1 /*
2  * Copyright 2016 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 
27 #include "dm_services.h"
28 #include "dm_helpers.h"
29 #include "core_types.h"
30 #include "resource.h"
31 #include "dccg.h"
32 #include "dce/dce_hwseq.h"
33 #include "clk_mgr.h"
34 #include "reg_helper.h"
35 #include "abm.h"
36 #include "hubp.h"
37 #include "dchubbub.h"
38 #include "timing_generator.h"
39 #include "opp.h"
40 #include "ipp.h"
41 #include "mpc.h"
42 #include "mcif_wb.h"
43 #include "dc_dmub_srv.h"
44 #include "dcn31_hwseq.h"
45 #include "link_hwss.h"
46 #include "dpcd_defs.h"
47 #include "dce/dmub_outbox.h"
48 #include "dc_link_dp.h"
49 #include "inc/link_dpcd.h"
50 
51 #define DC_LOGGER_INIT(logger)
52 
53 #define CTX \
54 	hws->ctx
55 #define REG(reg)\
56 	hws->regs->reg
57 #define DC_LOGGER \
58 		dc->ctx->logger
59 
60 
61 #undef FN
62 #define FN(reg_name, field_name) \
63 	hws->shifts->field_name, hws->masks->field_name
64 
65 void dcn31_init_hw(struct dc *dc)
66 {
67 	struct abm **abms = dc->res_pool->multiple_abms;
68 	struct dce_hwseq *hws = dc->hwseq;
69 	struct dc_bios *dcb = dc->ctx->dc_bios;
70 	struct resource_pool *res_pool = dc->res_pool;
71 	uint32_t backlight = MAX_BACKLIGHT_LEVEL;
72 	int i, j;
73 	int edp_num;
74 
75 	if (dc->clk_mgr && dc->clk_mgr->funcs->init_clocks)
76 		dc->clk_mgr->funcs->init_clocks(dc->clk_mgr);
77 
78 	// Initialize the dccg
79 	if (res_pool->dccg->funcs->dccg_init)
80 		res_pool->dccg->funcs->dccg_init(res_pool->dccg);
81 
82 	if (IS_FPGA_MAXIMUS_DC(dc->ctx->dce_environment)) {
83 
84 		REG_WRITE(REFCLK_CNTL, 0);
85 		REG_UPDATE(DCHUBBUB_GLOBAL_TIMER_CNTL, DCHUBBUB_GLOBAL_TIMER_ENABLE, 1);
86 		REG_WRITE(DIO_MEM_PWR_CTRL, 0);
87 
88 		if (!dc->debug.disable_clock_gate) {
89 			/* enable all DCN clock gating */
90 			REG_WRITE(DCCG_GATE_DISABLE_CNTL, 0);
91 
92 			REG_WRITE(DCCG_GATE_DISABLE_CNTL2, 0);
93 
94 			REG_UPDATE(DCFCLK_CNTL, DCFCLK_GATE_DIS, 0);
95 		}
96 
97 		//Enable ability to power gate / don't force power on permanently
98 		if (hws->funcs.enable_power_gating_plane)
99 			hws->funcs.enable_power_gating_plane(hws, true);
100 
101 		return;
102 	}
103 
104 	if (!dcb->funcs->is_accelerated_mode(dcb)) {
105 		hws->funcs.bios_golden_init(dc);
106 		hws->funcs.disable_vga(dc->hwseq);
107 	}
108 
109 	if (dc->debug.enable_mem_low_power.bits.dmcu) {
110 		// Force ERAM to shutdown if DMCU is not enabled
111 		if (dc->debug.disable_dmcu || dc->config.disable_dmcu) {
112 			REG_UPDATE(DMU_MEM_PWR_CNTL, DMCU_ERAM_MEM_PWR_FORCE, 3);
113 		}
114 	}
115 
116 	// Set default OPTC memory power states
117 	if (dc->debug.enable_mem_low_power.bits.optc) {
118 		// Shutdown when unassigned and light sleep in VBLANK
119 		REG_SET_2(ODM_MEM_PWR_CTRL3, 0, ODM_MEM_UNASSIGNED_PWR_MODE, 3, ODM_MEM_VBLANK_PWR_MODE, 1);
120 	}
121 
122 	if (dc->debug.enable_mem_low_power.bits.vga) {
123 		// Power down VGA memory
124 		REG_UPDATE(MMHUBBUB_MEM_PWR_CNTL, VGA_MEM_PWR_FORCE, 1);
125 	}
126 
127 	if (dc->ctx->dc_bios->fw_info_valid) {
128 		res_pool->ref_clocks.xtalin_clock_inKhz =
129 				dc->ctx->dc_bios->fw_info.pll_info.crystal_frequency;
130 
131 		if (!IS_FPGA_MAXIMUS_DC(dc->ctx->dce_environment)) {
132 			if (res_pool->dccg && res_pool->hubbub) {
133 
134 				(res_pool->dccg->funcs->get_dccg_ref_freq)(res_pool->dccg,
135 						dc->ctx->dc_bios->fw_info.pll_info.crystal_frequency,
136 						&res_pool->ref_clocks.dccg_ref_clock_inKhz);
137 
138 				(res_pool->hubbub->funcs->get_dchub_ref_freq)(res_pool->hubbub,
139 						res_pool->ref_clocks.dccg_ref_clock_inKhz,
140 						&res_pool->ref_clocks.dchub_ref_clock_inKhz);
141 			} else {
142 				// Not all ASICs have DCCG sw component
143 				res_pool->ref_clocks.dccg_ref_clock_inKhz =
144 						res_pool->ref_clocks.xtalin_clock_inKhz;
145 				res_pool->ref_clocks.dchub_ref_clock_inKhz =
146 						res_pool->ref_clocks.xtalin_clock_inKhz;
147 			}
148 		}
149 	} else
150 		ASSERT_CRITICAL(false);
151 
152 	for (i = 0; i < dc->link_count; i++) {
153 		/* Power up AND update implementation according to the
154 		 * required signal (which may be different from the
155 		 * default signal on connector).
156 		 */
157 		struct dc_link *link = dc->links[i];
158 
159 		link->link_enc->funcs->hw_init(link->link_enc);
160 
161 		/* Check for enabled DIG to identify enabled display */
162 		if (link->link_enc->funcs->is_dig_enabled &&
163 			link->link_enc->funcs->is_dig_enabled(link->link_enc))
164 			link->link_status.link_active = true;
165 	}
166 
167 	/* Power gate DSCs */
168 	for (i = 0; i < res_pool->res_cap->num_dsc; i++)
169 		if (hws->funcs.dsc_pg_control != NULL)
170 			hws->funcs.dsc_pg_control(hws, res_pool->dscs[i]->inst, false);
171 
172 	/* we want to turn off all dp displays before doing detection */
173 	if (dc->config.power_down_display_on_boot) {
174 		uint8_t dpcd_power_state = '\0';
175 		enum dc_status status = DC_ERROR_UNEXPECTED;
176 
177 		for (i = 0; i < dc->link_count; i++) {
178 			if (dc->links[i]->connector_signal != SIGNAL_TYPE_DISPLAY_PORT)
179 				continue;
180 
181 			/* if any of the displays are lit up turn them off */
182 			status = core_link_read_dpcd(dc->links[i], DP_SET_POWER,
183 						     &dpcd_power_state, sizeof(dpcd_power_state));
184 			if (status == DC_OK && dpcd_power_state == DP_POWER_STATE_D0) {
185 				/* blank dp stream before power off receiver*/
186 				if (dc->links[i]->link_enc->funcs->get_dig_frontend) {
187 					unsigned int fe;
188 
189 					fe = dc->links[i]->link_enc->funcs->get_dig_frontend(
190 										dc->links[i]->link_enc);
191 					if (fe == ENGINE_ID_UNKNOWN)
192 						continue;
193 
194 					for (j = 0; j < dc->res_pool->stream_enc_count; j++) {
195 						if (fe == dc->res_pool->stream_enc[j]->id) {
196 							dc->res_pool->stream_enc[j]->funcs->dp_blank(
197 										dc->res_pool->stream_enc[j]);
198 							break;
199 						}
200 					}
201 				}
202 				dp_receiver_power_ctrl(dc->links[i], false);
203 			}
204 		}
205 	}
206 
207 	/* If taking control over from VBIOS, we may want to optimize our first
208 	 * mode set, so we need to skip powering down pipes until we know which
209 	 * pipes we want to use.
210 	 * Otherwise, if taking control is not possible, we need to power
211 	 * everything down.
212 	 */
213 	if (dcb->funcs->is_accelerated_mode(dcb) || dc->config.power_down_display_on_boot) {
214 		hws->funcs.init_pipes(dc, dc->current_state);
215 		if (dc->res_pool->hubbub->funcs->allow_self_refresh_control)
216 			dc->res_pool->hubbub->funcs->allow_self_refresh_control(dc->res_pool->hubbub,
217 					!dc->res_pool->hubbub->ctx->dc->debug.disable_stutter);
218 	}
219 
220 	/* In headless boot cases, DIG may be turned
221 	 * on which causes HW/SW discrepancies.
222 	 * To avoid this, power down hardware on boot
223 	 * if DIG is turned on and seamless boot not enabled
224 	 */
225 	if (dc->config.power_down_display_on_boot) {
226 		struct dc_link *edp_links[MAX_NUM_EDP];
227 		struct dc_link *edp_link;
228 
229 		get_edp_links(dc, edp_links, &edp_num);
230 		if (edp_num) {
231 			for (i = 0; i < edp_num; i++) {
232 				edp_link = edp_links[i];
233 				if (edp_link->link_enc->funcs->is_dig_enabled &&
234 						edp_link->link_enc->funcs->is_dig_enabled(edp_link->link_enc) &&
235 						dc->hwss.edp_backlight_control &&
236 						dc->hwss.power_down &&
237 						dc->hwss.edp_power_control) {
238 					dc->hwss.edp_backlight_control(edp_link, false);
239 					dc->hwss.power_down(dc);
240 					dc->hwss.edp_power_control(edp_link, false);
241 				}
242 			}
243 		} else {
244 			for (i = 0; i < dc->link_count; i++) {
245 				struct dc_link *link = dc->links[i];
246 
247 				if (link->link_enc->funcs->is_dig_enabled &&
248 						link->link_enc->funcs->is_dig_enabled(link->link_enc) &&
249 						dc->hwss.power_down) {
250 					dc->hwss.power_down(dc);
251 					break;
252 				}
253 
254 			}
255 		}
256 	}
257 
258 	for (i = 0; i < res_pool->audio_count; i++) {
259 		struct audio *audio = res_pool->audios[i];
260 
261 		audio->funcs->hw_init(audio);
262 	}
263 
264 	for (i = 0; i < dc->link_count; i++) {
265 		struct dc_link *link = dc->links[i];
266 
267 		if (link->panel_cntl)
268 			backlight = link->panel_cntl->funcs->hw_init(link->panel_cntl);
269 	}
270 
271 	for (i = 0; i < dc->res_pool->pipe_count; i++) {
272 		if (abms[i] != NULL)
273 			abms[i]->funcs->abm_init(abms[i], backlight);
274 	}
275 
276 	/* power AFMT HDMI memory TODO: may move to dis/en output save power*/
277 	REG_WRITE(DIO_MEM_PWR_CTRL, 0);
278 
279 	if (!dc->debug.disable_clock_gate) {
280 		/* enable all DCN clock gating */
281 		REG_WRITE(DCCG_GATE_DISABLE_CNTL, 0);
282 
283 		REG_WRITE(DCCG_GATE_DISABLE_CNTL2, 0);
284 
285 		REG_UPDATE(DCFCLK_CNTL, DCFCLK_GATE_DIS, 0);
286 	}
287 	if (hws->funcs.enable_power_gating_plane)
288 		hws->funcs.enable_power_gating_plane(dc->hwseq, true);
289 
290 	if (!dcb->funcs->is_accelerated_mode(dcb) && dc->res_pool->hubbub->funcs->init_watermarks)
291 		dc->res_pool->hubbub->funcs->init_watermarks(dc->res_pool->hubbub);
292 
293 	if (dc->clk_mgr->funcs->notify_wm_ranges)
294 		dc->clk_mgr->funcs->notify_wm_ranges(dc->clk_mgr);
295 
296 	if (dc->clk_mgr->funcs->set_hard_max_memclk)
297 		dc->clk_mgr->funcs->set_hard_max_memclk(dc->clk_mgr);
298 
299 	if (dc->res_pool->hubbub->funcs->force_pstate_change_control)
300 		dc->res_pool->hubbub->funcs->force_pstate_change_control(
301 				dc->res_pool->hubbub, false, false);
302 	if (dc->res_pool->hubbub->funcs->init_crb)
303 		dc->res_pool->hubbub->funcs->init_crb(dc->res_pool->hubbub);
304 }
305 
306 void dcn31_dsc_pg_control(
307 		struct dce_hwseq *hws,
308 		unsigned int dsc_inst,
309 		bool power_on)
310 {
311 	uint32_t power_gate = power_on ? 0 : 1;
312 	uint32_t pwr_status = power_on ? 0 : 2;
313 	uint32_t org_ip_request_cntl = 0;
314 
315 	if (hws->ctx->dc->debug.disable_dsc_power_gate)
316 		return;
317 
318 	REG_GET(DC_IP_REQUEST_CNTL, IP_REQUEST_EN, &org_ip_request_cntl);
319 	if (org_ip_request_cntl == 0)
320 		REG_SET(DC_IP_REQUEST_CNTL, 0, IP_REQUEST_EN, 1);
321 
322 	switch (dsc_inst) {
323 	case 0: /* DSC0 */
324 		REG_UPDATE(DOMAIN16_PG_CONFIG,
325 				DOMAIN_POWER_GATE, power_gate);
326 
327 		REG_WAIT(DOMAIN16_PG_STATUS,
328 				DOMAIN_PGFSM_PWR_STATUS, pwr_status,
329 				1, 1000);
330 		break;
331 	case 1: /* DSC1 */
332 		REG_UPDATE(DOMAIN17_PG_CONFIG,
333 				DOMAIN_POWER_GATE, power_gate);
334 
335 		REG_WAIT(DOMAIN17_PG_STATUS,
336 				DOMAIN_PGFSM_PWR_STATUS, pwr_status,
337 				1, 1000);
338 		break;
339 	case 2: /* DSC2 */
340 		REG_UPDATE(DOMAIN18_PG_CONFIG,
341 				DOMAIN_POWER_GATE, power_gate);
342 
343 		REG_WAIT(DOMAIN18_PG_STATUS,
344 				DOMAIN_PGFSM_PWR_STATUS, pwr_status,
345 				1, 1000);
346 		break;
347 	default:
348 		BREAK_TO_DEBUGGER();
349 		break;
350 	}
351 
352 	if (org_ip_request_cntl == 0)
353 		REG_SET(DC_IP_REQUEST_CNTL, 0, IP_REQUEST_EN, 0);
354 }
355 
356 
357 void dcn31_enable_power_gating_plane(
358 	struct dce_hwseq *hws,
359 	bool enable)
360 {
361 	bool force_on = true; /* disable power gating */
362 
363 	if (enable)
364 		force_on = false;
365 
366 	/* DCHUBP0/1/2/3/4/5 */
367 	REG_UPDATE(DOMAIN0_PG_CONFIG, DOMAIN_POWER_FORCEON, force_on);
368 	REG_UPDATE(DOMAIN2_PG_CONFIG, DOMAIN_POWER_FORCEON, force_on);
369 
370 	/* DPP0/1/2/3/4/5 */
371 	REG_UPDATE(DOMAIN1_PG_CONFIG, DOMAIN_POWER_FORCEON, force_on);
372 	REG_UPDATE(DOMAIN3_PG_CONFIG, DOMAIN_POWER_FORCEON, force_on);
373 
374 	/* DCS0/1/2/3/4/5 */
375 	REG_UPDATE(DOMAIN16_PG_CONFIG, DOMAIN_POWER_FORCEON, force_on);
376 	REG_UPDATE(DOMAIN17_PG_CONFIG, DOMAIN_POWER_FORCEON, force_on);
377 	REG_UPDATE(DOMAIN18_PG_CONFIG, DOMAIN_POWER_FORCEON, force_on);
378 }
379 
380 void dcn31_update_info_frame(struct pipe_ctx *pipe_ctx)
381 {
382 	bool is_hdmi_tmds;
383 	bool is_dp;
384 
385 	ASSERT(pipe_ctx->stream);
386 
387 	if (pipe_ctx->stream_res.stream_enc == NULL)
388 		return;  /* this is not root pipe */
389 
390 	is_hdmi_tmds = dc_is_hdmi_tmds_signal(pipe_ctx->stream->signal);
391 	is_dp = dc_is_dp_signal(pipe_ctx->stream->signal);
392 
393 	if (!is_hdmi_tmds)
394 		return;
395 
396 	if (is_hdmi_tmds)
397 		pipe_ctx->stream_res.stream_enc->funcs->update_hdmi_info_packets(
398 			pipe_ctx->stream_res.stream_enc,
399 			&pipe_ctx->stream_res.encoder_info_frame);
400 	else {
401 		pipe_ctx->stream_res.stream_enc->funcs->update_dp_info_packets(
402 			pipe_ctx->stream_res.stream_enc,
403 			&pipe_ctx->stream_res.encoder_info_frame);
404 	}
405 }
406 
407 void dcn31_z10_restore(struct dc *dc)
408 {
409 	union dmub_rb_cmd cmd;
410 
411 	/*
412 	 * DMUB notifies whether restore is required.
413 	 * Optimization to avoid sending commands when not required.
414 	 */
415 	if (!dc_dmub_srv_is_restore_required(dc->ctx->dmub_srv))
416 		return;
417 
418 	memset(&cmd, 0, sizeof(cmd));
419 	cmd.dcn_restore.header.type = DMUB_CMD__IDLE_OPT;
420 	cmd.dcn_restore.header.sub_type = DMUB_CMD__IDLE_OPT_DCN_RESTORE;
421 
422 	dc_dmub_srv_cmd_queue(dc->ctx->dmub_srv, &cmd);
423 	dc_dmub_srv_cmd_execute(dc->ctx->dmub_srv);
424 	dc_dmub_srv_wait_idle(dc->ctx->dmub_srv);
425 }
426 
427 void dcn31_hubp_pg_control(struct dce_hwseq *hws, unsigned int hubp_inst, bool power_on)
428 {
429 	uint32_t power_gate = power_on ? 0 : 1;
430 	uint32_t pwr_status = power_on ? 0 : 2;
431 
432 	if (hws->ctx->dc->debug.disable_hubp_power_gate)
433 		return;
434 
435 	if (REG(DOMAIN0_PG_CONFIG) == 0)
436 		return;
437 
438 	switch (hubp_inst) {
439 	case 0:
440 		REG_SET(DOMAIN0_PG_CONFIG, 0, DOMAIN_POWER_GATE, power_gate);
441 		REG_WAIT(DOMAIN0_PG_STATUS, DOMAIN_PGFSM_PWR_STATUS, pwr_status, 1, 1000);
442 		break;
443 	case 1:
444 		REG_SET(DOMAIN1_PG_CONFIG, 0, DOMAIN_POWER_GATE, power_gate);
445 		REG_WAIT(DOMAIN1_PG_STATUS, DOMAIN_PGFSM_PWR_STATUS, pwr_status, 1, 1000);
446 		break;
447 	case 2:
448 		REG_SET(DOMAIN2_PG_CONFIG, 0, DOMAIN_POWER_GATE, power_gate);
449 		REG_WAIT(DOMAIN2_PG_STATUS, DOMAIN_PGFSM_PWR_STATUS, pwr_status, 1, 1000);
450 		break;
451 	case 3:
452 		REG_SET(DOMAIN3_PG_CONFIG, 0, DOMAIN_POWER_GATE, power_gate);
453 		REG_WAIT(DOMAIN3_PG_STATUS, DOMAIN_PGFSM_PWR_STATUS, pwr_status, 1, 1000);
454 		break;
455 	default:
456 		BREAK_TO_DEBUGGER();
457 		break;
458 	}
459 }
460 
461 int dcn31_init_sys_ctx(struct dce_hwseq *hws, struct dc *dc, struct dc_phy_addr_space_config *pa_config)
462 {
463 	struct dcn_hubbub_phys_addr_config config;
464 
465 	config.system_aperture.fb_top = pa_config->system_aperture.fb_top;
466 	config.system_aperture.fb_offset = pa_config->system_aperture.fb_offset;
467 	config.system_aperture.fb_base = pa_config->system_aperture.fb_base;
468 	config.system_aperture.agp_top = pa_config->system_aperture.agp_top;
469 	config.system_aperture.agp_bot = pa_config->system_aperture.agp_bot;
470 	config.system_aperture.agp_base = pa_config->system_aperture.agp_base;
471 	config.gart_config.page_table_start_addr = pa_config->gart_config.page_table_start_addr;
472 	config.gart_config.page_table_end_addr = pa_config->gart_config.page_table_end_addr;
473 
474 	if (pa_config->gart_config.base_addr_is_mc_addr) {
475 		/* Convert from MC address to offset into FB */
476 		config.gart_config.page_table_base_addr = pa_config->gart_config.page_table_base_addr -
477 				pa_config->system_aperture.fb_base +
478 				pa_config->system_aperture.fb_offset;
479 	} else
480 		config.gart_config.page_table_base_addr = pa_config->gart_config.page_table_base_addr;
481 
482 	return dc->res_pool->hubbub->funcs->init_dchub_sys_ctx(dc->res_pool->hubbub, &config);
483 }
484 
485 static void dcn31_reset_back_end_for_pipe(
486 		struct dc *dc,
487 		struct pipe_ctx *pipe_ctx,
488 		struct dc_state *context)
489 {
490 	struct dc_link *link;
491 
492 	DC_LOGGER_INIT(dc->ctx->logger);
493 	if (pipe_ctx->stream_res.stream_enc == NULL) {
494 		pipe_ctx->stream = NULL;
495 		return;
496 	}
497 	ASSERT(!pipe_ctx->top_pipe);
498 
499 	dc->hwss.set_abm_immediate_disable(pipe_ctx);
500 
501 	pipe_ctx->stream_res.tg->funcs->set_dsc_config(
502 			pipe_ctx->stream_res.tg,
503 			OPTC_DSC_DISABLED, 0, 0);
504 	pipe_ctx->stream_res.tg->funcs->disable_crtc(pipe_ctx->stream_res.tg);
505 
506 	pipe_ctx->stream_res.tg->funcs->enable_optc_clock(pipe_ctx->stream_res.tg, false);
507 	if (pipe_ctx->stream_res.tg->funcs->set_odm_bypass)
508 		pipe_ctx->stream_res.tg->funcs->set_odm_bypass(
509 				pipe_ctx->stream_res.tg, &pipe_ctx->stream->timing);
510 
511 	if (pipe_ctx->stream_res.tg->funcs->set_drr)
512 		pipe_ctx->stream_res.tg->funcs->set_drr(
513 				pipe_ctx->stream_res.tg, NULL);
514 
515 	if (!IS_FPGA_MAXIMUS_DC(dc->ctx->dce_environment)) {
516 		link = pipe_ctx->stream->link;
517 		/* DPMS may already disable or */
518 		/* dpms_off status is incorrect due to fastboot
519 		 * feature. When system resume from S4 with second
520 		 * screen only, the dpms_off would be true but
521 		 * VBIOS lit up eDP, so check link status too.
522 		 */
523 		if (!pipe_ctx->stream->dpms_off || link->link_status.link_active)
524 			core_link_disable_stream(pipe_ctx);
525 		else if (pipe_ctx->stream_res.audio)
526 			dc->hwss.disable_audio_stream(pipe_ctx);
527 
528 		/* free acquired resources */
529 		if (pipe_ctx->stream_res.audio) {
530 			/*disable az_endpoint*/
531 			pipe_ctx->stream_res.audio->funcs->az_disable(pipe_ctx->stream_res.audio);
532 
533 			/*free audio*/
534 			if (dc->caps.dynamic_audio == true) {
535 				/*we have to dynamic arbitrate the audio endpoints*/
536 				/*we free the resource, need reset is_audio_acquired*/
537 				update_audio_usage(&dc->current_state->res_ctx, dc->res_pool,
538 						pipe_ctx->stream_res.audio, false);
539 				pipe_ctx->stream_res.audio = NULL;
540 			}
541 		}
542 	} else if (pipe_ctx->stream_res.dsc) {
543 			dp_set_dsc_enable(pipe_ctx, false);
544 	}
545 
546 	pipe_ctx->stream = NULL;
547 	DC_LOG_DEBUG("Reset back end for pipe %d, tg:%d\n",
548 					pipe_ctx->pipe_idx, pipe_ctx->stream_res.tg->inst);
549 }
550 
551 void dcn31_reset_hw_ctx_wrap(
552 		struct dc *dc,
553 		struct dc_state *context)
554 {
555 	int i;
556 	struct dce_hwseq *hws = dc->hwseq;
557 
558 	/* Reset Back End*/
559 	for (i = dc->res_pool->pipe_count - 1; i >= 0 ; i--) {
560 		struct pipe_ctx *pipe_ctx_old =
561 			&dc->current_state->res_ctx.pipe_ctx[i];
562 		struct pipe_ctx *pipe_ctx = &context->res_ctx.pipe_ctx[i];
563 
564 		if (!pipe_ctx_old->stream)
565 			continue;
566 
567 		if (pipe_ctx_old->top_pipe || pipe_ctx_old->prev_odm_pipe)
568 			continue;
569 
570 		if (!pipe_ctx->stream ||
571 				pipe_need_reprogram(pipe_ctx_old, pipe_ctx)) {
572 			struct clock_source *old_clk = pipe_ctx_old->clock_source;
573 
574 			dcn31_reset_back_end_for_pipe(dc, pipe_ctx_old, dc->current_state);
575 			if (hws->funcs.enable_stream_gating)
576 				hws->funcs.enable_stream_gating(dc, pipe_ctx);
577 			if (old_clk)
578 				old_clk->funcs->cs_power_down(old_clk);
579 		}
580 	}
581 }
582 
583 bool dcn31_is_abm_supported(struct dc *dc,
584 		struct dc_state *context, struct dc_stream_state *stream)
585 {
586 	int i;
587 
588 	for (i = 0; i < dc->res_pool->pipe_count; i++) {
589 		struct pipe_ctx *pipe_ctx = &context->res_ctx.pipe_ctx[i];
590 
591 		if (pipe_ctx->stream == stream &&
592 				(pipe_ctx->prev_odm_pipe == NULL && pipe_ctx->next_odm_pipe == NULL))
593 			return true;
594 	}
595 	return false;
596 }
597