xdppsu_selftest.c File Reference

Overview

This file contains a diagnostic self-test function for the XDpPsu driver.

It will check many of the DisplayPort TX's register values against the default reset values as a sanity-check that the core is ready to be used.

Note

None.

MODIFICATION HISTORY:

Ver   Who  Date     Changes



1.0   aad  01/17/17 Initial release.
1.1   aad  10/04/17 Removed not applicable registers

Functions
u32	XDpPsu_SelfTest (XDpPsu *InstancePtr)
	This function runs a self-test on the XDpPsu driver/device. More...

Variables
u32	ResetValues [XDPPSU_NUM_RESET_VALUES][2]
	This table contains the default values for the DisplayPort TX core's general usage registers. More...
u32	ResetValuesMsa [XDPPSU_NUM_MSA_RESET_VALUES][2]
	This table contains the default values for the DisplayPort TX core's main stream attribute (MSA) registers. More...

Function Documentation

u32 XDpPsu_SelfTest

(

XDpPsu *

InstancePtr

)

This function runs a self-test on the XDpPsu driver/device.

The sanity test checks whether or not all tested registers hold their default reset values.

Parameters

InstancePtr

is a pointer to the XDpPsu instance.

Returns

• XST_SUCCESS if the self-test passed - all tested registers hold their default reset values.
• XST_FAILURE otherwise.

Note

None.

References XDpPsu_Config::BaseAddr, XDpPsu::Config, ResetValues, ResetValuesMsa, and XDpPsu_ReadReg.

Referenced by DpPsu_SelfTestExample().

Variable Documentation

u32 ResetValues[XDPPSU_NUM_RESET_VALUES][2]

This table contains the default values for the DisplayPort TX core's general usage registers.

Referenced by XDpPsu_SelfTest().

u32 ResetValuesMsa[XDPPSU_NUM_MSA_RESET_VALUES][2]

Initial value:

=
{
        {XDPPSU_MAIN_STREAM_HTOTAL, 0},
        {XDPPSU_MAIN_STREAM_VTOTAL, 0},
        {XDPPSU_MAIN_STREAM_POLARITY, 0},
        {XDPPSU_MAIN_STREAM_HSWIDTH, 0},
        {XDPPSU_MAIN_STREAM_VSWIDTH, 0},
        {XDPPSU_MAIN_STREAM_HRES, 0},
        {XDPPSU_MAIN_STREAM_VRES, 0},
        {XDPPSU_MAIN_STREAM_HSTART, 0},
        {XDPPSU_MAIN_STREAM_VSTART, 0},
        {XDPPSU_MAIN_STREAM_MISC0, 0},
        {XDPPSU_MAIN_STREAM_MISC1, 0},
        {XDPPSU_M_VID, 0},
        {XDPPSU_TU_SIZE, 0x40},
        {XDPPSU_N_VID, 0},
        {XDPPSU_USER_PIXEL_WIDTH, 1},
        {XDPPSU_USER_DATA_COUNT_PER_LANE, 0},
        {XDPPSU_MIN_BYTES_PER_TU, 0},
        {XDPPSU_FRAC_BYTES_PER_TU, 0},
        {XDPPSU_INIT_WAIT, 0x20}
}

This table contains the default values for the DisplayPort TX core's main stream attribute (MSA) registers.

Referenced by XDpPsu_SelfTest().