diff options
| author | Rongjun Ying <rongjun.ying@csr.com> | 2013-12-23 13:19:21 +0100 |
|---|---|---|
| committer | Vinod Koul <vinod.koul@intel.com> | 2014-01-20 08:47:31 +0100 |
| commit | ba07d812f58c0ec65fff981a085529ed88965d23 (patch) | |
| tree | c63e168e5dbfc5cc92b7c33b3d83ee1e528c8a06 /drivers/dma | |
| parent | DMA: Freescale: change BWC from 256 bytes to 1024 bytes (diff) | |
| download | linux-ba07d812f58c0ec65fff981a085529ed88965d23.tar.xz linux-ba07d812f58c0ec65fff981a085529ed88965d23.zip | |
dmaengine: sirf: Add device_slave_caps interface
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>
Diffstat (limited to 'drivers/dma')
| -rw-r--r-- | drivers/dma/sirf-dma.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/drivers/dma/sirf-dma.c b/drivers/dma/sirf-dma.c index 6aec3ad814d3..d4d3a3109b16 100644 --- a/drivers/dma/sirf-dma.c +++ b/drivers/dma/sirf-dma.c @@ -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); |