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usb: xhci: cleanup xhci_hcd allocation

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HCD core allocates memory for HCD private data in
usb_create_[shared_]hcd() so make use of that
mechanism to allocate the struct xhci_hcd.

Introduce struct xhci_driver_overrides to provide
the size of HCD private data and hc_driver operation
overrides. As of now we only need to override the
reset and start methods.

Signed-off-by: Roger Quadros <rogerq@ti.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Roger Quadros
2015-05-29 17:01:46 +03:00
committed by Greg Kroah-Hartman
parent 2cfef79ddc
commit cd33a32157
4 changed files with 52 additions and 32 deletions
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19
drivers/usb/host/xhci.h
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@@ -1591,10 +1591,24 @@ struct xhci_hcd {
#define COMP_MODE_RCVRY_MSECS 2000
};
/* Platform specific overrides to generic XHCI hc_driver ops */
struct xhci_driver_overrides {
size_t extra_priv_size;
int (*reset)(struct usb_hcd *hcd);
int (*start)(struct usb_hcd *hcd);
};
/* convert between an HCD pointer and the corresponding EHCI_HCD */
static inline struct xhci_hcd *hcd_to_xhci(struct usb_hcd *hcd)
{
return *((struct xhci_hcd **) (hcd->hcd_priv));
struct usb_hcd *primary_hcd;
if (usb_hcd_is_primary_hcd(hcd))
primary_hcd = hcd;
else
primary_hcd = hcd->primary_hcd;
return (struct xhci_hcd *) (primary_hcd->hcd_priv);
}
static inline struct usb_hcd *xhci_to_hcd(struct xhci_hcd *xhci)
@@ -1748,7 +1762,8 @@ int xhci_run(struct usb_hcd *hcd);
void xhci_stop(struct usb_hcd *hcd);
void xhci_shutdown(struct usb_hcd *hcd);
int xhci_gen_setup(struct usb_hcd *hcd, xhci_get_quirks_t get_quirks);
void xhci_init_driver(struct hc_driver *drv, int (*setup_fn)(struct usb_hcd *));
void xhci_init_driver(struct hc_driver *drv,
const struct xhci_driver_overrides *over);
#ifdef CONFIG_PM
int xhci_suspend(struct xhci_hcd *xhci, bool do_wakeup);