drm/radeon: add new atombios encoder/transmitter interfaces

These allow overriding the encoder id with the frontend,
we need this for setting up MST.
Signed-off-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/radeon/atombios_encoders.c

@@ -823,7 +823,7 @@ union dig_encoder_control {
 };
 
 void
-atombios_dig_encoder_setup(struct drm_encoder *encoder, int action, int panel_mode)
+atombios_dig_encoder_setup2(struct drm_encoder *encoder, int action, int panel_mode, int enc_override)
 {
 	struct drm_device *dev = encoder->dev;
 	struct radeon_device *rdev = dev->dev_private;
@@ -920,6 +920,9 @@ atombios_dig_encoder_setup(struct drm_encoder *encoder, int action, int panel_mo
 
 			if (ENCODER_MODE_IS_DP(args.v3.ucEncoderMode) && (dp_clock == 270000))
 				args.v1.ucConfig |= ATOM_ENCODER_CONFIG_V3_DPLINKRATE_2_70GHZ;
+			if (enc_override != -1)
+				args.v3.acConfig.ucDigSel = enc_override;
+			else
 				args.v3.acConfig.ucDigSel = dig->dig_encoder;
 			args.v3.ucBitPerColor = radeon_atom_get_bpc(encoder);
 			break;
@@ -948,6 +951,10 @@ atombios_dig_encoder_setup(struct drm_encoder *encoder, int action, int panel_mo
 				else
 					args.v1.ucConfig |= ATOM_ENCODER_CONFIG_V4_DPLINKRATE_1_62GHZ;
 			}
+
+			if (enc_override != -1)
+				args.v4.acConfig.ucDigSel = enc_override;
+			else
 				args.v4.acConfig.ucDigSel = dig->dig_encoder;
 			args.v4.ucBitPerColor = radeon_atom_get_bpc(encoder);
 			if (hpd_id == RADEON_HPD_NONE)
@@ -969,6 +976,12 @@ atombios_dig_encoder_setup(struct drm_encoder *encoder, int action, int panel_mo
 
 }
 
+void
+atombios_dig_encoder_setup(struct drm_encoder *encoder, int action, int panel_mode)
+{
+	atombios_dig_encoder_setup2(encoder, action, panel_mode, -1);
+}
+
 union dig_transmitter_control {
 	DIG_TRANSMITTER_CONTROL_PS_ALLOCATION v1;
 	DIG_TRANSMITTER_CONTROL_PARAMETERS_V2 v2;
@@ -978,7 +991,7 @@ union dig_transmitter_control {
 };
 
 void
-atombios_dig_transmitter_setup(struct drm_encoder *encoder, int action, uint8_t lane_num, uint8_t lane_set)
+atombios_dig_transmitter_setup2(struct drm_encoder *encoder, int action, uint8_t lane_num, uint8_t lane_set, int fe)
 {
 	struct drm_device *dev = encoder->dev;
 	struct radeon_device *rdev = dev->dev_private;
@@ -1328,7 +1341,7 @@ atombios_dig_transmitter_setup(struct drm_encoder *encoder, int action, uint8_t
 				args.v5.asConfig.ucHPDSel = 0;
 			else
 				args.v5.asConfig.ucHPDSel = hpd_id + 1;
-			args.v5.ucDigEncoderSel = 1 << dig_encoder;
+			args.v5.ucDigEncoderSel = (fe != -1) ? (1 << fe) : (1 << dig_encoder);
 			args.v5.ucDPLaneSet = lane_set;
 			break;
 		default:
@@ -1344,6 +1357,12 @@ atombios_dig_transmitter_setup(struct drm_encoder *encoder, int action, uint8_t
 	atom_execute_table(rdev->mode_info.atom_context, index, (uint32_t *)&args);
 }
 
+void
+atombios_dig_transmitter_setup(struct drm_encoder *encoder, int action, uint8_t lane_num, uint8_t lane_set)
+{
+	atombios_dig_transmitter_setup2(encoder, action, lane_num, lane_set, -1);
+}
+
 bool
 atombios_set_edp_panel_power(struct drm_connector *connector, int action)
 {

drivers/gpu/drm/radeon/radeon_mode.h

@@ -726,11 +726,15 @@ extern ssize_t
 radeon_dp_aux_transfer_native(struct drm_dp_aux *aux, struct drm_dp_aux_msg *msg);
 
 extern void atombios_dig_encoder_setup(struct drm_encoder *encoder, int action, int panel_mode);
+extern void atombios_dig_encoder_setup2(struct drm_encoder *encoder, int action, int panel_mode, int enc_override);
 extern void radeon_atom_encoder_init(struct radeon_device *rdev);
 extern void radeon_atom_disp_eng_pll_init(struct radeon_device *rdev);
 extern void atombios_dig_transmitter_setup(struct drm_encoder *encoder,
 					   int action, uint8_t lane_num,
 					   uint8_t lane_set);
+extern void atombios_dig_transmitter_setup2(struct drm_encoder *encoder,
+					    int action, uint8_t lane_num,
+					    uint8_t lane_set, int fe);
 extern void radeon_atom_ext_encoder_setup_ddc(struct drm_encoder *encoder);
 extern struct drm_encoder *radeon_get_external_encoder(struct drm_encoder *encoder);
 void radeon_atom_copy_swap(u8 *dst, u8 *src, u8 num_bytes, bool to_le);