diff options
Diffstat (limited to 'drivers/dma/dw/platform.c')
| -rw-r--r-- | drivers/dma/dw/platform.c | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/drivers/dma/dw/platform.c b/drivers/dma/dw/platform.c index aa7a5c1b9bf8..b1655e40cfa2 100644 --- a/drivers/dma/dw/platform.c +++ b/drivers/dma/dw/platform.c @@ -102,7 +102,7 @@ dw_dma_parse_dt(struct platform_device *pdev) { struct device_node *np = pdev->dev.of_node; struct dw_dma_platform_data *pdata; - u32 tmp, arr[DW_DMA_MAX_NR_MASTERS]; + u32 tmp, arr[DW_DMA_MAX_NR_MASTERS], mb[DW_DMA_MAX_NR_CHANNELS]; u32 nr_masters; u32 nr_channels; @@ -118,6 +118,8 @@ dw_dma_parse_dt(struct platform_device *pdev) if (of_property_read_u32(np, "dma-channels", &nr_channels)) return NULL; + if (nr_channels > DW_DMA_MAX_NR_CHANNELS) + return NULL; pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL); if (!pdata) @@ -152,6 +154,14 @@ dw_dma_parse_dt(struct platform_device *pdev) pdata->data_width[tmp] = BIT(arr[tmp] & 0x07); } + if (!of_property_read_u32_array(np, "multi-block", mb, nr_channels)) { + for (tmp = 0; tmp < nr_channels; tmp++) + pdata->multi_block[tmp] = mb[tmp]; + } else { + for (tmp = 0; tmp < nr_channels; tmp++) + pdata->multi_block[tmp] = 1; + } + return pdata; } #else |