Introduction

The Display Subsystem (DSS) provides the logic to interface display peripherals. This is DSS driver documentation.

Sub Modules
	Dispay Hardware Include Layer

	Display Controller Driver

	Display Driver Configurations

	Display Pipe Driver

	Display SoC Config

Files
file	dss/v0/dss.h
	DSS Driver API/interface file. This is DSS's top level include for applications.

Data Structures
struct	Dss_InitParams
	DSS initialization parameters. More...

struct	Dss_ConfigPipelineParams
	Display pipeline config parameters. The test case execution happens based on values of this structure. More...

struct	Dss_InstObject
	Driver instance information. More...

struct	Dss_RegionFwlData
	Firewall data structure defining ID, start and end address. More...

struct	Dss_FirewallRegionConfig
	Firewall configuration structure. More...

struct	Dss_Object
	Test application data structure. More...

Functions
void	Dss_initParamsInit (Dss_InitParams *dssParams)
	Dss_InitParams structure init function. More...

int32_t	Dss_init (const Dss_InitParams *initParams)
	DSS initialization function. This function initializes the DSS hardware and drivers. This function should be called before calling any driver APIs and only once. More...

int32_t	Dss_deInit (void)
	DSS de-initialization function. This function un-initializes the DSS hardware and drivers. This function should be called during system shutdown if Dss_init() was called by the application. More...

Macros
#define	DSS_DISP_DRV_ID (FVID2_DSS_DRV_BASE + 0x00U)
	Display driver ID used at the time of FVID2 create. More...

#define	DSS_DCTRL_DRV_ID (FVID2_DSS_DRV_BASE + 0x01U)
	Display controller driver ID used at the time of FVID2 create. More...

#define	DSS_DISP_IOCTL_BASE (FVID2_DSS_DRV_IOCTL_BASE + 0x000U)
	IOCTL base address for the display driver IOCTLs. More...

#define	DSS_DCTRL_IOCTL_BASE (FVID2_DSS_DRV_IOCTL_BASE + 0x100U)
	IOCTL base address for the display controller driver IOCTLs. More...

#define	DSS_DISP_SOC_IOCTL_BASE (DSS_DISP_IOCTL_BASE + 0x40U)
	IOCTL base address for the SOC specific display driver IOCTLs. More...

#define	DSS_DCTRL_SOC_IOCTL_BASE (DSS_DCTRL_IOCTL_BASE + 0x40U)
	IOCTL base address for the SOC specific display controller driver IOCTLs. More...

Macro Definition Documentation

◆ DSS_DISP_DRV_ID

#define DSS_DISP_DRV_ID (FVID2_DSS_DRV_BASE + 0x00U)

Display driver ID used at the time of FVID2 create.

◆ DSS_DCTRL_DRV_ID

#define DSS_DCTRL_DRV_ID (FVID2_DSS_DRV_BASE + 0x01U)

Display controller driver ID used at the time of FVID2 create.

◆ DSS_DISP_IOCTL_BASE

#define DSS_DISP_IOCTL_BASE (FVID2_DSS_DRV_IOCTL_BASE + 0x000U)

IOCTL base address for the display driver IOCTLs.

◆ DSS_DCTRL_IOCTL_BASE

#define DSS_DCTRL_IOCTL_BASE (FVID2_DSS_DRV_IOCTL_BASE + 0x100U)

IOCTL base address for the display controller driver IOCTLs.

◆ DSS_DISP_SOC_IOCTL_BASE

#define DSS_DISP_SOC_IOCTL_BASE (DSS_DISP_IOCTL_BASE + 0x40U)

IOCTL base address for the SOC specific display driver IOCTLs.

◆ DSS_DCTRL_SOC_IOCTL_BASE

#define DSS_DCTRL_SOC_IOCTL_BASE (DSS_DCTRL_IOCTL_BASE + 0x40U)

IOCTL base address for the SOC specific display controller driver IOCTLs.

Function Documentation

◆ Dss_initParamsInit()

void Dss_initParamsInit ( Dss_InitParams * dssParams )

Dss_InitParams structure init function.

Parameters

dssParams Pointer to Dss_InitParams structure.

◆ Dss_init()

int32_t Dss_init ( const Dss_InitParams * initParams )

DSS initialization function. This function initializes the DSS hardware and drivers. This function should be called before calling any driver APIs and only once.

Parameters

initParams Pointer to a Dss_InitParams structure containing the DSS configuration

Returns: FVID2_SOK if successful, else suitable error code

◆ Dss_deInit()

int32_t Dss_deInit ( void )

DSS de-initialization function. This function un-initializes the DSS hardware and drivers. This function should be called during system shutdown if Dss_init() was called by the application.

Returns: FVID2_SOK if successful, else suitable error code