On chips strapped for BE, we'll need to use ioread32be/iowrite32be instead of
ioread32/iowrite32.
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,
--
2.1.0
--
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