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dw-dma: enable DW_USE_HW_LLI mode for APL/CNL. 

Fix the dma not stop issue for using Hardware Link List mode.
Only enable it for APL/CNL at the moment.

Signed-off-by: Keyon Jie <yang.jie@linux.intel.com>
This commit is contained in:
Keyon Jie 2018-02-08 20:48:13 +08:00 committed by Liam Girdwood
parent 3600a8eab6
commit 616f1e57ef
1 changed files with 10 additions and 1 deletions
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11
src/drivers/dw-dma.c
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@ -236,8 +236,12 @@
#define trace_dma_error(__e) trace_error(TRACE_CLASS_DMA, __e)
#define tracev_dma(__e) tracev_event(TRACE_CLASS_DMA, __e)
/* HW Linked list support currently disabled - needs debug for missing IRQs !!! */
/* HW Linked list support, only enabled for APL/CNL at the moment */
#if defined CONFIG_APOLLOLAKE || defined CONFIG_CANNONLAKE
#define DW_USE_HW_LLI 1
#else
#define DW_USE_HW_LLI 0
#endif
/* number of tries to wait for reset */
#define DW_DMA_CFG_TRIES 10000
@ -922,6 +926,11 @@ static void dw_dma_irq_handler(void *data)
next.size = DMA_RELOAD_LLI;
p->chan[i].cb(p->chan[i].cb_data,
DMA_IRQ_TYPE_BLOCK, &next);
if (next.size == DMA_RELOAD_END) {
trace_dma("LSo");
/* disable channel, finished */
dw_write(dma, DW_DMA_CHAN_EN, CHAN_DISABLE(i));
}
}
#endif
/* end of a transfer */