Release 4.7 include/linux/usb/otg.h
/* USB OTG (On The Go) defines */
/*
*
* These APIs may be used between USB controllers. USB device drivers
* (for either host or peripheral roles) don't use these calls; they
* continue to use just usb_device and usb_gadget.
*/
#ifndef __LINUX_USB_OTG_H
#define __LINUX_USB_OTG_H
#include <linux/phy/phy.h>
#include <linux/usb/phy.h>
struct usb_otg {
u8 default_a;
struct phy *phy;
/* old usb_phy interface */
struct usb_phy *usb_phy;
struct usb_bus *host;
struct usb_gadget *gadget;
enum usb_otg_state state;
/* 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);
};
/**
* struct usb_otg_caps - describes the otg capabilities of the device
* @otg_rev: The OTG revision number the device is compliant with, it's
* in binary-coded decimal (i.e. 2.0 is 0200H).
* @hnp_support: Indicates if the device supports HNP.
* @srp_support: Indicates if the device supports SRP.
* @adp_support: Indicates if the device supports ADP.
*/
struct usb_otg_caps {
u16 otg_rev;
bool hnp_support;
bool srp_support;
bool adp_support;
};
extern const char *usb_otg_state_string(enum usb_otg_state state);
/* Context: can sleep */
static inline int
otg_start_hnp(struct usb_otg *otg)
{
if (otg && otg->start_hnp)
return otg->start_hnp(otg);
return -ENOTSUPP;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| heikki krogerus | heikki krogerus | 20 | 62.50% | 3 | 75.00% |
| david brownell | david brownell | 12 | 37.50% | 1 | 25.00% |
| Total | 32 | 100.00% | 4 | 100.00% |
/* Context: can sleep */
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;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| heikki krogerus | heikki krogerus | 22 | 59.46% | 3 | 75.00% |
| daniel mack | daniel mack | 15 | 40.54% | 1 | 25.00% |
| Total | 37 | 100.00% | 4 | 100.00% |
/* for HCDs */
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;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| heikki krogerus | heikki krogerus | 22 | 56.41% | 3 | 75.00% |
| david brownell | david brownell | 17 | 43.59% | 1 | 25.00% |
| Total | 39 | 100.00% | 4 | 100.00% |
/* for usb peripheral controller drivers */
/* Context: can sleep */
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;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| heikki krogerus | heikki krogerus | 22 | 56.41% | 3 | 75.00% |
| david brownell | david brownell | 17 | 43.59% | 1 | 25.00% |
| Total | 39 | 100.00% | 4 | 100.00% |
static inline int
otg_start_srp(struct usb_otg *otg)
{
if (otg && otg->start_srp)
return otg->start_srp(otg);
return -ENOTSUPP;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| heikki krogerus | heikki krogerus | 20 | 62.50% | 3 | 75.00% |
| david brownell | david brownell | 12 | 37.50% | 1 | 25.00% |
| Total | 32 | 100.00% | 4 | 100.00% |
/* for OTG controller drivers (and maybe other stuff) */
extern int usb_bus_start_enum(struct usb_bus *bus, unsigned port_num);
enum usb_dr_mode {
USB_DR_MODE_UNKNOWN,
USB_DR_MODE_HOST,
USB_DR_MODE_PERIPHERAL,
USB_DR_MODE_OTG,
};
/**
* usb_get_dr_mode - Get dual role mode for given device
* @dev: Pointer to the given device
*
* The function gets phy interface string from property 'dr_mode',
* and returns the correspondig enum usb_dr_mode
*/
extern enum usb_dr_mode usb_get_dr_mode(struct device *dev);
#endif /* __LINUX_USB_OTG_H */
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| heikki krogerus | heikki krogerus | 200 | 52.77% | 4 | 19.05% |
| david brownell | david brownell | 74 | 19.53% | 2 | 9.52% |
| li jun | li jun | 18 | 4.75% | 1 | 4.76% |
| daniel mack | daniel mack | 16 | 4.22% | 1 | 4.76% |
| antoine tenart | antoine tenart | 14 | 3.69% | 3 | 14.29% |
| venu byravarasu | venu byravarasu | 12 | 3.17% | 1 | 4.76% |
| michael grzeschik | michael grzeschik | 12 | 3.17% | 1 | 4.76% |
| robert p. j. day | robert p. j. day | 10 | 2.64% | 1 | 4.76% |
| anatolij gustschin | anatolij gustschin | 9 | 2.37% | 1 | 4.76% |
| kishon vijay abraham i | kishon vijay abraham i | 6 | 1.58% | 1 | 4.76% |
| felipe balbi | felipe balbi | 3 | 0.79% | 2 | 9.52% |
| philipp zabel | philipp zabel | 2 | 0.53% | 1 | 4.76% |
| robert jarzmik | robert jarzmik | 2 | 0.53% | 1 | 4.76% |
| greg kroah-hartman | greg kroah-hartman | 1 | 0.26% | 1 | 4.76% |
| Total | 379 | 100.00% | 21 | 100.00% |
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