[mirror_ubuntu-kernels.git] / include / linux / usb / phy.h

/* 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 <linux/extcon.h>
#include <linux/notifier.h>
#include <linux/usb.h>
#include <uapi/linux/usb/charger.h>

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);
};

/**
 * struct usb_phy_bind - represent the binding for the phy
 * @dev_name: the device name of the device that will bind to the phy
 * @phy_dev_name: the device name of the phy
 * @index: used if a single controller uses multiple phys
 * @phy: reference to the phy
 * @list: to maintain a linked list of the binding information
 */
struct usb_phy_bind {
	const char	*dev_name;
	const char	*phy_dev_name;
	u8		index;
	struct usb_phy	*phy;
	struct list_head list;
};

/* 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 *);

/* helpers for direct access thru low-level io interface */
static inline int usb_phy_io_read(struct usb_phy *x, u32 reg)
{
	if (x && 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 && 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 && x->init)
		return x->init(x);

	return 0;
}

static inline void
usb_phy_shutdown(struct usb_phy *x)
{
	if (x && x->shutdown)
		x->shutdown(x);
}

static inline int
usb_phy_vbus_on(struct usb_phy *x)
{
	if (!x || !x->set_vbus)
		return 0;

	return x->set_vbus(x, true);
}

static inline int
usb_phy_vbus_off(struct usb_phy *x)
{
	if (!x || !x->set_vbus)
		return 0;

	return x->set_vbus(x, false);
}

/* for usb host and peripheral controller drivers */
#if IS_ENABLED(CONFIG_USB_PHY)
extern struct usb_phy *usb_get_phy(enum usb_phy_type type);
extern struct usb_phy *devm_usb_get_phy(struct device *dev,
	enum usb_phy_type type);
extern struct usb_phy *usb_get_phy_dev(struct device *dev, u8 index);
extern struct usb_phy *devm_usb_get_phy_dev(struct device *dev, u8 index);
extern struct usb_phy *devm_usb_get_phy_by_phandle(struct device *dev,
	const char *phandle, u8 index);
extern struct usb_phy *devm_usb_get_phy_by_node(struct device *dev,
	struct device_node *node, struct notifier_block *nb);
extern void usb_put_phy(struct usb_phy *);
extern void devm_usb_put_phy(struct device *dev, struct usb_phy *x);
extern int usb_bind_phy(const char *dev_name, u8 index,
				const char *phy_dev_name);
extern void usb_phy_set_event(struct usb_phy *x, unsigned long event);
extern void usb_phy_set_charger_current(struct usb_phy *usb_phy,
					unsigned int mA);
extern void usb_phy_get_charger_current(struct usb_phy *usb_phy,
					unsigned int *min, unsigned int *max);
extern void usb_phy_set_charger_state(struct usb_phy *usb_phy,
				      enum usb_charger_state state);
#else
static inline struct usb_phy *usb_get_phy(enum usb_phy_type type)
{
	return ERR_PTR(-ENXIO);
}

static inline struct usb_phy *devm_usb_get_phy(struct device *dev,
	enum usb_phy_type type)
{
	return ERR_PTR(-ENXIO);
}

static inline struct usb_phy *usb_get_phy_dev(struct device *dev, u8 index)
{
	return ERR_PTR(-ENXIO);
}

static inline struct usb_phy *devm_usb_get_phy_dev(struct device *dev, u8 index)
{
	return ERR_PTR(-ENXIO);
}

static inline struct usb_phy *devm_usb_get_phy_by_phandle(struct device *dev,
	const char *phandle, u8 index)
{
	return ERR_PTR(-ENXIO);
}

static inline struct usb_phy *devm_usb_get_phy_by_node(struct device *dev,
	struct device_node *node, struct notifier_block *nb)
{
	return ERR_PTR(-ENXIO);
}

static inline void usb_put_phy(struct usb_phy *x)
{
}

static inline void devm_usb_put_phy(struct device *dev, struct usb_phy *x)
{
}

static inline int usb_bind_phy(const char *dev_name, u8 index,
				const char *phy_dev_name)
{
	return -EOPNOTSUPP;
}

static inline void usb_phy_set_event(struct usb_phy *x, unsigned long event)
{
}

static inline void usb_phy_set_charger_current(struct usb_phy *usb_phy,
					       unsigned int mA)
{
}

static inline void usb_phy_get_charger_current(struct usb_phy *usb_phy,
					       unsigned int *min,
					       unsigned int *max)
{
}

static inline void usb_phy_set_charger_state(struct usb_phy *usb_phy,
					     enum usb_charger_state state)
{
}
#endif

static inline int
usb_phy_set_power(struct usb_phy *x, unsigned mA)
{
	if (!x)
		return 0;

	usb_phy_set_charger_current(x, mA);

	if (x->set_power)
		return x->set_power(x, mA);
	return 0;
}

/* Context: can sleep */
static inline int
usb_phy_set_suspend(struct usb_phy *x, int suspend)
{
	if (x && x->set_suspend != NULL)
		return x->set_suspend(x, suspend);
	else
		return 0;
}

static inline int
usb_phy_set_wakeup(struct usb_phy *x, bool enabled)
{
	if (x && x->set_wakeup)
		return x->set_wakeup(x, enabled);
	else
		return 0;
}

static inline int
usb_phy_notify_connect(struct usb_phy *x, enum usb_device_speed speed)
{
	if (x && x->notify_connect)
		return x->notify_connect(x, speed);
	else
		return 0;
}

static inline int
usb_phy_notify_disconnect(struct usb_phy *x, enum usb_device_speed speed)
{
	if (x && x->notify_disconnect)
		return x->notify_disconnect(x, speed);
	else
		return 0;
}

/* notifiers */
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);
}

static inline const char *usb_phy_type_string(enum usb_phy_type type)
{
	switch (type) {
	case USB_PHY_TYPE_USB2:
		return "USB2 PHY";
	case USB_PHY_TYPE_USB3:
		return "USB3 PHY";
	default:
		return "UNKNOWN PHY TYPE";
	}
}
#endif /* __LINUX_USB_PHY_H */
Commit	Line	Data
b2441318	1	/* SPDX-License-Identifier: GPL-2.0 */
de4217d9	2	/*
07673204	3	* USB PHY defines
de4217d9 VB	4	*
	5	* These APIs may be used between USB controllers. USB device drivers
	6	* (for either host or peripheral roles) don't use these calls; they
	7	* continue to use just usb_device and usb_gadget.
	8	*/
	9
	10	#ifndef __LINUX_USB_PHY_H
	11	#define __LINUX_USB_PHY_H
	12
7d21114d	13	#include <linux/extcon.h>
de4217d9	14	#include <linux/notifier.h>
ac96511b	15	#include <linux/usb.h>
a9081a00	16	#include <uapi/linux/usb/charger.h>
de4217d9	17
1c9af653 MG	18	enum usb_phy_interface {
	19	USBPHY_INTERFACE_MODE_UNKNOWN,
	20	USBPHY_INTERFACE_MODE_UTMI,
	21	USBPHY_INTERFACE_MODE_UTMIW,
	22	USBPHY_INTERFACE_MODE_ULPI,
	23	USBPHY_INTERFACE_MODE_SERIAL,
	24	USBPHY_INTERFACE_MODE_HSIC,
	25	};
	26
de4217d9 VB	27	enum usb_phy_events {
	28	USB_EVENT_NONE, /* no events or cable disconnected */
	29	USB_EVENT_VBUS, /* vbus valid event */
	30	USB_EVENT_ID, /* id was grounded */
	31	USB_EVENT_CHARGER, /* usb dedicated charger */
	32	USB_EVENT_ENUMERATED, /* gadget driver enumerated */
	33	};
	34
	35	/* associate a type with PHY */
	36	enum usb_phy_type {
	37	USB_PHY_TYPE_UNDEFINED,
	38	USB_PHY_TYPE_USB2,
	39	USB_PHY_TYPE_USB3,
	40	};
	41
a4c3ddec VB	42	/* OTG defines lots of enumeration states before device reset */
	43	enum usb_otg_state {
	44	OTG_STATE_UNDEFINED = 0,
	45
	46	/* single-role peripheral, and dual-role default-b */
	47	OTG_STATE_B_IDLE,
	48	OTG_STATE_B_SRP_INIT,
	49	OTG_STATE_B_PERIPHERAL,
	50
	51	/* extra dual-role default-b states */
	52	OTG_STATE_B_WAIT_ACON,
	53	OTG_STATE_B_HOST,
	54
	55	/* dual-role default-a */
	56	OTG_STATE_A_IDLE,
	57	OTG_STATE_A_WAIT_VRISE,
	58	OTG_STATE_A_WAIT_BCON,
	59	OTG_STATE_A_HOST,
	60	OTG_STATE_A_SUSPEND,
	61	OTG_STATE_A_PERIPHERAL,
	62	OTG_STATE_A_WAIT_VFALL,
	63	OTG_STATE_A_VBUS_ERR,
	64	};
	65
de4217d9 VB	66	struct usb_phy;
	67	struct usb_otg;
	68
58efd4b0	69	/* for phys connected thru an ULPI interface, the user must
de4217d9 VB	70	* provide access ops
	71	*/
	72	struct usb_phy_io_ops {
	73	int (read)(struct usb_phy x, u32 reg);
	74	int (write)(struct usb_phy x, u32 val, u32 reg);
	75	};
	76
a9081a00 BW	77	struct usb_charger_current {
	78	unsigned int sdp_min;
	79	unsigned int sdp_max;
	80	unsigned int dcp_min;
	81	unsigned int dcp_max;
	82	unsigned int cdp_min;
	83	unsigned int cdp_max;
	84	unsigned int aca_min;
	85	unsigned int aca_max;
	86	};
	87
de4217d9 VB	88	struct usb_phy {
	89	struct device *dev;
	90	const char *label;
	91	unsigned int flags;
	92
	93	enum usb_phy_type type;
	94	enum usb_phy_events last_event;
	95
	96	struct usb_otg *otg;
	97
	98	struct device *io_dev;
	99	struct usb_phy_io_ops *io_ops;
	100	void __iomem *io_priv;
	101
7d21114d BW	102	/* to support extcon device */
	103	struct extcon_dev *edev;
	104	struct extcon_dev *id_edev;
	105	struct notifier_block vbus_nb;
	106	struct notifier_block id_nb;
a9081a00 BW	107	struct notifier_block type_nb;
	108
	109	/* Support USB charger */
	110	enum usb_charger_type chg_type;
	111	enum usb_charger_state chg_state;
	112	struct usb_charger_current chg_cur;
	113	struct work_struct chg_work;
7d21114d	114
de4217d9 VB	115	/* for notification of usb_phy_events */
	116	struct atomic_notifier_head notifier;
	117
	118	/* to pass extra port status to the root hub */
	119	u16 port_status;
	120	u16 port_change;
	121
58efd4b0	122	/* to support controllers that have multiple phys */
de4217d9 VB	123	struct list_head head;
de4217d9 VB	124
58efd4b0	125	/* initialize/shutdown the phy */
de4217d9 VB	126	int (init)(struct usb_phy x);
	127	void (shutdown)(struct usb_phy x);
	128
b774212e FB	129	/* enable/disable VBUS */
	130	int (set_vbus)(struct usb_phy x, int on);
	131
de4217d9 VB	132	/* effective for B devices, ignored for A-peripheral */
	133	int (set_power)(struct usb_phy x,
	134	unsigned mA);
	135
58efd4b0	136	/* Set phy into suspend mode */
de4217d9 VB	137	int (set_suspend)(struct usb_phy x,
	138	int suspend);
	139
57bf9b09 PC	140	/*
	141	* Set wakeup enable for PHY, in that case, the PHY can be
	142	* woken up from suspend status due to external events,
	143	* like vbus change, dp/dm change and id.
	144	*/
	145	int (set_wakeup)(struct usb_phy x, bool enabled);
	146
de4217d9	147	/* notify phy connect status change */
ac96511b PC	148	int (notify_connect)(struct usb_phy x,
	149	enum usb_device_speed speed);
	150	int (notify_disconnect)(struct usb_phy x,
	151	enum usb_device_speed speed);
a9081a00 BW	152
	153	/*
	154	* Charger detection method can be implemented if you need to
	155	* manually detect the charger type.
	156	*/
	157	enum usb_charger_type (charger_detect)(struct usb_phy x);
de4217d9 VB	158	};
de4217d9 VB	159
b4a83e4d KVA	160	/**
	161	* struct usb_phy_bind - represent the binding for the phy
	162	* @dev_name: the device name of the device that will bind to the phy
	163	* @phy_dev_name: the device name of the phy
	164	* @index: used if a single controller uses multiple phys
	165	* @phy: reference to the phy
	166	* @list: to maintain a linked list of the binding information
	167	*/
	168	struct usb_phy_bind {
	169	const char *dev_name;
	170	const char *phy_dev_name;
	171	u8 index;
	172	struct usb_phy *phy;
	173	struct list_head list;
	174	};
de4217d9 VB	175
	176	/* for board-specific init logic */
	177	extern int usb_add_phy(struct usb_phy *, enum usb_phy_type type);
0fa4fab4	178	extern int usb_add_phy_dev(struct usb_phy *);
de4217d9 VB	179	extern void usb_remove_phy(struct usb_phy *);
	180
	181	/* helpers for direct access thru low-level io interface */
	182	static inline int usb_phy_io_read(struct usb_phy *x, u32 reg)
	183	{
410aee70	184	if (x && x->io_ops && x->io_ops->read)
de4217d9 VB	185	return x->io_ops->read(x, reg);
	186
	187	return -EINVAL;
	188	}
	189
	190	static inline int usb_phy_io_write(struct usb_phy *x, u32 val, u32 reg)
	191	{
410aee70	192	if (x && x->io_ops && x->io_ops->write)
de4217d9 VB	193	return x->io_ops->write(x, val, reg);
	194
	195	return -EINVAL;
	196	}
	197
	198	static inline int
	199	usb_phy_init(struct usb_phy *x)
	200	{
410aee70	201	if (x && x->init)
de4217d9 VB	202	return x->init(x);
	203
	204	return 0;
	205	}
	206
	207	static inline void
	208	usb_phy_shutdown(struct usb_phy *x)
	209	{
410aee70	210	if (x && x->shutdown)
de4217d9 VB	211	x->shutdown(x);
	212	}
	213
b774212e FB	214	static inline int
	215	usb_phy_vbus_on(struct usb_phy *x)
	216	{
410aee70	217	if (!x \|\| !x->set_vbus)
b774212e FB	218	return 0;
	219
	220	return x->set_vbus(x, true);
	221	}
	222
	223	static inline int
	224	usb_phy_vbus_off(struct usb_phy *x)
	225	{
410aee70	226	if (!x \|\| !x->set_vbus)
b774212e FB	227	return 0;
	228
	229	return x->set_vbus(x, false);
	230	}
	231
de4217d9	232	/* for usb host and peripheral controller drivers */
edc7cb2e	233	#if IS_ENABLED(CONFIG_USB_PHY)
de4217d9 VB	234	extern struct usb_phy *usb_get_phy(enum usb_phy_type type);
	235	extern struct usb_phy devm_usb_get_phy(struct device dev,
	236	enum usb_phy_type type);
0fa4fab4 KVA	237	extern struct usb_phy usb_get_phy_dev(struct device dev, u8 index);
0fa4fab4 KVA	238	extern struct usb_phy devm_usb_get_phy_dev(struct device dev, u8 index);
5d3c28b5 KVA	239	extern struct usb_phy devm_usb_get_phy_by_phandle(struct device dev,
5d3c28b5 KVA	240	const char *phandle, u8 index);
e842b84c N	241	extern struct usb_phy devm_usb_get_phy_by_node(struct device dev,
e842b84c N	242	struct device_node node, struct notifier_block nb);
de4217d9 VB	243	extern void usb_put_phy(struct usb_phy *);
de4217d9 VB	244	extern void devm_usb_put_phy(struct device dev, struct usb_phy x);
b4a83e4d KVA	245	extern int usb_bind_phy(const char *dev_name, u8 index,
b4a83e4d KVA	246	const char *phy_dev_name);
df9f7b31	247	extern void usb_phy_set_event(struct usb_phy *x, unsigned long event);
a9081a00 BW	248	extern void usb_phy_set_charger_current(struct usb_phy *usb_phy,
	249	unsigned int mA);
	250	extern void usb_phy_get_charger_current(struct usb_phy *usb_phy,
	251	unsigned int min, unsigned int max);
	252	extern void usb_phy_set_charger_state(struct usb_phy *usb_phy,
	253	enum usb_charger_state state);
de4217d9 VB	254	#else
	255	static inline struct usb_phy *usb_get_phy(enum usb_phy_type type)
	256	{
b7fa5c2a	257	return ERR_PTR(-ENXIO);
de4217d9 VB	258	}
	259
	260	static inline struct usb_phy devm_usb_get_phy(struct device dev,
	261	enum usb_phy_type type)
	262	{
b7fa5c2a	263	return ERR_PTR(-ENXIO);
de4217d9 VB	264	}
de4217d9 VB	265
0fa4fab4 KVA	266	static inline struct usb_phy usb_get_phy_dev(struct device dev, u8 index)
0fa4fab4 KVA	267	{
b7fa5c2a	268	return ERR_PTR(-ENXIO);
0fa4fab4 KVA	269	}
	270
	271	static inline struct usb_phy devm_usb_get_phy_dev(struct device dev, u8 index)
	272	{
b7fa5c2a	273	return ERR_PTR(-ENXIO);
0fa4fab4 KVA	274	}
0fa4fab4 KVA	275
5d3c28b5 KVA	276	static inline struct usb_phy devm_usb_get_phy_by_phandle(struct device dev,
	277	const char *phandle, u8 index)
	278	{
b7fa5c2a	279	return ERR_PTR(-ENXIO);
5d3c28b5 KVA	280	}
5d3c28b5 KVA	281
307c858b AB	282	static inline struct usb_phy devm_usb_get_phy_by_node(struct device dev,
	283	struct device_node node, struct notifier_block nb)
	284	{
	285	return ERR_PTR(-ENXIO);
	286	}
	287
de4217d9 VB	288	static inline void usb_put_phy(struct usb_phy *x)
	289	{
	290	}
	291
	292	static inline void devm_usb_put_phy(struct device dev, struct usb_phy x)
	293	{
	294	}
	295
b4a83e4d KVA	296	static inline int usb_bind_phy(const char *dev_name, u8 index,
	297	const char *phy_dev_name)
	298	{
	299	return -EOPNOTSUPP;
	300	}
df9f7b31 KR	301
	302	static inline void usb_phy_set_event(struct usb_phy *x, unsigned long event)
	303	{
	304	}
a9081a00 BW	305
	306	static inline void usb_phy_set_charger_current(struct usb_phy *usb_phy,
	307	unsigned int mA)
	308	{
	309	}
	310
	311	static inline void usb_phy_get_charger_current(struct usb_phy *usb_phy,
	312	unsigned int *min,
	313	unsigned int *max)
	314	{
	315	}
	316
	317	static inline void usb_phy_set_charger_state(struct usb_phy *usb_phy,
	318	enum usb_charger_state state)
	319	{
	320	}
de4217d9 VB	321	#endif
	322
	323	static inline int
	324	usb_phy_set_power(struct usb_phy *x, unsigned mA)
	325	{
eb3c74de BW	326	if (!x)
	327	return 0;
	328
a9081a00 BW	329	usb_phy_set_charger_current(x, mA);
a9081a00 BW	330
eb3c74de	331	if (x->set_power)
de4217d9 VB	332	return x->set_power(x, mA);
	333	return 0;
	334	}
	335
	336	/* Context: can sleep */
	337	static inline int
	338	usb_phy_set_suspend(struct usb_phy *x, int suspend)
	339	{
410aee70	340	if (x && x->set_suspend != NULL)
de4217d9 VB	341	return x->set_suspend(x, suspend);
	342	else
	343	return 0;
	344	}
	345
57bf9b09 PC	346	static inline int
	347	usb_phy_set_wakeup(struct usb_phy *x, bool enabled)
	348	{
	349	if (x && x->set_wakeup)
	350	return x->set_wakeup(x, enabled);
	351	else
	352	return 0;
	353	}
	354
de4217d9	355	static inline int
ac96511b	356	usb_phy_notify_connect(struct usb_phy *x, enum usb_device_speed speed)
de4217d9	357	{
410aee70	358	if (x && x->notify_connect)
ac96511b	359	return x->notify_connect(x, speed);
de4217d9 VB	360	else
	361	return 0;
	362	}
	363
	364	static inline int
ac96511b	365	usb_phy_notify_disconnect(struct usb_phy *x, enum usb_device_speed speed)
de4217d9	366	{
410aee70	367	if (x && x->notify_disconnect)
ac96511b	368	return x->notify_disconnect(x, speed);
de4217d9 VB	369	else
	370	return 0;
	371	}
	372
	373	/* notifiers */
	374	static inline int
	375	usb_register_notifier(struct usb_phy x, struct notifier_block nb)
	376	{
	377	return atomic_notifier_chain_register(&x->notifier, nb);
	378	}
	379
	380	static inline void
	381	usb_unregister_notifier(struct usb_phy x, struct notifier_block nb)
	382	{
	383	atomic_notifier_chain_unregister(&x->notifier, nb);
	384	}
	385
	386	static inline const char *usb_phy_type_string(enum usb_phy_type type)
	387	{
	388	switch (type) {
	389	case USB_PHY_TYPE_USB2:
	390	return "USB2 PHY";
	391	case USB_PHY_TYPE_USB3:
	392	return "USB3 PHY";
	393	default:
	394	return "UNKNOWN PHY TYPE";
	395	}
	396	}
	397	#endif /* __LINUX_USB_PHY_H */