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    SubjectRe: [PATCH 38/39] dmaengine: ste_dma40: Fetch the number of physical channels from DT
    On Wed, May 15, 2013 at 10:52:01AM +0100, Lee Jones wrote:
    > 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 <vinod.koul@intel.com>
    > Cc: Dan Williams <djbw@fb.com>
    > Cc: Per Forlin <per.forlin@stericsson.com>
    > Cc: Rabin Vincent <rabin@rab.in>
    > Signed-off-by: Lee Jones <lee.jones@linaro.org>
    > ---
    Acked-by: Vinod Koul <vinod.koul@intel.com>

    > 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 ae462d3..4e528dd 100644
    > --- a/drivers/dma/ste_dma40.c
    > +++ b/drivers/dma/ste_dma40.c
    > @@ -3482,7 +3482,7 @@ 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,
    > @@ -3491,6 +3491,11 @@ 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
    >


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