drm/amd/pm: populate Arcturus PCIE link state

Populate current link speed, width and clock domain frequency.
Signed-off-by: Evan Quan <evan.quan@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/pm/amdgpu_pm.c

@@ -2060,9 +2060,6 @@ static int default_attr_update(struct amdgpu_device *adev, struct amdgpu_device_
 	} else if (DEVICE_ATTR_IS(pp_dpm_fclk)) {
 		if (asic_type < CHIP_VEGA20)
 			*states = ATTR_STATE_UNSUPPORTED;
-	} else if (DEVICE_ATTR_IS(pp_dpm_pcie)) {
-		if (asic_type == CHIP_ARCTURUS)
-			*states = ATTR_STATE_UNSUPPORTED;
 	} else if (DEVICE_ATTR_IS(pp_od_clk_voltage)) {
 		*states = ATTR_STATE_UNSUPPORTED;
 		if ((is_support_sw_smu(adev) && adev->smu.od_enabled) ||

drivers/gpu/drm/amd/pm/swsmu/smu11/arcturus_ppt.c

@@ -717,6 +717,7 @@ static int arcturus_print_clk_levels(struct smu_context *smu,
 	struct smu_11_0_dpm_table *single_dpm_table;
 	struct smu_dpm_context *smu_dpm = &smu->smu_dpm;
 	struct smu_11_0_dpm_context *dpm_context = NULL;
+	uint32_t gen_speed, lane_width;
 
 	if (amdgpu_ras_intr_triggered())
 		return snprintf(buf, PAGE_SIZE, "unavailable\n");
@@ -820,6 +821,23 @@ static int arcturus_print_clk_levels(struct smu_context *smu,
 				now) ? "*" : ""));
 		break;
 
+	case SMU_PCIE:
+		gen_speed = smu_v11_0_get_current_pcie_link_speed_level(smu);
+		lane_width = smu_v11_0_get_current_pcie_link_width_level(smu);
+		size += sprintf(buf + size, "0: %s %s %dMhz *\n",
+				(gen_speed == 0) ? "2.5GT/s," :
+				(gen_speed == 1) ? "5.0GT/s," :
+				(gen_speed == 2) ? "8.0GT/s," :
+				(gen_speed == 3) ? "16.0GT/s," : "",
+				(lane_width == 1) ? "x1" :
+				(lane_width == 2) ? "x2" :
+				(lane_width == 3) ? "x4" :
+				(lane_width == 4) ? "x8" :
+				(lane_width == 5) ? "x12" :
+				(lane_width == 6) ? "x16" : "",
+				smu->smu_table.boot_values.lclk / 100);
+		break;
+
 	default:
 		break;
 	}