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 | 92 |
1 files changed, 92 insertions, 0 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 new file mode 100644 index 000000000000..24b6cc1dfc64 --- /dev/null +++ b/drivers/gpu/drm/amd/display/modules/info_packet/info_packet.c @@ -0,0 +1,92 @@ +/* + * Copyright 2018 Advanced Micro Devices, Inc. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR + * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, + * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR + * OTHER DEALINGS IN THE SOFTWARE. + * + * Authors: AMD + * + */ + +#include "mod_info_packet.h" +#include "core_types.h" + +static void mod_build_vsc_infopacket(const struct dc_stream_state *stream, + struct dc_info_packet *info_packet) +{ + unsigned int vscPacketRevision = 0; + unsigned int i; + + if (stream->timing.timing_3d_format != TIMING_3D_FORMAT_NONE && stream->view_format != VIEW_3D_FORMAT_NONE) + vscPacketRevision = 1; + + + /*VSC packet set to 2 when DP revision >= 1.2*/ + if (stream->psr_version != 0) + vscPacketRevision = 2; + + + /* VSC packet not needed based on the features + * supported by this DP display + */ + if (vscPacketRevision == 0) + return; + + if (vscPacketRevision == 0x2) { + /* Secondary-data Packet ID = 0*/ + info_packet->hb0 = 0x00; + /* 07h - Packet Type Value indicating Video + * Stream Configuration packet + */ + info_packet->hb1 = 0x07; + /* 02h = VSC SDP supporting 3D stereo and PSR + * (applies to eDP v1.3 or higher). + */ + info_packet->hb2 = 0x02; + /* 08h = VSC packet supporting 3D stereo + PSR + * (HB2 = 02h). + */ + info_packet->hb3 = 0x08; + + for (i = 0; i < 28; i++) + info_packet->sb[i] = 0; + + info_packet->valid = true; + } + + if (vscPacketRevision == 0x1) { + + info_packet->hb0 = 0x00; // Secondary-data Packet ID = 0 + info_packet->hb1 = 0x07; // 07h = Packet Type Value indicating Video Stream Configuration packet + info_packet->hb2 = 0x01; // 01h = Revision number. VSC SDP supporting 3D stereo only + info_packet->hb3 = 0x01; // 01h = VSC SDP supporting 3D stereo only (HB2 = 01h). + + if (stream->timing.timing_3d_format == TIMING_3D_FORMAT_INBAND_FA) + info_packet->sb[0] = 0x1; + + info_packet->valid = true; + } +} + +void mod_build_infopackets(struct info_packet_inputs *inputs, + struct info_packets *info_packets) +{ + if (info_packets->pVscInfoPacket != NULL) + mod_build_vsc_infopacket(inputs->pStream, info_packets->pVscInfoPacket); +} + |