diff options
Diffstat (limited to 'drivers/gpu/drm/amd/display/modules/info_packet/info_packet.c')
| -rw-r--r-- | drivers/gpu/drm/amd/display/modules/info_packet/info_packet.c | 142 |
1 files changed, 133 insertions, 9 deletions
diff --git a/drivers/gpu/drm/amd/display/modules/info_packet/info_packet.c b/drivers/gpu/drm/amd/display/modules/info_packet/info_packet.c index d885d642ed7f..6a8a056424b8 100644 --- a/drivers/gpu/drm/amd/display/modules/info_packet/info_packet.c +++ b/drivers/gpu/drm/amd/display/modules/info_packet/info_packet.c @@ -30,7 +30,22 @@ #include "mod_freesync.h" #include "dc.h" +enum vsc_packet_revision { + vsc_packet_undefined = 0, + //01h = VSC SDP supports only 3D stereo. + vsc_packet_rev1 = 1, + //02h = 3D stereo + PSR. + vsc_packet_rev2 = 2, + //03h = 3D stereo + PSR2. + vsc_packet_rev3 = 3, + //04h = 3D stereo + PSR/PSR2 + Y-coordinate. + vsc_packet_rev4 = 4, + //05h = 3D stereo + PSR/PSR2 + Y-coordinate + Pixel Encoding/Colorimetry Format + vsc_packet_rev5 = 5, +}; + #define HDMI_INFOFRAME_TYPE_VENDOR 0x81 +#define HF_VSIF_VERSION 1 // VTEM Byte Offset #define VTEM_PB0 0 @@ -115,35 +130,41 @@ enum ColorimetryYCCDP { }; void mod_build_vsc_infopacket(const struct dc_stream_state *stream, - struct dc_info_packet *info_packet) + struct dc_info_packet *info_packet, + bool *use_vsc_sdp_for_colorimetry) { - unsigned int vscPacketRevision = 0; + unsigned int vsc_packet_revision = vsc_packet_undefined; unsigned int i; unsigned int pixelEncoding = 0; unsigned int colorimetryFormat = 0; bool stereo3dSupport = false; + /* Initialize first, later if infopacket is valid determine if VSC SDP + * should be used to signal colorimetry format and pixel encoding. + */ + *use_vsc_sdp_for_colorimetry = false; + if (stream->timing.timing_3d_format != TIMING_3D_FORMAT_NONE && stream->view_format != VIEW_3D_FORMAT_NONE) { - vscPacketRevision = 1; + vsc_packet_revision = vsc_packet_rev1; stereo3dSupport = true; } /*VSC packet set to 2 when DP revision >= 1.2*/ if (stream->psr_version != 0) - vscPacketRevision = 2; + vsc_packet_revision = vsc_packet_rev2; /* Update to revision 5 for extended colorimetry support for DPCD 1.4+ */ if (stream->link->dpcd_caps.dpcd_rev.raw >= 0x14 && stream->link->dpcd_caps.dprx_feature.bits.VSC_SDP_COLORIMETRY_SUPPORTED) - vscPacketRevision = 5; + vsc_packet_revision = vsc_packet_rev5; /* VSC packet not needed based on the features * supported by this DP display */ - if (vscPacketRevision == 0) + if (vsc_packet_revision == vsc_packet_undefined) return; - if (vscPacketRevision == 0x2) { + if (vsc_packet_revision == vsc_packet_rev2) { /* Secondary-data Packet ID = 0*/ info_packet->hb0 = 0x00; /* 07h - Packet Type Value indicating Video @@ -165,7 +186,7 @@ void mod_build_vsc_infopacket(const struct dc_stream_state *stream, info_packet->valid = true; } - if (vscPacketRevision == 0x1) { + if (vsc_packet_revision == vsc_packet_rev1) { info_packet->hb0 = 0x00; // Secondary-data Packet ID = 0 info_packet->hb1 = 0x07; // 07h = Packet Type Value indicating Video Stream Configuration packet @@ -236,7 +257,7 @@ void mod_build_vsc_infopacket(const struct dc_stream_state *stream, * the Pixel Encoding/Colorimetry Format and that a Sink device must ignore MISC1, bit 7, and * MISC0, bits 7:1 (MISC1, bit 7. and MISC0, bits 7:1 become "don't care").) */ - if (vscPacketRevision == 0x5) { + if (vsc_packet_revision == vsc_packet_rev5) { /* Secondary-data Packet ID = 0 */ info_packet->hb0 = 0x00; /* 07h - Packet Type Value indicating Video Stream Configuration packet */ @@ -248,6 +269,13 @@ void mod_build_vsc_infopacket(const struct dc_stream_state *stream, info_packet->valid = true; + /* If we are using VSC SDP revision 05h, use this to signal for + * colorimetry format and pixel encoding. HW should later be + * programmed to set MSA MISC1 bit 6 to indicate ignore + * colorimetry format and pixel encoding in the MSA. + */ + *use_vsc_sdp_for_colorimetry = true; + /* Set VSC SDP fields for pixel encoding and colorimetry format from DP 1.3 specs * Data Bytes DB 18~16 * Bits 3:0 (Colorimetry Format) | Bits 7:4 (Pixel Encoding) @@ -392,6 +420,102 @@ void mod_build_vsc_infopacket(const struct dc_stream_state *stream, */ info_packet->sb[18] = 0; } +} + +/** + ***************************************************************************** + * Function: mod_build_hf_vsif_infopacket + * + * @brief + * Prepare HDMI Vendor Specific info frame. + * Follows HDMI Spec to build up Vendor Specific info frame + * + * @param [in] stream: contains data we may need to construct VSIF (i.e. timing_3d_format, etc.) + * @param [out] info_packet: output structure where to store VSIF + ***************************************************************************** + */ +void mod_build_hf_vsif_infopacket(const struct dc_stream_state *stream, + struct dc_info_packet *info_packet, int ALLMEnabled, int ALLMValue) +{ + unsigned int length = 5; + bool hdmi_vic_mode = false; + uint8_t checksum = 0; + uint32_t i = 0; + enum dc_timing_3d_format format; + bool bALLM = (bool)ALLMEnabled; + bool bALLMVal = (bool)ALLMValue; + + info_packet->valid = false; + format = stream->timing.timing_3d_format; + if (stream->view_format == VIEW_3D_FORMAT_NONE) + format = TIMING_3D_FORMAT_NONE; + + if (stream->timing.hdmi_vic != 0 + && stream->timing.h_total >= 3840 + && stream->timing.v_total >= 2160 + && format == TIMING_3D_FORMAT_NONE) + hdmi_vic_mode = true; + + if ((format == TIMING_3D_FORMAT_NONE) && !hdmi_vic_mode && !bALLM) + return; + + info_packet->sb[1] = 0x03; + info_packet->sb[2] = 0x0C; + info_packet->sb[3] = 0x00; + + if (bALLM) { + info_packet->sb[1] = 0xD8; + info_packet->sb[2] = 0x5D; + info_packet->sb[3] = 0xC4; + info_packet->sb[4] = HF_VSIF_VERSION; + } + + if (format != TIMING_3D_FORMAT_NONE) + info_packet->sb[4] = (2 << 5); + + else if (hdmi_vic_mode) + info_packet->sb[4] = (1 << 5); + + switch (format) { + case TIMING_3D_FORMAT_HW_FRAME_PACKING: + case TIMING_3D_FORMAT_SW_FRAME_PACKING: + info_packet->sb[5] = (0x0 << 4); + break; + case TIMING_3D_FORMAT_SIDE_BY_SIDE: + case TIMING_3D_FORMAT_SBS_SW_PACKED: + info_packet->sb[5] = (0x8 << 4); + length = 6; + break; + + case TIMING_3D_FORMAT_TOP_AND_BOTTOM: + case TIMING_3D_FORMAT_TB_SW_PACKED: + info_packet->sb[5] = (0x6 << 4); + break; + + default: + break; + } + + if (hdmi_vic_mode) + info_packet->sb[5] = stream->timing.hdmi_vic; + + info_packet->hb0 = HDMI_INFOFRAME_TYPE_VENDOR; + info_packet->hb1 = 0x01; + info_packet->hb2 = (uint8_t) (length); + + if (bALLM) + info_packet->sb[5] = (info_packet->sb[5] & ~0x02) | (bALLMVal << 1); + + checksum += info_packet->hb0; + checksum += info_packet->hb1; + checksum += info_packet->hb2; + + for (i = 1; i <= length; i++) + checksum += info_packet->sb[i]; + + info_packet->sb[0] = (uint8_t) (0x100 - checksum); + + info_packet->valid = true; } |