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#ifndef __LINUX_USB_OTG_H
#define __LINUX_USB_OTG_H
#include <linux/notifier.h>
enum usb_otg_state {
OTG_STATE_UNDEFINED = 0,
OTG_STATE_B_IDLE,
OTG_STATE_B_SRP_INIT,
OTG_STATE_B_PERIPHERAL,
OTG_STATE_B_WAIT_ACON,
OTG_STATE_B_HOST,
OTG_STATE_A_IDLE,
OTG_STATE_A_WAIT_VRISE,
OTG_STATE_A_WAIT_BCON,
OTG_STATE_A_HOST,
OTG_STATE_A_SUSPEND,
OTG_STATE_A_PERIPHERAL,
OTG_STATE_A_WAIT_VFALL,
OTG_STATE_A_VBUS_ERR,
};
enum usb_otg_event {
OTG_EVENT_DEV_CONN_TMOUT,
OTG_EVENT_NO_RESP_FOR_HNP_ENABLE,
OTG_EVENT_HUB_NOT_SUPPORTED,
OTG_EVENT_DEV_NOT_SUPPORTED,
OTG_EVENT_HNP_FAILED,
OTG_EVENT_NO_RESP_FOR_SRP,
OTG_EVENT_INSUFFICIENT_POWER,
};
enum usb_phy_events {
USB_EVENT_NONE,
USB_EVENT_VBUS,
USB_EVENT_ID,
USB_EVENT_CHARGER,
USB_EVENT_ENUMERATED,
};
struct usb_phy;
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;
int (*set_host)(struct usb_otg *otg, struct usb_bus *host);
int (*set_peripheral)(struct usb_otg *otg,
struct usb_gadget *gadget);
int (*set_vbus)(struct usb_otg *otg, bool enabled);
int (*start_srp)(struct usb_otg *otg);
int (*start_hnp)(struct usb_otg *otg);
int (*send_event)(struct usb_otg *otg,
enum usb_otg_event event);
};
struct usb_phy {
struct device *dev;
const char *label;
unsigned int flags;
enum usb_otg_state state;
enum usb_phy_events last_event;
struct usb_otg *otg;
struct device *io_dev;
struct usb_phy_io_ops *io_ops;
void __iomem *io_priv;
struct atomic_notifier_head notifier;
u16 port_status;
u16 port_change;
int (*init)(struct usb_phy *x);
void (*shutdown)(struct usb_phy *x);
int (*set_power)(struct usb_phy *x,
unsigned mA);
int (*set_suspend)(struct usb_phy *x,
int suspend);
int (*send_event)(struct usb_phy *phy,
enum usb_otg_event event);
void (*notify_usb_attached)(void);
void (*notify_usb_disabled)(void);
};
extern int usb_set_transceiver(struct usb_phy *);
#if defined(CONFIG_NOP_USB_XCEIV) || (defined(CONFIG_NOP_USB_XCEIV_MODULE) && defined(MODULE))
extern void usb_nop_xceiv_register(void);
extern void usb_nop_xceiv_unregister(void);
#else
static inline void usb_nop_xceiv_register(void)
{
}
static inline void usb_nop_xceiv_unregister(void)
{
}
#endif
static inline int usb_phy_io_read(struct usb_phy *x, u32 reg)
{
if (x->io_ops && x->io_ops->read)
return x->io_ops->read(x, reg);
return -EINVAL;
}
static inline int usb_phy_io_write(struct usb_phy *x, u32 val, u32 reg)
{
if (x->io_ops && x->io_ops->write)
return x->io_ops->write(x, val, reg);
return -EINVAL;
}
static inline int
usb_phy_init(struct usb_phy *x)
{
if (x->init)
return x->init(x);
return 0;
}
static inline void
usb_phy_shutdown(struct usb_phy *x)
{
if (x->shutdown)
x->shutdown(x);
}
extern int otg_send_event(enum usb_otg_event event);
#ifdef CONFIG_USB_OTG_UTILS
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 usb_phy *usb_get_transceiver(void)
{
return NULL;
}
static inline void usb_put_transceiver(struct usb_phy *x)
{
}
static inline const char *otg_state_string(enum usb_otg_state state)
{
return NULL;
}
#endif
static inline int
otg_start_hnp(struct usb_otg *otg)
{
if (otg && otg->start_hnp)
return otg->start_hnp(otg);
return -ENOTSUPP;
}
static inline int
otg_set_vbus(struct usb_otg *otg, bool enabled)
{
if (otg && otg->set_vbus)
return otg->set_vbus(otg, enabled);
return -ENOTSUPP;
}
static inline int
otg_set_host(struct usb_otg *otg, struct usb_bus *host)
{
if (otg && otg->set_host)
return otg->set_host(otg, host);
return -ENOTSUPP;
}
static inline int
otg_set_peripheral(struct usb_otg *otg, struct usb_gadget *periph)
{
if (otg && otg->set_peripheral)
return otg->set_peripheral(otg, periph);
return -ENOTSUPP;
}
static inline int
usb_phy_set_power(struct usb_phy *x, unsigned mA)
{
if (x && x->set_power)
return x->set_power(x, mA);
return 0;
}
static inline int
usb_phy_set_suspend(struct usb_phy *x, int suspend)
{
if (x->set_suspend != NULL)
return x->set_suspend(x, suspend);
else
return 0;
}
static inline int
otg_start_srp(struct usb_otg *otg)
{
if (otg && otg->start_srp)
return otg->start_srp(otg);
return -ENOTSUPP;
}
static inline int
usb_register_notifier(struct usb_phy *x, struct notifier_block *nb)
{
return atomic_notifier_chain_register(&x->notifier, nb);
}
static inline void
usb_unregister_notifier(struct usb_phy *x, struct notifier_block *nb)
{
atomic_notifier_chain_unregister(&x->notifier, nb);
}
extern int usb_bus_start_enum(struct usb_bus *bus, unsigned port_num);
#endif
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