[PATCH 07/18] drm/amd/display: Notify display idle on D3

[IVAN.LIPSKI at amd.com]

From: Duncan Ma <Duncan.Ma at amd.com>

[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 at amd.com>
Signed-off-by: Duncan Ma <Duncan.Ma at amd.com>
Signed-off-by: Ivan Lipski <ivan.lipski at amd.com>
---
 drivers/gpu/drm/amd/display/dc/core/dc.c | 9 +++++++++
 drivers/gpu/drm/amd/display/dc/dc.h      | 1 +
 2 files changed, 10 insertions(+)

diff --git a/drivers/gpu/drm/amd/display/dc/core/dc.c b/drivers/gpu/drm/amd/display/dc/core/dc.c
index cee45fe7cec9..c31f7f8e409f 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc.c
@@ -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);
diff --git a/drivers/gpu/drm/amd/display/dc/dc.h b/drivers/gpu/drm/amd/display/dc/dc.h
index a160671d2a01..aa1b976cf40d 100644
--- a/drivers/gpu/drm/amd/display/dc/dc.h
+++ b/drivers/gpu/drm/amd/display/dc/dc.h
@@ -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;
-- 
2.43.0