0 ˆÁÊ ƒxO9ÀÆÌ ^/* SPDX-License-Identifier: GPL-2.0 */ /* * USB PHY 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_PHY_H #define __LINUX_USB_PHY_H #include #include #include #include enum usb_phy_interface { USBPHY_INTERFACE_MODE_UNKNOWN, USBPHY_INTERFACE_MODE_UTMI, USBPHY_INTERFACE_MODE_UTMIW, USBPHY_INTERFACE_MODE_ULPI, USBPHY_INTERFACE_MODE_SERIAL, USBPHY_INTERFACE_MODE_HSIC, }; enum usb_phy_events { USB_EVENT_NONE, /* no events or cable disconnected */ USB_EVENT_VBUS, /* vbus valid event */ USB_EVENT_ID, /* id was grounded */ USB_EVENT_CHARGER, /* usb dedicated charger */ USB_EVENT_ENUMERATED, /* gadget driver enumerated */ }; /* associate a type with PHY */ enum usb_phy_type { USB_PHY_TYPE_UNDEFINED, USB_PHY_TYPE_USB2, USB_PHY_TYPE_USB3, }; /* OTG defines lots of enumeration states before device reset */ enum usb_otg_state { OTG_STATE_UNDEFINED = 0, /* single-role peripheral, and dual-role default-b */ OTG_STATE_B_IDLE, OTG_STATE_B_SRP_INIT, OTG_STATE_B_PERIPHERAL, /* extra dual-role default-b states */ OTG_STATE_B_WAIT_ACON, OTG_STATE_B_HOST, /* dual-role default-a */ 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, }; struct usb_phy; struct usb_otg; /* for phys connected thru an ULPI interface, the user must * provide access ops */ 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_charger_current { unsigned int sdp_min; unsigned int sdp_max; unsigned int dcp_min; unsigned int dcp_max; unsigned int cdp_min; unsigned int cdp_max; unsigned int aca_min; unsigned int aca_max; }; struct usb_phy { struct device *dev; const char *label; unsigned int flags; enum usb_phy_type type; 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; /* to support extcon device */ struct extcon_dev *edev; struct extcon_dev *id_edev; struct notifier_block vbus_nb; struct notifier_block id_nb; struct notifier_block type_nb; /* Support USB charger */ enum usb_charger_type chg_type; enum usb_charger_state chg_state; struct usb_charger_current chg_cur; struct work_struct chg_work; /* for notification of usb_phy_events */ struct atomic_notifier_head notifier; /* to pass extra port status to the root hub */ u16 port_status; u16 port_change; /* to support controllers that have multiple phys */ struct list_head head; /* initialize/shutdown the phy */ int (*init)(struct usb_phy *x); void (*shutdown)(struct usb_phy *x); /* enable/disable VBUS */ int (*set_vbus)(struct usb_phy *x, int on); /* effective for B devices, ignored for A-peripheral */ int (*set_power)(struct usb_phy *x, unsigned mA); /* Set phy into suspend mode */ int (*set_suspend)(struct usb_phy *x, int suspend); /* * Set wakeup enable for PHY, in that case, the PHY can be * woken up from suspend status due to external events, * like vbus change, dp/dm change and id. */ int (*set_wakeup)(struct usb_phy *x, bool enabled); /* notify phy connect status change */ int (*notify_connect)(struct usb_phy *x, enum usb_device_speed speed); int (*notify_disconnect)(struct usb_phy *x, enum usb_device_speed speed); /* * Charger detection method can be implemented if you need to * manually detect the charger type. */ enum usb_charger_type (*charger_detect)(struct usb_phy *x); }; /* for board-specific init logic */ extern int usb_add_phy(struct usb_phy *, enum usb_phy_type type); extern int usb_add_phy_dev(struct usb_phy *); extern void usb_remove_phy(struct usb_phy *); /* he