drm/amd/display: Refactor for setup periodic interrupt.

[Why]
Current periodic interrupt start point calc in optc
is not clear.

[How]
1. DM convert delta time to lines number and dc will calculate the
   start position as per lines number and interrupt type.
2. hwss calculates the start point as per line offset.
3. optc programs vertical interrupts register as per start point
   and interrupt source.

Signed-off-by: Yongqiang Sun <yongqiang.sun@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Leo Li <sunpeng.li@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

1 files changed, 17 insertions, 7 deletions

diff --git a/drivers/gpu/drm/amd/display/dc/dc_stream.h b/drivers/gpu/drm/amd/display/dc/dc_stream.h
index a798694992b9..5657cb3a2ad3 100644
--- a/drivers/gpu/drm/amd/display/dc/dc_stream.h
+++ b/drivers/gpu/drm/amd/display/dc/dc_stream.h
@@ -51,9 +51,19 @@ struct freesync_context {
 	bool dummy;
 };
 
-union vline_config {
-	unsigned int line_number;
-	unsigned long long delta_in_ns;
+enum vertical_interrupt_ref_point {
+	START_V_UPDATE = 0,
+	START_V_SYNC,
+	INVALID_POINT
+
+	//For now, only v_update interrupt is used.
+	//START_V_BLANK,
+	//START_V_ACTIVE
+};
+
+struct periodic_interrupt_config {
+	enum vertical_interrupt_ref_point ref_point;
+	int lines_offset;
 };
 
 
@@ -106,8 +116,8 @@ struct dc_stream_state {
 	/* DMCU info */
 	unsigned int abm_level;
 
-	union vline_config periodic_vsync_config;
-	union vline_config enhanced_sync_config;
+	struct periodic_interrupt_config periodic_interrupt0;
+	struct periodic_interrupt_config periodic_interrupt1;
 
 	/* from core_stream struct */
 	struct dc_context *ctx;
@@ -158,8 +168,8 @@ struct dc_stream_update {
 	struct dc_info_packet *hdr_static_metadata;
 	unsigned int *abm_level;
 
-	union vline_config *periodic_vsync_config;
-	union vline_config *enhanced_sync_config;
+	struct periodic_interrupt_config *periodic_interrupt0;
+	struct periodic_interrupt_config *periodic_interrupt1;
 
 	struct dc_crtc_timing_adjust *adjust;
 	struct dc_info_packet *vrr_infopacket;