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USB: EHCI: prepare to make ehci-hcd a library module

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This patch (as1624) prepares ehci-hcd for being split up into a core
library and separate platform driver modules.  A generic
ehci_hc_driver structure is created, containing all the "standard"
values, and a new mechanism is added whereby a driver module can
specify a set of overrides to those values.  In addition the
ehci_setup(), ehci_suspend(), and ehci_resume() routines need to be
EXPORTed for use by the drivers.

As a side effect of this change, a few routines no longer need to be
marked __maybe_unused.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
CC: Felipe Balbi <balbi@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Alan Stern
2012-11-01 11:12:58 -04:00
committed by Greg Kroah-Hartman
parent 7c83b44836
commit 3e02320399
3 changed files with 89 additions and 7 deletions
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17
drivers/usb/host/ehci.h
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@@ -781,4 +781,21 @@ static inline u32 hc32_to_cpup (const struct ehci_hcd *ehci, const __hc32 *x)
/*-------------------------------------------------------------------------*/
/* Declarations of things exported for use by ehci platform drivers */
struct ehci_driver_overrides {
const char *product_desc;
size_t extra_priv_size;
int (*reset)(struct usb_hcd *hcd);
};
extern void ehci_init_driver(struct hc_driver *drv,
const struct ehci_driver_overrides *over);
extern int ehci_setup(struct usb_hcd *hcd);
#ifdef CONFIG_PM
extern int ehci_suspend(struct usb_hcd *hcd, bool do_wakeup);
extern int ehci_resume(struct usb_hcd *hcd, bool hibernated);
#endif /* CONFIG_PM */
#endif /* __LINUX_EHCI_HCD_H */