Overview

MODIFICATION HISTORY:

Ver Who Date Changes

1.0 KI 12/09/17 Initial release. 1.1 ND 2/14/19 mcdp related function call now need dprxss instance address instead of base address as first parameter 1.2 ND 09/02/20 Added support for New Av patgen. Added support for CRC for format 422 for pixel width engine and PPC changes. 1.3 ND 12/26/20 Updated code for YUV422 related pt colorshift issue. Added support for retraining on color format change. 1.4 ND 04/03/21 Moved all global variables declaration from .h to .c files due to gcc compiler compilation error. 1.5 KU 06/17/21 Added support for VCU118 1.6 ND 02/01/22 Corrected XDP_RX_AUDIO_INFO_DATA to XDP_RX_AUDIO_EXT_DATA in DpRxSs_ExtPacketHandler() 1.7 ND 07/21/22 Updated the LMK03318 address. 1.8 ND 08/26/22 Address updation for DDR_MEMORY macro. Added DELAY macro to increase delay in IDT_8T49N24x_SetClock() if encountering iic race condition.

Functions
int	DpPt_SetupIntrSystem ()
	This function is sets up Interrupt system and start it. More...

void	hpd_con ()
	This function is called when a Hot-Plug-Detect (HPD) event is received by the DisplayPort TX Subsystem core. More...

void	DpPt_HpdEventHandler (void *InstancePtr)
	This function takes care HPD event. More...

void	hpd_pulse_con ()
	This function is called when a Hot-Plug-Detect (HPD) pulse is received by the DisplayPort TX Subsystem core. More...

void	DpPt_HpdPulseHandler (void *InstancePtr)
	This function takes care HPD pulse interrupt. More...

void	DpPt_LinkrateChgHandler (void *InstancePtr)
	This function sets link line rate. More...

void	DpPt_CustomWaitUs (void *InstancePtr, u32 MicroSeconds)
	This function is called when DisplayPort TX Subsystem core requires delay or sleep. More...

void	reconfig_clkwiz (u32 clk_reg0, u32 clk_reg1, u32 clk_reg2)
	sets the default drp values into the mmcm this ensures that mmcm is back to original state More...

void	reset_clkwiz ()
	This function will reset Tx side MMCM. More...

void	clk_wiz_locked ()
	This function will check MMCM lock status This MMCM output will be used for Tx side video CLK. More...

void	start_tx (u8 line_rate, u8 lane_count, XVidC_VideoMode res_table, u8 bpc, u8 pat, u8 pat_update)
	This is for Tx only mode This function will start outputing internal video patern image Setup GT, DP, patern and generator. More...

int	VideoFMC_Init (void)
	This function will detect video resolution/frequency change Many GPUs won't re-train when only video res/freq change. More...

void	video_change_detect (u32 count_track, u32 rxMsamisc0_track, u32 bpc_track, u32 recv_clk_freq_track, float recv_frame_clk_track, u32 recv_frame_clk_int_track, int *track_count)
	This function will detect video resolution/frequency change Many GPUs won't re-train when only video res/freq change. More...

void	detect_rx_video_and_startTx (int *track_count1)
	This function detects incoming video and find out video parameters Based on the parameters, set up Tx and VDMA, then start Tx output. More...

void	switch_to_Tx_only (int track_switch, u8 pwr_dwn_x)
	This function will be used when no incoming video at pass-through mode If no video, switching to internal patern generator. More...

void	sink_power_cycle (u32 power_down_time)
	This function will send power down and power up command over AUX. More...

void	update_edid ()
	This function will update and overwrite EDID color depth 10BPC will be changed to 8BPC due to design limitation. More...

void	resetIp ()
	This function toggles HW reset line for all IP's. More...

void	DpRxSs_InfoPacketHandler (void *InstancePtr)
	This function is the callback function for Info Packet Handling. More...

void	DpRxSs_ExtPacketHandler (void *InstancePtr)
	This function is the callback function for Generic Packet Handling of 32-Bytes payload. More...

void	Print_InfoPkt ()
	This function is the callback function for Info Packet Handling. More...

void	Print_ExtPkt ()
	This function is the callback function for Ext Packet Handling. More...

void	DpRxSs_AccessLinkQualHandler (void *InstancePtr)
	This function is the callback function for Access link qual request. More...

void	DpRxSs_AccessErrorCounterHandler (void *InstancePtr)
	This function is the callback function for Access prbs error count. More...

void	DpRxSs_CRCTestEventHandler (void *InstancePtr)
	This function is the callback function for Test CRC Event request. More...

u8	get_LineRate (void)
	This function returns current line rate. More...

Variables
lane_link_rate_struct	lane_link_table []

Function Documentation

void clk_wiz_locked ( void )

This function will check MMCM lock status This MMCM output will be used for Tx side video CLK.

This function to check MMCM lock status.

Returns: None

void detect_rx_video_and_startTx ( int * track_count1 )

This function detects incoming video and find out video parameters Based on the parameters, set up Tx and VDMA, then start Tx output.

Returns: None

References XDpTxSs::DpPtr, Vpg_StreamSrcConfigure(), Vpg_VidgenSetUserPattern(), XDpTxSs_Reset(), and XDpTxSs_Stop().

void DpPt_CustomWaitUs	(	void *	InstancePtr,
		u32	MicroSeconds
	)

This function is called when DisplayPort TX Subsystem core requires delay or sleep.

This function use h/w timer to count specific Microseconds.

It provides timer with predefined amount of loop iterations.

Parameters

InstancePtr is a pointer to the XDp instance.

Returns: None.

Note: Use the XDpTxSs_SetUserTimerHandler driver function to set this function as the handler custom delay/sleep.

void DpPt_HpdEventHandler ( void * InstancePtr )

This function takes care HPD event.

Returns: None.

Note: None.

References XDpTxSs::DpPtr, sink_power_cycle(), and XDpTxSs_IsConnected().

void DpPt_HpdPulseHandler ( void * InstancePtr )

This function takes care HPD pulse interrupt.

Returns: None.

Note: None.

References XDpTxSs::DpPtr.

void DpPt_LinkrateChgHandler ( void * InstancePtr )

This function sets link line rate.

Parameters

@return None.

Note: None.

References get_LineRate(), and PHY_Configuration_Tx().

int DpPt_SetupIntrSystem ( )

This function is sets up Interrupt system and start it.

Returns: None.

References XDpTxSs_DpIntrHandler().

void DpRxSs_AccessErrorCounterHandler ( void * InstancePtr )

This function is the callback function for Access prbs error count.

Parameters

InstancePtr is a pointer to the XDpRxSs instance.

Returns: None.

Note: None.

void DpRxSs_AccessLinkQualHandler ( void * InstancePtr )

This function is the callback function for Access link qual request.

Parameters

InstancePtr is a pointer to the XDpRxSs instance.

Returns: None.

Note: None.

References I2C_MCDP6000_ADDR.

void DpRxSs_CRCTestEventHandler ( void * InstancePtr )

This function is the callback function for Test CRC Event request.

Parameters

InstancePtr is a pointer to the XDpRxSs instance.

Returns: None.

Note: None.

void DpRxSs_ExtPacketHandler ( void * InstancePtr )

This function is the callback function for Generic Packet Handling of 32-Bytes payload.

Parameters

InstancePtr is a pointer to the XDpRxSs instance.

Returns: None.

Note: None.

void DpRxSs_InfoPacketHandler ( void * InstancePtr )

This function is the callback function for Info Packet Handling.

Parameters

InstancePtr is a pointer to the XDpRxSs instance.

Returns: None.

Note: None.

u8 get_LineRate ( void )

This function returns current line rate.

Parameters

None.

Returns: None.

Note: None.

References XDpTxSs::DpPtr.

void hpd_con ( )

This function is called when a Hot-Plug-Detect (HPD) event is received by the DisplayPort TX Subsystem core.

Parameters

InstancePtr is a pointer to the XDpTxSs instance.

Returns: None.

Note: Use the XDpTxSs_SetCallback driver function to set this function as the handler for HPD event.

References XDpTxSs::DpPtr, update_edid(), XDpTxSs_SetLaneCount(), and XDpTxSs_SetLinkRate().

void hpd_pulse_con ( )

This function is called when a Hot-Plug-Detect (HPD) pulse is received by the DisplayPort TX Subsystem core.

Parameters

InstancePtr is a pointer to the XDpTxSs instance.

Returns: None.

Note: Use the XDpTxSs_SetCallback driver function to set this function as the handler for HPD pulse.

References XDpTxSs::DpPtr, XDpTxSs_SetLaneCount(), and XDpTxSs_SetLinkRate().

void Print_ExtPkt ( )

This function is the callback function for Ext Packet Handling.

Parameters

InstancePtr is a pointer to the XDpRxSs instance.

Returns: None.

Note: None.

void Print_InfoPkt ( )

This function is the callback function for Info Packet Handling.

Parameters

InstancePtr is a pointer to the XDpRxSs instance.

Returns: None.

Note: None.

void reconfig_clkwiz	(	u32	clk_reg0,
		u32	clk_reg1,
		u32	clk_reg2
	)

sets the default drp values into the mmcm this ensures that mmcm is back to original state

Returns: None

References DpPt_CustomWaitUs().

void reset_clkwiz ( )

This function will reset Tx side MMCM.

Returns: None

void resetIp ( )

This function toggles HW reset line for all IP's.

Returns: None

void sink_power_cycle ( u32 power_down_time )

This function will send power down and power up command over AUX.

Returns: None

References DpPt_CustomWaitUs(), and XDpTxSs::DpPtr.

void start_tx	(	u8	line_rate,
		u8	lane_count,
		XVidC_VideoMode	res_table,
		u8	bpc,
		u8	pat,
		u8	pat_update
	)

This is for Tx only mode This function will start outputing internal video patern image Setup GT, DP, patern and generator.

Returns: None

References clk_wiz_locked(), DpPt_CustomWaitUs(), XDpTxSs::DpPtr, XDpTxSs_UsrOpt::NumOfStreams, sink_power_cycle(), XDpTxSs::UsrOpt, Vpg_StreamSrcConfigure(), Vpg_VidgenSetUserPattern(), XDpTxSs_UsrOpt::VtcAdjustBs, XDpTxSs::VtcPtr, XDpTxSs_CheckLinkStatus(), XDpTxSs_SetBpc(), XDpTxSs_SetLaneCount(), XDpTxSs_SetLinkRate(), XDpTxSs_SetVidMode(), and XDpTxSs_VtcSetup().

void switch_to_Tx_only	(	int *	track_switch,
		u8 *	pwr_dwn_x
	)

This function will be used when no incoming video at pass-through mode If no video, switching to internal patern generator.

Returns: None

References XDpTxSs::DpPtr, PHY_Configuration_Tx(), sink_power_cycle(), start_tx(), Vpg_StreamSrcConfigure(), Vpg_VidgenSetUserPattern(), XDpTxSs_Reset(), and XDpTxSs_Stop().

void update_edid ( )

This function will update and overwrite EDID color depth 10BPC will be changed to 8BPC due to design limitation.

Returns: None

Referenced by hpd_con().

void video_change_detect	(	u32 *	count_track,
		u32 *	rxMsamisc0_track,
		u32 *	bpc_track,
		u32 *	recv_clk_freq_track,
		float *	recv_frame_clk_track,
		u32 *	recv_frame_clk_int_track,
		int *	track_count
	)

This function will detect video resolution/frequency change Many GPUs won't re-train when only video res/freq change.

Application needs to know if it changed and need to detect new parameter. Based on the parameter, re-set and re-start VDAM and Tx

Returns: None

References XDpTxSs::DpPtr, Vpg_VidgenSetUserPattern(), and XDpTxSs_Stop().

int VideoFMC_Init ( void )

This function will detect video resolution/frequency change Many GPUs won't re-train when only video res/freq change.

Application needs to know if it changed and need to detect new parameter. Based on the parameter, re-set and re-start VDAM and Tx

Returns: None

References I2C_IDT8N49_ADDR, I2C_LMK03318_ADDR, I2C_MUX_ADDR, I2C_Scan(), I2C_VFMCEXP_0_ADDR, I2C_VFMCEXP_1_ADDR, IDT_8T49N24x_Init(), and TI_LMK03318_PowerDown().

Variable Documentation

lane_link_rate_struct lane_link_table[]

Initial value:

=
{
        {XDP_RX_OVER_LANE_COUNT_SET_1, XDP_RX_OVER_LINK_BW_SET_162GBPS},
        {XDP_RX_OVER_LANE_COUNT_SET_2, XDP_RX_OVER_LINK_BW_SET_162GBPS},
        {XDP_RX_OVER_LANE_COUNT_SET_4, XDP_RX_OVER_LINK_BW_SET_162GBPS},
        {XDP_RX_OVER_LANE_COUNT_SET_1, XDP_RX_OVER_LINK_BW_SET_270GBPS},
        {XDP_RX_OVER_LANE_COUNT_SET_2, XDP_RX_OVER_LINK_BW_SET_270GBPS},
        {XDP_RX_OVER_LANE_COUNT_SET_4, XDP_RX_OVER_LINK_BW_SET_270GBPS},
        {XDP_RX_OVER_LANE_COUNT_SET_1, XDP_RX_OVER_LINK_BW_SET_540GBPS},
        {XDP_RX_OVER_LANE_COUNT_SET_2, XDP_RX_OVER_LINK_BW_SET_540GBPS},
        {XDP_RX_OVER_LANE_COUNT_SET_4, XDP_RX_OVER_LINK_BW_SET_540GBPS},
        {XDP_RX_OVER_LANE_COUNT_SET_1, XDP_RX_OVER_LINK_BW_SET_810GBPS},
        {XDP_RX_OVER_LANE_COUNT_SET_2, XDP_RX_OVER_LINK_BW_SET_810GBPS},
        {XDP_RX_OVER_LANE_COUNT_SET_4, XDP_RX_OVER_LINK_BW_SET_810GBPS},
}

MODIFICATION HISTORY:

Ver Who Date Changes

1.00 KI 07/13/17 Initial release.

Overview

Functions

Variables

Function Documentation

Variable Documentation