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[PATCH v2 2/2] bcm2835_dma: Re-initialize xlen in TD mode
From: |
Rene Stange |
Subject: |
[PATCH v2 2/2] bcm2835_dma: Re-initialize xlen in TD mode |
Date: |
Mon, 03 Feb 2020 16:40:51 +0100 |
TD (two dimensions) DMA mode did not work, because the xlen variable
has not been re-initialized before each additional ylen run through
in bcm2835_dma_update(), which has been fixed.
Signed-off-by: Rene Stange <address@hidden>
---
hw/dma/bcm2835_dma.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/hw/dma/bcm2835_dma.c b/hw/dma/bcm2835_dma.c
index 667d951a6f..ccff5ed55b 100644
--- a/hw/dma/bcm2835_dma.c
+++ b/hw/dma/bcm2835_dma.c
@@ -54,7 +54,7 @@
static void bcm2835_dma_update(BCM2835DMAState *s, unsigned c)
{
BCM2835DMAChan *ch = &s->chan[c];
- uint32_t data, xlen, ylen;
+ uint32_t data, xlen, xlen_td, ylen;
int16_t dst_stride, src_stride;
if (!(s->enable & (1 << c))) {
@@ -82,6 +82,7 @@ static void bcm2835_dma_update(BCM2835DMAState *s, unsigned c)
dst_stride = 0;
src_stride = 0;
}
+ xlen_td = xlen;
while (ylen != 0) {
/* Normal transfer mode */
@@ -117,6 +118,7 @@ static void bcm2835_dma_update(BCM2835DMAState *s, unsigned
c)
if (--ylen != 0) {
ch->source_ad += src_stride;
ch->dest_ad += dst_stride;
+ xlen = xlen_td;
}
}
ch->cs |= BCM2708_DMA_END;
--
2.16.4
- [PATCH v2 2/2] bcm2835_dma: Re-initialize xlen in TD mode,
Rene Stange <=