recout offset
1146 	 * This may break with rotation, good thing we aren't mixing hw rotation and 3d
1147 	 */
1148 	if (pipe_ctx->top_pipe && pipe_ctx->top_pipe->plane_state == plane_state) {
1149 		ASSERT(plane_state->rotation == ROTATION_ANGLE_0 ||
1150 			(pipe_ctx->stream->view_format != VIEW_3D_FORMAT_TOP_AND_BOTTOM &&
1151 				pipe_ctx->stream->view_format != VIEW_3D_FORMAT_SIDE_BY_SIDE));
1152 		if (pipe_ctx->stream->view_format == VIEW_3D_FORMAT_TOP_AND_BOTTOM)
1153 			pipe_ctx->plane_res.scl_data.recout.y += pipe_ctx->plane_res.scl_data.recout.height;
1154 		else if (pipe_ctx->stream->view_format == VIEW_3D_FORMAT_SIDE_BY_SIDE)
1155 			pipe_ctx->plane_res.scl_data.recout.x += pipe_ctx->plane_res.scl_data.recout.width;
1156 	}
1157 
1158 	if (!pipe_ctx->stream->ctx->dc->config.enable_windowed_mpo_odm) {
1159 		if (pipe_ctx->plane_res.scl_data.viewport.height < MIN_VIEWPORT_SIZE ||
1160 				pipe_ctx->plane_res.scl_data.viewport.width < MIN_VIEWPORT_SIZE)
1161 			res = false;
1162 	} else {
1163 		/* Clamp minimum viewport size */
1164 		if (pipe_ctx->plane_res.scl_data.viewport.height < MIN_VIEWPORT_SIZE)
1165 			pipe_ctx->plane_res.scl_data.viewport.height = MIN_VIEWPORT_SIZE;
1166 		if (pipe_ctx->plane_res.scl_data.viewport.width < MIN_VIEWPORT_SIZE)
1167 			pipe_ctx->plane_res.scl_data.viewport.width = MIN_VIEWPORT_SIZE;
1168 	}
1169 
1170 	DC_LOG_SCALER("%s pipe %d:\nViewport: height:%d width:%d x:%d y:%d  Recout: height:%d width:%d x:%d y:%d  HACTIVE:%d VACTIVE:%d\n"
1171 			"src_rect: height:%d width:%d x:%d y:%d  dst_rect: height:%d width:%d x:%d y:%d  clip_rect: height:%d width:%d x:%d y:%d\n",
1172 			__func__,
1173 			pipe_ctx->pipe_idx,
1174 			pipe_ctx->plane_res.scl_data.viewport.height,
1175 			pipe_ctx->plane_res.scl_data.viewport.width,
1176 			pipe_ctx->plane_res.scl_data.viewport.x,
1177 			pipe_ctx->plane_res.scl_data.viewport.y,
1178 			pipe_ctx->plane_res.scl_data.recout.height,
1179 			pipe_ctx->plane_res.scl_data.recout.width,
1180 			pipe_ctx->plane_res.scl_data.recout.x,
1181 			pipe_ctx->plane_res.scl_data.recout.y,
1182 			pipe_ctx->plane_res.scl_data.h_active,
1183 			pipe_ctx->plane_res.scl_data.v_active,
1184 			plane_state->src_rect.height,
1185 			plane_state->src_rect.width,
1186 			plane_state->src_rect.x,
1187 			plane_state->src_rect.y,
1188 			plane_state->dst_rect.height,
1189 			plane_state->dst_rect.width,
1190 			plane_state->dst_rect.x,
1191 			plane_state->dst_rect.y,
1192 			plane_state->clip_rect.height,
1193 			plane_state->clip_rect.width,
1194 			plane_state->clip_rect.x,
1195 			plane_state->clip_rect.y);
1196 
1197 	pipe_ctx->stream->dst.x -= timing->h_border_left;
1198 	pipe_ctx->stream->dst.y -= timing->v_border_top;
1199 
1200 	return res;
1201 }
1202 
1203 
1204 enum dc_status resource_build_scaling_params_for_context(
1205 	const struct dc  *dc,
1206 	struct dc_state *context)
1207 {
1208 	int i;
1209 
1210 	for (i = 0; i < MAX_PIPES; i++) {
1211 		if (context->res_ctx.pipe_ctx[i].plane_state != NULL &&
1212 				context->res_ctx.pipe_ctx[i].stream != NULL)
1213 			if (!resource_build_scaling_params(&context->res_ctx.pipe_ctx[i]))
1214 				return DC_FAIL_SCALING;
1215 	}
1216 
1217 	return DC_OK;
1218 }
1219 
1220 struct pipe_ctx *find_idle_secondary_pipe(
1221 		struct resource_context *res_ctx,
1222 		const struct resource_pool *pool,
1223 		const struct pipe_ctx *primary_pipe)
1224 {
1225 	int i;
1226 	struct pipe_ctx *secondary_pipe = NULL;
1227 
1228 	/*
1229 	 * We add a preferred pipe mapping to avoid the chance that
1230 	 * MPCCs already in use will need to be reassigned to other trees.
1231 	 * For example, if we went with the strict, assign backwards logic:
1232 	 *
1233 	 * (State 1)
1234 	 * Display A on, no surface, top pipe = 0
1235 	 * Display B on, no surface, top pipe = 1
1236 	 *
1237 	 * (State 2)
1238 	 * Display A on, no surface, top pipe = 0
1239 	 * Display B on, surface enable, top pipe = 1, bottom pipe = 5
1240 	 *
1241 	 * (State 3)
1242 	 * Display A on, surface enable, top pipe = 0, bottom pipe = 5
1243 	 * Display B on, surface enable, top pipe = 1, bottom pipe = 4
1244 	 *
1245 	 * The state 2->3 transition requires remapping MPCC 5 from display B
1246 	 * to display A.
1247 	 *
1248 	 * However, with the preferred pipe logic, state 2 would look like:
1249 	 *
1250 	 * (State 2)
1251 	 * Display A on, no surface, top pipe = 0
1252 	 * Display B on, surface enable, top pipe = 1, bottom pipe = 4
1253 	 *
1254 	 * This would then cause 2->3 to not require remapping any MPCCs.
1255 	 */
1256 	if (primary_pipe) {
1257 		int preferred_pipe_idx = (pool->pipe_count - 1) - primary_pipe->pipe_idx;
1258 		if (res_ctx->pipe_ctx[preferred_pipe_idx].stream == NULL) {
1259 			secondary_pipe = &res_ctx->pipe_ctx[preferred_pipe_idx];
1260 			secondary_pipe->pipe_idx = preferred_pipe_idx;
1261 		}
1262 	}
1263 
1264 	/*
1265 	 * search backwards for the second pipe to keep pipe
1266 	 * assignment more consistent
1267 	 */
1268 	if (!secondary_pipe)
1269 		for (i = pool->pipe_count - 1; i >= 0; i--) {
1270 			if (res_ctx->pipe_ctx[i].stream == NULL) {
1271 				secondary_pipe = &res_ctx->pipe_ctx[i];
1272 				secondary_pipe->pipe_idx = i;
1273 				break;
1274 			}
1275 		}
1276 
1277 	return secondary_pipe;
1278 }
1279 
1280 struct pipe_ctx *resource_get_head_pipe_for_stream(
1281 		struct resource_context *res_ctx,
1282 		struct dc_stream_state *stream)
1283 {
1284 	int i;
1285 
1286 	for (i = 0; i < MAX_PIPES; i++) {
1287 		if (res_ctx->pipe_ctx[i].stream == stream
1288 				&& !res_ctx->pipe_ctx[i].top_pipe
1289 				&& !res_ctx->pipe_ctx[i].prev_odm_pipe)
1290 			return &res_ctx->pipe_ctx[i];
1291 	}
1292 	return NULL;
1293 }
1294 
1295 static struct pipe_ctx *resource_get_tail_pipe(
1296 		struct resource_context *res_ctx,
1297 		struct pipe_ctx *head_pipe)
1298 {
1299 	struct pipe_ctx *tail_pipe;
1300 
1301 	tail_pipe = head_pipe->bottom_pipe;
1302 
1303 	while (tail_pipe) {
1304 		head_pipe = tail_pipe;
1305 		tail_pipe = tail_pipe->bottom_pipe;
1306 	}
1307 
1308 	return head_pipe;
1309 }
1310 
1311 /*
1312  * A free_pipe for a stream is defined here as a pipe
1313  * that has no surface attached yet
1314  */
1315 static struct pipe_ctx *acquire_free_pipe_for_head(
1316 		struct dc_state *context,
1317 		const struct resource_pool *pool,
1318 		struct pipe_ctx *head_pipe)
1319 {
1320 	int i;
1321 	struct resource_context *res_ctx = &context->res_ctx;
1322 
1323 	if (!head_pipe->plane_state)
1324 		return head_pipe;
1325 
1326 	/* Re-use pipe already acquired for this stream if available*/
1327 	for (i = pool->pipe_count - 1; i >= 0; i--) {
1328 		if (res_ctx->pipe_ctx[i].stream == head_pipe->stream &&
1329 				!res_ctx->pipe_ctx[i].plane_state) {
1330 			return &res_ctx->pipe_ctx[i];
1331 		}
1332 	}
1333 
1334 	/*
1335 	 * At this point we have no re-useable pipe for this stream and we need
1336 	 * to acquire an idle one to satisfy the request
1337 	 */
1338 
1339 	if (!pool->funcs->acquire_idle_pipe_for_layer)
1340 		return NULL;
1341 
1342 	return pool->funcs->acquire_idle_pipe_for_layer(context, pool, head_pipe->stream);
1343 }
1344 
1345 #if defined(CONFIG_DRM_AMD_DC_DCN)
1346 static int acquire_first_split_pipe(
1347 		struct resource_context *res_ctx,
1348 		const struct resource_pool *pool,
1349 		struct dc_stream_state *stream)
1350 {
1351 	int i;
1352 
1353 	for (i = 0; i < pool->pipe_count; i++) {
1354 		struct pipe_ctx *split_pipe = &res_ctx->pipe_ctx[i];
1355 
1356 		if (split_pipe->top_pipe &&
1357 				split_pipe->top_pipe->plane_state == split_pipe->plane_state) {
1358 			split_pipe->top_pipe->bottom_pipe = split_pipe->bottom_pipe;
1359 			if (split_pipe->bottom_pipe)
1360 				split_pipe->bottom_pipe->top_pipe = split_pipe->top_pipe;
1361 
1362 			if (split_pipe->top_pipe->plane_state)
1363 				resource_build_scaling_params(split_pipe->top_pipe);
1364 
1365 			memset(split_pipe, 0, sizeof(*split_pipe));
1366 			split_pipe->stream_res.tg = pool->timing_generators[i];
1367 			split_pipe->plane_res.hubp = pool->hubps[i];
1368 			split_pipe->plane_res.ipp = pool->ipps[i];
1369 			split_pipe->plane_res.dpp = pool->dpps[i];
1370 			split_pipe->stream_res.opp = pool->opps[i];
1371 			split_pipe->plane_res.mpcc_inst = pool->dpps[i]->inst;
1372 			split_pipe->pipe_idx = i;
1373 
1374 			split_pipe->stream = stream;
1375 			return i;
1376 		}
1377 	}
1378 	return -1;
1379 }
1380 #endif
1381 
1382 bool dc_add_plane_to_context(
1383 		const struct dc *dc,
1384 		struct dc_stream_state *stream,
1385 		struct dc_plane_state *plane_state,
1386 		struct dc_state *context)
1387 {
1388 	int i;
1389 	struct resource_pool *pool = dc->res_pool;
1390 	struct pipe_ctx *head_pipe, *tail_pipe, *free_pipe;
1391 	struct dc_stream_status *stream_status = NULL;
1392 
1393 	for (i = 0; i < context->stream_count; i++)
1394 		if (context->streams[i] == stream) {
1395 			stream_status = &context->stream_status[i];
1396 			break;
1397 		}
1398 	if (stream_status == NULL) {
1399 		dm_error("Existing stream not found; failed to attach surface!\n");
1400 		return false;
1401 	}
1402 
1403 
1404 	if (stream_status->plane_count == MAX_SURFACE_NUM) {
1405 		dm_error("Surface: can not attach plane_state %p! Maximum is: %d\n",
1406 				plane_state, MAX_SURFACE_NUM);
1407 		return false;
1408 	}
1409 
1410 	head_pipe = resource_get_head_pipe_for_stream(&context->res_ctx, stream);
1411 
1412 	if (!head_pipe) {
1413 		dm_error("Head pipe not found for stream_state %p !\n", stream);
1414 		return false;
1415 	}
1416 
1417 	/* retain new surface, but only once per stream */
1418 	dc_plane_state_retain(plane_state);
1419 
1420 	while (head_pipe) {
1421 		free_pipe = acquire_free_pipe_for_head(context, pool, head_pipe);
1422 
1423 	#if defined(CONFIG_DRM_AMD_DC_DCN)
1424 		if (!free_pipe) {
1425 			int pipe_idx = acquire_first_split_pipe(&context->res_ctx, pool, stream);
1426 			if (pipe_idx >= 0)
1427 				free_pipe = &context->res_ctx.pipe_ctx[pipe_idx];
1428 		}
1429 	#endif
1430 		if (!free_pipe) {
1431 			dc_plane_state_release(plane_state);
1432 			return false;
1433 		}
1434 
1435 		free_pipe->plane_state = plane_state;
1436 
1437 		if (head_pipe != free_pipe) {
1438 			tail_pipe = resource_get_tail_pipe(&context->res_ctx, head_pipe);
1439 			ASSERT(tail_pipe);
1440 			free_pipe->stream_res.tg = tail_pipe->stream_res.tg;
1441 			free_pipe->stream_res.abm = tail_pipe->stream_res.abm;
1442 			free_pipe->stream_res.opp = tail_pipe->stream_res.opp;
1443 			free_pipe->stream_res.stream_enc = tail_pipe->stream_res.stream_enc;
1444 			free_pipe->stream_res.audio = tail_pipe->stream_res.audio;
1445 			free_pipe->clock_source = tail_pipe->clock_source;
1446 			free_pipe->top_pipe = tail_pipe;
1447 			tail_pipe->bottom_pipe = free_pipe;
1448 			if (!free_pipe->next_odm_pipe && tail_pipe->next_odm_pipe && tail_pipe->next_odm_pipe->bottom_pipe) {
1449 				free_pipe->next_odm_pipe = tail_pipe->next_odm_pipe->bottom_pipe;
1450 				tail_pipe->next_odm_pipe->bottom_pipe->prev_odm_pipe = free_pipe;
1451 			}
1452 			if (!free_pipe->prev_odm_pipe && tail_pipe->prev_odm_pipe && tail_pipe->prev_odm_pipe->bottom_pipe) {
1453 				free_pipe->prev_odm_pipe = tail_pipe->prev_odm_pipe->bottom_pipe;
1454 				tail_pipe->prev_odm_pipe->bottom_pipe->next_odm_pipe = free_pipe;
1455 			}
1456 		}
1457 		head_pipe = head_pipe->next_odm_pipe;
1458 	}
1459 	/* assign new surfaces*/
1460 	stream_status->plane_states[stream_status->plane_count] = plane_state;
1461 
1462 	stream_status->plane_count++;
1463 
1464 	return true;
1465 }
1466 
1467 bool dc_remove_plane_from_context(
1468 		const struct dc *dc,
1469 		struct dc_stream_state *stream,
1470 		struct dc_plane_state *plane_state,
1471 		struct dc_state *context)
1472 {
1473 	int i;
1474 	struct dc_stream_status *stream_status = NULL;
1475 	struct resource_pool *pool = dc->res_pool;
1476 
1477 	for (i = 0; i < context->stream_count; i++)
1478 		if (context->streams[i] == stream) {
1479 			stream_status = &context->stream_status[i];
1480 			break;
1481 		}
1482 
1483 	if (stream_status == NULL) {
1484 		dm_error("Existing stream not found; failed to remove plane.\n");
1485 		return false;
1486 	}
1487 
1488 	/* release pipe for plane*/
1489 	for (i = pool->pipe_count - 1; i >= 0; i--) {
1490 		struct pipe_ctx *pipe_ctx = &context->res_ctx.pipe_ctx[i];
1491 
1492 		if (pipe_ctx->plane_state == plane_state) {
1493 			if (pipe_ctx->top_pipe)
1494 				pipe_ctx->top_pipe->bottom_pipe = pipe_ctx->bottom_pipe;
1495 
1496 			/* Second condition is to avoid setting NULL to top pipe
1497 			 * of tail pipe making it look like head pipe in subsequent
1498 			 * deletes
1499 			 */
1500 			if (pipe_ctx->bottom_pipe && pipe_ctx->top_pipe)
1501 				pipe_ctx->bottom_pipe->top_pipe = pipe_ctx->top_pipe;
1502 
1503 			/*
1504 			 * For head pipe detach surfaces from pipe for tail
1505 			 * pipe just zero it out
1506 			 */
1507 			if (!pipe_ctx->top_pipe)
1508 				pipe_ctx->plane_state = NULL;
1509 			else
1510 				memset(pipe_ctx, 0, sizeof(*pipe_ctx));
1511 		}
1512 	}
1513 
1514 
1515 	for (i = 0; i < stream_status->plane_count; i++) {
1516 		if (stream_status->plane_states[i] == plane_state) {
1517 
1518 			dc_plane_state_release(stream_status->plane_states[i]);
1519 			break;
1520 		}
1521 	}
1522 
1523 	if (i == stream_status->plane_count) {
1524 		dm_error("Existing plane_state not found; failed to detach it!\n");
1525 		return false;
1526 	}
1527 
1528 	stream_status->plane_count--;
1529 
1530 	/* Start at the plane we've just released, and move all the planes one index forward to "trim" the array */
1531 	for (; i < stream_status->plane_count; i++)
1532 		stream_status->plane_states[i] = stream_status->plane_states[i + 1];
1533 
1534 	stream_status->plane_states[stream_status->plane_count] = NULL;
1535 
1536 	return true;
1537 }
1538 
1539 bool dc_rem_all_planes_for_stream(
1540 		const struct dc *dc,
1541 		struct dc_stream_state *stream,
1542 		struct dc_state *context)
1543 {
1544 	int i, old_plane_count;
1545 	struct dc_stream_status *stream_status = NULL;
1546 	struct dc_plane_state *del_planes[MAX_SURFACE_NUM] = { 0 };
1547 
1548 	for (i = 0; i < context->stream_count; i++)
1549 			if (context->streams[i] == stream) {
1550 				stream_status = &context->stream_status[i];
1551 				break;
1552 			}
1553 
1554 	if (stream_status == NULL) {
1555 		dm_error("Existing stream %p not found!\n", stream);
1556 		return false;
1557 	}
1558 
1559 	old_plane_count = stream_status->plane_count;
1560 
1561 	for (i = 0; i < old_plane_count; i++)
1562 		del_planes[i] = stream_status->plane_states[i];
1563 
1564 	for (i = 0; i < old_plane_count; i++)
1565 		if (!dc_remove_plane_from_context(dc, stream, del_planes[i], context))
1566 			return false;
1567 
1568 	return true;
1569 }
1570 
1571 static bool add_all_planes_for_stream(
1572 		const struct dc *dc,
1573 		struct dc_stream_state *stream,
1574 		const struct dc_validation_set set[],
1575 		int set_count,
1576 		struct dc_state *context)
1577 {
1578 	int i, j;
1579 
1580 	for (i = 0; i < set_count; i++)
1581 		if (set[i].stream == stream)
1582 			break;
1583 
1584 	if (i == set_count) {
1585 		dm_error("Stream %p not found in set!\n", stream);
1586 		return false;
1587 	}
1588 
1589 	for (j = 0; j < set[i].plane_count; j++)
1590 		if (!dc_add_plane_to_context(dc, stream, set[i].plane_states[j], context))
1591 			return false;
1592 
1593 	return true;
1594 }
1595 
1596 bool dc_add_all_planes_for_stream(
1597 		const struct dc *dc,
1598 		struct dc_stream_state *stream,
1599 		struct dc_plane_state * const *plane_states,
1600 		int plane_count,
1601 		struct dc_state *context)
1602 {
1603 	struct dc_validation_set set;
1604 	int i;
1605 
1606 	set.stream = stream;
1607 	set.plane_count = plane_count;
1608 
1609 	for (i = 0; i < plane_count; i++)
1610 		set.plane_states[i] = plane_states[i];
1611 
1612 	return add_all_planes_for_stream(dc, stream, &set, 1, context);
1613 }
1614 
1615 static bool is_timing_changed(struct dc_stream_state *cur_stream,
1616 		struct dc_stream_state *new_stream)
1617 {
1618 	if (cur_stream == NULL)
1619 		return true;
1620 
1621 	/* If output color space is changed, need to reprogram info frames */
1622 	if (cur_stream->output_color_space != new_stream->output_color_space)
1623 		return true;
1624 
1625 	return memcmp(
1626 		&cur_stream->timing,
1627 		&new_stream->timing,
1628 		sizeof(struct dc_crtc_timing)) != 0;
1629 }
1630 
1631 static bool are_stream_backends_same(
1632 	struct dc_stream_state *stream_a, struct dc_stream_state *stream_b)
1633 {
1634 	if (stream_a == stream_b)
1635 		return true;
1636 
1637 	if (stream_a == NULL || stream_b == NULL)
1638 		return false;
1639 
1640 	if (is_timing_changed(stream_a, stream_b))
1641 		return false;
1642 
1643 	if (stream_a->dpms_off != stream_b->dpms_off)
1644 		return false;
1645 
1646 	return true;
1647 }
1648 
1649 /*
1650  * dc_is_stream_unchanged() - Compare two stream states for equivalence.
1651  *
1652  * Checks if there a difference between the two states
1653  * that would require a mode change.
1654  *
1655  * Does not compare cursor position or attributes.
1656  */
1657 bool dc_is_stream_unchanged(
1658 	struct dc_stream_state *old_stream, struct dc_stream_state *stream)
1659 {
1660 
1661 	if (!are_stream_backends_same(old_stream, stream))
1662 		return false;
1663 
1664 	if (old_stream->ignore_msa_timing_param != stream->ignore_msa_timing_param)
1665 		return false;
1666 
1667 	return true;
1668 }
1669 
1670 /*
1671  * dc_is_stream_scaling_unchanged() - Compare scaling rectangles of two streams.
1672  */
1673 bool dc_is_stream_scaling_unchanged(
1674 	struct dc_stream_state *old_stream, struct dc_stream_state *stream)
1675 {
1676 	if (old_stream == stream)
1677 		return true;
1678 
1679 	if (old_stream == NULL || stream == NULL)
1680 		return false;
1681 
1682 	if (memcmp(&old_stream->src,
1683 			&stream->src,
1684 			sizeof(struct rect)) != 0)
1685 		return false;
1686 
1687 	if (memcmp(&old_stream->dst,
1688 			&stream->dst,
1689 			sizeof(struct rect)) != 0)
1690 		return false;
1691 
1692 	return true;
1693 }
1694 
1695 static void update_stream_engine_usage(
1696 		struct resource_context *res_ctx,
1697 		const struct resource_pool *pool,
1698 		struct stream_encoder *stream_enc,
1699 		bool acquired)
1700 {
1701 	int i;
1702 
1703 	for (i = 0; i < pool->stream_enc_count; i++) {
1704 		if (pool->stream_enc[i] == stream_enc)
1705 			res_ctx->is_stream_enc_acquired[i] = acquired;
1706 	}
1707 }
1708 
1709 #if defined(CONFIG_DRM_AMD_DC_DCN)
1710 static void update_hpo_dp_stream_engine_usage(
1711 		struct resource_context *res_ctx,
1712 		const struct resource_pool *pool,
1713 		struct hpo_dp_stream_encoder *hpo_dp_stream_enc,
1714 		bool acquired)
1715 {
1716 	int i;
1717 
1718 	for (i = 0; i < pool->hpo_dp_stream_enc_count; i++) {
1719 		if (pool->hpo_dp_stream_enc[i] == hpo_dp_stream_enc)
1720 			res_ctx->is_hpo_dp_stream_enc_acquired[i] = acquired;
1721 	}
1722 }
1723 #endif
1724 
1725 /* TODO: release audio object */
1726 void update_audio_usage(
1727 		struct resource_context *res_ctx,
1728 		const struct resource_pool *pool,
1729 		struct audio *audio,
1730 		bool acquired)
1731 {
1732 	int i;
1733 	for (i = 0; i < pool->audio_count; i++) {
1734 		if (pool->audios[i] == audio)
1735 			res_ctx->is_audio_acquired[i] = acquired;
1736 	}
1737 }
1738 
1739 static int acquire_first_free_pipe(
1740 		struct resource_context *res_ctx,
1741 		const struct resource_pool *pool,
1742 		struct dc_stream_state *stream)
1743 {
1744 	int i;
1745 
1746 	for (i = 0; i < pool->pipe_count; i++) {
1747 		if (!res_ctx->pipe_ctx[i].stream) {
1748 			struct pipe_ctx *pipe_ctx = &res_ctx->pipe_ctx[i];
1749 
1750 			pipe_ctx->stream_res.tg = pool->timing_generators[i];
1751 			pipe_ctx->plane_res.mi = pool->mis[i];
1752 			pipe_ctx->plane_res.hubp = pool->hubps[i];
1753 			pipe_ctx->plane_res.ipp = pool->ipps[i];
1754 			pipe_ctx->plane_res.xfm = pool->transforms[i];
1755 			pipe_ctx->plane_res.dpp = pool->dpps[i];
1756 			pipe_ctx->stream_res.opp = pool->opps[i];
1757 			if (pool->dpps[i])
1758 				pipe_ctx->plane_res.mpcc_inst = pool->dpps[i]->inst;
1759 			pipe_ctx->pipe_idx = i;
1760 
1761 
1762 			pipe_ctx->stream = stream;
1763 			return i;
1764 		}
1765 	}
1766 	return -1;
1767 }
1768 
1769 #if defined(CONFIG_DRM_AMD_DC_DCN)
1770 static struct hpo_dp_stream_encoder *find_first_free_match_hpo_dp_stream_enc_for_link(
1771 		struct resource_context *res_ctx,
1772 		const struct resource_pool *pool,
1773 		struct dc_stream_state *stream)
1774 {
1775 	int i;
1776 
1777 	for (i = 0; i < pool->hpo_dp_stream_enc_count; i++) {
1778 		if (!res_ctx->is_hpo_dp_stream_enc_acquired[i] &&
1779 				pool->hpo_dp_stream_enc[i]) {
1780 
1781 			return pool->hpo_dp_stream_enc[i];
1782 		}
1783 	}
1784 
1785 	return NULL;
1786 }
1787 #endif
1788 
1789 static struct audio *find_first_free_audio(
1790 		struct resource_context *res_ctx,
1791 		const struct resource_pool *pool,
1792 		enum engine_id id,
1793 		enum dce_version dc_version)
1794 {
1795 	int i, available_audio_count;
1796 
1797 	available_audio_count = pool->audio_count;
1798 
1799 	for (i = 0; i < available_audio_count; i++) {
1800 		if ((res_ctx->is_audio_acquired[i] == false) && (res_ctx->is_stream_enc_acquired[i] == true)) {
1801 			/*we have enough audio endpoint, find the matching inst*/
1802 			if (id != i)
1803 				continue;
1804 			return pool->audios[i];
1805 		}
1806 	}
1807 
1808 	/* use engine id to find free audio */
1809 	if ((id < available_audio_count) && (res_ctx->is_audio_acquired[id] == false)) {
1810 		return pool->audios[id];
1811 	}
1812 	/*not found the matching one, first come first serve*/
1813 	for (i = 0; i < available_audio_count; i++) {
1814 		if (res_ctx->is_audio_acquired[i] == false) {
1815 			return pool->audios[i];
1816 		}
1817 	}
1818 	return 0;
1819 }
1820 
1821 /*
1822  * dc_add_stream_to_ctx() - Add a new dc_stream_state to a dc_state.
1823  */
1824 enum dc_status dc_add_stream_to_ctx(
1825 		struct dc *dc,
1826 		struct dc_state *new_ctx,
1827 		struct dc_stream_state *stream)
1828 {
1829 	enum dc_status res;
1830 	DC_LOGGER_INIT(dc->ctx->logger);
1831 
1832 	if (new_ctx->stream_count >= dc->res_pool->timing_generator_count) {
1833 		DC_LOG_WARNING("Max streams reached, can't add stream %p !\n", stream);
1834 		return DC_ERROR_UNEXPECTED;
1835 	}
1836 
1837 	new_ctx->streams[new_ctx->stream_count] = stream;
1838 	dc_stream_retain(stream);
1839 	new_ctx->stream_count++;
1840 
1841 	res = dc->res_pool->funcs->add_stream_to_ctx(dc, new_ctx, stream);
1842 	if (res != DC_OK)
1843 		DC_LOG_WARNING("Adding stream %p to context failed with err %d!\n", stream, res);
1844 
1845 	return res;
1846 }
1847 
1848 /*
1849  * dc_remove_stream_from_ctx() - Remove a stream from a dc_state.
1850  */
1851 enum dc_status dc_remove_stream_from_ctx(
1852 			struct dc *dc,
1853 			struct dc_state *new_ctx,
1854 			struct dc_stream_state *stream)
1855 {
1856 	int i;
1857 	struct dc_context *dc_ctx = dc->ctx;
1858 	struct pipe_ctx *del_pipe = resource_get_head_pipe_for_stream(&new_ctx->res_ctx, stream);
1859 	struct pipe_ctx *odm_pipe;
1860 
1861 	if (!del_pipe) {
1862 		DC_ERROR("Pipe not found for stream %p !\n", stream);
1863 		return DC_ERROR_UNEXPECTED;
1864 	}
1865 
1866 	odm_pipe = del_pipe->next_odm_pipe;
1867 
1868 	/* Release primary pipe */
1869 	ASSERT(del_pipe->stream_res.stream_enc);
1870 	update_stream_engine_usage(
1871 			&new_ctx->res_ctx,
1872 				dc->res_pool,
1873 			del_pipe->stream_res.stream_enc,
1874 			false);
1875 	/* Release link encoder from stream in new dc_state. */
1876 	if (dc->res_pool->funcs->link_enc_unassign)
1877 		dc->res_pool->funcs->link_enc_unassign(new_ctx, del_pipe->stream);
1878 
1879 #if defined(CONFIG_DRM_AMD_DC_DCN)
1880 	if (is_dp_128b_132b_signal(del_pipe)) {
1881 		update_hpo_dp_stream_engine_usage(
1882 			&new_ctx->res_ctx, dc->res_pool,
1883 			del_pipe->stream_res.hpo_dp_stream_enc,
1884 			false);
1885 	}
1886 #endif
1887 
1888 	if (del_pipe->stream_res.audio)
1889 		update_audio_usage(
1890 			&new_ctx->res_ctx,
1891 			dc->res_pool,
1892 			del_pipe->stream_res.audio,
1893 			false);
1894 
1895 	resource_unreference_clock_source(&new_ctx->res_ctx,
1896 					  dc->res_pool,
1897 					  del_pipe->clock_source);
1898 
1899 	if (dc->res_pool->funcs->remove_stream_from_ctx)
1900 		dc->res_pool->funcs->remove_stream_from_ctx(dc, new_ctx, stream);
1901 
1902 	while (odm_pipe) {
1903 		struct pipe_ctx *next_odm_pipe = odm_pipe->next_odm_pipe;
1904 
1905 		memset(odm_pipe, 0, sizeof(*odm_pipe));
1906 		odm_pipe = next_odm_pipe;
1907 	}
1908 	memset(del_pipe, 0, sizeof(*del_pipe));
1909 
1910 	for (i = 0; i < new_ctx->stream_count; i++)
1911 		if (new_ctx->streams[i] == stream)
1912 			break;
1913 
1914 	if (new_ctx->streams[i] != stream) {
1915 		DC_ERROR("Context doesn't have stream %p !\n", stream);
1916 		return DC_ERROR_UNEXPECTED;
1917 	}
1918 
1919 	dc_stream_release(new_ctx->streams[i]);
1920 	new_ctx->stream_count--;
1921 
1922 	/* Trim back arrays */
1923 	for (; i < new_ctx->stream_count; i++) {
1924 		new_ctx->streams[i] = new_ctx->streams[i + 1];
1925 		new_ctx->stream_status[i] = new_ctx->stream_status[i + 1];
1926 	}
1927 
1928 	new_ctx->streams[new_ctx->stream_count] = NULL;
1929 	memset(
1930 			&new_ctx->stream_status[new_ctx->stream_count],
1931 			0,
1932 			sizeof(new_ctx->stream_status[0]));
1933 
1934 	return DC_OK;
1935 }
1936 
1937 static struct dc_stream_state *find_pll_sharable_stream(
1938 		struct dc_stream_state *stream_needs_pll,
1939 		struct dc_state *context)
1940 {
1941 	int i;
1942 
1943 	for (i = 0; i < context->stream_count; i++) {
1944 		struct dc_stream_state *stream_has_pll = context->streams[i];
1945 
1946 		/* We are looking for non dp, non virtual stream */
1947 		if (resource_are_streams_timing_synchronizable(
1948 			stream_needs_pll, stream_has_pll)
1949 			&& !dc_is_dp_signal(stream_has_pll->signal)
1950 			&& stream_has_pll->link->connector_signal
1951 			!= SIGNAL_TYPE_VIRTUAL)
1952 			return stream_has_pll;
1953 
1954 	}
1955 
1956 	return NULL;
1957 }
1958 
1959 static int get_norm_pix_clk(const struct dc_crtc_timing *timing)
1960 {
1961 	uint32_t pix_clk = timing->pix_clk_100hz;
1962 	uint32_t normalized_pix_clk = pix_clk;
1963 
1964 	if (timing->pixel_encoding == PIXEL_ENCODING_YCBCR420)
1965 		pix_clk /= 2;
1966 	if (timing->pixel_encoding != PIXEL_ENCODING_YCBCR422) {
1967 		switch (timing->display_color_depth) {
1968 		case COLOR_DEPTH_666:
1969 		case COLOR_DEPTH_888:
1970 			normalized_pix_clk = pix_clk;
1971 			break;
1972 		case COLOR_DEPTH_101010:
1973 			normalized_pix_clk = (pix_clk * 30) / 24;
1974 			break;
1975 		case COLOR_DEPTH_121212:
1976 			normalized_pix_clk = (pix_clk * 36) / 24;
1977 		break;
1978 		case COLOR_DEPTH_161616:
1979 			normalized_pix_clk = (pix_clk * 48) / 24;
1980 		break;
1981 		default:
1982 			ASSERT(0);
1983 		break;
1984 		}
1985 	}
1986 	return normalized_pix_clk;
1987 }
1988 
1989 static void calculate_phy_pix_clks(struct dc_stream_state *stream)
1990 {
1991 	/* update actual pixel clock on all streams */
1992 	if (dc_is_hdmi_signal(stream->signal))
1993 		stream->phy_pix_clk = get_norm_pix_clk(
1994 			&stream->timing) / 10;
1995 	else
1996 		stream->phy_pix_clk =
1997 			stream->timing.pix_clk_100hz / 10;
1998 
1999 	if (stream->timing.timing_3d_format == TIMING_3D_FORMAT_HW_FRAME_PACKING)
2000 		stream->phy_pix_clk *= 2;
2001 }
2002 
2003 static int acquire_resource_from_hw_enabled_state(
2004 		struct resource_context *res_ctx,
2005 		const struct resource_pool *pool,
2006 		struct dc_stream_state *stream)
2007 {
2008 	struct dc_link *link = stream->link;
2009 	unsigned int i, inst, tg_inst = 0;
2010 
2011 	/* Check for enabled DIG to identify enabled display */
2012 	if (!link->link_enc->funcs->is_dig_enabled(link->link_enc))
2013 		return -1;
2014 
2015 	inst = link->link_enc->funcs->get_dig_frontend(link->link_enc);
2016 
2017 	if (inst == ENGINE_ID_UNKNOWN)
2018 		return -1;
2019 
2020 	for (i = 0; i < pool->stream_enc_count; i++) {
2021 		if (pool->stream_enc[i]->id == inst) {
2022 			tg_inst = pool->stream_enc[i]->funcs->dig_source_otg(
2023 				pool->stream_enc[i]);
2024 			break;
2025 		}
2026 	}
2027 
2028 	// tg_inst not found
2029 	if (i == pool->stream_enc_count)
2030 		return -1;
2031 
2032 	if (tg_inst >= pool->timing_generator_count)
2033 		return -1;
2034 
2035 	if (!res_ctx->pipe_ctx[tg_inst].stream) {
2036 		struct pipe_ctx *pipe_ctx = &res_ctx->pipe_ctx[tg_inst];
2037 
2038 		pipe_ctx->stream_res.tg = pool->timing_generators[tg_inst];
2039 		pipe_ctx->plane_res.mi = pool->mis[tg_inst];
2040 		pipe_ctx->plane_res.hubp = pool->hubps[tg_inst];
2041 		pipe_ctx->plane_res.ipp = pool->ipps[tg_inst];
2042 		pipe_ctx->plane_res.xfm = pool->transforms[tg_inst];
2043 		pipe_ctx->plane_res.dpp = pool->dpps[tg_inst];
2044 		pipe_ctx->stream_res.opp = pool->opps[tg_inst];
2045 
2046 		if (pool->dpps[tg_inst]) {
2047 			pipe_ctx->plane_res.mpcc_inst = pool->dpps[tg_inst]->inst;
2048 
2049 			// Read DPP->MPCC->OPP Pipe from HW State
2050 			if (pool->mpc->funcs->read_mpcc_state) {
2051 				struct mpcc_state s = {0};
2052 
2053 				pool->mpc->funcs->read_mpcc_state(pool->mpc, pipe_ctx->plane_res.mpcc_inst, &s);
2054 
2055 				if (s.dpp_id < MAX_MPCC)
2056 					pool->mpc->mpcc_array[pipe_ctx->plane_res.mpcc_inst].dpp_id = s.dpp_id;
2057 
2058 				if (s.bot_mpcc_id < MAX_MPCC)
2059 					pool->mpc->mpcc_array[pipe_ctx->plane_res.mpcc_inst].mpcc_bot =
2060 							&pool->mpc->mpcc_array[s.bot_mpcc_id];
2061 
2062 				if (s.opp_id < MAX_OPP)
2063 					pipe_ctx->stream_res.opp->mpc_tree_params.opp_id = s.opp_id;
2064 			}
2065 		}
2066 		pipe_ctx->pipe_idx = tg_inst;
2067 
2068 		pipe_ctx->stream = stream;
2069 		return tg_inst;
2070 	}
2071 
2072 	return -1;
2073 }
2074 
2075 static void mark_seamless_boot_stream(
2076 		const struct dc  *dc,
2077 		struct dc_stream_state *stream)
2078 {
2079 	struct dc_bios *dcb = dc->ctx->dc_bios;
2080 
2081 	/* TODO: Check Linux */
2082 	if (dc->config.allow_seamless_boot_optimization &&
2083 			!dcb->funcs->is_accelerated_mode(dcb)) {
2084 		if (dc_validate_seamless_boot_timing(dc, stream->sink, &stream->timing))
2085 			stream->apply_seamless_boot_optimization = true;
2086 	}
2087 }
2088 
2089 enum dc_status resource_map_pool_resources(
2090 		const struct dc  *dc,
2091 		struct dc_state *context,
2092 		struct dc_stream_state *stream)
2093 {
2094 	const struct resource_pool *pool = dc->res_pool;
2095 	int i;
2096 	struct dc_context *dc_ctx = dc->ctx;
2097 	struct pipe_ctx *pipe_ctx = NULL;
2098 	int pipe_idx = -1;
2099 
2100 	calculate_phy_pix_clks(stream);
2101 
2102 	mark_seamless_boot_stream(dc, stream);
2103 
2104 	if (stream->apply_seamless_boot_optimization) {
2105 		pipe_idx = acquire_resource_from_hw_enabled_state(
2106 				&context->res_ctx,
2107 				pool,
2108 				stream);
2109 		if (pipe_idx < 0)
2110 			/* hw resource was assigned to other stream */
2111 			stream->apply_seamless_boot_optimization = false;
2112 	}
2113 
2114 	if (pipe_idx < 0)
2115 		/* acquire new resources */
2116 		pipe_idx = acquire_first_free_pipe(&context->res_ctx, pool, stream);
2117 
2118 #ifdef CONFIG_DRM_AMD_DC_DCN
2119 	if (pipe_idx < 0)
2120 		pipe_idx = acquire_first_split_pipe(&context->res_ctx, pool, stream);
2121 #endif
2122 
2123 	if (pipe_idx < 0 || context->res_ctx.pipe_ctx[pipe_idx].stream_res.tg == NULL)
2124 		return DC_NO_CONTROLLER_RESOURCE;
2125 
2126 	pipe_ctx = &context->res_ctx.pipe_ctx[pipe_idx];
2127 
2128 	pipe_ctx->stream_res.stream_enc =
2129 		dc->res_pool->funcs->find_first_free_match_stream_enc_for_link(
2130 			&context->res_ctx, pool, stream);
2131 
2132 	if (!pipe_ctx->stream_res.stream_enc)
2133 		return DC_NO_STREAM_ENC_RESOURCE;
2134 
2135 	update_stream_engine_usage(
2136 		&context->res_ctx, pool,
2137 		pipe_ctx->stream_res.stream_enc,
2138 		true);
2139 
2140 #if defined(CONFIG_DRM_AMD_DC_DCN)
2141 	/* Allocate DP HPO Stream Encoder based on signal, hw capabilities
2142 	 * and link settings
2143 	 */
2144 	if (dc_is_dp_signal(stream->signal) &&
2145 			dc->caps.dp_hpo) {
2146 		struct dc_link_settings link_settings = {0};
2147 
2148 		decide_link_settings(stream, &link_settings);
2149 		if (dp_get_link_encoding_format(&link_settings) == DP_128b_132b_ENCODING) {
2150 			pipe_ctx->stream_res.hpo_dp_stream_enc =
2151 					find_first_free_match_hpo_dp_stream_enc_for_link(
2152 							&context->res_ctx, pool, stream);
2153 
2154 			if (!pipe_ctx->stream_res.hpo_dp_stream_enc)
2155 				return DC_NO_STREAM_ENC_RESOURCE;
2156 
2157 			update_hpo_dp_stream_engine_usage(
2158 					&context->res_ctx, pool,
2159 					pipe_ctx->stream_res.hpo_dp_stream_enc,
2160 					true);
2161 		}
2162 	}
2163 #endif
2164 
2165 	/* TODO: Add check if ASIC support and EDID audio */
2166 	if (!stream->converter_disable_audio &&
2167 	    dc_is_audio_capable_signal(pipe_ctx->stream->signal) &&
2168 	    stream->audio_info.mode_count && stream->audio_info.flags.all) {
2169 		pipe_ctx->stream_res.audio = find_first_free_audio(
2170 		&context->res_ctx, pool, pipe_ctx->stream_res.stream_enc->id, dc_ctx->dce_version);
2171 
2172 		/*
2173 		 * Audio assigned in order first come first get.
2174 		 * There are asics which has number of audio
2175 		 * resources less then number of pipes
2176 		 */
2177 		if (pipe_ctx->stream_res.audio)
2178 			update_audio_usage(&context->res_ctx, pool,
2179 					   pipe_ctx->stream_res.audio, true);
2180 	}
2181 
2182 	/* Add ABM to the resource if on EDP */
2183 	if (pipe_ctx->stream && dc_is_embedded_signal(pipe_ctx->stream->signal)) {
2184 #if defined(CONFIG_DRM_AMD_DC_DCN)
2185 		if (pool->abm)
2186 			pipe_ctx->stream_res.abm = pool->abm;
2187 		else
2188 			pipe_ctx->stream_res.abm = pool->multiple_abms[pipe_ctx->stream_res.tg->inst];
2189 #else
2190 		pipe_ctx->stream_res.abm = pool->abm;
2191 #endif
2192 	}
2193 
2194 	for (i = 0; i < context->stream_count; i++)
2195 		if (context->streams[i] == stream) {
2196 			context->stream_status[i].primary_otg_inst = pipe_ctx->stream_res.tg->inst;
2197 			context->stream_status[i].stream_enc_inst = pipe_ctx->stream_res.stream_enc->stream_enc_inst;
2198 			context->stream_status[i].audio_inst =
2199 				pipe_ctx->stream_res.audio ? pipe_ctx->stream_res.audio->inst : -1;
2200 
2201 			return DC_OK;
2202 		}
2203 
2204 	DC_ERROR("Stream %p not found in new ctx!\n", stream);
2205 	return DC_ERROR_UNEXPECTED;
2206 }
2207 
2208 /**
2209  * dc_resource_state_copy_construct_current() - Creates a new dc_state from existing state
2210  * Is a shallow copy.  Increments refcounts on existing streams and planes.
2211  * @dc: copy out of dc->current_state
2212  * @dst_ctx: copy into this
2213  */
2214 void dc_resource_state_copy_construct_current(
2215 		const struct dc *dc,
2216 		struct dc_state *dst_ctx)
2217 {
2218 	dc_resource_state_copy_construct(dc->current_state, dst_ctx);
2219 }
2220 
2221 
2222 void dc_resource_state_construct(
2223 		const struct dc *dc,
2224 		struct dc_state *dst_ctx)
2225 {
2226 	dst_ctx->clk_mgr = dc->clk_mgr;
2227 }
2228 
2229 
2230 bool dc_resource_is_dsc_encoding_supported(const struct dc *dc)
2231 {
2232 	return dc->res_pool->res_cap->num_dsc > 0;
2233 }
2234 
2235 
2236 /**
2237  * dc_validate_global_state() - Determine if HW can support a given state
2238  * Checks HW resource availability and bandwidth requirement.
2239  * @dc: dc struct for this driver
2240  * @new_ctx: state to be validated
2241  * @fast_validate: set to true if only yes/no to support matters
2242  *
2243  * Return: DC_OK if the result can be programmed.  Otherwise, an error code.
2244  */
2245 enum dc_status dc_validate_global_state(
2246 		struct dc *dc,
2247 		struct dc_state *new_ctx,
2248 		bool fast_validate)
2249 {
2250 	enum dc_status result = DC_ERROR_UNEXPECTED;
2251 	int i, j;
2252 
2253 	if (!new_ctx)
2254 		return DC_ERROR_UNEXPECTED;
2255 #if defined(CONFIG_DRM_AMD_DC_DCN)
2256 
2257 	/*
2258 	 * Update link encoder to stream assignment.
2259 	 * TODO: Split out reason allocation from validation.
2260 	 */
2261 	if (dc->res_pool->funcs->link_encs_assign && fast_validate == false)
2262 		dc->res_pool->funcs->link_encs_assign(
2263 			dc, new_ctx, new_ctx->streams, new_ctx->stream_count);
2264 #endif
2265 
2266 	if (dc->res_pool->funcs->validate_global) {
2267 		result = dc->res_pool->funcs->validate_global(dc, new_ctx);
2268 		if (result != DC_OK)
2269 			return result;
2270 	}
2271 
2272 	for (i = 0; i < new_ctx->stream_count; i++) {
2273 		struct dc_stream_state *stream = new_ctx->streams[i];
2274 
2275 		for (j = 0; j < dc->res_pool->pipe_count; j++) {
2276 			struct pipe_ctx *pipe_ctx = &new_ctx->res_ctx.pipe_ctx[j];
2277 
2278 			if (pipe_ctx->stream != stream)
2279 				continue;
2280 
2281 			if (dc->res_pool->funcs->patch_unknown_plane_state &&
2282 					pipe_ctx->plane_state &&
2283 					pipe_ctx->plane_state->tiling_info.gfx9.swizzle == DC_SW_UNKNOWN) {
2284 				result = dc->res_pool->funcs->patch_unknown_plane_state(pipe_ctx->plane_state);
2285 				if (result != DC_OK)
2286 					return result;
2287 			}
2288 
2289 			/* Switch to dp clock source only if there is
2290 			 * no non dp stream that shares the same timing
2291 			 * with the dp stream.
2292 			 */
2293 			if (dc_is_dp_signal(pipe_ctx->stream->signal) &&
2294 				!find_pll_sharable_stream(stream, new_ctx)) {
2295 
2296 				resource_unreference_clock_source(
2297 						&new_ctx->res_ctx,
2298 						dc->res_pool,
2299 						pipe_ctx->clock_source);
2300 
2301 				pipe_ctx->clock_source = dc->res_pool->dp_clock_source;
2302 				resource_reference_clock_source(
2303 						&new_ctx->res_ctx,
2304 						dc->res_pool,
2305 						 pipe_ctx->clock_source);
2306 			}
2307 		}
2308 	}
2309 
2310 	result = resource_build_scaling_params_for_context(dc, new_ctx);
2311 
2312 	if (result == DC_OK)
2313 		if (!dc->res_pool->funcs->validate_bandwidth(dc, new_ctx, fast_validate))
2314 			result = DC_FAIL_BANDWIDTH_VALIDATE;
2315 
2316 	return result;
2317 }
2318 
2319 static void patch_gamut_packet_checksum(
2320 		struct dc_info_packet *gamut_packet)
2321 {
2322 	/* For gamut we recalc checksum */
2323 	if (gamut_packet->valid) {
2324 		uint8_t chk_sum = 0;
2325 		uint8_t *ptr;
2326 		uint8_t i;
2327 
2328 		/*start of the Gamut data. */
2329 		ptr = &gamut_packet->sb[3];
2330 
2331 		for (i = 0; i <= gamut_packet->sb[1]; i++)
2332 			chk_sum += ptr[i];
2333 
2334 		gamut_packet->sb[2] = (uint8_t) (0x100 - chk_sum);
2335 	}
2336 }
2337 
2338 static void set_avi_info_frame(
2339 		struct dc_info_packet *info_packet,
2340 		struct pipe_ctx *pipe_ctx)
2341 {
2342 	struct dc_stream_state *stream = pipe_ctx->stream;
2343 	enum dc_color_space color_space = COLOR_SPACE_UNKNOWN;
2344 	uint32_t pixel_encoding = 0;
2345 	enum scanning_type scan_type = SCANNING_TYPE_NODATA;
2346 	enum dc_aspect_ratio aspect = ASPECT_RATIO_NO_DATA;
2347 	bool itc = false;
2348 	uint8_t itc_value = 0;
2349 	uint8_t cn0_cn1 = 0;
2350 	unsigned int cn0_cn1_value = 0;
2351 	uint8_t *check_sum = NULL;
2352 	uint8_t byte_index = 0;
2353 	union hdmi_info_packet hdmi_info;
2354 	union display_content_support support = {0};
2355 	unsigned int vic = pipe_ctx->stream->timing.vic;
2356 	enum dc_timing_3d_format format;
2357 
2358 	memset(&hdmi_info, 0, sizeof(union hdmi_info_packet));
2359 
2360 	color_space = pipe_ctx->stream->output_color_space;
2361 	if (color_space == COLOR_SPACE_UNKNOWN)
2362 		color_space = (stream->timing.pixel_encoding == PIXEL_ENCODING_RGB) ?
2363 			COLOR_SPACE_SRGB:COLOR_SPACE_YCBCR709;
2364 
2365 	/* Initialize header */
2366 	hdmi_info.bits.header.info_frame_type = HDMI_INFOFRAME_TYPE_AVI;
2367 	/* InfoFrameVersion_3 is defined by CEA861F (Section 6.4), but shall
2368 	* not be used in HDMI 2.0 (Section 10.1) */
2369 	hdmi_info.bits.header.version = 2;
2370 	hdmi_info.bits.header.length = HDMI_AVI_INFOFRAME_SIZE;
2371 
2372 	/*
2373 	 * IDO-defined (Y2,Y1,Y0 = 1,1,1) shall not be used by devices built
2374 	 * according to HDMI 2.0 spec (Section 10.1)
2375 	 */
2376 
2377 	switch (stream->timing.pixel_encoding) {
2378 	case PIXEL_ENCODING_YCBCR422:
2379 		pixel_encoding = 1;
2380 		break;
2381 
2382 	case PIXEL_ENCODING_YCBCR444:
2383 		pixel_encoding = 2;
2384 		break;
2385 	case PIXEL_ENCODING_YCBCR420:
2386 		pixel_encoding = 3;
2387 		break;
2388 
2389 	case PIXEL_ENCODING_RGB:
2390 	default:
2391 		pixel_encoding = 0;
2392 	}
2393 
2394 	/* Y0_Y1_Y2 : The pixel encoding */
2395 	/* H14b AVI InfoFrame has extension on Y-field from 2 bits to 3 bits */
2396 	hdmi_info.bits.Y0_Y1_Y2 = pixel_encoding;
2397 
2398 	/* A0 = 1 Active Format Information valid */
2399 	hdmi_info.bits.A0 = ACTIVE_FORMAT_VALID;
2400 
2401 	/* B0, B1 = 3; Bar info data is valid */
2402 	hdmi_info.bits.B0_B1 = BAR_INFO_BOTH_VALID;
2403 
2404 	hdmi_info.bits.SC0_SC1 = PICTURE_SCALING_UNIFORM;
2405 
2406 	/* S0, S1 : Underscan / Overscan */
2407 	/* TODO: un-hardcode scan type */
2408 	scan_type = SCANNING_TYPE_UNDERSCAN;
2409 	hdmi_info.bits.S0_S1 = scan_type;
2410 
2411 	/* C0, C1 : Colorimetry */
2412 	if (color_space == COLOR_SPACE_YCBCR709 ||
2413 			color_space == COLOR_SPACE_YCBCR709_LIMITED)
2414 		hdmi_info.bits.C0_C1 = COLORIMETRY_ITU709;
2415 	else if (color_space == COLOR_SPACE_YCBCR601 ||
2416 			color_space == COLOR_SPACE_YCBCR601_LIMITED)
2417 		hdmi_info.bits.C0_C1 = COLORIMETRY_ITU601;
2418 	else {
2419 		hdmi_info.bits.C0_C1 = COLORIMETRY_NO_DATA;
2420 	}
2421 	if (color_space == COLOR_SPACE_2020_RGB_FULLRANGE ||
2422 			color_space == COLOR_SPACE_2020_RGB_LIMITEDRANGE ||
2423 			color_space == COLOR_SPACE_2020_YCBCR) {
2424 		hdmi_info.bits.EC0_EC2 = COLORIMETRYEX_BT2020RGBYCBCR;
2425 		hdmi_info.bits.C0_C1   = COLORIMETRY_EXTENDED;
2426 	} else if (color_space == COLOR_SPACE_ADOBERGB) {
2427 		hdmi_info.bits.EC0_EC2 = COLORIMETRYEX_ADOBERGB;
2428 		hdmi_info.bits.C0_C1   = COLORIMETRY_EXTENDED;
2429 	}
2430 
2431 	/* TODO: un-hardcode aspect ratio */
2432 	aspect = stream->timing.aspect_ratio;
2433 
2434 	switch (aspect) {
2435 	case ASPECT_RATIO_4_3:
2436 	case ASPECT_RATIO_16_9:
2437 		hdmi_info.bits.M0_M1 = aspect;
2438 		break;
2439 
2440 	case ASPECT_RATIO_NO_DATA:
2441 	case ASPECT_RATIO_64_27:
2442 	case ASPECT_RATIO_256_135:
2443 	default:
2444 		hdmi_info.bits.M0_M1 = 0;
2445 	}
2446 
2447 	/* Active Format Aspect ratio - same as Picture Aspect Ratio. */
2448 	hdmi_info.bits.R0_R3 = ACTIVE_FORMAT_ASPECT_RATIO_SAME_AS_PICTURE;
2449 
2450 	/* TODO: un-hardcode cn0_cn1 and itc */
2451 
2452 	cn0_cn1 = 0;
2453 	cn0_cn1_value = 0;
2454 
2455 	itc = true;
2456 	itc_value = 1;
2457 
2458 	support = stream->content_support;
2459 
2460 	if (itc) {
2461 		if (!support.bits.valid_content_type) {
2462 			cn0_cn1_value = 0;
2463 		} else {
2464 			if (cn0_cn1 == DISPLAY_CONTENT_TYPE_GRAPHICS) {
2465 				if (support.bits.graphics_content == 1) {
2466 					cn0_cn1_value = 0;
2467 				}
2468 			} else if (cn0_cn1 == DISPLAY_CONTENT_TYPE_PHOTO) {
2469 				if (support.bits.photo_content == 1) {
2470 					cn0_cn1_value = 1;
2471 				} else {
2472 					cn0_cn1_value = 0;
2473 					itc_value = 0;
2474 				}
2475 			} else if (cn0_cn1 == DISPLAY_CONTENT_TYPE_CINEMA) {
2476 				if (support.bits.cinema_content == 1) {
2477 					cn0_cn1_value = 2;
2478 				} else {
2479 					cn0_cn1_value = 0;
2480 					itc_value = 0;
2481 				}
2482 			} else if (cn0_cn1 == DISPLAY_CONTENT_TYPE_GAME) {
2483 				if (support.bits.game_content == 1) {
2484 					cn0_cn1_value = 3;
2485 				} else {
2486 					cn0_cn1_value = 0;
2487 					itc_value = 0;
2488 				}
2489 			}
2490 		}
2491 		hdmi_info.bits.CN0_CN1 = cn0_cn1_value;
2492 		hdmi_info.bits.ITC = itc_value;
2493 	}
2494 
2495 	if (stream->qs_bit == 1) {
2496 		if (color_space == COLOR_SPACE_SRGB ||
2497 			color_space == COLOR_SPACE_2020_RGB_FULLRANGE)
2498 			hdmi_info.bits.Q0_Q1   = RGB_QUANTIZATION_FULL_RANGE;
2499 		else if (color_space == COLOR_SPACE_SRGB_LIMITED ||
2500 					color_space == COLOR_SPACE_2020_RGB_LIMITEDRANGE)
2501 			hdmi_info.bits.Q0_Q1   = RGB_QUANTIZATION_LIMITED_RANGE;
2502 		else
2503 			hdmi_info.bits.Q0_Q1   = RGB_QUANTIZATION_DEFAULT_RANGE;
2504 	} else
2505 		hdmi_info.bits.Q0_Q1   = RGB_QUANTIZATION_DEFAULT_RANGE;
2506 
2507 	/* TODO : We should handle YCC quantization */
2508 	/* but we do not have matrix calculation */
2509 	if (stream->qy_bit == 1) {
2510 		if (color_space == COLOR_SPACE_SRGB ||
2511 			color_space == COLOR_SPACE_2020_RGB_FULLRANGE)
2512 			hdmi_info.bits.YQ0_YQ1 = YYC_QUANTIZATION_LIMITED_RANGE;
2513 		else if (color_space == COLOR_SPACE_SRGB_LIMITED ||
2514 					color_space == COLOR_SPACE_2020_RGB_LIMITEDRANGE)
2515 			hdmi_info.bits.YQ0_YQ1 = YYC_QUANTIZATION_LIMITED_RANGE;
2516 		else
2517 			hdmi_info.bits.YQ0_YQ1 = YYC_QUANTIZATION_LIMITED_RANGE;
2518 	} else
2519 		hdmi_info.bits.YQ0_YQ1 = YYC_QUANTIZATION_LIMITED_RANGE;
2520 
2521 	///VIC
2522 	format = stream->timing.timing_3d_format;
2523 	/*todo, add 3DStereo support*/
2524 	if (format != TIMING_3D_FORMAT_NONE) {
2525 		// Based on HDMI specs hdmi vic needs to be converted to cea vic when 3D is enabled
2526 		switch (pipe_ctx->stream->timing.hdmi_vic) {
2527 		case 1:
2528 			vic = 95;
2529 			break;
2530 		case 2:
2531 			vic = 94;
2532 			break;
2533 		case 3:
2534 			vic = 93;
2535 			break;
2536 		case 4:
2537 			vic = 98;
2538 			break;
2539 		default:
2540 			break;
2541 		}
2542 	}
2543 	/* If VIC >= 128, the Source shall use AVI InfoFrame Version 3*/
2544 	hdmi_info.bits.VIC0_VIC7 = vic;
2545 	if (vic >= 128)
2546 		hdmi_info.bits.header.version = 3;
2547 	/* If (C1, C0)=(1, 1) and (EC2, EC1, EC0)=(1, 1, 1),
2548 	 * the Source shall use 20 AVI InfoFrame Version 4
2549 	 */
2550 	if (hdmi_info.bits.C0_C1 == COLORIMETRY_EXTENDED &&
2551 			hdmi_info.bits.EC0_EC2 == COLORIMETRYEX_RESERVED) {
2552 		hdmi_info.bits.header.version = 4;
2553 		hdmi_info.bits.header.length = 14;
2554 	}
2555 
2556 	/* pixel repetition
2557 	 * PR0 - PR3 start from 0 whereas pHwPathMode->mode.timing.flags.pixel
2558 	 * repetition start from 1 */
2559 	hdmi_info.bits.PR0_PR3 = 0;
2560 
2561 	/* Bar Info
2562 	 * barTop:    Line Number of End of Top Bar.
2563 	 * barBottom: Line Number of Start of Bottom Bar.
2564 	 * barLeft:   Pixel Number of End of Left Bar.
2565 	 * barRight:  Pixel Number of Start of Right Bar. */
2566 	hdmi_info.bits.bar_top = stream->timing.v_border_top;
2567 	hdmi_info.bits.bar_bottom = (stream->timing.v_total
2568 			- stream->timing.v_border_bottom + 1);
2569 	hdmi_info.bits.bar_left  = stream->timing.h_border_left;
2570 	hdmi_info.bits.bar_right = (stream->timing.h_total
2571 			- stream->timing.h_border_right + 1);
2572 
2573     /* Additional Colorimetry Extension
2574      * Used in conduction with C0-C1 and EC0-EC2
2575      * 0 = DCI-P3 RGB (D65)
2576      * 1 = DCI-P3 RGB (theater)
2577      */
2578 	hdmi_info.bits.ACE0_ACE3 = 0;
2579 
2580 	/* check_sum - Calculate AFMT_AVI_INFO0 ~ AFMT_AVI_INFO3 */
2581 	check_sum = &hdmi_info.packet_raw_data.sb[0];
2582 
2583 	*check_sum = HDMI_INFOFRAME_TYPE_AVI + hdmi_info.bits.header.length + hdmi_info.bits.header.version;
2584 
2585 	for (byte_index = 1; byte_index <= hdmi_info.bits.header.length; byte_index++)
2586 		*check_sum += hdmi_info.packet_raw_data.sb[byte_index];
2587 
2588 	/* one byte complement */
2589 	*check_sum = (uint8_t) (0x100 - *check_sum);
2590 
2591 	/* Store in hw_path_mode */
2592 	info_packet->hb0 = hdmi_info.packet_raw_data.hb0;
2593 	info_packet->hb1 = hdmi_info.packet_raw_data.hb1;
2594 	info_packet->hb2 = hdmi_info.packet_raw_data.hb2;
2595 
2596 	for (byte_index = 0; byte_index < sizeof(hdmi_info.packet_raw_data.sb); byte_index++)
2597 		info_packet->sb[byte_index] = hdmi_info.packet_raw_data.sb[byte_index];
2598 
2599 	info_packet->valid = true;
2600 }
2601 
2602 static void set_vendor_info_packet(
2603 		struct dc_info_packet *info_packet,
2604 		struct dc_stream_state *stream)
2605 {
2606 	/* SPD info packet for FreeSync */
2607 
2608 	/* Check if Freesync is supported. Return if false. If true,
2609 	 * set the corresponding bit in the info packet
2610 	 */
2611 	if (!stream->vsp_infopacket.valid)
2612 		return;
2613 
2614 	*info_packet = stream->vsp_infopacket;
2615 }
2616 
2617 static void set_spd_info_packet(
2618 		struct dc_info_packet *info_packet,
2619 		struct dc_stream_state *stream)
2620 {
2621 	/* SPD info packet for FreeSync */
2622 
2623 	/* Check if Freesync is supported. Return if false. If true,
2624 	 * set the corresponding bit in the info packet
2625 	 */
2626 	if (!stream->vrr_infopacket.valid)
2627 		return;
2628 
2629 	*info_packet = stream->vrr_infopacket;
2630 }
2631 
2632 static void set_hdr_static_info_packet(
2633 		struct dc_info_packet *info_packet,
2634 		struct dc_stream_state *stream)
2635 {
2636 	/* HDR Static Metadata info packet for HDR10 */
2637 
2638 	if (!stream->hdr_static_metadata.valid ||
2639 			stream->use_dynamic_meta)
2640 		return;
2641 
2642 	*info_packet = stream->hdr_static_metadata;
2643 }
2644 
2645 static void set_vsc_info_packet(
2646 		struct dc_info_packet *info_packet,
2647 		struct dc_stream_state *stream)
2648 {
2649 	if (!stream->vsc_infopacket.valid)
2650 		return;
2651 
2652 	*info_packet = stream->vsc_infopacket;
2653 }
2654 
2655 void dc_resource_state_destruct(struct dc_state *context)
2656 {
2657 	int i, j;
2658 
2659 	for (i = 0; i < context->stream_count; i++) {
2660 		for (j = 0; j < context->stream_status[i].plane_count; j++)
2661 			dc_plane_state_release(
2662 				context->stream_status[i].plane_states[j]);
2663 
2664 		context->stream_status[i].plane_count = 0;
2665 		dc_stream_release(context->streams[i]);
2666 		context->streams[i] = NULL;
2667 	}
2668 	context->stream_count = 0;
2669 }
2670 
2671 void dc_resource_state_copy_construct(
2672 		const struct dc_state *src_ctx,
2673 		struct dc_state *dst_ctx)
2674 {
2675 	int i, j;
2676 	struct kref refcount = dst_ctx->refcount;
2677 
2678 	*dst_ctx = *src_ctx;
2679 
2680 	for (i = 0; i < MAX_PIPES; i++) {
2681 		struct pipe_ctx *cur_pipe = &dst_ctx->res_ctx.pipe_ctx[i];
2682 
2683 		if (cur_pipe->top_pipe)
2684 			cur_pipe->top_pipe =  &dst_ctx->res_ctx.pipe_ctx[cur_pipe->top_pipe->pipe_idx];
2685 
2686 		if (cur_pipe->bottom_pipe)
2687 			cur_pipe->bottom_pipe = &dst_ctx->res_ctx.pipe_ctx[cur_pipe->bottom_pipe->pipe_idx];
2688 
2689 		if (cur_pipe->next_odm_pipe)
2690 			cur_pipe->next_odm_pipe =  &dst_ctx->res_ctx.pipe_ctx[cur_pipe->next_odm_pipe->pipe_idx];
2691 
2692 		if (cur_pipe->prev_odm_pipe)
2693 			cur_pipe->prev_odm_pipe = &dst_ctx->res_ctx.pipe_ctx[cur_pipe->prev_odm_pipe->pipe_idx];
2694 	}
2695 
2696 	for (i = 0; i < dst_ctx->stream_count; i++) {
2697 		dc_stream_retain(dst_ctx->streams[i]);
2698 		for (j = 0; j < dst_ctx->stream_status[i].plane_count; j++)
2699 			dc_plane_state_retain(
2700 				dst_ctx->stream_status[i].plane_states[j]);
2701 	}
2702 
2703 	/* context refcount should not be overridden */
2704 	dst_ctx->refcount = refcount;
2705 
2706 }
2707 
2708 struct clock_source *dc_resource_find_first_free_pll(
2709 		struct resource_context *res_ctx,
2710 		const struct resource_pool *pool)
2711 {
2712 	int i;
2713 
2714 	for (i = 0; i < pool->clk_src_count; ++i) {
2715 		if (res_ctx->clock_source_ref_count[i] == 0)
2716 			return pool->clock_sources[i];
2717 	}
2718 
2719 	return NULL;
2720 }
2721 
2722 void resource_build_info_frame(struct pipe_ctx *pipe_ctx)
2723 {
2724 	enum signal_type signal = SIGNAL_TYPE_NONE;
2725 	struct encoder_info_frame *info = &pipe_ctx->stream_res.encoder_info_frame;
2726 
2727 	/* default all packets to invalid */
2728 	info->avi.valid = false;
2729 	info->gamut.valid = false;
2730 	info->vendor.valid = false;
2731 	info->spd.valid = false;
2732 	info->hdrsmd.valid = false;
2733 	info->vsc.valid = false;
2734 
2735 	signal = pipe_ctx->stream->signal;
2736 
2737 	/* HDMi and DP have different info packets*/
2738 	if (dc_is_hdmi_signal(signal)) {
2739 		set_avi_info_frame(&info->avi, pipe_ctx);
2740 
2741 		set_vendor_info_packet(&info->vendor, pipe_ctx->stream);
2742 
2743 		set_spd_info_packet(&info->spd, pipe_ctx->stream);
2744 
2745 		set_hdr_static_info_packet(&info->hdrsmd, pipe_ctx->stream);
2746 
2747 	} else if (dc_is_dp_signal(signal)) {
2748 		set_vsc_info_packet(&info->vsc, pipe_ctx->stream);
2749 
2750 		set_spd_info_packet(&info->spd, pipe_ctx->stream);
2751 
2752 		set_hdr_static_info_packet(&info->hdrsmd, pipe_ctx->stream);
2753 	}
2754 
2755 	patch_gamut_packet_checksum(&info->gamut);
2756 }
2757 
2758 enum dc_status resource_map_clock_resources(
2759 		const struct dc  *dc,
2760 		struct dc_state *context,
2761 		struct dc_stream_state *stream)
2762 {
2763 	/* acquire new resources */
2764 	const struct resource_pool *pool = dc->res_pool;
2765 	struct pipe_ctx *pipe_ctx = resource_get_head_pipe_for_stream(
2766 				&context->res_ctx, stream);
2767 
2768 	if (!pipe_ctx)
2769 		return DC_ERROR_UNEXPECTED;
2770 
2771 	if (dc_is_dp_signal(pipe_ctx->stream->signal)
2772 		|| pipe_ctx->stream->signal == SIGNAL_TYPE_VIRTUAL)
2773 		pipe_ctx->clock_source = pool->dp_clock_source;
2774 	else {
2775 		pipe_ctx->clock_source = NULL;
2776 
2777 		if (!dc->config.disable_disp_pll_sharing)
2778 			pipe_ctx->clock_source = resource_find_used_clk_src_for_sharing(
2779 				&context->res_ctx,
2780 				pipe_ctx);
2781 
2782 		if (pipe_ctx->clock_source == NULL)
2783 			pipe_ctx->clock_source =
2784 				dc_resource_find_first_free_pll(
2785 					&context->res_ctx,
2786 					pool);
2787 	}
2788 
2789 	if (pipe_ctx->clock_source == NULL)
2790 		return DC_NO_CLOCK_SOURCE_RESOURCE;
2791 
2792 	resource_reference_clock_source(
2793 		&context->res_ctx, pool,
2794 		pipe_ctx->clock_source);
2795 
2796 	return DC_OK;
2797 }
2798 
2799 /*
2800  * Note: We need to disable output if clock sources change,
2801  * since bios does optimization and doesn't apply if changing
2802  * PHY when not already disabled.
2803  */
2804 bool pipe_need_reprogram(
2805 		struct pipe_ctx *pipe_ctx_old,
2806 		struct pipe_ctx *pipe_ctx)
2807 {
2808 	if (!pipe_ctx_old->stream)
2809 		return false;
2810 
2811 	if (pipe_ctx_old->stream->sink != pipe_ctx->stream->sink)
2812 		return true;
2813 
2814 	if (pipe_ctx_old->stream->signal != pipe_ctx->stream->signal)
2815 		return true;
2816 
2817 	if (pipe_ctx_old->stream_res.audio != pipe_ctx->stream_res.audio)
2818 		return true;
2819 
2820 	if (pipe_ctx_old->clock_source != pipe_ctx->clock_source
2821 			&& pipe_ctx_old->stream != pipe_ctx->stream)
2822 		return true;
2823 
2824 	if (pipe_ctx_old->stream_res.stream_enc != pipe_ctx->stream_res.stream_enc)
2825 		return true;
2826 
2827 	if (is_timing_changed(pipe_ctx_old->stream, pipe_ctx->stream))
2828 		return true;
2829 
2830 	if (pipe_ctx_old->stream->dpms_off != pipe_ctx->stream->dpms_off)
2831 		return true;
2832 
2833 	if (false == pipe_ctx_old->stream->link->link_state_valid &&
2834 		false == pipe_ctx_old->stream->dpms_off)
2835 		return true;
2836 
2837 	if (pipe_ctx_old->stream_res.dsc != pipe_ctx->stream_res.dsc)
2838 		return true;
2839 
2840 #if defined(CONFIG_DRM_AMD_DC_DCN)
2841 	if (pipe_ctx_old->stream_res.hpo_dp_stream_enc != pipe_ctx->stream_res.hpo_dp_stream_enc)
2842 		return true;
2843 #endif
2844 
2845 	/* DIG link encoder resource assignment for stream changed. */
2846 	if (pipe_ctx_old->stream->ctx->dc->res_pool->funcs->link_encs_assign) {
2847 		bool need_reprogram = false;
2848 		struct dc *dc = pipe_ctx_old->stream->ctx->dc;
2849 		enum link_enc_cfg_mode mode = dc->current_state->res_ctx.link_enc_cfg_ctx.mode;
2850 
2851 		dc->current_state->res_ctx.link_enc_cfg_ctx.mode = LINK_ENC_CFG_STEADY;
2852 		if (link_enc_cfg_get_link_enc_used_by_stream(dc, pipe_ctx_old->stream) != pipe_ctx->stream->link_enc)
2853 			need_reprogram = true;
2854 		dc->current_state->res_ctx.link_enc_cfg_ctx.mode = mode;
2855 
2856 		return need_reprogram;
2857 	}
2858 
2859 	return false;
2860 }
2861 
2862 void resource_build_bit_depth_reduction_params(struct dc_stream_state *stream,
2863 		struct bit_depth_reduction_params *fmt_bit_depth)
2864 {
2865 	enum dc_dither_option option = stream->dither_option;
2866 	enum dc_pixel_encoding pixel_encoding =
2867 			stream->timing.pixel_encoding;
2868 
2869 	memset(fmt_bit_depth, 0, sizeof(*fmt_bit_depth));
2870 
2871 	if (option == DITHER_OPTION_DEFAULT) {
2872 		switch (stream->timing.display_color_depth) {
2873 		case COLOR_DEPTH_666:
2874 			option = DITHER_OPTION_SPATIAL6;
2875 			break;
2876 		case COLOR_DEPTH_888:
2877 			option = DITHER_OPTION_SPATIAL8;
2878 			break;
2879 		case COLOR_DEPTH_101010:
2880 			option = DITHER_OPTION_SPATIAL10;
2881 			break;
2882 		default:
2883 			option = DITHER_OPTION_DISABLE;
2884 		}
2885 	}
2886 
2887 	if (option == DITHER_OPTION_DISABLE)
2888 		return;
2889 
2890 	if (option == DITHER_OPTION_TRUN6) {
2891 		fmt_bit_depth->flags.TRUNCATE_ENABLED = 1;
2892 		fmt_bit_depth->flags.TRUNCATE_DEPTH = 0;
2893 	} else if (option == DITHER_OPTION_TRUN8 ||
2894 			option == DITHER_OPTION_TRUN8_SPATIAL6 ||
2895 			option == DITHER_OPTION_TRUN8_FM6) {
2896 		fmt_bit_depth->flags.TRUNCATE_ENABLED = 1;
2897 		fmt_bit_depth->flags.TRUNCATE_DEPTH = 1;
2898 	} else if (option == DITHER_OPTION_TRUN10        ||
2899 			option == DITHER_OPTION_TRUN10_SPATIAL6   ||
2900 			option == DITHER_OPTION_TRUN10_SPATIAL8   ||
2901 			option == DITHER_OPTION_TRUN10_FM8     ||
2902 			option == DITHER_OPTION_TRUN10_FM6     ||
2903 			option == DITHER_OPTION_TRUN10_SPATIAL8_FM6) {
2904 		fmt_bit_depth->flags.TRUNCATE_ENABLED = 1;
2905 		fmt_bit_depth->flags.TRUNCATE_DEPTH = 2;
2906 	}
2907 
2908 	/* special case - Formatter can only reduce by 4 bits at most.
2909 	 * When reducing from 12 to 6 bits,
2910 	 * HW recommends we use trunc with round mode
2911 	 * (if we did nothing, trunc to 10 bits would be used)
2912 	 * note that any 12->10 bit reduction is ignored prior to DCE8,
2913 	 * as the input was 10 bits.
2914 	 */
2915 	if (option == DITHER_OPTION_SPATIAL6_FRAME_RANDOM ||
2916 			option == DITHER_OPTION_SPATIAL6 ||
2917 			option == DITHER_OPTION_FM6) {
2918 		fmt_bit_depth->flags.TRUNCATE_ENABLED = 1;
2919 		fmt_bit_depth->flags.TRUNCATE_DEPTH = 2;
2920 		fmt_bit_depth->flags.TRUNCATE_MODE = 1;
2921 	}
2922 
2923 	/* spatial dither
2924 	 * note that spatial modes 1-3 are never used
2925 	 */
2926 	if (option == DITHER_OPTION_SPATIAL6_FRAME_RANDOM            ||
2927 			option == DITHER_OPTION_SPATIAL6 ||
2928 			option == DITHER_OPTION_TRUN10_SPATIAL6      ||
2929 			option == DITHER_OPTION_TRUN8_SPATIAL6) {
2930 		fmt_bit_depth->flags.SPATIAL_DITHER_ENABLED = 1;
2931 		fmt_bit_depth->flags.SPATIAL_DITHER_DEPTH = 0;
2932 		fmt_bit_depth->flags.HIGHPASS_RANDOM = 1;
2933 		fmt_bit_depth->flags.RGB_RANDOM =
2934 				(pixel_encoding == PIXEL_ENCODING_RGB) ? 1 : 0;
2935 	} else if (option == DITHER_OPTION_SPATIAL8_FRAME_RANDOM            ||
2936 			option == DITHER_OPTION_SPATIAL8 ||
2937 			option == DITHER_OPTION_SPATIAL8_FM6        ||
2938 			option == DITHER_OPTION_TRUN10_SPATIAL8      ||
2939 			option == DITHER_OPTION_TRUN10_SPATIAL8_FM6) {
2940 		fmt_bit_depth->flags.SPATIAL_DITHER_ENABLED = 1;
2941 		fmt_bit_depth->flags.SPATIAL_DITHER_DEPTH = 1;
2942 		fmt_bit_depth->flags.HIGHPASS_RANDOM = 1;
2943 		fmt_bit_depth->flags.RGB_RANDOM =
2944 				(pixel_encoding == PIXEL_ENCODING_RGB) ? 1 : 0;
2945 	} else if (option == DITHER_OPTION_SPATIAL10_FRAME_RANDOM ||
2946 			option == DITHER_OPTION_SPATIAL10 ||
2947 			option == DITHER_OPTION_SPATIAL10_FM8 ||
2948 			option == DITHER_OPTION_SPATIAL10_FM6) {
2949 		fmt_bit_depth->flags.SPATIAL_DITHER_ENABLED = 1;
2950 		fmt_bit_depth->flags.SPATIAL_DITHER_DEPTH = 2;
2951 		fmt_bit_depth->flags.HIGHPASS_RANDOM = 1;
2952 		fmt_bit_depth->flags.RGB_RANDOM =
2953 				(pixel_encoding == PIXEL_ENCODING_RGB) ? 1 : 0;
2954 	}
2955 
2956 	if (option == DITHER_OPTION_SPATIAL6 ||
2957 			option == DITHER_OPTION_SPATIAL8 ||
2958 			option == DITHER_OPTION_SPATIAL10) {
2959 		fmt_bit_depth->flags.FRAME_RANDOM = 0;
2960 	} else {
2961 		fmt_bit_depth->flags.FRAME_RANDOM = 1;
2962 	}
2963 
2964 	//////////////////////
2965 	//// temporal dither
2966 	//////////////////////
2967 	if (option == DITHER_OPTION_FM6           ||
2968 			option == DITHER_OPTION_SPATIAL8_FM6     ||
2969 			option == DITHER_OPTION_SPATIAL10_FM6     ||
2970 			option == DITHER_OPTION_TRUN10_FM6     ||
2971 			option == DITHER_OPTION_TRUN8_FM6      ||
2972 			option == DITHER_OPTION_TRUN10_SPATIAL8_FM6) {
2973 		fmt_bit_depth->flags.FRAME_MODULATION_ENABLED = 1;
2974 		fmt_bit_depth->flags.FRAME_MODULATION_DEPTH = 0;
2975 	} else if (option == DITHER_OPTION_FM8        ||
2976 			option == DITHER_OPTION_SPATIAL10_FM8  ||
2977 			option == DITHER_OPTION_TRUN10_FM8) {
2978 		fmt_bit_depth->flags.FRAME_MODULATION_ENABLED = 1;
2979 		fmt_bit_depth->flags.FRAME_MODULATION_DEPTH = 1;
2980 	} else if (option == DITHER_OPTION_FM10) {
2981 		fmt_bit_depth->flags.FRAME_MODULATION_ENABLED = 1;
2982 		fmt_bit_depth->flags.FRAME_MODULATION_DEPTH = 2;
2983 	}
2984 
2985 	fmt_bit_depth->pixel_encoding = pixel_encoding;
2986 }
2987 
2988 enum dc_status dc_validate_stream(struct dc *dc, struct dc_stream_state *stream)
2989 {
2990 	struct dc_link *link = stream->link;
2991 	struct timing_generator *tg = dc->res_pool->timing_generators[0];
2992 	enum dc_status res = DC_OK;
2993 
2994 	calculate_phy_pix_clks(stream);
2995 
2996 	if (!tg->funcs->validate_timing(tg, &stream->timing))
2997 		res = DC_FAIL_CONTROLLER_VALIDATE;
2998 
2999 	if (res == DC_OK) {
3000 		if (link->ep_type == DISPLAY_ENDPOINT_PHY &&
3001 				!link->link_enc->funcs->validate_output_with_stream(
3002 						link->link_enc, stream))
3003 			res = DC_FAIL_ENC_VALIDATE;
3004 	}
3005 
3006 	/* TODO: validate audio ASIC caps, encoder */
3007 
3008 	if (res == DC_OK)
3009 		res = dc_link_validate_mode_timing(stream,
3010 		      link,
3011 		      &stream->timing);
3012 
3013 	return res;
3014 }
3015 
3016 enum dc_status dc_validate_plane(struct dc *dc, const struct dc_plane_state *plane_state)
3017 {
3018 	enum dc_status res = DC_OK;
3019 
3020 	/* check if surface has invalid dimensions */
3021 	if (plane_state->src_rect.width == 0 || plane_state->src_rect.height == 0 ||
3022 		plane_state->dst_rect.width == 0 || plane_state->dst_rect.height == 0)
3023 		return DC_FAIL_SURFACE_VALIDATE;
3024 
3025 	/* TODO For now validates pixel format only */
3026 	if (dc->res_pool->funcs->validate_plane)
3027 		return dc->res_pool->funcs->validate_plane(plane_state, &dc->caps);
3028 
3029 	return res;
3030 }
3031 
3032 unsigned int resource_pixel_format_to_bpp(enum surface_pixel_format format)
3033 {
3034 	switch (format) {
3035 	case SURFACE_PIXEL_FORMAT_GRPH_PALETA_256_COLORS:
3036 		return 8;
3037 	case SURFACE_PIXEL_FORMAT_VIDEO_420_YCbCr:
3038 	case SURFACE_PIXEL_FORMAT_VIDEO_420_YCrCb:
3039 		return 12;
3040 	case SURFACE_PIXEL_FORMAT_GRPH_ARGB1555:
3041 	case SURFACE_PIXEL_FORMAT_GRPH_RGB565:
3042 	case SURFACE_PIXEL_FORMAT_VIDEO_420_10bpc_YCbCr:
3043 	case SURFACE_PIXEL_FORMAT_VIDEO_420_10bpc_YCrCb:
3044 		return 16;
3045 	case SURFACE_PIXEL_FORMAT_GRPH_ARGB8888:
3046 	case SURFACE_PIXEL_FORMAT_GRPH_ABGR8888:
3047 	case SURFACE_PIXEL_FORMAT_GRPH_ARGB2101010:
3048 	case SURFACE_PIXEL_FORMAT_GRPH_ABGR2101010:
3049 	case SURFACE_PIXEL_FORMAT_GRPH_ABGR2101010_XR_BIAS:
3050 #if defined(CONFIG_DRM_AMD_DC_DCN)
3051 	case SURFACE_PIXEL_FORMAT_GRPH_RGBE:
3052 	case SURFACE_PIXEL_FORMAT_GRPH_RGBE_ALPHA:
3053 #endif
3054 		return 32;
3055 	case SURFACE_PIXEL_FORMAT_GRPH_ARGB16161616:
3056 	case SURFACE_PIXEL_FORMAT_GRPH_ABGR16161616:
3057 	case SURFACE_PIXEL_FORMAT_GRPH_ARGB16161616F:
3058 	case SURFACE_PIXEL_FORMAT_GRPH_ABGR16161616F:
3059 		return 64;
3060 	default:
3061 		ASSERT_CRITICAL(false);
3062 		return -1;
3063 	}
3064 }
3065 static unsigned int get_max_audio_sample_rate(struct audio_mode *modes)
3066 {
3067 	if (modes) {
3068 		if (modes->sample_rates.rate.RATE_192)
3069 			return 192000;
3070 		if (modes->sample_rates.rate.RATE_176_4)
3071 			return 176400;
3072 		if (modes->sample_rates.rate.RATE_96)
3073 			return 96000;
3074 		if (modes->sample_rates.rate.RATE_88_2)
3075 			return 88200;
3076 		if (modes->sample_rates.rate.RATE_48)
3077 			return 48000;
3078 		if (modes->sample_rates.rate.RATE_44_1)
3079 			return 44100;
3080 		if (modes->sample_rates.rate.RATE_32)
3081 			return 32000;
3082 	}
3083 	/*original logic when no audio info*/
3084 	return 441000;
3085 }
3086 
3087 void get_audio_check(struct audio_info *aud_modes,
3088 	struct audio_check *audio_chk)
3089 {
3090 	unsigned int i;
3091 	unsigned int max_sample_rate = 0;
3092 
3093 	if (aud_modes) {
3094 		audio_chk->audio_packet_type = 0x2;/*audio sample packet AP = .25 for layout0, 1 for layout1*/
3095 
3096 		audio_chk->max_audiosample_rate = 0;
3097 		for (i = 0; i < aud_modes->mode_count; i++) {
3098 			max_sample_rate = get_max_audio_sample_rate(&aud_modes->modes[i]);
3099 			if (audio_chk->max_audiosample_rate < max_sample_rate)
3100 				audio_chk->max_audiosample_rate = max_sample_rate;
3101 			/*dts takes the same as type 2: AP = 0.25*/
3102 		}
3103 		/*check which one take more bandwidth*/
3104 		if (audio_chk->max_audiosample_rate > 192000)
3105 			audio_chk->audio_packet_type = 0x9;/*AP =1*/
3106 		audio_chk->acat = 0;/*not support*/
3107 	}
3108 }
3109 
3110 #if defined(CONFIG_DRM_AMD_DC_DCN)
3111 struct hpo_dp_link_encoder *resource_get_unused_hpo_dp_link_encoder(
3112 		const struct resource_pool *pool)
3113 {
3114 	uint8_t i;
3115 	struct hpo_dp_link_encoder *enc = NULL;
3116 
3117 	ASSERT(pool->hpo_dp_link_enc_count <= MAX_HPO_DP2_LINK_ENCODERS);
3118 
3119 	for (i = 0; i < pool->hpo_dp_link_enc_count; i++) {
3120 		if (pool->hpo_dp_link_enc[i]->transmitter == TRANSMITTER_UNKNOWN) {
3121 			enc = pool->hpo_dp_link_enc[i];
3122 			break;
3123 		}
3124 	}
3125 
3126 	return enc;
3127 }
3128 #endif
3129