projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 41dceed5 | 1 | /* USB OTG (On The Go) defines */ |
| 1da177e4 | 2 | /* |
| dda43a0e | 3 | * |
| 1da177e4 LT |
4 | * These APIs may be used between USB controllers. USB device drivers |
| 5 | * (for either host or peripheral roles) don't use these calls; they | |
| 6 | * continue to use just usb_device and usb_gadget. | |
| 7 | */ | |
| 8 | ||
| dda43a0e RD |
9 | #ifndef __LINUX_USB_OTG_H |
| 10 | #define __LINUX_USB_OTG_H | |
| 1da177e4 | 11 | |
| de4217d9 | 12 | #include <linux/usb/phy.h> |
| e9a20171 | 13 | |
| 7a8a3a9b HK |
14 | struct usb_otg { |
| 15 | u8 default_a; | |
| 16 | ||
| 17 | struct usb_phy *phy; | |
| 18 | struct usb_bus *host; | |
| 19 | struct usb_gadget *gadget; | |
| 20 | ||
| 21 | /* bind/unbind the host controller */ | |
| 22 | int (*set_host)(struct usb_otg *otg, struct usb_bus *host); | |
| 23 | ||
| 24 | /* bind/unbind the peripheral controller */ | |
| 25 | int (*set_peripheral)(struct usb_otg *otg, | |
| 26 | struct usb_gadget *gadget); | |
| 27 | ||
| 28 | /* effective for A-peripheral, ignored for B devices */ | |
| 29 | int (*set_vbus)(struct usb_otg *otg, bool enabled); | |
| 30 | ||
| 31 | /* for B devices only: start session with A-Host */ | |
| 32 | int (*start_srp)(struct usb_otg *otg); | |
| 33 | ||
| 34 | /* start or continue HNP role switch */ | |
| 35 | int (*start_hnp)(struct usb_otg *otg); | |
| 36 | ||
| 37 | }; | |
| 38 | ||
| 42c0bf1c | 39 | extern const char *usb_otg_state_string(enum usb_otg_state state); |
| 1da177e4 | 40 | |
| c2344f13 | 41 | /* Context: can sleep */ |
| 1da177e4 | 42 | static inline int |
| 6e13c650 | 43 | otg_start_hnp(struct usb_otg *otg) |
| 1da177e4 | 44 | { |
| 6e13c650 HK |
45 | if (otg && otg->start_hnp) |
| 46 | return otg->start_hnp(otg); | |
| 7a8a3a9b | 47 | |
| 136ced89 | 48 | return -ENOTSUPP; |
| 1da177e4 LT |
49 | } |
| 50 | ||
| 91c8a5a9 DM |
51 | /* Context: can sleep */ |
| 52 | static inline int | |
| 6e13c650 | 53 | otg_set_vbus(struct usb_otg *otg, bool enabled) |
| 91c8a5a9 | 54 | { |
| 6e13c650 HK |
55 | if (otg && otg->set_vbus) |
| 56 | return otg->set_vbus(otg, enabled); | |
| 7a8a3a9b | 57 | |
| 136ced89 | 58 | return -ENOTSUPP; |
| 91c8a5a9 | 59 | } |
| 1da177e4 LT |
60 | |
| 61 | /* for HCDs */ | |
| 62 | static inline int | |
| 6e13c650 | 63 | otg_set_host(struct usb_otg *otg, struct usb_bus *host) |
| 1da177e4 | 64 | { |
| 6e13c650 HK |
65 | if (otg && otg->set_host) |
| 66 | return otg->set_host(otg, host); | |
| 7a8a3a9b | 67 | |
| 136ced89 | 68 | return -ENOTSUPP; |
| 1da177e4 LT |
69 | } |
| 70 | ||
| 1da177e4 | 71 | /* for usb peripheral controller drivers */ |
| c2344f13 RJ |
72 | |
| 73 | /* Context: can sleep */ | |
| 1da177e4 | 74 | static inline int |
| 6e13c650 | 75 | otg_set_peripheral(struct usb_otg *otg, struct usb_gadget *periph) |
| 1da177e4 | 76 | { |
| 6e13c650 HK |
77 | if (otg && otg->set_peripheral) |
| 78 | return otg->set_peripheral(otg, periph); | |
| 7a8a3a9b | 79 | |
| 136ced89 | 80 | return -ENOTSUPP; |
| 1da177e4 LT |
81 | } |
| 82 | ||
| 1da177e4 | 83 | static inline int |
| 6e13c650 | 84 | otg_start_srp(struct usb_otg *otg) |
| 1da177e4 | 85 | { |
| 6e13c650 HK |
86 | if (otg && otg->start_srp) |
| 87 | return otg->start_srp(otg); | |
| 7a8a3a9b | 88 | |
| 136ced89 | 89 | return -ENOTSUPP; |
| 1da177e4 LT |
90 | } |
| 91 | ||
| 1da177e4 LT |
92 | /* for OTG controller drivers (and maybe other stuff) */ |
| 93 | extern int usb_bus_start_enum(struct usb_bus *bus, unsigned port_num); | |
| dda43a0e | 94 | |
| 1c9af653 MG |
95 | enum usb_dr_mode { |
| 96 | USB_DR_MODE_UNKNOWN, | |
| 97 | USB_DR_MODE_HOST, | |
| 98 | USB_DR_MODE_PERIPHERAL, | |
| 99 | USB_DR_MODE_OTG, | |
| 100 | }; | |
| 101 | ||
| dda43a0e | 102 | #endif /* __LINUX_USB_OTG_H */ |