diff options
Diffstat (limited to 'drivers/dma')
| -rw-r--r-- | drivers/dma/dw/core.c | 2 | ||||
| -rw-r--r-- | drivers/dma/dw/platform.c | 12 | ||||
| -rw-r--r-- | drivers/dma/dw/regs.h | 3 |
3 files changed, 14 insertions, 3 deletions
diff --git a/drivers/dma/dw/core.c b/drivers/dma/dw/core.c index c2c0a613cb7a..e5adf5d1c34f 100644 --- a/drivers/dma/dw/core.c +++ b/drivers/dma/dw/core.c @@ -1569,7 +1569,7 @@ int dw_dma_probe(struct dw_dma_chip *chip) (dwc_params >> DWC_PARAMS_MBLK_EN & 0x1) == 0; } else { dwc->block_size = pdata->block_size; - dwc->nollp = pdata->is_nollp; + dwc->nollp = !pdata->multi_block[i]; } } 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 diff --git a/drivers/dma/dw/regs.h b/drivers/dma/dw/regs.h index f65dd104479f..4e0128c62704 100644 --- a/drivers/dma/dw/regs.h +++ b/drivers/dma/dw/regs.h @@ -12,7 +12,8 @@ #include <linux/interrupt.h> #include <linux/dmaengine.h> -#define DW_DMA_MAX_NR_CHANNELS 8 +#include "internal.h" + #define DW_DMA_MAX_NR_REQUESTS 16 /* flow controller */ |