Commit 9bc41626 authored by Reza Amini's avatar Reza Amini Committed by Alex Deucher
Browse files

drm/amd/display: Implement VSIF V3 extended refresh rate feature 



[Why]
Implement feature of VSIF V3

[How]
Set refresh rate MSB for extended range

Signed-off-by: default avatarReza Amini <Reza.Amini@amd.com>
Reviewed-by: default avatarAnthony Koo <Anthony.Koo@amd.com>
Acked-by: default avatarEryk Brol <eryk.brol@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent a6d64c1a

drivers/gpu/drm/amd/display/modules/freesync/freesync.c

+82 −18
Original line number Diff line number Diff line
@@ -569,6 +569,12 @@ static void build_vrr_infopacket_data_v1(const struct mod_vrr_params *vrr, 
static void build_vrr_infopacket_data_v3(const struct mod_vrr_params *vrr,

		struct dc_info_packet *infopacket)

{

	unsigned int min_refresh;

	unsigned int max_refresh;

	unsigned int fixed_refresh;

	unsigned int min_programmed;

	unsigned int max_programmed;



	/* PB1 = 0x1A (24bit AMD IEEE OUI (0x00001A) - Byte 0) */

	infopacket->sb[1] = 0x1A;
@@ -598,23 +604,29 @@ static void build_vrr_infopacket_data_v3(const struct mod_vrr_params *vrr, 
			vrr->state == VRR_STATE_ACTIVE_FIXED)

		infopacket->sb[6] |= 0x04;



	if (vrr->state == VRR_STATE_ACTIVE_FIXED) {

		/* PB7 = FreeSync Minimum refresh rate (Hz) */

		infopacket->sb[7] = (unsigned char)((vrr->fixed_refresh_in_uhz + 500000) / 1000000);

		/* PB8 = FreeSync Maximum refresh rate (Hz) */

		infopacket->sb[8] = (unsigned char)((vrr->fixed_refresh_in_uhz + 500000) / 1000000);

	} else if (vrr->state == VRR_STATE_ACTIVE_VARIABLE) {

		/* PB7 = FreeSync Minimum refresh rate (Hz) */

		infopacket->sb[7] = (unsigned char)((vrr->min_refresh_in_uhz + 500000) / 1000000);

		/* PB8 = FreeSync Maximum refresh rate (Hz) */

		infopacket->sb[8] = (unsigned char)((vrr->max_refresh_in_uhz + 500000) / 1000000);

	} else {

		// Non-fs case, program nominal range

	min_refresh = (vrr->min_refresh_in_uhz + 500000) / 1000000;

	max_refresh = (vrr->max_refresh_in_uhz + 500000) / 1000000;

	fixed_refresh = (vrr->fixed_refresh_in_uhz + 500000) / 1000000;



	min_programmed = (vrr->state == VRR_STATE_ACTIVE_FIXED) ? fixed_refresh :

			(vrr->state == VRR_STATE_ACTIVE_VARIABLE) ? min_refresh :

			max_refresh; // Non-fs case, program nominal range



	max_programmed = (vrr->state == VRR_STATE_ACTIVE_FIXED) ? fixed_refresh :

			(vrr->state == VRR_STATE_ACTIVE_VARIABLE) ? max_refresh :

			max_refresh;// Non-fs case, program nominal range



	/* PB7 = FreeSync Minimum refresh rate (Hz) */

		infopacket->sb[7] = (unsigned char)((vrr->max_refresh_in_uhz + 500000) / 1000000);

	infopacket->sb[7] = min_programmed & 0xFF;



	/* PB8 = FreeSync Maximum refresh rate (Hz) */

		infopacket->sb[8] = (unsigned char)((vrr->max_refresh_in_uhz + 500000) / 1000000);

	}

	infopacket->sb[8] = max_programmed & 0xFF;



	/* PB11 : MSB FreeSync Minimum refresh rate [Hz] - bits 15:8 */

	infopacket->sb[11] = (min_programmed >> 8) & 0xFF;



	/* PB12 : MSB FreeSync Maximum refresh rate [Hz] - bits 15:8 */

	infopacket->sb[12] = (max_programmed >> 8) & 0xFF;



	//FreeSync HDR

	infopacket->sb[9] = 0;
@@ -733,6 +745,58 @@ static void build_vrr_infopacket_header_v2(enum signal_type signal, 
	}

}



static void build_vrr_infopacket_header_v3(enum signal_type signal,

		struct dc_info_packet *infopacket,

		unsigned int *payload_size)

{

	unsigned char version;



	version = 3;

	if (dc_is_hdmi_signal(signal)) {



		/* HEADER */



		/* HB0  = Packet Type = 0x83 (Source Product

		 *	  Descriptor InfoFrame)

		 */

		infopacket->hb0 = DC_HDMI_INFOFRAME_TYPE_SPD;



		/* HB1  = Version = 0x03 */

		infopacket->hb1 = version;



		/* HB2  = [Bits 7:5 = 0] [Bits 4:0 = Length] */

		*payload_size = 0x10;

		infopacket->hb2 = *payload_size - 1; //-1 for checksum



	} 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 = (version & 0x3F) << 2;



		*payload_size = 0x1B;

	}

}



static void build_vrr_infopacket_checksum(unsigned int *payload_size,

		struct dc_info_packet *infopacket)

{
@@ -818,7 +882,7 @@ static void build_vrr_infopacket_v3(enum signal_type signal, 
{

	unsigned int payload_size = 0;



	build_vrr_infopacket_header_v2(signal, infopacket, &payload_size);

	build_vrr_infopacket_header_v3(signal, infopacket, &payload_size);

	build_vrr_infopacket_data_v3(vrr, infopacket);



	build_vrr_infopacket_fs2_data(app_tf, infopacket);