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bus: brcmstb_gisb: Honor the "big-endian" and "native-endian" DT properties

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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>
This commit is contained in:
Kevin Cernekee 2014-11-25 16:49:53 -08:00 • committed by Florian Fainelli
parent 7dc95b40f5
commit fbf4e262bb
1 changed files with 11 additions and 2 deletions
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13
drivers/bus/brcmstb_gisb.c
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@ -91,6 +91,7 @@ static const int gisb_offsets_bcm7445[] = {
struct brcmstb_gisb_arb_device { struct brcmstb_gisb_arb_device {
void __iomem *base; void __iomem *base;
const int *gisb_offsets; const int *gisb_offsets;
bool big_endian;
struct mutex lock; struct mutex lock;
struct list_head next; struct list_head next;
u32 valid_mask; u32 valid_mask;
@ -108,7 +109,10 @@ static u32 gisb_read(struct brcmstb_gisb_arb_device *gdev, int reg)
if (offset == -1) if (offset == -1)
return 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) 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) if (offset == -1)
return; 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, 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; return -EINVAL;
} }
gdev->gisb_offsets = of_id->data; gdev->gisb_offsets = of_id->data;
gdev->big_endian = of_device_is_big_endian(dn);
err = devm_request_irq(&pdev->dev, timeout_irq, err = devm_request_irq(&pdev->dev, timeout_irq,
brcmstb_gisb_timeout_handler, 0, pdev->name, brcmstb_gisb_timeout_handler, 0, pdev->name,