drm/amd/display: Add DCN3.1 HWSEQ

Add DCN3.1 specific hardware sequence programming - extending off of
our existing DCN3/DCN2 support.

Extend stream hardware sequencing to include new DCCG programming.

Acked-by: Huang Rui <ray.huang@amd.com>
Signed-off-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

1 files changed, 598 insertions, 0 deletions

diff --git a/drivers/gpu/drm/amd/display/dc/dcn31/dcn31_hwseq.c b/drivers/gpu/drm/amd/display/dc/dcn31/dcn31_hwseq.c
new file mode 100644
index 000000000000..c0e544d7556f
--- /dev/null
+++ b/drivers/gpu/drm/amd/display/dc/dcn31/dcn31_hwseq.c
@@ -0,0 +1,598 @@
+/*
+ * Copyright 2016 Advanced Micro Devices, Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * Authors: AMD
+ *
+ */
+
+
+#include "dm_services.h"
+#include "dm_helpers.h"
+#include "core_types.h"
+#include "resource.h"
+#include "dccg.h"
+#include "dce/dce_hwseq.h"
+#include "clk_mgr.h"
+#include "reg_helper.h"
+#include "abm.h"
+#include "clk_mgr.h"
+#include "hubp.h"
+#include "dchubbub.h"
+#include "timing_generator.h"
+#include "opp.h"
+#include "ipp.h"
+#include "mpc.h"
+#include "mcif_wb.h"
+#include "dc_dmub_srv.h"
+#include "dcn31_hwseq.h"
+#include "link_hwss.h"
+#include "dpcd_defs.h"
+#include "dce/dmub_outbox.h"
+#include "dc_link_dp.h"
+
+#define DC_LOGGER_INIT(logger)
+
+#define CTX \
+	hws->ctx
+#define REG(reg)\
+	hws->regs->reg
+#define DC_LOGGER \
+		dc->ctx->logger
+
+
+#undef FN
+#define FN(reg_name, field_name) \
+	hws->shifts->field_name, hws->masks->field_name
+
+void dcn31_init_hw(struct dc *dc)
+{
+	struct abm **abms = dc->res_pool->multiple_abms;
+	struct dce_hwseq *hws = dc->hwseq;
+	struct dc_bios *dcb = dc->ctx->dc_bios;
+	struct resource_pool *res_pool = dc->res_pool;
+	uint32_t backlight = MAX_BACKLIGHT_LEVEL;
+	int i, j;
+	int edp_num;
+
+	if (dc->clk_mgr && dc->clk_mgr->funcs->init_clocks)
+		dc->clk_mgr->funcs->init_clocks(dc->clk_mgr);
+
+	// Initialize the dccg
+	if (res_pool->dccg->funcs->dccg_init)
+		res_pool->dccg->funcs->dccg_init(res_pool->dccg);
+
+	if (IS_FPGA_MAXIMUS_DC(dc->ctx->dce_environment)) {
+
+		REG_WRITE(REFCLK_CNTL, 0);
+		REG_UPDATE(DCHUBBUB_GLOBAL_TIMER_CNTL, DCHUBBUB_GLOBAL_TIMER_ENABLE, 1);
+		REG_WRITE(DIO_MEM_PWR_CTRL, 0);
+
+		if (!dc->debug.disable_clock_gate) {
+			/* enable all DCN clock gating */
+			REG_WRITE(DCCG_GATE_DISABLE_CNTL, 0);
+
+			REG_WRITE(DCCG_GATE_DISABLE_CNTL2, 0);
+
+			REG_UPDATE(DCFCLK_CNTL, DCFCLK_GATE_DIS, 0);
+		}
+
+		//Enable ability to power gate / don't force power on permanently
+		if (hws->funcs.enable_power_gating_plane)
+			hws->funcs.enable_power_gating_plane(hws, true);
+
+		return;
+	}
+
+	if (!dcb->funcs->is_accelerated_mode(dcb)) {
+		hws->funcs.bios_golden_init(dc);
+		hws->funcs.disable_vga(dc->hwseq);
+	}
+
+	if (dc->debug.enable_mem_low_power.bits.dmcu) {
+		// Force ERAM to shutdown if DMCU is not enabled
+		if (dc->debug.disable_dmcu || dc->config.disable_dmcu) {
+			REG_UPDATE(DMU_MEM_PWR_CNTL, DMCU_ERAM_MEM_PWR_FORCE, 3);
+		}
+	}
+
+	// Set default OPTC memory power states
+	if (dc->debug.enable_mem_low_power.bits.optc) {
+		// Shutdown when unassigned and light sleep in VBLANK
+		REG_SET_2(ODM_MEM_PWR_CTRL3, 0, ODM_MEM_UNASSIGNED_PWR_MODE, 3, ODM_MEM_VBLANK_PWR_MODE, 1);
+	}
+
+	if (dc->debug.enable_mem_low_power.bits.vga) {
+		// Power down VGA memory
+		REG_UPDATE(MMHUBBUB_MEM_PWR_CNTL, VGA_MEM_PWR_FORCE, 1);
+	}
+
+	if (dc->ctx->dc_bios->fw_info_valid) {
+		res_pool->ref_clocks.xtalin_clock_inKhz =
+				dc->ctx->dc_bios->fw_info.pll_info.crystal_frequency;
+
+		if (!IS_FPGA_MAXIMUS_DC(dc->ctx->dce_environment)) {
+			if (res_pool->dccg && res_pool->hubbub) {
+
+				(res_pool->dccg->funcs->get_dccg_ref_freq)(res_pool->dccg,
+						dc->ctx->dc_bios->fw_info.pll_info.crystal_frequency,
+						&res_pool->ref_clocks.dccg_ref_clock_inKhz);
+
+				(res_pool->hubbub->funcs->get_dchub_ref_freq)(res_pool->hubbub,
+						res_pool->ref_clocks.dccg_ref_clock_inKhz,
+						&res_pool->ref_clocks.dchub_ref_clock_inKhz);
+			} else {
+				// Not all ASICs have DCCG sw component
+				res_pool->ref_clocks.dccg_ref_clock_inKhz =
+						res_pool->ref_clocks.xtalin_clock_inKhz;
+				res_pool->ref_clocks.dchub_ref_clock_inKhz =
+						res_pool->ref_clocks.xtalin_clock_inKhz;
+			}
+		}
+	} else
+		ASSERT_CRITICAL(false);
+
+	for (i = 0; i < dc->link_count; i++) {
+		/* Power up AND update implementation according to the
+		 * required signal (which may be different from the
+		 * default signal on connector).
+		 */
+		struct dc_link *link = dc->links[i];
+
+		link->link_enc->funcs->hw_init(link->link_enc);
+
+		/* Check for enabled DIG to identify enabled display */
+		if (link->link_enc->funcs->is_dig_enabled &&
+			link->link_enc->funcs->is_dig_enabled(link->link_enc))
+			link->link_status.link_active = true;
+	}
+
+	/* Power gate DSCs */
+	for (i = 0; i < res_pool->res_cap->num_dsc; i++)
+		if (hws->funcs.dsc_pg_control != NULL)
+			hws->funcs.dsc_pg_control(hws, res_pool->dscs[i]->inst, false);
+
+	/* we want to turn off all dp displays before doing detection */
+	if (dc->config.power_down_display_on_boot) {
+		uint8_t dpcd_power_state = '\0';
+		enum dc_status status = DC_ERROR_UNEXPECTED;
+
+		for (i = 0; i < dc->link_count; i++) {
+			if (dc->links[i]->connector_signal != SIGNAL_TYPE_DISPLAY_PORT)
+				continue;
+
+			/* if any of the displays are lit up turn them off */
+			status = core_link_read_dpcd(dc->links[i], DP_SET_POWER,
+						     &dpcd_power_state, sizeof(dpcd_power_state));
+			if (status == DC_OK && dpcd_power_state == DP_POWER_STATE_D0) {
+				/* blank dp stream before power off receiver*/
+				if (dc->links[i]->link_enc->funcs->get_dig_frontend) {
+					unsigned int fe;
+
+					fe = dc->links[i]->link_enc->funcs->get_dig_frontend(
+										dc->links[i]->link_enc);
+					if (fe == ENGINE_ID_UNKNOWN)
+						continue;
+
+					for (j = 0; j < dc->res_pool->stream_enc_count; j++) {
+						if (fe == dc->res_pool->stream_enc[j]->id) {
+							dc->res_pool->stream_enc[j]->funcs->dp_blank(
+										dc->res_pool->stream_enc[j]);
+							break;
+						}
+					}
+				}
+				dp_receiver_power_ctrl(dc->links[i], false);
+			}
+		}
+	}
+
+	/* If taking control over from VBIOS, we may want to optimize our first
+	 * mode set, so we need to skip powering down pipes until we know which
+	 * pipes we want to use.
+	 * Otherwise, if taking control is not possible, we need to power
+	 * everything down.
+	 */
+	if (dcb->funcs->is_accelerated_mode(dcb) || dc->config.power_down_display_on_boot) {
+		hws->funcs.init_pipes(dc, dc->current_state);
+		if (dc->res_pool->hubbub->funcs->allow_self_refresh_control)
+			dc->res_pool->hubbub->funcs->allow_self_refresh_control(dc->res_pool->hubbub,
+					!dc->res_pool->hubbub->ctx->dc->debug.disable_stutter);
+	}
+
+	/* In headless boot cases, DIG may be turned
+	 * on which causes HW/SW discrepancies.
+	 * To avoid this, power down hardware on boot
+	 * if DIG is turned on and seamless boot not enabled
+	 */
+	if (dc->config.power_down_display_on_boot) {
+		struct dc_link *edp_links[MAX_NUM_EDP];
+		struct dc_link *edp_link;
+
+		get_edp_links(dc, edp_links, &edp_num);
+		if (edp_num) {
+			for (i = 0; i < edp_num; i++) {
+				edp_link = edp_links[i];
+				if (edp_link->link_enc->funcs->is_dig_enabled &&
+						edp_link->link_enc->funcs->is_dig_enabled(edp_link->link_enc) &&
+						dc->hwss.edp_backlight_control &&
+						dc->hwss.power_down &&
+						dc->hwss.edp_power_control) {
+					dc->hwss.edp_backlight_control(edp_link, false);
+					dc->hwss.power_down(dc);
+					dc->hwss.edp_power_control(edp_link, false);
+				}
+			}
+		} else {
+			for (i = 0; i < dc->link_count; i++) {
+				struct dc_link *link = dc->links[i];
+
+				if (link->link_enc->funcs->is_dig_enabled &&
+						link->link_enc->funcs->is_dig_enabled(link->link_enc) &&
+						dc->hwss.power_down) {
+					dc->hwss.power_down(dc);
+					break;
+				}
+
+			}
+		}
+	}
+
+	for (i = 0; i < res_pool->audio_count; i++) {
+		struct audio *audio = res_pool->audios[i];
+
+		audio->funcs->hw_init(audio);
+	}
+
+	for (i = 0; i < dc->link_count; i++) {
+		struct dc_link *link = dc->links[i];
+
+		if (link->panel_cntl)
+			backlight = link->panel_cntl->funcs->hw_init(link->panel_cntl);
+	}
+
+	for (i = 0; i < dc->res_pool->pipe_count; i++) {
+		if (abms[i] != NULL)
+			abms[i]->funcs->abm_init(abms[i], backlight);
+	}
+
+	/* power AFMT HDMI memory TODO: may move to dis/en output save power*/
+	REG_WRITE(DIO_MEM_PWR_CTRL, 0);
+
+	if (!dc->debug.disable_clock_gate) {
+		/* enable all DCN clock gating */
+		REG_WRITE(DCCG_GATE_DISABLE_CNTL, 0);
+
+		REG_WRITE(DCCG_GATE_DISABLE_CNTL2, 0);
+
+		REG_UPDATE(DCFCLK_CNTL, DCFCLK_GATE_DIS, 0);
+	}
+	if (hws->funcs.enable_power_gating_plane)
+		hws->funcs.enable_power_gating_plane(dc->hwseq, true);
+
+	if (!dcb->funcs->is_accelerated_mode(dcb) && dc->res_pool->hubbub->funcs->init_watermarks)
+		dc->res_pool->hubbub->funcs->init_watermarks(dc->res_pool->hubbub);
+
+	if (dc->clk_mgr->funcs->notify_wm_ranges)
+		dc->clk_mgr->funcs->notify_wm_ranges(dc->clk_mgr);
+
+	if (dc->clk_mgr->funcs->set_hard_max_memclk)
+		dc->clk_mgr->funcs->set_hard_max_memclk(dc->clk_mgr);
+
+	if (dc->res_pool->hubbub->funcs->force_pstate_change_control)
+		dc->res_pool->hubbub->funcs->force_pstate_change_control(
+				dc->res_pool->hubbub, false, false);
+#if defined(CONFIG_DRM_AMD_DC_DCN3_1)
+	if (dc->res_pool->hubbub->funcs->init_crb)
+		dc->res_pool->hubbub->funcs->init_crb(dc->res_pool->hubbub);
+#endif
+}
+
+void dcn31_dsc_pg_control(
+		struct dce_hwseq *hws,
+		unsigned int dsc_inst,
+		bool power_on)
+{
+	uint32_t power_gate = power_on ? 0 : 1;
+	uint32_t pwr_status = power_on ? 0 : 2;
+	uint32_t org_ip_request_cntl = 0;
+
+	if (hws->ctx->dc->debug.disable_dsc_power_gate)
+		return;
+
+	REG_GET(DC_IP_REQUEST_CNTL, IP_REQUEST_EN, &org_ip_request_cntl);
+	if (org_ip_request_cntl == 0)
+		REG_SET(DC_IP_REQUEST_CNTL, 0, IP_REQUEST_EN, 1);
+
+	switch (dsc_inst) {
+	case 0: /* DSC0 */
+		REG_UPDATE(DOMAIN16_PG_CONFIG,
+				DOMAIN_POWER_GATE, power_gate);
+
+		REG_WAIT(DOMAIN16_PG_STATUS,
+				DOMAIN_PGFSM_PWR_STATUS, pwr_status,
+				1, 1000);
+		break;
+	case 1: /* DSC1 */
+		REG_UPDATE(DOMAIN17_PG_CONFIG,
+				DOMAIN_POWER_GATE, power_gate);
+
+		REG_WAIT(DOMAIN17_PG_STATUS,
+				DOMAIN_PGFSM_PWR_STATUS, pwr_status,
+				1, 1000);
+		break;
+	case 2: /* DSC2 */
+		REG_UPDATE(DOMAIN18_PG_CONFIG,
+				DOMAIN_POWER_GATE, power_gate);
+
+		REG_WAIT(DOMAIN18_PG_STATUS,
+				DOMAIN_PGFSM_PWR_STATUS, pwr_status,
+				1, 1000);
+		break;
+	default:
+		BREAK_TO_DEBUGGER();
+		break;
+	}
+
+	if (org_ip_request_cntl == 0)
+		REG_SET(DC_IP_REQUEST_CNTL, 0, IP_REQUEST_EN, 0);
+}
+
+
+void dcn31_enable_power_gating_plane(
+	struct dce_hwseq *hws,
+	bool enable)
+{
+	bool force_on = true; /* disable power gating */
+
+	if (enable)
+		force_on = false;
+
+	/* DCHUBP0/1/2/3/4/5 */
+	REG_UPDATE(DOMAIN0_PG_CONFIG, DOMAIN_POWER_FORCEON, force_on);
+	REG_UPDATE(DOMAIN2_PG_CONFIG, DOMAIN_POWER_FORCEON, force_on);
+
+	/* DPP0/1/2/3/4/5 */
+	REG_UPDATE(DOMAIN1_PG_CONFIG, DOMAIN_POWER_FORCEON, force_on);
+	REG_UPDATE(DOMAIN3_PG_CONFIG, DOMAIN_POWER_FORCEON, force_on);
+
+	/* DCS0/1/2/3/4/5 */
+	REG_UPDATE(DOMAIN16_PG_CONFIG, DOMAIN_POWER_FORCEON, force_on);
+	REG_UPDATE(DOMAIN17_PG_CONFIG, DOMAIN_POWER_FORCEON, force_on);
+	REG_UPDATE(DOMAIN18_PG_CONFIG, DOMAIN_POWER_FORCEON, force_on);
+}
+
+void dcn31_update_info_frame(struct pipe_ctx *pipe_ctx)
+{
+	bool is_hdmi_tmds;
+	bool is_dp;
+
+	ASSERT(pipe_ctx->stream);
+
+	if (pipe_ctx->stream_res.stream_enc == NULL)
+		return;  /* this is not root pipe */
+
+	is_hdmi_tmds = dc_is_hdmi_tmds_signal(pipe_ctx->stream->signal);
+	is_dp = dc_is_dp_signal(pipe_ctx->stream->signal);
+
+	if (!is_hdmi_tmds)
+		return;
+
+	if (is_hdmi_tmds)
+		pipe_ctx->stream_res.stream_enc->funcs->update_hdmi_info_packets(
+			pipe_ctx->stream_res.stream_enc,
+			&pipe_ctx->stream_res.encoder_info_frame);
+	else {
+		pipe_ctx->stream_res.stream_enc->funcs->update_dp_info_packets(
+			pipe_ctx->stream_res.stream_enc,
+			&pipe_ctx->stream_res.encoder_info_frame);
+	}
+}
+
+void dcn31_z10_restore(struct dc *dc)
+{
+	union dmub_rb_cmd cmd;
+
+	/*
+	 * DMUB notifies whether restore is required.
+	 * Optimization to avoid sending commands when not required.
+	 */
+	if (!dc_dmub_srv_is_restore_required(dc->ctx->dmub_srv))
+		return;
+
+	memset(&cmd, 0, sizeof(cmd));
+	cmd.dcn_restore.header.type = DMUB_CMD__IDLE_OPT;
+	cmd.dcn_restore.header.sub_type = DMUB_CMD__IDLE_OPT_DCN_RESTORE;
+
+	dc_dmub_srv_cmd_queue(dc->ctx->dmub_srv, &cmd);
+	dc_dmub_srv_cmd_execute(dc->ctx->dmub_srv);
+	dc_dmub_srv_wait_idle(dc->ctx->dmub_srv);
+}
+
+void dcn31_hubp_pg_control(struct dce_hwseq *hws, unsigned int hubp_inst, bool power_on)
+{
+	uint32_t power_gate = power_on ? 0 : 1;
+	uint32_t pwr_status = power_on ? 0 : 2;
+
+	if (hws->ctx->dc->debug.disable_hubp_power_gate)
+		return;
+
+	if (REG(DOMAIN0_PG_CONFIG) == 0)
+		return;
+
+	switch (hubp_inst) {
+	case 0:
+		REG_SET(DOMAIN0_PG_CONFIG, 0, DOMAIN_POWER_GATE, power_gate);
+		REG_WAIT(DOMAIN0_PG_STATUS, DOMAIN_PGFSM_PWR_STATUS, pwr_status, 1, 1000);
+		break;
+	case 1:
+		REG_SET(DOMAIN1_PG_CONFIG, 0, DOMAIN_POWER_GATE, power_gate);
+		REG_WAIT(DOMAIN1_PG_STATUS, DOMAIN_PGFSM_PWR_STATUS, pwr_status, 1, 1000);
+		break;
+	case 2:
+		REG_SET(DOMAIN2_PG_CONFIG, 0, DOMAIN_POWER_GATE, power_gate);
+		REG_WAIT(DOMAIN2_PG_STATUS, DOMAIN_PGFSM_PWR_STATUS, pwr_status, 1, 1000);
+		break;
+	case 3:
+		REG_SET(DOMAIN3_PG_CONFIG, 0, DOMAIN_POWER_GATE, power_gate);
+		REG_WAIT(DOMAIN3_PG_STATUS, DOMAIN_PGFSM_PWR_STATUS, pwr_status, 1, 1000);
+		break;
+	default:
+		BREAK_TO_DEBUGGER();
+		break;
+	}
+}
+
+int dcn31_init_sys_ctx(struct dce_hwseq *hws, struct dc *dc, struct dc_phy_addr_space_config *pa_config)
+{
+	struct dcn_hubbub_phys_addr_config config;
+
+	config.system_aperture.fb_top = pa_config->system_aperture.fb_top;
+	config.system_aperture.fb_offset = pa_config->system_aperture.fb_offset;
+	config.system_aperture.fb_base = pa_config->system_aperture.fb_base;
+	config.system_aperture.agp_top = pa_config->system_aperture.agp_top;
+	config.system_aperture.agp_bot = pa_config->system_aperture.agp_bot;
+	config.system_aperture.agp_base = pa_config->system_aperture.agp_base;
+	config.gart_config.page_table_start_addr = pa_config->gart_config.page_table_start_addr;
+	config.gart_config.page_table_end_addr = pa_config->gart_config.page_table_end_addr;
+
+	if (pa_config->gart_config.base_addr_is_mc_addr) {
+		/* Convert from MC address to offset into FB */
+		config.gart_config.page_table_base_addr = pa_config->gart_config.page_table_base_addr -
+				pa_config->system_aperture.fb_base +
+				pa_config->system_aperture.fb_offset;
+	} else
+		config.gart_config.page_table_base_addr = pa_config->gart_config.page_table_base_addr;
+
+	return dc->res_pool->hubbub->funcs->init_dchub_sys_ctx(dc->res_pool->hubbub, &config);
+}
+
+static void dcn31_reset_back_end_for_pipe(
+		struct dc *dc,
+		struct pipe_ctx *pipe_ctx,
+		struct dc_state *context)
+{
+	struct dc_link *link;
+
+	DC_LOGGER_INIT(dc->ctx->logger);
+	if (pipe_ctx->stream_res.stream_enc == NULL) {
+		pipe_ctx->stream = NULL;
+		return;
+	}
+	ASSERT(!pipe_ctx->top_pipe);
+
+	dc->hwss.set_abm_immediate_disable(pipe_ctx);
+
+	pipe_ctx->stream_res.tg->funcs->set_dsc_config(
+			pipe_ctx->stream_res.tg,
+			OPTC_DSC_DISABLED, 0, 0);
+	pipe_ctx->stream_res.tg->funcs->disable_crtc(pipe_ctx->stream_res.tg);
+
+	pipe_ctx->stream_res.tg->funcs->enable_optc_clock(pipe_ctx->stream_res.tg, false);
+	if (pipe_ctx->stream_res.tg->funcs->set_odm_bypass)
+		pipe_ctx->stream_res.tg->funcs->set_odm_bypass(
+				pipe_ctx->stream_res.tg, &pipe_ctx->stream->timing);
+
+	if (pipe_ctx->stream_res.tg->funcs->set_drr)
+		pipe_ctx->stream_res.tg->funcs->set_drr(
+				pipe_ctx->stream_res.tg, NULL);
+
+	if (!IS_FPGA_MAXIMUS_DC(dc->ctx->dce_environment)) {
+		link = pipe_ctx->stream->link;
+		/* DPMS may already disable or */
+		/* dpms_off status is incorrect due to fastboot
+		 * feature. When system resume from S4 with second
+		 * screen only, the dpms_off would be true but
+		 * VBIOS lit up eDP, so check link status too.
+		 */
+		if (!pipe_ctx->stream->dpms_off || link->link_status.link_active)
+			core_link_disable_stream(pipe_ctx);
+		else if (pipe_ctx->stream_res.audio)
+			dc->hwss.disable_audio_stream(pipe_ctx);
+
+		/* free acquired resources */
+		if (pipe_ctx->stream_res.audio) {
+			/*disable az_endpoint*/
+			pipe_ctx->stream_res.audio->funcs->az_disable(pipe_ctx->stream_res.audio);
+
+			/*free audio*/
+			if (dc->caps.dynamic_audio == true) {
+				/*we have to dynamic arbitrate the audio endpoints*/
+				/*we free the resource, need reset is_audio_acquired*/
+				update_audio_usage(&dc->current_state->res_ctx, dc->res_pool,
+						pipe_ctx->stream_res.audio, false);
+				pipe_ctx->stream_res.audio = NULL;
+			}
+		}
+	} else if (pipe_ctx->stream_res.dsc) {
+			dp_set_dsc_enable(pipe_ctx, false);
+	}
+
+	pipe_ctx->stream = NULL;
+	DC_LOG_DEBUG("Reset back end for pipe %d, tg:%d\n",
+					pipe_ctx->pipe_idx, pipe_ctx->stream_res.tg->inst);
+}
+
+void dcn31_reset_hw_ctx_wrap(
+		struct dc *dc,
+		struct dc_state *context)
+{
+	int i;
+	struct dce_hwseq *hws = dc->hwseq;
+
+	/* Reset Back End*/
+	for (i = dc->res_pool->pipe_count - 1; i >= 0 ; i--) {
+		struct pipe_ctx *pipe_ctx_old =
+			&dc->current_state->res_ctx.pipe_ctx[i];
+		struct pipe_ctx *pipe_ctx = &context->res_ctx.pipe_ctx[i];
+
+		if (!pipe_ctx_old->stream)
+			continue;
+
+		if (pipe_ctx_old->top_pipe || pipe_ctx_old->prev_odm_pipe)
+			continue;
+
+		if (!pipe_ctx->stream ||
+				pipe_need_reprogram(pipe_ctx_old, pipe_ctx)) {
+			struct clock_source *old_clk = pipe_ctx_old->clock_source;
+
+			dcn31_reset_back_end_for_pipe(dc, pipe_ctx_old, dc->current_state);
+			if (hws->funcs.enable_stream_gating)
+				hws->funcs.enable_stream_gating(dc, pipe_ctx);
+			if (old_clk)
+				old_clk->funcs->cs_power_down(old_clk);
+		}
+	}
+}
+
+bool dcn31_is_abm_supported(struct dc *dc,
+		struct dc_state *context, struct dc_stream_state *stream)
+{
+	int i;
+
+	for (i = 0; i < dc->res_pool->pipe_count; i++) {
+		struct pipe_ctx *pipe_ctx = &context->res_ctx.pipe_ctx[i];
+
+		if (pipe_ctx->stream == stream &&
+				(pipe_ctx->prev_odm_pipe == NULL && pipe_ctx->next_odm_pipe == NULL))
+			return true;
+	}
+	return false;
+}