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the chip wants all data we send with 64bit padding, no matter what padding 

individual scanlines have so we send an extra 0 when we have to.
This commit is contained in:
macallan 2006-09-27 06:39:38 +00:00
parent 37b5f548a5
commit a2120a92a7
1 changed files with 16 additions and 9 deletions
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25
sys/dev/pci/chipsfb.c
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@ -1,4 +1,4 @@
/* $NetBSD: chipsfb.c,v 1.2 2006/09/27 05:19:23 macallan Exp $ */
/* $NetBSD: chipsfb.c,v 1.3 2006/09/27 06:39:38 macallan Exp $ */
/*
* Copyright (c) 2006 Michael Lorenz
@ -32,7 +32,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: chipsfb.c,v 1.2 2006/09/27 05:19:23 macallan Exp $");
__KERNEL_RCSID(0, "$NetBSD: chipsfb.c,v 1.3 2006/09/27 06:39:38 macallan Exp $");
#include <sys/param.h>
#include <sys/systm.h>
@ -242,10 +242,17 @@ static void
chipsfb_wait_idle(struct chipsfb_softc *sc)
{
#ifdef CHIPSFB_DEBUG
chipsfb_write32(sc, CT_OFF_FB + (800 * 598) - 4, 0);
#endif
/* spin until the blitter is idle */
while ((chipsfb_read32(sc, CT_BLT_CONTROL) & BLT_IS_BUSY) != 0) {
delay(1);
}
#ifdef CHIPSFB_DEBUG
chipsfb_write32(sc, CT_OFF_FB + (800 * 598) - 4, 0xffffffff);
#endif
}
static int
@ -778,15 +785,15 @@ chipsfb_feed(struct chipsfb_softc *sc, int count, uint8_t *data)
} else
shift += 8;
}
if (shift != 0) {
chipsfb_write32(sc, CT_OFF_DATA, latch);
} else {
/*
* sometimes the chip just sits here waiting for more data -
* sending one more word gets it going again
*/
chipsfb_write32(sc, CT_OFF_DATA, 0);
}
/* apparently the chip wants 64bit-aligned data or it won't go idle */
if ((count + 3) & 0x04) {
chipsfb_write32(sc, CT_OFF_DATA, 0);
}
#ifdef CHIPSFB_WAIT
chipsfb_wait_idle(sc);
#endif