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xhci: dbc: Add a operations structure to access driver functions

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Don't call dbctty driver functions directly from dbc core code.
Introduce a new dbc_driver structure that contains function pointers
for disconnect and configure operations.

The driver (ttydbc) must provide these opeations when creating a dbc.

Name the structure dbc_driver instead of dbc_ops as we plan to
add more driver configureable values here, such as vid and pid.

Decouples dbc and dbctty.

Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Link: https://lore.kernel.org/r/20200723144530.9992-26-mathias.nyman@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Mathias Nyman
2020-07-23 17:45:28 +03:00
committed by Greg Kroah-Hartman
parent 4521f16139
commit 6ae6470bfa
3 changed files with 21 additions and 15 deletions
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8
drivers/usb/host/xhci-dbgcap.h
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@@ -112,6 +112,11 @@ struct dbc_port {
bool registered;
};
struct dbc_driver {
int (*configure)(struct xhci_dbc *dbc);
void (*disconnect)(struct xhci_dbc *dbc);
};
struct xhci_dbc {
spinlock_t lock; /* device access */
struct device *dev;
@@ -133,6 +138,7 @@ struct xhci_dbc {
struct dbc_ep eps[2];
struct dbc_port port;
const struct dbc_driver *driver;
};
struct dbc_request {
@@ -192,8 +198,6 @@ int xhci_dbc_init(struct xhci_hcd *xhci);
void xhci_dbc_exit(struct xhci_hcd *xhci);
int xhci_dbc_tty_probe(struct xhci_hcd *xhci);
void xhci_dbc_tty_remove(struct xhci_dbc *dbc);
int xhci_dbc_tty_register_device(struct xhci_dbc *dbc);
void xhci_dbc_tty_unregister_device(struct xhci_dbc *dbc);
struct dbc_request *dbc_alloc_request(struct xhci_dbc *dbc,
unsigned int direction,
gfp_t flags);