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dmaengine: imx-sdma: add SDMA_BD_MAX_CNT to replace '0xffff' 

Add macro SDMA_BD_MAX_CNT to replace '0xffff'.

Signed-off-by: Robin Gong <yibin.gong@nxp.com>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
This commit is contained in:
Robin Gong 2018-07-24 01:46:10 +08:00 committed by Vinod Koul
parent 24ca312dd6
commit 4a6b2e8a9a
1 changed files with 6 additions and 5 deletions
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11
drivers/dma/imx-sdma.c
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@ -185,6 +185,7 @@
* Mode/Count of data node descriptors - IPCv2
*/
struct sdma_mode_count {
#define SDMA_BD_MAX_CNT 0xffff
u32 count : 16; /* size of the buffer pointed by this BD */
u32 status : 8; /* E,R,I,C,W,D status bits stored here */
u32 command : 8; /* command mostly used for channel 0 */
@ -1344,9 +1345,9 @@ static struct dma_async_tx_descriptor *sdma_prep_slave_sg(
count = sg_dma_len(sg);
if (count > 0xffff) {
if (count > SDMA_BD_MAX_CNT) {
dev_err(sdma->dev, "SDMA channel %d: maximum bytes for sg entry exceeded: %d > %d\n",
channel, count, 0xffff);
channel, count, SDMA_BD_MAX_CNT);
goto err_bd_out;
}
@ -1421,9 +1422,9 @@ static struct dma_async_tx_descriptor *sdma_prep_dma_cyclic(
sdmac->flags |= IMX_DMA_SG_LOOP;
if (period_len > 0xffff) {
if (period_len > SDMA_BD_MAX_CNT) {
dev_err(sdma->dev, "SDMA channel %d: maximum period size exceeded: %zu > %d\n",
channel, period_len, 0xffff);
channel, period_len, SDMA_BD_MAX_CNT);
goto err_bd_out;
}
@ -1970,7 +1971,7 @@ static int sdma_probe(struct platform_device *pdev)
sdma->dma_device.residue_granularity = DMA_RESIDUE_GRANULARITY_SEGMENT;
sdma->dma_device.device_issue_pending = sdma_issue_pending;
sdma->dma_device.dev->dma_parms = &sdma->dma_parms;
dma_set_max_seg_size(sdma->dma_device.dev, 65535);
dma_set_max_seg_size(sdma->dma_device.dev, SDMA_BD_MAX_CNT);
platform_set_drvdata(pdev, sdma);