drm/amd/display: Set Cursor Matrix to bypass instead of Input Plane

why:
When the cursor disappears/reappears on fullscreen video, there is a
short transitional period where the cursor's color matrix is using the
same format as the video plane. This sets the cursor to the wrong color
momentarily before the UI plane appears, correcting the color.

how:
Instead of defaulting to using the color space from the input plane,
default to bypass mode.

Reviewed-by: Nevenko Stupar <[email protected]>
Signed-off-by: Jerry Zuo <[email protected]>
Signed-off-by: Daniel Sa <[email protected]>
Tested-by: Daniel Wheeler <[email protected]>
Signed-off-by: Alex Deucher <[email protected]>

Author: Daniel Sa

drivers/gpu/drm/amd/display/dc/dpp/dcn401/dcn401_dpp_cm.c

@@ -246,16 +246,6 @@ void dpp401_set_cursor_matrix(
 	enum dc_color_space color_space,
 	struct dc_csc_transform cursor_csc_color_matrix)
 {
-	struct dpp_input_csc_matrix cursor_tbl_entry;
-	unsigned int i;
-
-	if (cursor_csc_color_matrix.enable_adjustment == true) {
-		for (i = 0; i < 12; i++)
-			cursor_tbl_entry.regval[i] = cursor_csc_color_matrix.matrix[i];
-
-		cursor_tbl_entry.color_space = color_space;
-		dpp401_program_cursor_csc(dpp_base, color_space, &cursor_tbl_entry);
-	} else {
-		dpp401_program_cursor_csc(dpp_base, color_space, NULL);
-	}
+	//Since we don't have cursor matrix information, force bypass mode by passing in unknown color space
+	dpp401_program_cursor_csc(dpp_base, COLOR_SPACE_UNKNOWN, NULL);
 }