diff options
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/dc.h | 8 | ||||
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/dc_dp_types.h | 16 | ||||
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/dc_types.h | 8 | ||||
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/link/protocols/link_dp_capability.c | 5 |
4 files changed, 37 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/dc.h b/drivers/gpu/drm/amd/display/dc/dc.h index c92232c14c50..2b1fb1de43c5 100644 --- a/drivers/gpu/drm/amd/display/dc/dc.h +++ b/drivers/gpu/drm/amd/display/dc/dc.h @@ -2383,6 +2383,13 @@ struct dc_sink_dsc_caps { struct dsc_dec_dpcd_caps dsc_dec_caps; }; +struct dc_sink_hblank_expansion_caps { + // 'true' if these are virtual DPCD's HBlank expansion caps (immediately upstream of sink in MST topology), + // 'false' if they are sink's HBlank expansion caps + bool is_virtual_dpcd_hblank_expansion; + struct hblank_expansion_dpcd_caps dpcd_caps; +}; + struct dc_sink_fec_caps { bool is_rx_fec_supported; bool is_topology_fec_supported; @@ -2409,6 +2416,7 @@ struct dc_sink { struct scdc_caps scdc_caps; struct dc_sink_dsc_caps dsc_caps; struct dc_sink_fec_caps fec_caps; + struct dc_sink_hblank_expansion_caps hblank_expansion_caps; bool is_vsc_sdp_colorimetry_supported; diff --git a/drivers/gpu/drm/amd/display/dc/dc_dp_types.h b/drivers/gpu/drm/amd/display/dc/dc_dp_types.h index 8dd6eb044829..94ce8fe74481 100644 --- a/drivers/gpu/drm/amd/display/dc/dc_dp_types.h +++ b/drivers/gpu/drm/amd/display/dc/dc_dp_types.h @@ -969,6 +969,21 @@ union dp_sink_video_fallback_formats { uint8_t raw; }; +union dp_receive_port0_cap { + struct { + uint8_t RESERVED :1; + uint8_t LOCAL_EDID_PRESENT :1; + uint8_t ASSOCIATED_TO_PRECEDING_PORT:1; + uint8_t HBLANK_EXPANSION_CAPABLE :1; + uint8_t BUFFER_SIZE_UNIT :1; + uint8_t BUFFER_SIZE_PER_PORT :1; + uint8_t HBLANK_REDUCTION_CAPABLE :1; + uint8_t RESERVED2:1; + uint8_t BUFFER_SIZE:8; + } bits; + uint8_t raw[2]; +}; + union dpcd_max_uncompressed_pixel_rate_cap { struct { uint16_t max_uncompressed_pixel_rate_cap :15; @@ -1193,6 +1208,7 @@ struct dpcd_caps { struct replay_info pr_info; uint16_t edp_oled_emission_rate; + union dp_receive_port0_cap receive_port0_cap; }; union dpcd_sink_ext_caps { diff --git a/drivers/gpu/drm/amd/display/dc/dc_types.h b/drivers/gpu/drm/amd/display/dc/dc_types.h index 9466b63644d5..0243d1b675d8 100644 --- a/drivers/gpu/drm/amd/display/dc/dc_types.h +++ b/drivers/gpu/drm/amd/display/dc/dc_types.h @@ -874,6 +874,14 @@ struct dsc_dec_dpcd_caps { bool is_dp; /* Decoded format */ }; +struct hblank_expansion_dpcd_caps { + bool expansion_supported; + bool reduction_supported; + bool buffer_unit_bytes; /* True: buffer size in bytes. False: buffer size in pixels*/ + bool buffer_per_port; /* True: buffer size per port. False: buffer size per lane*/ + uint32_t buffer_size; /* Add 1 to value and multiply by 32 */ +}; + struct dc_golden_table { uint16_t dc_golden_table_ver; uint32_t aux_dphy_rx_control0_val; diff --git a/drivers/gpu/drm/amd/display/dc/link/protocols/link_dp_capability.c b/drivers/gpu/drm/amd/display/dc/link/protocols/link_dp_capability.c index ce9d799d2386..d1d869cc85c7 100644 --- a/drivers/gpu/drm/amd/display/dc/link/protocols/link_dp_capability.c +++ b/drivers/gpu/drm/amd/display/dc/link/protocols/link_dp_capability.c @@ -1779,6 +1779,11 @@ static bool retrieve_link_cap(struct dc_link *link) link->test_pattern_enabled = false; link->compliance_test_state.raw = 0; + link->dpcd_caps.receive_port0_cap.raw[0] = + dpcd_data[DP_RECEIVE_PORT_0_CAP_0 - DP_DPCD_REV]; + link->dpcd_caps.receive_port0_cap.raw[1] = + dpcd_data[DP_RECEIVE_PORT_0_BUFFER_SIZE - DP_DPCD_REV]; + /* read sink count */ core_link_read_dpcd(link, DP_SINK_COUNT, |