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SubjectRe: [PATCH] dmaengine: bam-dma: fill slave directions bit mask
On 03/04/2015 09:44 PM, Andy Gross wrote:
> On Wed, Mar 04, 2015 at 09:32:13PM +0530, Vinod Koul wrote:
>> On Wed, Mar 04, 2015 at 05:25:10PM +0200, Stanimir Varbanov wrote:
>>> This will avoid warning during async device registration.
>>>
>>> Signed-off-by: Stanimir Varbanov <stanimir.varbanov@linaro.org>
>>> ---
>>> drivers/dma/qcom_bam_dma.c | 1 +
>>> 1 files changed, 1 insertions(+), 0 deletions(-)
>>>
>>> diff --git a/drivers/dma/qcom_bam_dma.c b/drivers/dma/qcom_bam_dma.c
>>> index c3113e3..cc9e5ee 100644
>>> --- a/drivers/dma/qcom_bam_dma.c
>>> +++ b/drivers/dma/qcom_bam_dma.c
>>> @@ -1143,6 +1143,7 @@ static int bam_dma_probe(struct platform_device *pdev)
>>> dma_cap_set(DMA_SLAVE, bdev->common.cap_mask);
>>>
>>> /* initialize dmaengine apis */
>>> + bdev->common.directions = BIT(DMA_DEV_TO_MEM) | BIT(DMA_MEM_TO_DEV);
>>> bdev->common.device_alloc_chan_resources = bam_alloc_chan;
>>> bdev->common.device_free_chan_resources = bam_free_chan;
>>> bdev->common.device_prep_slave_sg = bam_prep_slave_sg;
>> You need to fill other fields, src/dstn_addr_widths and
>> residue_granularity...
>
> Add segment granularity for BAM, as we can read the current completed segment.
> bdev->common.residue_granularity = DMA_RESIDUE_GRANULARITY_SEGMENT;
>
> Use DMA_SLAVE_BUSWIDTH_4_BYTES for the src/dst addr width:
> bdev->common.src_addr_widths = DMA_SLAVE_BUSWIDTH_4_BYTES;
> bdev->common.dst_addr_widths = DMA_SLAVE_BUSWIDTH_4_BYTES;
>

Thanks Andy, will add those fields too.

--
regards,
Stan


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