drm/amd/display: Program reg for vertical interrupt.

Signed-off-by: Yongqiang Sun <yongqiang.sun@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Harry Wentland <Harry.Wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/display/dc/dcn10/dcn10_timing_generator.c

@@ -118,6 +118,7 @@ static void tgn10_program_timing(
 	uint32_t start_point = 0;
 	uint32_t field_num = 0;
 	uint32_t h_div_2;
+	uint32_t vertial_line_start;
 
 	struct dcn10_timing_generator *tgn10 = DCN10TG_FROM_TG(tg);
 
@@ -212,6 +213,12 @@ static void tgn10_program_timing(
 			OTG_V_BLANK_START, asic_blank_start,
 			OTG_V_BLANK_END, asic_blank_end);
 
+	/* Use OTG_VERTICAL_INTERRUPT2 replace VUPDATE interrupt,
+	 * program the reg for interrupt postition.
+	 */
+	vertial_line_start = asic_blank_end - tg->dlg_otg_param.vstartup_start + 1;
+	REG_SET(OTG_VERTICAL_INTERRUPT2_POSITION, 0,
+			OTG_VERTICAL_INTERRUPT2_LINE_START, vertial_line_start);
 
 	/* v_sync polarity */
 	v_sync_polarity = patched_crtc_timing.flags.VSYNC_POSITIVE_POLARITY ?
@@ -289,6 +296,9 @@ static void tgn10_unblank_crtc(struct timing_generator *tg)
 {
 	struct dcn10_timing_generator *tgn10 = DCN10TG_FROM_TG(tg);
 
+	REG_UPDATE(OTG_DOUBLE_BUFFER_CONTROL,
+					OTG_BLANK_DATA_DOUBLE_BUFFER_EN, 1);
+
 	REG_UPDATE_2(OTG_BLANK_CONTROL,
 			OTG_BLANK_DATA_EN, 0,
 			OTG_BLANK_DE_MODE, 0);

drivers/gpu/drm/amd/display/dc/dcn10/dcn10_timing_generator.h

@@ -65,6 +65,7 @@
 	SRI(OTG_NOM_VERT_POSITION, OTG, inst),\
 	SRI(OTG_BLACK_COLOR, OTG, inst),\
 	SRI(OTG_CLOCK_CONTROL, OTG, inst),\
+	SRI(OTG_VERTICAL_INTERRUPT2_POSITION, OTG, inst),\
 	SRI(OPTC_INPUT_CLOCK_CONTROL, ODM, inst),\
 	SRI(OPTC_DATA_SOURCE_SELECT, ODM, inst),\
 	SRI(OPTC_INPUT_GLOBAL_CONTROL, ODM, inst),\
@@ -120,6 +121,7 @@ struct dcn_tg_registers {
 	uint32_t OTG_TEST_PATTERN_CONTROL;
 	uint32_t OTG_TEST_PATTERN_COLOR;
 	uint32_t OTG_CLOCK_CONTROL;
+	uint32_t OTG_VERTICAL_INTERRUPT2_POSITION;
 	uint32_t OPTC_INPUT_CLOCK_CONTROL;
 	uint32_t OPTC_DATA_SOURCE_SELECT;
 	uint32_t OPTC_INPUT_GLOBAL_CONTROL;
@@ -203,6 +205,7 @@ struct dcn_tg_registers {
 	SF(OTG0_OTG_CLOCK_CONTROL, OTG_CLOCK_EN, mask_sh),\
 	SF(OTG0_OTG_CLOCK_CONTROL, OTG_CLOCK_ON, mask_sh),\
 	SF(OTG0_OTG_CLOCK_CONTROL, OTG_CLOCK_GATE_DIS, mask_sh),\
+	SF(OTG0_OTG_VERTICAL_INTERRUPT2_POSITION, OTG_VERTICAL_INTERRUPT2_LINE_START, mask_sh),\
 	SF(ODM0_OPTC_INPUT_CLOCK_CONTROL, OPTC_INPUT_CLK_EN, mask_sh),\
 	SF(ODM0_OPTC_INPUT_CLOCK_CONTROL, OPTC_INPUT_CLK_ON, mask_sh),\
 	SF(ODM0_OPTC_INPUT_CLOCK_CONTROL, OPTC_INPUT_CLK_GATE_DIS, mask_sh),\
@@ -308,6 +311,7 @@ struct dcn_tg_registers {
 	type OTG_CLOCK_EN;\
 	type OTG_CLOCK_ON;\
 	type OTG_CLOCK_GATE_DIS;\
+	type OTG_VERTICAL_INTERRUPT2_LINE_START;\
 	type OPTC_INPUT_CLK_EN;\
 	type OPTC_INPUT_CLK_ON;\
 	type OPTC_INPUT_CLK_GATE_DIS;\