Some platforms insist on obscure physical channel availability. This information is currently passed though platform data in internal BSP kernels. Once those platforms land, they'll need to configure them appropriately, so we may as well add the infrastructure.
Cc: Vinod Koul <[email protected]> Cc: Dan Williams <[email protected]> Cc: Per Forlin <[email protected]> Cc: Rabin Vincent <[email protected]> Signed-off-by: Lee Jones <[email protected]> --- drivers/dma/ste_dma40.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/drivers/dma/ste_dma40.c b/drivers/dma/ste_dma40.c index bd5b156..ee96acb 100644 --- a/drivers/dma/ste_dma40.c +++ b/drivers/dma/ste_dma40.c @@ -3468,7 +3468,7 @@ static int __init d40_of_probe(struct platform_device *pdev, struct device_node *np) { struct stedma40_platform_data *pdata; - int num_memcpy = 0; + int num_phy = 0, num_memcpy = 0; const const __be32 *list; pdata = devm_kzalloc(&pdev->dev, @@ -3477,6 +3477,11 @@ static int __init d40_of_probe(struct platform_device *pdev, if (!pdata) return -ENOMEM; + /* If absent this value will be obtained from h/w. */ + of_property_read_u32(np, "dma-channels", &num_phy); + if (num_phy > 0) + pdata->num_of_phy_chans = num_phy; + list = of_get_property(np, "memcpy-channels", &num_memcpy); num_memcpy /= sizeof(*list); -- 1.7.10.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
