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 | 98 |
1 files changed, 98 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 index d885d642ed7f..db6b08f6d093 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 @@ -31,6 +31,7 @@ #include "dc.h" #define HDMI_INFOFRAME_TYPE_VENDOR 0x81 +#define HF_VSIF_VERSION 1 // VTEM Byte Offset #define VTEM_PB0 0 @@ -395,3 +396,100 @@ void mod_build_vsc_infopacket(const struct dc_stream_state *stream, } +/** + ***************************************************************************** + * 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; +} + |