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Cleanup ISR. 

git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@11519 35acf78f-673a-0410-8e92-d51de3d6d3f4
This commit is contained in:
isiora 2018-02-20 18:20:16 +00:00
parent 6497cd272a
commit a6d67787e4
1 changed files with 17 additions and 27 deletions
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28
os/hal/ports/SAMA/LLD/DMAv1/sama_xdmac.c
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@ -105,33 +105,23 @@ OSAL_IRQ_HANDLER(dmaHandler) {
/* Read Global Interrupt Status Register */ /* Read Global Interrupt Status Register */
gis = dmaGetGlobalInt(xdmac); gis = dmaGetGlobalInt(xdmac);
for (chan = 0; chan < XDMAC_CHANNELS; chan++) { for (chan = 0; gis && (chan < XDMAC_CHANNELS); chan++) {
sama_dma_channel_t *channel = &_sama_dma_channel_t[chan]; sama_dma_channel_t *channel = &_sama_dma_channel_t[chan];
bool pendingInt = FALSE;
if (!(gis & (0x1 << chan))) if (!(gis & (0x1 << chan)))
/* There is no pending interrupt for this channel */ /* There is no pending interrupt for this channel */
continue; continue;
gis &= ~(0x1 << chan);
if (channel->state == SAMA_DMA_FREE) /**
/* Channel is free */ * if channel interrupt is enabled and pending, and a callback exists,
continue; * execute it
*/
uint32_t cis = (dmaGetChannelInt(channel)) & ~(dmaGetChannelIntMask(channel)); uint32_t cis = dmaGetChannelInt(channel) &~ dmaGetChannelIntMask(channel);
if (cis & (XDMAC_CIS_BIS|XDMAC_CIS_LIS|XDMAC_CIS_DIS))
if (cis) { if (channel->dma_func)
pendingInt = TRUE;
}
if (cis & (XDMAC_CIS_LIS|XDMAC_CIS_DIS)) {
pendingInt = TRUE;
}
/* Executes callback */
if (pendingInt && channel->dma_func) {
channel->dma_func(channel->dma_param, cis); channel->dma_func(channel->dma_param, cis);
} }
}
aicAckInt(); aicAckInt();
OSAL_IRQ_EPILOGUE(); OSAL_IRQ_EPILOGUE();
} }