diff options
Diffstat (limited to 'drivers/dma/dw/platform.c')
| -rw-r--r-- | drivers/dma/dw/platform.c | 40 |
1 files changed, 22 insertions, 18 deletions
diff --git a/drivers/dma/dw/platform.c b/drivers/dma/dw/platform.c index 26edbe3a2..5bda0eb9f 100644 --- a/drivers/dma/dw/platform.c +++ b/drivers/dma/dw/platform.c @@ -42,13 +42,13 @@ static struct dma_chan *dw_dma_of_xlate(struct of_phandle_args *dma_spec, slave.src_id = dma_spec->args[0]; slave.dst_id = dma_spec->args[0]; - slave.src_master = dma_spec->args[1]; - slave.dst_master = dma_spec->args[2]; + slave.m_master = dma_spec->args[1]; + slave.p_master = dma_spec->args[2]; if (WARN_ON(slave.src_id >= DW_DMA_MAX_NR_REQUESTS || slave.dst_id >= DW_DMA_MAX_NR_REQUESTS || - slave.src_master >= dw->nr_masters || - slave.dst_master >= dw->nr_masters)) + slave.m_master >= dw->pdata->nr_masters || + slave.p_master >= dw->pdata->nr_masters)) return NULL; dma_cap_zero(cap); @@ -66,8 +66,8 @@ static bool dw_dma_acpi_filter(struct dma_chan *chan, void *param) .dma_dev = dma_spec->dev, .src_id = dma_spec->slave_id, .dst_id = dma_spec->slave_id, - .src_master = 1, - .dst_master = 0, + .m_master = 0, + .p_master = 1, }; return dw_dma_filter(chan, &slave); @@ -103,6 +103,7 @@ 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 nr_masters; u32 nr_channels; if (!np) { @@ -110,6 +111,11 @@ dw_dma_parse_dt(struct platform_device *pdev) return NULL; } + if (of_property_read_u32(np, "dma-masters", &nr_masters)) + return NULL; + if (nr_masters < 1 || nr_masters > DW_DMA_MAX_NR_MASTERS) + return NULL; + if (of_property_read_u32(np, "dma-channels", &nr_channels)) return NULL; @@ -117,6 +123,7 @@ dw_dma_parse_dt(struct platform_device *pdev) if (!pdata) return NULL; + pdata->nr_masters = nr_masters; pdata->nr_channels = nr_channels; if (of_property_read_bool(np, "is_private")) @@ -131,17 +138,13 @@ dw_dma_parse_dt(struct platform_device *pdev) if (!of_property_read_u32(np, "block_size", &tmp)) pdata->block_size = tmp; - if (!of_property_read_u32(np, "dma-masters", &tmp)) { - if (tmp > DW_DMA_MAX_NR_MASTERS) - return NULL; - - pdata->nr_masters = tmp; - } - - if (!of_property_read_u32_array(np, "data_width", arr, - pdata->nr_masters)) - for (tmp = 0; tmp < pdata->nr_masters; 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)) { + for (tmp = 0; tmp < nr_masters; tmp++) + pdata->data_width[tmp] = BIT(arr[tmp] & 0x07); + } return pdata; } @@ -158,7 +161,7 @@ static int dw_probe(struct platform_device *pdev) struct dw_dma_chip *chip; struct device *dev = &pdev->dev; struct resource *mem; - struct dw_dma_platform_data *pdata; + const struct dw_dma_platform_data *pdata; int err; chip = devm_kzalloc(dev, sizeof(*chip), GFP_KERNEL); @@ -183,6 +186,7 @@ static int dw_probe(struct platform_device *pdev) pdata = dw_dma_parse_dt(pdev); chip->dev = dev; + chip->pdata = pdata; chip->clk = devm_clk_get(chip->dev, "hclk"); if (IS_ERR(chip->clk)) @@ -193,7 +197,7 @@ static int dw_probe(struct platform_device *pdev) pm_runtime_enable(&pdev->dev); - err = dw_dma_probe(chip, pdata); + err = dw_dma_probe(chip); if (err) goto err_dw_dma_probe; |