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 #include "dcn10/dcn10_hw_sequencer.h"
51 
52 #define DC_LOGGER_INIT(logger)
53 
54 #define CTX \
55 	hws->ctx
56 #define REG(reg)\
57 	hws->regs->reg
58 #define DC_LOGGER \
59 		dc->ctx->logger
60 
61 
62 #undef FN
63 #define FN(reg_name, field_name) \
64 	hws->shifts->field_name, hws->masks->field_name
65 
66 void dcn31_init_hw(struct dc *dc)
67 {
68 	struct abm **abms = dc->res_pool->multiple_abms;
69 	struct dce_hwseq *hws = dc->hwseq;
70 	struct dc_bios *dcb = dc->ctx->dc_bios;
71 	struct resource_pool *res_pool = dc->res_pool;
72 	uint32_t backlight = MAX_BACKLIGHT_LEVEL;
73 	int i, j;
74 	int edp_num;
75 
76 	if (dc->clk_mgr && dc->clk_mgr->funcs->init_clocks)
77 		dc->clk_mgr->funcs->init_clocks(dc->clk_mgr);
78 
79 	// Initialize the dccg
80 	if (res_pool->dccg->funcs->dccg_init)
81 		res_pool->dccg->funcs->dccg_init(res_pool->dccg);
82 
83 	if (IS_FPGA_MAXIMUS_DC(dc->ctx->dce_environment)) {
84 
85 		REG_WRITE(REFCLK_CNTL, 0);
86 		REG_UPDATE(DCHUBBUB_GLOBAL_TIMER_CNTL, DCHUBBUB_GLOBAL_TIMER_ENABLE, 1);
87 		REG_WRITE(DIO_MEM_PWR_CTRL, 0);
88 
89 		if (!dc->debug.disable_clock_gate) {
90 			/* enable all DCN clock gating */
91 			REG_WRITE(DCCG_GATE_DISABLE_CNTL, 0);
92 
93 			REG_WRITE(DCCG_GATE_DISABLE_CNTL2, 0);
94 
95 			REG_UPDATE(DCFCLK_CNTL, DCFCLK_GATE_DIS, 0);
96 		}
97 
98 		//Enable ability to power gate / don't force power on permanently
99 		if (hws->funcs.enable_power_gating_plane)
100 			hws->funcs.enable_power_gating_plane(hws, true);
101 
102 		return;
103 	}
104 
105 	if (!dcb->funcs->is_accelerated_mode(dcb)) {
106 		hws->funcs.bios_golden_init(dc);
107 		hws->funcs.disable_vga(dc->hwseq);
108 	}
109 
110 	if (dc->debug.enable_mem_low_power.bits.dmcu) {
111 		// Force ERAM to shutdown if DMCU is not enabled
112 		if (dc->debug.disable_dmcu || dc->config.disable_dmcu) {
113 			REG_UPDATE(DMU_MEM_PWR_CNTL, DMCU_ERAM_MEM_PWR_FORCE, 3);
114 		}
115 	}
116 
117 	// Set default OPTC memory power states
118 	if (dc->debug.enable_mem_low_power.bits.optc) {
119 		// Shutdown when unassigned and light sleep in VBLANK
120 		REG_SET_2(ODM_MEM_PWR_CTRL3, 0, ODM_MEM_UNASSIGNED_PWR_MODE, 3, ODM_MEM_VBLANK_PWR_MODE, 1);
121 	}
122 
123 	if (dc->debug.enable_mem_low_power.bits.vga) {
124 		// Power down VGA memory
125 		REG_UPDATE(MMHUBBUB_MEM_PWR_CNTL, VGA_MEM_PWR_FORCE, 1);
126 	}
127 
128 	if (dc->ctx->dc_bios->fw_info_valid) {
129 		res_pool->ref_clocks.xtalin_clock_inKhz =
130 				dc->ctx->dc_bios->fw_info.pll_info.crystal_frequency;
131 
132 		if (!IS_FPGA_MAXIMUS_DC(dc->ctx->dce_environment)) {
133 			if (res_pool->dccg && res_pool->hubbub) {
134 
135 				(res_pool->dccg->funcs->get_dccg_ref_freq)(res_pool->dccg,
136 						dc->ctx->dc_bios->fw_info.pll_info.crystal_frequency,
137 						&res_pool->ref_clocks.dccg_ref_clock_inKhz);
138 
139 				(res_pool->hubbub->funcs->get_dchub_ref_freq)(res_pool->hubbub,
140 						res_pool->ref_clocks.dccg_ref_clock_inKhz,
141 						&res_pool->ref_clocks.dchub_ref_clock_inKhz);
142 			} else {
143 				// Not all ASICs have DCCG sw component
144 				res_pool->ref_clocks.dccg_ref_clock_inKhz =
145 						res_pool->ref_clocks.xtalin_clock_inKhz;
146 				res_pool->ref_clocks.dchub_ref_clock_inKhz =
147 						res_pool->ref_clocks.xtalin_clock_inKhz;
148 			}
149 		}
150 	} else
151 		ASSERT_CRITICAL(false);
152 
153 	for (i = 0; i < dc->link_count; i++) {
154 		/* Power up AND update implementation according to the
155 		 * required signal (which may be different from the
156 		 * default signal on connector).
157 		 */
158 		struct dc_link *link = dc->links[i];
159 
160 		link->link_enc->funcs->hw_init(link->link_enc);
161 
162 		/* Check for enabled DIG to identify enabled display */
163 		if (link->link_enc->funcs->is_dig_enabled &&
164 			link->link_enc->funcs->is_dig_enabled(link->link_enc))
165 			link->link_status.link_active = true;
166 	}
167 
168 	/* Power gate DSCs */
169 	for (i = 0; i < res_pool->res_cap->num_dsc; i++)
170 		if (hws->funcs.dsc_pg_control != NULL)
171 			hws->funcs.dsc_pg_control(hws, res_pool->dscs[i]->inst, false);
172 
173 	/* we want to turn off all dp displays before doing detection */
174 	if (dc->config.power_down_display_on_boot) {
175 		uint8_t dpcd_power_state = '\0';
176 		enum dc_status status = DC_ERROR_UNEXPECTED;
177 
178 		for (i = 0; i < dc->link_count; i++) {
179 			if (dc->links[i]->connector_signal != SIGNAL_TYPE_DISPLAY_PORT)
180 				continue;
181 
182 			/* if any of the displays are lit up turn them off */
183 			status = core_link_read_dpcd(dc->links[i], DP_SET_POWER,
184 						     &dpcd_power_state, sizeof(dpcd_power_state));
185 			if (status == DC_OK && dpcd_power_state == DP_POWER_STATE_D0) {
186 				/* blank dp stream before power off receiver*/
187 				if (dc->links[i]->link_enc->funcs->get_dig_frontend) {
188 					unsigned int fe;
189 
190 					fe = dc->links[i]->link_enc->funcs->get_dig_frontend(
191 										dc->links[i]->link_enc);
192 					if (fe == ENGINE_ID_UNKNOWN)
193 						continue;
194 
195 					for (j = 0; j < dc->res_pool->stream_enc_count; j++) {
196 						if (fe == dc->res_pool->stream_enc[j]->id) {
197 							dc->res_pool->stream_enc[j]->funcs->dp_blank(
198 										dc->res_pool->stream_enc[j]);
199 							break;
200 						}
201 					}
202 				}
203 				dp_receiver_power_ctrl(dc->links[i], false);
204 			}
205 		}
206 	}
207 
208 	/* If taking control over from VBIOS, we may want to optimize our first
209 	 * mode set, so we need to skip powering down pipes until we know which
210 	 * pipes we want to use.
211 	 * Otherwise, if taking control is not possible, we need to power
212 	 * everything down.
213 	 */
214 	if (dcb->funcs->is_accelerated_mode(dcb) || dc->config.power_down_display_on_boot) {
215 		hws->funcs.init_pipes(dc, dc->current_state);
216 		if (dc->res_pool->hubbub->funcs->allow_self_refresh_control)
217 			dc->res_pool->hubbub->funcs->allow_self_refresh_control(dc->res_pool->hubbub,
218 					!dc->res_pool->hubbub->ctx->dc->debug.disable_stutter);
219 	}
220 
221 	/* In headless boot cases, DIG may be turned
222 	 * on which causes HW/SW discrepancies.
223 	 * To avoid this, power down hardware on boot
224 	 * if DIG is turned on and seamless boot not enabled
225 	 */
226 	if (dc->config.power_down_display_on_boot) {
227 		struct dc_link *edp_links[MAX_NUM_EDP];
228 		struct dc_link *edp_link;
229 		bool power_down = false;
230 
231 		get_edp_links(dc, edp_links, &edp_num);
232 		if (edp_num) {
233 			for (i = 0; i < edp_num; i++) {
234 				edp_link = edp_links[i];
235 				if (edp_link->link_enc->funcs->is_dig_enabled &&
236 						edp_link->link_enc->funcs->is_dig_enabled(edp_link->link_enc) &&
237 						dc->hwss.edp_backlight_control &&
238 						dc->hwss.power_down &&
239 						dc->hwss.edp_power_control) {
240 					dc->hwss.edp_backlight_control(edp_link, false);
241 					dc->hwss.power_down(dc);
242 					dc->hwss.edp_power_control(edp_link, false);
243 					power_down = true;
244 				}
245 			}
246 		}
247 		if (!power_down) {
248 			for (i = 0; i < dc->link_count; i++) {
249 				struct dc_link *link = dc->links[i];
250 
251 				if (link->link_enc->funcs->is_dig_enabled &&
252 						link->link_enc->funcs->is_dig_enabled(link->link_enc) &&
253 						dc->hwss.power_down) {
254 					dc->hwss.power_down(dc);
255 					break;
256 				}
257 
258 			}
259 		}
260 	}
261 
262 	for (i = 0; i < res_pool->audio_count; i++) {
263 		struct audio *audio = res_pool->audios[i];
264 
265 		audio->funcs->hw_init(audio);
266 	}
267 
268 	for (i = 0; i < dc->link_count; i++) {
269 		struct dc_link *link = dc->links[i];
270 
271 		if (link->panel_cntl)
272 			backlight = link->panel_cntl->funcs->hw_init(link->panel_cntl);
273 	}
274 
275 	for (i = 0; i < dc->res_pool->pipe_count; i++) {
276 		if (abms[i] != NULL)
277 			abms[i]->funcs->abm_init(abms[i], backlight);
278 	}
279 
280 	/* power AFMT HDMI memory TODO: may move to dis/en output save power*/
281 	REG_WRITE(DIO_MEM_PWR_CTRL, 0);
282 
283 	if (!dc->debug.disable_clock_gate) {
284 		/* enable all DCN clock gating */
285 		REG_WRITE(DCCG_GATE_DISABLE_CNTL, 0);
286 
287 		REG_WRITE(DCCG_GATE_DISABLE_CNTL2, 0);
288 
289 		REG_UPDATE(DCFCLK_CNTL, DCFCLK_GATE_DIS, 0);
290 	}
291 	if (hws->funcs.enable_power_gating_plane)
292 		hws->funcs.enable_power_gating_plane(dc->hwseq, true);
293 
294 	if (!dcb->funcs->is_accelerated_mode(dcb) && dc->res_pool->hubbub->funcs->init_watermarks)
295 		dc->res_pool->hubbub->funcs->init_watermarks(dc->res_pool->hubbub);
296 
297 	if (dc->clk_mgr->funcs->notify_wm_ranges)
298 		dc->clk_mgr->funcs->notify_wm_ranges(dc->clk_mgr);
299 
300 	if (dc->clk_mgr->funcs->set_hard_max_memclk)
301 		dc->clk_mgr->funcs->set_hard_max_memclk(dc->clk_mgr);
302 
303 	if (dc->res_pool->hubbub->funcs->force_pstate_change_control)
304 		dc->res_pool->hubbub->funcs->force_pstate_change_control(
305 				dc->res_pool->hubbub, false, false);
306 	if (dc->res_pool->hubbub->funcs->init_crb)
307 		dc->res_pool->hubbub->funcs->init_crb(dc->res_pool->hubbub);
308 }
309 
310 void dcn31_dsc_pg_control(
311 		struct dce_hwseq *hws,
312 		unsigned int dsc_inst,
313 		bool power_on)
314 {
315 	uint32_t power_gate = power_on ? 0 : 1;
316 	uint32_t pwr_status = power_on ? 0 : 2;
317 	uint32_t org_ip_request_cntl = 0;
318 
319 	if (hws->ctx->dc->debug.disable_dsc_power_gate)
320 		return;
321 
322 	REG_GET(DC_IP_REQUEST_CNTL, IP_REQUEST_EN, &org_ip_request_cntl);
323 	if (org_ip_request_cntl == 0)
324 		REG_SET(DC_IP_REQUEST_CNTL, 0, IP_REQUEST_EN, 1);
325 
326 	switch (dsc_inst) {
327 	case 0: /* DSC0 */
328 		REG_UPDATE(DOMAIN16_PG_CONFIG,
329 				DOMAIN_POWER_GATE, power_gate);
330 
331 		REG_WAIT(DOMAIN16_PG_STATUS,
332 				DOMAIN_PGFSM_PWR_STATUS, pwr_status,
333 				1, 1000);
334 		break;
335 	case 1: /* DSC1 */
336 		REG_UPDATE(DOMAIN17_PG_CONFIG,
337 				DOMAIN_POWER_GATE, power_gate);
338 
339 		REG_WAIT(DOMAIN17_PG_STATUS,
340 				DOMAIN_PGFSM_PWR_STATUS, pwr_status,
341 				1, 1000);
342 		break;
343 	case 2: /* DSC2 */
344 		REG_UPDATE(DOMAIN18_PG_CONFIG,
345 				DOMAIN_POWER_GATE, power_gate);
346 
347 		REG_WAIT(DOMAIN18_PG_STATUS,
348 				DOMAIN_PGFSM_PWR_STATUS, pwr_status,
349 				1, 1000);
350 		break;
351 	default:
352 		BREAK_TO_DEBUGGER();
353 		break;
354 	}
355 
356 	if (org_ip_request_cntl == 0)
357 		REG_SET(DC_IP_REQUEST_CNTL, 0, IP_REQUEST_EN, 0);
358 }
359 
360 
361 void dcn31_enable_power_gating_plane(
362 	struct dce_hwseq *hws,
363 	bool enable)
364 {
365 	bool force_on = true; /* disable power gating */
366 
367 	if (enable)
368 		force_on = false;
369 
370 	/* DCHUBP0/1/2/3/4/5 */
371 	REG_UPDATE(DOMAIN0_PG_CONFIG, DOMAIN_POWER_FORCEON, force_on);
372 	REG_UPDATE(DOMAIN2_PG_CONFIG, DOMAIN_POWER_FORCEON, force_on);
373 
374 	/* DPP0/1/2/3/4/5 */
375 	REG_UPDATE(DOMAIN1_PG_CONFIG, DOMAIN_POWER_FORCEON, force_on);
376 	REG_UPDATE(DOMAIN3_PG_CONFIG, DOMAIN_POWER_FORCEON, force_on);
377 
378 	/* DCS0/1/2/3/4/5 */
379 	REG_UPDATE(DOMAIN16_PG_CONFIG, DOMAIN_POWER_FORCEON, force_on);
380 	REG_UPDATE(DOMAIN17_PG_CONFIG, DOMAIN_POWER_FORCEON, force_on);
381 	REG_UPDATE(DOMAIN18_PG_CONFIG, DOMAIN_POWER_FORCEON, force_on);
382 }
383 
384 void dcn31_update_info_frame(struct pipe_ctx *pipe_ctx)
385 {
386 	bool is_hdmi_tmds;
387 	bool is_dp;
388 
389 	ASSERT(pipe_ctx->stream);
390 
391 	if (pipe_ctx->stream_res.stream_enc == NULL)
392 		return;  /* this is not root pipe */
393 
394 	is_hdmi_tmds = dc_is_hdmi_tmds_signal(pipe_ctx->stream->signal);
395 	is_dp = dc_is_dp_signal(pipe_ctx->stream->signal);
396 
397 	if (!is_hdmi_tmds && !is_dp)
398 		return;
399 
400 	if (is_hdmi_tmds)
401 		pipe_ctx->stream_res.stream_enc->funcs->update_hdmi_info_packets(
402 			pipe_ctx->stream_res.stream_enc,
403 			&pipe_ctx->stream_res.encoder_info_frame);
404 	else {
405 		pipe_ctx->stream_res.stream_enc->funcs->update_dp_info_packets(
406 			pipe_ctx->stream_res.stream_enc,
407 			&pipe_ctx->stream_res.encoder_info_frame);
408 	}
409 }
410 void dcn31_z10_save_init(struct dc *dc)
411 {
412 	union dmub_rb_cmd cmd;
413 
414 	memset(&cmd, 0, sizeof(cmd));
415 	cmd.dcn_restore.header.type = DMUB_CMD__IDLE_OPT;
416 	cmd.dcn_restore.header.sub_type = DMUB_CMD__IDLE_OPT_DCN_SAVE_INIT;
417 
418 	dc_dmub_srv_cmd_queue(dc->ctx->dmub_srv, &cmd);
419 	dc_dmub_srv_cmd_execute(dc->ctx->dmub_srv);
420 	dc_dmub_srv_wait_idle(dc->ctx->dmub_srv);
421 }
422 
423 void dcn31_z10_restore(struct dc *dc)
424 {
425 	union dmub_rb_cmd cmd;
426 
427 	/*
428 	 * DMUB notifies whether restore is required.
429 	 * Optimization to avoid sending commands when not required.
430 	 */
431 	if (!dc_dmub_srv_is_restore_required(dc->ctx->dmub_srv))
432 		return;
433 
434 	memset(&cmd, 0, sizeof(cmd));
435 	cmd.dcn_restore.header.type = DMUB_CMD__IDLE_OPT;
436 	cmd.dcn_restore.header.sub_type = DMUB_CMD__IDLE_OPT_DCN_RESTORE;
437 
438 	dc_dmub_srv_cmd_queue(dc->ctx->dmub_srv, &cmd);
439 	dc_dmub_srv_cmd_execute(dc->ctx->dmub_srv);
440 	dc_dmub_srv_wait_idle(dc->ctx->dmub_srv);
441 }
442 
443 void dcn31_hubp_pg_control(struct dce_hwseq *hws, unsigned int hubp_inst, bool power_on)
444 {
445 	uint32_t power_gate = power_on ? 0 : 1;
446 	uint32_t pwr_status = power_on ? 0 : 2;
447 
448 	if (hws->ctx->dc->debug.disable_hubp_power_gate)
449 		return;
450 
451 	if (REG(DOMAIN0_PG_CONFIG) == 0)
452 		return;
453 
454 	switch (hubp_inst) {
455 	case 0:
456 		REG_SET(DOMAIN0_PG_CONFIG, 0, DOMAIN_POWER_GATE, power_gate);
457 		REG_WAIT(DOMAIN0_PG_STATUS, DOMAIN_PGFSM_PWR_STATUS, pwr_status, 1, 1000);
458 		break;
459 	case 1:
460 		REG_SET(DOMAIN1_PG_CONFIG, 0, DOMAIN_POWER_GATE, power_gate);
461 		REG_WAIT(DOMAIN1_PG_STATUS, DOMAIN_PGFSM_PWR_STATUS, pwr_status, 1, 1000);
462 		break;
463 	case 2:
464 		REG_SET(DOMAIN2_PG_CONFIG, 0, DOMAIN_POWER_GATE, power_gate);
465 		REG_WAIT(DOMAIN2_PG_STATUS, DOMAIN_PGFSM_PWR_STATUS, pwr_status, 1, 1000);
466 		break;
467 	case 3:
468 		REG_SET(DOMAIN3_PG_CONFIG, 0, DOMAIN_POWER_GATE, power_gate);
469 		REG_WAIT(DOMAIN3_PG_STATUS, DOMAIN_PGFSM_PWR_STATUS, pwr_status, 1, 1000);
470 		break;
471 	default:
472 		BREAK_TO_DEBUGGER();
473 		break;
474 	}
475 }
476 
477 int dcn31_init_sys_ctx(struct dce_hwseq *hws, struct dc *dc, struct dc_phy_addr_space_config *pa_config)
478 {
479 	struct dcn_hubbub_phys_addr_config config;
480 
481 	config.system_aperture.fb_top = pa_config->system_aperture.fb_top;
482 	config.system_aperture.fb_offset = pa_config->system_aperture.fb_offset;
483 	config.system_aperture.fb_base = pa_config->system_aperture.fb_base;
484 	config.system_aperture.agp_top = pa_config->system_aperture.agp_top;
485 	config.system_aperture.agp_bot = pa_config->system_aperture.agp_bot;
486 	config.system_aperture.agp_base = pa_config->system_aperture.agp_base;
487 	config.gart_config.page_table_start_addr = pa_config->gart_config.page_table_start_addr;
488 	config.gart_config.page_table_end_addr = pa_config->gart_config.page_table_end_addr;
489 
490 	if (pa_config->gart_config.base_addr_is_mc_addr) {
491 		/* Convert from MC address to offset into FB */
492 		config.gart_config.page_table_base_addr = pa_config->gart_config.page_table_base_addr -
493 				pa_config->system_aperture.fb_base +
494 				pa_config->system_aperture.fb_offset;
495 	} else
496 		config.gart_config.page_table_base_addr = pa_config->gart_config.page_table_base_addr;
497 
498 	return dc->res_pool->hubbub->funcs->init_dchub_sys_ctx(dc->res_pool->hubbub, &config);
499 }
500 
501 static void dcn31_reset_back_end_for_pipe(
502 		struct dc *dc,
503 		struct pipe_ctx *pipe_ctx,
504 		struct dc_state *context)
505 {
506 	struct dc_link *link;
507 
508 	DC_LOGGER_INIT(dc->ctx->logger);
509 	if (pipe_ctx->stream_res.stream_enc == NULL) {
510 		pipe_ctx->stream = NULL;
511 		return;
512 	}
513 	ASSERT(!pipe_ctx->top_pipe);
514 
515 	dc->hwss.set_abm_immediate_disable(pipe_ctx);
516 
517 	pipe_ctx->stream_res.tg->funcs->set_dsc_config(
518 			pipe_ctx->stream_res.tg,
519 			OPTC_DSC_DISABLED, 0, 0);
520 	pipe_ctx->stream_res.tg->funcs->disable_crtc(pipe_ctx->stream_res.tg);
521 
522 	pipe_ctx->stream_res.tg->funcs->enable_optc_clock(pipe_ctx->stream_res.tg, false);
523 	if (pipe_ctx->stream_res.tg->funcs->set_odm_bypass)
524 		pipe_ctx->stream_res.tg->funcs->set_odm_bypass(
525 				pipe_ctx->stream_res.tg, &pipe_ctx->stream->timing);
526 
527 	if (pipe_ctx->stream_res.tg->funcs->set_drr)
528 		pipe_ctx->stream_res.tg->funcs->set_drr(
529 				pipe_ctx->stream_res.tg, NULL);
530 
531 	if (!IS_FPGA_MAXIMUS_DC(dc->ctx->dce_environment)) {
532 		link = pipe_ctx->stream->link;
533 		/* DPMS may already disable or */
534 		/* dpms_off status is incorrect due to fastboot
535 		 * feature. When system resume from S4 with second
536 		 * screen only, the dpms_off would be true but
537 		 * VBIOS lit up eDP, so check link status too.
538 		 */
539 		if (!pipe_ctx->stream->dpms_off || link->link_status.link_active)
540 			core_link_disable_stream(pipe_ctx);
541 		else if (pipe_ctx->stream_res.audio)
542 			dc->hwss.disable_audio_stream(pipe_ctx);
543 
544 		/* free acquired resources */
545 		if (pipe_ctx->stream_res.audio) {
546 			/*disable az_endpoint*/
547 			pipe_ctx->stream_res.audio->funcs->az_disable(pipe_ctx->stream_res.audio);
548 
549 			/*free audio*/
550 			if (dc->caps.dynamic_audio == true) {
551 				/*we have to dynamic arbitrate the audio endpoints*/
552 				/*we free the resource, need reset is_audio_acquired*/
553 				update_audio_usage(&dc->current_state->res_ctx, dc->res_pool,
554 						pipe_ctx->stream_res.audio, false);
555 				pipe_ctx->stream_res.audio = NULL;
556 			}
557 		}
558 	} else if (pipe_ctx->stream_res.dsc) {
559 			dp_set_dsc_enable(pipe_ctx, false);
560 	}
561 
562 	pipe_ctx->stream = NULL;
563 	DC_LOG_DEBUG("Reset back end for pipe %d, tg:%d\n",
564 					pipe_ctx->pipe_idx, pipe_ctx->stream_res.tg->inst);
565 }
566 
567 void dcn31_reset_hw_ctx_wrap(
568 		struct dc *dc,
569 		struct dc_state *context)
570 {
571 	int i;
572 	struct dce_hwseq *hws = dc->hwseq;
573 
574 	/* Reset Back End*/
575 	for (i = dc->res_pool->pipe_count - 1; i >= 0 ; i--) {
576 		struct pipe_ctx *pipe_ctx_old =
577 			&dc->current_state->res_ctx.pipe_ctx[i];
578 		struct pipe_ctx *pipe_ctx = &context->res_ctx.pipe_ctx[i];
579 
580 		if (!pipe_ctx_old->stream)
581 			continue;
582 
583 		if (pipe_ctx_old->top_pipe || pipe_ctx_old->prev_odm_pipe)
584 			continue;
585 
586 		if (!pipe_ctx->stream ||
587 				pipe_need_reprogram(pipe_ctx_old, pipe_ctx)) {
588 			struct clock_source *old_clk = pipe_ctx_old->clock_source;
589 
590 			dcn31_reset_back_end_for_pipe(dc, pipe_ctx_old, dc->current_state);
591 			if (hws->funcs.enable_stream_gating)
592 				hws->funcs.enable_stream_gating(dc, pipe_ctx);
593 			if (old_clk)
594 				old_clk->funcs->cs_power_down(old_clk);
595 		}
596 	}
597 }
598 
599 bool dcn31_is_abm_supported(struct dc *dc,
600 		struct dc_state *context, struct dc_stream_state *stream)
601 {
602 	int i;
603 
604 	for (i = 0; i < dc->res_pool->pipe_count; i++) {
605 		struct pipe_ctx *pipe_ctx = &context->res_ctx.pipe_ctx[i];
606 
607 		if (pipe_ctx->stream == stream &&
608 				(pipe_ctx->prev_odm_pipe == NULL && pipe_ctx->next_odm_pipe == NULL))
609 			return true;
610 	}
611 	return false;
612 }
613