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| author | Charlene Liu <charlene.liu@amd.com> | 2018-06-26 18:49:32 -0400 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2018-07-13 14:51:11 -0500 |
| commit | 8fc0a0d4a0a49ed148db2e484539516ad67b6321 (patch) | |
| tree | 0c27b1c2c8e892f09a70548c012fdc21838afab7 | |
| parent | e0d85b20c74fc078862262da64b36e8e7b6663e7 (diff) | |
| download | linux-8fc0a0d4a0a49ed148db2e484539516ad67b6321.tar.bz2 | |
drm/amd/display: add DalEnableHDMI20 key support
[why]
"DalEnableHDMI20" set to 0, disallow HDMI YCbCr420 and pixel clock > 340Mhz
Default is enabled.
Signed-off-by: Charlene Liu <charlene.liu@amd.com>
Reviewed-by: Jun Lei <Jun.Lei@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/dc.h | 1 | ||||
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/dce/dce_link_encoder.c | 6 | ||||
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/dcn10/dcn10_link_encoder.c | 6 |
3 files changed, 13 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/dc.h b/drivers/gpu/drm/amd/display/dc/dc.h index ede3489b4f37..721c5cdff38f 100644 --- a/drivers/gpu/drm/amd/display/dc/dc.h +++ b/drivers/gpu/drm/amd/display/dc/dc.h @@ -251,6 +251,7 @@ struct dc_debug { bool recovery_enabled; bool avoid_vbios_exec_table; bool scl_reset_length10; + bool hdmi20_disable; }; struct dc_state; diff --git a/drivers/gpu/drm/amd/display/dc/dce/dce_link_encoder.c b/drivers/gpu/drm/amd/display/dc/dce/dce_link_encoder.c index dbe3b26b6d9e..60e3c6a73d37 100644 --- a/drivers/gpu/drm/amd/display/dc/dce/dce_link_encoder.c +++ b/drivers/gpu/drm/amd/display/dc/dce/dce_link_encoder.c @@ -646,6 +646,9 @@ static bool dce110_link_encoder_validate_hdmi_output( if (!enc110->base.features.flags.bits.HDMI_6GB_EN && adjusted_pix_clk_khz >= 300000) return false; + if (enc110->base.ctx->dc->debug.hdmi20_disable && + crtc_timing->pixel_encoding == PIXEL_ENCODING_YCBCR420) + return false; return true; } @@ -773,6 +776,9 @@ void dce110_link_encoder_construct( __func__, result); } + if (enc110->base.ctx->dc->debug.hdmi20_disable) { + enc110->base.features.flags.bits.HDMI_6GB_EN = 0; + } } bool dce110_link_encoder_validate_output_with_stream( diff --git a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_link_encoder.c b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_link_encoder.c index be78ccb439e9..6f675206a136 100644 --- a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_link_encoder.c +++ b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_link_encoder.c @@ -596,6 +596,9 @@ static bool dcn10_link_encoder_validate_hdmi_output( if (!enc10->base.features.flags.bits.HDMI_6GB_EN && adjusted_pix_clk_khz >= 300000) return false; + if (enc10->base.ctx->dc->debug.hdmi20_disable && + crtc_timing->pixel_encoding == PIXEL_ENCODING_YCBCR420) + return false; return true; } @@ -728,6 +731,9 @@ void dcn10_link_encoder_construct( __func__, result); } + if (enc10->base.ctx->dc->debug.hdmi20_disable) { + enc10->base.features.flags.bits.HDMI_6GB_EN = 0; + } } bool dcn10_link_encoder_validate_output_with_stream( |