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usb: dwc3: core: split host address space

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This fix prevents a problem with dwc3 and host mode where
we were requesting the entire memory region in dwc3/core.c,
thus preventing xhci-plat from ever ioremapping its own address space.

Signed-off-by: Ido Shayevitz <idos@codeaurora.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>
This commit is contained in:
Ido Shayevitz
2012-04-24 14:18:39 +03:00
committed by Felipe Balbi
parent ab5e59dbdb
commit 51249dca62
4 changed files with 45 additions and 34 deletions
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16
drivers/usb/dwc3/io.h
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@@ -41,14 +41,26 @@
#include <linux/io.h>
#include "core.h"
static inline u32 dwc3_readl(void __iomem *base, u32 offset)
{
return readl(base + offset);
/*
* We requested the mem region starting from the Globals address
* space, see dwc3_probe in core.c.
* However, the offsets are given starting from xHCI address space.
*/
return readl(base + (offset - DWC3_GLOBALS_REGS_START));
}
static inline void dwc3_writel(void __iomem *base, u32 offset, u32 value)
{
writel(value, base + offset);
/*
* We requested the mem region starting from the Globals address
* space, see dwc3_probe in core.c.
* However, the offsets are given starting from xHCI address space.
*/
writel(value, base + (offset - DWC3_GLOBALS_REGS_START));
}
#endif /* __DRIVERS_USB_DWC3_IO_H */