diff options
| -rw-r--r-- | drivers/dma/dw/of.c | 44 |
1 files changed, 16 insertions, 28 deletions
diff --git a/drivers/dma/dw/of.c b/drivers/dma/dw/of.c index 4d2b89142721..523ca806837c 100644 --- a/drivers/dma/dw/of.c +++ b/drivers/dma/dw/of.c @@ -50,7 +50,7 @@ struct dw_dma_platform_data *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], mb[DW_DMA_MAX_NR_CHANNELS]; + u32 tmp, arr[DW_DMA_MAX_NR_MASTERS]; u32 nr_masters; u32 nr_channels; @@ -71,41 +71,29 @@ struct dw_dma_platform_data *dw_dma_parse_dt(struct platform_device *pdev) pdata->nr_masters = nr_masters; pdata->nr_channels = nr_channels; - if (!of_property_read_u32(np, "chan_allocation_order", &tmp)) - pdata->chan_allocation_order = (unsigned char)tmp; + of_property_read_u32(np, "chan_allocation_order", &pdata->chan_allocation_order); + of_property_read_u32(np, "chan_priority", &pdata->chan_priority); - if (!of_property_read_u32(np, "chan_priority", &tmp)) - pdata->chan_priority = tmp; + of_property_read_u32(np, "block_size", &pdata->block_size); - if (!of_property_read_u32(np, "block_size", &tmp)) - pdata->block_size = tmp; - - if (!of_property_read_u32_array(np, "data-width", arr, nr_masters)) { - for (tmp = 0; tmp < nr_masters; tmp++) - pdata->data_width[tmp] = arr[tmp]; - } else if (!of_property_read_u32_array(np, "data_width", arr, nr_masters)) { + /* Try deprecated property first */ + if (!of_property_read_u32_array(np, "data_width", arr, nr_masters)) { for (tmp = 0; tmp < nr_masters; tmp++) 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; - } + /* If "data_width" and "data-width" both provided use the latter one */ + of_property_read_u32_array(np, "data-width", pdata->data_width, nr_masters); - if (of_property_read_u32_array(np, "snps,max-burst-len", pdata->max_burst, - nr_channels)) { - memset32(pdata->max_burst, DW_DMA_MAX_BURST, nr_channels); - } + memset32(pdata->multi_block, 1, nr_channels); + of_property_read_u32_array(np, "multi-block", pdata->multi_block, nr_channels); - if (!of_property_read_u32(np, "snps,dma-protection-control", &tmp)) { - if (tmp > CHAN_PROTCTL_MASK) - return NULL; - pdata->protctl = tmp; - } + memset32(pdata->max_burst, DW_DMA_MAX_BURST, nr_channels); + of_property_read_u32_array(np, "snps,max-burst-len", pdata->max_burst, nr_channels); + + of_property_read_u32(np, "snps,dma-protection-control", &pdata->protctl); + if (pdata->protctl > CHAN_PROTCTL_MASK) + return NULL; return pdata; } |