drm/amd/display: Add debug option to disable DSC support

[how]
Empty dsc enc caps when debug option is set to disable DSC.

Signed-off-by: Wenjing Liu <Wenjing.Liu@amd.com>
Reviewed-by: Nikola Cornij <Nikola.Cornij@amd.com>
Acked-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

diff --git a/drivers/gpu/drm/amd/display/dc/dc.h b/drivers/gpu/drm/amd/display/dc/dc.h
index 3fa85a5..7d31dcb 100644 (file)
--- a/drivers/gpu/drm/amd/display/dc/dc.h
+++ b/drivers/gpu/drm/amd/display/dc/dc.h
@@ -425,6 +425,7 @@ struct dc_debug_options {
        bool validate_dml_output;
        bool enable_dmcub_surface_flip;
        bool usbc_combo_phy_reset_wa;
+       bool disable_dsc;
 };
 
 struct dc_debug_data {

diff --git a/drivers/gpu/drm/amd/display/dc/dsc/dc_dsc.c b/drivers/gpu/drm/amd/display/dc/dsc/dc_dsc.c
index 8b78fcb..87d682d 100644 (file)
--- a/drivers/gpu/drm/amd/display/dc/dsc/dc_dsc.c
+++ b/drivers/gpu/drm/amd/display/dc/dsc/dc_dsc.c
@@ -224,7 +224,8 @@ static void get_dsc_enc_caps(
 
        memset(dsc_enc_caps, 0, sizeof(struct dsc_enc_caps));
        if (dsc) {
-               dsc->funcs->dsc_get_enc_caps(dsc_enc_caps, pixel_clock_100Hz);
+               if (!dsc->ctx->dc->debug.disable_dsc)
+                       dsc->funcs->dsc_get_enc_caps(dsc_enc_caps, pixel_clock_100Hz);
                if (dsc->ctx->dc->debug.native422_support)
                        dsc_enc_caps->color_formats.bits.YCBCR_NATIVE_422 = 1;
        }