Author: br
Date: Sun Feb 16 19:21:44 2014
New Revision: 261987
URL: http://svnweb.freebsd.org/changeset/base/261987
Log:
- Decrease buffer size.
- Handle eDMA interrupt on running channel only.
Modified:
head/sys/arm/freescale/vybrid/vf_sai.c
Modified: head/sys/arm/freescale/vybrid/vf_sai.c
==============================================================================
--- head/sys/arm/freescale/vybrid/vf_sai.c Sun Feb 16 19:20:13 2014
(r261986)
+++ head/sys/arm/freescale/vybrid/vf_sai.c Sun Feb 16 19:21:44 2014
(r261987)
@@ -396,7 +396,8 @@ sai_dma_intr(void *arg, int chn)
if (sc->pos >= sc->dma_size)
sc->pos -= sc->dma_size;
- chn_intr(ch->channel);
+ if (ch->run)
+ chn_intr(ch->channel);
return (0);
}
@@ -492,7 +493,7 @@ setup_dma(struct sc_pcminfo *scp)
tcd->nbytes = 64;
tcd->nmajor = 512;
- tcd->smod = 18; /* dma_size range */
+ tcd->smod = 17; /* dma_size range */
tcd->dmod = 0;
tcd->esg = 0;
tcd->soff = 0x4;
@@ -523,6 +524,7 @@ saichan_trigger(kobj_t obj, void *data,
#if 0
device_printf(scp->dev, "trigger start\n");
#endif
+ ch->run = 1;
break;
case PCMTRIG_STOP:
@@ -530,6 +532,7 @@ saichan_trigger(kobj_t obj, void *data,
#if 0
device_printf(scp->dev, "trigger stop or abort\n");
#endif
+ ch->run = 0;
break;
}
@@ -720,7 +723,7 @@ sai_attach(device_t dev)
scp->dev = dev;
/* DMA */
- sc->dma_size = 262144;
+ sc->dma_size = 131072;
/*
* Must use dma_size boundary as modulo feature required.
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