drm/amd/display: Hook DCN2 into amdgpu_dm and expose as config (v2)

Enable DCN2 support in DM (Display Manager).

v2: fix spurious raven change (Alex)
Signed-off-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/display/Kconfig

@@ -16,6 +16,15 @@ config DRM_AMD_DC_DCN1_0
 	help
 	  RV family support for display engine
 
+config DRM_AMD_DC_DCN2_0
+	bool "DCN 2.0 family"
+	default y
+	depends on DRM_AMD_DC && X86
+	depends on DRM_AMD_DC_DCN1_0
+	help
+	    Choose this option if you want to have
+	    Navi support for display engine
+
 config DEBUG_KERNEL_DC
 	bool "Enable kgdb break in DC"
 	depends on DRM_AMD_DC

drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c

@@ -666,6 +666,7 @@ static int load_dmcu_fw(struct amdgpu_device *adev)
 	case CHIP_VEGA10:
 	case CHIP_VEGA12:
 	case CHIP_VEGA20:
+	case CHIP_NAVI10:
 		return 0;
 	case CHIP_RAVEN:
 		if (ASICREV_IS_PICASSO(adev->external_rev_id))
@@ -2210,6 +2211,9 @@ static int amdgpu_dm_initialize_drm_device(struct amdgpu_device *adev)
 		break;
 #if defined(CONFIG_DRM_AMD_DC_DCN1_0)
 	case CHIP_RAVEN:
+#if defined(CONFIG_DRM_AMD_DC_DCN2_0)
+	case CHIP_NAVI10:
+#endif
 		if (dcn10_register_irq_handlers(dm->adev)) {
 			DRM_ERROR("DM: Failed to initialize IRQ\n");
 			goto fail;
@@ -2362,6 +2366,13 @@ static int dm_early_init(void *handle)
 		adev->mode_info.num_hpd = 4;
 		adev->mode_info.num_dig = 4;
 		break;
+#endif
+#if defined(CONFIG_DRM_AMD_DC_DCN2_0)
+	case CHIP_NAVI10:
+		adev->mode_info.num_crtc = 6;
+		adev->mode_info.num_hpd = 6;
+		adev->mode_info.num_dig = 6;
+		break;
 #endif
 	default:
 		DRM_ERROR("Unsupported ASIC type: 0x%X\n", adev->asic_type);
@@ -2655,6 +2666,9 @@ fill_plane_buffer_attributes(struct amdgpu_device *adev,
 	if (adev->asic_type == CHIP_VEGA10 ||
 	    adev->asic_type == CHIP_VEGA12 ||
 	    adev->asic_type == CHIP_VEGA20 ||
+#if defined(CONFIG_DRM_AMD_DC_DCN2_0)
+	    adev->asic_type == CHIP_NAVI10 ||
+#endif
 	    adev->asic_type == CHIP_RAVEN) {
 		/* Fill GFX9 params */
 		tiling_info->gfx9.num_pipes =

drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_color.c

@@ -166,7 +166,7 @@ int amdgpu_dm_set_regamma_lut(struct dm_crtc_state *crtc)
 	 */
 	stream->out_transfer_func->type = TF_TYPE_DISTRIBUTED_POINTS;
 	ret = mod_color_calculate_regamma_params(stream->out_transfer_func,
-			gamma, true, adev->asic_type <= CHIP_RAVEN, NULL);
+			gamma, true, adev->asic_type <= CHIP_NAVI10, NULL);
 
 	if (gamma)
 		dc_gamma_release(&gamma);