dppt.h File Reference

Overview

This file contains functions to configure Video Pattern Generator core.

MODIFICATION HISTORY:

Ver   Who    Date     Changes



1.00  YB    07/01/15 Initial release.

MODIFICATION HISTORY:

Ver   Who    Date     Changes



1.00  KI    07/13/17 Initial release.

Functions
int	DpPt_SetupIntrSystem ()
	This function is sets up Interrupt system and start it. More...
void	DpPt_HpdEventHandler (void *InstancePtr)
	This function takes care HPD event. 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...
u8	get_LineRate (void)
	This function returns current line rate. More...
void	DpRxSs_AccessLaneSetHandler (void *InstancePtr)
	This function is the callback function for Access lane set request. 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...
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	DpPt_CustomWaitUs (void *InstancePtr, u32 MicroSeconds)
	This function use h/w timer to count specific Microseconds. 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	hpd_pulse_con ()
	This function is called when a Hot-Plug-Detect (HPD) pulse is received by the DisplayPort TX Subsystem core. 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...
void	reset_clkwiz ()
	This function will reset Tx side MMCM. More...
void	clk_wiz_locked ()
	This function to check MMCM lock status. More...
u8	i2c_read_dp141 (u32 I2CBaseAddress, u8 I2CSlaveAddress, u16 RegisterAddress)
	This function reads DP141 VFMC- IIC. 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	I2C_Scan (u32 BaseAddress)
	This function scans VFMC- IIC. 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	Vpg_Audio_start (void)
	This function starts audio pattern generator. More...
void	Vpg_Audio_stop ()
	This function stops audio pattern generator. More...
void	resetIp ()
	This function toggles HW reset line for all IP's. 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	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...

Function Documentation

void clk_wiz_locked

(

void

)

This function to check MMCM lock status.

Parameters

None.

Returns

None.

Note

None.

This function to check MMCM lock status.

Returns

None

Referenced by start_tx().

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 use h/w timer to count specific Microseconds.

Parameters

pointer	to timer
MicroSeconds	to wait

Returns

None.

Note

None.

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.

Referenced by DpTxSs_SetupIntrSystem(), reconfig_clkwiz(), sink_power_cycle(), and start_tx().

void DpPt_HpdEventHandler

(

void *

InstancePtr

)

This function takes care HPD event.

Returns

None.

Note

None.

References XDpTxSs::DpPtr, sink_power_down(), sink_power_up(), and XDpTxSs_IsConnected().

Referenced by DpTxSs_SetupIntrSystem().

void DpPt_HpdPulseHandler

(

void *

InstancePtr

)

This function takes care HPD pulse interrupt.

Returns

None.

Note

None.

References XDpTxSs::DpPtr.

Referenced by DpTxSs_SetupIntrSystem().

void DpPt_LinkrateChgHandler

(

void *

InstancePtr

)

This function sets link line rate.

Parameters

@return

None.

Note

None.

References get_LineRate(), and set_vphy().

Referenced by DpTxSs_SetupIntrSystem().

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_AccessLaneSetHandler

(

void *

InstancePtr

)

This function is the callback function for Access lane set request.

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.

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().

u8 i2c_read_dp141	(	u32	I2CBaseAddress,
		u8	I2CSlaveAddress,
		u16	RegisterAddress
	)

This function reads DP141 VFMC- IIC.

Parameters

None.

Returns

None.

Note

None.

void I2C_Scan

(

u32

BaseAddress

)

This function scans VFMC- IIC.

Parameters

None.

Returns

None.

Note

None.

Referenced by VideoFMC_Init().

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 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

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

Parameters

None.

Returns

None.

Note

None.

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

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

Parameters

None.

Returns

None.

Note

None.

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

void Vpg_Audio_start

(

void

)

This function starts audio pattern generator.

Returns

None.

Note

None.

void Vpg_Audio_stop

(

void

)

This function stops audio pattern generator.

Returns

None.

Note

None.