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Diffstat (limited to 'include/linux/usb/otg.h')
-rw-r--r--include/linux/usb/otg.h164
1 files changed, 93 insertions, 71 deletions
diff --git a/include/linux/usb/otg.h b/include/linux/usb/otg.h
index d87f44f5b04..f67810f8f21 100644
--- a/include/linux/usb/otg.h
+++ b/include/linux/usb/otg.h
@@ -35,7 +35,7 @@ enum usb_otg_state {
OTG_STATE_A_VBUS_ERR,
};
-enum usb_xceiv_events {
+enum usb_phy_events {
USB_EVENT_NONE, /* no events or cable disconnected */
USB_EVENT_VBUS, /* vbus valid event */
USB_EVENT_ID, /* id was grounded */
@@ -43,14 +43,39 @@ enum usb_xceiv_events {
USB_EVENT_ENUMERATED, /* gadget driver enumerated */
};
-struct otg_transceiver;
+struct usb_phy;
/* for transceivers connected thru an ULPI interface, the user must
* provide access ops
*/
-struct otg_io_access_ops {
- int (*read)(struct otg_transceiver *otg, u32 reg);
- int (*write)(struct otg_transceiver *otg, u32 val, u32 reg);
+struct usb_phy_io_ops {
+ int (*read)(struct usb_phy *x, u32 reg);
+ int (*write)(struct usb_phy *x, u32 val, u32 reg);
+};
+
+struct usb_otg {
+ u8 default_a;
+
+ struct usb_phy *phy;
+ struct usb_bus *host;
+ struct usb_gadget *gadget;
+
+ /* bind/unbind the host controller */
+ int (*set_host)(struct usb_otg *otg, struct usb_bus *host);
+
+ /* bind/unbind the peripheral controller */
+ int (*set_peripheral)(struct usb_otg *otg,
+ struct usb_gadget *gadget);
+
+ /* effective for A-peripheral, ignored for B devices */
+ int (*set_vbus)(struct usb_otg *otg, bool enabled);
+
+ /* for B devices only: start session with A-Host */
+ int (*start_srp)(struct usb_otg *otg);
+
+ /* start or continue HNP role switch */
+ int (*start_hnp)(struct usb_otg *otg);
+
};
/*
@@ -59,22 +84,20 @@ struct otg_io_access_ops {
* moment, using the transceiver, ID signal, HNP and sometimes static
* configuration information (including "board isn't wired for otg").
*/
-struct otg_transceiver {
+struct usb_phy {
struct device *dev;
const char *label;
unsigned int flags;
- u8 default_a;
enum usb_otg_state state;
- enum usb_xceiv_events last_event;
+ enum usb_phy_events last_event;
- struct usb_bus *host;
- struct usb_gadget *gadget;
+ struct usb_otg *otg;
- struct otg_io_access_ops *io_ops;
- void __iomem *io_priv;
+ struct usb_phy_io_ops *io_ops;
+ void __iomem *io_priv;
- /* for notification of usb_xceiv_events */
+ /* for notification of usb_phy_events */
struct atomic_notifier_head notifier;
/* to pass extra port status to the root hub */
@@ -82,40 +105,22 @@ struct otg_transceiver {
u16 port_change;
/* initialize/shutdown the OTG controller */
- int (*init)(struct otg_transceiver *otg);
- void (*shutdown)(struct otg_transceiver *otg);
-
- /* bind/unbind the host controller */
- int (*set_host)(struct otg_transceiver *otg,
- struct usb_bus *host);
-
- /* bind/unbind the peripheral controller */
- int (*set_peripheral)(struct otg_transceiver *otg,
- struct usb_gadget *gadget);
+ int (*init)(struct usb_phy *x);
+ void (*shutdown)(struct usb_phy *x);
/* effective for B devices, ignored for A-peripheral */
- int (*set_power)(struct otg_transceiver *otg,
+ int (*set_power)(struct usb_phy *x,
unsigned mA);
- /* effective for A-peripheral, ignored for B devices */
- int (*set_vbus)(struct otg_transceiver *otg,
- bool enabled);
-
/* for non-OTG B devices: set transceiver into suspend mode */
- int (*set_suspend)(struct otg_transceiver *otg,
+ int (*set_suspend)(struct usb_phy *x,
int suspend);
- /* for B devices only: start session with A-Host */
- int (*start_srp)(struct otg_transceiver *otg);
-
- /* start or continue HNP role switch */
- int (*start_hnp)(struct otg_transceiver *otg);
-
};
/* for board-specific init logic */
-extern int otg_set_transceiver(struct otg_transceiver *);
+extern int usb_set_transceiver(struct usb_phy *);
#if defined(CONFIG_NOP_USB_XCEIV) || (defined(CONFIG_NOP_USB_XCEIV_MODULE) && defined(MODULE))
/* sometimes transceivers are accessed only through e.g. ULPI */
@@ -132,50 +137,50 @@ static inline void usb_nop_xceiv_unregister(void)
#endif
/* helpers for direct access thru low-level io interface */
-static inline int otg_io_read(struct otg_transceiver *otg, u32 reg)
+static inline int usb_phy_io_read(struct usb_phy *x, u32 reg)
{
- if (otg->io_ops && otg->io_ops->read)
- return otg->io_ops->read(otg, reg);
+ if (x->io_ops && x->io_ops->read)
+ return x->io_ops->read(x, reg);
return -EINVAL;
}
-static inline int otg_io_write(struct otg_transceiver *otg, u32 val, u32 reg)
+static inline int usb_phy_io_write(struct usb_phy *x, u32 val, u32 reg)
{
- if (otg->io_ops && otg->io_ops->write)
- return otg->io_ops->write(otg, val, reg);
+ if (x->io_ops && x->io_ops->write)
+ return x->io_ops->write(x, val, reg);
return -EINVAL;
}
static inline int
-otg_init(struct otg_transceiver *otg)
+usb_phy_init(struct usb_phy *x)
{
- if (otg->init)
- return otg->init(otg);
+ if (x->init)
+ return x->init(x);
return 0;
}
static inline void
-otg_shutdown(struct otg_transceiver *otg)
+usb_phy_shutdown(struct usb_phy *x)
{
- if (otg->shutdown)
- otg->shutdown(otg);
+ if (x->shutdown)
+ x->shutdown(x);
}
/* for usb host and peripheral controller drivers */
#ifdef CONFIG_USB_OTG_UTILS
-extern struct otg_transceiver *otg_get_transceiver(void);
-extern void otg_put_transceiver(struct otg_transceiver *);
+extern struct usb_phy *usb_get_transceiver(void);
+extern void usb_put_transceiver(struct usb_phy *);
extern const char *otg_state_string(enum usb_otg_state state);
#else
-static inline struct otg_transceiver *otg_get_transceiver(void)
+static inline struct usb_phy *usb_get_transceiver(void)
{
return NULL;
}
-static inline void otg_put_transceiver(struct otg_transceiver *x)
+static inline void usb_put_transceiver(struct usb_phy *x)
{
}
@@ -187,67 +192,84 @@ static inline const char *otg_state_string(enum usb_otg_state state)
/* Context: can sleep */
static inline int
-otg_start_hnp(struct otg_transceiver *otg)
+otg_start_hnp(struct usb_otg *otg)
{
- return otg->start_hnp(otg);
+ if (otg && otg->start_hnp)
+ return otg->start_hnp(otg);
+
+ return -ENOTSUPP;
}
/* Context: can sleep */
static inline int
-otg_set_vbus(struct otg_transceiver *otg, bool enabled)
+otg_set_vbus(struct usb_otg *otg, bool enabled)
{
- return otg->set_vbus(otg, enabled);
+ if (otg && otg->set_vbus)
+ return otg->set_vbus(otg, enabled);
+
+ return -ENOTSUPP;
}
/* for HCDs */
static inline int
-otg_set_host(struct otg_transceiver *otg, struct usb_bus *host)
+otg_set_host(struct usb_otg *otg, struct usb_bus *host)
{
- return otg->set_host(otg, host);
+ if (otg && otg->set_host)
+ return otg->set_host(otg, host);
+
+ return -ENOTSUPP;
}
/* for usb peripheral controller drivers */
/* Context: can sleep */
static inline int
-otg_set_peripheral(struct otg_transceiver *otg, struct usb_gadget *periph)
+otg_set_peripheral(struct usb_otg *otg, struct usb_gadget *periph)
{
- return otg->set_peripheral(otg, periph);
+ if (otg && otg->set_peripheral)
+ return otg->set_peripheral(otg, periph);
+
+ return -ENOTSUPP;
}
static inline int
-otg_set_power(struct otg_transceiver *otg, unsigned mA)
+usb_phy_set_power(struct usb_phy *x, unsigned mA)
{
- return otg->set_power(otg, mA);
+ if (x && x->set_power)
+ return x->set_power(x, mA);
+ return 0;
}
/* Context: can sleep */
static inline int
-otg_set_suspend(struct otg_transceiver *otg, int suspend)
+usb_phy_set_suspend(struct usb_phy *x, int suspend)
{
- if (otg->set_suspend != NULL)
- return otg->set_suspend(otg, suspend);
+ if (x->set_suspend != NULL)
+ return x->set_suspend(x, suspend);
else
return 0;
}
static inline int
-otg_start_srp(struct otg_transceiver *otg)
+otg_start_srp(struct usb_otg *otg)
{
- return otg->start_srp(otg);
+ if (otg && otg->start_srp)
+ return otg->start_srp(otg);
+
+ return -ENOTSUPP;
}
/* notifiers */
static inline int
-otg_register_notifier(struct otg_transceiver *otg, struct notifier_block *nb)
+usb_register_notifier(struct usb_phy *x, struct notifier_block *nb)
{
- return atomic_notifier_chain_register(&otg->notifier, nb);
+ return atomic_notifier_chain_register(&x->notifier, nb);
}
static inline void
-otg_unregister_notifier(struct otg_transceiver *otg, struct notifier_block *nb)
+usb_unregister_notifier(struct usb_phy *x, struct notifier_block *nb)
{
- atomic_notifier_chain_unregister(&otg->notifier, nb);
+ atomic_notifier_chain_unregister(&x->notifier, nb);
}
/* for OTG controller drivers (and maybe other stuff) */