drm/amd/display: Fix dpstreamclk programming

[WHY]
Currently programming incorrect hpo inst as well as selecting incorrect source

[HOW]
Use hpo inst instead of otg inst to select dpstreamclk inst
Reviewed-by: Nicholas Kazlauskas <Nicholas.Kazlauskas@amd.com>
Acked-by: Alex Hung <alex.hung@amd.com>
Signed-off-by: Michael Strauss <michael.strauss@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/display/dc/dcn31/dcn31_dccg.c

@@ -158,9 +158,11 @@ static void dccg31_disable_dpstreamclk(struct dccg *dccg, int otg_inst)
 	}
 }
 
-void dccg31_set_dpstreamclk(struct dccg *dccg,
-			    enum streamclk_source src,
-			    int otg_inst)
+void dccg31_set_dpstreamclk(
+		struct dccg *dccg,
+		enum streamclk_source src,
+		int otg_inst,
+		int dp_hpo_inst)
 {
 	if (src == REFCLK)
 		dccg31_disable_dpstreamclk(dccg, otg_inst);

drivers/gpu/drm/amd/display/dc/dcn31/dcn31_dccg.h

@@ -161,11 +161,6 @@ struct dccg *dccg31_create(
 
 void dccg31_init(struct dccg *dccg);
 
-void dccg31_set_dpstreamclk(
-		struct dccg *dccg,
-		enum streamclk_source src,
-		int otg_inst);
-
 void dccg31_enable_symclk32_se(
 		struct dccg *dccg,
 		int hpo_se_inst,
@@ -207,7 +202,8 @@ void dccg31_get_dccg_ref_freq(
 void dccg31_set_dpstreamclk(
 	struct dccg *dccg,
 	enum streamclk_source src,
-	int otg_inst);
+	int otg_inst,
+	int dp_hpo_inst);
 
 void dccg31_set_dtbclk_dto(
 		struct dccg *dccg,

drivers/gpu/drm/amd/display/dc/dcn314/dcn314_dccg.c

@@ -184,7 +184,8 @@ void dccg314_set_dtbclk_dto(
 void dccg314_set_dpstreamclk(
 		struct dccg *dccg,
 		enum streamclk_source src,
-		int otg_inst)
+		int otg_inst,
+		int dp_hpo_inst)
 {
 	struct dcn_dccg *dccg_dcn = TO_DCN_DCCG(dccg);
 
@@ -192,26 +193,26 @@ void dccg314_set_dpstreamclk(
 	dccg314_set_dtbclk_p_src(dccg, src, otg_inst);
 
 	/* enabled to select one of the DTBCLKs for pipe */
-	switch (otg_inst) {
+	switch (dp_hpo_inst) {
 	case 0:
 		REG_UPDATE_2(DPSTREAMCLK_CNTL,
 					DPSTREAMCLK0_EN, (src == REFCLK) ? 0 : 1,
-					DPSTREAMCLK0_SRC_SEL, 0);
+					DPSTREAMCLK0_SRC_SEL, otg_inst);
 		break;
 	case 1:
 		REG_UPDATE_2(DPSTREAMCLK_CNTL,
 					DPSTREAMCLK1_EN, (src == REFCLK) ? 0 : 1,
-					DPSTREAMCLK1_SRC_SEL, 1);
+					DPSTREAMCLK1_SRC_SEL, otg_inst);
 		break;
 	case 2:
 		REG_UPDATE_2(DPSTREAMCLK_CNTL,
 					DPSTREAMCLK2_EN, (src == REFCLK) ? 0 : 1,
-					DPSTREAMCLK2_SRC_SEL, 2);
+					DPSTREAMCLK2_SRC_SEL, otg_inst);
 		break;
 	case 3:
 		REG_UPDATE_2(DPSTREAMCLK_CNTL,
 					DPSTREAMCLK3_EN, (src == REFCLK) ? 0 : 1,
-					DPSTREAMCLK3_SRC_SEL, 3);
+					DPSTREAMCLK3_SRC_SEL, otg_inst);
 		break;
 	default:
 		BREAK_TO_DEBUGGER();

drivers/gpu/drm/amd/display/dc/dcn32/dcn32_dccg.c

@@ -211,7 +211,8 @@ static void dccg32_get_dccg_ref_freq(struct dccg *dccg,
 void dccg32_set_dpstreamclk(
 		struct dccg *dccg,
 		enum streamclk_source src,
-		int otg_inst)
+		int otg_inst,
+		int dp_hpo_inst)
 {
 	struct dcn_dccg *dccg_dcn = TO_DCN_DCCG(dccg);
 

drivers/gpu/drm/amd/display/dc/inc/hw/dccg.h

@@ -101,7 +101,8 @@ struct dccg_funcs {
 	void (*set_dpstreamclk)(
 			struct dccg *dccg,
 			enum streamclk_source src,
-			int otg_inst);
+			int otg_inst,
+			int dp_hpo_inst);
 
 	void (*enable_symclk32_se)(
 			struct dccg *dccg,

drivers/gpu/drm/amd/display/dc/link/link_hwss_hpo_dp.c

@@ -116,7 +116,7 @@ static void setup_hpo_dp_stream_encoder(struct pipe_ctx *pipe_ctx)
 	dto_params.timing = &pipe_ctx->stream->timing;
 	dto_params.ref_dtbclk_khz = dc->clk_mgr->funcs->get_dtb_ref_clk_frequency(dc->clk_mgr);
 
-	dccg->funcs->set_dpstreamclk(dccg, DTBCLK0, tg->inst);
+	dccg->funcs->set_dpstreamclk(dccg, DTBCLK0, tg->inst, link_enc->inst);
 	dccg->funcs->enable_symclk32_se(dccg, stream_enc->inst, phyd32clk);
 	dccg->funcs->set_dtbclk_dto(dccg, &dto_params);
 	stream_enc->funcs->enable_stream(stream_enc);
@@ -137,7 +137,7 @@ static void reset_hpo_dp_stream_encoder(struct pipe_ctx *pipe_ctx)
 	stream_enc->funcs->disable(stream_enc);
 	dccg->funcs->set_dtbclk_dto(dccg, &dto_params);
 	dccg->funcs->disable_symclk32_se(dccg, stream_enc->inst);
-	dccg->funcs->set_dpstreamclk(dccg, REFCLK, tg->inst);
+	dccg->funcs->set_dpstreamclk(dccg, REFCLK, tg->inst,  pipe_ctx->link_res.hpo_dp_link_enc->inst);
 }
 
 static void setup_hpo_dp_stream_attribute(struct pipe_ctx *pipe_ctx)