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authorKevin Cernekee <cernekee@gmail.com>2014-11-26 03:49:53 +0300
committerFlorian Fainelli <f.fainelli@gmail.com>2015-05-29 07:00:20 +0300
commitfbf4e262bb505a76c5cba227fcb2f4ea657d9921 (patch)
tree206e3a70112f10633e5504762ed6e6da33258415 /drivers/bus
parent7dc95b40f599293aedf30432749ad25b51549041 (diff)
downloadlinux-fbf4e262bb505a76c5cba227fcb2f4ea657d9921.tar.xz
bus: brcmstb_gisb: Honor the "big-endian" and "native-endian" DT properties
On chips strapped for BE, we'll need to use ioread32be/iowrite32be instead of ioread32/iowrite32. Signed-off-by: Kevin Cernekee <cernekee@gmail.com> Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Diffstat (limited to 'drivers/bus')
-rw-r--r--drivers/bus/brcmstb_gisb.c13
1 files changed, 11 insertions, 2 deletions
diff --git a/drivers/bus/brcmstb_gisb.c b/drivers/bus/brcmstb_gisb.c
index 738612c45266..f364fa4d24eb 100644
--- a/drivers/bus/brcmstb_gisb.c
+++ b/drivers/bus/brcmstb_gisb.c
@@ -91,6 +91,7 @@ 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;
@@ -108,7 +109,10 @@ 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)
@@ -117,7 +121,11 @@ 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,
@@ -296,6 +304,7 @@ static int __init 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,