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lxdream.org :: lxdream/test/testdisp.c
lxdream 0.9.1
released Jun 29
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filename test/testdisp.c
changeset 267:e59e36950761
prev263:6f641270b2aa
next272:fb6be85235e8
author nkeynes
date Sat Jan 06 04:08:11 2007 +0000 (14 years ago)
permissions -rw-r--r--
last change Add test for NTSC timing, retrace/scanline events
file annotate diff log raw
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/**
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 * $Id: testdisp.c,v 1.2 2007-01-06 04:08:11 nkeynes Exp $
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 *
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 * Display (2D) tests. Mainly tests video timing / sync (obviously
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 * it can't actually test display output since there's no way of
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 * reading the results)
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 *
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 * These tests use TMU2 to determine absolute time
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 * Copyright (c) 2006 Nathan Keynes.
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 *
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 * This program is free software; you can redistribute it and/or modify
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 * it under the terms of the GNU General Public License as published by
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 * the Free Software Foundation; either version 2 of the License, or
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 * (at your option) any later version.
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 *
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 * This program is distributed in the hope that it will be useful,
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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 * GNU General Public License for more details.
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 */
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#include <stdlib.h>
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#include <stdio.h>
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#include "lib.h"
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#include "asic.h"
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#define PVR_BASE 0xA05F8000
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#define BORDERCOL   (PVR_BASE+0x040)
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#define DISPCFG1 (PVR_BASE+0x044)
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#define DISPADDR1 (PVR_BASE+0x050)
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#define DISPADDR2 (PVR_BASE+0x054)
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#define DISPSIZE (PVR_BASE+0x05C)
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#define HPOSEVENT (PVR_BASE+0x0C8)
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#define VPOSEVENT (PVR_BASE+0x0CC)
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#define DISPCFG2 (PVR_BASE+0x0D0)
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#define HBORDER (PVR_BASE+0x0D4)
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#define DISPTOTAL (PVR_BASE+0x0D8)
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#define VBORDER (PVR_BASE+0x0DC)
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#define SYNCTIME (PVR_BASE+0x0E0)
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#define DISPCFG3 (PVR_BASE+0x0E8)
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#define HPOS     (PVR_BASE+0x0EC)
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#define VPOS     (PVR_BASE+0x0F0)
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#define SYNCSTAT (PVR_BASE+0x10C)
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#define MAX_FRAME_WAIT 0x50000
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#define EVENT_RETRACE 5
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#define WAIT_LINE( a ) if( wait_line(a) != 0 ) { fprintf(stderr, "Timeout at %s:%d:%s() waiting for line %d\n", __FILE__, __LINE__, __func__, a ); return -1; }
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#define WAIT_LASTLINE( a ) if( wait_lastline(a) != 0 ) { fprintf(stderr, "Last line check failed at %s:%d:%s() waiting for line %d\n", __FILE__, __LINE__, __func__, a ); return -1; }
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void dump_display_regs( FILE *out )
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{
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    fprintf( out, "%08X DISPCFG1:  %08X\n", DISPCFG1, long_read(DISPCFG1) );
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    fprintf( out, "%08X DISPCFG2:  %08X\n", DISPCFG2, long_read(DISPCFG2) );
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    fprintf( out, "%08X DISPCFG3:  %08X\n", DISPCFG3, long_read(DISPCFG3) );
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    fprintf( out, "%08X DISPSIZE:  %08X\n", DISPSIZE, long_read(DISPSIZE) );
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    fprintf( out, "%08X HBORDER:   %08X\n", HBORDER, long_read(HBORDER) );
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    fprintf( out, "%08X VBORDER:   %08X\n", VBORDER, long_read(VBORDER) );
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    fprintf( out, "%08X SYNCTIME:  %08X\n", SYNCTIME, long_read(SYNCTIME) );
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    fprintf( out, "%08X DISPTOTAL: %08X\n", DISPTOTAL, long_read(DISPTOTAL) );
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    fprintf( out, "%08X DISPADDR1: %08X\n", DISPADDR1, long_read(DISPADDR1) );
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    fprintf( out, "%08X DISPADDR2: %08X\n", DISPADDR2, long_read(DISPADDR2) );
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    fprintf( out, "%08X HPOSEVENT: %08X\n", HPOSEVENT, long_read(HPOSEVENT) );
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    fprintf( out, "%08X VPOSEVENT: %08X\n", VPOSEVENT, long_read(VPOSEVENT) );
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    fprintf( out, "%08X HPOS:      %08X\n", HPOS, long_read(HPOS) );
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    fprintf( out, "%08X VPOS:      %08X\n", VPOS, long_read(VPOS) );
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    fprintf( out, "%08X SYNCSTAT:  %08X\n", SYNCSTAT, long_read(SYNCSTAT) );
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}
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uint32_t pal_settings[] = {
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    DISPCFG1, 0x00000001,
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    DISPCFG2, 0x00000150,
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    DISPCFG3, 0x00160000,
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    DISPSIZE, 0x1413BD3F,
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    HBORDER, 0x008D034B,
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    VBORDER, 0x00120102,
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    DISPTOTAL, 0x0270035F,
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    SYNCTIME, 0x07D6A53F,
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    HPOS, 0x000000A4,
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    VPOS, 0x00120012,
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    VPOSEVENT, 0x00150136,
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    0, 0 };
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uint32_t ntsc_settings[] = {
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    DISPCFG1, 0x00000001,
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    DISPCFG2, 0x00000150,
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    DISPCFG3, 0x00160000,
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    DISPSIZE, 0x1413BD3F,
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    HBORDER, 0x007e0345,
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    VBORDER, 0x00120102,
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    DISPTOTAL, 0x020C0359,
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    SYNCTIME, 0x07d6c63f,
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    HPOS, 0x000000A4,
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    VPOS, 0x00120012,
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    VPOSEVENT, 0x001501FE,
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    0, 0 };
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struct timing {
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    uint32_t interlaced;
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    uint32_t total_lines;
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    uint32_t vsync_lines;
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    uint32_t line_time_us;
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    uint32_t field_time_us;
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    uint32_t hsync_width_us;
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    uint32_t front_porch_us;
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    uint32_t back_porch_us;
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};
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struct timing ntsc_timing = { 1, 525, 6, 31, 16641, 4, 12, 4 };
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struct timing pal_timing = { 1, 625, 5, 31, 19949, 4, 12, 4 };
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void apply_display_settings( uint32_t *regs ) {
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    int i;
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    for( i=0; regs[i] != 0; i+=2 ) {
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	long_write( regs[i], regs[i+1] );
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    }
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}
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/**
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 * Wait until the given line is being displayed (ie is set in the syncstat
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 * register).
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 * @return 0 if the line is reached before timeout, otherwise -1.
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 */
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int wait_line( int line )
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{
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    int i;
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    for( i=0; i< MAX_FRAME_WAIT; i++ ) {
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	uint32_t sync = long_read(SYNCSTAT) & 0x03FF;
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	if( sync == line ) {
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	    return 0;
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	}
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    }
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    return -1;
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}
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/**
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 * Wait until just after the last line of the frame is being displayed (according
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 * to the syncstat register). After this function the current line will be 0.
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 * @return 0 if the last line is the given line, otherwise -1.
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 */
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int wait_lastline( int line )
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{
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    int lastline = 0, i;
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    for( i=0; i< MAX_FRAME_WAIT; i++ ) {
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	uint32_t sync = long_read(SYNCSTAT) & 0x03FF;
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	if( sync == 0 && lastline != 0 ) {
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	    CHECK_IEQUALS( line, lastline );
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	    return 0;
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	}
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	lastline = sync;
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    }
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    fprintf( stderr, "Timeout waiting for line %d\n", line );
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    return -1;
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}
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int check_events_interlaced( ) 
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{
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    uint32_t status1, status2, status3;
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    int i;
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    for( i=0; i< MAX_FRAME_WAIT; i++ ) {
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	status1 = long_read(SYNCSTAT) & 0x07FF;
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	if( status1 == 0x04FF ) {
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	    break;
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	}
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    }    
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    asic_clear();
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    asic_wait(EVENT_RETRACE);
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    status1 = long_read(SYNCSTAT);
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    asic_clear();
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    asic_wait(EVENT_SCANLINE2);
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    status2 = long_read(SYNCSTAT);
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    asic_clear();
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    asic_wait(EVENT_SCANLINE1);
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    status3 = long_read(SYNCSTAT);
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    CHECK_IEQUALS( 0x0000, status1 );
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    CHECK_IEQUALS( 0x202A, status2 );
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    CHECK_IEQUALS( 0x226C, status3 );
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    for( i=0; i< MAX_FRAME_WAIT; i++ ) {
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	status1 = long_read(SYNCSTAT) & 0x07FF;
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	if( status1 == 0x00FF ) {
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	    break;
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	}
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    }    
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    asic_clear();
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    asic_wait(EVENT_RETRACE);
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    status1 = long_read(SYNCSTAT);
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    asic_clear();
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    asic_wait(EVENT_SCANLINE2);
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    status2 = long_read(SYNCSTAT);
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    asic_clear();
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    asic_wait(EVENT_SCANLINE1);
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    status3 = long_read(SYNCSTAT);
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    fprintf( stderr, "%08X, %08X, %08X\n", status1, status2, status3 );
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    CHECK_IEQUALS( 0x1400, status1 );
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    CHECK_IEQUALS( 0x242B, status2 );
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    CHECK_IEQUALS( 0x266D, status3 );
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    return 0;
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}
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int check_timing( struct timing *t ) {
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    uint32_t line_time, field_time;
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    uint32_t stat;
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    uint32_t last_line = t->total_lines - 1;
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    int i;
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    WAIT_LINE( t->total_lines - 1 );
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    asic_clear();
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    for( i=0; i< MAX_FRAME_WAIT; i++ ) {
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	stat = long_read(SYNCSTAT) & 0x07FF;
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	if( stat == 0 ) {
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	    break;
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	} else if( (stat & 0x03FF) != last_line ) {
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	    asic_clear();
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	    last_line = stat & 0x03FF;
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	}
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    }
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    if( stat != 0 ) {
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	fprintf( stderr, "Timeout waiting for line 0 field 0\n" );
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	return -1;
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    }
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    timer_start();
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    asic_clear();
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    if( asic_check( EVENT_RETRACE ) != 0 ) {
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	fprintf( stderr, "Failed to clear retrace event ?\n" );
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	return -1;
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    }
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    CHECK_IEQUALS( stat, 0 ); /* VSYNC, HSYNC, no display */
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    WAIT_LINE(1);
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    line_time = timer_gettime_us();
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    WAIT_LASTLINE(t->total_lines-1);
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    field_time = timer_gettime_us();
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    if( line_time != t->line_time_us ||
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	field_time != t->field_time_us ) {
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	fprintf( stderr, "Assertion failed: Expected Timing %d,%d but was %d,%d\n",
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		 t->line_time_us, t->field_time_us, line_time, field_time );
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	return -1;
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    }
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    return 0;
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}
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int test_ntsc_timing() {
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    apply_display_settings( ntsc_settings );
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    //    check_events_interlaced();
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    asic_clear();
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    uint32_t result = check_timing( &ntsc_timing );
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    dump_display_regs( stdout );
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    return result;
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}
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int test_pal_timing() 
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{
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    uint32_t line_time, field_time;
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    /* Set PAL display mode */
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    apply_display_settings( pal_settings );
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    check_events_interlaced();
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    asic_clear();
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    uint32_t result = check_timing( &pal_timing );
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    dump_display_regs( stdout );
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    return result;
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}
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/********************************* Main **************************************/
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typedef int (*test_func_t)();
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test_func_t test_fns[] = { test_ntsc_timing, test_pal_timing,
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			   NULL };
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int main() 
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{
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    return run_tests( test_fns );
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}
.