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dmaengine: sirf: Add device_slave_caps interface

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this patch adds device_slave_caps() callback as SiRF SoC sound drivers
depend on it.

Signed-off-by: Rongjun Ying <rongjun.ying@csr.com>
Signed-off-by: Barry Song <Barry.Song@csr.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
This commit is contained in:
Rongjun Ying 2013-12-23 20:19:21 +08:00 committed by Vinod Koul
parent 0ca583a239
commit ba07d812f5
1 changed files with 20 additions and 0 deletions
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20
drivers/dma/sirf-dma.c
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@ -640,6 +640,25 @@ bool sirfsoc_dma_filter_id(struct dma_chan *chan, void *chan_id)
}
EXPORT_SYMBOL(sirfsoc_dma_filter_id);
#define SIRFSOC_DMA_BUSWIDTHS \
(BIT(DMA_SLAVE_BUSWIDTH_UNDEFINED) | \
BIT(DMA_SLAVE_BUSWIDTH_1_BYTE) | \
BIT(DMA_SLAVE_BUSWIDTH_2_BYTES) | \
BIT(DMA_SLAVE_BUSWIDTH_4_BYTES) | \
BIT(DMA_SLAVE_BUSWIDTH_8_BYTES))
static int sirfsoc_dma_device_slave_caps(struct dma_chan *dchan,
struct dma_slave_caps *caps)
{
caps->src_addr_widths = SIRFSOC_DMA_BUSWIDTHS;
caps->dstn_addr_widths = SIRFSOC_DMA_BUSWIDTHS;
caps->directions = BIT(DMA_DEV_TO_MEM) | BIT(DMA_MEM_TO_DEV);
caps->cmd_pause = true;
caps->cmd_terminate = true;
return 0;
}
static int sirfsoc_dma_probe(struct platform_device *op)
{
struct device_node *dn = op->dev.of_node;
@ -712,6 +731,7 @@ static int sirfsoc_dma_probe(struct platform_device *op)
dma->device_tx_status = sirfsoc_dma_tx_status;
dma->device_prep_interleaved_dma = sirfsoc_dma_prep_interleaved;
dma->device_prep_dma_cyclic = sirfsoc_dma_prep_cyclic;
dma->device_slave_caps = sirfsoc_dma_device_slave_caps;
INIT_LIST_HEAD(&dma->channels);
dma_cap_set(DMA_SLAVE, dma->cap_mask);