diff options
Diffstat (limited to 'drivers/gpu/drm/amd/display/modules/freesync/freesync.c')
| -rw-r--r-- | drivers/gpu/drm/amd/display/modules/freesync/freesync.c | 164 |
1 files changed, 144 insertions, 20 deletions
diff --git a/drivers/gpu/drm/amd/display/modules/freesync/freesync.c b/drivers/gpu/drm/amd/display/modules/freesync/freesync.c index e1688902a1b0..4018c7180d00 100644 --- a/drivers/gpu/drm/amd/display/modules/freesync/freesync.c +++ b/drivers/gpu/drm/amd/display/modules/freesync/freesync.c @@ -480,22 +480,11 @@ bool mod_freesync_get_v_position(struct mod_freesync *mod_freesync, return false; } -void mod_freesync_build_vrr_infopacket(struct mod_freesync *mod_freesync, - const struct dc_stream_state *stream, - const struct mod_vrr_params *vrr, - struct dc_info_packet *infopacket) +static void build_vrr_infopacket_header_v1(enum signal_type signal, + struct dc_info_packet *infopacket, + unsigned int *payload_size) { - /* SPD info packet for FreeSync */ - unsigned char checksum = 0; - unsigned int idx, payload_size = 0; - - /* Check if Freesync is supported. Return if false. If true, - * set the corresponding bit in the info packet - */ - if (!vrr->supported || !vrr->send_vsif) - return; - - if (dc_is_hdmi_signal(stream->signal)) { + if (dc_is_hdmi_signal(signal)) { /* HEADER */ @@ -510,9 +499,9 @@ void mod_freesync_build_vrr_infopacket(struct mod_freesync *mod_freesync, /* HB2 = [Bits 7:5 = 0] [Bits 4:0 = Length = 0x08] */ infopacket->hb2 = 0x08; - payload_size = 0x08; + *payload_size = 0x08; - } else if (dc_is_dp_signal(stream->signal)) { + } else if (dc_is_dp_signal(signal)) { /* HEADER */ @@ -536,9 +525,62 @@ void mod_freesync_build_vrr_infopacket(struct mod_freesync *mod_freesync, */ infopacket->hb3 = 0x04; - payload_size = 0x1B; + *payload_size = 0x1B; } +} + +static void build_vrr_infopacket_header_v2(enum signal_type signal, + struct dc_info_packet *infopacket, + unsigned int *payload_size) +{ + if (dc_is_hdmi_signal(signal)) { + + /* HEADER */ + + /* HB0 = Packet Type = 0x83 (Source Product + * Descriptor InfoFrame) + */ + infopacket->hb0 = DC_HDMI_INFOFRAME_TYPE_SPD; + + /* HB1 = Version = 0x02 */ + infopacket->hb1 = 0x02; + + /* HB2 = [Bits 7:5 = 0] [Bits 4:0 = Length = 0x09] */ + infopacket->hb2 = 0x09; + + *payload_size = 0x0A; + } else if (dc_is_dp_signal(signal)) { + + /* HEADER */ + + /* HB0 = Secondary-data Packet ID = 0 - Only non-zero + * when used to associate audio related info packets + */ + infopacket->hb0 = 0x00; + + /* HB1 = Packet Type = 0x83 (Source Product + * Descriptor InfoFrame) + */ + infopacket->hb1 = DC_HDMI_INFOFRAME_TYPE_SPD; + + /* HB2 = [Bits 7:0 = Least significant eight bits - + * For INFOFRAME, the value must be 1Bh] + */ + infopacket->hb2 = 0x1B; + + /* HB3 = [Bits 7:2 = INFOFRAME SDP Version Number = 0x2] + * [Bits 1:0 = Most significant two bits = 0x00] + */ + infopacket->hb3 = 0x08; + + *payload_size = 0x1B; + } +} + +static void build_vrr_infopacket_data(const struct mod_vrr_params *vrr, + struct dc_info_packet *infopacket) +{ /* PB1 = 0x1A (24bit AMD IEEE OUI (0x00001A) - Byte 0) */ infopacket->sb[1] = 0x1A; @@ -576,15 +618,39 @@ void mod_freesync_build_vrr_infopacket(struct mod_freesync *mod_freesync, */ infopacket->sb[8] = (unsigned char)(vrr->max_refresh_in_uhz / 1000000); - /* PB9 - PB27 = Reserved */ + //FreeSync HDR + infopacket->sb[9] = 0; + infopacket->sb[10] = 0; +} + +static void build_vrr_infopacket_fs2_data(enum color_transfer_func app_tf, + struct dc_info_packet *infopacket) +{ + if (app_tf != transfer_func_unknown) { + infopacket->valid = true; + + infopacket->sb[6] |= 0x08; // PB6 = [Bit 3 = Native Color Active] + + if (app_tf == transfer_func_gamma_22) { + infopacket->sb[9] |= 0x04; // PB6 = [Bit 2 = Gamma 2.2 EOTF Active] + } + } +} + +static void build_vrr_infopacket_checksum(unsigned int *payload_size, + struct dc_info_packet *infopacket) +{ /* Calculate checksum */ + unsigned int idx = 0; + unsigned char checksum = 0; + checksum += infopacket->hb0; checksum += infopacket->hb1; checksum += infopacket->hb2; checksum += infopacket->hb3; - for (idx = 1; idx <= payload_size; idx++) + for (idx = 1; idx <= *payload_size; idx++) checksum += infopacket->sb[idx]; /* PB0 = Checksum (one byte complement) */ @@ -593,6 +659,64 @@ void mod_freesync_build_vrr_infopacket(struct mod_freesync *mod_freesync, infopacket->valid = true; } +static void build_vrr_infopacket_v1(enum signal_type signal, + const struct mod_vrr_params *vrr, + struct dc_info_packet *infopacket) +{ + /* SPD info packet for FreeSync */ + unsigned int payload_size = 0; + + build_vrr_infopacket_header_v1(signal, infopacket, &payload_size); + build_vrr_infopacket_data(vrr, infopacket); + build_vrr_infopacket_checksum(&payload_size, infopacket); + + infopacket->valid = true; +} + +static void build_vrr_infopacket_v2(enum signal_type signal, + const struct mod_vrr_params *vrr, + const enum color_transfer_func *app_tf, + struct dc_info_packet *infopacket) +{ + unsigned int payload_size = 0; + + build_vrr_infopacket_header_v2(signal, infopacket, &payload_size); + build_vrr_infopacket_data(vrr, infopacket); + + if (app_tf != NULL) + build_vrr_infopacket_fs2_data(*app_tf, infopacket); + + build_vrr_infopacket_checksum(&payload_size, infopacket); + + infopacket->valid = true; +} + +void mod_freesync_build_vrr_infopacket(struct mod_freesync *mod_freesync, + const struct dc_stream_state *stream, + const struct mod_vrr_params *vrr, + enum vrr_packet_type packet_type, + const enum color_transfer_func *app_tf, + struct dc_info_packet *infopacket) +{ + /* SPD info packet for FreeSync */ + + /* Check if Freesync is supported. Return if false. If true, + * set the corresponding bit in the info packet + */ + if (!vrr->supported || !vrr->send_vsif) + return; + + switch (packet_type) { + case packet_type_fs2: + build_vrr_infopacket_v2(stream->signal, vrr, app_tf, infopacket); + break; + case packet_type_vrr: + case packet_type_fs1: + default: + build_vrr_infopacket_v1(stream->signal, vrr, infopacket); + } +} + void mod_freesync_build_vrr_params(struct mod_freesync *mod_freesync, const struct dc_stream_state *stream, struct mod_freesync_config *in_config, |
