Commit 2ee27baf authored Mar 31, 2025 by Duncan Ma Committed by Alex Deucher Jul 15, 2025

drm/amd/display: Notify display idle on D3



[Why & How]
Display idle notification shall
be sent by driver on D3 entry. Implement
notification to DMUB and PMFW.

Reviewed-by: Duncan Ma <duncan.ma@amd.com>
Signed-off-by: Duncan Ma <Duncan.Ma@amd.com>
Signed-off-by: Ivan Lipski <ivan.lipski@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

parent f354556e

drivers/gpu/drm/amd/display/dc/core/dc.c

+9 −0

Original line number	Diff line number	Diff line
		@@ -5547,6 +5547,15 @@ void dc_set_power_state(struct dc *dc, enum dc_acpi_cm_power_state power_state)
		dc->hwss.init_sys_ctx(dc->hwseq, dc, &dc->vm_pa_config);
		}
		break;
		case DC_ACPI_CM_POWER_STATE_D3:
		if (dc->caps.ips_support)
		dc_dmub_srv_notify_fw_dc_power_state(dc->ctx->dmub_srv, DC_ACPI_CM_POWER_STATE_D3);

		if (dc->caps.ips_v2_support) {
		if (dc->clk_mgr->funcs->set_low_power_state)
		dc->clk_mgr->funcs->set_low_power_state(dc->clk_mgr);
		}
		break;
		default:
		ASSERT(dc->current_state->stream_count == 0);
		dc_dmub_srv_notify_fw_dc_power_state(dc->ctx->dmub_srv, power_state);

drivers/gpu/drm/amd/display/dc/dc.h

+1 −0

Original line number	Diff line number	Diff line
		@@ -311,6 +311,7 @@ struct dc_caps {
		bool dmcub_support;
		bool zstate_support;
		bool ips_support;
		bool ips_v2_support;
		uint32_t num_of_internal_disp;
		enum dp_protocol_version max_dp_protocol_version;
		unsigned int mall_size_per_mem_channel;