drm/amd/display: Enabling PSR on DCN30 on driver side

[Why]
PSR needs to be enabled on DCN30. This is the driver part of PSR
enablement.

Also disabled retired DMCU on driver side, since DMCU is
not supported on DCN30 anymore.

[How]
Add necessary changes to enable PSR on DCN30.
Signed-off-by: Zhan Liu <zhan.liu@amd.com>
Acked-by: Aurabindo Pillai <aurabindo.pillai@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/display/dc/dcn30/dcn30_resource.c

@@ -79,6 +79,7 @@
 
 #include "reg_helper.h"
 #include "dce/dmub_abm.h"
+#include "dce/dmub_psr.h"
 #include "dce/dce_aux.h"
 #include "dce/dce_i2c.h"
 
@@ -832,7 +833,7 @@ static const struct dc_plane_cap plane_cap = {
 };
 
 static const struct dc_debug_options debug_defaults_drv = {
-	.disable_dmcu = true,
+	.disable_dmcu = true, //No DMCU on DCN30
 	.force_abm_enable = false,
 	.timing_trace = false,
 	.clock_trace = true,
@@ -849,10 +850,11 @@ static const struct dc_debug_options debug_defaults_drv = {
 	.underflow_assert_delay_us = 0xFFFFFFFF,
 	.dwb_fi_phase = -1, // -1 = disable,
 	.dmub_command_table = true,
+	.disable_psr = false,
 };
 
 static const struct dc_debug_options debug_defaults_diags = {
-	.disable_dmcu = true,
+	.disable_dmcu = true, //No dmcu on DCN30
 	.force_abm_enable = false,
 	.timing_trace = true,
 	.clock_trace = true,
@@ -865,6 +867,7 @@ static const struct dc_debug_options debug_defaults_diags = {
 	.scl_reset_length10 = true,
 	.dwb_fi_phase = -1, // -1 = disable
 	.dmub_command_table = true,
+	.disable_psr = true,
 	.enable_tri_buf = true,
 };
 
@@ -1313,6 +1316,9 @@ static void dcn30_resource_destruct(struct dcn30_resource_pool *pool)
 			dce_abm_destroy(&pool->base.multiple_abms[i]);
 	}
 
+	if (pool->base.psr != NULL)
+		dmub_psr_destroy(&pool->base.psr);
+
 	if (pool->base.dccg != NULL)
 		dcn_dccg_destroy(&pool->base.dccg);
 }
@@ -2624,6 +2630,14 @@ static bool dcn30_resource_construct(
 		}
 	}
 	pool->base.timing_generator_count = i;
+	/* PSR */
+	pool->base.psr = dmub_psr_create(ctx);
+
+	if (pool->base.psr == NULL) {
+		dm_error("DC: failed to create PSR obj!\n");
+		BREAK_TO_DEBUGGER();
+		goto create_fail;
+	}
 
 	/* ABM */
 	for (i = 0; i < pool->base.res_cap->num_timing_generator; i++) {