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author | Reza Amini <Reza.Amini@amd.com> | 2019-03-07 17:36:29 -0500 |
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committer | Alex Deucher <alexander.deucher@amd.com> | 2019-03-20 23:39:48 -0500 |
commit | e03868ec0cdc508e270e9f1c2d8c97ee4163dd47 (patch) | |
tree | cfdcd8359dfd4ab1dcef78ca7243cd943c8fdde6 | |
parent | 66acd4418d7de131ef3831e52a8af3d2480e5b15 (diff) | |
download | linux-stable-e03868ec0cdc508e270e9f1c2d8c97ee4163dd47.tar.gz linux-stable-e03868ec0cdc508e270e9f1c2d8c97ee4163dd47.tar.bz2 linux-stable-e03868ec0cdc508e270e9f1c2d8c97ee4163dd47.zip |
drm/amd/display: Fix VTEM InfoPacket programming
Refactor setting bit fields. Correcting the offset of MD0.
Initializing the InfoPacket header fields. Defining the field offsets
and masks.
Signed-off-by: Reza Amini <Reza.Amini@amd.com>
Reviewed-by: Anthony Koo <Anthony.Koo@amd.com>
Acked-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
-rw-r--r-- | drivers/gpu/drm/amd/display/modules/freesync/freesync.c | 144 |
1 files changed, 111 insertions, 33 deletions
diff --git a/drivers/gpu/drm/amd/display/modules/freesync/freesync.c b/drivers/gpu/drm/amd/display/modules/freesync/freesync.c index 8f6f744fb2be..3d867e34f8b3 100644 --- a/drivers/gpu/drm/amd/display/modules/freesync/freesync.c +++ b/drivers/gpu/drm/amd/display/modules/freesync/freesync.c @@ -50,6 +50,93 @@ struct core_freesync { struct dc *dc; }; +void setFieldWithMask(unsigned char *dest, unsigned int mask, unsigned int value) +{ + unsigned int shift = 0; + + if (!mask || !dest) + return; + + while (!((mask >> shift) & 1)) + shift++; + + //reset + *dest = *dest & ~mask; + //set + //dont let value span past mask + value = value & (mask >> shift); + //insert value + *dest = *dest | (value << shift); +} + +// VTEM Byte Offset +#define VRR_VTEM_PB0 0 +#define VRR_VTEM_PB1 1 +#define VRR_VTEM_PB2 2 +#define VRR_VTEM_PB3 3 +#define VRR_VTEM_PB4 4 +#define VRR_VTEM_PB5 5 +#define VRR_VTEM_PB6 6 + +#define VRR_VTEM_MD0 7 +#define VRR_VTEM_MD1 8 +#define VRR_VTEM_MD2 9 +#define VRR_VTEM_MD3 10 + + +// VTEM Byte Masks +//PB0 +#define MASK__VRR_VTEM_PB0__RESERVED0 0x01 +#define MASK__VRR_VTEM_PB0__SYNC 0x02 +#define MASK__VRR_VTEM_PB0__VFR 0x04 +#define MASK__VRR_VTEM_PB0__AFR 0x08 +#define MASK__VRR_VTEM_PB0__DS_TYPE 0x30 + //0: Periodic pseudo-static EM Data Set + //1: Periodic dynamic EM Data Set + //2: Unique EM Data Set + //3: Reserved +#define MASK__VRR_VTEM_PB0__END 0x40 +#define MASK__VRR_VTEM_PB0__NEW 0x80 + +//PB1 +#define MASK__VRR_VTEM_PB1__RESERVED1 0xFF + +//PB2 +#define MASK__VRR_VTEM_PB2__ORGANIZATION_ID 0xFF + //0: This is a Vendor Specific EM Data Set + //1: This EM Data Set is defined by This Specification (HDMI 2.1 r102.clean) + //2: This EM Data Set is defined by CTA-861-G + //3: This EM Data Set is defined by VESA +//PB3 +#define MASK__VRR_VTEM_PB3__DATA_SET_TAG_MSB 0xFF +//PB4 +#define MASK__VRR_VTEM_PB4__DATA_SET_TAG_LSB 0xFF +//PB5 +#define MASK__VRR_VTEM_PB5__DATA_SET_LENGTH_MSB 0xFF +//PB6 +#define MASK__VRR_VTEM_PB6__DATA_SET_LENGTH_LSB 0xFF + + + +//PB7-27 (20 bytes): +//PB7 = MD0 +#define MASK__VRR_VTEM_MD0__VRR_EN 0x01 +#define MASK__VRR_VTEM_MD0__M_CONST 0x02 +#define MASK__VRR_VTEM_MD0__RESERVED2 0x0C +#define MASK__VRR_VTEM_MD0__FVA_FACTOR_M1 0xF0 + +//MD1 +#define MASK__VRR_VTEM_MD1__BASE_VFRONT 0xFF + +//MD2 +#define MASK__VRR_VTEM_MD2__BASE_REFRESH_RATE_98 0x03 +#define MASK__VRR_VTEM_MD2__RB 0x04 +#define MASK__VRR_VTEM_MD2__RESERVED3 0xF8 + +//MD3 +#define MASK__VRR_VTEM_MD3__BASE_REFRESH_RATE_07 0xFF + + #define MOD_FREESYNC_TO_CORE(mod_freesync)\ container_of(mod_freesync, struct core_freesync, public) @@ -489,16 +576,14 @@ static void build_vrr_infopacket_header_vtem(enum signal_type signal, // HB0, HB1, HB2 indicates PacketType VTEMPacket infopacket->hb0 = 0x7F; infopacket->hb1 = 0xC0; - infopacket->hb2 = 0x00; - /* HB3 Bit Fields - * Reserved :1 = 0 - * Sync :1 = 0 - * VFR :1 = 1 - * Ds_Type :2 = 0 - * End :1 = 0 - * New :1 = 0 - */ - infopacket->hb3 = 0x20; + infopacket->hb2 = 0x00; //sequence_index + + setFieldWithMask(&infopacket->sb[VRR_VTEM_PB0], MASK__VRR_VTEM_PB0__VFR, 1); + setFieldWithMask(&infopacket->sb[VRR_VTEM_PB2], MASK__VRR_VTEM_PB2__ORGANIZATION_ID, 1); + setFieldWithMask(&infopacket->sb[VRR_VTEM_PB3], MASK__VRR_VTEM_PB3__DATA_SET_TAG_MSB, 0); + setFieldWithMask(&infopacket->sb[VRR_VTEM_PB4], MASK__VRR_VTEM_PB4__DATA_SET_TAG_LSB, 1); + setFieldWithMask(&infopacket->sb[VRR_VTEM_PB5], MASK__VRR_VTEM_PB5__DATA_SET_LENGTH_MSB, 0); + setFieldWithMask(&infopacket->sb[VRR_VTEM_PB6], MASK__VRR_VTEM_PB6__DATA_SET_LENGTH_LSB, 4); } static void build_vrr_infopacket_header_v1(enum signal_type signal, @@ -603,45 +688,36 @@ static void build_vrr_vtem_infopacket_data(const struct dc_stream_state *stream, const struct mod_vrr_params *vrr, struct dc_info_packet *infopacket) { - /* dc_info_packet to VtemPacket Translation of Bit-fields, - * SB[6] - * unsigned char VRR_EN :1 - * unsigned char M_CONST :1 - * unsigned char Reserved2 :2 - * unsigned char FVA_Factor_M1 :4 - * SB[7] - * unsigned char Base_Vfront :8 - * SB[8] - * unsigned char Base_Refresh_Rate_98 :2 - * unsigned char RB :1 - * unsigned char Reserved3 :5 - * SB[9] - * unsigned char Base_RefreshRate_07 :8 - */ unsigned int fieldRateInHz; if (vrr->state == VRR_STATE_ACTIVE_VARIABLE || - vrr->state == VRR_STATE_ACTIVE_FIXED){ - infopacket->sb[6] |= 0x01; //VRR_EN Bit = 1 + vrr->state == VRR_STATE_ACTIVE_FIXED) { + setFieldWithMask(&infopacket->sb[VRR_VTEM_MD0], MASK__VRR_VTEM_MD0__VRR_EN, 1); } else { - infopacket->sb[6] &= 0xFE; //VRR_EN Bit = 0 + setFieldWithMask(&infopacket->sb[VRR_VTEM_MD0], MASK__VRR_VTEM_MD0__VRR_EN, 0); } if (!stream->timing.vic) { - infopacket->sb[7] = stream->timing.v_front_porch; + setFieldWithMask(&infopacket->sb[VRR_VTEM_MD1], MASK__VRR_VTEM_MD1__BASE_VFRONT, + stream->timing.v_front_porch); + /* TODO: In dal2, we check mode flags for a reduced blanking timing. * Need a way to relay that information to this function. * if("ReducedBlanking") * { - * infopacket->sb[8] |= 0x20; //Set 3rd bit to 1 + * setFieldWithMask(&infopacket->sb[VRR_VTEM_MD2], MASK__VRR_VTEM_MD2__RB, 1; * } */ + + //TODO: DAL2 does FixPoint and rounding. Here we might need to account for that fieldRateInHz = (stream->timing.pix_clk_100hz * 100)/ - (stream->timing.h_total * stream->timing.v_total); + (stream->timing.h_total * stream->timing.v_total); - infopacket->sb[8] |= ((fieldRateInHz & 0x300) >> 2); - infopacket->sb[9] |= fieldRateInHz & 0xFF; + setFieldWithMask(&infopacket->sb[VRR_VTEM_MD2], MASK__VRR_VTEM_MD2__BASE_REFRESH_RATE_98, + fieldRateInHz >> 8); + setFieldWithMask(&infopacket->sb[VRR_VTEM_MD3], MASK__VRR_VTEM_MD3__BASE_REFRESH_RATE_07, + fieldRateInHz); } infopacket->valid = true; @@ -765,6 +841,8 @@ static void build_vrr_infopacket_vtem(const struct dc_stream_state *stream, { //VTEM info packet for HdmiVrr + memset(infopacket, 0, sizeof(struct dc_info_packet)); + //VTEM Packet is structured differently build_vrr_infopacket_header_vtem(stream->signal, infopacket); build_vrr_vtem_infopacket_data(stream, vrr, infopacket); |