Introduction

The Display Subsystem (DSS) provides the logic to interface display peripherals.

Sub Modules
	DSS Common Hardware Layer

	DSS Overlay Hardware Layer

	DSS Video Pipe Hardware Layer

	DSS Video Port Hardware Layer

Files
file	csl_dssTop.h
	DSS top level hardware interface file. This can be used across sub components of DSS.

Data Structures
struct	CSL_DssCscCoeff
	Structure containing coefficients for Color Space Conversion. More...

struct	CSL_DssSafetyChkCfg
	Configuration for doing safety checks. More...

Functions
static void	CSL_dssCscCoeffInit (CSL_DssCscCoeff *cscCoeff)
	CSL_DssCscCoeff structure init function. More...

static void	CSL_dssSafetyChkCfgInit (CSL_DssSafetyChkCfg *safetyCfg)
	CSL_DssSafetyChkCfg structure init function. More...

Macros
#define	CSL_DSS_NUM_LUT_ENTRIES ((uint32_t) 256U)
	Number of entries for CLUT/Gamma Correction. More...

#define	CSL_DSS_MODULE_INVALID ((uint32_t) 0xFFU)
	Invalid Module Id for DSS modules. More...

DSS Video Pipeline Type
To distinguish between VID (with scaler) and VIDL (without scaler)
#define	CSL_DSS_VID_PIPE_TYPE_VID ((uint32_t) 0x0)
	Video Pipe is of type VID. More...

#define	CSL_DSS_VID_PIPE_TYPE_VIDL ((uint32_t) 0x1)
	Video Pipe is of type VIDL. More...

DSS Common Region Id
Id for different Common Regions
#define	CSL_DSS_COMM_REG_ID_0 ((uint32_t) 0x0U)
	Common Region 0. More...

#define	CSL_DSS_COMM_REG_ID_1 ((uint32_t) 0x1U)
	Common Region 1. More...

#define	CSL_DSS_COMM_REG_ID_MAX ((uint32_t) 0x2U)
	Common Region Max Id. More...

DSS Video Pipeline Id
Id for different Video Pipelines
#define	CSL_DSS_VID_PIPE_ID_VID1 ((uint32_t) 0x0U)
	Video Pipeline 1. More...

#define	CSL_DSS_VID_PIPE_ID_VIDL1 ((uint32_t) 0x1U)
	Video Lite Pipeline 1. More...

#define	CSL_DSS_VID_PIPE_ID_MAX ((uint32_t) 0x2U)
	Video Pipeline Max Id. More...

#define	CSL_DSS_VID_PIPE_ID_INVALID ((uint32_t) 0xFFU)
	Video Pipeline invalid. More...

DSS Overlay Id
Id for DSS Overlays
#define	CSL_DSS_OVERLAY_ID_1 ((uint32_t) 0x0U)
	Overlay 1. More...

#define	CSL_DSS_OVERLAY_ID_2 ((uint32_t) 0x1U)
	Overlay 2. More...

#define	CSL_DSS_OVERLAY_ID_MAX ((uint32_t) 0x2U)
	Overlay Max Id. More...

DSS Video Port Id
Id for DSS Video Ports
#define	CSL_DSS_VP_ID_1 ((uint32_t) 0x0U)
	Video Port 1. More...

#define	CSL_DSS_VP_ID_2 ((uint32_t) 0x1U)
	Video Port 2. More...

#define	CSL_DSS_VP_ID_MAX ((uint32_t) 0x2U)
	Video Port Max Id. More...

DSS Video Port Id Mask
Mask for DSS Video Ports
#define	CSL_DSS_VP_ID_1_MASK ((uint32_t) 0x1U)
	Video Port 1. More...

#define	CSL_DSS_VP_ID_2_MASK ((uint32_t) 0x2U)
	Video Port 2. More...

DSS CSC Range
DSS Color Space Conversion range setting
#define	CSL_DSS_CSC_RANGE_LIMITED ((uint32_t) 0x0U)
	Limited range selected. More...

#define	CSL_DSS_CSC_RANGE_FULL ((uint32_t) 0x1U)
	Full range selected. More...

#define	CSL_DSS_CSC_RANGE_CUSTOM ((uint32_t) 0x2U)
	Custom range selected. More...

DSS Safety Check Mode
Mode of operation of the safety check module
#define	CSL_DSS_SAFETY_CHK_FRAME_FREEZE_DETECT ((uint32_t) CSL_DSS_VID_SAFETY_ATTRIBUTES_CAPTUREMODE_VAL_FRAMEFREEZE)
	Frame freeze detect enabled. More...

#define	CSL_DSS_SAFETY_CHK_DATA_INTEGRITY ((uint32_t) CSL_DSS_VID_SAFETY_ATTRIBUTES_CAPTUREMODE_VAL_DATACHECK)
	Data correctness check enabled. More...

DSS Safety Check Frame Skip
Indicates which frames to be skipped while doing safety check
#define	CSL_DSS_SAFETY_CHK_FRAME_SKIP_NO ((uint32_t) CSL_DSS_VID_SAFETY_ATTRIBUTES_FRAMESKIP_VAL_DISABLE)
	No frames are skipped. More...

#define	CSL_DSS_SAFETY_CHK_FRAME_SKIP_EVEN ((uint32_t) CSL_DSS_VID_SAFETY_ATTRIBUTES_FRAMESKIP_VAL_EVEN)
	Even Frames are skipped starting from second frame after enable. More...

#define	CSL_DSS_SAFETY_CHK_FRAME_SKIP_ODD ((uint32_t) CSL_DSS_VID_SAFETY_ATTRIBUTES_FRAMESKIP_VAL_ODD)
	Odd Frames are skipped starting from first frame after enable. More...

Macro Definition Documentation

◆ CSL_DSS_VID_PIPE_TYPE_VID

#define CSL_DSS_VID_PIPE_TYPE_VID ((uint32_t) 0x0)

Video Pipe is of type VID.

◆ CSL_DSS_VID_PIPE_TYPE_VIDL

#define CSL_DSS_VID_PIPE_TYPE_VIDL ((uint32_t) 0x1)

Video Pipe is of type VIDL.

◆ CSL_DSS_COMM_REG_ID_0

#define CSL_DSS_COMM_REG_ID_0 ((uint32_t) 0x0U)

Common Region 0.

◆ CSL_DSS_COMM_REG_ID_1

#define CSL_DSS_COMM_REG_ID_1 ((uint32_t) 0x1U)

Common Region 1.

◆ CSL_DSS_COMM_REG_ID_MAX

#define CSL_DSS_COMM_REG_ID_MAX ((uint32_t) 0x2U)

Common Region Max Id.

◆ CSL_DSS_VID_PIPE_ID_VID1

#define CSL_DSS_VID_PIPE_ID_VID1 ((uint32_t) 0x0U)

Video Pipeline 1.

◆ CSL_DSS_VID_PIPE_ID_VIDL1

#define CSL_DSS_VID_PIPE_ID_VIDL1 ((uint32_t) 0x1U)

Video Lite Pipeline 1.

◆ CSL_DSS_VID_PIPE_ID_MAX

#define CSL_DSS_VID_PIPE_ID_MAX ((uint32_t) 0x2U)

Video Pipeline Max Id.

◆ CSL_DSS_VID_PIPE_ID_INVALID

#define CSL_DSS_VID_PIPE_ID_INVALID ((uint32_t) 0xFFU)

Video Pipeline invalid.

◆ CSL_DSS_OVERLAY_ID_1

#define CSL_DSS_OVERLAY_ID_1 ((uint32_t) 0x0U)

Overlay 1.

◆ CSL_DSS_OVERLAY_ID_2

#define CSL_DSS_OVERLAY_ID_2 ((uint32_t) 0x1U)

Overlay 2.

◆ CSL_DSS_OVERLAY_ID_MAX

#define CSL_DSS_OVERLAY_ID_MAX ((uint32_t) 0x2U)

Overlay Max Id.

◆ CSL_DSS_VP_ID_1

#define CSL_DSS_VP_ID_1 ((uint32_t) 0x0U)

Video Port 1.

◆ CSL_DSS_VP_ID_2

#define CSL_DSS_VP_ID_2 ((uint32_t) 0x1U)

Video Port 2.

◆ CSL_DSS_VP_ID_MAX

#define CSL_DSS_VP_ID_MAX ((uint32_t) 0x2U)

Video Port Max Id.

◆ CSL_DSS_VP_ID_1_MASK

#define CSL_DSS_VP_ID_1_MASK ((uint32_t) 0x1U)

Video Port 1.

◆ CSL_DSS_VP_ID_2_MASK

#define CSL_DSS_VP_ID_2_MASK ((uint32_t) 0x2U)

Video Port 2.

◆ CSL_DSS_CSC_RANGE_LIMITED

#define CSL_DSS_CSC_RANGE_LIMITED ((uint32_t) 0x0U)

Limited range selected.

◆ CSL_DSS_CSC_RANGE_FULL

#define CSL_DSS_CSC_RANGE_FULL ((uint32_t) 0x1U)

Full range selected.

◆ CSL_DSS_CSC_RANGE_CUSTOM

#define CSL_DSS_CSC_RANGE_CUSTOM ((uint32_t) 0x2U)

Custom range selected.

◆ CSL_DSS_SAFETY_CHK_FRAME_FREEZE_DETECT

#define CSL_DSS_SAFETY_CHK_FRAME_FREEZE_DETECT ((uint32_t) CSL_DSS_VID_SAFETY_ATTRIBUTES_CAPTUREMODE_VAL_FRAMEFREEZE)

Frame freeze detect enabled.

◆ CSL_DSS_SAFETY_CHK_DATA_INTEGRITY

#define CSL_DSS_SAFETY_CHK_DATA_INTEGRITY ((uint32_t) CSL_DSS_VID_SAFETY_ATTRIBUTES_CAPTUREMODE_VAL_DATACHECK)

Data correctness check enabled.

◆ CSL_DSS_SAFETY_CHK_FRAME_SKIP_NO

#define CSL_DSS_SAFETY_CHK_FRAME_SKIP_NO ((uint32_t) CSL_DSS_VID_SAFETY_ATTRIBUTES_FRAMESKIP_VAL_DISABLE)

No frames are skipped.

◆ CSL_DSS_SAFETY_CHK_FRAME_SKIP_EVEN

#define CSL_DSS_SAFETY_CHK_FRAME_SKIP_EVEN ((uint32_t) CSL_DSS_VID_SAFETY_ATTRIBUTES_FRAMESKIP_VAL_EVEN)

Even Frames are skipped starting from second frame after enable.

◆ CSL_DSS_SAFETY_CHK_FRAME_SKIP_ODD

#define CSL_DSS_SAFETY_CHK_FRAME_SKIP_ODD ((uint32_t) CSL_DSS_VID_SAFETY_ATTRIBUTES_FRAMESKIP_VAL_ODD)

Odd Frames are skipped starting from first frame after enable.

◆ CSL_DSS_NUM_LUT_ENTRIES

#define CSL_DSS_NUM_LUT_ENTRIES ((uint32_t) 256U)

Number of entries for CLUT/Gamma Correction.

◆ CSL_DSS_MODULE_INVALID

#define CSL_DSS_MODULE_INVALID ((uint32_t) 0xFFU)

Invalid Module Id for DSS modules.

Function Documentation

◆ CSL_dssCscCoeffInit()

static void CSL_dssCscCoeffInit ( CSL_DssCscCoeff * cscCoeff )

inlinestatic

CSL_DssCscCoeff structure init function.

Parameters

cscCoeff Pointer to CSL_DssCscCoeff structure

◆ CSL_dssSafetyChkCfgInit()

static void CSL_dssSafetyChkCfgInit ( CSL_DssSafetyChkCfg * safetyCfg )

inlinestatic

CSL_DssSafetyChkCfg structure init function.

Parameters

safetyCfg Pointer to CSL_DssSafetyChkCfg structure

Introduction

Sub Modules

Files

Data Structures

Functions

Macros

DSS Video Pipeline Type

DSS Common Region Id

DSS Video Pipeline Id

DSS Overlay Id

DSS Video Port Id

DSS Video Port Id Mask

DSS CSC Range

DSS Safety Check Mode

DSS Safety Check Frame Skip