drm/amd/display: Use pixels per container logic for DCN314 DCCG dividers

[Why]
DP DSC YCbCr422 not working because dcn314_calculate_dccg_k1_k2_values
does not account for two pixels per container

[How]
Replace the contents of dcn314_calculate_dccg_k1_k2_values with the
code from the function dcn32_calculate_dccg_k1_k2_values

Reviewed-by: Charlene Liu <Charlene.Liu@amd.com>
Acked-by: Tom Chung <chiahsuan.chung@amd.com>
Signed-off-by: Daniel Miess <Daniel.Miess@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

diff --git a/drivers/gpu/drm/amd/display/dc/dcn314/dcn314_hwseq.c b/drivers/gpu/drm/amd/display/dc/dcn314/dcn314_hwseq.c
index 755c715..452f4a9 100644 (file)
--- a/drivers/gpu/drm/amd/display/dc/dcn314/dcn314_hwseq.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn314/dcn314_hwseq.c
@@ -343,7 +343,10 @@ unsigned int dcn314_calculate_dccg_k1_k2_values(struct pipe_ctx *pipe_ctx, unsig
 {
        struct dc_stream_state *stream = pipe_ctx->stream;
        unsigned int odm_combine_factor = 0;
+       struct dc *dc = pipe_ctx->stream->ctx->dc;
+       bool two_pix_per_container = false;
 
+       two_pix_per_container = optc2_is_two_pixels_per_containter(&stream->timing);
        odm_combine_factor = get_odm_config(pipe_ctx, NULL);
 
        if (is_dp_128b_132b_signal(pipe_ctx)) {
@@ -355,16 +358,13 @@ unsigned int dcn314_calculate_dccg_k1_k2_values(struct pipe_ctx *pipe_ctx, unsig
                else
                        *k2_div = PIXEL_RATE_DIV_BY_4;
        } else if (dc_is_dp_signal(pipe_ctx->stream->signal)) {
-               if (stream->timing.pixel_encoding == PIXEL_ENCODING_YCBCR420) {
+               if (two_pix_per_container) {
                        *k1_div = PIXEL_RATE_DIV_BY_1;
                        *k2_div = PIXEL_RATE_DIV_BY_2;
-               } else if (stream->timing.pixel_encoding == PIXEL_ENCODING_YCBCR422) {
-                       *k1_div = PIXEL_RATE_DIV_BY_2;
-                       *k2_div = PIXEL_RATE_DIV_BY_2;
                } else {
-                       if (odm_combine_factor == 1)
-                               *k2_div = PIXEL_RATE_DIV_BY_4;
-                       else if (odm_combine_factor == 2)
+                       *k1_div = PIXEL_RATE_DIV_BY_1;
+                       *k2_div = PIXEL_RATE_DIV_BY_4;
+                       if ((odm_combine_factor == 2) || dc->debug.enable_dp_dig_pixel_rate_div_policy)
                                *k2_div = PIXEL_RATE_DIV_BY_2;
                }
        }