On 25/11/14 16:49, Kevin Cernekee wrote:
> On chips strapped for BE, we'll need to use ioread32be/iowrite32be instead of
> ioread32/iowrite32.
Has of_device_is_big_endian() been merged in a tree now, I am not seeing
it in Linus' tree, but have not look at Grant's tree yet. Thanks
>
> Signed-off-by: Kevin Cernekee <cernekee@xxxxxxxxx>
> ---
> drivers/bus/brcmstb_gisb.c | 13 +++++++++++--
> 1 file changed, 11 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/bus/brcmstb_gisb.c b/drivers/bus/brcmstb_gisb.c
> index 172908d..969b992 100644
> --- a/drivers/bus/brcmstb_gisb.c
> +++ b/drivers/bus/brcmstb_gisb.c
> @@ -90,6 +90,7 @@ static const int gisb_offsets_bcm7445[] = {
> struct brcmstb_gisb_arb_device {
> void __iomem *base;
> const int *gisb_offsets;
> + bool big_endian;
> struct mutex lock;
> struct list_head next;
> u32 valid_mask;
> @@ -106,7 +107,10 @@ static u32 gisb_read(struct brcmstb_gisb_arb_device *gdev, int reg)
> if (offset == -1)
> return 1;
>
> - return ioread32(gdev->base + offset);
> + if (gdev->big_endian)
> + return ioread32be(gdev->base + offset);
> + else
> + return ioread32(gdev->base + offset);
> }
>
> static void gisb_write(struct brcmstb_gisb_arb_device *gdev, u32 val, int reg)
> @@ -115,7 +119,11 @@ static void gisb_write(struct brcmstb_gisb_arb_device *gdev, u32 val, int reg)
>
> if (offset == -1)
> return;
> - iowrite32(val, gdev->base + reg);
> +
> + if (gdev->big_endian)
> + iowrite32be(val, gdev->base + reg);
> + else
> + iowrite32(val, gdev->base + reg);
> }
>
> static ssize_t gisb_arb_get_timeout(struct device *dev,
> @@ -300,6 +308,7 @@ static int brcmstb_gisb_arb_probe(struct platform_device *pdev)
> return -EINVAL;
> }
> gdev->gisb_offsets = of_id->data;
> + gdev->big_endian = of_device_is_big_endian(dn);
>
> err = devm_request_irq(&pdev->dev, timeout_irq,
> brcmstb_gisb_timeout_handler, 0, pdev->name,
>
--
Florian
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